JP3293206B2 - Grain sorting equipment for threshing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a grain sorting device for a threshing machine.

[0002]

Conventional threshing machine, threshing compound that Moshita from threshing drum lower threshing network provided axially supports the thresher shaft provided on the end side direction from starting end of the feed grain稈移, this It is supplied to the oscillating sorting shelf below the threshing net, is oscillated and sorted by this oscillating sorting shelf, and the first thing such as grains is discharged out of the machine, and the straw debris and dust are sucked by the suction fan. The second product such as the stalks that were discharged and discharged outside the machine and were attached to the branch stalks was a kernel sorting device that was reduced and processed.

[0003] As a grain sorting device of such a threshing machine,
For example, a microfilm disclosed in Japanese Utility Model Application Laid-Open No. 58-161452.
And JP-A-55-96019 and JP-A-53-275.
There is a technique described in Japanese Patent Publication No. 52-52. And these
According to the technology, a threshing net is arranged below the handling cylinder,
A rocking and sorting device is arranged below the rocker so that it can rock back and forth.
From the front of the sorting device, the sorting karino and the first transfer spiral
A second transfer spiral is arranged in order, and the rear end of the rocking sorting device
In a threshing machine in which a suction fan is arranged on the upper side,
The moving sorting device is composed of an upper swing sorting shelf and a lower swing sorting shelf.
In addition, the upper rocking sorting shelf is connected to the front transfer plate and the middle
A lower swing sorting shelf, comprising a sieve and a rear sieve wire.
Is composed of a front transfer plate and a rear glossy,
The front end of the transfer plate at the front of the upper swing sorting shelf is removed.
The lower part of the front and back of the grain net
The rear end is positioned so as to face the lower side of the suction fan.
The front end of the transfer plate in front of the swinging sorting shelf is threshing as described above.
By placing it under the front end of the net,
In the front of the upper rocking sorter in the threshing net and rocking sorter
Transfer plate and sieve wire at the rear and transfer plate and suction at the front of
Grain selection of threshing machine with each relative positional relationship with drawing fan
Only the invention of another device is obtained.

[0004]

The grain culm to be threshed is transported in the threshing chamber from the start end to the end side of the grain culm supply in the threshing chamber, and the grain culm being transported is supported by the handling cylinder shaft. Threshing is threshed by the rotation drive of the handling cylinder, and threshed after threshing leaks from the threshing net below this threshing room and is supplied to the swing sorting shelf,
It is rocked and sorted while transferring threshing material on this rocking sorting shelf,
The first thing such as grain is leaked from the swing sorting shelf, collected and discharged outside the machine, and straw chips and dust are transferred to the end portion by the swing sorting shelf, for example, It is sucked by a suction fan or the like and discharged out of the machine, and a second material such as a branch attached to a branch is collected, reduced, and reprocessed.

During this threshing operation, the thresh that has leaked in the first half of the threshing net is sorted to a certain specific gravity while being transported on the rocking sorting shelf, and the thresh is sorted onto the threshing net after the threshing net. The threshing material leaking from the half part is sequentially supplied later, so that the threshing material leaking onto the rocking sorting shelf may not be uniform, thereby causing poor sorting or sorting. The speed was slow, causing a decrease in efficiency .

Further , the above-mentioned Japanese Utility Model Application Laid-Open No. 58-161452 has been disclosed.
Microfilm and JP-A-55-96019,
It is obtained from the technology described in JP-A-53-27552.
In the invention described, it leaks from the first half of the threshing net
Threshing is received by the transfer plate at the front of
Transported to the
It is taken into the number transfer spiral. For this reason, the first half of the threshing net
Thresh that has leaked from the waste and threshing material with a lot of grain attached to the branch
To be sorted by contact,
It is easy to cause clogging with straw waste etc. in the sieve,
There is a disadvantage that the sorting operation cannot be performed smoothly.

[0007]

According to the present invention, there is provided the present invention as described above.
Take the following technical measures to solve the problem.
That is, the threshing net 18 is arranged below the handling drum 16 and
A rocking sorting device 19 is arranged below 18 so as to be able to rock back and forth.
Then, under the rocking sorting device 19, a sorting machine 2
9 and the first transfer spiral 31 and the second transfer spiral 34 are arranged in order.
Then, the suction fan 3 is provided above the rear end of the swinging sorter 19.
In the threshing machine in which 6 is arranged, the rocking sorter 19 is
Upper swing sorting shelf 21 and overlapping arrangement below lower swing sorting shelf 21
A lower swing sorting shelf 22 to be placed and a lower side of the lower swing sorting shelf 22
In addition to the overlap arrangement of the grain 27,
The upper swing sorting shelf 21 is moved to the front transfer plate 23a and the middle
It comprises a sieve 23b and a rear sieve wire 24,
The swing sorting shelf 22 is moved from the front transfer plate 23a to the middle chaff.
It comprises a sieve 23b and a rear sieve wire 24,
The swing sorting shelf 21 is moved forward with the front end of the transfer plate 23a at the front thereof.
It faces the lower part of the center in the front-rear direction of the threshing net 18 and is behind it.
Rear end of the sieve wire 24 faces the lower side of the suction fan 36
So that the lower swing sorting shelf 22 is moved to the front
The front end of the plate 23a faces below the front end of the threshing net 18.
In addition, the rear end position of the middle part 23 of the chaff sheave 23b is forward.
The position of the rear end of the grain 27 and the front-back direction
The rear end position of the sieve line 24 which coincides with and is
The rear end portion of the chaff sheave 23b in the middle part of the sorting bin 21
Position so that it substantially matches the
Therefore, the upper part of the threshing net 18 and the rocking sorting device 19
Transfer plate 23a at the front of swing sorting shelf 21 and chaff at the middle
In front of the sieve 23b, the rear sieve wire 24 and the lower swing sorting shelf 22
Transfer plate 23a, intermediate chaff sheave 23b and rear
Of the sieve wire 24, the grensive 27 and the suction fan 36
The grain sorting equipment threshing machine, characterized in that setting the relative positional relationship.

In the threshing operation, the operation of the handling cylinder 16
Threshing the stalks, and the resulting thresh (threshing)
) Is leaked from the threshing net 18 and the lower rocking sorter 1
9 and the swinging and sorting device 19 swings back and forth and sorts.
It is sorted under the action of the sorting wind by Yo Kara 29
Grains that flow down and are taken into the first transfer spiral 31
Branches taken out and taken into the second transfer spiral 34
Adhered particles can be reprocessed by being returned to the processing cylinder.
You. In addition, dust having a small specific gravity is
Is discharged outside the aircraft.

Next, such a sorting operation will be described in detail.
You. First, the thresh leaked from the first half of the threshing net 18 is
Movement of the front part of the lower swing sorting shelf 22 in the swing sorting device 19
The transfer plate 23a is received on the feed plate 23a,
Therefore, it is sent to the rear and is placed on the middle section 23b.
Reach. Then, the first time by the chaff sheave 23b
Sorting is performed, and only the leaked thresh is the lower granule.
The second sorting is carried out on
Only the fresh grains are taken into the transfer spiral 31 first. Also,
The thresh not leaked from the chaff sieve 23b is
The chaff sieve 23b is drawn from the rear end to the rear sieve line 24.
The sieved line 24 is sieved and screened. this
At this time, the rear end position of the chaff
The position of the rear end of the bush 27 substantially coincides with the front-back direction.
As a result, the rear end of the
Compared to the case where it is located ahead of the rear end position of the valve 27
Coarse threshing which did not leak from the chaff sheave 23b
Objects are less likely to be received on the grain 27.
In addition, the rear end position of the chaff
-Compared to the case where it is located behind the rear end
In comparison, almost all of the thresh leaked from the chaff sheave 23b
The quantity can be re-sorted by means of a grinder 27.

[0010] In addition, the leakage from the latter half of the threshing net 18
The grains are stored in the upper swing sorting shelf 21 in the swing sorting device 19.
It is received on the front transfer plate 23a, and the transfer plate 23a is moved.
It is sent backward by the sending action and the middle part of the chief sheave 2
3b. And, by the chaff sheave 23b,
The first sort is performed and only the leaked thresh is under the bottom
Above and behind the chaff sheave 23b in the middle of the swing sorting shelf 22
The second sorting is performed on the sieve line 24 of
Then, it is received on the chive sheave 23b and leaks
The threshed for the third time by the grain 27
Is carried out and taken into the transfer spiral 31 most.
On the other hand, the chaff sheave 2 in the middle part of the upper swing sorting shelf 21
Coarse thresh that did not leak from 3b
23b from the rear end to the rear screen line 24
It is subjected to sieving sorting by line 24. At this time, the sieve wire 24
Good suction of dust by the suction fan 36 at the upper rear end
Is done. At this time, the chaff of the upper swing sorting shelf 21 is used.
The rear end position of the sheave 23b and the sieve wire 2 of the lower swing sorting shelf 22
4, since the position of the rear end substantially matches in the front-back direction,
The rear end position of the chaff sheave 23b of the upper swing sorting shelf 21 is
Forward of the rear end position of the sieve wire 24 of the lower swing sorting shelf 22
Leakage from the chive sheave 23b compared to the case where
Coarse thresh that has not been dropped can be received on the sieve line 24.
And the chaff sieve of the upper swing sorting shelf 21 is reduced.
The rear end position of 23b is after the sieve line 24 of the lower swing sorting shelf 22
Compared to the case where the
Fushi - Furuisen 24 substantially whole amount of the threshing product ruled leakage from Bed 23b
Can be re-sorted.

[0011]

According to the present invention, the thresh which is threshed by the handling drum 16 and leaks from the threshing net 18 is divided into a first half and a second half, and is divided into both the upper and lower swing sorting shelves 21 and 22. By being supplied in a leaking manner and being oscillated, the thresh on the upper and lower oscillating sorting shelves 21 and 22 is divided into two, and the layers become thinner and uniform at the same time.
As a result, the sorting performance is improved, the sorting speed is increased, and the sorting efficiency can be improved .

Also, a chaff at an intermediate portion of the lower swing sorting shelf 22 is provided.
Rear end of sheave 23b and rear end of sheave 27
Because the position almost matches in the front-back direction,
The rear end of the sheave 23b is located at the rear end of the grain 27.
Position compared to the case
-The coarse thresh that did not leak from the tub 23b
Is less likely to be received on the valve 27,
Perform smooth sorting work by reducing clogging of the valve 27
And the rear end position of the chaff sheave 23b is gray.
When it is located behind the rear end position of the sheave 27
Of thresh leaked from the chaff sheave 23b
Substantially the whole amount can be re-sorted by the grain 27 and threshed.
Sorting accuracy can be improved.

Further, the chaff sheave 2 of the upper swing sorting shelf 21
3b rear end position and rear end of sieve line 24 of lower swing sorting shelf 22
The upper swing selection
The rear end position of the chaff sheave 23b of the separate shelf 21 is selected by swinging downward.
It is arranged ahead of the rear end position of the sieve wire 24 of the separate shelf 22.
In the case of leakage from the chaff sheave 23b
Very coarse thresh is less likely to be received on the sieve line 24
To reduce stagnation of thresh on the sieve line 24
Sorting work can be performed, and the upper swing sorting shelf 21 can be used.
The rear end position of the chaff sheave 23b is the lower swing sorting shelf 22.
Is placed behind the rear end position of the sieve wire 24 of
In comparison, the abbreviation of thresh leaked from the chaff sheave 23b
The whole amount can be re-sorted by the sieve wire 24, and the threshed sorting accuracy
Can be improved .

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The figure shows a state in which a threshing machine 3 is mounted on the upper side of the traveling device 2 of the self-removing combine 1.

The combine 1 has a structure in which the grain stalk raised by the raising 5 of the cutting device 4 at the front is cut by a cutting blade 6 provided at a lower part. 7 and the like, and is taken over by a threshing transfer chain 8 provided on the upper left side of the threshing machine 3 and a clamping rod 9, and held by the threshing transfer chain 8 and the clamping rod 9. It is transferred from the front to the rear in the threshing machine 3 and threshing is performed during this transfer, and the first thing such as threshed grains is discharged out of the machine by a discharge tube 10 or the like. It is configured to be transferred to the rear part by a culm transfer chain or the like, cut by the rear cutter 11 or the like, and discharged to the outside of the machine.

The threshing machine 3 includes front and rear machine walls 12a and 12a.
b, a threshing chamber 13 is formed, a grain culm supply port is provided in the front machine wall 12a, and a discharge port is provided in a lower portion of the rear machine wall 12b.
A handle shaft 14 is rotatably provided between the front and rear machine walls 12a and 12b in the threshing chamber 13, and the handle shaft 14
A handling cylinder 16 provided with 5 and the like is pivotally supported. An opening / closing handle cover 17 is provided on the upper side of the threshing chamber 13, and a threshing net 18 through which threshing material leaks is provided on the lower side.

A processing drum chamber 13 'is provided on the right side of the processing drum chamber 13, and a processing drum 14' for processing the second reduced product is rotatably mounted on a processing drum shaft 15 'in the processing drum chamber 13'. Support. On one side of the processing drum chamber 13 ', a processing drum net 16' through which a second processed material leaks is stretched.

An oscillating sorting device 19 is slidably provided in a threshing sorting chamber 20 below the threshing net 18, and the oscillating sorting device 19 is provided between upper and lower left and right side plates 28, two upper and lower stages.・ Lower swing sorting shelves 21 and 22, lower mesh-like Glen sheave 27,
A threshing grain comprising a grain transfer shelf 25 and a grain falling shelf 26, and the threshing material leaked and supplied from the threshing net 18 and the discharge port is rock-sorted into grains, branch studs, straw chips, dust and the like. It is a configuration that separates.

The starting end of the upper rocking sorting shelf 21 is provided substantially at the center of the threshing net 18 in the front-rear direction, and the upper rocking sorting shelf 21 forwards threshing to the front. A chaff sheave (transfer plate) 23a composed of a plurality of triangular sort plates provided with a leak hole for leaking sorted kernels in a vertical plane portion while rocking and sorting while swinging and transferring is provided at an intermediate portion. A rocking portion is rocked while the threshing material is rocked and transported backward, and a lower portion for leaking the sorted kernels is provided with a chaff sheave 23b including a plurality of sorting plates provided at a predetermined interval in the front-rear direction. The chaff sheave 23b has a configuration in which the inclination angle can be freely changed.
4 is provided.

The starting end of the lower rocking sorting shelf 22 is provided so as to be located at the starting end of the threshing net 18. The lower rocking sorting shelf 22 has a front part, an intermediate part, and a rear part, each having the upper part. As with the swing sorting shelf 21, the chaff sheave (transfer plate) 23
a, 23b and the sieve wire 24 are provided. The grain transfer shelf 25 is provided at a lower portion of the lower swing sorting shelf 22 and the grain transfer shelf 26 is provided at a rear portion. Is provided with a drop port 27 'through which the sorted grains fall, and the mesh-shaped grain sheave 27 is provided at the rear of the grain transfer shelf 25.

The rocking and sorting apparatus 19 may have a structure in which the upper and lower two stages are formed of an upper, middle and lower three-stage upper and lower rocking sorting shelves. Is the same configuration as the upper and lower two-stage configuration. The starting end of each of the swing sorting shelves may be configured to be positioned at a position where the threshing net 18 is equally divided into three in the front-rear direction. In the case of this three-stage configuration, a configuration may be adopted in which the intermediate swing sorting shelf and the lower swing sorting shelf can be vertically divided using the middle position as the dividing position.

The chaff sheave 23b may be formed in a pack system as shown in FIG. 4 so as to be detachable between the left and right side plates 28, 28. The sorting Karino 29 is provided at the lower front part of the rocking sorting device 19, and the rear of the sorting Karino 29 is provided with the first transfer spiral 31 connected to the most downstream shelf 30. A grain collecting gutter 32 is provided, and on the rear side of the first grain collecting gutter 32, a second grain collecting gutter 35 provided with a second transfer spiral 34 connected to the second downstream shelves 33a and 33b is provided. During the fall, the falling kernels, spike sticking particles, dust, and the like, which have been rocked and sorted by the rocking sorting device 19, are wind-sorted by the blast generated from the sorting Karino 29 and fall into one of the grains. The waste flows down to the first grain collecting gutter 32, is transferred by the first transfer spiral 31, and is taken over by a first discharge tube (not shown) provided on one side. Is transported to the upper portion and discharged into a storage tank (not shown). The kernel discharged and stored in the storage tank is
And is discharged to the outside of the machine. The second material such as spikelets adheres to the second collecting gutter 35, is transferred by the second transfer spiral 34, is taken over by the second reduction cylinder (not shown), and is transferred to the processing cylinder chamber 13. ′ And reprocessed. Dust dropped and the swing sorting device 1
The straw waste transferred to the upper and lower ends of the sieve lines 24, 24 at the top and bottom of the swinging sorting device 19 is sucked by suction blades of a suction fan 36 provided on the inner side surface of the right machine wall 12c at the upper end of the swing sorting device 19. The suction fan 3
6, a semicircular suction separation plate 35 'is provided between the casing 36' and the inside of the left side machine wall 12d.
The lower end on one side of 5 'and the upper end of the second downstream shelf 33b are connected to each other, and are configured to suck straw chips from below.

FIGS. 5 to 8 show another embodiment. The self-removing combine 37 has a configuration in which the culm is raked by a rake 39 'provided at the front of a front reaper 38, and the culm is cut by a cutting blade 39 provided at a lower portion. The harvested grain culm is transported upward by a grain culm transport belt 40 or the like, supplied to a threshing machine 41 provided above the traveling device 41 ', and threshed.

The threshing machine 41 has front and rear machine walls 42a, 4
A threshing chamber 43 is formed between the front and rear walls 42a, and a culm supply port is provided in the front wall 42a, and a discharge port is provided in a lower portion of the rear wall 42b. , 42b, a handling cylinder shaft 44 is rotatably provided, and a handling cylinder 46 provided with a helical rotor 45 is rotatably supported on the handling cylinder shaft 44. An openable / closable handle cover 47 is provided on the upper side of the threshing chamber 43, and a threshing net 48 through which threshing material leaks is provided on the lower side.

A processing drum chamber 49 is provided on the right side of the threshing chamber 43, and a processing drum 50 for processing the second reduced product is rotatably supported on a processing drum shaft 51 in the processing drum chamber 49. On one side of the processing drum chamber 49, a processing drum net 52 through which a second processed material leaks is provided.

An oscillating sorting device 53 is slidably provided in a threshing sorting chamber 54 below the threshing net 48, and the oscillating sorting device 53 has a two-stage vertical oscillating sorting between left and right side plates. Shelf 5
5, 56, a lower mesh-like grain sieve 57, a grain transfer shelf 58, a grain falling shelf 59, and the like. , Rocking and separating into straw chips, dust and the like, and the sorted kernels are dropped from a drop port 60 provided between the shelves 58 and 59.

The upper and lower swinging sorting shelves 55 and 56 are composed of a plurality of triangular-shaped chaff sheaves 61a formed of sorting plates from which grains leak, and a plurality of sorting plates from which grains are leaked at predetermined intervals. It is configured to include a chaff sheave 61b and a plurality of sieve wires 62 provided at predetermined intervals in the left-right direction.

The sorting karino 63 is provided by the swing sorting device 53
It is provided in the lower front part, and is configured to perform wind sorting by the wind generated from the sorting Karino 63.
At the rear side, the first collecting gutter 6 containing the first transfer spiral 64
5 is provided, and a first discharge tube (not shown) is provided at one side of the first grain collecting gutter 65, and the sorted kernels are transported to the upper portion by the first discharge tube and stored in a storage tank (FIG. (Not shown), and stored in the storage tank,
And is discharged to the outside by being transported to the upper part.

The second collection gutter 67 is provided at the rear side of the first collection gutter 65, and a second transfer spiral 68 is mounted inside the second collection gutter 67 so as to be rotatable in the normal and reverse directions. The transfer spiral 68 is configured to switch between forward and reverse rotations by operating a switching lever (not shown) provided on the outer side of the left side machine wall 62c. The upper end of the second reduction cylinder 69a is communicated with the processing chamber 49, and the second reduction cylinder for soybeans, red beans and buckwheat is provided on the left side. 69b, the upper end of the second reduction cylinder 69b communicates with the upper side of the swing sorting device 53. The second reduction cylinder 69b is detachably attached to the outside of the left machine wall 62c. When threshing work of soybeans, red beans and buckwheat, etc.,
As a configuration that is not reduced to 9, the threshing work efficiency is improved.

The suction fan 70 is provided at the end of the handle cylinder 46 so as to protrude from the outer surface of the right machine wall 42d. The outer peripheral surface of the casing 71 of the suction fan 70 and the end of the handle cylinder 46 are viewed from the side. This casing 71
The suction port 72 of the casing 71
Are arranged close to the first quadrant position, thereby improving the suction efficiency of straw waste and the like sucked by the suction fan 70.

The suction separating plate 73 has a semicircular shape and sucks straw chips from the lower part.
c, the upper surface of the suction separating plate 73 is substantially aligned with the lower side of the handle barrel shaft 44 when viewed from the front, and the upper surface of the suction separating plate 73 is The structure is such that the casing 71 side is formed high and the left side machine wall 42c side is formed low, thereby improving the efficiency of suction of straw waste and the like sucked by the suction fan 70.

The operation of the above embodiment will be described below. The start of the self-removing combine 1 is started and the traveling device 2 is started.
, The mowing culm is raised by the raising 5 of the mowing device 4, and the mowing culm cut by the cutting blade 6 is
It is taken over by the harvesting transfer chain 7 and conveyed to the upper part, is taken over by the threshing transfer chain 8 of the threshing machine 3 and the clamping rod 9, and is transferred from the front to the rear in the threshing chamber 13 of the threshing machine 3. During this transfer, threshing is carried out by the teeth 15 of the rotating drum 16 which is rotationally driven, and the threshing material leaking from the first half of the threshing net 18 is placed on the lower rocking sorter 22 under the rocking rocking sorter 19. The thresh and the thresh discharged from the discharge port and leaked from the rear half of the threshing net 18 are leaked onto the swinging sorting shelf 21 on the swinging sorting device 19. It is supplied below, and is rocked and sorted while moving on each of the chaff sheaves 23a and 23b, and is separated into grains, sticky branch attached grains, straw chips and dust, and the like.
Fall through the grain transfer shelf 25 and the grain falling shelf 26,
During this fall, the wind is sorted by the wind generated from the sorting Karino 29, and flows down the first down shelves 30 to the first grain trough 32.
It is harvested inside, is transferred to one side by the first transfer spiral 31,
It is taken over by the first discharge tube, conveyed to the upper part, and discharged into the storage tank.
At 0, it is conveyed to the top and discharged out of the machine.

The spike sticking particles and some dust that fall while being transported to the rear by the respective chaff sheaves 23a and 23b and the respective sieve lines 24 fall from the respective sieve lines 24. The wind is generated by the wind generated by the wind 29, and is separated by the second downflow shelves 33a and 33b, collected into the second grain collection gutter 35, transferred to one side by the second transfer spiral 34, and then moved to the second side. It is conveyed to the upper part by the reduction cylinder, returned to the processing drum chamber 13 ′, re-processed by the processing drum 14 ′ driven in rotation in the processing drum chamber 13 ′, and leaks from the processing drum net 16 ′.
The liquid is supplied to the swing sorting device 19 in a leaking manner.

The straw waste is oscillated and transported to the tip of each of the sieve wires 24, is sucked by the suction blades of the suction fan 36, and is discharged outside the machine. The threshed waste culm is transported backward by a waste culm transfer chain or the like, cut by the cutter 11 and discharged out of the machine.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional side view of a threshing machine.

FIG. 2 is an enlarged front sectional view of the threshing machine.

FIG. 3 is an overall side view of the combine, which can be partially broken.

FIG. 4 is an enlarged perspective view of a chaff sheave.

FIG. 5 is a view showing another embodiment, and is an enlarged sectional side view of a threshing machine.

FIG. 6 is a view showing another embodiment, and is an enlarged front sectional view of a threshing machine.

FIG. 7 is a view showing another embodiment, and is an enlarged plan sectional view of a part of the threshing machine.

FIG. 8 is a view showing another embodiment, and is an overall side view of the combine.

[Explanation of symbols]

16 Handling cylinder 18 Threshing net 19 Swing sorting device 21 Upper swing sorting shelf 22 Lower swing sorting shelf 23a Transfer plate 23b Chief sieve 24 Sieve wire 27 Grassieve 29 Sorting Karamin 31 First transfer spiral 34 Second transfer Spiral 36 suction fan

Claims (1)

(57) [Claims] 1. A threshing net 18 is arranged below a handling cylinder 16.
A swinging sorting device 19 can be swung back and forth under the threshing net 18.
For sorting from the front under the swinging sorting device 19 from the front.
Karino 29, first transfer spiral 31 and second transfer spiral 34
And a suction filter is provided above the rear end of the swing sorting device 19.
In the threshing machine in which the fan 36 is arranged,
19 on the upper swing sorting shelf 21 and the lower side of the upper swing sorting shelf 21
Of the lower swing sorting shelf 22 and the lower swing sorting shelf 22
It is composed of a grain 27 which is arranged overlapping below.
In addition, the upper swing sorting shelf 21 is interposed with the front transfer plate 23a.
A part of the chaff sheave 23b and a rear part of the sieve wire 24
Then, the lower swing sorting shelf 22 is interposed with the front transfer plate 23a.
And a rear sieve wire 24b.
Then, the upper swing sorting shelf 21 is moved to the front of the transfer plate 23a.
The front end faces the lower part of the center in the front-rear direction of the threshing net 18 and
The rear end of the sieve wire 24 at the rear
The lower swing sorting shelf 22 is disposed so as to face the lower side.
The front end of the front transfer plate 23a is the front end of the threshing net 18.
The rear end of the lower part of the chaff sheave 23b facing the lower side
The part position is the rear end position of the above-mentioned Glen 27 and the front-back direction.
And the rear end position of the rear sieve line 24
Is a chaff sheave 23b at an intermediate portion of the upper swing sorting shelf 21.
Positioned so that it substantially coincides with the rear end position in the front-back direction
By doing so, the threshing net 18 and the rocking sorter 19
Between the transfer plate 23a at the front of the upper swing sorting shelf 21 and
Part of the chaff sheave 23b, rear part of the sieve wire 24 and lower swing sorting
The transfer plate 23a at the front of the shelf 22 and the chaff sheave 2 at the middle
3b, rear sieve wire 24, grensive 27 and suction fan
36. A grain sorting device for a threshing machine , wherein each relative positional relationship with 36 is set .