JP2022007304A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compactly and rotatably support an operating portion arranged so as to cover the front to the upper side of an engine without enlarging the size, and to install a radiator extending to the rear of the engine. Provide a work vehicle.
SOLUTION: An engine frame, an operating unit 9, an engine 10 mounted on the front portion of the aircraft frame and covered from the upper side to the front side by the lower surface side of the operating unit, and on the left and right outer sides of the engine. The arranged radiator 28, the opening / closing cover 26 that covers the left and right outer sides of the radiator and is supported so as to be openable / closable in a state of covering the radiator and a state of opening the radiator, and the operating unit of the machine frame from a normal use position. A vertical fulcrum frame member 36 having a rotation fulcrum that rotatably supports the engine to a rotation position that is rotated outward in the left-right direction is provided, and the fulcrum frame member is located on the rear side of the engine. , Arranged between the radiator and the opening / closing cover.
[Selection diagram] FIG. 5

Description

The present invention relates to a work vehicle in which the driving unit is configured to be rotatable in the left-right direction.

A traveling machine having an airframe frame supported by a traveling device, a driving unit arranged on one of the left and right sides of the front portion of the airframe frame and operated by an operator, and an engine covered on the lower surface side of the operating unit. In the vertical direction, the radiators arranged on the left and right outer sides of the engine and the driving unit are rotatably supported from the normal use position to the rotation position rotated in the left-right outward direction with respect to the airframe frame. The work vehicle described in Patent Document 1 provided with a fulcrum frame member is conventionally known.

According to the work vehicle of the above document, by rotating the driving unit to the rotation position, the front side and the upper side of the engine can be greatly opened and the maintenance work can be performed more smoothly. However, since the fulcrum frame member is arranged behind the rear end of the engine room or behind the radiator in a plan view, the rotation range of the driving unit is widened and the installation space of the radiator is limited. There was a problem of being done.

Japanese Patent No. 4675181

In the present invention, a radiator arranged so as to cover the front to the upper side of the engine is compactly rotatably supported without enlarging the front-rear direction of the driving unit, and a radiator extending to the rear of the engine is provided. The task is to provide a work vehicle that can be installed.

In order to solve the above problems, the present invention comprises a traveling machine having a machine frame supported by a traveling device, a driving unit provided on the front side of the traveling machine and operated by an operator, and the machine frame. An engine mounted on the front portion and covered from the upper side to the front side by the lower surface side of the driving unit, radiators arranged on the left and right outer sides of the engine, and the left and right outer sides of the radiator are covered with the radiator. The open / close cover that can be opened and closed in the covered state and the open state, and the operating unit can be rotated from the normal use position to the rotating position that is rotated outward to the left and right with respect to the airframe frame. A vertical fulcrum frame member having a rotating fulcrum to support is provided, and the fulcrum frame member is characterized in that it is arranged on the rear side of the engine and between the radiator and the opening / closing cover.

Second, the opening / closing cover has a vertical rotation shaft that rotatably supports in the left-right direction, and the fulcrum frame member is configured to be arranged in front of the rotation shaft. It is characterized by.

Thirdly, a first vertical frame member for supporting the opening / closing cover on the airframe frame side is provided.
It is characterized in that a connecting member in the front-rear direction for connecting the fulcrum frame member and the first vertical frame member is provided.

Fourth, a second vertical frame member erected from the machine frame side is provided on the opposite side of the fulcrum frame member with the radiator sandwiched between the fulcrum frame member and the second vertical frame member. A horizontal frame member in the left-right direction is provided, and an exhaust gas treatment device for treating exhaust gas discharged from the engine is supported via a mounting member provided on the horizontal frame member side.

Fifth, the fulcrum frame member is characterized in that the fulcrum frame member is divided and formed so that the portion that wraps with the radiator can be removed from the side view in a state where the operating portion is fixed at the position of use.

By arranging the fulcrum frame member having the rotation fulcrum of the driving unit between the opening / closing cover and the radiator in a plan view, the front-rear direction of the driving unit is not enlarged in the engine room. A large radiator that extends to the rear of the engine can be provided in the engine. Further, even if a large radiator is adopted and the rear end of the radiator is located behind the rear end of the cabin, the rotation fulcrum shaft and the rear of the cabin are similar to those in which the rotation fulcrum shaft is arranged behind the conventional radiator. It is possible to prevent the support member from becoming complicated due to the long distance from the end and the need for strength of the support member.

Further, the opening / closing cover has a vertical rotation shaft that rotatably supports in the left-right direction, and the fulcrum frame member is configured to be arranged in front of the rotation shaft. For example, it is possible to form the opening to which the radiator is exposed to be larger while rotating the operating portion compactly.

Further, according to the one provided with the first vertical frame member for supporting the opening / closing cover on the airframe side, and the connecting member in the front-rear direction for connecting the fulcrum frame member and the first vertical frame member. Since the first vertical frame member that supports the opening / closing cover can also be used as a member that rotationally supports the operating portion, the operating portion can be more stably supported on the machine frame side.

Further, a second vertical frame member erected from the machine frame side is provided on the opposite side of the fulcrum frame member across the radiator, and the fulcrum frame member and the second vertical frame member are connected to each other. According to a support for an exhaust gas treatment device that treats exhaust gas discharged from the engine via a mounting member provided on the horizontal frame member side, the fulcrum frame member is provided. The rigidity of the exhaust gas treatment device is further improved, and the workability of assembling the exhaust gas treatment device is also improved.

According to the fulcrum frame member, which is divided and formed so that the portion that wraps with the radiator can be removed from the side view when the driving unit is fixed at the position of use, the driving unit is rotated. Since the radiator can be completely exposed from the opening without rotating to the moving position, workability such as replacement and maintenance of the radiator is further improved.

It is a top view of the self-removing combine to which this invention is applied. It is a right side view of the head-feeding combine to which this invention was applied. It is the right side view of the main part which showed the open state of an opening / closing cover. It is a cross-sectional view of the main part which showed the arrangement structure of the lower part of the engine room which a cabin was switched to the use state. It is a cross-sectional view of the main part which showed the arrangement structure of the lower part of the engine room which a cabin was switched to a rotating state. It is the rear perspective view of the main part which showed the processing apparatus support mechanism. It is the main part perspective view which showed the engine room when the cabin was switched to the rotating state. It is a bottom perspective view of the main part when the cabin is switched to the rotating state.

1 and 2 are a plan view and a right side view of a head-feeding combine to which the present invention is applied. The illustrated combine includes a traveling machine body 2 having a pair of left and right crawler type traveling devices (traveling devices) 1, 1 and a pretreatment unit 3 connected to the front portion of the traveling machine body 2 so as to be able to move up and down. ..

The pretreatment unit 3 reciprocates the grain culms in the field by reciprocating in the left-right direction during the forward traveling of the traveling machine 2, and the reciprocating cutting blades cut by the cutting blades are rearward. It is provided with a transport device 6 for transport, and is configured to transport the cut grain culm backward to the threshing device 7 provided on the traveling machine 2 side by the transport device 6.

The traveling machine 2 has a machine frame 8 supported by a pair of left and right crawler type traveling devices 1, 1, and a cabin (driving unit) on which a control unit on which an operator rides is provided. 9, a grain tank 11 for storing grains, and the threshing device 7 are installed. The threshing device 7 is arranged on the left side of the traveling machine 2 (left side in the traveling direction, hereinafter simply left), and the grain tank 11 is arranged on the right portion of the traveling machine 2 (right side in the traveling direction, hereinafter simply right). , The cabin 9 is arranged in front of the Glen tank 11.

By the way, in the space formed between the cabin 9 and the grain tank 11 arranged behind the cabin 9, the engine 10, the intake pipe 12 for supplying air to the engine 10, and the engine An engine room 20 is formed in which exhaust gas treatment devices 13 and 14 for purifying the exhaust gas and an exhaust pipe 16 for discharging the exhaust gas discharged from the exhaust gas treatment device to the outside of the machine are housed.

The cabin 9 includes a seat 17 on which an operator sits, an operation panel for performing steering operations and work traveling from the front of the seat 17 to the left and right inside (right side in the illustrated example), and the seat 17. A floor board (floor step) 18 which is a floor surface formed on the front lower side is provided. Further, the frame (wall surface) member forming the lower surface side from the rear surface of the cabin 9 constitutes a partition wall forming a part of the front part of the engine room covering the engine 10. Specifically, it will be described later.

The threshing device 7 receives the harvested grain culms transported backward by the transport device 6 on the pretreatment unit 3 side, and performs threshing / sorting processing of the harvested grain culms. The grain culm that has been threshed by the threshing device 7 is transported to a post-processing unit 19 provided on the rear end side of the traveling machine 2 by a straw-removing body (not shown), and is cut by the post-processing unit 19. After that, it is discharged to the outside of the aircraft. The discharged matter sorted by the threshing device 7 is discharged to the outside of the machine, while the sorted grains are transported from the threshing device 7 into the grain tank 11.

The grain tank 11 is configured to be able to store grains that have been threshed and sorted by the grain removal device 7, and the grains stored in the grain tank 11 are the rear end portion of the traveling machine 2. It is configured so that it can be discharged to the outside of the machine by the auger 21 extended from.

The auger 21 extends in a straight line from the base end portion to the tip end portion with the vertical cylinder 22 arranged at the rear portion of the grain tank 11 and the upper end side of the vertical cylinder 22 as the base end portion. It has a discharge pipe 23 and a discharge port 24 provided on the tip end side of the discharge pipe to discharge the transported grains.

The entire auger 21 can swing up and down (elevate and lower) with the discharge pipe 24 as a fulcrum on the base end (upper end of the vertical cylinder) side, and the entire auger 21 swings left and right around the axis of the vertical cylinder 22. (Left and right turning) is possible. The plane and height position of the discharge port 24 can be adjusted by raising and lowering the auger 21 and turning left and right.

Next, the configuration of the engine room will be described with reference to FIGS. 1 to 5. FIG. 3 is a right side view of the main part showing the open state of the open / close cover, and FIG. 4 is a plan sectional view of the main part showing the arrangement configuration of the lower part of the engine room in which the cabin is switched to the used state. FIG. 5 is a plan sectional view of a main part showing an arrangement configuration on the lower side of the engine room in which the cabin is switched to the rotating state.

The engine room 20 is a space on the airframe frame 8 formed between the rear surface and the lower surface of the cabin 9 and the front surface of the grain tank 11 in a side view, and is open in the left-right direction. There is. Further, on the left and right outside (right in the illustrated example) side of the engine room 20, an opening is formed so that the inside of the engine room 20 can be visually recognized from the side side of the traveling machine body 2, and the opening is opened and closed. An opening / closing cover 26 is provided (see FIGS. 2 and 3).

Further, the rear side of the engine room 20 is opened upward by a space formed between the rear surface of the cabin 9 and the front surface of the grain tank 11, and the exhaust gas treatment devices 13 and 14 and the exhaust pipe 16 are opened. Is installed. On the other hand, on the front side of the engine room 20, the engine 10 and the like are placed and fixed in a state where the front side is covered from the upper side by the lower surface side of the cabin 9.

Specifically, the lower side of the cabin 9 constituting (the front part of) the engine room 20 will be specifically described. The cabin 9 is viewed from the side toward the floor plate 18 at the feet (downward toward the front). An inclined inclined portion 9a is formed, and the right side of the front end of the inclined portion 9a extends downward from the front end of the inclined portion toward the floor plate, while the left portion of the front end of the inclined portion 9a is formed. The side extends further forward (see FIGS. 3 and 4).

According to the configuration, the space between the front portion of the engine room 20, in other words, the rear end side of the cabin 9 to the front end side of the inclined portion 9a of the cabin 9, is mounted on the airframe frame 8. The engine 10 to be placed is housed (see FIGS. 3 and 4).

Further, on the left and right outside of the engine 10, a cooling fan 27 for blowing air from the left and right outside of the engine room 20 toward the engine and radiators 28 arranged on the left and right outside of the cooling fan 27 are provided. The left and right outer sides of the radiator 28 are configured to be openable and closable by the open / close cover 26. Incidentally, the transmission 29 is arranged in the space formed on the front side of the left half of the engine 10 (see FIG. 4).

Further, the engine room 20 has a treatment device support mechanism 31 that supports the exhaust gas treatment devices 13 and 14 vertically arranged on the rear side of the engine room, and the entire cabin 9 can be horizontally rotated toward the left and right outside. A support mechanism including a cabin support mechanism 32 that supports the aircraft frame 8 side is provided (see FIGS. 3 and 5 and the like).

The treatment device support mechanism 31 includes a diesel fine particle collection device (DPF) 13 to which the exhaust gas exhausted from the engine 10 is supplied as the exhaust gas treatment device for purifying the exhaust gas exhausted from the engine 10. The nitrogen oxide reduction device (SCR) 14 to which the exhaust gas exhausted from the diesel fine particle collection device 13 is supplied can be efficiently supported in the engine room 20. The specific configuration will be described later.

The cabin support mechanism 32 is used in a normal posture in which the operator on the seat 17 can perform a traveling operation by facing the front of the cabin 9, and the cabin 9 is rotated outward to the left and right from the used state. It is configured so that it can be switched to a rotating state, which is a moved posture.

As a result, by switching the cabin 9 constituting the ceiling surface in the front part of the engine room 20 to the rotating state, the upper side (front) of the engine 10 and the transmission 29 on the machine frame 8 can be opened. Therefore, maintenance work and the like can be performed more smoothly.

Incidentally, when the cabin 9 is in use, the bottom surface side of the cabin 9 is placed on the front end of the airframe frame 8 to maintain a stable posture, while when the cabin 9 is in a rotating state, the cabin support is supported. The cabin 9 is firmly pivotally supported by the mechanism 32 so as to stabilize the posture. The specific configuration will be described below.

Next, the configuration of the support mechanism will be specifically described with reference to FIGS. 3 to 8. FIG. 6 is a rear perspective view of a main part showing a processing device support mechanism.

The processing device support mechanism 31 includes a fulcrum frame member 36 in the vertical direction arranged on the rear side (rear side) of the engine 10 and on the left and right outer (right) sides of the radiator 28 in a plan view, and the fulcrum frame member 36. The first vertical frame member 37 in the vertical direction arranged behind the fulcrum frame member 36, the second vertical frame member 38 in the vertical direction arranged on the opposite sides of the radiator 28 sandwiching the radiator 28, and the above. A connecting frame member 39 (connecting member) in the front-rear direction that connects the fulcrum frame member 36 and the first vertical frame member 37, the fulcrum frame member 36 (or the first vertical frame member 37), and the second vertical frame member. It has a horizontal frame member 41 in the left-right direction to connect the 38.

The fulcrum frame member 36 is a columnar member extending upward from the airframe frame 8 side, is located on the rear end side of the cabin 9 in a side view, and is closed with the radiator 28 in a plan view. It is arranged between the open / close cover 26 in the state, and in particular, a cabin rotation shaft 36A that rotatably supports the cabin 9 is provided on the upper end side of the fulcrum frame member 36 (FIG. 3 and FIG. 4). The cabin rotation shaft 36A constituting the cabin support mechanism 32 will be described later.

Further, the fulcrum frame member 36 is divided and formed at a portion located in the middle of the vertical direction, more specifically, above the radiator 28 (or the higher one of the engine 10) in a side view. At the split position, the front end side of the connecting frame member 39 in the front-rear direction is connected (see FIG. 6).

Specifically, the fulcrum frame member 36 includes a lower frame member 36C extending from the airframe 8 side to a connecting position with the connecting frame member, and further upward from the upper end side of the lower frame member 36C. It is composed of an extended intermediate frame member 36B and the cabin rotation fulcrum shaft 36A provided on the upper end side of the intermediate frame member 36B, and the lower end side of the intermediate frame member 36B and the connecting frame member 39. While the front end upper surface side is firmly fixed, the front end lower surface side of the connecting frame member 39 and the lower frame member 36C (upper end side) are attached in a detachable configuration.

According to this configuration, when the opening / closing cover 26 is opened, a part of the fulcrum frame member 36 (lower frame member 36C) arranged so as to wrap around the front surface side of the radiator 28 can be removed. As a result, the entire radiator 28 can be exposed from the opening while the cabin 9 is supported by the cabin rotation support shaft 36A, so that maintenance such as cleaning, inspection, and replacement of the radiator 28 can be performed. The work can be performed more smoothly (see Fig. 3).

Incidentally, the lower frame member 36C is supported by providing a mounting seat that is easily attached to and detached from the adjacent radiator 28 side and connecting the lower frame member 36C (fulcrum frame member 36) to the engine 10 side. It may be configured so that the rigidity of the mechanism can be further increased.

Further, the fulcrum frame member 36 can be removed from the lower frame member 36C when the cabin 9 is switched to the used state, while the cabin 9 is switched to the rotating state. If this is the case, a load is applied to the fulcrum frame member 36, so that the lower frame member 36C may not be removed.

The first vertical frame member 37 is erected behind the support frame member 36, in other words, at the left and right outer ends of the rear end of the engine room 20, and is located on the left and right outer sides of the first vertical frame member 37. A cover mounting shaft 42 made of a hinge or the like that supports the opening / closing cover 26 so as to be openable / closable in the horizontal direction is mounted and fixed (see FIG. 4).

The second vertical frame member 38 is arranged on the left-right opposite side of the fulcrum frame member 36 with the radiator 28 interposed therebetween and behind the left portion of the engine 10. In other words, the front and rear positions of the second vertical frame member 38 are arranged between the fulcrum frame member 36 and the first vertical frame member 37 in a plan view, and the left and right positions thereof are inside the left and right of the engine room 20. (Right) It is located near the side end (see Fig. 4 etc.).

Further, the second vertical frame member 38 is provided so as to bridge the middle portion in the vertical direction and the upper side thereof between the first vertical frame member 37 arranged on the left and right outer sides. 41A and 41B are attached. Further, on the upper end side of the second vertical frame member 38, an auger holding portion 44 formed in a Y shape so as to support the auger 21 operated at the initial position via the bracket 43 is attached. ..

At this time, the bracket 43 that connects the auger holding portion 44 to the second vertical frame member side is configured to be connectable to the threshing device 7 side on the left side. As a result, the processing device support mechanism 31 is integrally connected to the threshing device 7 side, so that the rigidity of the entire support mechanism is further improved.

The horizontal frame member 41 has a frame shape arranged so as to bridge the upper end sides between the second vertical frame member 38 and the first vertical frame member 37, or a U-shape with an open front. It has an upper horizontal frame member 41B formed and an L-shaped lower horizontal frame member 41A arranged below the upper horizontal frame member 41B, and each horizontal frame member 41 has an exhaust gas treatment device 13, A mounting bracket 46 for supporting the 14 is provided.

Specifically, the mounting bracket 46 includes a lower mounting bracket 46A that is mounted on the lower horizontal frame member 41A side and supports the diesel fine particle collecting device 13, and a mounting bracket 46 that is mounted on the upper horizontal frame member 41. It has an upper mounting bracket 46B on which the nitrogen oxide reducing device 14 is supported (see FIGS. 6 and 7).

The lower mounting bracket 46A is supplied to the engine 10 on the front upper side of the engine 10 by being provided with a bracket extending forward or separately extending forward. It is configured to be able to support the air cleaner 15 that removes dust and the like in the air (see FIG. 6).

By the way, the mounting bracket 46 is formed in the frame-shaped horizontal frame member 41 so as to support the left and right end sides of the exhaust gas treatment devices 13 and 14 (in the shape of a frame extended in the front-rear direction). Since the exhaust gas treatment devices 13 and 14 in the left-right direction are provided so as to bridge between the left and right fulcrum frame members (first vertical frame member) and the second vertical frame member, the rigidity of the entire treatment device support mechanism 31 Is improved.

According to the processing device support mechanism 31 having the configuration, the air cleaner 15 is supported on the front upper side of the engine 10, and the diesel particulate filter (DPF) 13 is supported on the rear upper side of the engine 10. Since the nitrogen oxide reduction device (SCR) 14 can be supported on the upper side of the diesel particulate filter 13, the air cleaner 15 and the exhaust gas treatment devices 13 and 14 are mounted on the upper surface of the engine 10. From the side, the engine room 20 can be arranged in a vertically arranged state toward the rear portion of the engine room 20 having an open upper surface in a space-efficient manner.

In addition, the treatment device support mechanism 31 makes it possible to more smoothly assemble the air cleaner 15 and the exhaust gas treatment devices 13 and 14 at predetermined positions in the engine room.

Further, the processing device support mechanism 31 connects the first vertical frame member 37 vertically erected from the machine frame 8, the second vertical frame member 38, and the fulcrum frame member 36. By being configured to be integrally connected via the frame member 39 and the horizontal frame member 41, it is possible to obtain sufficient rigidity to collectively support the exhaust gas treatment device (and the air cleaner). can.

Further, according to the processing device support mechanism 31, the fulcrum frame member 36 and the first vertical frame member on which the rotation axis of the opening / closing cover 26 is supported are offset back and forth in the plan view. The cabin rotation that rotatably supports the cabin 9 in the engine room 20 while mounting the large radiator 28 extending to the rear end side of the engine room 20 (while widening the engine room 20). A shaft 36A can be provided.

Next, the cabin support mechanism will be described with reference to FIGS. 7 and 8.
FIG. 7 is a perspective view of the main part showing the engine room when the cabin is switched to the rotating state, and FIG. 8 is a perspective view of the bottom of the main part when the cabin is switched to the rotating state.

The cabin support mechanism 32 includes the cabin rotation shaft 36A, a rear link arm 51 having a rotation shaft provided on the same axis of the cabin rotation shaft 36A, and a front side of the rear link arm 51. A front link arm 52 provided with a rotation shaft, and a rail member 53 mounted and fixed to the lower surface side of the cabin 9 and extended in the left-right direction along the rear end side of the floor plate 18 of the cabin 9 in a plan view. It is composed of and.

The cabin rotation shaft 36A is provided on the upper side of the fulcrum frame member 36, and specifically, is a shaft-shaped member erected further upward from the upper end side of the intermediate frame member 36B. .. On the other hand, on the left and right outer (right) sides of the rear end of the cabin, a cabin bearing portion 54 that rotatably supports the cabin 9 around the cabin rotation shaft 36A is provided (FIG. 7). reference).

The cabin bearing portion 54 includes a bearing body 54A which is a cylindrical boss member through which the cabin rotation shaft is inserted, and a mounting bracket 54B which firmly mounts and fixes the bearing body 54A to the rear end side surface side of the cabin 9. It is composed of and.

Incidentally, the fulcrum frame member 36 having the cabin rotation shaft 36A is integrally connected to the first vertical frame member 37 and the second vertical frame member 38 by the processing device support mechanism 31, and also said. By being connected to the engine 10 and the threshing device side, the cabin 9 can be more firmly pivotally supported.

At this time, since the second vertical frame member 38 is provided behind the left and right inner (left) sides of the engine 10, the cabin 9 is switched to the rotating state, and the upper side and the front side of the engine 10 are moved. When the second vertical frame member 38 is opened, the second vertical frame member 38 does not get in the way, so that the efficiency of maintenance work and the like is further improved.

The rear link arm 51 is supported so that its base end side can be rotatably supported in the left-right direction about the rear link rotation shaft 56 provided on the airframe frame 8 side below the opening / closing cover 26. The rear link rotation shaft 56 is arranged on the same axis as the cabin rotation shaft 36A (see FIGS. 5 and 8 and the like).

The rear link rotation shaft 56 is formed with a concave portion 8a in which the machine frame 8 is recessed in a U shape toward the left and right inward, so that the upper end side thereof is attached and fixed to the machine frame 8 side. The boss portion 51a provided on the base end side of the side link arm 51 by welding or the like is externally rotatably mounted to prevent the boss portion 51a from coming off on the lower end side of the rear link rotation shaft 56. The disk member 55 is fixed with a bolt (see FIG. 8).

Further, the rear link arm 51 is provided with a rod-shaped cabin support 57 extending upward on the tip end side thereof, and the cabin support 57 is the rail member 53 on the bottom surface side of the cabin 9. It is connected so as to support the vicinity of the left and right outer ends of the above (see FIG. 8 and the like).

According to the configuration, the rear link arm 51 is held at a position extending in the front-rear direction along the fuselage frame 8 from the rear link rotation shaft 56 when the cabin 9 is in use. When the cabin 9 is switched to the rotating state, the cabin 9 is rotated outward to the left and right around the rear link rotating shaft 56.

The front link arm 52 is configured to be rotatable in a horizontal direction about a front link rotation shaft 58 provided in the vicinity of the front end side of the opening / closing cover 26 in a closed base end side, and is configured to be rotatable in the horizontal direction. Is configured to be slidable on the rail member 53 mounted and fixed to the lower surface side of the cabin 9, and is connected to the rail member 53 side (see FIG. 8).

According to the front link arm 52 and the rail member 53 having the same configuration, it is possible to guide the horizontal (left and right) rotation operation of switching from the used state to the rotating state and from the rotating state to the used state of the cabin 9, so that the cabin 9 can be guided. The posture switching of is smoother.

According to the cabin support mechanism 32 configured as described above, the cabin 9 is left and right with respect to the cabin rotation shaft 36A (rear side link rotation shaft 56) provided on the left and right outer sides of the rear end in a plan view. The cabin 9 can be supported on the airframe frame 8 side in a state of being rotatable outward in the direction (see FIGS. 5 and 8), and the cabin 9 is provided on the lower surface side of the cabin 9 on the center side in the front-rear direction. The rail member 53 in the left-right direction is supported by the front link arm 52 and the rear link arm 51 so as to support the cabin 9 in a configuration that allows left-right rotation. The cabin 9 that is rotated to the left and right outside of the frame 8 can be supported in a more stable state.

Further, according to the configuration, the rotation fulcrum of the cabin 9 is the cabin rotation shaft 36A on the upper side of the fulcrum frame member 36 and the rear link rotation shaft 56 below the fulcrum frame member 36. By dividing the cabin 9 into upper and lower parts, it is possible to prevent the cabin 9 from tilting during the rotation operation and to secure the strength of the cabin support mechanism. Therefore, the rotation operation of the cabin becomes smoother and more stable.

Further, the fulcrum frame member 36 that supports the cabin rotation shaft 36A is connected to each frame member (first vertical frame member 37, second vertical frame member 38) that constitutes the processing device support mechanism 31. Therefore, even if the cabin 9 is switched to the rotating state and the cabin 9 is cantilevered by the fulcrum frame member 36 (cabin support mechanism 32), the cabin 9 can be cantilevered. The cabin 9 can be stably supported.

1 Crawler type traveling device (traveling device)
2 Traveling aircraft 8 Airframe frame 9 Cabin (driving part)
10 Engine 13 Diesel particulate collector (exhaust gas treatment device)
14 Nitrogen oxide reduction device (exhaust gas treatment device)
26 Open / close cover 28 Radiator 36 Supporting frame member 37 First vertical frame member 38 Second vertical frame member 39 Connecting frame member (connecting member)
41 Horizontal frame member 42 Cover mounting shaft (rotating shaft)

Claims (5)

A traveling aircraft having an aircraft frame supported by a traveling device,
A driving unit provided on the front side of the traveling machine and operated by the operator.
An engine mounted on the front part of the fuselage frame and covered from the upper side to the front side by the lower surface side of the driving part.
The radiators located on the left and right outside of the engine,
An opening / closing cover that covers the left and right outside of the radiator and is supported so as to be openable / closable in a state of covering the radiator and a state of opening the radiator.
A vertical fulcrum frame member having a rotation fulcrum that rotatably supports the operation unit from a normal use position to a rotation position rotated in the left-right outward direction with respect to the airframe frame.
The fulcrum frame member is a work vehicle arranged on the rear side of the engine and between the radiator and the opening / closing cover. The opening / closing cover has a vertical rotation axis that rotatably supports in the left-right direction.
The work vehicle according to claim 1, wherein the fulcrum frame member is configured to be arranged in front of the rotation shaft. A first vertical frame member for supporting the opening / closing cover on the machine frame side is provided.
The work vehicle according to claim 1 or 2, wherein a connecting member in the front-rear direction for connecting the fulcrum frame member and the first vertical frame member is provided. A second vertical frame member erected from the airframe frame side is provided on the opposite side of the fulcrum frame member across the radiator.
A horizontal frame member in the left-right direction for connecting the fulcrum frame member and the second vertical frame member is provided.
The work vehicle according to any one of claims 1 to 3, which supports an exhaust gas treatment device that treats exhaust gas discharged from the engine via a mounting member provided on the horizontal frame member side. The work according to any one of claims 1 to 4, wherein the fulcrum frame member is divided and formed so that a portion that wraps with the radiator can be removed from a side view in a state where the operating portion is fixed at a position of use. vehicle.

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