JPH07241130A - Receiving net structure of axial flow type thresher - Google Patents

Abstract

PURPOSE:To improve threshing function in the inlet side of the clearance between a threshing drum lowering rotation part and receiving net lowering rotation part and a receiving net end part while smoothly introducing a threshed material rotating together with the threshing drum, in an axial type threshing apparatus arranging both end parts in the threshing drum circumferential direction of the receiving net in upper part than the rotating shaft center of the threshing drum and forming the clearance between the receiving net end part facing to lowering rotation part of the threshing drum among receiving net end parts and the threshing drum in a state gradually narrowing as closely approaches the threshing drum lowering rotation direction side. CONSTITUTION:A receiving net end part 4A facing to a threshing drum lowering rotation part 5A is arranged on the side of the threshing drum 5 to a vertical face S crossing with the lower end part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a net for dropping threshing material from a handling room to a sorting section in a state where both ends of the handling cylinder in the circumferential direction are positioned above the axis of rotation of the handling cylinder. , The clearance between the one of the receiving nets located above the axis of rotation of the handling cylinder facing the descending rotation part of the handling cylinder and the handling cylinder is gradually narrowed toward the direction of downward rotation of the handling cylinder. The present invention relates to a net-receiving structure for an axial-flow threshing device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, a net end 16 facing a descending rotating portion 5A of a handling cylinder 5 is formed in a vertical posture.
The distance between the vertical receiving net end 16 and the handling barrel 5 is gradually narrowed toward the downward rotation direction side of the handling barrel 5, and the processed object rotating with the handling barrel 5 is vertical to the receiving net end 16 and the handling barrel 5. It was configured to be smoothly introduced during the period.

[0003]

However, in the vertical receiving net end, the gap between the receiving net end and the handling cylinder becomes too wide on the inlet side, so that the inlet of the gap between the vertical receiving net end and the handling barrel is increased. The threshing function on the side became insufficient, and there was room for improvement in terms of improving threshing efficiency. An object of the present invention is to improve the threshing function on the inlet side of the clearance while smoothly introducing the processed material rotating with the handling cylinder into the clearance between the descending rotating portion of the handling cylinder and the end of the net.

[0004]

According to a first aspect of the present invention, there is provided a net for dropping threshing material from a handling chamber to a sorting section, the circumferential ends of the handling cylinder being out of the axis of rotation of the handling cylinder. It is provided in a state of being located above, and the clearance between the handling cylinder lowering part of the receiving net end located above the handling cylinder rotation axis and the one facing the descending rotation part of the handling cylinder is gradually increased toward the handling cylinder descending rotation direction side. In the axial flow type threshing device formed in a narrowed state, the net end facing the lowering part of the handling cylinder is arranged on the handling cylinder side with respect to the vertical plane intersecting the lower end.

In addition to the characteristic configuration of the first aspect of the present invention, the characteristic configuration of the second aspect of the present invention is such that the top plate portion adjacent to the receiving net end facing the downward rotating portion of the handling body is provided with the handling body. The reason is that the gap is formed in a curved surface of a substantially arc shape that gradually narrows toward the direction of rotation of the handle cylinder.

[0006]

According to the characteristic construction of the first aspect of the present invention, the net end facing the handle lowering and rotating portion is formed into a curved surface or a bent surface which is bent upward toward the handle cylinder, and the vertical end intersects with the lower end. By arranging on the handling cylinder side with respect to the surface, the gap between the handling cylinder descending rotation portion and the net end is gradually narrowed toward the handling cylinder descending rotation direction side, and the processed object that rotates with the handling cylinder is handled. While smoothly introducing into the gap between the descending rotating portion and the receiving net end, the inlet side dimension of the gap between the handling cylinder descending rotating portion and the receiving net end is sufficiently reduced compared to the above-mentioned conventional technique, It is possible to sufficiently improve the threshing function on the inlet side of the gap between the handling cylinder descending rotating portion and the net end portion.

Further, according to the characteristic constitution of the second invention, since the characteristic constitution of the first invention is basically provided, the processing object rotating together with the handling cylinder is placed in the gap between the descending rotating portion of the handling cylinder and the end of the net. It is possible to sufficiently improve the threshing function on the inlet side of the gap while smoothly introducing it. In addition, the top plate part adjacent to the net end facing the handle lowering rotation part is formed into a substantially arc-shaped curved surface consisting of a curved surface and a curved surface, and the gap between the top plate part and the handle cylinder is handled. Since the width is gradually narrowed toward the body rotation direction side, for example, as shown in FIG. 5, when the top plate 17 portion adjacent to the net receiving end portion 16 facing the descending rotation portion 5A of the handling cylinder 5 is formed into a flat surface. As described above, the threshing function can be further improved without generating the treated material accumulation in the top plate bending portion 18.

[0008]

As a result, it is possible to sufficiently improve the threshing function at the entrance side of the clearance while smoothly introducing the processed material rotating with the handling cylinder into the clearance between the descending and rotating portion of the handling cylinder and the receiving net end. It has become possible to provide a more excellent axial flow type threshing device for improving threshing efficiency.

[0009]

【Example】

(Embodiment 1) As shown in FIG. 1, in order to configure an axial flow type threshing device for a whole culm throw type combine, a handling room communicated with a feed conveyor 1 for supplying a cut culm from a reaping part on the left side of the figure. 2 is formed in the upper part of the case, and the sorting part 3 is provided below the handling chamber 2.
And a receiving net (concave) 4 for feeding grain from the handling room 2 to the sorting section 3 is provided over substantially the entire length of the handling room 2. A handling cylinder 5 is provided in the handling chamber 2 so as to be driven and rotatable about a front-rear horizontal axis P in a fixed direction, and spiral handling teeth 6a are attached to the outer peripheral surface of the handling cylinder 5 over the entire length and concentrically. The independent handle teeth 6b are attached at a predetermined pitch in the circumferential direction of the peripheral edge of the shaped handle tooth 6a, and the processed material that flows in the handle barrel circumferential direction as the handle barrel 5 rotates is placed behind the handle chamber 2 (on the right side in the drawing). The dust-sending valve 7 for guiding to is provided on the top plate 8 of the handling room.

The sorting section 3 is provided with a rocking sorting case 3a, a wind-picking Kara-no-oh 3b, a 1st item collecting screw conveyor 9 and a 2nd item collecting screw conveyor 10 for treating the products leaked and supplied from the receiving net 4. The swing sorting case 3a is used to swing backward to perform sifting and sorting with the wind from the Karako 3b, and the grains are sent from the No. 1 picking screw conveyor 9 to a grain tank (not shown). Then, the unsorted No. 2 product is returned to the front part of the swing sorting case 3a via the No. 2 product recovery screw conveyor 10 and the reducing device 8.

As shown in FIG. 2, in forming the receiving net 4,
Curved plate-shaped crosspieces 4a along the circumferential direction of the handling cylinder are arranged side by side in the axial direction of the handling cylinder, a round bar 4b extending in the axial direction of the handling cylinder is passed through the crosspiece 4a, and the receiving net 4 is placed on the handling cylinder. It is divided into two in the circumferential direction and three in the axial direction of the handling cylinder, and six receiving net units are arranged side by side. The receiving net 4 is provided with both ends 4A, 4 in the circumferential direction of the handling cylinder.
B is provided in a state of being positioned above the rotary shaft core P of the handling cylinder 5, and 4A of the receiving net end located above the rotary shaft core P that faces the descending rotating portion 5A of the handling cylinder 5 is the lower end thereof. The receiving net end 4A and the handling barrel 5 which are curved or formed in a polygonal shape so as to be arranged on the handling barrel 5 side with respect to the vertical plane S intersecting the section, and which face the handling barrel descending rotating portion 5A and the handling barrel 5. The gap of
It is formed so that it gradually narrows toward the direction in which the handling cylinder descends. That is, the gap between the handling cylinder descending rotation portion 5A and the net end 4A is gradually narrowed toward the handling cylinder descending rotation direction, and the handling cylinder 5
The processing object that rotates together with the handling cylinder lowering rotation portion 5A is smoothly introduced into the gap between the handling cylinder lowering rotation portion 5A and the netting end portion 4A. It is arranged on the handling cylinder 5 side with respect to the vertical plane S intersecting the section, and the size of the inlet side of the gap between the handling cylinder descending rotation portion 5A and the net end 4A is reduced so as to improve the threshing function. is there.

Receiving net end 4A facing the handle lowering rotating portion 5A
The lower end 8A of the top plate 8 adjacent to the upper end of the upper end of the net 8 is extended by the dimension L ₁ toward the handling cylinder 5 side, and the upper end of the net end 4B facing the rising rotating portion 5B of the handling cylinder 5 is adjacent to the top plate 8. The dimension L _{2 is} extended to the lower end portion 8B toward the handling cylinder 5 side so that a stepped portion on which the processed material is caught is not formed between the catching net 4 and the top plate 8 regardless of the assembling error of the top plate 8. Is configured.

As shown in FIGS. 2 and 3, the lower end portion of the receiving member 12 in which the strip plate is bent is welded to the rectangular or round pipe 11, and the plate-shaped reinforcing member 13 is welded to the entire upper surface of the receiving member 12. Then, the left and right upper end portions of the receiving member 12 and both ends of the pipe 11 are connected to the side plates 14 of the handling chamber 2 and the sorting unit 3, and the net-receiving unit is placed on the receiving member 12, and between the net-receiving units. The receiving net 4 is supported between the receiving net units in a state in which the reinforcing material 13 is put in. That is, the space 15 for the flow of the sorting air is formed between the receiving member 12 and the pipe 11 to suppress the flow turbulence of the sorting air and improve the air selection efficiency.

(Embodiment 2) As shown in FIG.
In the same axial flow type threshing device as described above, the top plate portion 8C adjacent to the net receiving end portion 4A facing the descending rotation portion 5A of the handling cylinder 5 is
The gap between it and the handling cylinder 5 is formed in a substantially arc-shaped curved surface, that is, a curved surface or a polygonal curved surface, which gradually narrows toward the rotation direction side of the handling cylinder 5. That is, similarly to the first embodiment, the processed material that rotates together with the handling cylinder 5 is smoothly introduced into the gap between the handling barrel descending rotating portion 5A and the net end 4A, and the threshing function on the inlet side of the gap is improved. Not only this, but further, the gap between the top plate portion 8C adjacent to the receiving net end 4A facing the handle lowering rotation part 5A and the handle cylinder 5 is gradually narrowed toward the handle rotation direction side, and the top plate is made. It is configured so that the treated material is not accumulated in the portion 8C and the threshing function is further improved.

[Other Embodiments] The structure and mounting structure of the receiving net 4 can be appropriately selected. There is no limitation on the usage form of the axial flow threshing device or the harvest target.

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 configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a threshing device mounted on an axial-flow combine.

FIG. 2 is a vertical sectional front view of a main part of a threshing device.

FIG. 3 is a front view of a receiving net support portion.

FIG. 4 is a vertical cross-sectional front view of a main part of the second embodiment.

FIG. 5 is a vertical sectional front view of a main part of a conventional example.

[Explanation of symbols]

 2 Handling room 3 Sorting section 4 Receptor nets 4A, 4B Receptor end 5 Handling cylinder 5A Handling cylinder descending rotating part 8C Top plate part P Rotating shaft core of handling cylinder S Vertical plane

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Tanaka 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory (72) Inventor Tetsuichi Odawara 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. (72) Inventor Ryuichi Minami 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. (72) Inventor Shinzo Kashino 64 Ishizukita-machi, Sakai City, Osaka Kubota Sakai Plant Co., Ltd.

Claims (2)

[Claims] 1. A receiving net (4) for dropping threshing-treated products from a handling chamber (2) to a sorting unit (3), wherein both ends (4A) and (4B) of the handling barrel in the circumferential direction are handling barrels (5). ) Provided above the rotary shaft core (P) and above the handling cylinder rotation shaft core (P), the handling barrel (5) of the receiving net ends (4A), (4B). In the axial flow type threshing device, the clearance between the object (4A) facing the descending rotation part (5A) of the above) and the handling cylinder (5) is gradually narrowed toward the handling cylinder descending rotation direction. The net end (4) facing the descending rotating portion (5A)
A) is a net-receiving structure for an axial-flow threshing device in which A) is arranged on the side of the handling cylinder (5) with respect to a vertical plane (S) that intersects the lower end thereof. 2. A receiving net (4) for dropping threshing material from a handling chamber (2) to a sorting section (3), and the two ends (4A) and (4B) of the handling cylinder in the circumferential direction of the handling cylinder (5). ) Provided above the rotary shaft core (P) and above the handling cylinder rotation shaft core (P), the handling barrel (5) of the receiving net ends (4A), (4B). In the axial flow type threshing device, the clearance between the object (4A) facing the descending rotation part (5A) of the above) and the handling cylinder (5) is gradually narrowed toward the handling cylinder descending rotation direction. The net end (4) facing the descending rotating portion (5A)
A) is arranged on the handling cylinder (5) side with respect to a vertical plane (S) intersecting the lower end thereof, and the receiving net end (4) facing the handling cylinder descending rotation portion (5A).
The top plate portion (8C) adjacent to (A) is formed into a substantially arcuate curved surface in which a gap between the top plate portion (8C) and the handling cylinder (5) is gradually narrowed toward the rotation direction of the handling cylinder. Net structure.