JPS5930043B2 - Threshing machine dust removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust removal device for a thresher that discharges dust generated in a handling chamber during threshing toward a sorting chamber.

There are two types of automatic threshing machines and automatic combine harvester threshing machines: single-barrel type threshing machines that only have a handling barrel, and double-barrel type threshing machines that have a handling barrel and a processing barrel installed side by side.

Among these, the single-barrel type thresher is equipped with a frame that is integrally formed with a handling chamber and a sorting chamber below it. is provided.

The grains threshed by the handling drum fall through the mesh of the handling chamber receiving net stretched below the handling drum, are sorted by a sorting device, and then collected.

On the other hand, the waste materials generated during threshing, such as straw waste, ear scraps, and snails, are transferred in the axial direction of the handling cylinder within the handling chamber.
The dust is discharged from a dust outlet provided at the end of the receiving screen in the handling chamber onto the strorack of the sorting device, and is sorted by the strorack that swings in the axial direction of the handling cylinder.

The dust exhaust port is formed by cutting out half a circumference of the terminal end of a semi-circular arc-shaped screen frame by stretching the handling chamber receiving screen. It opens above the starting end of the strorack.

The material to be processed is carried around by the handling cylinder in the annular space between the handling cylinder and the receiving net in the handling chamber, and is discharged from the dust outlet as dust. Since the initial velocity in the direction is given, it is thrown in the direction perpendicular to the direction in which the Strorack extends.

Therefore, the dust solidifies and falls at the starting end of the strorack directly below the dust outlet, and also on one side in the width direction.

For this reason, even if the Strorack is oscillated, the transfer of the waste is not carried out smoothly and it stagnates, reducing the sorting efficiency. This has the disadvantage that the amount of dust carried around increases and a large amount of noise is generated.

The present invention has been made in view of the above points, and is capable of removing dust by bulging out an arcuate surface located on the side behind the handling chamber dust exhaust port in the direction of rotation of the handling cylinder so as to bulge away from the periphery of the handling cylinder. The object is released from the handling teeth of the handling cylinder to generate abnormal noise.In addition, an inclined plate is provided protruding from the peripheral edge of the dust exhaust port, and a vertical plate with a twisted surface is provided protruding from the peripheral edge of the dust exhaust port. By configuring the structure so that the dust is dispersed and discharged onto the Strorack by the guidance of the inclined plate, the vertical plate, and the inner surface of the bulging portion, the transport of the dust is smooth and the sorting efficiency is improved. To provide a dust exhaust device for a threshing machine that eliminates the generation of abnormal noise and makes threshing work comfortable.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side sectional view of a threshing machine incorporating a dust removal device according to the present invention, and FIG. 2 is a perspective view and a sectional view of each part of the dust removal device.

In these figures, a frame 2 of a threshing machine 1 is integrally formed with a handling chamber 3 and a sorting chamber 4 below it. A cylindrical handling cylinder 6 arranged in a shape is mounted on an axis.

In a top-handling type thresher like this threshing machine, in which the tip of the shell culm 7 is handled and threshed by positioning it above the barrel 6, the handling barrel 6 is indicated by the arrow A in FIGS. 1 and 2. Rotate in the direction shown.

The handling chamber 3 is formed by a handling cylinder cover 8 above the handling cylinder 6, and the tip side of the culm 7 is opened to form a culm insertion hole 9.

Except for the handling cylinder cover 8 and the shell culm insertion hole 9 on the periphery of the handling chamber 3 (the entire circumference corresponds to g3/4, there is a handling chamber receiver formed in an arc concentric with the handling cylinder 6). A net 10 is stretched.

This handling room receiving net 10 is stretched over a net frame 11 formed in the same arc shape as this, and this net frame 11 is fixed to the frame 2 by bolts inserted into bolt holes 11a. There is.

The net frame 11 and the handling chamber 3 are used to transport and thresh the shell culm 7 from the front side in Figure 1 to the back side of the paper, and the front side in Figure 1 and the left side in Figure 2 are the starting end side. Become.

The end portion of the net frame 11 on which the handling chamber receiving net 10 is not stretched is divided by y2 in the circumferential direction, and the side leading in the handling cylinder rotation direction A is cut out to form a dust exhaust port 12. ing.

Further, the remaining circumferential surface divided into two is provided with a bulging portion 111 that bulges in a direction away from the circumferential surface of the handling cylinder 60.
is formed by.

FIG. 2A shows a sectional view taken along line B-B in FIG. 2a, and FIG. 2C shows the same sectional view taken along line C-C.

That is, the inclined surface 11b is connected to the other inclined surfaces 11c, 11d,
11e, it is inclined so as to move away from the terminal end of the receiving net 10 in the direction of the handling cylinder axis, and another inclined surface 1
1c, 11d.

11e is formed into a trapezoidal cross section by these three surfaces.

As shown in FIG. 2 C and FIG. 2 d, which is a cross section taken along line DD, the inclined surface 11e is inclined to become lower toward the attachment side to the frame 2 and the dust exhaust port 12 side. It is configured to guide the dust discharged from the dust port 12 in an inclined direction.

Furthermore, an edge of the bulging portion 111 facing the dust exhaust port 12;
From the edge of the mesh frame 11 facing the dust outlet 12, there is a sloped plate 13.
．． 14 are connected to each other and protrude, and these inclined plates 13 and 14 are inclined in a direction away from the circumferential surface of the handling cylinder 60, that is, downward, as they move toward the tip, and the dust is discharged from the exhaust port 12. It is formed to guide the waste in an inclined direction.

In addition, FIG. 2e shows the EE cross section of FIG. 2a.

Further, a vertical plate 15 is provided to protrude downward from the end peripheral edge of the inclined plate 13 on the side that precedes in the direction of rotation of the handling cylinder, and one surface of this vertical plate 15 is directed toward the terminal end of the inclined plate 14. It is twisted in the y direction, and is formed so that the dust discharged from the dust exhaust port 12 comes into contact with it and guides it in the falling direction.

Figure 2f shows the FF cross section of Figure 2a.

Below the screen frame 11 equipped with such a dust evacuation device, there is a strorack 16 that extends in the axial direction of the handling cylinder 6 as shown by the arrow G, with the starting end below the dust evacuation port 12. The movable shelf 17 is supported on the upper end of the movable shelf 17, and swings together with the movable shelf 17, which is swung by the rotation of an eccentric cam (not shown).
The structure is such that the dust particles falling from the filter are sorted while being transferred in the direction of arrow G.

Further, a spiral conveyor and a grain lifting machine (not shown) are provided below the terminal end of the strorack 16, and are configured to transport the second grains falling from the strorack 16 and return them to the handling room 3. This return port is opened in the side plate of the frame 2 of the bulging portion of the mesh frame 11, as shown by reference numeral 18 in FIG.

Further, outside the shell culm insertion opening 9, a feed chain 20 is stretched along the handling chamber 3, and the feed chain 20 pinches and conveys the root part of the shell culm 7 together with the clamping rod 19.

In the threshing machine configured as described above, the husk culm 7 conveyed by the feed chain 20 is threshed by the handling drum 6, and the threshed grains pass through the mesh of the handling chamber receiving net 10 and are placed on the swinging shelf 17. It falls onto a sorting net (not shown) and is sorted and collected.

On the other hand, processed materials such as ear cuts generated during threshing are stored in the handling room 3.
The inside is handled and transported while being rotated by the teeth 5 and processed.

When reaching the end of the handling chamber 3, there is an inclined surface 1
1b, 11c, 11d.

Since the bulge 11e is provided, the material to be treated is released from the handling teeth 5 and diffused into the bulge.

Furthermore, the material to be processed in the bulge that is rotated around by the rotation of the handling cylinder 6 is not moved toward the attachment part to the frame 2 by the inclined surface 11e when it is guided by the inclined surface 11e, and becomes waste material and is discharged. The dust is discharged from the dust port 12, and since inclined plates 13 and 14 are provided here, the waste is guided by the inclined plates 13 and 14 and is directed to the strorack 16 as shown by arrow G. It is thrown toward the end.

In addition, for dust thrown out in the circumferential direction according to the rotational direction of the handling cylinder 6, a vertical plate 15 with a plane facing the discharge direction is provided, so that the dust is thrown away. After coming into contact with this vertical plate 15 and being deflected, it falls onto the strorack 16 below.

As the waste is guided by the inclined plate 13 and the vertical plate 15 in this way, the initial velocity for discharge, which was in the circumferential direction, is changed to the direction of transport of the Strollack 16 and is applied to the Strollack. It falls distributed over various parts without being concentrated on one side or the starting end of the top 16.

The grains are separated by the strorac 16 and light straw waste is discharged outside the machine, and the remaining ears of rice are returned to the handling room 3 as so-called second grains. Since the opening 18 is opened in the bulging portion of the mesh frame 11, the second material is also dispersed and discharged onto the strorack 16 in the same manner as the waste material, and the sorting is repeated.

As is clear from the above description, according to the present invention, there is provided an inclined plate on the peripheral edge of the dust exhaust port of the thresher that guides the dust discharged from the dust exhaust port in a direction away from the starting end of the strorack; A vertical plate is provided to allow the dust to contact and fall downward, and the peripheral surface of the handling chamber on the side that lags in the direction of rotation of the handling cylinder with respect to the dust exhaust port is bulged away from the peripheral surface of the handling cylinder. By configuring the structure to guide the dust, the dust discharged from the dust outlet is not biased toward the starting end or side end of the Strollack, but is given an initial velocity in the transport direction, and the Strollack is Since the particles are dispersed and fall to each part, the transfer becomes smooth and the sorting efficiency is significantly improved.

In addition, by providing the bulging part, the waste material is released from the handling teeth of the handling cylinder and diffused into the bulging part, which eliminates the generation of noise and allows comfortable threshing work. I can do it.

[Brief explanation of the drawing]

1 and 2 show a dust removal device for a threshing machine according to the present invention, and FIG.
Figure a is a perspective view of the dust removal device. c, d, e, and f are BB, CC, and C-C in Figure 2a, respectively.
They are DD, EE, and FF cross-sectional views. 1... Threshing machine, 3... Handling room, 6...
... Handling cylinder, 10 ... Handling chamber receiving net, 11.
...Net frame, 12...Dust exhaust port, 13, 14
... Inclined plate, 15 ... Vertical board, 16.
...Strolac, 111...bulge.

Claims (1)

[Claims] 1. A dust exhaust port 12 is opened in the front half of the handling chamber circumferential surface that is continuous with the end of the handling chamber receiving net frame 11 formed in an arc shape and that precedes the handling cylinder rotation direction A. In a threshing machine in which a strorack 16 is installed extending from below 12 toward the axial direction of the handling cylinder, a rear part of the peripheral surface of the handling chamber that lags behind the handling cylinder rotation direction A and is adjacent to the dust exhaust port 12. A bulging portion 1 that bulges away from the circumferential surface of the torso.
11, an inclined plate 14 inclined downward from the lower edge of the bulged portion 111, and an inclined plate 13 inclined downward at the edge of the mesh frame 11 facing the dust exhaust port 12. , toward the terminal end of the slanted plate 14 on the side of the bulge, there is a vertical plate 15 for guiding waste material having a twisted surface in the g direction.
A dust evacuation device for a threshing machine, characterized in that the inclined plate 13 is provided protruding downward from the end on the side that precedes in the handling cylinder rotation direction A.