JPH0731268A - Grain selector in grain thresher - Google Patents

Abstract

PURPOSE:To provide a grain selector in a grain thresher which can reduce rachis-bearing grains mixed in the first threshing product by installing an upper screen of a prescribed mesh and a lower screen of a larger mesh than that of the upper one on the upper side for separating rachis-bearing grains in the lower part of a shaking selector. CONSTITUTION:In the upper part of a shaking selector 28 which receives the threshed products leaking through a grain screen 21 formed at the lower side of a threshing chamber equipped with a threshing drum 19 rotatably supported with a shaft 17 extending from the upper stream of stem feed to the tail end inside, are installed a conveying shelf 31, grain sieve 32, chaff sieve 33 and straw rack 34 in turn from the upper stream, while an upper screen 35a of a prescribed mesh is set on the upper side and a lower screen 35 of a larger mesh than that of the upper screen is set on the lower side in the lower part of the shaking selector.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain selecting device for a thresher.

[0002]

2. Description of the Related Art A conventional threshing machine is a threshing machine that leaks from a threshing net below a threshing chamber, which is provided by supporting a handling barrel on a handling barrel shaft provided in the direction from the start end side to the end side of grain culm transfer. And the thresher that has not leaked from the threshing net discharged from the straw waste discharge port provided at the threshing net terminal end at the handling barrel end, the swing selection provided on the lower side of the threshing net is performed. A transfer shelf, a gren sieve, a chaff sheave, and a straw rack are sequentially installed in the upper part in the transfer direction from the start side, and the lower part is supplied to an oscillating sorting device equipped with a single stage of a sorting net. It was a grain sorting device that was sorted and sorted into the first grain such as grain, the second grain such as branch adhering grain and straw waste.

[0003]

The grain culms to be threshed are transferred from the starting end side of the grain culm supply in the threshing chamber to the end side, and the grain culm being transferred is pivotally supported by the handling barrel shaft. Threshing by the rotation drive of the handling barrel, the threshed threshing is discharged from both the threshing net at the lower side of the threshing chamber and the straw waste discharge port at the end of the handling barrel, It is supplied to the rocking sorter, and is sequentially rocked and transferred to the transfer rack, gren sieve, chaff sheave, and straw rack of this rocker sorter, while the second one such as the grain attached to the branch shoots and the like. It is separated and separated into straw waste, etc., and further subjected to rocking sorting and pressured air sorting with a sorting net, the first product is discharged outside the machine, and the second product is supplied to the processing chamber etc. Is reprocessed and the straw waste and dust are discharged to the outside of the machine.

[0004] During the above threshing work, it is intended to reduce the number of adventitious shoot adhering grains mixed in the first product such as grain.

[0005]

According to the present invention, a threshing chamber 14 provided with a handling barrel 19 axially supported by a handling barrel shaft 17 extending from the starting end side to the end side of grain culm transfer inside a threshing process for grain culms. On the upper part of the rocking / sorting device 28 for rocking / sorting by receiving the grain that has leaked from the threshing net 21 on the lower side, a transport shelf 31, a grain sheave 32, a chaff sheave 33, and a straw rack 34 are sequentially arranged from the starting end side in the transport direction. The grain of the threshing machine is characterized in that an upper sorting net 35a having a predetermined mesh is provided on the lower side and a lower sorting net 35b having a larger mesh than the upper sorting net 35a is provided on the lower side. Configured as a grain sorting device.

[0006]

[Operation and effect of the invention] The culm to be threshed is provided in the threshing chamber 14
The grain culms are transferred in the threshing chamber 14 from the start side to the end side of the grain culm supply, and the grain culm being transferred is threshed by the rotation drive of the handling cylinder 19 pivotally supported by the handling barrel shaft 17 and threshed. The threshing is discharged and leaked from the threshing net 21 below the threshing chamber 14,
It is discharged from both of the straw waste discharge port at the terminal end of the handling cylinder 19 and supplied onto the rocking / sorting device 28, and the transfer rack 31, the gran sieve 32, and the chaff sheave 3 of this rocking / sorting device 28 are discharged.
3 and the straw rack 34 and the like are sequentially transferred, while being separated and sorted into the first item such as grain, the second item such as branch adhering grain and straw waste, and the upper upper sorting net 35a and the lower one. The lower sorting net 35b on the side performs rocking sorting and pressure air sorting for separating and sorting into grains and branches adhering grains, and the first products such as sorted grains are discharged to the outside of the machine. Collected. The second material such as the sorted particles of the branch shoots is supplied to a processing chamber or the like and reprocessed.
The sorted straw debris and dust are discharged out of the machine.

At the time of the above threshing work, the particles attached to branch shoots are
During transfer on the upper transfer rack 31, the Glen Sieve 32, etc., separation and selection are performed by rocking selection, and further lower upper and lower upper selection nets 3
By separating and sorting again by swing sorting by the 5a and the lower sorting net 35b, the branch adhering grains are not mixed in the first product such as the sorted grain.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The illustrated example shows a state in which the thresher 3 is mounted on the upper side of the traveling device 2 of the self-removing combine 1. In the combine 1, the grain culms raised by the raising 5 of the reaping device 4 at the front part are mowed by the cutting blade 6 provided at the lower part, and the mowed grain culms thus cut are conveyed to the upper part by the mowing transfer chain 7 or the like. hand,
The threshing chain 8 and the sandwiching rod 9 provided on the upper left side of the threshing machine 3 take over, and the threshing chain 8 and the sandwiching bar 9 sandwich the threshing machine 3 from the front to the rear. During this transfer, threshing processing is performed, and the first products such as threshed grains are discharged to the outside of the machine in the fried cylinder 10 and the like. Further, the threshed culm is cut by a cutter 11 or the like at a culm chain (not shown) and discharged to the outside of the machine.

The thresher 3 has front and rear wall plates 12a, 12
b and the upper part of the left and right wall plates 13a, 13b, the threshing chamber 1
4, the front wall plate 12a is provided with a grain culm supply port 15 at a position corresponding to the lower part of the threshing chamber 14 in a predetermined width in the vertical direction in the left-right direction, and the rear wall plate 12b is An outlet 16 is provided at a position corresponding to the lower part of the threshing chamber 14 with a predetermined width in the vertical direction in the left-right direction. The front and rear wall plates 12a, 1
A handle barrel shaft 17 is rotatably supported between the two members 2b, and a handle barrel 19 having a plurality of handle teeth 18 on its outer peripheral portion is pivotally supported on the handle barrel shaft 17.

The threshing chamber 14 is provided with an openable and closable barrel cover 20 on the upper side, and a threshing net 21 on the lower side through which grain is leaked.
Is installed. At the end of the threshing net 21 at the end of the handling cylinder 19, there is provided a straw waste discharge port 22 for discharging the threshing that has not leaked from the threshing net 21. Partition plate 23
Is provided on the starting end side of the straw waste outlet 22 in the left-right direction so as to project into the threshing chamber 14 higher than the threshing net 21 by a predetermined height, and discharges particularly grains of the threshing to the straw waste outlet 22. The culm is the partition plate 23
It is designed to drop when passing over. Also, the rear wall plate 12b
When the culm passes over the lower end edge of the culm outlet 16 provided in the above, the grain which is inserted in the culm is dropped.

The straw discharge port 22 has a plurality of L-shaped concaves 22 'between the middle partition plate 23 and the rear wall plate 12b at a predetermined interval in the circumferential direction to the outer surface of the middle partition plate 23. Individually, the width of each of the concaves 22 'is formed so that the width of the mounting base is wide so that the grain is leaked from between the concaves 22' and between the tip and the rear wall plate 12b. A predetermined gap 23 'is provided so that the straw dust caught in the concave 22' is dropped from the gap 23 '.

The processing drum chamber 24 is provided on the rear side of the threshing chamber 14 from the rear end of the threshing chamber 14 to a predetermined position from the rear end of the threshing chamber 14 to the rear end of the threshing chamber 14. A plurality of processing body claws 21 'are provided on the outer circumference. In the processing chamber 24, the second reduction product and the threshing chamber 14
Treating and dusting untreated grain directly supplied from
The processing drum 25 for transferring the grain removal such as straw scraps supplied from 4'to the rear is provided with a processing drum chamber front plate 25 'and a processing drum chamber rear plate 26'.
The processing cylinder 25 is provided between the front wall plate 12a and the rear plate 26 'of the processing cylinder chamber, and the processing cylinder 25 is rotatably supported by the processing cylinder shaft 26.

The processing chamber 24 has a dust inlet 2 from the starting end.
A processing cylinder 27 is stretched on the lower side up to 4 ', and the dust-sending port 24' is formed by a dust-sending plate 27 '.
Is provided so as to be communicated with the
Further, the lower side of the processing cylinder 25 is provided along the inner circumference of the processing cylinder 25 up to the vicinity of the central position of the processing cylinder 25, and a predetermined length behind the dust port 24 'is a processing cylinder net 27.
And the lower side in the vicinity of the end of the processing cylinder 25 is opened, and the grain removal such as straw scraps supplied from the dust outlet 24 'into the processing cylinder chamber 24 is A partition plate 28 'is provided on the processing cylinder 25 so that the dust is not transferred forward from the dust delivery port 24'.

The communication hole frame 29 'includes the front and rear wall plates 12
It is provided between a and 12b, and in this communication hole frame 29 ',
A plurality of openings 3 for partitioning the threshing chamber 14 and the processing chamber 24
A threshing chamber partition plate 33 'provided with 2'is provided and these openings 3
2 ′ supplies a part of the grain removal into the processing chamber 24,
The inside of the processing barrel chamber 24 is processed during transfer, and the treated straw waste or the like is returned to the threshing chamber 14 again from the opening 32 'at the end.

The swing sorting device 28 of the grain sorting device is swingably provided in the threshing sorting chamber 29 below the threshing net 21, and the grain shedding and the straw waste discharge port 22 leaking from the threshing net 21 and It is configured to receive the grain-free grains discharged from the lower side in the vicinity of the end of the processing cylinder 25 and separate and sort the grains, the grains attached to the branch shoots, the straw chips, and the like. This swing sorting device 28 includes right and left side plates 30,3.
In the upper part between 0, a transfer shelf 31 having a downflow hole in the shape of a mountain from which the grain leaks is provided sequentially in the front-back direction from the start end in the transfer direction,
On the rear side of the transfer shelf 31, there is provided a Glen Sieve 32 composed of a transfer plate (A) or the like provided at a predetermined interval in the left-right direction, and on the rear side of the Glen Sheave 32, there is a transfer plate (B ) And the like, and on the rear side of the chaff sheave 33, a straw rack 3 composed of a transfer plate (C) or the like having a mountain shape and provided at predetermined intervals in the left-right direction.
4 is provided. An upper sorting net 35a having a predetermined mesh is provided on the lower side, and a lower sorting net 35b larger than the mesh of the upper sorting net 35a is provided on the lower side of the upper sorting net 35a.
Before and after the bottoms of the left and right side plates 30, 30, the front downflow shelf 36
a and a downstream shelves 36b are provided, and the selected grains are
The particles which have leaked from the lower sorting nets 35a and 35b and which have been sorted and have attached branch stalks are dropped from a drop port 37 formed between these front and backflow lower shelves 36a and 36b.

The upper sorting net 35a has a structure in which the rear end is extended to the position closest to the center of the transfer spiral 43, and the lower sorting net 35b has a rear end from the end of the upper sorting net 35a. As a configuration in which the length of the grain is attached to the rear, the adhering particles of the branch shoots are most prevented from leaking into the gutter 41. The Karato fan 38 is provided in the lower front part of the swing sorting device 28,
A plurality of Karasu fan blades 40 are mounted on the Karasu fan shaft 39 that is rotationally driven.
Is installed, and the grain removal falling from the rocking sorting device 28 is pressure-air sorted by the wind generated by the rotational drive of each Karato blade 40.

The first grain collecting gutter 41 is provided on the rear side of the Karawan fan 38, is connected to the front and rear most falling shelves 42a and 42b, and has the first transfer spiral 43 inside. On the rear side of the first grain collecting gutter 41, the second lower shelves 44 in the front and rear
A second grain collecting gutter 46 containing a second transport spiral 45 connected to a and 44b is provided. The first fried grain cylinder (not shown) is provided at the end of the first grain collecting trough 41, and the first items such as selected grains are taken over from the first transfer spiral 43 and stored in the grain storage tank 47. The grain in the grain storage tank 47 is fried in the fried cylinder 10 and discharged to the outside of the machine. Second fried cylinder (not shown)
Is provided at the terminal end of the second transfer spiral 45, and the second material such as the sorted branch vein attached particles is taken over from the second transfer spiral 45, reduced to the processing chamber 24, and reprocessed. .

The suction fan 48 is provided on the rear side of the processing cylinder rear plate 26 'supporting the processing cylinder 25 and on the upper side of the swing selection device 28. The suction fan 48 is provided on the rear side of the processing cylinder rear plate 26'. Upper guide plate 5 provided between the right wall plate 13b and the left wall plate 13a
0 and the lower guide plate 51 are provided in a casing 52 having a suction port 53 and a discharge port 54, suctioned from the lower suction port 53, and discharged from the rear discharge port 54 to the outside of the machine. It is configured to discharge dust and dirt.

As shown in FIGS. 9 to 11, on the left and right sides below the operation seat 55 of the combine 1, an upper support 56 having a long hole 58 on one side and a lower support having a long hole 59 on one side are provided. 57, and these upper and lower support tools 56, 57 are the support rods 6.
This operation seat 5
A cylinder 61 for vertically moving 5 is provided, and the vertical movement of the cylinder 61 causes the support rods 60, 60 to move into the long hole 5
The operation seat 55 is vertically moved by slidingly moving the 8,59 parts.

The operation devices 62a and 62b are configured to start and stop each part, or adjust each part, and have an operation seat 55.
The operation devices 62a and 62b are provided on both sides of the operation seat 55 and are interlocked with the up and down movement of the operation seat 55 so that the operation devices 62a and 62b simultaneously move up and down. The power steering lever main pillar 63 is provided in an L-shape on one side of the front side of the operation seat 55 and above the step table 64. The power steering lever main pillar 63 has an auxiliary support pillar 66 having a box shape that moves vertically and has elongated holes 65, 65. The support pin 67 provided on the power steering lever main column 63 is provided with a pin 68, and the pin 68 has bearings 69, 69.
Are provided to facilitate the vertical movement of the auxiliary column 66.

The auxiliary handle 70 is provided such that the auxiliary column 66 and the operating device 62a are connected to each other, and the auxiliary handle 70 is also moved up and down simultaneously with the vertical movement of the operating seat 55. The power steering lever 71 is provided with a power steering box 72, and the turning brake force can be changed by operating the power steering lever 71. The power steering box 72 is provided on the upper side of the auxiliary support column 66 and is interlocked with the vertical movement of the operation seat 55. The power steering lever 71 is also configured to move up and down at the same time.

As described above, even if the operation seat 55 is moved up and down, the operation devices 62a and 62b, the auxiliary handle 70, the power steering lever 71 and the like are also moved up and down at the same time, so that the operation seat 55 is fully operated. The relative position of the system does not change, an appropriate operation position can be secured, and the related position of the auxiliary handle 70 does not change, so that the safety of the operator can be secured.

As shown in FIG. 12, outside the engine 73,
An engine cover 74 having a lower portion as a fulcrum is rotatably provided in an outward direction, and the operator seat 5 is provided as in the conventional embodiment shown in FIG.
5 and the engine cover 74 simultaneously rotate outward,
The engine cover 74 and the operation seat 55 are separately rotated to facilitate the opening / closing operation of the engine cover 74.

The connecting muffler 76 connected to the muffler 75 of the engine 73 as shown in FIGS.
The left and right frames (not shown) of the traveling vehicle body 77 of FIG.
The hexagonal muffler is provided with a predetermined length in the front-rear direction, nuts 79 are provided on both sides of the outer peripheral surface of the connecting muffler 76 at predetermined intervals in the front-rear direction, and a predetermined gap is provided outside the connecting muffler 76. A cover 80 is provided, and the muffler cover 80 is configured to be tightened and fixed to the nuts 79 of the connecting muffler 76 by the bolts 81.

The cover 82 is formed in a U shape and is mounted on the outer side of the muffler cover 80 with a predetermined space therebetween. A plurality of mounting auxiliary plates 83 are provided.
Also, the structure is such that the bolts 84 are tightened and fixed to the nuts 79 of the connecting muffler 76 via the muffler cover 80, and the upper part of the cover 82 is the intermediate frame 7.
8 is provided with a notch 85 at a predetermined width in the front-rear direction and a predetermined depth in the up-down direction so that the cover 82 can be moved in the front-rear direction. In addition to being configured, the cover 82 and the muffler cover 80 are configured to be movable upward to a position higher by a predetermined amount, and the distance between the cover 82 and the muffler cover 80 is increased by a predetermined amount. It is configured to prevent.

The mounting stay 86 has a cover 82 on one side.
The cover 87 is attached to the upper side by a bolt 87, a nut 88, etc., and the other side is tightened and fixed by a bolt 91 to a nut 90 of a front and rear frame 89 provided in the front and rear direction on the intermediate frame 78. Part 84
Is partially closed by the attachment stay 86. As described above, the temperature of the cover 82 itself can be lowered by widening the gap between the muffler cover 80 and the cover 82, and the cover 82 can be easily assembled by widening the notch portion 85. It became the composition.

The operation of the above embodiment will be described below. By starting the combine 1 and running the traveling device 2, the harvesting culms are raised by the raising 5 of the harvesting device 4, and the harvesting culms harvested by the cutting blade 6 are taken over by the harvesting transfer chain 7. The threshing machine 3 is transported to the upper part, and is taken over and held between the threshing chain 8 and the sandwiching rod 9 of the threshing machine 3, and the threshing machine 3
In the threshing chamber 14 from the front to the rear, threshing is performed by the handling teeth 18 of the handling drum 17 that is rotationally driven during this transport, and the threshing and straw waste that leaks from the threshing net 21 and the processing drum net 27. Grains removed from the discharge port 22 and the end of the processing cylinder net 27 are supplied onto a swinging swinging / sorting device 28 and swinged by an upper transfer rack 31, a Glensieeve 32, a chaff sheave 33, and a Straw rack 34. During the transfer, it is separated and sorted into grains, branch adhering grains, straw waste, dust, etc., and the grains and part of the branch adhering grains are dropped and supplied onto the upper sorting net 35a on the lower side, and this sorting is performed. By the two-stage sorting by the net 35a and the lower sorting net 35b, the grains and the branch-stem-attached grains are surely separated and sorted, and the falling grain is wind-sorted by the wind from the Karatan fan 38. The best things such as used grains are the first shelves 4
2a, 42b through the first grain collection gutter 41, the first deep-fried cylinder, and then supplied and stored in the grain storage tank 47.
Is discharged outside the machine.

The second products such as the sorted branches adhering particles falling from the tip portion of the lower sorting net 35b and the upper grain sieve 35 are the second collecting grain troughs 46 and the second lifting grains from the second lower shelves 44a and 44b. This second material supplied to the processing barrel chamber 24 through the cylinder and a part of the grain removal supplied from the threshing chamber 14 to the processing barrel chamber 24 through the opening 32 'of the threshing partition plate 33', The treated straw debris and a part of the treated products are returned to the threshing chamber 14 through the opening 32 'at the terminal end of the threshing partition plate 33'.

The selected straw waste and dust are sucked from the suction port 53 by the suction fan 48 and discharged from the discharge port 54 to the outside of the machine. The threshed culm is transferred from the threshing chain 8 and the sandwich rod 9 to the culm chain, transferred, cut by the cutter 11 and discharged to the outside of the machine.

[Brief description of drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 is an enlarged side sectional view of a thresher.

FIG. 2 is an enlarged plan sectional view of a swing sorting device.

[Fig. 3] Enlarged front view of the thresher

FIG. 4 is an overall side view of the combine.

FIG. 5 is an enlarged front sectional view of a part of the thresher.

FIG. 6 is an enlarged plan sectional view of a part of the thresher.

FIG. 7 is an enlarged front sectional view of a part of the thresher.

FIG. 8 is an enlarged plan sectional view of a part of the thresher.

FIG. 9 is an enlarged side view of a part of the combine.

FIG. 10 is an enlarged plan sectional view of a part of the combine.

FIG. 11 is an enlarged plan view of a part of the combine.

FIG. 12 is an enlarged side perspective view of a part of the combine.

13 is an enlarged sectional view taken along line AA of FIG.

14 is an enlarged sectional view taken along line BB of FIG.

FIG. 15 is an enlarged plan view in which the traveling vehicle body is partially broken.

FIG. 16 is an enlarged side view in which the traveling vehicle body is partially broken.

FIG. 17 is an enlarged side perspective view of a part of a conventional combine.

[Explanation of symbols]

 14 Threshing Room 17 Handling Cylinder 19 Handling Teeth 21 Threshing Net 28 Swing Sorting Device 31 Transfer Shelf 32 Glen Sieve 33 Chaff Sheave 34 Straw Rack 35a Upper Sorting Net 35b Lower Sorting Net

Claims (1)

[Claims] 1. A threshing net 21 below a threshing chamber 14 provided with a handling cylinder 19 axially supported by a handling barrel shaft 17 in the direction from the start end side to the end side of grain transfer to the inside of the threshing process of grain culms. On the upper part of the rocking / sorting device 28 for rocking / sorting by receiving the falling grain, a transfer rack 31, a grain sieve 32, from the starting end side in the transfer direction,
A chaff sheave 33, a straw rack 34, and the like are sequentially provided, and an upper selection net 35 having a predetermined mesh is provided on the lower side.
and a lower sorting net 35b having a mesh size larger than that of the upper sorting net 35a on the lower side.