JPH0210902Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, when the waste straw discharged from a combine harvester is collected by a collecting culm discharger installed at the rear of the machine, it is rotated downward and rotated toward the mown field to release the collected grain culm. The one that did this is published in Publication No. 14922 of 1972,
Many proposals were made in Japanese Patent Application Laid-open No. 53-33855 and Japanese Utility Model Application No. 56-5433.

However, since all of the above-mentioned known devices utilize the tension of the spring, the culm shedding body begins to rotate downward and laterally when the weight of the culm straw becomes greater than the tension of the spring. It starts to get wet, but
As this downward rotation and turning rotation proceed, the spring stretches and its tension gradually increases, and the straw collected by the downward rotation falls and the weight decreases, so at this time If the machine vibrates strongly, it may be pulled back by the spring even if only a portion of the waste straw is released, and even if the release operation progresses, if the amount of culm decreases, it will return to the culm receiving position without being released. In addition, since the culm ejection body is ejected while slowly turning, there is also the disadvantage that it is ejected in a long and widely spread state in the direction of movement of the aircraft.

The purpose of this invention is to improve the above-mentioned drawbacks, and the purpose of this invention is to support a culm collecting body in the rear part of the threshing device so that it can move up and down, so that the straw can be collected and released. In the combine harvester configured as above, the cut field side of the culm collecting body is supported so as to rotate around the vertical axis, and a guide roller attached to the cut field side from the supporting part is mounted inside the gutter-shaped guide curved plate. The vertical shaft 15 is brought into contact with the circumferential surface, and the vertical shaft 15 is interlocked with a prime mover that rotates in response to a detection signal from a culm collection detection sensor to forcibly rotate the culm collection discharge body horizontally;
The present invention is characterized in that the culm discharger is configured to discharge by pressing the guide roller against the guide curved plate.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on one side of a combine harvester machine having a traveling device, and has a pre-processing device 2 in front of it, and an operation panel 3 in order from the front on the other side of the machine. , a driver's seat 4, a grain tank 5, etc. are provided.

Reference numeral 6 denotes a straw shovel holding conveyor provided on the top plate 7 of the dust removal chamber extending from the culm opening of the threshing device 1 to the rear of the machine body, and an opening/closing plate 9 is provided at the rear end of the cover 8 covering the top surface of the straw holding device 6. The front part is rotatably attached.

Further, a guide plate 10 is provided below the straw clamping carrier 6 at the rear of the threshing device 1.
A support shaft 12a of a straw receiver 12 consisting of a plurality of receivers is rotatably supported on stays 11, 11 which are vertically provided on the rear lower surface of the vehicle.

Reference numeral 13 denotes a culm release body having a plurality of receiving rods 13a protruding from a rotating shaft 13b, and a vertical shaft 1 erected on a culm metal 14 into which the tip side of the rotating shaft 13b is loosely fitted.
5 is rotatably inserted into a vertical tube 17 integral with an arm 16 protruding from the rear of the threshing device 1.

Further, the arm 1 fixed to the upper part of the vertical shaft 15
8 is connected to a crank arm 20a rotated by a motor 20 via a link 19,
One end of the wire 21 is fixed to the arm 18, and the other end thereof is connected to an arm 22 protruding from the support shaft 12a of the straw receiver 12.

Then, the wire 21 near the arm 18 is passed through a ring 23 attached to the vertical tube 17, and
Since the ring 24 through which the a side is passed is attached to a tension spring 25 provided at the rear of the threshing device 1, the wire 21 is kept under tension.

Further, the base of an inverted L-shaped arm rod 27 having a guide roller 26 at the tip is fixed to the ear side end of the pivot shaft 13b, and the guide roller 26 slides into the rear wall 1a. A guide curved plate 28 having an arcuate cross section is attached, and an F-shaped stopper plate 29 is provided on the upper part of the guide curved plate 28 to protrude rearward.

Further, the front edge and the rear edge of the opening/closing plate 9 are formed into curled portions 9.
The retaining plate 31 of the sensing switch 30, which has a sensor bar 30a bent downward at the rear, is fitted into the curled portions 9a, 9a so that its movement can be adjusted. The length can be adjusted to the most suitable position.

In addition, when a cutter is interposed between the culm collecting body 13 and the rear surface of the threshing device 1, the front part of the guide plate 10 is used as a switching plate, and when the straw is not to be shredded, the switching plate is closed and the shredding is performed. It shall be opened when doing so.

In addition, as shown by the solid line in FIG. 3, a support member 32 connecting the front side end of the opening/closing plate 9 and the middle part of the side end of the guide plate 10 is provided with a support member 32 that closes the circuit of the motor 20 when the opening/closing plate 9 is opened, as shown by the solid line in FIG. A switch 33 is attached which opens the circuit when the plate 9 is closed as shown by the chain line.

In the above-mentioned apparatus, when the opening/closing plate 9 is opened and set to perform the reaping and threshing operation, the waste straw falls from the guide plate 10 onto the collecting culm discharger 13 and is collected.

At this time, since the return spring 36 is stretched between the arm 34 protruding from the pivot shaft 13b and the arm 35 protruding from the culm metal 14, the guide roller 26 is pressed against the guide curved plate 28. The bent portion of the arm rod 27 is slightly separated from the stopper plate 29, as shown by the solid line in FIG.

However, as the amount of culm collected increases, even if the return spring 36 has a force to return the culm collecting release body 13 to the culm receiving posture, it is not strong enough to counter the predetermined amount of culm collected, so that the arm rod 27 is bent. The culm collector plate 29 comes into contact with the stopper plate 29, and the culm collector 13 maintains a predetermined culm support attitude.

Then, when the sensor bar 30a is pushed by the collected waste straw and the sensing switch 30 detects a predetermined amount of collected straw and turns ON, the motor 20 starts and the crank arm 20a moves the link 19 and the arm 18. Since the vertical shaft 15 and the turning shaft 13b are turned through the vertical shaft 15 and the turning shaft 13b, the culm release body 13 turns around the vertical tube 17 toward the mown field side.

At that time, the bent part of the arm rod 27 is connected to the stopper plate 29.
However, the guide roller 26 is pressed against the guide curved plate 28 due to the fact that the collection culm release body 13 is pulled up by the tension of the return spring 36 and the rotating shaft 13b rapidly rotates. , In that state, the culm release body 13 rotates around the pivot shaft 13b.
As a result, the guide roller 26 is pressed against the curved surface of the guide curved plate 28 and rotates in the horizontal direction to the position shown by the chain line in FIGS. After discharging the waste straw onto the mown field, it turns back, during which time the return spring 36 is pulled up by the culm discharger 13 to return to the culm receiving position, and the motor 20 rotates once and stops.

The operating arm 18 of such a culm discharger 13
Along with the reciprocating rotation of the wire 21, the straw receiver 12 is rotated upward at the same time as the motor 20 is started, and the culm release body 13 moves 1/1/2 of the turning distance toward the mowed field side.
At the beginning of the turn at point 3, the wire 21 comes into contact with the rear end of the guide plate 10 to receive the discharged straw, and after that, the wire 21 follows the rotation of the arm 18 while stretching the tension spring 25. During the return turning stroke of the culm release body 13, the slack of the wire 21 is absorbed by the contraction of the tension spring 25 during the first 2/3 turn, and thereafter, that is, the culm release body 13
Since the straw receiving body 12 starts to rotate downward after the straw has turned 2/3 of the way back, the culm release body rotates from the ear side to the mowed field side, but the culm leakage occurs during this time. It never occurs.

Further, the pivot shaft 13 is provided with a joint 37 as shown in FIG. Loosely fit, pipe 3
A fan-shaped plate 40 having an arcuate long hole 39 erected at 8
and a plate 41 standing upright on the other divided part are superimposed, a bolt protruding from the plate 41 is inserted into the arcuate long hole 39, and then a wing nut 42 is screwed together. When working, set it as shown in the illustration, and when not working, set the wing nut 4.
2 is loosened, the culm collecting body 13 is rotated downward into a hanging position, and the wing nut 42 is tightened.

As described above, the present invention provides a combine harvester in which the culm collecting and releasing body 13 is vertically movably supported at the rear of the threshing device 1 so as to be in the posture of collecting and discharging the waste straw. The mowed field side of the body 13 is supported so as to rotate around the vertical axis 15, and a guide roller 26 attached to the mowed field side from the supporting portion is brought into contact with the inner circumferential surface of a gutter-shaped guide curved plate 28, The vertical shaft 15 is interlocked with a prime mover that rotates in response to a detection signal from a culm collection detection sensor to forcibly rotate the culm collection release body 13 horizontally, thereby pressing the guide roller 26 against the guide curved plate 28. Since the culm collecting body 13 is configured to release, when the collected culm amount detection sensor detects that a predetermined amount of culm has been collected, the prime mover forcibly releases the collecting culm releasing body 13 via the vertical shaft 15. The guide roller 26 is rotated toward the mowed field side, and as a result, the guide roller 26, which is located at a portion that protrudes from the support portion toward the mowed field side, rotates horizontally and is guided in pressure contact with the inner circumferential surface of the gutter-shaped guide curved plate 28, and the collected culm is released. The body 13 is forcibly rotated for discharge, and even when the remaining amount of waste straw is low, the collecting culm discharger 13 is reliably rotated downward to a predetermined discharge position, and the waste straw is kept in a well-organized state. Can be released into the field.

Furthermore, when the culm release body 13 forcibly turns toward the mown field, the guide roller 26 is pressed against the guide curved plate 28 and moves laterally, but the guide curved plate 28 is shaped like a gutter. Since the guide roller 26 is curved, it is smoothly guided in the lateral direction while allowing the guide roller 26 to roll, and thereby the culm-collecting and releasing body 13 can be operated for releasing without difficulty.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is a perspective view, Fig. 2 a is a perspective view of the main part, b is a sectional view of the joint of the pivot shaft, Fig. 3 is a side view of the main part, Fig. 4 is an operational view, and Fig. 5 is a A plan view of the control unit,
FIG. 6 is a side view of the same as above. 12... Straw receiver, 13... Culm release body, 15...
...Vertical axis, 20...Motor, 21...Wire,
25... tension spring, 26... guide roller, 28... guide curved plate.

Claims (1)

[Scope of utility model registration request] In a combine harvester configured such that a collecting culm releasing body 13 is vertically movably supported at the rear of the threshing device 1 so as to be in a posture for collecting waste straw and a posture for discharging straw, the mown field side of the said collecting culm releasing body 13 is is supported so as to rotate around the vertical shaft 15, and a guide roller 26 attached to the mowed field side from the supporting portion is brought into contact with the inner circumferential surface of the gutter-shaped guide curved plate 28, and the vertical shaft 15 is connected to the collecting culm. The collection culm release body 13 is forcibly rotated horizontally in conjunction with the rotating prime mover based on the detection signal of the amount detection sensor, and the guide roller 26 is pressed against the guide curved plate 28, so that the collection culm release body 13 is A culm collection device for a combine harvester, characterized in that it is configured to perform a discharge operation.