JP2016195609A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a threshing device capable of supplying a sorting wind with stable currents.SOLUTION: The threshing device includes: a sieve case 10; a fan 7 supplying a sorting wind to the sieve case 10; a first wind passage 23 which is formed in the fan 7 and in which a sorting wind to be supplied to a lower part of the sieve case 10 flows; a second wind passage 24 which is formed in the fan 7 and in which a sorting wind to be supplied to an upper part of the sieve case 10 flows; and a third wind passage 32 which is formed in the sieve case 10 and in which a sorting wind from the second wind passage 24 flows. The second wind passage 24 extends in a carriage start edge side direction and U-turns in a carriage terminal side direction. A front vertical wall is arranged at a foremost edge of the sieve case 10 in a carriage direction, an opening is formed at the front vertical wall, an outlet of the second wind passage 24 faces the opening, and the sorting wind from the second wind passage 24 flows through the opening to the third wind passage 32.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a threshing apparatus. More specifically, the present invention relates to a threshing apparatus including a sheave case and a tang that supplies sorting air to the sheave case.

  Conventionally, such a threshing apparatus has been publicly known. For example, Patent Document 1 discloses a combine that includes a sheave case and a tang (a tang fan) that supplies sorting air to the sheave case. The tang fan has a first air passage (main air passage) for supplying the tang fan fan's sorting air and a second air passage (pre-air passage) for supplying the tang fan fan's sorting air. The pre-air path is formed so that the sorting air from the tang fan moves from the front lower side to the rear lower side of the chaff sheave.

JP 2010-187469 A

  However, in the combine described in Patent Document 1, the pre-air channel only supplies the selection air of the Kara fan in a straight line to the sheave case. That is, since the pre-wind path has a short wind path length, the flow of the selected wind tends to be turbulent, and therefore the flow of the selected wind tends to become unstable.

  This invention is made | formed in view of the above situations, and it aims at providing the threshing apparatus which can supply the selection wind with which the flow was stabilized.

  The characteristic configuration of the threshing apparatus according to the present invention includes a sheave case and a tang that supplies a sorting air to the sheave case, and the tang has a first air passage through which the sorting air supplied to a lower portion of the sheave case flows. 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 formed so as to extend in the conveyance start end direction and to make a U-turn in the conveyance end side direction, In addition, the sorting air is supplied to the conveyance start end side of the sheave case.

  According to this characteristic configuration, the sorting air can be distributed from the lower part to 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. As a result of the second air passage being formed to make a U-turn, the air passage length of the second air passage becomes longer, and therefore the flow of the selected air tends to be laminar. Therefore, it is possible to supply the sorting air having a stable flow.

  A further characteristic configuration of the threshing apparatus according to the present invention is that the second air passage is disposed at an upper portion of the tang and on a side of a conveyance start end of the sheave case.

  According to this characteristic configuration, the second air passage can be arranged in a compact manner by effectively using the space formed between the upper part of the carp and the conveyance start end side of the sheave case.

  In a further characteristic configuration of the threshing apparatus according to the present invention, the tang includes a blade member that can rotate around an axis center in a conveyance orthogonal direction in a plan view, and a fan case that covers the blade member, and the second The air passage is in communication with the upper part of the fan case on the conveyance start end side.

  According to this characteristic configuration, the U-turn shape that supplies the sorting air to the conveyance start end side of the sheave case by the U-turn-shaped second air passage by communicating the second air passage with the upper part of the conveyance start end side of the fan case. The second air passage can be easily configured.

  A further characteristic configuration of the threshing apparatus according to the present invention includes a power transmission shaft to which power from an engine is transmitted, and the power transmission shaft is disposed above the second air passage.

  According to this characteristic configuration, the power transmission shaft can be arranged in a compact manner by effectively using the space above the second air passage.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the upper part of said 2nd air path being formed in the upward inclination air path which inclines to conveyance end side rise.

  According to this characteristic configuration, since the sorting air is guided upward along the upward inclined air passage that forms the upper portion of the second air passage, the sorting air can be reliably supplied to the upper portion of the sheave case.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the said power transmission shaft being arrange | positioned at the conveyance start end side upper part of the said upward inclination air path.

  According to this characteristic configuration, the power transmission shaft can be arranged in a compact manner by effectively using the space above the conveyance start end side of the upward inclined air passage.

  A further characteristic configuration of the threshing apparatus according to the present invention is that the sheave case is formed with a third air passage through which the selected air from the second air passage flows.

  According to this characteristic configuration, the sorting air from the second air passage flows through the third air passage, so that the sorting air can be reliably supplied to the upper part of the sheave case.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the inlet part of the said 3rd air path being provided in the conveyance start end side vertical wall of the said sheave case.

  According to this feature configuration, since the inlet portion of the third air passage opens in the front wall of the sheave case on the conveyance start end side, the second air passage can be easily connected to the inlet portion of the third air passage. .

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the inlet part of the said 3rd air path being provided in the conveyance start end side lower wall of the said sheave case.

  According to this characteristic configuration, since the inlet portion of the third air passage opens in the lower wall at the conveyance start end side of the sheave case, the second air passage can be easily connected to the inlet portion of the third air passage. .

  According to a further characteristic configuration of the threshing apparatus according to the present invention, the third air path includes a downward inclined air path that is inclined downward toward the conveyance end side and an upward inclined air path that is inclined upward toward the conveyance end side. Is formed in a substantially V-shape.

  According to this characteristic configuration, the sorting air having a stable flow can be supplied by collecting the upward sorting air from the second air passage after collecting it once.

  A further characteristic configuration of the threshing apparatus according to the present invention is that, in the sheave case, a substantially wave-shaped Glen pan is provided in a lower part of the outlet portion of the third air passage in a side view.

  According to this characteristic configuration, the sorting air from the third air passage can be directly supplied to the threshing product on the grain pan.

  A further characteristic configuration of the threshing apparatus according to the present invention is that a corrugated portion deeper than other corrugated portions in the Glen pan is formed on the transport start end side of the Glen pan.

  According to this characteristic configuration, even when the threshing processed product flows back in the direction of the conveyance start end on the grain pan, the threshing processed product falls in the deep corrugated portion, and therefore, the threshing processed product further flows back in the direction of the conveyance start end. Be blocked. Therefore, it can prevent that a threshing processed material falls from the conveyance start end part of a grain pan.

  A further characteristic configuration of the threshing apparatus according to the present invention is such that a Glen pan different from the Glen pan is provided above the Glen pan in the sheave case, and an outlet portion of the third air passage is formed of the other Glen pan. It is located below the conveyance end side.

  According to this characteristic configuration, the sorting air from the third air passage can be directly supplied to the threshing processed product falling from the conveyance terminal portion of another Glen pan.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in that the said another gren pan is 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 another grain pan and increasing the leakage area of the leakage selection unit.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the said another grain bread being shorter than the said grain bread in side view.

  According to this characteristic configuration, the processed threshing product on another gren pan can be dropped on the gren pan and further selected with the gren pan.

  The further characteristic structure of the threshing apparatus which concerns on this invention exists in the sieving line being provided in the conveyance termination part of said another grain pan.

  According to this characteristic structure, the threshing processed material from another gren bread can be selected with a sieving line.

  A further characteristic configuration of the threshing apparatus according to the present invention is that a plurality of sieve lines are arranged in parallel in the conveyance direction at the conveyance terminal portion of the another grain pan, and the plurality of sieve lines are raised on the conveyance terminal side in a side view. And the inclination angle is larger as the sieving line on the conveyance end side.

  According to this characteristic configuration, it is possible to improve the sorting accuracy by sorting the threshing product from another grain pan stepwise by a plurality of sieve lines. And since the return action given to the threshing processed material by the sieving line becomes larger toward the conveying terminal side by being inclined more greatly as the sieving line on the conveying terminal side, the threshing processed material on the conveying terminal side is transferred to the conveying start end side. It is possible to secure a further selection opportunity by sieving lines.

  A further characteristic configuration of the threshing apparatus according to the present invention is such that a chaff sheave is provided in the sheave case at a side of the end of conveyance of the red pepper, and the chaff sheave is adjustable in angle with a predetermined interval in the conveyance direction. A guide plate that guides the sorting air of the first air path upward on the conveyance end side, and the guide plate is conveyed in a side view. Inclining upward toward the end side, and the inclination angle substantially coincides with the central angle in the angle adjustment range of the char flip plate located closest to the conveyance start end among the plurality of char flip plates.

  According to this characteristic configuration, since the sorting air in the first air path guided by the guide plate flows along the cha-flip plate at the same angle, the flow of the sorting air is improved.

  A further characteristic configuration of the threshing apparatus according to the present invention is that, in the sheave case, a chaff sheave is provided on the side of the transport end of the red pepper, on the side of the transport end of the red pepper, and below the chaff sheave, A grain sheave is provided, and a convex portion that protrudes upward is provided on the conveyance start end side of the grain sheave.

  According to this characteristic configuration, even when the threshing processed product flows backward on the grain sieve toward the conveyance start end side, the threshing processed product is blocked by the convex portion. Therefore, it is possible to prevent the threshing processed product from falling into the Karatsu from the conveyance start end of the Glen sieve.

  In a further characteristic configuration of the threshing apparatus according to the present invention, the tang includes a blade member that can rotate around an axis in the orthogonal direction of conveyance in a plan view, and the blade member is on the upper side in the rotation direction in a side view. It is formed in a substantially arc shape that is recessed.

  According to this characteristic configuration, the surface area of the blade member can be increased without increasing the diameter of the blade member by forming the blade member in a substantially arc shape. Therefore, it is possible to increase the air volume of the sorting air without increasing the fan case.

  According to a further characteristic configuration of the threshing apparatus according to the present invention, the tang includes a blade member that can rotate around an axis in a direction perpendicular to the conveyance direction in a plan view, and a fan case that covers the blade member. An inlet for sucking in outside air is provided on both sides of the inlet, and the inlet is covered with an adjustment plate so that its opening degree can be adjusted. The adjustment plate on one side and the adjustment plate on the other side The opening of the suction ports on both sides is changed when the adjustment plates on both sides are swung through the link rods.

  According to this characteristic configuration, only the one adjustment plate is swung, and the other adjustment plate is also swung. Therefore, the opening degree of the suction ports on both sides can be changed at a time by swinging one adjustment plate.

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 (is 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 32a).

  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 sent 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.

  INDUSTRIAL APPLICABILITY The present invention can be used for a threshing apparatus including a sheave case and a karasu which supplies a sorting wind to the sheave case.

7 Karatsu 10 Sheave Case 11 First Glen Pan (Another Glen Pan)
12 First sieve line (sieve line)
13 Second sieve line (sieve line)
14 Second Glenpan (Glenpan)
14a Corrugated portion 15 Chaff sheave 15a Chaff flip plate 19 Glen sheave 19a Convex portion 21 Blade member 22 Fan case 22a Suction port 23 First air passage 24 Second air passage 24a Upward inclined air passage 25a Adjustment plate 26 Link rod 31 Power transmission shaft 32 First Three air passages 32a Downward inclined airway 32b Upward inclined airway 33 Guide plate E Engine α1 Inclination angle α2 Center angle β Angle adjustment range

  The present invention relates to a threshing apparatus. More specifically, the present invention relates to a threshing apparatus including a sheave case and a tang that supplies sorting air to the sheave case.

  Conventionally, such a threshing apparatus has been publicly known. For example, Patent Document 1 discloses a combine that includes a sheave case and a tang (a tang fan) that supplies sorting air to the sheave case. The tang fan has a first air passage (main air passage) for supplying the tang fan fan's sorting air and a second air passage (pre-air passage) for supplying the tang fan fan's sorting air. The pre-air path is formed so that the sorting air from the tang fan moves from the front lower side to the rear lower side of the chaff sheave.

JP 2010-187469 A

  However, in the combine described in Patent Document 1, the pre-air channel only supplies the selection air of the Kara fan in a straight line to the sheave case. That is, since the pre-wind path has a short wind path length, the flow of the selected wind tends to be turbulent, and therefore the flow of the selected wind tends to become unstable.

  This invention is made | formed in view of the above situations, and it aims at providing the threshing apparatus which can supply the selection wind with which the flow was stabilized.

The characteristic configuration of the threshing apparatus according to the present invention is as follows.
With a sheave case,
Kara to supply sorting wind to the sheave case,
A first air passage that is formed in the tang and flows through the sorting air supplied to the lower part of the sheave case;
A second air passage formed in the tang and through which the sorting air supplied to the top of the sheave case flows;
Formed in the sheave case, and a third air passage through which the selected air from the second air passage flows, and
The second air path is formed so as to extend in the conveyance start end direction and to make a U-turn in the conveyance end side direction,
A front vertical wall is provided at the foremost end in the conveying direction of the sheave case, and an opening is formed in the front vertical wall.
The outlet portion of the second air passage is opposed to the opening, and the selected air from the second air passage is configured to flow to the third air passage through the opening.

According to this characteristic configuration, the sorting air can be distributed from the lower part to 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. As a result of the second air passage being formed to make a U-turn, the air passage length of the second air passage becomes longer, and therefore the flow of the selected air tends to be laminar. Therefore, it is possible to supply the sorting air having a stable flow.
In addition, since the sorting air from the second air passage flows through the third air passage, the sorting air can be reliably supplied to the upper part of the sheave case.

Furthermore, a threshing apparatus having the following characteristic configuration is also suitable.
The tang is provided with a blade member that can rotate around the axis in the conveyance orthogonal direction in a plan view, and a fan case that covers the blade member,
A front wall portion of the fan case is formed in a shape along a rotation locus drawn by a tip of the blade member, and an upper wall portion of the fan case is moved from the rear side in the transport direction toward the front side. Is formed in a shape that leaves the outside in the radial direction,
The direction of rotation of the blade member is set to be counterclockwise when viewed from the left side, and the fan case communicates with the second air passage via the space between the upper end of the front wall portion and the front end of the upper wall portion. Has been.
-The upper wall portion of the fan case is inclined downward toward the conveyance start end side beyond the top of the fan case,
The second air passage extends along the upper wall portion of the fan case in a state where the second air passage is entirely inclined downward toward the conveyance start end side.
The tang is provided with a blade member that can rotate around the axis in the conveyance orthogonal direction in a plan view, and a fan case that covers the blade member,
The inlet portion of the second air passage is formed in a state communicating with the fan case on the front side in the transport direction from the axis of the blade member,
An upper wall and a lower wall are provided in a rear side portion of the second air passage after the direction is changed to the conveyance end side, and a conveyance start end side portion of the lower wall is located on a lower front side than a top portion of the fan case. Position to,
The front vertical wall portion of the sheave case is located on the rear side in the transport direction from the axis of the blade member,
The second air passage extends to the opening of the front vertical wall portion.
The upper wall and the lower wall of the second air passage are formed as inclined walls that rise rearward.
The front part of the upper wall part in the fan case extends in a state of being in contact with the lower wall of the second air path in the vertical direction.

The first grain pan is extended from the front vertical wall portion of the sheave case toward the conveyance end side, and the sieve wire is extended from the rear end of the first grain pan toward the conveyance end side,
A second Glen pan is provided below the first Glen pan, and a chaff sheave extends from the rear end of the second Glen pan toward the conveyance end side,
The third air path is formed between the first gren pan and the second gren pan, and the sorting air flowing through the third air path can be blown from the lower side to the sieve line,
On the lower side of the front vertical wall portion in the sheave case, an inclined portion extending rearwardly downward from the front vertical wall portion is provided,
A second opening is provided in the inclined portion, and the sorting air from the first air passage can be blown from the lower side to the chaff sheave through the second opening.
The second Glen pan is extended rearward from the rear end of the first Glen pan;
The sieve line is located above the second Glen pan.

-A plurality of the sieve lines are juxtaposed in the transport direction at the transport end portion of the first grain pan,
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 lines on the conveyance end side.
According to this characteristic configuration, it is possible to improve the sorting accuracy by sorting the threshing product from the first grain bread stepwise by a plurality of sieve lines. And since the return action given to the threshing processed material by the sieving line becomes larger toward the conveying terminal side by being inclined more greatly as the sieving line on the conveying terminal side, the threshing processed material on the conveying terminal side is transferred to the conveying start end side. It is possible to secure a further selection opportunity by sieving lines.
The second Glen pan is formed in a substantially wave shape in a side view;
A corrugated portion deeper than other corrugated portions in the second Glen pan is formed on the conveyance start end side of the second Glen pan.
According to this characteristic configuration, even when the threshing processed product flows back in the direction of the conveyance start end on the grain pan, the threshing processed product falls in the deep corrugated portion, and therefore, the threshing processed product further flows back in the direction of the conveyance start end. Be blocked. Therefore, it can prevent that a threshing processed material falls from the conveyance start end part of a grain pan.
The third air path is formed in a substantially V shape in a side view by a downward inclined air path that is inclined downward toward the conveyance end side and an upward inclined air path that is inclined upward toward the conveyance end side.
According to this characteristic configuration, the sorting air having a stable flow can be supplied by collecting the upward sorting air from the second air passage after collecting it once.

Furthermore, a threshing apparatus having the following characteristic configuration is also suitable.
- Before SL top of the second air path, that is formed by the upward tilt air passage which is inclined transfer terminal end side up.

  According to this characteristic configuration, since the sorting air is guided upward along the upward inclined air passage that forms the upper portion of the second air passage, the sorting air can be reliably supplied to the upper portion of the sheave case.

- wherein the transport starting side upper part of the upwardly inclined air path of the second air path, that is arranged power transmission shaft to which power from the engine is transmitted.

  According to this characteristic configuration, the power transmission shaft can be arranged in a compact manner by effectively using the space above the conveyance start end side of the upward inclined air passage.

An inclined portion extending downward from the front vertical wall portion is provided below the front vertical wall portion in the sheave case;
The opening of the front vertical wall portion is extended to the conveyance start end side of the inclined portion.

Furthermore, a threshing apparatus having the following characteristic configuration is also suitable.
- The front Symbol transfer terminal end side of the winnowing fan in sieve case, chaff sieve is provided,
The chaff sheave includes a plurality of angle-adjustable chaff flip plates aligned at a predetermined interval in the transport direction,
Below the conveyance start end side of the chaff sheave, there is provided a guide plate for guiding the sorting air of the first air path upward on the conveyance end side,
The guide plate is inclined upward in the conveyance end side in a side view, and the inclination angle is substantially the same as the central angle in the angle adjustment range of the char flip plate located closest to the conveyance start end among the plurality of char flip plates. that match.

  According to this characteristic configuration, since the sorting air in the first air path guided by the guide plate flows along the cha-flip plate at the same angle, the flow of the sorting air is improved.

· Before Symbol sieve case, the transfer terminal end side of the winnowing fan is chaff sieve is provided, below the chaff sieve there is better transfer terminal end side of the winnowing fan, Gurenshibu is provided,
The conveying starting end side of the Gurenshibu is that have convex portions protruding upward is provided.

  According to this characteristic configuration, even when the threshing processed product flows backward on the grain sieve toward the conveyance start end side, the threshing processed product is blocked by the convex portion. Therefore, it is possible to prevent the threshing processed product from falling into the Karatsu from the conveyance start end of the Glen sieve.

· Before Symbol winnowing fan comprises a rotatable blade member about the axis of the conveying direction orthogonal in plan view,
The vane member, that is formed in a substantially arcuate shape concave in the direction of rotation upstream side in a side view.

  According to this characteristic configuration, the surface area of the blade member can be increased without increasing the diameter of the blade member by forming the blade member in a substantially arc shape. Therefore, it is possible to increase the air volume of the sorting air without increasing the fan case.

- before Symbol winnowing fan is,
A blade member rotatable around an axis in a direction perpendicular to the conveyance direction in plan view;
A fan case covering the blade member,
On both sides of the fan case, there are provided suction ports for sucking outside air,
The suction port is covered by an adjustment plate so that its opening degree can be adjusted,
The adjustment plate on one side and the adjustment plate on the other side are connected by a single link rod,
Said by both sides of the adjusting plate via the link rod is rocked, the opening degree of both sides of the inlet port Ru changed.

  According to this characteristic configuration, only the one adjustment plate is swung, and the other adjustment plate is also swung. Therefore, the opening degree of the suction ports on both sides can be changed at a time by swinging one adjustment plate.

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 (is 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 sent 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.

  INDUSTRIAL APPLICABILITY The present invention can be used for a threshing apparatus including a sheave case and a karasu which supplies a sorting wind to the sheave case.

7 Karatsu 10 Sheave Case 11 First Glen Pan (Another Glen Pan)
12 First sieve line (sieve line)
13 Second sieve line (sieve line)
14 Second Glenpan (Glenpan)
14a Corrugated portion 15 Chaff sheave 15a Chaff flip plate 19 Glen sheave 19a Convex portion 21 Blade member 22 Fan case 22a Suction port 23 First air passage 24 Second air passage 24a Upward inclined air passage 25a Adjustment plate 26 Link rod 31 Power transmission shaft 32 First Three air passages 32a Downward inclined airway 32b Upward inclined airway 33 Guide plate E Engine
X Blade shaft axis α1 Inclination angle α2 Center angle β Angle adjustment range

Claims (18)

With a sheave case,
Kara to supply sorting wind to the sheave case,
A first air passage that is formed in the tang and flows through the sorting air supplied to the lower part of the sheave case;
A second air passage formed in the tang and through which the sorting air supplied to the top of the sheave case flows;
Formed in the sheave case, and a third air passage through which the selected air from the second air passage flows, and
The second air path is formed so as to extend in the conveyance start end direction and to make a U-turn in the conveyance end side direction,
A front vertical wall is provided at the foremost end in the conveying direction of the sheave case, and an opening is formed in the front vertical wall.
A threshing apparatus configured such that an outlet portion of the second air passage is opposed to the opening, and a selection air from the second air passage flows through the opening to the third air passage. The tang is provided with a blade member that can rotate around an axis in the conveyance orthogonal direction in a plan view, and a fan case that covers the blade member,
A front wall portion of the fan case is formed in a shape along a rotation locus drawn by a tip of the blade member, and an upper wall portion of the fan case is moved from the rear side in the transport direction toward the front side. Is formed in a shape that leaves the outside in the radial direction,
The direction of rotation of the blade member is set to be counterclockwise when viewed from the left side, and the fan case communicates with the second air passage via the space between the upper end of the front wall portion and the front end of the upper wall portion. The threshing apparatus according to claim 1. The upper wall portion of the fan case is inclined downward to the conveyance start end side beyond the top of the fan case,
The threshing apparatus according to claim 2, wherein the second air passage is inclined along the upper wall portion of the fan case in a state where the second air passage is entirely inclined downward toward the conveyance start end. The tang is provided with a blade member that can rotate around an axis in the conveyance orthogonal direction in a plan view, and a fan case that covers the blade member,
The inlet portion of the second air passage is formed in a state communicating with the fan case on the front side in the transport direction from the axis of the blade member,
An upper wall and a lower wall are provided in a rear side portion of the second air passage after the direction is changed to the conveyance end side, and a conveyance start end side portion of the lower wall is located on a lower front side than a top portion of the fan case. Position to,
The front vertical wall portion of the sheave case is located on the rear side in the transport direction from the axis of the blade member,
The threshing apparatus according to any one of claims 1 to 3, wherein the second air passage extends to the opening of the front vertical wall portion.   The threshing apparatus according to claim 4, wherein the upper wall and the lower wall of the second air passage are formed as inclined walls that rise rearward.   The threshing apparatus according to claim 4 or 5, wherein a front portion of the upper wall portion of the fan case extends in a state of being in vertical contact with the lower wall of the second air passage. The first grain pan extends from the front vertical wall portion of the sheave case toward the conveyance end side, and the sieve wire extends from the rear end of the first grain pan toward the conveyance end side,
A second glen pan is provided below the first gren pan, and a chaff sheave extends from the rear end of the second gren pan toward the conveyance end side,
The third air path is formed between the first gren pan and the second gren pan, and the sorting air flowing through the third air path can be blown from the lower side to the sieve line,
On the lower side of the front vertical wall portion in the sheave case, an inclined portion extending rearwardly downward from the front vertical wall portion is provided,
The second opening is provided in the inclined portion, and the sorting air from the first air passage can be blown from the lower side to the chaff sheave through the second opening. A threshing apparatus according to claim 1. The second Glen pan is extended rearward from the rear end of the first Glen pan,
The threshing apparatus according to claim 7, wherein the sieving line is located above the second gren pan. A plurality of the sieve lines are arranged in parallel in the transport direction at the transport terminal portion of the first Glen pan,
The threshing device according to claim 7 or 8, wherein the plurality of sieving lines are inclined upward in the conveyance end side in a side view, and the inclination angle is larger toward the sieving line on the conveyance end side. The second Glen pan is formed in a substantially wave shape in a side view,
The threshing device according to any one of claims 7 to 9, wherein a corrugated portion deeper than other corrugated portions in the second Glen pan is formed on a conveyance start end side of the second Glen pan.   The third air passage is formed in a substantially V shape in a side view by a downward inclined air passage that is inclined downward toward the conveyance end side and an upward inclined air passage that is inclined upward toward the conveyance end side. Threshing apparatus as described in any one of 10-10.   The upper part of said 2nd air path is a threshing apparatus as described in any one of Claims 1-11 currently formed in the upward inclination air path which inclines to conveyance end side rise.   The threshing device according to claim 12, wherein a power transmission shaft to which power from an engine is transmitted is arranged at an upper part on the conveyance start end side in the upward inclined air passage of the second air passage. On the lower side of the front vertical wall portion in the sheave case, an inclined portion extending rearwardly downward from the front vertical wall portion is provided,
The threshing apparatus according to any one of claims 1 to 13, wherein the opening of the front vertical wall portion is extended to a conveyance start end side of the inclined portion. In the sheave case, a chaff sheave is provided on the side of the transport end of the red pepper,
The chaff sheave includes a plurality of angle-adjustable chaff flip plates aligned at a predetermined interval in the transport direction,
Below the conveyance start end side of the chaff sheave, there is provided a guide plate for guiding the sorting air of the first air path upward on the conveyance end side,
The guide plate is inclined upward in the conveyance end side in a side view, and the inclination angle is substantially the same as the central angle in the angle adjustment range of the char flip plate located closest to the conveyance start end among the plurality of char flip plates. The threshing device according to any one of claims 1 to 14, which matches. In the sheave case, a chaff sheave is provided on the side of the transport end of the tang,
On the side of the transport end of the tang and below the chaff sheave, a Glen sheave is provided,
The threshing apparatus as described in any one of Claims 1-15 in which the convex part which protrudes upwards is provided in the conveyance start end side of the said Glen sheave. The tang is provided with a blade member that can rotate around an axis in the direction perpendicular to the conveyance direction in plan view,
The threshing device according to any one of claims 1 to 16, wherein the blade member is formed in a substantially arc shape that is recessed toward the upper side in the rotation direction in a side view. The Chinese tang is
A blade member rotatable around an axis in a direction perpendicular to the conveyance direction in plan view;
A fan case covering the blade member,
On both sides of the fan case, there are provided suction ports for sucking outside air,
The suction port is covered by an adjustment plate so that its opening degree can be adjusted,
The adjustment plate on one side and the adjustment plate on the other side are connected by a single link rod,
The threshing device according to any one of claims 1 to 17, wherein the opening degree of the suction port on both sides is changed by swinging the adjustment plates on both sides via the link rod.

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