JPH07274687A - Threshing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] In a thresher equipped with a dust control valve with adjustable opening, the chaff sheave is improved by considering the opening of the dust control valve and making effective use of its characteristics. Improve the accuracy of sorting processed materials. In a threshing device provided with a dust delivery valve for changing the feed amount of a processed material in a handling chamber by adjusting the opening degree, and a chaff sheave 12 whose opening degree is adjusted according to the processed material amount, the chaff sheaves 12 are independent of each other. Is divided into a first half 12A and a second half 12B whose opening is adjusted, and the opening of the front half 12A of the chaff sheave 12 becomes smaller as the opening of the dust delivery valve becomes larger. And the latter half 12B of the chaff sheave 12
However, the larger the opening of the dust delivery valve, the larger the opening with respect to the amount of processed material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device provided with a dust delivery valve for changing the feed amount of a processed material in a handling chamber by adjusting the opening degree and a chaff sheave whose opening degree is adjusted according to the processed material amount.

[0002]

2. Description of the Related Art Conventionally, in the above threshing device,
The opening of the chaff sheave was adjusted to a uniform opening according to only the amount of processed material, regardless of the opening of the dust delivery valve. In other words, when the amount of processed material is large, the opening is adjusted so that the opening of the entire chaff sheave is uniformly increased regardless of the opening of the dust delivery valve, thereby promoting the leakage of the processed material and improving the sorting efficiency. On the other hand, when the amount of processed material is small, the opening is adjusted so that the opening of the entire chaff sheave is uniformly reduced regardless of the opening of the dust-sending valve. It has been attempted to prevent leakage and improve the sorting accuracy [JP-A-4-360617].
No. publication].

[0003]

However, the dust delivery valve is used, for example, when threshing difficult threshing grains.
By reducing the opening of the dust delivery valve to prevent the processed material from being sent to the rear, the retention time of the processed material in the handling chamber is increased to improve the threshing ability and improve the threshing accuracy. When threshing threshed grains, for example, the opening of the dust feed valve is increased to promote the backward feeding of the treated products, thereby shortening the retention time of the treated products in the handling chamber and damaging the grains. Since it aims to suppress threshing and improve threshing accuracy and threshing efficiency, in a threshing device equipped with a dust delivery valve, the size of the opening of the dust delivery valve causes the distribution of the processed material in the chaff sieve to be Since the ratio will be greatly different, if the opening of the entire chaff sheave is adjusted to a uniform size according to only the amount of processed material regardless of the opening of the dust delivery valve as in the above-mentioned conventional technique, the opening will be adjusted. Depending on the opening of the dust valve, the opening may be adjusted. , Rather it becomes adversely affect the sorting accuracy of the chaff sieve, had become impossible crude selection of good treated by chaff sieve.

In other words, in the threshing device which is not provided with the dust delivery valve, when the amount of processed product increases, the processed product leaked and supplied to the latter half of the chaf sheave increases, and the grain in the latter half of the chaf sheave also increases. Since the proportion of the chaff sheave is relatively large, the opening degree is adjusted so that the opening degree of the entire chaf sheave is uniformly increased, so that the leakage of the grains from the entire chaf sheave is promoted and the selection efficiency is improved. However, in a threshing device equipped with a dust feeding valve, for example, when threshing difficult threshing grains, the opening of the dust feeding valve is reduced to feed the processed material to the rear. If the amount of processed material is increased, the amount of processed material that leaks into the latter half of the chaf sheave is comparatively small even if the amount of processed material becomes large. Therefore, if the opening of the chaff sheave is adjusted so that the opening of the entire chaff sheave is evenly increased in order to promote the leakage of grains, most of the cut straws and straw debris will leak from the latter half of the chaff sheave. I started to go down
It was becoming a bad influence on the sorting accuracy of chaff sheaves. Further, in a threshing device that does not have a dust delivery valve, when the amount of processed material decreases, the amount of processed material leaked and supplied to the latter half of the chaf sheave also decreases, and cut straws and straw debris in the latter half of the chaf sheave Since the opening of the chaff sheave is adjusted to be uniformly small, the opening of the chaf sheave will be controlled to prevent the leakage of cut straws and debris from the latter half of the chaf sheave. Although it is possible to improve the accuracy, in a threshing device equipped with a dust feeding valve, for example, in the case of threshing easily threshed grains, the opening of the dust feeding valve is increased to the rear of the processed object. If the amount of processed products is reduced, the amount of processed products leaked to the latter half of the chaf sheave is relatively large even if the amount of processed products becomes small. Since the ratio of the chaff sheave is relatively large, the opening is adjusted so that the opening of the entire chaff sheave is uniformly reduced to prevent leakage of cut straw and straw debris. The number of grains that did not leak and were reprocessed unnecessarily and damaged, and the grains that were discharged outside the machine to become the third loss increased, which adversely affected the sorting accuracy in the chaff sieve.

The object of the present invention is to improve the threshing device provided with a dust-feeding valve whose opening can be adjusted by considering the opening of the dust-feeding valve and improving the chaff sheave by effectively utilizing its characteristics. It is to improve the sorting accuracy of the processed products.

[0006]

In order to achieve the above object, in the present invention, a dust delivery valve for changing the feed amount of the processed material in the handling chamber by adjusting the opening degree, and the opening degree is adjusted according to the processed material amount. In a threshing device having a chaff sheave, the chaff sheave is divided into two parts, a first half and a second half whose opening is independently adjusted, and the first half of the chaf sheave has a large opening of the dust delivery valve. The opening degree with respect to the processed material amount becomes smaller, and the latter half of the chaff sheave is configured such that the opening degree with respect to the processed material amount becomes larger as the opening degree of the dust delivery valve increases.

[0007]

According to the present invention, the opening degree of the chaff sieve is adjusted so that the opening degree of the whole chaff sieve becomes larger as the amount of the processed material increases, so that the leakage of the grains in the processed material is promoted. The smaller the amount of the processed material, the opening degree is adjusted so that the opening degree of the entire chaff sheave becomes smaller, and it is natural that the leakage of the cut straws and straw scraps in the processed material is suppressed, and that In any opening adjustment based on the amount of processed material, leakage is supplied in the first half of the chaff sheave as much as the opening of the dust delivery valve is increased to promote the backward feeding of the processed material. Since the amount of processed material becomes relatively small, the opening degree of the chaff sheave with respect to the amount of processed material is adjusted to be small,
Leakage such as cut straws and straw debris in the processed material becomes relatively suppressed, and in the latter half of the chaff sheave, the amount of processed material that is leaked and supplied becomes relatively large. The opening is adjusted so that the opening becomes large, and the leakage of the grains in the processed product is relatively promoted. In addition, as the opening of the dust feed valve is made smaller to suppress the backward feeding of the processed matter, the treated matter to be leaked and supplied in the first half of the chaff sheave becomes relatively large. The opening degree of the chaff sheave with respect to the physical quantity is adjusted so as to relatively promote the leakage of the grains in the treated material, and in the latter half portion of the chaf sheave, the treated material supplied under leakage is treated. Since the amount of chaff sheave is relatively small, the opening degree of the chaff sheave is adjusted so as to be small with respect to the amount of the processed material, so that leakage of cut straws, shavings and the like in the processed material is relatively suppressed.

[0008]

Therefore, according to the present invention, in addition to adjusting the opening degree of the chaff sheave based on the amount of processed material, the opening degree of the front half portion and the latter half portion of the chaff sheave are independently adjusted based on the opening degree of the dust delivery valve. By doing so, it becomes possible to finely adjust the opening degree of the chaff sheave according to the amount of processed material or the type and situation of the grain, and the leakage or the grain of cut straw or straw debris that adversely affects the sorting accuracy in the chaff sieve. It is now possible to perform good rough selection of treated products that can avoid grain damage and grain loss due to poor leakage. In other words, in a thresher equipped with a dust control valve whose opening can be adjusted, the chaff sheave is improved by considering the degree of opening of the dust control valve and making effective use of its characteristics. You can now plan.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a threshing device A of a whole culm throw type combine will be described with reference to the drawings.

FIG. 1 shows a vertical side surface of a threshing device A mounted on an all-culm throw-in type combine. This threshing device A is a threshing part A1 for threshing the cut culm fed by the feeder 1. , Sorting to sort the processed product from the threshing part A1 into the first one consisting of threshing grains and the second one consisting of unthreshed grains such as grain with branches and the third one consisting of dust such as broken straw and straw scraps It is composed of a section A2 and a recovery section A3 for recovering the first and second products sorted by the sorting unit A2.

The threshing portion A1 has an axial-flow type handling cylinder 2 provided with spiral handling teeth 2A, a concave 3 as a receiving net stretched below the handling cylinder 2, and the degree of opening adjustment. It is constituted by a dust feeding valve 5 for changing the feed amount of the processed material in the handling chamber 4 and the like, and by driving and rotating the handling barrel 2, the cut grain culms are treated and long straws or broken straws are provided. It is designed to be discharged out of the machine from the rear. As shown in FIG. 2, the dust-sending valves 5 are arranged on the left and right of the upper part of the handling chamber 4 at predetermined intervals in the front-rear direction,
By manipulating the switch 5a for adjusting the opening degree of the dust-sending valve provided in the control section, the opening amount of the dust-sending valve 5 according to the type and the state of the processed material is sent to the control device 6 equipped with a microcomputer. By commanding, through the electric motor 7 for changing the opening degree of the dust feeding valve 5 and the linking rod 8, the respective vertical axis P1
The opening is integrally adjusted by swinging back and forth around. Reference numeral 4s in FIG. 1 is a contact-type flow rate sensor for detecting the flow rate of the processing object in the handling chamber 4, reference numeral 9 is a chopper for finely knocking out discharged long straws or broken straws, and reference numeral 5s in FIG. Is an opening sensor that detects the opening of the dust delivery valve 5. Moreover, the processed material obtained by the treatment of the cut culm is leaked from the concave 3.

The sorting section A2 receives the processing material leaked from the front part of the concave 3 and transfers it to the rear side.
0, a perforated carrier plate 11 for permeating many grains of the processed product transferred from the Glen Pan 10, a perforated carrier plate 1
Chaf sheave 12 that performs rough selection of processed products in series with 1.
A rear sheave 13 that is connected to the chaff sheave 12 to perform rough selection of the processed products, and a perforated conveyance plate 11 and the chaff sheave 1
In addition to a grain sieve 14 for sorting the best products for performing precise sorting of the processed material leaked from 2, the eccentric cam type driving mechanism 15 has a driving force to swing the vertical and forward and backward components. It is composed of a rocking sorting case 16 configured to be rockable along a locus, a Karako 17 disposed at the lower front of the threshing device A and supplying wind power toward the rocking sorting case 16, and the like. The swing sorting case 16 swings the sieve and wind from the Karako 17 to sort the grain of the processed material, and blows dust such as cut straw and straw dust backward to convey the machine. It is designed to be discharged outside.

The recovery unit A3 is a first-product recovery unit 18 for recovering the threshed grains as the first product that has leaked from the grain sieve 14.
And a second product recovering unit 19 for recovering undehulled grains such as grain with branches that has not leaked from the Glensieve 14 and the second product that has leaked from the rear sheave 13. . The threshed grains collected by the first item collecting section 18 are conveyed by the first screw conveyor 20 and a bucket conveyor (not shown) and stored in a Glen tank (not shown). On the other hand, the non-hulled grains collected by the second grain collecting section 19 are reprocessed by the second grain reducing device 21 having a reprocessing function, and then fed back to the sorting section A2.

As shown in FIG. 3, the power supplied from the engine 22 mounted on the right front part of the traveling machine body to the handling barrel 2 of the threshing device A, the drive mechanism 15 or the Karako 17 is the sorting wind from the Karako 17. Is distributed on the left side of the opened threshing device A via a counter shaft 23 that traverses the air passage R through which the power transmission system is separated. Is made easy. On the other hand, a cross-flow fan 24 is attached to the counter shaft 23 so as to be able to rotate integrally with the counter shaft 23, and the sorting wind from the Karako 17 is efficiently directed toward the perforated transport plate 11 and the chaff sheave 12 of the rocking sorting case 16. It can be supplied. Further, as shown in FIG. 1, below the cross flow fan 24, there is provided a wind direction plate 25 pivotally supported around the left and right axial center P2 so as to be vertically swingable for adjusting a selection air flow rate. 25 is linked so that it swings downward as the number of rotations of the Karako 17 increases. In other words, as the sorting wind from the Karato 17 increases, the proportion of the rough sorting wind supplied to the perforated transport plate 11 and the chaff sheave 12 increases relative to the proportion of the fine sorting wind supplied to the Glensieve 14. It is supposed to be.

The structure of the chaff sheave 12 will be described in detail. As shown in FIG.
The chaff sheave 12 has a front half 12A and a rear half 7B each having a plurality of chaflip plates 12 arranged at equal intervals in the front-rear direction.
It is composed of a and 12b. Further, at the upper ends of the respective cha flip plates 12a and 12b, the swing selection case 1 is attached.
Support shafts a1 and b1 pivotally connected to 6 are provided so as to project outward in the left and right directions, and respective cha flip plates 12a and 1 are provided.
Linking shafts a2 and b2 are provided at the lower end of 2b so as to project outward in the left and right directions. Each of the linking shafts a2 and b2 is pivotally connected to the pair of left and right connecting plates 26A and 26B at equal intervals in the front-rear direction. The first half 12A of the chaff sheave 12
The operation arm 27A is connected to one of the plurality of chaf flip plates 12a forming a shaft via a support shaft a1 and a link shaft a2. The operation arm 27A is connected to the chaff sheave via a release wire 28A. An electric motor 29A for changing the opening of the first half 12A is linked. on the other hand,
An operation arm 27B is connected to one of the plurality of char flip plates 12b forming the second half 12B of the chaff sheave 12 via a support shaft b1 and a link shaft b2. The operation arm 27B is connected to the release arm 27B. An electric motor 29B for changing the opening degree of the chaf sheave rear half 12B is linked via a wire 28B. In addition, each electric motor 29
A and 29B are driven and controlled by the control device 6. That is, the first half 12A of the chaff sheave 12
The second half 12B and the second half 12B are independently adjusted in opening degree by the operation of the control device 6. 30A in the figure
And 30B are springs that urge the respective operation arms 27A and 27B in the direction opposite to the pulling direction by the respective release wires 28A and 28B.

The control device 6 is provided with the respective control modes shown in FIGS. 5 and 6 as a control program for adjusting the opening degree of the chaff sheave 12. The control mode shown in FIG. 5 is for adjusting the opening degree of the front half portion 12A of the chaff sheave 12, and the front half portion 12A of the chaff sheave 12 is
It is set such that the opening degree increases as the amount of processed material increases, and the opening degree with respect to the processed material amount decreases as the opening degree of the dust delivery valve 5 increases. On the other hand, the control mode shown in FIG. 6 is for adjusting the opening degree of the latter half 12B of the chaff sheave 12, and the latter half 1 of the chaff sheave 12 is controlled.
2B is set such that the opening degree increases as the amount of processed material increases, and the opening degree with respect to the processed material amount increases as the opening degree of the dust sending valve 5 increases.

Next, the adjustment of the opening degree of the front half 12A and the rear half 12B of the chaff sheave 12 by the operation of the control device 6 will be described. As shown in FIGS. 2, 5 and 6, first, the control device 6 Based on the opening α of the dust delivery valve 5 detected by the opening sensor 5s, the opening adjustment modes Ma and Mb of the front half 12A and the rear half 12B of the chaff sheave 12 are selected from the respective control modes. Then, the opening βa of the chaf sheave front half 12A and the opening β of the chaf sheave rear half 12B with respect to the amount v of the processed material detected by the flow rate sensor 4s from the selected opening adjustment modes Ma and Mb.
and b so that the actual opening of the chaflip plate 12a of the first half of the chaff sheave 12A becomes βa and the actual opening of the chaflip plate 12b of the second half of the chaffsive 12B becomes βb. 29B is driven and controlled. In addition, reference symbols Sa and Sb in FIG.
It is a sensor for detecting a chaff opening provided for performing feedback control.

That is, the opening degree of the chaf sheave 12 is adjusted so that the opening degree of the entire chaf sheave 12 becomes larger as the amount of the processed material increases, and the leakage of the grains in the processed material is promoted. The opening degree of the chaf sheave 12 is adjusted so that the opening degree of the entire chaf sheave 12 becomes smaller as the amount of the processed material is smaller, so that leakage of cut straws or straw chips in the processed material is suppressed. In any opening adjustment based on the amount of the processed material, as in the case where the opening of the dust feeding valve 5 is increased to promote the backward feeding of the processed material, the front half portion 12A of the chaff sheave 12 is , Leakage Since the amount of processed material supplied is relatively small, the opening degree of the chaff sheave 12 is adjusted so that the opening degree of the chaff sheave 12 with respect to the amount of processed material is adjusted, and the leakage of cut straws or straw debris in the processed material is compared. Will be suppressed, chaff sheave 1
In the latter half 12B of 2, since the amount of the processed material supplied under leakage becomes relatively large, the opening degree of the chaff sheave 12 is adjusted so that the opening degree of the chaff sheave 12 with respect to the processed material amount becomes large, and the leakage of the grains in the processed material is suppressed. It is designed to promote down relatively. Further, in the case where the opening of the dust feeding valve 5 is made smaller to suppress the backward feeding of the processed matter, in the front half portion 12A of the chaff sheave 12, the leakage-supplied processed matter becomes relatively large. Therefore, the opening degree of the chaff sheave 12 is adjusted so that the opening degree of the chaff sheave 12 with respect to the amount of the processed material is adjusted to relatively promote the leakage of the grains in the processed material. Since the amount of the processed material to be supplied below is relatively small, the opening degree of the chaff sheave 12 is adjusted so that the opening degree of the chaff sheave 12 with respect to the amount of the processed material is reduced, so that the leakage of cut straws or shavings in the processed material becomes relatively small. It is supposed to suppress. Further, the control device 6 is
The opening degree of the chaff sheave 12 can be adjusted according to the distribution of the treated matter on the chaff sheave 12, which varies depending on the amount of the treated matter and the opening degree of the dust delivery valve 5.

[Other Embodiments] Other embodiments of the present invention will be listed below. The present invention may be applied to a self-removing combine equipped with a dust sending valve whose opening degree can be adjusted. As a sensor for detecting the amount v of processed material, a sensor for detecting a decrease in the engine speed with an increase in the work load, a sensor for detecting a decrease in the handle cylinder speed with an increase in the work load, or the chaff sheave 12 is used. It is also possible to detect the accumulated amount of the above-mentioned processed material.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1 is a vertical side view of the threshing device.

FIG. 2 is a partially cutaway plan view of a threshing unit.

FIG. 3 is a schematic diagram showing a part of a transmission structure.

FIG. 4 is a vertical sectional side view of a swing selection case showing a structure of a chaff sheave.

FIG. 5 is a graph showing the relationship between the chaff sheave opening, the amount of processed material, and the opening of the dust delivery valve.

FIG. 6 is a graph showing the relationship between the chaff sheave opening degree, the amount of processed material, and the dust delivery valve opening degree.

[Explanation of symbols]

 4 Handling Room 5 Dust Control Valve 12 Chaf Sheave 12A 1st Half 12B 2nd Half

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Tanaka 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Claims] 1. A dust delivery valve (5) for changing the feed amount of a processed material in a handling chamber (4) by adjusting the opening degree, and a chaff sheave (12) whose opening degree is adjusted according to the processed material amount. A threshing device, wherein the chaff sheave (12) is divided into a first half portion (12A) and a second half portion (12B) whose opening degrees are independently adjusted, and a front half portion (12) of the chaff sheave (12).
A) is such that as the opening degree of the dust delivery valve (5) increases, the opening degree with respect to the processed material amount decreases, and the latter half portion (12B) of the chaff sheave (12) includes the dust delivery valve (5). ) The threshing device configured such that the larger the opening degree, the larger the opening degree with respect to the processed material amount.