JPH11239411A - Controlling device for feed chain driving - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a feed chain of a combine harvester set to be capable of automatically driving and stopping, matching to normal operation and hand- feeding operation. SOLUTION: This device is constructed to have a detecting mean detecting the neutral and rear position of the main gear lever 5, an on-off controlling mean for the feed chain driving clutch, and placing the hand-feeding operation switch at the neighborhood of the drivers seat and neighborhood of the feed chain 20, linking each with the controlling circuit, setting the feed chain 20 to drive independent from the position of the main gear lever 5 when the hand- feeding switch is on, and setting the feed chain to stop when the hand-feeding switch is off and the main gear 5 is on the neutral or rear position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for easily changing the drive / stop of a feed chain in a combine according to the operation.

[0002]

2. Description of the Related Art In a conventional combine, a harvesting operation can be performed by setting a threshing clutch lever to "ON" and further setting a mowing clutch lever to "ON", the feed chain is driven, and the mowing clutch lever is set to "OFF". ", The mowing device and the feed chain are stopped. When the main transmission lever is shifted from forward to neutral or reverse with the threshing clutch lever and the reaping clutch lever in the "on" state, the reaper is stopped.

[0003]

With such a conventional construction, when performing manual handling, the main shifting lever is shifted to neutral, and then the threshing clutch lever and the mowing clutch lever are set to "on", and the mowing device is operated. Was stopped, but the reaper was driven when moving forward a little, so it was very dangerous.When the main transmission lever was switched to neutral or reverse during work, the reaper was operated. However, since the feed chain continued to rotate, the posture of the culm was disturbed at the entrance of threshing, resulting in unhandled or wrapped wounds, resulting in poor succession. Therefore,
The reaping clutch lever is turned to "off", but this backward movement is performed at the time of reversing, so that the operability is deteriorated since the main shifting lever is replaced with the reaping clutch lever. Therefore, the feed chain may be stopped in conjunction with the switching of the main shift lever to neutral or reverse, but manual operation becomes impossible.

[0004]

SUMMARY OF THE INVENTION In order to solve such problems, the present invention has means for detecting neutral and reverse of a main shift lever, and means for turning on / off a feed chain drive clutch. A hand switch is arranged, the detection means, the ON / OFF means, and the hand switch are connected to a control circuit. When the hand switch is turned on, the feed chain is driven regardless of the position of the main shift lever. The feed chain is configured to stop the feed chain when the main shift lever is neutral or reverse.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems to be solved and means to be solved by the present invention are as described above. Next, the embodiment shown in the attached drawings will be described. FIG. 1 is an overall side view of a combine, and FIG. 3 is a plan view, FIG. 3 is a side view of the main transmission lever, FIG. 4 is a plan view of the same, FIG. 5 is a side view of a feed chain clutch portion, FIG. 6 is a plan view of the same, and FIG. 8 is a control circuit diagram, FIG. 9 is a drive skeleton diagram, and FIG. 10 is a control flowchart.

1 and 2, a description will be given of the overall structure of the combine. A fuselage frame 2 is mounted on a crawler-type traveling device 1, and a reaper C is disposed in front of the fuselage frame 2. In the device C, the weeding plate 6 is protruded from the front end of the mowing frame 3, and a raising case 4 is erected at the rear of the cutting frame 3. A chain having a tine is wound around the raising case 4 to rotate. It causes lodging grain culms. A scraping device, an upper transport device and a lower transport device are disposed at the rear of the raising case 4, and a cutting blade 9 is laid horizontally on the cutting frame 3 below the scraping device to cut the root of the grain stalk and transport it. It is transported backward by the device.

[0007] The root of the grain culm conveyed by the conveying device is sandwiched by a feed chain 20, the tip side is threshed by a handling cylinder 19 in a threshing room, and the culm is sent out of the machine by a straw chain 15. It is discharged. The grains and the like after threshing are sorted out, the fines are stored in a Glen tank 17 on the side of the threshing room, and the straw waste and the like are discharged outside the machine, and the Glen tank 17 is removed.
The paddy inside can be loaded on a truck or the like by the discharge auger 18.

A driver's seat 16 is disposed in front of the Glen tank 17, and an engine E and a transmission case 26 are disposed below the driver's seat 16. As shown in FIG. Power is transmitted to the transmission case 26 through the transmission case 26,
The internal hydraulic transmission is shifted by the operation of the main transmission lever 5 so that the crawler traveling device 1 and the one-way clutch C
Power is transmitted to the reaper C via L3, and the handle 1 is transmitted from the output shaft of the engine E via the threshing clutch CL2.
The power is transmitted to the conveyor 9, the straw processing device and the feed chain 20.

An operation column 12 is provided at the front of the driver's seat 16.
A one-lever type steering lever 13 protrudes from the operation column 12, and a side column 22 is erected on the side of the seat 10, and the main transmission lever 5 and the sub transmission lever are provided on the side column 22. 23, a threshing clutch lever 7, a mowing clutch lever 8, a hand-operated switch 25, and the like are provided.

As shown in FIGS. 3 and 4, the main speed change lever 5 is connected to a lever guide 22 on the side column 22.
and a connecting rod protruding upward from the inside of the main transmission lever 5 for pivotally supporting the pivot base 5a of the main transmission lever 5 on a shaft 30 via a link ball, and connecting the pivot base 5a to a transmission shaft of a hydraulic transmission. One end of the switch 32 is pivotally connected, and a contact piece 31a of the switch 31 is disposed at the end of a shaft 32a that supports the connecting rod 32 so as to be able to abut. Therefore, when the main shift lever 5 is turned to the neutral or reverse position, the switch 31 is turned on.
You do it. A hand switch 25 is provided on the side column 22, and a hand switch 24 is provided near the feed chain 20.

A drive transmitting portion D of the feed chain 20 is provided at a rear portion of the feed chain 20, and the drive transmitting portion D of FIG.
As shown in the figure, the belt 42 wound around the pulley for driving the first conveyor or the second conveyor is wound around the pulley 44 on the drive shaft 43, and the gears 48.5 in the gear case 45 are provided.
0 and the like, and transmitted to a gear 49 loosely fitted to the feed chain drive shaft 47. The shaft 46 is for driving the dust exhaust fan 41, and a sprocket 34 around which the feed chain 20 is wound is fixedly provided at an end of the feed chain drive shaft 47. A spline-fitted sliding body 51 is externally fitted on the center of the feed chain driving shaft 47, and a clutch claw 51a is formed at one end of the sliding body 51. The clutch claw 51a faces the gear 49 in opposition to the clutch claw 51a. A feed chain clutch CL1 is formed by forming a clutch claw 49a, and the sliding body is urged by a spring 52 in a clutch engagement direction, so that a cam groove 53 is formed on the sliding body 51, and a pin 54 is formed. Can be inserted into the cam groove 53. When the cam groove 53 rotates with the pin 54 inserted, the groove is cut in a direction in which the sliding body 51 is separated from the clutch claw 49a. Is configured to be cut off. Switches 33a and 33b are provided to detect the positions of the pins 54 in the on (in a state where the pins 54 are separated from the sliding body 51) and in the off (in a state where the pins 54 are inserted into the cam grooves 53). ing.

At the other end of the pin 54, as shown in FIG.
One end of the bell crank arm 55 is pivotally supported, the center of the bell crank arm 55 is pivotally supported by a shaft 56, and the other end is connected with a connecting arm 57 and a spring 58.
The other end is pivotally supported in the middle of an arm 59, the arm is rotatable around a shaft 60, and the deceleration case 62 is
The deceleration case 62 is connected to an output shaft of a motor M, and the rotation arm 61 is rotated by driving the motor M.
Arm 59, connecting arm 57, bell crank arm 55
The pin 54 can be slid in the insertion / removal direction via the pin. However, as shown in FIG.
5 ′ is connected to a solenoid 63 via a wire 64, and the solenoid
Can be inserted and removed.

The thus-arranged hand-operated switch 24
25, switches 31, switches 33a and 33b, motor M (solenoid 63), and lamps 65 and 66 which are turned on when the manual switches 24 and 25 are turned on, are connected to the control circuit 67 as shown in FIG.

In such a configuration, control is performed as shown in the flowchart of FIG. That is, reaping
When the threshing operation is performed, the threshing clutch lever 7 and the reaping clutch lever 8 are turned to the "in" side, the manual switches 24 and 25 are turned off, the lamps 65 and 66 are turned off, and the main speed change lever is turned off. When 5 is rotated to the forward position,
When both the reaper C and the feed chain 20 are driven, and the main transmission lever 5 is shifted to neutral or reverse, the reaper C is stopped, and if the position of the pin 54 is not on the "off" side (the off-side switch 33b is turned off). The motor M is driven to the "off" side until the off-side switch 33b is turned on, and the clutch CL1 of the feed chain 20 is turned off.
It stops as F. Then, when the culm at the corner or the like is manually handled, the manual switch 24,
Alternatively, the hand-operated switch 25 is turned on, and the lamp 65 or 66 of the switch is turned on so that the operator can know it. Next, if the position of the pin 54 is not on the “in” side (when the input switch 33a is off) ) The motor M is driven to the “in” side and driven until the input switch 33a is turned on to drive the feed chain 20.

As shown in FIG. 11, the main shift lever 5 is biased forward by a spring 36, and a switch 37 is provided at the neutral position on the reverse side so that the main shift lever is moved to the neutral position on the forward side. Then, the mowing device is stopped, and the feed chain 20 can be stopped when the switch 37 is turned to the reverse neutral position where the switch 37 is turned on. The work can be performed at the position, and the feed chain can be intentionally stopped at the time of circulating or the like.

[0016]

As described above, the present invention has the following advantages. That is, when the manual operation switch is turned on when performing the manual operation, the feed chain can be driven irrespective of the rotation of the main shift lever by setting the threshing clutch lever to “on”, and the mowing device is stopped. Work can be performed in the state, and, at the time of work, when the main shift lever is switched to neutral or reverse, both the reaping device and the feed chain also stop, and at the entrance of threshing, the culm posture is not disturbed In addition, the operation of the reaping clutch lever is no longer necessary, and the operation can be performed safely and easily.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a main speed change lever.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of a feed chain clutch unit.

FIG. 6 is a plan view of the same.

FIG. 7 is a side view showing another embodiment.

FIG. 8 is a control circuit diagram.

FIG. 9 is a drive skeleton diagram.

FIG. 10 is a control flowchart.

FIG. 11 is a plan view of a lever guide portion showing another embodiment of the hand-operated switch.

[Explanation of symbols]

 C Harvester M Motor 5 Main gear lever 24/25 Hand-operated switch 31 Switch 67 Control circuit

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[Procedure amendment]

[Submission date] February 8, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Feed chain drive control device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for easily changing a drive / stop of a feed chain in a combine according to an operation.

[0002]

2. Description of the Related Art In a conventional combine, a harvesting operation can be performed by setting a threshing clutch lever to "ON" and further setting a mowing clutch lever to "ON", a feed chain is driven, and the mowing clutch lever is operated. When "off", the mowing device and the feed chain are stopped. When the main transmission lever is shifted from forward to neutral or reverse with the threshing clutch lever and the reaping clutch lever in the "on" state, the reaper is stopped.

[0003]

With such a conventional structure, when performing a manual operation, the main transmission lever is shifted to neutral, and then the threshing clutch lever and the reaping clutch lever are set to "on". He was working with the reaper stopped. However, when the aircraft is slightly advanced, the reaper is driven, which is very dangerous.In operation, when the main shift lever is switched to neutral or reverse, the reaper stops, but the feed chain rotates. In order to continue, the posture of the culm was disturbed at the entrance of threshing, resulting in unhandled portions and wrapping, resulting in poor succession. Therefore, the reaping clutch lever is turned to "OFF". However, since the reverse is performed at the time of rotation, the operability is deteriorated because the main shifting lever is switched to the reaping clutch lever. Therefore, the feed chain may be stopped in conjunction with the switching of the main shift lever to neutral or reverse, but manual operation becomes impossible.

[0004]

The present invention addresses such problems.
The point is eliminated, and the configuration is as follows. Claim
Item 1 is the threshing clutch lever 7 of the combine
The mowing clutch lever 8 is on the "in" side and the main
Harvesting when bar 5 is shifted to neutral or reverse
In the configuration in which the device is stopped, the
Means for detecting the neutral and the reverse, a control circuit 67,
Hand to turn ON / OFF the feed chain clutch CL1
When the main shift lever 5 is in neutral or reverse
In addition, the feed chain clutch CL1
7 to the motor M or solenoid 63
It is configured to stop the feed chain 20 more
is there.

[0005] In claim 2, threshing of the combine
When the latch lever 7 and the reaping clutch lever 8 are in the "in" side
The main shift lever 5 shifts to neutral or reverse
In the configuration in which the mowing device is stopped when the
Means for detecting neutral and reverse of the speed lever 5;
The control circuit 67 and the feed chain clutch CL1
N / OFF means, main shift lever 5
At the time of ral or reverse, the feed chain clutch CL1
Is controlled by the signal from the control circuit 67,
The pin 54 is operated by the solenoid 63,
And disengage the clutch claws and remove the feed chain 20
It is configured to stop.

[0006] In claim 3, threshing of the combine
When the latch lever 7 and the reaping clutch lever 8 are in the "in" side
The main shift lever 5 shifts to neutral or reverse
In the configuration in which the mowing device is stopped when the
Means for detecting neutral and reverse of the speed lever 5;
Hand to turn ON / OFF the feed chain clutch CL1
With a step, and a separate hand-operated switch 24,
Detecting means for detecting neutral and reverse of the speed lever 5
And hand on / off the feed chain clutch CL1
The step and the hand-operated switch 24 are connected to the control circuit 67,
When the handling switch 24 is turned on,
The feed chain 20 is driven to
The control circuit activates the manual alarm lamp 65 that lights up when
67.

[0007] In claim 4, threshing of the combine
When the latch lever 7 and the reaping clutch lever 8 are in the "in" side
The main shift lever 5 shifts to neutral or reverse
In the configuration in which the mowing device is stopped when the
Means for detecting neutral and reverse of the speed lever 5;
Hand to turn ON / OFF the feed chain clutch CL1
With a step, and a separate hand-operated switch 24,
Detecting means for detecting neutral and reverse of the speed lever 5
And hand on / off the feed chain clutch CL1
The step and the hand-operated switch 24 are connected to the control circuit 67,
When the handling switch 24 is turned on,
In response to a signal from the control circuit 67, the motor M or
The pin 54 is operated by the solenoid 63,
The feed chain 20 by engaging the clutch claws.
Manual operation that lights when the manual operation switch 24 is turned on.
The alarm lamp 65 is connected to a control circuit 67.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems to be solved and means to be solved by the present invention are as described above. Next, embodiments shown in the accompanying drawings will be described. 1 is an overall side view of the combine, FIG. 2 is a plan view of the same, FIG. 3 is a side view of a main shift lever,
4 is a plan view, FIG. 5 is a side view of a feed chain clutch unit, FIG. 6 is a plan view of the same, FIG. 7 is a side view of another embodiment, FIG. 8 is a control circuit diagram, and FIG. 9 is a drive skeleton diagram. FIG. 10 is a control flowchart.

1 and 2, the overall structure of the combine will be described. The body frame 2 is mounted on the crawler traveling device 1, and a reaper C is disposed in front of the body frame 2. In the mowing device C, the weeding plate 6 is protruded from the front end of the mowing frame 3, and a raising case 4 is provided at the rear of the mowing frame 3. A chain having a tine protruding around the raising case 4 is rotated. This causes lodging grain culms. At the rear of the raising case 4, a scraping device, an upper transport device and a lower transport device are arranged, and a cutting blade 9 is provided laterally on the cutting frame 3 below the scraping device to cut the root of the grain stalk. , And is transported backward by the transport device.

[0010] The root of the grain culm conveyed by the conveying device is sandwiched by a feed chain 20, the tip side is threshed by a handling cylinder 19 in a threshing room, and the culm is sent out of the machine by a straw chain 15. It is discharged. The grains and the like after threshing are sorted out, the fines are stored in a Glen tank 17 on the side of the threshing room, and the straw waste and the like are discharged outside the machine, and the Glen tank 17 is removed.
The paddy inside can be loaded on a truck or the like by the discharge auger 18.

A driver's seat 16 is disposed in front of the Glen tank 17 and an engine E is provided below the driver's seat 16.
The transmission is transmitted from the engine E to the transmission case 26 via the main clutch CL0, as shown in FIG. The hydraulic transmission in the transmission case 26 is shifted by the operation of the main transmission lever 5, and power is transmitted to the reaper C via the crawler traveling device 1 and the one-way clutch CL3. In addition, threshing clutch CL from the output shaft of engine E
The power is transmitted to the handling cylinder 19, the conveyor, the straw processing device, and the feed chain 20 via the control unit 2.

An operation column 12 is provided in front of the driver's seat 16.
A one-lever type steering lever 13 protrudes from the operation column 12, and a side column 22 is erected on the side of the seat 10, and the main transmission lever 5 and the sub transmission lever are provided on the side column 22. 23, a threshing clutch lever 7, a mowing clutch lever 8, a hand-operated switch 25, and the like are provided.

As shown in FIGS. 3 and 4, the main speed change lever 5 is connected to a lever guide 22 on the side column 22.
It protrudes upward from inside a. A pivot base 5a of the main transmission lever 5 is pivotally supported on a shaft 30 via a link ball, and the pivot base 5a is pivotally connected to one end of a connecting rod 32 which is coupled to a transmission shaft of a hydraulic transmission. , The connecting rod 32
The contact piece 31a of the switch 31 is
Are provided so as to be able to abut. Therefore, the main shift lever 5
Is turned to the neutral or reverse position to switch 31
Turns ON. A hand switch 25 is provided on the side column 22, and a hand switch 24 is provided near the feed chain 20.

A drive transmitting portion D of the feed chain 20 is provided at a rear portion of the feed chain 20, and as shown in FIG. 6, a belt wound around a pulley for driving the first or second conveyor. 42 is wound around a pulley 44 on a drive shaft 43, and a gear 48 in a gear case 45 is
And transmitted to the gear 49 loosely fitted to the feed chain drive shaft 47 via 50 or the like. The shaft 46 is for driving the dust exhaust fan 41, and the feed chain drive shaft 47
A sprocket 34 around which the feed chain 20 is wound is fixedly mounted at the end of the sprocket.

A spline-fitted sliding body 51 is fitted over the center of the feed chain drive shaft 47. A clutch claw 51a is formed at one end of the sliding body 51, a clutch claw 49a is formed on the gear 49 so as to face the clutch claw 51a, and a feed chain clutch CL1 is formed. Urged in the clutch engagement direction.

A cam groove 53 is formed on the sliding member 51 so that a pin 54 can be inserted into the cam groove 53. When the cam groove 53 rotates with the pin 54 inserted, the sliding member 5 is rotated.
1 is grooved in the direction away from the clutch claws 49a,
The power transmission is cut off when the pin 54 is inserted. Then, the position where the pin 54 is inserted (in a state where the pin 54 is separated from the sliding body 51) and the cut position (the pin 54
Switches 33a and 33b for detecting the respective positions are provided at the position (inserted into position 3).

As shown in FIG. 5, one end of a bell crank arm 55 is pivotally supported at the other end of the pin 54. The center of the bell crank arm 55 is pivotally supported by a shaft 56, and is connected to the other end. The arm 57 and the spring 58 are connected. The other end of the connecting arm 57 is pivotally supported in the middle of the arm 59,
The arm is rotatable about a shaft 60, and the end is pivotally supported by a rotating arm 61 protruding from a reduction case 62.

The deceleration case 62 is connected to the output shaft of the motor M, and drives the motor M to rotate the rotating arm 61, so that the arm 59 and the connecting arm 5
7. The pin 54 can be slid in the insertion / removal direction via the bell crank arm 55. However, as shown in FIG. 7, it is also possible to connect the bell crank arm 55 'to the solenoid 63 via a wire 64 and drive the solenoid 63 to insert and remove the pin 54.

The thus-arranged hand-operated switch 24
25, the switch 31, the switches 33a and 33b, the motor M or the solenoid 63, and the manual alarm lamps 65 and 66 which are turned on when the manual switches 24 and 25 are turned on, are connected to the control circuit 67 as shown in FIG. ing. In such a configuration, control is performed as in the flowchart shown in FIG. That is, when performing the harvesting and threshing work, the threshing clutch lever 7 and the reaping clutch lever 8 are turned to the “in” side, and the manual switches 24 and 25 are turned off.
F, the hand-operated warning lamps 65 and 66 are turned off.

When the main shift lever 5 is rotated to the forward position in this state, both the reaper C and the feed chain 20 are driven, and when the main shift lever 5 is shifted to neutral or reverse, the reaper C is driven. When the motor M is stopped and the position of the pin 54 is not on the "off" side (when the off-side switch 33b is OFF), the motor M is driven to the "off" side and
The drive is performed until b is turned on, and the clutch CL1 of the feed chain 20 is turned off and stopped.

When the culm at the corner or the like is manually handled, the manual switch 24 or the manual switch 25 is turned on, and the manual alarm lamp 65 of the switch is turned on.
Or 66 lights up so that the operator can understand it. Then, if the position of the pin 54 is not on the "in" side (when the on-side switch 33a is off), the motor M is driven to the "on" side to turn on the on-side switch. It drives until the 33a is turned on to drive the feed chain 20.

Incidentally, as shown in FIG.
Is biased forward by a spring 36, a switch 37 is provided at a neutral position on the reverse side, and the main transmission lever is stopped at the neutral position on the forward side to stop the reaper, and the switch 37 is turned on. It is possible to stop the feed chain 20 when it is rotated to the neutral position on the reverse side. During manual handling, the feed chain 20 can be operated at the forward neutral position and the forward position. The chain can be stopped.

[0023]

As described above, the present invention has the following advantages. It is configured as in claim 1.
Therefore, when working, set the main shift lever to neutral.
Or switch to reverse to get both the reaper and feed chain
It will stop and the culm posture at the entrance of threshing
No need to operate the harvesting clutch lever without disturbing
Operation became safe and easy to operate.
You. The feed chain clutch CL1 according to claim 2.
Is operated by the motor M or the solenoid 63 to
To disengage the clutch pawl with the pin 54.
Because the feed chain 20 is configured to stop,
With a simple structure but with a certain delay time,
He was able to release the clutch. Claim
Since it was configured as in Item 3, when performing manual work,
When the switch is turned on, the threshing clutch lever is turned on.
The feed chain regardless of the rotation of the main shift lever.
The mowing device can be stopped.
It was possible to work in a state. As in claim 4
Operation of the feed chain clutch CL1
-M and the pin 63 are operated by the solenoid 63,
54, the clutch pawl is engaged, and the feed chain 2
0 so that it can be driven with a simple structure.
It is not possible to operate the clutch after a delay time.
I came.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a main speed change lever.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of a feed chain clutch unit.

FIG. 6 is a plan view of the same.

FIG. 7 is a side view showing another embodiment.

FIG. 8 is a control circuit diagram.

FIG. 9 is a drive skeleton diagram.

FIG. 10 is a control flowchart.

FIG. 11 is a plan view of a lever guide portion showing another embodiment of the hand-operated switch.

[Description of Signs] C reaper M motor 5 main shift lever 24/25 hand-operated switch 31 switch 67 control circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsuneo Sugimura 1-32 Chayacho, Kita-ku, Osaka, Osaka Inside Yanmar Agricultural Machinery Co., Ltd. No. Inside Yanmar Agricultural Machinery Co., Ltd.

Claims (2)

[Claims] In a configuration in which the threshing clutch lever and the reaping clutch lever of the combine are on the "in" side and the reaper is stopped when the main transmission is shifted to neutral or reverse, neutral and reverse of the main transmission lever are detected. To turn on the feed chain drive clutch
A feed chain drive control device having means for turning off, and configured to stop the feed chain when the main shift lever is in neutral or in reverse. 2. In a configuration in which the threshing clutch lever and the reaping clutch lever of the combine are on the "in" side and the reaper is stopped when the main transmission is shifted to neutral or reverse, the neutral and reverse of the main transmission lever are detected. To turn on the feed chain drive clutch
・ Having means for turning off, arranging a hand-operated switch, connecting the detection means, ON / OFF means and hand-operated switch to a control circuit, and turning on the feed chain when the hand-operated switch is turned on irrespective of the position of the main transmission lever. A feed chain drive control device configured to be driven.