JPH07255263A - Tailings reducing structure of combine harvester - Google Patents

Abstract

PURPOSE:To obtain a tailings reducing structure of a combine harvester enabling easy switching of the level of the reprocessing capacity according to the kind of the harvested crop and preventing the retention of mud in the reprocessing part. CONSTITUTION:A reprocessing part 16 for reprocessing tailings with a blade 13 attached to an end of a lateral transfer screw is placed at the delivery end of a tailings recovery part provided with a lateral transfer screw for recovering and laterally transferring the tailings. The tailings are reduced from the reprocessing part 16 to the screening part with a screw transfer apparatus 17. The outer circumferential wall of the exterior case 15 of the reprocessing part 16 is constructed to enable alternative attaching of a 1st circumferential wall part 20a and a 2nd circumferential wall part. The 1st circumferential wall part 20a is attachable to and detachable from an attaching part 19 in a state approaching the inner wall face to the rotary orbit of the tip of the blade 13 interposing a prescribed gap and providing a receiving tooth 18 protruded inward on the inner wall surface. The 2nd circumferential wall part is attachable to and detachable from the attaching part 19 and provided with a mud discharging port in a state connecting the outer and inner surfaces of the wall interposing a gap larger than the gap of the 1st circumferential wall part 20a from the rotary orbit of the tip of the blade 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided at the end of the transverse feed screw at the end of the secondary article recovery section in which a transverse feed screw for conveying the second article while conveying it laterally is arranged. The present invention relates to a combine second product reducing structure in which a reprocessing unit that reprocesses a second product is provided by a blade body, and the second product is reduced from the reprocessing unit to a sorting unit by a screw conveyor.

[0002]

2. Description of the Related Art Conventionally, as a second product reducing structure for a combine of this type, as disclosed in, for example, Japanese Utility Model Laid-Open No. 5-23839, a tooth receiving member is provided on the outer peripheral wall of a case for exteriorizing a reprocessing section. There is known a structure in which a second object is reprocessed by projecting inwardly and cooperating with the teeth and the blade body.

[0003]

By the way, the reprocessing section structure in the above-mentioned conventional second crop reducing structure is effective for reprocessing the second crop in the harvesting and threshing operation of rice and wheat. When harvesting miscellaneous grains such as soybeans, for example, in the case of soybeans, beans separated from the pod are susceptible to damage due to the cooperation of the teeth and the feather body, and thus the commercial value is low. There was a problem of becoming a thing.
Further, in the conventional reprocessing unit structure in the above-mentioned secondary reduction structure, when harvesting miscellaneous grains such as soybeans, it is easy to mow with mud and take the mud into the threshing part, but the outer case is sealed. However, since the mud is accumulated in the bottom portion of the reprocessing section, the bean or the like stirred in the reprocessing section is contaminated, which lowers the commercial value. The present invention has been made in view of the above circumstances, and can be easily switched between a high reprocessing capability and a low reprocessing capability depending on the type of harvested crop, and mud does not stay in the reprocessing unit. The purpose of the present invention is to provide a second compound reducing structure of combine.

[0004]

In order to achieve the above-mentioned object, the combine second reducing structure of the present invention has the above-mentioned structure, wherein the peripheral wall part of the outer case in the reprocessing part is A first peripheral wall portion that is attachable to and detachable from a mounting portion in a state where the inner wall surface is close to the rotation trajectory of the tip of the blade body at a predetermined interval, and the inner wall surface is provided with teeth that project inward; A second peripheral wall portion is provided which is separated from the rotation trajectory of the body tip by a predetermined distance larger than the distance in the first peripheral wall portion, has a mud discharging hole in an internal / external communication state, and is attachable / detachable to / from the mounting portion. The characteristic configuration is that they can be replaced once. The operation and effect of this characteristic configuration are as follows.

[0005]

In other words, the peripheral wall portion of the outer case in the reprocessing section is provided with teeth which are provided inwardly on the inner wall surface in a state where the inner wall surface is close to the rotational trajectory of the blade body at a predetermined interval. A second peripheral wall having a first peripheral wall portion and an inner wall surface having a predetermined interval larger than the interval in the first peripheral wall portion with respect to the rotation trajectory of the tip of the blade body and having a mud discharge hole formed in an internal and external communication state. Since it is possible to selectively replace the part with the mounting part, when harvesting rice etc., the second peripheral reprocessing can be performed by mounting the first peripheral wall part on the mounting part. This can be done satisfactorily by the cooperation of the tooth receiving part of the reprocessing part and the blade body. On the other hand, when harvesting minor grains, by mounting the second peripheral wall part on the mounting part, it is unreasonably second Can be less susceptible to damaging treatments and thresh with cereals Mud taken in the is discharged to the outside through the mud ejection hole of the second circumferential wall portion can as fouling millets is suppressed by mud.

[0006]

Therefore, the simple operation of simply replacing the first peripheral wall portion with the second peripheral wall portion is suitable for the reduction of second crops suitable for the harvesting work of rice and the harvesting work for the cereals. Since it is possible to switch to the reduction of secondary products, it is possible to prevent excessive reprocessing of minor cereals, and also to prevent soil from being polluted by mud and to facilitate the discharge of mud from the reprocessing section to the outside. It came to be able to be suppressed by.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 6 shows a combine threshing device according to the present invention. This threshing device includes a threshing section A, a sorting section B, and a collecting section C. The threshing section A is provided with a handling room 1, a handling barrel 2, and a receiving net 3, and supplies processed products leaking from the receiving net 3 onto the sorting section B. The sorting section B is composed of a swing sorting case 5 and a sardine lees 6 that supplies sorting wind to the swing sorting case 5. The swing selection case 5 is constructed by arranging a coarse selection sheave 8, a fine selection sheave 9, etc. over a pair of left and right frame bodies 7, 7 which can be swingably driven. The collection unit C collects the first item that collects the first item that leaks from the precise selection sheave 9, and the second item that leaks from the rear end of the precise selection sieve 9 or the rough selection sieve 8. It is composed of a second object recovery unit 12. The 1st thing collection part 11 and the 2nd thing collection part 12 are the 1st screw 11a which conveys a collection thing to one horizontal side, respectively.
A second screw 12a is provided as a lateral feed screw.

Next, the second reducing structure for reducing the recovered second substance on the sorting section B will be described. As shown in FIGS. 1 to 3, at the end of the second screw 12a, four blades 13 for discharging and reprocessing are radially provided, and these blades 13 have a plurality of treatments at their tips. Tooth 14
Are arranged side by side in the direction of the axis of rotation of the second screw 12a. The exterior case 15 is provided in a state of covering the rotating space of the blade body 13, and the exterior case 15 and the blade body 13 form a reprocessing unit 16. At the front end of the outer case 15, a screw conveyer 17 for supplying the second object thrown out by the blade 13 and for lifting and returning to the sorting section B is connected. Reprocessing unit 1
The outer case 15 of No. 6 is made of sheet metal, and has a left side plate 15a having an opening for receiving the second object from the second collecting section 12.
And the right side plate 15b and these both side plates 15a, 15b
And the peripheral wall portion 15c between them. This peripheral wall 15
A part of c is configured to be replaceable depending on the type of harvested crop. That is, as shown in FIGS. 1 to 3, the inner wall surface is close to the tip of the blade body 13, that is, the rotation locus of the tip of the processing tooth 4 in this embodiment at a predetermined distance L1, and the inner wall surface is inward. First peripheral wall portion 20 attachable to and detachable from the attachment portion 19 with a plurality of teeth 18 protruding from the
a with respect to the rotation trajectory of the tip of the blade body 13
A predetermined distance L2 larger than the predetermined distance L1 in the peripheral wall portion 20a is provided, and the mud discharge hole 21 is provided in an internal / external communication state, and the second peripheral wall portion 20b that is detachable from the mounting portion 19 can be selectively replaced. Is configured. Here, the difference between the predetermined distance L1 and the predetermined distance L2 is set to about 5 mm. The mounting portion 19 has a flange structure in which a fixed peripheral wall portion preliminarily welded to the left side plate 15a and the right side plate 15b is provided so as to project outward. The mounting part 19 has an upper end portion of the outer case 15 and the screw below the outer case 15. It is provided in the vicinity of the carrier device 17. further,
As shown in FIGS. 1 to 3, the first peripheral wall portion 20a and the second peripheral wall portion 20b each have a structure in which they are divided into two in the circumferential direction of the outer case 15, and the peripheral wall members divided into two parts are mutually separated. It has a structure in which the flanges of are joined together by bolts. As a result, the assembly is carried out by bolting the divided two peripheral wall members to the mounting portion 19 and then connecting the peripheral wall members to each other by bolts.
In addition, in the 1st surrounding wall part 20a, the adjacent tooth | gear 18,
The processing teeth 14 of the blade body 13 are configured to pass between the blades 18, and the second teeth are loosened and tapped by the receiving teeth 18 and the processing teeth 14 as well as the straw cutting action. Is reprocessed.

Also in the screw conveying device 17,
Depending on the type of harvested crop, the bottom of the transport cylinder 17a, that is, the bottom forming the lower half of the transport cylinder 17a when viewed in the axial direction,
It can be replaced. More specifically, at the time of harvesting rice, a first cylinder bottom member 22a is attached as shown in FIG. 1, and at the time of harvesting minor grains such as soybeans, a second cylinder bottom member 22b is attached as shown in FIG. Of. The first cylinder bottom member 22a is bolt-connected to the outer peripheral edge of the screw 17b of the screw transport device 17 at a distance L3 from each other, and the second cylinder bottom member 22b is connected to the screw 17b of the screw transport device 17. It is bolted to the outer peripheral edge with a distance L4. The interval L3
Since the interval is set to L4, the second cylinder bottom member 22b is formed so as to bulge below the first cylinder bottom member 22a. Further, the second cylinder bottom member 22b is provided with a large number of vertical through holes 23 ...
2a does not have such holes. Here, the size of the upper and lower through holes 23 is set to be smaller than that of the single-grained grain.

According to the above structure, when harvesting rice with this combine, the first peripheral wall portion 22a is attached to the peripheral wall portion 15c of the outer case 15 of the reprocessing unit 16,
The first cylinder bottom member 22a is attached to the transportation cylinder 17a of the screw transportation device 17. As a result, in the rice barley harvesting operation, the second product recovered by the second product recovery unit 12 is the reprocessing unit 12 and the processed teeth 14 of the blade body 13 and the teeth 18 of the first peripheral wall 22a. The reprocessing is sufficiently carried out by the cooperation of the above, and is fed back to the sorting section B by the screw conveying device 17. On the other hand, when performing harvesting work for soybeans and other minor grains,
The second peripheral wall portion 22b is attached to the peripheral wall portion 15c of the exterior case 15 of the reprocessing unit 16, and the second cylinder bottom member 22b is attached to the conveying cylinder 17a of the screw conveying device 17. As a result, in the harvesting work of the minor grains, the second product recovered by the second product recovery unit 12 is merely subjected to the tapping or throwing action by the blade body 13 in the reprocessing unit 12, and the second action product is not sufficiently processed. It will be supplied to the screw type conveying device 17 so that it does not exist, and the reprocessing unit 1 together with the second object.
The mud sent to No. 2 (for coarse grains such as soybeans, because the mowing position is lowered to near the root so that the mud on the ridges can easily enter the threshing part), outward from the rotation track of the blade body 13. The inner surface of the distant second peripheral wall portion 22b is set to the crocodile,
Then, it can be discharged from the mud discharge hole 21 formed in the second peripheral wall portion 22b to prevent the single grains that have become single grains from being soiled with mud. Further, even when the second grain of the minor grains is conveyed by the screw type conveying device 17, the second cylinder bottom member 2 separated downward from the rotation locus of the screw 17b.
Since the inner surface of 2b is set to the crocodile and the mud is discharged from the upper and lower through holes 23 of the second cylindrical bottom member 22b, the single grained cereals are also soiled with the mud here. It is restrained.

Next, a brief description will be given of the blowing of the sorting air by the Kara Mino 6. As shown in FIG. 4, the blower port 2 of the Karato 6
4 includes a plurality of ventilation guide plates 25a, 2 installed on the left and right.
5b, 25c, 25d and 25e are arranged vertically. These air guide plates 25a, 25b, 25c, 25
air passages R1 to R5 between the d, 25e and the bottom plate 25f
Among them, the sorting wind that has passed through the three upper blowing passages R1 to R3 is blown toward three positions before and after the rough sorting sheave 8, respectively, and in the lower blowing passages R1 to R5. The selection air that has passed through the two air supply passages R4, R5 of the kawano is sent to two locations before and after the fine selection sheave 9, respectively.
Further, a plurality of ribs 26 are provided on the lower surface of the air flow guide plates 25a, 25b, 25c, 25d so as to guide the air flow toward the left and right sides of the air flow passages R1 to R4. In addition, the bottom plate 25f is
As shown in FIG. 5, the lower air blower is provided with a plurality of ribs 27 for guiding the air blow toward the center of the air blow passage R5 in the left-right direction.

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

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a second crop reducing device when harvesting rice.

FIG. 2 is a vertical cross-sectional side view showing a second product reducing device when harvesting minor grains such as soybeans.

FIG. 3 is a partially cutaway rear view showing a part of a second recovery part and a second recovery device.

FIG. 4 is a vertical sectional side view showing a sorting section and a collecting section of the threshing device.

FIG. 5 is a bottom view showing the ribs of the air guide plate and a plan view showing the ribs of the bottom plate.

FIG. 6 is a vertical cross-sectional side view showing a combine threshing device.

[Explanation of symbols]

 12 2nd thing collection part 12a Traverse screw 13 Blade body 15 Exterior case 16 Reprocessing part 17 Screw conveying device 18 Teeth 19 Mounting part 20a 1st peripheral wall part 20b 2nd peripheral wall part 21 Mud discharge hole B Sorting part

Claims (1)

[Claims] 1. A transverse feed screw (12a) is provided at a terminal end of a secondary feed recovery section (12) provided with a transverse feed screw (12a) that conveys a secondary article to one lateral side.
A reprocessing section (16) for reprocessing the second product by the blade body (13) provided at the end is provided, and the screw conveying device (1) is provided from the reprocessing section (16) to the sorting section (B).
7) A structure for reducing a second product in 7), wherein the peripheral wall part of the outer case (15) in the reprocessing part (16) is provided at the tip of the blade body (13). The mounting portion (1) with the inner wall surface close to the rotation trajectory with a predetermined interval and with the tooth receiving (18) protruding inwardly on the inner wall surface.
9) detachable from the first peripheral wall portion (20a) and the first peripheral wall portion (20) with respect to the rotation trajectory of the tip of the blade body (13).
A second peripheral wall portion (20) which is separated from the attachment portion (19) by a predetermined distance larger than the distance in a), is provided with a mud discharge hole (21) in an internal and external communication state.
b) a second reduction structure of a combine, which is configured so that it can be selectively replaced.