JPH0582166B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for tying waste straw that is equipped with an automatic tying position adjustment mechanism.

[Conventional technology]

The automatic bundling position adjustment mechanism used in the waste straw binding processing structure detects the position of the stock end of the waste straw supplied from a threshing device, etc., and adjusts the bundling position to be within a certain range from the stock end. There is a structure in which the binding device is automatically driven and laterally displaced (see Japanese Patent Application Laid-open No. 80863/1983).

[Problem that the invention seeks to solve]

However, with the above-configured automatic bundling position adjustment mechanism, the bundling will be done at a position within a certain range from the base end of the plant regardless of the culm length of the waste straw, and if the waste straw is long or short, it will be tied at an unbalanced position. Resulting in. That is, in the case of waste straw with a long culm length, the bundling position as a whole tended to be too close to the plant end, and in the case of short waste straw, the binding position tended to be too close to the tip side.

In view of these circumstances, the present invention aims to enable waste straw to be bundled at well-balanced locations, regardless of the length of the waste straw.

[Means for solving problems]

The characteristic configuration of the present invention for achieving the above object is to detect the base end of the waste straw stock that is driven and moved in the culm direction following the positional fluctuation of the stock base end of the waste straw conveyed by the feed chain. A sensor is provided, and the amount of lateral transfer of waste straw by a waste straw conveying device that conveys the waste straw inherited from the feed chain to the bundling device is automatically changed according to the amount of movement of the sensor, and the bundling of the bundling device is performed. The amount of lateral transfer of waste straw relative to the amount of movement of the sensor is set so that the farther the sensor is from the tip side, the longer the distance from the base of the plant to the bundling position and the distance from the tip of the plant to the bundling position, respectively. The present invention is characterized in that the stock alignment plate for aligning the stock ends of the bundled waste straw is configured to be driven and moved in the direction of the culm in accordance with the positional change of the sensor, and its functions and effects are as follows.

[Effect]

In other words, according to the above configuration, it is assumed that the tip position of the waste straw conveyed by the feed chain is always at a constant position, and the longer the culm length of the waste straw, the more the stock origin is transferred to the feed chain. It will protrude outward from. Therefore, the sensor follows the stock end and moves toward the stock end, and according to the amount of movement, the amount of lateral transfer toward the tip side when conveying waste straw to the bundling device automatically increases. The distance from the base end to the binding position and the distance from the tip to the binding position each become longer. Furthermore, as the sensor moves, the stock alignment plate is also driven and moved in the direction of the culm, so the stock alignment plate can be operated at the appropriate position for the stem end of the straw that is not fixed at the bundling position. You will be able to align the stock end.

〔Effect of the invention〕

Therefore, according to the present invention, by utilizing the fact that the tip position of the waste straw conveyed by the feed chain is constant, even if the waste straw is long or short, it can be removed from the base end of the stock. Since the ratio of the distance to the binding position and the distance from the tip of the ear to the binding position can be kept within a certain range, it has become possible to bind in a well-balanced manner at a position that corresponds to the culm length.

In addition, since the stock end alignment plate can be operated at an appropriate position, the stock end can be properly aligned. Moreover, since the binding position is changed by fixing the heavy binding device body and adjusting the amount of lateral transfer depending on the waste straw conveyance position, the member whose position is adjusted is lightweight, and it is difficult to drive it. The actuator can be implemented with a small output and low cost.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figures 1 to 4 show the threshing section and waste straw processing section mounted on the combine harvester, and the threshing waste straw carried out from the handling room 2 with the ears aligned is placed at the rear of the threshing device 1 in a horizontal position at the rear of the machine. A waste straw conveying device 4 for diagonally conveying the waste straw to the bundling device 3 is provided, and a disk-shaped waste straw cutter 5 for shredding the waste straw discharged from the waste straw conveying device 4 is provided below the conveyance path;
A pair of auxiliary transport devices 6 are provided for vertically transporting and guiding the binding device 3.

As shown in FIG. 5, the waste straw conveying device 4
It is composed of a straw removal conveyor chain 4a wound from near the end of the feed chain 30 to near the bundling device 3, and a straw removal rail 7 that is provided along the feed path below the chain and is movable in and out. They work together to pinch and convey the waste straw, and by expanding and contracting the waste straw rail 7, the discharge position of the waste straw can be changed. and,
Since the waste straw rail 7 is provided so as to convey the waste straw diagonally, depending on the discharge position, that is,
Depending on the amount of movement of the straw removal rail 7, the amount of lateral transfer of the removal straw in the culm direction is changed.

The bundling device 3 is of a well-known structure having a pucker 8, a needle 9, etc., and a part on the stock end side of the bundling device 3 is provided with a stock tying device that taps the stock ends of the waste straw that have been raked in by the pucker 8 to align them. Displaced straw stock base end detection sensors S ₁ and S ₂ are provided which are driven and moved in the direction of the culm following the positional changes of the original alignment plate 14 and the stock base end of the discarded straw.

Next, the driving structure of the stock alignment plate 14 and the waste straw stock end detection sensors S ₁ and S ₂ will be explained.

As shown in FIG. 3, a strip-shaped frame 13 is pivotally supported on a vertical shaft 12 whose upper end is fixed to the fuselage fixing part,
A boss portion 13a formed at the free end of the frame 13
The shaft 14a of the stock alignment plate 14 is rotatably fitted into the shaft 14a, and the first small link 15 is fixed to the shaft 14a, and the tip of the first small link 15 is connected to the second small link 16 which is pivotally supported on the vertical shaft 12. 17 has been erected. in short,
The frame 13, the first small link 15, the second small link 16, and the rod 17 constitute a four-link mechanism. A crank mechanism 19 interlocked with the drive shaft 18 of the binding device 3 and the second small link 1
6, the binding device 3 and the crank mechanism 1
9, the first small link 15 and the second small link 16 swing simultaneously, and the stock alignment plate 14 swings integrally with the second small link 16 and is tied together. It is now possible to strike the base end of the waste straw to align it. Moreover, the axis 1 of the stock alignment plate 14
Sensor support stay 10 facing forward at 4a
A first projecting piece 20 is rotatably fitted onto the boss portion 10a attached to the boss portion 10a and is fixed to the lower end of the boss portion 10a.
A sensor link 22 is constructed between the first and second small links 15 and 16, the sensor link 22, and the frame 13 to form a parallel quadruple link mechanism. has been configured. Furthermore, a motor M is attached to a fixed part on the side of the machine body located on the stock side, and a screw shaft 25 is connected to the output shaft 23 of the motor M via a joint 24, and its tip is connected to the middle part of the frame 13. It is screwed into a pivotally supported boss portion 13b.

Therefore, when the motor M is driven, the screwing position of the boss portion 13b shifts along the screw shaft 25, and at the same time, the frame 13 swings around the vertical shaft 12, and accordingly, the shaft 14a of the stock alignment plate 14 is displaced. While moving in an arc along the culm direction of the straw, the sensor support stay 10 moves parallel to the culm direction while maintaining its posture.

A support plate 2 is provided at the front end of the sensor support stay 10.
6 and two first and second sensors S ₁ and S ₂ for detecting the stock end of the waste straw from the support plate 26.
It is possible to touch the stock side of the waste straw that is being conveyed by hanging down. Further, the control unit A can drive the motor M based on the detection signals from the first and second sensors S ₁ and S ₂ and the activation sensor S ₃ located on the upper side of the straw removal path. It's like this. In other words, after a certain period of time from the time when the activation sensor S ₃ comes into contact with the waste straw while the waste straw is being conveyed,
In other words, a delay time is set in the activation system so that the controller A is activated when the waste straw reaches a position where it acts on the first and second sensors S ₁ and S ₂ .

As shown in FIG. 5, the straw removal rail 7 is composed of a fixed rail 7a and a movable rail 7b that is removably inserted into the fixed rail 7a, and one end of the inner wire _W1 is connected to the tip of the movable rail 7b. The other end of the inner wire _W1 is fixed to the base end of the inner wire W1, and each wire is wound around the vehicle body 27, which is pivotally supported at the tip of the fixed rail 7b, in a crossed manner. And fixed rail 7
The inner wire W ₁ is passed through a pair of outer wires W ₁ and W ₂ connected between the support part 28 of a and the side part on the stock side of the rear part of the fuselage, and the middle part thereof is connected to the rear of the binding device 3. It is wound around a shaft-supported vehicle body 29. Furthermore, the free end of the frame 13 is fixed to the front part of the inner wire _W1 , and the frame 1
3 swings, the inner wire _W1 is pushed or pulled, the movable rail 7b moves in and out of the fixed rail 7a, and the straw removal rail 7 expands and contracts.

Next, to explain the operation of the automatic bundling position adjustment mechanism, when the culm of the waste straw is long, the amount of stock coming out from the waste straw conveying chain 4a becomes longer, so that the first and second sensors S ₁ and _S2 both contact the waste straw and turn on, sending the signal to the control section A.
Upon receiving this signal, the control unit A drives the motor M to swing the frame 13 toward the stock side, and moves the sensor support stay 10 together with the first and second sensors S ₁ and S ₂ toward the stock side. . Then, as the frame 13 swings toward the stock side, the shaft 14 of the stock alignment plate 14
As the movable rail 7b moves toward the stock end, the movable rail 7b contracts, and the discharge of waste straw is accelerated and the amount of lateral movement is reduced.

Next, when the culm of the waste straw is short, the length of the removal from the waste straw conveying chain 4a is shortened, and therefore,
Both the first and second sensors S ₁ and S ₂ do not come into contact with the waste straw and are turned OFF, so that no signal is transmitted to the control unit A.
At this time, the control unit A drives the motor M in the reverse direction to swing the frame 13 toward the tip side, and moves the sensor support stay 10 together with the first and second sensors S ₁ and S ₂ toward the tip side. Then, as the frame 13 swings toward the tip side, the shaft 14a of the stock alignment plate 14 moves toward the tip side, and the movable rail 7b extends, slowing down the discharge of waste straw and increasing the amount of lateral transfer. do.
The motor M is driven by the first sensor _S1 .
At the position where it is ON and the second sensor S ₂ is OFF,
That is, the stock end is the first sensor S ₁ and the second sensor S ₂
The sensor support stay 10 is configured to stop when it reaches a position between , and performs feedback control in which the sensor support stay 10 moves according to the culm.

As described above, in the waste straw bundling processing structure of this embodiment, it is assumed that the tip position of the waste straw is aligned by the handling depth adjusting means when it is introduced into the handling chamber 2, and the stock head position is The structure is configured such that the culm body is determined by the detection of the culm, and the amount of lateral transfer of the waste straw in the direction of the culm by the waste straw conveying device 4 can be changed accordingly by adjusting the discharge position from the device 4. As a result, when tying waste straw, the ratio of the distance l ₁ from the base of the stock to the tying position and the distance l ₂ from the tip of the stalk to the tying position is always within a certain range. -ing In addition, in order to efficiently align the stock ends, the stock alignment plate 1 is installed according to the position of the stock ends of the waste straw to be bundled.
4's stock striking position is also shifting.

Incidentally, in carrying out the present invention, other means for changing the lateral transfer amount of waste straw, such as the waste straw conveying device 4, may be used.
Means for changing the inclination angle may be used.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the waste straw bundling processing apparatus according to the present invention, in which Fig. 1 is a plan view, Fig. 2 is a side view, and Fig. 3 is a longitudinal sectional side view showing the drive structure of the stock alignment plate.
FIG. 4 is a rear view, and FIG. 5 is a longitudinal sectional side view of the straw removal conveying device. 3... Binding device, 4... Straw waste conveyance device, 14
...Stock stock alignment board, 30...Feed chain, l ₁
... Distance from the stock end to the bundling position, l ₂ ... Distance from the tip of the stalk to the bundling position, S ₁ , S ₂ ... Discarded straw stock stock end detection sensor.

Claims (1)

[Claims] 1. Discarded straw stock end detection sensors S ₁ and S ₂ are provided which are driven and moved in the culm direction following the positional fluctuation of the stock end of the waste straw transported by the feed chain 30, and The amount of lateral transfer of waste straw by the waste straw transfer device 4, which conveys the waste straw inherited from the chain 30 to the bundling device 3, is automatically changed according to the movement amount of the sensors S ₁ and S ₂ , and the waste straw is transferred to the bundling device 3. The sensors S ₁ and S 2 are set so that the farther the sensors S 1 and S ₂ are from the tip side, the longer the distance l ₁ from the base of the stock to the binding position and the longer the distance l ₂ from the tip of the ear to the binding position, _respectively . The amount of horizontal transfer of the waste straw is set relative to the amount of movement of S ₂ , and the stock alignment plate 14 for aligning the stock ends of the bundled waste straw is driven in the direction of the culm according to the positional fluctuations of the sensors S ₁ and S ₂ . A waste straw bundling processing structure configured to be moved.