JPH0742269Y2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention provides a cutting pretreatment device having a front cutting blade at the front part of a traveling machine body having a threshing part, and a rear position of the cutting pretreatment device. The present invention relates to a combine provided with a rear cutting blade.

(Prior art) Conventionally, this kind of combine conveys a grain culm to the front part of the traveling machine body provided with the threshing part, and the threshing part, for example, as shown in Japanese Utility Model Publication No. 63-10836. By protruding the feeder house, in the front part of the feeder house, a reaping pretreatment device having a platform and a front cutting blade is supported up and down with respect to the traveling machine body via an elevating device, The rear part of the traveling machine body is provided with a rear cutting blade located behind the cutting pretreatment device, the ground height of the front cutting blade is set high, and the rear cutting blade is placed at a position lower than the front cutting blade. Placed to reduce the amount of cutting by the front cutting blade to reduce the threshing load in the threshing section, and at the same time prevent the platform from plunging into the field during the cutting work, while stumps of the cuts cut by the front cutting blade. The rear cutting blade to cut it even lower There has been known was.

Also, when the traveling vehicle travels along a field scene, one of the left and right crawlers of the traveling vehicle enters the ridge groove, and the other crawler rides on the ridge. As a means for preventing the difference in the cutting height between left and right, leftover cutting of fallen grain culms, and support of the bottom surface of the sloped lower side of the platform to the field, etc. A horizontal control device is provided to allow rolling rotation, and the horizontal control device can adjust the cutting height of the grain culms at the left and right positions of the cutting pretreatment device so as to be approximately constant regardless of the inclination of the traveling machine body. The one configured as described above is proposed.
(Practical application No. 63-78793) (Problems to be solved by the invention) By the way, according to the former combine, the stump by the front cutting blade can be cut lower by the rear cutting blade in a flat field, Further, according to the latter combine, even in a field with unevenness, even if the traveling machine body is tilted to the left or right, it is possible to mow without the cutting pretreatment device plunging into the field. Therefore, when the former rear cutting blade for cutting the stump by the front cutting blade further lower and the horizontal control of the latter cutting pretreatment device are combined, the advantages of both, that is, the rear It seems that the advantage of being able to lower the stump with the cutting blade and cutting without precipitating the mowing pretreatment device into the field is obtained, but in reality the above-mentioned advantages of both cannot be obtained. .

That is, with the rear cutting blade that further cuts the stump by the former front cutting blade,
When combined with the horizontal control of the latter cutting pretreatment device,
The pre-mowing treatment device can be tilted with respect to the traveling machine body, but since the rear cutting blade is attached to the front part of the traveling machine body at a certain height while being used, one of the crawler of the traveling machine body is provided with a ridge. When the traveling body tilts to the left and right when it falls into the groove, the rear cutting blade tilts together with the traveling body, and it is not only possible to lower the stump overall, but also the rear cutting in use. There was a problem that the blade plunged into the field and was damaged.

The object of the present invention is a combine equipped with a pre-cutting device and a horizontal controller for the post-cutting blade and the pre-cutting device, but when the traveling machine body tilts left and right in an uneven field. An object of the present invention is to provide a combine harvester capable of preventing the rear cutting blade from plunging into the field even if the stump cannot be lowered.

(Means for Solving the Problem) Therefore, in the present invention, a cutting pretreatment device (15) having a front cutting blade (20) is provided at the front part of a traveling machine body (1) having a threshing part (6). A horizontal control device (30) is provided so as to be horizontally controllable, and the reaping pretreatment device (15) is supported via a first elevating device (11) so as to be vertically movable up and down with respect to the traveling machine body (1), while the traveling is performed. The rear cutting blade (40) located behind the pre-mowing treatment device (15) is supported on the machine body (1) so as to be freely moved up and down through the second lifting device (41), and the rear cutting blade (40 ) Is provided with horizontal control restricting means (43) that enables horizontal control of the pre-mowing treatment device (15).

(Operation) With the above configuration, in a flat field, the ground height of the pre-cutting device (15), that is, the ground height of the front cutting blade (20) is set high, and the front cutting blade (20) is used. Mowing the grain culm at a high position and reducing the amount of mowing to reduce the threshing load at the threshing section, and at the same time, in a flat field, the rear cutting blade (40) arranged at a position lower than the front cutting blade (20). By this, the stumps of the cut marks cut by the front cutting blade (20) can be cut in a low position. In addition, since the pre-cutting device (15) can be horizontally controlled only when the rear cutting blade (40) is retracted and raised, when the pre-cutting device (15) can be horizontally controlled in an uneven field. The rear cutting blade (4
0) is always located in the ascending and retracting position. Therefore, when the traveling machine body (1) tilts left and right to perform the horizontal control, the rear cutting blade (40) plunges into the field and is damaged. Can be prevented.

(Embodiment) The drawings apply the present invention to a general-purpose combine, and the combine has a traveling device (2) composed of a pair of left and right crawlers at a lower part of a traveling machine body (1) as shown in FIGS. 1 and 2. ) (2), the traveling unit (1) is provided with a control unit (3) on one side, and an engine (not shown) and a grain tank (4) are provided behind the control unit (3) to drive the vehicle. On the other side of the machine body (1), a threshing section (6) containing a screw-type handling barrel (5), and a receiving net (7) and a swing sorting device (8) below the threshing section (6).
And a wind sorter (9) using the wind of the Toran fan (9a).

On the other hand, at the front part of the traveling machine body (1), a feeder house (10) communicating with the front opening of the threshing part (6) is lifted and lowered through a first lifting device (11) composed of a lifting hydraulic cylinder. The feeder house (10) is freely installed, and a conveyor (12) is provided inside the feeder house (10) for transporting the cut culm from the cutting pretreatment installation (15) described later to the threshing unit (6). ,
The front end drum (12a) of the conveyor (12) is along the outer surface of the feeder house (10) via a transmission unit (13) such as a chain from a mission case (not shown) of the traveling machine body (1). It is driven to rotate.

The pre-mowing device (15) has a rectangular cylindrical insertion frame (1) communicating with the front end opening (10a) of the feeder house (10).
6) and detachably attached to the insertion frame body (16), and
It consists of a bucket-shaped platform (17) extending right and left over the entire width of the traveling machine body (1), and a reel (19) with a tine bar (18) is rotated on the platform (17) over the entire width of the traveling machine body (1). In addition to being drivable, the platform (17) is provided with left and right long front cutting blades (20) on the lower surface side, and the platform (17) is provided with a horizontally long auger (21) for scraping. The reel unit (19) and the auger (21) are rotationally driven from the transmission unit (13) via a transmission shaft (22) with a universal joint, and the front cutting blade (20) is also driven.

Thus, the grain rods pulled backward by the reel (19) of the pre-cutting treatment device (15) are cut by the front cutting blade (20), and then collected by the scraping auger (21). , The cutting rod sent to the center side in the platform (17) by the rotation of the auger (21), from the inlet (17b) in the rear plate (17a) of the platform (17) of the feeder house (10) At the location of the front end opening (10a), it is taken over by the conveyor (12) in the feeder house (10).

Further, the pre-mowing treatment device (15) is connected to the left and right in a substantially central position in the left-right direction through a support pin (23) projecting forward with respect to the front part of the feeder house (10). The configuration will be described in detail below.

That is, as shown in FIG. 3 and FIG. 4, the horizontal center position of the platform (17) of the left and right long sides in the pre-mowing treatment device (15) is separated from the horizontal center of the feeder house (10) by one side (L). ) Is located at a position that is offset.

The front end opening (10) at the front of the feeder house (10)
Of the pair of left and right vertical reinforcing frames (24) and (24) surrounding the a) and the lower beam reinforcing frame (25), at a position closer to the upper portion of the vertical reinforcing frame (24) closer to the left and right central portions of the traveling body (1). The support pin (23) rotatably supported by the mounted bearing (26) projects forward, and the support pin (23) has an opening area substantially the same as that of the front end opening (10a). The frame is inserted into a boss (27) near the upper side of the frame (16), penetrates a rear plate (17a) of the platform (17), and is fastened with a double nut (28).

The rear frame (15a) of the pre-mowing treatment device (15), which is arranged longitudinally along the upper end of the rear plate (17a) of the platform (17), is the upper surface of the insertion frame body (16). The hooking pretreatment device (15) is placed forward on the cutting frame pretreatment device (15) by being locked by a pair of left and right hook bodies (29) (29) that are placed upwards and project upward from both left and right upper portions of the interposition frame body (16). It is configured so as not to fall off.

Therefore, the pre-mowing treatment device (15) is attachable to and detachable from the interposition frame body (16), and the rear surface of the interposition frame body (16) in the pre-mowing treatment device (15) and the feeder house (10). ) Is a rolling rotation joint surface, and the pre-mowing treatment device (15) can rotate left and right with respect to the feeder house (10).

Further, reference numeral (30) is a horizontal control device (hereinafter referred to as a rolling control hydraulic cylinder) which is a rolling control hydraulic cylinder for rolling the cutting pretreatment device (15) left and right around the support pin (23). , The cylinder (3
The lower end of (0) is pivotally attached to the rear surface of the vertical reinforcing frame (24) located on the side of the feeder house (10) with a pin (30a), and the upper end is connected to the insertion frame body (16) with a connecting pin (30b). It is rotatably and pivotally attached by the hydraulic motor (31) and is vertically expanded and contracted. As a result, the cutting pretreatment device (15) can be driven by rolling from the control section (3) by a remote operation so that the pretreatment device (15) has an arbitrary left-right inclination angle.

Further, on the rolling rotation joint surface between the pre-mowing treatment device (15) and the feeder house (10), a plurality of rollers (32) and guide rails (33) are provided at a position apart from the rolling fulcrum. Thrust bearing means are provided so that smooth rolling can be performed.

Further, reference numeral (34) is a guide pin projecting forward from the lower beam reinforcing frame (25) of the feeder house (10), and the arc guide groove (lower end of the insertion frame body (16) from the guide pin (34) ( 3
It is inserted into 5) and bolted so that it cannot be pulled out, and serves as a guide for the rolling rotation of the pre-mowing treatment device (15).

Further, reference numeral (36) indicates that the front end opening (10a) of the feeder house (10) and the introduction port (17b) of the platform (17) in the pre-mowing treatment device (15) are substantially in phase with each other. It is a lock pin that can be moved forward and backward so that it can be held in position, and it can be moved from the manual lever (37) to the wire (37
It can be locked and unlocked by remote control by a), and the limit switch (38) that turns on when locked by the manual lever (18)
In relation to 9), the hydraulic cylinder (30) as a rolling drive means or the hydraulic motor (31) to the hydraulic cylinder (30) is turned off to prevent the cutting pretreatment device (15) from rolling carelessly.

Further, a rear cutting blade (40) located at the rear of the pre-mowing treatment device (15) is freely moved up and down in the front part of the traveling machine body (1) via a second lifting device (41) composed of a hydraulic cylinder. The rear cutting blade (40) is driven by turning on the rear cutting blade drive switch (42) of the rear cutting blade (40) and at the same time the second lifting device (41) is shortened. The cutting blade (40) is configured to be moved from the upper storage position to a lower position where the stump on the cut is harvested.

The rear cutting blade (40) is driven by, for example, a feeder house (1
This is done by using the power from the PTO shaft (not shown) in (0).

When the rear cutting blade (40) is used, the controller (39) turns off the horizontal control device (30) to turn the front cutting blade (2) on.
0) In other words, the horizontal control of the cutting pretreatment device (15) is disabled, and the horizontal control device (30) is turned on only when the rear cutting blade (40) is lifted and retracted to horizontally control the front cutting blade (20). The horizontal control regulating means (43) that enables the above is provided.

Specifically, as shown in FIG. 9, a horizontal sensor (44) having the traveling body (1) mounted on the input side of the controller (39).
And a tilt sensor (45) for detecting a relative tilt angle with respect to the traveling machine body (1) or the feeder house (10) provided in the cutting blade pretreatment device (15), and provided at the lower end of the cutting pretreatment device (15). When the cutting height sensor (46) and the traveling machine body (1) side and the pre-mowing treatment device (15), that is, the feeder house (10) are located at the upper shelter position, the feeder house (10) A rising detection sensor (47) that comes into contact with the switch and turns on, a horizontal control switch (48), a rear cutting blade drive switch (42), an automatic lifting switch (49), a limit switch (38), and a first switch described later. , Second detection switch (52)
While connecting the (53), the first elevating device (11), the second elevating device (41) and the rolling control hydraulic cylinder (30) are connected to the output side of the controller (39). Each signal from the sensor and each switch is input to the controller (39). When the rear cutting blade (40) is used, the horizontal control device (43) turns off the horizontal control device (30) to turn the front cutting blade (40). The horizontal control of 20) is disabled and the rear cutting blade (40)
The horizontal control device (30) is turned on only when the vehicle is not used, and a command signal is sent to the hydraulic cylinder (30) regardless of the left / right inclination of the traveling body (1), and the cutting pretreatment device (15) is substantially left and right. It was constructed so that the rolling control could be performed horizontally.

In addition, when the horizontal control switch (48) is turned on, the second lifting device (41) is extended and the rear cutting blade (40) is stored from the cutting position of the stump to the upper storage position. Only the horizontal control device (30) is operated.

Further, the first lifting device (11) is operated so that the cutting height can be controlled to fall within a certain range.

When the rear cutting blade drive switch (42) is turned on,
Alternatively, when the pre-mowing treatment device (15) is raised to the upper retracted position and the rise detection switch (47) is turned on, the horizontal control device (30) is turned off to release the horizontal control, and the traveling machine body (1) is released. In contrast, it is configured to automatically return to the parallel position.

In this case, for example, as shown in FIG. 11, the rolling control hydraulic cylinder (30) is slid to the side of the rolling cylinder (30) and the cylindrical body (50) that expands and contracts similarly to the expansion and contraction of the cylinder (30). And a sliding body (51) for detecting the expansion / contraction state of the cylinder (30) in the cylindrical body (50).
And a second detection switch (53) are provided, and based on the ON / OFF signals of these switches (53) (53), they are placed in a horizontal position with respect to the traveling machine body (1) of the pre-mowing treatment device (15). The movement by the hydraulic cylinder (30) at the time of returning is configured by a combination of continuous operation and pulse operation so that quick return can be performed with good responsiveness.

In addition, when the automatic cutting switch (49) is operated to lower the mowing pretreatment device (15) to a constant cutting height,
A grounded potentiometer is used as the cutting height sensor (46), and after the potentiometer has a slight voltage value, the operation by the first lifting device (11) is switched from continuous operation to pulse operation. By doing so, when the cutting height sensor (46) is not grounded, it is quickly lowered by continuous operation, but after the sensor (46) is grounded, it can be intermittently lowered by pulse driving. (15) can be moved up and down with good responsiveness, and shock when the pre-mowing treatment device (15) lands can be suppressed.

Next, the control mode by the controller (39) will be described based on the flowchart shown in FIG.

When the front cutting blade (20) and the rear cutting blade (40) are driven and used, when the ON signal of the rear cutting blade drive switch (42) is input to the controller (39), the horizontal control regulation is performed. Means (4
The horizontal control device (30) is turned off by 3) so that the horizontal control of the front cutting blade (20) is disabled, and the pre-mowing processing device (15) is returned to a position parallel to the traveling machine body (1). Of.

That is, when both the first detection switch (52) and the second detection switch (53) are turned on when the rear cutting blade drive switch (42) is turned on, as shown by the chain line in FIG. When viewed from the front of the traveling machine body, the pre-mowing treatment device (15) is inclined downward to the right (inclination to the right), so that the hydraulic cylinder (30) is first operated until the first detection switch (52) is turned off. The continuous extension operation is performed, and then the first detection switch (5
When 2) is turned off and the second detection switch (53) is turned on (Fig. 11), the pulse flag is set, and when the input signal from the tilt sensor (45) is tilted to the right, the hydraulic cylinder for rolling control is set. (30) is pulse-stretched to return the mowing pretreatment device (15) to a position parallel to the traveling machine body (1), and when the vehicle is tilted to the left, the hydraulic cylinder (30) is pulse-stretched. Let me
The pre-mowing treatment device (15) is returned to a position parallel to the traveling body (1).

Further, when the first detection switch (52) is off and the second detection switch (53) is off, the cutting pretreatment device (as seen from the front of the traveling machine body (1) as shown by the chain line in FIG. 8 ( 1) is inclined downward to the left (inclined to the left).
When the rolling control hydraulic cylinder (30) is continuously shortened until the detection switch (53) is turned on, and then the first detection switch (52) is off and the second detection switch (53) is turned on ( (FIG. 11), when the pulse flag is set and the input signal from the tilt sensor (45) is tilted to the left, the hydraulic cylinder (30) is pulse-shortened to set the cutting pretreatment device (15) to the traveling body (1). ), The hydraulic cylinder (30) is pulse-stretched when tilted to the right, and the cutting pretreatment device (15) is returned to the parallel position with respect to the traveling machine body (1).

On the other hand, when one of the traveling machine bodies (2) of the traveling machine body (1) enters the ridge and the traveling machine body (1) is tilted to the left and right when performing the cutting operation, the rear cutting blade drive switch (4) is used.
2) is turned off while the horizontal control switch (48) is turned on to horizontally control the pre-mowing treatment device (15) to perform mowing work.

When the rear cutting blade (40) is not in the upper storage position due to the turning on of the horizontal control switch (48), the second
The lifting device (41) is extended to forcibly store the rear cutting blade (40) in the upper storage position, and after the storage, for example, the traveling machine body (1) is detected based on the input signal from the tilt sensor (45). When tilting downward to the right when viewed from the front, by extending the hydraulic cylinder (30) by an appropriate amount, the insertion frame (centered around the support pins (23) on the front side of the feeder house (10) ( The cutting pretreatment device (15), which rolls integrally with the 16), is controlled to roll so that the left and right sides thereof return to a substantially horizontal position with the field scene.

On the contrary, when the traveling machine body (1) is tilted downward to the left when the traveling machine body (1) is viewed from the front, the traveling cylinder (30) is shortened by an appropriate amount to reduce the traveling speed. The pre-mowing treatment device (15) is maintained in a posture substantially horizontal to the field scene regardless of the inclination of the machine body (1) to the left or right.

Therefore, during such horizontal control, the rear cutting blade (40) is located in the upper storage position and is in a non-use state, which prevents the rear cutting blade (40) from plunging into the field and being damaged. It can be prevented.

When the pre-mowing treatment device (15) is raised to the upper retracted position with the horizontal control device (30) turned on,
When the raising detection sensor (47) is turned on by the movement of the pre-mowing processing device (15) to the upper retracted position, the pre-mowing processing device (1) is returned to the position parallel to the traveling machine body (1).

In this case, as the rise detection sensor (47) is turned on, the horizontal control switch (48) is turned off, the pulse flag is reset, and the rear cutting blade drive switch (42) is also set.
By performing the same operation as when the switch is turned on, the pre-mowing treatment device (15) can be returned to the position parallel to the traveling machine body (1).

In addition, although the general-purpose combine has been described in the above embodiments, it may be applied to a self-removing combine.

According to the present invention as described above, the front cutting blade (20) and the rear cutting blade (4
While using (0) and, the stumps of the reaping cut by the front cutting blade (20) can be cut low by the rear cutting blade (40),
When the traveling body (1) is tilted to the left or right,
5) is horizontally controlled by the horizontal control device (30) to prevent a difference in the height of left and right cutting, leftover cutting of the overgrown grain rod, and plunge of the pre-cutting device (15) into the field. When the device (30) horizontally controls the pre-mowing treatment device (15), the horizontal control restricting means (43) allows the rear cutting blade (40) to be horizontally controlled only when it is raised and retracted. Therefore, it is possible to reliably prevent the rear cutting blade (40) from being thrust into the field and damaged during the horizontal control.

[Brief description of drawings]

1 is a side view of the combine according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along line III-III of FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV of FIG. FIG. 5 is a sectional view taken along line VV of FIG.
FIG. 6 is a sectional view taken along line VI-VI, FIG. 7 is a sectional view taken along line VII-VII of FIG. 3, FIG. 8 is an explanatory view showing a horizontal control state, and FIG. 9 is a block diagram explaining control by a controller. FIG. 10 is a flowchart of the same, and FIG. 11 is an explanatory view of expansion / contraction state detecting means of the rolling control hydraulic cylinder. (1) …… Traveling machine (6) …… Threshing part (11) …… First lifting device (15) …… Mowing pretreatment device (20) …… Front cutting blade (30) …… Horizontal control device (40) ) …… Rear cutting blade (41) …… Second lifting device (43) …… Horizontal control regulation means

Claims (1)

[Scope of utility model registration request] 1. A cutting pretreatment device (15) having a front cutting blade (20) at the front of a traveling machine body (1) having a threshing section (6),
A horizontal control device (30) is provided so as to be horizontally controllable, and the reaping pretreatment device (15) is supported via a first elevating device (11) so as to be vertically movable up and down with respect to the traveling machine body (1), while the traveling is performed. In the machine body (1), the pre-mowing treatment device (15)
A rear cutting blade (40) located rearward of the rear cutting blade (40) is supported via a second elevating device (41) so that the rear cutting blade (40) can be moved up and down freely, and the pre-mowing treatment device (15) is provided only when the rear cutting blade (40) is retracted. A horizontal control restricting means (43) for enabling horizontal control of the combine is provided.