JPH0121931B2 - - Google Patents

Description

[Detailed description of the invention] The receiving net of a conventional threshing machine was fixed to the machine frame, so when the wet grain culms were reaped and threshed, the receiving net became clogged with grains and small straw debris. Leakage becomes extremely bad, and as a result, an excessive amount of threshed grain accumulates in the handling chamber, and the handling teeth are planted in a spiral to process the broken ears and long straw generated in the handling chamber and transfer it to the culm opening side. Despite this, the transfer performance deteriorates, resulting in an abnormally large load being applied to the handling cylinder, resulting in decreased threshing performance and even damage to the constituent members of the handling chamber.

The present invention is aimed at improving the above-mentioned drawbacks, and the lower part of the handling chamber is opened, and the cross section of this open part is formed into an arc shape so as to substantially follow the rotation locus of the handling teeth. A receiving net body with a large mesh is supported so as to reciprocate in a direction substantially parallel to the handling cylinder axis, and a swinging sorting body having at least one stage of swinging shelves is installed below the receiving net body. It is characterized by the fact that

The embodiment shown in the drawings will be described below. In FIGS. 1 to 3, reference numeral 1 denotes a handling cylinder which is mounted on the front side plate 3 and rear side plate 4 of the handling chamber 2 by a handling cylinder shaft 5,
The grain threshing plate 6 that covers the top surface extends from the handling port 7a to the back side through the top of the handling barrel 1, and the lower part of the back side has a tapered widening part 6a that is wide on the supply port 7 side and narrow on the discharge culm port 8 side. A processing cylinder 10 with a receiving net body 9 attached at the bottom is located below the back side of the grain removal plate 6.
is mounted on a shaft.

A receiving net 11 having a large number of leakage holes (15 to 25 mm in diameter) and having an arcuate cross section as shown in FIG. The straw sheave 15 is fixed to the upper part of the swinging structure 13, and a straw sheave 15 extending toward the cross-flow fan 14 is provided at the rear end thereof. In addition, the above-mentioned receiving net body 1
1 may be a crimp net with a mesh of 15 to 25 mm on one side.

Further, a transfer plate 1 provided below the receiving net body 11
The sorting net 17 extended at the rear end of the screen 6 faces the first receiving gutter 18, and the stroke rack 20 protruding from the upper end of the first flow plate 19 faces the second receiving gutter 21. The second thrower 23, which is close to the opening 22 and attached to the transfer end of the second receiving trough 21, throws the second object onto the processing cylinder 10, so that the processing cylinder 10 also processes the second object.

In the drawing, 24 is a blower fan provided below the front end of the transfer plate 16, 25 is a No. 4 funnel, and 25a... are notched holes.

Next, to explain the operation, the grain side of the grain culm, which is conveyed while the stock part is held between the feed chain 27a and the clamping rail 27b, is inserted into the handling chamber 2 from the supply port 7 and is connected to the handling cylinder 1 and the threshing plate 6. The threshing process is carried out by
Since the handling teeth of the handling cylinder 1 and the processing teeth of the processing cylinder 10 rotate in opposite directions at the overlapped portion as shown in FIG. The long straw is combed out from the handling teeth and processed, and all of the threshed grains fall onto the receiving net body 11, which, together with the swinging structure 13, is swung in a direction parallel to the handling barrel axis 5. Since the grains are moving, the threshed grains leak onto the transfer plate 16 while being rapidly forcedly transferred without stagnation or clogging.

The long straw and ears remaining on the receiving net body 11 are transferred to the straw sieve 15 and are transferred and sorted, and the remaining grains, ears, etc. are transferred from the straw sieve 15 to the rear of the sorting net 17 and onto the straw rack 20. The straw debris is discharged by the cross-flow fan 14 to the dust outlet 22 behind it.

In addition, the grains and small straw waste that have leaked onto the transfer plate 16 are screened while being sieved by the sorting net 17, and the grains fall first into the receiving gutter 18 and are carried out of the machine, and are carried out through the screen. The upper material and the second material leaking from the straw sieve 15 are transferred and sorted by the straw rack 20, and the second material falling into the second receiving gutter 21 is returned to the processing cylinder 10 by the second thrower 23. The straw waste is discharged from the dust outlet 22 to the outside of the machine.

Furthermore, the waste straw is pinched and conveyed rearward by a straw removal conveyor consisting of a straw removal chain 26 and a clamping rail, and during this time, the stick grains that have fallen off from the waste straw fall into the No. 4 funnel 25.

An arc-shaped receiving plate 27 is provided at the upper front end of the receiving net body 11 to prevent the threshing machine from falling directly onto the transfer plate 16 even when the receiving net body 11 swings.

Next, another embodiment will be explained with reference to FIGS. 4 to 6. In this embodiment, the periphery of a receiving net 11a having a coarse mesh (15 to 25 mm on a side, preferably about 20 mm) through which grain threshing rapidly leaks is formed into an arc shape. Attached to the horizontal frames 28, 28 and the inverted L-shaped vertical frames 29, 29, the vertical frames 29, 29
A plurality of rails 30, 30 each having a U-shaped cross section are fixed to the outer surface of the threshing machine, and are supported by shafts 31a on the side plate on the handling port 7 side of the threshing machine and the lower part of the expanded portion 6a of the threshing plate 6. roller 31... (at least 2 on one side)
The receiving net 11a is supported so as to be movable back and forth by being loosely engaged with the rails 30, 30, and the front horizontal frame 28 is connected to the ring 33 fitted on the outer periphery of the eccentric ring 32. A pulley 34 attached to the shaft of the core ring 32 is driven by a pulley 35 on the shaft of the blower fan 24 via a belt 36.

Therefore, since the receiving net 11a moves back and forth during the threshing operation, the grains being threshed, small straw waste, and grains with twigs generated in the handling room 2 are removed by the receiving net 11a moving back and forth.
The remaining long straw and ears are quickly dropped into the sieve, and the remaining long straw and ears are passed over the horizontal frame 28 facing between the rear handling teeth, which has a wide interval I between the handling teeth of other parts, and are passed through the dust inlet 37. It is easily released outside the handling room 2.

The grains and the like leaked from the receiving net 11a are transferred and sorted by a mesh plate 11b made of a punched iron plate provided at the upper stage of the swinging structure 13, and the grains and the like are transferred to the rear of the mesh plate 11b and the dust inlet. The long straw etc. discharged from 37 is transferred to the straw sieve 15 and transferred to the transfer plate 16.
The materials leaking upward are transferred to the sorting net 17, whereafter they are transferred and sorted in the same way as in the previous embodiment.

As described above, the present invention opens the lower part of the handling chamber, and in this open part, a receiving mesh body having an arcuate cross section and a large mesh size is installed in the open part, so as to substantially follow the rotation locus of the handling teeth.
It is supported so that it can reciprocate in a direction substantially parallel to the handling cylinder axis, and a swinging sorter having at least one stage of swinging shelves is installed below the receiving net, so that the grain threshing inside the handling room can be done without receiving the grain. It reciprocates in a direction approximately parallel to the axis of the handling barrel while being supported by the mesh along the rotational locus of the handling teeth, making it possible to perform sufficient shedding processes such as cutting ears of grain. However, even if the grain is wet, it is simultaneously subjected to circumferential agitation by the handling teeth and agitation in the axial direction of the handling barrel due to the reciprocating motion of the receiving net that is approximately perpendicular to the circumferential agitation, which causes the degrain to become lumpy. It is possible to carry out rapid and reliable sieve sorting without clogging or clogging.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Fig. 1 is a cross-sectional view, Fig. 2 is a longitudinal sectional plan view, Fig. 3 is a longitudinal sectional side view, Fig. 4 a is a transverse sectional view of another embodiment, Fig. 4 b is a perspective view of the receiving net support part, and Fig. 5 is a longitudinal sectional view. The figure is a longitudinal sectional plan view of the same as the above, and FIG. 6 is a longitudinal sectional side view of the same. 1... handling cylinder, 2... handling room, 11... receiving net body, 1
1a... Reception net, 13... Swinging structure.

Claims (1)

[Claims] 1 Open the lower part of the handling chamber, and insert into this open part a receiving mesh body with an arcuate cross section and a large mesh so as to roughly follow the rotation locus of the handling teeth in a direction approximately parallel to the handling barrel axis. 1. A receiving net for a thresher, characterized in that the receiving net is supported for reciprocating motion, and a swing sorting body having at least one stage of swinging shelves is installed under the receiving net.