JPH11206227A - Device for regulating position of threshing depth sensor in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for regulating the position of a threshing depth sensor in a combine harvester, capable of solving the problem of difficulty of controlling operation from a driver sheet because an operation lever for changing and controlling the position of a culm length-detecting sensor is installed in a position extremely lower than a dustproof cover. SOLUTION: A grain culm conveying device 4 for conveying and supplying grain culms to a threshing device 2 has a threshing depth-regulating device 5 installed as a part thereof. A dustproof cover 6 for covering the grain culm- conveying device 4 in the upper direction has at lest a front cover 6a fixed to a home position at the front part. A culm length-detecting sensor 8 connected to a controller for controlling the threshing depth-regulating device 5 is formed so that the position may be changed and regulated in the culm length direction at the upper position of the grain culm-conveying device 4. An operating lever 9 for changing and regulating the culm length detecting sensor 8 is installed at the rear part of the rear terminal edge of the front cover 6a and at the height nearly same as that of the front cover 6a to provide the objective device for regulating the position of the threshing depth sensor in a combine harvester.

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 position of a combine depth sensor, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Conventionally, a combine has been provided with a cereal culm conveying device for conveying and supplying cereal culm from a front mowing device to a threshing device on a vehicle body. In order to prevent debris and dust from scattering to the outside, the conveying passage for the grain stalk is covered with a dustproof cover from above. The combine is equipped with a handling depth adjusting device that is controlled based on detection information of a culm length detection sensor provided to face the transport passage.

[0003]

Conventionally, a combine is provided with a sensor for detecting the culm length of a transported cereal culm, which is provided above the cereal culm transport device, and the handling depth is automatically controlled based on the detected information. It has become. The above-mentioned culm length detection sensor adjusts the position of the culm in the direction of the culm in advance in accordance with the difference in culm length depending on the variety of rice and the region where it is cultivated. And started harvesting and threshing work.

In this case, in the conventional combine, the above-mentioned operation lever is provided inside the front dust-proof cover, or is provided at a position much lower than the dust-proof cover, and the adjusting operation from the driver's seat is performed. There was a problem that was extremely difficult.

[0005]

SUMMARY OF THE INVENTION The present invention takes the following technical means in order to solve the above-mentioned problems. That is, in front of the threshing device 2 mounted on the traveling vehicle body 1, a grain stalk transport device 4 for transporting grain stalks to the threshing device 2 from the vicinity of the mowing device 3 mounted at a low position is provided. The grain stalk transport device 4 is provided with a handling depth adjusting device 5 as a part thereof, and the dust cover 6 that covers the grain stalk transport device 4 from above is fixed at least in a fixed position at the front. A culm length detecting sensor 8 connected to a controller 7 for controlling and controlling the handling depth adjusting device 5 is provided with a front dust-proof cover 6a. The operation lever for changing and adjusting the position of the culm length detection sensor 8 is provided so that the position can be adjusted.
Numeral 9 is a combine depth sensor position adjustment device provided at the rear of the front edge of the front dust cover 6a and at a height substantially equal to that of the front dust cover 6a.

[0006]

According to the present invention, the operation lever can be operated relatively easily from the driver's seat without being hindered by the dust cover. It has the feature that the position can be changed and adjusted. Furthermore,
The sensor and the operating lever are arranged at a position close to the rear edge of the front dustproof cover, so that there is an effect that a sufficient space for supplying a pillow-handled grain culm can be secured in front of the threshing device. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the configuration will be described.
As shown in FIG. 5, the traveling vehicle body 1 is provided with a crawler 10 molded from rubber, so that it can travel without sinking not only in dry fields but also in wet fields.
The threshing apparatus 2 has a feed chain 11, a handling chamber having a handling cylinder mounted on the upper side, and a sorting chamber on the lower side.
The traveling vehicle body 1 with the grain stalk supply port continuous to the handling room facing forward.
Mounted on top.

As shown in FIGS. 1 and 3, the pre-cutting device 12 includes a support base 1 provided at a front portion of the traveling vehicle body 1.
3, a mowing frame 15 having a main mowing frame 14 extending downward at the front as a main component, a weeding rod 16 from the front, and a grain provided in an inclined state. Stalk raising device 17
And a harvesting device 3 at a low position, and a grain culm transport device 4 extending from the vicinity of the harvesting device 3 to the start end of the feed chain 11, and supported vertically by a harvesting elevating cylinder 18 composed of a hydraulic device. Make up.

More specifically, as shown in FIGS. 1 and 3, the cereal culm transport device 4 is provided above the reaping device 3 provided at a low position behind the cereal culm raising device 17 described above. Although it is provided between the start position of the feed chain 11 of the threshing device 2 from the vicinity position, a scraping device 19 is provided at the start position.
However, behind it, the stock transport chain 20 and the tip transport lug 2
1 is provided at the rear position in the order of the handling depth adjusting chain 5 (corresponding to the "handling depth adjusting device 5") and the feeding and transporting device 22. 11 and is supplied to the threshing apparatus 2.

[0010] The handling depth adjusting chain 5 and the feeding and conveying device 22 are controlled based on the detection result of the culm length detecting sensor 8 (head sensor 8a and stock sensor 8b) provided above the grain culm conveying device 4. The depth control is performed by a control signal output from the controller 7. Next, as shown in FIG.
In order to cover the above-mentioned grain culm conveying device 4 from above, between the upper position of the hull and the grain culm supply port of the threshing device 2, it is divided into two parts: a front dust cover 6 a and a rear dust cover 6 b. It is composed.

In view of the above, first, as shown in FIGS. 1 and 3, a component supporting the dustproof cover 6 is a front and rear frame 23 (the front portion of which is connected to the upper side of the reaper frame 15). In the upper machine frame of the culm raising device 17, the rear part is the main frame 1
4 respectively) and the left support frame 24
(The front part is raised and connected to the middle part of the supporting frame, and the rear part is a free end.) And the two frames 23 and 24 are connected across the middle part of the grain culm conveying device 4. It comprises an inverted U-shaped horizontal connecting rod 25.

Next, as shown in FIG. 4, the front dust-proof cover 6a has its front edge superimposed on the upper side of the raising cover 26 which is arranged laterally above the grain stem raising device 17. And connected and fixed, and provided on the above-described constituent members,
It is arranged to extend rearward along the upper part of the grain stalk transport device 4. The front dust cover 6a has its rear portion connected to and supported by the horizontal connecting rod 25 described above.

Next, the rear dust cover 6b is provided such that its front end is positioned above the rear of the front cover 6a, and its rear end is extended to above the grain culm supply port of the threshing apparatus 2, and A part hanging down from the side is formed to cover the grain culm transport device 4 from above. And the rear dust cover 6b
The guide rails 27, 27 'fixed to the left and right inner sides along the front-rear direction are symmetrically protruded from the horizontal connecting rod 25 to both left and right outer sides, and are mounted on a shaft. La 28,
28 'is fitted and supported, and a rotating arm (not shown) is attached to the rear part so as to be freely slidable back and forth.

The above-mentioned guide rails 27, 27 'are
The rollers 28 and 28 'are slidably fitted with a U-shaped cross section. In this way, the dust cover 6 is configured so that the rear dust cover 6b can slide back and forth along the upper surface of the fixed front dust cover 6a at a fixed position. The driver's seat 29 is arranged on the side of the dust cover 6 so that the operation device can be operated on the operation panel by concentrating the operation device.

Next, as shown in FIG. 2, the culm length detecting sensor 8 comprises a head sensor 8a for detecting the culm length of the transported grain culm and a stock sensor 8b. The above-mentioned two sensors 8a and 8b are attached to a support member 31 fixed to the tip of a sensor support rod 30 attached to the frame 23 and viewed from above the grain conveying device 4.
Is attached by pivotally attaching a sensor box 32 having a downward slant. The operation lever 9 is constructed by connecting the sensor box 32 pivotally supported by the support member 31 so as to be able to rotate. In this case, the operation lever 9 is Lever guide surface (guide groove)
The sensor box 32 is attached to the lower side of the lever guide surface by pivotally connecting the lower end in a vertical direction so as to be guided vertically. Then, as shown in FIG. 2, the sensor box 32 is brought into contact with the integral spike sensor 8 a and the stock sensor 8 b that are hanging downward in a state almost perpendicular to the culm of the transported grain culm. It is configured to maintain the inclined state so that the culm length can be detected.

As shown in FIGS. 1 and 4, the operation lever 9 is located slightly behind the rear edge of the front dust cover 6a, and the upper surface of the front dust cover 6a. It is configured to be located at a height approximately equal to the height of the driver's seat 29 and can be easily operated from the driver's seat 29. And operation lever 9
Is configured to be a related position where the rear dust cover 6b is covered on the inside when the cover is in a state where the rear dust cover 6b is positioned on the threshing apparatus 2 side.

The head sensor 8a and the stock sensor 8b
As shown by the solid line and the imaginary line in FIG. 2, the position of the sensor box 32 integrally mounted is adjusted by the operation lever 9, so that the relative positions of the two sensors 8a and 8b do not change. The position in the direction of the culm can be adjusted with the pivot point as a fulcrum. In the sensor box 32, a potentiometer is provided and both sensors 8a, 8b
(Amplitude) is detected and input to the controller 7.

Next, the controller 7 is connected to the input side as shown in FIG.
As shown in FIG.
a, stock sensor 8b, threshing sensor 34, vehicle speed sensor 3
5. The handling depth adjustment chain position sensor 36 is connected. The controller 7 has an output side to which a handling depth adjusting motor 37, a monitor 38, and a buzzer 39 are connected. And the controller 7
In the case of the embodiment shown in FIG. 6, the shift operation motor 4 is provided on the output side.
0, a Kara motor 41 and a sheave motor 42 are connected to each other.

The controller 7 stores various reference data in advance, sets and stores necessary conditions, and turns on the automatic handling depth switch 33 to turn on the threshing sensor 34. The automatic control mechanism is configured to start up when (the sensor which is turned ON when the threshing clutch is input) is turned ON. The sensor box 32 of the embodiment
Employs a configuration in which a position sensor is provided as described above and the detection width (amplitude) of the tip sensor 8a and the stock sensor 8b is monitored, and based on this, the detection information is sent to the controller 7.
Is input. In this case, the controller 7
Is configured such that when the position sensor does not vibrate due to the weeds or the like entangled in the tip or the stock sensors 8a and 8b from the state of the normal amplitude shown in the left diagram of FIG. The controller 7 according to the embodiment includes a head sensor 8
When an abnormality occurs in the sensor a or the stock sensor 8b, an alarm is output immediately and the buzzer 39 sounds, and the handling depth adjusting motor 37 is set to handle slightly deeper than the reference position (by setting conditions in advance). The operation depth is adjusted to output a control signal to control and adjust the handling depth adjusting chain 5. Therefore, the combine of the embodiment has an advantage that even if an abnormality occurs, the work can be continued to a point where the work can be separated without immediately repairing or adjusting the control mechanism.

The controller 7 constructed as described above sets the standard depth position when the tip of the grain culm to be conveyed passes through the middle between the stock sensor 8b and the tip sensor 8a. doing. Therefore, the handling depth adjusting chain 5 is
When both the tip sensor 8a and the stock sensor 8b are in the detection state, it is determined to be in the deep handling state, and is automatically adjusted to the shallow handling position. Conversely, when the tip sensor 8a and the stock sensor 8b do not detect both. Sometimes, it is determined that the state is a shallow handling state and the control is automatically adjusted to a deep handling position.

Another Embodiment 1 Hereinafter, another embodiment 1 will be described with reference to FIGS. 6 and 9. The first embodiment relates to a configuration in which the layer thickness of the transported grain culm is detected by using the culm length detection sensor 8 and the sorting control of the threshing apparatus is performed. First, in the threshing apparatus 2, as shown in FIG. 9, a handling cylinder 46 for threshing ears of grain culm conveyed by the feed chain 11 is mounted on a handling chamber 45 arranged on the upper side, and below the handling chamber 46, And a sorting room 47 is provided. In the sorting room 47, a swing sorting shelf 48 is erected on the upper side so as to swing freely, and on the lower side, in order from the upper side in the sorting direction, Karamin 49, the first transfer spiral 50, the second transfer spiral. 51 is mounted on a shaft. And the swing sorting shelf 48
Are transfer shelves 52, sheaves 53,
The storage rack 54 is arranged in this order. The sheave 53 is connected to the controller 7 as shown in FIG.
The selection motor is driven based on the operation signal output from the controller to control the width of the separation of the objects to be sorted. Normally, the sieve 53 is configured so as to promote the leakage by widening the separation leakage interval when the amount of the material to be sorted is large, and to adjust the leakage narrowly when the amount is small.

The Karamin 49 is the Karamin model shown in FIG.
Connected to the controller 41, the speed is increased based on the output from the controller 7 when the amount of the sorting object is large, a large amount of sorting wind is generated and supplied to the sorting room 47, and the speed is controlled at a low speed when the sorting amount is small. It is configured to be adjusted to reduce the sorting wind.
In the case of the embodiment shown in FIG. 6, the traveling vehicle 1 has a speed change operation motor 40 connected to the output side and automatically controls the traveling speed in accordance with the amount of cereal culm supplied to the threshing apparatus 2. (The gear shifts at a low speed when the cereal stem supply amount is large, and at a high speed when the grain stem supply amount is small.)

In the case of another embodiment 1, the stock sensor 8
b (or the tip sensor 8a) detects the thickness of the transported grain culm in addition to the detection of the original culm length and inputs it to the controller 7. The controller 7 determines that a large amount of grain culm has been supplied to the threshing apparatus when the layer thickness of the transported grain culm is thicker than a reference value, and determines that the grain culm is small when it is thin based on the input detection information. And output a control signal.

As described above, in the first embodiment, the culm length detecting sensor 8 has a function of detecting the thickness of the grain culm layer being transported, in addition to the original function, and inputs the culm length to the controller 7. Then, sorting control is performed. Next, the operation will be described. First, the operator adjusts the position of the culm length detection sensor 8 in order to adjust the position of the culm length detection sensor 8 to the height of the culm in the field where the reaping operation is performed before starting the reaping operation. Is performed by operating the operation lever 9 in the left-right direction with the sensor box 32 and the pivot point as a fulcrum.
In this case, the operation lever 9 is slid to the position where the rear dust cover 6b overlaps the front dust cover 6a and is exposed with the rear open, and is extended from the driver's seat 29 to adjust. Do the operation. After adjustment, the operator slides the rear dust cover 6b backward from above the front dust cover 6a to the threshing device 2 to cover the grain stalk transport device 6 so that the dustproof function can be exhibited. prepare. Then, the combiner starts the engine to transmit the rotating parts of the machine body, turns on the automatic handling depth switch 33, starts the controller 7, moves the traveling vehicle body 1 forward, and starts work.

Then, the culm in the field is replaced with a weeding rod 16 in the front.
After receiving the weeding action from the lower part, the raising rug is raised upward, and the stalk is raised by the action of the cereal stem raising device 17 which is continuing to rotate.
The root portion of the stock reaches the scraping device 19 and is scraped to the reaping device 3 side. The culm is cut off by the cutting device 3, the root of the culm is clamped by the root conveyor chain 20, and the tip side is engaged with the tip transport lug 21 and is transported upward sequentially. Then, the grain culm is supplied from the handling depth adjusting chain 5 to the feeding and transporting device 2.
2 and is fed to the starting end of the feed chain 11 and fed to the grain culm supply port of the threshing device 2. In this way, the grain culm supplied to the threshing apparatus is subjected to threshing by inserting the head portion into the threshing apparatus 2 while the stock is held between the feed chains 11 and conveyed, and the selected grains are subjected to threshing. It is transported to the Glen tank and stored.

During such a series of cutting and threshing operations, the dustproof cover 6 is moved from the upper position of the grain stalk raising device 17 to the scraping device 19, the stock carrying chain 20 and the spike carrying lug 21 behind the scraping device 19. Furthermore, since it covers the handling depth adjusting chain 5 and the feeding and conveying device 22 at the rear position, dust generated due to the conveying action of the grain stalk is prevented from being directly scattered to the outside, and the outside air is dusted as much as possible. Work can be performed while preventing dust from being contaminated.

The controller 7 compares the detection information input from the tip sensor 8a and the stock sensor 8b for detecting the length of the transported grain culm with a reference value stored in advance. While operating signals, the depth adjustment motor 3
7 for automatic control of the handling depth. in this case,
The controller 7 controls the handling depth according to the work procedure shown in the control operation flowchart of FIG. Then, the controller 7 determines that a position where the tip position of the transported grain culm passes between the tip sensor 8a and the stock sensor 8b is an appropriate handling depth position, and performs automatic handling depth control. ing. When the controller 7 detects an abnormality during the operation, the controller 7 interrupts the control and sounds the buzzer 39 as shown in the flowchart, and then, as shown in the flowchart,
The operation can be continued by moving and adjusting the handling depth adjusting chain 5 slightly to the deep handling side. Therefore, in the embodiment, the combine immediately stops the work, repairs the sensor,
There is no need to make any adjustments, and the work can be continued, and since the handling depth adjustment chain 5 is automatically adjusted to the slightly deeply handled position as described above, the threshing work can be continued while minimizing the loss. is there.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is an operation front view of the embodiment of the present invention.

FIG. 3 is a plan view of the embodiment of the present invention.

FIG. 4 is an embodiment of the present invention and is a partially broken plan view.

FIG. 5 is a side view of the embodiment of the present invention.

FIG. 6 is a block diagram of a controller according to an embodiment of the present invention.

FIG. 7 is a flowchart of a control operation according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram illustrating a detection state of a sensor according to the embodiment of the present invention.

FIG. 9 is another embodiment 1 of the present invention, and is a cut-away side view of a threshing apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Running vehicle body 2 Threshing device 3
Cutting device 4 Grain stalk transport device 5 Handling depth adjustment device 6
Dustproof cover 6a Front cover 7 Controller 8
Stalk length detection sensor 9 Operation lever.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shingo Takagi 1st Higashikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Inside

Claims (1)

[Claims] 1. A grain culm conveying device 4 for conveying and feeding cereals to the threshing device 2 from the vicinity of a cutting device 3 mounted at a low position in front of a threshing device 2 mounted on a traveling vehicle body 1. The culm conveying device 4 is provided with a handling depth adjusting device 5 as a part thereof, and the dust cover 6 that covers the cereal culm conveying device 4 from above is at least a front position. A culm length detection sensor 8 which is composed of a front dustproof cover 6a fixed to the culm length transporting device 4 and is connected to a controller 7 for controlling and controlling the handling depth adjusting device 5, The operation lever 9 for changing the position of the culm length detection sensor 8 is provided so that the position can be changed and adjusted in the direction of the culm body. Handling depth of a combine provided at a height approximately equal to that of the cover 6a A sensor position adjustment device.