JPH03195417A - Rocking screening system in thresher - Google Patents

Abstract

PURPOSE:To provide the title system intended to improve screening performance, so designed that a straw rack is set up in a specified state to afford a carrying surface, thereby making the cloggings of treated materials on the carrying surface. CONSTITUTION:A roughly screening section C2 is made up with a grain pan 10 and a front straw rack 24, the first straw rack 25 is located behind the front straw rack 24, and the second straw rack 26 is provided behind and below the first straw rack. And a carrying surface is afforded from the grain pan 10 toward the straw rack 26. The juxtaposed pitch for many first rack plates 25a are made larger than that for many second rack plates 26a.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a swing sorting device for a threshing machine.

[Conventional technology]

In many conventional threshing machines, the material conveying surface of the swing sorting device is configured to include a chaff sieve (for example, as shown in Japanese Utility Model Application Publication No. 1-109937, It is known that a chaff sieve for rough sorting is installed from the grain pan to the rear.

Compared to a straw rack, which consists of rack plates arranged in parallel along the direction of conveyance of the processed materials, chaff sieves are constructed with chaff flip plates arranged in parallel in a direction perpendicular to the direction of conveyance, so they can achieve stable sorting performance. There are advantages that are easy to demonstrate.

[Problem to be solved by the invention]

The oscillating sorting device has the function of sorting the materials to be processed and allowing the first items to be collected to leak into the collection section below, while transporting straw waste and other waste to the rear on the conveying surface and discharging it. However, as mentioned above, the chaff sieve is equipped with a large number of chaff flip plates perpendicular to the conveyance direction, so if paddy with branches, straw waste, etc. are caught across the chaff flip plates, the chaff sieve cannot be conveyed. The system sometimes became clogged, and there was still room for improvement.

An object of the present invention is to provide a swing sorting device that can exhibit good sorting performance without the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a rocking sorting device for a threshing machine, in which grain pans and a front stroke rack following the rear part of the grain pans are used to roughly sort out processed materials leaking from a receiving net. A first stroke rack for receiving and sorting the waste from the dust inlet is arranged at a rear position of the front stroke rack, and a large number of first rack plates are arranged side by side at a large pitch. At the same time, a second stroke rack is arranged at a rear lower position of the first stroke rack, and the pitch of the number of parallel second rack plates is the same as the pitch of the first rack plates. The present invention is characterized in that a conveying surface for transferring the processed material from the grain pan to the second straw rack is formed by providing the tray in a smaller size than the grain pan.

Further, by arranging a backward cantilever front sieve line between a large number of parallel rack plates in the front stroke rack, the pitch between the front sieve line and the rack plates can be adjusted to the first pitch. The pitch may be set to be smaller than the pitch between the rack plates.

Furthermore, a backward cantilevered rear sieve line may be provided below the first straw rack with a pitch smaller than the pitch between the first rack plates.

[For production]

According to the above configuration, since the conveying surface does not include a chaff sieve, the conveying surface does not tend to become clogged due to accumulation of paddy with branches, straw waste, etc., as in the conventional case.

In other words, even if straw waste straddles the rack plate of the straw rack and gets caught, since the rack plate is along the conveyance direction, it will be conveyed rearward in the straddled state.

In addition, the pitch of the rack plates in the first straw rack below the dust outlet, which mainly discharges branched paddy and straw waste, has been increased, so that branches that are shorter than straw waste can be collected. While the straw waste is being sieved towards the front, the straw waste to be discharged is transported towards the rear.

Most of the material conveyed on the second straw rack following the first straw rack is straw waste, and only a small amount of paddy (such as cut rice) is mixed in. By reducing the pitch between the rack plates, waste materials such as straw waste can be reliably transported to the rear while giving the paddy to be collected a final chance to be collected.

Most of the processed material leaking from the receiving net is paddy that has been made into single grains by threshing, but there are also paddy with branches that happened to pass through the receiving net in an upright position. In this case, the presence of the sieve line makes it possible to sieve the paddy with branches even on the front straw rack.

Further, in the third aspect of the present invention, the paddy with branches that has passed through the first straw rack is sieved and sorted on the sieve line before falling as it is toward the collection section.

〔Effect of the invention〕

Therefore, in the oscillating sorting device according to claim 1, the straw racks are arranged rationally to form the conveyance surface, so that the sorting device with improved performance can be achieved while making it difficult for the conveyance surface to become clogged with the processed material. Since we were able to realize this, we were able to provide a better threshing device.

In addition to the effects of the first aspect, the oscillating sorting device according to the second aspect also improves the rough sorting performance, so that the sorting performance is further improved.

Further, in addition to the effects of the first or second aspect, the oscillating sorting device according to the third aspect has the advantage that the sieve sorting performance at the first stroke rack portion is improved.

〔Example〕

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

As shown in FIG. 1, the threshing device includes a threshing section (A), a sorting section (B), a collecting section (C), and a second grain reducing section.

The threshing section (A) has a handling drum (2) mounted on a shaft in a handling room (1), and a receiving net (3) stretched along the lower side of the handling drum (2). The culm, which has been conveyed by the chain (4), is handled and processed by the handling cylinder (2),
The processed material is leaked and supplied onto the sorting section (B).

This threshing device is configured to forcibly vibrate the receiving net (3) along the circumferential direction of the handling cylinder (2) to prevent clogging. As shown in Fig. 4, the receiving net (3) is made by integrally molding a net (11) made of ultra-high molecular weight polyethylene that has excellent wear resistance and water repellency, and has an arc-shaped metal bow (12) on the top surface of the net (11). Two bolts are connected in parallel, and reinforcing plates (
13A) and (13B) are respectively attached, and are maintained in an arc shape along the rotation locus of the handling cylinder (2). Then, the side edges of the inlet and outlet sides of the handling chamber (1) are sandwiched from above and below between the arc-shaped mounting frames (14) and (15), and the handling barrel (1) is assembled.
It is supported so that it can freely move back and forth in the circumferential direction. In addition, Yukine (
12) and the reinforcing plates (13A) and (13B) are both made of metal and have sufficient strength.

As shown in FIG. 3, a forced vibration mechanism (16) for the receiving net (3) is provided at the upper part of the back side of the handling room (1).

The vibration mechanism (16) includes an eccentric cam (18) on the rotating shaft (17).
), and one end of the swinging arm (19) is pivoted to the side wall of the handling chamber (2).
20), and a pair of engagement pieces (21) are provided at the free end of the swing arm (19). The engagement piece (21
) is the reinforcing plate (13A) located on the opposite side of the handling port (23).
) (corresponding to a reinforcing member) is engaged with a bearing (22) mounted on the outer surface of the net (3), which absorbs the vibration of the swinging arm (19) that moves up and down with the rotation of the eccentric cam (18). I am telling you. The rotating shaft (17) is configured to transmit power from the handling cylinder (2) by a belt transmission mechanism (not shown).

The sorting section (B) consists of a swinging sorting device (5) and a winnow (6) that sends sorting air to the swinging sorting device (5). The oscillating sorting device (5) includes a lower grain pan (8) and a grain sieve (9) continuous to the rear and lower part of the lower grain pan (8) on both sides of a frame body (7) which can be freely oscillated. A fine sorting section (C1) is provided, and a receiving net (
3) Rough sorting section (C
2), and a large number of first stroke racks (25) for receiving and sorting the waste from the dust inlet (la) are installed in parallel at the rear position of the front stroke rack (24). The parallel pitch (Pl) of the first rack plate (25a) is increased (40
mm), and a second stroke rack (26) is disposed at a rear lower position of the first stroke rack (25), and a large number of parallel second rack plates (26a)
By providing the parallel pitch (P2) of the first rack plate (25a) smaller (20 mm) than the parallel pitch (Pl) of the first rack plate (25a), as shown in FIG. A conveying surface (D) is formed for transferring the processed material toward the second stroke rack (26).

By disposing a backward cantilevered front sieve line (27) between a large number of parallel rack plates (24a) in the front stroke rack (24), this front sieve line (
27) and the rack plate (24a) (P3)
) is the pitch (Pl) of the first rack plates (25a)
It is set to be smaller than (20 mm).

Further, at a lower position of the first stroke rack (25),
A backward cantilevered rear sieve (28) is disposed with a juxtaposition pitch (P4) smaller (20 mm) than the juxtaposition pitch (Pl) of the first rack plates (25a).

The plurality of rear sieve lines (28) are connected to the first stroke rack (
Two rear sieve lines (28) are arranged between the first rack plates (25a) in the first rack rack (25), and these rear sieve lines (28) are arranged in parallel in the left-right direction at equal intervals.
The first rack plate (25a) of the front stroke rack (24
) with the same left and right arrangement pitch (Pl) as the rack plate (24a)
), and the other rack plate (24a) is located at the center between the first rack plates (25a).

In other words, the rear sieve line (28) is connected to the first rack plate (25a).
When viewed from the back, both rack plates (25a) and (24a) and the rear sieve line (2
8) are arranged so that none of them overlap.

As shown in Fig. 1, the processed material leaking from the receiving net (3) and passing through the grain pan (10) and front stroke rack (24) is received by the lower grain pan (8) and sorted by specific gravity difference. After that, it is oscillatedly transferred to the rear grain sieve (9), and then oscillatedly transferred to the rear while being screened for leakage in the grain sieve (9), and dropped and discharged from the rear end. On the other hand, the handling room (
The processed material discharged from the dust inlet (1a) of 1) is received by the first stroke rack (25), and is oscillated rearward while being sorted for leakage and discharged to the second stroke rack (26). ,
This second stroke rack (26) separates the leakage again and discharges it out of the machine from the rear end. Note that (29) is a dust exhaust fan for discharging straw waste to the outside of the machine along with the sorting air.

The collecting section (C) includes a top collecting section (30) that collects the paddy that has leaked from the grain sieve (9), and a first and second straw rack that collects the paddy that is released from the rear end of the grain sieve (9). It consists of a secondary material collection section (31) that collects paddy with branches that leaked from (25) and (26). The first product collection section (30) is provided with a first screw (30a) for transporting the collected first product to the side, and the second product collection section (31) is provided with a first screw (30a) for transporting the collected first product to the side. A bottom case (32) having a valley shape and a circular bottom part is provided across the left and right vertical walls,
A second screw (33) is provided at the bottom of the bottom case (32) to transport the collected second item laterally.

As shown in FIG. 5, the lower grain pan (8) is configured to have a variable overall length in which the rear end position of its operation can be adjusted in the front and back direction, and the grain sheave (9) has an eye in the front half (9a). The mesh is set to be large, and the mesh in the rear half (9b) is set to be small. Incidentally, this grain sieve (9) is constructed as an integrally molded product of ultra-high molecular weight polyethylene having excellent abrasion resistance and water repellency.

The lower grain pan (8) includes a fixed grain pan (8a) fixed to the frame body (7), and a fixed grain pan (8a) fixed to the frame body (7).
and a sliding type movable grain pan (8b) that is movable in the front and back direction between the upper and lower sides of the grain sheave (9), and the rear end of the movable grain pan (8b) is connected to a fixed grain pan (8a). It is designed to be able to slide back and forth and maintain a fixed position from the rear end portion to the turning point of the mesh of the grain sheave (9).

The sliding operation of the movable grain pan (8b) is performed by the control section (
This is done using an operating lever (34) (not shown).

To explain the operation, when there is a large amount of processed material leaking from the front straw rack (24) etc. or when threshing is wet, the movable grain pan (8b) is moved forward to the retracted position. The grain sieve (9), which has a large mesh, is operated so that it is possible to sort the processed material from the front end, and the movable grain pan (8b) is operated when the amount of processed material is small or when threshing wheat. The protruding posture is moved to the rear, and it becomes possible to sort only the rear part (9b) of the grain sheave (9), which has a small mesh.

Further, depending on the amount of the material to be processed, the amount of protrusion of the movable grain pan (8b) can be appropriately adjusted to adjust the degree of sorting.

Further, the mesh size of the grain sheave (9) may be made to gradually become smaller steplessly or in multiple steps as it goes toward the rear.

Furthermore, the movable grain pan (8b) may be configured to automatically control its protrusion amount based on the detection result from the means for detecting the amount of the material to be processed.

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 drawings]

The drawings show an embodiment of a swing sorting device for a threshing device according to the present invention, and FIG. 1 is a cross-sectional side view showing the structure of the threshing device, and FIG.
The figure is a plan view of the oscillating sorting device, Figure 3 is a partially cutaway front view of the threshing section, Figure 4 is a cross-sectional side view of the receiving net, and Figure 5 is a cross-sectional side view showing the structure of the sorting section. be. (la)... Dust inlet, (3)... Receiving net, (10)...Glenpan, (24)...
...Front stroke rack, (24a)... Rack plate, (25)... First stroke rack, (
25a)...First rack plate, (26)...
...Second stroke rack, (26a)...Second
Rack plate, (27), (28)...Sieve line, (C2)...Rough sorting section, (D)...
Conveyance surface.

Claims (1)

[Claims] 1. Rough sorting section (C_2) for roughly sorting the processed material leaking from the receiving net (3) by means of the grain pan (10) and the front straw rack (24) following the rear part of the grain pan (10). , and a dust inlet (
The first straw rack (25) that receives and sorts the waste from
In addition to arranging a) with a large parallel pitch,
A second straw rack (25) is located at the rear and lower position of the first straw rack (25).
The straw rack (26) is arranged such that the pitch of the plurality of second rack plates (26a) arranged in parallel is the same as that of the first rack plate (25a).
) to form a conveying surface (D) for transferring the processed material from the grain pan (10) to the second straw rack (26). Swinging sorting device of the device. 2. By arranging a backward cantilevered front sieve line (27) between a large number of parallel rack plates (24a) in the front straw rack (24), the front sieve line (27)
) and the rack plate (24a) are arranged at a pitch equal to the first
The swing sorting device for a threshing device according to claim 1, wherein the pitch is smaller than the pitch between the rack plates (25a). 3. At the lower position of the first straw rack (25), a backward cantilevered rear sieve line (
28) The swing sorting device for a threshing device according to claim 1 or 2, further comprising: 28).