JPH07155047A - Thresher for combine harvester - Google Patents

Abstract

PURPOSE:To obtain a thresher capable of promoting grain removing action of a threshing barrel and to reduce loss of grain. CONSTITUTION:In a thresher for a combine harvester in which the top of a threshing barrel 5 is covered with a top cover 82 forming a threshing chamber 29, the top cover 82 is made in a shape wherein the interval between the threshing barrel 5 and the top cover 82 is made larger at the lower side of the rotation than at the upper side of the rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine threshing device for cutting grains such as rice, wheat and soybeans for threshing.

[0002]

2. Description of the Related Art Conventionally, there has been a technique of threshing by providing a handling cylinder provided with screw blades on the outer circumference of a trunk and throwing in all the cut grain culms.

[0003]

In the above prior art, since the interval between the handling cylinder and the threshing upper surface cover is formed smaller on the rotation lower side than on the rotation upper side, the grain to be shredded is conveyed at a high speed by the screw blades, There is a problem in that the grain-removing action becomes insufficient and the grains are easily released outside the machine, and the grain collection efficiency due to grain-removing cannot be easily improved.

[0004]

DISCLOSURE OF THE INVENTION However, the present invention is a combine threshing device in which the upper side of the handling barrel is covered with the upper cover forming the handling chamber, and the distance between the handling barrel and the upper cover is lower on the rotating lower side than on the rotating upper side. The upper cover is formed in a larger shape.Because the particles to be shredded are satisfactorily kneaded between the upper handling cover and the rotating lower handling cylinder where the spacing increases,
It is possible to easily promote shattering and prevent out-of-machine discharge of the grain, and it is possible to more easily improve grain collecting efficiency by shattering than before.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a front explanatory view of the upper cover portion of the threshing portion, FIG.
Fig. 3 is a side view of the whole, and Fig. 3 is a plan view of the same. A threshing unit (5), a processing cylinder (6), a sorting mechanism (7), etc., mounted on the machine base (1), and (8) a threshing unit (4) taken out through a fried cylinder (9). ) Grain tank for storing
(10) is a reaper which is installed in the lower front of the threshing part (4) so as to be able to move up and down through a hydraulic cylinder (11), and (12).
Is a driving cabin provided with a driver's seat (13) and a driving operation unit (14) and arranged in front of the grain tank (8),
(15) is an engine part provided behind the grain tank (8) and internally equipped with an engine (16), and (17) is a grain carry-out auger for taking out grains in the grain tank (8).

The mowing section (10) connects the grain mowing header (18) for receiving the uncut grain culm and the rear center of the header (18) so that the mowing grain culm is threshing section (4). It is composed of a feeder house (19) to be fed to the uncut grass reel (20), a reciprocating drive type cutting blade (21), a weeding board (22), and a grain scraper auger. (23) and are provided in the grain header (18),
Supply chain conveyor (24) in which the cut culm to be taken into the header (18) is installed in the feeder house (19)
It is configured to be sent to the threshing unit (4) via the to perform threshing processing.

Further, a second reducing cylinder (25) is provided on the outer right side of the threshing section (4) so that the second processed product is returned to the processing cylinder (6) for re-thresholding and re-sorting. It is provided.

Further, as shown in FIG. 4, the screw type handling cylinder (5) comprises a cylindrical body (26) having a length substantially equal to the longitudinal length of the threshing section (4) and an outer periphery of the body (26). The screw-shaped handling cylinder (5) is provided with a spiral-shaped screw blade (27) wound around the shaft and erected in a radial manner, and a dust projection (28) provided on the outer periphery of the rear end of the body (26). ) Is rotatably supported in the machine front-rear direction, and the front end of the handling cylinder (5) is provided so as to face the front inlet of the handling room (29) communicating with the feeder house (19). ) The rear end of the handling cylinder (5) faces the rear dust collector (31), and the net (3) is provided below the handling cylinder (5) excluding the dust collector (31).
2) is installed and all the cut grain culms are added from the feeder house (19) to thresh.

Further, front and rear rocking sorters (33) and (34) constituting the sorter mechanism (7) are provided, and the swing link (3) is provided.
The sorting discs (33) (34) are swingably driven in the front-rear direction via 5), and the feed pan (36) located below the front part of the handling cylinder (5) and the grain leakage amount are adjustable. First chaff sheave (37) and its chaff sheave (3
7) The first sorting net (38) provided below and the sieving line (39) connected to the rear side of the chaff sheave (37) are provided on the front swing sorting disc (33) while the sieving line (39) is provided.
A second chaff sheave (40) provided below the rear side, and a sieving line (41) connected to the rear side of the chaf sheave (40),
A return plate (42) which is located above the sieving line (41) and below the rear end of the receiving net (32), and the first and second stream grain plates (4)
3) and (44) are provided on the rear swing sorting disc (34), and the front end side is located above the front part of the sieving line (41) and the rear end side is located below the end of the receiving net (32). The return plate (42) is attached in a front-back low-rear high posture.

Further, a dust removing fan (45) for supplying a sorting wind to the upper surface of the feed pan (36), and a first chaff sheave (37) and a first sorting net (38) below the first sorting net (38).
And the Kara-mino fan (48) that supplies sorting air through the second air passages (46) (47), and one that receives the grain from the first sorting net (38) and sends it to the fried grain barrel (9). Guard gutter (49) and first conveyor (50), and second chaff sheave (40)
A second sorting fan (51) that supplies sorting air to the lower side and the upper surface of the second-flow grain board (44), and two that sends the reduction products from the second-flow grain board (44) to the second-reduction cylinder (25). A gutter (52) and a second conveyor (53), and a third port (54) facing the sieving line (41) at the rear end of the sorting board (34),
The grain of the first gutter (49) is sent to the tank (8), and the reduced product of the second gutter (52) is sent to the processing cylinder (6).

Further, as shown in FIG. 5, the engine (1) is connected to the handle barrel driving pulley (56) and the sorting driving pulley (57) via the PTO case (55) on the right rear side of the threshing unit (4).
6) Transmitting the output, connecting the handling cylinder (5) to the processing cylinder (6) via these front pulleys (58) (59),
Each part of the handling cylinder (5), the processing cylinder (6), and the sorting mechanism (7) is driven.

Further, as shown in FIGS. 5, 6 and 7, a processing chamber (60) is formed on the upper right side of the handling chamber (29),
A processing cylinder (6) whose front end position is substantially the same as that of the handling cylinder (5) is provided inside the processing chamber (60), and a second object return port (61) communicating with the front of the processing chamber (29) is processed. A treatment receiving net (62) that is formed in the front part of the chamber (60) and through which grain is leaked by the second treatment is stretched in the middle part of the treatment chamber (60), and the second treatment product is conveyed forward. A blind bottom plate (63) is stretched over the rear part of the processing chamber (60).
5) through the charging port (64) into the rear part of the processing chamber (60), and the second processed material is charged into the bottom plate (6) by the processing cylinder (6).
3) The second treated product above is transferred to the front side to be re-shredded, the grain is leaked from the second receiving net (62) in the middle, and the remaining treated product is passed from the second return port (61) in the front. Is returned to the front side of the handling room (29).

Further, a grain plate (65) for guiding the grains leaking from the second receiving net (62) onto the front swing sorting disc (33) is provided, and the grain of the grain plate (65) is also provided. The downflow guide plate (66) is extended to the lower end, the downflow guide plate (66) is extended below the lower end of the handling cylinder (5), and the downflow guide plate (66) is extended to the right side of the handling drum (5) in plan view. ) The lower end side is overlapped, and the lower end edge (67) of the flow-down guide plate (66) is made different in height in the front-rear width direction, and the highest rear lower end edge (67
a) from the earliest drop of grain, the lowest center bottom edge (67b) from the slowest drop of grain, and the processing cylinder (6)
Grains that leak from the front swinging sorting plate (33) are dispersed on the center side and dropped.

Further, as shown in FIGS. 5, 6 and 9, the receiving net (32) is divided into left and right to form a left net (68) and a right net (69), and the left net (68) and Each mesh frame (70) (71) of the right mesh (69) is fixed to the left and right mesh frames (72) (73) by bolts (74) (75) at the central joint, and the lower side of the mesh net (32). A horizontal horizontal pipe (77) is installed in the front-rear direction through a horizontal frame (76) that is horizontally laid in the left-right direction, and the horizontal frame (77) has a length substantially equal to the entire width in the front-rear direction of the receiving net (32). ),
It is arranged below the central joint between the left net (68) and the right net (69), and integrally fixes a plurality of flat plate-shaped net guides (78) so as to cross the horizontal frame (77). , The net frame (72) (7) on the receiving net guide (78).
3) is detachably mounted, and the left and right nets (68) and (69) are detachably joined at the substantially central portion and the left and right nets (6)
8) The right and left nets (68) (69) joining edges of the upper and lower nets (70) (71) of the round bar-shaped left and right protective bars (79) (80) having a thickness substantially equal to the layer thickness of (69) Fixed to the net (6
8) (69) Lifting prevention of joint end and net (68)
(69) It is possible to prevent wear of the joint end, and to prevent the culm or grain from colliding and locking with the mesh (68) (69) joint end, and improving the flowability of the culm to reduce the load on the handling cylinder (5). It is designed to mitigate and reduce grain damage.

Further, an upper cover (82) is attached so as to be openable and closable around a fulcrum (81), and lead plates (83) and (84) for guiding and guiding the particles to be shredded are provided on the inner surface side of the upper cover (82) for handling. The top cover (8) forming a chamber (29)
2) The upper side of the handling cylinder (5) is covered with the handling cylinder (5)
And the rotation lower side gaps (C) and (D) are formed to be larger than the rotation upper side gaps (A) and (B) of the top cover (82), and the gap between the handling cylinder (5) and the top cover (82) is The top cover (8) has a shape in which the lower rotation side is larger than the upper rotation side.
2) is formed, and the space between the rotating lower handling cylinder (5) and the upper surface cover (82) is well kneaded to promote the disintegration, and the disintegrated product is in the state of small particles. It is configured to prevent it from being discharged outside the aircraft.

[0016]

As is apparent from the above embodiments, the present invention is a combine threshing device in which the upper side of the handling drum (5) is covered with the upper cover (82) forming the handling chamber (29). The upper cover (8) has a shape in which the distance between the upper cover (82) and the upper cover (82) is larger on the lower rotation side than on the upper rotation side.
2) is formed, the particles to be shredded are satisfactorily kneaded between the handling cylinder (5) on the rotating lower side and the upper cover (82) where the spacing becomes large. It is possible to easily perform release prevention and the like, and it is possible to more easily improve grain collection efficiency due to shedding than in the past.

[Brief description of drawings]

FIG. 1 is a front explanatory view of a top cover portion of a threshing portion.

FIG. 2 is an overall side view of the combine.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of a threshing unit.

FIG. 5 is a plan view of the same.

FIG. 6 is a front view of the same.

FIG. 7 is a side view of a processing body.

FIG. 8 is an enlarged explanatory diagram of a receiving net of a threshing unit.

[Explanation of symbols]

 (5) Handling body (29) Handling room (82) Top cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keita Uekubo Keita 1-32, Chayamachi, Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. (72) Inventor, Mikio Takagi, 428, Enami, Okayama Seirei Industrial Co., Ltd. In-house (72) Inventor Tsuguo Yamazaki 428 Enami, Okayama City Seirei Industrial Co., Ltd. In-house (72) Inventor Tomohiko Ichikawa 1-40, Nisshin-cho, Omiya-shi, Saitama Prefectural Institute for the Promotion of Specified Industrial Technology (72) Inventor Takao Sugiyama 1-40, Nisshin-cho, Omiya-shi, Saitama Prefecture 2 Biological Specific Industrial Technology Research Promotion Organization

Claims (1)

[Claims] 1. In a combine threshing device that covers the upper side of a handling cylinder with a top cover that forms a handling chamber, the upper cover is formed in a shape in which the distance between the handling barrel and the upper cover is larger on the rotating lower side than on the rotating upper side. Combine threshing device characterized by.