CN106793755A - Harvester - Google Patents

Abstract

The invention discloses a harvester, which is provided with an operation linkage mechanism for transmitting the swinging operation of an operating rod (13) to a steering driving part and a lifting driving part. The operation interlocking mechanism is provided with a steering unit for interlocking the operating rod (13) and the steering driving part, and a lifting unit for interlocking the operating rod (13) and the lifting driving part, and each unit is provided with an output operating body (71) for transmitting the swinging motion of the operating rod (13) to the steering driving part/the lifting driving part. The output operation body (71) integrally moves along with the swing motion of the operation rod (13) within the preset movable range of the steering driving part/the lifting driving part. When the operation of the operating lever (13) is performed in a direction in which the steering drive unit/the lift drive unit is moved away from the movable range after the steering drive unit/the lift drive unit reaches the operation limit of the movable range, the output operating body (71) does not integrally follow the operating lever (13) any more, and the operating lever (13) is allowed to perform a swing operation alone.

Description

Harvester

technical field

The present invention relates to a harvester provided with an operating lever capable of swinging in the front-rear direction and in the left-right direction, and capable of steering a traveling body and lifting and lowering a harvesting section.

Background technique

[1] As the harvester provided with the operation lever which can swing in the front-rear direction and the left-right direction as mentioned above, there exist the harvester of the following (1) and (2), for example.

(1) An operation lever capable of swinging operation in the front-rear direction and in the left-right direction is provided, and a potentiometer for detecting the amount of operation in the left-right direction of the operation lever and a potentiometer for detecting the amount of operation in the front-rear direction are respectively provided. And it is set to: based on the detection results of each potentiometer, the steering drive part that can be turned to the left and right direction with the advancing direction of the traveling body is operated, or the lifting drive part that can drive the lifting operation to the harvesting part is actuated (for example, refer to Patent Document 1).

(2) Equipped with an operating lever that can be swung in the front-rear direction and left-right direction, and respectively equipped with a mechanical linkage mechanism that transmits the left-right direction operation of the control lever to the steering valve, and a mechanical linkage mechanism that transmits the front-rear direction operation to the lift control valve. linkage mechanism. And it is provided that the steering operation of the body is performed by operating the operating lever in the left and right direction, and the lifting operation of the harvesting section is performed by operating the operating lever in the front and rear direction (for example, refer to Patent Document 2).

[2] As the harvester provided with the control lever which can swing in the front-rear direction and the left-right direction as mentioned above, there exists the harvester of the structure as described in following (1), for example.

(1) Equipped with an operating lever that can be swung in the front-rear direction and left-right direction, and equipped with a mechanical linkage mechanism that transmits the left-right direction operation of the control lever to the steering valve, and a mechanical linkage mechanism that transmits the front-rear direction operation to the lift control valve. linkage mechanism. And it is provided that the steering operation of the body is performed by operating the operating lever in the left and right direction, and the lifting operation of the harvesting section is performed by operating the operating lever in the front and rear direction (for example, refer to Patent Document 2).

[3] As the harvester provided with the operation lever which can swing in the front-back direction and the left-right direction as mentioned above, there exist the harvester of the following (1) and (2), for example.

(1) An operation lever capable of swinging operation in the front-rear direction and in the left-right direction is provided, and a potentiometer for detecting the amount of operation in the left-right direction of the operation lever and a potentiometer for detecting the amount of operation in the front-rear direction are respectively provided. And it is set to: based on the detection results of each potentiometer, the steering drive part that can be turned to the left and right direction with the advancing direction of the traveling body is operated, or the lifting drive part that can drive the lifting operation to the harvesting part is actuated (for example, refer to Patent Document 1).

(2) Equipped with an operating lever that can be swung in the front-rear direction and left-right direction, and respectively equipped with a mechanical linkage mechanism that transmits the left-right direction operation of the control lever to the steering valve, and a mechanical linkage mechanism that transmits the front-rear direction operation to the lift control valve. linkage mechanism. And it is provided that the steering operation of the body is performed by operating the operating lever in the left and right direction, and the lifting operation of the harvesting section is performed by operating the operating lever in the front and rear direction (for example, refer to Patent Document 2).

prior art literature

patent documents

Patent Document 1: Japanese Unexamined Patent Application Publication No. 2003-095116 (JP 2003-095116 A) (refer to paragraphs 0022, 0025, 0037, and Figures 4 and 5 of the drawings)

Patent Document 2: Japanese Patent Laying-Open No. 09-205852 (JP H09-205852 A) (refer to paragraphs 0020, 0021, 0023, and Figures 5, 8, and 10 of the accompanying drawings)

Contents of the invention

The problem to be solved by the invention

[1] Problems corresponding to Background Art [1] are as follows.

In the harvester of the structure shown in patent document 1, since each potentiometer detects the operation amount of the operation lever to the front-back direction and the left-right direction, this operation amount can be detected based on the detection value of a potentiometer.

However, in the harvester of this structure, if the swing operation range of the operating rod does not correspond exactly to the detection work range of the potentiometer, it may not be possible to obtain high-precision detection results. Special structures, such as a neutral position restricting structure assembled with precision, tend to increase the cost, and there is still room for improvement in this point.

In addition, in the harvester of the structure described in Patent Document 2, instead of using a potentiometer to detect the operation amount of the control lever, the steering is driven through a mechanical linkage mechanism such as a link and a lever linked to the swing operation of the control lever. It is useful in that it is easy to operate in conjunction with high precision with a relatively simple structure.

However, in this configuration, the swinging range of the control lever is limited by contact with a member provided independently of the mechanical linkage mechanism of the control lever, such as a guide groove provided on the control panel surface of the console. Therefore, it is necessary to adjust the swing operation range of the operating rod linked with the steering drive part and the lift drive part through the mechanical linkage mechanism with high precision so that it is consistent with the operation range determined by the guide grooves arranged on the control panel surface. However, the work performed is cumbersome, and there is still room for improvement on this point.

In the harvester of the present invention, when the operation of the steering drive unit and the lift drive unit based on the swing operation of the control lever is to be performed with high precision, the support structure of the control lever is effectively utilized to perform the movement of the control lever with high precision. Scope limitation.

[2] Problems corresponding to Background Art [2] are as follows.

In the harvester of the structure shown in Patent Document 2, the steering drive part and the lifting drive part are operated through mechanical linkage mechanisms such as links and rods linked to the swing operation of the operating lever, so it is easy to use a relatively simple structure. Its high-precision linkage operation is useful in this regard.

However, in this configuration, the swinging range of the control lever is limited by contact with a member provided independently of the mechanical linkage mechanism of the control lever, such as a guide groove provided on the control panel surface of the console. Therefore, it is necessary to adjust the swing operation range of the operating rod linked with the steering drive part and the lift drive part through the mechanical linkage mechanism with high precision so that it is consistent with the operation range determined by the guide grooves arranged on the control panel surface. However, the work performed is cumbersome, and there is still room for improvement on this point.

The object of the present invention is to obtain a harvester with the following structure: When the operation of the steering drive part and the lifting drive part realized by the swing operation of the control lever is to be performed with high precision, the control lever, the steering drive part, and the lift drive are effectively utilized. The operation linkage mechanism itself between the parts makes it easy to assemble and process the operating lever, the steering drive part, and the lift drive part.

[3] Problems corresponding to Background Art [3] are as follows.

In the harvester of the structure shown in patent document 1, since each potentiometer detects the operation amount of the operation lever to the front-back direction and the left-right direction, this operation amount can be detected based on the detection value of a potentiometer.

However, in the harvester of this structure, if the swing operation range of the operating rod does not correspond exactly to the detection work range of the potentiometer, it may not be possible to obtain high-precision detection results. Special structures, such as a neutral position restricting structure assembled with precision, tend to increase the cost, and there is still room for improvement in this point.

In addition, in the harvester of the structure described in Patent Document 2, instead of using a potentiometer to detect the operation amount of the control lever, the steering is driven through a mechanical linkage mechanism such as a link and a lever linked to the swing operation of the control lever. It is useful in that it is easy to operate in conjunction with high precision with a relatively simple structure.

However, in this configuration, the swinging range of the control lever is limited by contact with a member provided independently of the mechanical linkage mechanism of the control lever, such as a guide groove provided on the control panel surface of the console. Therefore, it is necessary to adjust the swing operation range of the operating rod linked with the steering drive part and the lift drive part through the mechanical linkage mechanism with high precision so that it is consistent with the operation range determined by the guide grooves arranged on the control panel surface. However, the work performed is cumbersome, and there is still room for improvement on this point.

In the harvester of the present invention, when the steering drive part and the lifting drive part are to be moved with high precision based on the swing operation of the control lever, the support structure of the control lever is effectively used to perform the movement of the control lever with high precision. Scope limitation.

solutions to problems

[1] The solution corresponding to problem [1] is as follows.

The harvester of the present invention is provided with: an operating lever capable of swinging operation in the front-rear direction and left-right direction; a steering drive unit capable of steering the forward direction of the traveling body in the left-right direction; Operating the harvesting unit; and operating a linkage mechanism that transmits the swing operation of the operating lever to the steering drive unit and the lifting drive unit, the operation linkage mechanism includes: a steering unit that connects the operating lever and the steering The driving unit is linked; and the lifting unit is used to link the operating rod with the lifting driving unit. In the steering unit and the lifting unit, there are devices that transmit the swinging motion of the operating rod to the steering drive respectively. part or the output operating body of the lifting drive part, in the steering unit and/or the lifting unit, when the steering drive part or the lifting drive part moves within a preset movable range, The output operation body moves integrally with the swinging motion of the operation lever, and when the steering drive unit or the lift drive unit reaches the movement limit of the movable range, the steering drive unit Or, when the lifting drive unit operates the operating lever in a direction away from the movable range, the output operating body no longer integrally follows the operating lever, allowing the operating lever to independently perform swinging motion.

According to the above configuration, after the steering drive unit or the lift drive unit has reached the operating limit of the movable range, only the operation lever is independently operated while the operation position of the steering drive unit or the lift drive unit is maintained at this position, without using The entire movable range on the side of the control lever coincides with the entire movable range of the steering drive unit or the lift drive unit with high precision.

Therefore, the operation of the steering drive unit or the lift drive unit can be controlled in accordance with the operation amount of the control lever until the steering drive unit or the lift drive unit reaches the operating limit of the movable range.

Thereby, there is an advantage that high-precision manufacturing and assembling are not required to make the entire movable range on the side of the control lever and the entire movable range on the side of the steering drive unit or the lift drive unit coincide with high precision, and the structure can be simple. .

As a preferred embodiment, in the steering unit and/or the lifting unit, a flexible linkage mechanism is set between the operating lever and the output operating body, through which the output A state in which the operating body moves integrally following the swinging motion of the operating lever, and a state in which the output operating body does not integrally follow the operating rod but allows the operating rod to independently perform a swinging motion.

According to the above structure, through the flexible linkage mechanism provided between the operating rod and the output operating body, the state where the output operating body moves integrally following the swinging motion of the operating rod and the state where the operating rod is allowed to swing independently are presented.

Therefore, there is an advantage in that the flexible linkage mechanism is integrated in the state of the operating system assembled between the operating lever and the output operating body, and it is easier to use.

In a preferred embodiment, the flexible linkage mechanism includes an elastic body that transmits the swing motion of the operating lever to the output operating body.

According to the above-mentioned structure, there is an advantage that the elastic body can be used as the flexible interlocking mechanism to form a simple structure.

In a preferred embodiment, the elastic body can allow the steering unit to allow the The operating lever is elastically deformed so as to independently swing in the same direction as the direction in which the steering drive unit or the lift drive unit is operated to the limit of its movement.

According to the above structure, for the elastic body of the flexible linkage mechanism, because it plays a role when the steering unit operates the steering drive part to the action limit, or when the lifting unit operates the lifting drive part to the action When the limit is reached, the operation lever is allowed to perform the swinging action alone. Therefore, it has the following advantages: by selecting an elastic coefficient that is suitable for recognizing that the steering unit and the lifting unit have each performed an operation beyond the limit of the movement, can be used conveniently.

In a preferred embodiment, in the steering unit and/or the lifting unit, the output operating body is set to freely swing around the same axis as the swing axis of the operating lever, so as to be consistent with the operation The operating bracket provided so that the lever integrally swings, and the output operating body swinging around the same axis as the operating bracket are connected via the elastic body.

According to the above structure, the flexible linkage mechanism can be set across the operating rod and the output operating body. The operating rod and the output operating body are in positions close to each other, and the range of motion also overlaps around the same axis. Therefore, it is easy to adopt and relatively compact. The advantage of the flexible linkage mechanism of the structure.

In a preferred embodiment, a shaft support member that supports the operation lever in a swingable manner is provided, and the shaft support member is supported so as to be relatively swingable around the same axis as the swing axis of the operation lever. There is the output operating body, the operating bracket is provided in such a manner as to swing integrally with the pivot member, and the elastic body straddles the locking body provided on the operating bracket and the output operating body. mode settings.

According to the above structure, the operating bracket can be directly operated by the swing operation of the operating lever, and the output operating body can be operated through the elastic body. In the middle of the structure of the operating body, it is easy to simplify the structure.

In a preferred embodiment, in the steering unit and/or the lifting unit, the output operation body includes: a cylindrical shaft portion fitted externally on a pivot shaft supporting the operation lever; and a plate-shaped swing A plate part is integrally mounted on the cylindrical shaft part, a spring locking part is provided on the swing plate part, and a coil spring as the elastic body is wound around the outer peripheral side of the cylindrical shaft part. The end portions on both end sides are arranged on both sides of the locking body and the spring locking portion in a swinging movement direction.

According to the above structure, there is an advantage that, in addition to the cylindrical shaft portion fitted outside the pivot shaft, a coil spring is used together with the spring locking portion and the locking body formed on the swing plate portion, and the structure is simple and easy to use. A structure for outputting an operating force from an operating lever via an operating linkage mechanism including a flexible linkage mechanism.

In a preferred embodiment, an operation cable that transmits an operation force to the steering drive unit or the lift drive unit is connected to the side of the swing plate portion opposite to the side where the spring locking portion is provided.

According to the above structure, there is an advantage that the operating cable can be arranged using the space on the swinging plate portion of the output operating body opposite to the side where the spring locking portion is provided, avoiding crossing of parts, and easy assembly and disassembly work.

In a preferred embodiment, a rod support frame is installed on the fixed part of the body, and the shaft supporting member can rotate around a swing axis in one of the front-rear direction and the left-right direction of the operation rod, or the rotation axis of the operation rod. One of the swing axes in the front-rear direction and the left-right direction is supported by the rod support frame so as to swing, and a first restricting portion is provided on the rod support frame. The first restricting portion The allowable swing range of the operating rod around the swing axis of either side is limited within a prescribed angle range.

According to the above configuration, the restricting portion that restricts the swinging range of the operating lever within a predetermined range is formed on the rod supporting frame itself for supporting the pivot member provided with the front-rear direction and left-right direction of the operating lever. The pivot axis in one direction or the pivot axis in the other direction.

This makes it easy to accurately correspond the amount of swing movement of the control lever to the amount of operation of the operation interlocking mechanism, and it is possible to avoid the need for a large amount of work for alignment as in the case where the restricting portion is provided at a location other than the rod support frame. inconvenient situation. In addition, there is an advantage in that the operation interlocking mechanism itself, that is, the rod support frame, the second rotating part, and the like are effectively utilized, and the configuration is easy and simple in structure.

In a preferred embodiment, the first restricting portion is composed of an abutting portion, and the abutting portion abuts against the operating rod or a member that performs swinging motion integrally with the operating rod, and restricts the swinging of the operating rod. range of motion.

According to the above-mentioned structure, the swing operation range of the control lever can be limited by the control lever or a member that swings integrally with the control lever, and the abutment portion that limits the swing movement range of the control lever. The device for limiting the swing operation range of the operating lever is simply constituted.

In a preferred embodiment, the shaft supporting member includes: a first rotating part having a swing axis in one of the front-rear direction and the left-right direction of the operating lever; and a second rotating part having the operating rod The swing axis center in the other direction of the front-rear direction and the left-right direction, the shaft support member is pivotally supported on the rod support frame via the first rotation part or the second rotation part, and the shaft support member is pivotally supported on the shaft The support member is provided with a second restricting portion that restricts the swing of the operating lever around the second rotating portion or the first rotating portion on the side not pivoted by the lever support frame. The allowable swing range of the shaft center is limited within the specified angle range.

According to the above configuration, the second restricting portion is provided on the pivot member itself, and therefore, there is an advantage that the second rotation of the operation lever around the side not pivoted by the lever support frame can be configured simply by using the pivot member itself. The limiting structure of the swinging range of the swinging axis of the swinging part or the first rotating part.

In a preferred embodiment, the second restricting part is composed of a groove part that limits the swinging range of the locking operating body within a specified range, and the locking operating body is arranged along the shaft of the operating lever. The direction is away from the position of the swing axis of the second rotating part or the first rotating part on the side not pivoted by the rod support frame, and the groove part has an abutting part, and the abutting part is Both end portions of the lock operation body in the moving direction accompanying the swing of the operation lever abut against the lock operation body.

According to the above structure, it has the following advantages: the second restricting part is composed of the locking operating body arranged at a position away from the swing axis center of the first rotating part along the shaft direction of the operating lever, and the locking operating body arranged on the swinging body of the locking operating body. The abutting portion of the groove portion that limits the operating range to a predetermined range is simple in structure.

[2] The solution corresponding to problem [2] is as follows.

The harvester of the present invention is provided with: an operating lever capable of swinging operation in the front-rear direction and left-right direction; a steering drive unit capable of steering the forward direction of the traveling body in the left-right direction; Operating the harvesting unit; and operating a linkage mechanism that transmits the swing operation of the operating lever to the steering drive unit and the lifting drive unit, the operation linkage mechanism includes: a steering unit that connects the operating lever and the steering The driving unit is linked; and the lifting unit is used to link the operating rod with the lifting driving unit. In the steering unit and the lifting unit, there are devices that transmit the swinging motion of the operating rod to the steering drive respectively. part or the output operating body of the lifting drive part, in the steering unit and/or the lifting unit, when the operating position of the operating lever is within a specified area, or acts on the operation of the output operating body When the resistance is within a prescribed range, the output operating body moves integrally following the swinging motion of the operating lever, and when the operating position exceeds the prescribed area or the operating resistance exceeds the prescribed range When , the output operating body no longer integrally follows the operating rod, allowing the operating rod to swing independently.

According to the above structure, in the steering unit and/or the lifting unit, when the operating position of the operating lever is within a predetermined range, or the operating resistance acting on the output operating body is within a predetermined range, the output operating body follows the operating rod. The swinging motion of moves in one piece. Within this range, the movement of the output operating body is linked to the swinging movement of the operating lever, and the swinging movement of the operating lever is directly transmitted to the steering drive unit and the lift drive unit with high precision.

Moreover, when the steering drive part and the lifting drive part reach the stroke limit, etc., when the operating position exceeds a prescribed area or the operating resistance exceeds a prescribed range, the output operating body no longer integrally follows the operating rod, and the operating rod is allowed to swing independently.

Therefore, there is an advantage that although the swinging motion of the operating lever and the motion of the output operating body are not linked in this state, the swinging motion of the operating lever and the motion of the output operating body can be achieved by operating the steering drive unit and the lifting drive unit. The range of action linkage is carried out, and the action of the operating lever outside this range does not affect the operation of the steering drive part and the lifting drive part, thereby simplifying the assembly of the steering unit or the lifting unit.

In other words, if the steering unit or the lifting unit is to be configured in such a way that the swinging range of the operating lever is exactly the same as that of the steering drive unit and the lift drive unit, it is necessary to ensure that all components used in each unit do not produce manufacturing errors. , The assembly errors of these components are extremely difficult.

Therefore, the present invention does not limit the swing motion range of the control lever side with high precision, but gives priority to ensuring the range of motion of the steering drive part and the lift drive part. The operating lever is linked with the steering drive part and the lifting drive part within the overlapping range of the action range, and the action of the operating lever out of this range does not affect the action of the steering drive part and the lifting drive part.

Thus, the present invention can operate the steering drive unit and the lift drive unit through the control lever with high precision, and simplify the assembly of the control lever, the steering unit including the steering drive unit and the lift drive unit, or the lift unit.

In a preferred embodiment, in the steering unit and/or the lifting unit, a flexible linkage mechanism is provided between the operating rod and the output operating body, through which the flexible linkage mechanism presents the A state in which the output operating body moves integrally following the swinging motion of the operating lever, and a state in which the output operating body does not integrally follow the operating rod but allows the operating rod to independently perform swinging motion.

According to the above structure, through the flexible linkage mechanism provided between the operating rod and the output operating body, the state where the output operating body moves integrally following the swinging motion of the operating rod and the state where the operating rod is allowed to swing independently are presented.

Therefore, there is an advantage in that the flexible linkage mechanism is integrated in the state of the operating system assembled between the operating lever and the output operating body, and it is easier to use.

In a preferred embodiment, the flexible linkage mechanism includes an elastic body that transmits the swing motion of the operating lever to the output operating body.

According to the above-mentioned structure, there is an advantage that the elastic body can be used as the flexible interlocking mechanism to form a simple structure.

In a preferred embodiment, the elastic body can allow the steering unit to allow the The operating rod is elastically deformed in a manner of swinging alone.

According to the above-mentioned structure, for the elastic body of the flexible linkage mechanism, because it plays a role in that when the steering unit operates the steering drive part to the limit of action, or when the lifting unit operates the lift drive part to the limit of action, it allows the operating lever to move independently. The action of the swinging action, therefore, has the advantage that it can be conveniently used by selecting an elastic coefficient suitable for recognizing that each of the steering unit and the lifting unit has been operated beyond the operating limit.

In a preferred embodiment, in the steering unit and/or the lifting unit, the output operating body is set to freely swing around the same axis as the swing axis of the operating lever, and the output operating body , and an operation bracket provided to swing integrally with the operation lever via the elastic body.

According to the above structure, the flexible linkage mechanism can be set across the operating rod and the output operating body. The operating rod and the output operating body are in positions close to each other, and the range of motion also overlaps around the same axis. Therefore, it is easy to adopt and relatively compact. The advantage of the flexible linkage mechanism of the structure.

In a preferred embodiment, the flexible linkage mechanism includes an operation opening formed in the output operation body, and a locking body formed in the operation bracket so as to pass through the operation opening, and according to The amount of relative movement of the locking body within the range of the operating opening determines the amount of misalignment between the operating position of the operating lever and the operating position of the output operating body.

According to the above configuration, the movable range of the locking body within the operation opening can be set to an appropriate range as the movable size. That is, although the activity itself can be effectively used, it should not grow without limit. By utilizing the size of the operation opening and the locking body, it is easy to set the movable range to an appropriate range.

In a preferred embodiment, the width of the operation opening along the direction of the rotation track about the swing axis of the operation lever is set to be narrower than the maximum movement range of the locking body in the same direction.

According to the above-mentioned structure, it has the following advantages: when the operation resistance at the steering drive part and the lifting drive part is large and the flexible linkage mechanism is working, by making the locking body reliably abut against the operation opening edge of the output operation body, it is possible to Forced operation is performed to apply an operating force to the operating lever, improving operational reliability.

In a preferred embodiment, in the steering unit and/or the lifting unit, the output operating body includes: a cylindrical shaft portion externally fitted on a pivot shaft that pivotally supports the operating lever; and a plate-shaped A swing plate part is integrally attached to the cylindrical shaft part, the opening for operation and the spring locking part are provided on the swing plate part, and the coil as the elastic body is wound around the outer peripheral side of the cylindrical shaft part. In addition, each end portion on both ends of the coil spring is installed so as to be distributed on both sides of the locking body and the spring locking portion inserted through the operation opening in the swinging movement direction.

According to the above structure, there is an advantage that, in addition to the coil spring, an operation opening, a spring locking portion, and a locking body formed in the swing plate portion are used, and it is easy and simple in structure to be configured for operation including a flexible linkage mechanism from the operating lever. The structure in which the linkage mechanism outputs the operating force.

In a preferred embodiment, an operation cable that transmits an operation force to the steering drive unit or the lift drive unit is connected to the side of the swing plate portion opposite to the side where the spring locking portion is provided.

According to the above structure, there is an advantage that the operating cable can be arranged using the space on the swinging plate portion of the output operating body opposite to the side where the spring locking portion is provided, avoiding crossing of parts, and easy assembly and disassembly work.

In a preferred embodiment, the pivot shaft pivoting the operating lever is integrally formed with a holding frame holding the pivot shaft, and the holding frame and the operating bracket included in the operating lever , and the output operation body is arranged in the order of the holding frame, the operation bracket, and the output operation body, the locking body protrudes toward the operation bracket side, and, during the operation The bracket is provided with a protruding member protruding to the side opposite to the side where the locking body is located, and a limiting opening is formed in the holding frame to limit the swing range of the protruding member to a predetermined range. The way in which the protruding member is inserted.

According to the above configuration, there is an advantage that the restriction structure for the swing range of the operation lever about the pivot shaft can be configured simply by the restriction opening formed in the holding frame and the protruding member provided in the operation bracket.

In a preferred embodiment, the harvesting section is provided with a raking reel for raking up standing crops, and a reel lifting device for adjusting the up and down position of the raking reel. An operation input part is provided on the gripping part of the device, and the operation input part is used to operate the reel lifting device to make the raking reel move up and down.

According to the above-mentioned structure, the operation input unit provided on the grip portion of the operating lever can be used to adjust the vertical position of the raking reel provided in the harvesting section with good operability, so that the harvesting section is equipped with a raking reel. Harvester gets a suitable structure.

[3] The solution corresponding to problem [3] is as follows.

The harvester of the present invention is provided with: an operating lever capable of swinging operation in the front-rear direction and left-right direction; a steering drive unit capable of steering the forward direction of the traveling body in the left-right direction; Operate the harvesting section; operate the linkage mechanism, and transmit the swing operation of the operating lever to the steering drive part and the lifting drive part; The operating lever is pivotally supported, and the pivot member includes: a first rotating portion having a swing axis in one of the front-rear direction and the left-right direction of the operating rod; and a second rotating portion having the The swing axis in the other direction of the front-back direction and the left-right direction of the operating lever, the first rotating part is pivotally supported on the body fixing part in a manner that can rotate around the swing axis in one direction, and the second rotating part The part rotates integrally with the first rotating part around the swing axis in the one direction, and the supporting member has a restricting part, and the restricting part controls the movement of the second rotating part along with the movement of the first rotating part. The rotation around the swing axis in one direction is limited within a specified angle range.

According to the above structure, there is provided a pivot member pivotally supporting the operation lever so as to be able to swing around the swing axis in the front-rear direction and the left-right direction, and the first rotation part provided on the pivot member is capable of swinging around the swing axis in one direction. The rotation mode is pivotally supported on the fixed part of the machine body, and has a restricting part, which restricts the rotation of the second rotating part around the swing axis in one direction within a specified angle range with the rotation of the first rotating part.

As a result, the swing range of the first swing portion of the control lever about the swing axis in one direction can be restricted within a predetermined range by the second swing portion and the restricting portion integrally rotated via the pivot member.

Thereby, there is an advantage that the control lever can be regulated by the pivot member pivotally supported, the restricting portion, etc. within the specified range of angles determined.

In a preferred embodiment, the restricting portion does not restrict the swing range of the operating lever around the swing axis in the other direction of the second rotating portion.

According to the above-mentioned structure, the above-mentioned restricting portion does not limit the swing range of the operating rod around the swing axis of the second rotating portion in the other direction. The restricting part is configured in such a way that the swing range of the operating rod of the center is not concerned, and it is easy to avoid complicating the structure of the restricting part itself.

In a preferred embodiment, the second rotating portion includes a pivot portion that pivots the operation lever, and an extension shaft portion extending from the pivot portion toward a direction that does not pivot the operation lever. , the extension shaft part engages with the restricting part.

According to the above configuration, there is an advantage that the extension shaft portion is provided on the second rotation portion, and the extension shaft portion is engaged with the restricting portion, whereby the device for restricting the swing operation range of the control lever can be configured with a simple structure.

In a preferred embodiment, an output operating body is provided on the pivot portion on the side opposite to the side where the extension shaft portion is provided, and the output operating body moves the operating lever around the other direction. The swing motion of the swing axis is transmitted to the steering drive part or the lifting drive part.

According to the above configuration, since the output operation body is provided on the pivot portion of the second rotating portion on the side opposite to the side where the extension shaft portion is provided, there is an advantage in that regardless of the engagement structure between the extension shaft portion and the restricting portion, The output operating body can be supported in such a way that it can swing around the swing axis of the operating lever, so that the complexity of the overall structure is avoided, and at the same time, it is easy to carry out maintenance operations such as its assembly and disassembly.

In one preferred embodiment, a rod support frame attached to the body fixing part is provided, the first rotation part is pivotally supported by the rod support frame, and the restricting part is provided on the rod support frame.

According to the above configuration, the restricting portion that restricts the swing range of the operating lever within a predetermined range is formed on the rod support frame itself, and the rod support frame is used to support the shaft supporting member that includes: the first rotating portion having a swing axis in one of the front-rear direction and the left-right direction of the operating lever;

And, the second rotation part that restricts the rotation angle range by the restriction part is a member for constituting the swing axis center in the other direction of the front-rear direction and the left-right direction of the operation lever, and the second rotation part is restricted. The rotation direction is the rotation direction around the axis of the first rotation part, that is, the swing axis in the one direction.

That is to say, the constituent member for limiting the operating range of the operating lever utilizes the lever support itself, which is the operation linkage mechanism itself for transmitting the swinging operation of the operating lever in the front-back and left-right directions to the steering drive part and the lifting drive part. frame, the second rotating part and so on.

Accordingly, the swing operation range of the operating lever is limited by the restricting portion of the lever support frame and the second rotation portion that are part of the operation interlocking mechanism that supports the operating lever. Thereby, it is easy to correspond the swinging motion amount of the operation lever to the operation amount of the operation interlocking mechanism with high precision, and it is possible to avoid the need for a large amount of work for alignment as in the case where the restricting portion is provided at a position other than the rod support frame. Inconvenient situation of time. In addition, there is an advantage in that the operation interlocking mechanism itself, that is, the rod support frame, the second rotating part, and the like are effectively utilized, and the configuration is easy and simple in structure.

In a preferred embodiment, the restricting portion is formed by an opening formed in the rod supporting frame, and by abutting against the second rotating portion inserted into the opening, the second rotating portion is moved around the The rotation of the swing axis in one direction is limited within a prescribed angle range.

According to the above-mentioned structure, the restricting part is formed by the opening formed in the rod support frame, and the swing operation range of the operating rod can be restricted by inserting the extension shaft part into the opening. A device for swinging the operating range of the joystick.

In a preferred embodiment, the rod support frame is provided with: a bearing part facing one end side of the first rotating part in the axial direction; and a connecting part provided at the end of the first rotating part. On the other end side in the axial direction, on the axial support member, a bearing portion to be inserted into and removed from the bearing portion is provided on one end side of the first rotating portion in the axial direction. On the other end side of the rotating part in the axial direction, there is provided a connecting member that can be attached to and detached from the connecting part from the same direction as the direction in which the bearing part is inserted and pulled out. One side in the axial direction of the first rotating portion is attached to and detached from the rod support frame.

According to the above configuration, since the pivot member can be attached to and detached from the rod support frame from one side in the axial direction of the first rotating portion, there is an advantage that attaching and detaching the pivot member to the rod support frame is easy and simple.

In a preferred embodiment, the second rotating part and the first rotating part are in a state of crossing each other on the upper side and the lower side, and are fixed to a common holding frame.

According to the above structure, there is an advantage that the second rotating part and the first rotating part in the state of intersecting each other on the upper side and the lower side are fixed by the common holding frame, and the overall size can be avoided and the structure can be compact. .

In a preferred embodiment, the operating lever has a shaft part pivotally supported by the second rotating part and extending in the vertical direction, and the shaft part is arranged as follows: viewed from the axial center direction of the first rotating part , located on a vertical line passing through the axis of the first rotating part.

According to the above structure, not only can the operation lever be swung directly around the axis of the second rotating part supported by the shaft, but also around the axis of the first rotating part that rotatably supports the second rotating part, the grip of the operating lever The operation lever is operated in a state where the position of the apex of the operation locus of the user is at a substantially constant position.

Therefore, there is an advantage that the first rotating part and the second rotating part do not need to adopt a structure in which the shaft centers intersect each other at one point, but are constituted by mutually different shafts and arranged in a state of intersecting up and down, the structure is simple and The operation lever is configured with good operability.

In a preferred embodiment, the swing operation of the operating lever around the swing axis in one direction is detected by a potentiometer, and the potentiometer detects the movement of the first rotating part around the swing axis in one direction. turn.

According to the above configuration, when the potentiometer detects the rotation of the operating lever around the swing axis of the first rotation part in one direction, the rotation of the second rotation part around the one direction along with the rotation of the first rotation part The rotation of the swing axis is restricted by the restricting portion. In this way, by restricting the rotation of the second rotation part by the restriction part, the rotation range of the first rotation part around the swing axis in the one direction is also limited, and as a result, there is an advantage that the operation lever can be swung The operating range corresponds exactly to the detection range of the potentiometer, and it is easy to adjust their corresponding relationship.

In a preferred embodiment, the harvesting section is provided with a raking reel for raking the planted crops, and a reel lifting device for adjusting the up and down position of the raking reel. The holding part of the handle is provided with an operation input part, and the operation input part is used to operate the reel lifting device to make the raking reel move up and down.

According to the above-mentioned structure, the operation input unit provided on the grip portion of the operating lever can be used to adjust the vertical position of the raking reel provided in the harvesting section with good operability, so that the harvesting section is equipped with a raking reel. Harvester gets a suitable structure.

For other characteristic structures and the beneficial effects generated therefrom, it can be understood by referring to the accompanying drawings and reading the following descriptions.

Description of drawings

Fig. 1 is a diagram showing the first embodiment of the present invention (hereafter, the same as Fig. 15 ), and is a right side view showing the whole of an ordinary type combine as an example of the harvester.

Fig. 2 is an overall plan view of a common type combine harvester.

Fig. 3 is a side view showing an operation lever and an operation interlocking mechanism.

Fig. 4 is a view from the direction of line IV-IV in Fig. 3 .

Fig. 5 is a view viewed from the direction of line V-V in Fig. 4 .

Fig. 6 is a sectional view taken along line VI-VI in Fig. 5 .

Fig. 7 is a sectional view taken along line VII-VII in Fig. 5 .

Fig. 8 is a rear view showing the operation lever and the operation interlocking mechanism.

Fig. 9 is a sectional view taken along line IX-IX in Fig. 7 .

Fig. 10 is a sectional view taken along line X-X in Fig. 5 .

Fig. 11 is a sectional view taken along line XI-XI in Fig. 5 .

Fig. 12 is an exploded perspective view showing an operation lever and an operation interlocking mechanism.

Fig. 13 is an explanatory view showing an operation mode of the operation interlocking mechanism.

Fig. 14 is an operation explanatory view showing a linkage structure between the parking brake and the shift operation element.

Fig. 15 is an operation explanatory view showing a linkage structure between the parking brake and the shift operation element.

Fig. 16 is a diagram showing a second embodiment of the present invention (the following is the same as Fig. 28 ), and is a right view showing the whole of an ordinary type combine as an example of a harvester.

Fig. 17 is an overall plan view of a common type combine.

Fig. 18 is a side view showing an operation lever and an operation interlocking mechanism.

Fig. 19 is a front view showing an operation lever and an operation interlocking mechanism.

Fig. 20 is a view viewed from the direction of line XX-XX in Fig. 19 .

Fig. 21 is a cross-sectional view taken along line XXI-XXI in Fig. 19 .

Fig. 22 is a sectional view taken along line XXII-XXII in Fig. 19 .

Fig. 23 is a rear view showing the operation lever and the operation linkage mechanism.

Fig. 24 is an exploded perspective view showing an operation lever and an operation interlocking mechanism.

Fig. 25 is an explanatory view showing an operation mode of the operation interlocking mechanism.

FIG. 26 is an explanatory diagram showing an operation input unit.

FIG. 27 is an explanatory diagram showing an operation input unit in another embodiment.

FIG. 28 is an explanatory diagram showing an operation mode of an operation interlocking mechanism in another embodiment.

detailed description

[first embodiment]

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 15 .

〔the whole frame〕

In FIG.1 and FIG.2, the common type combine which is an example of a harvester is shown.

This common type combine is equipped with the left-right paired crawler belt traveling apparatus 1, and comprises traveling body A. As shown in FIG. About this traveling body A, the driver part B and the reaping preprocessing apparatus C (corresponding to a reaping part) are installed in the front part position. And, at the rear position of traveling body A, be provided with: common type threshing device D, feeds the grain stalk harvested by reaping pretreatment device C; grains supplied by the threshing device D; and an unloader F for discharging the grains stored in the grain tank E to the outside of the body. Moreover, the fuel tank 23 is provided in the vehicle body frame 10 of the site|part corresponded between the grain tank E and the threshing apparatus D of the rear end part of the traveling body A. As shown in FIG.

Below the driver's seat 2 of the driver's section B, the engine 3 mounted on the vehicle body frame 10 is arranged, and at the central position of the front part of the traveling body A, an engine 3 from the engine is arranged across the vehicle body frame 10 up and down. 3 to the gearbox 4 that transmits the driving force of the left and right crawler belt traveling devices 1. In this gearbox 4, a continuously variable transmission device (not shown) is provided to continuously change the driving force from the engine 3, and a steering clutch (not shown) is built in to transmit it to the left and right crawler belt traveling devices 1. The driving force is connected/disconnected.

The harvesting pretreatment device C rakes up the ear tip side of the erected grain stalk by the rotation of the raking drum 5 , and cuts off the root of the grain stalk with the cutter 6 . Harvested grain stalks (harvested grain stalks) are infeed by infeed auger 7 and collected near the inlet of feeder 8 . The whole stalk is transported backwards by the feeder 8 and sent to the threshing device D.

In addition, the reaping pretreatment device C freely swings up and down around the horizontal axis center (outside the drawing) on the rear end side of the feeder 8 . The up and down swing of the feeder 8 is performed by a transmission device 18 such as a hydraulic cylinder provided across the vehicle body frame 10 and the lower part of the feeder 8 . By setting the swing amount by the operation of the transmission device 18, the harvesting height of the grain stalks can be adjusted.

The raking drum 5 disposed above the front end side of the feeder 8 swings up and down about a swing fulcrum (not shown) on the rear end side, thereby changing the height position relative to the feeder 8 . By changing the relative height of the raking drum 5 with respect to the feeder 8 in this way, it is possible to change the raking height of crops to be harvested, such as planting grain stalks, without changing the harvesting height. Although not shown in the figure, the change of the height position of the raking drum 5 is performed by telescopic operation of a drum elevating device composed of a hydraulic cylinder or the like interposed between the feeder 8 and the like.

The threshing device D includes an axial-flow type threshing cylinder (not shown), which is rotationally driven around an axis that follows the posture in the front-back direction of the traveling body A so as to thresh the harvested grain stalks supplied to the threshing chamber. and a sorting processing device (not shown) for sorting grains from the processed material obtained through the threshing process.

Among the grains sorted out in the sorting treatment device, the primary material is supplied to the grain box E through the grain lifting device 9, and the secondary material is returned to the threshing chamber (not shown) where the threshing cylinder rotates through the secondary returning device 19. As shown in the figure), straw chips other than grains are dropped and released from the rear of the sorting treatment device to the rear of the traveling body A.

The grain tank E is equipped with the tank main body 20, and stores the grain supplied from the grain raising device 9. The box main body 20 is rotated around the vertical axis Y of the longitudinal posture of the rear position of the traveling body A, so as to be in the working posture (the posture shown by the solid line in FIG. 2 ) and the maintenance posture (the posture shown by the virtual line in FIG. It is supported in a way to freely switch between postures, the working posture is a posture stored in the traveling body A, and the inspection posture is a posture extending laterally from the traveling body A.

The said up-down axis Y which is the turning center of this grain tank E coincides with the cylinder axis center of the vertical conveyance cylinder 31 with which the unloader F provided in the rear surface side of the tank main body 20 is equipped.

The unloader F is provided with: a straight pipe-shaped vertical conveying cylinder 31, which is vertically arranged upward; and a horizontal conveying cylinder 32, which is at the upper end of the vertical conveying cylinder 31 so as to be able to surround the vertical axis Y together with the vertical conveying cylinder 31. It swings left and right and can swing up and down around the horizontal horizontal axis X. The vertical conveying cylinder 31 and the lateral conveying cylinder 32 are each constituted by a known screw conveyor in which a conveying screw is incorporated.

And, on the rear side of the box main body 20, a discharge cylinder 22 is provided, which protrudes rearward to support the discharge side end of the bottom screw 21 in the box main body 20, and on the top of the discharge cylinder 22, a The unloader F. That is, the vertical conveying cylinder 31 is vertically provided on the upper part of the discharge cylinder 22 to form an upward vertical conveying path, and the horizontal conveying cylinder 32 arranged on the upper end of the vertical conveying cylinder 31 is connected to form a horizontal conveying path. path.

The vertical conveyance cylinder 31 is connected to the discharge cylinder portion 22 so as to be rotatable about the vertical axis Y via the rotation drive mechanism 33 . The rotation drive mechanism 33 is comprised by the gear part not shown provided in the outer periphery of the lower end part of the vertical conveyance cylinder 31, the pinion gear meshed with this gear part, and the electric motor which drives the pinion gear, etc. FIG.

The horizontal conveying cylinder 32 is installed in such a manner that it can undulate and swing around the horizontal horizontal axis X as the hydraulic cylinder 34 provided between the horizontal and the upper part of the vertical conveying cylinder 31 expands and contracts.

〔Take the driving department〕

The driver's seat B is provided with a box-shaped hood 11 covering the upper side of the engine 3 , and a driver's seat 2 is provided on the upper surface of the hood 11 . An air intake box 11A is formed on the outer side of the engine hood 11, and an air intake portion 11B is formed on the outer surface side of the air intake box 11A for sucking cooling air and is provided with a dust filter.

On the front side of the driver's seat 2, a console 12 is erected, and on the upper surface side of the console 12, an operating lever 13 is provided to swing freely back and forth and left and right. An operator, and an operator for controlling the lifting of the reaping pretreatment device C.

As shown in FIGS. 1 and 2 , a side panel 14 is provided on the left side of the driver's seat 2 , and the side panel 14 extends rearward from the left lateral end position of the console 12 . On an upper surface 14A of a front end portion of the side panel 14, a main shift lever 15A and an auxiliary shift lever 15B are provided as shift operating elements 15 for controlling the traveling speed of the traveling body A. As shown in FIG.

And on the upper surface 14A side of the side panel 14, the threshing clutch lever 16A and the reaping clutch lever 16B are provided in the state lined up on the left and right as the work clutch lever 16 at the rear side position of the speed change operation element 15. The threshing clutch lever 16A and the reaping clutch lever 16B connect/disconnect the threshing clutch (not shown) in the threshing device D by swinging the threshing clutch lever 16A back and forth, and the harvesting clutch lever 16B swings back and forth. The harvesting clutch (not shown) of the harvesting preprocessing apparatus C is connected/disconnected.

Furthermore, a discharge clutch lever (not shown) is provided on the side panel 14 . The discharge clutch lever is an operation member for switching on/off operation of the discharge clutch G (see FIG. 1 ) to switch between a state where the discharge of grains can be performed by the unloader F and a state where the discharge of grains is stopped. The discharge clutch G communicates/disconnects the driving force from the engine 3 to the bottom auger 21 of the grain tank E.

As shown in FIG. 4 , the operating lever 13 provided on the upper surface side of the console 12 is maintained at a neutral position N in an upright posture in a non-operated state. The operation lever 13 is operable to swing in the left and right directions so as to be operable to the left swivel position L and the right swivel position R with the neutral position N as a reference.

When the operation lever 13 is swung in the left and right directions, the operation arm of the steering control valve V1 (corresponding to the steering drive part. Refer to FIG. 4 ) is pushed and pulled through the operation interlocking mechanism H described later. Operation, the steering clutch built in the gearbox 4 is connected/disconnected, thereby realizing the steering (rotation) of the traveling body A. Moreover, by operating the control lever 13 in the front-back direction, the lift control valve V2 (corresponding to the lift drive unit; refer to FIG. 3 ) controlling the actuator 18 can be operated, and the harvesting pretreatment device C can be raised and lowered.

〔About the operation linkage mechanism〕

In FIGS. 3 to 12 , the control lever 13 serving also as an operator for raising/lowering control of the reaping pretreatment apparatus C and an operator for steering the traveling body A is shown. Swing operations in the front-back and left-right directions of the control lever 13 are transmitted to the lift control valve V2 as a lift drive unit and the steering control valve V1 as a steering drive unit via an operation interlock mechanism H configured as follows.

The operation lever 13 installed upright on the upper surface side of the console 12 transmits its front-back and left-right swing operations to the lift drive unit and the steering drive unit via the operation interlocking mechanism H provided inside the console 12 .

As shown in FIGS. 3 to 9 , the operation interlocking mechanism H includes: a rod support frame 50 fixed inside the console 12 ; and a pivot member 60 supported by the rod support frame 50 . The shaft supporting member 60 is provided with: a first rotation part 60A having a swing axis x1 in one direction, and supporting the operation lever 13 so as to be able to swing in the left and right directions; y1 supports the operation lever 13 so as to swing forward and backward.

Among the above-mentioned two swing axes x1, y1, the swing axis x1 in one direction along the front-rear direction of the traveling body A is the axis of the swinging action of the operating lever 13 to the left and right, and along the direction of the traveling body A The swing axis y1 in the other direction of the left-right direction is the axis of the swing operation of the operation lever 13 in the forward-backward direction.

〔Rod support frame〕

3 to 6, on the lower side of the upper surface 12a of the console 12, between the front and rear walls of the console 12, a pair of left and right L-shaped mounting brackets 12b, 12b are welded and fixed. And the upper wall part 50U, 50U provided in the left and right sides of the rod support frame 50 is bolt-connected to this attachment bracket 12b, 12b, and the rod support frame 50 is fixed to the console 12. As shown in FIG.

The rod support frame 50 includes: a front wall portion 50F located on the front side in the front-rear direction; and the upper wall portions 50U, 50U connected to upper end sides at left and right sides of the front wall portion 50F. That is, the rod support frame 50 is made of an integral material made of a metal plate, and the upper wall portions 50U, 50U are bent rearward at the upper portions of the left and right sides of the front wall portion 50F. The upper end side of the upper end side is connected with the upper wall part 50U, 50U which has an upward surface, so that it bends and forms a substantially L-shape in side view.

A bearing boss portion 51 is integrally welded and fixed to the front wall portion 50F, penetrates the front wall portion 50F, and protrudes to both front and rear sides. The bearing boss portion 51 supports the shaft portion 61 (corresponding to the pivot shaft for supporting the operation lever 13 ) included in the shaft support member 60 in a fitted state, thereby constituting a first shaft having a swing axis x1 in the one direction. A rotating portion 60A.

On the upper end portion of the front wall portion 50F, on the upper portion of the bearing boss portion 51, a fixed locking pin 52 is welded and fixed toward the front side of the front wall portion 50F, and the fixed locking pin 52 protrudes to the front side. It is more or less the same as the bearing boss portion 51 . The fixing locking pin 52 is used to lock an end portion of a steering neutral return spring 75 described later to return the operation lever 13 steered to either the left or right to the neutral position N. As shown in FIG.

As shown in FIGS. 6 to 8 and 12, a first restricting portion 55 is provided on the upper part of the rod support frame 50, and the swing range that is one of the front-rear direction and the left-right direction of the operating rod 13 is set to the left and right. The swing range of the direction is limited within the specified range.

The first restricting portion 55 is formed of a middle portion located between the left and right upper wall portions 50U, 50U so as to set the limit of the laterally swinging range of the operating lever 13 within a predetermined angular range. One end edge 53 (corresponding to the abutting portion) of the portion facing the pivot member 60 among the end edges of the protruding piece 50C and the inner and outer end edges of the left and right upper wall portions 50U, 50U are in contact with the one end edge. The end edge 54 (corresponding to the abutting portion) of the portion facing the 53 is constituted.

As shown by the phantom line in FIG. 8, due to the presence of the first restricting portion 55, when the pivot member 60 is operated to the right as the operation lever 13 swings to the right, the contact portion formed near the upper end thereof will 60a abuts against one end edge 53 of the middle protruding piece 50C, and restricts it from being operated in the clockwise rotation direction by a larger amount.

When the operation lever 13 is swung to the left and the pivot member 60 is tilted to the left, the left side of the core frame 63 included in the pivot member 60 in the vicinity of the upper end and the upper wall portion 50U on the left side are aligned with each other. The edge 54 of the opposing portion of 63L abuts against and restricts it from being operated in the left rotation direction by a larger amount.

In this way, the limit of the swing range of the operation lever 13 around the swing axis x1 of the shaft portion 61 pivotally supported by the first rotation portion 60A is limited by the mechanical contact of the first restricting portion 55 .

〔Shaft support member〕

The shaft support member 60 supported by the rod support frame 50 includes: a first rotation part 60A having a swing axis x1 in one of the front-rear direction and the left-right direction of the operation lever 13; and a second rotation part 60B having the operation The swing axis y1 in the other direction of the front-back direction and the left-right direction of the rod 13 .

The pivot member 60 including the first pivoting portion 60A and the second pivoting portion 60B includes: a core frame 63 formed in a groove shape that is open rearward in plan view; extension; and the cylindrical shaft portion 62 protruding from the left side surface 63L of the core frame 63 toward the left lateral direction.

On the right side surface 63R of the core housing 63 , a mounting portion for a potentiometer 80 for detecting the rotation angle of the operation shaft 13A provided at the proximal end portion of the operation lever 13 is provided.

The first turning portion 60A and the second turning portion 60B are each configured as follows.

First, in the first pivoting portion 60A, the shaft portion 61 extending forward from the core frame 63 is welded and fixed in a state passing through the front face 63F of the core frame 63 of the pivot member 60 front and back. The shaft portion 61 is inserted into the bearing boss portion 51 that penetrates through the front wall portion 50F of the rod support frame 50 and protrudes to the front and rear sides, so that the shaft portion 61 can rotate around the shaft portion 61 in one direction through the core frame body 63 . The operation lever 13 is supported so as to swing at x1, thereby constituting the first rotating portion 60A that supports the operation lever 13 so as to swing freely in the left and right directions.

In addition, in the second rotation portion 60B, the cylindrical shaft portion 62 is integrally welded and fixed to the left side surface 63L of the core frame body 63 toward the left lateral direction. The operation shaft 13A provided at the base end portion of the operation lever 13 is embedded in the cylindrical shaft portion 62, and the operation is supported so as to be capable of swinging around the swing axis y1 in the other direction as the cylindrical shaft center of the cylindrical shaft portion 62. The lever 13 thus constitutes a second pivot portion 60B that supports the operation lever 13 so as to swing freely in the front-rear direction.

In the operation lever 13, at a portion along the shaft direction of the operation lever 13 that is away from the swing axis y1 in the other direction as the axis of the operation shaft 13A provided at the proximal end thereof by a predetermined distance, toward the swing axis. A locking operation body 13B protrudes in a direction parallel to the center y1. The locking operating body 13B is used to engage with the lifting neutral return spring 76 described later as the operating lever 13 swings forward and backward around the swing axis y1, so that the lifting neutral return spring The return action to the neutral position N achieved by 76 is transmitted to the operating lever 13 .

In addition, on the upper end side of the left side surface 63L of the core frame 63, there is provided a second valve that abuts against the locking operation body 13B and limits the allowable swing range of the control lever 13 around the swing axis y1 within a predetermined angle range. Two restricting parts 65 .

As shown in FIG. 5 to FIG. 7 and FIG. 9 , the second restricting portion 65 is formed by a groove portion in which the upper end edge of the left side surface 63L of the core frame 63 is partially recessed. As shown by the imaginary line in Fig. 9, the two ends of the groove portion of the second restricting portion 65 are formed with: the abutting portion 65a on the front side, which locks the operating body 13B so that the harvesting pretreatment device C descends. and the abutment part 65a on the rear side abuts when the locking operation body 13B is operated to the swing limit on the rear side so that the reaping pretreatment device C rises.

On the left side surface 63L of the core frame 63 , a neutral regulating pin 64 is formed to protrude laterally leftward in a state positioned between the locking operation body 13B at the neutral position N and the cylindrical shaft portion 62 . This neutral regulating pin 64 is engaged with one end side of both end portions of a lifting neutral return spring 76 wound around the outer peripheral surface of the cylindrical shaft portion 62 . When the locking operation body 13B on the other end side is locked and moves in the front-rear direction as the operating lever 13 is swung in the front-back direction, the lifting neutral return spring 76 locked on the side of the locking operation body 13B Elastic deformation occurs at the end as shown by the virtual line in Fig. 9 .

At this time, since the position of the neutral regulating pin 64 does not change, the elastic restoring force generated by the elastic deformation of the lifting neutral return spring 76 acts in a direction to return the locking operation body 13B to the neutral position N side. Thereby, when the hand is released, the operation lever 13 returns to the neutral position.

The swing operation of the operation lever 13 around the front-rear direction, that is, the swing axis y1 of the second turning portion 60B is detected by the potentiometer 80 connecting the input shaft 81 to the operation shaft 13A. And, as shown in FIG. 4, the detection result of the potentiometer 80 is transmitted to the control device 83 constituted by the microcomputer, and the control device 83 operates the electric motor 84, thereby actuating the lift control valve V2 as the lift drive part, so that The hydraulic oil is supplied and discharged to the transmission device 18 for elevating, and the transmission device 18 for elevating is caused to expand and contract, thereby performing the elevating operation of the reaping pretreatment device C.

In this way, by transmitting the swing operation of the operating lever 13 around the front-back direction, that is, the swing axis y1 of the second rotating portion 60B, to the operating shaft 13A (corresponding to the output operating body) of the potentiometer 80, the potentiometer 80, and the control device 83 , an electric motor 84, and the like constitute a lift unit U2 that links the lift control valve V2 as a lift drive unit with the operating rod 13.

In this elevating unit U2, the flexible linkage mechanism I described later is not equipped.

As shown in FIGS. 5 and 6 , the shaft portion 61 included in the first rotation portion 60A extends further forward than the portion fitted in the bearing boss portion 51 that penetrates the front wall portion 50F of the rod support frame 50 . In addition, a plate-shaped operating bracket 70 is fixed to the axial end of the shaft portion 61 protruding forward from the bearing boss portion 51, and the shaft portion between the operating bracket 70 and the end of the bearing boss portion 51 A boss portion 71A (corresponding to a cylindrical shaft portion) of the output operation body 71 is fitted on the outside.

In the distal end portion of the shaft portion 61 , the distal end side outer peripheral portion of the shaft portion 61 is processed into an elliptical cross-sectional shape, and a threaded hole 61 a is screwed in the shaft end portion. In addition, an elliptical engagement hole 70a into which the distal-side outer peripheral portion of the shaft portion 61 having an elliptical cross-sectional shape is fitted is formed at an intermediate position in the vertical direction of the operation bracket 70 . With this configuration, the stopper bolt 77 is screwed into the threaded hole 61 a to connect with the engagement hole 70 a of the operation bracket 70 fitted to the shaft end portion of the shaft portion 61 formed in an elliptical cross-sectional shape. Fixed, the operation bracket 70 also rotates integrally with the rotation of the shaft portion 61 .

As shown in Figure 5 and Figures 11 and 12, at the lower end of the operating bracket 70, a locking hook 70b (equivalent to locking hook 70b) that is bent to the rear side and intersects with the plate surface of the operating bracket 70 is connected. body).

And, both ends of the coil spring 74 (corresponding to the elastic body of the flexible interlock mechanism 1) wound around the boss portion 71A of the output operation body 71 are sandwiched between the locking hook portion 70b and the lower side from the left and right sides. The locking pin 73 (corresponding to the spring locking portion) provided on the output operation body 71 is set in both states.

At this time, both ends of the coil spring 74 are attached to the locking hook 70 b and the locking pin 73 as follows. That is to say, it is installed in the following manner: in the figure of FIG. It is located on the right as shown in Figure 11.

As a result, when the locking hook 70 b moves to the side away from the locking pin 73 of the output operating body 71 as the operating bracket 70 swings, it becomes a spiral that will be wound around the boss portion 71A of the output operating body 71 . The state in which the spring 74 is wound up side operated.

On the upper portion of the operation bracket 70, an operation pin 70c protruding rearward is provided. The operation pin 70c is provided in such a manner as to act on the steering neutral return spring 75 wound on the bearing boss portion 51 of the rod support frame 50, and is used to swing the operation rod 13 around the swing axis x1 of the shaft portion 61. On the other hand, when turning to the right turning position R or the left turning position L, an urging force is applied in a direction to return the operation lever 13 to the neutral position N side.

That is, the steering neutral return spring 75 wound around the bearing boss portion 51 of the rod support frame 50 is attached in a state of sandwiching the fixed locking pin 52 and the operation pin 70c provided on the rod support frame 50 from both left and right sides. The steering neutral return spring 75 is also installed so that as the operating lever 13 is operated in the turning direction, the operating pin 70c moves away from the fixed locking pin 52, and then becomes a bearing protrusion that will be wound around the rod supporting frame 50. The platform 51 turns to a state where the neutral return spring 75 is wound up.

In the output operation body 71 mounted on the shaft portion 61 so as to be relatively freely rotatable, the locking pin 73 is provided on a swinging portion integrally provided with the boss portion 71A so as to protrude toward the side opposite to the operation bracket 70 . plate portion 71B. Further, toward the side opposite to the side from which the locking pin 73 protrudes, a fixing pin 72 for connecting an interlocking cable 82 as a means for operating the steering valve V1 protrudes.

The fixing pin 72 is provided in such a state that it has a central axis x4 at a position farther from the pivotal axis x1 of the shaft portion 61 than the central axis x3 of the locking pin 73 , but is farther from the pivotal axis x1 of the shaft portion 61 . The distance from x1 to the central axis x4 may be appropriately determined according to the operation stroke of the steering control valve V1 and the like. Therefore, the central axis x4 of the fixing pin 72 may be provided at the same position as the central axis x3 of the locking pin 73, or may be located closer to the swing axis x1 of the shaft portion 61 than the central axis x3 of the locking pin 73. parts.

In addition, the fixing pin 72 may be set to protrude to the same side as the protruding side of the locking pin 73, or the locking pin 73 itself may protrude to the side opposite to the side opposite to the operation bracket 70, so that the locking pin 73 It also serves as the fixing pin 72 .

As shown in FIG. 4, the interlocking cable 82 detachably connected to the fixed pin 72 is linked with the steering control valve V1, and the swing of the control lever 13 around the swing axis x1 of the first rotating part 60A in the left-right direction. In conjunction with the operation, the steering control valve V1 as a steering drive unit is switched, and the steering clutches of the traveling device (not shown) are connected/disconnected on the left and right, respectively, and the body is turned.

In this way, the steering unit U1 is constituted by the interlocking cable 82 , the core frame 63 , the shaft portion 61 , the output operating body 71 , etc. Set in a linkage manner, the core frame body 63, the shaft portion 61, and the output operating body 71 transmit the swing operation of the operating rod 13 in the left and right direction, that is, around the swing axis x1 of the first rotating part 60A, to the linkage cable in the operation linkage mechanism H. 82.

〔Flexible linkage mechanism〕

Between the operating lever 13 and the output operating body 71 in the steering unit U1, a state in which the output operating body 71 moves integrally following the swinging motion of the operating lever 13 is exhibited, and the output operating body 71 does not integrally follow the operating lever 13 allows The mode of the state that operating lever 13 carries out swinging action independently is provided with flexible linkage mechanism 1.

This flexible linkage mechanism 1 is constituted in the following manner.

That is, the flexible interlocking mechanism 1 includes: a coil spring 74 wound around a boss portion 71A on the front side of the swing plate portion 71B of the output operation body 71; a locking pin 73 protruding forward from the swing plate portion 71B; and The locking hook portion 70 b is bent from the lower end portion of the operation bracket 70 , which swings around the swing axis x1 of the shaft portion 61 as the operation lever 13 swings, toward the output operation body 71 .

As shown in (a) of FIG. 13 , in the state where the operating lever 13 is located at the neutral position N, the swing axis x1 of the operating lever 13 around the first rotating portion 60A, the central axis x2 of the locking hook portion 70b, and The center axis x3 of the locking pin 73 is arranged so as to be aligned on a vertical line L1 passing through the swing axis x1 of the control lever 13 and along the shaft.

That is, the line segment L2 connecting the swing axis x1 of the operating lever 13 and the central axis x2 of the locking hook 70b, and the line segment L3 connecting the swing axis x1 and the central axis x3 of the locking pin 73 of the output operation body 71 It is in a state aligned with the vertical line L1 passing through the swing axis x1 of the control lever 13 and along the shaft.

At this time, both ends of the coil spring 74 wound around the boss portion 71A are sandwiched between the locking hook portion 70b formed by bending toward the rear side of the operation bracket 70 and the locking hook portion 70b protruding forward from the output operation body 71 . The fixed pins 73 are distributed on both sides of the vertical line L1.

In addition, although not described in FIG. 13 , as shown in FIGS. 6 and 8 , a steering neutral is wound around the bearing boss portion 51 of the rod support frame 50 that fits and supports the shaft portion 61 of the first turning portion 60A. The return spring 75 is turned to both ends of the neutral return spring 75 to clamp the fixed locking pin 52 protruding forward from the rod support frame 50 and the operation pin 70c extending backward from the operation bracket 70 from both sides. status configuration.

As shown in (b) of Figure 13, when the operating lever 13 is swung to the left (or right) by a predetermined angle, the locking hook 70b rotates clockwise around the swing axis x1 of the first rotating part 60A. With this swing, the locking pin 73 also swings in the same direction via the coil spring 74 . The interlocking cable 82 is stretched according to the swing of the locking pin 73, and the steering valve V1 is switched to the left turning side (see FIG. 4 ). In this state, with respect to the vertical line L1 passing through the swing axis x1 of the operating lever 13, the line segment L2 connecting the swing axis x1 and the central axis x2 of the locking hook 70b, and the line segment L2 connecting the swing axis x1 and the locking pin The line segment L3 of the central axis x3 of 73 is oscillated at the same angle.

At this time, although it is not described in FIG. 13 , one end side of the steering neutral return spring 75 is locked to the fixed locking pin 52, and the other end side is locked to the locking hook 70b, thereby fixing the locking pin 52 and the operation pin. The distance between 70c is elastically expanded around the swing axis x1 by the swing of the operation pin 70c. As a result, the steering neutral return spring 75 is in a state where the operation lever 13 is biased back to the neutral side. However, the coil spring 74 swings around the swing axis x1 while holding the locking hook 70 b and the locking pin 73 , so the coil spring 74 in this state does not function as a swing resistance of the operation lever 13 .

When the interlocking cable 82 connected to the fixed pin 72 is stretched and the steering control valve V1 reaches the left rotation position L (the stroke end position in the figure), the steering clutch (not shown) passes through the oil switched by the steering control valve V1. The road switches to the state of turning left, and the traveling body A turns left. When turning the traveling body A to the right, the operation lever 13 is swung to the right by a predetermined angle. As a result, the locking hook 70b swings counterclockwise, the steering valve V1 pushed by the interlocking cable 82 made of a push-pull wire is switched to the right-turn position R, and the traveling body A turns right.

(c) of FIG. 13 shows a state in which the steering control valve V1 stretched by the interlocking cable 82 connected to the fixed pin 72 reaches the left turn position L (stroke end position in the figure), and the operating lever 13 is moved further toward Left (right in FIG. 13 ) swing operation, so that the locking hook 70b swings clockwise around the swing axis x1 of the first rotating portion 60A, and moves to the side away from the central axis x3 of the locking pin 73 . At this time, for the operation lever 13 , when the pivot member 60 comes into contact with the first restricting portion 55 of the lever support frame 50 , larger swinging can be restricted.

In this state, with respect to the vertical line L1 passing through the swing axis x1 of the operating lever 13, the line segment L3 connecting the swing axis x1 and the central axis x3 of the locking pin 73 is more likely to connect the swing axis x1 and the locking pin 73. The line segment L2 of the central axis x2 of the fixed hook portion 70b is oscillated to become larger.

This is a state in which the operating lever 13 is further swung leftward (rightward in FIG. 13 ) from the state shown in FIG. 13( b ). In this state, the locking hook portion 70b swings clockwise around the swing axis x1 of the first rotating portion 60A and exceeds the stroke end position, but is connected to the steering control valve V1 that has reached the stroke end through the interlocking cable 82 . The fixing pin 72 remains in the original state shown in (b) of FIG. 13 .

Therefore, even if, for example, the position of the stroke end of the steering valve V1 does not coincide with the swing operation limit position of the operating lever 13 due to the amount of swing operation of the operating lever 13 being set by the lever guide groove, etc., the operating lever 13 exceeds the stroke of the steering control valve V1. The operation force of the operation lever 13 is not transmitted to the steering control valve V1, so that it is convenient to use.

In this overrun state, the distance between the locking hook portion 70 b and the locking pin 73 expands around the swing axis x1 against the elastic biasing force of the coil spring 74 . Therefore, in addition to the urging force of the steering neutral return spring 75 urging the operation lever 13 back to the neutral side, the elastic urging force of the coil spring 74 also acts as an operation resistance to the swing operation of the operation lever 13 . This is also advantageous in that it is easy to recognize that unnecessary operation of the operation lever 13 has been performed.

〔Others (Parking Brake Structure)〕

14 and 15 show the linkage structure between the shift operating member 15 and the parking brake operating mechanism 40 .

In the shifting operation member 15, the main shift lever 15A operates a non-illustrated continuously variable transmission device in the gearbox 4, thereby performing stepless forward and reverse shifting of the traveling body A, and the main shift lever 15A is connected to the parking brake. The operating mechanism 40 is linked with the neutral return mechanism 100 . That is, regardless of the shift operation position to which the main shift lever 15A is operated, the parking brake pedal 41 is forcibly returned to the neutral position as the parking brake pedal 41 is stepped on.

The interlocking structure of the parking brake operating mechanism 40 and the neutral return mechanism 100 is configured as follows.

The parking brake operating mechanism 40 includes a tread surface 41A that can be stepped on on the upper surface side of the step platform 17 of the cab B, includes a parking brake pedal 41 , and has a swing arm portion 41B on the lower surface side of the step platform 17; 42 , which supports the swing arm portion 41B in a freely swingable manner; and an operating lever 43 , which transmits the swing motion of the swing arm portion 41B to the operating arm 44 of the parking brake 45 .

A return spring 46 is provided on the swing arm portion 41B, and is stretched and biased so as to bias the parking brake 45 toward the disengagement side and return the parking brake pedal 41 to the release side by depressing the parking brake pedal 41 . A compression spring 47 having a spring constant larger than that of the return spring 46 is interposed between the connecting portion of the swing arm 41B and the operating lever 43 , and the stepping operation of the parking brake pedal 41 is transmitted to the parking brake 45 via the compression spring 47 .

In the vicinity of the tread surface 41A of the parking brake pedal 41 , a locking pin 41C is provided so as to protrude laterally away from the tread surface 41A. Near the front of the parking brake pedal 41, a locking device 90 is provided at a portion laterally deviated from the swing locus of the tread 41A, and locks the stepped parking brake pedal 41 in a stepping posture to maintain the braking state.

The lock device 90 pivotally supports a lock plate 92 so as to be able to swing around a horizontal shaft 91 provided on the lower surface side of the step 17 . With respect to the movement trajectory of the locking pin 41C extending laterally from the tread surface 41A of the parking brake pedal 41, the hook portion 92a provided on the free end side of the lock plate 92 can move at a position intersecting the movement trajectory and at a position away from the movement trajectory. Change poses between front side positions.

The lock plate 92 is biased by the coil spring 93 about the horizontal axis 91 to the side away from the moving track of the locking pin 41C. In addition, the posture of the operation lever 94 fixed to the lock plate 92 by integral welding can be changed around the horizontal axis 91 .

Therefore, as shown in FIG. 15 , in the state where the parking brake pedal 41 is depressed, the lock plate 92 is moved to a position intersecting with the moving locus of the locking pin 41C by the operating lever 94 to be locked, thereby maintaining the parking brake pedal 41C. A braking state in which the parking brake pedal 41 is depressed.

In order to release the braking state, as long as the parking brake pedal 41 is stepped on lightly, the engagement state between the hook portion 92a of the locking plate 92 and the locking pin 41C can be released by the force of the coil spring 93, and the state is restored to the state shown in FIG. 14 . The displayed brake release status.

The main shift lever 15A is forcibly returned to the neutral position N in accordance with the above-mentioned stepping operation of the parking brake pedal 41 . The return of the main shift lever 15A to the neutral position N is performed by the neutral return mechanism 100 .

That is, the support member 101 that supports the main shift lever 15A in a swingable manner is pivotally supported by a swing shaft 102 that is linked to the shift operation portion, and is free to swing. Link rods 103 , 103 of the same specification are connected to both ends of the support member 101 , respectively. Elongated holes 103a, 103a are formed in lower end portions of the respective linkage rods 103, 103. As shown in FIG. The elongated holes 103a, 103a are engaged with a common locking pin 105 provided in the operation arm 104 supported by the lateral fulcrum shaft 42 so as to swing integrally with the swing arm portion 41B.

The support member 101 , the link levers 103 , 103 , the elongated holes 103 a , 103 a , the operating arm 104 , and the locking pin 105 constitute the neutral return mechanism 100 .

Therefore, in the non-braking state of the parking brake 45 shown in FIG. 14 , the main shift lever 15A can be freely operated to either the forward shift side or the reverse shift side within the length range of the elongated holes 103a, 103a.

And, as shown in FIG. 15 , when the parking brake pedal 41 is depressed from the non-braking state, the locking pin 105 pulls the ends of the elongated holes 103a, 103a downward, and the support member 101 returns to a substantially horizontal position. posture, the main shift lever 15A returns to the neutral position N state.

In this neutral return mechanism 100, when the parking brake pedal 41 is stepped on, it is desirable to set the timing so that the main shift lever 15A is activated before the timing when the parking brake 45 reaches the braking state. Return to neutral position N.

[Other embodiments of the first embodiment]

[Other embodiment 1]

In the above-mentioned embodiment, the harvester of the structure which performs the lifting operation of the harvesting pretreatment device C by the operation of the front-back direction of the control lever 13, and performs the steering operation of the traveling body A by the operation of the left-right direction of the control lever 13 is shown, But not limited to this.

For example, even if it is a harvester with a structure in which the harvesting pretreatment device C is raised and lowered by operation of the operation lever 13 in the left and right direction, and the steering operation of the traveling body A is performed by operation of the operation lever 13 in the front and rear directions.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 2]

In the said embodiment, the harvester of the structure which integrated the flexible interlock mechanism I in the steering unit U1 which performs the steering control of the operation lever 13 to the left-right direction was shown by example, but it is not limited to this structure.

For example, it may also be a harvester in which a flexible linkage mechanism 1 is assembled in the lifting unit U2 that performs lifting control in the front-back direction of the operating rod 13, or a flexible linkage mechanism 1 is assembled in both the steering unit U1 and the lifting unit U2. structure of harvester.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 3]

In the above-mentioned embodiment, the harvester with the structure in which the flexible interlock mechanism I is assembled in the steering unit U1 that performs steering control of the operating lever 13 in the left and right direction is shown as an example, but even if it is a structure that does not have such a flexible interlock mechanism I The Harvester doesn't hurt either.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 4]

In the above-mentioned embodiment, the harvester of the structure which transmits the operation of the operation lever 13 forward-backward or left-right direction to the steering control valve V1 or the lift control valve V2 and controls it by hydraulic pressure is shown, but it is not limited to the structure.

For example, although not shown in the figure, the following structure can be adopted: a steering clutch for steering operation and a lifting clutch for lifting operation are provided, and the steering clutch, lifting action clutch and the operation linkage mechanism H of the operating rod 13 are directly connected through the linkage cable 82. are connected so that the switching operation can be performed by manipulating the operation lever 13 .

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 5]

In the above-described embodiment, the connection portion of the interlocking cable 82 to the output operation body 71 is constituted by the dedicated fixing pin 72 , but the present invention is not limited thereto.

For example, the locking pin 73 may be extended to the side opposite to the swing plate portion 71B, and the locking pin 73 may also be used as the fixing pin 72 , or an engaging portion such as a hole may be provided instead of a pin to connect the interlocking cable 82 . In addition, the connecting portion of the interlocking cable 82 is not limited to the side opposite to the side where the locking pin 73 is located, and the connecting portion may be provided on the same side as the locking pin 73 .

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 6]

In the above-described embodiment, the configuration including the locking pin 73 protruding toward the operation bracket 70 side was shown as an example of the spring locking portion provided on the output operation body 71 , but the present invention is not limited thereto.

For example, although not shown in the figure, a structure may be adopted in which a part of the output operation body 71 protrudes toward the operation bracket 70, or conversely, the end of the coil spring 74 protrudes and bends toward the output operation body 71, and is connected with the output operation body 71. The operating body 71 is engaged.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 7]

In the above-mentioned embodiment, as the locking body provided on the operation bracket 70, the locking body having the structure of the locking hook portion 70b bent from the side of the operation bracket 70 to the side of the output operation body 71 was shown as an example. limited to this.

For example, although it is not shown in the figure, it may be a locking body in which a part engaging with a part of the operation bracket 70 in the left-right direction is provided at the end of the coil spring 74, and the end of the coil spring 74 moves along with the operation bracket. 70 swing and move in the same direction.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 8]

In the above-mentioned embodiment, as the first restriction portion 55 , the configuration in which the end edge 53 and the end edge 54 abutting on the shaft support member 60 are provided on the side of the rod support frame 50 to set the operation limit of the operation rod 13 is shown as an example. The first limited section, but not limited thereto.

For example, although not shown, an opening may be formed in the front wall portion 50F of the rod support frame 50, etc., and a rod-shaped portion inserted into the opening may be provided in the shaft support member 60, or conversely, a rod-shaped member may be protruded from the rod support frame 50 side. A member having an opening through which a rod-shaped member can be inserted is attached to the first rotating portion 60A side of the pivot member 60 , thereby restricting the lateral swing range of the pivot member 60 side.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 9]

In the above-mentioned embodiment, as the second restricting portion 65 , the locking operation body 13B provided on the operating lever 13 side and the abutting portion 65a of the groove portion provided at the upper end of the core frame 63 were exemplified to restrict the second restricting portion 65 . The second restricting part of the structure of the forward and backward swing range of the operating lever 13, but not limited thereto.

For example, although not shown, an appropriate structure may be adopted such that an opening is formed on the right side 63R or left side 63L on the side of the core frame 63, and the locking operation body 13B is inserted into the opening, or vice versa. On the right side 63R or the left side 63L of the housing 63 side, protrusions are provided at predetermined intervals, and the locking operation body 13B or the shaft portion of the operation lever 13 is located between the protrusions, thereby restricting forward and backward swinging. scope.

Other structures may be the same as those of the above-mentioned embodiment.

[Second Embodiment]

Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 16 to 28 .

〔the whole frame〕

In FIG.16 and FIG.17, the common type combine which is an example of a harvester is shown.

This common type combine is equipped with the self-propelled body A (corresponding to a traveling body) which travels with the left-right paired crawler belt traveling apparatus 201. With regard to this self-propelled body A, a driving part B and a reaping pretreatment device C (corresponding to a reaping part) are provided at the front position. And, at the rear position of self-propelled body A, be provided with: common type threshing device D, feed the grain stalk harvested by harvesting pretreatment device C; Grain box E (equivalent to grain storage part), store The grain supplied from the threshing apparatus D; and the unloader F for discharging the grain stored in the grain tank E to the outside of the body. Moreover, the fuel tank 223 is provided in the vehicle body frame 210 corresponded to the site|part between the grain tank E and the threshing apparatus D in the rear end part of the self-propelled body A. As shown in FIG.

Below the driver's seat 202 of the driving unit B, the engine 203 mounted on the vehicle body frame 210 is arranged. The transmission 204 which transmits the driving force of the engine 203 to the right and left crawler 201. In this gearbox 204, a continuously variable transmission device (not shown) is provided to continuously change the driving force from the engine 203, and a steering clutch (not shown) is built in to transmit it to the left and right crawler belt traveling devices 201. The driving force is connected/disconnected.

The harvesting pretreatment device C rakes up the ear tip side of the planted grain stalk by the rotation of the raking drum 205 , and cuts off the root of the grain stalk with the cutter 206 . The harvested straw (harvested straw) is infeed by the infeed auger 207 and collected near the inlet of the feeder 208 . The whole stalk is transported backward by the feeder 208 and sent to the threshing device D.

In addition, the reaping pretreatment apparatus C freely swings up and down around the horizontal axis center (outside the drawing) on the rear end side of the feeder 208 . The feeder 208 swings up and down by a transmission device 218 such as a hydraulic cylinder provided across the vehicle body frame 210 and the lower portion of the feeder 208 . By setting the swing amount by the operation of the transmission device 218, the harvesting height of the grain stalks can be adjusted.

The raking drum 205 disposed above the front end side of the feeder 208 swings up and down around a swing fulcrum 205B on the rear end side, whereby the height position relative to the feeder 208 can be changed. By changing the relative height of the raking drum 205 with respect to the feeder 208 in this way, it is possible to change the raking height of the crops to be harvested, such as planted grain stalks, without changing the harvesting height. The change of the height position of the raking drum 205 is performed by telescopic operation of the drum elevating device 205A constituted by a hydraulic cylinder interposed between the upper part of the feeder 208 .

The raising/lowering operation of the spool raising/lowering device 205A is performed by a command from an operation input unit 290 , which will be described later, provided on the grip unit 213 a of the operating lever 213 .

The threshing device D includes: an axial-flow type threshing cylinder (not shown), which is driven to rotate around an axis along the front-back direction of the self-propelled body A, so as to thresh the harvested grain stalks supplied to the threshing chamber; And a sorting processing apparatus (not shown) sorts a grain from the processed material obtained by the threshing process.

Among the grains sorted out in this sorting treatment device, the primary product is supplied to the grain tank E through the grain lifting device 209, and the secondary product is returned to the threshing chamber where the threshing cylinder rotates through the secondary returning device 219 (not shown). As shown in the figure), straw chips other than grains are dropped and released from the rear of the sorting device to the rear of the self-propelled body A.

The grain tank E is equipped with the tank main body 220, and stores the grain supplied from the grain lifting device 209. The box main body 220 rotates around the vertical axis Y of the longitudinal posture of the rear position of the self-propelled body A, so as to be in the working posture (the posture shown by the solid line in FIG. It is supported in a manner of freely switching postures between postures), the working posture is a posture stored in the self-propelled body A, and the inspection posture is a posture extended laterally from the self-propelled body A.

The said up-and-down axis Y which is the turning center of this grain tank E coincides with the cylinder axis center of the vertical conveyance cylinder 231 with which the unloader F provided in the rear surface side of the tank main body 220 is equipped.

The unloader F is provided with: a straight tube-shaped vertical conveying cylinder 231, which is vertically arranged upward; and a horizontal conveying cylinder 232, which is at the upper end of the vertical conveying cylinder 231 so as to be able to surround the vertical axis Y together with the vertical conveying cylinder 231. It is equipped to swing left and right, and can swing up and down around the horizontal horizontal axis X. The vertical conveying cylinder 231 and the lateral conveying cylinder 232 are each constituted by a known screw conveying device in which a conveying screw is incorporated.

And, on the rear side of the box main body 220, a discharge cylindrical portion 222 is provided, protruding rearward to support the discharge side end of the bottom screw 221 in the box main body 220, and on the top of the discharge cylindrical portion 222, a The unloader F. That is, the vertical conveying cylinder 231 is vertically provided on the upper part of the discharge cylinder 222 to form an upward vertical conveying path, and the horizontal conveying cylinder 232 connected to the upper end of the vertical conveying cylinder 231 constitutes a horizontal conveying path. .

The vertical conveyance cylinder 231 is connected to the discharge cylinder part 222 so as to be rotatable about the vertical axis Y via the rotation drive mechanism 233 . The rotation drive mechanism 233 is comprised by the gear part not shown provided in the outer periphery of the lower end part of the vertical conveyance cylinder 231, the pinion gear meshed with this gear part, and the electric motor which drives a pinion gear, etc. FIG.

The horizontal conveying cylinder 232 is provided in such a way that it can undulate and swing around the horizontal horizontal axis Y along with the telescopic action of the hydraulic cylinder 234 provided between the horizontal and the upper part of the vertical conveying cylinder 231 .

〔Take the driving department〕

The driver's seat B is provided with a box-shaped hood 211 covering the upper side of the engine 203 , and a driver's seat 202 is provided on the upper surface of the hood 211 . An air intake box 211A is formed on the outer side of the engine hood 211, and an air intake portion 211B is formed on the outer surface side of the air intake box 211A for sucking cooling air and is provided with a dust filter.

A console 212 is erected on the front side of the driver's seat 202, and an operating lever 213 is provided on the upper surface side of the console 212 so as to freely swing back and forth and left and right. The operating parts, and the operating parts for the lifting control of the harvesting pretreatment device C.

As shown in FIGS. 16 and 17 , a side panel 214 is provided on the left side of the driver's seat 202 , and the side panel 214 extends rearward from the left lateral end position of the console 212 . On the upper surface 214A of the front end portion of the side plate 214, a main shift lever 215A and an auxiliary shift lever 215B are provided as shift operating elements 215 for controlling the travel speed of the self-propelled body A. As shown in FIG.

And on the upper surface 214A side of the side plate 214, the threshing clutch lever 216A and the reaping clutch lever 216B are provided in the state lined up on the left and right as the work clutch lever 216 at the rear side position of the speed change operation element 215. The threshing clutch lever 216A and the reaping clutch lever 216B are connected/disconnected to the threshing clutch (not shown) in the threshing device D through the back and forth swing operation of the threshing clutch lever 216A, and the harvesting pre-harvesting operation is controlled by the back and forth swing operation of the threshing clutch lever 216B. The harvesting clutch (not shown) of the processing apparatus C is connected/disconnected.

And the discharge clutch lever 217 is provided in the side plate 214 in the rear side of this threshing clutch lever 216A and the cropping clutch lever 216B. The discharge clutch lever 217 is an operation member for switching on/off operation of the discharge clutch G (refer to FIG. 16 ) between a state in which the discharge of grains can be performed by the unloader F and a state in which the discharge of grains is stopped. , the discharge clutch G communicates/disconnects the driving force from the engine 203 to the bottom screw 221 of the grain tank E.

As shown in FIG. 19 , the operating lever 213 provided on the upper surface side of the console 212 is maintained at a neutral position N in an upright posture in a non-operating state. The operation lever 213 is operable to swing in the left and right directions so as to be operable to the left pivot position L and the right pivot position R with the neutral position N as a reference.

When the operation lever 213 is swung in the left and right directions, the operation arm of the steering control valve V1 (corresponding to the steering drive part. Refer to FIG. 19 ) is pushed and pulled through the operation linkage mechanism H described later. , the steering clutch built in the gearbox 204 is connected/disconnected, thereby realizing the steering (rotation) of the self-propelled body A. Moreover, by operating the operation lever 213 in the front-rear direction, the lifting control valve V2 (corresponding to the lifting drive unit; refer to FIG. 18 ) that controls the actuator 218 is operated, whereby the lifting operation of the reaping pretreatment device C can be realized.

The speed change operation member 215 is operated in the forward and backward direction to change the speed of the continuously variable transmission, thereby realizing the change of the traveling speed. 216 A of threshing clutch levers perform connection/disconnection operation of the threshing clutch which performs connection/disconnection of power to the threshing apparatus D by operation of the front-rear direction. The reaping clutch lever 216B performs connection/disconnection operation of the reaping clutch which performs power connection/disconnection of the reaping preprocessing apparatus C by operation of the front-rear direction.

〔About the operation linkage mechanism〕

In FIGS. 18-24, the operation lever 213 which doubles as the operator which performs the elevation control of the reaping pretreatment apparatus C, and the operator which performs the steering control of the self-propelled body A is shown. Swing operations of the operating lever 213 in the front-back and left-right directions are transmitted to the lift control valve V2 as a lift drive unit and the steering control valve V1 as a steering drive unit via an operation linkage mechanism H configured as follows.

This operation interlocking mechanism H is configured as follows.

The operation lever 213 installed upright on the upper surface side of the console 212 transmits its front-back and left-right swing operations to the lift drive unit and the steering drive unit via the operation linkage mechanism H provided inside the console 212 .

As shown in FIGS. 18 to 24 , the operation interlocking mechanism H includes: a rod support frame 250 fixed inside the console 212 ; and a pivot member 260 supported by the rod support frame 250 . The shaft support member 260 includes: a first shaft portion 261 having a swing axis y1 in one direction and supporting the operation lever 213 in a swingable manner; and a second shaft portion 262 so as to swing around a swing axis x1 in the other direction. The operating lever 213 is supported in a manner.

Among the above-mentioned two swing axes x1, y1, the swing axis y1 along one direction of the left-right direction of the self-propelled body A is the axis of the swing action of the operating lever 213 in the forward and backward direction, and the swing axis along the self-propelled body A The swing axis x1 in the other direction of the front-rear direction of the machine body A is the axis of the swing motion of the control lever 213 in the left-right direction.

〔Rod support frame〕

18 and 19, on the lower side of the upper surface 212a of the console 212, between the front and rear walls of the console 212, a pair of left and right L-shaped mounting brackets 212b, 212b are welded and fixed. And the upper wall part 250U provided in the left and right sides of the rod support frame 250 is bolt-connected to these attachment brackets 212b and 212b, and the rod support frame 250 is fixed to the console 212. As shown in FIG.

The rod support frame 250 includes a rear wall 250B located on the rear side in the front-rear direction, a right side wall 250R located on the right side in the left-right direction, and a left side wall 250L located on the left side in the left-right direction, and is formed in a door shape in plan view. . The right side wall 250R and the left side wall 250L are welded and fixed across the rear wall 250B and the upper wall portion 250U, respectively, to improve the shape retention strength of the rod support frame 250 as a whole. The rod supporting frame 250 is made of a sheet metal material, and the upper wall part 250U and the part constituting the rear wall 250B are made of an integral material, and the upper parts of the left and right sides of the rear wall 250B are bent forward so that the upper wall part 250U faces upward. .

On the right side wall 250R, a cylindrical boss-shaped bearing portion 251 is formed in a state protruding toward the lateral outer side (left side in FIG. 19 ) on the right side of the right side wall 250R, and the bearing portion 251 is connected to the first shaft portion 261. One end side in the direction of the axis of the first axis portion 261 is opposed to pivotally support the axis end of the first axis portion 261 . On the lateral outer side of the right side wall 250R, a fixed locking pin 252 is protrudingly formed in the same manner as the bearing portion 251 . The fixed locking pin 252 is used to engage with the lift neutral return spring 276 when the lift neutral return spring 276 described later is mounted on the bearing portion 251, so that the operation lever 213 operated in the front-rear direction is returned to the neutral position N. Apply force.

Furthermore, a connecting portion 253 for supporting the other end side of the first shaft portion 261 in the axial direction is provided on the left side wall 250L. The connecting portion 253 is welded and fixed with fixing nuts 253a, 253a to the inner end side (the left side of the left wall 250L in FIG. 19 ) of a plurality of connecting circular holes provided penetrating through the left side wall 250L. The coupling member 265 attached to the first shaft portion 261 of the pivot member 260 can be detached from the coupling portion 253 via the coupling bolts 253b, 253b so that The outer side (the right side of the left side wall 250L in FIG. 19 ) is connected in a contact state.

The attachment part 254 is provided in the lower part of 250 L of left side walls, and the potentiometer 280 can be attached in the state located in the lateral outer side of the left side of this left side wall 250L. The attachment portion 254 includes a bolt hole 254a and a pin hole 254b penetrating through the left side wall 250L, and the potentiometer 280 can be connected and fixed via a connection bolt 254c.

The potentiometer 280 attached to the mounting portion 254 is used to detect the amount of swing operation of the operating lever 213 in the forward and backward direction. The potentiometer 280 can be detected by contact with the operating arm 267 attached to the side opposite to the side where the bearing portion 251 is provided in the axial center direction of the first shaft portion 261 on the side of the pivot member 260 . That is, the other end side.

That is, as shown in FIG. 22 and FIG. 23 , it is set in the following state: the detection arm 281 of the potentiometer 280 can rotate around the rotation axis p1, and the detection arm 281 is operated toward One direction in the back-and-forth swing direction of the lever 213 , for example, is biased toward the lowering side.

In this potentiometer 280, the operation arm 267 attached to the first shaft portion 261 abuts against the biased side (the lower side of the detection arm 281) of the detection arm 281, and resists the spring biasing force to swing the detection arm 281 back and forth. The other direction, such as the rising side operation, to detect the amount of operation.

The rear wall 250B of the lever support frame 250 is provided with a restricting portion 255 that restricts the swing range in the front-rear direction, which is the swing range in either the front-rear direction or the left-right direction, of the operation lever 213 within a predetermined range.

The restricting portion 255 is constituted by a substantially rectangular opening formed in the rear wall 250B so as to set the swing range of the operation lever 213 in the front-back direction within a predetermined angular range. That is, as shown in FIG. 21 , it is arranged in a state where it is pivotally supported by the pivot member 260 of the lever support frame 250 and swings around the first shaft portion 261 as the operation lever 213 swings in the front-back direction. A part of the second shaft portion 262 rotating around the axis y1 enters the opening of the restricting portion 255 . Therefore, as indicated by the imaginary line in the same figure, the swing range of the second shaft portion 262 that swings around the swing axis y1 of the first shaft portion 261 is limited by the contact between the second shaft portion 262 and the opening edge of the restricting portion 255. limit.

〔Shaft support member〕

The pivot member 260 includes: a first shaft portion 261 having a swing axis y1 in one of the front-rear direction and the left-right direction of the operation lever 213; The swing axis x1 in the other direction.

The first shaft portion 261 and the second shaft portion 262 are fixed by a common holding frame 263 so as to connect the intermediate portions of the respective shafts in the shaft length direction. The first shaft portion 261 and the second shaft portion 262 are in a state of intersecting each other on the upper side and the lower side. A first shaft portion 261 facing in the left-right direction is fixed to the lower side.

The first shaft portion 261 has, on the right end side thereof, a bearing portion 261 a inserted into and removed from a cylindrical boss-shaped bearing portion 251 provided on the right side wall 250R of the rod support frame 250 . Accordingly, the right end side of the first shaft portion 261 is pivotally supported by the rod support frame 250 so as to be rotatable.

The left end side of the first shaft portion 261 is supported by the connection portion 253 provided on the left side wall 250L of the rod support frame 250 via the connection member 265 sandwiched between the pair of flange portions 261b, 261b. The edge portions 261b, 261b are provided on the first shaft portion 261 near the left end side.

At this time, the connection member 265 is bolt-connected and completely fixed to the connection part 253 as one end part connected to the connection part 253 side among the connection member 265 . In the coupling member 265, as the other end connected to the first shaft portion 261 side, the coupling member 265 and the first shaft portion 261 sandwiched between the pair of flange portions 261b, 261b are relatively free to rotate. The first shaft portion 261 is supported in the state of . Accordingly, the first shaft portion 261 is supported by the connection member 265 in a state where movement in the axial direction, the front-back direction, and the up-down direction is restricted.

On the right end side of the first shaft portion 261 , a first operation plate 264 is attached integrally with the first shaft portion 261 at a portion located on the inner side of the right side wall 250R of the lever support frame 250 . The bearing portion 261 a is integrally provided with the first shaft portion 261 in a state protruding laterally outward from the laterally outward surface of the first operation plate 264 , and the bearing portion 261 a is inserted into the rod support frame. In the state of the bearing portion 251 of the 250, the first operation plate 264 is located on the inner side of the right side wall 250R.

In this way, the cylindrical boss-shaped bearing portion 251 pivotally supporting the shaft end portion of the first shaft portion 261 protrudes laterally outward (left side in FIG. 19 ) of the right side wall 250R, and the first operation plate 264 is located on the right side. On the inner side of the wall 250R, the connecting member 265 can be connected in a state of being in contact with the left lateral outer side of the left side wall 250L (in FIG. 19 , the right side of the left side wall 250L). Therefore, the pivot member 260 abuts against the rod support frame 250 from the left side, and the connection member 265 and the connection part 253 are bolt-connected using the connection bolts 253b and 253b, thereby enabling easy assembly.

As shown in FIGS. 18 to 20 , the first operation plate 264 extends downward longer than the right side wall 250R. In addition, at the lower part of the first operation plate 264 that extends further downward, there is an upright panel that protrudes from the first operation plate 264 to the laterally outer side of the right side wall 250R beyond the lower end edge of the right side wall 250R. Move the locking pin 264a. As shown in FIGS. 18 to 20 , the movable locking pin 264 a is set in such a way that it is locked with the lifting neutral return spring 276 when the lifting neutral return spring 276 is installed on the bearing portion 251 .

Therefore, the fixed lock pin 252 protrudingly formed on the lateral outer side of the right side wall 250R of the lever support frame 250 and the movable latch protruding laterally outward from the first operation plate 264 of the first shaft portion 261 The fixed pin 264a is locked to the lifting neutral return spring 276 installed on the bearing portion 251 .

As shown by the imaginary line in Fig. 20, when the operating lever 213 is operated by swinging forward and backward in this state, along with the swinging of the first operating plate 264, the movable locking pin 264a makes one end of the lifting neutral return spring 276 Move sideways away from the fixed locking pin 252 . At this time, the other end side of the lifting neutral return spring 276 is locked to the fixed locking pin 252 and does not move. The biasing force of the return spring 276 acts on the operation lever 213 . Thereby, when the hand is released, the operation lever 213 returns to the neutral position.

As shown in FIG. 21 , the limit of the swing operation range of the operation lever 213 in the forward and backward direction at this time passes through the restriction portion 255 formed on the rod support frame 250 and the second shaft portion inserted into the restriction portion 255 . 262 for abutment. The limit of the swing operation range formed by the abutment of the restricting portion 255 and the second shaft portion 262 is set to a predetermined range on both sides of the operation direction of the operation lever 213 .

In addition, the control lever 213 and its swing axis y1 in the front-rear direction, that is, the first shaft portion 261 are arranged so that the shaft portion of the control lever 213 in the neutral posture exists on a vertical line passing through the swing axis y1. .

As shown in FIG. 19 and FIGS. 22 to 24 , on the left end side of the first shaft portion 261 , it is closer to the left end than the portion where the connecting member 265 sandwiched by the pair of flange portions 261b, 261b exists. The second operation panel 266 is installed at the position on the side. Furthermore, an operation arm 267 for operating the detection arm 281 of the potentiometer 280 is attached to the second operation plate 266 . The second operation plate 266 is attached to the first shaft portion 261 in a downwardly inclined posture when the shaft of the operation lever 213 is in an upright posture in the vertical direction at the neutral position.

As shown in FIG. 18 , FIG. 22 , and FIG. 23 , potentiometer 280 provided in rod support frame 250 is attached to the lower portion of left side wall 250L rearward from first shaft portion 261 . An operation arm 267 for operating the detection arm 281 of the potentiometer 280 is attached to the lower second operation plate 266 in the vicinity of the swing axis y1 of the first shaft portion 261 . Furthermore, the potentiometer 280 is arranged such that the rotation axis p1 of the detection arm 281 assumes a forwardly upwardly inclined posture in which the front side is closer to the first shaft portion 261 than the rear side. The operation arm 267 is disposed in a downwardly inclined posture so as to be closer to the first shaft portion 261 on the front side and to be positioned lower as it goes to the rear side. In addition, the operation arm 267 has a center line p2 whose angle with respect to the horizontal is steeper than the rotation axis p1 of the detection arm 281 (see FIG. 22 ).

In this way, it is easier to operate the operation arm 267 than when the rotation axis p1 of the detection arm 281 of the potentiometer 280 is in the horizontal direction or in the vertical direction.

A cutout portion 266 a is formed at a lower end portion of the second operating plate 266 for holding an operating cable 282 configured to link the steering valve V1 as a steering drive unit with the operating lever 213 . The operation cable 282 is composed of a push-pull wire through which the inner wire part is relatively slidably inserted inside the outer wire part. The embraced state is maintained at the notch 266a.

In this manner, the middle portion of the operation cable 282 is supported by the second operation plate 266 , whereby the operation of the operation cable 282 can be easily and smoothly performed by the output operation body 271 .

At an intermediate position between the first operation plate 264 and the connection member 265 of the first shaft portion 261, left and right side pieces of a groove-shaped holding frame 263 that is open to the front side in plan view are integrally welded and fixed. In addition, a second shaft portion 262 whose axis is in the front-rear direction so as to intersect with the first shaft portion 261 is provided in a state of penetrating the holding frame 263 front and rear on the upper portion of the first shaft portion 261 . That is, the upper and lower first shaft portions 261 and the second shaft portion 262 are integrated in a posture perpendicular to each other via the holding frame 263 .

In the second shaft portion 262 , the pivot portion 262A on which the operating lever 213 is pivotally supported is located on the front side of the holding frame 263 , and the extension shaft portion 262B is located on the rear side of the holding frame 263 .

And, this rearward extension shaft portion 262B is engaged with a restricting portion 255 formed on the rod support frame 250 . In addition, a steering neutral return spring 275 is wound around the extension shaft portion 262B. At both ends of the steering neutral return spring 275, a neutral restriction pin 263A protruding rearward from the holding frame 263 and a slave operation bracket 270 of the operation shaft 272 included in the operation bracket 270 described later are locked. The operating shaft 272 protrudes toward the rear.

As shown in FIGS. 21 and 24 , the front pivot portion 262A is fitted with a boss portion 270A of a rectangular plate-shaped operating bracket 270 integrally formed with the operating lever 213 on the side close to the holding frame 263 . And, on the side away from the holding frame body 263, the boss portion 271A (corresponding to the cylindrical shaft portion) of the rectangular plate-shaped output operation body 271 located on the front side of the operation bracket 270 is fitted on the second shaft portion 262, and these operations The bracket 270 and the output operation body 271 are relatively rotatably supported about the swing axis x1 which is the axis of the second shaft portion 262 .

In the operation bracket 270 integrated with the operation rod 213, in the state of penetrating the operation bracket 270 front and rear, an operation shaft 272 is integrally welded so that it is located on the lower side of the first shaft part 261, and has the function of making it along with the second shaft. The swing axis x1 of the shaft portion 262 is parallel to the axis x2 in the front-rear direction.

The operation shaft 272 includes: an operation shaft 272 (corresponding to a locking body) protruding forward from the operation bracket 270 ;

A part of the operation shaft 272 protruding forward is inserted into an operation opening 271C of the output operation body 271 described later, and a part of the operation shaft 272 protruding rearward is inserted into a restriction opening 263B formed in the holding frame 263 to be described later.

The output operation body 271 includes a boss portion 271A fitted on the second shaft portion 262, and a plate-shaped swing plate portion 271B integrally attached to the boss portion 271A. The operation opening 271C into which the operation shaft 272 is inserted. In addition, a locking pin 273 (corresponding to a spring locking portion) is provided in a lower portion of the swing plate portion 271B so as to be located on the lower side of the operation opening 271C. The axis x3 of the locking pin 273 faces in the direction along the front-rear direction similarly to the second shaft portion 262 and the operation shaft 272 , and the locking pin 273 is welded and fixed to the front and rear sides of the output operation body 271 in a state protruding to the front and rear sides of the output operation body 271 . The swing plate portion 271B.

In addition, a coil spring 274 as an elastic body is wound around the boss portion 271A on the front side of the swing plate portion 271B, and each end portion on both end sides of the coil spring 274 is attached so as to be distributed in the insertion operation opening. The portion of the operation shaft 272 facing forward of 271C and the left and right sides of the locking pin 273 .

As shown in FIGS. 19 , 21 , and 24 , an operation cable 282 is detachably connected to the locking pin 273 protruding toward the rear side of the swing plate portion 271B. As shown in FIG. 19, the operation cable 282 is interlocked with the steering control valve V1, and is interlocked with the swing operation of the operating lever 213 around the left-right direction, that is, the swing axis x1 of the second shaft portion 262, and controls the steering as the steering drive part. The control valve V1 performs a switching operation to connect/disconnect a steering clutch of a traveling device (not shown) on the left and right, respectively, and performs a turning operation of the body.

In this way, the steering unit U1 is constituted by the operation cable 282 , the second shaft portion 262 , the output operation body 271 , etc., wherein the operation cable 282 is provided so as to link the steering control valve V1 and the operation lever 213 as a steering drive unit. In the operation linkage mechanism H, the second shaft portion 262 and the output operating body 271 transmit the swing operation of the operating lever 213 in the left and right direction, that is, around the swing axis x1 of the second shaft portion 262 , to the operation cable 282 .

In addition, as shown in FIG. 18 , the swing operation of the operation lever 213 around the front-rear direction, that is, the swing axis y1 of the first shaft portion 261 is detected by the potentiometer 280 . And the detection result of the potentiometer 280 is transmitted to the control device 283 constituted by the microcomputer, and the control device 283 operates the electric motor 284, thereby actuating the lift control valve V2 as the lift driving part, so that the transmission device for lifting 218 supply and discharge pressure oil, make the transmission device 218 telescoping action that lifting is used, thereby carry out the lifting action of reaping pretreatment device C.

In this way, through the structure in which the lift control valve V2 as the lift drive unit is linked with the control lever 213, in the operation linkage mechanism H, the swing of the control lever 213 around the front-back direction, that is, the swing axis y1 of the first shaft portion 261 The operating arm 267 (corresponding to an output operating body) that transmits the operation to the potentiometer 280, the potentiometer 280, the control device 283, the electric motor 284, and the like constitute the lifting unit U2.

In this elevating unit U2, the flexible linkage mechanism I described later is not equipped.

〔Flexible linkage mechanism〕

Between the operating lever 213 and the output operating body 271 in the steering unit U1, a flexible linkage mechanism 1 is provided so that the output operating body 271 moves integrally following the swinging action of the operating lever 213, and the output operating body 271 This is a state in which the control lever 213 does not integrally follow the control lever 213 but allows the swing movement of the control lever 213 alone.

This flexible linkage mechanism 1 is constituted in the following manner.

That is, the flexible interlocking mechanism 1 is constituted by the coil spring 274 wound around the output operation opening 271C and the diameter difference between the inner diameter of the operating opening 271C and the outer diameter of the operating shaft 272. The boss portion 271A on the front side of the swing plate portion 271B of the body 271, and the operation opening 271C are formed in the swing plate portion 271B.

As shown in (a) of FIG. 25 , when the operating lever 213 is in the neutral position, the swing axis x1 of the operating lever 213 around the second shaft portion 262 , the axis x2 of the operating shaft 272 , and the locking pin 273 The axis x3 of the control lever 213 is arranged so as to be aligned on the straight line L1 along the shaft direction of the control lever 213 .

That is to say, the line segment L2 connecting the swing axis x1 and the axis x2 of the operating shaft 272 located on the shaft of the operating lever 213, and the line segment L3 connecting the swing axis x1 and the axis x3 of the locking pin 273 are in the same position as the operating lever. A state in which the vertical line L1 of the swing axis x1 of 213 coincides.

At this time, both ends of the coil spring 274 wound around the boss portion 271A are sandwiched between the operation shaft 272 and the locking pin 273 protruding to the front side of the output operation body 271 , and the operation shaft 272 is positioned on the side of the output operation body 271 . The central portion of the operation opening 271C.

In addition, although not described in FIG. 25 , as shown in FIGS. 21 and 23 , a steering neutral return spring 275 is wound around the extension shaft portion 262B of the second shaft portion 262 , and both ends of the steering neutral return spring 275 The neutral control pin 263A protruding rearward from the holding frame 263 and the operation shaft 272 are arranged between the two sides.

As shown in (b) of Figure 25, when the operating lever 213 is oscillated to the left (or right) by a predetermined angle, the operating shaft 272 oscillates clockwise around the oscillating axis x1 of the second shaft portion 262, Along with this, the locking pin 273 is also operated to swing in the same direction via the coil spring 274 . The operation cable 282 is pulled according to the swing of the locking pin 273, and the steering valve V1 is switched to the left turning side (see FIG. 19 ). In this state, with respect to the vertical line L1 passing through the swing axis x1 of the operating lever 213, the line segment L2 connecting the swing axis x1 and the axis x2 of the operation shaft 272 and the axis connecting the swing axis x1 and the locking pin 273 The line segment L3 of the heart x3 is oscillated by the same angle.

At this time, although it is not described in FIG. 25 , one end side of the steering neutral return spring 275 is engaged with the neutral restriction pin 263A, and the other end side is engaged with the operation shaft 272 , so that the distance between the neutral restriction pin 263A and the operation shaft 272 passes. The swing of the operation shaft 272 elastically expands around the swing axis x1. As a result, the steering neutral return spring 275 is in a state where the operation lever 213 is biased back to the neutral side. However, the coil spring 274 swings around the swing axis x1 while holding the operation shaft 272 and the locking pin 273 , so the coil spring 274 in this state does not act as a swing resistance of the operation lever 213 .

When the operation cable 282 connected to the locking pin 273 is stretched and the steering valve V1 reaches the left rotation position L (stroke end position in the figure), the steering clutch (not shown) is switched by the steering valve V1. The oil circuit is switched to the state of left rotation, and the self-propelled body A performs left rotation. When turning the self-propelled body A to the right, the operation lever 213 is swung to the right by a predetermined angle. As a result, the locking pin 273 swings counterclockwise, the steering valve V1 pushed by the operation cable 282 made of a push-pull wire is switched to the right-turn position R, and the self-propelled body A turns right.

(c) of FIG. 25 shows a state in which the steering control valve V1 stretched by the operation cable 282 connected to the locking pin 273 reaches the left rotation position L, and the operation lever 213 is moved to the left (right in FIG. 25 ). side) swing operation, the operating shaft 272 swings clockwise around the swing axis x1 of the second shaft portion 262 in the figure, and abuts against the opening end edge of the limiting opening 263B formed in the holding frame 263, so that a larger limit can be limited. swing. In this state, with respect to the vertical line L1 passing through the swing axis x1 of the operating lever 213, the line segment L3 connecting the swing axis x1 and the axis x3 of the locking pin 273 is more connected to the swing axis x1 and the operation axis. The line segment L2 of the axis x2 of 272 is oscillated to be larger.

This is a state in which the operation lever 213 is further swung to the left from the state shown in FIG. 25( b ). In this state, the operation shaft 272 swings clockwise around the swing axis x1 of the second shaft portion 262 and abuts against the opening edge of the limiting opening 263B. The locking pin 273 connected to the control valve V1 maintains the original state shown in (b) of FIG. 25 .

Therefore, even if, for example, the position of the stroke end of the steering valve V1 does not coincide with the swing operation limit position of the control lever 213 due to the amount of swing operation of the control lever 213 being set by the lever guide groove, etc., the control lever 213 exceeds the stroke of the steering control valve V1. The operation force of the operation lever 213 is not transmitted to the steering control valve V1, so that it can be used conveniently.

In this overrun state, the distance between the operation shaft 272 and the locking pin 273 expands around the swing axis x1 against the elastic biasing force of the coil spring 274 . Therefore, in addition to the urging force of the steering neutral return spring 275 urging the operation lever 213 back to the neutral side, the elastic urging force of the coil spring 274 also acts as an operation resistance to the swing operation of the operation lever 213 . This is also advantageous in that it is easy to recognize that unnecessary operation of the operation lever 213 has been performed.

(d) of FIG. 25 shows a state in which even if the operation lever 213 is operated to a certain degree to the left from the state shown in (a) of FIG. The elastic biasing force of the coil spring 274 moves the locking pin 273 . At this time, with respect to the vertical line L1 passing through the swing axis x1 of the operating lever 213, the line segment L2 connecting the swing axis x1 and the axis x2 of the operation shaft 272 is oscillated at a predetermined angle, but connects the swing axis x1 and the locked position. The line segment L3 of the axis x3 of the pin 273 maintains a position coincident with the vertical line L1.

In this state, the urging force of the steering neutral return spring 275 and the elastic urging force of the coil spring 274 urging the operation lever 213 back toward the neutral side act as operational resistance to the swing operation of the operation lever 213 . Among them, the elastic biasing force of the coil spring 274 acts on the locking pin 273 , and acts in the direction of switching the steering valve V1 to the left turning side via the operation cable 282 . However, when the operating resistance of the steering control valve V1 is greater than the elastic biasing force of the coil spring 274, even if the operating lever 213 is swung to the left by a degree, the operating shaft 272 is within the range of the operating opening 271C of the output operating body 271. Swinging also shows a state where the locking pin 273 does not follow its movement.

In the configuration of the present invention, the operation shaft 272 is inserted into the operation opening 271C formed in the output operation body 271. Therefore, even in such a case, the operation shaft 272 can be brought into contact with the inside of the operation opening 271C. The state of the periphery forcibly operates the operating lever 213 to swing about the swing axis x1. As a result, the artificial operating force on the operating lever 213 is directly transmitted to the locking pin 273 via the operating shaft 272 and the output operating body 271. As shown in (c) of FIG. 25 , the locking pin 273 can be operated until turning. The control valve V1 reaches the end-of-stroke position.

In addition, the operation shaft 272 is inserted into the operation opening 271C formed in the output operation body 271 in this way, and since the operation force of the operation lever 213 can be directly applied to the output operation body 271 from the operation shaft 272 , the following usage is also possible. For example, when the output operation body 271 is difficult to move due to the strong adhesion of soil to the steering control valve V1, etc., the output operation body 271 is made to steer by impacting the operation shaft 272 against the inner peripheral edge of the operation opening 271C. The control valve V1 imparts an aggressive operating force, so that the steering control valve V1 can also be easily operated.

The limiting opening 263B formed in the holding frame 263 so as to set the limit of the swing operation range of the operating lever 213 by abutting against the rear end side of the operating shaft 272 is formed as follows.

That is, among the inner peripheral edges of the opening 263B for regulation, the inner peripheral edges on the left and right sides of the position opposed to the moving direction of the operation shaft 272 are formed so as to be oscillating about the operation lever 213 which is also the center of oscillation of the operation shaft 272 . The circular arc of the axis x1 is perpendicular or substantially perpendicular, and the operation shaft 272 abuts on the inner peripheral edges of the left and right sides.

In addition, the positions of the inner peripheral edges of the left and right sides of the restriction opening 263B are such that the operation shaft 272 can move the locking pin 273 formed on the output operation body 271 through the operation opening 271C, so that the steering valve V1 can be operated to end of stroke.

In addition, the limiting opening 263B sets the limit of the swing operation range of the operating lever 213 by abutting against the moving direction of the operating shaft 272 , but does not abut the operating shaft 272 on an upper or lower inner peripheral edge that is only slightly inclined. Instead, the left and right inner peripheral edges that are in contact with each other in a state of facing each other with respect to the moving direction of the operation shaft 272 are brought into contact. Therefore, it is advantageous in that it is easy to set the limit of the swing operation range of the control lever 213 with high precision.

〔Operation input part〕

As shown in FIG. 26 , an operation input unit 290 is provided on an upper surface portion of the grip portion 213 a of the operation lever 213 . The operation input part 290 is used to send a height adjustment signal to the control device 283 to the drum lifting device 205A, and the drum lifting device 205A is used to adjust the raking height of the raking drum 205 provided on the upper part of the feeder 208. Make a height change.

The operation input unit 290 is provided with an up button 291 for inputting an up command to the spool lifting device 205A, and a down button 292 for inputting a down command, and these buttons 291, 292 are provided on a grip portion that can be gripped by the operation lever 213 The finger of the hand of 213a operates the pressed position.

In the control device 283, although not shown in the figure, as long as the control valve provided in the supply and discharge path of the pressure oil of the spool lifting device 205A can be operated and the buttons 291 and 292 are pressed, the Supply and discharge the pressure oil to the drum lifting device 205A.

[Other embodiments of the second embodiment]

[Other embodiment 1]

In the said embodiment, although the harvester of the structure which provided the operation input part 290 in the upper surface part of the grip part 213a of the operation lever 213 was shown, it is not limited to this structure. For example, as shown in FIG. 27 , it is also possible to adopt the following structure: in the vicinity of the grip portion 213a of the operating lever 213, and at a position corresponding to the lateral side of the grip portion 213a, a switch operating lever capable of switching between two positions is provided. 293. This switch operating lever 293 is configured, for example, in such a way that when it is turned forward, it inputs a lowering command to the reel elevating device 205A, and when it is reversing backward, it inputs an ascending command, so that the elevating and descending control of the reel elevating device 205A can be performed. .

In addition, the reel lifting device 205A is not limited to a structure using a hydraulic cylinder, and a reel elevating device of any structure such as an electric cylinder may be used.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 2]

In the said embodiment, although the harvester of the structure which provided the operation input part 290 in the grip part 213a vicinity of the operation lever 213 was shown, it is not limited to this structure. For example, although not shown in the figure, it is possible to adopt a structure in which a button-type up button 291 and a down button 292 are provided on the upper surface of the grip portion of the main shift lever 215A, or a switchable button is provided on the lateral side of the grip portion. Two position switch lever 293.

In addition, the operation input part 290 may be provided in the operation panel part etc. in front of the driver's seat 202 or the lateral side, instead of the lever part of the operation lever 213, the main shift lever 215A, etc.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 3]

In the above-mentioned embodiment, the harvester of the structure which performs the lifting operation of the harvesting pretreatment apparatus C by the operation of the operation lever 213 in the front-back direction, and performs the steering operation of the self-propelled body A by the operation of the operation lever 213 in the left-right direction is shown. , but not limited to this.

For example, even if it is a harvester with a structure in which the harvesting pretreatment device C is raised and lowered by operation of the operation lever 213 in the left and right direction, and the self-propelled body A is turned by operation of the operation lever 213 in the front and rear directions.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 4]

In the above-mentioned embodiment, it was exemplified that in the case where the locking pin 273 cannot be moved by the elastic biasing force of the coil spring 274 due to mud adhering to the steering control valve V1, etc. In the state where the inner peripheral edge of the operation opening 271C of 271 is abutted against, the operation lever 213 is forcibly operated to swing around the swing axis x1, so that the locking pin 273 can be operated until the steering control valve V1 reaches the stroke end position. harvesters, but not limited to them.

For example, the configurations shown in (a) to (d) of FIG. 28 may be employed.

In this structure, as shown in FIG. 28(b) and FIG. 28(c), the diameter difference between the inner diameter of the operation opening 271C formed in the swing plate portion 271B and the outer diameter of the operation shaft 272 is formed slightly larger than the above-mentioned difference. Diameter difference of the structure shown in Fig. 25.

Therefore, as shown in (b) of FIG. 28 , after the control lever 213 is swung leftward (or rightward) by a predetermined angle to make the steering control valve V1 reach the left turn position L (stroke end position in the figure), When the operation lever 213 is further operated in the same direction, as shown in (c) of FIG. 28 , even if the operation shaft 272 swings clockwise around the swing axis x1 of the second shaft portion 262 and aligns with the opening of the limiting opening 263B, The end edge is in contact with the inner edge of the operation opening 271C.

Therefore, there is an advantage that the position where the steering valve V1 reaches the stroke end does not need to be aligned with the position where the operation shaft 272 abuts on the operation opening 271C, and high-precision machining is not required.

In addition, as shown in (d) of FIG. 28 , when the locking pin 273 cannot be moved by the elastic biasing force of the coil spring 274 due to mud adhering to the steering control valve V1, etc., the operating shaft 272 can be brought into contact with the steering valve V1. The state of the inner peripheral edge of the operation opening 271C compulsorily operates the operation lever 213 to swing around the swing axis x1.

However, in this structure, the difference between the inner diameter of the operating opening 271C and the outer diameter of the operating shaft 272 is large, so even if the operating lever 213 is swung clockwise as shown in the figure and is operated to abut against the opening edge of the limiting opening 263B, The position also becomes the state shown by the dotted line in (c) of FIG. 28 . That is, the operation opening 271C is located at the position indicated by reference numeral 271C', the locking pin 273 is located at the position indicated by reference numeral 273', and the steering control valve V1 cannot be forcibly operated to a position completely reaching the stroke end.

In this way, when the resistance is high due to adhesion of mud or the like, the steering control valve V1 cannot be forcibly operated to the stroke end position, but can be moved to near the stroke end. In addition, in general, when resistance is generated due to adhesion of mud, etc., there is a tendency that when it is forced to move to a certain extent, the resistance due to adhesion of mud disappears halfway, and the operation can be performed without hindrance. to the end of the stroke.

It should be noted that, as described above, instead of increasing the inner diameter of the operation opening 271C formed in the swing plate portion 271B and the outer diameter of the operation shaft 272, the distance between the left and right opening edges of the restriction opening 263B may be changed. The structure of the diameter difference.

In other words, it is also conceivable to reduce the distance between the left and right opening edges of the limiting opening 263B so that even if the operation shaft 272 swings clockwise around the swing axis x1 of the second shaft portion 262 as shown in FIG. The opening edge of the regulation opening 263B is in contact with the opening edge, and the operation shaft 272 is not in contact with the inner edge of the operation opening 271C. Accordingly, the same effect as that of the configuration in which the difference between the inner diameter of the operation opening 271C formed in the swing plate portion 271B and the outer diameter of the operation shaft 272 is slightly larger than that of the configuration shown in FIG. 25 can be obtained.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 5]

In the said embodiment, although the harvester of the structure which integrated the flexible interlock mechanism I was shown in the steering unit U1 which performs the steering control of the operation lever 213 to the left-right direction, it is not limited to this structure.

For example, it may also be a harvester in which a flexible interlock mechanism 1 is assembled in the lifting unit U2 that performs lifting control in the front-back direction of the operating rod 213, or a flexible interlock mechanism 1 is assembled in both the steering unit U1 and the lifting unit U2. structure of harvester.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 6]

In the above-mentioned embodiment, as the flexible interlocking mechanism I, the flexibility of the structure in which an operation opening 271C having a diameter larger than the operation shaft 272 is formed on the output operation body 271, and a coil spring 274 and a steering neutral return spring 275 are used is exemplified. Linkage I, but not limited to this structure.

For example, the gap formed by the diameter difference between the operation shaft 272 and the operation opening 271C may be provided at the connecting portion between the locking pin 273 and the operation cable 282 or other positions, or the gap formed by such a diameter difference may not be used, and the gap formed by the diameter difference may be used instead. The coil spring 274, which is an elastic body, and the elastic force of the steering neutral return spring 275 form a flexible structure.

In addition, the elastic body is not limited to a coil spring, and may be an elastic body having a structure using elastic materials such as leaf springs and rubber.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 7]

In the above-mentioned embodiment, the harvester with the structure in which the flexible interlocking mechanism I is assembled in the steering unit U1 that performs the steering control of the operation lever 213 in the left and right direction is shown as an example, but even if it does not have such a flexible interlocking mechanism I The structure of the harvester doesn't hurt either.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 8]

In the above-mentioned embodiment, the harvester of the structure which transmits the operation of the operation lever 213 forward-backward or left-right direction to the steering control valve V1 or the lift control valve V2, and uses hydraulic pressure to control is shown, but it is not limited to the structure.

For example, although not shown in the figure, the following structure can also be adopted: a steering clutch for steering operation and a lifting clutch for lifting operation are provided, and the operation linkage mechanism H of the steering clutch, lifting action clutch and operating lever 213 is connected through the operation cable 282. Directly connected, switching operation is performed by man-made operating force for operating the operating lever 213 .

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 9]

In the above-mentioned embodiment, the locking pin 273 also serves as the connecting portion of the operation cable 282 to the output operation body 271 , but the present invention is not limited thereto.

For example, the operation cable 282 may be connected by providing an engaging portion such as a connecting pin or a hole at a portion independent of the locking pin 273 . In addition, the connecting portion of the operation cable 282 may be provided on the opposite side to the side where the locking pin 273 is located, but not limited thereto, and the connecting portion may be provided on the same side as the locking pin 273 .

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 10]

In the above-mentioned embodiment, a structure is adopted in which the operation shaft 272 is provided in a state of penetrating the operation bracket 270 front and back, thereby also serving as a locking body for inserting and outputting the operation opening 271C of the operation body 271, and a structure for inserting and forming in the holding frame. 263 is a protruding member for restricting the opening 263B, but is not limited to this structure.

For example, the locking body inserted into the operating opening 271C of the output operating body 271 and the protruding member inserted into the opening 263B for restricting the insertion may be formed by separate members and provided at separate locations. In this case, the positions of the opening 271C for operation and the opening 263B for restriction may be provided at independent positions according to the positions of the locking body and the protruding member.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 11]

In the said embodiment, although the harvester with the structure provided with the opening formed in the rod support frame 250 was shown as the restricting part 255, it is not limited to this.

For example, although not shown, stoppers may be provided at positions separated into upper and lower positions on the side of the rod support frame 250 to limit the swing range of the second shaft portion 262 . Conversely, a rod-shaped member protrudes from the rod support frame 250 side, and a member having an opening through which the rod-shaped member can be inserted is attached to the second shaft portion 262 side to limit the vertical swing range of the second shaft portion 262 .

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 12]

In the above-mentioned embodiment, it was shown that the first shaft portion 261 and the second shaft portion 262 are provided on the shaft support member 260 side, and the first shaft portion 261 and the second shaft portion 262 are provided on the rod support frame 250 side and the operation lever 213 side. Although the harvester of the structure of the bearing part 251 supported by the 2nd shaft part 262, and boss part 270A is not limited to this structure.

For example, although not shown in the figure, it is also possible to provide a shaft portion on the rod support frame 250 side, to provide a cylinder boss fitted on the shaft portion on the shaft support member 260 side, or to provide a pivot shaft on the operation lever 213 side, Appropriate structures such as cylinder bosses are provided on the pivot member 260 side.

Other structures may be the same as those of the above-mentioned embodiment.

[Other embodiment 13]

In the above-mentioned embodiment, the harvester of the structure which transmits the swing motion of the control lever to the output operation body 271 via the flexible linkage mechanism 1 was shown as an example, but it is not limited to this. For example, although not shown, the flexible interlock mechanism I may be properly interposed in the middle of the operation system for transmitting the swing operation of the output operation body 271 to the steering control valve V1 or the lift control valve V2.

According to this structure, when the operation resistance acting on the output operation body 271 exceeds a predetermined range, the steering control valve V1 or the lift control valve V2 does not follow the output operation body 271 integrally, and the control lever 213 and The state of the swing operation of the operation body 271 independently of the steering control valve V1 or the lift control valve V2 is output.

Other structures may be the same as those of the above-mentioned embodiment.

Industrial availability

The present invention is not limited to ordinary combine harvesters, and can be applied to semi-feed combine harvesters, bean harvesters such as soybeans, corn harvesters, and the like.

Explanation of reference signs

(first embodiment)

13: operating rod; 13B: locking operating body; 50: rod support frame; 51: bearing part; 53, 54: abutting part; 55: first restricting part; 53: connecting part; Shaft support member; 60A: first rotating part; 60B: second rotating part; 61: shaft part; 65: second restricting part; 65a: abutting part; 70: operating bracket; hook part); 71: output operating body; 71A: cylinder shaft part; 71B: swing plate part; 73: spring locking part; 74: elastic body (coil spring); 82: operation cable; H: operation linkage mechanism; I : flexible linkage mechanism; U1: steering unit; U2: lifting unit; V1: steering drive unit; V2: lift drive unit; x1: swing axis in one direction; y1: swing axis in the other direction.

(second embodiment)

205: drum for raking; 205A: drum lifting device; 213: operating rod; 213a: gripping part; 250: rod support frame; 260: shaft support member; 261: first shaft part; 262: pivot shaft (second shaft); 263: holding frame; 270: operating bracket; 271: output operating body; 271A: cylinder shaft; 271B: swing plate part; 271C: opening for operation; shaft); 272: protruding member (operation shaft); 273: spring locking part; 274: elastic body; 282: operation cable; 290: operation input part; C: harvesting part; H: operation linkage mechanism; I: flexible linkage Mechanism; U1: Steering unit; U2: Lifting unit; V1: Steering drive unit; V2: Lifting drive unit; x1: Swing axis.

Claims (34)

1. A harvester, characterized in that, possesses: The operating lever can be operated by swinging in the forward and backward direction and in the left and right direction; The steering drive part can turn to the left and right to operate the forward direction of the traveling body; a lifting drive unit capable of driving the lifting operation harvesting unit relative to the traveling body; and operating the linkage mechanism to transmit the swing operation of the operating lever to the steering drive part and the lifting drive part, The operation linkage mechanism has: a steering unit that links the operating lever with the steering drive; and a lifting unit, which links the operating rod with the lifting driving part, In the steering unit and the lifting unit, an output operating body that transmits the swinging motion of the operating lever to the steering driving part or the lifting driving part is provided, In the steering unit and/or the lifting unit, when the steering driving part or the lifting driving part moves within a preset movable range, the output operating body follows the swing of the operating lever movement integrally, and after the steering drive unit or the lift drive unit reaches the limit of the movable range, when the steering drive unit or the lift drive unit is moved away from the movable range When the operating lever is operated in the direction of lateral movement, the output operating body no longer integrally follows the operating lever, allowing the operating lever to perform a swinging motion independently. 2. The harvester according to claim 1, characterized in that, In the steering unit and/or the lifting unit, a flexible linkage mechanism is provided between the operating rod and the output operating body, through which the output operating body follows the operation A state in which the lever moves integrally with the swinging action, and a state in which the output operating body does not integrally follow the operating lever but allows the operating lever to independently perform the swinging action. 3. The harvester of claim 2, wherein: The flexible interlock mechanism includes an elastic body that transmits the swing motion of the operating lever to the output operating body. 4. The harvester of claim 3, wherein: The elastic body can allow the operating lever to move in the same direction when the steering unit operates the steering driving part to the limit of motion, or when the lifting unit operates the lifting drive part to the limit of motion. The steering drive part or the lift drive part is elastically deformed in a direction in which the steering drive part or the lifting drive part is operated to the direction of the movement limit and swings independently. 5. The harvester according to claim 3 or 4, characterized in that, In the steering unit and/or the lifting unit, the output operating body is arranged to freely swing around the same axis as the swing axis of the operating lever, An operation bracket provided to swing integrally with the operation lever, and the output operation body that swings around the same axis as the operation bracket are connected via the elastic body. 6. The harvester of claim 5, wherein: a shaft support member that supports the operation lever in a swingable manner is provided, The shaft supporting member supports the output operation body so as to relatively freely swing about the same axis as the swing axis of the operation lever, The operating bracket is provided in a manner to swing integrally with the shaft supporting member, The elastic body is provided to straddle the locking body provided on the operation bracket and the output operation body. 7. The harvester of claim 6, wherein: In the steering unit and/or the lifting unit, the output operating body includes: a cylindrical shaft portion fitted externally on a pivot shaft supporting the operating lever; and a plate-shaped swing plate portion integrally attached to the the barrel shaft, A spring locking part is provided on the swing plate part, A coil spring as the elastic body is wound around the outer peripheral side of the cylindrical shaft portion, and each end portion of the coil spring on both end sides is arranged between the locking body and the spring locking portion. Swing both sides in the direction of movement. 8. The harvester of claim 7, wherein: An operation cable that transmits an operation force to the steering drive unit or the lift drive unit is connected to the side of the swing plate portion opposite to the side where the spring locking portion is provided. 9. The harvester according to any one of claims 6 to 8, wherein: A rod support frame is attached to the fixed part of the body, and the shaft support member is centered around a swing axis in one of the front-rear direction and the left-right direction of the operation rod, or in one of the front-rear direction and the left-right direction of the operation rod. Any one of the swing axes in the other direction is supported by the rod support frame in a swinging manner, The lever support frame is provided with a first restricting portion that restricts a permissible swing range of the operation lever around one of the swing axes within a predetermined angular range. 10. The harvester of claim 9, wherein: The first restricting portion is constituted by an abutting portion that abuts against the control lever or a member that swings integrally with the control lever, and limits the swing movement range of the control lever. 11. A harvester according to claim 9 or 10, characterized in that, The pivot member includes: a first rotation part having a swing axis in one of the front-rear direction and the left-right direction of the operation lever; The swing axis in the other direction, The shaft support member is pivotally supported on the rod support frame via the first rotating portion or the second rotating portion, The shaft support member is provided with a second restricting portion that directs the operating lever around the second rotating portion or the first rotating portion on the side not pivoted by the lever supporting frame. The allowable swing range of the swing axis is limited within a specified angle range. 12. The harvester of claim 11, wherein: The second restricting portion is composed of a groove portion that restricts the swinging range of the locking operating body within a specified range, and the locking operating body is disposed along the shaft direction of the operating lever away from the position of the swing axis of the second rotating part or the first rotating part on the pivot side of the support frame, The groove portion includes abutting portions abutting against the locking operating body at both end portions in a moving direction of the locking operating body accompanying swinging of the operating lever. 13. A harvester, characterized in that it has: The operating lever can be operated by swinging in the forward and backward direction and in the left and right direction; The steering drive part can turn to the left and right to operate the forward direction of the traveling body; a lifting drive unit capable of driving the lifting operation harvesting unit relative to the traveling body; and operating the linkage mechanism to transmit the swing operation of the operating lever to the steering drive part and the lifting drive part, The operation linkage mechanism has: a steering unit that links the operating lever with the steering drive; and a lifting unit, which links the operating rod with the lifting driving part, In the steering unit and the lifting unit, an output operating body that transmits the swinging motion of the operating lever to the steering driving part or the lifting driving part is provided, In the steering unit and/or the lifting unit, when the operating position of the operating lever is within a prescribed range, or the operating resistance acting on the output operating body is within a prescribed range, the output operation body moves integrally following the swinging action of the operating lever, and when the operating position exceeds the prescribed area or the operating resistance exceeds the prescribed range, the output operating body no longer integrally follows The operating rod allows the operating rod to perform a swing action independently. 14. The harvester of claim 13, wherein: In the steering unit and/or the lifting unit, a flexible linkage mechanism is provided between the operating rod and the output operating body, through which the output operating body follows the operation A state in which the lever moves integrally with the swinging action, and a state in which the output operating body does not integrally follow the operating lever but allows the operating lever to independently perform the swinging action. 15. The harvester of claim 14, wherein: The flexible interlock mechanism includes an elastic body that transmits the swing motion of the operating lever to the output operating body. 16. The harvester of claim 15, wherein: The elastic body can allow the operating lever to swing independently when the steering unit operates the steering drive part to the limit of movement, or when the lifting unit operates the lift drive part to the limit of movement. elastically deformed. 17. A harvester according to claim 15 or 16, characterized in that In the steering unit and/or the lifting unit, the output operating body is set to freely swing around the same axis as the swing axis of the operating lever, and the output operating body and the operating The operating bracket provided so that the lever integrally swings is connected via the elastic body. 18. The harvester of claim 17, wherein: The flexible interlocking mechanism includes an operation opening formed on the output operation body, and a locking body formed on the operation bracket so as to be inserted through the operation opening, and is configured according to the operation opening on the operation opening. The relative movement amount of the locking body within the range determines the misalignment amount between the operating position of the operating lever and the operating position of the output operating body. 19. The harvester of claim 18, wherein: The width of the operation opening along the direction of the rotation locus around the swing axis of the operation lever is set to be narrower than the maximum movement range of the locking body in the same direction. 20. The harvester of claim 18 or 19, wherein In the steering unit and/or the lifting unit, the output operating body includes: a cylindrical shaft portion externally fitted on a pivot shaft that pivotally supports the operating lever; and a plate-shaped swing plate portion integrally attached At the shaft portion of the cylinder, The swing plate part is provided with the opening for operation and a spring locking part, A coil spring as the elastic body is wound around the outer peripheral side of the cylindrical shaft portion, and each end portion of the both end sides of the coil spring is attached so as to be allocated to the card inserted through the operation opening. The fixed body and the two sides of the swing movement direction of the spring locking part. 21. The harvester of claim 20, wherein: An operation cable that transmits an operation force to the steering drive unit or the lift drive unit is connected to the side of the swing plate portion opposite to the side where the spring locking portion is provided. 22. The harvester according to any one of claims 18 to 21, wherein: A pivot shaft for pivotally supporting the operating lever is integrally formed with a holding frame for holding the pivot shaft, The holding frame, the operation bracket included in the operation lever, and the output operating body are arranged in an order of the holding frame, the operating bracket, and the output operating body, The locking body protrudes toward the side of the operation bracket, and the operation bracket is provided with a protruding member protruding to the side opposite to the side where the locking body is located, and a limiting member is formed on the holding frame. The opening for restriction allows the protruding member to pass therethrough so as to limit the swing range of the protruding member within a predetermined range. 23. The harvester according to any one of claims 13 to 22, wherein: The harvesting section is provided with a raking reel for raking and planting crops, and a reel lifting device for adjusting the up and down position of the raking reel. An input unit, the operation input unit is used to operate the drum lifting device to make the raking drum move up and down. 24. A harvester, characterized in that it has: The operating lever can be operated by swinging in the forward and backward direction and in the left and right direction; The steering drive part can turn to the left and right to operate the forward direction of the traveling body; The lifting drive part can drive the lifting operation harvesting part relative to the traveling body; operating a linkage mechanism to transmit the swing operation of the operating lever to the steering drive part and the lifting drive part; and a shaft supporting member supporting the operation lever in a manner to be able to swing around a swing axis in the front-rear direction and the left-right direction, The pivot member includes: a first rotation part having a swing axis in one of the front-rear direction and the left-right direction of the operation lever; The swing axis in the other direction, The first rotating part is rotatably supported by the body fixing part around the swing axis in the one direction, and the second rotating part is integrally rotated with the first rotating part around the swing axis in the one direction. , A restricting part is provided which restricts the rotation of the second rotating part around the swing axis in the one direction along with the rotation of the first rotating part within a predetermined angle range. 25. The harvester of claim 24, wherein: The restricting portion does not restrict the swing range of the operating lever around the swing axis in the other direction of the second rotating portion. 26. A harvester as claimed in claim 24 or 25, characterized in that The second pivoting portion includes a pivot portion supporting the operation lever, and an extension shaft portion extending from the pivot portion toward a direction in which the operation lever is not supported, and the extension shaft portion is connected to the restricting portion. Snap. 27. The harvester of claim 26, wherein: In the pivot portion, an output operating body is provided on the side opposite to the side where the extension shaft portion is provided, and the output operating body transmits the swinging motion of the operating lever around the swinging axis in the other direction. to the steering drive or the lift drive. 28. The harvester according to any one of claims 24 to 27, wherein: comprising a rod support frame attached to the fixed part of the body, The first rotation portion is supported by the rod support frame, and the restricting portion is provided on the rod support frame. 29. The harvester of claim 28, wherein: The restricting portion is formed by an opening formed in the rod supporting frame, and by abutting against the second rotating portion inserted into the opening, the movement of the second rotating portion around the swing axis in the one direction is controlled. The rotation is limited within the specified angle range. 30. The harvester of claim 28 or 29, wherein The rod supporting frame is provided with: a bearing part facing one end side of the first rotating part in the axial direction; and a connecting part provided at the other end of the first rotating part in the axial direction. side, In the shaft support member, a bearing portion to be inserted and removed from the bearing portion is provided on one end side of the first rotating portion in the axial direction, and the other end in the axial direction of the first rotating portion is provided with a bearing portion. On one end side, there is provided a connecting member that can be attached to and detached from the connecting portion from a direction that is in the same direction as the direction of insertion and removal of the bearing portion, The pivot member can be attached to and detached from the rod support frame from one side in the axial center direction of the first rotating portion. 31. The harvester according to any one of claims 24 to 30, wherein: The second rotation part and the first rotation part intersect each other on the upper side and the lower side, and are fixed to a common holding frame. 32. The harvester according to any one of claims 24 to 31, wherein: The operating lever includes a shaft portion supported by the second rotation portion and extending in the vertical direction, and the shaft portion is arranged so as to be located across the first rotation portion as viewed from the axial center direction of the first rotation portion. on the vertical line of the axis of the department. 33. The harvester according to any one of claims 24 to 32, wherein: A swing operation of the operating lever around the one-directional swing axis is detected by a potentiometer that detects rotation of the first rotating portion around the one-directional swing axis. 34. The harvester according to any one of claims 24 to 33, wherein: The harvesting section is provided with a raking reel for raking and planting crops, and a reel lifting device for adjusting the up and down position of the raking reel. An input unit, the operation input unit is used to operate the drum lifting device to make the raking drum move up and down.