JPH0461609B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a belt-type threshing device, and more specifically, a handling belt is wound and stretched between a pair of pulleys, and the threshing belt is wound and stretched between a pair of pulleys, and This invention relates to a belt-type threshing device equipped with a crimp net.

[Conventional technology]

This type of threshing equipment is configured so that grain culms, which are held and conveyed in a sideways position by a feed chain, are introduced into the handling chamber and threshed, and the threshed product is separated by leakage using a crimp net. . The crimp net is stretched along the lower straight path portion of the tip trajectory of the handling teeth of the handling belt,
Generally, different wall surfaces are provided in the portion along the arc-shaped path of the handling tooth tip trajectory corresponding to the ear tip side of the inserted grain culm.

[Problem that the invention seeks to solve]

According to the above configuration, in the non-handling type that handles and processes below the handling belt, the threshed material that has not leaked from the crimp net is splashed above the handling belt by the circular motion of the handling belt inside the handling room. The grain culms are conveyed to the feed chain side through the upper part of the handling room, and flow into the crimp net again from the stock part of the grain culms being pinched and conveyed. If the grain culm and the processed material on the crimp net become too dense, the threshing performance and leakage performance may deteriorate significantly. .

In addition, in the top-handling type in which the grain is handled above the handling belt, the entire amount of threshed material generated above the handling belt is supplied from the inside of the handling chamber onto the crimp net below the belt. In some cases, the density of the processed material increased excessively, resulting in a decrease in single graining performance and leakage performance.

The present invention improves the handling action in the arcuate path portion by modifying the arcuate path portion on the side corresponding to the tip side of the inserted grain culm in the handling chamber, thereby improving the threshing ability of the threshing device. The purpose is to

[Means for solving problems]

In order to achieve the above object, the belt-type threshing device according to the present invention has a handling belt wound and tensioned between a pair of pulleys, and a limping net is arranged along the lower straight path portion of the tip trajectory of the handling teeth. At the same time, in the belt circulation region corresponding to the tip side of the inserted grain culm,
A crimp net is arranged along the arc-shaped path portion of the tip trajectory of the treated tooth, and the mesh size of the crimp net in the arc-shaped path portion is set to be smaller than the mesh size of the crimp net in the straight path portion. A certain thing is a characteristic configuration.

The functions and effects of this characteristic configuration are as follows.

[Effect]

In other words, the moving speed of the tip of the handling tooth of the handling belt in the arcuate path portion of the crimp net is faster than the portion along the lower straight path portion of the trail of the tip of the handling tooth on the lower side of the handling belt of the crimp net. Because of this, the handling action in the arc-shaped path is large, and unprocessed paddy such as paddy with branches is held there against slippage by the unevenness of the crimp net in the arc-shaped path, and the material is not rubbed. Give to the processed material. By setting the mesh size of the crimp mesh in the arcuate path portion to be small, it is possible to easily retain the unprocessed material and to make it easy for only single grains to leak out.

〔Effect of the invention〕

Therefore, the handling action and granulation effect of the arcuate path of the crimp net in the handling room are increased, the overall area of the crimp net is increased, and the leakage ability is improved, etc. We were able to improve our threshing ability.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Figure 4, threshing feed chain 1
The threshing handling belt 4 is rotated by a drive pulley 3a and an idler pulley 3b around an axis (P ₁ ) along the grain culm transport direction. The threshing straw is handled and processed by the lower part, and leakage is sorted by the clamp net 5, and the threshed waste straw is transferred to the handling room 2 by the feed chain 1.
a swinging drive sorting device 6 for the processed material supplied from the handling room 2;
A sorting section is provided below the handling room 2, which has a winnowing machine 7 that supplies sorting air in the direction of transporting the threshing culm, and a rotating fan 8 that sucks and sorts out dust and discharges it to the outside of the machine. A first screw conveyor 9 for carrying the material out of the machine and a screen conveyor 10 for returning the second processed material from the sorting section to the handling room 2 are provided at the bottom of the sorting section to constitute a threshing device for a combine harvester. It has been done.

As shown in FIG. 1, the handling belt 4 has a large number of triangular handling teeth 11 attached to an endless belt 4a at predetermined intervals in the traveling direction of the belt 4a.
The specific means of attachment is as shown in Figure 2.
The handling teeth 11 are erected on a long metal plate 12 at predetermined intervals, and the belt 4a is attached with the metal plate 12 along the axis (P ₁ ) direction of the drive pulley 3a.
Tighten and fix on the outer circumferential surface at a constant pitch in the circumferential direction.
This tightening and fixing is done by connecting the bolt 13 to the belt 4.
Rectangular washer 1 as shown in Figure 3 from the inside of a.
4 and screwing the nut 15 from the outside, that is, from the metal plate 12 side.

Note that the washer 14 has a core wire 16 buried in the belt rotation direction to reinforce the tension of the belt 4a.
In order to increase the connection strength of the metal plate 12 to the belt 4a by enclosing a large amount of metal plate 12, and to avoid impairing the flexibility of the belt 4a portion to which the metal plate 12 is fixed, it is configured in a horizontally long rectangular shape. .

The crimp net 5 is fixed by the crimp net support frame 17, and is attached to a portion along the lower linear path of the tip locus l of the handling teeth of the handling belt 4, and a belt rotation corresponding to the tip side of the grain culm to be inserted. It is connected to the portion along the arcuate path of the treated tooth tip locus l in the row region.

Note that the mesh size of the crimp net 5b along the arcuate path is smaller than the mesh size of the crimp net 5a along the lower straight path. In the straight path portion, the mesh is made coarse to promote leakage, and in the arcuate path portion, the mesh is made dense to cause the processed material to accumulate excessively. This is because the movement speed is faster than that of the straight path section and the handling action is stronger, which promotes single graining and mainly causes grains to leak and suppresses straw waste from leaking.

The present invention may also be implemented with a threshing device in which the upper part of the handling belt 4 performs the handling action.

[Brief explanation of the drawing]

The drawings show an embodiment of the belt-type threshing device according to the present invention, in which Fig. 1 is an internal rear view, Fig. 2 is a cross-sectional view of the handling belt, Fig. 3 is a perspective view of the washer, and Fig. 4 is a side view. It is. 3a, 3b...pulley, 4...handling belt, 5
... Crimp net, l ... Handling tooth tip trajectory.

Claims (1)

[Claims] 1. A handling belt 4 is wound and tensioned between a pair of pulleys 3a and 3b, and a crimp net 5 is arranged along the lower straight path portion of the handling tooth tip locus l, corresponding to the tip side of the inserted grain culm. In the belt circulation region, the crimp net 5 is arranged along the arcuate path portion of the handling tooth tip locus l, and the mesh of the crimp net 5 in the straight path portion is larger than that in the arcuate path portion. A belt-type threshing device in which the mesh size of the mesh 5 is set small.