KR20110047121A - combine - Google Patents

Abstract

PURPOSE: A combine is provided to perform two kinds of operations about a cutting clutch and a threshing clutch by the operation of one clutch operation lever. CONSTITUTION: A combine comprises a clutch operation lever(20), a joint(32), a detent member(25), and a passage tool(45). A clutch-off operating position, a threshing clutch-on operating position, and both clutch-on operating position are arranged in a linear line. The detent member combines the joint with an engaged part(31) and supports the clutch operation lever if the clutch operation lever is placed on the clutch-off operating position, threshing clutch-on operating position, and both clutch-on operating position.

Description

Combine {COMBINE}

The present invention relates to a combine configured to be able to perform two types of operations, on and off of a mowing clutch and on and off of a threshing clutch, by operation of one clutch operating lever.

Moreover, this invention is provided with the threshing clutch which interrupts the driving force from an engine to a threshing processing part, and is provided with the operation tool which can operate in the on position which sets this threshing clutch in the on state, and the off position which sets in the off state. The present invention relates to a combine, and more particularly, to a technique for controlling the rotational speed of an engine.

Furthermore, the present invention relates to a combine having a harvesting clutch for intermittent driving force to the harvesting pretreatment unit, a threshing clutch for intermittent driving force to the threshing processing unit, and a manipulator which is operated artificially. Relates to a technique for controlling the mowing clutch and threshing clutch with a single control.

Conventionally, as a combine configured so that two types of operations, on and off of a mowing clutch and on and off threshing clutch, can be performed by operation of one clutch operation lever, as shown in FIG. 10 of Patent Document 1, a clutch A lever guide of the operation lever has a threshing clutch operating region for turning the threshing clutch on and off, and a mowing clutch operating region provided in a direction orthogonal to the threshing clutch operating region. The swinging clutch is turned on at the front end position when the swinging operation is performed in the front-rear direction and the front end swinging operation is performed from the rear end of the clutch off operation position. The mowing clutch is turned on when the clutch operating lever is swung to the rightward direction from the threshing clutch on operation position at the front end position of the threshing clutch operation region.

In the above-described operation of the clutch operation lever, in order to turn on both the mowing clutch and the threshing clutch, it is necessary to operate the clutch operation lever in two directions, the front-rear direction and the left-right direction. By the way, normally, when starting work, it is hard to operate only a threshing clutch, without turning on a mowing clutch, and it is cumbersome to operate a clutch operation lever to L shape.

Therefore, only by operating the clutch operation lever back and forth (linear operation),

(1) "Clutch off operation state" which sets clutch operation lever to both clutch off of mowing clutch and threshing clutch

(2) "Threshing clutch on operation state" which turns off cutting clutch and turns on threshing clutch only

(3) `` both clutch on operation state '' with both clutches on

It is thought to be able to operate with. In this case, it is necessary to employ a detent mechanism for fitting the engaging portions such as rollers and balls to the notches (engaged portions) so as to recognize each operating position of the clutch operating lever.

Moreover, as a combine comprised as mentioned above, patent document 2 has described the control form which sets an accelerator means to rated rotation and sets a work clutch to an on state, when a work start instruction is commanded.

Specifically, a belt tension type threshing clutch is provided as a work clutch for interrupting the power transmitted from the engine to the threshing apparatus, and an accelerator device is provided as an accelerator means for switching the engine rotation speed to an idling rotation speed and a rated rotation speed. It is. This patent document 2 is equipped with the operating system which operates an accelerator apparatus via an accelerator cable, when an accelerator operation tool is artificially operated and the accelerator operation tool is operated by operation of an electric motor. The electric motor is configured not only to operate the accelerator operating tool but also to control the threshing clutch.

Then, when the operation of operating the threshing clutch in the on state by the electric motor is started while the accelerator operating tool is in the idling position, the accelerator operating tool is moved by the contact of the operation unit which operates in conjunction with the on operation of the threshing clutch. And the position of the rated rotational speed is reached, and the engine is also set at the rated rotational speed.

In addition, Patent Document 1, as a combine configured as described above, performs the on-off operation of the threshing clutch by the operation of the single clutch operation lever in the front-rear direction, and in the on-position of the threshing clutch in the left and right direction of the clutch operation lever. The structure which turns on and off a harvesting clutch by operation is described. In this patent document 1, the threshing clutch is turned on and off by the maneuvering force in the front-rear direction of the clutch operating lever, the operation of the clutch operating lever in the left and right direction is detected by a switch, and the driving force of the actuator is turned on. OFF is performed.

As the same combine, Patent Document 3 includes a single threshing and harvesting clutch lever, which is operated in the front-rear direction so as to turn on the threshing clutch and the threshing clutch and the first operating position to turn off the threshing clutch and the harvesting clutch. It is comprised so that it can operate to a 2nd operation position and the 3rd operation position which turns a threshing clutch and a mowing clutch on. In addition, the operation guide of the threshing / retraction clutch lever is formed by offsetting the operation region of the second operation position from the first operation position and the third operation position from the second operation position.

In this patent document 3, two lever position detection switches are provided, and a motor is operated based on the detection of this lever position detection switch, and the on-off operation of a threshing clutch and a mowing clutch is performed.

Japanese Patent Application Laid-Open No. 2002-171822 Japanese Patent Application Publication No. 2009-89618 Japanese Patent Application Publication No. 2005-117953

The operability is remarkably improved if the clutch operating lever can be operated linearly by adopting a detent mechanism, but normally, the operation of the threshing clutch on operation in the above (2) is made to pass through the lever of the above (1) at the start of the operation. Operate from the position to the lever position of (3). However, whenever passing through the lever position of (2), the feeling of operation resistance by the detent mechanism is greatly disturbed at the lever position of (2).

In order to reduce or eliminate this, it is conceivable to reduce the notch, but if it is made too small, the lever position of (2) will not be felt, and the lever position will be immediately changed when the gas vibration during operation or unexpected contact with the clutch operation lever is performed. There is a problem in that it is not possible to immediately recognize that the lever position has moved.

In the present invention, the clutch operation lever can be operated linearly, and the intermediate operation is performed without changing the engagement portion for engaging the engagement portion of the detent mechanism from the clutch off operation state at the start of the operation to both clutch on operation states. It is an object of the present invention to provide a combine that can be operated at both clutch on operation positions without feeling the position (threshing clutch on operation position).

Moreover, as described in patent document 2, when starting a harvest operation by a combine, the work clutch is set to the on state and engine rotation is set to the rated rotation speed. In addition, in a harvesting operation, it is not necessary to necessarily operate an engine at a rated rotational speed, for example, depending on a rice crop, you may want to operate an engine at a rotational speed slightly lower than a rated rotational speed. This is effective in improving fuel economy.

In the case of setting the engine rotational speed according to the condition, the rotational speed becomes a roughly determined value, but as described in Patent Document 2, when the accelerator operating tool is forcibly operated, after the engine rotation reaches the rated rotational speed For this reason, there is room for improvement in the operation of returning the accelerator operating tool to the position required by the operator.

Another object of the present invention is to easily set at the rotational speed requiring engine rotation without damaging the good point of setting the engine rotation to the rated rotational speed at the same time as setting the working clutch on with the start of the harvesting operation. The reason for this is to reasonably configure the combine which can be set.

In addition, with a harvesting pretreatment unit and threshing unit, for example, when harvesting rice, the vehicle body is introduced into a pavement, the threshing processing unit is operated, and the harvesting pretreatment unit is operated. Start running. In addition, in the self-detachment combine, when the harvesting operation is started, steering control of the vehicle body is carried out to guide the tip of the divider of the harvesting pretreatment unit between the upright grain bags of the pavement, and the height of the harvesting pretreatment unit is adjusted to appropriately adjust the cutting height. Doing.

As described above, the operator pays attention to the steering control of the vehicle body, the height adjustment of the mowing pretreatment unit, and the like. Thus, for example, as described in Patent Document 1 and Patent Document 3, threshing is performed by the operation of a single lever. In the case of controlling the clutch and the mowing clutch independently, the harvesting operation may be started in a state where only the threshing clutch is turned on.

Such misoperation requires attention to a plurality of operations as described above at the start of the harvesting operation. Therefore, the threshing processing unit performs an operation at the point of time when the threshing clutch is turned on, and the operation sound or vibration accompanying the operation. Since it is transmitted to this worker, it is thought that the cause is a mistaken recognition that the mowing clutch is also on-operated.

Therefore, it is also conceivable to configure the threshing clutch and the mowing clutch on and off at the same time by a single operation lever. For example, a so-called head which artificially supplies a grain table to the threshing processing unit by turning on only the threshing clutch in a stopped state. Threshing from the viewpoint of carrying out headland threshing operation, or from the viewpoint of not cutting the upright grain stand in contact with the cutting pretreatment part when the vehicle body reaches the headland and lifts and turns the harvesting pretreatment part during the harvesting operation. It is also necessary to form the clutch only in the on state.

Another object of the present invention is to rationally configure a combine that can reliably turn on the harvesting clutch at the start of the harvesting operation and, if necessary, to turn on only the threshing clutch.

[Configuration of First Invention]

According to a first aspect of the present invention, there is provided a threshing clutch for regulating the drive system of the mowing part and a threshing clutch for regulating the drive system of the threshing part. When it is turned off and is operated in the threshing clutch on operation position, the harvesting clutch is in an off state and only the threshing clutch is in an on state. In combines configured to be in an on state,

The clutch off operation position, the threshing clutch on operation position, and the clutch on operation position are arranged on one straight line,

If the clutch operation lever is located at the clutch off operation position, the threshing clutch on operation position, and both the clutch on operation positions, the engaging portion is provided with a detent mechanism that engages with the engaged portion and holds the clutch operation lever.

At least one of the clutch operation levers during the operation from the clutch off operation position to both the clutch on operation positions and the operation of the clutch off operation position from the clutch off operation position to the clutch off operation position. Is provided at the threshing clutch on operation position, and the passage mechanism which does not engage the said engaging part to the to-be-engaged part is provided.

[Operation of the First Invention]

According to the first aspect of the invention, when the clutch operating lever is operated from the clutch off operating position toward both the clutch on operating positions or from both the clutch on operating position toward the clutch off operating position, the clutch operating lever is operated by the threshing clutch on operation. Since a passage mechanism is provided so as not to engage the engaging portion to the engaged portion when passing through the position, the detent mechanism when the clutch operating lever passes the threshing clutch operating position in the middle of the operation between the clutch off operating position and both clutch on operating positions. It is possible to operate without having to increase the operation resistance (operation resistance by coupling part to a to-be-engaged part) by positioning by this.

According to the first aspect of the invention, when the clutch operating lever is operated from the clutch off operating position in the reverse direction to both the clutch on operating positions (the clutch off operating position from both the clutch on operating positions), or the clutch off operation from both the clutch on operating positions. When operating in the opposite direction from the position (both clutch on operation position from clutch off operation position), the passing mechanism does not work in the threshing clutch on operation position in the middle, and the detent mechanism is operated to engage the engaging portion with the engaged portion. do. Therefore, it is possible to recognize that the clutch operation lever is located at the threshing clutch on operation position by the operation resistance (operation resistance by engaging the engaging portion to the engaged portion) by the positioning of the detent mechanism. Since it can hold | maintain in threshing clutch on operation position, the threshing clutch on operation state which turns off a mowing clutch and turns on only a threshing clutch can be obtained without difficulty.

[Effect of 1st invention]

Therefore, according to the first invention, the clutch operating lever is operated in a straight line shape when the clutch operating lever is operated from the clutch off operating position to both the clutch on operating positions or from both the clutch on operating position to the clutch off operating position. It is possible to operate lightly and comfortably without discomfort.

[Configuration of Second Invention]

According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the passage mechanism is operated from the clutch off operation position of the clutch operation lever to the both clutch on operation positions, or the clutch off operation from both the clutch on operation positions. In any of the operations to the position, a cam for retracting the engaging portion from the engaging portion so that the engaging portion does not engage the engaging portion even if the clutch operating lever is located at the threshing clutch on operating position. A member is provided.

[Effects of the Second Invention]

According to the second aspect of the invention, when the clutch operating lever is positioned at the threshing clutch on operation position, the cam member prevents engagement of the engaging portion to the engaged portion by the cam member so that the engaging portion does not engage the engaged portion. As a result, the engaging portion is guided to the cam member in the middle of the operating direction of operating the clutch operating lever from the clutch off operating position to both the clutch on operating position or from the both clutch on operating position to the clutch off operating position, whereby the engaging portion is engaged. Since the clutch operation lever is smoothly moved, the clutch operation lever can be operated from the clutch off operation position to both the clutch on operation position or from the clutch on operation position to the clutch off operation position in one operation sense. Can be.

Then, by retracting the cam member from the moving path of the engaging portion, it becomes possible to engage the engaging portion with the engaged portion at the threshing clutch on operation position. In this case, when operating the clutch operating lever from both the clutch on operating positions to the clutch off operating position, as in the main embodiment, the engaging portion is engaged to the engaged portion at the threshing clutch on operating position. Alternatively, when the clutch operation lever is operated from the clutch off operation position to both the clutch on operation positions, the engaging portion is engaged at the threshing clutch on operation position to the engaged portion.

[Configuration of Third Invention]

According to a third aspect of the invention, in the configuration of the first invention or the second invention, the clutch operation lever is in the threshing clutch on operation position when the clutch operation lever is operated from the clutch off operation position to the clutch on operation position. The clutch operating lever is not engaged to the engaged portion, and the clutch operating lever is moved to the threshing clutch on operating position when the clutch operating lever is operated from both the clutch on operating position to the clutch off operating position. When positioned, the passage mechanism is configured to engage the engaging portion.

[Effects of Third Invention]

Usually, in a harvesting operation by a combine, harvesting and threshing cannot be carried out while driving all the upright grains of a pavement, and what is cut | disconnected and left in the corner part of a pavement or a pavement occurs. Therefore, it is necessary to cut these leftover grained upright grains by hand and thresh headland. Therefore, for this case, a work mode in which only the threshing clutch is turned on while the cutting clutch is turned off is essential.

According to the third aspect of the invention, in a roadway for operating the clutch operating lever from the clutch off operating position to both the clutch on operating positions, the passage mechanism acts without stopping the movement of the clutch operating lever in the threshing clutch on operating position on the way. The detent mechanism acts at the intermediate threshing clutch on operation position in the retreat which can operate from both the clutch off operation position to both the clutch on operation positions, and operates from both clutch on operation positions to the clutch off operation position. Since the position can be positioned at the threshing clutch on operation position, it is not necessary to switch the passage mechanism into a separate acting state and a non-acting state, and the threshing clutch can be turned on only by operating the clutch operating lever.

Then, the upright grain stand cut off at the corners of the dungarea and the pavement is operated by the assistant assisting the headland by preparing the headland during the harvesting operation by the combine. Since the lever can be operated to the threshing clutch on operation position and the headland threshing can be performed continuously, the threshing operation by the combine running and the headland threshing operation can be carried out continuously, and threshing harvesting operation by the combine with good workability Has come to be able to do. There is a technical significance here to operate the passing mechanism in the path and the detent mechanism in the return path.

Moreover, the characteristics of this invention are equipped with the threshing clutch which interrupts the driving force from an engine to a threshing processing part, and the operation tool which can operate to the on position which sets this threshing clutch to the on state, and the off position which sets to the off state is provided. It is a combine having

A rotation speed setting tool for setting the rotation speed of the engine is provided, and when the operating tool is set to the on position, the engine is set at the rated rotation speed while the setting position of the rotation speed setting tool is maintained. Setting the engine to the rotational speed set in the rotational speed setting port when detecting that the rotational speed setting port is operated or setting a predetermined switch after operating the engine at the rated rotational speed. An engine rotation control means is provided.

According to this configuration, when the threshing clutch is set to the ON state by the operation of the operating tool, the engine rotation control means sets the engine at the rated rotation speed. Thereby, it is not necessary to perform both operation of threshing clutch and operation of engine rotation speed. In addition, in a situation where the engine is operated at the rated rotation speed, the set position of the rotation speed setting port is maintained, so that the engine is operated at the rotation speed already set by controlling the engine at the rotation speed following the setting of this rotation speed setting port. It is also possible.

Further, the engine rotation control means operates the engine at the rotational speed set by the rotational speed setting port when the rotational speed setting tool is slightly operated after setting at the rated rotational speed, or rotates when a predetermined switch is operated. The engine is operated at the rotational speed set by the speed setting port, and the operator can operate the engine at the rotational speed already set.

Therefore, the combine which can be easily set to the rotation speed which requires engine rotation, without damaging the favorable point which sets the engine clutch to a rated rotation speed at the time of setting a work clutch on with the start of a harvesting operation. This was made up.

The present invention is provided with a mowing clutch for intermittent driving force from the engine to the mowing preprocessing unit, and the clutch control means for setting the threshing clutch and the mowing clutch to an on state when the operation tool is operated to the on position. good.

According to this, when the operation tool is operated to the on position, the clutch control means sets the threshing clutch and the harvesting clutch to the on state, so that the trouble of turning on the harvesting clutch can be omitted.

The present invention is an operation in which the operating tool is configured to be operable in the off position and the operating region spanning the harvesting work position, the threshing working position is arranged at an intermediate position of the operating region, and an operation of detecting the operating position of the operating tool. With position sensor,

The clutch control means does not set the threshing clutch to an on state when passing through the threshing work position at the time of operation from the off position to the harvesting work position based on a detection result of the operation position sensor. When the harvesting work position is reached, the harvesting clutch and the threshing clutch are set to the on state, and when the operating tool is operated to the threshing working position, only the threshing clutch is set to the on state,

The engine rotation control means sets the engine at a rated rotation speed when the operation tool reaches the harvesting work position, and then maintains the engine at the rated rotation speed even when the operating tool is operated at the threshing work position. Also good.

According to this, when the operating tool is operated from the off position to the harvesting work position, the clutch control means sets the threshing clutch and the mowing clutch to the on state based on the detection of the operation position sensor, and the engine rotation control means Set the engine to the rated speed.

And the threshing clutch is not set to the on state when the operating tool passes through the intermediate position of the operating region operated from the off position to the harvesting work position. In addition, when the operation tool is operated by returning from the harvesting work position to the threshing work position, the clutch control means sets the threshing clutch to the off state and sets the threshing clutch to the on state based on the detection of the operation position sensor ( And the engine rotating means maintains the engine at the rated rotational speed.

That is, even if the single operation tool is operated from the off position to the threshing working position, only the threshing clutch does not reach the on state, and when the threshing clutch and the mowing clutch are on together when the threshing clutch is operated from the off position to the harvesting work position. The engine also runs at its rated rotational speed. Thereafter, the harvesting clutch is set to the off state while the threshing clutch is kept on by returning from the harvesting work position to the threshing working position, and the engine rotating means maintains the engine at the rated rotational speed to stop the harvesting. Threshing work (headland threshing work) in Esau becomes possible.

Moreover, the characteristics of this invention are the combine equipped with the mowing clutch which clamps the driving force to the mowing preprocessing part, the threshing clutch which controls the driving force to the threshing processing part, and the operation tool operated artificially,

By the initial operation from the groove state in which the harvesting clutch and the threshing clutch are in an off state, the operation tool is released to the harvesting operation mode in which the harvesting clutch and the threshing clutch are turned on, and by the subsequent continuous operation, The clutch control means which exhibits the threshing operation | movement mode which turns off the said harvesting clutch in the off state, maintaining the threshing clutch on-state is provided.

According to this constitution, when the harvesting operation is performed, the operation tool is initially operated from the home state, and the harvesting operation mode is enabled in which the threshing clutch and the harvesting clutch are turned on, thereby enabling harvesting. Subsequently, the threshing operation mode which turns off a mowing clutch with the holding | maintenance state of a threshing clutch OFF by the continuous operation after this is exhibited. In this threshing operation mode, a grain standing up against the intention of an operator at the time of turning of a vehicle body, for example. The problem of mowing the stage can also be prevented. As a result, at the start of the harvesting operation, a combine was formed in which the operation of the harvesting clutch was reliably eliminated by excluding an incorrect operation, and the operation of only the threshing clutch was also possible as necessary.

The present invention is configured such that the operation tool is operable in an operating region that extends from the off position corresponding to the home state to the harvesting work position that exhibits the harvesting work mode, and the threshing work mode at an intermediate position of the operating region. Threshing working position which exhibits a thru | or is arrange | positioned, and is provided with the operation position sensor which detects the operation position of the said operation tool,

The clutch control means does not set the threshing clutch to an on state when passing the threshing work position at the time of operation from the off position to the harvesting work position based on a detection result of the operation position sensor. The harvesting clutch and the threshing clutch may be set to the on state when the harvesting work position is reached, and only the threshing clutch may be set to the on state when the operation tool is operated to the threshing working position.

According to this, when the operating tool is operated from the off position to the harvesting work position, the clutch control means sets the threshing clutch and the mowing clutch to the on state based on the detection of the operating position sensor, and the operating tool is moved from the off position. The threshing clutch is not set to the on state even when passing through the intermediate position of the operating area operated to the harvesting work position. When the operating tool is operated to return to the threshing work position from the harvesting work position, the clutch control means sets the threshing clutch to the off state and sets the threshing clutch to the on state based on the detection of the operation position sensor (holding) )do.

That is, even if the single operation tool is operated from the off position to the threshing working position, only the threshing clutch does not reach the on state, and when the threshing clutch and the harvesting clutch are both on when the threshing clutch is operated from the on position to the harvesting work position. To reach. Thereafter, the harvesting clutch can be set to the off state while the threshing clutch is kept on by returning from the harvesting work position to the threshing working position.

The present invention may include an actuator for controlling the mowing clutch and the threshing clutch, and the clutch control means may operate the actuator based on a detection signal from an operation position sensor.

According to this, an actuator can be operated based on the detection result of an operation position sensor, and it can perform the interruption of a threshing clutch and a mowing clutch easily.

The present invention is provided with a threshing depth operating unit for adjusting threshing depth for automatically setting the threshing depth of the grain table supplied to the threshing processing unit based on the ear tip position of the grain table supplied to the threshing processing unit. The threshing depth adjustment may be started by the threshing depth operating portion when the harvesting operation mode is started.

According to this, the threshing depth control which starts a threshing depth operation part automatically starts at the time of a harvesting operation, and a grain threshing part is supplied to a threshing processing part at an optimal threshing depth, and an efficient threshing is performed without an operator operating an artificial switch. To realize the work.

The present invention includes an engine for transmitting power to the harvesting pretreatment unit and threshing processing unit, and an engine control unit for controlling the rotational speed of the engine, wherein the engine control unit is operated when the harvesting operation mode is started by operation of the operating tool. The engine may be set at a rated rotation speed.

According to this, in the harvesting operation mode, the engine is driven at the rated rotational speed, so that the driving force required for the harvesting operation is supplied to the harvesting pretreatment and the threshing processing unit without any man-made operation of the switches artificially, so that the operation is performed without any difficulty. Can be done.

1 is an overall side view of a combine.
2 is a block diagram showing a power transmission system to a harvesting unit and a threshing unit.
3 is an essential part side view showing an operation structure when the mowing clutch and threshing clutch are in an off state;
4 is an essential part side view showing the operation structure when the harvesting clutch is in an off state and the threshing clutch is in an on state;
Fig. 5 is a side view of an essential part showing the operation structure when the mowing clutch and threshing clutch are in an on state;
Fig. 6 is a partially broken side view showing the main part of the operating structure of the clutch operating lever when the mowing clutch and threshing clutch are in an off state.
7 is a partial plan view showing a driving unit of a combine;
8 is a partial vertical rear view showing the main part of the operating structure of the clutch operating lever;
9 is an assembled exploded perspective view of the clutch operation lever.
(A) is a side view which shows the relationship between a clutch operation lever and a passage mechanism, when a clutch operation lever is a clutch off position and a threshing clutch in the clutch off position, (b) is a clutch operation lever in a clutch off operation position. And a side view showing the relationship between the clutch operating lever and the passage mechanism when positioned between the threshing clutch on operation position in which only the threshing clutch is turned on.
Fig. 11A is a side view showing the relationship between the clutch operating lever and the passage mechanism when the clutch operating lever is operated in both the clutch on operating position directions and positioned at the threshing clutch on operating position where only the threshing clutch is turned on; b) is a side view showing the relationship between the clutch operating lever and the passage mechanism when the clutch operating lever is positioned between the threshing clutch on operating position and both the clutch on operating positions where the threshing clutch and the harvesting clutch are turned on;
Fig. 12 is a side view showing the relationship between the clutch operating lever and the passage mechanism when the clutch operating lever is positioned at both clutch on operating positions in which the threshing clutch and the harvesting clutch are turned on;
FIG. 13A shows the clutch operation lever and the passage mechanism when the clutch operation lever is positioned in the threshing clutch on operation position in which the harvesting clutch is turned off and only the threshing clutch is turned on by operating the clutch operation lever in the direction of the clutch off operation position; Side view showing the relationship, (b) is a side view showing the relationship between the clutch operating lever and the passage mechanism when the clutch operating lever is operated from the threshing clutch on operation position to the front of the clutch off operation position where the threshing clutch and the cutting clutch are turned off. .
It is a block diagram which shows the principal part of the control system of a combine.
(A), (b) is a side view which shows another embodiment of a passage mechanism.
It is a side view of a combine.
17 is a plan view of a combine.
It is a figure which shows typically the transmission structure of a combine.
19 is a plan view of the driving unit;
20 shows the side and front of a steering lever.
21 is a plan view showing an operation region of the work clutch lever.
22 is a plan view of a front operation panel and a side operation panel.
It is a side view which shows the operation position of a work clutch lever, and a detection form.
It is a figure which shows typically the operation structure of a threshing clutch and a harvesting clutch.
25 is a front view illustrating an arrangement of ear tip sensors;
26 is a block circuit diagram showing a configuration of a control system.
27 is a flowchart showing a control routine.
Fig. 28 is a flowchart showing a control routine of still another embodiment (a).
29 is a plan view showing an operation region of the work clutch lever of still another embodiment (b);

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing. 1 is a side view of a combine, 1 is a driving unit, 2 is a harvesting unit, 3 is a threshing unit, 4 is a grain tank, 5 is a crawler type traveling device. Reference numeral 6 denotes a feed chain, and reference numeral 7 denotes a longitudinal conveyance mechanism for joining the grain zones mowed by the cutting unit 2 and sending it to the feed chain 6.

The transmission structure to the threshing part 3 and the harvesting | reaping part 2 is demonstrated. As shown in FIG. 2, the hydrostatic stepless speed changer 80 is provided in the mission case 9, and the input shaft of the hydrostatic stepless speed changer 80 is extended inside the mission case 9. The input shaft 10 and the engine 11 are linked with the transmission belt 12, and the engine 11 and the threshing part 3 are comprised so that rotation is possible with the transmission belt 13, and threshing with respect to the transmission belt 13 The clutch 14 is provided. On the other hand, in the mission case 9, the output shaft 16 to the harvesting | reaping part 2 is provided in parallel with the input shaft 10, and the harvesting gear mechanism 17 is provided in the output shaft 16. As shown in FIG. The transmission belt 18 is provided over the output shaft 16 and the input part of the harvesting | reaping part 2, and the harvesting clutch 19 is provided with respect to the transmission belt 18. As shown in FIG.

The operation structure of the threshing clutch 14 and the harvesting clutch 19 is demonstrated. The belt tension threshing clutch 14 and the belt tension mowing clutch 19 shown in FIGS. 3-5 are comprised so that the clutch operation lever 20 shown in FIG. 6 may turn on and off by an artificial operation. .

The threshing clutch 14 and the harvesting clutch 19 are comprised by the tension type | mold clutch driven by the electric motor 21, as shown to FIG. These clutches 14 and 19 are clutch operating levers 20 that can swing around the transverse axial center P along the guide grooves 24 formed in the steering box 23 as shown in FIGS. 7 and 8. It is comprised so that it may turn on and off by the artificial operation by.

As shown in Fig. 6, the clutch operation lever 20 is at the rear position to the clutch off operation position OFF of the threshing clutch 14 and the harvesting clutch 19. As shown in Figs. When rocking forward of this clutch-off operation position OFF, the threshing clutch on-operation position ON1 which turns threshing clutch 14 on in an intermediate position will be set, and threshing clutch 14 and mowing clutch ( Both clutches 14 and 19 of 19 are turned to both clutch on operation positions ON2. When the clutch operation lever 20 is in the threshing clutch on operation position ON1, only the threshing clutch 14 is turned on, and the mowing clutch 19 is in an off state.

The clutch off operation position OFF, threshing clutch on operation position ON1, and both clutch on operation position ON2 are arrange | positioned in a straight line shape so that it may be located in one straight line in plan view. The detent mechanism 25 acts at each position of the clutch off operation position OFF, the threshing clutch on operation position ON1 and the clutch on operation position ON2 in the clutch operation lever 20, thereby operating the clutch. Positioning of the lever 20 is comprised possible.

The clutch operation lever 20 is supported by the support plate 26 provided in the base so as to be able to swing around the transverse shaft center P via the pins 27. That is, the cylinder boss 28 which penetrates the pin 27 is fixedly installed in the support plate 26, and the pin 27 fixed to the clutch operation lever 20 is inserted into the cylinder boss 28, and the beta pin is penetrated. The fall prevention is performed by (29).

In the support plate 26, as shown in Figs. 8 and 9, a fan-shaped hole 30 constituting the detent mechanism 25 is formed, and a positioning notch on the upper part of the fan-shaped hole 30. Three (31) (equivalent to a to-be-joined part) are formed.

A coupling member 37 provided with a coupling cylinder 32 (corresponding to a coupling portion) coupled to the notch 31 is provided in the clutch operation lever 20. The long hole 33 is formed long in the clutch operation lever 20. The pin 34 with a flange is inserted into the coupling cylinder 32, and the pin 34 with a flange is prevented from coming out with the beta pin 35. As shown in FIG.

The coupling cylinder 32 is rotatably supported by a flanged pin 34 which is approximately semicircular in side view and U-shaped in front view, thereby engaging the coupling member 37. ). In the lower part of the engaging member 37, the U-shaped member 38 and the support lever 40 are fixed in the planar view for stopping vibration of the pin 34 with a flange. A coil spring 39 provided with a holding plate 41 having a bottom plate attached to the clutch operation lever 20 to hold the holding lever 40 so as to be movable upward and downward, and built into the holding cylinder 41. The support lever 40 is urged upwards by this.

Thus, when the clutch operation lever 20 is operated, the engaging member 37 is coiled at each position of the clutch off operation position OFF, the threshing clutch on operation position ON1, and both clutch position operation positions ON2. The clutch operating lever 20 is positioned by being pushed by the spring 39 and engaging the coupling cylinder 32 to the notch 31.

The switch press cam part 42 is formed below the horizontal axis P of the clutch operation lever 20. The support plate 26 is provided with a threshing switch 43 and a harvesting switch 44. When the clutch operation lever 20 is located at the clutch off operation position OFF, the threshing switch 43 and the harvesting switch 44 are both in an off state. When the clutch operation lever 20 is operated to the threshing clutch on operation position ON1, the switch piece 43a of the threshing switch 43 is pressed against the first cam portion 42a and the threshing switch 43 is turned on. . At this time, the mowing switch 44 is in the off state. When the clutch operation lever 20 is operated to both clutch on operation positions ON2, the threshing switch 43 is in an on state, and the switch piece 44a of the mowing switch 44 is pressed against the second cam portion 42b. The mowing switch 44 is also turned on.

The passage mechanism 45 is provided in the upper part of the said support plate 26. The passage mechanism 45 includes a cam member 46, a coil spring 47 having a pair of free ends 47a and 47b in contact with the engaging piece 46c of the cam member 46, and a support plate ( 26 and the cam member 46 which are penetrated and fixed to the cam pin 48 which wound the coil spring 47, and the support plate 26, and the free ends 47a and 47b of the coil spring 47 are fixed. Regulating pin 49 for regulating. The cam member 46 contacts the engagement member 37 (engagement cylinder 32) when the clutch operation lever 20 is operated toward both clutch on operation positions ON2 from the clutch off operation position OFF. The engagement member 37 when the 1st cam surface 46a which oscillates the member 46 forward, and the clutch operation lever 20 were operated toward the clutch off operation position OFF from both clutch on operation positions ON2. The second cam surface 46b for contacting the coupling cylinder 32 and swinging the cam member 46 backward, and one side of the coil spring 47 when the cam member 46 swings forward or swings backward. The engaging piece 46c which contacts the free end parts 47a and 47b of this is provided. When the cam member 46 swings forward (clockwise in FIG. 10), the free end portion 47a of the lower side of the coil spring 47 is restricted to the regulating pin 49 fixed to the support plate 26. When the free end 47b is lifted by the catching piece 46c to accumulate restoring force, and the cam member 46 swings backward (counterclockwise in FIG. 10), the free end of the upper end of the coil spring 47 ( The lower free end 47a is pushed down by the catching piece 46c while 47b) is regulated by the restricting pin 49 to accumulate restoring force. The first cam surface 46a when the cam member 46 is swinging forward passes when the first cam surface 46a passes through the intermediate notch 31 positioned at the threshing clutch on operation position ON1. Then, the notch 31 swings in a state below the notch 31 so as to cover the notch 31.

As shown in (a), (b) of FIG. 10, (a), (b) of FIG. 11, and FIG. 12, the clutch operating lever 20 is shifted from the clutch off operating position (OFF) to both clutch on operating positions. When operating until (ON2), the coupling cylinder 32 is connected to the passage mechanism 45 at the position of the clutch operation lever 20 before the threshing clutch on operation position ON1 (see FIG. 10 (b)). When contacting the first cam surface 46a of the cam member 46 and the clutch operating lever 20 passes through the threshing clutch on operation position ON1 (see FIG. 11 (a)), the coupling cylinder 32 The silver is pushed down from the notch 31 by the first cam surface 46a of the passage mechanism 45. Thereby, the operator who operates the clutch operation lever 20 can operate the clutch smoothly without feeling the operation load by the detent mechanism 25 in the clutch operation lever 20 at the threshing clutch on operation position ON1. The lever 20 can be operated toward both front clutch on operation positions ON2 beyond the threshing clutch on operation positions ON1. When the clutch operating lever 20 crosses the threshing clutch on operating position ON1 and passes the position before reaching both clutch on operating positions ON2 (see FIG. 11B), as shown in FIG. 12. , The cam member 46 is spaced apart from the coupling cylinder 32, and the cam member 46 is restored by the restoring force of the coil spring 47 to the original position (restoration of the coil spring 47 regulated by the regulating pin 49). Center position]. When the clutch operation lever 20 is operated to both the clutch on operation positions ON2, the engagement cylinder 32 of the detent mechanism 25 is engaged with the notch 31 to operate the operation load for moving the clutch operation lever 20. Since the (operating force) becomes large, the operator can feel that the clutch operation lever 20 has been operated at both clutch on operation positions ON2.

The threshing clutch 14 and the harvesting clutch 19 are as follows. 3 to 5, the clutch arms 52 and 62 which support the tension wheels 51 and 61 acting on the transmission belts 13 and 18 are provided. , 62, two rotary arms 50, 60 provided on a common rotary shaft 59, swing links 53, 63 connected to each rotary arm 50, 60, and a rotary shaft ( A fan gear 54 for rotating the fan 59, a pinion gear 55 meshing with the fan gear 54 to drive the fan gear 54, and an electric motor as an actuator provided with the pinion gear 55 ( 21 and interlocking rods 56 and 66 and stroke absorbing springs 57 and 67 which connect the swing links 53 and 63 and the clutch arms 52 and 62, respectively.

The operation structure for turning on and off the threshing clutch 14 is as follows. 10 and 11, when the clutch operation lever 20 operates from both the clutch off operation position OFF toward both the clutch on operation positions ON2, the clutch operation lever 20 rotates the threshing clutch on. When passing through the operating position ON1 (see FIG. 11A), the detent mechanism 25 is brought into an inactive state by the action of the passage mechanism 45, but the first operation of the clutch operating lever 20 is performed. The switch piece 43a of the threshing switch 43 is pressed against the cam portion 42a, and the threshing switch 43 is turned on. When the threshing switch 43 is turned on, this detection result is input to the control device 58, and the electric motor 21 is driven to rotate forward by the output from the control device 58 (shown in FIGS. 3 and 4). Pinion 55 rotates in a clockwise direction], clutch arm 53 is pulled up, and threshing clutch 14 is turned on (see FIG. 4). The rotation of the electric motor 21 stops when the angle detector 22 detects that the rotation shaft 59 has rotated to the state of FIG. 4.

When the clutch operation lever 20 is continuously operated to both clutch on operation positions ON2, the detent mechanism 20 acts and the clutch operation lever 20 is positioned. The threshing switch 43 remains on even when the threshing switch 43 is turned from the threshing clutch on operating position ON1 to both the clutch on operating positions ON2. When the clutch operating lever 20 becomes the both clutch on operating positions ON2, the clutch operation is performed. The switch piece 44a of the mowing switch 44 is pressed against the second cam portion 42b of the lever 20 so that the mowing switch 44 is turned on. When the mowing switch 44 is turned on, this detection result is inputted to the control device 58, and the electric motor 21 is further driven forward by the output from the control device 58, so that the clutch arm 62 is driven. It is pulled up and the mowing clutch 19 is turned on (refer FIG. 5). When the angle detector 22 detects that the rotation shaft 59 has rotated to the state of FIG. 5, the rotation of the electric motor 21 is stopped. As a result, the harvesting threshing operation can be started.

When operating the clutch operation lever 20 from both the clutch on operation positions ON2 to the clutch off operation position OFF, the passage mechanism 45 becomes inactive, and the intermediate threshing clutch on operation position ON1 is performed. In this case, the detent mechanism 25 is brought into the working state.

As shown in FIGS. 12 and 13 (a) and (b), when the clutch operation lever 20 is operated from both the clutch on operation position ON2 to the threshing clutch on operation position ON1, the cam Since the member 46 is located behind the middle notch 31, the engagement cylinder 32 of the detent mechanism 25 couples to the intermediate notch 31 (refer FIG. 13 (a)). Thereby, since the operation force for moving the clutch operation lever 20 becomes large, an operator can feel that the clutch operation lever 20 was operated in the threshing clutch on operation position ON1. Therefore, when the operator wants to keep only the threshing clutch 14 in the on state with the mowing clutch 19 turned off, the manipulator operates the clutch operating lever 20 to the threshing clutch on operation position ON1. In this state, the threshing clutch on operation position ON1 can be set by releasing the clutch operating lever 20.

The head is operated by the manipulator driving only the threshing part 3 from the state before the start of work in which the clutch operation lever 20 is located at the clutch off operation position OFF, and stopping the traveling and harvesting part 2 of the body. When land threshing is desired, the clutch operation lever 20 is operated once from both the clutch off operation position OFF to both the clutch on operation position ON2, and the clutch operation lever 20 is then operated to the threshing clutch on operation position ( By performing the operation of returning to the position of ON1, the headland threshing operation can be performed in which the harvesting clutch 19 is turned off and only the threshing clutch 14 is turned on.

In this embodiment, the cam member 46 of the passage mechanism 45 is spaced apart from the coupling cylinder 32 just before being set to both clutch-on operation positions ON2, and at this time, the switch of the mowing switch 44 Even if the piece 44a is starting to contact the 2nd cam surface 42b of the clutch operation lever 20, or even if it is in contact, the harvesting clutch 19 is not in the ON state yet, and the harvesting | reaping part 2 is operated, Without thrusting, only the threshing clutch 14 can be turned on.

The mowing clutch 19 is a clutch operation lever 20 when both the clutch operation lever 20 and the clutch arm 62 for operating the tension wheel 61 are mechanically linked by a link or a wire. It is only possible to set the mowing clutch 19 to be in the ON state immediately before or at the time of operation to the operation position ON2, but in this embodiment, the electric motor 21 is based on the detection signal by the mowing switch 44. Drive the gears 54 by the pinion gear 55 to operate the clutch arm 62 through the interlocking rod 66 so that the mowing clutch 19 is turned on. Is set at both clutch-on operation positions ON2, and after some time lag, the mowing clutch 19 is turned on.

Therefore, in the present embodiment, when the headland threshing is performed from the beginning, even if the clutch operation lever 20 is operated from both the clutch off operation position OFF to both the clutch on operation position ON2, the threshing clutch on operation position is quickly performed. When a little return to the operation direction of (ON1), the harvesting clutch 19 does not turn ON, and after that, the threshing clutch 14 is gradually set by setting the clutch operation lever 20 to threshing clutch on operation position ON1 gradually. Can be turned on.

When operating the clutch operation lever 20 from the threshing clutch on operation position ON1 to the clutch off operation position OFF, the clutch operation lever 20 is moved from the threshing clutch on operation position ON1 to the clutch off operation position (OFF). ), The engagement cylinder 32 of the detent mechanism 25 presses the second cam surface 46b of the passage mechanism 45, swings the cam member 46, and passes through the clutch operation lever ( 20) can be returned to the clutch off operation position (OFF). In this position, the coupling cylinder 32 is coupled to the notch 31, so that the operation force of the clutch operation lever 20 increases, so that the operator does not see the clutch operation lever 20, so that the clutch operation lever 20 is in the clutch off operation position. You can feel the position at (OFF).

[Other Embodiments]

(1) In the above-described embodiment, the passage mechanism 45 acts on the path for operating the clutch operation lever 20 from the clutch off operation position OFF to both the clutch on operation positions ON2, and the clutch operation lever 20 ), The passage mechanism 45 becomes inactive and the detent mechanism 25 functions in the return passage in the return path for operating the clutch from the clutch on operation position ON2 to the clutch off operation position OFF. As shown in FIG. 15, the passage mechanism 45a is provided to cover the intermediate notch 31 corresponding to the threshing clutch on operation position ON1, and the passage member 45a is not shown. You may comprise so that it may switch to the operating posture shown in FIG. 15A and the non-operation posture shown in FIG. By doing so, by operating the passage member 45a in the acting posture, the passage mechanism 45 acts in both the operation of the traveling path and the return path of the clutch operation lever 20, and the passage member 45a is notched 31. By operating in the non-operation posture retracted upward, the clutch operation lever 20 is detented in the threshing clutch on operation position ON1 in both the operation of the return path and the return path of the clutch operation lever 20. ), The position can be held. Therefore, in this case, when performing the headland threshing operation, by operating the passage member 45a in a non-operational posture, the clutch operation lever 20 is once operated from both the clutch off operation position OFF and the clutch on operation position ( The clutch operation lever 20 can be positioned by operating directly from the clutch off operation position OFF to the threshing clutch on operation position ON1 without operating to ON2).

(2) In the main embodiment, the passage mechanism 45 (cam member 46) is used when the clutch operation lever 20 is a return path for operating the clutch operation lever 20 from the clutch off operation position OFF to both the clutch on operation positions ON2. And the return mechanism 45 (cam member 46) does not work when it is in the return path operated from both the clutch on operation position ON2 to the clutch off operation position OFF, and thus the threshing clutch on operation position ON1. Although the configuration of the detent mechanism 25 in FIG. 8 functions to reliably operate the clutch operation lever 20 to the threshing clutch on operation position ON1 is shown, the cam member 46 in FIGS. 9 and 10 is illustrated. ) May be arranged on the paper surface from side to side. As a result, the passage mechanism 45 (cam member 46) becomes inoperative when the clutch operation lever 20 is operated in the path from the clutch off operation position OFF to both the clutch on operation positions ON2. The detent mechanism 25 functions at the threshing clutch on operation position ON1 which is the middle path, and the clutch operation lever 20 can be positioned and operated to the threshing clutch on operation position ON1. When the return operation is performed from both the clutch on operation position ON2 to the clutch off operation position OFF, the passage mechanism 45 (cam member 46) acts to detent mechanism 25 at the threshing clutch on operation position. Since the clutch operation lever 20 cannot be smoothly operated, the clutch operation lever 20 can be smoothly operated to the clutch off operation position OFF.

As a result, during the operation from the clutch off operation position OFF of the clutch operation lever 20 to both the clutch on operation positions ON2 and the operation from the both clutch on operation positions ON2 to the clutch off operation position OFF, at least In one operation, when the clutch operation lever 20 is positioned at the threshing clutch on operation position ON1, the passage mechanism 45 which does not couple the engaging portion 32 to the engaged portion 31 is provided. You can do it.

EMBODIMENT OF THE INVENTION Hereinafter, another embodiment of this invention is described based on drawing.

[Overall structure]

As shown in FIGS. 16-18, the driving part B which has a cabin Ba in the front part position of the traveling body A which runs with a pair of left and right crawler traveling apparatuses 301, and a harvesting preprocessing part. The combine is provided with the threshing process part E which the grain stage from the harvesting pre-processing part D is supplied to the traveling vehicle body A, and the grain tank F which stores grain, while arranging (D) in parallel. Consists of.

The engine 303 is arrange | positioned below the driving seat 302 inside the cabin Ba, and the crawler traveling device 301 which drives the drive force from the engine 303 to the center position of the front part of the traveling vehicle A is left and right. Mission case 304 is provided to deliver.

The upper part of the mission case 304 is provided with the hydrostatic stepless speed changer 305 which switches back and forth in the travel direction and performs stepless speed change of the travel speed. The mission case 304 is transmitted to a sub transmission device (not shown) for converting the traveling speed transmitted from the continuously variable transmission 305 to two stages of elevation, and the drive sprocket 301S of the crawler traveling device 301 on the left and right sides. The steering clutch 304C is built in the hydraulic actuation type which interrupts the driving force which becomes.

A power transmission system is formed by winding the endless belt 306 over the first output pulley 303a of the engine 303 and the input pulley 305a of the continuously variable transmission 305.

The harvesting pretreatment unit D includes a divider 311 for dividing the upright grain stand, a plurality of standing devices 312 for raising the upright grain stand with a plurality of upright hooks, and a harvesting device 313 for cutting the root of the grain stand. And a grain bed conveying apparatus 314 for conveying the harvested grain table and a support frame 315. The support frame 315 is formed of a cylindrical member, the front end side is disposed in an inclined downward position, and the base end thereof is supported by the traveling vehicle body A so as to be able to swing around the transverse axis P. . The support frame 315 is swung around the transverse axis P by the driving force of the lifting cylinder 316, and the swinging of the mowing pretreatment unit D is realized by this swinging.

The support frame 315 uses the driving force from the drive shaft (not shown) provided therein to the standing device 312, the harvesting device 313, and the grain conveyance device 314 of the harvesting pretreatment unit D. FIG. It functions as a transmission case to transmit. A mowing input pulley 321 and a mission case are provided with a mowing input pulley 321 for transmitting a driving force from the proximal end of the supporting frame 315 to the drive shaft inside the supporting frame on the coaxial center with the horizontal axis P. The mowing clutch Cd, which is a belt tensioning type, is provided with a tension pulley 324 which winds the endless belt 323 over the mowing output pulley 322 of 304 and exerts a tension on the endless belt 323. Consists of.

Threshing treatment part E provides a threshing effect to the feed chain 331 which clamps and conveys the grain stand supplied from the harvesting preprocessing part D, and the tip end of the grain stand carried by the feed chain 331. In addition to the threshing chamber 332 and the tuyere 333 for supplying the sorting wind, the workpiece separated from the tip of the ear by the threshing action of the barrel 332 is separated from the water net (not shown). Processing for sorting and collecting the grains from the processed material by the sorting wind from the tuyere 333 and specific gravity sorting by the swinging sorting unit (not shown), and sending the sorted and recovered grains to the grain tank F in this manner. do.

The tuyere input pulley which is provided with the pair of 2nd output pulley 303b in the engine 303, and has the barrel input pulley 332b which transmits a driving force to the barrel 332, and transmits a driving force to the tuyere 333. 333b, the endless belt 326 is wound over one second output pulley 303b and the barrel input pulley 332b, and the other second output pulley 303b and the tuyere input pulley 333b. A pair of tension pulleys 327 are wound around the endless belt 326 to apply tension to the pair of endless belts 326 to constitute a belt tension threshing clutch Ce. In addition, the threshing clutch Ce is operated simultaneously with the pair of tension pulleys 327.

The grain tank F functions as a storage part which stores the grain from threshing process part E, and is provided with the unloader 334 which carries out a grain. This unloader 334 has a structure in which the up-down position of the discharge end and the pivoting around the longitudinal axis can be set, and the discharge position of a grain can be set arbitrarily. Although not shown in the figure, the combine includes a discharging screw provided at the bottom of the grain tank F and an electric system for transmitting the driving force of the engine 303 to the unloader 334.

[Operation part]

The above-mentioned cabin Ba is provided with the roof 336 in the upper part, and the glass 337 etc. are provided in the front part or the side part, and the driver's seat 302 mentioned above is formed in this driving space. It is provided. As shown in FIG. 19, a steering lever 341, a meter unit 342, and a front operation panel FP are provided at a front position of the driver's seat 302, and a left position of the driver's seat 302 is provided. The main gear lever 343, the sub transmission lever 344, the work clutch lever 345, and the side operation panel SP are arrange | positioned at this.

The steering lever 341 realizes steering control of the traveling vehicle A and lifting control of the mowing preprocessor D. FIG. That is, this steering lever 341 is held in the neutral position N shown in FIG. 20 in a non-operation state, and is hold | maintained in this neutral position N, so that the left-right steering clutch 304C is turned on (electric transmission). State), and the left and right crawler traveling devices 301 are driven at constant speed to drive the traveling vehicle body A straight. In addition, by rocking the steering lever 341 in the left and right direction, the steering clutch 304C corresponding to the rocking direction is turned off (operation for interrupting transmission) to turn the traveling vehicle body A in the rocking direction (steering). Let's do it.

By rocking the steering lever 341 to the front, the lifting cylinder 316 is controlled to lower the cutting pretreatment unit D at a speed corresponding to the swing amount (swinging angle), and the operation is released to the neutral position (N). ), The lowering of the harvesting pretreatment unit D is stopped. Further, by rocking the steering lever 341 to the rear, the lifting cylinder 316 is controlled to raise the cutting pretreatment unit D at a speed corresponding to the amount of rocking (swinging angle), and the operation is released to neutral position ( By returning to N), the rise of the harvesting pretreatment unit D is stopped.

Moreover, the grip part of this steering lever 341 is equipped with the some operation switch 341a which performs the rolling control of the traveling vehicle A, and is equipped with the button type up switch 341U and the down switch 341D. . The rising switch 341U is pushed to set the cutting pretreatment unit D up to the set height even if the push operation is not continued, and the drop switch 341D is operated in this raised state so that the push switch 341U is set even if the push operation is not continued. Control to lower the harvesting pretreatment unit D to a height is realized. The rolling control of the traveling vehicle A is achieved by operating the ground side of the crawler traveling device 301 on the left and right independently, but since it is a known technique, the description of the configuration and operation mode is omitted.

The meter unit 342 displays the engine rotation speed, the sub transmission position, the fuel remaining amount, and the like. In the front operation panel FP, as shown in Fig. 22A, an accelerator setting dial 347 for setting the rotational speed of the engine 303 and a plurality of conditions for setting control conditions for rolling control of the vehicle body, etc. are set. A rolling setting unit 348 having a button or a lamp and a harvesting condition setting unit 349 having a plurality of buttons for setting the cutting conditions of the traveling vehicle body A at the time of harvesting are provided.

The main gear lever 343 controls the continuously variable transmission 305 described above to switch forward and backward of the traveling vehicle body A and set the speed. The sub transmission lever 344 shifts the sub transmission device of the mission case 304 to two levels of height.

The work clutch lever 345 functions as an operation tool for controlling the threshing clutch Ce and the mowing clutch Cd. In the harvesting operation mode from the off position corresponding to the home position as shown in FIG. The threshing work position M which is comprised so that operation is possible in the linear operation area | region across the harvesting work position ON which implement | achieves the operation | work, and implement | achieves a threshing work mode is arrange | positioned at the intermediate position of this operation area | region. The control form of threshing clutch Ce and harvesting clutch Cd by operation of this work clutch lever 345 is mentioned later.

In the side operation panel SP, as shown in FIG.22 (b), a pair of dichotomous lever operation switches which set the attitude | position of the dichotomous lever (not shown) provided in the side of the traveling vehicle body A so that a retirement is possible. 351, a cutting height setting unit 352 having dials or buttons for setting the mount height of the cutting pretreatment unit D, and a grain table for the barrel 332 of the threshing processing unit E. FIG. When the threshing depth switch 353 which realizes threshing depth control which maintains an insertion amount appropriately, and the harvesting preprocessing part D by the operation of the above-mentioned rise switch 341U and the fall switch 341D is raised and lowered. Is provided with an auto clutch switch 354 for realizing the off operation of the harvesting clutch Cd and the on operation of the harvesting clutch Cd, and a vehicle speed setting dial or buttons for setting the traveling speed of the traveling vehicle A. In the vehicle speed setting section 355 and threshing processing section E, A sorting performance setting unit 356 is provided having a dial for setting the sorting performance, a dial for setting the amount of air of the air vent 333, and the like.

[Work clutch lever and clutch control mechanism]

The work clutch lever 345 holds the threshing clutch Ce and the harvesting clutch Cd in the OFF position in the OFF position OFF, and operates the threshing clutch Ce and the harvesting clutch Cd) is set to the on state, and the threshing clutch Ce is set to the on state in the threshing working position M. FIG.

In particular, when the work clutch lever 345 reaches the threshing work position M when operating from the off position OFF to the harvest work position ON, the work clutch lever 345 does not perform the on operation of the threshing clutch Ce, and thus the harvest work position. The threshing clutch Ce and the harvesting clutch Cd are set to the on state by being operated until (ON), and then, the threshing clutch Ce is kept on when the threshing clutch Ce is operated to the threshing working position M. Only the mowing clutch Cd is set to the off state.

In this combine, when the work clutch lever 345 is operated from the off position OFF to the harvesting work position ON, the engine 303 is raised to the rated rotational speed and the threshing depth control is started. .

As shown in Figs. 21 and 23, the work clutch lever 345 is rotatably supported around the support shaft 362 so as to realize linear operation in the operating region of the lever guide 361, and at the same time A cam body 363 which integrally operates with the clutch lever 345 is formed. The threshing position sensor 364 which detects that the work clutch lever 345 is in threshing working position M, and the thing which is in a harvest working position ON by contacting the cam surface 363S of this cam body 363 are detected. The harvest position sensor 365 is provided as an operation position sensor.

Although not shown in the figure, the work clutch lever 345 has a frictional or ball detent type so as to be held at an OFF position, a harvesting operation position, and any operating position of the threshing operation position M. FIG. The holding force from the operation position holding mechanism such as the back acts.

In addition, when the work clutch lever 345 is operated from the off position OFF, the threshing position sensor 364 is detected when the work clutch lever 345 is operated in the area including the threshing work position M. FIG. A state is reached, and this detection state continues even if the work clutch lever 345 is operated to the harvest work position ON. The harvest position sensor 365 reaches a detection state when the work clutch lever 345 reaches the region including the harvest work position ON. That is, in this detection system, the work clutch lever 345 has a threshing work position M, an area including the harvest work position ON, and an area not included in these (off position OFF). Is detected as].

Although threshing position sensor 364 and harvesting position sensor 365 which function as an operation position sensor are comprised with a limit switch, it is possible to use a proximity sensor and a photointerrupter non-contact sensor as an operation position sensor, for example, Moreover, you may comprise so that the oscillation angle of the work clutch lever 345 may be measured using a potentiometer as an operation position sensor. In particular, when a potentiometer is used, the detection accuracy of the operation position of the work clutch lever 345 is improved.

As the clutch control mechanism, as shown in FIG. 24, the sector gear 368, the first cam plate 369, and the second cam plate (to be integrally rotated with the support shaft 367 rotatably supported by the frame 366). The frame 366 is provided with the clutch motor 372 (an example of an actuator) which consists of an electric motor so that the pinion gear 371 which engages with the sector gear 368 may be provided. Moreover, in order to detect the rotation amount of the support shaft 367, the rotation angle sensor 367S which consists of a potentiometer is provided.

This clutch control mechanism supports the first arm 374 and the second arm 375 so as to be able to swing to the shaft 373 supported by the frame 366. One end side of the first arm 374 rotatably supports the first roller 374R, which is in contact with the cam surface of the first cam plate 369, and a second cam plate (at the end side of the second arm 375). The 2nd roller 375R which can contact the cam surface of 370 is rotatably supported. Moreover, the inner part 376a of the 1st operation wire 376 which operates the threshing clutch Ce is connected to the other end side of the 1st arm 374, and it is mowing on the other end side of the 2nd arm 375. As shown in FIG. The inner portion 377a of the second operation wire 377 for operating the clutch Cd is connected.

The tension pulley 327 of the threshing clutch Ce described above is supported by the tension arm 327A, and the tension arm 327A is slidably supported around the axis 327S, and with respect to this tension arm 327A. The inner part 376a of the 1st operation wire 376 is connected. Similarly, the tension pulley 324 of the mowing clutch Cd is supported by the tension arm 324A, and the tension arm 324A is supported by the tension arm 324A so as to be able to swing around the axis 324S. The inner part 377a of the 2nd operation wire 377 is connected with the other.

[Threshing depth control mechanism]

As shown in FIG. 18, the grain conveyance apparatus 314 mentioned above carries out the conveyance of the grain | base stand of the grain stand with an endless chain and a fitting support rail so that the grain stand immediately after harvesting may be transmitted to the feed chain 331. As shown in FIG. 314A and the ear tip conveyance part 314B which catches and conveys the ear tip side of a grain stand with many hook claws, and the bottom is conveyed by the feed chain 331 to the conveyance terminal part side of the base conveyance part 314A. The supply conveyance part 314AF (an example of threshing depth operation part) to deliver is provided.

This supply conveyance part 314AF is supported by the grain stem conveying apparatus 314 so that oscillation around the axis center Q is possible, and this supply conveyance is carried out by the oscillation around the axis center Q of this supply conveyance part 314AF. Threshing depth adjustment which changes threshing depth is performed by changing the position of the grain direction conveyed to the feed chain 331 from the part 314AF.

This threshing depth control mechanism is equipped with the threshing depth adjustment unit 317 which has an electric motor so that the threshing depth control mechanism may oscillate around the axial center Q of the supply conveyance part 314AF, and shows grain conveyance as shown in FIG. Two ear tip sensors 319 are provided in the conveyance terminal part of the apparatus 314. As shown in FIG. The ear tip sensor 319 is provided with the sensor bar 319a which is able to contact the ear tip of a grain table, and can be rocked, and the sensor main body 319b which detects the rocking | fluctuation of this sensor bar 319a. At the time of control, rocking control of the feed conveying unit 314AF is performed such that the tip end position of the grain stand is present at the intermediate position of the sensor bar 319a of the two tip end sensors 319.

[Control structure]

In this combine, as mentioned above, the threshing clutch Ce and the harvesting clutch Cd are controlled by the work clutch lever 345, and the work clutch lever 345 is harvested from the off position OFF. ON, the engine 303 is raised to the rated rotation speed at the same time, and threshing depth control is started. In order to realize such a control, the control structure shown in FIG. 26 is provided.

In this combine, it has the control apparatus 381 which has a microprocessor, and with respect to this control apparatus 381 from the operation detection unit 341S which detects the oscillation operation amount of the steering lever 341 in the front-back direction and the left-right direction. A potentiometer-type accelerator setter which detects a signal, a signal from the rising switch 341U, a signal from the falling switch 341D, and the setting position of the accelerator setting dial 347 serving as a rotation speed setting tool. A signal from the threshing position sensor 364 and a harvesting position sensor 365 for detecting a signal from the 347S, a signal from the threshing depth switch 353, an operation position of the work clutch lever 345, and 2 The input signal system into which the signal from the ear tip sensor 319 is input is formed.

The control device 381 further includes an electromagnetically controlled elevating control valve 382 for supplying and draining hydraulic oil to the elevating cylinder 316, and an electromagnetically controlled steering control valve for controlling the left and right steering clutches 304C. 383, an output for outputting a control signal to the clutch motor 372, the engine rotation control unit 384 (an example of the engine control unit) that controls the rotational speed of the engine 303, and the threshing depth adjustment unit 317. A signal system is formed.

The control device 381 includes elevating control means 385 for realizing elevating control of the mowing preprocessing unit D, steering control means 386 for realizing the control of the steering clutch 304C, threshing clutch Ce, and Clutch control means 387 for realizing control of the mowing clutch Cd, engine rotation control means 388 for realizing control of the rotational speed of the engine 303, and threshing depth control means for realizing threshing depth control ( 389).

The lift control means 385, the steering control means 386, the clutch control means 387, the engine rotation control means 388, and the threshing depth control means 389 are assumed to be composed of software. Instead of this, for example, these may be constituted by logic circuits such as logic, or may be constituted by a combination of logic circuits and software.

[Control routine]

27 shows an outline of the control when the work clutch lever 345 is operated by an operator. This control assumes that the work clutch lever 345 is in the off position (OFF) at the start of control (for example, at the start of the engine 303). In this state, the flag is set to "0". do.

When the work clutch lever 345 is in the off position (OFF), the threshing position sensor 364 and the harvesting position sensor 365 are also in the non-detecting state. In this way, when it is determined from the detection results of the threshing position sensor 364 and the harvesting position sensor 365 that the work clutch lever 345 is in the off position OFF, the threshing clutch Ce and the mowing clutch Cd. Is kept off (steps # 301 to # 303).

Next, when the work clutch lever 345 is operated from the off position OFF to the harvest work position ON by the operator, the work clutch lever 345 is the threshing work position M in the middle of the operation region. The threshing position sensor 364 detects that the control panel reaches the thx level, but control is not performed at this detection timing. Then, when threshing position sensor 364 and harvesting position sensor 365 reach the detection state and it is determined that the work clutch lever 345 has reached the harvesting work position ON, the clutch control means 387 clutches the clutch. The motor 372 is rotated forward to set the threshing clutch Ce and the mowing clutch Cd on, the engine rotation control means 388 sets the engine rotation at the rated rotation speed, and the threshing depth control means ( 389) The threshing depth is executed, and the flag is set to "1" (# 304, # 305 steps).

Although not shown in the flowchart, when the clutch control means 387 operates the clutch motor 372 for forward rotation, an alarm is activated prior to the forward rotation operation, and the threshing clutch Ce ) And the operator to recognize that the cutting clutch Cd is turned on, and then control is performed to activate the clutch motor 372 after a few seconds later.

When the clutch motor 372 is operated, the rotation amount of the first cam plate 369 and the second cam plate 370 is grasped by the control device 381 by feeding back the detection result of the rotation angle sensor 367S described above. . Then, the first cam plate 369 comes into contact with the first roller 374R of the first arm 374 by the operation of the clutch motor 372 so that the threshing clutch Ce is applied through the first operating wire 376. First turn it on. After that, the second cam plate 370 is in contact with the second roller 375R of the second arm 375 in the operation sequence of setting the mowing clutch Cd to the on state through the second operation wire 77. The operation is done.

When the work clutch lever 345 is operated to the harvesting work position ON in this manner, the engine rotation control means 388 is the engine rotation control unit 384 irrespective of the setting position of the accelerator setting dial 347. Control the engine speed to the rated speed. In connection with this, threshing depth control means 389 controls threshing depth adjustment unit 317, and threshing depth control is performed.

In this way, the threshing clutch Ce and the harvesting clutch Cd are set in the on state, the engine rotation is set at the rated rotational speed, and the threshing depth is executed, so that the operator can perform their control without any trouble in operation. Can be. In addition, by setting the engine 303 at the rated rotation speed, even when the accelerator setting dial 347 is set at a low rotation speed, it is supposed that the harvesting operation can be started without a lack of driving force, thereby artificially accelerating the accelerator. The trouble of operating the setting dial 347 is also reduced.

In this state, when it is discriminated from the signal from the accelerator setter 347S that the accelerator setting dial 347 has been slightly operated by the operator, the engine rotation control means 388 causes engine rotation to be the accelerator setting dial 347. Control to set the rotational speed corresponding to the set value () is performed (# 306 step).

That is, the rated rotational speed is set to a rotational speed for obtaining sufficient driving force required for the work. In contrast, in the harvesting operation, the engine 303 does not necessarily need to be operated at a rated rotational speed. For example, depending on the rice crop, it is desired to operate the engine 303 at a rotational speed slightly lower than the rated rotational speed. In some cases, the rotational speed set in this way becomes a value that is approximately determined for the package, and by setting the accelerator setting dial 347 in advance, it is possible to operate the engine 303 at the set rotational speed. Thereafter, the engine rotation speed can be arbitrarily changed and set by operating the accelerator setting dial 347.

Although not shown in this flowchart, it is also possible to stop threshing depth control by artificially operating the threshing depth switch 353 in the state where threshing depth control is performed as mentioned above.

After that, when it is determined by the threshing position sensor 364 and the harvest position sensor 365 that the work clutch lever 345 has been operated to the threshing working position M, the clutch control means 387 The clutch motor 372 is operated in reverse rotation to set the mowing clutch Cd in the off state while maintaining the on state of the threshing clutch Ce (steps # 307 and # 308).

Further, if the operation clutch lever 345 is operated from the threshing working position M to the harvesting working position ON with the signals from the threshing position sensor 364 and the harvesting position sensor 365, the clutch control means ( 387 sets the threshing clutch Ce and the harvesting clutch Cd to the on state by forward-actuating the clutch motor 372 (steps # 309 and # 310).

In this way, the rotation amount of the first cam plate 369 and the second cam plate 370 is grasped by the control device 381 by feeding back the detection result of the rotation angle sensor 367S even when the clutch motor 372 operates. do.

In this state, if it is discriminated from the signal from the accelerator setter 347S that the accelerator setting dial 347 has been slightly operated by the operator, as described above, the engine rotation control means 388 causes the engine to rotate. Control to set the rotation to the engine rotation speed corresponding to the set value of the accelerator setting dial 347 is performed (step # 311).

When the accelerator setting dial 347 is not operated by the operator, the control shown in steps # 306 and # 309 is not performed, and the work clutch lever 345 is operated to the threshing working position M. FIG. Even if it is, the engine 303 continues to operate at the rated rotational speed, after which the engine 303 is rated even if the working clutch lever 345 is operated from the threshing working position M to the harvesting working position ON. It runs at rotational speed.

After that, when the work clutch lever 345 is not operated to the OFF position OFF, the clutch control corresponding to the operation between the harvest work position ON of the work clutch lever 345 and the threshing work position M is performed. To realize. When the thrust position sensor 364 and the harvest position sensor 365 determine that the work clutch lever 345 has been operated to the off position OFF, the clutch control means 387 operates the clutch motor 372. By reverse operation, threshing clutch Ce and harvesting clutch Cd are set to the off state, and the flag is set to "0" (# 312, # 313 steps).

In addition, when a flag is set to "1", control from the above-mentioned # 307 step is performed, and after a flag is set to "0", control from the above-mentioned # 302 step is performed.

Although not shown in the flowchart, the control device 381 also implements the following control. When the steering lever 341 is rocked in the front-rear direction by the operator in the state where the engine 303 is operating, this rocking operation is detected by the operation detection unit 341S. In response to this detection, the elevating control unit 385 controls the elevating control valve 382 so that the elevating cylinder 316 is lowered or raised to raise or lower the cutting pretreatment unit D at a speed corresponding to the amount of swing (swinging angle). When the steering lever 341 is returned to the neutral position N, the lowering or raising of the mowing pretreatment unit D is stopped.

In addition, when the steering lever 341 is operated in the left-right direction by an operator, this operation is detected by the operation detection unit 341S. In response to this detection, the steering control means 386 controls the steering control valve 383 so that the corresponding steering clutch 304C is turned off, and when the traveling vehicle A is in the traveling state, the vehicle is turned in the swinging operation direction. (Steering) becomes possible.

EXAMPLES

As described above, according to the present invention, when the work clutch lever 345 is operated from the off position (OFF) to the harvesting work position (ON), the threshing clutch Ce and the mowing clutch Cd are reliably set to the on state. At the same time, the engine 303 is set at the rated rotation speed even if the operator's operation does not perform any special operation, and the problem of the engine stop due to lack of driving force can be avoided. Moreover, since threshing depth control is also performed, an effective threshing is implement | achieved by supplying a grain bin with an appropriate threshing depth to threshing processing part E.

In addition, the phenomenon that only the threshing clutch Ce is turned on even when passing through the threshing working position M in the middle of operating the work clutch lever 345 from the off position OFF to the harvesting working position ON is avoided. Thus, when the operator operates the work clutch lever 345 in the direction from the off position OFF to the harvesting work position ON, this operation is insufficient, and only the threshing clutch Ce reaches the on state and operates. By eliminating the problem that the operator incorrectly recognizes the operation as the harvesting work position (ON) from the sound or vibration, the threshing clutch (Ce) and the mowing clutch (Cd) are surely turned on so that the transition to the harvesting operation can be smoothly performed. have.

Further, even when the work clutch lever 345 is operated from the harvesting work position ON to the threshing work position M, the engine 303 can also be operated at the rated rotational speed, thereby turning on the threshing clutch Ce. The manual threshing operation can also be performed with sufficient driving force, without causing the driving force shortage of the engine 303 to remain in the state. In particular, when the accelerator setting dial 347 is slightly operated after the engine rotation is set to the rated rotation speed, it is also possible to set the rotation speed of the engine to the rotation speed corresponding to the setting position of the accelerator setting dial 347. For example, the work which considered fuel efficiency is also implemented.

Further, according to the present invention, when the work clutch lever 345 is operated from the off position (OFF) to the harvesting work position (ON), the threshing clutch (when passing through the threshing work position M in the middle of this operation) The phenomenon that only Ce is turned on is avoided. Thus, when the operator operates the work clutch lever 345 in the direction from the off position OFF to the harvesting work position ON, this operation is insufficient, and only the threshing clutch Ce reaches the on state and operates. By eliminating the problem that the operator incorrectly recognizes the operation as the harvesting work position (ON) from the sound or vibration, the threshing clutch (Ce) and the mowing clutch (Cd) are surely turned on so that the transition to the harvesting operation can be smoothly performed. have.

Further, after the threshing clutch Ce and the harvesting clutch Cd are set to the on state, the threshing clutch Ce is kept in the on state by operating the work clutch lever 345 to the threshing working position M. The headland threshing operation is also possible by setting the harvesting clutch Cd in the off state. In addition, when the traveling vehicle body A reaches the headland during the harvesting operation and moves the steering lever 341 backward to raise and retract the harvesting pretreatment unit D, the work clutch lever 345 is threshed in the working position. By operating in (M), even if the upright grain stand contacts the harvesting preprocessing part D, for example, the operation | work which does not mow the upright grain stand contrary to the intention of an operator is implement | achieved. Further, after the cutting pretreatment unit D is raised to turn the traveling vehicle A, the steering lever 341 is operated forward to lower the cutting pretreatment unit D, and the work clutch lever 345 is harvested. By operating to the position ON, the threshing clutch Ce and the harvesting clutch Cd are set to the on state, so that the harvesting operation can be continued.

In particular, when the work clutch lever 345 is operated from the off position (OFF) to the harvesting work position (ON), the engine 303 is set at the rated rotational speed, thereby avoiding the problem of an engine stop from lack of driving force. have. In addition, since threshing depth control is also performed, the threshing processing part E is supplied to a grain threshing machine at an appropriate threshing depth, and an effective threshing is realized.

[Other Embodiments]

This invention may be comprised as follows in addition to embodiment mentioned above.

(a) After the engine is set at the rated rotational speed by the engine rotation control means, a dedicated switch for setting the engine rotation to the rotational speed set by the accelerator setting dial is provided. By providing a switch in this way, it becomes possible to operate an engine at the rotational speed set with the accelerator setting dial by operating a switch, without changing the setting position of an accelerator setting dial.

(b) The operation tool for setting the threshing clutch to the on state is constituted by a push button type switch. By this configuration, the operation form is simplified. In addition, the operating tool may be configured not as a lever but as a rotation operation type similarly to the accelerator setting dial 347.

[Another embodiment]

In addition, you may comprise this invention as follows other than embodiment mentioned above.

(a) As an operation tool, a push button for electrically detecting a push operation is provided, and the control mode by the operation of the push button is set as shown in the flowchart of FIG.

Specifically, in the home state where the push button is not operated, the threshing clutch Ce and the harvesting clutch Cd are kept in the off state (steps # 701 and # 702). Next, when the push button is pressed by the initial operation, the threshing clutch Ce and the harvesting clutch Cd are turned on together (harvesting operation mode), and the engine rotation is set at the rated rotational speed and threshing. The depth control is executed (steps # 702 and # 703). Thereafter, when the push button is operated, the mowing clutch Cd is set to the off state while keeping the threshing clutch Ce on (threshing operation mode). In addition, when the push button is operated, the cutting clutch Cd is interrupted so that the on state and the off state of the harvesting clutch Cd appear alternately while the threshing clutch Ce is kept in the on state (# 704 to # 704). # 707 step).

Further, when it is determined from the signal from the accelerator setter 347S that the accelerator setting dial 347 has been slightly operated by the operator, the engine rotation control means 388 causes engine rotation to be performed by the accelerator setting dial 347. Control to set the rotational speed corresponding to the set value is performed (# 708 step).

The control of the threshing clutch Ce and the harvesting clutch Cd is performed by the clutch control means 387. When the clutch control means 387 detects that the push button is pressed for a few seconds or more, the threshing clutch Ce is detected. And the harvesting clutch Cd are set to the off state (steps # 709 and # 710).

(b) As shown in FIG. 29, the operation position is arrange | positioned in the order of an OFF position, a harvest operation position, and threshing operation position M in the operation area | region of the work clutch lever 345 as an operation tool. do.

By arrange | positioning each operation position in this way, when operating the work clutch lever 345 from the off position (OFF), the threshing clutch Ce and the harvesting clutch Cd must always be turned on in a harvest work position ON. Can be set.

(c) In the case where the operating tool is configured in the form of a lever, it is not necessary to form the operating region in a straight line. good. In addition, the operating tool may be configured not as a lever but as a rotation operation type similarly to the accelerator setting dial 347.

The present invention can be applied not only to self-deleting combines but also to ordinary combines.

Moreover, this invention can be used for the whole of a thal | arm type and a normal type combine equipped with the threshing clutch which interrupts the driving force transmitted from an engine to a threshing preprocessing part.

Moreover, this invention can be utilized for the whole self-rolling and normal combine combine provided with a threshing clutch and a mowing clutch.

2: mowing part
3: threshing part
14 threshing clutch
19: mowing clutch
20: clutch operation lever
25 detent mechanism
31: Coupled part (notch)
32: coupling part (coupling cylinder)
44: mowing switch
45: passing mechanism
46: cam member
47: spring
303: engine
314AF: threshing depth operating part (supply conveying part)
345: operation tool (job clutch lever)
347: rotation speed setting port (accelerator setting dial)
364: operation position sensor (threshing position sensor)
365: operation position sensor (harvest position sensor)
372: actuator (clutch motor)
384: engine control unit (engine rotation control unit)
387: clutch control means
388: engine rotation control means

Claims (11)

A threshing clutch for regulating the drive system of the mowing part and a threshing clutch for regulating the drive system of the threshing part; when one clutch operating lever is operated to the clutch off operation position, both the mowing clutch and the threshing clutch are turned off. When the threshing clutch is operated to the threshing clutch on operation position, only the threshing clutch is turned on when the harvesting clutch is in an off state, and when the threshing clutch is operated to both clutch on operating positions, both the threshing clutch and the two clutches of the mowing clutch are turned on. In the combine combine,
The clutch off operation position, the threshing clutch on operation position, and the clutch on operation position are arranged on one straight line,
If the clutch operation lever is located at the clutch off operation position, the threshing clutch on operation position, and both the clutch on operation positions, the engaging portion is provided with a detent mechanism that engages with the engaged portion and holds the clutch operation lever.
At least one of the clutch operation levers during the operation from the clutch off operation position to both the clutch on operation positions and the operation of the clutch off operation position from the clutch off operation position to the clutch off operation position. And a passing mechanism that does not engage the engaging portion with the engaged portion even when the thrust clutch on operation position is positioned. The said passage mechanism is an operation | movement from the said clutch off operation position of the said clutch operation lever to the said both clutch on operation position, or the operation from the said both clutch on operation position to the said clutch off operation position, In any one operation, it is provided with the cam member which retracts the said engaging part with respect to the to-be-engaged part so that the said engaging part may not engage with the to-be-engaged part even if the said clutch operation lever is located in a threshing clutch on operation position, combine. The engagement portion according to claim 1 or 2, wherein, when the clutch operation lever is operated at both clutch on operation positions from the clutch off operation position of the clutch operation lever, the engagement portion is disposed at the threshing clutch on operation position. When the clutch operation lever is positioned at the threshing clutch on operation position when the clutch operation lever is operated at the clutch off operation position from both the clutch on operation positions of the clutch operation lever without engaging the engaged portion, The combine which comprises the said passing mechanism to couple to the to-be-engaged part. It is a combine which is provided with the threshing clutch which interrupts the driving force from an engine to a threshing processing part, and is provided with the operation tool which can operate to the on position which sets this threshing clutch in the on state, and the off position which sets in the off state,
A rotation speed setting tool for setting the rotation speed of the engine is provided, and when the operating tool is set to the on position, the engine is set at the rated rotation speed while the setting position of the rotation speed setting tool is maintained. Setting the engine to the rotational speed set by the rotational speed setting port when detecting that the rotational speed setting tool is operated or setting a predetermined switch after operating the engine at the rated rotational speed. A combine equipped with engine rotation control means. 5. The clutch control means according to claim 4, further comprising a mowing clutch for intermittent driving force from the engine to the mowing preprocessing unit, and setting the threshing clutch and the mowing clutch to an on state when the operation tool is operated to the on position. Combined with. 6. The operation tool according to claim 5, wherein the operating tool is configured to be operable in the off position and the operating region that extends from the harvesting work position, and the threshing working position is disposed at an intermediate position of the operating region, It is provided with the operation position sensor to detect,
The cropping control means does not set the threshing clutch to an on state when passing through the threshing work position at the time of operation from the off position to the harvesting work position based on a detection result of the operation position sensor. When the working clutch reaches the working position, the mowing clutch and the threshing clutch are set to the on state, and when the operating tool is operated to the threshing working position, only the threshing clutch is set to the on state,
The engine rotation control means sets the engine at the rated rotation speed when the operation tool reaches the harvesting work position, and thereafter maintains the engine at the rated rotation speed even when the operating tool is operated at the threshing work position. , Combine. It is a combine with the harvesting clutch which clamps the driving force to the harvesting preprocessing part, the threshing clutch which clamps the driving force to the threshing processing part, and the operation tool which is artificially operated,
By the initial operation from the groove state in which the harvesting clutch and the threshing clutch are in an off state, the operation tool is released in the harvesting operation mode in which the harvesting clutch and the threshing clutch are turned on, and the subsequent operation continues the operation. A combine provided with the clutch control means which exhibits the threshing operation | movement mode which turns off the said harvesting clutch, while keeping the threshing clutch on-state. The said operation tool is comprised so that operation is possible in the operation area | region which extends from the off position corresponding to the said home state to the harvesting work position which exhibits the said harvesting operation mode, The threshing in the intermediate position of this operation area | region Threshing work position which exhibits a working mode is arrange | positioned, and is provided with the operation position sensor which detects the operation position of the said operation tool,
The cropping control means does not set the threshing clutch to an on state when passing through the threshing work position at the time of operation from the off position to the harvesting work position based on a detection result of the operation position sensor, and the harvesting operation. The combine which sets the harvesting clutch and the threshing clutch to an on state when the working position is reached, and then sets only the threshing clutch to the on state when the operating tool is operated to the threshing working position. A combine according to claim 8, further comprising an actuator for controlling said mowing clutch and said threshing clutch, wherein said clutch control means performs operation of said actuator based on a detection signal from said operating position sensor. The threshing depth as described in any one of Claims 7-9 which performs threshing depth adjustment which automatically sets the threshing depth of the grain stand supplied to this threshing process part based on the ear tip position of the grain table supplied to the said threshing process part. A combine is provided, and the operation | movement part is provided and starts threshing depth adjustment by the threshing depth operation part when the said harvesting operation mode is started by operation of the said operating tool. The engine according to any one of claims 7 to 10, further comprising an engine for transmitting power to the harvesting pretreatment unit and the threshing processing unit, and an engine control unit for controlling the rotational speed of the engine. The combine which sets the said engine to rated rotational speed when the said harvesting operation mode was started by operation.

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