JP5937444B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus. More specifically, the present invention relates to a threshing device in which a grain pan is provided on the conveyance start end side of the sheave case, and a sieve wire is provided at a conveyance terminal end of the grain pan.

  Conventionally, such a threshing apparatus has been publicly known. For example, in the threshing device described in Patent Document 1, the front gren pan arranged at the upper front end of the sheave case is extended rearward from the rear end of the front gren pan in a state of being aligned at a predetermined interval in the left-right direction. A plurality of sieve lines installed, an auxiliary grain pan arranged at the front upper part of the sheave case so as to be located below the front grain pan, and rearward from the rear end of the auxiliary grain pan in a state of being aligned at a predetermined interval in the left-right direction A plurality of auxiliary sieve wires extending toward the surface are provided. The sieve line and the auxiliary sieve line are used to screen the processed material and transfer the cut straw and the like backward while letting the single-grained grains, grain with branches and the like leak through.

JP 2007-20419 A

  However, in the threshing apparatus described in Patent Document 1, the sieve line and the auxiliary sieve line are formed to be substantially flat in a side view (so as to extend in a substantially straight line in the horizontal direction), so that the processed product is directed rearward. There was room for improvement in terms of smooth transport.

  This invention is made | formed in view of the above situations, and it aims at providing the threshing apparatus which can select | select, while conveying smoothly the threshing processed material from a grain pan by a sieve line.

Characteristic feature of the threshing apparatus according to the present invention, in its transport starting side in sieve casing, Gurenpan is provided, the transfer terminal end portion of the Gurenpan a plurality of sieve lines are provided, said plurality of sieve lines, It is formed in a substantially wave shape in a side view and is arranged in parallel in the transport direction in the sheave case .

According to this characteristic configuration, since the sieving line is formed in a substantially wave shape, a feeding action can be imparted to the threshing processed product by the sieving line. Therefore, the threshing processed material from the grain pan can be sorted while being smoothly conveyed by the sieving line.
Moreover, according to this characteristic structure, the threshing processed material from a grain bread can be screened in steps by a plurality of sieve lines, thereby improving the sorting accuracy.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the said sieving line inclining to conveyance end side rise in side view.

  According to this characteristic configuration, when the sieving line is inclined, a returning action can be imparted to the threshing product by the sieving line. Therefore, by returning the threshing processed product from the grain pan to the conveyance start end side by the sieving line, it is possible to secure many selection opportunities by the sieving line.

  A further characteristic configuration of the threshing apparatus according to the present invention is that, in the plurality of sieving lines, the sieving line on the conveyance end side is provided at a position higher than the sieving line on the conveyance start end side.

  According to this characteristic configuration, the threshing product is dropped from the sieving line on the conveyance end side at a high position, and the lump of the threshing product is loosened by the impact at the time of the fall, so that the selection accuracy can be improved. .

  According to a further feature of the threshing apparatus according to the present invention, in the plurality of sieving lines, the conveyance end side of the sieving line on the conveyance start end side is provided at a position higher than the conveyance start end side of the sieving line on the conveyance end side. There is that.

  According to this characteristic configuration, there is a step between the conveyance end side of the sieving line on the conveyance start side and the conveyance start end side of the sieving line on the conveyance end side, so that the sieving line on the conveyance start side and the conveyance end side are The threshing product is not easily clogged between the transfer with the sieving line. In addition, the threshing treatment product falls from the conveyance end side of the sieving line on the conveyance start end side to the conveyance start end side of the sieving line on the conveyance end side, and the lump of the threshing treatment product is loosened by the impact at the time of the fall, so the sorting accuracy Can be improved.

  A further characteristic configuration of the threshing apparatus according to the present invention is that the plurality of sieve lines are inclined upward in the conveyance end side in a side view, and the inclination angle is larger as the sieve line on the conveyance end side.

  According to this characteristic configuration, the return action imparted to the threshing product by the sieving line becomes larger toward the conveyance end side because the sieving line on the conveyance end side is inclined more greatly. Therefore, many selection opportunities by the sieving line can be ensured by largely returning the threshing processed product on the conveying end side to the conveying start end side by the sieving line.

  A further characteristic configuration of the threshing apparatus according to the present invention includes a tang for supplying a selection wind to the transfer end of the grain pan in the sheave case, and the transfer of one sieve line adjacent to the transfer direction in the plurality of sieve lines. A predetermined gap is formed between the end portion and the conveyance start end portion of the other sieve line.

  According to this characteristic configuration, since the sorting air blows through the gap between one sieving line and the other sieving line, the sorting wind flows smoothly. In addition, since there is a gap between one sieving line and the other sieving line, the threshing product is not easily clogged between the transfer between one sieving line and the other sieving line.

  A further characteristic configuration of the threshing apparatus according to the present invention is that, in the sheave case, a chaff sheave is provided below the sieve line, and the gap overlaps with a conveyance start end side of the chaff sheave in a plan view. .

  According to this characteristic configuration, even if the threshing product falls from the gap between one sieve line and the other sieve line, it falls on the conveyance start end side of the chaff sheave, so one sieve line and the other The threshing processed material dropped from the gap between the sieving lines can be passed on to the chaff sheave.

  A further characteristic configuration of the threshing apparatus according to the present invention is that, in the sheave case, a chaff sheave is provided below the sieving line, and the sieving line on the conveyance end side of the plurality of sieving lines is a conveyance start end of the chaff sheave. And at least a portion thereof overlaps with the conveyance start end side of the chaff sheave in plan view.

  According to this characteristic configuration, the threshing product from the sieving line on the conveyance end side falls on the conveyance start end side of the chaff sheave, so that the threshing product that has fallen from the sieving line on the conveyance end side can be inherited to the chaff sheave. it can.

  A further characteristic configuration of the threshing apparatus according to the present invention is that a first recovery part is provided below the sheave case, and a sieve line on a conveyance end side of the plurality of sieve lines is the first recovery part. It exists in the upper part, and at least one part overlaps with the said 1st collection | recovery part in planar view.

  According to this characteristic configuration, the threshing processed material from the sieving line on the conveyance end side falls on the first recovery unit, and therefore the threshing product that has fallen from the sieving line on the conveyance end side is recovered in the first recovery unit. can do.

  A further characteristic configuration of the threshing apparatus according to the present invention is that at least a part of the sieving line protrudes upward from an upper side portion of the sheave case.

  According to this characteristic configuration, the threshing product is dropped from the sieving line on the conveyance end side at a high position, and the lump of the threshing product is loosened by the impact at the time of the fall, so that the selection accuracy can be improved. .

  A further characteristic configuration of the threshing apparatus according to the present invention is provided with a tang that supplies a selection air to the transfer end portion of the grain pan in the sheave case, and the tang is supplied with a selection air supplied to a lower portion of the sheave case. And a second air passage through which the sorting air supplied to the upper part of the sheave case flows, and the second air passage is to supply the sorting air to the conveyance start end side of the sheave case. .

  According to this characteristic configuration, the sorting air can be distributed to the lower part and the upper part of the sheave case by distributing the sorting air to the lower part and the upper part of the sheave case by the first air path and the second air path. . Then, by supplying the sorting air to the conveyance start end side of the sheave case by the second air path, the sorting air can be spread from the conveyance start end side of the sheave case to the conveyance end side.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the said grain pan being provided only in the conveyance start end part of the said sheave case.

  According to this characteristic configuration, the grain recovery rate can be improved by shortening the grain pan and increasing the leakage area of the leakage selection unit.

Side surface sectional drawing which shows a threshing apparatus. Side surface sectional drawing which shows the front part side of a selection part. Front sectional drawing which shows the front part of a selection part. Side surface sectional drawing which shows the left side part of the front part side of a selection part. Side surface sectional drawing which shows the right side part by the side of the front part of a selection part. The diagram which shows the power transmission path | route of a power transmission shaft. The top view which shows a 1st sieve line and a 2nd sieve line. The perspective sectional view showing the 1st sieve line and the 2nd sieve line. Side surface sectional drawing which shows the rear part side of a selection part. The top view which shows a 1st Strollac, a 2nd Strollac, and a 3rd Strollac. The perspective sectional view which shows a 1st Strollac, a 2nd Strollac, and a 3rd Strollack.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  First, the whole structure of a threshing apparatus will be described with reference to FIG. In the following description, in the threshing apparatus, the conveyance direction of the threshing product is the front-rear direction, the conveyance start end direction is the front direction, and the conveyance end side direction is the rear direction.

  As shown in FIG. 1, the threshing apparatus threshs and sorts the cereal straw. The threshing apparatus includes a threshing unit 1 and a sorting unit 2. Incidentally, the threshing apparatus is provided in the ordinary combine in this embodiment, but may be provided in the self-decomposing combine.

  The threshing unit 1 threshs the cereal. The threshing unit 1 includes a handling cylinder 3 for threshing threshing. The handling cylinder 3 is rotatably supported by the handling chamber 4 via a rotation shaft 3a in the front-rear direction. Further, the threshing unit 1 is provided with a receiving net 5 for letting a threshing processed product by the handling cylinder 3 leak.

  The sorting unit 2 sorts the threshing processed product (the threshing processed product leaked from the receiving net 5). The sorting unit 2 includes a swing sorting device 6, a red pepper 7, a first collecting unit 8, and a second collecting unit 9. The details of Kara 7 will be described later.

  The swing sorting device 6 swings and sorts the threshing processed product (the threshing processed product leaked from the receiving net 5). The swing sorting device 6 includes a sheave case 10, a first grain pan 11, a first sieve line 12 and a second sieve line 13, a second grain pan 14, a chaff sheave 15, a first Strollac 16, A second Strollac 17 and a third Strollac 18 and a Glen sieve 19 are provided. The first sieving wire 12 and the second sieving wire 13, and the first Strollac 16, second Strollac 17 and third Strollac 18 will be described in detail later.

  The sheave case 10 is configured to be swingable. That is, the sheave case 10 is swung in the front-rear direction by the eccentric cam type rocking mechanism 20. The sheave case 10 includes a first gren pan 11, a first sieving line 12, a second sieving line 13, a second gren pan 14, a chaff sheave 15, a first strollac 16, a second stroller 17 and Three Strollacs 18 and a Glen sieve 19 are provided. Accordingly, the first Glen pan 11, the first sieve line 12 and the second sieve line 13, the second Glen pan 14, the chaff sheave 15, the first Strollac 16, the second Strollac 17 and the third Strollac 18, and the Glen Sheave 19 are It swings with the sheave case 10 in the front-rear direction.

  The first gren pan 11 sorts the threshing product by specific gravity. In other words, the first gren pan 11 swings in the front-rear direction together with the sheave case 10 so that the processed threshing material is conveyed in the rearward direction, and is divided into upper and lower layers such as sawdust having a small specific gravity and grains having a large specific gravity. To do. And the 1st Glen pan 11 is formed in the substantially wave shape in side view. The first sieving wire 12 is fixed to the waveform portion located on the most rear end side among the waveform portions in the first Glen pan 11. The first gren pan 11 is provided on the front end side of the sheave case 10 (only the front end portion of the sheave case 10). That is, the first Glen pan 11 is formed shorter than the second Glen pan 14 in a side view.

  The chaff sheave 15 sorts out the threshing product. That is, the chaff sheave 15 is provided with a plurality of angle-adjustable chaff flip plates 15a that are aligned at a predetermined interval in the front-rear direction. Then, the chaff sheave 15 swings in the front-rear direction together with the sheave case 10 to convey the wastes and the like that have not leaked backward while allowing grains to leak from between the cha-flip plates 15a. The angle of the char flip plate 15a is adjusted by an angle adjusting unit (not shown).

  Further, the chaff sheave 15 is inclined upward toward the rear end in a side view. The chaff sheave 15 is provided behind the second Glen pan 14. That is, the chaff sheave 15 is provided below the first sieve line 12 and the second sieve line 13. In other words, the chaff sheave 15 is provided behind the tang 7 in the sheave case 10.

  The second gren pan 14 sorts the threshing product by specific gravity. In other words, the second glen pan 14 swings in the front-rear direction together with the sheave case 10 so as to divide the threshing product into the upper and lower layers, such as sawdust having a small specific gravity and grains having a large specific gravity, etc. To do. The second Glen pan 14 is formed in a substantially wave shape in a side view. A corrugated portion 14 a deeper than other corrugated portions in the second Glen pan 14 is formed on the front end side of the second Glen pan 14. That is, the waveform portion 14 a is formed at the front end portion (front end portion) of the second Glen pan 14.

  The second Glen pan 14 is provided below the first Glen pan 11. That is, a first Glen pan 11 different from the second Glen pan 14 is provided above the second Glen pan 14. Further, the second Glen pan 14 and the chaff sheave 15 are arranged at substantially the same height. Then, the rear end portion of the second Glen pan 14 and the front end portion of the chaff sheave 15 (the chi-flip plate 15a positioned closest to the front end side) overlap in plan view.

  Glen sieve 19 sorts out the threshing product. That is, the grain sieve 19 conveys the grain with branches and the like that has not leaked backward with the sawdust and the like as the second thing while letting the single grain as the first thing. In addition, the Glen sheave 19 is provided behind the Tang Dynasty 7 and below the chaff sheave 15. A convex portion 19 a that protrudes upward is provided on the front end side of the grain sieve 19. For example, the convex part 19a is comprised by the plate-shaped member bent so that it might protrude upward (substantially mountain shape).

  The first recovery unit 8 recovers the single grain as the first thing. The first recovery unit 8 is provided below the front part of the sheave case 10.

  The second recovery unit 9 recovers the grain with branches and the like as a second thing. The second recovery part 9 is provided below the rear part of the sheave case 10.

  Next, the Kara 7 will be described with reference to FIGS.

  As shown in FIGS. 2 to 5, the tang 7 has a blade member 21, a fan case 22, a first air passage 23, and a second air passage 24.

  The blade member 21 is rotatably supported by the fan case 22 via a rotation shaft 21a in the left-right direction. That is, the blade member 21 is configured to be rotatable around the axis X in the left-right direction. The rotation direction of the blade member 21 is counterclockwise (the rotation direction A shown in FIG. 2) in a side view. And the blade member 21 is formed in the substantially circular arc shape recessed in the rotation direction upper side (direction opposite to the rotation direction A) in the side view. That is, the blade member 21 is formed in a substantially bow shape that swells to the upper side in the rotational direction (the side opposite to the rotational direction A) in a side view. In the present embodiment, a plurality of (for example, four) blade members 21 are arranged at equiangular intervals (for example, 90 degrees) around the axis X in the left-right direction in a side view. The blade member 21 is fixed to the rotating shaft 21a via a plurality of (for example, two) flange portions 21b formed in a substantially circular shape in a side view.

  The fan case 22 is configured to cover the blade member 21. The left and right sides of the fan case 22 are provided with suction ports 22a for sucking outside air.

  The suction port 22a is covered with an adjustment plate 25 so that its opening degree can be adjusted. The left adjustment plate 25 and the right adjustment plate 25 are connected by a single link rod 26. That is, the left and right adjustment plates 25 are configured to be swingable with the link rod 26 as a swing fulcrum. The left adjustment plate 25 is provided with a swing operation portion 27 for swinging the left and right adjustment plates 25.

  The swing operation unit 27 includes a guide hole 28 formed in the left adjustment plate 25, a guide shaft 29 inserted into the guide hole 28, and a nut 30 screwed into the guide shaft 29. Thus, when the left adjustment plate 25 swings along the guide shaft 29 via the guide hole 28, the right adjustment plate 25 also swings via the link rod 26. Thereby, the opening degree of the suction ports 22a on both the left and right sides is changed. That is, when the adjustment plates 25 on both the left and right sides swing through the link rod 26, the opening degree of the suction ports 22a on both the left and right sides is changed. In addition, by tightening the nut 30, the left adjustment plate 25 can be fixed at an arbitrary swinging position.

  In the first air passage 23, the sorting air supplied to the lower part of the sheave case 10 flows. The first air passage 23 is arranged below the Kara 7 and below the sheave case 10. That is, the first air passage 23 communicates with the lower part of the rear end side of the fan case 22. In addition, a guide plate 33 is provided below the front side of the chaff sheave 15 to guide the sorting air in the first air passage 23 upward in the rear side.

  The guide plate 33 is inclined upward in the rear end side in a side view. The guide plate 33 has an inclination angle α1 of an angle adjustment range β of a chi-flip plate 15a that is positioned on the most front end side among the plurality of char-flip plates 15a (hereinafter referred to as “front-end-side char flip plate”). Substantially coincides with the central angle α2. In other words, the inclination angle α1 of the guide plate 33 and the central angle α2 in the angle adjustment range β of the frontmost end side flip-flop plate 15a are substantially the same angle. In addition, it is preferable that the inclination angle α1 of the guide plate 33 and the central angle α2 in the angle adjustment range β of the front-most-side cha-flip plate 15a completely coincide (the same angle).

  In the second air passage 24, the sorting air supplied to the upper part of the sheave case 10 flows. The second air passage 24 is arranged at the upper part of the Kara 7 and in front of the sheave case 10. That is, the second air passage 24 communicates with the upper part on the front end side of the fan case 22. The second air passage 24 is formed so as to extend in the forward direction and to make a U-turn in the backward direction, and supplies the selection air to the front end side of the sheave case 10. The upper part of the second air passage 24 is formed by an upward inclined air passage 24a that inclines upward on the rear end side. The sheave case 10 is provided with a third air passage 32 which will be described later in detail, through which the sorting air from the second air passage 24 flows.

  A power transmission shaft 31 to which power from the engine E is transmitted is disposed above the second air passage 24 (see FIG. 6). That is, the power transmission shaft 31 is disposed at the upper part on the front end side of the upward inclined air passage 24 a of the second air passage 24. In addition, the power of the power transmission shaft 31 is transmitted to the handling cylinder 3, the Kara 7, and the like.

  The third air passage 32 is formed between the first Glen pan 11 and the second Glen pan 14. The third air passage 32 is formed in a substantially V shape in a side view by a downward inclined air passage 32a that is inclined downward toward the rear end side and an upward inclined air passage 32b that is inclined upward toward the rear end side. Yes.

  The inlet portion of the third air passage 32 (downward inclined air passage 32a) is provided across the front end side vertical wall (front wall) and the front end side lower wall of the sheave case 10. The inlet portion of the third air passage 32 (downward inclined air passage 32a) may be provided only on the front end side vertical wall (front wall) of the sheave case 10, or the front end side lower side of the sheave case 10. It may be provided only on the wall.

Further, the outlet of the third air passage 32 (upwardly inclined air passage 32 b) is disposed below the rear end side of the first Glen pan 11. And the 2nd Glen pan 14 is provided in the lower part of the exit part of the 3rd air path 32 (upward inclination air path 32b). In particular, in the present embodiment, the front end portion of the second Glen pan 14 forms a part of the third air passage 32 (the bottom surface of the upward inclined air passage 32b ).

  The inclination angle of the upward inclined air passage 32b of the third air passage 32 and the inclination angle of the first sieving line 12 and / or the second sieving line 13 are substantially the same. Furthermore, the inclination angle of the upward inclined air passage 32b of the third air passage 32 and the inclination angle of the upward inclined air passage 24a of the second air passage 24 are substantially the same.

  According to the above configuration, the sorting air is distributed to the lower part and the upper part of the sheave case 10 by the first air passage 23 and the second air passage 24 and supplied, so that the sorting air is supplied from the lower part to the upper part of the sheave case 10. Can be spread. Then, by supplying the sorting air to the front end side of the sheave case 10 through the second air passage 24, the sorting air can be spread from the front end side to the rear end side of the sheave case 10. As a result of the second air passage 24 being formed so as to make a U-turn, the air passage length of the second air passage 24 becomes longer, and thus the flow of the selected air tends to be laminar. Therefore, it is possible to supply the sorting air having a stable flow.

  Next, the first sieve line 12 and the second sieve line 13 will be described with reference to FIGS.

  As shown in FIGS. 7 and 8, the first sieving wire 12 and the second sieving wire 13 are juxtaposed in the front-rear direction at the rear end portion of the first gren pan 11. The first sieving line 12 and the second sieving line 13 are disposed above the second gren pan 14 and above the chaff sheave 15. That is, of the first sieving line 12 and the second sieving line 13, the second sieving line 13 is disposed above the chaff sheave 15 and overlaps with the chaff sheave 15 in plan view. A predetermined gap O is formed between the rear end portion of the first sieve line 12 and the front end portion of the second sieve line 13.

  The gap O overlaps with the front end side of the chaff sheave 15 in plan view. That is, the gap O overlaps with the rear end portion of the second Glen pan 14 in plan view.

  In place of the first sieving line 12 and the second sieving line 13, for example, a leakage selection unit other than the sieving line such as Strollac, sheet-metal punching type chaff sheave, mesh-like or sheet-metal punching type grain sheave may be employed. it can. However, from the viewpoint of increasing the amount of leakage from the leakage selection unit, it is preferable to employ a sieve line.

  The first sieve line 12 is formed in a substantially wave shape in a side view. For example, the 1st sieve line 12 is comprised by the piano wire. And the 1st sieve line 12 inclines in the rear end side raise in the side view. The rear end side of the first sieve line 12 is provided at a position higher than the front end side of the second sieve line 13. The first sieving line 12 is provided at the rear end of the first gren pan 11. That is, the first sieving line 12 is fixed to the rear end portion (the corrugated portion located closest to the rear end side) of the first gren pan 11.

  The second sieving line 13 is formed in a substantially wave shape in a side view. For example, the 2nd sieve line 13 is comprised by the piano wire. And the 2nd sieve line 13 inclines in the rear end side raise in the side view. The inclination angle of the second sieving line 13 is larger than the inclination angle of the first sieving line 12. Further, the second sieving line 13 is provided at a position higher than the first sieving line 12. Further, at least a part of the second sieving line 13 protrudes upward from the upper side portion of the sheave case 10. Further, the second sieving line 13 is disposed above the front end side of the chaff sheave 15, and at least a part thereof overlaps the front end side of the chaff sheave 15 in plan view. Furthermore, the second sieving line 13 is disposed above the first recovery unit 8 and at least a part thereof overlaps with the first recovery unit 8 in plan view.

  According to the above configuration, the first sieving wire 12 and the second sieving wire 13 are formed in a substantially wave shape, so that the first sieving wire 12 and the second sieving wire 13 feed the threshing product. Can be granted. Therefore, the first sieving line 12 and the second sieving line 13 can be selected while smoothly transporting the threshing product from the first gren pan 11.

  In addition, since the first sieve line 12 and the second sieve line 13 extend to above the chaff sheave 15, the chaff sheave 15 has a threshing processed product roughly selected by the first sieve line 12 and the second sieve line 13. Supplied. Therefore, the sorting load on the chaff sheave 15 can be reduced. If the sorting load applied to the chaff sheave 15 can be reduced, a large amount of crops can be sorted without increasing the size of the chaff sheave 15 and thus the threshing device.

  Next, the first Strollac 16, the second Strollac 17 and the third Strollac 18 will be described with reference to FIGS.

  As shown in FIGS. 9 to 11, the first Strollac 16 includes a plurality of first rack plates 16 a that are aligned at a predetermined interval D <b> 1 in the left-right direction. The first Strollac 16 is provided at the rear end of the chaff sheave 15. The rear end portion of the first Strollac 16 is disposed so as to overlap the second Strollac 17 (second rack plate fixing member 17b) in plan view.

  The second Strollac 17 is provided behind the first Strollac 16. The second stroller 17 includes a plurality of second rack plates 17a aligned at a predetermined interval D2 in the left-right direction, and a second rack plate fixing member to which front end portions of the plurality of second rack plates 17a are fixed. 17b and a second sieving wire 17c is provided between the adjacent second rack plates 17a. The rear end portion of the second Strollac 17 (second rack plate 17a) is disposed so as to overlap the front end portion of the third Strollac 18 (third rack plate fixing member 18b) in plan view.

  A second sieving wire 17c is fixed to the second rack plate fixing member 17b. That is, the second rack plate 17a is fixed to the lower surface of the second rack plate fixing member 17b, and the second sieving wire 17c is fixed to the upper surface of the second rack plate fixing member 17b.

  The third Strollac 18 is provided behind the second Strollac 17. The third Strollac 18 includes a plurality of third rack plates 18a aligned at a predetermined interval D3 in the left-right direction, and a third rack plate fixing member to which front end portions of the plurality of third rack plates 18a are fixed. 18b and a third sieving wire 18c between the adjacent third rack plates 18a.

  A third sieving wire 18c is fixed to the third rack plate fixing member 18b. That is, the third rack plate 18a is fixed to the lower surface of the third rack plate fixing member 18b, and the third sieve wire 18c is fixed to the upper surface of the third rack plate fixing member 18b.

  Here, as shown in FIG. 9, the second Strollac 17 and the third Strollac 18 are longer than the first Strollac 16 in the front-rear direction. And the 2nd Strollac 17 and the 3rd Strollac 18 are constituted by the same member. Moreover, the 2nd Strollac 17 and the 3rd Strollac 18 are arrange | positioned at the same height. The first Strollac 16 is disposed above the second Strollac 17 and the third Strollac 18. That is, of the first Strollac 16, the second Strollac 17, and the third Strollac 18, the first Strollac 16 is disposed highest.

  Moreover, as shown in FIG. 10, the 1st Strollac 16 and the 2nd Strollac 17 are arrange | positioned so that it may mutually overlap in planar view. And the 2nd Strollac 17 and the 3rd Strollac 18 are arranged so that it may mutually overlap in plane view. Further, the interval D2 between the plurality of second rack plates 17a and the interval D3 between the plurality of third rack plates 18a are the same. The interval D1 between the plurality of first rack plates 16a is larger than the interval D2 between the plurality of second rack plates 17a and the interval D3 between the plurality of third rack plates 18a.

  According to the above configuration, the threshing processed product from the rear end portion of the chaff sheave 15 falls from the first Strollac 16 to the second Strollac 17, and the lump of the threshing processed product is formed by the impact at the time of the fall. Unravel. Then, the loosened threshing product is sorted by the third Strollac 18 in addition to the second Strollac 17. Therefore, the recovery rate of the grains can be improved with respect to the threshing processed product from the rear end portion of the chaff sheave 15.

  The present invention can be applied to a threshing apparatus in which a grain pan is provided on the conveyance start end side of the sheave case, and a sieve wire is provided at the conveyance terminal end of the grain pan.

7 Karatsu 8 Most recovery part 10 Sheave case 11 First Glen bread (Glen bread)
12 First sieve line (sieve line)
13 Second sieve line (sieve line)
15 Chaff sheave 23 First air passage 24 Second air passage O Clearance

Claims (12)

In the sheave case, a grain pan is provided on the conveyance start end side,
A plurality of sieving lines are provided at the conveyance terminal end of the Glenpan,
The sieving apparatus, wherein the plurality of sieve lines are formed in a substantially wave shape in a side view and are juxtaposed in the transport direction in the sheave case .   The threshing apparatus according to claim 1, wherein the sieving line is inclined upward in the conveyance end side in a side view. The threshing device according to claim 2 , wherein, in the plurality of sieving lines, the sieving line on the conveyance end side is provided at a position higher than the sieving line on the conveyance start end side. 4. The threshing apparatus according to claim 3 , wherein, in the plurality of sieve lines, a conveyance end side of the sieve line on the conveyance start end side is provided at a position higher than a conveyance start end side of the sieve line on the conveyance end side. The threshing device according to any one of claims 1 to 4, wherein the plurality of sieving lines are inclined upward in the conveyance end side in a side view, and the inclination angle is larger as the sieving line on the conveyance end side. . A tang that supplies sorting air to the transfer end portion of the grain pan in the sheave case,
Between the transport starting end of the transfer terminal end portion of one sieve lines adjacent in the conveying direction in a plurality of sieve lines and the other sieve lines claims 1 to 5 in which the predetermined gap is formed The threshing device according to any one of the above. In the sheave case, a chaff sheave is provided below the sieving line,
The threshing device according to claim 6 , wherein the gap overlaps with a conveyance start end side of the chaff sheave in a plan view. In the sheave case, a chaff sheave is provided below the sieving line,
Sieve wire transfer terminal end side of the plurality of sieve lines are arranged in the conveying starting end side above the chaff sieve, and at least partially, from the claims 1 to overlap with the conveyance start end side of the chaff sieve in a plan view The threshing device according to any one of claims 7 to 9. Below the sheave case, a first recovery part is provided,
Sieve wire transfer terminal end side of the plurality of sieve lines are arranged above the lowest collecting unit, and at least partially, wherein the claim 1 that overlaps with the most recovery section in a plan view The threshing device according to any one of Items 8 to 8 . The threshing device according to any one of claims 1 to 9, wherein at least a part of the sieving line protrudes upward from an upper side portion of the sheave case. A tang that supplies sorting air to the transfer end portion of the grain pan in the sheave case,
The Chinese tang is
A first air passage through which the sorting air supplied to the lower part of the sheave case flows;
A second air passage through which the sorting air supplied to the upper part of the sheave case flows,
The threshing apparatus according to any one of claims 1 to 10 , wherein the second air passage supplies a selection air to a conveyance start end side of the sheave case. The said grain pan is a threshing apparatus as described in any one of Claim 1- Claim 11 provided only in the conveyance start end part of the said sheave case.

Images