JPH11289851A - Engaging and disengaging controller for the thresher clutch in combined harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely attain hand-feeding threshing by feeding cereal stems reaped by hand to the threshing unit in the combined harvester. SOLUTION: While the individual drivings of usual reaping and threshing operations are automatically made on and off at the operation part in the driving zone, the reaping pretreatment unit is stopped, while the combined harvester stops running. When a manually vertically turning lever 91 is turned downward once to restore the spring horizontally that is set integrally to the cover on the side of the feed chain, the self-contained type switch 92 is maintained on. By this On signal, the controller 70 makes both of the threshing clutch 48a, and the grain-flowing clutch on, while the reaping clutch 49 is made off whereby the power transmission is discontinued to the reaping pretreatment unit. When the feed chain is emergently stopped driving, the hand lever 91 is turned downward again to restore the self-contained switch 92 off, whereby the threshing clutch 48a is made OFF by the controller 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine, and more particularly, to a structure of a disconnection control device of a threshing clutch in a combine for safely performing threshing work of a hand-cut grain culm.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-open No.
In Japanese Patent Publication No. 0, when the operator is not on the driving section of the combine, the operator is normally depressed by the grip portion of the operation lever gripped by the driving section so that the combine does not accidentally start moving. There is known a switch provided with a switch that detects the change and turns off the clutch to the traveling crawler.

It has also been known that an emergency switch for emergency stop of the engine in the event of an accident is installed in a place away from the operating section of the traveling body of the combine.

[0004]

However, since the grain stalks planted on the headlands (corners) of the field cannot be cut by running the combine, an operator manually cuts the culms. Store the cut stalks. Then, drive the threshing unit of the combine that stopped running,
An operator manually supplies the harvested culm to the starting end of the feed chain, and performs a so-called hand-handling operation of threshing the culm, which is nipped and conveyed by the feed chain, with a handle cylinder.

[0005] In this case, since the operator is stepping down from the driving unit or is located at a location where it is difficult for the operator to get on the driving unit to see the operator, the operator's hand is pinched by the feed chain. Or, if an accident such as grain clogging occurs, for example, even if the emergency switch is disposed near the handling section and the switch is pressed to stop the engine urgently, Due to inertia, the feed chain and the handling cylinder continue to rotate for a while, so that there is a problem that it takes time to process after the occurrence of the accident.

An object of the present invention is to solve this problem, and an object of the present invention is to provide a combine threshing clutch disconnection control device capable of performing safe handling work.

[0007]

Therefore, the invention according to claim 1 is provided with a pre-cutting device at a front portion of a traveling body equipped with an engine, and the traveling body is transported from the pre-cutting device. A feed chain for pinching and transporting grain culms
A threshing unit comprising a handling cylinder for threshing the grain at the tip of the grain culm conveyed by the feed chain, a cutting clutch and a threshing clutch for disconnecting power from the engine to the pre-cutting device and the threshing unit, respectively. And a control operation unit for turning on and off the mowing clutch and threshing clutch is arranged in the operating unit of the combine, while an engine emergency is disposed on the outer surface of the machine frame of the traveling machine on the feed chain side. It is provided with a stop switch and a manual lever for turning on and off the threshing clutch.

[0008] The invention described in claim 2 is the first invention.
In the control device for disconnecting a threshing clutch in a combine described in (1), the manual lever is associated with a self-holding switch that switches the threshing clutch between an ON state and an OFF state each time the lever is rotated. And
According to a third aspect of the invention, in the disconnection control device for the threshing clutch in the combine according to the first or second aspect, when the engine emergency stop switch is ON and the threshing clutch by the manual lever is OFF, It is configured to operate an emergency alarm device that generates an alarm.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. FIG. 1 is a side view of a traveling body 1 of a combine having a pair of right and left traveling devices 2 provided with traveling crawlers 2a. FIG. 2 is a plan view of the traveling body 1, and FIG.
Is a skeleton diagram of power transmission, and FIG. 4 is a functional block diagram of a threshing clutch ON / OFF control device using a manual lever.

A threshing device 3 is mounted on the left side in the traveling direction of the traveling machine body 1, and a mowing pre-processing device 4 which can be moved up and down by a single-acting hydraulic cylinder 9 is arranged at the front of the traveling machine body 1. . A clipper-type cutting blade device 5 is arranged on the lower side of the lower frame of the pre-cutting device 4, and a grain stem raising device 6 for six rows is arranged in front of the cutting frame device. The culm conveying device 8 is arranged between the culm raising device 6 and the herbaceous body 10 protruding from the lower front of the cereal culm raising device 6. A driver's cab 11 having a seat and an operation unit therein is disposed at a front right portion of the traveling machine body 1, and a grain tank 12 is disposed at a rear side thereof.

The middle part of the vertically downwardly inclined lifting / lowering cylinder frame 14 having the front end mounted on the cutting pretreatment device 4 and the traveling body 1
The lifting pre-processing device 8 is driven up and down by an elevating hydraulic cylinder 9 mounted between the elevating and lowering hydraulic cylinder 9, and a power transmission shaft from an engine 35 on the traveling machine body 1 is built in the elevating and lowering cylinder frame 14. Power is transmitted to each part of the pre-cutting device 4.

As shown in a skeleton diagram (FIG. 3) showing the power transmission system of the combine, one of the outputs from the engine 35 is supplied to the grain tank 12 via a grain tank clutch 36.
Power to the bottom conveyor 37 and the vertical conveyor 38 in the
Then, it is transmitted to a screw conveyor (not shown) in the discharge auger 28. Other outputs from the engine 35 are transmitted via a power branching mission 39 to a handle drum drive shaft 40, a selection drive shaft 41, and a hydraulic pump hydraulic motor (HST) for traveling.
Power is transmitted to a drive shaft 43 to the traveling drive unit 42 and a constant-speed rotation drive shaft 44 to the pre-cutting device 4. And
The other output from the engine 35 is supplied to the power transmission ON / OFF via the threshing clutch 48a in the power branching mission 39.
Execute OFF, and handle cylinder drive shaft 40 or sorting drive shaft 41
Through the handling cylinder 13 and the processing cylinder 29, the screw conveyor 26a of the first trough, the fan conveyor Kara Min, the screw conveyor 26b of the second trough and the second reduction conveyor 25, the straw chain 31, and the straw chain 31 integrated therewith. Rotatable spike tip side transfer tine 80, suction fan 30, and straw cutter 3
3 is transmitted.

On the other hand, from the (HST-type) traveling drive unit 42, the cutting and tuning drive shaft 45 is output via a one-way clutch 45a (which can be transmitted only when the traveling drive unit is rotating forward) and a vehicle speed tuning clutch 46. 47 and directly to the feed chain 7. Also, the reaping shaft 4
7 through a cutting clutch 49 provided in the cutting device 4
It is configured to turn on / off the power transmission to the motor. Turn ON the threshing clutch 48a, the vehicle speed tuning clutch 46, the pouring clutch 48, and the reaping clutch 49, respectively.
To perform FF operation, turn on / off clutch actuators such as electromagnetic solenoids corresponding to each clutch.
It is configured to work. Note that the vehicle speed tuning clutch 46 may be a tension clutch that cuts off the power by tensioning and relaxing the belt tension. Therefore, for example, when the vehicle speed tuning control is prohibited (canceled), the power is transmitted to the cutting shaft 47 via the constant speed rotation driving shaft 44 of the power branching mission 39, and the cutting synchronization drive output from the HST traveling drive unit 42. When the rotation speed of the shaft 45 is lower than the rotation speed from the constant speed rotation drive shaft 44,
When 5 rotates in the backward direction of the combine, the one-way clutch 45a idles.

When a normal harvesting and threshing operation is performed while the traveling machine body 1 is traveling forward (in the low-speed operation mode and in the standard operation mode), the inflow clutch 48 in the power branching mission 39 is turned off (power interruption). Then, the threshing clutch 48a, the vehicle speed tuning clutch 46, and the mowing clutch 49 are turned on (power connection), and while monitoring the detection values of the fuel injection amount sensor and the vehicle speed sensor, the traveling drive unit 4
The cutting pre-processing device 4 and the feed chain 7 are driven in synchronism by driving the cutting shaft 47 via the cutting synchronizing drive shaft 45 of the number of revolutions tuned to the output of 2, while the handle drum drive shaft 40 and the sorting drive shaft 41 are driven. When driven, the handling cylinder 11, the processing cylinder 29,
The fan 20, the fan 19, and the swing sorting mechanism 15 are driven.

Further, when the traveling machine is to be turned or retreated during the harvesting and threshing work in the field, when the traveling machine 1 is stopped or retracted, and when the drive of the pre-cutting device 4 and the feed chain 7 is stopped. Then, the vehicle speed tuning clutch 46 and the inflow clutch 48 are turned off. To drive only the feed chain 7, the cutting clutch 49 is turned off. In this case, power is not transmitted to the pre-cutting device 4, but is transmitted only from the power branching mission 39 to the feed chain 7 via the cutting shaft 47.

When the traveling body is turned after the completion of one stroke of cutting in the field, the cutting pre-processing device 4
When the rising height reaches a predetermined value, the vehicle speed tuning clutch 46, the mowing clutch 49 and the pouring clutch 48 are both turned off, and the cutting blade device 5, the grain stalk raising device 6 and the grain stalk conveying device 8 are usually turned off. The power to the feed chain 7 is turned off. However, after finishing one stroke cutting in the field, the traveling body is turned and the next cutting step is started, and the cut culm of the last cutting step of the previous one stroke is removed from the field. When it is desired to convey from the portion of the culm conveying device 8 of the pre-cutting device 4 that has been raised to a higher position to the position of the feed chain 7, the vehicle speed tuning clutch 46 is turned off, the cutting clutch 49 and the pouring clutch 48 Are set to ON so that the harvested culm located in the cereal culm conveying device 8 or the like is sent to the threshing device 3.

The HST type (in which a mechanical transmission mechanism is incorporated in a stepless transmission mechanism using two hydraulic motors and two hydraulic pumps) adjusts the swash plate of each hydraulic pump and the like of the traveling drive unit 42 to reduce the vehicle speed. Main shift lever 85 for step shifting
As shown in FIGS. 4 and 5, the front and rear rotation is performed by the side operation portion of the seat 11 a in the driver's cab 11, and when the front is tilted forward with respect to the neutral position (stop position) in a substantially vertical posture, The vehicle speed increases as the inclination angle with respect to the vertical increases. When the vehicle is tilted backward, the vehicle retreats, and the vehicle speed increases as the angle of inclination increases.

A sub-transmission lever 86, which is also disposed on the side operation portion of the seat 11a, controls an actuator such as a transmission motor for operating a mechanical transmission mechanism (not shown) provided in the HST traveling drive unit 42. When the sub-transmission lever 86 is switched to each of the road traveling mode, the standard operation mode, and the low-speed operation mode, the microcomputer-based control unit (controller unit) 70 mounted on the combine unit issues a command. The output (horsepower) and the number of revolutions of the traveling drive unit 42 adapted in the work mode can be set and maintained in a predetermined range.

An ultrasonic sensor 20 as a cutting height sensor for detecting a cutting height by detecting a ground height between the cutting pre-processing device 4 and a field scene is provided on the back side of the grain stem raising device 6. The transmitter (horn) of the transmitter and the receiver of the receiver in the ultrasonic sensor 20 are disposed so as to face the field scene, as shown in FIG. When the installation height of the ultrasonic sensor 20 and the installation height of the cutting blade 5 are different, the detection value of the cutting height is obtained by a predetermined conversion from the detection value of the ultrasonic sensor 20.

FIG. 6 shows a functional block diagram of a control device 70 for executing the cutting height control and the automatic clutch control. The control device 70 is an electronic control device such as a microcomputer, which is not shown. A central processing unit (CPU) for executing various arithmetic processes and controls, a read-only memory (ROM) storing a control program, and a read-write memory (RAM) for temporarily storing various detection values, data, and the like ), A nonvolatile memory for holding stored data even when the power of the control device is turned off, a clock as a timer function, an interface, a bus, and the like.

A cutting height setting device (not shown), a manual switch 76 of a three-position detection type for performing the cutting and threshing operation in the manual mode, and an automatic switch for similarly setting the cutting and threshing operation to the automatic control mode. Further, when the manual operation is performed, the operator steps on and turns ON / O in order to change the lifting amount and / or the lifting speed of the pre-cutting device 4 to a smaller side.
Each signal of the foot switch 74 for performing the FF operation is also input to the control device 70, respectively. The operation lever 76a of the manual switch 76 can be tilted back and forth and is urged to automatically return to the neutral position. While the operation lever 76a is tilted forward, the operation lever 76a continues to descend at a predetermined elevating speed V1 and tilts backward. During this period, the ascent and descent are continued at the predetermined elevating speed V1.

In the manual mode, the fine adjustment switching means for finely raising and lowering the raising and lowering speed of the pre-cutting device 4 at the fine speed V2 lower than the predetermined speed V1 includes ON / OFF of a foot switch. The petal 87 is provided with a seat 11a as shown in FIGS.
Projecting upward from the floorboard below the left front side. In addition,
A pouring petal 88 for turning on / off the pouring clutch 48 is disposed so as to protrude from a floor plate below the round handle 89.

As shown in FIG. 1, the handling cylinder 13 of the threshing device 3
The handle body cover body 3a covering the upper surface and the side surfaces of the body can be turned upward by an open handle 90 provided on the outer surface thereof,
At the front and rear longitudinal edges of the lower end of the handling cylinder cover 3a, a clamping rod for clamping the grain culm is disposed on the upper surface side of the feed chain 7, and when the handling cylinder cover 3a is opened upward, the clamping rod is also moved to the feed chain 7. Is configured to be away from the upper surface of the.

On the outer surface of the body cover 3a, an emergency manual lever 91 mounted vertically is provided in association with a self-holding switch 92.
The threshing clutch 48a is controlled to be turned ON or OFF via the control device 70 in accordance with the ON signal and the OFF signal. Further, a push button switch 9 for emergency stop of the engine 35 is provided on the outer surface of the body cover 3a.
3 is provided.

More specifically, when the manual lever 91 which normally returns to a substantially horizontal spring is rotated once downward, the pressing piece 91a of the manual lever 91 presses the self-holding switch 92 once. Then, the self-holding switch 92 is held in the ON state, and the ON signal is input to the control device 70. Thereby, the threshing clutch 48a and the pouring clutch 48 are ON, and the reaping clutch 49 is OFF.
Thus, the power transmission to the pre-cutting device 4 is cut off, but the power is transmitted to the threshing device 3 and the feed chain 7. In this state, the operator or the operator who has landed on the field performs a so-called hand-handling operation of inserting the stalks cut by hand into the front end side of the feed chain 7 and threshing with the hand drum 13.

During this manual operation, when it is desired to stop the operation of the feed chain 7 urgently due to the foreign object such as a worker's glove being caught in the feed chain 7, conventionally, the emergency stop push button switch 93 is used. Is pressed to stop the engine 35 urgently. However, in the present invention, when the manual lever 91 is rotated downward again, the self-holding type switch 92 returns from the ON state to the OFF state,
The OFF signal is input to the control device 70 to turn off the threshing clutch 48a. Although the engine 35 is driven by this control, the power transmission to the threshing device 3 and the feed chain 7 is quickly shut off, so that the rotation of these parts is immediately stopped, and the removal of foreign matter can be easily executed. When the self-holding switch 92 is turned off, it is preferable to activate an alarm device 94 such as a buzzer or a lamp so that another person can be notified of an emergency (or abnormal situation). In this way, the operator starts power harvesting by transmitting power to the pre-cutting device 4 while the power transmission to the threshing device 3 and the feed chain 7 is cut off (while the self-holding switch 92 is not returned to ON). It is easy to notice inconvenience.

When the self-holding switch 92 is in the OFF state and the manual lever 91 is once again turned downward, the switch 92 can return to the ON state. By arranging the manual lever 91 and the push button switch 93 for engine emergency stop close to each other, it is possible to quickly cope with an emergency. Next, the straw discharge mechanism shown in FIGS. 7 and 8 will be described.

The waste spike tip side transfer tine 80, which receives power from the rear end of the straw chain 31 disposed close to the rear end of the feed chain 7, is parallel to the straw chain 31 and rises at the lower side. A guide rod 95 for supporting the straw spike tip side is further arranged substantially parallel to the lower side of the straw spike tip side transport tine 80. At this time, the guide rod 95 is arranged so as to be located above the tip (lower end) of each downward tine 80a and below the root in a side view. Further, the tip end of the guide rod 95 is inclined downward toward the rear end of the feed chain 7. As a result, the tip side of the waste straw 96 discharged from the rear end of the feed chain 7 is securely connected to the guide rod 95.
, And the discharge of the straw by the spout tip side transfer tine 80 is ensured, and the spout side of the spout does not slide on the upper surface of the No. 4 gutter. Inconveniences such as sweeping out particles can be prevented.

Referring to another embodiment of the power transmission shown in FIG. 9, one of the outputs from the engine 35 is transmitted to the bottom conveyor 37 and the vertical conveyor 38 in the grain tank 12 via the clutch 36, and then to the power transmission. It is transmitted to a screw conveyor (not shown) in the discharge auger 28. Engine 35
The other output from the motor is transmitted via a power branching mission 39 to a handling cylinder drive shaft 40, a sorting drive shaft 41, and a drive shaft 4 to a traveling hydraulic pump hydraulic motor type (HST type) traveling drive unit 42.
The power is transmitted to a constant-speed rotation drive shaft 44 to the pre-cutting device 3 and the mowing pre-processing device 4. In this case, in the power branching mission 39, a mowing clutch 49 and a threshing clutch 48 are provided, and ON / OFF of power transmission from the engine 35 is executed via the threshing clutch 48, and the handle cylinder drive shaft 40 and The handling cylinder 13 and the processing cylinder 29, the blowing fan 21a, the Karaoke fan 21b, the swing sorting mechanism 21c, the screw conveyor 26a of the first trough, the Karin fan, the screw conveyor 26b of the second trough via the sorting drive shaft 41, and The second reduction conveyor 25, the waste chain 31, the suction fan 30, the straw cutter 33, and the transmission to the rear end of the feed chain 7 via the FC clutch 7a.

On the other hand, the shaft (HST) is output from a shaft output via a cutting clutch 49 in the power splitting mission 39.
Expression) A one-way clutch 45a for vehicle speed tuning (which can be transmitted only at the time of normal rotation of the traveling drive unit), a belt, and a pulley of the harvesting synchronization drive shaft 45 output from the traveling drive unit 42 are connected to the harvesting shaft 47. Power is being transmitted. In addition,
The structure of the one-way clutch 45 a is
5 is faster than the rotation speed of the constant speed rotation drive shaft 44, the output of the cutting and tuning drive shaft 45 is transmitted to the cutting shaft 47, and if the rotation speed of the constant speed rotation drive shaft 44 is faster, The output from the constant speed rotary drive shaft 44 is
7 is transmitted.

Accordingly, when the vehicle speed tuning control is prohibited (stopped) or the like, the power is transmitted to the reaping shaft 47 via the constant speed rotary drive shaft 44 of the power branching mission 39 and output from the HST type traveling drive unit 42. When the rotation speed of the cutting tuning drive shaft 45 is lower than the rotation speed from the constant speed rotation driving shaft 44, or when the cutting tuning drive shaft 45 rotates in the backward direction of the combine, the constant speed is set via the one-way clutch 45a. Power is transmitted from the rotation drive shaft 44 to the mowing shaft 47.

In this case, the safety clutch 4 of the reaping section is used.
Reference numeral 6 is provided as a tension clutch that cuts off the power by tensioning and relaxing the tension of the belt. The ON / OFF operation of the threshing clutch 48, the mowing clutch 49, and the FC clutch 7a is performed by turning on / off a clutch actuator such as an electromagnetic solenoid corresponding to each clutch by a command from the control device 70.
It is configured to work.

Therefore, when a normal harvesting and threshing operation is performed while the traveling body 1 is traveling forward (in the standard operation mode), the threshing clutch 48 and the reaping clutch 49 in the power branching mission 39 are ON (power connection). , And the FC clutch 7a is also ON, and while monitoring the detection values of the fuel injection amount sensor and the vehicle speed sensor, the harvesting tuning drive shaft 4 of the number of revolutions tuned to the output of the traveling drive unit 42.
5, the cutting shaft 47 is driven to tune and drive the pre-cutting device 4, while the handling cylinder drive shaft 40 and the sorting drive shaft 41 are driven.
To drive the feed chain 7, the handling cylinder 11, and the processing cylinder 2.
9, the blower fan 21a, the Karaoke fan 21b, the swing sorting mechanism 21c, and the like are driven at a constant speed.

In this configuration, in the cutting and threshing operation in the field, in the automatic clutch control, when the pre-cutting device 4 is lowered to a predetermined cutting height, the cutting clutch 49 is automatically turned on, while the pre-cutting device 4 is raised to a predetermined height higher than the predetermined cutting height, the cutting clutch 49 is automatically turned off. Further, when the cutting pre-processing device 4 is raised by a cutting height adjusting lever or an auto lift button (attached to the grip portion of the main transmission lever 85), the drive of the cutting pre-processing device 4 is stopped, and the feed chain 7 is stopped. The drive stops. Conversely, when the cutting pre-processing device 4 is lowered by the cutting height adjusting lever or the auto lift button, the driving of the cutting pre-processing device 4 and the feed chain 7 is started.

In the course of cutting and threshing work in a field, when the traveling body is turned or the like, the one-way clutch 45a is used even if the traveling body 1 is stopped or retracted.
, The output of the cutting and tuning drive shaft 45 is not transmitted to the cutting pretreatment device 4 side. In that case, the pre-cutting device 4
When the mowing pre-processing device 4 is raised to a predetermined height or more from the mowing height by the automatic clutch control, the mowing clutch 4
9 is turned off, and the driving of the pre-cutting device 4 and the feed chain 7 is stopped. In addition, the operator of the working machine manually
Even when the C clutch 7a is turned off, the rotation of the feed chain 7 stops.

[0036]

As described above, according to the first aspect of the present invention, the pre-cutting device is provided at the front of the traveling body equipped with the engine, and the traveling body is transported from the pre-cutting device. A threshing unit comprising a feed chain for pinching and conveying the culm to be fed and a handling cylinder for threshing the grain at the tip of the cereal spike conveyed by the feed chain; In a combine equipped with a cutting clutch and a threshing clutch for cutting off, a control operation unit for turning on and off the cutting clutch and the threshing clutch is arranged in an operating unit of the combine, while The outer surface of the machine frame on the feed chain side is equipped with an engine emergency stop switch and a manual lever for turning on and off the threshing clutch. When the operator gets off the machine and manually feeds the cereal stalk to the feed chain and performs a manual operation, the threshing clutch can be turned ON / OFF by operating a manual lever provided on the outer surface of the machine frame on the feed chain side. It is not necessary to move to the location of the driving unit one by one, and in addition to the emergency stop when foreign objects such as operator's gloves are caught in the feed chain, the engine emergency stop and the threshing clutch OFF As a result, the drive of the threshing unit can be immediately stopped, so that it is possible to work quickly and safely.

Further, the invention described in claim 2 is the same as that in claim 1
In the control device for disconnecting a threshing clutch in a combine described in the above, the manual lever is associated with a self-holding type switch that switches the threshing clutch between an ON state and an OFF state every time the rotation operation is performed. In addition, the steady position of the manual lever (the state where the operator is not touching) is always in the same posture, and the operator can easily operate. Further, if the manual lever is formed longitudinally along the direction in which the feed chain extends, there is an effect that an operator can easily reach in an emergency and the operation becomes easy.

According to a third aspect of the present invention, there is provided the disconnection control device for a threshing clutch in a combine according to the first or second aspect, wherein the threshing by the manual lever is performed when the engine emergency stop switch is ON. When the clutch is turned off, an emergency alarm device that generates an alarm is operated. Therefore, when the self-holding type switch is turned off, an alarm device such as a buzzer or a lamp can be operated to notify another person of an emergency (or abnormal situation), thereby improving safety. When the self-holding switch is in the OFF state,
While the power transmission to the threshing unit is in a cutoff state (without returning the self-holding switch to ON), the operator transmits power to the pre-cutting device and starts cutting, causing grain culm clogging at the front end side of the feed chain. This has the effect of making it easy to notice inconveniences.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a plan view of the combine.

FIG. 3 is a skeleton diagram of a power transmission system.

FIG. 4 is a plan view of a driving unit.

FIG. 5 is a side view of the driving unit.

FIG. 6 is a functional block diagram of a manual lever and an ON / OFF control device for a threshing clutch.

FIG. 7 is a schematic plan view of a straw conveying section.

FIG. 8 is a schematic side view of a straw conveying section.

FIG. 9 is a skeleton diagram of another embodiment of the power transmission system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 traveling body 4 cutting pretreatment device 9 lifting hydraulic cylinder 48 a threshing clutch 48 pouring clutch 49 cutting clutch 70 control device 91 manual lever 92 self-holding switch 93 engine emergency stop push button switch 94 alarm device 80 hydraulic switching valve 88 depressed petal

Claims (3)

[Claims] A cutting machine is provided at a front portion of a traveling body equipped with an engine. The traveling body includes a feed chain for holding and transporting a grain stalk conveyed from the cutting pre-processing apparatus, and a feed chain conveyed by the feed chain. A threshing unit consisting of a handling cylinder for threshing the grain at the tip of the grain stalk, and a combine having a cutting pretreatment device from an engine and a cutting clutch and a threshing clutch for transferring power to the threshing unit, respectively. In the operating unit of the combine, a control operation unit for turning on and off the mowing clutch and threshing clutch is disposed, while an engine emergency stop switch is provided on the outer surface of the machine frame on the feed chain side of the traveling machine,
A disconnection control device for a threshing clutch in a combine, comprising a manual lever for turning on and off the threshing clutch. 2. The combine as claimed in claim 1, wherein the manual lever is associated with a self-holding switch that switches the threshing clutch between an ON state and an OFF state every time the manual lever is turned. Threshing clutch disconnection control device. 3. The engine emergency stop switch is turned on.
3. The disconnection control device for a threshing clutch in a combine according to claim 1, wherein an emergency warning device that generates an alarm is activated when the threshing clutch is turned off by the manual lever. 4. .