JPH0212840Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, a swinging sorting body of a threshing machine is composed of a transfer plate facing the lower surface of the receiving net in the handling chamber and the lowest leakage sorting part extended to the terminal end of the transfer plate. A flat plate is installed at the bottom that moves forward and backward toward the most leakage sorting section, and when there is little threshing, the flat plate is pulled out and wraps with a part of the most leakage sorting section, and when there is a lot, it is pulled back to reduce the leakage area. It is already known that it can be expanded.

However, when the flat plate was pulled out in order to deal with a small amount of grain threshing, the flat plate did not participate in the transfer of the threshed grains, and the most leakage sorting section could not transfer the grains sufficiently.

Therefore, by installing a corrugated transfer plate that flips back and forth around the end of the transfer plate, it was possible to limit leakage and promote transfer, but there was a lot of straw and awns between the corrugated transfer plate and the transfer plate. Another drawback was that the grains were stuck and the degrain was deposited.

The present invention aims to improve the above-mentioned drawbacks, and includes a transfer plate facing the lower surface of the receiving screen of the handling room in the sorting air passage from the bottom of the handling room to the dust exhaust port.
In a threshing machine in which a swinging sorting body is installed, which is made up of a first leakage sorting body extending to the end thereof and facing the first receiving gutter, and a second leakage sorting part provided on the downstream side thereof, the swinging In a threshing machine equipped with a sorting body,
Guide rails each having a U-shaped cross section extending from the lower surface of the transfer plate to the uppermost leakage sorting part are attached to the left and right side plates of the oscillating sorting body, and the upper protrusions of these guide rails are attached to the transfer plate. Both sides of the filter are fixed, both sides of the most leakage sorting body are attached to the lower protrusion, and a corrugated transfer plate is slidably fitted into the groove formed between the upper and lower protrusions. It is characterized by:

The embodiment shown in the drawings will be explained below.1
is a handling cylinder that is mounted on a shaft in the handling chamber 2, and a swinging sorting body 5 is installed from below the receiving net 3 to the dust sorting chamber 4, and the main sorting section in the lower stage is the receiving net 3. The transfer plate 6 facing downward, the screening net 8 (or grain sieve) connected to the end thereof and forming the first leakage sorting part and facing the top of the receiving trough 7, and the first flow plate 10. It consists of a second leakage sorting section consisting of a stroke rack (or chaff sieve) 11 extending above and facing the second receiving gutter 9, and the upper sub-separating section is connected to the dust inlet at the end of the handling chamber. A transfer plate 13 made of a corrugated plate that receives and transfers long straw, ear cuttings, etc. discharged from 12, and a suction windmill 1 extended thereto.
4 and a stroke rack (or chaff sheave) 15.

Further, the air blower 16 provided below the starting end of the handling chamber 2 is connected to the sorting net 8 and the upper stroke rack 1.
5 and the main sorting air path A which leads to the suction air path formed by the suction windmill 14, and the stroke rack 11 through the space between the first receiving gutter 7 and the bottom plate 17 and above the second receiving gutter 9. Dust exhaust port 18 after blowing through
It also constitutes a sub-selection air path B that blows out air.

The sorting net 8 of the main sorting section is lower than the corrugated portion 6a of the transfer plate 6, and the corrugated portions 6a of the transfer plate 6 are provided on the inner surfaces of both side walls of the oscillating sorting body 5, respectively.
A pair of guide rails 19, 19 extending from the lower surface of a to the upper part of the sorting net 8 and having a U-shaped cross section are fixed, and the transfer plate 6 is fixed to the upper protrusion of the guide rails 19, 19. 8 is attached to the lower protrusion.

Further, a corrugated transfer plate 20 is slidably fitted into the guide groove of the guide rails 19, 19.
Both ends of the adjusting rod 21 fitted into the terminal end of the waveform transfer plate 20 are loosely fitted into elongated holes 22, 22 bored in the side plates 5a, 5a of the swinging sorter 5 and the guide rails 19, 19. The front and rear parts of the transfer plate 20 are formed into flat parts so as to be in sliding contact with the lower surfaces of the projections above the guide rails 19, 19.

23 is a T-shaped adjustment plate, the base of which is rotatably supported by a support shaft 24 on the side plate 5a, and a long hole 25 in the vertical direction provided at the center of the upper part has the adjustment plate The end of the rod 21 is inserted, and an arcuate hole 26a is provided on one side of the upper part of one adjusting plate 23, and a round hole 26b is provided on the other side.
6b is matched with either the front or rear two nuts 27 or 28 fixed to the side walls 5a, 5a, and screwed together with an adjustment bolt 29.

Note that 31 in the drawing is an opening/closing lid provided on the machine wall.

In the above-mentioned apparatus, small straw waste and grains from the threshed grain generated in the handling chamber 2 fall from the receiving net 3 onto the transfer plate 6 of the oscillating sorter 5 and are transferred to the sorting net 8. The small straw waste is blown away by the main sorting wind and removed, the grains leak and flow into the first receiving trough 7, and the straw waste including the second straw remaining on the net passes through the transfer plate 11a. Transferred to the stroke rack 11 for further sorting, the second item falls into the second receiving gutter 9 and is returned onto the transfer plate 6 by the second thrower 30,
The straw waste is discharged from the dust outlet 18 to the outside of the machine.

In addition, the long straw including ear cuts is discharged from the dust outlet 12 onto the transfer plate 13, and from the transfer plate 13, it is transferred to the straw rack 15, where small straw waste, ear cuts, and single grains are removed. The straw waste is discharged outside the machine by the suction windmill 14.

When sorting the threshed grains of rice, since the amount of grains is large, the adjustment plate 28 is screwed into the front nut 27 with the adjustment bolt 29 as shown by the dotted line in FIG. When the adjusting plate 23 is tilted and adjusted within the range of the circular arc hole 26a according to the sorting conditions such as
9 and slide back and forth. At that time, when the adjustment plate 23 is tilted most forward, the waveform transfer plate 20
The rear end and the rear end of the corrugated portion 6a substantially coincide with the front end of the sorting net 8, so that the leakage area of the sorting net 8 is maximized,
When the adjusting plate 23 is tilted rearward from this state, the corrugated transfer plate 20 sequentially advances rearward to reduce the leakage area of the sorting net 8.

When sorting the threshed grains of wheat, since the amount of grain is smaller than that of rice, the adjusting plate 23 is tilted backward as shown by the chain line in FIG. 3, and the round hole 26b is aligned with the rear fixing nut 28. When the adjusting bolt 29 is screwed on, the corrugated transfer plate 20 will move forward to cover the sorting net 8, and its leakage area will be much smaller than in the case of rice.

During such sorting process, a lot of cut straw, awns, etc. are mixed into the threshing, but the corrugated transfer plate 20 is guided by the guide rails 19, 19, which have a U-shaped cross section, and the corrugated portion 6a of the transfer plate 6 Since it advances and retreats toward the sorting net 8 while slidingly contacting the lower surface of the grain, the awns and the like do not become stuck between the corrugated portion 6a and the corrugated transfer plate and deposit the threshed grains.

As mentioned above, the present invention includes a sorting air passage from the bottom of the handling room to the dust exhaust port, a transfer plate facing the lower surface of the receiving gutter in the handling room, and a transfer plate extending to the end of the air passage and facing the uppermost receiving gutter. In a threshing machine equipped with a swinging sorter consisting of a leakage sorter and a second leakage sorter provided on the lower side thereof, in a threshing machine equipped with the swinger sorter, the right and left sides of the swinger sorter are A guide rail having a U-shaped cross section extending from the bottom surface of the transfer plate to the uppermost leakage sorting part is attached to each side plate of the transfer plate, and both sides of the transfer plate are fixed to the protrusions at the top of these guide rails.
Both sides of the first leakage sorting body were attached to the lower protrusion, and the corrugated transfer plate was slidably fitted into the groove formed between the upper and lower protrusions, so that the first leakage sorting body When the corrugated transfer plate is moved and adjusted to extend or contract the leakage area so that it protrudes to the most leakage sorting part, the threshing can be transferred reliably, and the guide rail moves the corrugated transfer plate to the bottom surface of the transfer plate. Since it is guided while being held in sliding contact with the corrugated transfer plate, cutting straw and awns do not get stuck between the corrugated transfer plate and the transfer plate on the upper side, which prevents grain removal from accumulating and resulting in poor sorting. can do.

In addition, the U-shaped guide rails on the left and right fix and support the transfer plate on the upper side with the upper protrusion on both sides, and the lower protrusion on both sides of the lowest leakage sorter on the lower side. In order to support the parts, the material to be sorted can be transferred smoothly from the transfer plate to the first sorting body, and the sliding gap of the corrugated transfer plate can be kept constant to allow the corrugated transfer plate to slide smoothly. Can be done.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a vertical cross-sectional view of a threshing machine for a combine harvester, Figure 2
The figure is a side cross-sectional view of the main part, and FIG. 3 is a cross-sectional view of the same. 3... Receiving net, 5... Oscillating sorting body, 6... Transfer plate, 8... Sorting net, 19... Guide rail, 20
...Corrugated transfer plate.

Claims (1)

[Scope of utility model registration request] In the sorting air passage from the bottom of the handling room to the dust exhaust port, there is a transfer plate facing the bottom of the receiving gutter in the handling room, and the first leakage sorting body that extends to the end and faces the top of the receiving gutter, and its lower part. In a threshing machine equipped with a swinging sorting body consisting of a second leakage sorting section provided on the side, the lower surface of the transfer plate is mounted on the left and right side plates of the swinging sorting body. Guide rails each having a U-shaped cross section extending from the top to the top of the leakage sorting part are installed, and both sides of the transfer plate are fixed to the upper protrusions of these guide rails, and the lower protrusions are fixed to the upper protrusions. A sorting device for a thresher, characterized in that both sides of a filter leakage sorting body are attached, and a corrugated transfer plate is slidably fitted into a groove formed between the upper and lower projecting pieces.