JP7421699B2 - combine - Google Patents

Description

The present invention relates to a combine harvester equipped with a discharge auger for discharging harvested products from a grain tank to the outside of the machine.

A reaping device for harvesting grain culms is installed on the front side of the machine frame, and a threshing device for threshing and sorting the grain culms harvested by the reaping device and a control section for carrying an operator are installed behind the reaping device. A combine harvester is known that is provided with a grain tank that stores grains that have been harvested and a discharge auger that discharges the grains in the grain tank to the outside of the machine (see Patent Document 1).

Japanese Patent Application Publication No. 2015-165778

In conventional combine harvesters, traveling of the machine body was prohibited during the discharge operation in which the harvesting device was lowered and the discharge auger was operated to discharge grains to the outside of the machine. However, during normal discharge operations, the reaping device moves upwards, so when the discharge auger is activated to discharge grain outside the machine, the machine can be freely operated forward or backward, and the discharge auger There was a situation where grains were spilling out.

The present invention has been made in view of the above, and provides a combine harvester that prevents the harvest from spilling from the discharge auger even if the machine is moved forward or backward during the discharge operation, and can perform the appropriate discharge operation. It is to be.

The first invention is
A reaping device (3) is provided on the front side of the fuselage frame (1), and a threshing device (4), a control section (5), and a grain tank (7) for storing harvested products are provided behind the reaping device (3). In a combine harvester equipped with a discharge auger (8) for discharging the harvested material in the grain tank (7) to the outside of the machine,
The operation of the discharge auger (8) will be stopped if the machine is moved forward or backward during the discharge operation where the discharge auger (8) is operated to discharge the harvested material in the grain tank (7) to the outside of the machine. A combine harvester equipped with a control device (65) that
This combine harvester is characterized by moving forward or backward after stopping the operation of the discharge auger (8).
The second invention is
The first feature is that, as long as the parking brake pedal (15) is depressed and operated during the ejection operation, the operation of the ejection auger (8) does not stop even if the aircraft is operated to move forward or backward. This is a combine harvester of the present invention.
The third invention is
After the control device (65) stops the operation of the discharge auger (8) by moving the machine forward or backward during discharge work, the operation of the discharge auger (8) will remain stopped even if the machine is stopped. The combine harvester of the first or second present invention is characterized in that:
The fourth invention is
After the control device (65) stops the operation of the discharge auger (8) by moving the machine forward or backward during the discharge operation, the operation of the discharge auger (8) is restricted unless the machine is stopped. A combine harvester according to any one of the first to third aspects of the present invention, characterized by:
The fifth invention is
When the discharge auger (8) is moved from the storage position to the discharge operation position, the control device (65) sets the auxiliary transmission to medium or low speed even if the mode select operation tool (13E) is set to road driving mode. The combine harvester according to any one of the first to fourth aspects of the present invention is characterized in that:

According to the present invention, the operation of the discharge auger 8 is stopped when the machine is operated to move forward or backward during a discharge operation in which the discharge auger 8 is operated to discharge the harvested material in the grain tank 7 to the outside of the machine. Since the control device 65 is provided, if a forward or backward movement is performed accidentally or intentionally during the discharge operation, the discharge of the harvest by the discharge auger 8 is stopped, and spillage of the harvest can be prevented.

A first invention related to the present invention is that a reaping device 3 is provided on the front side of the machine frame 1, and a threshing device 4, a control section 5, and a grain tank 7 for storing harvested products are provided behind the reaping device 3. In a combine equipped with a discharge auger 8 for discharging the harvested material in the grain tank 7 to the outside of the machine, the machine is moved forward or backward during the discharge operation in which the discharge auger 8 is operated to discharge the harvested material in the grain tank 7 to the outside of the machine. This combine harvester is equipped with a control device 65 that stops the operation of the discharge auger 8 when an operation is performed.
A second invention related to the present invention is the combine of the first invention related to the present invention, in which the machine moves forward or backward at a slower speed than usual when the machine is operated to move forward or backward during the discharge operation. It is.

A third invention related to the present invention is the combine harvester according to the first or second invention related to the present invention, which moves forward or backward after the operation of the discharge auger 8 is stopped.

A fourth invention related to the present invention is that if the parking brake pedal 15 is depressed during the discharge operation, the operation of the discharge auger 8 is not stopped even if the aircraft is moved forward or backward. This is a combine harvester according to any one of the first to third inventions related to the present invention .

A fifth invention related to the present invention is that after the control device 65 stops the operation of the discharge auger 8 by moving the machine forward or backward during the discharge operation, the discharge auger 8 will continue to operate even if the machine is stopped. The combine harvester according to any one of the first to fourth inventions related to the present invention, whose operation remains stopped.

A sixth invention related to the present invention is that after the control device 65 stops the operation of the discharge auger 8 by moving the machine forward or backward during the discharge operation, the discharge auger 8 must be stopped unless the machine is stopped. This is a combine harvester according to any one of the first to fifth inventions related to the present invention that regulates operation.

A seventh invention related to the present invention is that when the discharge auger 8 is changed from the storage position to the discharge operation position, even if the mode select operation tool 13E is set to the road driving mode, the control device 65 switches the sub-transmission device to the middle. This is a combine harvester according to any one of the first to sixth inventions related to the present invention, in which the speed is increased or decreased.

FIG. 1 is a plan view of a combine harvester according to an embodiment of the present invention. FIG. 1 is a left side view of a combine harvester according to an embodiment of the present invention. FIG. 1 is a partial front view of a combine harvester according to an embodiment of the present invention. FIG. 1 is a vertical cross-sectional view in the left-right direction of a transmission of a combine harvester according to an embodiment of the present invention. It is an explanatory view of a brake device of a transmission of a combine according to an embodiment of the present invention. FIG. 1 is a side view of a brake pedal assembly for a combine harvester according to an embodiment of the present invention. FIG. 1 is an enlarged side view of a brake pedal assembly for a combine harvester according to an embodiment of the present invention. FIG. 1 is an enlarged plan view of a brake pedal assembly for a combine harvester according to an embodiment of the present invention. 1 is an enlarged front view of a brake pedal assembly of a combine harvester according to an embodiment of the present invention. 1 is a connection diagram of a control device for a combine harvester according to an embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A combine harvester which is an embodiment of the present invention will be described below with reference to the accompanying drawings. In order to make it easier to understand, directions are conveniently shown and explained with the front as the front, the rear as the rear, the right hand side as the right side, and the left hand side as the left side, as seen from the operator. The configuration is not limited.

The combine harvester is provided with a left and right traveling device 2 consisting of a pair of right and left crawlers that run on the soil surface on the lower side of the body frame 1, and a reaping device 3 for harvesting grain culms in the field on the front side of the body frame 1. . Further, a threshing device 4 for threshing and sorting the grain culms harvested by the reaping device 3 is provided on the rear left side of the reaping device 3, and a control section 5 on which an operator rides is provided on the rear right side of the reaping device 3. It is being

An engine room 6 in which an engine is mounted is provided below the control unit 5, and a grain tank is provided at the rear of the control unit 5 to store grains as harvested products that have been threshed and sorted by the threshing device 4. 7 is provided, and the grains stored in the grain tank 7 are discharged to the outside by a discharge auger 8 connected to the grain tank 7.

A pilot seat 11 is provided at the rear of the pilot section 5 in which the pilot is seated, a front panel 12 is provided in front of the pilot seat 11, and a side panel 13 is provided on the left side of the pilot seat 11. There is. In addition, a floor 14 for the operator to get on and off is provided at the lower part between the cockpit 11 and the front panel 12, and a parking brake pedal 15 for stopping the traveling device 2 is provided at the front left portion of the floor 14. ing.

A monitor 12A that displays the traveling speed of the traveling device 2, etc. is provided on the left side of the front panel 12, and an operating lever 12B that operates the turning of the traveling device 2 and the raising and lowering of the reaping device 3 is provided on the right side. ing.

An emergency stop switch 12C for stopping the engine is provided at the upper part between the monitor 12A and the operating lever 12B, and an automatic brake switch 12D for stopping the travel of the traveling device 2 is provided at the lower part.

A main shift lever (HST lever) 13A is provided on the left front part of the side panel 13 to operate a hydraulic continuously variable transmission 30 that increases/decelerates the rotation speed output from the engine and switches the rotation direction. A sub-shift lever 13B is provided on the rear side of the lever 13A to operate a transmission 31 that increases or decreases the rotational speed output from the hydraulic continuously variable transmission 30.

A hand-handling lever 13C is provided on the left side of the main shift lever 13A for switching to ridge mowing work in which an auxiliary worker threshes the harvested grain culm while placing it on the conveying device 3A at the rear of the reaping device 3. A harvest discharge lever 13D for discharging grains stored in the grain tank 7 to the outside by a discharge auger 8 is provided on the rear side of the grain tank 13B.

When the main shift lever 13A is placed in the neutral position, the rotational speed output from the hydraulic continuously variable transmission 30 becomes zero. When the main shift lever 13A is tilted forward, the rotation direction output from the hydraulic continuously variable transmission 30 is the same forward rotation as the rotation direction transmitted from the engine. As the rotational speed output from the hydraulic continuously variable transmission 30 becomes faster and the inclination angle of the front tilted position becomes smaller, the rotational speed output from the hydraulic continuously variable transmission 30 becomes slower. When the main shift lever 13A is in the rearward tilted position, the rotational direction output from the hydraulic continuously variable transmission 30 is opposite to the rotational direction transmitted from the engine, and the tilt angle of the rearward tilted position is As the angle increases, the rotational speed output from the hydraulic continuously variable transmission 30 becomes faster, and as the inclination angle of the rear side tilted position becomes smaller, the rotational speed output from the hydraulic continuously variable transmission 30 becomes slower. Further, the attitude of the main shift lever 13A is detected by a main shift sensor 23A, such as a potentiometer, mounted at the bottom of the main shift lever 13A.

When the sub-shift lever 13B is tilted to the low speed position, the rotational speed transmitted from the hydraulic continuously variable transmission 30 is reduced by the transmission 31 and transmitted to the traveling device 2, and when the sub-shift lever 13B is tilted to the medium speed position. In this case, the rotational speed transmitted from the hydraulic continuously variable transmission 30 is transmitted to the traveling device 2 without being increased or decreased, and when tilted to a high speed position, the rotational speed transmitted from the hydraulic continuously variable transmission 30 is The speed is increased and transmitted to the traveling device 2. Further, the attitude of the sub-shift lever 13B is detected by a sub-shift sensor 23B, such as a potentiometer, mounted at the bottom of the sub-shift lever 13B.

When the hand lever 13C is set to the forward tilted position, the lifting device of the reaping device 3 is activated to enter the normal reaping and threshing work mode, and when the hand lever 13C is set to the rearward tilted position, the lifting device etc. The drive of the device etc. is stopped and the manual reaping work mode is entered in which the auxiliary worker performs threshing while loading the harvested grain culm onto the conveying device 3A of the reaping device 3. In addition, the posture of the hand lever 13C is detected by a hand sensor 23C such as a potentiometer mounted at the bottom of the hand lever 13C, and the hand sensor 23C is turned ON in the hand mowing mode. , it is turned OFF in the normal reaping and threshing operation mode.

When the harvest discharge lever 13D is tilted forward, the grains stored in the grain tank 7 are discharged by the discharge auger 8 to the storage tank of an external harvest transport vehicle (a truck equipped with a storage tank on the loading platform), etc. When the crop discharge mode is set to , and the crop discharge lever 13D is set to the backward tilted position, the conveying spiral within the discharge auger 8 is stopped and the crop non-discharge mode is entered. In addition, the posture of the crop discharge lever 13D is detected by a discharge sensor 23D such as a potentiometer attached to the lower part of the crop discharge lever 13D, and the discharge sensor 23D is turned ON in the crop discharge mode. It is turned off in the case of crop non-discharge mode.

Further, the upper end of the grip portion of the harvest discharge lever 13D is provided with a left/right rotation switch, a vertical movement switch, and a telescopic switch. By operating the left/right rotation switch, the discharge auger 8 can be rotated in the directions of arrows (a) and (b) with the base as the center of rotation, and by operating the up/down switch, the tip can be rotated with the base as the center of rotation. The discharge port can be moved up and down, and the discharge auger 8 can be extended and contracted in the directions of arrows (c) and (d) by operating the telescopic switch.

The transmission 31 includes a first speed change shaft 32, a second speed change shaft 33, left and right counter shafts 34A, 34B, and left and right output shafts 35A, 35B, which extend in the left-right direction from the upper side of the transmission toward the lower side. It is provided.

The first speed change shaft 32 is fitted with gears having different diameters that are movable in the left-right direction, and the second speed change shaft 33 is provided with gears having different diameters. As a result, the rotational speed transmitted from the hydraulic continuously variable transmission 30 to the first shift shaft 32 can be changed by operating the sub-shift lever 13B to move the gear fitted onto the first shift shaft 32 in the left-right direction. The speed can be increased or decreased and transmitted to the second speed change shaft 33.

Left and right sleeves 36A and 36B, which are movable in the left and right direction, are fitted onto both sides of the left and right counter shafts 34A and 34B, respectively. Further, left and right brake devices 37A and 37B each having a large number of brake pads are provided at both ends of the left and right counter shafts 34A and 34B. As a result, when the operating lever 12B is tilted to the left, the left sleeve 36A fitted onto the left counter shaft 34A moves to the left, and the left counter shaft 34A and the left output shaft of the left counter shaft 34A move to the left. The gear fitted externally at a position opposite to the gear provided at 35A is disengaged, and transmission of rotational speed from left counter shaft 34A to left output shaft 35A can be interrupted. Further, the brake pad moves leftward and comes into contact with the brake disc, so that the left brake device 37A is activated and the rotation of the left output shaft 35A can be stopped. The left sleeve 36A is connected to the upper part of the left first plate 40A, which extends in the vertical direction and is attached to the front wall of the transmission 31, via the left shifter 38A, which extends in the vertical direction.

When the operating lever 12B is tilted to the right, the right sleeve 36B fitted on the right counter shaft 34B moves rightward, and the right sleeve 36B, which is provided on the right counter shaft 34B and the right output shaft 35B of the right counter shaft 34B, moves to the right. The gear fitted externally at a position opposite to the rotated gear is disengaged, and transmission of rotational speed from the right counter shaft 34B to the right output shaft 35B can be interrupted. Further, the brake pad moves rightward and comes into contact with the brake disc, and the right brake device 37B is activated to stop the rotation of the right output shaft 35B. Note that the right sleeve 36B is connected to the upper part of a right first plate 40B that extends in the vertical direction and is attached to the front wall of the transmission 31 via a right shifter 38B that extends in the vertical direction.

When the parking brake pedal 15 is depressed, the left sleeve 36A of the left counter shaft 34A moves to the left, interrupting the transmission of rotational speed from the left counter shaft 34A to the left output shaft 35A, and rotation can be stopped. At the same time, the right sleeve 36B of the right counter shaft 34B moves rightward to cut off the transmission of rotational speed from the right counter shaft 34B to the right output shaft 35B, thereby stopping the rotation of the right output shaft 35B. can.

The lower part of the first left plate 40A is connected to the left part of the second left plate 41A extending in the upper right direction and connected to the operating lever 12B via a wire cable (not shown), and the third left plate 41A extending in the vertical direction. It is connected to the top of plate 42A. Further, the lower part of the first left plate 40A, the left part of the second left plate 41A, and the upper part of the third left plate 42A are rotatably supported by a left support shaft 43A extending in the front-rear direction. Here, the first left plate 40A, the second left plate 41A, and the third left plate 42A are collectively referred to as a left rotating plate 45A. As a result, when the operating lever 12B is tilted to the left, the left rotation plate 45A rotates clockwise when viewed from the axis of the left support shaft 43A, and the left sleeve 36A is moved to the left counter via the left shifter 38A. It can be moved to the left along axis 34A.

The lower part of the first right plate 40B is connected to the right part of the second right plate 41B extending in the upper left direction and connected to the operating lever 12B via a wire cable (not shown), and the third right plate 41B extending in the vertical direction. It is connected to the top of plate 42B. Further, the lower part of the first right plate 40B, the right part of the second right plate 41B, and the upper part of the third right plate 42B are rotatably supported by a right support shaft 43B extending in the front-rear direction. Here, the first right plate 40B, the second right plate 41B, and the third right plate 42B are collectively referred to as a right rotation plate 45B. As a result, when the operating lever 12B is tilted to the right, the right rotation plate 45B rotates counterclockwise when viewed from the axis of the right support shaft 43B, and the right sleeve 36B is moved to the right via the right shifter 38B. It can be moved to the right along the counter shaft 34B.

A support shaft 50 extending in the front-rear direction is provided at a lower portion between the left support shaft 43A and the right support shaft 43B in the left-right direction. The support shaft 50 has a center portion of a swing plate 51 that extends in the vertical direction and is rotatable.

A pin 52A extending in the front-rear direction is provided at the upper part of the swing plate 51, and a pin 52B extending in the front-rear direction is provided at the lower part of the swing plate 51. The pin 52A is connected to the parking brake pedal 15 via the brake pedal rod 53. Further, the pin 52B is inserted into an elongated hole 58 formed along the longitudinal direction of the rod 54 formed at the right end portion of the plate-shaped rod 54 extending in the left-right direction.

In front view, the right part of an arm 55A extending in the lower left direction is fixed to the vertically intermediate part between the support shaft 50 and the pin 52A in the swing plate 51, and the right part of the arm 55A extending in the lower left direction is fixed to the vertically intermediate part between the support shaft 50 and the pin 52B. The left part of an arm 55B extending in the upper right direction is fixed to.

An elongated hole 56A is formed along the longitudinal direction of the arm 55A on the right side of the arm 55A, and an elongated hole 56B is formed on the left side of the arm 55B along the longitudinal direction of the arm 55B.

A left pin 57A extending in the front-back direction is inserted into the elongated hole 56A, and a left pin 57A extending in the front-rear direction is inserted into the front surface of the left third plate 42A forming the left rotation plate 45A, and a right third plate forming the right rotation plate 45B is inserted into the elongated hole 56B. A right pin 57B extending in the front-rear direction is inserted into the front surface of the plate 42B. As a result, when the parking brake pedal 15 is depressed, the swing plate 51 rotates counterclockwise when viewed from the center of the support shaft 50, so that the left support shaft 43A is rotated via the arm 55A and the left pin 57A. When viewed from the axial center, the left rotating plate 45A rotates clockwise, and the left sleeve 36A can be moved to the left along the left counter shaft 34A via the left shifter 38A. In addition, the right rotating plate 45B rotates counterclockwise in the axial view of the right support shaft 43B via the arm 55B and the right pin 57B, and the right sleeve 36B is moved to the right counter shaft 34B via the right shifter 38B. You can move it to the right along the line.

An auxiliary device 60 formed from an electric motor or the like is provided at the left end of the rod 54 to assist in depressing the parking brake pedal 15. When the operator depresses the parking brake pedal 15 (when the potentiometer 25, which is a sensor described below, outputs an ON output), the rotation shaft 61 of the auxiliary device 60 rotates clockwise and the rod 54 is rotated through the crank plate 62. move to the left. As a result, when the operator depresses the parking brake pedal 15, the auxiliary device 60 is actuated to move the swing plate 51 counterclockwise through the rod 54 and the elongated hole 58 when viewed from the axis of the support shaft 50. The parking brake pedal 15 is rotated to assist the driver in depressing the parking brake pedal 15, and the driver can easily depress the parking brake pedal 15.

The left end of the rod 54 and the crank plate 62 can also be connected via an elastic member such as a spring. Thereby, the length of the rod 54 can be easily adjusted. Further, instead of the rod 54, the pin 52B and the crank plate 62 can be connected by a wire cable.

The auxiliary device 60 can be activated in synchronization with the driver's depression of the parking brake pedal 15, or after a predetermined time delay from the driver's depression of the parking brake pedal 15. Further, the state in which the parking brake pedal 15 is depressed by the driver is detected by a potentiometer 25, which will be described in detail later. The potentiometer 25 detects that the parking brake pedal 15 has been depressed deeper than the play area A1 until the left and right brake devices 37A, 37B start operating, and outputs an ON signal to the control device 65. When the pedal is not depressed and in the play area A1, the output is OFF.

When the operator depresses the parking brake pedal 15 again to release the depressed state of the parking brake pedal 15 (when the potentiometer 25 is changed from ON output to OFF output), the rotation shaft 61 of the auxiliary device 60 Rotate counterclockwise to move the rod 54 to the right via the crank plate 62. In addition, when the parking brake pedal 15 is fully depressed, its locking hook 15a automatically engages with the locking pin of the aircraft body to maintain the depressed state, and when the parking brake pedal 15 is depressed again, the locking hook 15a is locked. It is a common type that comes off the pin and is released from holding.

When the automatic brake switch 12D provided on the front panel 12 is operated and output is ON, regardless of the depression state of the parking brake pedal 15, for example, the crop discharge lever 13D is operated to the paddy discharge position. When the discharge sensor 23D outputs an ON output, the auxiliary device 60 is activated, and the rotating shaft 61 rotates clockwise to move the rod 54 to the left via the crank plate 62. As a result, the swing plate 51 rotates counterclockwise when viewed from the axis of the support shaft 50, so that the left rotating plate 45A rotates through the arm 55A and the left pin 57A when viewed from the axis of the left support shaft 43A. By rotating clockwise, the left sleeve 36A can be moved to the left along the left counter shaft 34A via the left shifter 38A. In addition, the right rotating plate 45B rotates counterclockwise in the axial view of the right support shaft 43B via the arm 55B and the right pin 57B, and the right sleeve 36B is moved to the right counter shaft 34B via the right shifter 38B. You can move it to the right along the line.

Further, when the harvest discharge lever 13D is operated from the paddy discharge position to the normal position and the discharge sensor 23D is turned OFF, and the main shift sensor 23A detects that the main shift lever 13A is operated in the neutral position. In this case, the auxiliary device 60 is activated to rotate the rotary shaft 61 counterclockwise to move the rod 54 to the right via the crank plate 62. Thereby, when the operation of the left and right brake devices 37A, 37B is released by the auxiliary device 60, it is possible to prevent the traveling device 2 from suddenly moving forward or backward.

Note that a working unit output shaft is provided on the upper side of the transmission than a portion of the transmission 31 where the drive to the left and right traveling device 2 is cut off, and the driving force is transmitted to the reaping device 3 and the threshing device 4.

Next, the detailed configuration of the parking brake pedal 15 will be explained.

The parking brake pedal 15 is rotatably supported by a cylindrical boss 72 which is welded to one side 71a of the upright side of a stay 71 that is U-shaped when viewed from the front, and has a pivot shaft 70 welded and fixed to its base. ing.

The cylindrical boss 72 is provided to protrude outward from one rising side 71a of the stay 71, and the parking brake pedal 15 is provided at the protruding end.

Therefore, by making the cylindrical boss 72 longer, the pivot shaft 70 can also be made longer, and the parking brake pedal 15 can be rotatably supported with less play. Also,
For example, when a cabin is provided in the control section 5, the cylindrical boss 72 protruding outward is a part that penetrates the cabin wall, the parking brake pedal 15 is located inside the cabin, and the stay 71 to which other members are attached is By positioning it outside the cabin, the airtightness of the cabin can be improved.

A midway portion of a rotating arm 73 is fixed to a pivot shaft 70 between one side 71a and the other side 71b of a rising U-shaped stay 71 when viewed from the front.

An actuating piece 73c is welded and fixed to the tip of the pedal-side arm part 73a extending to one side of the rotating arm 73, and a starting safety switch 74 is installed at a position opposite to the actuating piece 73c on one side 71a of the rising side of the stay 71. is fixed with screws.

When the parking brake pedal 15 is fully depressed, the operating piece 73c at the tip of the pedal side arm 73a pushes the switch piece 74a of the starting safety switch 74, and the engine starting circuit is connected and when the engine switch is turned to start, the engine starts. Start.

A pin 75a is welded and fixed to the upper part of a regulating piece 71c formed by bending a part of the upper part of one rising side 71a of the stay 71 inward at right angles, and a pin 75b is welded and fixed to the tip of the pedal side arm part 73a. A tension spring 76, which is a return spring, is provided between both pins 75a, 75b to bias the parking brake pedal 15 upwardly.

The lower surface of the regulating piece 71c comes into contact with the upper surface of the tip end of the pedal-side arm portion 73a, thereby regulating the upward movement position of the parking brake pedal 15.

An engagement pin 77 is provided at the tip of the connecting arm portion 73b extending to the other side of the rotation arm 73, and the engagement pin 77 and the pin 52A provided on the upper part of the swing plate 51 of the transmission 31 are connected to the brake pedal rod 53. It is connected with.

Therefore, when the parking brake pedal 15 is depressed, the left and right brake devices 37A and 37B of the transmission 31 are actuated as described above via the rotating arm 73 and the brake pedal rod 53, and the drive to the left and right traveling device 2 is cut off.

As described above, the potentiometer 25 for detecting the amount of depression of the parking brake pedal 15 is fixed to the other rising side surface 70b of the stay 71 with a screw.

The detection gear 25a of the potentiometer 25 meshes with a sector gear 79 fixed to the tip of an operating shaft 78 whose base is welded to the connecting arm portion 73b of the rotation arm 73 and extends toward the detection gear 25a, so that the rotation arm The potentiometer 25 detects the amount of rotation of the rotary arm 73 by rotating forward or backward according to the amount of rotation of the rotary arm 73, and detects the position where the parking brake pedal 15 is depressed.

Two through holes 71e are provided in series on the bottom surface 71d of the stay 71. The stay 71 is fastened to the floor 14 by passing bolts 80, which are fasteners, from above through the two through holes 71e. Note that the two through holes 71e are larger than the bolts 80, so that the mounting position and mounting angle of the parking brake pedal 15 can be adjusted.

Therefore, the stay 71 includes the parking brake pedal 15, the rotating arm 73, the tension spring 76 as a return spring, the regulating piece 71c that regulates the upward movement position of the parking brake pedal 15, the starting safety switch 74, the potentiometer 25, and the brake pedal rod 53. Since the brake pedal assembly 81 is made into one brake pedal assembly 81, when manufacturing or maintaining the combine harvester, the brake pedal assembly 81 is fixed to the machine body by passing bolts 80 through the two through holes 71e of the stay 71 and tightening them to the floor 14 from above. Parts related to the parking brake pedal 15 can be installed all at once with just one step, making assembly work more efficient and improving workability.

Further, after the brake pedal assembly 81 is fixed to the floor 14, the engagement hole 53a at the tip of the brake pedal rod 53 is connected to the pin 52A provided on the upper part of the swing plate 51 of the transmission 31, so that the parking brake pedal 15 can be depressed. When operated, the left and right brake devices 37A and 37B of the transmission 31 operate as described above via the rotation arm 73 and the brake pedal rod 53, and the drive to the left and right traveling device 2 is cut off.

Further, when assembling the brake pedal assembly 81, the positions of the starting safety switch 74 and the potentiometer 25 can be adjusted, so that the work can be done easily and efficiently, for example, on a workbench.

Next, since the parking brake pedal 15 also has the function of a conventional push-in pedal, it will be described in detail below.

First, the side panel 13 is provided with a mode select lever 13E as a mode select operating tool for switching between a standard field work mode, a field lodging work mode, and a road driving mode.

When the mode select lever 13E is set to the field standard work mode, the mode select lever sensor 82 provided at the base of the mode select lever 13E outputs an ON output indicating the field standard work mode to the control device 65, and the sub-shift lever 13B is set to the field standard work mode. The auxiliary speed changeover actuator 85 is set to the medium speed position, and various work controls such as automatic reaping direction control, cutting height control, and handling depth control are activated, and "field standard work mode" is displayed on the monitor 12A. Ru.

When the mode select lever 13E is set to the field lodging work mode, the mode select lever sensor 82 provided at the base of the mode select lever 13E outputs an ON output indicating the field lodging work mode to the control device 65, and the sub-shift lever 13B is switched to the sub-shift switching actuator. At step 85, the low speed position is set, and various work controls such as automatic reaping direction control, cutting height control, and handling depth control are activated, and "field lodging work mode" is displayed on the monitor 12A.

When the mode select lever 13E is set to the road driving mode, the mode select lever sensor 82 provided at the base of the mode select lever 13E outputs an OFF output indicating the road driving mode to the control device 65, and the sub-shift lever 13B is set to the sub-shift switching actuator 85. When the mower is moved to the high speed position, various work controls such as automatic reaping direction control, mowing height control, and handling depth control are stopped, and "road driving mode" is displayed on the monitor 12A.

Only when the mode select lever 13E is set to the field work mode or the field lodging work mode and the mode select lever sensor 82 outputs an ON output to the control device 65, the parking brake pedal 15 functions as a conventional raking pedal. .

That is, the potentiometer 25 detects a brake operation area A2 in which the left and right brake devices 37A, 37B are activated beyond the play area A1 when the parking brake pedal 15 is depressed, and the drive to the left and right traveling device 2 is cut off, and the control device 65 to indicate that the brake operating area is A2. Note that the A3 region is a half-brake and half-clutch region.

Then, when the parking brake pedal 15 is in the brake operation area A2 (when the potentiometer 25 is outputting that it is in the brake operation area A2), if the main shift lever 13A is operated to the forward side (the main shift sensor 23A is When the forward operation of the main shift lever 13A is detected), the forward solenoid of the hydraulic continuously variable transmission 30 is energized to drive the reaping device 3 and the threshing device 4 according to the amount of forward operation of the main shift lever 13A. This enables on-the-spot reaping work while the machine is stopped. At this time, since the parking brake pedal 15 is in the brake activation area A2, the drive to the left and right traveling devices 2 is cut off and the brakes are applied, and the combine is stopped without moving forward.

Note that even if the main shift lever 13A is operated to the reverse side when the parking brake pedal 15 is in the brake activation area A2 (the main shift sensor 23A detects the operation of the main shift lever 13A to the reverse side), the hydraulic system will not be activated. The forward solenoid and the reverse solenoid of the gear change transmission 30 are not energized, and the reaping device 3 and the threshing device 4 are not driven.

Furthermore, on the input side of the control device 65, there are provided an emergency stop switch 12C for emergency stop of engine drive, an automatic brake switch 12D for automatically operating an auxiliary device, and a main shift sensor 23A for detecting the attitude of the main shift lever 13A. , an auxiliary shift sensor 23B that detects the attitude of the auxiliary shift lever 13B, a handling sensor 23C that detects the attitude of the hand lever 13C, a discharge sensor 23D that detects the attitude of the crop discharge lever 13D, and a parking brake pedal 15. A potentiometer 25 for detecting the depressed state of the pedal, a starting safety switch 74, and a mode select lever sensor 82 are connected via a predetermined input interface circuit.

A monitor 12A, an auxiliary device 60, an engine starting circuit, and a forward solenoid and a reverse solenoid of the hydraulic continuously variable transmission 30 are connected to the output side of the control device 65 via a predetermined output interface circuit.

Next, this embodiment is characterized by the discharge operation in which the grains stored in the grain tank 7 are discharged to the outside by the discharge auger 8 by operating the crop discharge lever 13D, and will be described in detail below.

When the grain tank 7 becomes full during harvesting work with the combine, the operator temporarily stops the harvesting work and carries the combine to a harvest transport vehicle (equipped with a storage tank on the carrier) that is waiting on the ridge or road. (truck), set the main gear shift lever 13A to the neutral position, and stop the aircraft.

Then, operate the left/right rotation switch, vertical movement switch, and telescoping switch at the upper end of the grip of the harvest discharge lever 13D to align the discharge port at the tip of the discharge auger 8 with the opening at the top of the storage tank of the harvest transport vehicle, and harvest. The material discharge lever 13D is operated to a forward tilted position to drive the conveyance spiral in the discharge auger 8, and the grains stored in the grain tank 7 are discharged by the discharge auger 8 into the storage tank of the harvest transport vehicle.

At this time, the control device 65 receives an input signal from the main speed change sensor 23A indicating that the main speed change lever 13A is in the neutral position, and also receives an input signal from the main speed change sensor 23A indicating that the harvest discharge lever 13D is in the forward tilted position in the crop discharge mode. It receives an input signal from the discharge sensor 23D.

If the main gear shift lever 13A is accidentally operated from the neutral position to the forward tilted position or the rear tilted position during the discharge work (if the operator accidentally touches the main gear shift lever 13A with his/her body or operates it due to a misunderstanding on the part of the worker) If the main shift lever 13A is intentionally operated from the neutral position to the forward tilted position or the rear tilted position, the control device 65 will cause the main shift lever 13A to change to the front tilted position or the rear tilted position. It receives an input signal from the main speed change sensor 23A, and operates a discharge lever switching actuator 90, such as an electric cylinder, which switches the crop discharge lever 13D to a crop non-discharge mode in a backward tilted position. 13D is switched to the crop non-discharge mode in the rear tilted position.

Therefore, even if the main speed change lever 13A is operated from the neutral position to the front tilted position or the rear tilted position during the discharge operation, the discharge of grains by the discharge auger 8 is stopped, and grains can be prevented from spilling.

When the main gear shift lever 13A is operated from the neutral position to the front tilted position or the rear tilted position during the discharge operation, the control device 65 switches the crop discharge lever 13D to the harvest non-discharge mode of the rear tilted position. After activating the discharge lever switching actuator 90 and switching the crop discharge lever 13D to the crop non-discharge mode in the rearward tilted position, the hydraulic continuously variable transmission device is operated by operating the main shift lever 13A on the forward side or reverse side. 30 forward or reverse solenoids are energized to move forward or backward.

At that time, the control device 65 energizes the forward solenoid or the reverse solenoid of the hydraulic continuously variable transmission 30 to control the forward or reverse acceleration curve to be gentler than normal, so that the acceleration is gradually accelerated. It's safe.

In addition, when the main shift lever 13A is operated from the neutral position to the forward tilted position or the rear tilted position during the discharge operation, the control device 65 detects that the main shift lever 13A is in the forward tilted position or the rear tilted position. Receives an input signal from the main shift sensor 23A, energizes the forward solenoid or reverse solenoid of the hydraulic continuously variable transmission 30 by an amount corresponding to 50% of the forward operation amount or the reverse operation amount of the main shift lever 13A, The vehicle moves forward or backward at a speed of 50% of the amount of forward or reverse operation of the main shift lever 13A. Note that the reduction ratio for the forward operation amount or the reverse operation amount of the main shift lever 13A is not limited to 50%, but may be set to a predetermined speed depending on the model and other conditions.

Therefore, even if the main shift lever 13A is operated from the neutral position to the forward tilted position or rearward tilted position during discharge work, the discharge auger moves forward or backward at a speed slower than the forward or reverse operation amount. 8 can be prevented from coming into contact with other objects and being damaged, and is also safe.

In addition, when the discharge auger 8 is moved from the storage position to the discharge operation position by operating the left/right rotation switch, vertical movement switch, and/or telescopic switch, even if the mode select lever 13E is set to the road driving mode, the control Since the device 65 moves the sub-shift lever 13B to the middle speed position using the sub-shift changeover actuator 85 and moves forward or backward at working speed, it is possible to prevent the discharge auger 8 from coming into contact with other objects and being damaged. It's safe.

Note that when the left/right rotation switch, vertical movement switch, and/or telescopic switch are operated to move the discharge auger 8 from the storage position to the discharge operation position, the control will not work even if the mode select lever 13E is set to the road driving mode. It will be safer if the device 65 moves the sub-shift lever 13B to a low speed position using the sub-shift switching actuator 85 and moves forward or backward at a slower lodging speed.

When the ejection auger 8 is moved from the storage position to the ejection operation position, the control device 65 sounds the alarm buzzer in the control section 5 and the rear of the aircraft to notify the operator and other people in the vicinity. (An audio alarm or alarm lamp other than the alarm buzzer may be used for notification). Furthermore, when reversing, the rear buzzer sounds first.

When the discharge auger 8 is switched to the crop non-discharge mode using the control device 65, an image "Discharge has been stopped" is displayed on the monitor 12A of the control section 5.

When the main gear shift lever 13A is operated from the neutral position to the front tilted position or the rear tilted position during the above-mentioned discharge operation, the control device 65 operates the discharge lever switching actuator 90 and tilts the crop discharge lever 13D to the rear. After switching the attitude to the crop non-discharge mode, the discharge auger 8 will not change to the crop discharge mode even if the main gear shift lever 13A is set to the neutral position and the machine is stopped, and the crop discharge lever 13D will be moved to the front side again. The crop discharge mode cannot be activated unless the machine is operated in a tilted position.

Further, when the main gear shift lever 13A is operated from the neutral position to the forward tilted position or the rear tilted position during the above-mentioned discharge operation, the control device 65 operates the discharge lever switching actuator 90 to shift the harvest discharge lever 13D to the rearward position. After switching to the harvest non-discharge mode with the side tilt position, if the main shift lever 13A is in a position other than the neutral position, the control device 65 restricts the crop discharge lever 13D from being set in the forward tilt position and into the crop discharge mode. has been done.

Also, the state in which the parking brake pedal 15 is depressed during the discharge operation (the parking brake pedal 15 is depressed deeper than the play area A1 until the left and right brake devices 37A, 37B start operating is detected). (and the potentiometer 25 is outputting an ON signal to the control device 65), even if the main shift lever 13A is operated from the neutral posture to the front tilted posture or the rear tilted posture, the control device 65 will switch the ejection lever. The actuator 90 is not operated to switch the crop discharge lever 13D to the crop non-discharge mode in the backward tilted position. That is, the discharge operation continues.

When the parking brake pedal 15 is depressed and the main shift lever 13A is operated from the neutral position to the forward tilted position or the rear tilted position and the ejection work continues, the parking brake pedal 15 is depressed. When the depressing operation is released, the control device 65 operates the ejection lever switching actuator 90 to switch the crop ejection lever 13D to the crop non-ejection mode in the backward tilted position, but does not energize the forward solenoid or the reverse solenoid. The aircraft remains stationary. That is, the ejection work is stopped, but the operation of the main shift lever 13A from the neutral position to the forward inclined position or the rear inclined position is ignored. If you want to move forward or backward, first return the main shift lever 13A to the neutral position, and then operate it to the front tilted position or the rear tilted position to move forward or backward.

Although the control based on the operation of the crop discharge lever 13D has been described, the same control can be performed even if the crop discharge lever 13D is used as a crop discharge switch.

<Other embodiments>
(1) In the first embodiment, an example was shown in which the same raking control as a conventional raking switch can be performed by depressing the parking brake pedal 15, but the present invention can be applied to a combine harvester equipped with a conventional raking switch. Needless to say, it may be applied.

That is, when the conventionally known scraping switch is turned on, the aircraft comes to a stopped state. Therefore, if the scraping switch is turned ON during the ejection operation, even if the main shift lever 13A is operated from the neutral position to the front tilted position or the rear tilted position, the control device 65 will not operate the discharge lever switching actuator 90. Do not operate to switch the crop discharge lever 13D to the crop non-discharge mode in the backward tilted position. That is, the discharge operation continues.

Then, while the above-mentioned scraping switch is turned ON, the main gear shift lever 13A is operated from the neutral position to the forward tilted position or the rear tilted position, and while the discharge operation continues, the scraped switch is turned OFF. In this case, the control device 65 operates the ejection lever switching actuator 90 to switch the crop ejection lever 13D to the crop non-ejection mode in the backward tilted position, but the machine stops without energizing the forward solenoid or the reverse solenoid. Leave it as it is. Note that the drive system for the left and right traveling device 2 in the transmission 31 is in a transmission state.

That is, the ejection work is stopped, but the operation of the main shift lever 13A from the neutral position to the forward inclined position or the rear inclined position is ignored. If you want to move forward or backward, first return the main shift lever 13A to the neutral position, and then operate it to the front tilted position or the rear tilted position to move forward or backward.

1 Aircraft frame 3 Reaping device 4 Threshing device 5 Control unit 7 Grain tank 8 Discharge auger 13E Mode select operating tool (mode select lever)
15 Parking brake pedal 65 Control device

Claims (5)

A reaping device (3) is provided on the front side of the fuselage frame (1), and a threshing device (4), a control section (5), and a grain tank (7) for storing harvested products are provided behind the reaping device (3). In a combine harvester equipped with a discharge auger (8) for discharging the harvested material in the grain tank (7) to the outside of the machine,
The operation of the discharge auger (8) will be stopped if the machine is moved forward or backward during the discharge operation where the discharge auger (8) is operated to discharge the harvested material in the grain tank (7) to the outside of the machine. A combine harvester equipped with a control device (65) that
A combine harvester characterized by moving forward or backward after stopping the operation of the discharge auger (8). A claim characterized in that as long as the parking brake pedal (15) is depressed and operated during the ejection operation, the operation of the ejection auger (8) does not stop even if the aircraft is moved forward or backward. 1. The combine harvester according to 1. After the control device (65) stops the operation of the discharge auger (8) by moving the machine forward or backward during discharge work, the operation of the discharge auger (8) will remain stopped even if the machine is stopped. The combine harvester according to claim 1 or 2, characterized in that: After the control device (65) stops the operation of the discharge auger (8) by moving the machine forward or backward during the discharge operation, the operation of the discharge auger (8) is restricted unless the machine is stopped. The combine harvester according to any one of claims 1 to 3, characterized in that: When the discharge auger (8) is moved from the storage position to the discharge operation position, the control device (65) sets the auxiliary transmission to medium or low speed even if the mode select operation tool (13E) is set to road driving mode. The combine harvester according to any one of claims 1 to 4, characterized in that: