JPH10155345A - Sheave case structure for threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the sheave case structure of a threshing device capable of reducing weight, facilitating manufacture and reducing a manufacture cost while obtaining high strength. SOLUTION: In this sheave case structure of the threshing device, a sheave case 6 is constituted by connecting the three resin molded items of a hollow frame-shaped front part coarse sorting body 6A for supporting a chaff sheave 16 so as to adjust an open degree, a rear part coarse sorting body 6B disposed to the rear part of the front part coarse sorting body 6A and a hollow frame- shaped shieve case main body 6C for externally surrounding both coarse sorting bodies 6A and 6B for which a fine sorting body 6D is integrally formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheave case structure of a threshing apparatus configured to sieve and sort a processed product from a threshing unit backward while transferring the same.

[0002]

2. Description of the Related Art Conventionally, in a sheave case, in order to obtain a high strength, most parts such as a sheave case main body, a Glenpan, a chaff sheave, and a straw rack provided in the sheave case main body are made of sheet metal.

[0003]

However, according to the above prior art, although high strength can be obtained,
Since most parts are made of sheet metal, there is a problem that the weight becomes heavy.In addition, it is necessary to attach parts such as Glen Pan to the sheave case body by welding, bolt connection, etc., and to perform rust prevention painting. Therefore, the inconvenience that the production is troublesome and the inconvenience that the production cost increases are caused.

[0004] The object of the present invention is to obtain high strength,
It is an object of the present invention to provide a sheave case structure of a threshing apparatus capable of reducing weight, facilitating production, and reducing manufacturing costs.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, in a sheave case structure of a threshing apparatus, a hollow frame for supporting a chaff sheave so as to be able to adjust an opening degree. A front coarse sorting body, a rear coarse sorting body provided behind the front rough sorting body, and a hollow frame-shaped sheave surrounding both the coarse sorting bodies and integrally formed with the fine sorting bodies. A sheave case was constructed by connecting the three resin molded products to the case body.

According to the first aspect of the present invention, the sheave case is made of a sheet metal material because the front roughly sorted body, the rear roughly sorted body, and the sheave case body constituting the sheave case are resin molded products. Compared with the case, the sheave case can be reduced in weight and the manufacturing cost can be reduced.
In addition, since it is not necessary to apply rust-preventive coating to these resin molded articles as in the case of sheet metal material, labor for rust-preventive coating can be omitted and coating cost can be reduced. In addition, of the parts for rough sorting arranged in a state of being connected to the upper side of the sheave case body in the front-rear direction (transfer direction of the processed material), the parts arranged in the first half of the sheave case body (generally, Is a front rough sorter that is a resin molded product integrally formed with two Glen pans arranged before and after the opening-adjustable chaff sheave, and each component (generally, arranged in the rear half of the sheave case body) Is a rear roughly sorted body that is a resin molded product in which a fixed type chaff sheave and straw rack are integrally formed, and a carefully sorted body (generally, a grain pan for fine sorting, The sheave case can be configured by coupling with a sheave case main body, which is a resin molded product integrally formed with the sheave case arranged in a state of being connected to the main body. And the components for selective alternative in comparison with the case of constituting the sieve casing by assembling in welding or bolted, so the sieve casing can be easily manufactured. In addition, the front roughly sorted body, the rear roughly sorted body, and the sheave case main body can be reinforced by integrally forming each part belonging thereto, and the front roughly sorted body, the rear roughly sorted body, And, when connecting the sheave case main body, since the sheave case main body surrounds the front coarsely sorted body and the rear coarsely sorted body arranged in front and rear,
The sheave case can be reinforced as a whole.

Therefore, while obtaining high strength, weight reduction,
It has become possible to provide a sheave case structure of a threshing apparatus which can facilitate manufacture and reduce manufacturing costs.

According to the second aspect of the present invention,
In the invention according to claim 1, the rear part of the front coarsely separated body and the front part of the rear coarsely separated body are superimposed and connected together to the sheave case main body.

According to the second aspect of the present invention, the rear part of the front coarsely sorted body and the front part of the rear coarsely separated body are polymerized, and the overlap portion is formed between the front coarsely sorted body and the rear coarsely sorted body. Is connected to the sheave case body surrounding the
The front roughly sorted body, the rear roughly sorted body, and the sheave case body can have the stress applied to the front and rear middle part of the sheave case, which is the connection point between the front roughly sorted body and the rear roughly sorted body. Become. In other words, when the front roughly sorted body and the rear roughly sorted body are connected to the sheave case body surrounding them, in a state where the front part of the front roughly sorted body and the rear part of the rear roughly sorted body are not polymerized. Is because only the sheave case main body has the stress applied to the front and rear middle part of the sheave case, which is the connection point between the front coarsely sorted body and the rear coarsely sorted body, so that the reinforcing structure that can withstand the stress ( Increase in thickness or formation of reinforcing ribs) on the sheave case body, which results in an increase in the size or complexity of the sheave case body.
In addition, inconveniences such as an increase in manufacturing cost occur. However, according to the invention described in claim 2, a high strength capable of withstanding stress applied to front and rear intermediate portions of the sheave case without applying a reinforcing structure to the sheave case body is provided. As a result, those disadvantages can be avoided.

Accordingly, it is possible to provide a sheave case structure of a threshing apparatus capable of obtaining higher strength while avoiding inconveniences such as an increase in the size or complexity of the sheave case body and an increase in manufacturing cost. .

[0011] In the invention according to claim 3 of the present invention,
In the invention according to claim 1 or 2, a straw rack acting on a processed material from a dust outlet is integrally formed at a rear end portion of the front roughly sorted body.

According to the third aspect of the present invention, since the straw rack acting on the processed material from the dust outlet is formed integrally with the rear end of the front rough sorting body, the straw rack is front roughly sorted. It is easier to manufacture as compared with a structure that is formed separately from the body and connected to the rear end of the front coarsely sorted body with bolts or the like. It is also conceivable that the straw rack is formed integrally with the rear coarsely sorted body, but since the straw rack acts on the processed material from the dust outlet, the straw rack is formed on the front side of the rear coarsely sorted body. Since they are arranged in parallel above the integrally formed rough sorting parts (generally, fixed chaff sheaves), there is a disadvantage that the molds for integrally forming are complicated and the manufacturing cost is increased. Become like In other words, by integrally forming the straw rack acting on the processed material from the dust outlet at the rear end of the front rough sorting body, it is possible to avoid the disadvantage of increasing the manufacturing cost,
The production can be further facilitated.

Accordingly, it has been possible to provide a sheave case structure of a threshing apparatus which can further facilitate the production while avoiding the disadvantage of increasing the production cost.

According to the fourth aspect of the present invention,
The invention according to any one of claims 1 to 3, wherein a rear end of the sheave case main body is provided with a mounting portion that is mounted on a crank mechanism that swings and drives the sheave case, and Ribs along the front-rear direction are integrally formed vertically on the left and right outer surfaces of the sheave case body,
A reinforcing plate having a rear end connected to the mounting portion was fitted and fixed between the ribs.

According to the fourth aspect of the present invention, the left and right side walls of the sheave case main body that are elongated in the front-rear direction by surrounding the front roughly sorted body and the rear roughly sorted body arranged in front and rear,
It can be reinforced by the upper and lower ribs and the reinforcing plate. Also,
The mounting part attached to the crank mechanism that swings the sheave case is connected to the reinforcing plate, and the reinforcing plate is fitted and fixed between the upper and lower ribs integrally formed on the outer surfaces of the left and right side walls. Therefore, the stress (particularly shearing or torsional stress) acting on the left and right side walls of the sheave case main body when the sheave case is driven to swing can be imparted to the reinforcing plate and the upper and lower ribs.

Accordingly, it is possible to provide a sheave case structure of a threshing apparatus capable of further increasing the strength of the sheave case and further improving the durability.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a vertical left side view of a threshing device mounted on a combine. The threshing device is a harvesting grain that is pinched and conveyed in a horizontal position by a feed chain 1 provided on the left side thereof. A threshing unit A that performs threshing on the tip side of the culm, a sorting unit B that performs a sorting process on the processed product from the threshing unit A, and a first one of the processed products sorted by the sorting unit B It is constituted by a collection section C for collecting a product and a second product.

The threshing unit A includes a handle drum 2 that is driven to rotate around a longitudinal axis P1, a receiving net 3 provided below the handling drum 2, and a dust outlet formed behind the receiving net 3. And the like. The kernel is separated from the harvested culm which is pinched and conveyed by the feed chain 1, and the single-grained kernels and broken straws are leaked from the receiving net 3. Grains and broken straw that have not leaked are discharged from the dust outlet 4.

The sorting section B includes a sheave case 6 and a sheave case 6 disposed below the receiving net 3 in a state where both sides of the front portion are suspended and supported by a support arm 5 which can swing back and forth (see FIG. 2). The sheave case 6 is oscillated by the operation of a crank mechanism 8 mounted on the rear part thereof, so that the processed material from the threshing unit A is formed. In addition to performing sieving and sorting, Karamin 7 supplies a sifting wind toward the sieve case 6, thereby adding wind sorting to the processed material sieved and sorted by the sieve case 6. By these sorting operations, the processed material from the threshing unit A is divided into a grain as a first thing, a mixture as a second thing composed of a grain and a cut straw, and a cut straw as a third thing. And so on.

The collecting section C is provided below the sheave case 6 behind the Karamin 7 and the first article collecting section 9 below the sheave case 6 and provided behind the first article collecting section 9. It is constituted by a goods collection unit 10 and the like. The first thing collecting part 9 collects the first thing among the processed materials sorted by the sorting part B, and transfers the collected first thing to the first screw disposed at the bottom thereof in the left-right direction. By 11, it is configured to be conveyed toward a lifting screw 12 connected to the right end thereof. Second collection unit 10
Collects the second thing of the processed material sorted and sorted by the sorting unit B, and collects the collected second thing by the second screw 13 arranged left and right at the bottom thereof.
It is configured to be conveyed toward a second reduction screw 14 connected to the right end thereof. The lifting screw 12 lifts the first thing conveyed by the first screw 11 and supplies it from above to a storage unit (not shown) juxtaposed on the right side of the threshing device. It is configured. The second reduction screw 14 is configured to return the second product transported by the second screw 13 to the sheave case 6.

As shown in FIG. 2 and FIG. 3, the sheave case 6 includes a front roughly sorted body 6A having a hollow frame shape, a rear roughly sorted body 6B provided behind the front roughly sorted body 6A, It is configured by bolting a hollow frame-shaped sheave case body 6C that surrounds both of the coarsely sorted bodies 6A and 6B. The front coarsely sorted body 6A is in a state in which the first Glen pan 15 and the second Glen pan 17 are separated from each other by a predetermined distance in the front and rear,
Further, the first straw rack (corresponding to the straw rack according to claim 3) 18 is a resin molded product integrally formed so as to extend rearward from the upper surface of the second Glen pan 17, and the first straw pan 15 Between the second Glen pan 17, a first chaff sheave (corresponding to the chaff sheave of claim 1) 16 is supported so as to be adjustable in opening. The first chaff sheave 16 is movably constituted by a plurality of resin-molded chaff flip plates 16A which are arranged side by side in the front-rear direction and are linked so as to be able to swing back and forth. The rear roughly sorted body 6B is a resin molded product in which a fixed second chaff sheave 19 and a second straw rack 20 are integrally formed in a state of being connected to the front and rear. The sheave case main body 6C is a resin molded product in which a third Glen pan 21 and a Glen sheave 22 constituting a finely sorted body 6D are integrally formed in a lower part thereof in a state of being connected back and forth. Then, in a state in which the front roughly sorted body 6A to which the first chief sheave 16 is attached, the rear roughly sorted body 6B, and the sheave case main body 6C are bolted together, the first Glen pan 15 and the first chaff sheave 16 are provided above the sheave case 6. , The second Glen bread 17,
Second chaff sheave 19 and second straw rack 2
0 is located in a state of being connected in that order from the front, and the third Glen pan 21
And the Glen Sheave 22 are located in a state of being connected back and forth.

According to the above-described positional relationship, the first Glen pan 15 receives the processed material leaked from the front side of the receiving net 3 and transfers the processed material rearward while sorting by specific gravity difference. The first chaff sheave 16 coarsely sorts the grains and the like out of the processed material leaked from the rear side of the receiving net 3 and the processed material transferred by the first Glen pan 15 and leaks the remaining processed material. It is designed to be transported backward. The first straw rack 18 sieves and sorts grains and the like out of the processed material supplied from the dust outlet 4 and transfers the remaining processed material rearward. The second Glen pan 17 is configured to transfer the processed material that has leaked from the first straw rack 18 rearward while sorting by specific gravity. 2nd chaff sieve 1
9 coarsely sorts grains and the like from the processed material transferred by the second Glen pan 17 and the processed material passed through the first straw rack 18, leaks them to the second product recovery unit 10, and performs the remaining processing. Objects are to be transported backward. The second straw rack 20 is the second chaff sheave 1
Grains and the like are sieved and sorted out of the processed material transferred by 9 and leaked to the second product recovery unit 10, and the remaining processed material is transferred backward and discharged outside the machine. ing. The third Glen bread 21 is the first chaff sieve 16
The material that has leaked from the container is transported rearward while being sorted by specific gravity. The grain sieve 22 carefully sorts the kernels from the processed material transferred by the third Glen pan 21 and the processed material supplied from the first chaff sieve 16, causes the kernel to leak to the first product recovery unit 9, and removes the remaining processed material. It is designed to be transported backward.

In summary, since the front roughly sorted body 6A, the rear roughly sorted body 6B, and the sheave case body 6C that constitute the sheave case 6 are resin molded products, the case in which the sheave case 6 is made of a sheet metal material. As a result, the sheave case 6 can be made lighter and the manufacturing cost can be reduced. In addition, since it is not necessary to apply rust-preventive coating to these resin molded products as in the case of sheet metal material, it is possible to save the trouble of rust-preventive coating and to reduce the coating cost. Moreover, the front coarsely sorted body 6A is composed of the first Glen pan 15, the second Glen pan 17, and the first straw rack 1
8 are integrally formed, and the rear roughly sorted body 6B includes a second chaff sheave 19 and a second straw rack 20.
Are integrally formed, and the sheave case main body 6C is formed by integrally forming the third Glen pan 21 and the Glen sheave 22, so that these components are welded or bolted to the sheave case main body 6C. The sheave case 6 can be easily manufactured as compared with the case of assembling. In addition, the front rough sorting body 6A, the rear rough sorting body 6B, and the sheave case main body 6C can be reinforced by integrally forming the respective parts belonging thereto, and the front rough sorting body 6A, the rear part When connecting the coarsely sorted body 6B and the sheave case body 6C, the sheave case body 6C surrounds the front coarsely sorted body 6A and the rear coarsely sorted body 6B which are arranged in front and rear. The case 6 can be reinforced as a whole.

The connection of the front roughly sorted body 6A, the rear roughly sorted body 6B, and the sheave case body 6C will be described in detail. As shown in FIGS. 2 to 4, the front roughly sorted body 6A and the rear roughly sorted body 6B are shown. Are the left and right side walls 6 in the front rough sorting body 6A.
a and the front portions of the left and right side walls 6b of the rear roughly sorted body 6B are arranged back and forth in a superimposed state.
Are jointly fastened to the left and right side walls 6c of the sheave case main body 6C surrounding the front coarse sorting body 6A and the rear coarse sorting body 6B. Thus, the front rough sorting body 6A
The front roughly sorted body 6A, the rear roughly sorted body 6B, and the sheave case body 6C can apply the stress applied to the front and rear middle portion of the sheave case 6 which is the connection point between the rear roughly sorted body 6B and the sheave case 6B. Has become. In other words, when the rear part of the front coarse sorting body 6A and the front part of the rear coarse sorting body 6B are individually connected to the sheave case main body 6C without overlapping, the front rough sorting body 6A and the rear coarse sorting body 6B Since only the sheave case body 6 </ b> C has the stress applied to the front and rear intermediate portions of the sheave case 6, which is the connection point, a reinforcement structure (increase in thickness and formation of reinforcement ribs) that can withstand the stress is provided. The sheave case body 6C needs to be applied to the sheave case body 6C, and the sheave case body 6C becomes large or complicated, and the manufacturing cost increases. However, when the sheave case body 6C is connected as described above, It is possible to obtain a high strength that can withstand the stress applied to the front and rear intermediate portions of the sheave case 6 without providing a reinforcing structure, and thus the sheave case body 6C becomes large or complicated.
In addition, inconveniences such as an increase in manufacturing cost can be avoided.

As shown in FIGS. 2 to 4, at the rear end of the sheave case main body 6C, a mounting portion 23 which is mounted on the crank mechanism 8 for driving the sheave case 6 to swing is connected and provided. The mounting portion 23 is configured to rotatably surround the eccentric cam 8A of the crank mechanism 8 via a sleeve 24. The mounting portion 23 is made of resin or aluminum formed by resin molding or aluminum die casting in order to reduce the weight. On each outer side surface of the left and right side walls 6c in the sheave case body 6C,
A rib a along the front-rear direction is integrally formed vertically. A reinforcing plate 25 made of a resin material or a sheet metal material is fitted between the upper and lower ribs a on the left and right side walls 6c. The front end of the reinforcing plate 25 has a rough front sorting body 6.
A and the rear roughly sorted body 6B and the sheave case body 6C are jointly fastened to each other, and the rear end is fixed to the rear roughly sorted body 6B and the mounting portion 23 and the sheave case body 6C together by fastening. In other words, the left and right side walls 6c of the sheave case main body 6C, which are elongated in the front-rear direction because they surround the front coarse sorting body 6A and the rear coarse sorting body 6B arranged in front and rear, are formed by the upper and lower ribs a and the reinforcing plate 25. It is designed to be reinforced. Further, due to this reinforcement, stress (particularly, shearing or torsional stress) acting on the left and right side walls 6c of the sheave case main body 6C when the sheave case 6 is driven to swing is also given to the reinforcing plate 25 and the upper and lower ribs a. It can be made to be.

With the above configuration, the sheave case 6 can be made lighter, easier to manufacture, and lower in manufacturing cost, and its strength can be increased to improve durability. .

[Brief description of the drawings]

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

FIG. 2 is a longitudinal left side view showing a configuration of a sheave case.

FIG. 3 is an exploded perspective view showing a configuration of a sheave case.

FIG. 4 is a longitudinal sectional front view of a main part showing a reinforcing structure of a sheave case.

[Explanation of symbols]

 Reference Signs List 4 Dust port 6 Sheave case 6A Rough sorting body at front 6B Rough sorting body at rear 6C Sheave case body 6D Fine sorting body 8 Crank mechanism 16 Chaff sheave 18 Straw rack 23 Mounting part 25 Reinforcement plate a Rib

Claims (4)

[Claims] 1. A hollow roughly frame-shaped front roughly sorted body that supports a chaff sheave so as to be adjustable in opening, a rear roughly sorted body disposed behind the front roughly sorted body, and both of these roughly sorted bodies. A sheave case structure of a threshing device in which a sheave case is formed by connecting three resin molded products to a sheave case main body having a hollow frame shape integrally formed with an outer periphery and a fine selection body integrally formed. 2. The sheave case structure of a threshing apparatus according to claim 1, wherein a rear portion of the front coarsely sorted body and a front portion of the rear roughly sorted body are overlapped and connected to the sheave case body together. 3. The sheave case structure of a threshing apparatus according to claim 1, wherein a straw rack acting on a processed material from a dust port is integrally formed at a rear end portion of the front roughly sorted body. 4. A rear end portion of the sheave case main body is provided with a mounting portion that is mounted on a crank mechanism that swings and drives the sheave case, and extends along the left and right outer surfaces of the sheave case main body in the front-rear direction. The threshing apparatus according to any one of claims 1 to 3, wherein the ribs are integrally formed up and down, and a reinforcing plate having a rear end connected to the mounting portion is fitted and fixed between the ribs. Sheave case structure.