JPH0823753A - Automatic apparatus for stopping reaping of combine harvester - Google Patents

Abstract

PURPOSE:To automatically set a transmission stopping position for stopping the transmission of a reaper at a lower level than that of a lifting stopping position for stopping the lifting by a prescribed interval in lifting the reaper with an automatic lifting mechanism capable of sensing the absence of reaped grain culms and operating. CONSTITUTION:This automatic apparatus for stopping the reaping of a combine harvester is obtained by setting the memory of a lifting stopping position U of an automatic lifting mechanism R capable of sensing the end of reaping of grain culms, automatically lifting a reaper 1 and stopping the lifting by sensing with a reaping position sensor in a nonvolatile memory and setting the memory of a transmission stopping position P for stopping the transmission of the reaper 1 in a lifting stroke at a lower level than that of a lifting stopping position U by a prescribed interval before reaching the lifting stopping position U based on the memory setting of the lifting stopping position U.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic harvesting stop device for combine harvesters, and an automatic lift mechanism for automatically stopping the raising of the harvesting device by detecting the end of cutting during the harvesting work until the raising stop position is reached. It can be used for things such as automatically stopping the transmission of the reaper during the period.

[0002]

2. Description of the Related Art Conventionally, when performing turning for changing direction in a headland etc. at a field end during mowing work, the grain being conveyed before moving to this turning direction. A device that has an automatic lift mechanism that automatically detects that the culm has been interrupted and that raises and stops the mowing device, and a device that automatically stops the transmission of the mowing device until it reaches the raising stop position. Is disclosed.

[0003] However, conventionally, it is general that the raising and stopping position of the automatic lift mechanism of these reaping devices and the transmission stopping position for stopping the transmission are individually set. , When changing and adjusting the ascending stop position of the automatic lift mechanism, if the transmission stop position that stops the transmission does not exist within the range of the ascending stroke by the automatic lift mechanism, it means that the transmission of the reaper cannot be stopped. It is necessary to change and adjust the transmission stop position at the same time as changing and adjusting the stop position, and conversely, when the transmission stop position is changed and adjusted, it is necessary to change and adjust the rising stop position at the same time.

As described above, the raising stop position of the mowing device by the automatic lift mechanism changes the turning time depending on the turning method at the time of turning, for example, the pivot turning or the spin turning.
In the case of spin turning, since the turning time is short, it is necessary to lower the ascending stop position, and when the soil surface is soft, etc., it is necessary to change and adjust the ascending stop position depending on the sinking state of the traveling crawler. During adjustment, it is easy to set and adjust the relative relationship between the transmission stop position and the ascending stop position so that the relative position is lower than the ascending stop position by a certain distance. It was difficult.

Therefore, the present invention is intended to automatically set the transmission stop position to a lower position by a predetermined distance from the rising stop position, regardless of whether the raising stop position or the transmission stop position is changed and adjusted.

[0006]

According to the present invention, a lift of an automatic lift mechanism R that detects the end of mowing of grain culms and automatically raises the reaping device 1 and stops the raising by the detection of the reaping position sensor 2. The stop position U is stored in the nonvolatile memory 3
And the transmission stop position P for stopping the transmission of the reaping device 1 in the ascending stroke at a lower fixed interval before reaching the elevation stop position U, based on the storage setting of the elevation stop position U. The combine automatic harvesting stop device is characterized in that

[0007]

[Advantageous Effects] [Advantages of the Invention] With the above construction, when a turning operation for changing the direction is performed in a headland at the end of a field during a mowing operation, the grain culm being conveyed is interrupted before the turning operation is performed. When this is detected, the automatic lift mechanism R acts to automatically raise the reaping device 1 and stops the elevation when the position set by the reaping position sensor 2 is detected. The automatic lift mechanism R uses the mowing position sensor 2 when, for example, the soil surface becomes soft and the one that has been turning by the pivot turning is switched to the spin turning, or the traveling crawler sinks. It is necessary to change and adjust the ascending stop position U detected by the downward or upward, but based on the memory setting of the ascending stop position U by this change adjustment, the ascending lower position by a predetermined interval before reaching the ascending stop position U. The transmission stop position P for stopping the transmission of the reaping device 1 in the stroke is stored and set, and at the same time as the reaping device 1 is raised, the transmission is automatically stopped and the turning is performed. In addition,
On the contrary, when the transmission stop position P is changed and adjusted, it is also possible to store and set the ascending stop position U as the ascending stop position U based on the storage setting of the transmission stop position P.

As described above, the ascending stop position U by the automatic lift mechanism R and the transmission stop position P for stopping the transmission are
Regardless of which side of each action setting position is changed and adjusted, the setting positional relationship between the two can be held and stored at a constant interval, so that the setting of both is always set even during complicated cutting work. Since the positional relationship can be maintained at a constant interval and can be changed accurately and easily, the transmission of the mowing device 1 can be automatically stopped without fail when the mowing device 1 is lifted by the automatic lift mechanism R.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. A traveling device 6 having a pair of left and right traveling crawlers 5 traveling on the soil surface is arranged on the lower side of the vehicle chassis 4 of the combine, and threshing the culm supplied by being sandwiched by the feed chain 7 on the vehicle chassis 4, A threshing device 9 equipped with a grain tank 8 for selectively collecting and temporarily storing the threshed grains is installed.

On the front side of the threshing device 9, a grass body 10 for weeding a napped culm from a front end position, a raising portion 11 for causing the culled grain culm, and a cutting blade portion for cutting the caused culm. 12, a scraping and conveying unit 13 that conveys the cut grain culm backward and transfers it to the feed chain 7, and a supply and transport unit 14 that takes over the grain culm from the scraping and conveying unit 13 and the like. 1 is configured to move up and down with respect to the soil surface by a telescopic cylinder 15 driven by hydraulic pressure.

An operating device 16 for controlling the operation of the combine and an operating seat 17 for this operation are provided on one side of the reaping device 1, and the grain tank 8 is arranged on the rear side of the operating seat 17. The engine 18 is mounted below it. The harvesting device 1, the traveling device 6, the threshing device 9, the operating device 16, the engine 18, etc.
Is configured.

The mowing device 1 includes a mowing rack 2 fixed above a mission case 20 mounted on the front end of the chassis 4.
1, the rotary support shaft 22 of the first, the harvesting transmission pipe 23 of the harvesting device 1
The upper end is rotatably supported around the support shaft 22, and the lower end is connected to the center of a horizontally long mowing gear case 24. The mowing frame 25 extends from the lower surface side of the mowing gear case 24 toward the front. Set up this mowing frame 2
The cutting blade portion 12 is attached to the middle portion of the numeral 5, and the grass body 10 is attached to the front end portion thereof.

At the rear end of the mowing frame 25, the mowing device 1
The suspension support arm 26 for suspending the lower side of the vehicle is fixed, and between the suspension support arm 26 and the front end of the chassis 4, the front end of the front suspension link 27a and the rear suspension 27b of the front suspension link 27a which are flexibly pin-connected. The rear end and the rear end are rotatably supported to form a mowing suspension 27, and the telescopic cylinder 15 is expanded and contracted between the lower part of the mowing transmission pipe 23 and the lower part of the mission case 20. Connect freely.

Power for driving the reaping device 1 is transmitted from the side of the transmission case 20 to the rotary support shaft 22, and is transmitted from the rotary support shaft 22 to the reaping gear case 24 through the reaper transmission pipe 23. 24 to raising section 11, cutting blade section 12, scraping conveying section 13, supply conveying section 14
And so on. A grain culm sensor 28 that detects that the transport grain culm has been interrupted and that turns on the automatic lift mechanism R is arranged at an appropriate position on the transport path of the supply transporting unit 14, and the chassis of the post-suspension link 27b of the suspension unit 27 is arranged. Four
In the vicinity of the side shaft support portion, a lift stop position U for stopping the lift of the reaping device 1 due to the upward rotation amount of the post-suspension link 27b
And the harvesting device 1 at a lower position at a fixed interval from the ascending / descending position U.
And a harvesting position sensor 2 including a potentiometer for detecting a transmission stop position P for stopping the transmission of the threshing device 9.

A mowing and threshing clutch lever 29 for manually turning on and off the transmission of the mowing device 1 and the threshing device 9 and a manual operation for performing the raising and lowering action of the mowing device 1 and the steering and turning action of the traveling device 6 in the traveling direction. The power steering lever 30 and the power steering lever 30 are arranged on one side of the operating device 16, respectively, and are turned on and off by turning on and off the cutting clutch lever 29.
A reaping solenoid 32a for arranging a mowing and disengaging clutch switch 31 arranged in the action path of the mowing and disengaging clutch lever 29, and operating the power steering lever 30 in the front-back direction to actuate the telescopic cylinder 15 to raise and lower the reaping device 1. And the cut-off solenoid 32b are appropriately arranged.

A clutch control motor 33 for automatically turning on and off the transmission of the reaping device 1 and the threshing device 9, a cutting position sensor 34 for detecting a control position of the clutch control motor 33, and a cutting position sensor 34.
The cutting / disengaging clutch relay 35a and the cutting / disengaging clutch disengagement relay 35b, which engage and disengage the clutch control motor 33 based on the detection of the above, are appropriately arranged.

A non-volatile memory for storing and setting an ascending stop position U of the automatic lift mechanism R which is actuated by detection of the absence of the cane by the grain stalk sensor 28, and a transmission stop position P located at a lower position by a predetermined distance from the ascending and suspending position U. Function memory 3 is installed in a controller 36 which mainly performs arithmetic control mainly by a CPU provided in the vicinity of the operating device 16, and as shown in FIG. 3, the input side of the controller 36 is connected via an input interface 37. The mowing position sensor 2, the mowing position sensor 34, the grain culm sensor 28, the mowing clutch switch 31, etc. are connected to each other, and the output side is connected via an output interface 38 to a mowing solenoid 32a, a mowing solenoid 32b, and a mowing solenoid 32b. Unclutched relay 35a
And the mowing clutch disengagement relay 35b are connected to each other.

In the mowing operation, when the turning for changing the direction of the machine body 19 is performed in the headland of the field, etc., the cutting device 1 is supplied at the end of mowing the napped culms before moving to this turning direction. Since the grain culm of the transport unit 14 is interrupted, the grain culm sensor 28 detects the discontinuity of the grain culm of conveyance and turns on the automatic lift mechanism R. By this ON, the telescopic cylinder 15 is extended by the action of the harvesting solenoid 32a. The reaping device 1 is rotated upward about the rotation support shaft 22 and the reaping suspension 27
And the effect of.

In the ascending stroke of the reaping device 1, the non-volatile memory 3 is first detected by the reaping position sensor 2 acting by the rotation of the post-suspension link 27b of the suspension 27.
Detecting the transmission stop position P stored and stored, the cutting and disengaging clutch disengagement relay 35b is turned on, and the clutch control motor 33 is rotated by this ON to stop the transmission of the harvesting device 1 and the threshing device 9. Next, the reaping device 1 is further moved up and stored in the non-volatile memory 3, and the transmission stop position P is set.
When the harvesting position sensor 2 detects that the climbing stop position U, which is higher by a certain interval, has been reached, the raising of the harvesting device 1 is stopped.

After the turning is carried out together with the action of these automatic lift mechanisms R, and at the same time when the turning is completed, the harvesting device 1 is lowered by the manual operation of the power steering lever 30 and the next row is aligned. , Continue the reaping work. During such a mowing operation, for example, when the soil surface becomes soft and the one that has been turning by the pivot turning until then is switched to the spin turning, the turning speed is remarkably increased, and thus the cutting device during turning. The rising stop position U of No. 1 needs to be kept low, and when the traveling crawler 5 sinks, the rising stop position U of the reaping device 1 needs to be raised. The position is changed and adjusted, but at the same time as the change adjustment, the memory setting position of the transmission stop position P can be automatically stored and set to a position lower than the rising stop position U by a predetermined interval, so that complicated cutting is performed. Even during work, the set positional relationship between the both is always kept accurately and easily at a constant interval, and when the reaper 1 is raised by the automatic lift mechanism R, the transmission of the reaper 1 and the threshing device 9 is performed. No doubt it is possible to automatically stop.

The raising section 11 for raising the culms culled by the vegetation body 10 has a plurality of raising cases 40 each having a raising lug 39 extending in the left-right direction according to the number of cut culms. The grass bodies 10 are arranged in an array with the upper part facing diagonally rearward. The raising case 40 is located at the rear side and serves as a guide for the raising lug 39, and the guiding cover 42 is located at the front side and serves as a cover for the raising lug 39.
And are assembled by superposition, and the guide base 4
In FIG. 1, a lug guide 43 that raises the pull-up lug 39 and guides it upright for action is pulled up and fixed over the entire length on the path side. The raising gear case 44 transmitted from the cutting gear case 24 is mounted on the upper rear surface of the guide base 41,
A sprocket 46 is axially fixed to a pulling shaft 45 protruding from the pulling gear case 44 into the guide base 41 and wound around the sprocket 46 and a floating roller 47 supported at the lower end position of the lug guide 43. A plurality of pull-up lugs 39 are erected on the pull-up chain 48 at appropriate intervals so as to stand and fall.

In the guide base 41, in the non-acting side region of the pull-up lug 39, from the side of the sprocket 46 on the upper side to the upper end of the peripheral edge 49 of the idler roller 47 on the lower side, trapping of straw chips and The notch is opened to prevent accumulation, and when the pulling lug 39 enters the peripheral edge 49 through the notch, the peripheral edge 49 and the upper end side of the peripheral edge 49 are prevented from interfering with the pulling lug 39. As the tongue 50 is inclined rearward, and the tip of the tongue 50 is further bent backward to form a bent portion 50a.

The rotation of the raising chain 48 causes the raising lug 39 to move.
Stands up when passing through the lug guide 43, and is held by the guide base 41 and the guide cover 42 to raise the grain culm. Becomes the non-working side. In such a raising operation, the chains are originally liable to be stretched, and particularly in the raising chain 48, which is liable to be covered with mud or water, the elongation is remarkable, and the elongation is caused by the case 4.
As shown in FIG. 6, the pulling chain 48 is also loosened in the rearward direction to the extent that the pulling lug 39 interferes with the tongue 50 of the lower peripheral portion 49 of the guide base 41, as shown in FIG. Due to the slack, the raising lug 39 causes the tongue portion 5
Even if it interferes when entering 0, this tongue 50
Since the bent portion 50a is provided at the tip of the tongue, damage and damage due to wear caused by the pulling lug 39 interfering with the edge of the tip of the tongue 50 as in the prior art are avoided, and durability is improved. Can be achieved.

[Brief description of drawings]

FIG. 1 is a side view showing the entire combine.

FIG. 2 is an operation diagram showing a relationship between a lift stop position and a transmission stop position when the reaping device is lifted.

FIG. 3 is a block diagram showing a control relationship relating to raising and lowering of the reaping device.

FIG. 4 is a side view showing the entire raising case.

FIG. 5 is a front view showing a state where a cover of a part of the raising case is removed.

FIG. 6 is a side view showing a partial cross section of the raising case, in which a) is a normal state and b) is a state in which the raising chain is extended.

[Explanation of symbols]

 1. Mowing device 2. Mowing position sensor 3. Non-volatile memory R. Auto lift mechanism U. Ascending stop position P. Transmission stop position

Claims (1)

[Claims] 1. An elevation stop position U of an automatic lift mechanism R that detects the end of mowing of grain culms and automatically raises the reaper 1, and stops the elevation when the reaping position sensor 2 detects it. And the transmission stop position P for stopping the transmission of the reaping device 1 in the ascending stroke at a lower fixed interval before reaching the elevation stop position U, based on the storage setting of the elevation stop position U. An automatic harvesting stop device for combine harvesters.