JPH0574324B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure of a sorting section of a threshing machine mounted on a combine harvester, a harvester, or the like.

[Conventional technology]

As disclosed in Japanese Utility Model Application Publication No. 131848/1983, one of the structures of the sorting section of such a threshing machine includes a pre-sorting section for sorting leakage material leaked through the receiving net of the handling room; There was one that was equipped with a separate post-sorting section for sorting out non-leakable materials that had fallen from the dust inlet at the rear of the handling room, and configured so that they could be independently oscillated.

[Problem that the invention seeks to solve]

By the way, in the front sorting section and the rear sorting section in the sorting section structure having the above-described configuration, one end thereof is linked to the eccentric cam mechanism, and the other end is pivotally connected to the lower end of the swinging link. Therefore, when the filter is oscillated, it includes a vertical movement component, generally a vertical movement component, with respect to the filtration and sorting surface in addition to a horizontal movement component back and forth. Since the vertically moving component contained in the pre-sorting section makes the material move while being oscillated and transferred through the sorting sieve, the cut straw in the material becomes vertical and sticks to the sorting sieve, obstructing the feeding of the material. This causes inconveniences such as the grains passing through the gaps and getting mixed in with the paddy into the collecting section, resulting in a decrease in sorting accuracy. In particular, when the amount of the processed material was small, the movement of the processed material became more violent, and there was a tendency for the stickiness and contamination of cut straw to increase.

Taking these points into consideration, the present invention aims to improve the sorting accuracy by suppressing the vertical movement component contained in the pre-sorting section, thereby eliminating various inconveniences caused by it. .

[Means for solving problems]

The characteristic configuration of the present invention is that there is a pre-sorting section that sorts out leaked matter that has leaked through the receiving net of the handling room, and a rear sorting section that sorts out the non-leaked matter that has fallen from the dust inlet at the rear of the handling room. and a sorting section, the front sorting section is driven back and forth in a straight line along its filtration sorting surface, and the rear sorting section is oscillatedly driven, and its functions and effects are as follows. It is.

[Effect]

In other words, the sorting section is divided into a front sorting section and a rear sorting section, and the front sorting section, which is equipped with a sorting sieve, is driven back and forth in a straight line along the filtration and sorting surface. To eliminate vertically moving components and to silently transfer the processed material on the sieve without moving while being filtered and sorted.
On the other hand, in the post-sorting section, where there is a lot of straw and requires a scrubbing action, by shaking it in the conventional manner, the material to be processed is sufficiently sprung, and the material is effectively filtered and sorted while being transferred to the rear.

〔Effect of the invention〕

As a result, it is less likely that cut straw contained in the material on the sorting sieve will get stuck in the sorting sieve and obstruct the feeding of the material, or fall off and get mixed into the collection section, improving sorting accuracy.

〔Example〕

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

Fig. 2 shows a threshing machine mounted on a combine harvester, in which a handling drum 2 is mounted on a shaft in a handling chamber 1, a receiving net 3 is stretched below this handling drum 2, and the ears are placed inside the handling chamber 1. A feed chain 4 for holding and conveying the grain rod stock along the rotational axis of the handling cylinder while inserted into the feed chain 4, and a feed chain 4 for holding and conveying the grain rod stock along the rotational axis of the handling cylinder, and a A sorting section A is provided to sort out fallen objects.

The sorting section A includes a swinging sorting device 6 that sorts the materials to be processed from the handling room 1, a sorting fan 7 that sends sorting air to the swinging sorting device 6 from the front, and a sorting fan 7 that collects the sorted items. The first item collecting section 8 is configured to collect the first item, and the second item collecting unit 9 is to collect the second item.

The oscillating sorting device 6 includes a pre-sorting section 6A that sorts out leaked matter that has leaked through the receiving net of the handling room 1;
A separate post-sorting section 6B is provided for loosening and sorting non-leakable materials that have fallen from the dust inlet 5 at the rear of the handling room.
Each of them is configured to be able to be driven separately.

Next, the structure of these front and rear sorting sections 6A and 6B will be explained.

The front sorting section 6A is provided with a grain pan 11 extending over a pair of left and right front swinging sorting plates 10A, and behind the grain pan 11 is provided with a chaff sheave 12 and grain sheave 13 in two stages, upper and lower, and a small grain pan 14 is provided above the chaf sheave 12. It is configured so that it is placed in a forward downward position. With this configuration, leakage matter that has leaked through the front two-thirds of the receiving net 3 can be removed from the grain pan 11.
The leaked material that was directly caught by the small grain pan 14 and leaked through the rear third of the
After being caught above and sent forward, it falls onto the grain pan 11 and is released. And Glenpan 1
The processed material received by the chaff sieve 1 is sorted by specific gravity and then transferred to the rear chaff sieve 12, where it is filtered and sorted by the chaff sieve 12 and then transferred to the rear.

The filtrate filtered by the chaff sieve 12 is received on the front side of the green sieve 13,
Further, non-filtered matter discharged from the rear end of the chaff sieve 12 is received at the rear side of the grain sieve 13, and is simultaneously filtered and sorted, and transported rearward by the sorting air and discharged. Glensieve 13
Most of the filtered material is paddy, which is collected as the first product in the first product collection section 8, and the non-filtered material discharged from the rear end is mainly paddy with branches. The second item collection unit 9 collects the second item as the second item.

The rear sorting section 6B includes the front swing sorting plate 10.
A pair of left and right rear swinging sorting plates 10B are arranged in a state that they overlap when viewed from the side, and two upper and lower stroke racks 17 and 18 are provided over the rear swinging sorting plates 10B. The upper stroke rack 17 is disposed below the dust inlet 5 of the handling room 1, and filters and sorts non-leakage materials discharged from the dust inlet 5, and swings them rearward to remove them. Release from the end. Then, the upper stroke rack 1
The filtrate filtered in the filter 7 is once received by the feed plate 17a provided at the lower end and then discharged to the second material collection section 9, and the non-filtered material is discharged from the rear end of the upper stroke rack 17. falls onto the lower stroke rack 18. Lower stroke rack 1
8 swings and transfers the non-filtered matter that has fallen from the upper stroke rack 17 to the rear while being filtered and sorted again. The filtered material from the lower stroke rack 18 slides down on the second flow down plate 19 and is collected in the second material collection section 9, and the non-filtered material that has been swung rearward is collected at the rear end. is ejected from the aircraft. In addition, the second screw 20 provided in the second item collection section 9
A processing tooth (not shown) and a receiving tooth (not shown) that act in cooperation with the processing tooth (not shown) are interposed in the intermediate part of the processing material. Then reduce to Glenpan 11.

Next, the driving structure of the front sorting section 6A and the rear sorting section 6B will be explained.

As shown in FIG. 1, idling rollers 22 and 23 are pivotally supported as a pair on the left and right at the front and rear of the front sorting section 6A, and the idling rollers 22 and 23 are supported by guides fixed to the side walls of the sorting section A. It is supported by rails 24 and 25 and is configured to be capable of linear reciprocating movement back and forth along the filtration and sorting surfaces of the chaff sieve 12 and grain sieve 13. Further, the lower ends of links 26 pivotally attached to the side walls are pivotally connected to the left and right front ends of the rear sorting section 6B, respectively, and an eccentric cam mechanism 27 is linked to the rear lower part so as to be able to swing back and forth. be. and,
A rotary link 28 is pivotally attached to the lower part of the side wall, one end of which is connected to the shaft 23a of the rear free end roller 23 via a first rod 29, and the other end and the eccentric cam mechanism 27 are connected to a second rod 30. Connected via
When the rotation link 28 rotates in conjunction with the rocking of the rear sorting section 6B, the front sorting section 6A moves linearly back and forth. Note that the front sorting section 6A and the rear sorting section 6B move at the same period and in opposite phases, so that the respective vibrations generated during driving cancel each other out.

As explained above, in the sorting structure of the threshing machine, the front sorting section 6A is linearly reciprocated along the filtration and sorting surfaces of the chaff sheave 12 and grain sheave 13, which are provided in a downwardly downward position. This suppresses the movement of the material to be sorted, and makes the cut straw vertically placed in the chaff sieve 12.
This prevents the particles from getting stuck in the grain sieve 13 and obstructing the feeding of the material to be processed, or from passing through and getting mixed into the first material collection section 8 as much as possible.

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

[Brief explanation of drawings]

The drawings show an embodiment of the structure of a sorting section of a threshing machine according to the present invention, and FIG. 1 is a side view, and FIG. 2 is a longitudinal side view of the threshing machine. 1... Handling room, 3... Receiving net, 5... Dust outlet, 6A
...Front sorting section, 6B... Back sorting section.

Claims (1)

[Claims] 1. A pre-sorting section 6A that sorts leaked matter that has leaked through the receiving net 3 of the handling room 1, and a post-sorting section that sorts out non-leaked matter that has fallen from the dust outlet 5 at the rear of the handling room 1. 6B, the front sorting section 6A is linearly reciprocated along its filtration and sorting surface, and the rear sorting section 6B is swing-driven.