JP2010252720A - Chaff sieve structure in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chaff sieve structure in a combine harvester for enabling efficient assembly of a chaff sieve in a sieve case. <P>SOLUTION: In the chaff sieve structure in the combine harvester configured to alter the opening of the chaff sieve for sorting threshed products, the lateral width of the chaff sieve 62 is formed into a size to house it between right and left side boards 27a of the sieve case 27. A pair of right and left chaff sieve mounting frames 86 are configured to mount on the right and left side boards 27a of the sieve case 27. An operational part 81 for altering the angle of a sorting plate 73 engages a supporting frame 74 or the sorting plate 73 from the outside of the sieve case 27, and an operational device 75 is attached to the side board 27a of the sieve case 27 via an attachment member 101a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a chaff sheave structure in a combine that is provided with a chaff sheave that sorts a threshing processed product in a sorting section located below a handling room of a threshing device, and is configured to be able to change the opening of the chaff sheave.

  Conventionally, as shown in Patent Document 1 as a chaff sheave structure in a combine (hereinafter, the code of Patent Document 1 is used), the sorting unit 3 located below the handling room of the threshing device is connected to the receiving network 6. A sheave case 9 having a chaff sheave 19 for sorting the threshing processed product that has fallen is provided so as to be swingable back and forth, and as the chaff sheave 19, a plurality of sorting plates (cha flip plates 19a) are arranged in parallel back and forth at predetermined intervals. The sorting plate 19a is supported so as to be swingable around the horizontal axis, and a long support frame (connecting plate 29) is connected across the plurality of sorting plates 19a. A configuration in which the angle of the sorting plate 19a is changed is known.

  In Patent Document 1, a lateral support shaft (locking pin 28) provided at the lower end of the sorting plate 19a is pivotally supported on a support frame (connecting plate 29), and one sorting plate 19a is provided on the operation lever 36. One end is pivotally supported on the support shaft 28 at the lower end of the control lever 36, and the long hole 37 is formed in the middle part of the operation lever 36, and the locking pin 28 at the lower end of the sorting plate 19a is fitted inside the long hole 37. Within the range of the long hole 37, the sorting plate 19 a can be swung, and a coil spring 30 a that biases the sorting plate 19 a in the closing direction is provided on the locking pin 28, so that the sorting plate 19 a is normally at the upper end of the long hole 37. It is configured to meet. The operation lever 36 is positioned on the outside of the side wall 26 of the sheave case 9 so that the lower end portion of the operation lever 36 can be detachably engaged with the engagement pin 38, and the operation lever 36 is connected to the engagement pin 38. By changing the engaging position, the opening of the chaff sheave is changed.

  In Patent Document 1, as shown in FIGS. 5 and 6 (a), among the upper and lower horizontal support shafts 25 and 28 attached to the sorting plate 19a, the support related to the operation of the operation lever 36 is provided. The shaft 25 and the locking pin 28 extend outward through the side wall 26 of the sheave case 9 and are linked to the operation lever 36. Thereby, in the chaff sheave 19 in a state where the support shaft 25 and the locking pin 28 are assembled, the dimensional relationship is such that the chaff sheave 19 cannot be inserted between the left and right side walls 26 of the sheave case 9.

  Conventionally, as shown in Patent Document 2 (hereinafter, the code of Patent Document 2 is used) as a chaff sheave structure in a combine, the sorting unit B positioned below the handling chamber 3 of the threshing device receives A sheave case 10 provided with a chaff sheave 7 that sorts the threshing product that has fallen from the net 4 is provided so as to be swingable back and forth, and a plurality of sorting plates (chuff plates 11) that constitute the chaff sheave 7 are provided back and forth at predetermined intervals. A plurality of sorting plates 11 that are arranged in parallel and swingably supported around the horizontal axis are connected to a long support frame (link member 13) in the front-rear direction. A configuration in which the angle of 11 is changed is known.

  In FIG. 2 of Patent Document 2, the pivot shaft 14 provided at the upper end of one sorting plate 11 and the support pin 18 provided at the lower end are provided between the sorting plate 11 and the link member 13. When the chaff sheave 7 is attached to the sheave case 10, the lower support pins 18 protrude outward from the left and right vertical walls 10 </ b> L and 10 </ b> R of the sheave case 10. The entire width between the left and right support pins 18, 18 is wider than the width between the left and right vertical walls 10L, 10R of the sheave case 10, and the sorting plate 11, the support member 12, and the link member 13 are assembled. The chaff sheave 7 has such a dimensional relationship that it cannot be inserted between the left and right vertical walls 10 </ b> L and 10 </ b> R of the sheave case 10.

JP 2000-262138 A Japanese Patent Laid-Open No. 10-75640

  An object of the present invention is to provide a chaff sheave structure in a combine that allows a chaff sheave to be efficiently assembled to a sheave case so that the chaff sheave can be attached to the sheave case in a united state.

[Configuration of the first invention]
According to the first aspect of the present invention, a sheave case provided with a chaff sheave for sorting the threshing product is provided in the sorting portion located below the handling room of the threshing device so as to be swingable back and forth, and the chaff sheave is provided with a plurality of sorting plates. And a pair of left and right chaff sheave mounting frames in which each of the sorting plates is rotatably mounted around a horizontal axis in a state where the plurality of sorting plates are arranged in parallel at the front and rear at a predetermined interval, and across the respective sorting plates A pair of left and right support frames that are pivotably mounted, and the pair of left and right chaff sheave mounting frames are fixed to the left and right side plates of the sheave case, and the support frame is moved back and forth with respect to the sheave case. In the chaff sheave structure in a combine that is configured to change the angle of the plurality of sorting plates by moving the chaff sheave, thereby changing the opening of the chaff sheave. The left and right widths of the chaff sheave comprising the sorting plate, the pair of left and right chaff sheave mounting frames, and the pair of left and right support frames are formed so as to fit within the left and right side plates of the sheave case, and the pair of left and right chaff sheave mounting frames It is configured to be attachable to the left and right side plates of the sheave case, and an attachment member is provided on the left and right side plates of the sheave case to attach the operation tool so as to be rotatable around an axis parallel to the horizontal axis. An operation part for operating the support frame is attached to the operation tool, a hole allowing the position change of the operation part is formed in the left and right side plates of the sheave case, and the operation part is moved from the outside of the sheave case. The operating frame is engaged with the support frame or the sorting plate through the hole, and the operation tool is attached to the left or right side plate of the sheave case via the attachment member. And features.

[Operation of the first invention]
According to the first aspect of the present invention, the width of the chaff sheave formed by the plurality of sorting plates, the pair of left and right chaff sheave mounting frames, and the pair of left and right support frames is formed so as to fit within the left and right side plates of the sheave case. To install the chaff sheave between the left and right side plates of the sheave case, the chaff sheave can be assembled simply by inserting the pre-assembled chaff sheave between the left and right side plates of the sheave case and fixing the chaff sheave mounting frames to the side plates. Compared to assembling components such as a sorting plate constituting the chaff sheave into the sheave case one by one, the chaff sheave can be efficiently attached to the sheave case.

  Also, an operating part for operating the chaff sheave support frame or sorting plate is attached to the operating tool, and the operating part is engaged with one of the support frame or sorting plate through the hole formed in the side plate of the sheave case from the outside of the sheave case. Therefore, the operating tool for changing the opening degree of the chaff sheave can be easily assembled from the outside of the sheave case to the chaff sheave attached to the sheave case.

[Effect of the first invention]
According to the first invention, the assembly of the chaff sheave to the sheave case can be efficiently performed.

[Configuration of the second invention]
The structure of the second invention is the structure of the first invention, wherein the support frame is fixed by fixing the operation tool to the side plate of the sheave case via a positioning fixing member so that the support frame is fixed. The opening degree is set.

[Operation and effect of the second invention]
According to the second invention, the operation tool is fixed by the positioning fixing member so that the position can be changed, so that the support frame is fixed and the opening degree of the chaff sheave is set. Thus, the operation can be continued in a state where the set predetermined opening is maintained, and good sorting can be performed.

[Configuration of the third invention]
According to a third aspect of the invention, in the first or second aspect of the invention, the operation portion is also used as one of the support shafts for rotatably attaching the sorting plate to the support frame.

[Operation and effect of the third invention]
According to the third invention, in the sorting plate to which the operation portion is attached, the operation portion is also used as a support shaft for rotatably attaching the sorting plate to the support frame. There is no need to provide a support shaft for attaching the support frame, the number of parts can be reduced, and productivity can be improved.

[Configuration of the fourth invention]
A structure of a fourth invention is the structure of the third invention, wherein a hole for holding the operation part is formed on one side of the lower part of the sorting plate, and the operation part is connected to the side plate from the outside of the side plate of the sheave case. The operating tool is fixed to the side plate of the sheave case or the operating tool fixing plate by the mounting member and the positioning fixing member through the support frame and the hole through the hole formed in .

[Effects of the fourth invention]
According to the fourth aspect of the present invention, the operation portion that is also used as a support shaft for attaching the support frame to the sorting plate is inserted from the outside of the side plate of the sheave case to the sorting plate of the chaff sheave stored between the left and right side plates. Since the operation tool is attached, the operation tool can be easily assembled.

It is a whole side view of a combine. It is a whole top view of a combine. It is a vertical side view of a threshing apparatus. It is a partially broken side view showing the fully opened state of the first chaff sheave. It is a partial longitudinal front view which shows the selection plate of the 1st chaff sheave, the operation member, and the left side wall of the threshing apparatus. It is a partially longitudinal front view which shows the left half part of the selection plate of a 1st chaff sheave. It is an assembly drawing of the first chaff sheave and the operation tool. It is a partially broken side view which shows the fully closed state of a 1st chaff sheave. It is a partially broken side view which shows the maximum opening state of a 2nd chaff sheave. It is a partially longitudinal front view which shows the selection plate of a 2nd chaff sheave and the operation tool for opening setting. It is a partially longitudinal front view which shows the left half part of the selection plate of a 2nd chaff sheave. It is an assembly drawing of a 2nd chaff sheave and an operation tool. It is a partially broken side view showing the minimum opening state of the second chaff sheave. It is a partially broken side view which shows the state which replaced with the 2nd chaff sheave and attached the Strollac to the sheave case.

  Based on FIG. 1, FIG. 2, the whole structure of a normal type combine is demonstrated. 1 and 2 show an overall side view and an overall plan view of the combine. As shown in FIGS. 1 and 2, an axial threshing device 3 and a crop recovery unit 4 are arranged in parallel on the left and right on the upper part of a traveling machine body 2 including a pair of left and right crawler traveling devices 1. A driving unit 5 is provided in front of the crop collection unit 4.

  At the front part of the threshing device 3, a feeder 6 for conveying the harvested crop is connected to the front end of the fulcrum X so as to be swingable up and down, and to the front end of the feeder 6 is connected a cutting unit 7 having a cutting width substantially corresponding to the horizontal width of the machine body. ing.

  The mowing unit 7 includes a clipper-type mowing device 9 provided over a pair of left and right weed frames 8 and an auger 10 installed over a pair of left and right weed frames 8. The crops harvested by the harvesting device 9 are configured to be fed laterally to the left and right central portions by the auger 10 and supplied to the feeder 6. The auger 10 is provided with a claw 12 and a screw 13 on the outer periphery of a drum-shaped auger body 11.

The feeder 6 is equipped with a scraping conveyor 14 so that the processing target crop supplied from the feeder 6 can be conveyed along the bottom surface of the feeder 6 and supplied to the threshing apparatus 3.
There are various kinds of crops to be processed that are harvested by ordinary combine, such as rice barley, straw, straw, beans, sesame, and rapeseed. Here, the crops to be processed are used to harvest rapeseed. Hereinafter, the rapeseed intended for harvesting is referred to as grain, and it is referred to as the stem part including the stem and the sheath that has wrapped the grain, and in some cases, the sheath and stem part may be divided.

  A hydraulic cylinder 16 is disposed across the front portion of the main deck 15 and the lower portion of the feeder 6 in the traveling machine body 2, and the cutting portion 7 and the feeder 6 are moved around the fulcrum X by extending and contracting the hydraulic cylinder 16. Can swing up and down.

  Above the front part of the mowing unit 7, a scraping reel 17 for scraping and raising the planted crop backward is provided. Left and right support arms 18 that can swing up and down around a fulcrum Y are pivotally connected to the rear ends of the left and right weed frames 8, and a take-up reel 17 is attached to a front bracket of the support arm 18. It is pivotally connected via.

  A hydraulic cylinder 20 is disposed between the weeding frame 8 and the support arm 18, and the support arm 18 is swung up and down by the hydraulic cylinder 20 to change the height of the operation of the take-up reel 17. In addition, the support bracket 19 can be slid along the support arm 18 to adjust the scraping action position back and forth.

  As shown in FIG. 3, the threshing apparatus 3 has a handling cylinder 23 that rotates around a handling cylinder shaft 22 that is installed in the handling chamber 21 formed in the upper part thereof along the conveying direction of the harvested crop to be processed. And a lower end of the threshing device 3 in the threshing processing direction, and a receiving net 24 formed in a U-shape in front view covering the lower side of the handling barrel 23 from below. A dust feeding port 25 is formed behind the receiving net 24, and a sorting unit 26 is provided below the receiving net 24. In the sorting unit 26, a swing sorting mechanism 28 having a sheave case 27 is disposed immediately below the receiving net 24, and a red pepper 29 is disposed in front of and below the swing sorting mechanism 28. The first collecting part 30 is formed below the part side, the second collecting part 31 is formed below the rear side of the swing sorting mechanism 28, and the dust discharge port 32 is formed behind the swing sorting mechanism 28. A top plate 33 is provided to cover the upper side of 23 from above.

  The handling chamber 21 is partitioned and formed by a receiving net 24 covering the handling cylinder 23, a top plate 33, and the like. A supply port 34 is formed at a lower part of the front end, and the rear end of the feeder 6 is connected to the supply port 34. The whole crop to be cut and conveyed by the feeder 6 is supplied and supplied from the supply port 34 as a threshing processed product.

  The handling cylinder 23 is motive power from an engine (not shown) transmitted through a carp 29 and the like so that the handling cylinder shaft 22 is rotatably installed over the front wall 35 and the rear wall 36 of the threshing device 3. By being driven to rotate clockwise when viewed from the front with the barrel 22 as a fulcrum, the threshing process is performed on the processing target crop supplied to the handling chamber 21 to promote the threshing of the grain while threshing. The processed product is conveyed toward the rear, which is the lower side in the threshing processing direction.

  The receiving net 24 is a concave receiving net formed in a lattice shape, receives the stem portion of the processing target crop supplied to the handling chamber 21, and obtains a single grain or a sheathed grain obtained by the threshing process, Alternatively, the processing waste of the pods and stems generated by the threshing process is caused to leak toward the lower swing sorting mechanism 28, while the stem is prevented from leaking to the swing sorting mechanism 28. The mesh of the receiving net 24 is smaller than that of rice. When the rice is threshed, it is replaced with a receiving net for rice.

  The handling cylinder 23 includes a frustoconical scoring portion 37 provided at a front end portion thereof, and a handling processing portion 38 connected to a rear end of the scrambling portion 37. On the outer peripheral surface of the scraping unit 37, two spiral teeth 39 are integrated to scrape and convey the harvested cereal supplied from the supply port 34 toward the rear handling unit 38 when the handling cylinder 23 rotates. Equipped.

  The handling section 38 includes a front support member 40 made of a plate connected to the front portion of the handling cylinder shaft 22, an intermediate support member 41 made of an annular hollow plate disposed at the front and rear intermediate parts of the handling cylinder 23, A rear support member 42 made of a plate connected to the rear end portion of the handle barrel shaft 22 is provided, and these support members 40 to 42 are arranged in the circumferential direction of the handle barrel 23 in a front-to-back orientation along the handle barrel shaft 22. Six handling cylinder frames 43 made of round pipe steel or the like supported so as to be arranged at regular intervals, and each handling cylinder frame 43 from the handling cylinder frame 43 toward the outer side in the radial direction of the handling cylinder 23. It is formed in a bowl shape by a plurality of teeth 44 and the like that are provided so as to protrude and are arranged at predetermined intervals in the front-rear direction.

  In other words, the handling cylinder 23 is arranged and arranged such that a plurality of handling teeth 44 projecting outward from the handling cylinder 23 are arranged at intervals in the circumferential direction and the front-rear direction of the handling processing unit 38. The internal space S of 38 communicates with the handling chamber 21 and allows the threshing processed material to enter the internal space S.

  As shown in FIG. 3, threshing wastes such as large stems and sheaths discharged from the dust feed port 25 at the rear end of the handling chamber 21 and threshing wastes discharged from the rear end of the sorting unit 26 are discharged. The chopper 47 as a shredding device provided with a rotary blade 45 and a fixed blade 46 disposed at the rear of the dust port 32 is configured to be shredded.

  The sheave case 27 is locked and guided through left and right rollers 50 so that the front and right sides of the sheave case 27 are fixed to the inner surfaces of the left and right side walls 48 of the sorting unit 26 and are inclined downward. In addition, the rear portion of the sheave case 27 is detachably connected to an eccentric rotation mechanism 51 that is horizontally mounted between the left and right side walls. When the eccentric rotation mechanism 51 is eccentrically rotated, the front portion of the sheave case 27 is linearly reciprocated in the diagonally forward and backward directions, and the rear portion of the sheave case 27 is circularly rotated and operated vertically. It is comprised so that the back feed function and sieve selection function of the threshing processed material which were mounted may be exhibited.

  From the rear end of the guide rail 49 to the rear part of the threshing device, an insertion / extraction rail (not shown) for placing and rolling the roller 50 is continuously provided. The roller 50 of the sheave case 27 whose connection has been released is guided by the insertion / extraction rail and guided rearward, and the sheave case 27 can be extracted rearward from the dust outlet 32.

  The Karan 29 is driven to rotate by the power from the engine 2 transmitted through a belt-type transmission mechanism (not shown) to generate a sorting wind, and the sorting wind has three air paths R1 to R1. By passing through R3 and being supplied to the sorting processed material leaked from the receiving network 24 or the sorting processed material sorted by the swing sorting mechanism 28, the sorting processing product is subjected to wind sorting processing. Then, swarf and the like having a small specific gravity are blown out from the sorted processed material and conveyed toward the dust outlet 32 on the lower side in the threshing processing direction.

  As shown in FIG. 3, of the selected air from the tang 29, the selected air passing through the upper air passage R1 passes through the air passage R4 formed in the sheave case 27 to the intermediate support member 41 of the handling cylinder 23. It comes to flow toward. Thereby, the threshing processed product that is prevented from flowing toward the lower side of the threshing processing direction by the intermediate support member 41 can be wind-winded toward the periphery of the handling cylinder 23, and as a result, the threshing processed product is transferred to the intermediate support member 41. It is possible to avoid the possibility that the threshing process will be hindered by depositing at a location immediately before.

  The first item collected by the first collecting unit 30 is conveyed by the lateral feed screw 53 and carried out of the apparatus, and then sent to the grain collecting unit 4 by the lifting device 54 comprising a screw conveyor and collected. The second product is transported by the lateral feed screw 55 and carried out of the apparatus, and then transported by the screw type reducing device 56 and supplied to the front portion of the sheave case 27 for re-sorting. ing.

  At the front part of the sheave case 27 is a corrugated front grain pan 57 for swinging and transferring the threshing product and the reduced second product leaked from the front part of the receiving net 24, and the end of the front grain pan 57. First, the sieved wire 58, the treated product reaching the rear end of the sieve line 58, and the threshing treated product leaked from the front and rear intermediate portions of the receiving net 24 are screened while swinging and moving backward. Drops from the chaff sheave 59, the sieve line 58, and the sorting process product that has passed through the first chaff sheave 59, the fine pan 60 and the grain sheave 61 for sorting, and the sorting process product that has reached the end of the first chaff sheave 59 and the receiving net 24. A second chaff sheave 62 and the like are provided to feed the processed waste remaining after sieving and sorting to the dust discharge port 32 while swinging and transferring the threshing processed product thus moved backward.

  The front grain pan 57 performs so-called specific gravity difference sorting, in which the processed product is divided into layers according to the specific gravity difference during the rocking transfer. A processed product having a small specific gravity is divided into upper layers and sent to the next sieving line 58.

  When the processed product sorted into the upper and lower two layers by the front grain pan 57 moves on the sieve line 58, the lower rapeseed (grain) is immediately dropped and supplied to the grain pan 60 and the grain sieve 61, and falls from the sieve line 58. The upper processing waste that has not been processed and the grains mixed in the processing waste are delivered to the first chaff sheave 59.

  The structure for adjusting the opening degree of the first chaff sheave 59 is configured as follows. As shown in FIG. 3, the first chaff sheave 59 is provided substantially horizontally in the front-rear direction, and is configured by arranging a large number of sorting plates 63 in parallel in the front-rear direction at a predetermined interval.

  As shown in FIGS. 4 and 5, the sorting plate 63 includes a sorting plate 63 </ b> A at the center in the front-rear direction connected to the operation tool 68 and other sorting plates 63 </ b> B at the front and rear. The central sorting plate 63A includes a plate material 63b formed with a bending rib 63a that also serves as a reinforcement for receiving the sorting processed product flowing down to the lower end, a support shaft 67 made of a round bar fixed to the upper end of the plate 63b, An operation shaft 65 (corresponding to an operation portion) that also serves as a support shaft that can be inserted and removed is disposed on the left and right of the lower end portion of the plate material 63b, and is disposed on the left and right of the plate material 63b to fix the support shaft 67 and rotate the operation shaft 65. The holding plate 63c is freely held.

  As shown in FIGS. 4 and 6, the front and rear sorting plates 63B are formed at the left and right end portions of the plate material 63b formed with bending ribs 63a that also serve as a reinforcement for receiving the sorting processed material flowing down to the lower end portion. It has an upper support shaft 67a and a lower support shaft 65a formed by a U-shaped round bar arranged, and a holding plate 63g for holding the support shaft. The support shafts 65a and 67a are fixed between a plate material 63b and a holding plate 63g. The upper edge of the sorting plate 63B is formed in a waveform over substantially the entire width, and the upper and lower intermediate portions are formed with reinforcing ribs 63d bulging forward substantially over the entire width. The upper surface 63e of the bending rib 63a and the upper end surface 63e of the reinforcing rib 63d receive the sorted processed product once when the sorted processed product has flowed down the sorting plate 63B, receive the oscillating wind sorting, and light sheaths and foliage. Since the wind is sorted, it has a function as a reinforcing material and a function of improving sorting accuracy.

  The sorting plate 63, the support frame 64, and the chaff sheave mounting frame 89 are inserted into the holes formed in the chaff sheave mounting frame 89 through the respective support shafts 67, 67a, and the split pin 90 is fixed to the support shaft 67a. 89, the operating shaft 65 and the support shaft 65a are inserted into the holes of the support frame 64, and the split pin 91 is fixed to the support shaft 65a to prevent the support frame 64 from being removed, so that the first chaff sheave 59 is assembled (hereinafter abbreviated as the first chaff unit). The left and right widths of the first chaff unit are shorter than the width between the left and right side plates 27a and 27a of the sheave case 27, and the first chaff unit is formed in a dimension that fits between the left and right side plates 27a and 27a.

  Holes 92 are formed in a plurality of locations of the chaff sheave mounting frame 89, and nuts 93 are fixed around the holes 92 inside the chaff sheave mounting frame 89 as shown in FIGS. With the first chaff unit positioned between the left and right side plates 27a, 27a, a bolt 95 is threaded into the nut 93 through the hole 94 formed in the side plate 27a of the sheave case 27, and the first chaff unit is sheaveed. Fix to case 27.

  The sorting plates 63A and 63B attached to the sheave case 27 change the angles of the plurality of sorting plates 63A and 63B in conjunction with the movement of the support frame 64 forward or backward. That is, when the support frame 64 is moved forward, the angles of the respective sorting plates 63A and 63B are loosened and the opening of the first chaff sheave 59 is reduced. Conversely, when the support frame 64 is moved rearward, each sorting plate 63A. , 63B becomes tight, and the opening of the first chaff sheave 59 increases.

  The central sorting plate 63 </ b> A is linked to an operation tool 68 that changes the opening degree of the first chaff sheave 59. That is, as shown in FIG. 7, an operation shaft 65 that also serves as the support shaft is fixed to the operation tool 68. The operation shaft 65 is inserted into a hole 63f formed in the lower left portion of the central sorting plate 63A through an arc-shaped long hole 66 formed in the left side plate 27a of the sheave case 27. The support shaft 67 at the upper end portion of the central sorting plate 63A is only supported by the chaff sheave mounting frame 89, and the support shaft 67 is not attached to the operation tool 68, and is concentrically with the hole 96 and the left side plate 27a. It is supported by. That is, a hole 96 is formed in the left side plate 27a of the sheave case 27. As shown in FIGS. 5 and 7, the shaft center around the hole 96 inside the left side plate 27a is aligned with the axis a of the support shaft 67. The nut 97 is fixed in a state of matching or substantially matching. A distance equal to or substantially equal to the distance between the axis c of the operation shaft 65 and the axis a of the support shaft 67 in a state where the operation shaft 65 is inserted into the hole 63f is spaced upward from the axis c of the operation shaft 65. A hole 98 is formed at the upper position of the operating tool 68, and a hooked ring 99 is fitted into the hole 98, and the bolt 101 is screwed into the nut 97 through the ring hole 100 to attach the operating tool 68. The hole 98 provided in the upper part of the operation tool 68 is formed larger than the outer diameter of the hooked ring 99 fitted to the operation tool 68, whereby the operation shaft 65 is inserted into the hole 63f of the sorting plate 63A and the nut. The manufacturing / mounting error when the bolt 101 is inserted into 97 is allowed.

  The operating tool 68 fixes a nut 69a to an inner portion of a circular hole 69 formed in a plurality (five) of operating positions on the left side plate 27a of the sheave case 27, and one of them is a positioning fixing member. The bolt 70 is screwed and fixed so that the position can be maintained, and the opening degree of the first chaff sheave 59 is decreased as the operating tool 68 is swung forward. Conversely, as the operating tool 68 is swung rearward, the opening degree of the first chaff sheave 59 is increased.

  The operation tool 68 is formed in a wide rectangular shape, and an arc-shaped long hole 66 penetrating the operation shaft 65 fitted to the lower left end portion of the center sorting plate 63A is provided in the entire range of attachment positions of the operation tool 68. In this state, that is, even if the operation tool 68 is fixed at any of the five positions, the whole is closed by the plate surface of the operation tool 68. That is, the operating tool 68 also serves as a cover member for the long hole 66.

  As shown in FIGS. 1, 5, and 6, an opening 71 is formed in the left side wall 48 of the selection unit 26 at a position corresponding to the outer side of the operation tool 68, and the opening 71 is detachable. It is closed with an opening / closing lid 72. When changing the opening degree of the first chaff sheave 59, the opening degree of the first chaff sheave 59 is changed by removing the opening / closing lid 72 and changing the position of the hole 69 to which the operation tool 68 is rocked and fixed. To change.

  The second chaff sheave 62 is configured as follows. As shown in FIG. 3, the second chaff sheave 62 is provided from the upper side of the second collection portion 31 in the sheave case 27 to the rear end portion of the sheave case 27 so as to rise rearward at the rear portion higher than the front portion. In the second chaff sheave 62, a plurality of sorting plates 73 are arranged in parallel at a predetermined pitch.

  As shown in FIGS. 9 and 10, the sorting plate 73 includes a sorting plate 73A connected to an opening setting operation tool 75, and other sorting plates 73B before and after this. The sorting plate 73A includes a plate member 73b formed with a bending rib 73a that also serves as a reinforcement for catching a sorting processed product flowing down to the lower end portion, a support shaft 80 made of a round bar fixed to the upper end portion of the plate member 73b, and a plate member 73b. An operation shaft 81 (corresponding to an operation portion) that also serves as a support shaft that can be inserted and removed is provided on the left and right sides of the lower end of the plate, and is disposed on the left and right of the plate member 73b. And a holding plate 73c to be held.

  As shown in FIG. 9 and FIG. 11, the front and rear sorting plates 73B are formed at the left and right end portions of the plate material 73b formed with bending ribs 73a that also serve as a reinforcement for receiving the sorting processed material flowing down to the lower end portion. It has an upper support shaft 80a and a lower support shaft 81a formed by U-shaped round bars arranged, and a holding plate 73g for holding the support shaft. The support shafts 80a and 81a are fixed between the plate material 63b and the holding plate 73g. The upper edge of the sorting plate 73B is formed in a waveform over substantially the entire width, and the upper and lower intermediate portions are formed with reinforcing ribs 73d bulging forward substantially over the entire width. The upper surface 73e of the bending rib 73a and the upper end surface 73e of the reinforcing rib 73d receive the sorted processed product once when the sorted processed product has flowed down the sorting plate 73B, receive the oscillating wind sorting, and light sheaths and foliage Since the wind is sorted, it has a function as a reinforcing material and a function of improving sorting accuracy.

  The sorting plate 73, the support frame 74, and the chaff sheave mounting frame 86 are inserted into the holes formed in the chaff sheave mounting frame 86 through the support shafts 80, 80 a, and the split pin 90 a is fixed to the support shaft 80 a. 86, the operating shaft 81 and the support shaft 81a are inserted into the holes of the support frame 74, and the split pin 91a is fixed to the support shaft 81a to prevent the support frame 74 from falling off, so that the second chaff sheave 62 is assembled (hereinafter abbreviated as the second chaff unit). The left and right widths of the second chaff unit are shorter than the width between the left and right side plates 27a and 27a of the sheave case 27, and the second chaff unit is formed in a size that fits between the left and right side plates 27a and 27a.

  Holes 92a are formed in a plurality of locations of the chaff sheave mounting frame 86, and nuts 93a are fixed around the holes 92a inside the chaff sheave mounting frame 86 as shown in FIGS. With the second chaff unit positioned between the left and right side plates 27a, 27a, the bolt 87 is threaded into the nut 93a through the hole 94a formed in the side plate 27a of the sheave case 27 and the second chaff unit is sheaveed. Fix to case 27.

  When the sorting plates 73A and 73B attached to the sheave case 27 are moved to the front or rear of the support frame 74, the angles of the plurality of sorting plates 73A and 73B are changed in conjunction therewith. That is, when the support frame 74 is moved forward, the angles of the respective sorting plates 73A and 73B are loosened, and the opening of the second chaff sheave 62 is reduced. Conversely, when the support frame 74 is moved rearward, each sorting plate 73A. , 73B becomes tight, and the opening degree of the second chaff sheave 62 increases.

  The central sorting plate 73A is linked to an operating tool 75 that changes the opening degree of the second chaff sheave 62. That is, as shown in FIG. 12, an operating shaft 81 that also serves as the support shaft is fixed to the operating tool 75. The operation shaft 81 is inserted into a hole 73f formed in the lower left portion of the central sorting plate 73A through an arc-shaped long hole 82 formed in the left side plate 27a of the sheave case 27. The support shaft 80 at the upper end of the center sorting plate 73A is only supported by the chaff sheave mounting frame 86, and the support shaft 80 is not attached to the operation tool 75, and is concentrically with the hole 96a. It is supported by. That is, a hole 96a is formed in the left side plate 27a of the sheave case 27, and as shown in FIGS. 10 and 12, the shaft center is formed around the hole 96a inside the left side plate 27a and the axis b of the support shaft 80. The nut 97a is fixed in a state of matching or substantially matching. A distance equal to or substantially equal to the distance between the axis d of the operation shaft 81 and the axis b of the support shaft 67 in a state where the operation shaft 81 is inserted into the hole 73f is spaced upward from the axis d of the operation shaft 81. A hole 98a is formed in the upper position of the operating tool 75, and a hooked ring 99a is fitted into the hole 98a, and the bolt 101a is screwed into the nut 97a through the ring hole 100a to attach the operating tool 75. The hole 98a provided in the upper part of the operation tool 75 is formed to be larger than the outer diameter of the hooked ring 99a fitted to the operation tool 75, whereby the operation shaft 81 is inserted into the hole 73f of the sorting plate 73A and the nut. The manufacturing / mounting error when the bolt 101a is inserted into the pin 97a is allowed.

  The support shafts 80, 80 a at the upper end portions of the plurality of sorting plates 73 are pivotally attached to the left and right chaff sheave mounting frames 86, and the operation shaft 81 at the lower end portion of the sorting plate 73 is connected to the support frame 74 to be connected to the second chaff sheave 62. The left and right chaff sheave mounting frames 86 are fixed to the left and right side plates 27a of the sheave case 27 with bolts 87, whereby the support shafts 80 and 80a are attached to the side plates 27a of the sheave case 27 via the chaff sheave mounting frame 86. It is installed.

  At the lower ends of the left and right side plates 27a at the rear of the sheave case 27, a bottom plate 76 is provided for allowing the second item selected by the second chaff sheave 62 to flow down to the second collecting portion. An operating tool fixing plate 77 having an inverted L-shaped cross section along the side plate 27a is fixed to the bottom plate 76 below the rear portion of the left side plate 27a of the sheave case 27. On the operation tool fixing plate 77, nuts 79 for fixing the operation tool 75 for setting the opening degree with bolts 78 at a pitch of 15 degrees are respectively fixed inside the three holes 79a for bolt insertion. . An engagement hole 83 for positioning and fixing the operation tool 75 through the bolt 78 is formed at the free end of the operation tool 75. When the operation tool 75 is operated forward, the opening degree of the second chaff sheave 62 is changed in a direction that decreases. Conversely, when the operation tool 75 is operated backward, the opening degree of the second chaff sheave 62 is changed. The

  The arc-shaped long hole 82 that penetrates the operating shaft 81 fitted to the lower left end of the central sorting plate 73A is in the state where the operating tool 75 is attached to the entire range. Even if it is fixed at this position, the whole is closed by the plate surface of the operation tool 75. That is, the operation tool 75 also serves as a cover member for the long hole 82.

  The opening setting operation tool 75 extends obliquely downward toward the dust outlet 32 located at the rear end of the threshing device 3 on the free end side, and on the left outer wall side of the threshing device 3, It is located near the dust exhaust port 32 that can be reached from the dust port 32. The operation tool 75 is operated from the rear left side of the dust outlet 32 of the threshing device 3.

  The chopper 47 is attached so that the dust outlet 32 can be opened by swinging the left and right lateral sides of the body around the vertical axis Q of the vertical axis provided between the rear wall 36 of the threshing device 3. 47 is closed and fixed with a fixing bracket (not shown).

The second chaff sheave 62 removes the fixture of the chopper 47, opens the chopper 47 around the longitudinal axis Q and opens the dust outlet 32, and the operator fixes the operation tool 75 from the dust outlet 32. The opening degree is changed by removing the bolt 78 and operating the operating tool 75 and screwing the bolt 78 with another nut 79.
When removing the second chaff sheave 62, the chopper 47 can be opened widely, the eccentric rotation mechanism 51 can be disconnected, the sheave case 27 can be pulled out rearward, and then the bolt 87 can be removed. Then, by changing to chaff sheaves or strollers with different scales, it is possible to cope with the harvesting of different types of crops.

  The support shafts 67 and 80 at the upper ends of the plurality of sorting plates 63 and 73 of the first chaff sheave 59 and the second chaff sheave 62 and the operation shafts 65 and 81 are respectively connected to the left and right chaff sheave mounting frames 89 and the support frames 64 and the chaff sheave. The first chaff sheave 59 and the second chaff sheave 62 are unitized by pivoting to the mounting frame 86 and the support frame 74, and the left and right chaff sheave mounting frames 89 and 86 are respectively attached to the left and right side plates 27a of the sheave case 27 by bolts 95 and 87. The support shafts 67 and 80 are detachably attached to the side plate 27a of the sheave case 27 via the chaff sheave attachment frames 89 and 86.

  In addition, rubber humps 102 are provided at the upper ends of the left and right side plates 27a of the sheave case 27 in order to prevent the processed product from falling between the side plate 27a of the sheave case 27 and the side plate 48 of the sorting unit 26. Are fixed with bolts 103. The rear end bolt 103 to which the hump 102 is attached also serves as a rear end bolt 87 for attaching the chaff sheave attachment frame 86 of the second chaff sheave 62.

[Another embodiment]
(1) In the above embodiment, the lower end is swung around the horizontal axes a and b of the upper ends of the sorting plates 63 and 73 of the first and second chaff sheaves 59 and 62. The centers a and b and the support frames 64 and 74 are turned upside down, and are supported so as to be swingable around the horizontal axis of the lower ends of the plurality of sorting plates 63 and 73, and the upper ends of the plurality of sorting plates 63 and 73 are supported. Connected to the support frames 64 and 74 that are long in the front-rear direction, the angles of the plurality of sorting plates 63 and 73 are changed in conjunction with the back-and-forth movement of the support frames 64 and 74, and the opening degree of the first chaff sheave 59 or the second chaff sheave 62 is increased. You may comprise so that it may be set.

  (2) In the above-described embodiment and (1), the positioning fixing members (nuts 69a, 79) for fixing the operation tools 68, 75 to the side plate 27a of the sheave case 27 are used as the sorting plates 63, 73. It may be provided on the upper side.

  (3) The operating shafts 65 and 81 of the first chaff sheave 59 and the second chaff sheave 62 are placed at a position different from the position where the sorting plates 63 and 73 are operated, for example, at the front end portion or the rear end portion of the support frames 64 and 74. It may be provided.

  (4) In the above embodiment, the first and second chaff sheaves 59 and 62 are provided so that the angle of the entire sorting plates 63 and 73 can be changed, and the entire sorting plate 63 or 73 is detachably attached. However, a part of the sorting plates 63 and 73 may be fixed to the sheave case 27 so that the opening degree cannot be changed.

  (5) In the above embodiment, the first chaff sheave 59 and the second chaff sheave 62 are configured to be attached to the sheave case 27 as a unit. Depending on the type of crop to be used, it can be exchanged for a chaff sheave with different specifications. Further, the second chaff sheave 62 may be configured to be replaceable with the Strollac 104 as shown in FIG. 14 instead of the second chaff sheave 62 when harvesting rice wheat. The Strollac 104 is provided with a plurality of rack plates 106 arranged in parallel in the left-right direction on a substrate 105 extending over the entire width of the sheave case 27, and fixed to the left and right side plates 27 a via the brackets 107 with bolts 87. The Strollac 104 can be removed by removing the left and right bolts 87.

  (6) The first chaff sheave 59 and the second chaff sheave 62 may be integrated into one chaff sheave. In this case, a partly fixed sorting plate may be provided.

  The present invention can be applied not only to rapeseed but also to a combine threshing apparatus for harvesting sesame and beans.

3 Threshing device 21 Handling room 26 Sorting part 27 Sheave case 27a Side plate 59 Chaff sheave (first chaff sheave)
62 chaff sheave (second chaff sheave)
63, 73 Sorting plate 64, 74 Support frame 65, 81 Operation part (operation shaft)
66,82 holes (long holes)
68,75 Operation tool 70,78 Positioning fixing member (bolt)
86, 89 Chaff sheave mounting frame 101, 101a Mounting member (bolt)
a, b Horizontal axis

Claims (4)

In the sorting part located below the handling room of the threshing device, a sheave case provided with a chaff sheave for sorting the threshing processed product is provided so as to be swingable back and forth,
A pair of left and right chaff sheave mounting frames, each of which has a plurality of sorting plates and a plurality of sorting plates arranged in parallel at a predetermined interval in the front-rear direction, and each of the sorting plates is rotatably mounted around a horizontal axis. And a pair of left and right support frames that are rotatably mounted across the respective sorting plates,
While fixing the pair of left and right chaff sheave mounting frames to the left and right side plates of the sheave case, the angle of the plurality of sorting plates is changed by moving the support frame back and forth with respect to the sheave case. In the chaff sheave structure in the combine that is configured to change the opening,
The left and right widths of the chaff sheave comprising the plurality of sorting plates, the pair of left and right chaff sheave mounting frames and the pair of left and right support frames are formed to fit within the left and right side plates of the sheave case, and the pair of left and right chaff sheaves The mounting frame is configured to be attachable to the left and right side plates of the sheave case,
An attachment member is provided on the left and right side plates of the sheave case to attach the operation tool so as to be rotatable about an axis parallel to the horizontal axis, and an operation unit for operating the support frame is attached to the operation tool. A hole that allows the position change of the operation portion is formed in the left and right side plates of the case, and the operation portion is engaged with the support frame or the sorting plate through the hole from the outside of the sheave case, and An operation tool is attached to one of the left and right side plates of the sheave case via the attachment member.   The operation tool is fixed to a side plate of the sheave case via a positioning fixing member so that the position of the operation tool can be changed, whereby the support frame is fixed and the opening degree of the chaff sheave is set. A chaff sheave structure in a combine according to Item 1.   3. A chaff sheave structure in a combine according to claim 1 or 2, wherein the operation portion is also used as one of support shafts for rotatably attaching the sorting plate to the support frame.   A hole for holding the operation part is formed on one side of the lower part of the sorting plate, and the operation part is formed from the outside of the side plate of the sheave case through the hole formed in the side plate. The chaff sheave structure in a combine according to claim 3, wherein the operation tool is fixed to a side plate of the sheave case by the mounting member and a positioning fixing member while being inserted into the hole.

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