JP3729982B2 - Threshing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a threshing device mounted on a combine, a harvester or the like.
[0002]
[Prior art]
Some threshing devices are provided with a processing cylinder connected to a handling cylinder for the purpose of achieving more accurate threshing. The processing cylinder is mainly used for threshing the grain from the spiked rice bran, and the mixed grain (hereinafter referred to as cocoon kernel) is released from the processing cylinder. This cocoon grain is a bran formed by a rear wall of No. 4 that constitutes No. 4 provided at the rear of the handling cylinder, and a suction rotating plate that is passed over a suction cylinder provided at the rear of the processing cylinder. It passes through the space and is guided to a sorting plate provided on the side (front) of the processing cylinder. In this case, the release space is set so that the grains are evenly distributed on the sorting plate.
[0003]
[Problems to be solved by the invention]
However, in the case of normal cocoon grains, this is sufficient. However, when the weed grains are mixed with high-humidity cereal grains or cereal grains, the specific gravity increases and the cocoon grains are released farther. Therefore, the radiation is biased toward the downstream position in the radiation direction on the sorting plate, and the sorting performance is lowered.
The present invention solves such a problem, and enables high-humidity materials and weed-mixed materials to be uniformly released on the sorting plate.
[0004]
[Means for Solving the Problems]
Under the above-described problems, the present invention provides the sorting cylinder (14) and the suction cylinder (16) arranged at the lower left side and the rear lower side of the processing cylinder (12) according to claim 1, respectively. ) Is formed on the left side of No. 4 with a No. 4 front wall (40) and a No. 4 rear wall (42), and a suction cylinder is formed from the No. 4 rear wall (42). In the threshing device which passed the suction rotator plate (58) over (16), it passes from the processing cylinder (16) formed by the No. 4 rear wall (42) and the suction rotator plate (58) to the sorting plate (14). A part of the wire mesh (34) that is stretched leaving a part of the rear part on the left side surface of the processing cylinder (12) is taken into a radiation space (60) formed in a substantially mountain shape in a side sectional view , and this radiation space ( A threshing apparatus is provided, which is provided with a shielding plate (64) having a shape substantially the same as the cross-sectional shape of (60) and blocking the release space (60) .
[0005]
Naturally, the grains that are released from the processing cylinder fly not only in this release space, but also in the fourth and other spaces below the release space. However, the grains with high specific gravity that are released relatively far away inevitably fly in the upper release space, so if a shielding plate is provided here in the full release space , Decreases the flying power of the roasted grain, preventing it from falling down toward the downstream side of the release direction.
[0006]
Further, the present invention is a means in which a wire mesh is stretched on the left side surface of the above-described processing cylinder while leaving a part of the rear part, and a radiating space is formed at the rear part of the processing cylinder with a part of the metal mesh. The above-described shielding plates each provide means having substantially the same shape as the cross-sectional shape of the radiation space.
[0007]
In general, the processing cylinder has a wire mesh stretched on the left side surface (front surface), leaving a part of the rear part, and has a function of sending back the processed kernel grains. Therefore, grains subjected to a strong centrifugal force are usually released from the wire mesh portion, and shavings having a low specific gravity are usually released from a portion having no wire mesh behind.
[0008]
In such a case, if the radiating space is formed at the rear part of the processing cylinder by partially taking in the rear end of the wire mesh in the cross section, even if a shielding plate exists in the middle, the wire mesh It is possible to efficiently suck the chips discharged from the portion without the air with the suction cylinder. Moreover, if the shielding plate has substantially the same shape as the cross-sectional shape of the release space, it affects all the grains that fly in the release space.
[0009]
Further, according to the present invention, in the above-described means, the radiating space has a substantially inverted U-shaped cross section that is wider toward the lower side, and the shielding plate has a lower part in the radiating direction downstream in the rear view. Provided is a means in which the means formed obliquely and the shielding plate are attached at a position slightly downstream from the middle of the sorting plate in the rear view.
[0010]
These means contribute to giving the deterrence at the most suitable place while giving strong deterrence to the cereal grains that fly far above the release space and reach far away. Contributes to even distribution up. Furthermore, the effect which does not hinder the dispersion | distribution and release of the normal grain which flies in the lower part of the release space is also exhibited.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a threshing apparatus showing an example of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. 1, but the threshing apparatus in a combine or the like is from the front, a handling cylinder 10, a processing cylinder 12, and a sorting machine. A plate 14 and a suction cylinder 16 are disposed. The directions such as front and rear, left and right, and up and down here are based on the state in which the operator is sitting on the seat of the aircraft.
[0012]
The handling cylinder 10 is a treatment chamber 18 provided in the front part of the threshing device, in which handling teeth 22 are implanted on the outer periphery of a drum 20 that rotates vertically around an axial center placed in the front-rear direction. is there. A sorting wire mesh 24 is provided in the lower part of the handling chamber 18, and a cereal transfer device 26 is provided on the left side of the handling cylinder 10. The cedar is rushed into the handling chamber 18 with the tip of the cereal, transferred by the cereal transfer device 26, and applied to the teeth 22 during that time.
[0013]
The processing cylinder 12 is housed in a processing cylinder chamber 28 formed in a state of being partially overlapped with the right side rear of the handling chamber 18, and is arranged on the outer periphery of a drum 30 that rotates vertically around an axial center directed in the front-rear direction. The treatment tooth 32 is implanted. A wire mesh 34 is stretched on the front surface (left side surface) of the processing cylinder 12 leaving a part of the rear part.
[0014]
The processing cylinder 12 separates the broken cocoon grains flowing from the handling chamber 18 into cocoons and swarf with the processing teeth 32, and releases them to the left (front) and sends them to the rear. At this time, the presence of the wire mesh 34 prevents the sawdust from permeating, and contributes to discharging the waste from the rear portion without the wire mesh 34.
[0015]
Formed on the left side of the processing cylinder 12 is a No. 4 ridge 38 that guides the grains that have entered the ridge called No. 4 to the sorting plate 14. The fourth wall 38 is partitioned by a front wall 40 and a rear wall 42, and a left wall 44 that forms the left wall of the threshing device and a right wall 46 that covers the left side of the suction cylinder 12. The left and right ducts are separated from each other, and send waste dust to a dust discharge port 36 formed at the outlet of the suction drum 16 by a tang wind to be described later.
[0016]
The sorting plate 14 is provided from the lower side of the handling chamber 18 to the lower left side of the processing cylinder chamber 28, and swings the shelf on which the sorting combs 48 are arranged. The sorting plate 14 separates the grain and the sawdust with the sorting comb 48 by the wind of the tang 50 provided below, the sawdust is sent to the dust outlet 36, and the grain is sent by the grain discharging mechanism 52. Take out.
[0017]
The suction cylinder 16 is accommodated in a suction cylinder chamber 54 provided below the processing cylinder 12 and above the sorting plate 14 with substantially the same width as this. The flow fan 56 is mainly used. The suction drum 16 assists the release of the grains from the processing drum 12 and sucks the dust on the sorting plate 14.
[0018]
A suction rotation plate 58 is passed from the fourth rear wall 42 to the inlet of the suction cylinder 16. In this case, the right wall 46 described above extends to the rear part of the threshing device, but only the space surrounded by the fourth wall rear wall 42 and the suction rotation plate 58 is opened. Therefore, only this space communicates directly from the processing cylinder 12 to the sorting plate 14, which is referred to herein as a “radiation space 60”. In addition, a waste disposal device 62 for treating soot is provided behind the processing cylinder 12.
[0019]
Of the straw grains that are released from the processing cylinder 12, those that pass through the release space 60 reach the sorting plate 14 directly. On the other hand, since the right wall 46 is about the height of the processing cylinder 12, the lower space is blocked by the right wall 46, but leads to the sorting plate 14. Also fly.
[0020]
The radiation space 60 has a substantially inverted U-shaped cross section that is wider toward the bottom. This is because the density of straw grains that are released in the lower part is high, and if this part is widened, the distribution becomes smooth. The radiating space 60 is formed at the rear part of the processing cylinder 12, and at this time, it is preferable that the rear end of the wire mesh 34 comes to a part of the cross section.
[0021]
In the present invention, a shielding plate 64 that blocks the radiation space 60 is attached to the radiation space 60 described above. Although the attachment form of the shielding board 64 is not ask | required, what is necessary is just to stop so that it may not move. Specifically, it can be considered to be detachably stopped with a bolt or the like, or integrated by welding. In the former case, there is an advantage that the mounting position can be adjusted, or that it can be removed when it is unnecessary with a normal cereal grain.
[0022]
Naturally, the grains that are released from the processing cylinder 12 are not limited to the release space 60, but naturally the space below it also flies. However, cereal grains that have a high specific gravity and are released relatively far away inevitably fly through the upper release space 60, so if a shielding plate 64 is provided here, they are released far away. This will reduce the flying power of the cocoon kernels and prevent them from falling to the downstream side in the release direction. In this case, when the shielding plate 64 has substantially the same shape as the cross section of the release space 60, the shielding effect is given to all the grains that fly in the release space 60.
[0023]
Of the cocoon grains released from the processing cylinder 12, the grains pass through the wire mesh 34, but the swarf is usually shielded by the wire mesh 34 and released from the rear where it does not exist. Therefore, if the release space 62 partially captures the rear end of the wire mesh 34 in the cross section, the suction effect of the waste dust intensively discharged from the portion without the wire mesh 34 is great. In this case, if the shielding plate 64 is present in the entire radiation space 60, the soot is also shielded by this, but the soot is less affected by the specific gravity. In any case, the shielding plate 64 may be provided only in a portion where the wire mesh 34 exists.
[0024]
In order to disperse the bran kernels evenly on the sorting plate 14, the shape of the rear view of the shielding plate 64 and its mounting position are also important. The rear view shape of the shielding plate 64 is preferably formed so that the upper part is perpendicular to the radiating space 60 and the lower part is obliquely inclined downward toward the downstream side. Because it gives a rapid deterrent to cereal grains that fly above the far-reaching high rank, and does not give a very strong deterrent to the cereal grains that fly midway that is not released far away It is. Moreover, the diagonal shape of the lower part also has the effect of not reducing the flying force in the case of a normal potato grain.
[0025]
The attachment position of the shielding plate 64 in the radiation space 60 is preferably the middle of the sorting plate 14 in the rear view or a position slightly downstream in the radiation direction. This is because, due to the relationship between the processing cylinder 12 and the sorting plate 14, the grains are dispersed most effectively on the sorting plate 14 and released.
[0026]
【The invention's effect】
As described above, according to the present invention, the cereal grains that are mixed with high-humidity materials and weeds and have a relatively high specific gravity and are released far away are weakened by the shielding plate. Prevents the sorting function from degrading.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a threshing apparatus showing an example of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
[Explanation of symbols]
12 Processing Cylinder 14 Sorting Plate 16 Suction Cylinder 38 No. 4 ４０ 40 No. 4 樋 Front Wall 42 樋 No. 4 Rear Wall 58 Suction Rotating Plate 60 Radiation Space 64 Shielding Plate

Claims (4)

A sorting plate (14) is arranged on the lower left side of the processing cylinder (12), and a suction cylinder (16) is arranged on the lower rear side. The front wall (40) and the fourth wall are located on the left side of the processing cylinder (16). In the threshing apparatus which forms the 4th wall (38) divided front and rear with the rear wall (42) and passes the suction turn plate (58) from the 4th wall rear wall (42) to the suction drum (16), The left side of the processing cylinder (12) that leads from the processing cylinder (16) formed by the No. 4 rear wall (42) and the suction wrapping plate (58) to the sorting plate (14) is left with a part of the rear part. the wire mesh (34) the Hoteki space formed takes in a mountain view substantially side sectional part (60) which is, Hoteki space (60 to substantially the same shape as the sectional shape of the Hoteki space (60) ) threshing apparatus characterized in that a shielding plate (64) for shielding.   The threshing apparatus according to claim 1, wherein the free space has a substantially inverted U-shaped cross section that is wider toward the bottom.   The threshing device according to claim 1 or 2, wherein the shielding plate is formed obliquely such that a lower portion thereof is inclined downstream in the release direction in a rear view.   The threshing device according to any one of claims 1 to 3, wherein the shielding plate is attached to a position slightly downstream from the middle of the sorting plate in the rear view.

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