JPH10262437A - Handling depth adjustment device for combine etc. - Google Patents

Abstract

(57) [Summary] [Problem] When adjusting the handling depth of a cereal culm during threshing of a combine, the problem that the handling depth position fluctuates suddenly due to a change in the length of the cereal stalk due to the adjustment of the cutting height and prevents a problem that occurs. I do. Kind Code: A1 A handling depth position of a grain culm supplied to a grain culm supply port 2 of a threshing device 1 is adjusted to be deep or shallow by operating a handling depth adjusting means 4 based on a detection value of a handling depth sensor 3. When the cutting height of the cutting device 6 is manually adjusted up and down in a combine or the like for controlling and nipping and carrying the feed chain 5 for threshing, a predetermined distance set before the cutting height is adjusted. During traveling of the vehicle, the cutting depth position set at the time of adjusting the cutting height is maintained, and after traveling this fixed distance, the control of the treatment depth position by the treatment depth adjusting means 4 is performed again. And a configuration of a handling depth adjusting device characterized by the following.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for adjusting the handling depth of a combine or the like, such as a device for automatically adjusting and controlling the handling depth position of a grain culm supplied to a threshing device by a handling depth adjusting means. It belongs to the field and can be used for agricultural work machines such as combine harvesters.

[0002]

2. Description of the Related Art At the time of work in a combine or the like, when a culm cut by a reaper is transported to a threshing device and the culm is supplied to the threshing device, the length of the culm culm length is reduced. The handling depth adjusting means is operated by the information of the handling depth sensor etc. which detects the length, and the handling depth position of the grain stalk is adjusted to be deep or shallow with respect to the grain stalk feeding port of the threshing machine, Generally, the threshing is performed by sandwiching the side with a feed chain.

[0003] However, the action of adjusting the handling depth normally makes the response extremely sensitive in order to reduce the time lag between the detection of the length of the culm and the adjustment of the handling depth. When the cutting height is adjusted manually, the depth of handling often fluctuates rapidly due to the change in the length of the cut culm, so the depth of handling becomes too shallow. If the processing depth position is too deep,
Problems such as the threshing work being hindered by an increase in threshing load occurred.

Accordingly, the present invention prevents the occurrence of a problem due to a sudden change in adjusting the handling depth position and improves the stability at the time of adjusting the handling depth.

[0005]

According to the present invention, a threshing apparatus 1 is provided.
The handle depth position of the grain stalk supplied to the grain stalk supply port 2 is controlled to be deep or shallow by operating the handle depth adjusting means 4 based on the detection value of the handle depth sensor 3, and the feed chain 5 is controlled. In a combine or the like for pinching and transporting and threshing, when the cutting height of the reaping device 6 is manually adjusted up and down, while traveling a predetermined distance from the time when the cutting height is adjusted, the cutting is performed. The processing depth is maintained in the state of the processing depth set at the time of the height adjustment, and after the traveling for a certain distance, the processing of adjusting the processing depth by the processing depth adjusting means 4 is performed again. The configuration of the adjustment device.

[0006]

According to the above configuration, when the stalks mowed by the mowing device 6 are sent to the threshing device 1 and the feed chain 5 of the threshing device 1 is clamped at the root of the stock, for example, it is placed at an appropriate position of the mowing device 6. Based on the value detected by the depth sensor 3 that detects the length of the culm length, the depth control unit 4 operates to automatically determine the depth position of cereal culm with respect to the culm supply port 2 of the threshing device 1. The adjustment control is made to be deep and shallow, but when the adjustment control of the handling depth is executed, the reaper 6 is manually operated by a power steering lever or the like for some reason.
Is moved up and down to adjust the cutting height, from the time when the cutting height is adjusted to the time when the cutting travel of a predetermined distance set by the handling depth adjusting means 4 is completed. Then, the handle depth position at the time when the cutting height was previously adjusted is kept as it is, and the control of adjusting the handle depth is performed again from the time when the traveling of the fixed distance is completed.

[0007]

As described above, during the threshing operation in the combine, the handling depth adjusting means 4 controls the handling depth position of the supplied grain culm to the grain culm supply port 2 of the threshing apparatus 1 to be deep or shallow. In addition, when the cutting height of the mowing device 6 is manually adjusted, from the time of the adjustment to the end of traveling a fixed distance, the depth of operation at the time of the adjustment is held as it is, Even if the adjusting action of the handling depth is made to respond extremely sensitively as necessary, the handling depth does not suddenly fluctuate due to the change in the length of the harvested culm as in the past. Adjusting the handling depth without causing problems such as increased grain loss due to unhandled position due to too shallow position, and increased threshing load due to too deep handling depth position. Too shallow and deep in To prevent hunting due technique, improves the stability of the threshing depth regulation can be achieved high efficiency of threshing performance.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings for a combine. A traveling device 9 having a pair of right and left traveling crawlers 8 traveling on the soil surface is disposed below the undercarriage 7 of the combine, and on the undercarriage 7, threshed grain culm supplied to the feed chain 5 is nipped. Then, a threshing apparatus 1 having a grain tank 10 for selectively collecting the threshed grains and temporarily storing the threshed grains is mounted.

At the front side of the threshing device 1, a weeding body 11 for weeding the planted grain culm from the front end position, a raising part 12 for causing the weeded grain culm, and a cutting blade for cutting the caused grain culm. Unit 13, a scraping and conveying unit 14 for scraping and transporting the harvested grain culm, and a supply and transporting unit 1 for taking over the grain culm to be scraped and transported and transferring it to the feed chain 5.
The mowing device 6 having a height of 5 and the like is configured to be able to move up and down on the soil surface.

An operation device 16 for controlling the operation of the combine is provided on one side of the reaper 6 and an operation seat 17 for this operation.
The grain tank 10 is provided behind the operation seat 17.
And threshing device 1, reaper 6,
Combine airframe 1 by running device 9, operating device 16, etc.
8. In the cereal stalk transport path formed by the scraping transport unit 14 and the supply transport unit 15 of the mowing device 6, a cereal stalk sensor 19 for detecting the presence or absence of a transported cereal stem and a cereal stalk sensor 2 after
0, each of which is provided on the feeder / transporter 15 of the reaper 6 in which a tip end side of a grain stalk is held by a tip feed lug 21a and conveyed, and a stock side is a stock feed chain. 22a
And a stock feeder 22 for holding and transporting the cereals is vertically separated from each other. At the same time, the cereal stalk transported by the supply transporter 15 is sent to the cereal culm supply port 2 of the threshing apparatus 1 and the The base of the stock is arranged so as to be sandwiched by the feed chain 5.

The length of the grain culm supplied to the grain culm supply port 2 of the threshing apparatus 1 is set at an appropriate position of the support pipe 15a for supporting the holding rod and the holding rod for the grain culm in the head and stock transport sections 21 and 22. A handle depth sensor 3 for detecting the handle depth according to the length, a head-side detection rod 3a capable of detecting the position of the ear tip side, and a head-side detection rod 3b capable of detecting the position of the ear base.
And are arranged at appropriate intervals.

The handling depth sensor 3 detects the deep handling when both the spike-side detection rod 3a and the spike-side detection rod 3b are turned ON, and the spike-side detection rod 3a and the spike-side detection rod 3b are both OF
When F is detected, shallow handling is detected, and when the spike-side detection rod 3a is OFF and the spike-side detection rod 3b is ON, an appropriate position is detected. These detection values are sent to the handling depth adjusting means 4 so that the handling depth is automatically adjusted and controlled.

A handling depth motor 23 for adjusting the handling depth by swinging the front end side of the supply / transportation unit 15 up and down by a pivot point provided near the rear end of the supply / conveyance unit 15 is provided. A swing arm 24 provided at an appropriate position on the lower surface side of the original transport unit 22
And the motor 23 is provided with a deep-direction drive relay 25 and a shallow-direction drive relay 26 that respectively drive the motor 23 to a side where the handling depth of the supplied grain culm is increased and a side where the handling depth is reduced.

A vehicle speed sensor 27 for detecting the vehicle speed is provided on the transmission path of the traveling transmission case 28, and a handling depth control switch 29 for automatically controlling the handling depth;
A power steering lever 30 for raising and lowering the reaping device 6 by rotating vertically is arranged on one side of the operation device 16.
As shown in FIG. 2, a controller 31 is provided for performing arithmetic control of an automatic circuit by mainly disposing a CPU. The controller 31 controls the automatic adjustment of the handling depth and simultaneously performs the control from the point of time when the cutting height is adjusted. It has a built-in depth control means 4 for locking the depth position until the end of traveling for a set fixed distance (or a fixed time). , A stalk sensor 20, a vehicle speed sensor 27, and a handling depth control switch 29 are connected to each other, and the deep drive relay 25 and the shallow drive relay 26 are connected to the output side thereof.

At the time of combine operation, the culm sensor 19
When both the stalk sensor 20 and the culm sensor 20 are turned on, first, as shown in the flowchart of FIG. 1, it is checked whether the handling depth control switch 4 is ON.
In a step, it is checked whether or not there is a request for adjusting the handling depth based on the detection of the handling depth sensor 3. If YES, it is checked in a second step whether or not the cutting height has been adjusted by the power steering lever 30. If the answer is YES, in the third step, it is checked whether or not the vehicle has traveled a predetermined distance (for example, 40 to 100 cm) set in the handling depth adjusting means 4 by calculation with the detection value of the vehicle speed sensor 27, and Y
In the case of ES, in the fourth step, the handling depth adjustment means 4 outputs the deep drive relay 25 or the shallow drive relay 26 to drive the handling depth motor 23 according to the detection value of the handling depth sensor 3. , The feeder 15 by the swing arm 24.
Is controlled to adjust the position of the depth of handling of the grain stalk by swinging up and down.
When the first step and the third step are NO, the process is returned, and when the second step is NO, the process is skipped to the fourth step.

As described above, by locking the adjusting operation of the handling depth for a certain distance from the time of adjusting the cutting height, even if the grain stalk length changes due to the adjustment of the cutting height, the handling depth position suddenly changes. Hunting due to too shallow and too deep when adjusting the handling depth, to prevent the occurrence of unhandled due to too shallow and to increase the threshing load due to too deep and adjust the handling depth And the threshing performance can be made more efficient.

As another embodiment different from the above, as shown in FIG. 4, a cutting device 33 is provided at the front of the combine by vertically rotating the turning support shaft 32 as a fulcrum, and the cutting device 33 is turned up and down. A cutting position sensor 34 for detecting a moving angle is provided in the vicinity of the rotating support shaft 32, and a cutting height sensor 3 for receiving an ultrasonic wave and detecting a cutting height.
5 is mounted downward on the lower rear side of the lower frame 37 that supports the weeding body 36 of the mowing device 33.

An upper switch 38a and a lower switch 38b, such as touch switches, which turn on the lodging culm on the upper surface side of the weed body 36 and the soil surface on the lower surface side, respectively.
And a position slightly lower than the upper and lower intermediate position of the raising portion 39 of the mowing device 33 and the lower frame 37.
An upper sensor 40a and a lower sensor 4 for receiving the ultrasonic waves emitted to the front lower portion and detecting the lodging state of the planted grain culm, respectively.
0b is mounted forward. Separately, a vehicle speed sensor 41 for detecting the vehicle speed is provided.

As shown in FIG. 5, there is provided a controller 42 which mainly arranges a CPU and performs arithmetic control of an automatic circuit. The controller 42 determines the falling state of the grain stem based on information of switches and sensors. A lodging determining means 43 is built in, and the cutting position sensor 34, the cutting height sensor 35, the upper switch 38a, the lower switch 38b, the upper sensor 40a, the lower sensor 40b,
The vehicle speed sensors 41 are connected to each other, and an output side thereof is connected to an ascending electromagnetic valve 44 and a descending electromagnetic valve 45 for moving the reaper 33 up and down.

When there is no input to any of the switches or sensors during mowing travel, the mowing device 33 is lowered until the lower switch 38b is turned on or the lower sensor 40b detects it. At this time, when the upper sensor 40a is not detected and the lower sensor 40b detects it, it is determined that it is in the down state, and the lower switch 38b is brought into contact with the soil surface and lowered until it is turned on.

After the lower switch 38b is turned on, a calculation is performed based on the detected value of the cutting height by the cutting height sensor 35 and the detected value of the vertical rotation angle of the cutting device 33 by the cutting position sensor 34. The grass body 36 is held so as not to penetrate into the soil surface, and while the upper switch 38a is ON due to the contact of the grain stalk, it is determined that the plant is in the lying state, and the low mowing is maintained continuously.

In the case where the planted grain culm is in a falling state from the middle, for example, in a state where the upper sensor 40a is not detected and the lower sensor 40b is detected, it is determined that the falling grain culm exists in front. After the judgment, the vehicle speed is reduced by the vehicle speed sensor 41, and the mowing device 33 is lowered until the lower switch 38b is turned on to perform low mowing. In this way, the on / off state of the upper and lower switches 38a, 38b and the detection values of the upper and lower sensors 40a, 40b, which are provided on the weeding body 36 and the rear side in the vicinity thereof, determine the lodging determination means 4.
The cutting height and the vehicle speed can be controlled by judging the lodging state of the grain culm according to 3, so that the cutting of the falling grain culm can be performed smoothly.

As another embodiment different from the above, as shown in FIG.
The first and second from the left end of the seven rows of grain stalks are defined as a two-row cutting path A, and the third adjacent to the cutting path A is defined as a single-row cutting path B. The fourth and fifth adjacent to the passage B are defined as two rows of cutting passages C, and the sixth and seventh adjacent to the cutting passage C are respectively configured as two rows of cutting passages D.

In contrast to the case where the cutting rows are arranged in the right direction with reference to the left end side, the case where the cutting rows are arranged in the same order in the left direction with reference to the right end side is structurally functional. It does not change. The cutting paths A, B,
At C and D, a weeding body 47 and a raising portion 48 are respectively provided from the front end side to the rear side, and behind each raising portion 48, a scraping lug belt 49, a scraping star wheel 50, and a scraping sprocket 51 are provided. It is configured by arranging a scraping portion.

A transfer collection chain 53 which extends from the raking sprocket 51 located in the seventh row of the cutting passage D to the supply / conveying section 52 at the rear is extended.
A middle collection chain 54 that extends from the raked sprocket 51 located in the third row to the transfer / collection chain 53 extends, and then is taken over from the raked sprocket 51 located in the third row of the cutting path B. A single-row collecting chain 55 to be taken over by the collecting chain 53 is extended, and the culm can be pinched and transported by the succeeding collecting chain 53, the middle collecting chain 54 and the single-collecting chain 55 by a spring or the like. Right take-over gripping rod 5 urged by force
6, middle take-over holding rod 57, middle holding rod 58, single-carrying holding rod 59
Are arranged respectively.

Next, a left collecting chain 60 to be taken over from the raking sprocket 51 located in the second row of the cutting path A to the supply / transport section 52 together with the taking over collection chain 53 is extended. A left holding rod 61 urged by a spring or the like is arranged so as to be able to hold and transport the culm by the feeding chain 60. In this way, by setting the third row from the left end of the seven rows of grain culm cutting rows as the single row of the cutting passage B, the single row of grain culm of the cutting path B is Since the four rows of grain culms of the harvesting passages C and D, which are better transported from this passage B, are gathered and merged, and finally the two rows of the grain culm of the harvesting passage A are merged to form a transport route. There are few transport divisions compared to those on transport routes such as
Stable combined transfer performance can be obtained.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a control procedure for adjusting a handling depth position of a grain stalk.

FIG. 2 is a block diagram showing an electric circuit related to automatic control.

FIG. 3 is a side view showing the overall configuration of the combine.

FIG. 4 is a schematic side view showing a mowing device for mowing a fallen grain stalk as another embodiment.

FIG. 5 is a block diagram showing an electric circuit related to automatic control as another embodiment.

FIG. 6 is a plan view showing a configuration of a stalk conveying relationship of a mowing device as another embodiment.

[Explanation of symbols]

 1. Threshing device 2. Grain supply port 3. Handling depth sensor 4. 4. Handling depth adjustment means Feed chain 6. Reaper

Claims (1)

[Claims] The handling depth position of a grain culm supplied to a grain culm supply port 2 of a threshing device 1 is set to be deep or shallow by operating a handling depth adjusting means 4 based on a detection value of a handling depth sensor 3. When the cutting height of the cutting device 6 is manually adjusted up and down in a combine or the like in which the adjustment is controlled and the feed chain 5 is nipped and conveyed to perform threshing, a predetermined constant value is set from the time when the cutting height is adjusted. While traveling the distance, the cutting depth position set at the time of cutting height adjustment is held, and after this constant distance traveling, the adjustment control of the handling depth position by the handling depth adjustment means 4 is performed again. A handling depth adjusting device, characterized in that: