JP3070111B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester.

[0002]

2. Description of the Related Art Conventionally, a combine harvester is constructed by integrally attaching a lug type raising device, a clipper-type cutting blade device, a scraping device, a harvested grain culm conveying device, etc. to a frame body. An endless belt type traveling device, a threshing device having a feed chain, and the like are integrally provided to form a vehicle body, and the reaper is mounted on the vehicle body by a hydraulic cylinder so as to be vertically movable. Further, a feed transfer device for transferring and transferring the harvested grain culm from the grain culm transport device of the cutting device to the feed chain of the threshing device at the rear is provided.
The feeding and transporting device is located between the harvested grain culm transporting device of the mowing device and the feed chain of the threshing device, and takes over the harvested grain culm from the mowing grain culm transporting device of the cutting device to the feeding and transporting device. By changing the position of the culm sometimes,
The length of penetration of the spike of the cereal stem into the threshing apparatus during transport in feed chain, ie, the handling depth, can be adjusted. Conventionally, the handling depth has been adjusted by detecting the position of the tip of the grain culm by a handling depth sensor provided in the feeding and conveying device, and driving the transmission motor based on the detection result to take over the harvested grain culm. This is done by changing the position of the culm holding the culm.

[0003]

In the aforementioned conventional combine harvester, components such as a weeding rod and a raising device are located in front of the cutting blade device. For this reason, even if it is going to cut the culm to be planted in the ridge etc. by a combine, the cutting blade device cannot be brought close to the ridge. Therefore, the cutting of the grain culm to be planted on the ridge had to be performed manually. When the ridge is low, the mowing device can be raised to a position higher than the ridge, the cutting blade device can be brought closer to the ridge, and the tip of the grain stem planted on the ridge can be cut. However, in this case, the remaining stock is high, and the cut marks are not clean. Moreover, the cut culm is extremely short only at the tip of the ear. The handling depth adjustment is the first operation that takes place after the harvested culm reaches the feeding / transporting device, so when an extremely short harvested grain culm is suddenly conveyed, the adjustment of the handling depth to the appropriate state is performed. In a short time, the subsequent threshing apparatus is in a shallow handling state, and there is a problem that grains are left unhandled.

[0004]

The present invention employs the following technical means to solve the above-mentioned problems.
That is, the harvesting device 5 is constituted by the raising device 1 for causing the grain culm, the cutting blade device 2 for cutting the grain culm, the harvested grain culm transport device 3 for conveying the cut grain culm backward, the traveling device 6, the threshing A car body 9 is constituted by a threshing device 8 having a grain culm conveying device 7 and the like. The reaping device 5 is provided so as to be able to move up and down with respect to the car body 9. 8 is provided with a handling depth adjusting device 10 capable of adjusting the handling depth while taking over and transporting the harvested grain culm between the threshing grain culm transporting device 7 and the cutting blade device 2. Lifting and lowering independently for device 5
The cutting blade stand 28 which is freely configured and supports the cutting blade device 2 has a ground.
Ultrasonic sensor 3 for detecting the distance between the surface and the cutting blade device 2
1, and cuts in relation to the detection result of the ultrasonic sensor 31.
If it is configured to keep the ground height of the blade device 2 constant,
Both, further, in relation to the detection result of the ultrasonic sensor 31
The handling depth adjusting device 10 is configured to be operated for adjustment.
And a configuration of a combine harvester . As described above, in the combine harvester according to the present invention, the cutting blade device 2 is configured to be able to move up and down with respect to the harvester 5. And the ultrasonic sensor 31
Thus, the ground height of the cutting blade device 2 is kept constant. Ma
Also, when cutting culms to be planted on the ridge, etc.
5 to prevent interference with the ridge,
Grain stalks to be planted by lowering the cutting blade device 2 with respect to the device 5
It is possible to cut and cut from the stock side. This state
Grain stalks harvested in a state are, for example,
Ultrasonic sensor even when pinched and transported by the culm transport device 3
31, the handling depth adjustment device 10
Side, so that it can be pulled to
At the time of splicing, the proper position of the culm is pinched and transported, and the handling depth
Can be brought into an appropriate state. This gives an example
For example, it is possible to reduce the remaining unhandled due to shallow handling.

[0005]

The present invention is constructed as described above.
The reaper 5 is related to the detection result of the ultrasonic sensor 31.
Independently of the height of the cutting blade device 2 above the ground.
Can be. Also, when cutting culms to be planted on the ridges, etc.
, The cutting device 5 is raised and the cutting blade device 2 is lowered.
Let it. As a result, the tip of the mowing device 5 protrudes into the ridge.
Interference between the reaper 5 and ridges
Stalks to be planted along the ridges, etc.
Can be taken. Further, the detection result of the ultrasonic sensor 31 is
The adjusting operation of the handling depth adjusting device 10 is performed in relation to the fruits.
Therefore, it is provided directly on the handling depth adjusting device 10 as in the related art.
The need for a handling depth sensor is eliminated, and the ultrasonic sensor 3
1 is located on the upper side of the harvesting device 5 in the grain stalk transport direction.
Mari, a position far from the threshing culm conveying device 7 of the threshing device 8
And Do Runode, clippings were culms said threshing depth adjusting device
There is enough time before it is conveyed to 10 and the handling depth is adjusted.
The clause is in time. Therefore, the culm should be transported at the appropriate position.
Since it is taken over by the feeder 7, it becomes too deeply handled
It is possible to prevent the amount of straw waste from increasing in the threshing device 8, and
In addition, it is possible to prevent the
Can be stopped.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a combine harvester according to an embodiment of the present invention will be described. Combine body 9
Is configured by providing a threshing device 8, a grain storage device 12, a control unit 13, and the like above a traveling device 6 of an endless track type. The reaper 5 includes a vertical transmission cylinder 14, a horizontal transmission case 15, and a frame extending forward from the horizontal transmission case 15, which are rotatably supported on the vehicle body 9. Pipe 1
The cutting frame 4 composed of 6 or the like is provided with a weeding body 17, a lug type raising device 1, a rake device 18 composed of a rug belt and a star wheel, a clipper type cutting blade device 2, and the like. The raising device 1 is supported and driven by a transmission pipe 19 extending upward from the transmission case 15. Further, the transmission case 15 and the vehicle body 9 are connected by a suspension device 20 having a link structure, and the transmission cylinder 1
4 and the vehicle body 9 are connected by a hydraulic cylinder 21. The hydraulic cylinder 21 is operated to extend and retract by the operation of the cutting vertical lever 22 of the control unit 13 or by a conventionally well-known automatic cutting height control device, thereby raising and lowering the cutting device 5.

A handle depth adjusting device 10 is provided coaxially with the vertical rotation axis of the transmission cylinder 14 so as to be vertically rotatable by an electric motor 24. The handling depth adjusting device 10 has a stock-side transfer device 25 and a tip-side transfer device 26, and the front end of the stock-side transfer device 25 is connected to the harvested grain culm transfer device 3 of the cutting device 5. And the rear end of the stock-side transfer device 25 is provided facing the front end of the feed chain (threshing grain culm transfer device 7) of the threshing device 8. The handle depth adjustment is performed by vertically adjusting the front end of the stock side transfer device 25 of the cut depth adjustment device 10 with respect to the rear end of the harvested grain culm transfer device 3 of the cutting device 5. Then, it is performed by changing the clamping position of the culm at the time of taking over the transported grain culm.

The cutting device 5 is provided with a clipper-shaped cutting blade device 2 which can be moved up and down. Vertical sliding bosses 27, 27 are attached to both left and right ends of the cutting frame 4,
The sliding bosses 27 are attached to the cutting blade base 2 of the cutting blade device 2.
8, a vertical sliding pipe 29 standing from both left and right end portions of
29 is slidably fitted. And the said cutting blade stand 28
Is supported by a hydraulic cylinder 30 provided from the mowing frame 4 side.
The cutting blade device 2 is configured to move up and down by expansion and contraction. Further, an ultrasonic sensor 31 for detecting a distance between the ground and the cutting blade device 2 is provided at one of left and right ends of the cutting blade stand 28. Based on the detection result of the ultrasonic sensor 31, the hydraulic cylinder 30 is extended and contracted through the cutting blade height control device, and the height of the cutting blade device 2 is controlled to be constant. Thereby, the cutting blade device 2 can always maintain a constant cutting height by following the field scene regardless of the elevation of the cutting frame 4. The hydraulic cylinder 30 that moves up and down the cutting blade device 2 is provided with a stroke sensor 32 that detects the length of expansion and contraction of the hydraulic cylinder 30. The straw
The claw sensor 32 detects the relative distance between the cutting frame 4 and the cutting blade device 2. The detection value of the stroke sensor 32 is used as a link control device 33 having a CPU.
(Coupling means 11) to output to the electric motor 24 of the handling depth adjusting device 10. When the detection value of the stroke sensor 32 becomes large, the cutting frame 4 is raised and the cutting blade device 2 is moved by the cutting frame 4.
In a state of falling. At this time, the harvested grain culm transport device 3 will hold the ear side of the harvested grain culm,
If it is taken over by the feed chain (threshing grain culm conveying device 7) as it is, it will be too shallow and untreated. However, the connection control device 33 (connection means 1)
According to 1), as the detection value of the stroke sensor 32 increases, the electric motor 24 of the handling depth adjusting device 10 increases.
In the deep handling direction (the direction in which the front end side of the stock side transport device 25 is lowered). As a result, the handling depth is always kept properly, and the occurrence of unhandled portions can be prevented.

In a state where the hydraulic cylinder 30 is fixed in the shortest state and the cutting blade device 2 is integrated at a position closest to the cutting frame 4, the detection result of the ultrasonic sensor 31 is used. The control state may be switched so that the hydraulic cylinder 21 is caused to expand and contract to automatically control the height of the reaper 5. The lifting and lowering of the cutting blade device 2 with respect to the cutting frame 4 (expansion and contraction of the hydraulic cylinder 30) and the handling depth adjustment by the handling depth adjustment device 10 (operation of the electric motor 24) are each ahead. It is preferable to be able to operate not only automatically but also manually.

The traveling device 6 is of an endless belt type, in which a roller 37 is looped around a group of wheels 35 and a drive sprocket 36 which are mounted on a wheel frame 34. An elastic plate 38 is attached to the side surface of the wheel frame 34 at an angle to the traveling direction in plan view. And
By the elastic plate 38, mud which invades the inner periphery of the crawler at the time of traveling is scraped out and led out between the left and right crawler 37. Accordingly, it is possible to prevent the mud soil from being carried to the uncut culm side during the cutting traveling, which may hinder the cutting operation in the next step. In addition, it is possible to prevent adhesion of mud to the group of wheels 35 and biting of foreign matters such as stones, and it is possible to maintain smooth running without removing wheels.

[Brief description of the drawings]

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

FIG. 2 is a side view of the combine according to the embodiment of the present invention.

FIG. 3 is a plan view of a combine according to an embodiment of the present invention.

FIG. 4 is a partial control circuit diagram in one embodiment of the present invention.

FIG. 5 is a perspective view of a main part in one embodiment of the present invention.

FIG. 6 is an explanatory perspective view of a main part in one embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Raising device 2 Cutting blade device 3 Cutting grain culm transfer device 4 Cutting frame 5 Cutting device 6 Traveling device 7 Threshing grain culm transfer device 8 Threshing device 9 Body 10 Handling depth adjusting device 11 Connecting means 28 Cutting blade stand 31 Ultrasonic sensor

Claims (1)

(57) [Claims] 1. A mowing device 5 comprising a raising device 1 for raising a grain stalk, a cutting blade device 2 for cutting a grain stalk, a cutting grain stalk transporting device 3 for conveying a cut grain stalk backward, and the like, and a traveling device. 6, a vehicle body 9 is constituted by a threshing device 8 and the like having a threshing grain culm transport device 7, and the cutting device 5 is provided so as to be able to move up and down with respect to the vehicle body 9; In the combine, provided with a handling depth adjusting device 10 capable of taking over and transporting the harvested grain culm and adjusting the handling depth between the threshing grain culm transporting device 7 of the threshing device 8 and the cutting blade device 2 moves up and down independently of the reaper 5
The cutting blade stand 28 which is freely configured and supports the cutting blade device 2 has a ground.
Ultrasonic sensor 3 for detecting the distance between the surface and the cutting blade device 2
1, and cuts in relation to the detection result of the ultrasonic sensor 31.
If it is configured to keep the ground height of the blade device 2 constant,
Both, further, in relation to the detection result of the ultrasonic sensor 31
The handling depth adjusting device 10 is configured to be operated for adjustment.
A combine harvester.