JPH0551248B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a threshing waste straw binding device that is installed in a mobile threshing machine such as a combine harvester. A bundling device body for bundling and discharging straw, and a stock end receiving plate for aligning the stock ends by contacting the stock ends of the waste straw supplied into the bundling device main body from the direction of the waste straw culm. This invention relates to a threshing straw binding device.

[Conventional technology]

Generally, a threshing straw binding device is equipped with a stock end receiving plate, but if this stock end receiving plate is installed in a fixed state, the stock ends of the threshing straw will be aligned regardless of the length of the grain culm. Difficult to tie in a tight state. In other words, with a combine harvester, the handling depth is adjusted to ensure good threshing even if the grain culm to be harvested has a long or short culm length. This is because the position of the stock end changes variously in the direction of the waste straw culm, making it difficult to make contact with the stock end receiving plate as expected.

Therefore, in the past, the stock end receiving plate itself was configured to be able to swing around the layer horizontal axis in the direction of conveying the waste straw, and the stock end receiving plate itself was swung by contact between the stock end receiving plate and the waste straw being conveyed. Due to the operating motion, the position of the working surface of the plant end receiving plate was changed along the culm direction based on the amount of rocking motion and the operating direction (for example,
(See Publication No. 50-75845).

[Problem to be solved by the invention]

With the conventional structure described above, it is difficult to make the stock end alignment effect by the stock end receiving plate very strong, and furthermore, the oscillation of the stock end receiving plate is affected by the stiffness of the removed straw itself being conveyed and the amount of removed straw. The amount of movement was easily affected, and it was difficult to adjust the position of the stock end with high precision.

In addition, since the position of the stock end receiving plate cannot be adjusted until after the waste straw itself has oscillated the stock end receiving plate, the position of the stock end receiving plate cannot be adjusted until the end of the position adjustment operation. If the straw has already reached the position where the stock end receiving plate is present, there is a delay in response and it is not possible to perform the stock end alignment operation in an appropriate state.

Furthermore, with this conventional method, it is not possible to distinguish between the state in which waste straw is not being conveyed and supplied, and the state in which it is not in contact with the stock end receiving plate even if it is being supplied, so it is difficult to distinguish between the state in which waste straw is not being conveyed and supplied, and the state in which it is not in contact with the stock end receiving plate. When the supply of waste straw is interrupted, the position of the stock end receiving plate is adjusted to one end of the position adjustment range, which also tends to cause a delay in response.

The purpose of the present invention is to accurately detect the position of the stock end without being affected by the properties and quantity of the waste straw that is supplied, and to reduce the response delay of the stock end receiving plate both at the start of work and during work. It is intended to enable the position adjustment operation, and also to avoid the hunting phenomenon caused by the overly sensitive operation of the mechanism that adjusts the position of the stock end receiving plate, and to perform the adjustment operation smoothly. It is to make it.

[Means to solve the problem]

The technical means of the present invention to achieve the above object includes a tying device main body for tying and releasing the waste straw sent out from a threshing device in a horizontal position, and a stock of the waste straw supplied into the tying device main body. A threshing straw binding device, which is equipped with a stock end receiving plate for aligning the stock ends by contacting the waste straw from the culm direction, is equipped with the configurations described in [A] to [C] below. That's true.

[B] The binding device main body includes a presence/absence detection means for detecting whether waste straw has been supplied into the waste straw supply path, and a stock sensor for detecting the stock end of the supplied waste straw. .

[B] The stock end sensor includes a pair of detectors arranged in parallel at a predetermined interval in the direction of the waste straw culm at a position corresponding to the stock end of the supplied and waste straw, and It is provided integrally with the stock end receiving plate at a position on the upper side in the transport direction of the stock alignment action position of the plate.

[C] The stock end receiving plate moves the stock end so that the stock end is located within the predetermined interval in conjunction with the detection result of the stock head sensor in a state where the presence/absence detecting means detects the presence of waste straw. It is provided with a moving mechanism for moving the end receiving plate and is configured to be movable in the direction of the waste straw culm.

[Effect]

The effects of taking the above technical measures are as follows.

The stock end position is not detected by the movement of the stock end receiving plate itself, but the working surface of the stock end receiving plate acts only for stock alignment, and the stock end position is detected by the stock end sensor.

The position of the stock end is detected before the waste straw is subjected to the stock alignment action by the stock end receiving plate, so the change in the stock end position is recognized before the stock arrangement action starts, and the stock end receiving plate is activated. The working position can be adjusted in advance.

It is equipped with a presence/absence detection means that determines whether or not waste straw is being supplied, and the position of the stock end is detected by the stock head sensor when the presence of waste straw is detected, so that it can be used immediately after the start of work or after work is interrupted. Unnecessary position adjustment of the stock end receiving plate can be avoided.

The stock sensor is equipped with a pair of detectors separated by a predetermined distance in the direction of the waste straw culm.
The position adjustment operation of the stock end receiving plate within the range corresponding to the predetermined interval can be omitted.

In addition, the predetermined interval between the pair of detectors is such that when the position of the stock end receiving plate is adjusted, the stock sensor moves in unison with the stock end receiving plate, so even though the predetermined interval is provided, it is relatively Stock ends can be detected with high accuracy at small intervals, and the number of detectors used can be reduced despite the wide stock end detection range.

In other words, in order to detect over a wide range the position of the plant end, which changes variously depending on the handling depth adjustment, using a plant sensor that is fixed in position relative to the machine, it is necessary to Either a large number of detectors must be installed, or the distance between a pair of detectors must be made extremely large. In the former case, the number of detectors used increases, and in the latter case, it is difficult to accurately detect stock ends. Although it is difficult to do this, in the present invention, the stock end sensor also moves together with the stock end receiving plate, so the stock end sensor with a pair of detectors arranged at a small interval can be used to detect stock ends over a wide range. can be detected with high accuracy.

〔Effect of the invention〕

(b) Due to the above action, the position of the stock end can be detected with high accuracy without being affected by the stiffness of the supplied waste straw or the amount of waste straw, and the original position of the stock end receiving plate can be detected. It is easy to accurately adjust the position while exhibiting a good stock alignment effect.

(b) From the above actions, the detection of the stock end position is performed before receiving the stock alignment action by the stock end receiving plate of the waste straw, so it is recognized that the stock end position has changed before the stock arrangement action starts. As a result, the action position of the stock end receiving plate can be adjusted before the waste straw reaches the stock alignment action position, thereby avoiding deterioration of stock end arrangement performance due to a delay in the response of adjusting the position of the stock end receiving plate, and improving the performance. It can demonstrate a stock arrangement function.

(c) Due to the above-mentioned effects, it is possible to avoid unnecessary position adjustment operations of the stock end receiving plate immediately after the start of work or after work is interrupted, and it is possible to avoid response delays of the stock end receiving plate due to such unnecessary adjustment actions. In this respect as well, it is possible to demonstrate a good stock alignment function.

(d) From the above effects, although the position adjustment operation of the stock end receiving plate itself can be performed quickly and with good response as described in (b) above, it is possible to limit the frequency of occurrence of the adjustment operation itself to only the necessary range. This makes it possible to suppress the hunting phenomenon caused by hypersensitive movement and improve the durability of the entire device.

(e) Due to the synergistic effects of the above, the position adjustment of the stock end receiving plate can be operated with less delay in response, both during work, immediately after work starts, and immediately after work is interrupted.
In addition, waste due to the sensitive movement of the stock end receiving plate can be eliminated, so that an even better stock alignment function can be exhibited as a whole.

(f) Due to the above-mentioned effects, it is possible to accurately detect stock ends at relatively small intervals while providing a predetermined interval for suppressing hunting, and the detector is used even though it is possible to set a wide range for detecting stock ends. The number of pieces can also be small.

〔Example〕

Hereinafter, an embodiment of the present invention will be described based on the drawings. The straw removal chain conveys the waste straw sent out from the threshing device 1 in a sideways posture toward the rear in the machine traveling direction, backward and diagonally toward the ear tip side. This is a threshing waste straw binding device that is installed in series with the waste straw chain 2 of a combine harvester, which is provided with a guide plate 3 that swings and guides the waste straw from the waste straw chain 2 diagonally downward, and A binding device main body 4 that binds and discharges waste straw sent along the guide surface 3A of the board 3;
The binding device main body 4 is provided with a stock end receiving plate 5 for receiving the stock end of the waste straw supplied from the direction of the waste straw culm.

The stock end receiving plate 5 is attached to the binding device main body 4, and the binding device main body 4 is configured to be movable in the direction of the removed straw culm relative to the threshing device 1, that is, the removed straw conveying chain 2.

Then, in the waste straw supply path A to the binding device main body 4, there is a position P 1 which is separated by a small distance l ₁ on the side where the waste straw is present from a position P corresponding to the stock end receiving plate ₅ , and a position corresponding to the stock end receiving plate. Whether or not the stock end of the supply and waste straw is located within a range L between P and a position _P2 which is separated by an appropriate distance _l2 larger than the small distance _l1 on the side where the waste straw is not present. In addition to providing a stock sensor 6 that detects whether
A moving mechanism 7 is provided which moves the stock end receiving plate 5 in the direction of the waste straw culm so that the stock end is located within the range L in conjunction with the detection result of the stock head sensor 6.

The stock sensor 6 is attached to the front half 5A of the stock end receiving plate 5 that protrudes into the waste straw supply path A, and has two contacts capable of contacting the supplied waste straw as a detector of the stock end position. The contacts 6a, 6a' are arranged at appropriate intervals in the direction of the culm of the waste straw, and one contact 6a on the tip side in the direction of the culm of the waste straw contacts, and the other contact 6a' It is configured to detect that the end of the waste straw stock is located at a position corresponding to the stock end receiving plate 5 when the ends of the waste straw stock do not come into contact with each other.

The moving mechanism 7 is provided between the binding device main body 4 and a fixed frame 8 to which it is movably attached, and rotates forward and backward to move the binding device main body 4 along the straw removal culm direction with respect to the fixed frame 8. A screw shaft 7A for reciprocating is installed, and based on the detection result of the stock sensor 6, one contact 6a of the stock sensor 6 is in contact and the other contact is not. , a motor 7B is provided which rotates the screw shaft 7A in forward and reverse directions so as to maintain it within a predetermined interval corresponding to the range L. This motor 7B includes a starting sensor 7C, which is a presence/absence detection means that detects the presence or absence of the supply and waste straw and starts automatic operation based on the detection result of the sensor 6 of the 7B, and a stock end receiving plate 5. The operation is controlled by providing a pair of switches 7D and 7D' that detect the position at both ends of the moving path and disable the operation of the motor 7B that moves the stock end receiving plate 5 further. has been done.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view, FIG. 2 is a partially cutaway plan view, and FIG. 3 is a cross-sectional front view. 1... Threshing device, 4... Binding device body, 5...
Stock end receiving plate, A...Discharged straw supply path, 6...Stock source sensor, 6a, 6a'...detector, 7...Movement mechanism,
7C...existence detection means, L...predetermined interval.

Claims (1)

[Scope of Claims] 1. A binding device main body 4 that binds and discharges waste straw sent out from the threshing device 1 in a sideways posture, and a binding device main body 4 that binds and discharges waste straw that is sent out from the threshing device 1 in a sideways posture, and a binding device main body 4 that binds and discharges waste straw that is sent out from the threshing device 1 in a sideways posture. In addition to being provided with a stock end receiving plate 5 for aligning the plant ends by contacting from the culm direction, the following [A] ~
A threshing straw binding device having the configuration described in [C]. [B] The binding device main body 4 includes a presence/absence detection means 7C for detecting that waste straw has been supplied into the waste straw supply path A, and a stock sensor 6 for detecting the stock end of the supplied waste straw. It is equipped with [B] The stock head sensor 6 includes a pair of detectors 6a arranged in parallel at a predetermined interval L in the direction of the waste straw culm at a position corresponding to the stock end of the supplied and discharged straw;
6a', and is provided integrally with the stock end receiving plate 5 at a position on the upper side in the transport direction of the stock alignment action position of the stock end receiving plate 5. [C] The stock end receiving plate 5 is connected to the presence/absence detecting means 7.
A moving mechanism 7 that moves the stock end receiving plate 5 so that the stock end is located within the predetermined interval L in conjunction with the detection result of the stock origin sensor 6 in a state where the presence of waste straw is detected at C. It is configured to be movable in the direction of the straw removal culm.