JPH0759165B2 - Combine with screw culling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is provided with a culm removal device for a screw-type thresher, and more specifically, a stalk removal device for a screw-type thresher in which the handling barrel of the thresher unit is configured by a screw auger It is about combine harvesters.

[Conventional technology]

Originally, the diameter of the screw auger used to convey grain in the axial direction was increased and a predetermined rotation speed was given, and the peripheral speed required for the crop was maintained on the screw blades, which resulted in the crop conveying action. In addition, it comes to have a threshing function.

In addition, if the gutter of the screw auger at this time is changed to a net with an appropriate size for the crop, the grains threshed in the handling room will leak downward from the net, and the stems and straw culms will be in the axial direction. It has a so-called sorting function, in which it is transported to and discharged outside the machine. This is a screw type thresher.

In the conventional screw type threshing machine, the culm discharge section of the threshing section is provided with an auxiliary device such as a beater (51) behind the screw auger (50) as shown in FIG. The stems and straw culms were discharged outside the machine.

[Problems to be Solved by the Invention] The conventional screw-type thresher not only requires an auxiliary device for culm, but this wastes space in the handling room.

In addition, when inputting the handling cylinder from the rear of the machine, it was necessary to arrange a transmission mechanism in the threshing, and such transmission was impossible.

In the case of the conventional Japanese Unexamined Patent Publication No. 57-198023, although the end of the handling barrel is projected to the rear of the handling chamber, the rear end of the handling chamber is directly exposed and the amount of protrusion is small. Cannot be discharged to.

In addition, since the amount of protrusion of the handle cylinder to the rear is small, if the drive input of the handle cylinder is performed from the rear, the culm from the handle cylinder may interfere with the transmission mechanism. Therefore, there is a problem that a balanced transmission arrangement cannot be performed.

[Means for Solving the Problems]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the need for a conventional auxiliary device and to make it possible to collectively discharge drains downward.

The technical means of the present invention for solving this technical problem is to form a handling cylinder with a screw auger, and to extend the rear end bottom surface side of the screw auger from the receiving net end to outside the handling chamber by one pitch or more, and The engine to be driven is arranged at the rear of the machine body, and the engine is driven from the rear of the handling cylinder.

[Action]

Place the rear side of the rear end of the screw auger from the receiving net to outside the handling room 1
With the screw auger itself that extends more than the pitch, the culms are discharged together downward.

〔Example〕

First, the entire screw type thresher will be described with reference to FIG.

Grains are scraped by the scraping reel (1) and mowed by the cutting blade (2), and the cropped crops are taken from the scraping auger (3) by the chain conveyor (5) of the feeder house (4) (6). ), A handling cylinder made of screw auger (7)
Be threshed in.

The threshed ones drop from the receiving net (8) onto the selection auger (9), and are moved toward the terminal end by the rotating auger (9).

During this transportation process, grains and fine straw debris leak downward from the receiving net (9a) stretched over the gutter of the auger (9), and only the long straws are carried toward the dust outlet (10).

Leakage containing grains dropped from the net (9a) is conveyed by the belt conveyor (12) onto the first gutter (13), and the grains are separated by the sorting wind by the blower fan (11) such as Karano No. 1 gutter (13), No. 2 gutter dropped to No. 2 gutter (14), No. 1 gutter (1
Grains that fell to 3) were transported to the paddy tank (1) at the lifting conveyor (16).
7) and the second one is handled by the second return conveyor (6)
It is supposed to be reduced to. Note that (15) is a crawler equipped with a threshing device.

In the present invention, the culm discharge part of the threshing part as described above is configured by the bottom surface side of the rear end part (7a) of the screw auger extending from the net end to the outside of the handling chamber (6). The extending length is 1 pitch or more.

Therefore, the straw or the like threshed in the handling room (6) is conveyed by the rear end portion (7a) of the screw auger, and the arrow (a)
It is discharged outside the machine as shown in.

As described above, the bottom side of the rear end of the screw auger can be directly discharged by the screw auger itself extending from the net end to the outside of the handling chamber by one pitch or more, so that auxiliary equipment such as beaters is not required and the auger can be lengthened accordingly. Not only the threshing ability is improved, but also long straw debris does not drop on the rocking sorting board, not only the sorting performance is improved, but also the culms can be collectively discharged downward. Since the screw auger requires a large amount of power, the output shaft (21) of the engine (20) is arranged rearward and the screw auger (7) is directly driven by the belt (23) as shown in FIG. In this case, the direction of the cooling air (22) of the engine is set to the same direction as the dust and the culm so that the operator and the engine intake air do not receive the dust. Moreover, since the engine (20) is located at the rearmost end of the machine body, the weight balance with the reaping unit which largely overhangs in front of the machine body is achieved.

In addition, as shown in FIG. 3, the culms are the casing (6a) of the handling chamber.
Alternatively, it may be carried out through a discharge tube (19) provided on the rear end peripheral surface.

The return of the 2nd product dropped to the 2nd gutter (14) to the screw auger (7) is performed by the 2nd return elevator (18) as shown by the arrow (c) as shown in Figs. It is naturally dropped from above the rotation axis of the auger (7). And the throwing angle is almost a thrower auger (7)
Tangential to the outer circumference. As a result, the reconstituted product merges smoothly, and blowback of grain loss is prevented.

The second return elevator (18) is arranged on the right side if the rotation direction of the slime (7) is counterclockwise as shown in the figure, but if it is on the left side as shown in the figure, the cleaning property is good and the paddy is rough. Wide receiving space.

〔The invention's effect〕

According to this technical means, the bottom surface side of the rear end of the screw auger is extended from the net portion to the outside of the handling room by one pitch or more,
Further, since the upper surface of the screw auger is covered, the drainage culms can be collectively discharged downward by the screw transfer action at the extending portion.

Since the screw auger itself can directly evacuate the bottom surface of the rear end of the screw auger from the receiving net end to the outside of the handling room, an auxiliary device such as a beater is unnecessary. In addition, since the auger can be lengthened accordingly, the threshing ability is improved.

Conventionally, long straw chips or the like have fallen from the beater or the like onto the rocking sorting board (53), but according to the present invention, such a situation does not occur and the sorting performance is improved.

Also, when the engine is placed rearward and the transmission from the rear part of the handling barrel is eliminated, there is no risk of the transmission device at the end of the handling barrel hindering culm removal. The balance of the aircraft will also be improved.

[Brief description of drawings]

FIG. 1 is a schematic front view of a screw type thresher, FIG. 2 is an explanatory view of a relationship between a handling cylinder and an engine, FIG. 3 is a left side view of the same as above, and FIG. 4 is an explanation of a relationship between a No. 2 reduction elevator and a lower cylinder. 5 and 5 are right side views of the same as above, and FIG. 6 is an explanatory view of a conventional device. (6) …… Handling room (7) …… Screw auger

Claims (1)

[Claims] 1. A handling cylinder is formed by a screw auger, and the bottom surface of the rear end of the screw auger extends from the net end to outside the handling chamber by one pitch or more, and an engine for driving the handling cylinder is arranged at the rear of the machine body. A combine equipped with the culm removal device of a screw type thresher that is driven from the rear of the barrel by this engine.