JPH08116779A - Threshing device in combine harvester - Google Patents

Abstract

PURPOSE: To obtain the subject threshing device easy to be mounted, reduced in processing and assembling cost and excellent in surface slipperiness and sorting performance, by monolithically forming a fourth gutter with a synthetic resin material, in the rear of the threshing chamber inside a threshing section, where the fourth gutter guides grains falling from waste straw after threshing to a swinging sorting panel situated under the chamber. CONSTITUTION: This threshing device is obtained by monolithically forming a fourth gutter 68 with a synthetic resin material, in the rear of the threshing chamber inside a threshing section, where a fourth gutter 68 guides grains falling from waste straw after threshing to a swinging sorting panel situated under the chamber. It is preferable that the sectional design of the fourth gutter 68 be of nearly inverse V-shaped form when viewed sideways to treat the grains falling from waste straw by avoiding their stay.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a technique in which a stock of a cut culm is held in a feed chain and moved in parallel with a handling barrel axis, and only the tips are supplied to a handling room for threshing. The present invention relates to a combine threshing device that carries straw from a feed chain to a straw chain and carries the straw into a straw processing unit mounted on the rear side of the threshing unit.

[0002]

2. Description of the Related Art Conventionally, a No. 4 gutter, which is arranged below a straw transport chain, has a front edge of a steel plate which is stretched substantially horizontally with another steel plate in a front-down state and another steel plate at the rear edge. It was formed by joining them vertically.

[0003]

The conventional steel plate No. 4 gutter requires time and effort for assembling and mounting, and at the same time, the clams and the like dropped from the straw are retained in the flat part of the No. 4 gutter, and the lower part of Some of them could not be dropped on the rocking sorter, resulting in grain loss, and because they were made of iron plate, they had slipperiness and some of them adhered to the No. 4 gutter inclined surface and did not fall. (In particular, it is noticeable after rust has occurred.) Also, there is a problem that the Karafu wind leaks from the steel plate joint portion of the No. 4 gutter, which lowers the sorting performance, and causes environmental deterioration due to dust blowout.

An object of the present invention is to provide a combine threshing device for solving the above problems.

[0005]

In order to achieve the above object, the combine threshing device of the present invention is arranged such that the grain falling from the threshing straw after threshing is oscillated at the rear of the handling room in the threshing section. In a combine with a 4th gutter that guides to the board, the 4th gutter is integrally formed with a synthetic resin material.
By integrating the resin in the gutter, manufacturing and mounting can be done easily, and the processing and assembly costs can be reduced, and the surface smoothness is excellent, and the retention of grains is eliminated and flow down is promoted. Furthermore, because of the integral formation, the sorting performance can be improved without leakage of the sorting wind from the Kara tsubame.

Further, by forming the cross section of the No. 4 gutter into a generally mountain-like shape in side view, the No. 4 gutter having good sliding characteristics can be swiftly moved to the rocking sorting board side without retaining the falling grains from the straw. It can be slid to improve the processing function on the 4th gutter.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a sectional side view of a No. 4 gutter, FIG. 2 is an overall side view of a combine, and FIG. 3 is a plan view of the combine, in which (1) is a track frame on which a traveling crawler (2) is mounted, and (3 )
Is a machine installed on the track frame (1),
(4) is a threshing section in which the feed chain (5) is stretched on the left side and the handling cylinder (6) and the processing cylinder (7) are built in, (8)
Is a mowing section provided with a cutting blade and a grain culm transport mechanism, (9) is attached to the rear side of the threshing section (4), and a straw chain (10)
And a straw processing unit that faces the end of the straw tine (11),
(12) is a driver's cab provided with a driver's seat (13) and a driver's operating unit (14), (15) is an engine unit provided in the right front part of the machine base (3) and internally equipped with an engine (16), ( Numeral 17) is a grain tank which is arranged behind the engine section (15) and stores the grain from the threshing section (4).
It is configured to perform threshing work.

Further, as shown in FIGS. 4 to 6, (1
9) is a handling chamber in which an axial-flow-type handling barrel (6) axially mounted in the longitudinal direction of the machine body is installed, (20) is a handling port for inserting grain culms into the handling chamber (19), and (21) is A crimping net (22) stretched under the handling chamber (19) communicates with the handling chamber (19) through an opening (23) to form a crimping net (24) on the left outside of the processing cylinder (7). A processing chamber to be stretched, and (25) is a rocking sorting board which is rockably supported in the front-rear direction via a rocking link (25a) and a guide roller (25b), and is located below the crimp net (21). Position the feed pan (2
6), the chaff sheave (28) located below the rear part of the crimp net (21), and the gren sheave (29) arranged below the chaff sheave (28) constitute the swing sorting board (25), A sieving line (30) is integrally attached to the rear of the swing sorting board (25).

Further, reference numeral (32) in the figure denotes the sorting board (2).
5) Karatsu that sends the sorting wind in the direction, (33) is the first conveyor to take out the grains to the grain tank (17) through the lifting cylinder (31), and (34) is the second conveyor. Cylinder (34a)
The second conveyor (35) which returns to the front part of the swing sorting board (25) via the (3) is opposed to the dust outlet (22a) at the rear end of the processing chamber (22) above the sieving line (30). And a suction / exhaust fan that exposes the suction port (36), and the grains that have been threshed by the handling cylinder (6) and the processing cylinder (7) are sorted by a rocking sorting board (25) to adjust only the grain. Grain tank (1
At the same time, the straw is sent to the straw processing unit (9) having the straw cutters (37) and (38) through the straw chain (10) and the tine (11) and discharged to the outside of the machine after cutting. Is configured as follows.

As shown in FIG. 7, power is transmitted from the output shaft (40) of the engine (16) to the input shaft (43) of the HST (42) mounted on the traveling mission (41), and the left and right outputs of the mission (41) are output. Left and right driving sprocket shafts (44) (4) of the left and right traveling crawlers (2) (2) which are shafts.
4) is being driven.

Further, a threshing input shaft (45) from the output shaft of the engine (16) via a threshing clutch (not shown).
A counter shaft (46) for transmitting power to the threshing input shaft (45) and interlockingly connected to the threshing input shaft (45), and transmitting power from the counter shaft (47) to the handling barrel shaft (48) and the processing barrel shaft (49), respectively. There is.

Power is transmitted from the threshing input shaft (45) to the Karato shaft (50), and from the Karato shaft (50) to the crank shaft (51) for driving the rocking sorting disk (25). An output pulley (52) to the reaper (8) is provided on the crankshaft (51).

Further, the first conveyor shaft (53), the second conveyor shaft (54) and the counter shaft (55) are interlockingly connected to the Karato shaft (50), and the counter shaft (55).
The fan shaft (56) and the high speed side cutter shaft (57) are interlocked with each other, and the low speed side cutter shaft (58) is interlocked with the high speed side cutter shaft (57) to the drive sprocket shaft (59) of the feed chain (5). Power is being transmitted to.

Further, the conveyor shaft (61) of the fried grain conveyor (60) is interlockingly connected to the first conveyor shaft (53), and the conveyor shaft (62) of the reduction conveyor (62) is connected to the second conveyor shaft (54). 63) in an interlocking manner, and a drive sprocket shaft (6) at the front of the straw chain (10) from the rear end of the handle barrel shaft (48) via a counter shaft (64)
5), the drive sprocket (67) for the straw tine (11) is provided on the driven sprocket shaft (66) at the rear of the straw chain (10).

As shown in FIGS. 1 and 8, the fourth gutter (68) is arranged behind the handling chamber (19) in the threshing section (4) and below the feed start end side of the straw chain (10). Is integrally molded with a synthetic resin material such as polypropylene. The front guide surface (68a) is steeply sloped to the front rearward at the center of the left and right of the No. 4 gutter (68), and the left front side is gently sloped to the rear upward. The inclined front guide surface (68b) and these front guide surfaces (68b)
a) (68b) A substantially flat rear guide surface (68) connected to the rear side.
c) and the right guide surface (68d) that is connected to the right side of the front and rear guide surfaces (68a) (68c) in the center are made of resin, and the fourth gutter (68) whose cross-sectional shape is substantially mountain-shaped in side view ) Has good sliding characteristics, so that the falling grains from the straw can be quickly flown down to the swing sorting disc (25) on the lower front side, and the straw on the 4th gutter (68) can also be promptly removed from the machine. It is configured to guide the discharge. In addition, the 4th gutter (6
Since 8) is integrated with the resin, there is no gap in the manufacturing process, so that the blowing out of the sorting air from the Karako (32) as in the conventional case is eliminated.

As shown in FIGS. 9 to 11, the throwing body (69) at the upper end of the fried food barrel (31) facing the inside of the grain tank (17) is formed to have a substantially fold-shaped cross section in a side view. Things
It is fixed to the outer circumference of the semi-circle at the upper end of the fried grain cylinder (31) so as to surround the inclined bottom plate portion (69a) on the lower right side of the thrower body (69) (downward toward the center of the tank (17)). The upper end of the fried conveyor shaft (61) is projected above the top plate portion (69b), and the bolt (7) is attached to the upper surface of the top plate portion (61b).
0), the upper end of the conveyor shaft (61) is rotatably supported by a bearing plate (71) via a bearing (72).

Further, as shown in FIG. 11, the bearing (7) interposed between the conveyor shaft (61) and the bearing plate (71).
2) and the collar (73) between the top plate portion (69b) and the inner periphery of the bottom plate portion (69b) and the conveyor shaft (61),
A sealing member (74) in the shape of a circular plate is interposed to prevent dust and the like in the tank (17) from entering the bearing (72) by the sealing member (74) and reduce the number of parts. are doing.

Further, the casting body (69) has a bottom plate (6
9a) and the vertical side plate part (69c) between the top plate part (69b)
Is provided on the left side of the feeding blade plate (75) at the upper end of the conveyor shaft (66), and the bottom plate portion (69a) and the top plate portion (69) are provided.
b) between the front and rear (corner) of the vertical side plate (69c),
The guide plate (76) is fixed in a divergent shape in a plan view, and the guide plate (76) is used to make the throwing port (3) of the fried cylinder (31).
It is configured to guide the grain in 1a) and reinforce the throwing body (69). The slanted bottom plate portion (69a) of the throwing body (69) promotes the discharge of paddy from the throwing hole (31a) into the tank (17), and at the same time, the bottom plate portion (69a) and the side plate portion (69c). The gap (T) between the corner and the inner wall surface of the tank (17) is made larger than that of the conventional U-shaped one, which enables good discharge without clogging the grain in the gap (T). It is a thing.

As shown in FIGS. 12 to 14, the grain tank (17) and the lower two paddy discharge tubes (77) are integrally molded with a synthetic resin material. A block-shaped shutter mounting portion (78) having an outer shape larger than that of the cylinder (77) is integrally formed substantially in the middle, and the outer diameter of the cylinder (77) is larger than the outer width of the cylinder (77) at the center of the shutter mounting portion (78). Open the shutter insertion hole (79) to
A shutter (8) having an opening (80) in the insertion hole (79)
1) is provided slidably, and an opening (80) and a shutter (81) that are larger than the inner shape of the cylinder (77) ensure that there will be no paddy residue or paddy when the shutter (81) is opened and closed. It is configured to open and close the shutter (81).

The shutter (81) is also molded from a synthetic resin material, and one end side of the shutter (81) is formed into a handle portion (81a) having a large thickness and a wide width, and the handle portion (8) is formed.
1a) has a handle hole (82) and the shutter (81) has the opening (80) at the other end thereof, and is bent at the other end of the shutter (81) via a hinge member (83). A restricting member (84) having the same thickness as the shutter (81) is freely attached, and the restricting member (84) is normally bent so as to overlap with the shutter (81) and the bolt (85) is bent.
And a stopper portion (81a) that increases the thickness and width when the shutter (81) is pushed in (closed), while forming a stopper when the shutter (81) is pulled out (opened). Is also used as a stopper to reduce the number of parts.

Further, a cover plate (88) is hung in a free state at a rear end of the straw chain cover (86) which covers the upper part of the straw chain (10) on the feed end side side through a pivot fulcrum member (87). Lowered and not working or straw cutter (37) (3
When the straw is cut by 8), the cover plate (88) hides the straw chain (10) and the like from the outside, while the switch plate (8) is provided above the straw Chener (10) when binding.
When the straw is sent to the rear of the chain (10) by being covered with the cover (9), the cover plate (8
8) is configured to be pushed open.

This embodiment is constructed as described above, and the fourth gutter (6) which is conventionally formed by combining a plurality of parts is used.
By making 8) an integrally molded product made of synthetic resin,
The number of parts can be reduced and processing can be facilitated to reduce the processing cost. Also, due to the good sliding characteristics of the synthetic resin and the chevron shape in side view, the grains falling on the No. 4 gutter (48) can be prevented. It is possible to promptly promote the flow down to the rocking sorting board (25) side without making it stay, and also to facilitate smooth movement of the straw in the machine outer direction. (32)
It is possible to maintain stable sorting performance and environmental preservation without blowing out of the sorting air from the gap.

[0023]

EFFECTS OF THE INVENTION As is clear from the above embodiments, according to the present invention, in the rear of the handling room (19) in the threshing part (4), the grains falling from the threshing straw after threshing are placed on the lower swing sorter ( In the combine with the 4th gutter (68) for guiding to 25), since the 4th gutter (68) is integrally formed with a synthetic resin material, the manufacturing and mounting of the 4th gutter (68) It can be performed easily and can reduce the cost of processing and assembling. It also has excellent surface smoothness and can prevent the retention of grains and promote the flow-down. Therefore, the sorting performance can be improved without leakage of the sorting wind from the Kara no (32).

Further, since the cross section of the No. 4 gutter (68) is formed into a substantially chevron shape in side view, the No. 4 gutter (68) having good sliding characteristics without retaining fallen grains from straw.
The upper part can be quickly slid to the rocking sorting board (25) side, and a remarkable effect such as the processing function on the fourth gutter (68) can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a fourth gutter.

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

FIG. 3 is an overall plan view of the combine.

FIG. 4 is a cross-sectional explanatory view of a threshing unit.

FIG. 5 is an explanatory plan view of a threshing unit.

FIG. 6 is a front explanatory view of the combine.

FIG. 7 is an explanatory diagram of a drive system.

FIG. 8 is a plan view of a fourth gutter.

FIG. 9 is a front explanatory view of a frying tube throwing port.

FIG. 10 is an explanatory plan view of a frying tube throwing port.

FIG. 11 is an explanatory diagram of a bearing portion of the fried food conveyor.

FIG. 12 is a side view of the grain tank section.

FIG. 13 is a bottom view of the grain tank section.

FIG. 14 is an explanatory diagram of a shutter unit.

[Explanation of symbols]

 (4) Threshing section (19) Handling room (25) Swing sorting board (68) No. 4 gutter

Claims (2)

[Claims] 1. A combiner equipped with a No. 4 gutter for guiding a grain falling from a straw after threshing to a swinging selection disc below, behind a handling room in a threshing section, wherein the No. 4 gutter is a synthetic resin material. A combine threshing device characterized by being integrally formed. 2. The combine threshing device according to claim 1, wherein the cross section of the No. 4 gutter is formed in a substantially mountain shape in side view.