WO2022124021A1

WO2022124021A1 - Combine harvester

Info

Publication number: WO2022124021A1
Application number: PCT/JP2021/041994
Authority: WO
Inventors: 小林宜泰; 熊谷雅行
Original assignee: 株式会社クボタ
Priority date: 2020-12-08
Filing date: 2021-11-16
Publication date: 2022-06-16
Also published as: JP2022091004A; JP7423499B2

Abstract

This combine harvester is provided with: a threshing device 8 having a threshing unit 12 that threshes reaped grain culms and a sorting unit 13 that is disposed below the threshing unit 12 and sorts grain obtained by threshing the reaped grain culms by the threshing unit 12; a second product returning unit 24 that is disposed side by side with the threshing device 8 and returns a second product sorted by the sorting unit 13 to the sorting unit 13; an opening that is formed in a side wall 25 of the threshing unit 12 on the side where the second product returning device 24 is located, and allows the second product from the second product returning device 24 to pass therethrough; and a guide member 29 that guides the second product from the second product returning device 24 to the opening. The guide member 29 has a removable part P that is partially removable.

Description

combine

The present invention relates to a combine.

Conventionally, as a combine, for example, the combine described in Patent Document 1 is known.
The combine described in Patent Document 1 has a threshing section for threshing the harvested grain (“handling barrel [24], etc.” in the document) and a threshing section below the threshing section, and the threshing section threshes the harvested grain. A threshing device (“threshing device [4]” in the literature) having a sorting unit (“sorting unit [26]” in the literature) for sorting the grains obtained in 1) is provided.

Japanese Unexamined Patent Publication No. 2010-263854

The combine described in Patent Document 1 has room for improvement in that the inside of the threshing section can be easily accessed when the inside of the threshing section is maintained.

In view of the above situation, there is a demand for a combine that can easily maintain the inside of the threshing section.

The features of the present invention are a threshing section for threshing the harvested grain sill and a sorting section provided below the threshing section for the threshing section to sort the grains obtained by threshing the harvested grain sill. A threshing device having a threshing device, a second reduction device provided next to the threshing device and reducing the second product selected by the sorting section to the sorting section, and the second reduction device in the threshing section are located. It is provided with an opening formed on the lateral side wall on the side through which the second object from the second reduction device passes, and a guide member for guiding the second object from the second reduction device toward the opening. The guide member has a partially removable removable portion.

According to this feature configuration, the inside of the guide member is opened by removing the detachable part. This makes it possible to easily perform maintenance inside the threshing portion from the outside of the guide member via the opening. That is, according to this characteristic configuration, it is possible to realize a combine that can easily maintain the inside of the threshing portion.

Here, the work space is narrow because there are many other members around the threshing device. According to this feature configuration, by partially attaching and detaching the guide member, it is easy to attach and detach the detachable portion even when the work space around the threshing device is narrow.

Further, in the present invention, it is preferable that the detachable portion is a portion of the guide member facing the opening.

According to this feature configuration, the opening is exposed to the outside of the guide member by removing the detachable part. This makes it easy to reach the opening from the outside of the guide member.

Further, in the present invention, it is preferable that the detachable portion is a side wall of the guide member located laterally to the opening.

Here, in the guide member, the side wall is a part having a relatively large area than other parts. According to this feature configuration, the inside of the guide member is greatly opened by removing the side wall. This makes it possible to more easily maintain the inside of the threshing portion from the outside of the guide member via the opening.

Further, in the present invention, it is preferable that the side wall is made of a flat plate-shaped member.

According to this feature configuration, the side wall is composed of members with a simple shape. This facilitates the work of attaching and detaching the side wall.

Further, in the present invention, it is preferable that the guide member has a receiving surface portion that receives the side wall in a surface contact state.

According to this feature configuration, the side wall can be received in a surface contact state with the receiving surface portion. This allows the side wall to be firmly supported.

Further, in the present invention, it is preferable that the side wall is fixed to the receiving surface portion.

According to this feature configuration, the side wall is received by the receiving surface portion in a surface contact state and is fixed to the receiving surface portion. As a result, it is possible to improve the fixing strength of the side wall and prevent a gap from being generated between the side wall and the receiving surface portion.

Further, in the present invention, a bifurcated first locking portion is provided on either one of the edge portion of the detachable portion and the peripheral member located around the detachable portion, and the edge portion of the detachable portion and the peripheral member are provided. A second locking portion sandwiched between the first locking portions is provided on any one of the peripheral members, and the second locking portion is sandwiched between the first locking portions and locked. Therefore, it is preferable that the detachable portion is attached to the peripheral member.

According to this feature configuration, the detachable portion is attached to the peripheral member in a state where the second locking portion is sandwiched between the first locking portions and locked. As a result, the detachable portion does not easily come off from the surrounding member.

Further, in the present invention, the peripheral member is provided with a bolt protruding toward the detachable portion, a bolt hole through which the bolt is inserted is formed in the detachable portion, and the detachable portion is formed in the bolt hole. It is preferable that the bolt is inserted and fixed by a nut.

According to this feature configuration, when attaching the detachable portion to the peripheral member, the operator holds the detachable portion and inserts the bolt into the bolt hole, and then the operator holds the detachable portion while being supported by the bolt. The detachable part may be fixed with a nut. Further, when removing the detachable portion from the peripheral member, the operator may remove the nut from the bolt while the detachable portion is supported by the bolt, and then the operator may hold the detachable portion and pull it out from the bolt. In this way, the fixing work with the nut and the removing work of the nut can be performed in a state where the attached / detached portion is stable.

It is a left side view which shows a combine. It is a top view which shows a combine. It is a left side view which shows the inside of a threshing apparatus. It is a right side view which shows the threshing apparatus. It is a top view which shows the guide member. It is a perspective view which shows the guide member. It is an exploded right side view which shows the guide member. FIG. 4 is a cross-sectional view taken along the line VIII-VIII in FIG. It is a right side view which shows the detachable part schematically. It is a front sectional view schematically showing a detachable part. It is a right side view schematically showing the detachable part which concerns on the 1st another embodiment. It is a right side view schematically showing the detachable part which concerns on the 2nd another embodiment. It is a front sectional view schematically showing the detachable part which concerns on the 2nd another embodiment. It is a front sectional view schematically showing the detachable part which concerns on the 3rd alternative embodiment. It is a right side view schematically showing the detachable part which concerns on the 4th another embodiment. It is a front sectional view schematically showing the detachable part which concerns on 4th another embodiment. It is a right side view schematically showing the detachable part which concerns on the 5th another embodiment. It is a front sectional view schematically showing the detachable part which concerns on the 5th another embodiment. It is a right side view schematically showing the detachable part which concerns on the 6th another embodiment. It is a front sectional view schematically showing the detachable part which concerns on the 6th another embodiment.

The embodiment for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F is the "front side of the aircraft", the direction of the arrow B is the "rear side of the aircraft", the direction of the arrow L is the "left side of the aircraft", and the direction of the arrow R is the "right side of the aircraft".

[Overall composition of combine harvester]
1 and 2 show a full-culm-loaded combine (corresponding to the “combine” according to the present invention). The combine is provided with a traveling machine body 1. The traveling machine body 1 is provided with a machine body frame 2 and a crawler traveling device 3. In front of the traveling machine 1, a cutting section 4 for cutting planted culms is provided. The cutting unit 4 is provided with a scraping reel 5 for scraping the planted culm, a cutting blade 6 for cutting the planted culm, and a scraping auger 7 for scraping the harvested culm.

A threshing device 8 for threshing all the cut culms is provided. A feeder 9 for transporting the harvested culm toward the threshing device 8 is provided across the cutting section 4 and the threshing device 8. On the right side of the threshing device 8, a grain tank 10 for storing grains obtained by the threshing process is provided side by side with the threshing device 8. The grain tank 10 is configured to be swingable and openable around a swing axis Z1 extending in the vertical direction. A grain discharge device 11 for discharging grains in the grain tank 10 is provided. An operation unit D is provided in front of the grain tank 10.

[Threshing device]
As shown in FIGS. 3 and 4, the threshing device 8 is provided with a threshing section 12 for threshing the harvested grain culm and a threshing section 12 below the threshing section 12, which is obtained by threshing the harvested grain culm. A sorting unit 13 for sorting the threshing grains is provided. The threshing section 12 includes a handling cylinder 14 that can rotate around a rotation axis Y1 extending along the front-rear direction of the machine, a handling chamber 15 provided with the handling cylinder 14, and a receiving net 16 that leaks the threshed material. Is provided.

The handling cylinder 14 is provided with a conical trapezoidal scraping portion 14A provided at the front end portion of the handling cylinder 14 and a handling processing portion 14B continuously provided at the rear end portion of the scraping portion 14A. .. The scraping portion 14A is provided with a spiral blade 14Aa for scraping the cut grain culm. The handling processing unit 14B includes a front plate 14Ba, a rear plate 14Bb, a plurality of rod-shaped members 14Bc provided over the front plate 14Ba and the rear plate 14Bb, and a large number of handling teeth 14Bd attached to each rod-shaped member 14Bc. And are provided.

The sorting unit 13 includes a rocking sorting device 17 that swings and sorts the threshed product, a wall insert 18 that blows sorting air to the threshed product, and the first that collects the first product (single grain, etc.). A collection unit 19 and a second collection unit 20 for collecting a second product (grains with branch stems, etc.) are provided. The first collection unit 19 is provided with the most horizontal screw 21 for transporting the first object to the right. The second collection unit 20 is provided with a second horizontal screw 22 for transporting the second object to the right.

Next to the threshing device 8 (next to the right), the first vertical transport device 23 for transporting the first product sorted by the sorting unit 13 toward the grain tank 10 and the second sorting unit 13 for sorting. A second reduction device 24 for reducing the product to the sorting unit 13 is provided. The second reduction device 24 is configured to extend along the vertical direction. The first item from the most horizontal screw 21 is conveyed upward by the most vertical transfer device 23 and stored in the grain tank 10. The second product from the second horizontal screw 22 is conveyed upward by the second reduction device 24, discharged from the transfer end portion of the second reduction device 24, and reduced to the front portion of the swing sorting device 17. It will be.

On the right side of the threshing section 12, a right side wall 25 (corresponding to the "horizontal side wall" according to the present invention), an upper frame 26, a lower frame 27, and a vertical frame 28 are provided. The upper edge of the right side wall 25 is supported by the upper frame 26. The lower edge of the right side wall 25 is supported by the lower frame 27. The vertical frame 28 extends in the vertical direction over the upper edge portion of the right side wall 25 and the lower edge portion of the right side wall 25.

On the lateral side wall (right side wall 25) on the side of the threshing section 12 on which the second reduction device 24 is located, the opening 25a through which the second item from the second reduction device 24 passes (the "opening" according to the present invention). Equivalent) is formed. The opening 25a is formed in a substantially rectangular shape (specifically, a rectangular shape long in the front-rear direction) in a side view, and overlaps with the most vertical transport device 23.

The opening 25a is formed in a portion of the right side wall 25 adjacent to the front portion of the handling cylinder 14. Specifically, the opening 25a is formed in a portion of the right side wall 25 adjacent to the front portion of the handling processing portion 14B.

As shown in FIGS. 3 to 5, a guide member 29 for guiding the second object from the second reduction device 24 toward the opening 25a is provided. The guide member 29 is connected to the transport end portion and the opening 25a of the second reduction device 24. The guide member 29 is arranged in front of the transfer end portion of the second reduction device 24 in a state of overlapping with the most vertical transfer device 23 in the side view.

A vertical wall 30 is provided between the transport end portion of the second reduction device 24 and the guide member 29. The vertical wall 30 extends in the vertical direction over the upper edge portion of the right side wall 25 and the lower edge portion of the right side wall 25. The vertical wall 30 is supported by the right side wall 25 in a state of projecting from the right side wall 25 toward the right. The vertical wall 30 is formed with an opening 30a (see FIG. 8) for communicating and connecting the transfer end portion of the second reduction device 24 and the inside of the guide member 29. The transport end portion of the second reduction device 24 and the inside of the guide member 29 are communicated with each other via the opening 30a.

[Guide member]
As shown in FIGS. 5 to 8, the guide member 29 is formed in a shape protruding from the right side wall 25 to the side (right side) of the threshing portion 12. The guide member 29 is formed in a substantially rectangular shape (specifically, a rectangular shape long in the front-rear direction) when viewed from the side. The guide member 29 is fixed to the right side wall 25 and the vertical wall 30. The guide member 29 is provided with a main body portion 31 (corresponding to the “peripheral member” according to the present invention) and a side wall 32 (corresponding to the “detachable portion” and “side wall” according to the present invention). The main body portion 31 is provided with an upper surface portion 33, a first inclined surface portion 34 (corresponding to the “receiving surface portion” according to the present invention), and a second inclined surface portion 35.

The first inclined surface portion 34 is inclined so as to approach the right side wall 25 toward the front side in a plan view. The first inclined surface portion 34 is formed in a shape in which the vertical length of the first inclined surface portion 34 becomes larger toward the front side in a side view. Specifically, the first inclined surface portion 34 is formed in a substantially trapezoidal shape in which the front side is longer than the rear side in the side view. An opening 34a is formed in the first inclined surface portion 34.

The second inclined surface portion 35 is inclined downward to the left when viewed from the front. The second inclined surface portion 35 is formed in a shape in which the vertical length of the second inclined surface portion 35 becomes smaller toward the front side in a side view. Specifically, the second inclined surface portion 35 is formed in a substantially triangular shape having an inclined side inclined forward and downward in a side view.

The opening 34a is formed in a shape in which the vertical length of the opening 34a becomes larger toward the front side. Specifically, the opening 34a is formed in a substantially trapezoidal shape in which the front side is longer than the rear side in the side view. That is, the opening 34a is formed in a shape in which the opening area of the opening 34a becomes larger toward the front side.

The side wall 32 is located on the right side of the opening 25a and faces the opening 25a from the right side. That is, the side wall 32 is a side wall of the guide member 29 located laterally to the opening 25a, and is a portion of the guide member 29 facing the opening 25a.

The side wall 32 is composed of a flat plate-shaped member. The side wall 32 is formed in a shape in which the vertical length of the side wall 32 becomes larger toward the front side in a side view. Specifically, the side wall 32 is formed in a substantially trapezoidal shape in which the front side is longer than the rear side in the side view. That is, the side wall 32 is formed in substantially the same shape as the outer shape of the first inclined surface portion 34.

The guide member 29 has a side wall 32 as a partially removable portion P. The side wall 32 is detachably attached to the first inclined surface portion 34 in a state of being abutted from the right side so as to close the opening 34a from the right side. The first inclined surface portion 34 functions as a receiving surface portion S that receives the side wall 32 in a surface contact state.

In the first inclined surface portion 34, bolts 36 projecting toward the side wall 32 are provided on each of the upper edge portion, the leading edge portion, and the trailing edge portion. In the side wall 32, bolt holes 32a through which bolts 36 are inserted are formed in each of the upper edge portion, the leading edge portion, and the trailing edge portion. The side wall 32 is fixed by a nut 37 through which a bolt 36 is inserted into the bolt hole 32a. That is, the side wall 32 is received by the receiving surface portion S in a surface contact state and is fixed to the receiving surface portion S.

A bifurcated first locking portion 38 is formed on the lower edge of the side wall 32. A second locking portion 39 sandwiched between the first locking portions 38 is formed on the lower edge portion of the first inclined surface portion 34.

The first locking portion 38 is located between the front outer locking portion 38a, the rear outer locking portion 38a, the front outer locking portion 38a, and the rear outer locking portion 38a. An inner locking portion 38b and the like are provided. The front outer locking portion 38a and the rear outer locking portion 38a are located on the outer side of the guide member 29 with respect to the second locking portion 39. The inner locking portion 38b is located on the inner side of the guide member 29 with respect to the second locking portion 39. The second locking portion 39 is composed of a portion of the lower edge portion of the first inclined surface portion 34 along the lower edge of the opening 34a.

The outer locking portion 38a on the front side and the outer locking portion 38a on the rear side are aligned with the right side surface of the second locking portion 39, and the inner locking portion 38b is placed inside the guide member 29 from the lower edge of the opening 34a. The second locking portion 39 is sandwiched from both sides by the outer locking portion 38a on the front side, the outer locking portion 38a on the rear side, and the inner locking portion 38b. In this way, the second locking portion 39 is sandwiched between the first locking portions 38 and locked, so that the side wall 32 is attached to the first inclined surface portion 34.

[Another Embodiment]
(1) In the above embodiment, as shown in FIGS. 9 and 10, the detachable portion P is configured by the side wall 32, and the side wall 32 is received by the receiving surface portion S in a surface contact state. However, the present invention is not limited to the configuration according to the above embodiment.

For example, as shown in FIG. 11, the front side portion or the rear side portion of the side wall 32 may be detachably configured. In this case, the front side portion and the rear side portion of the side wall 32 may be configured to be detachable.

Alternatively, as shown in FIGS. 12 and 13, the side wall 32 may be provided only at a position corresponding to the lower portion of the first inclined surface portion 34.

Alternatively, as shown in FIG. 14, the upper edge portion and the lower edge portion of the side wall 32 are each bent in a shape, and the upper bent portion of the side wall 32 and the lower bent portion of the side wall 32 are the receiving surface portions S, respectively. It may be received in a face-to-face manner. In this case, the upper surface portion 33 and the second inclined surface portion 35 each function as a receiving surface portion S that receives the side wall 32 in a surface contact state.

Alternatively, as shown in FIGS. 15 and 16, even if the detachable portion P is configured by the lower wall 40 attached to the second inclined surface portion 35 and the lower wall 40 is received by the receiving surface portion S in a surface contact state. good. In this case, the opening 35a is formed in the second inclined surface portion 35. Further, the second inclined surface portion 35 functions as a receiving surface portion S that receives the lower wall 40 in a surface contact state.

Alternatively, as shown in FIGS. 17 and 18, the detachable portion P may be composed of the side wall 32 and the lower wall 40, and the side wall 32 and the lower wall 40 may be received by the receiving surface portion S in a surface contact state. In this case, the opening 31a is formed in the main body 31 over the first inclined surface portion 34 and the second inclined surface portion 35. Further, the first inclined surface portion 34 functions as a receiving surface portion S that receives the side wall 32 in a surface contact state, and the second inclined surface portion 35 functions as a receiving surface portion S that receives the lower wall 40 in a surface contact state.

Alternatively, as shown in FIGS. 19 and 20, the detachable portion P may be configured by the upper wall 41 attached to the upper surface portion 33, and the upper wall 41 may be received by the receiving surface portion S in a surface contact state. In this case, the opening 33a is formed in the upper surface portion 33. Further, the upper surface portion 33 functions as a receiving surface portion S that receives the upper wall 41 in a surface contact state.

(2) The configuration for attaching and detaching the side wall 32 is not limited to the configuration according to the above embodiment. For example, the configuration for attaching and detaching the side wall 32 may be such that the side wall 32 is slid (for example, slid in the front-rear direction or the vertical direction) to be attached and detached. Alternatively, the configuration in which the side wall 32 is attached / detached may be configured such that the side wall 32 is oscillated (for example, oscillated up / down or oscillated back and forth) to be attached / detached.

(3) In the above embodiment, the bifurcated first locking portion 38 is formed on the lower edge portion of the side wall 32, and is sandwiched between the first locking portions 38 on the lower edge portion of the first inclined surface portion 34. A second locking portion 39 is formed. However, a bifurcated first locking portion 38 is formed on any edge portion (one edge portion) of the side wall 32, and an edge portion corresponding to the one edge portion of the side wall 32 on the first inclined surface portion 34. If the second locking portion 39 is formed in the above embodiment, the configuration is not limited to the above embodiment. Alternatively, a bifurcated first locking portion (not shown) is formed on any edge portion (one edge portion) of the first inclined surface portion 34, and the one edge of the first inclined surface portion 34 on the side wall 32 is formed. A second locking portion (not shown) sandwiched between the first locking portions may be formed on the edge portion corresponding to the portion. In this case, the first locking portion may be formed on the lower edge portion of the first inclined surface portion 34, and the second locking portion may be formed on the lower edge portion of the side wall 32.

(4) In the above embodiment, the first locking portion 38 is formed in a bifurcated shape. However, the first locking portion 38 does not have to be formed in a bifurcated shape.

(5) In the above embodiment, the first inclined surface portion 34 is provided with a bolt 36 projecting toward the side wall 32, and the side wall 32 is formed with a bolt hole 32a through which the bolt 36 is inserted. However, the side wall 32 is provided with a bolt (not shown) protruding toward the first inclined surface portion 34, and the first inclined surface portion 34 is formed with a bolt hole (not shown) through which the bolt is inserted. You may.

(6) In the above embodiment, the "peripheral member" according to the present invention is composed of a main body 31. However, the "peripheral member" according to the present invention may be composed of the right side wall 25.

The present invention can be used for a head-feeding combine as well as a head-feeding combine.

8 Threshing device 12 Threshing section 13 Sorting section 24 Second reduction device 25 Right side wall (horizontal side wall)
25a Opening 29 Guide member 31 Main body (peripheral member)
32 Side wall (detachable part, side wall)
32a Bolt hole 36 Bolt 37 Nut 38 First locking part 39 Second locking part P Detachable part S Receiving surface part

Claims

A threshing device having a threshing section for threshing the harvested culm and a sorting section provided below the threshing section and the threshing section sorts grains obtained by threshing the harvested culm.
A second reduction device provided next to the threshing device and reducing the second product selected by the sorting unit to the sorting unit.
An opening formed in the lateral side wall of the threshing section on the side where the second reduction device is located and through which the second product from the second reduction device passes.
A guide member for guiding the second object from the second reduction device toward the opening is provided.
The guide member is a combine having a partially removable removable portion.
The combine according to claim 1, wherein the detachable portion is a portion of the guide member facing the opening.
The combine according to claim 2, wherein the detachable portion is a side wall of the guide member located laterally to the opening.
The combine according to claim 3, wherein the side wall is composed of a flat plate-shaped member.
The combine according to claim 4, wherein the guide member has a receiving surface portion that receives the side wall in a surface contact state.
The combine according to claim 5, wherein the side wall is fixed to the receiving surface portion.
A bifurcated first locking portion is provided on either the edge of the detachable portion or the peripheral member located around the detachable portion.
A second locking portion sandwiched between the first locking portions is provided on the edge of the detachable portion and any one of the peripheral members.
The combine according to any one of claims 1 to 6, wherein the detachable portion is attached to the peripheral member by sandwiching and locking the second locking portion between the first locking portions. ..
The peripheral member is provided with a bolt that protrudes toward the detachable portion.
A bolt hole through which the bolt is inserted is formed in the detachable portion.
The combine according to claim 7, wherein the detachable portion is a combine in which the bolt is inserted into the bolt hole and fixed by a nut.