JP2024081309A - Harvesting Machine - Google Patents

Abstract

To provide a harvester which quickly operates a position, height, and rotation speed of a raking reel to be suitable for laid-down crops.SOLUTION: An artificially operable setting operation tool is provided. A control part 73 is provided in which, when the setting operation tool is operated, a raking reel 11 is moved to a preset setting front/rear position C1 by a position changing actuator 25, the raking reel 11 is moved to a preset setting height C2 by a height changing actuator 26, and the raking reel 11 changes a rotation speed to a preset setting speed by a rotation speed changing actuator 37.SELECTED DRAWING: Figure 8

Description

The present invention relates to the configuration of the harvesting section of a harvester.

A general-purpose combine harvester, which is an example of a harvester, is disclosed in Patent Document 1.
In the reaper, a raking reel is provided in the cutting section, which is driven to rotate about an axis extending in the left-right direction to rake in crops in a field toward the rear.

In Patent Document 1, the operator in the driver's compartment operates the reel forward/backward adjustment switch to change the position of the raking reel relative to the cutting section. The operator operates the reel lift switch to change the height of the raking reel relative to the cutting section. The operator operates the reel speed change switch to change the rotation speed of the raking reel.

JP 2006-271240 A

In farm fields, there may be areas where crops have fallen. In order for the harvesting unit to harvest the crops smoothly in areas where the crops have fallen, there is an appropriate position for the raking reel relative to the harvesting unit, an appropriate height for the raking reel relative to the harvesting unit, and an appropriate rotation speed for the raking reel.

As a result, when the harvester moves from a part of a field where the crops are upright to a part where the crops are lying down, the operator in the operating section must quickly move the reel to the appropriate position, adjust the reel to the appropriate height, and change the reel to the appropriate rotation speed, leaving room for improvement in terms of operability.

The present invention aims to configure a harvester so that the position, height and rotational speed of the raking reel can be quickly adjusted to suit fallen crops.

The harvester of the present invention is equipped with a cutting unit that has a raking reel that is driven to rotate around an axis along the left-right direction to raking in crops in the field toward the rear and harvests crops in the field, a position change actuator that can change the position of the raking reel back and forth relative to the cutting unit, a height change actuator that can change the height of the raking reel up and down relative to the cutting unit, a rotation speed change actuator that can change the rotation speed of the raking reel, and a setting operation device that can be operated manually, and is equipped with a control unit that, when the setting operation device is operated, moves the raking reel to a preset forward/backward set position by the position change actuator, moves the raking reel to a preset set height by the height change actuator, and changes the rotation speed of the raking reel to a preset set speed by the rotation speed change actuator.

According to the invention, when the harvester moves from a part of the field where the crop is standing to a part of the field where the crop is lying down, the operator only has to operate the setting operating tool.
When the setting operating device is operated, the control unit activates the position change actuator, the height change actuator and the rotation speed change actuator to move the take-in reel to a preset forward/backward position, move the take-in reel to a preset height, and change the rotation speed of the take-in reel to a preset speed.

In this case, the set front/rear position may be set to a position of the pick-up reel suitable for the fallen crop, the set height may be set to a height of the pick-up reel suitable for the fallen crop, and the set speed may be set to a rotation speed of the pick-up reel suitable for the fallen crop.
This allows the operator to quickly adjust the position, height and rotational speed of the raking reel to conditions suitable for fallen crops simply by operating the setting operating device, thereby improving the operability of the cutting unit.

In the present invention, it is preferable that a set front-rear position adjustment device is provided that can adjust the set front-rear position by manual operation.

In parts of a field where the crop has fallen, the set fore-aft position of the raking reel may be too far forward or too far backward, depending on the condition of the field and the condition of the crop.
According to the present invention, the operator can adjust the set fore-aft position of the raking reel by operating the set fore-aft position adjustment device, so that an appropriate set fore-aft position can be obtained for the raking reel depending on the condition of the field and the condition of the crop, thereby improving the harvesting performance of the cutting unit for fallen crops.

In the present invention, it is preferable that a position manipulation tool that can be operated manually is provided, and when the position manipulation tool is operated, the position change actuator operates based on the operation of the position manipulation tool, taking priority over the control unit.

In parts of a field where crops have fallen, the extent of the crops may change, with some areas being heavily lodged and others not so lodged, so the forward or backward position to which the raking reel has been moved by operating the setting operating device may no longer be the appropriate position.

According to the present invention, when the above-mentioned situation occurs, the operator can operate the position control device to move the raking reel from the set forward or backward position. This allows the raking reel to be positioned appropriately depending on the degree to which the crop has fallen, improving the harvesting performance of the cutting unit for fallen crops.

In the present invention, it is preferable that a height manipulation device that can be operated manually is provided, and when the height manipulation device is operated, the height change actuator operates based on the operation of the height manipulation device, taking priority over the control unit.

In parts of a field where crops have fallen, the extent of the crops may vary, with some areas experiencing significant crop lodging and others experiencing less lodging, so the height to which the raking reel is moved by operating the setting tool may no longer be the appropriate height.

According to the present invention, when the above-mentioned situation occurs, the operator can operate the height control device to move the raking reel from the set height. This allows the raking reel to be set at an appropriate height depending on the degree to which the crop has fallen, improving the harvesting performance of the cutting unit for fallen crops.

In the present invention, it is preferable that a rotation speed operation device that can be operated manually is provided, and when the rotation speed operation device is operated, the rotation speed change actuator operates based on the operation of the rotation speed operation device, taking priority over the control unit.

In parts of a field where crops have fallen, the extent of the crops may vary, with some areas experiencing significant crop lodging and others experiencing less lodging, so the high speed setting for the raking reel, set by operating the setting tool, may no longer be the appropriate rotation speed.

According to the present invention, when the above-mentioned situation occurs, the operator can change the rotation speed of the picking reel from the set speed by operating the rotation speed control device. This makes it possible to obtain an appropriate rotation speed for the picking reel depending on the degree of lodging of the crop, thereby improving the harvesting performance of the cutting section for the fallen crop.

In the present invention, it is preferable that a lifting actuator capable of raising and lowering the reaping unit is provided, and when the setting operation tool is operated, the control unit moves the reaping unit to a preset lifting height using the lifting actuator.

In a part of a field where crops have fallen over, there is an appropriate height for the cutting unit to harvest the crops without difficulty.
According to the present invention, when the setting operation tool is operated, the raking reel moves to the set forward/backward position, the raking reel moves to the set height, the rotational speed of the raking reel is changed to the set speed, and the lifting actuator is actuated to move the cutting unit to a preset lifting height. In this case, the set lifting height may be set to a height of the cutting unit appropriate for the fallen crop.
This enables the operator to quickly adjust the position, height and rotational speed of the scraping reel, as well as the height of the cutting unit, to conditions suitable for fallen crops, simply by operating the setting operating device, which is advantageous in terms of improving the operability of the cutting unit.

In the present invention, it is preferable that a manually operable lifting operation tool is provided, and when the lifting operation tool is operated, the lifting actuator operates based on the operation of the lifting operation tool, taking priority over the control unit.

In parts of a field where crops have fallen, the degree of lodging can vary, with some areas experiencing significant lodging and others experiencing little lodging, so the height of the reaping section set by operating the setting tool can no longer be appropriate.

According to the present invention, when the above-mentioned situation occurs, the operator can change the height of the cutting unit from the set lift height by operating the lifting operation tool. This allows the cutting unit to obtain an appropriate height depending on the degree of lodging of the crop, thereby improving the harvesting performance of the cutting unit for lodged crops.

In the present invention, it is preferable that the setting operation tool is provided on the lift operation tool.

In a harvesting machine, the operator operates the lifting operation tool relatively frequently.
According to the present invention, since the setting operation tool is provided on the lifting operation tool, it becomes easier for the worker to operate the setting operation tool.

In the present invention, a travel speed change device and a travel speed change actuator capable of changing the travel speed by operating the travel speed change device are provided, and it is preferable that when the setting operation tool is operated, the control unit operates the travel speed change device to a preset set speed position by the travel speed change actuator.

In a portion of a field where crops have fallen, there is an appropriate travel speed for the harvester to smoothly harvest the crops with the cutting unit.
According to the present invention, when the setting operation tool is operated, the take-in reel moves to the set forward/backward position, the take-in reel moves to the set height, the rotational speed of the take-in reel is changed to the set speed, and the travel speed change actuator is actuated to operate the travel speed change device of the harvester to a preset set speed position. In this case, the set speed position may be set to a travel speed of the harvester suitable for the fallen crop.
This allows the operator to quickly adjust the position, height and rotation speed of the picking reel, as well as the traveling speed of the harvester, to conditions suitable for fallen crops, simply by operating the setting operating device, which is advantageous in terms of improving the operability of the cutting unit.

In the present invention, it is preferable to provide a set speed position adjustment device that can adjust the set speed position by manual operation.

In parts of a field where the crop has fallen, the speed setting of the harvester's travel transmission may be too fast or too slow, depending on the condition of the field and the condition of the crop.
According to the present invention, the operator can adjust the set speed position of the harvester's traveling transmission by operating the set speed position adjustment device, thereby obtaining an appropriate set speed position of the harvester's traveling transmission depending on the state of the field and the state of the crop, thereby improving the harvesting performance of the cutting unit for fallen crops.

In the present invention, it is preferable that a manually operable gearshift operating device is provided, and when the gearshift operating device is operated, the travel speed change actuator operates based on the operation of the gearshift operating device, taking priority over the control unit.

In parts of a field where crops have fallen, the extent of the crops may vary, with some areas experiencing significant crop lodging and others experiencing only minor lodging, so the set speed position to which the harvester's travel transmission is operated by operating the setting operating tool may no longer be the appropriate speed position.

According to the present invention, when the above-mentioned situation occurs, the operator can operate the speed change device to shift the traveling transmission of the harvester from the set speed position. This allows the appropriate traveling speed of the harvester to be obtained depending on the degree of lodging of the crop, thereby improving the harvesting performance of the reaping section for the fallen crop.

In the present invention, it is preferable that a memory unit is provided that stores the operation front-rear position of the take-up reel when the setting operation tool is operated, the operation height of the take-up reel when the setting operation tool is operated, and the operation speed of the take-up reel when the setting operation tool is operated, when the setting operation tool is operated after the operation of the control unit is completed, and a return control unit is provided that moves the take-up reel to the operation front-rear position by the position change actuator, moves the take-up reel to the operation height by the height change actuator, and changes the rotation speed of the take-up reel to the operation speed by the rotation speed change actuator, when the setting operation tool is operated after the operation of the control unit is completed.

According to the present invention, when a harvester moves from a part of a field where crops are standing to a part of a field where crops are lying down and an operator operates the setting tool, the forward/backward position of the picking reel when the setting tool is operated (the position of the picking reel before it moves to the set forward/backward position) is stored. The height of the picking reel when the setting tool is operated (the height of the picking reel before it moves to the set height) is stored. The speed of the picking reel when the setting tool is operated (the rotational speed of the picking reel before it is changed to the set speed) is stored.

After the control unit has finished operating, when the harvester moves from the part of the field where the crops are lying down to the part of the field where the crops are standing up, the operator operates the setting operation tool, which causes the position change actuator, height change actuator and rotational speed change actuator to operate, returning the take-in reel to its operating front/rear position, the take-in reel to its operating height, and the rotational speed of the take-in reel to the operating speed.
Therefore, by simply operating the setting operating device, the operator can quickly return the position, height and rotational speed of the pick-up reel to the state before the setting operating device was operated, which is advantageous in terms of improving the operability of the cutting unit.

In the present invention, a lifting actuator capable of raising and lowering the reaping unit is provided, and when the setting operation tool is operated, the control unit moves the reaping unit to a preset lifting height by the lifting actuator, and when the setting operation tool is operated, the memory unit stores the lifting height of the reaping unit at the time of operation of the setting operation tool, and when the setting operation tool is operated after the operation of the control unit has ended, the return control unit preferably moves the reaping unit to the lifting height at the time of operation by the lifting actuator.

In a part of a field where crops have fallen over, there is an appropriate height for the cutting unit to harvest the crops without difficulty.
According to the present invention, when the setting operation tool is operated, the raking reel moves to the set forward/backward position, the raking reel moves to the set height, the rotational speed of the raking reel is changed to the set speed, and the lifting actuator is actuated to move the cutting unit to a preset lifting height. In this case, the set lifting height may be set to a height of the cutting unit appropriate for the fallen crop.
This enables the operator to quickly adjust the position, height and rotational speed of the scraping reel, as well as the height of the cutting unit, to conditions suitable for fallen crops, simply by operating the setting operating device, which is advantageous in terms of improving the operability of the cutting unit.

According to the present invention, when the harvester moves from a part of the field where the crops are standing to a part of the field where the crops are lying down and the operator operates the setting operation tool, the front-rear position of the raking reel during operation, the height of the raking reel during operation, and the speed of the raking reel during operation are stored, and the lift height of the cutting part during operation of the setting operation tool (the height of the cutting part before it moves to the set lift height) is also stored.

After the control unit has finished operating, when the harvester moves from the part of the field where the crops are lying down to the part where the crops are standing up, the operator can operate the setting tool, which returns the raking reel to its operating front-rear position and operating height, returns the rotational speed of the raking reel to the operating speed, and also operates the lifting actuator to return the cutting unit to its operating lifting height.
Therefore, by simply operating the setting operating device, the operator can quickly return the position, height and rotational speed of the picking reel and the height of the cutting unit to the state they were in before the setting operating device was operated, which is advantageous in terms of improving the operability of the cutting unit.

In the present invention, a travel speed change device and a travel speed change actuator capable of changing the travel speed by operating the travel speed change device are provided, and when the setting operation tool is operated, the control unit operates the travel speed change device to a preset set speed position by the travel speed change actuator, and when the setting operation tool is operated, the storage unit stores the operating speed position of the travel speed change device at the time of operating the setting operation tool, and when the setting operation tool is operated after the operation of the control unit is terminated, the return control unit preferably operates the travel speed change device to the operating speed position by the travel speed change actuator.

In a portion of a field where crops have fallen, there is an appropriate travel speed for the harvester to smoothly harvest the crops with the cutting unit.
According to the present invention, when the setting operation tool is operated, the take-in reel moves to the set forward/backward position, the take-in reel moves to the set height, the rotational speed of the take-in reel is changed to the set speed, and the travel speed change actuator is actuated to operate the travel speed change device of the harvester to a preset set speed position. In this case, the set speed position may be set to a travel speed of the harvester suitable for the fallen crop.
This allows the operator to quickly adjust the position, height and rotation speed of the picking reel, as well as the traveling speed of the harvester, to conditions suitable for fallen crops, simply by operating the setting operating device, which is advantageous in terms of improving the operability of the cutting unit.

According to the present invention, when the harvester moves from a part of the field where the crops are standing to a part of the field where the crops are lying down and the operator operates the setting operation tool, in addition to storing the front-rear position of the raking reel during operation, the height of the raking reel during operation, and the speed of the raking reel during operation, the operating speed position of the traveling transmission of the harvester during operation of the setting operation tool (the speed position of the traveling transmission of the harvester before it was operated to the set speed position) is stored.

After the control unit has finished operating, when the harvester moves from the part of the field where the crops are lying down to the part where the crops are standing up, the operator can operate the setting operation tool, which returns the raking reel to its operating front-rear position and operating height, and returns the rotational speed of the raking reel to the operating speed, as well as operating the travel speed change actuator to return the harvester's travel transmission to the operating speed position.
Therefore, by simply operating the setting operating device, the operator can quickly return the position, height and rotational speed of the raking reel, and the speed position of the harvester's traveling transmission to the state before the setting operating device was operated, which is advantageous in terms of improving the operability of the cutting unit.

In the present invention, it is preferable that the cutting unit is provided with a working clutch capable of transmitting and disconnecting power, and that when the working clutch is operated to a disconnected state, the operation of the control unit is stopped.

The harvester is equipped with a working clutch that can transmit and interrupt power to the cutting section, and is configured so that when the working clutch is operated to the transmitting state, the cutting section operates, and when the working clutch is operated to the disconnected state, the cutting section stops.

According to the present invention, when the working clutch is disengaged and the reaping unit is stopped, the control unit does not operate even if the setting operation tool is operated. This makes it possible to avoid a situation where the setting operation tool is mistakenly operated and the position change actuator, etc. is activated during non-harvesting work when the reaping unit is stopped.

FIG. FIG. FIG. FIG. FIG. 4 is a schematic diagram showing a transmission system of the cutting unit. FIG. 4 is a rear view of the upper part of the operating lever. FIG. 4 is a right side view of the upper part of the operating lever. FIG. 2 is a diagram showing a linked state between the control device and each unit. FIG. 2 is a diagram showing a linked state between the control device and each unit. FIG. 13 is a diagram showing a control flow when a setting button is pressed. FIG. 13 is a diagram showing a control flow when a setting button is pressed.

Figures 1 to 11 show a general-purpose combine harvester, which is an example of a harvester, with F indicating the forward direction, B indicating the backward direction, U indicating the upward direction, D indicating the downward direction, R indicating the right direction, and L indicating the left direction.

(Overall configuration of the combine)
1 and 2, a machine frame 1 is supported by a crawler-type traveling device 2, and a reaping unit 3 and a driving unit 4 are provided at the front of the machine frame 1. A threshing device 5 is provided at the left side of the machine frame 1, a grain tank 6 is provided at the right side of the machine frame 1, and a crop discharge device 7 is connected to the lower part of the rear of the grain tank 6.

The conveying device 8 is supported on the front of the threshing device 5 so that it can swing up and down around an axis that runs in the left-right direction, and extends forward from the threshing device 5. The reaping unit 3, which is connected to the front of the conveying device 8 and harvests crops in the field, is provided on the front of the machine frame 1, and the reaping unit 3 and conveying device 8 can be raised and lowered.

As the combine moves forward, crops in the field are introduced into the harvesting section 3 and harvested, and the crops are transported from the harvesting section 3 through the transport device 8 and supplied to the threshing device 5. The crops are threshed by the threshing device 5, and the crops threshed and collected by the threshing device 5 are stored in the grain tank 6. When the grain tank 6 is full, the crops in the grain tank 6 are discharged by the discharge device 7.

(Configuration of the reaping unit)
1 to 4, the mowing unit 3 is provided with a mowing frame 9, a grass dividing tool 10, a raking reel 11, a cutting device 12, a lateral feed screw 13, etc. The mowing frame 9 is the framework of the mowing unit 3 and is provided across the entire width of the mowing unit 3 in the left-right direction. The rear part of the mowing frame 9 is connected to the front part of the transport device 8.

As shown in Figures 3 and 4, right and left side walls 14 are connected to the right and left ends of the cutting frame 9. The right and left grass splitting tools 10 are connected to the front ends of the side walls 14 and extend forward from the side walls 14.

The raking reel 11 is located above the cutting frame 9, and a clipper-type cutting device 12 is located at the front of the cutting frame 9. A lateral feed screw 13 is supported across the right and left side walls 14 so as to be rotatable about an axis extending in the left-right direction.

As the combine moves forward, the crops in the field are weeded by the right and left weeding tools 10 and then scraped backward into the harvesting frame 9 by the raking reel 11, and the base of the crop is cut by the cutting device 12. Once the crops are introduced into the harvesting frame 9, they are transported by the lateral feed screw 13 toward the center of the harvesting frame 9, from which they are fed into the conveying device 8, and from which they are supplied to the threshing device 5.

(Configuration of the raking reel)
As shown in Figures 3 and 4, the take-in reel 11 is provided with right and left rotating frames 15, a plurality of frames 16 attached around the outer periphery of the right and left rotating frames 15, a number of tines 17 attached facing downward to the frames 16, a drive shaft 18 attached around the center of the right and left rotating frames 15, and the like.

The fulcrum shaft 19 is supported on the upper rear part of the cutting frame 9 so as to be rotatable about an axis P1 along the left-right direction, and the right and left support frames 20 are connected to the right and left parts of the fulcrum shaft 19. The support frames 20 are positioned in the front-to-rear direction at an upper position relative to the grass dividing tool 10 and the side wall 14.

Right and left support members 21 are attached to the front of the support frame 20 so that they can move back and forth along the support frame 20. In the pick-up reel 11, the right and left parts of the drive shaft 18 are rotatably supported by the support members 21, and the pick-up reel 11 is supported by the support members 21 so that it can rotate around an axis P2 that runs along the left-right direction.

As will be described later, the take-in reel 11 is driven to rotate clockwise in FIG. 3 around a central axis P2.
With the above-described configuration, a harvesting unit 3 is provided which harvests crops in the field and has a raking reel 11 which is driven to rotate around an axis P2 aligned in the left-right direction to rake in crops in the field rearward.

(Configuration for changing the position of the take-in reel forward and backward and configuration for changing the height of the take-in reel up and down)
3, 4 and 5, an operating shaft 22 is supported at the rear of the right and left support frames 20 so as to be rotatable about an axis P3 extending in the left-right direction. Right and left operating arms 23 are connected to the right and left portions of the operating shaft 22, and right and left linking rods 24 are connected between the operating arms 23 and the support members 21.

An electric cylinder 25 (corresponding to a position change actuator) is connected between the right support frame 20 and the right operating arm 23. The electric cylinder 25 is extended and retracted by a built-in electric motor (not shown).

When the electric cylinder 25 expands and contracts, the right operating arm 23 is swung back and forth around the axis P3, and the left operating arm 23 is swung back and forth around the axis P3 by the operating shaft 22. When the operating arm 23 is swung back and forth, the support member 21 is moved back and forth along the support frame 20 via the linkage rod 24, and the position of the raking reel 11 relative to the cutting unit 3 is changed back and forth along the support frame 20.

Right and left lifting cylinders 26 (corresponding to height change actuators) are connected between the side walls 14 and the support frame 20, and the lifting cylinders 26 are single-acting hydraulic cylinders. When the lifting cylinders 26 extend and retract, the support frame 20 is swung up and down around the axis P1, and the height of the raking reel 11 relative to the cutting unit 3 is changed up and down.

With the above configuration, an electric cylinder 25 (position change actuator) is provided that can change the position of the raking reel 11 back and forth relative to the cutting unit 3. A lifting cylinder 26 (height change actuator) is provided that can change the height of the raking reel 11 up and down relative to the cutting unit 3.

(Outline of the transmission system of the harvesting unit)
As shown in Figure 8, the power of an engine 27 (see Figure 1) mounted on the body frame 1 is transmitted to a harvesting and threshing clutch 28 (corresponding to a working clutch), from which it is transmitted to the threshing device 5, and from which it is transmitted to the harvesting section 3 as described below.

A clutch lever 29 for operating the reaping/threshing clutch 28 is provided on the driving section 4 (see Figures 1 and 2). When the clutch lever 29 is operated to the reaping/threshing position A1, the power of the engine 27 is transmitted to both the reaping section 3 and the threshing device 5, and both the reaping section 3 and the threshing device 5 operate (corresponding to the transmission state of the working clutch).

When the clutch lever 29 is operated to the threshing position A2, the power of the engine 27 is transmitted to the threshing device 5, and the threshing device 5 operates. The power of the engine 27 is not transmitted to the reaping unit 3, and the reaping unit 3 stops (corresponding to a disengaged state of the work clutch).
When the clutch lever 29 is operated to the stop position A3, the power of the engine 27 is not transmitted to both the harvesting unit 3 and the threshing device 5, and both the harvesting unit 3 and the threshing device 5 stop (equivalent to the working clutch being disengaged).

(Configuration of the transmission system to the cutting device, cross feed screw, and raking reel in the reaping section)
As shown in Figures 3, 4 and 5, a transmission shaft 30 is supported along the left-right direction at the lower rear part of the harvesting frame 9, and power from the harvesting and threshing clutch 28 is transmitted to the transmission shaft 30 via a transmission chain 31.

A drive mechanism 32 is provided to reciprocate the cutting blade of the cutting device 12, and the power of the transmission shaft 30 is transmitted to the drive mechanism 32 via a transmission belt 33, so that the cutting blade of the cutting device 12 is reciprocated by the drive mechanism 32. The power of the transmission shaft 30 is transmitted to the transverse feed screw 13 via a transmission chain 34, so that the transverse feed screw 13 is rotated clockwise in FIG. 3.

A split pulley type continuously variable transmission 35 is provided on the right side wall 14 of the cutting section 3, and the power of the transmission shaft 30 is transmitted to the continuously variable transmission 35 via a transmission chain 36. An electric motor 37 (corresponding to a rotational speed changing actuator) is provided to change the speed of the continuously variable transmission 35.

The transmission shaft 38 is supported by the right support frame 20 concentrically with the axis P1, and the power of the continuously variable transmission 35 is transmitted to the transmission shaft 38 via a transmission chain 39. The relay rotor 40 is supported by the right support frame 20. The support arm 42 is supported by the right link rod 24 so as to be swingable back and forth, the relay rotor 41 is supported on the upper end of the support arm 42, and a biasing mechanism 43 is provided to bias the support arm 42 backward.

A transmission chain 44 is attached between the drive sprocket 38a connected to the transmission shaft 38 and the driven sprocket 18a connected to the drive shaft 18 of the raking reel 11, and the transmission chain 44 is attached to the intermediate rotors 40 and 41.

The power of the transmission shaft 30 is transmitted to the continuously variable transmission 35, which is operated by the electric motor 37 to change the speed of the power of the transmission shaft 30. The power whose speed is changed by the continuously variable transmission 35 is transmitted to the transmission shaft 38, and then transmitted to the drive shaft 18 of the take-in reel 11 via the transmission chain 44, so that the take-in reel 11 is rotated clockwise in FIG. 3.

Even if the position of the take-in reel 11 is changed forward or backward by the electric cylinder 25, the relay rotor 41 moves forward or backward together with the right link rod 24, so the tension of the transmission chain 44 is maintained at an appropriate level.

The above configuration provides an electric motor 37 (rotation speed change actuator) that can change the rotation speed of the take-in reel 11.

(Configuration of operation lever)
6 and 7, an operating lever 47 (corresponding to a lifting operating tool) is provided on the driving section 4 (see FIGS. 1 and 2). The operating lever 47 can be operated in the front-rear and left-right directions, and the operating position of the operating lever 47 is input to the control device 50 (see FIGS. 8 and 9).

A setting button 51 (corresponding to a setting operation tool) is provided on the rear surface 47a of the upper part of the operating lever 47 facing the operator seated in the driver's seat 4, and a horizontal return button 52 is provided on the front side opposite the rear surface 47a of the operating lever 47.

A front button 53 (corresponding to a position operating tool) is provided on the front right side of the rear surface 47a of the operating lever 47. A rear button 54 (corresponding to a position operating tool) is provided on the rear surface 47a of the operating lever 47, below the setting button 51.

An up button 55 (corresponding to a height operating tool) and a down button 56 (corresponding to a height operating tool) are provided on the rear surface 47a of the operating lever 47 above and below the setting button 51. A right-up button 57 and a left-up button 58 are provided on the rear surface 47a of the operating lever 47 to the right and left of the setting button 51.
As shown in FIGS. 8 and 9, a rotary speed dial 59 (corresponding to a rotary speed operating tool) is provided on the driving unit 4.

For example, if the operator holds the operating lever 47 in his/her right hand, the operator can use the thumb of his/her right hand to press and operate the setting button 51, the back button 54, the up button 55, the down button 56, the right up button 57, and the left up button 58. The operator can use the index finger of his/her right hand to press and operate the horizontal return button 52 and the front button 53.

Operation signals from the setting button 51, horizontal return button 52, forward button 53 and backward button 54, up button 55 and down button 56, right up button 57 and left up button 58, and speed dial 59 are input to the control device 50.

(Operation to change the position, height and rotation speed of the feed reel)
6, 7 and 8, an electromagnetically operated control valve 60 that supplies and discharges hydraulic oil to and from the lift cylinder 26 is provided. When an operator presses the front button 53, the back button 54, the up button 55, the down button 56, and the speed dial 59, the control device 50 operates the electric cylinder 25, the control valve 60 (lift cylinder 26), and the electric motor 37 to perform the operation described below.

When the worker presses the front button 53, the electric cylinder 25 contracts, the link rod 24 is pushed forward, and the pick-up reel 11 moves forward along the support frame 20. When the worker stops pressing the front button 53, the electric cylinder 25 stops, and the forward movement of the pick-up reel 11 stops.

When the worker presses the rear button 54, the electric cylinder 25 extends, the link rod 24 is pulled backward, and the pick-up reel 11 moves backward along the support frame 20. When the worker stops pressing the rear button 54, the electric cylinder 25 stops, and the pick-up reel 11 stops moving backward.

When the worker presses the up button 55, the lift cylinder 26 extends, the support frame 20 swings upward, and the height of the pick-up reel 11 increases. When the worker stops pressing the up button 55, the lift cylinder 26 stops, and the upward movement of the pick-up reel 11 stops.

When the worker presses the down button 56, the lift cylinder 26 contracts, the support frame 20 swings downward, and the height of the pick-up reel 11 decreases. When the worker stops pressing the down button 56, the lift cylinder 26 stops, and the downward movement of the pick-up reel 11 stops.

When the operator operates the speed dial 59, the electric motor 37 operates the continuously variable transmission 35, and the rotational speed of the take-in reel 11 is changed to the high or low speed side so that the rotational speed of the take-in reel 11 corresponds to the operating position of the speed dial 59.

(Configuration of the lifting and lowering operation system for the reaping unit)
8, a lift cylinder 48 (corresponding to a lift actuator) is connected between the machine frame 1 and the transport device 8, and the reaping unit 3 and the transport device 8 are lifted and lowered by the lift cylinder 48. The lift cylinder 48 is a single-acting hydraulic cylinder, and is provided with an electromagnetically operated control valve 49 that supplies and discharges hydraulic oil to and from the lift cylinder 48.

When the operator operates the operating lever 47 backward from the neutral position, the control device 50 operates the control valve 49, the lifting cylinder 48 is extended, and the cutting unit 3 is raised. When the operator returns the operating lever 47 to the neutral position, the lifting cylinder 48 stops, and the cutting unit 3 stops rising.

When the operator operates the operating lever 47 forward from the neutral position, the control device 50 operates the control valve 49, the lifting cylinder 48 contracts, and the cutting unit 3 is lowered. When the operator returns the operating lever 47 to the neutral position, the lifting cylinder 48 stops, and the cutting unit 3 stops lowering.

(Lifting control of the reaping unit)
As shown in Figure 8, a flat ground sensor 61 having a predetermined width is supported at the bottom of the cutting unit 3 so that it can swing up and down around an axis P4 along the left-right direction, and the ground sensor 61 is biased downward by a spring (not shown).

A height sensor 62 is provided to detect the angle of the ground sensor 61 relative to the reaping unit 3, and the detection value of the height sensor 62 is input to the control device 50. By detecting the angle of the ground sensor 61 relative to the reaping unit 3, the height of the reaping unit 3 relative to the ground is detected.

The lift control unit 71, which is software, is provided in the control device 50. A dial-operated cutting height setting unit 63 is provided in the driving unit 4 (see Figures 1 and 2), and an operation signal from the cutting height setting unit 63 is input to the control device 50, allowing the set cutting height to be set by the cutting height setting unit 63. The ground sensor 61 has a predetermined width within which the height of the cutting unit 3 relative to the ground can be detected when the cutting unit 3 is in contact with the ground, and the set cutting height is set as a numerical value within the range detectable by the ground sensor 61.

When the cutting unit 3 is raised to a position where the ground sensor 61 does not touch the ground (when the ground sensor 61 is at the lower limit of the swing range), the lifting control unit 71 is stopped. When the operating lever 47 is operated forward from the neutral position, the cutting unit 3 is lowered, and the ground sensor 61 touches the ground (when the ground sensor 61 rises slightly from the lower limit of the swing range), the lifting control unit 71 is activated.

When the lifting/lowering control unit 71 is activated, the lifting/lowering control unit 71 operates the control valve 49 and expands/contracts the lifting cylinder 48 so that the height of the cutting unit 3 relative to the ground detected by the ground contact sensor 61 and the height sensor 62 becomes the set cutting height set by the cutting height setting unit 63, thereby automatically lifting and lowering the cutting unit 3.

When the lift control unit 71 is operating, if the operating lever 47 is operated forward or backward from the neutral position, the control valve 49 and lift cylinder 48 take priority over the lift control unit 71 and operate based on the operation of the operating lever 47 as described above.

(Configuration of driving transmission system)
9, a hydrostatic continuously variable transmission 45 (corresponding to a traveling transmission) is provided, and the continuously variable transmission 45 can change the speed steplessly between the forward and reverse sides around a neutral stop position. The power of the engine 27 is transmitted to the continuously variable transmission 45, where the speed is changed, and then transmitted to the traveling device 2.

The speed change lever 46 (corresponding to a speed change operating tool) is provided on the driving section 4 (see Figures 1 and 2), and the speed change lever 46 can be operated over a range of positions: neutral position N, maximum forward speed position FM, and maximum reverse speed position RM, and the operating position of the speed change lever 46 is input to the control device 50. A hydraulically operated speed change cylinder 69 (corresponding to a driving speed change actuator) is provided on the continuously variable transmission 45, and the continuously variable transmission 45 is operated by the speed change cylinder 69.

When the operator operates the shift lever 46 within the range of neutral position N, maximum forward speed position FM, and maximum reverse speed position RM, the control device 50 operates the shift cylinder 69, and the continuously variable transmission 45 is operated to a speed position corresponding to the operating position of the shift lever 46.

A turning device (not shown) is provided that generates a speed difference between the right and left traveling devices 2, applies brakes to one of the right and left traveling devices 2, and drives the right and left traveling devices 2 in opposite directions. When the operating lever 47 is operated in the left or right direction, the turning device makes right and left turns as described below.

When the operator operates the control lever 47 to the right from the neutral position, the right traveling device 2 is driven at a slower speed than the left traveling device 2 (right gentle turn). When the control lever 47 is operated further to the right, the right traveling device 2 is braked (right pivot turn). When the control lever 47 is operated further to the right, the right traveling device 2 is driven in the opposite direction to the left traveling device 2 (right super pivot turn).
When the operator operates the operating lever 47 leftward from the neutral position, the left traveling device 2 is operated in the same manner as described above, and left gentle turn, left pivot turn, and left super pivot turn are performed.

The above configuration provides a continuously variable transmission 45 (traveling transmission) for traveling. A speed change cylinder 69 (traveling speed change actuator) is provided that can change the traveling speed by operating the continuously variable transmission 45 (traveling transmission).

(Rolling control system configuration)
As shown in FIG. 1, in each of the right and left traveling devices 2, a track frame 2b supporting wheels 2a is supported on the vehicle frame 1 so as to be capable of ascending and descending.

As shown in FIG. 9, a right rolling cylinder 64 is provided to raise and lower the track frame 2b of the right traveling device 2 relative to the machine frame 1, and an electromagnetically operated control valve 66 is provided to supply and discharge hydraulic oil to the right rolling cylinder 64. A left rolling cylinder 65 is provided to raise and lower the track frame 2b of the left traveling device 2 relative to the machine frame 1, and an electromagnetically operated control valve 67 is provided to supply and discharge hydraulic oil to the left rolling cylinder 65.

A rolling control unit 72 as software is provided in the control device 50. An inclination sensor (not shown) is provided to detect the left and right inclination of the aircraft frame 1 relative to the horizontal plane, and the detection value of the inclination sensor is input to the control device 50.

Based on the detection value of the tilt sensor, the rolling control unit 72 operates the control valves 66, 67 so that the vehicle frame 1 is maintained horizontal, and the right rolling cylinder 64 and the left rolling cylinder 65 are actuated to raise and lower the track frames 2b of the right and left traveling devices 2 relative to the vehicle frame 1.

As shown in Figures 6 and 9, when the operator presses the right ascent button 57, the rolling control unit 72 stops, the control valve 66 is operated, and the right rolling cylinder 64 lowers the track frame 2b of the right traveling device 2 relative to the machine frame 1. When the operator stops pressing the right ascent button 57, the right rolling cylinder 64 stops, and the descent of the track frame 2b of the right traveling device 2 stops.

When the operator presses the left ascent button 58, the rolling control unit 72 stops, the control valve 67 is operated, and the left rolling cylinder 65 lowers the track frame 2b of the left traveling device 2 relative to the machine frame 1. When the operator stops pressing the left ascent button 58, the left rolling cylinder 65 stops, and the descent of the track frame 2b of the left traveling device 2 stops.

When the right-up button 57 and left-up button 58 are pressed and the rolling control unit 72 is stopped, if the operator presses the horizontal return button 52, the rolling control unit 72 will operate and the machine frame 1 will return to the horizontal position.

(Configuration regarding operation of the raking reel, the reaping unit, and the continuously variable transmission to a state suitable for fallen crops)
As shown in Figures 8 and 9, when the position of the take-in reel 11 relative to the cutting unit 3 is changed back and forth along the support frame 20, the position of the take-in reel 11 relative to the cutting unit 3 is detected by a position sensor 81, and the detection value of the position sensor 81 is input to the control device 50.

Within the fore-aft movement range of the take-in reel 11, a set fore-aft position C1, which is a position slightly rearward from the foremost position, is set in the control device 50. A set fore-aft position adjustment dial 79 (corresponding to a set fore-aft position adjustment tool) is provided in the driving unit 4 (see Figures 1 and 2), and the operator can adjust the set fore-aft position C1 forward or backward by operating the set fore-aft position adjustment dial 79.

The above configuration provides a set front-rear position adjustment dial 79 (set front-rear position adjustment device) that can be manually operated to adjust the set front-rear position C1.

When the height of the raking reel 11 relative to the cutting unit 3 is changed up or down, the height of the raking reel 11 relative to the cutting unit 3 is detected by the height sensor 82, and the detection value of the height sensor 82 is input to the control device 50. Within the vertical movement range of the raking reel 11, a set height C2 that is a position slightly above the lowest position is set in the control device 50.

When the electric motor 37 operates the continuously variable transmission 35 (see Figures 3 and 5) to change the rotational speed of the take-in reel 11, a rotational speed sensor 83 is provided to detect the rotational speed of the take-in reel 11 by detecting the speed change position of the continuously variable transmission 35, and the detection value of the rotational speed sensor 83 is input to the control device 50. Within the range in which the rotational speed of the take-in reel 11 can be changed, the maximum speed is set in the control device 50 as the set speed C3 (see Figure 10).

When the reaping unit 3 is raised and lowered, a lift height sensor 84 is provided to detect the lift height of the reaping unit 3 relative to the machine frame 1 by detecting the vertical angle of the reaping unit 3 (transport device 8) relative to the machine frame 1, and the detection value of the lift height sensor 84 is input to the control device 50.

When the lifting/lowering control unit 71 is operated, the set mowing height is set by the mowing height setting unit 63, and the lowest position of the change range of the set mowing height is set in the control device 50 as the set lifting height C4 (see Figure 10).

When the continuously variable transmission 45 is operated by the shift lever 46 and the shift cylinder 69, a speed position sensor 85 is provided to detect the speed position of the continuously variable transmission 45, and the detection value of the speed position sensor 85 is input to the control device 50. The speed position lower than the maximum forward speed position FM of the continuously variable transmission 45 is set in the control device 50 as the set speed position C5 (see FIG. 10).

A set speed position adjustment dial 80 (corresponding to a set speed position adjustment tool) is provided on the driving section 4 (see Figures 1 and 2), and the operator can adjust the set speed position C5 to a high or low level by operating the set speed position adjustment dial 80.

The above configuration provides a set speed position adjustment dial 80 (set speed position adjustment device) that can be manually operated to adjust the set speed position C5.

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 1
8 and 9 , a storage unit 70 is provided in the control device 50. A lying-down control unit 73 (corresponding to a control unit) as software is provided in the control device 50, and a return control unit 74 as software is provided in the control device 50.

As shown in Figures 8 to 11, when the clutch lever 29 is operated to the reaping and threshing position A1 (both the reaping unit 3 and the threshing device 5 are operating) (step S1), when the operator presses the setting button 51 (step S2), the following operation is performed (step S3).

The position of the pick-up reel 11 relative to the cutting unit 3 when the setting button 51 is pressed is detected by the position sensor 81, and the detection value of the position sensor 81 is stored in the memory unit 70 as the forward/rearward position B1 of the pick-up reel 11 when the setting button 51 is pressed.

The height of the pick-up reel 11 relative to the harvesting unit 3 when the setting button 51 is pressed is detected by the height sensor 82, and the detection value of the height sensor 82 is stored in the memory unit 70 as the operating height B2 of the pick-up reel 11 when the setting button 51 is pressed.

The rotation speed of the take-in reel 11 when the setting button 51 is pressed is detected by the rotation speed sensor 83, and the detection value of the rotation speed sensor 83 is stored in the memory unit 70 as the operating speed B3 of the take-in reel 11 when the setting button 51 is pressed.

The lift height of the cutting unit 3 relative to the machine frame 1 when the setting button 51 is pressed is detected by the lift height sensor 84, and the detection value of the lift height sensor 84 is stored in the memory unit 70 as the lift height B4 of the cutting unit 3 during operation when the setting button 51 is pressed.

The speed position of the continuously variable transmission 45 when the setting button 51 is pressed is detected by the speed position sensor 85, and the detection value of the speed position sensor 85 is stored in the memory unit 70 as the operating speed position B5 of the continuously variable transmission 45 when the setting button 51 is pressed.

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 2
The above-mentioned configuration provides a manually operable setting button 51 (setting operation tool). The setting button 51 (setting operation tool) is provided on the operation lever 47 (lifting operation tool).

When the setting button 51 (setting operation tool) is operated, a memory unit 70 is provided which stores the forward/rear position B1 of the take-up reel 11 when the setting button 51 (setting operation tool) is operated, the height B2 of the take-up reel 11 when the setting button 51 (setting operation tool) is operated, and the speed B3 of the take-up reel 11 when the setting button 51 (setting operation tool) is operated.

When the setting button 51 (setting operation tool) is operated, the memory unit 70 stores the operating lift height B4 of the cutting unit 3 when the setting button 51 (setting operation tool) is operated. When the setting button 51 (setting operation tool) is operated, the memory unit 70 stores the operating speed position B5 of the continuously variable transmission 45 (travel transmission) when the setting button 51 (setting operation tool) is operated.

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 3
As shown in Figures 8 to 11, when the operator presses the setting button 51 to detect and store the front-rear position during operation B1, the height during operation B2, the speed during operation B3, the lifting height during operation B4, and the speed position during operation B5, the lowering control unit 73 performs the operation described below (step S4).

The lowering control unit 73 operates the electric cylinder 25 to move the take-in reel 11 to the set front-rear position C1. In this case, the operator can adjust the set front-rear position C1 forward or backward by operating the set front-rear position adjustment dial 79.

The lowering control section 73 operates the control valve 60, operates the lifting cylinder 26, and moves the take-in reel 11 to the set height C2.
The lowering control section 73 operates the electric motor 37, operates the continuously variable transmission 35, and changes the rotational speed of the take-in reel 11 to the set speed C3.

The lowering control unit 73 changes the set mowing height set by the mowing height setting unit 63 to the set lifting height C4 of the lowest position.
The lift control unit 71 operates the control valve 49, operates the lift cylinder 48, and moves the reaping unit 3 to the set lift height C4. The lift control unit 71 is functioning, and the reaping unit 3 is maintained at the set lift height C4 (set reaping height) from the ground.

The lowering control unit 73 operates the speed change cylinder 69, which operates the continuously variable transmission 45, and sets the continuously variable transmission 45 to the set speed position C5. In this case, the operator can adjust the set speed position C5 to a high or low position by operating the set speed position adjustment dial 80.

The raking reel 11 is moved to the set front-rear position C1 and set height C2, the rotational speed of the raking reel 11 is changed to the set speed C3, the reaping unit 3 is moved to the set lifting height C4, and the continuously variable transmission 45 is operated to the set speed position C5, causing the lowering control unit 73 to end operation.

In this case, when the clutch lever 29 is operated to the threshing position A2 (the reaping unit 3 is stopped and the threshing device 5 is operating) and when the clutch lever 29 is operated to the stop position A3 (both the reaping unit 3 and the threshing device 5 are stopped) (step S1), even if the setting button 51 is pressed, steps S3 and S4 are not performed (corresponding to the control unit being stopped).

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 4
With the above configuration, when the setting button 51 (setting operating tool) is operated, the electric cylinder 25 (position changing actuator) moves the take-in reel 11 to a preset set forward/backward position C1, the lifting cylinder 26 (height changing actuator) moves the take-in reel 11 to a preset set height C2, and the electric motor 37 (rotational speed changing actuator) changes the rotational speed of the take-in reel 11 to a preset set speed C3, which is a lowering control unit 73 (control unit).

The machine is equipped with a lifting cylinder 48 (lifting actuator) that can raise and lower the reaping unit 3. When the setting button 51 (setting operation tool) is operated, the lowering control unit 73 (control unit) uses the lifting cylinder 48 (lifting actuator) to move the reaping unit 3 to a preset lifting height C4.

It is equipped with a continuously variable transmission 45 (traveling transmission) and a speed change cylinder 69 (traveling speed change actuator) that can change the traveling speed by operating the continuously variable transmission 45 (traveling transmission). When the setting button 51 (setting operation tool) is operated, the lowering control unit 73 (control unit) operates the continuously variable transmission 45 (traveling transmission) to a preset set speed position C5 using the speed change cylinder 69 (traveling speed change actuator).

The reaping unit 3 is equipped with a reaping/threshing clutch 28 (working clutch) that can transmit and cut off power. When the reaping/threshing clutch 28 (working clutch) is operated to the threshing position A2 (cut-off state) and the stop position A3 (cut-off state), the operation of the lying control unit 73 (control unit) stops.

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 5
8 to 11, when the operator presses the front button 53 (rear button 54) after the operation of the tilt control unit 73 has been completed (step S5), the electric cylinder 25 expands and contracts, and the take-in reel 11 is moved forward (rear) from the set front-rear position C1. When the operator stops pressing the front button 53 (rear button 54), the electric cylinder 25 stops, and the take-in reel 11 stops (step S6).

After the operation of the lowering control unit 73 is completed, when the worker presses the up button 55 (down button 56) (step S7), the control valve 60 is operated to extend and retract the lifting cylinder 26, and the picking reel 11 is moved upward (downward) from the set height C2. When the worker stops pressing the up button 55 (down button 56), the lifting cylinder 26 stops, and the picking reel 11 stops (step S8).

After the operation of the lowering control unit 73 is completed, when the worker operates the speed dial 59 (step S9), the electric motor 37 operates the continuously variable transmission 35, and the rotational speed of the take-in reel 11 is changed from the set speed C3 to the high speed side (low speed side). The electric motor 37 operates the continuously variable transmission 35 so that the rotational speed of the take-in reel 11 corresponding to the operating position of the speed dial 59 is obtained (step S10).

After the operation of the lowering control unit 73 is completed, when the operator operates the operating lever 47 forward (rearward) from the neutral position (step S11), the control valve 49 is operated to extend and retract the lifting cylinder 48, and the cutting unit 3 is moved downward (upward) from the set lifting height C4. When the operator returns the operating lever 47 to the neutral position, the lifting cylinder 48 stops, and the cutting unit 3 stops (step S12).

After the operation of the lowering control unit 73 is completed, when the worker operates the speed change lever 46 (step S13), the speed change cylinder 69 is actuated, and the continuously variable transmission 45 is operated from the set speed position C5 to the high speed side (low speed side), and the continuously variable transmission 45 is operated to the speed position corresponding to the speed change lever 46 (step S14).

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 6
The above configuration provides the front button 53 (position operation tool) and the rear button 54 (position operation tool) that can be operated manually. When the front button 53 (position operation tool) and the rear button 54 (position operation tool) are operated, the electric cylinder 25 (position change actuator) operates based on the operation of the front button 53 (position operation tool) and the rear button 54 (position operation tool) in priority to the lowering control section 73 (control section).

It is equipped with an up button 55 (height operation device) and a down button 56 (height operation device) that can be operated manually. When the up button 55 (height operation device) and the down button 56 (height operation device) are operated, the lifting cylinder 26 (height change actuator) operates based on the operation of the up button 55 (height operation device) and the down button 56 (height operation device), prior to the lowering control unit 73 (control unit).

A speed dial 59 (rotation speed operating device) that can be operated manually is provided. When the speed dial 59 (rotation speed operating device) is operated, the electric motor 37 (rotation speed change actuator) operates based on the operation of the speed dial 59 (rotation speed operating device), taking priority over the tilt control unit 73 (control unit).

It is equipped with an operating lever 47 (lifting operation tool) that can be operated manually. When the operating lever 47 (lifting operation tool) is operated, the lifting cylinder 48 (lifting actuator) operates based on the operation of the operating lever 47 (lifting operation tool) in priority to the lowering control unit 73 (control unit).

The vehicle is provided with a shift lever 46 (shift operation device) that can be operated manually. When the shift lever 46 (shift operation device) is operated, the shift cylinder 69 (travel speed change actuator) operates based on the operation of the shift lever 46 (shift operation device), taking priority over the lowering control unit 73 (control unit).

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 7
As shown in Figures 8 to 11, after the operation of the lowering control unit 73 has been completed, when the operator presses the setting button 51 (step S15), or when the operator operates the clutch lever 29 to the threshing position A2 (stop position A3) (step S16), the return control unit 74 performs the operation described below (step S17).

The return control unit 74 operates the electric cylinder 25 to move the take-in reel 11 to the operating front-rear position B1 stored in the memory unit 70.
The return control unit 74 operates the control valve 60 and the lifting cylinder 26 to operate, and the take-in reel 11 is moved to the operating height B2 stored in the memory unit 70.
The return control unit 74 operates the electric motor 37 and the continuously variable transmission 35 to change the rotational speed of the take-in reel 11 to the operating speed B3 stored in the memory unit 70.

The return control unit 74 changes the set mowing height (set lift height C4) set by the mowing height setting unit 63 to the operating lift height B4 of the mowing unit 3 stored in the memory unit 70.
The lift control unit 71 operates the lift cylinder 48 to move the reaping unit 3 to the operating lift height B4 stored in the memory unit 70. The lift control unit 71 is functioning, and the reaping unit 3 is maintained at the operating lift height B4 (set reaping height) from the ground.
The return control unit 74 operates the speed change cylinder 69 to operate the continuously variable transmission 45, and operates the continuously variable transmission 45 to the operating speed position B5 stored in the memory unit 70.

The raking reel 11 is moved to the operating front-rear position B1 and the operating height B2, the rotational speed of the raking reel 11 is moved to the operating speed B3, the cutting unit 3 is moved to the operating lift height B4, and the continuously variable transmission 45 is operated to the operating speed position B5, causing the return control unit 74 to end operation.

(Operation of the raking reel, the harvesting unit and the continuously variable transmission to a state suitable for fallen crops) - 8
With the above configuration, when the setting button 51 (setting operating tool) is operated after the operation of the tilting control unit 73 (control unit) has been completed, the return control unit 74 moves the take-in reel 11 to the operating forward/backward position B1 using the electric cylinder 25 (position changing actuator), moves the take-in reel 11 to the operating height B2 using the lifting cylinder 26 (height changing actuator), and changes the rotational speed of the take-in reel 11 to the operating speed B3 using the electric motor 37 (rotational speed changing actuator).

When the setting button 51 (setting operation tool) is operated after the operation of the lowering control unit 73 (control unit) is finished, the return control unit 74 moves the cutting unit 3 to the operating lift height B4 using the lift cylinder 48 (lift actuator).

When the setting button 51 (setting operation tool) is operated after the operation of the lowering control unit 73 (control unit) is finished, the return control unit 74 operates the continuously variable transmission 45 (traveling transmission) to the operating speed position B5 by the speed change cylinder 69 (traveling speed change actuator).

(First Alternative Embodiment of the Invention)
10 and 11, the detection and storage of the operating lift height B4 of the reaping unit 3, the movement operation to the set lift height C4, and the movement operation to the operating lift height B4 may be eliminated. In this configuration, steps S11 and S12 may also be eliminated.

(Second Alternative Embodiment of the Invention)
10 and 11, the detection and storage of the operating speed position B5 of the continuously variable transmission 45, the operation to the set speed position C5, and the operation to the operating speed position B5 may be eliminated. In this configuration, steps S13 and S14 may also be eliminated.

(Third Alternative Embodiment of the Invention)
10 and 11, the detection and storage of the operating lift height B4 of the reaping unit 3, the operation of moving the reaping unit 3 to the set lift height C4, and the operation of moving the reaping unit 3 to the operating lift height B4 may be abolished, and the detection and storage of the operating speed position B5 of the continuously variable transmission 45, the operation of the reaping unit 3 to the set speed position C5, and the operation of the reaping unit 3 to the operating speed position B5 may be abolished. In the case of this configuration, steps S11, S12, S13, and S14 may also be abolished.

(Fourth Alternative Embodiment of the Invention)
After the operation of the lowering control unit 73 is completed, if the operator operates the operating lever 47 to raise the reaping unit 3 to a position where the ground contact sensor 61 does not contact the ground (steps S11 and S12 in Fig. 11), it may be determined that the reaping unit 3 is turning on a headland or the like, and the process may proceed to step S17 in Fig. 11. In this case, in step S17, the reaping unit 3 is not operated to the operating lift height B4.

(Fifth Alternative Embodiment of the Invention)
Assume that an operator performs one or more of the operations of steps S5 and S6, steps S7 and S8, steps S9 and S10, steps S11 and S12, and steps S13 and S14 shown in Figures 10 and 11.

In the above-mentioned state, if the operator presses the setting button 51 (step S15) or operates the clutch lever 29 to the threshing position A2 (stop position A3) (step S16), the state of the operations performed by the operator among the operations of steps S5, S6 to S13, S14 is left as it is, and operations to the operating front/rear position B1 to the operating speed position B5 are performed except for the operations performed by the operator.

To explain an example of the above-mentioned configuration, assume that an operator moves the take-in reel 11 from the set forward/backward position C1 (steps S5 and S6) and then presses the setting button 51 (step S15).

When the above-mentioned operation is performed, the take-in reel 11 is left in the position to which it was moved from the set front-rear position C1.
The take-in reel 11 is moved to an operating height B2 stored in the memory unit 70, the rotational speed of the take-in reel 11 is moved to an operating speed B3 stored in the memory unit 70, the cutting unit 3 is moved to an operating lifting height B4 stored in the memory unit 70, and the continuously variable transmission 45 is operated to an operating speed position B5 stored in the memory unit 70.

(Fifth Alternative Embodiment of the Invention)
The setting button 51 may be provided on the gear shift lever 46 instead of the operation lever 47, or may be provided on an operation panel (not shown) provided on the driver's unit 4.
The front button 53 and the rear button 54 may be provided on the gear shift lever 46 instead of on the operation lever 47, or may be provided on an operation panel (not shown) provided on the driver's unit 4.
The up button 55 and the down button 56 may be provided on the gear shift lever 46 instead of on the operation lever 47, or may be provided on an operation panel (not shown) provided on the driver's unit 4.

The present invention can be applied to harvesters in which a raking reel is installed in the harvesting section.

3 Reaping unit 11 Scraping reel 25 Electric cylinder (position changing actuator)
26 Lifting cylinder (height change actuator)
28 Harvesting and threshing clutch (working clutch)
37 Electric motor (rotation speed change actuator)
45 Continuously variable transmission (travel transmission)
46 Gear shift lever (gear shifting device)
47 Operating lever (lifting operation tool)
48 Lift cylinder (lift actuator)
51 Setting button (setting operation tool)
53 Front button (position control device)
54 Rear button (position operation tool)
55 Up button (height control)
56 Down button (height control)
59 Speed dial (rotation speed control device)
69 Variable speed cylinder (travel speed change actuator)
70 Memory unit 73 Falling control unit (control unit)
74 Return control unit 79 Setting front-rear position adjustment dial (setting front-rear position adjustment tool)
80 Set speed position adjustment dial (set speed position adjustment tool)
B1 Front-rear position during operation B2 Height during operation B3 Speed during operation B4 Lifting height during operation B5 Speed position during operation C1 Set front-rear position C2 Set height C3 Set speed C4 Set lifting height C5 Set speed position P2 Axis

Claims (15)

A reaping unit that harvests crops in a field by having a raking reel that is driven to rotate around an axis along the left-right direction and raking the crops in the field backward;
a position changing actuator capable of changing the position of the raking reel forward and backward relative to the reaping unit;
A height changing actuator capable of changing the height of the raking reel up and down relative to the reaping unit;
a rotation speed change actuator capable of changing the rotation speed of the take-in reel;
A setting operation tool that can be manually operated is provided,
A harvester is provided with a control unit that, when the setting operating device is operated, moves the scavenging reel to a preset forward/backward position using the position change actuator, moves the scavenging reel to a preset height using the height change actuator, and changes the rotational speed of the scavenging reel to a preset speed using the rotational speed change actuator. The harvester according to claim 1, which is equipped with a set front-rear position adjustment device that can be manually operated to adjust the set front-rear position. A position manipulation tool that can be manipulated manually is provided,
The harvester according to claim 1 , wherein when the position manipulation device is manipulated, the position change actuator operates based on the manipulation of the position manipulation device, taking precedence over the control unit. A height control device that can be operated manually is provided,
The harvester according to claim 1 , wherein when the height operation device is operated, the height change actuator operates based on the operation of the height operation device, taking priority over the control unit. A rotation speed control device that can be operated manually is provided,
The harvester according to claim 1 , wherein when the rotation speed operation device is operated, the rotation speed change actuator operates based on the operation of the rotation speed operation device, taking precedence over the control unit. A lifting actuator capable of lifting and lowering the reaping unit is provided,
The harvester according to claim 1 , wherein when the setting operation tool is operated, the control unit causes the lifting actuator to move the reaping unit to a preset lifting height. A lifting device that can be operated manually is provided,
The harvester according to claim 6 , wherein when the lifting/lowering operation device is operated, the lifting actuator operates based on the operation of the lifting/lowering operation device, taking priority over the control unit. The harvester according to claim 7, wherein the setting operation tool is provided on the lifting operation tool. A travel speed change device and a travel speed change actuator capable of changing the travel speed by operating the travel speed change device are provided.
The harvester according to claim 1 , wherein when the setting operation tool is operated, the control unit operates the traveling speed change device to a preset set speed position by the traveling speed change actuator. The harvester according to claim 9, which is provided with a set speed position adjustment device that can be manually operated to adjust the set speed position. A manually operable gear shifter is provided,
The harvester according to claim 9, wherein when the speed change device is operated, the travel speed change actuator operates based on the operation of the speed change device, taking priority over the control unit. a memory unit is provided which, when the setting operation tool is operated, stores a front-rear position of the take-in reel when the setting operation tool is operated, a height of the take-in reel when the setting operation tool is operated, and a speed of the take-in reel when the setting operation tool is operated;
A harvester as described in claim 1, further comprising a return control unit which, when the setting operating device is operated after the operation of the control unit has ended, moves the take-up reel to the forward/backward position during operation using the position change actuator, moves the take-up reel to the operating height using the height change actuator, and changes the rotational speed of the take-up reel to the operating speed using the rotational speed change actuator. A lifting actuator capable of lifting and lowering the reaping unit is provided,
When the setting operation tool is operated, the control unit moves the reaping unit to a preset lift height by the lift actuator,
When the setting operation tool is operated, the memory unit stores the lift height of the reaping unit at the time of operation of the setting operation tool,
The harvester according to claim 12, wherein when the setting operation tool is operated after the operation of the control unit has ended, the return control unit causes the lifting actuator to move the reaping unit to the lifting height during operation. The vehicle is provided with a travel speed change device and a travel speed change actuator that can change the travel speed by operating the travel speed change device,
When the setting operation tool is operated, the control unit operates the traveling speed change device to a preset set speed position by the traveling speed change actuator,
When the setting operation tool is operated, the storage unit stores an operating speed position of the traveling transmission device at the time of operating the setting operation tool,
The harvester according to claim 12, wherein when the setting operation tool is operated after the operation of the control unit has ended, the return control unit operates the traveling speed change actuator to move the traveling speed change device to the operating speed position. The reaping unit is provided with a working clutch capable of transmitting and interrupting power,
The harvester according to any one of claims 1 to 14, wherein when the working clutch is operated to a disengaged state, operation of the control unit is stopped.

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