JPH0513151Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a chaff sheave in which a plurality of strip-like lips are arranged side by side in the direction of transporting the processed material in an upwardly inclined position.

[Conventional technology]

In this type of chaff sheave, the cut straw in the threshing product assumes a posture along the longitudinal direction of the lip while it is being oscillated and transferred, and this posture is adopted to prevent it from falling through the gap between the lips. A fall prevention member that receives the cut straw and transports it over the lip is provided along the direction of transport of the processed material.

[Problem that the invention attempts to solve]

However, even though the above-mentioned measures are taken to prevent the straw from falling, the straw that is placed vertically along the slope of the lip easily falls down through the gaps between the lips. It was true.

In view of these circumstances, the present invention aims to improve the sorting accuracy by effectively preventing cut straw in a vertical position from falling through the gap between the lips.

[Means for solving problems]

The characteristic structure of the present invention to achieve the above object is that in a chaff sheave in which a plurality of strip-shaped lips are arranged side by side in the direction of transfer of the processed material in an upwardly inclined position, the upper and lower intermediate portions of the lips are inclined upwardly in the front. The lower end of the lip is bent forward and upward to form a lower side, and the lower side and the step are arranged to face each other. There is a certain point, and its action/effect is as follows.

[Effect]

In other words, as shown in FIG. 1, the lower end of the cut straw that is in a vertical position and tries to fall through the gap between the lips 18 is the edge of the lip 1 located in front of the gap.
It is temporarily blocked at the rear part of the stepped portion 18a of No.8,
At the same time as the chaf sheave 15 swings rearward, it is sent vigorously upward and rearward. Further, the lower end of the cut straw that has entered the gap deeper than the stepped portion 18a is caught by the lower side portion 18b located on the rear side and is prevented from falling, and as described above, simultaneously with the backward swinging of the chaff sheave 15. It is sent upward and backward. Furthermore, even if the grains stay on the lower side 18b and try to jump upward and rearward as the chaff sheave 15 swings, they are stopped by the stepped portion 18a of the lip 18 having the lower side 18b and are prevented from moving downward. This encourages the fall of the people.

[Effect of idea]

Therefore, according to the present invention, it has become possible to increase the feeding capacity of the chaf sheave and to effectively prevent cut straw in a vertical position from falling off, and it has become possible to expect an improvement in sorting accuracy.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 2 shows a full-culm input type combine harvester equipped with a pre-harvest treatment section A, a threshing section B, and a sorting section C.

The threshing section B includes a handling drum 2 horizontally suspended in a handling room 1.
A concave 3 is provided on the lower side, a grain culm supply port 4 is provided at the front of the handling chamber 1, and a pair of left and right processed material discharge ports 5 are formed on both sides in the direction of the rotation axis of the handling cylinder at the rear. There is. Then, the grain culm supplied from the grain culm supply port 4 is threshed in the handling section on the lower side of the handling cylinder 2, and is caused to flow along the peripheral wall of the handling chamber by the rotating handling cylinder 2, and at the same time, it rotates once. Then, the flow is divided and guided to the left and right treated material discharge ports 5.

The sorting section C includes a grain pan 6 that sorts the processed material leaking through the concave 3 based on the difference in specific gravity and then oscillates and transfers the processed material to the rear, and a grain pan 6 that oscillates and transfers the processed material discharged from the processed material discharge port 5 to the rear. It is composed of a straw walker 7 that is oscillated and transferred, and an oscillating sorting device 8 that sorts the processed materials sent from the grain pan 6 and the straw walker 7. In front of the oscillating sorting device 8, there is a winnowing machine 9 for sending sorting air to the oscillating sorting device 8, and below there is a collecting section 10 for collecting the first and second sorted items. It is provided.

Furthermore, a tipper 11 is mounted on a shaft below the rear of the straw walker 7, and the straw walker 7
The processed material discharged from the machine is shredded in cooperation with a fixed blade 12 and discharged to the outside of the machine. 1 in the diagram
Reference numeral 3 denotes a shutter that switches between a state in which the processed material discharged from the straw walker 7 is directly discharged to the outside of the machine and a state in which it is supplied to the chopper 11.

The swinging sorting device 8 has a chaff sheave 15 and a grain sheave 1 between a pair of left and right swinging sorting plates 14.
6 and the first distribution lower plate 17 are arranged in three stages, upper and lower, and they swing integrally together with the swinging sorting board.

As shown in FIG. 1, the chaff sheave 15 has a plurality of strip-shaped lips 18 arranged at predetermined intervals in the back-upward tilting position, in the front-rear direction, that is, in the direction of transporting the processed material, and has feed teeth on the upper side. It is constructed by attaching several fall prevention plates 19 to the lip 18 in a crosswise manner, and swings the threshed material from the upper part to the rear while filtering it. The lip 18 has a stepped portion 18a formed at the upper and lower intermediate portions over the entire length of the lip, and the lower side 1
8b is bent forward and upward. In other words, the upper and lower intermediate portions of the lip 18 are connected to the stepped portion 1 that slopes upward toward the front.
8a, and the lower end of the lip 18 is bent forward and upward to form a lower side portion 18b, and the lower side portion 18b and the stepped portion 18a are arranged opposite to each other. It is configured. Therefore, even if the cut straw mixed in the threshed material takes a posture along the longitudinal direction of the lip 18 while being oscillated and transferred, it will be caught by the fall prevention member 19 and prevented from falling through the gap. Further, even when it is in the vertical position, its lower end is caught by the stepped portion 18a of the lip 18 on the front side of the gap and is prevented from falling off.

Further, when the cut straw enters deeply, it is caught by the lower side portion 18b and prevented from falling off. The cut straw received by the stepped portion 18a and the lower side portion 18b is vigorously discharged backward and upward by the rear swinging of the swinging sorting device 8. When grains are stuck on the lower side, the grains try to jump upward and rearward with the rear swing of the swinging sorting device 8, but are blocked by the stepped portion 18a of the same lip 18. It falls into Glensieve 16 below.

Incidentally, although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the chaff sheave according to the present invention, with FIG. 1 being an enlarged longitudinal side view, and FIG. 2 being an overall longitudinal side view of the combine harvester. 18...Rip, 18a...Step, 18b...
...Lower part.

Claims (1)

[Scope of utility model registration request] It is a chaf sheave in which a plurality of strip-like lips 18 are arranged side by side in the direction of transfer of the processed material in an upwardly inclined rearward posture, and the upper and lower middle portions of the lips 18 have a crank shape with a stepped portion 18a that is inclined upwardly in the front. and a lower end portion of the lip 18 is bent forward and upward to form a lower side portion 18b, and the lower side portion 18b and the stepped portion 18a are arranged opposite to each other. .