JP6708286B2 - Combine - Google Patents

Description

The present invention relates to a combine.

Conventionally, combine harvesters have a mowing clutch that switches the mowing clutch to automatically adjust the engine speed according to the switching of the mowing clutch that connects/disconnects power to the mowing section (mowing section and threshing section). There is a mechanism in which a link mechanism for interlocking a declutch lever and a throttle lever for adjusting the engine speed is provided between the two (for example, refer to Patent Document 1).

JP, 2008-199908, A

In the above-mentioned publicly known example, although the operability is improved by interlocking the mowing clutch lever and the throttle lever, it is necessary to individually operate the throttle lever in manual handling work, and there is a problem in operability.

The present application has a structure in which the throttle lever and the mowing and disengaging clutch lever are configured with a small number of parts to improve the operability while having a simple structure, and to provide a combine that can also improve the operability during manual handling work. To aim.

According to the first aspect of the invention, a threshing device (3) is provided above the machine frame (1), a mowing device (4) is provided in front of the threshing device (3), and a maneuvering device is provided behind the mowing device (4). A combiner provided with a portion (6), wherein the control section (6) is provided so as to be tiltable in the front-rear direction of the machine body about a first support shaft (16) as a fulcrum, and is tilted from the operation end side. A throttle lever (13) whose engine speed increases as it leans rearward, and a base end of the throttle lever (13) located on the opposite side of the operation end with the first support shaft (16) interposed therebetween. A pin (17) provided in a portion projecting in a direction orthogonal to the front-rear direction of the machine body, and a second support shaft (19) behind the throttle lever (13) can be tilted in the front-rear direction of the machine body as a fulcrum. The harvesting device (4) is provided and connects the power transmission to the mowing device (4) and the threshing device (3) by tilting to the front side by tilting operation from the operation end side and tilting to the rear side while tilting to the rear side. And a cutting clutch lever (14) for cutting off power transmission to the threshing device (3) and an intermediate position between the second support shaft (19) and the operating end of the cutting clutch lever (14). Is provided so as to extend toward the base end portion of the throttle lever (13) and movable in the machine front-rear direction in association with the tilting of the cutting clutch lever (14). An interlocking plate (20) having a cam surface (24) for pushing the pin (17) and located above the starting end of a feed chain (30) provided on the side of the handling chamber of the threshing device (3). An auxiliary slidable rod (31) is provided which is rotatable between the holding position and the handheld position retracted from above the starting end of the feed chain (30), and the handed position of the auxiliary sled rod (31) is provided. The combiner is characterized in that the throttle lever (13) is configured to rotate in the direction of decelerating the engine rotation speed in conjunction with the rotation of the.

A second aspect of the present invention is a combine harvester according to the first aspect, wherein the cutting clutch lever (14) is rotated in association with the rotation of the auxiliary clamping rod (31) to the manual handling position. It was done.

According to the first aspect of the invention, the throttle lever 13 can be tilted to the side for reducing the engine rotation speed in association with the retracting operation of the auxiliary pulling rod 31 from above the starting end portion of the feed chain 30. The engine rotation speed can be reduced from the rated rotation speed to a low rotation speed for manual handling work, and the threshing device 3 is driven at a safe low speed rotation for manual handling work to suppress work loss. And work efficiency can be improved.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the cutting clutch lever 14 can be rotated in conjunction with the rotation of the auxiliary slidable rod 31 to the hand-handled position. ..

The side view of a combine. The same plan view. The partial side view of a control part. The same side view. The side view of an auxiliary flap. The side view of other embodiment. Flow chart. Flow chart. Flow chart. Flow chart. Block Diagram.

An embodiment of the present invention will be described with reference to the drawings. 1 is a machine frame, 2 is a traveling device provided below the machine frame 1, and 3 is a threshing device provided above the machine frame 1. Reference numeral 4 denotes a mowing device provided in front of the machine frame 1, 5 denotes a grain tank provided at the side of the threshing device 3 for temporarily storing the grain extracted from the threshing device 3, and 6 denotes a control section. ..

The control section 6 includes a control seat 10, a front operation panel 11 in front of the control seat 10, and a side operation panel 12 on the left side of the control seat 10.

The side operation panel 12 is provided with various operation levers such as a main speed change lever (HST lever), a sub speed change lever, a throttle lever 13, and a cutting clutch lever 14.

Of these, as shown in FIG. 3, the throttle lever 13 is arranged on the front side of the side operation panel 12. The throttle lever 13 is an operation lever that is provided so as to be tiltable in the front-rear direction of the machine body and that adjusts the engine speed. The engine speed of the throttle lever 13 increases as the throttle lever 13 is tilted rearward by a tilting operation from the operation end side of the upper portion of the lever.

The cutting clutch lever 14 is arranged behind the throttle lever 13 on the side operation panel 12. The cutting clutch lever 14 is an operation lever that is provided so as to be tiltable in the front-rear direction of the machine body and that operates the cutting clutch and the threshing clutch. When the cutting lever and the threshing clutch are tilted to the rearmost side by the tilting operation from the operation end side of the lever upper part, the mowing clutch and the threshing clutch are both switched to “disengage”, and the rearward position is tilted to the front side (cutting). When the threshing clutch lever 14 itself is in a substantially upright state), the threshing clutch is switched to "connect", and when tilted to the most front side, both the threshing clutch and the reaping clutch are switched to "connect".

The harvesting clutch connects/disconnects power transmission to the harvesting device 4 of the combine 1, and the threshing clutch connects/disconnects power transmission to the threshing device 3.

Further, in the combine 1, the cutting clutch lever 14 is tilted to connect power to one or both of the harvesting device 4 and the threshing device 3, in other words, one or both of the harvesting clutch and the threshing clutch is connected. When connected, the throttle lever 13 is interlocked with the tilting operation of the mowing and disengaging clutch lever 14, and the engine speed is automatically increased.

<Lever interlocking mechanism>
The throttle lever 13 is an operation lever that is supported by the stay 15 and is tiltable in the front-rear direction of the machine body with the first support shaft 16 as a pivot.

A pin 17 is provided at the lower end of the throttle lever 13, and the pin 17 moves rearward when the throttle lever 13 is operated forward.

The cutting clutch lever 14 is an operation lever provided on the stay 18 so as to be tiltable in the front-rear direction of the machine body with the second support shaft 19 as a pivot.

Further, a rear end of the interlocking plate 20 is attached to a vertical intermediate position between the second support shaft 19 and the front end of the cutting clutch lever 14. The interlocking plate 20 is provided so as to be able to move forward and backward in association with the tilting operation of the cutting clutch lever 14. Specifically, the interlocking plate 20 is moved forward by tilting the cutting clutch lever 14 to the front side, and retracted by tilting the cutting clutch lever 14 to the rear side. Further, the interlocking plate 20 includes a cam 22 having a cam surface 24.

The cam 22 is provided at the tip of the interlocking plate 20 so as to be rotatable about a rotation shaft 23 that is orthogonal to the front-rear direction. The cam 22 is, for example, a plate cam, and the curved peripheral end surface of the plate cam serves as a cam surface 24 that pushes the pin 17.

Although not shown, a guide member that guides the forward/backward movement of the interlocking plate 20 is attached to the stay 15 that supports the throttle lever 13. In this way, by guiding the interlocking plate 20 forward and backward by the guide member, the direction in which the interlocking plate 20 operates can be changed from the tilting direction of the cutting clutch lever 14 to the front-back direction.

<Operation of lever interlocking mechanism>
The mowing clutch lever 14 before the mowing operation is in the position A where both the mowing clutch and the threshing clutch are “disengaged”. In this case, the throttle lever 13 is in a state of being tilted to the front side (engine low speed region) so as to attain a predetermined engine speed.

When the cutting and disengaging clutch lever 14 is tilted to the front side, that is, to the position B where both the mowing clutch and the threshing clutch are “connected” (hereinafter referred to as “ON operation”), with the second support shaft 19 as a fulcrum, the tilting operation is performed. The interlocking plate 20 moves forward in conjunction with. As the interlocking plate 20 moves forward, the cam 22 at the tip moves forward and the cam surface 24 pushes the pin 17 of the throttle lever 13 forward. When the pin 17 is pushed, the throttle lever 13 tilts rearward with the first support shaft 16 as a fulcrum, and the engine speed increases.

The engine speed when the cutting clutch lever 14 is turned on can be arbitrarily set. The engine speed can be set by changing the degree to which the pin 17 is pushed by the cam surface 24 and the pin 17. As a result, the push amount of the pin 17 can be adjusted, and the engine speed can be set arbitrarily.

Further, when the cutting and disengaging clutch lever 14 is tilted (hereinafter referred to as "OFF operation") so as to return to the rear side, that is, the position A where both the mowing clutch and the threshing clutch are "disengaged", the cam 22 operates as follows. The pin 17 is detached from the pin 17 while leaving the pin 17 on the front side (engine low speed region). As a result, the low engine speed range of the throttle lever 13 can be maintained.

<Sliding rod interlocking mechanism>
Then, a feed chain 30 for supplying grain culms to a handling chamber (not shown) of the threshing device 3 is provided on a side portion of the threshing device 3, and a vertically rotatable auxiliary sandwich is provided above a starting end portion of the feed chain 30. A hook 31 is provided. The auxiliary slidable rod 31 is rotatably provided between a holding position where the base portion is located above the starting end portion of the feed chain 30 by the shaft 32 and a retracted position where the base portion is retracted from above the starting end portion of the feed chain 30. The throttle lever 13 and the cutting clutch lever 14 are interlocked with each other when the position of 31 is switched.

As a result, when the auxiliary pulling rod 31 is moved to the retracted position, the throttle lever 13 is tilted to the front side, and the engine is decelerated from the rated rotation to the low speed rotation for manual handling work.

Therefore, the threshing device 3 is driven at a safe low-speed rotation for manual handling work, the occurrence of work loss is suppressed, and the work efficiency is improved.

The auxiliary pull rod 31 and the throttle lever 13 are connected by an interlocking cable 35.

As a result, when the auxiliary pulling rod 31 is retracted to the handing position, the interlocking cable 35 is pulled, the throttle lever 13 tilts forward, and the interlocking cable 35 is routed so as to perform the deceleration operation.

Therefore, when the auxiliary slidable rod 31 is in the normal working position, it does not interlock with the throttle lever 13.

In FIG. 5, the interlocking cable 35 is connected to the lower surface of the support portion 31A of the auxiliary pulling rod 31, and in FIG. 6, the interlocking cable 35 is connected to the rear surface of the support portion 31A of the auxiliary pulling rod 31.

The interlocking cable 35 is arranged in the side operation panel 12 in parallel with the operation direction of the throttle lever 13.

As a result, the space can be effectively used.

When the engine speed when the auxiliary pulling rod 31 is changed from the “normal work position” to the “handling work position” is equal to or higher than the handholding rated rotation, the throttle lever 13 is linked to the handing rated position, The pulling margin of the interlocking cable 35 is set so that the throttle lever 13 is not interlocked when the rotation speed is less than the rated hand rotation.

As a result, during manual handling work, it is possible to work at an engine speed suitable for the manual handling work.

Although illustration is omitted, when a return spring 35A is provided between the pin 17 of the throttle lever 13 and the interlocking plate 20, when the manual handling work is completed and the auxiliary sliding rod 31 is returned to its original position. Further, the interlocking plate 20 returns to the original position, and the operability can be improved.

In this case, the interlocking plate 20 may be divided into two components, and the return spring 35A may be provided between the two components.

When the throttle lever 13 is operated when the auxiliary pulling rod 31 is in the normal working position, the return spring 35A allows the throttle lever 13 to be manually operated and returned to the rated position, whereby the operability can be improved.

Further, even if the throttle lever 13 is operated when the auxiliary pulling rod 31 is in the normal working position, the auxiliary pulling rod 31 is not linked.

Further, when the interlocking cable 35 is connected to the interlocking plate 20 and is moved to the manual handling position by the retracting operation of the auxiliary slidable rod 31, the interlocking cable 35 is towed to move the interlocking plate 20 forward to move the throttle lever 13. You may make it decelerate by inclining forward.

That is, when the interlocking plate 20 is moved forward, the mowing clutch lever 14 is in a state of switching the mowing threshing clutch to “engaged”. The cutting clutch lever 14 and the throttle lever 13 can be interlocked via the plate 20.

This makes it easy to switch to the manual work.

<Monitor>
A display monitor (not shown) is provided on the front operation panel 11 of the control unit 6, and the load status of the engine (not shown) is displayed on the display monitor. This load status display has a configuration in which the load display start engine rotation speed and the load display release engine rotation speed are separated, for example, lighting start conditions (less than 2400 rpm) and lighting release cancellation (return to 2500 rpm or more) (FIG. 7). ..

As a result, the control output can be stabilized.

The operator can check the engine load early.

Reference numeral 40 is a controller, 41 is a load display lamp, and 42 is an engine rotation sensor.

The load status display is configured to be displayed (lighted) after a lapse of a predetermined time after the lighting condition is met (FIG. 8).

As a result, the load status can be displayed in a stable state.

In this case, if the predetermined time until the load status is displayed is different for the short culm/dry field and the long culm/wet field, the load status can be displayed according to the crop conditions, and the worker can recognize the display that promptly responds to control. The operation stress can be reduced.

In addition to the load status display control, when the vehicle speed sensor 45 lowers the vehicle speed at a certain value or more than the vehicle speed at which the load display is started, the outputs of the horn 46 and the load display lamp 41 are released (FIG. 9). ..

As a result, the output of the horn 46 and the load display lamp 41 is stopped during deceleration, so that the operation stress can be reduced.

Further, when the HST position sensor 47 has a sensor value lower than a certain value from the sensor value when the load display is started, the output of the horn 46 and the load display lamp 41 is released (FIG. 10).

(Operation of Embodiment)
The present invention has the above-described configuration, in which the machine is caused to travel by the traveling device 2, the grain culms in the field are mowed by the mowing device 4, and the mowed grain culms are threshed by the threshing device 3.

The side operation panel 12 of the control unit 6 is provided with a throttle lever 13 and a cutting clutch lever 14, and when the cutting clutch lever 14 is turned ON, the pin 17 is pushed by the cam surface 24 of the cam 22 to control the throttle. The lever 13 tilts to the rear side, that is, to the side that is in the high engine speed range.

Therefore, when the cutting clutch lever 14 is turned on, the engine speed automatically rises, which saves the labor of adjusting the throttle opening at the start of the cutting work (for example, the cutting work). it can.

Further, it is possible to avoid a situation where the harvesting device 4 and the threshing device 3 are operated while the engine is running at a low speed and the engine is loaded.

Thus, above the starting end of the feed chain 30 provided on the side of the handling chamber of the threshing device 3, there is a sandwiching position located above the starting end of the feed chain 30 and withdrawal from the starting end of the feed chain 30. Since the throttle lever 13 and the mowing clutch lever 14 are interlocked with each other in association with the position switching of the auxiliary slider rod 31 rotatably provided between the positions, when the auxiliary slider rod 31 is in the retracted position, The throttle lever 13 is tilted to the front side, and the engine is decelerated from the rated rotation to the low speed rotation for manual handling work.

Therefore, the threshing device 3 is driven at a safe low-speed rotation for manual handling work, the occurrence of work loss is suppressed, and the work efficiency is improved.

When the auxiliary pulling rod 31 and the throttle lever 13 are interlocked with the interlocking cable 35 and the auxiliary pulling rod 31 is retracted to the manual handling position, the interlocking cable 35 is pulled and the throttle lever 13 is tilted forward to decelerate. Since the interlocking cable 35 is routed so that when the auxiliary slidable rod 31 is in the normal working position, the interlocking cable 35 is not interlocked with the throttle lever 13.

Since the interlocking cable 35 is arranged in the side operation panel 12 in parallel with the operation direction of the throttle lever 13, the space can be effectively used.

Further, when the interlocking cable 35 is connected to the interlocking plate 20 and is moved to the manual handling position by the retracting operation of the auxiliary slidable rod 31, the interlocking cable 35 is towed to move the interlocking plate 20 forward to move the throttle lever 13. When the vehicle is tilted forward so as to perform the deceleration operation, the interlocking plate 35 is moved forward through the interlocking cable 35 by the retracting operation of the auxiliary pulling rod 31 during the manual handling work. 14 switches the mowing threshing clutch to “connect”, and tilts the throttle lever 13 forward through the interlocking plate 20 to decelerate.

Therefore, it is possible to easily switch to the manual handling work.

When the engine speed when the auxiliary pulling rod 31 is changed from the “normal work position” to the “handling work position” is equal to or higher than the handholding rated rotation, the throttle lever 13 is linked to the handing rated position, The pulling allowance of the interlocking cable 35 is set so that the throttle lever 13 is not interlocked when the rotation speed is less than the rated hand-operated speed. Become.

1 Airframe Frame 3 Threshing Device 4 Harvesting Device 6 Control Unit 13 Throttle Lever 14 Mowing/Clutch Lever 16 First Support Shaft 17 Pin 19 Second Support Shaft 20 Interlocking Plate 24 Cam Surface 30 Feed Chain 31 Auxiliary Clamping Rod

Claims (2)

A combine having a threshing device (3) provided above the machine frame (1), a mowing device (4) provided in front of the threshing device (3), and a control section (6) provided behind the mowing device (4). The control section (6) is provided so as to be tiltable in the front-rear direction of the machine body with the first support shaft (16) as a fulcrum, and the engine is rotated so as to be tilted rearward by a tilting operation from the operation end side. A throttle lever (13) whose speed increases and a base end portion of the throttle lever (13) located on the opposite side of the operation end portion with the first support shaft (16) interposed between A pin (17) provided so as to project in the orthogonal direction and a second support shaft (19) behind the throttle lever (13) are provided so as to be tiltable in the front-rear direction of the machine body from the operation end side. The forward tilting operation connects the power transmission to the mowing device (4) and the threshing device (3) by tilting to the front side, and tilts the rearward direction to power the mowing device (4) and the threshing device (3). The mowing and disengaging clutch lever (14) for disconnecting the transmission, and the throttle lever (13) mounted at an intermediate position between the second support shaft (19) and the operating end of the mowing and disengaging clutch lever (14). A cam that extends toward the base end portion of the vehicle and is movable in the machine front-rear direction in association with the tilt of the cutting clutch lever (14), and pushes the pin (17) with the forward movement. A feed chain (30), which is provided with an interlocking plate (20) having a surface (24) and is located above the starting end of a feed chain (30) provided on the side of the handling chamber of the threshing device (3). ) Is provided from above the starting end portion of the auxiliary handle rod (31) rotatable between the retracted hand handle positions, and is interlocked with the rotation of the auxiliary handle rod (31) to the hand handle position. A combine characterized in that the throttle lever (13) is configured to rotate to the side that reduces the engine speed. The combine harvester according to claim 1, wherein the cutting and disengaging clutch lever (14) rotates in association with the rotation of the auxiliary clamping rod (31) to the hand-holding position.

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