JPH0155852B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for straightening grain culms by arranging a plurality of threshing rotors in parallel in the culm direction while rotating in the same direction around an axis in the grain culm transport direction. The purpose of the threshing device is to reduce the vertical dimensions of the handling chamber by threshing the grain using a single threshing rotor, compared to a device with a single threshing rotor. The objective is to modify the system to one that can be made more compact and has high threshing efficiency.

The characteristic configuration of the present invention is that, in the above-mentioned threshing device, the protruding length of the handling teeth from the rotating shaft of each of the threshing rotating bodies is set to be equal to or larger than the diameter of the rotating shaft, and the threshing rotating bodies are arranged in parallel. The spacing is set close to the sum of the radius of the threshing rotating body and the radius of the rotating shaft.

That is, according to the above configuration, between a pair of adjacent threshing rotating bodies, one of the handling teeth rotates with the tip passing very close to the other rotating shaft, and the culm rotates around the rotating shaft of the other. In addition, the area where the action range of one handling tooth and the action range of the other handling tooth overlap in the axial direction of the threshing rotor becomes large, and the threshing rotor on the upper side of the receiving net The non-processing space created in the corresponding part between the threshing rotors, that is, the space where neither of the handling teeth of the two threshing rotors pass through, becomes smaller, so even if the rotary shaft is made small in diameter,
In response to this, grain culm wrapping is less likely to occur, and the amount of processed material that enters the non-processed space and becomes insufficiently threshed is reduced. Therefore, the diameter of the rotating shaft can be reduced to make the rotating body for threshing smaller in diameter, and the handling chamber can be made extremely compact with extremely small vertical dimensions.Furthermore, there is less breakage due to wrapping. In addition to reducing the amount of dust in the handling room, the amount of unprocessed material due to threshing due to the non-processing space is reduced, and threshing can be carried out efficiently, making it possible to provide a device that is easy to install and has good threshing performance. Ta.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, grain culms are supplied to a handling chamber 2 by a threshing feed chain 1 and handled by a rotating threshing rotary body 3, and threshed waste straw is supplied to a handling chamber 2 by a threshing feed chain 1. The threshing section is configured so that the threshing is carried out from the threshing feed chain 1.
An endless rotary chain 4 is provided at the rear of the threshing section to carry out the threshed waste straw to the outside of the machine, a sorting plate 5 that can be freely driven and oscillated for the processed material from the handling room 2, and a winnow that supplies sorting air. The sorting section with 6 is moved to handling room 2.
A screw conveyor 7 is installed below the machine to transport the No. 1 processed material from the sorting section to the outside of the machine, and a screw conveyor 8 is provided to return the No. 2 processed material from the sorting section to the handling room 2 so that it can be reprocessed. are provided at the bottom of the sorting section to constitute a threshing device for a combine harvester.

The threshing section will be described in more detail. It is constructed as shown in FIGS. 2 and 3.

That is, a plurality of the threshing rotating bodies 3 each having plate handling teeth 10 arranged in parallel in the circumferential direction and the axial direction of the rotating shaft 9 are integrally rotatably attached to the rotating shaft 9,
The rotating shafts P are arranged in parallel in the culm direction above the receiving net 11 with their respective rotational axes P along the grain culm transfer direction by the threshing feed chain 1, and at one end side of the threshing rotating body 3, the rotating shafts 9 A rotor drive gear 12 is attached to each of the threshing rotors 3, and adjacent drive gears 12 are interlocked with each other by a gear 13 that makes the rotation direction of each threshing rotor 3 the same, so that each threshing rotor 3 is the same. The grain culm is threshed by the action of the handling teeth 10 that rotate while moving between the receiving net 11 and the threshing rotating body 3, and the threshed product is threshed. is made to fall from the receiving net 11 to the sorting section.

The protruding length H of the handling teeth 10 from the rotating shaft 9 in each of the threshing rotating bodies 3 is set to be larger than the diameter of the rotating shaft 9, and the parallel spacing L of the threshing rotating bodies 3 is set such that
The radius is set to be slightly larger than the sum of the radius of the threshing rotary body 3 and the radius of the rotating shaft 9, and between a pair of adjacent threshing rotary bodies 3, 3, one of the handling teeth 10 has the tip of the other. The culms are rotated while passing very close to the rotating shaft 9 to scrape the culm from the rotating shaft 9 so as not to wrap around it, and the handling teeth 10 of both threshing rotors 3, 3 are The area of action that wraps in the direction of the axis of the threshing rotor becomes larger, and the receiving net 1
The non-processing space S formed above the threshing rotary body 1 in a nearly triangular shape when viewed in the direction of the axis of the threshing rotary body, that is, the space through which neither of the handling teeth 10 of both the threshing rotary bodies 3 and 3 pass, is minimized as much as possible. It's meant to be.

As the handling tooth 10 of the threshing rotary body 3 located on the stock head side rises, the handling tooth 10 of the threshing rotary body 3 on the adjacent ear side handles the culm as the handling tooth 10 of the threshing rotary body 3 located on the stock head side rises. so that it can be scraped off from the teeth 10.
The arrangement pitch of the handling teeth 10 and the rotational speed of the threshing rotating body 3 are each set in such a way that the prevention of wrapping around the rotating shaft 9 is performed more effectively.

The protruding length H of the handling tooth 10 from the rotating shaft 9 may be set equal to the diameter of the rotating body.

[Brief explanation of drawings]

The drawings show an embodiment of the threshing device according to the present invention,
Figure 1 is a vertical side view, Figure 2 is a sectional view of the threshing section,
FIG. 3 is a plan view of the threshing rotor drive section. 3... Rotating body for threshing, 9... Rotating shaft, 10...
Handling tooth, H...Protrusion length of working tooth, L...Rotating body parallel spacing, P...Rotating body rotation axis.

Claims (1)

[Claims] 1 A threshing device in which a plurality of threshing rotors 3 are arranged in parallel in the culm direction in a state in which they rotate in the same direction around an axis P in the grain culm transfer direction, wherein the threshing rotors 3
The protruding length H of each of the handling teeth 10 from the rotating shaft 9 is set to be greater than the diameter of the rotating shaft 9, and
In this threshing device, the parallel spacing L of the threshing rotors 3 is set close to the sum of the radius of the threshing rotors 3 and the radius of the rotating shaft 9.