JPS6233549Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to the structure of a device that sorts threshed grains while shaking them in a threshing machine mounted on a combine harvester or a stationary threshing machine. be.

[Conventional technology]

Conventionally, this type of oscillating sorting device has a dust sorting shelf such as a chaff sieve or straw sieve extending backward from the dust outlet in the handling room, and a feed pan below the crimp screen in the handling room. However, the dust from the dust outlet is sorted by a dust sorting shelf, and the threshed grains from the crimp net are sorted by a feed pan, but the relative position of the starting end of the dust sorting shelf to the dust outlet is , is displaced by the oscillating motion, so the dust from the dust outlet spills from the starting end of the dust sorting shelf to the feed pan side and obstructs the sorting in the feed pan, while the threshed grains from the crimp screen are not properly sorted by the dust. The transfer to the racks resulted in an increase in the amount of No. 2 grains and an increase in so-called No. 3 loss in which the grains were discharged out of the machine together with dust.

Therefore, the prior art Japanese Utility Model Application Publication No. 53-91962 proposes that the swing sorting mechanism should be provided with a screen plate whose upper end is close to the crimp net at a lower position of the terminal end of the crimp net in the handling chamber, or It is proposed to prevent dust from leaking from the dust outlet to the feed pan side by providing a rubber screen plate that contacts the bottom surface of the screen.

[Problem that the invention attempts to solve]

However, in the former case, a gap must be provided between the screen plate and the crimp screen so that the screen plate does not come into contact with the crimp screen when the swinging sorting mechanism sings, and at the same time, there is a gap between the screen plate and the crimp screen. The dust is emitted together with the wind generated by the rotation of the handling cylinder, and if this screen plate is vertical, the dust will flow through the gap between the screen and the crimp net. The effect of this is quite low because it will leak out to the feed pan side when the screen is on the crimp screen.Also, if the screen plate is made of rubber and it comes into contact with the crimp screen as in the latter case, it will leak out to the feed pan side. On the other hand, the screen plate and the crimp screen rub against each other violently due to the shaking motion of the swing sorting mechanism, which not only increases the noise but also damages both the screen plate and the crimp screen. This will reduce durability.

The present invention provides a device that can reliably prevent exhaust dust from leaking to the feed pan side without causing an increase in noise or a decrease in durability.

[Means for solving problems]

Therefore, the present invention provides a swing sorting mechanism having a feed pan located below the crimp net in the handling chamber and a dust sorting shelf located under the dust exhaust port in the handling chamber, in which the terminal end of the crimp net and the The lower end of the partition plate that defines the dust exhaust port is bent obliquely toward the dust exhaust port, and the swing sorting mechanism has a U-shaped cross-sectional separation section located approximately below the partition plate. The member is arranged such that both the upper horizontal piece and the lower horizontal piece of the separation member face the dust exhaust port, the upper horizontal piece is formed to be shorter than the lower horizontal piece, and the swing sorting mechanism When the partition plate swings to the rearmost position, the upper horizontal piece approaches the lower end of the partition plate.

[Functions and effects of the idea]

As described above, according to the present invention, by bending the lower end of the partition plate toward the dust exhaust port, the dust that is vigorously discharged along with the wind from the dust exhaust port due to the rotation of the handling barrel can be removed. The upper horizontal piece of the separation member is formed shorter than the lower horizontal piece, and even if the feed pan is oriented away from the feed pan and tries to leak from the partition plate toward the feed pan while riding on the wind, the upper horizontal piece of the separation member is formed shorter than the lower horizontal piece, and the swing When the sorting mechanism is swung toward the rearmost end, the upper horizontal piece approaches the lower end of the partition plate. After the waste dust is caught in the U-shaped groove, it is pushed back toward the dust outlet by the swinging of the separation member that swings together with the swing sorting mechanism.

Therefore, it is possible to prevent the dust discharged from the dust exhaust port from leaking in the direction of the feed pan.
This can be reliably prevented by both bending the lower end of the partition plate toward the dust exhaust port and providing a separation member with a U-shaped cross section.

On the other hand, the threshed grains leaking from the terminal end of the crimp net come into contact with the back surface of the upright plate of the separating member and are guided toward the feed pan.
This reliably prevents the threshed grains from scattering toward the dust sorting rack.

According to the present invention, it is possible to prevent the dust from the dust outlet from scattering into the feed pan and the threshed grain from the crimp net from scattering onto the dust sorting shelf, thereby reducing the performance of sorting the threshed grains. It has the effect of reliably preventing increases in the amount of No. 2 grains and No. 3 loss.

Moreover, the present invention prevents the leakage of waste dust to the feed pan side without the separation member installed in the swing sorting mechanism coming into contact with the crimp net in the handling room, so the installation of the separation member reduces noise. It also has the effect of not causing an increase in water content or a decrease in durability.

〔Example〕

In the following, an embodiment will be described. In the figure, reference numeral 1 indicates a threshing machine mounted on a combine harvester. A handling chamber 3 partitioned within a machine frame 2 is equipped with a handling barrel 4, and the outer surface of the machine frame 2 is is equipped with a feed chain 5 for conveying grain culm along the handling cylinder 4.

A crimp net 8 is stretched on the lower surface of the handling chamber 3, leaving a dust outlet 7 defined by a partition plate 6 at the end thereof, and below the crimp net 8, a crimp net 8 is provided which moves back and forth in the axial direction of the handling cylinder 4. A swing sorting mechanism 9 is provided.

The swinging sorting mechanism 9 is located below a feed pan 10 located substantially directly below the crimp net 8, a dust sorting shelf such as a chaff sieve or straw sieve extending rearward from below the dust outlet 7, and the chaff sieve 11. It consists of a grain sieve 12 connected to the terminal end of the front feed pan 10 and a flow board 13 located below the grain sieve 12, and a sieve line 15 extending in the direction of the dust exhaust fan 14 is provided at the rear end of the chaf sieve 11. .

The lower end of the partition plate 6 at the terminal end of the crimp net 8 is bent obliquely toward the dust exhaust port 7 side, and the swing sorting mechanism 9 has a cross-sectional Both the lower horizontal piece 17 and the upper horizontal piece 25 at the lower end of the rising piece 18 of the separating member 16 are connected to the dust exhaust port 7.
Furthermore, the upper horizontal piece 25 is formed to be shorter than the lower horizontal piece 17, so that when the swinging sorting mechanism 9 swings to the rearmost position, the upper horizontal piece 25 It is configured to approach the lower end of the partition plate 6.

In addition, in the figure, the reference numeral 19 indicates the Karakin fan, 20 indicates the No. 1 grain receiving gutter, and 21 indicates the No. 2 grain receiving gutter. It is refluxed into the treatment chamber 3 by the thrower 22. In addition, the reference numeral 23 in the figure is a straw disposal mechanism for cutting, binding, or converging the waste dust after threshing, and 24 is a straw disposal mechanism for taking over the waste straw from the end of the feed chain 5 and conveying it to the waste straw processing mechanism 23. It is a straw removal chain.

With this configuration, the dust discharged from the dust exhaust port 7 of the handling chamber 3 falls onto the chaff sheave 11, and as it is sent along the chaff sheave 11 by its oscillating motion, it collects heavy grains. The grains fall onto the grain sieve 12, while the threshed grains leaking from the crimp screen 8 in the handling room 3 fall onto the feed pan 10 below, and are sorted by gravity by the rocking motion on the feed pan 10, while passing through the grain sieve. 12, where they are sorted.

The dust that is vigorously discharged together with the wind from the dust exhaust port 7 due to the rotation of the handling cylinder 4 is separated from the feed pan 10 by bending the lower end of the partition plate 6 toward the dust exhaust port 7 side. Even if the separation member 16 tries to leak from the partition plate 6 toward the feed pan 10 while riding on the wind, the separation member 16
The upper horizontal piece 25 is formed shorter than the lower horizontal piece 17, and is configured so that when the swinging sorting mechanism 9 swings toward the rearmost end, the upper horizontal piece 25 approaches the lower end of the partition plate 6. Therefore, after the waste dust is caught in the groove surrounded by the upper and lower horizontal pieces 25, 17 and the upright piece 18 in the separating member 16, it swings together with the swinging sorting mechanism 9. The swinging of the separation member 16 causes it to be pushed back toward the dust exhaust port 7 side.

Therefore, it is possible to prevent the dust discharged from the dust exhaust port 7 from leaking in the direction of the feed pan 10 by bending the lower end of the partition plate 6 toward the dust exhaust port and by forming the U-shaped cross section. This can be reliably prevented by both the provision of the mold separation member 16 and the provision of the mold separation member 16.

On the other hand, the threshed grains leaking from the terminal end of the crimp net 8 come into contact with the back surface of the upright plate 18 of the separating member 16, as shown by the dotted arrow in FIG.
Since it is guided toward the feed pan 10, the threshed grains are prevented from scattering to the chaff sheave 1 side,
The dust from the dust outlet 7 can be discharged to a dust sorting shelf such as a chaff sieve 11, and the threshed grains from the crimp net 8 can be discharged separately to the feed pan 10.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a threshing machine, and FIG. 2 is an enlarged view of the main part of FIG. 1. 3... Handling room, 4... Handling barrel, 6... Partition plate, 7...
...Dust exhaust port, 8... Crimp net, 9... Rocking sorting mechanism, 10... Feed pan, 11... Chaff sieve, 12... Grain sieve, 16... Separation member,
17... Lower horizontal piece, 25... Upper horizontal piece, 18
...Standing piece.

Claims (1)

[Scope of utility model registration request] In a swing sorting mechanism having a feed pan located below a crimp screen in a handling room and a dust sorting shelf located below a dust exhaust port in the handling room, an end of the crimp screen and the dust exhaust port are separated. The lower end of the partition plate is bent obliquely toward the dust exhaust port, and the swing sorting mechanism includes a separation member having a U-shaped cross section at a position substantially below the partition plate. The upper horizontal piece and the lower horizontal piece are both arranged so as to face the dust exhaust port, the upper horizontal piece is formed to be shorter than the lower horizontal piece, and the swinging sorting mechanism swings toward the rearmost part. A swing sorting device for a threshing machine, characterized in that the upper horizontal piece approaches the lower end of the partition plate when the upper horizontal piece does so.