JP2000262138A - Sheave case structure of threshing equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a sheave case structure of a threshing device capable of improving the sorting accuracy while reducing the weight of a sheave case. SOLUTION: A group of chaff flip plates 19a of a chaff sheave provided in a sheave case is connected so as to be able to swing freely around an axis of a lateral support shaft 25 provided on each of them, so that the opening of the chaff sheave can be adjusted. Each chaflip board 19a
Is integrally molded from synthetic resin, and a metal rod 31 is fixed to the chaflip plate 19a over the entire width thereof in the longitudinal direction. Of the rods 31, from the longitudinal ends of the chaflip plate 19a The portions protruding laterally outward are formed on the support shaft 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chief sheave provided in a sheave case, wherein a group of chaff flip plates is connected so as to be swingable about the axis of a lateral support shaft provided in each of the sheave cases. The present invention relates to a sheave case structure of a threshing device configured to be adjustable.

[0002]

2. Description of the Related Art Conventionally, as a sheave case structure of this kind of threshing apparatus, as shown in FIG. 8 (a), each chaflip plate 51 is formed by bending a sheet metal, and A metal support shaft 52 is welded to each of the two upper ends in the longitudinal direction, or as shown in FIG. 8 (b), each chaflip plate 51 and the support shaft 52 are integrally formed from synthetic resin. there were.

[0003]

However, in the above-mentioned conventional sheave case structure, each chaflip plate 5
Since 1 is made of sheet metal, its own weight is increased, and there is a problem that the whole sheave case becomes large in weight.

In the latter conventional sheave case structure, each chaflip plate 51 and its support shaft 52 are integrally formed of synthetic resin to reduce the weight of the chaflip plate 51 and to increase the size of the sheave case. Although the weight increase could be suppressed, as the weight of the processed material on the chaff sheave increases, the chaff flip plate 51 is more likely to bend and deform. There is a possibility that the clearance between the chaflip plates 51 cannot be secured, and the accuracy of sorting the processed products may be reduced. Therefore, there is room for improvement in improving the sorting accuracy.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a main problem thereof is that a sheave case structure of a threshing apparatus capable of improving the sorting accuracy while reducing the weight of the sheave case. The point is to provide.

[0006]

The feature of the sheave case structure of the threshing apparatus according to the first aspect of the present invention is that a shaft of a horizontal support shaft provided with a group of chaff flip plates of a chaff sheave provided in the sheave case. A sheave case structure for a threshing apparatus in which the opening of the chaff sheave is adjustable by linking and swinging around a core, wherein each of the chaff flip plates is integrally formed of synthetic resin, A metal rod-shaped body is fixed to the plate over the entire width in the longitudinal direction, and portions of the rod-shaped body protruding laterally outward from both ends in the longitudinal direction of the chaflip plate are formed on the support shaft. It is in the point that has been.

(Function) According to the above-mentioned characteristic configuration, by forming each chaflip plate integrally from a synthetic resin, for example, the weight of the chaflip plate is reduced as compared with a case where the chaflip plate is bent from a sheet metal. Can be achieved.
Nevertheless, the bending deformation of each chaflip plate can be suppressed by a metal rod fixed to the upper end of each chaflip plate over the entire width in the longitudinal direction.
In other words, while reducing the weight by integrally molding each chafflip plate from a synthetic resin, the processed material on the chaff sheave has a metal rod-shaped body fixed to each chafflip plate over its entire width in the longitudinal direction. Since the flexural deformation of each of the chaff flip plates due to the weight can be suppressed, it is easy to secure an appropriate gap between the chaff flip plates with respect to the amount of processed material only by adjusting the opening of the chaff sheave. (Effect) Therefore, it is possible to improve the sorting accuracy while reducing the weight of the sheave case.

[0008] The characteristic feature of the sheave case structure of the threshing apparatus according to the second aspect of the present invention is that the urging means for elastically urging the chaff sheave to the closing side is provided and the weight of the processed material acting on the chaff sheave is increased. The point is that the opening degree of the chaff sheave is configured to change.

(Function) According to the above-mentioned characteristic configuration, as the amount of the processed material on the chaff sheave increases and the weight of the processed material acting on the chaff sheave increases, the weight of the processed material on the chaff sheave increases in proportion to the amount of the processed material on the chaff sheave. The degree of opening increases against the elastic urging force of the urging means, and conversely, as the amount of processed material on the chaff sheave decreases and the weight of the processed material acting on the chaff sheave decreases, the elastic urging force of the urging means causes The degree of opening of the chaff sheave is reduced in a state substantially proportional to the amount of processed material on the chaff sheave. That is, the opening degree of the chaff sheave can be automatically adjusted in accordance with the amount of processed material on the chaff sheave. In addition, for example, when each chaflip plate is formed by bending a sheet metal, the self-weight of the chaflip plate becomes large, so that during the sorting operation, the tip of the chaflip plate swings under the influence of the swing of the sheave case. The larger the rotational moment acts on the side, the easier it is for the chaff flip plate group to swing its own weight around the axis of the support shaft regardless of the weight of the processed material. As a result, the processed material on the chaff sheave is repelled or unnecessary. Although there is a possibility that the inconvenience of leaking may occur and the sorting accuracy may decrease, in the invention of the above-mentioned claim 2, while reducing the weight by integrally molding each chaflip plate from synthetic resin, With a metal rod fixed over the entire width in the longitudinal direction,
The deflection of each of the chaff flip plates due to the weight of the processed material on the chaff sheave is suppressed, and furthermore, since this support shaft is located at the swing support point of the chaff flip plate, the weight of the support shaft itself increases the rotational moment. It hardly becomes a factor, and the swing of the chaflip plate group due to its own weight caused by the swing of the sheave case can be suppressed. (Effects) Therefore, automatic opening adjustment of the chaff sheave in accordance with the amount of the processed material on the chaff sheave can be performed, and the sorting accuracy can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 shows a vertical left side view of a threshing device mounted on a combine. This threshing device has a feed chain 1 disposed on the left side thereof. A threshing unit 2 that performs threshing on the tip side of the harvested culm that is pinched and conveyed in a horizontal position, a sorting unit 3 that performs a sorting process on the processed material from the threshing unit 2, and a sorting unit 3. A collection unit 4 for collecting the first and second products among the sorted products is provided.

The threshing unit 2 includes a handling cylinder 5 driven and rotated around a longitudinal axis, a receiving net 6 disposed below the handling cylinder 5, a dust outlet 7 formed behind the receiving net 6, and the like. Is provided, and the handling cylinder 5
The cereal is separated from the harvested culm held and conveyed by the feed chain 1 in the above-mentioned manner, and the crushed kernels and broken straw are leaked from the receiving net 6 and the grains which have not leaked from the receiving net 6. Particles and broken straw are discharged from the dust outlet 7.

The sorting unit 3 is provided with a processing cylinder 8 disposed behind a dust port 7 and below the receiving net 6 and the processing cylinder 8 while being supported so as to be able to swing back and forth. The sheave case 9 is provided with, for example, Karamin 10 arranged in front of and below the sheave case 9. The sheave case 9 is oscillated by the operation of a crank mechanism 11 attached to the rear of the sheave case 9, so that the shedding case 2 In addition to performing sieving and sorting on the treated material of the present invention, Karamin 10 supplies a sorting wind toward the sieve case 9 so as to add wind sorting to the treated material sieved and sorted by the sieve case 9. Has become. By these sorting operations, the processed material from the threshing unit 2 is divided into a grain as the first thing, a mixture of the grain as the second thing and the straw, and a straw as the third thing. And so on.

The collecting section 4 is provided with a first article collecting section 12 disposed below the sheave case 9 and behind the Karamin 10, and a second article disposed below the sheave case 9 and disposed behind the first article collecting section 12. The item collection unit 13 and the like are provided.

The first thing collecting section 12 collects the first thing among the processed materials sorted by the sorting section 3 and arranges the collected first thing on the bottom thereof in a left-right direction. The first screw 14 is configured to be conveyed to a first material lifting device 15 having a lifting screw connected to the right end thereof. Second collection part 13
Collects the second thing among the processed materials sorted by the sorting unit 3, and collects the collected second thing by a second screw 16 arranged left and right at the bottom thereof.
It is configured to be conveyed to a second product lifting device 17 having a second reduction screw connected to the right end thereof. In addition, the first material lifting device 15 lifts the first material conveyed by the first screw 14 and from above a storage unit (not shown) juxtaposed to the right side of the threshing device. It is configured to supply. The second product lifting device 17 is configured to lift the second product transported by the second screw 16 and return the second product to the sheave case 9.

The sheave case 9 is provided with a first Glen pan 18 provided at an upper front end of the sheave case 9, a chaff sheave 19 provided so as to be connected to a rear end of the first Glen pan 18, and a chaff sheave 19 provided above the chaff sheave 19. The second grain pan 20, the sieve wire 21 extending rearward from the upper surface of the second Glen pan 20, the straw rack 22 arranged in a state of being connected to the rear end of the chaff sheave 19, the chaff sheave 1
9 and a Glen sheave 24 arranged in a state of being connected to the rear end of the third Glen pan 23. Specifically, the sheave case 9 is formed by integrally forming the first Glen pan 18, the third Glen pan 23, and the Glen sheave 24 on a synthetic resin sheave case main body 9A formed in a frame shape, and the chaff sheave 19, the second Glen pan 20, The straw rack 22 is formed from synthetic resin, and the chaff sheave 19 is formed.
And the second grain pan 20 and the straw rack 22 are disposed so as to extend between the left and right side walls 26 of the sheave case main body 9A.

The first grain pan 18 receives processed materials such as grains and cut straw leaked from the front side of the receiving net 6 and transports them rearward while sorting by specific gravity difference.

The second grain pan 17 transports processed materials such as grains and broken straws discharged from the dust port 7 to the rear while sorting them with a specific gravity difference, and from the rear side, the grains and the heavy heavy specific gravity. The cutting straw is leaking.

The sieve wire 21 is transferred by the second Glen pan 20, and the remaining processed material which has not leaked on the rear side is transferred rearward while being loosened by the processing cylinder 8 driven and rotated around the horizontal axis. You will be guided.

The chaff sheave 19 is formed of a processed material leaked from the rear side of the receiving net 6, a processed material transferred by the first Glen pan 18, and a processed material leaked from the rear side of the second Glen pan. The remaining processed material is transported rearward while the particles and the like are roughly sorted and leaked.

The straw rack 22 sieves and sorts grains and the like out of the processed material transferred by the chaff sheave 19, leaks the same to the second product recovery unit 13, and transfers the remaining processed material backward. And discharge it outside the machine.

The grain sieve 24 carefully sorts the kernels from the processed material transferred by the third grain pan 23 and the processed material leaked from the chaff sieve 19, leaks the grains to the first material recovery unit 12, and removes the remaining grains. The processed material is transported toward the rear second collection part 13.

As shown in FIG.
Represents a group of chaflip plates 19a arranged side by side in the front-rear direction,
The sheave case 9 is pivotally connected to a fixed plate 27 provided on the inner surface of the left and right side walls 26 so as to be swingable about the axis X of the lateral support shaft 25 provided at each upper end thereof. At the same time, it is possible to adjust the opening degree by interlocking and connecting the horizontal support shafts 28 provided at their lower ends with the connection plate 29, that is, the opening degree between the adjacent chafflip plates 19a in the front-rear direction can be adjusted. Is configured.
Further, the chaff sheave 19 is elastically urged toward the closing side by an urging means 30 including a coil spring 30a.

With the above structure, as the amount of the processing material deposited on the chaff sheave 19 increases and the weight of the processing material acting on the chaff sheave 19 increases, the weight of the processing material on the chaff sheave 19 increases in proportion to the amount of the processing material on the chaff sheave 19. Can be increased, and conversely, the smaller the amount of processed material deposited on the chaff sheave 19 and the smaller the weight of the processed material acting on the chaff sheave 19,
Due to the elastic biasing of the biasing means 30, the opening of the chaff sheave 19 can be reduced in a state that is substantially proportional to the amount of the processed material on the chaff sheave 19. That is,
The opening degree of the chaff sheave 19 can be automatically adjusted in accordance with the amount of processed material on the chaff sheave 19 simply by providing the chaff sheave 19 so as to be openable and closable, and providing the urging means 30 for elastically urging the chaff sheave 19 to the closing side. It has become.

As shown in FIGS. 2 and 3, each of the chaff flip plates 19a is integrally formed of a synthetic resin, and the lower end of the plate portion provided with the both support shafts 25 and 28 is transferred by the chaff sheave 19 to transfer the processed material. It is formed in a substantially L-shaped cross section bent at an angle of about 90 degrees toward the upper side in the direction (the first Glen pan side). A round bar, which is an example of the metal rod 31, is provided at a plurality of longitudinal ends (lateral directions) on the lower side (the side of the straw rack 22) in the transfer direction of the processed material by the chaff sheave 19 at the upper end of each of the chaff flip plates 19 a. A fitting holding portion 32 for internally fitting and holding the inside 31a in a relatively non-rotatable state is integrally formed at a predetermined interval, and a rod 31 is fitted to each fitting holding portion 32 from the lower side in the transport direction. A slit 32a for press-fitting into the holding portion 32 is formed.

The entire length of the rod 31 is larger than the entire width in the longitudinal direction of the chaflip plate 19a.
The rod 31 is internally fitted and held across the fitting holding portions 32 in a state where both ends of the rod 31 project from both ends in the longitudinal direction of the chaflip plate 19a.

That is, the chaflip plate 19 made of synthetic resin is used.
At the upper end of a, a metal rod 31 is fitted and fixed over the entire width in the longitudinal direction, and among the rods 31,
The portions protruding from both ends in the longitudinal direction of the chaflip plate 19a are formed on a lateral support shaft 25 provided at the upper end of the chaflip plate 19a, and the support shaft 25 is rotatably supported by a fixed plate 27. The chaflip plate 19a is configured to be swingable. Further, the lateral support shaft 28 provided at the lower end of each of the chaff flip plates 19a is constituted by a pin-shaped protrusion integrally formed from each of both longitudinal side surfaces of the chaff flip plate 19a, and is constituted by a chaff sheave. Reference numeral 19 denotes an opening which can be adjusted by interlocking connection of horizontal support shafts 28 integrally formed at the lower end of the chaflip plate 19a with a connection plate 29.

As shown in FIGS. 4 to 6, the end of the support shaft 28 at the lower left end of one of the chaff flip plates 19a constituting the chaff sheave 19 is provided with a sheave case body 9A. A pin 33 protruding outward from the left side wall 26 is extended. On the other hand, a long hole 34 is formed in the left side wall 26 of the sheave case main body 9A to allow the pin portion 33 to move in accordance with the opening / closing operation of the chaff sheave 19. The long hole 34 is provided with an axis X of the horizontal support shaft 25 provided at the upper end of the chaflip plate 19 a having the pin 33.
Are formed in an arc shape centered on the
Are in contact with each other, the chaff sheave 19 is in the minimum limit opening state (substantially fully closed state), and the pin 33
Is restricted, the movement of the pin portion 33 accompanying the opening / closing operation of the chaff sheave 19 is regulated so that the chaff sheave 19 is in the limit maximum opening state (full open state). Further, a fulcrum shaft 35 projecting outward from the left side wall 26 of the sheave case main body 9A is coaxially provided at an end of the left support shaft 25 provided at the upper end of the chaflip plate 19a having the pin portion 33. It has been extended.

On the lateral outer side of the left side wall 26 of the sheave case main body 9A, when automatically adjusting the opening degree of the chaff sheave 19 in accordance with the amount of processed material on the chaff sheave 19, the minimum opening degree and the maximum An operation lever 36 for setting the degree of opening is provided, and this operation lever 36 is pivotally connected to a fulcrum shaft 35 so as to be swingable around its axis X, and the axis of the fulcrum shaft is provided. Core X
Are formed in an arc-shaped long hole 37 centered on the
The pin portion 33 is inserted through. Then, the operation lever 36
Above the elongated hole 37 and the chaflip plate 1
A coil spring 30 that elastically urges the above-described chief sheave 19 to the closed side over a pin portion attached to the free end of the coil 9a.
a. That is, the operation lever 36 allows the movement of the pin 33 in accordance with the opening / closing operation of the chief sheave 19, and swings around the axis X to open / close the chief sheave 19 via the coil spring 30a. Has become.

By operating the operating lever 36 rearward, the minimum opening of the chaff sheave 19 can be increased. By operating the operating lever 36 forward, the chief sheave 19 can be operated. 19 can be reduced.
The opening range of the chief sheave 19 by the operation lever 36 can be set and changed in six steps, and the operation lever 36 is held at the set position by engagement with the engagement pins 38 provided at each set position. The setting can be changed by releasing the engagement with the engagement pin 38 and performing a swing operation.

As shown in FIG. 2, the coil spring 30a is connected to the operating lever 3 via an adjuster 39 formed of a bolt which is screwed to the operating lever 36 so as to be able to move back and forth.
6 by the operation of the adjuster 39.
9, the urging force of the coil spring 30a at each minimum opening degree can be changed.

As shown in FIGS. 4 and 5, the chaff sheave 1
9 has an extension 4 extending rearward from the fulcrum shaft 35.
In a state having 0, a self-weight oscillation prevention member 41 constituted by a balance weight 41a integrally and swingably connected to the chaflip plate 19a having the pin portion 33 via the pin portion 33 and the fulcrum shaft 35 is provided. When the sheave case 9 is driven to swing, the chaff sheave 19 is opened and closed by its own weight irrespective of the weight of the processed material, and the processed material on the chief sheave 19 is opened and closed by the opening and closing operation. It is possible to prevent the inconvenience of being repelled and the inconvenience of unnecessarily leaking, thereby reducing the sorting accuracy and the sorting efficiency.

[Second Embodiment] FIG. 7 shows a sheave case 9
Plate 19a of chaff sheave 19 to be equipped on
Is shown, and each chaflip plate 19a is integrally formed from a synthetic resin. At the lower end (the straw rack 22 side) of the processed material transported by the chaff sheave 19 at the upper end of each chaflip plate 19a, the metal rod 3
A round bar 31a, which is one example, is insert-molded over the entire width in the longitudinal direction of the chaflip plate 19a.

That is, the chaflip plate 19 made of synthetic resin
A metal rod 31 is insert-molded and fixedly fitted in the upper end of a in a state extending over the entire width in the longitudinal direction, and the rod 31 protrudes from both ends in the longitudinal direction of the chaflip plate 19a. The part is a chaflip plate 19a
And a support shaft 25 provided at the upper end of the support plate 25. The support shaft 25 is rotatably supported by a fixed plate 27 so that the chaflip plate 19a can swing.

The other configuration is the same as that of the first embodiment. Components having the same configuration or the same function as the components described in the first embodiment are denoted by the same reference numerals and description thereof is omitted. .

[Other Embodiments] In each of the above embodiments, the group of the chaff flip plates 19a extending in the front-rear direction of the chaff sheave 19 is interlocked around the axis X of the lateral support shaft 25 provided at each upper end thereof. Although the opening of the chief sheave 19 can be adjusted by being movably connected, the chaflip plate 1 in the first half of the chief sheave 19 is formed.
The group 9a is connected to a lateral support shaft 25 provided at each upper end thereof.
May be connected so as to be swingable about the axis X, and the chief sheave 19 in the front half thereof may be configured to be adjustable in opening. The urging means 30 may be constituted by a helical spring or the like. It is not always necessary to provide a structure for changing the opening range of the chaff sheave 19. That is, the operation lever 36
May not be provided. In this case, the urging means 30 is extended over the pin 33 and the left side wall 26 of the sheave case main body 9A.

[Brief description of the drawings]

FIG. 1 is a longitudinal left side view of a threshing apparatus.

FIG. 2 is an exploded explanatory view of a main part showing an automatic opening adjustment structure and an opening setting structure of a chaff sheave.

FIG. 3 is a perspective view of a chaflip plate.

FIG. 4 is a left side view of a main part of a sheave case showing an opening degree setting structure of a chaff sheave and a self-weight swing prevention member.

FIG. 5 is a cross-sectional plan view of a main part showing a structure for setting an opening degree of a chaff sheave.

FIG. 6 is a front sectional view of a main part showing a mounting structure of a chaflip plate.

FIG. 7 is a perspective view showing a second embodiment of the chaflip plate.

FIG. 8 is a perspective view of a conventional chaflip plate.

[Explanation of symbols]

 Reference Signs List 9 sheave case 19 chaff sheave 19a chaflip plate 25 lateral support shaft 30 urging means 31 rod-shaped body X axis core

Claims (2)

[Claims] 1. A structure in which a chief sheave provided in a sheave case is connected to a group of chaflip plates of a chief sheave so as to be able to swing freely around the axis of a lateral support shaft provided on each of the sheave cases so that the opening of the chief sheave can be adjusted. A sheave case structure of a threshing device, wherein each of the chaff flip plates is integrally formed from a synthetic resin, and a metal bar is fixed to the chaff flip plate in a state extending over its entire width in the longitudinal direction. A sheave case structure for a threshing apparatus, wherein portions of the body protruding laterally outward from both ends in the longitudinal direction of the chaflip plate are formed on the support shaft. 2. An apparatus according to claim 1, further comprising: an urging means for elastically urging the chief sheave toward a closing side, and wherein an opening degree of the chief sheave is changed by a weight of a processed material acting on the chief sheave. 2. A sheave case structure of the threshing apparatus according to 1.