JP6941304B2 - combine - Google Patents

Description

The present invention relates to a combine equipped with a reaping device that can be raised and lowered.

Conventionally, in order to prevent plunging into a field, a technique has been known in which the cutting device is moved to an upward standby posture to stop driving the cutting device. (See Patent Document 1)

Japanese Unexamined Patent Publication No. 63-23717

However, in the conventional technique, the culm transported to the rear of the reaper in the standby position is transported to the rear of the culm by the feed chain of the driving culm, so that the culm at the rear of the reaper is transported. There was a risk that the culm would fall down as the layer thickness of the culm decreased.

Therefore, the present invention is to provide a combine with high threshing efficiency by maintaining the layer thickness of the rear culm of the cutting device in the standby posture to be more than a predetermined value to prevent the culm from falling.

The present invention which has solved the above problems Ru der following.

The invention according to claim 1 is provided with a traveling device (2) at the lower part of the machine body, a cutting device (3) for cutting grain culms at the front part of the machine body, and grains on the rear left side of the cutting device (3). In a combine harvester provided with a threshing device (4) for threshing and sorting culms and a control unit (5) on the rear right side of the cutting device (3).
When the lifting operation tool (9) of the control unit (5) is operated to raise the cutting device (3) to the set height or more to enter the standby posture, and the elapsed time of the standby posture exceeds the set time. Stops the rotation of the feed chain (18) that conveys the culm of the threshing device (4), then stops the drive of the cutting device (3), and the elapsed time of the standby posture is less than the set time. In this case, the feed chain (18) that conveys the culm of the threshing device (4) when the speed change lever (5A) of the control unit (5) moves the traveling device (2) to a position to move backward. The combine is characterized in that the drive of the cutting device (3) is stopped after the rotation of the harvester is stopped.

According to a second aspect of the invention, the setting time is combined according to claim 1, wherein can be arbitrarily set by time switch (5D) of said steering unit (5).

According to the invention of claim 1 , the elevating operation tool (9) of the control unit (5) is operated to raise the cutting device (3) to a set height or more to be in a standby posture, and the elapsed time of the standby posture is set. When the set time is exceeded, the rotation of the feed chain (18) for transporting the culm of the threshing device (4) is stopped, the drive of the cutting device (3) is stopped, and the elapsed time of the standby posture is stopped. If is less than the set time, the feed chain that conveys the culm of the threshing device (4) when the speed change lever (5A) of the control unit (5) moves the traveling device (2) to the reverse position. Since the drive of the cutting device (3) is stopped after the rotation of the cutting device (18) is stopped, the layer thickness of the grain culm conveyed to the rear part of the cutting device (3) is maintained above a predetermined level and the grain culm is maintained. It is possible to prevent the culm from falling and improve the threshing efficiency.

According to the invention of claim 2 , in addition to the effect of the invention of claim 1 , the set time can be arbitrarily set by the time switch (5D) of the control unit (5), so that the state of the grain culm in the field The optimum set time can be set according to the traveling speed of the traveling device (2) and the traveling device (2).

It is a left side view of the combine. It is a transmission diagram of the output rotation of the engine. It is explanatory drawing of the cutting clutch. It is a connection diagram of a controller. This is the first driving method of the reaping device. This is the second driving method of the reaping device.

As shown in FIG. 1, the combine is provided with a traveling device 2 composed of a pair of left and right crawlers traveling on the soil surface under the body frame 1, and a cutting device for cutting culms in a field on the front side of the body frame 1. 3 is provided, a threshing device 4 for threshing and sorting the harvested culms is provided on the rear left side of the harvesting device 3, and a control unit 5 on which the operator is boarded is provided on the rear right side of the harvesting device 3. ..

A grain tank 7 for storing threshed and sorted grains is provided on the rear side of the control section 5, and a grain frying section extending in the vertical direction and front and rear of the grain tank 7 for discharging grains to the outside are provided on the rear side of the grain tank 7. A discharge auger 8 including a lateral discharge portion extending in the direction is provided.

The traveling device 2 can be operated by the speed change lever 5A provided on the side panel portion of the control unit 5. When the speed change lever 5A is set to the neutral position, the traveling device 2 stops. When the traveling device 2 is tilted forward from the neutral posture, the traveling device 2 moves forward, and the forward speed is increased as the angle tilted forward from the neutral posture increases. When the traveling device 2 is tilted backward from the neutral posture, the traveling device 2 moves backward, and the reverse speed is increased as the angle tilted backward from the neutral posture increases.

A raising device 3A for raising the grain culm in the field is provided in the front part of the cutting device 3, and a cutting blade device 3B for cutting the root of the grain culm is provided on the lower rear side of the raising device 3A. At the rear of the 3, a supply device 3C for taking over the grain culm to the threshing device 4 is provided.

The cutting device 3 is supported by a transmission case 30 extending from the upper part of the transmission TM to the lower front side. The rear portion of the transmission case 30 is rotatably connected to the upper part of the transmission TM, and the elevating cylinder 32 is connected to the intermediate portion of the transmission case 30. As a result, the elevating cylinder 32 can be expanded and contracted to swing the front portion of the transmission case 30 in the vertical direction around the rear portion of the transmission case 30 to raise and lower the cutting device 3 in the vertical direction.

The raising and lowering of the cutting device 3 is operated by the front and rear lifting switches 5B that are turned on and off by the forward and backward tilting operation of the steering lever (“elevating operation tool” in the claim) 9 provided on the front panel portion of the control unit 5. Can be done. For example, in the case of rotating the combine, when the steering lever 9 is tilted backward to turn on the rear lift switch 5B, the lift cylinder 32 is extended and driven to move the front part of the transmission case 30 to the rear part. The reaping device 3 is raised by a predetermined height by swinging upward as a center. When the cutting device 3 is located at a standby position raised by a predetermined height, the driving of the raising device 3A, the cutting blade device 3B, and the supply device 3C is stopped. As a result, it is possible to prevent the lower end portion of the raising device 3A from plunging into the field and reduce the load on the engine E.

Further, when the steering lever 9 is tilted forward to turn on the elevating switch 5B on the front side, the elevating cylinder 32 is shortened and driven to swing the front part of the transmission case 30 downward with the rear part as the center for cutting. Lower the device 3. When the cutting device 3 is located at the lowered working position, the raising device 3A, the cutting blade device 3B, and the supply device 3C are driven.

At the rear of the transmission case 30, an angle sensor 31 such as a potentiometer for measuring the swing angle of the transmission case 30 is provided. Thereby, it is possible to determine whether the cutting device 3 is located at the standby position or the working position.

(Transmission diagram of engine output rotation)
As shown in FIG. 2, the output rotation of the engine E is transmitted to the wall insert shaft 10 that supports the wall insert of the threshing device 4 via a pulley and a belt.

The rotation transmitted to the wall insert shaft 10 is transmitted to the swing shaft 14 that supports the swing shelf of the threshing device 4 via the pulley and the belt 11. A tension clutch 12 is provided on the belt 11.

The tension arm 12 is formed of a tension arm 12A that tensions and relaxes the tension of the belt 11 and a motor 12B that rotates the tension arm 12A, similarly to the tension clutch 28 described later. When the motor 12B is turned on, the roll of the tension arm 12A is moved in the direction of the belt 11 to tension the tension of the belt 11. As a result, the tension clutch is connected, and the rotation transmitted to the wall insert shaft 10 can be transmitted to the swing shaft 14 via the belt 11.

On the other hand, when the motor 12B is turned off, the roll of the tension arm 12 is moved in the opposite direction of the belt 11 to relax the tension of the belt 11. As a result, the connection of the tension clutch is released, and the rotation transmitted to the wall insert shaft 10 cannot be transmitted to the swing shaft 14 via the belt 11.

The rotation transmitted to the swing shaft 14 is transmitted to the feed chain shaft 16 that supports the feed chain 18 that conveys the culm of the threshing device 4 via the gear. Instead of the tension clutch 12, a claw clutch (not shown) may be used in the middle portion of the feed chain shaft 16 to switch the transmission to the feed chain 18.

The output rotation of the engine E is transmitted to the input shaft 20 of the traveling HST 22 via the pulley and the belt. HST is an abbreviation for a hydraulic continuously variable transmission.

The rotation transmitted to the input shaft 20 is transmitted to the transmission TM after the rotation direction is switched and the rotation speed is accelerated or decelerated in the traveling HST 22.

The rotation transmitted to the transmission TM is output to the first output shaft 24 and the second output shaft 26 of the transmission TM after the rotation direction is switched and the rotation speed is accelerated or decelerated in the transmission TM.

The rotation output to the first output shaft 24 is transmitted to the traveling device 2, and the rotation output to the second output shaft 26 is transmitted to the cutting device 3 via the pulley and the belt 27. As shown in FIG. 3, the belt 27 is provided with a tension clutch 28.

The tension clutch 28 is formed of a tension arm 28A that tensions and relaxes the tension of the belt 27, and a motor 28B that rotates the tension arm 28A. When the motor 28B is turned on, the roll of the tension arm 28A is moved in the direction of the belt 27 to tension the tension of the belt 27. As a result, the tension clutch 28 is connected, and the rotation output to the second output shaft 26 can be transmitted to the cutting device 3 via the belt 27.

On the other hand, when the motor 28B is turned off, the roll of the tension arm 28A is moved in the opposite direction of the belt 27 to relax the tension of the belt 27. As a result, the connection of the tension clutch 28 is released, and the rotation output to the second output shaft 26 cannot be transmitted to the cutting device 3 via the belt 27.

The rotation transmitted to the cutting device 3 is transmitted to the raising device 3A, the cutting blade device 3B, and the supply device 3C.

The driving of the cutting device 3 and the threshing device 4 can be operated by the cutting lever 5C provided behind the speed change lever 5A of the side panel portion of the control unit 5. When the cutting lever 5C is tilted forward, the cutting device 3 and the threshing device 4 are driven, and when the cutting lever 5C is tilted backward, the cutting device 3 and the threshing device 4 are stopped. That is, when the cutting / removing lever 5C is tilted forward, the tension clutch 12 and the tension clutch 28 are connected to drive the cutting device 3 and the threshing device 4, and when the cutting / removing lever 5C is tilted backward, the tension clutch 12 and the tension clutch The connection of 28 is released, and the driving of the harvesting device 3 and the threshing device 4 is stopped.

(Controller connection diagram)
As shown in FIG. 4, the controller 35 has a built-in timer 35A. Thereby, for example, the time for which the output signal is continuously output can be measured.

On the input side of the controller 35, a speed change lever 5A for operating the traveling of the traveling device 2, a front / rear elevating switch 5B for operating the steering lever 9 for operating the elevating and lowering of the mowing device 3, and a mowing device 3 are provided. A cutting lever 5C that operates the drive of the grain removal device 4, a timer sensor 5D that sets the operating time of the timer 35A, and an angle sensor that measures the elevating position of the cutting device 3, that is, whether it is in the standby position or the working position. 31 are connected via a predetermined input interface circuit.

On the output side of the controller 35, there are an elevating cylinder 32 that swings the transmission case 30 of the cutting device 3 in the vertical direction, and a tension arm provided on a belt 11 wound around a pulley of the wall insert shaft 10 and the swing shaft 14. A motor 12B for operating the 12A and a motor 28B for operating the tension arm 28A provided on the belt 27 wound around the pulley of the second output shaft 26 and the cutting device 3 are connected via a predetermined output interface circuit. There is.

(First driving method of reaping device)
As shown in FIG. 5, in step S1, the controller 35 determines whether or not the cutting lever 5C is tilted forward, and if it is determined that the cutting lever 5C is tilted forward, the step If the process proceeds to S2 and it is determined that the cutting / removing lever 5C is tilted to the rear side, step S1 is repeated. When the cutting / removing lever 5C is tilted forward, the cutting device 3 is in the lowering working position, and the raising device 3A, the cutting blade device 3B, and the supply device 3C of the cutting device 3 are driven. The feed chain 18 of the threshing device 4 is also rotating.

In step S2, the controller 35 tilts the steering lever 9 backward to determine whether or not the rear elevating switch 5B is input and turned on, and the elevating switch 5B is input and turned ON. If it is determined that the position is set to, the process proceeds to step S3, and if it is determined that the lift switch 5B on the rear side is input and the switch is not turned on, the process returns to step S1.

In step S3, the controller 35 drives the elevating cylinder 32 to raise the reaping device 3 and proceed to step S4.

In step S4, the controller 35 determines whether or not the measurement angle of the angle sensor 31 is equal to or greater than a predetermined angle and the cutting device 3 is in the standby posture, and determines that the cutting device 3 is in the standby posture. If it is determined, the process proceeds to step S5, and if it is determined that the cutting device 3 is not in the standby position, the process returns to step S3.

In step S5, the controller 35 activates the timer 35A built in the controller 35 and proceeds to step S6.

In step S6, the controller 35 determines whether or not the shift lever 5A is tilted rearward from the neutral posture, and if it is determined that the shift lever 5A is tilted rearward from the neutral posture, the step S6. If it is determined that the speed change lever 5A is not tilted rearward from the neutral position after proceeding to S7, the process proceeds to step S8. When the speed change lever 5A is tilted backward from the neutral position, the traveling device 2 is moving backward.

In step S7, the controller 35 rotates the motor 28B to retract the tension arm 28A from the belt 27, that is, relaxes the tension of the belt 27, disengages the tension clutch 28, and returns to step S1. As a result, the drive of the cutting device 3 can be stopped to reduce the load on the engine E.

In step S8, the controller 35 determines whether or not the operating time of the timer 35A has elapsed by the set time or more, and if it determines that the operating time of the timer 35A has elapsed by the set time or more, for example, 5 to 7 seconds, If the process proceeds to step S9 and it is determined that the operating time of the timer 35A has not elapsed, the step S8 is repeated.

The set time can be set by an external controller (not shown) such as a time switch 5D or a tablet provided on the side panel of the control unit 5. As a result, the set time can be changed according to the traveling speed of the traveling device 2 and the state of the grain culm planted in the field.

In step S9, the controller 35 rotates the motor 28B to retract the tension arm 28A from the belt 27, that is, relaxes the tension of the belt 27, disengages the tension clutch 28, and returns to step S1. As a result, the drive of the cutting device 3 is stopped, the thickness of the grain culm conveyed on the supply device 3C at the rear of the cutting device 3 is maintained at a predetermined value or more, and the grain culm is prevented from falling from the supply device 3C. In addition, it is possible to prevent clogging at the front portion of the feed chain 18 and improve the threshing performance.

(Second driving method of reaping device)
As shown in FIG. 6, since steps S1 to S5 of the second driving method of the cutting device are the same as steps S1 to S5 of the first driving method, the description thereof will be omitted.

In step S6, the controller 35 determines whether or not the speed change lever 5A is tilted rearward from the neutral posture, and if it is determined that the speed change lever 5A is tilted rearward from the neutral posture, the step S6. If it is determined that the speed change lever 5A is not tilted rearward from the neutral position after proceeding to S7, the process proceeds to step S9.

In step S7, the controller 35 rotates the motor 12B to retract the tension arm 12A from the belt 11, that is, relaxes the tension of the belt 11 to release the connection of the tension clutch 12, and proceeds to step S8. As a result, the rotation of the feed chain 18 of the threshing device 4 is stopped, and the takeover of the culm from the supply device 3C of the cutting device 3 is stopped, so that the culm is conveyed on the supply device 3C at the rear of the cutting device 3. It is possible to maintain the thickness of the grain culm to a predetermined value or more and prevent the grain culm from falling from the supply device 3C.

In step S8, the controller 35 rotates the motor 28B to retract the tension arm 28A from the belt 27, that is, relaxes the tension of the belt 27, disengages the tension clutch 28, and returns to step S1. As a result, the drive of the cutting device 3 can be stopped to reduce the load on the engine E.

In step S9, the controller 35 determines whether or not the operating time of the timer 35A has elapsed by the set time or more, and if it determines that the operating time of the timer 35A has elapsed by the set time or more, for example, 5 to 7 seconds, If the process proceeds to step S10 and it is determined that the operating time of the timer 35A has not elapsed, the step S9 is repeated.

In step S10, the controller 35 rotates the motor 12B to retract the tension arm 12A from the belt 11, that is, relaxes the tension of the belt 11, disengages the tension clutch 12, and proceeds to step S11. As a result, the rotation of the feed chain 18 of the threshing device 4 is stopped, and the takeover of the culm from the supply device 3C of the cutting device 3 is stopped, so that the culm is conveyed on the supply device 3C at the rear of the cutting device 3. It is possible to maintain the thickness of the grain culm to a predetermined value or more and prevent the grain culm from falling from the supply device 3C.

In step S11, the controller 35 rotates the motor 28B to retract the tension arm 28A from the belt 27, that is, relaxes the tension of the belt 27, disengages the tension clutch 28, and returns to step S1. As a result, the drive of the reaping device 3 is stopped, the thickness of the culm being conveyed on the supply device 3C at the rear of the reaping device 3 is maintained at a predetermined value or more, and the culm is further dropped from the supply device 3C. It is possible to prevent the feed chain 18 from being clogged at the front portion and further improve the threshing performance.

(others)
The throttle valves provided on the upstream side of the left push cylinder that operates the left brake of the traveling device 2 and the upstream side of the right push cylinder that operates the right brake are provided on the downstream side of the left and right push cylinders, respectively. As a result, the left and right push cylinders can be operated quickly, and the turning performance of the traveling device 2 can be improved.

2 Traveling device 3 Cutting device 4 Threshing device 5 Control unit 5A Shift lever 5D Time switch 9 Steering lever (elevating operation tool)
18 feed chain

Claims (2)

A traveling device (2) is provided at the lower part of the machine body, a harvesting device (3) for cutting the grain culm is provided at the front part of the machine body, and a threshing device (3) for threshing and sorting the grain culm on the rear left side of the cutting device (3). In a combine harvester provided with 4) and a control unit (5) on the rear right side of the cutting device (3).
By operating the elevating operation tool (9) of the control unit (5), the cutting device (3) is raised above the set height to enter the standby posture.
When the elapsed time of the standby posture exceeds the set time, the rotation of the feed chain (18) that conveys the culm of the threshing device (4) is stopped, and then the cutting device (3) is driven. Stop and
When the elapsed time of the standby posture is less than the set time, the threshing device (4) is moved to a position where the speed change lever (5A) of the control unit (5) moves the traveling device (2) backward. The combine is characterized in that the drive of the cutting device (3) is stopped after the rotation of the feed chain (18) for transporting the grain culm is stopped. The set time, combine of claim 1, wherein can be arbitrarily set by time switch (5D) of said steering unit (5).

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