JPH08214680A - Thresher - Google Patents

Abstract

PURPOSE: To provide a thresher improved in winnowing efficiency and treating function for discharged straws and capable of reducing winnowing stream- resistance by forming a draft opening in a guiding device feeding the discharged straws by dropping the straws from a handling chamber onto a discharged straw-cutting chopper. CONSTITUTION: In this thresher a winnowing path 13 is arranged under a handling chamber, a guiding device 12 for feeding discharged straws by dropping onto a discharged straw-cutting chopper 10 from the handling chamber is arranged in a stage crossing the terminal side of the winnowing path 13 and a draft opening 15 is formed in the guiding device 12. The guiding device 12 is formed preferably in an overhung rake-like shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a guideway which is provided below a handling room and which drops straw from the handling room to a chopper for straw cutting and which feeds the guideway across the terminal side of the ventilation path. The threshing device provided.

[0002]

2. Description of the Related Art Conventionally, a guide member is formed of a blind plate so that the entire amount of the sorting air is curved and discharged below the guide member and is discharged.

[0003]

However, since the guide tool that crosses the terminal side of the wind selection passage increases the resistance to the flow of the selected wind, the wind selection efficiency is likely to decrease. As a means for reducing such a problem, it may be considered that the straw cutting chopper is arranged far away from the handling room rearward to greatly open the terminal side of the wind selection passage to reduce the flow resistance. However, there is a problem that the total length of the threshing device including the straw cutting chopper becomes large, and the inclination of the guide tool that feeds the straw to the straw cutting chopper from the handling room becomes loose and causes the retention and clogging of the straw. The chopper for straw cutting could not be unnecessarily rearwardly separated from the handling room.

The present invention has been made by paying attention to such an actual situation, and without increasing the total length of the threshing apparatus including the straw cutting chopper, and from the handling room to the straw cutting chopper. It is an object of the present invention to improve the air-selection efficiency by reducing the resistance to the flow of the sorting air while allowing the straw to be dropped and supplied smoothly.

[0005]

A feature of the invention as set forth in claim 1 is that a guide tool is provided below the handling room, and the straw is dropped from the handling room to a chopper for straw cutting and supplied. In the threshing device provided so as to cross the terminal side of the wind selection path, the guide tool is provided with a ventilation opening.

According to a second aspect of the present invention, in the threshing apparatus according to the first aspect, the guide tool is formed in a rake shape that is cantilevered backward.

According to a third aspect of the present invention, in the threshing device according to the first or second aspect, the guide tool is formed in a bent shape that is close to the tip rotation locus of the straw cutting chopper. There is something I did.

[0008]

According to the structure of claim 1, a part of the sorting wind is configured to go straight from the ventilation opening of the guide to the straw cutting chopper side. It can be reduced to improve wind selection efficiency.

According to a second aspect of the present invention, the guide is formed in a rake shape, that is, a large number of rod-shaped members cantilevered rearward are arranged side by side, and a ventilation opening is provided between the rod-shaped members. Since it is formed, it is possible to reduce the resistance of the guide tool to the flow of the selected wind and improve the wind selection efficiency as in the first aspect of the invention. In addition, since the guide tool is formed in a cantilevered rake shape, the straw from the handling room can be smoothly dropped and supplied to the straw cutting chopper without being caught by the guide tool, and the straw treatment function can be achieved. Can be improved.

According to the structure of claim 3, similarly to the invention of claim 1 or the invention of claim 2, the ventilation opening of the guide tool reduces the resistance of the guide tool to the flow of the sorting wind to improve the wind selection efficiency. Not only can it be improved, but since the guide tool is formed in a bent shape that is close to the rotation path of the tip of the chopper, the straw on the guide tool can be forcibly conveyed by the chopper, and the straw disposal function can be improved. Can be improved.

[0011]

According to the first aspect of the present invention, the straw cutting chopper is provided near the end of the handling room, the guide is provided in a sufficiently inclined state, and the entire threshing device including the straw cutting chopper is provided. Although it is possible to smoothly supply straw from the handling room to the straw cutting chopper without increasing the size, a guide tool that crosses the end side of the wind selection path reduces the wind selection efficiency. It has become possible to provide a threshing device that can be suppressed and is excellent in wind selection efficiency.

According to the invention of claim 2, in addition to the effect according to the invention of claim 1, the threshing device which is capable of smoothly supplying the straw on the guide tool to the chopper without staying and which is excellent in the straw treating function is also provided. Is now available.

According to the invention of claim 3, in addition to the effect of the invention of claim 1, the straw on the guide can be more reliably and smoothly supplied to the chopper, and the straw processing function is further improved. You can

[0014]

[Example] As shown in FIG. 1, in constructing an axial-flow combine threshing device, a handling chamber 2 communicating with a feed conveyor 1 for feeding grain culms from a reaping section on the left side of the figure is formed in the upper part of the case. Then, a sorting unit 3 is arranged below the handling chamber 2, and a receiving net (concave) 4 is provided for leaking grain from the handling chamber 2 to the sorting unit 3.

The handling cylinder 5 is horizontally supported in the handling chamber 2 in the front-rear direction, and spiral handling teeth 6a are attached to the outer peripheral surface of the handling cylinder 5 over the entire length thereof. The spiral handling teeth 6 are independent at a predetermined pitch. Handle tooth 6b
In order to guide the processed material flowing in the circumferential direction of the handling cylinder along with the rotation of the handling cylinder 5 in the axial direction of the handling cylinder axis, a large number of dust transfer valves 11 are provided on the top plate of the handling chamber 2. They are mounted in a state of being aligned in the core direction, and are configured so that the grain culms are subjected to threshing processing and are transferred in the core axis direction of the handling cylinder as the handling cylinder 5 is driven and rotated.

The sorting section 3 is provided with a rocking sorting case 9, a wind picking tray 12, a No. 1 product recovery screw conveyor 7, and a No. 2 product recovery screw conveyor 8 for processing the products leaked and supplied from the receiving net 4. The oscillating sorting case 9 receives it, and oscillates rearward to perform sieving sorting and wind sorting to remove threshed grains.
It is configured so that it is sent from the number recovery screw conveyor 7 to a Glen tank (not shown), and the insufficiently sorted No. 2 product is transferred to the swing sorting case 9 via the No. 2 recovery screw conveyor 8 and the reduction screw conveyor 8a. It is configured to return to the front.

A guide tool 12 for dropping the straw that has reached the end of the handling chamber 2 to the straw cutting chopper 10 is provided in a state of traversing the end side of the wind selection path 13, and the chopper 10 removes the straw. A plurality of guide wings 14 configured to discharge the shreds from the chopper 10 and diffused and discharged to the left and right are arranged side by side.

The chopper 10 is formed by a large number of rotary blades 10a that are driven and rotated and a large number of receiving blades 10c fixed to a receiving blade base 10b, and the guide tool 12 is placed close to the tip rotation locus of the rotating blades 10a. It is formed in a curved shape along the horizontal direction, that is, in a curved shape or a bent shape, and the straw on the guide tool 12 is forcibly conveyed by the chopper 10 to improve the straw treatment function.

As shown in FIGS. 2 and 3, the guide 12
Is formed in a rake shape which is cantilevered rearward at the end of the receiving net 4, that is, a structure in which a large number of round rod-shaped bodies 12b cantilevered by the connecting member 12a on the handling chamber 2 side by side are provided side by side. , A part of the sorting wind flows straight from the ventilation opening 15 between the rod-shaped bodies 12b toward the chopper 10 side, and the resistance of the guide tool 12 against the sorting wind flow is reduced to improve the wind selection efficiency. It is configured to do. Also, guide tool 1
By supporting the cantilever 2 backwards, the straw from the handling room 2 is smoothly supplied to the chopper 10 without being caught by the cantilever rake-shaped guide tool 12 to improve the straw treating function. is there.

As shown in FIG. 4, the interval between the rotary blades 10a is set to be twice the interval between the rod-shaped bodies 12b, and the rotary blades 10a are configured to pass through a position corresponding to the middle of the rod-shaped bodies 12b. It is configured so as to eliminate contact between the rotary blade 10a and the rod-shaped body 12b.

[Embodiment] In the invention according to claim 1, the concrete structure of the guide can be changed to an appropriate one such as a plate having a plurality of vertically elongated holes along the straw dropping direction, and The size, shape, arrangement, etc. of the ventilation openings formed in the guide can be changed appropriately. In the invention according to claim 2, as shown in FIG. 5, the free end side of the cantilever rake-shaped guide tool 12 is arranged so as to overlap the rotation locus of the rotary blade 10a in a side view, and the chopper 1
It may be configured so that the forced straw-conveyance by 0 can be realized more reliably. The cantilever rake-shaped guide tool 12 may be configured by arranging in parallel a rod-shaped body 12b made of a plate material in a vertical posture.

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

[Brief description of drawings]

1 is a vertical side view of the threshing device.

[Fig. 2] Side view of the vertical section around the chopper for cutting straw

FIG. 3 is a perspective view of a guide tool.

FIG. 4 is a vertical sectional front view showing a part of a guide tool and a chopper.

FIG. 5 is a vertical sectional side view around a chopper for straw cutting in another embodiment.

[Explanation of symbols]

 2 Handling room 10 Chopper 12 Guide tool 13 Wind selection path 15 Ventilation opening

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeyuki Hayashi 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (3)

[Claims] 1. A chopper (10) for cutting straw from the handling room (2) provided with a wind selection channel (13) below the handling room (2).
The guide tool (12) for supplying the straw to the wind-selection path (1)
A threshing device provided so as to traverse the terminal side of 3), wherein the guide tool (12) is provided with an aeration opening (15). 2. The threshing device according to claim 1, wherein the guide member (12) is formed in a rake shape which is cantilevered backward. 3. The threshing device according to claim 1 or 2, wherein the guide tool (12) is formed in a bent shape that closely follows the rotational trajectory of the tip of the straw cutting chopper (10). .