JPH05974B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a No. 2 return device for returning No. 2 items remaining after sorting in a threshing machine to a threshing section for re-sorting.

In an independent mobile or fixed threshing machine that does not have a combine thresher or reaper, the grains threshed by the handling barrel in the handling chamber fall through the mesh of the handling chamber receiving net, and are then transferred to the sorting device. are sorted and collected. On the other hand, the processed materials such as straw waste, hooks, and ear cuts generated during threshing fall from the dust outlet in the handling room and are sorted by a sorting device, where some grains are collected and light straw waste is removed. etc. are sucked up by a dust suction device and discharged outside the machine. The processed material that remains after being sorted in this way is called the second material.
After the grains fall onto the conveyor at the bottom of the sorting room and are conveyed, they are scraped up by the No. 2 grain lifter at the end of the conveyance and lifted up and conveyed inside the No. 2 return cylinder. The second item lifted and transported is returned to the handling room,
It merges with the processed material that is moving near the reduction port, and the sorting is repeated.

In the above-mentioned No. 2 return operation of the threshing and sorting work by the threshing machine, the No. 2 product returned from the No. 2 return port to the passage diagonally above the handling barrel in the handling chamber is guided by a guide plate and returned to the handling chamber. into a cylindrical passage between the handling cylinder and the handling chamber receiving net.

However, in the conventional No. 2 reducing device, when threshing grain culms wet with morning dew, etc., so-called wet treatment, the wet No. 2 grains adhere to the guide plate, and the No. 2 grains that are subsequently reduced are removed. This has the problem of reducing the sorting efficiency because it obstructs the guidance of the objects and directs them toward the end of the sorting chamber.

The present invention has been made in view of the above points, and includes a space in the upper part of the handling chamber/frame side plate space, which communicates with the sorting chamber and has a No. 2 reduction port opened at the rear end of the upper part.
A second guide plate is installed from approximately the same height as the lower edge of the second reduction port, extends coaxially, and blocks approximately half the width of the space, and is provided so as to be inclined lower toward the opening of the treatment chamber. By providing a No. 2 flow plate below the No. 2 guide plate, which slopes so that its tip is lowered from the lower edge of the No. 2 reduction port into the space, the No. 2 flow plate is usually used to mainly control the No. This invention provides a No. 2 reducing device for a threshing machine that makes it possible to always ensure good sorting efficiency by guiding the No. 2 to the starting end of the sorting chamber using the No. 2 flow plate during wet handling, etc. . Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 show an embodiment of the No. 2 reducing device according to the present invention, FIG. 1 is a longitudinal sectional view of a threshing machine implementing this, FIG. 2 is a side sectional view, and FIG. 3 is a side sectional view. FIG. 2 is a sectional view taken along line AA in FIG. 1; In the figure, the frame 2 of the threshing machine 1 is integrally formed with a handling chamber 3, a sorting chamber 4 below it, a culm behind the sorting chamber 4, and a dust suction chamber 5. A chamber cover 6 and a casing 8 with a handling port 7 opened.
and an arcuate handling chamber receiving net 9, forming a substantially cylindrical shape. Further, in the front and back direction of the handling chamber 3, there is a front plate 11 having a grain culm supply port 10 and a grain culm discharge port 12.
The grain culm supply port 10 and the grain culm discharge port 12 are connected to the handling port 7.
are connected. Further, a space 15 communicating with the sorting chamber 4 is formed between the handling chamber 3 and the frame side plate 14. Inside the handling chamber 3, a threshing barrel 17 having a large number of handling teeth 16 on its circumferential surface is mounted on a shaft. In the type threshing machine 1, the handling cylinder 17 rotates in the direction shown by arrow B in the figure. The one indicated by the code 19 is the handling port 7.
It is an endless belt for conveying grain culms stretched along the ridge, and above it, a clamping rod 20 having a U-shaped cross section is biased toward the endless belt 19 side by a clamping spring 21 to support it. The grain culm 18 is configured to be conveyed while being held by the root part of the grain culm 18 between the clamping rod 20 and the endless band 19.

On the other hand, in the sorting chamber 4, a swinging shelf 24 is formed in a box shape that opens upward, is supported by an eccentric cam 22 and a swinging arm 23, and swings with the rotation of the eccentric cam 22.
is provided, and inside it there is a receiving net 9 for the handling room.
a grain sorter 25 that sorts grains that fall through the mesh; and a grain sorter 25 that sorts the grains that are discharged from the dust outlet 26 provided at the rear end of the handling chamber 3. 27 and 28 are arranged. Swing shelf 2
Below 4, there is a winnowing machine 29 that is equipped with a plurality of blades and generates a sorting wind, a No. 1 spiral conveyor 30 that conveys the grains falling from the sorting body 25, and a first spiral conveyor 30 that conveys the grains that are left behind after sorting and that fall from the sorting body 28. The No. 2 spiral conveyor 31 that conveys the so-called No. 2 material to be sorted is
The shafts are mounted parallel to each other. Reference numeral 32 denotes a No. 2 grain lifting machine fixed to the shaft end of the No. 2 spiral conveyor 31 that projects outside the frame, and is covered with a shell 33 so as to scoop up the No. 2 grains transported by the No. 2 spiral conveyor 31. It is composed of One end of a No. 2 reduction cylinder 34 is connected to the discharge port of the barrel 33, and the other end of this No. 2 reduction cylinder 34 is connected to the space part 1.
It is connected to a No. 2 reduction port 35 opened at the upper end corner of the rear plate 13, which is the rear end of the upper part of the rear plate 5. By doing this, the No. 2 grains are lifted up and conveyed inside the No. 2 return tube 34 by the No. 2 grain lifting machine 32 and returned into the space 15 from the No. 2 return port 35 .

Therefore, to explain the structure inside the space 15, the upper part of the space 15 and the inside of the handling chamber 3 are communicated with each other through an opening 36 extending over the entire length of the handling chamber 3. Approximately half of the direction is vertically blocked by a guide plate 37 that spans the entire length. This guide plate 37 is inclined so as to gradually become lower from a position approximately at the same height as the lower edge of the No. 2 reducing port 35 toward the lower edge of the opening 36. It is configured to guide the inside of the handling chamber 3. In addition, a guide plate 37 is provided in the upper part of the space 15 and in the center of the opening.
An arcuate No. 2 reduction guide 38 is provided which contacts the No. 2 and changes direction. Further, from the lower edge of the second reduction port 35 to the upper part of the space 15, the space 1
5 Protrudes in an inclined manner so that the tip is lower 2
A No. 2 flow plate 39 is protruded, and a No. 2 reduction port 35 is provided.
Guide the number 2 returned from the space part 15
It is configured to lead to the front part of the sorting chamber 4 through the. A middle plate 40 is connected to the lower end of the second flow plate 39 and is formed into an arc along the top edge of the tooth 16 and follows the circumferential locus of the tip of the tooth 16.
Also, a part of the handling room 3 and the sorting room 4 are blocked off from each other. Reference numeral 41 denotes a zigzag-shaped separation plate located in the second falling passage on the handling chamber 3 side formed between the middle plate 40 and the rear plate 13 and joined to the lower end of the guide plate 37. The structure is such that the second part is brought into contact with the second part to loosen the lump.

On the other hand, in the exhaust culm and dust suction chamber 5, there is an endless belt 42 for transporting the threshed grain culm, that is, the waste straw, which is carried over from the endless belt 19, and this endless belt 1.
A straw cutter 43 is used to cut the waste straw conveyed in step 9 and discharged to the field, and a dust outlet 4 is used to suck light straw waste etc. from the material being sorted on the sorting bodies 27 and 28.
4 and a dust suction device 45 for discharging the dust to the outside of the machine.

In the threshing machine configured as described above, the grain culm 18, which is conveyed with the root portion held between the endless band 19 and the lever 20, is handled by the tip portion and threshed by the barrel 17, and the threshed waste straw is removed. After being conveyed on an endless belt 42, the straw is cut with a straw cutter 43 and released into the field. The threshed grains fall onto the sorting body 25 through the mesh of the receiving net 9 in the handling room, and are sorted by the swinging of the swinging rack 24 and the sorting wind from the winnowing machine 29.
It falls onto the No. 1 spiral conveyor 30 and is conveyed and collected. On the other hand, straw waste and ears generated during threshing,
The items to be processed, such as hooks, are discharged from the dust outlet 26 and fall onto the sorting body 27, and while being conveyed in order to the sorting bodies 27 and 28 by the swinging of the swinging shelf 24, this swinging and the winnowing 29 Sorted by wind. Through this sorting, some of the grains are collected, and light straw waste, dust, etc. are sucked up by the dust suction device 45 and removed from the dust exhaust port 4.
4 and is ejected from the aircraft. The sorted material remaining as a result of such sorting is called No. 2, and after falling onto the No. 2 spiral conveyor 31 and being conveyed, it is lifted up and conveyed inside the No. 2 return tube 34 by the No. 2 grain lifting machine 32. te2
It is discharged from the return port 35 to the space 15. Among the discharged No. 2, lighter materials are blown away to a location away from the No. 2 reduction port 35, guided into the handling chamber 3 by the No. 2 guide plate 37, and then merged with the treated materials in the handling chamber 3. The selection is repeated. In addition, the No. 2 lump is discharged from the No. 2 reduction port 35, immediately slides on the No. 2 guide plate 37, and while falling through the handling chamber side falling passage between the middle plate 40 and the rear plate 13, the separation plate After being loosened in step 41, it merges with the processed material and the sorting is repeated. Furthermore, when wet No. 2 is deposited on the No. 2 guide plate 37 during wet handling, the No. 2 discharged from the No. 2 reducing port 35 is guided to the No. 2 sink plate 39 and left in the space. Sorting room 4 inside section 15
be led to. In this case, since the No. 2 sink plate 39 is inclined, the No. 2 slide sliding thereon is given an initial velocity and is thrown toward the starting end of the sorting chamber 4. Further, at this time, the number 2 is guided by the number 2 return guide 38. No. 2 guided to the sorting chamber 4 joins the object being sorted in the swinging shelf 24, and the sorting is repeated.

And the threshing machine 1 equipped with this second sink plate 39
By removing the second sink plate 39, the entire frame 2 can be used as it is for a double-barrel type threshing machine with a processing barrel. FIG. 4 is a side sectional view corresponding to FIG. 2 of a double-acting threshing machine that shares a frame with a single-barrel threshing machine, and shows a processing chamber 50 excluding the second sink plate 39. The handling cylinder 17 has a large number of processing teeth 51 on the circumferential surface.
A processing cylinder 52 having approximately the same length as the processing cylinder 52 is mounted on a shaft, and the processing chamber 50 is partitioned from the processing chamber 4 and the space 15 by a partition plate 53 and a processing chamber receiving screen 54, respectively. Further, the second reduction port 35 is opened to the processing chamber 50. The rest of the structure is the same as that of the single-barrel type threshing machine 1, so the explanation thereof will be omitted, and the operation of the multiple-body type threshing machine is the same as that of conventionally known ones, so the explanation thereof will be omitted. By doing this, the frame can be used in common for both single-hull and double-hull types.
It is possible to reduce production costs and simplify inventory management.

As is clear from the above description, according to the present invention, in the No. 2 reducing device of the threshing machine, the space between the handling chamber 4 and the frame side plate 14, which communicates with the sorting chamber 4 and has the No. 2 reducing port 35 opened at the upper rear end. At the top of section 15,
A second guide plate 37 extending in the axial direction of the handling barrel 17 from approximately the same height as the lower edge of the second reducing port 35 and blocking approximately half the width of the space 15 is tilted lower toward the handling chamber opening 36. At the same time, a second flow plate 39 is provided below the second guide plate 37, and the second flow plate 39 is inclined such that its tip is lowered from the lower edge of the second reduction port 35 into the space 15. Most of the No. 2 discharged from the port 35 is No. 2
Since the number 2 is guided by the number guide plate 37 into the handling chamber 4 and sorting is repeated, not only good sorting performance can be obtained, but also the number 2 is not stuck on the number 2 guide plate 37 during wet handling. If the following No. 2 is not guided to the handling chamber 4, this No. 2 is guided by the No. 2 flow plate 39 and guided to the sorting chamber 4, and due to the tilting effect of the No. 2 flow plate 39, the No. 2 is guided to the sorting chamber 4. The sorting efficiency is greatly improved compared to the conventional method. In addition, in the case where the separation plate 41 is provided as in the embodiment, the provision of the second flow plate 39 prevents the formation of a second lump on the outer convex portion of the separation plate 41, and sorting can be performed smoothly. .

[Brief explanation of drawings]

Figures 1 to 4 show two parts of a threshing machine according to the present invention.
Fig. 1 is a longitudinal sectional view of a threshing machine implementing this device, Fig. 2 is a side sectional view, Fig. 3 is a sectional view along AA of Fig. 1, and Fig. 4 is a main sectional view of the thresher. FIG. 2 is a side sectional view corresponding to FIG. 2 of a multi-barrel threshing machine that utilizes the frame of the monobarrel threshing machine according to the invention. 1... Threshing machine, 3... Handling room, 4... Sorting room,
14...Frame side plate, 15...Space, 35...
... No. 2 reduction port, 36 ... Opening, 37 ... No. 2 guide plate, 39 ... No. 2 flow plate.

Claims (1)

[Claims] 1. A threshing machine comprising a space located between the circumferential surface of the cylindrical handling chamber and the side plate of the frame and communicating with the sorting chamber, and having a No. 2 reduction port opened at the rear end of the upper part of this space. a second guide plate that extends in the axial direction of the handling cylinder from approximately the same level as the lower edge of the return opening, blocks approximately half the width of the space, and slopes downwardly toward the opening of the handling chamber; 2. A threshing machine characterized in that a second flow plate is provided below the number guide plate and projects from the lower end edge of the second reduction port into the space with a slope such that the tip thereof is lowered. Number reduction device.