JP2017046608A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester capable of softly changing the ratio, at which a re-selection is performed according to the kind of a crop or a harvest target.SOLUTION: A combine-harvester comprises: a threshing part for threshing the crop; and a selecting part 24 for performing a selection treatment while transferring a processed product to be threshed. The selecting part 24 includes a first selecting part 61 for selecting the processed product coarsely, and a second selecting part 54 positioned below the first selecting part 61 for selecting the processed product finely. Further comprised are: a first recovery part 50 positioned below the second selecting part 54 for recovering to store the product selected; a second recovery part 51 positioned on the downstream side of the first recovery part 50 in the transportation direction of the selecting part, for re-selecting the product to be selected; a guide part 58 positioned below the second selecting part 54 and formed in a shape inclined down forward, for flowing down and guiding the selected processed part having passed through the second selecting part 54 toward the first recovery part 50; and an adjustment mechanism 100 capable of adjusting the size of a clearance S between the transportation terminal end of the second selecting part 54 and the rear upper end part of the guide part 58.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a combine provided with a threshing unit for threshing a crop and a selection unit for performing a selection process while conveying a threshing product.

  A conventional combine is described in Patent Document 1, for example. In this combine, the sorting unit has a first sorting unit (roughly “chaff sheave” in this document) for roughly sorting the threshing product, and a second sorting that is located below the first sorting unit and finely sorts the threshing product. (In the same document, “Glensieve”). In addition, the combine is located below the second sorting unit, and in the transport direction of the sorting unit, a first collecting unit ("No. 1 collecting unit" in the same document) that collects the sorting processed product for storage. A second recovery unit (in the same document, “No. 2 recovery unit”) that is positioned on the lower side of the first recovery unit and recovers the sorted processed material for re-sorting, and is positioned below the second selection unit And a guide portion that is formed in a forwardly inclined shape and guides the sorted processed product that has passed through the second sorting portion toward the first recovery portion.

JP 2014-33654 A

By the way, there are various types of crops to be harvested, and crops that can be re-sorted actively to reduce the threshing loss of crop grains, and dirt on the surface of crop grains, for example, There are some crops where it is desirable not to re-sort too much because they want to reduce as much as possible.
However, in the conventional technique, the ratio of re-sorting is determined to some extent, and the ratio of re-sorting cannot be flexibly changed according to the type of crop to be harvested.

  In view of such circumstances, it has been desired to provide a combine that can flexibly change the proportion of re-sorting according to the type of crop to be harvested.

The combine of the present invention is
A threshing section for threshing crops;
A sorting section that performs sorting processing while conveying the threshing product,
The sorting unit is provided with a first sorting unit for roughly sorting the threshing processed product, and a second sorting unit positioned under the first sorting unit for finely sorting the threshing processed product,
A first recovery unit that is located below the second selection unit and collects the processed material for storage;
A second recovery unit that is located on the lower side of the first recovery unit in the transport direction of the selection unit, and that recovers the processed material for re-sorting;
A guide unit that is positioned below the second sorting unit and is formed in a slanted shape with a front lowering, and guides the sorting processed product that has passed through the second sorting unit to the first recovery unit;
And an adjusting mechanism capable of adjusting the size of the gap between the conveyance terminal portion of the second sorting portion and the rear upper end portion of the guide portion.

According to the present invention, the threshing processed product conveyed from the threshing unit to the sorting unit is sorted by the second sorting unit located below the first sorting unit and the first sorting unit, and the second sorting unit is arranged in the sorting unit. Sorted processed products other than the discharged products out of the sorted processed products that are not leaked are guided to the guide unit and collected and stored in the first collecting unit located below the second sorting unit, or stored in the sorting unit. Either the second collection unit located on the lower side of the first collection unit in the transport direction is collected and re-sorted.
Here, an adjustment mechanism is provided that can adjust the size of the gap formed between the conveyance terminal portion of the second sorting portion and the rear upper end portion of the guide portion. By enlarging the gap by the adjustment mechanism, the sorted product is more likely to flow from the conveyance end of the second sorting unit to the first collection unit, and is less likely to flow to the second collection product, thereby reducing the re-sorting rate. . On the other hand, by reducing the gap with the adjustment mechanism, the sorted product is less likely to flow from the conveyance end of the second sorting unit to the first collecting unit, and more easily flows to the second collecting unit, thereby increasing the re-sorting rate. To do.
Therefore, according to the present invention, it is possible to flexibly change the ratio of re-sorting according to the type of crop to be harvested by simply performing the operation of adjusting the size of the gap with the adjustment mechanism.

In the above configuration,
It is preferable that the adjustment mechanism is provided with a plate-like upper adjustment member supported by the conveyance terminal portion of the second sorting unit.

  According to this configuration, it is possible to extend the transport distance of the sorting processed product in the second sorting unit by the upper adjustment member.

In the above configuration,
The first sorting unit is provided with a chaff sheave having a plurality of chi-flips arranged along the transport direction,
The upper adjustment member includes a shortened state in which the rear end portion of the upper adjustment member is positioned on the upper side in the transport direction with respect to the last chaff flip of the transport end portion of the chaff sheave, and the rear end portion of the upper adjustment member is It is preferable that the state can be changed to an extended state located on the lower side in the transport direction with respect to the last tail flip.

  According to this configuration, when the upper adjustment member is in the shortened state, the sorting processed product falling from the vicinity of the last chaff flip of the chaff sheave in the first sorting unit is less likely to hit the upper adjustment member, and the first collecting unit It becomes easy to flow and the ratio which performs re-sorting can be reduced. On the other hand, when the upper adjustment member is in the extended state, the sorting processed product falling from the vicinity of the last chaff flip of the chaff sheave in the first sorting unit is likely to hit the upper adjustment member, and is moved to the second collection unit by the upper adjustment member. And the rate of re-sorting can be increased.

In the above configuration,
The second sorting part is provided with a perforated area part, and a non-porous area part provided on the rear end side of the perforated area part,
It is preferable that the upper adjustment member is supported by the non-hole region portion so as to be slidable along the transport direction.

  According to this configuration, since the upper adjustment member is slidable in the non-porous region portion, the upper adjustment member does not hinder the leakage of the sorting processed product in the perforated region portion, and the sorting in the second sorting portion. A reduction in efficiency can be avoided.

In the above configuration,
The second sorting unit is preferably detachable from the side of the sorting unit.

  According to this configuration, since the second sorting unit can be detached from the side of the sorting unit alone, for example, compared to the case where the entire sorting unit has to be detached, the maintenance work for the second sorting unit Is easier to do.

In the above configuration,
It is preferable that the adjustment mechanism is provided with a plate-like lower adjustment member supported on the rear upper end portion of the guide portion.

  According to this structure, it becomes possible to increase the ratio of the sorting processed product guided to the first recovery unit by the guide member by the lower adjustment member.

In the above configuration,
The lower adjustment member is preferably changeable to a state in which the rear end portion of the lower adjustment member is located above the upper end portion of the conveyance terminal portion of the second sorting unit.

  According to this configuration, the lower adjustment member is placed in a state in which the rear end portion of the lower adjustment member is located above the upper end portion of the conveyance termination portion of the second sorting portion, thereby conveying the second sorting portion. Most of the sorting processed product conveyed to the end portion hits the lower adjustment member, is guided by the guide member, and flows to the first recovery unit. As a result, it becomes difficult for the sorted product to flow into the second collection unit, and the re-sorting rate can be reduced.

In the above configuration,
It is preferable that the lower adjustment member can be changed in a state in which a rear end portion of the lower adjustment member is located behind a conveyance end portion of the first selection unit.

  According to this configuration, by setting the lower adjustment member in a state in which the rear end portion of the lower adjustment member is located behind the conveyance termination portion of the first sorting portion, The fallen sorting processed product is received by the lower adjustment member and guided to the guide member, and easily flows to the first recovery unit. As a result, it becomes difficult for the sorted product to flow into the second collection unit, and the re-sorting rate can be reduced.

In the above configuration,
The lower adjustment member is preferably supported by the guide portion so as to be slidable along the extending direction of the guide portion.

  According to this configuration, since the lower adjustment member can be slid along the extending direction of the guide portion that guides the sorting processed product toward the first recovery portion, the lower adjustment member is moved along the inclination of the guide portion. You can leave and exit.

In the above configuration,
A lower sorting side than the first sorting unit in the transport direction is provided with a third sorting unit that further sorts the sorting processed product that has passed through the first sorting unit,
It is preferable that the lower adjustment member is able to enter between a conveyance end portion of the second sorting unit and a conveyance start end portion of the third sorting unit.

  According to this configuration, the sorting processed product that falls from the conveyance end of the second sorting unit and heads toward the conveyance start end of the third sorting unit is received by the lower adjustment member and guided to the guide member, It becomes easy to flow to the 1st recovery part.

In the above configuration,
On the upper side in the transport direction than the first sorting unit, a Glen pan is provided,
A wavy portion that performs a feeding action to the lower side in the transport direction with respect to the threshing processed product is provided at the upper side position in the transport direction of the Glen pan,
It is preferable that a flat portion is provided in the lower side of the grain pan in the transport direction.

  According to this configuration, the threshing processed product is sent to the lower side in the conveying direction of the sorting unit by the wavy portion of the Glen pan, and the threshing processed product is conveyed toward the first selecting unit while being diffused in the flat portion of the Glen pan. Thereby, it is avoided that the threshing processed material conveyed to the 1st sorting part is biased, and the sorting efficiency in the 1st sorting part can be made favorable.

In the above configuration,
A first guide body is provided on the upper surface of the wavy portion to guide the threshing processed product from the left and right side to the left and right center side of the first sorting unit,
It is preferable that a second guide body for guiding from the left and right other side to the left and right center side is provided on the upper surface of the flat portion.

  According to this configuration, the threshing processed product is collected by the first guide body and the second guide body to the left and right center side and conveyed to the first sorting unit. It is possible to avoid biasing to the left or right, and to improve the sorting efficiency in the first sorting unit.

In the above configuration,
A stroller is provided on the lower side of the first sorting unit in the transport direction,
A support member for supporting the transport start end of the Strollac is provided;
It is preferable that a front-facing inclined surface is formed on the upper side of the support member in the transport direction.

  According to this configuration, when the sorting processed product including the discharge transported from the transport terminal portion of the first sorting unit hits the support member of the strolac, the sorting processed product follows the inclined surface of the support member. And flow down smoothly. Thereby, for example, compared with the case where the front end of the support member is bent upward, it is possible to make the sorting processed material and the discharged matter less likely to stay on the support member.

It is a left view of a normal type combine. It is a left view which shows the structure of a threshing apparatus. It is a top view which shows a selection part. It is a left view which shows the circumference | surroundings of Kara. It is a left view which shows the periphery of an adjustment mechanism. It is sectional drawing of the front view of the periphery of a 2nd selection part. It is a perspective view which shows the periphery of a 2nd selection part. It is a left view which shows the periphery of an adjustment mechanism.

〔overall structure〕
1 is mounted on a pair of left and right crawler travel devices 11. The body frame 10 of the ordinary combine (corresponding to “combine”) shown in FIG. The machine frame 10 is provided with a threshing device 12 for threshing a crop and a crop collection device 13 for storing and discharging the crop in parallel on the left and right. A driving cabin 14 is mounted in front of the crop collection device 13. On the front side of the threshing device 12, a cutting and conveying device 15 is provided. An engine 16 that supplies power for driving the crawler traveling device 11, the cutting and conveying device 15, the threshing device 12, and the crop collecting device 13 is mounted on the lower side of the operation cabin 14.

  A feeder 17 for transporting the harvested crop is connected to the harvesting and transporting device 15 so as to be swingable up and down around the lateral fulcrum X on the rear end side. A cutting portion 18 is connected to the front end side of the feeder 17. The cutting part 18 is provided with a clipper-type cutting blade 19. The cutting blade 19 has a cutting width substantially corresponding to the machine body width. The planted crop is cut by the cutting blade 19, and the cut crop that has been cut is fed into the feeder 17. The feeder 17 is equipped with a raking conveyor 20. The crop supplied from the cutting unit 18 is conveyed along the bottom surface of the feeder 17 and supplied to the threshing device 12.

  This ordinary combine is suitable for harvesting crops that can be re-sorted, such as wheat and autumn buckwheat, and crops that should not be re-sorted soy beans, summer soba, etc. It is possible to easily change the specifications of the state suitable for harvesting.

  The crops thrown into the threshing apparatus 12 are subjected to a threshing process and a sorting process in the threshing apparatus 12 shown in FIG. The crop grains that are the processed products are sent to the crop collection device 13, and the crop grains stored in the crop collection device 13 can be taken out by the unloader 21. The discharged material after the sorting process is guided by a guide hump 22A that guides the discharged material, and is discharged from the dust outlet 22 at the rear end of the threshing device 12 to the outside.

[About threshing equipment]
As shown in FIG. 2, the threshing device 12 includes a threshing unit 23 for threshing a crop, and a sorting unit 24 for performing a sorting process while conveying the threshing processed product after the threshing process.

  The threshing unit 23 is located at an upper portion inside the threshing case 25. The threshing unit 23 is provided with an axial-flow type handling cylinder 26 in which the rotational axis Z is aligned in the front-rear direction of the traveling machine body.

  The sorting unit 24 is located at a lower part inside the threshing case 25. The sorting unit 24 is provided with an oscillating sorting device 30 that is located below the handling cylinder 26 and that oscillates and transfers the object to be processed from the front to the rear.

  In the threshing device 12, the threshing processing direction in the threshing unit 23 and the sorting processing direction in the sorting unit 24 are set along the front-rear direction of the traveling machine body. And in the threshing apparatus 12, the upper side in the transfer direction of the workpiece is set to the front side of the traveling machine body, and the lower side in the transfer direction of the threshing processed product is set to the rear side of the traveling machine body.

  The threshing case 25 includes a front support plate 32 that supports the handling cylinder 26, a rear support plate 33, a lateral side plate 34 that is located on both the left and right sides, an upper cover 35 that constitutes a ceiling portion, and a bottom plate 36. ing. Thereby, the threshing case 25 is formed in the rectangular box shape.

  In the threshing portion 23 in the threshing case 25, handle teeth support bodies 38 along the front-rear direction in which a large number of handle teeth 37 constituted by round pipes are erected are provided at a plurality of positions at predetermined intervals in the circumferential direction. Is provided. That is, the threshing unit 23 is provided with a handling cylinder 26 configured in a bar type. The handling cylinder 26 is supported on the threshing case 25 side so as to be rotatable around a rotation axis Z facing forward and backward and to rotate clockwise in a front view. At the front end portion of the handling cylinder 26, a scraping feed portion 31 having a spiral blade 39 is provided continuously. Each handle tooth support 38 includes a wall-shaped front plate portion 48A connected to the feed-in portion 31, a plate-shaped intermediate support plate portion 48B positioned behind the front plate portion 48A, and an intermediate support plate portion 48B. Further, it is integrally supported by a plate-like rear plate portion 48C positioned rearward. The intermediate support plate portion 48 </ b> B is located in the front-rear center portion of the handling cylinder 26. An internal space I into which the threshing product can enter is formed on the side of the rotation axis Z from each handle tooth support 38. By driving the barrel 26, the threshing product can be retreated in the internal space I, and the threshing product is stirred in the internal space I, thereby promoting the threshing process.

  An arc-shaped receiving net 40 that is curved downward in a front-rear direction view is provided below the handling cylinder 26. A space in the threshing case 25 is vertically divided by the receiving net 40. That is, the space above the receiving net 40 is a handling chamber in which the handling cylinder 26 is housed. The threshing unit 23 is configured by the handling cylinder 26 provided in the handling room, the receiving net 40, and the like. The space below the receiving net 40 is a sorting room in which the swing sorting device 30 and the like are installed. The sorting unit 24 is configured by the swing sorting device 30 and the wind sorting device 45 provided in the sorting room.

  In the threshing unit 23, the whole of the harvested crop sent from the supply port 41 by the feeder 17 to the tip end is sent between the handling cylinder 26 and the receiving net 40 as an object to be threshed and threshed. The processed threshing product obtained by the processing is caused to leak from the receiving net 40 to the sorting unit 24. Moreover, in the threshing part 23, the sorting processed product returned from the first return port 42A and the second return port 42B for re-sorting is sent between the handling cylinder 26 and the receiving net 40 to perform the threshing process. The threshing processed product obtained by the threshing process is caused to leak from the receiving net 40 to the sorting unit 24.

  The sorting unit 24 is provided with a swing sorting device 30 positioned below the receiving net 40. The swing sorting device 30 swings in the front-rear direction while moving up and down by operating an eccentric cam type drive mechanism 43 provided at the rear end. As shown in FIG. 2 and FIG. 4, a red pepper 46 as a blowing means of the wind sorting device 45 is arranged at a lower position on the front side of the swing sorting device 30. As shown in FIGS. 2 and 4, the red pepper 46 generates a sorting wind by a rotating blade 47 that rotates counterclockwise in a left side view. The swing sorting device 30 receives the threshing processed product leaked from the receiving net 40 while swinging, and sorts the received threshing processed product while transferring the received threshing processed product to the lower side of the sorting processing direction as the processing target. The wind is sorted by the sorting wind from the tang ridge 46.

  As shown in FIGS. 2, 5, and 8, a first recovery unit 50 (first recovery unit) is provided below the position corresponding to the upper side in the sorting process direction in the swing sorting device 30. A second collection unit 51 (second collection unit) is provided on the lower side of the first collection unit 50 in the transport direction of the unit 24.

  The first collection unit 50 shown in FIG. 2 is located below a first sorting unit 61 and a second sorting unit 54 described later. The first recovery unit 50 is configured to recover the sorted product for storage. Specifically, the sorted product collected by the first collection unit 50 is conveyed to the crop collection device 13 via a lifting device 55 configured by a bucket conveyor or the like shown in FIG.

  The second collection unit 51 is configured to collect the sorting processed product for re-sorting. The second product that has flowed down to the bottom of the second recovery unit 51 is transported to the swing sorting device 30 through the second reduction device 56 configured by a bucket conveyor or the like shown in FIG. To do. The second thing is returned to the threshing unit 23 from the first return port 42A and the second return port 42B formed on the start end side of the threshing unit 23 by the second reduction device 56, and again, the threshing process and A sorting process is performed.

  As shown in FIGS. 5, 8, etc., the sheave case 57 is formed below the second sorting unit 54 and is formed in a slanted shape with a forward and downward slope. A guide portion 58 that guides the flow down toward the first recovery portion 50 is provided. The sheave case 57 is made of resin.

  As shown in FIG. 2, FIG. 5, etc., a screw for transporting crop grains is provided in each of the bottom of the first recovery unit 50 and the bottom of the second recovery unit 51. The first thing that has flowed down to the bottom of the first recovery unit 50 is conveyed to the crop recovery device 13 via the lifting device 55. The second product that has flowed down to the bottom of the second recovery unit 51 is transported through the second reduction device 56 and returned to the swing sorting device 30.

  The receiving net 40 shown in FIG. 2 is formed in an arc shape that is curved downward so as to cover a range that extends almost half a circumference on the lower side of the handling cylinder 26 when viewed along the rotational axis Z of the handling cylinder 26. ing. The receiving net 40 is formed in a straight line shape along the axial direction of the handling cylinder 26 when viewed in a direction orthogonal to the rotational axis Z of the handling cylinder 26.

[About swing sorting device]
The swing sorting device 30 shown in FIG. 2 and the like is provided with the sheave case 57 described above. Although not shown, the sheave case 57 is supported by the threshing case 25 so that the front side is slidable in the front-rear direction.

  The rear portion of the sheave case 57 is supported by a known eccentric cam type drive mechanism 43 using an eccentric ring. Accordingly, as the eccentric wheel of the drive mechanism 43 is rotationally driven, the rear portion of the sheave case 57 is driven to swing in the front-rear direction while being accompanied by vertical movement.

  By the operation of the swing sorting device 30, the threshing processed product that has leaked through the receiving net 40 is subjected to the sorting process including the grain and the discharged product while being subjected to specific gravity sorting and wind sorting. It has become.

  As shown in FIGS. 2 to 4, the sheave case 57 is provided with a corrugated front gren pan 60 (corresponding to “gren pan”) on the upper side in the transfer direction of the sorted product. A front gren pan 60 is provided on the upper side in the transport direction than the first sorting unit 61. A wavy portion 62 is provided at the upper side of the front gren pan 60 in the conveying direction to feed the threshing product to the lower side in the conveying direction. A flat part 63 is provided in the lower part of the front grain pan 60 in the transport direction.

  As shown in FIGS. 2 to 4, a first guide body 64 that guides the threshing processed product from the left and right sides to the left and right center side of the first sorting unit 61 is provided on the upper surface of the wave-like portion 62. On the upper surface of the flat portion 63, a second guide body 65 for guiding from the left and right other side to the left and right center side is provided.

  As shown in FIGS. 2 to 4, the first guide body 64 includes a pair of vertical plate-like first guide portions 66 extending along the vertical direction. A workpiece is guided between the pair of first guide portions 66. The pair of first guide portions 66 are inclined from the right end side of the sorting unit 24 toward the left and right center side of the sorting unit 24 as they go rearward from the first return port 42A and the second return port 42B. .

  As shown in FIGS. 2 to 4, the second guide body 65 includes an attachment portion 68 attached to the flat portion 63, and a second guide portion 69 extending along the vertical direction provided continuously to the attachment portion 68. , Is provided. The second guide part 69 is inclined so as to go from the left end side of the sorting part 24 toward the left and right center side of the sorting part 24 as it goes rearward. The second guide portion 69 is arranged so as to extend over the flat portion 63 and the Glen sieve 70.

  As shown in FIGS. 2, 5, and 8, the sorting unit 24 includes a first sorting unit 61 that roughly sorts the threshing processed product, and a refined threshing processed product that is located below the first sorting unit 61. A second sorting section 54 to be separated; and a third sorting section 71 that is located on the lower side of the first sorting section 61 in the transport direction and further sorts the sorting processed product that has passed through the first sorting section 61. ing.

  The first sorting unit 61 shown in FIG. 4 and the like is provided on the lower side in the transfer direction of the object to be processed than the front grain pan 60. The first sorting unit 61 conveys the object to be processed rearward following the conveyance end of the front grain pan 60. The starting end portion of the first sorting unit 61 is disposed in a state of being positioned lower than the front grain pan 60. The first sorting unit 61 is provided with a first chaff sheave 73 having a plurality of first chaffs 72 arranged in the transport direction. Each first char flip 72 is made of resin.

  As shown in FIGS. 2, 5, etc., the first sorting unit 61 is provided in a posture that is gently inclined upward and rearward so that the transport surface becomes slightly higher toward the lower side in the transfer direction. The conveyance surface of the first sorting unit 61 is a virtual surface that connects the upper edges of the plurality of first char flips 72. When the explanation is added, the conveying surface of the first sorting unit 61 causes the workpiece to be processed placed on the upper surface side of the plurality of first chucks 72 constituting the first sorting unit 61 to swing the entire sheave case 57. It is a conveyance surface for sending to the lower side in the transfer direction with it. In the first sorting section 61, the sorting particles are allowed to leak from the passage formed between the first char flips 72. It should be noted that the first angle changing mechanism connected to all the first char flips 72 can change the inclination angles of all the first char flips 72 in an integrated manner. The size of the passage and the inclination angle can be changed.

  As shown in FIGS. 2, 4, 5, and the like, a wave for receiving the object to be processed leaking from the front part of the first sorting unit 61 and feeding it backward is below the first sorting unit 61. A relay Glen pan 74 formed in a plate shape is provided. Subsequent to the rear end of the relay grain pan 74, a second sorting unit 54 for fine sorting is provided.

  As shown in FIG. 3, FIG. 5, FIG. 7, and FIG. 8, the second sorting unit 54 is provided with a Glen sheave 70 and an upper adjustment member 75. The grain sieve 70 of the second sorting portion 54 includes a perforated region portion 76 and a non-perforated region portion 77 provided on the rear end side of the perforated region portion 76. The perforated region portion 76 is made of punching metal in which a large number of through holes 78 are formed. The through-hole 78 formed in the second sorting portion 54 is not a general circular hole but a rectangular shape. Thus, when the through hole 78 is a rectangular hole, it is advantageous in that it is easier to ensure a large aperture ratio per unit area of the second sorting portion 54 than when the through hole 78 is a circular hole.

  As shown in FIGS. 5 and 8, etc., the rear end portion of the second sorting unit 54 is located slightly higher in the transport direction than the rear end portion in the transfer direction of the first sorting unit 61. It is extended. Most of the sorting processed products that have passed through the second sorting unit 54 flow down toward the first collecting unit 50, and are collected from the first collecting unit 50 through the lifting device 55 to the crop collecting device 13.

  On the lower side of the first sorting unit 61 in the transport direction, a Strollac 79 that transports the discharge toward the dust outlet 22 is provided. A support member 80 that supports the transport start end portion of the Strollac 79 is provided. The support member 80 is supported by the sheave case 57. A front-facing inclined surface 81 is formed on the upper side of the support member 80 in the transport direction. Sorted processed products exceeding the rear end of the first sorting unit 61 are conveyed to the stroller 79 via the support member 80.

  The third sorting unit 71 is provided with a second chaff sheave 82 having a plurality of second chaffs 83 arranged in the front-rear direction. Each second char flip 83 is made of resin. The third sorting unit 71 is located below the stroller 79. All of the sorted products that have leaked through the third sorting unit 71 flow down to the second collection unit 51. In addition, the sorted product that has passed without leaking through the third sorting unit 71 is discharged from the dust outlet 22.

  In the third sorting unit 71, the sorting particles are leaked from the passage formed between the second char flips 83 toward the second collecting unit 51. Note that the second angle changing mechanism (see FIG. 5) connected to all the second char flips 83 can integrally change the inclination angle of each second char flip 83. The size and inclination angle of the passage between the chaffs 83 can be changed.

  As shown in FIGS. 2, 5, etc., the third sorting unit 71 is provided in a posture that is gently inclined upward and rearward so that the transport surface is slightly higher toward the lower side in the transfer direction. The conveyance surface of the third sorting unit 71 is a virtual surface that connects the upper edges of the plurality of second char flips 83. In other words, the conveying surface of the third sorting unit 71 causes the workpiece placed on the upper surface side of the multiple second chuck flips 83 constituting the third sorting unit 71 to swing the entire sheave case 57. It is a conveyance surface for sending to the lower side in the transfer direction with it.

  A part of the sorting processed product falling from the conveyance end side of the first sorting unit 61, a part of the sorting processed product falling from the conveyance end side of the second sorting unit 54, and the sorting that has leaked the third sorting unit 71 The processed material flows down toward the second recovery unit 51, passes through the second reduction device 56, the start end side of the swing sorting device 30, that is, the first return port 42A and the second return port shown in FIG. 42B is returned to the upper side of the front Glen pan 60. The first return port 42 </ b> A and the second return port 42 </ b> B are located on the front end side of the threshing portion 23. The first return port 42 </ b> A is located on the upper side of the threshing unit 23. The second return port 42B is located below the first return port 42A and on the lower side of the threshing portion 23. The second reduction device 56 conveys the sorted product vertically upward from the second recovery unit 51 and then sends it forward along the horizontal direction by a screw (not shown). The first return port 42A and the second return It returns to the threshing part 23 from the mouth 42B.

[About the wind flow by Kara-an]
As shown in FIG. 4, the first wind guide member 85, the second wind guide member 86 located below the first wind guide member 85, and the second wind guide member 86 are located behind the tang 46. The third air guide member 87 and the fourth air guide member 88 positioned above the first air guide member 85 are provided. The first air guide member 85, the second air guide member 86, the third air guide member 87, and the fourth air guide member 88 are supported by the sheave case 57.

  The sheave case 57 includes a first wind direction plate portion 89, a second wind direction plate portion 90 located below the first wind direction plate portion 89, and a third wind direction plate portion 91 located below the second wind direction plate portion 90. A cover portion 92 is provided. The first wind direction plate portion 89, the second wind direction plate portion 90, the third wind direction plate portion 91, and the cover portion 92 are supported by the sheave case 57. The first wind direction plate portion 89 is located below the flat portion 63 of the front gren pan 60. The front end portion of the second wind direction plate portion 90 and the front end portion of the third wind direction plate portion 91 are connected. The second wind direction plate portion 90 has a horizontal upper surface and a horizontal lower surface. The cover part 92 is located on the upper side of the tang 46.

As shown in FIG. 4, the first wind path W <b> 1 formed between the lower surface of the fourth air guide member 88 and the upper surface of the first air guide member 85 among the wind generated in the tang 46 is guided. The wind passes between the lower surface of the first wind direction plate portion 89 and the upper surface of the second wind direction plate portion 90, flows above the first sorting portion 61, and obliquely upward from the lower surface side of the receiving net 40 of the threshing portion 23. It comes to blow up towards.
Moreover, the wind guided through the second air passage W2 formed between the lower surface of the first air guide member 85 and the upper surface of the second air guide member 86 among the winds generated in the tang 46 is the third wind direction. Guided between the horizontal lower surface of the plate portion 91 and the upper surface side of the relay grain pan 74, a part of the wind is blown obliquely upward from below the first chaff sheave 73. Here, since the lower surface of the third wind direction plate portion 91 is leveled, the wind guided on the lower surface of the third wind direction plate portion 91 can be the lower end of the second sorting unit 54 in the transport direction, It is easy to flow up to the upper side of the three sorting sections 71.
Moreover, the wind guided through the third air passage W3 formed between the lower surface of the second air guide member 86 and the upper surface of the third air guide member 87 among the winds generated in the tang 46 is second selected. It blows up diagonally upward from the lower surface side of the portion 54.

[Adjustment mechanism]
As shown in FIGS. 5 and 8, an adjustment mechanism 100 is provided that can adjust the size of the gap S between the conveyance terminal portion of the second sorting portion 54 and the rear upper end portion of the guide portion 58.

  The adjustment mechanism 100 includes a plate-like upper adjustment member 75 supported at the conveyance end portion of the second sorting unit 54 and a plate-like lower adjustment member 101 supported at the rear upper end portion of the guide portion 58. Is provided. A lower bent portion 75A that is bent obliquely downward is provided at the rear end portion of the upper adjustment member 75. An upper bent portion 101A that is bent vertically upward is provided at the rear end portion of the lower adjustment member 101.

  The upper adjustment member 75 has a first shortened state A1 in which the rear end portion of the upper adjustment member 75 is located on the upper side in the transport direction with respect to the position near the lower end portion of the rearmost chaff 102 at the transport end portion of the first chaff sheave 73. (Corresponding to the “shortened state”; see FIG. 5) and the first extended state A <b> 2 in which the rear end portion of the upper adjustment member 75 is located on the lower side in the transport direction with respect to the position near the upper end portion of the rearmost tail flip 102. Corresponding to “extended state” (see FIG. 8).

  As shown in FIGS. 3, 5, 7, and 8, the upper adjustment member 75 is located below the grain sieve 70. This makes it difficult for the sorted product to stay in the stepped portion between the upper adjustment member 75 and the grain sieve 70.

  As shown in FIGS. 3, 7, 8, and the like, the upper adjustment member 75 is formed with an upper elongated hole 103 along a pair of left and right front and rear directions. Upper weld bolts 104 are welded and fixed to the non-hole region 77 of the grain sheave 70 at positions corresponding to the upper elongated holes 103 provided in the upper adjustment member 75. The upper nut 105 is screwed onto the upper welding bolt 104 from below the upper adjustment member 75, and the upper adjustment member 75 and the non-hole region 77 are sandwiched between the head of the upper welding bolt 104 and the upper nut 105. It can be fixed with.

  By loosening the upper nut 105, the upper adjustment member 75 can slide with respect to the non-hole region 77 by moving the upper welding bolt 104 along the upper elongated hole 103. That is, the upper adjustment member 75 is supported by the non-hole region 77 so as to be slidable along the transport direction.

  The lower adjustment member 101 includes a second shortened state B1 (see FIG. 8) in which the rear end portion of the lower adjustment member 101 is positioned closer to the upper side in the transport direction than the front end portion of the support member 80, and the lower adjustment member 101. The rear end portion of the support member 80 can be changed to the second extended state B2 (see FIG. 5) located on the lower side in the transport direction than the front end portion of the support member 80.

  The lower adjustment member 101 can be changed to a state in which the rear end portion of the lower adjustment member 101 is positioned above the upper end portion of the conveyance terminal portion of the second sorting unit 54 by setting the second extended state B2. It has become. The state of the lower adjustment member 101 can be changed to a state in which the rear end portion of the lower adjustment member 101 is located behind the conveyance end portion of the first selection unit 61 by setting the second extension state B2. By setting the lower adjustment member 101 to the second extended state B <b> 2, the lower adjustment member 101 can enter between the conveyance end portion of the second sorting unit 54 and the conveyance start end portion of the third sorting unit 71.

As shown in FIGS. 7, 8, etc., the lower adjustment member 101 is positioned above the guide portion 58. In the lower adjustment member 101, three lower long holes 107 that are long in the front-rear direction are formed side by side. Lower welding bolts 108 are welded and fixed to the guide portions 58 at positions corresponding to the lower long holes 107 provided in the lower adjustment member 101. A lower nut 109 is screwed onto the lower welding bolt 108 from above the lower adjustment member 101, and the lower adjustment member 101 and the guide portion are interposed between the head of the lower welding bolt 108 and the lower nut 109. 58 is sandwiched and can be fixed.
By loosening the lower nut 109, the lower adjustment member 101 can slide relative to the guide portion 58 by moving the lower welding bolt 108 along the lower elongated hole 107. That is, the lower adjustment member 101 is supported by the guide portion 58 so as to be slidable along the extending direction of the guide portion 58.

  Further, as shown in FIGS. 2 and 5, a rubber-made flexible hump member 110 that guides the sorting processing product from the guide portion 58 toward the first recovery portion 50 is provided on the lower surface of the guide portion 58. Is provided. The guide portion 58 is provided with a flow guide member 111 below the hump member 110. The hump member 110 and the flow guide member 111 are fastened to the guide portion 58 with bolts or the like. The flow-down guide member 111 is a member that guides the sorted product that has dropped from the conveyance start end of the third sorting unit 71 toward the second collection unit 51.

  As shown in FIG. 1, on the left lateral outer side of the screening unit 24 of the threshing device 12, a first cover body 115 that can be opened and closed, and a second cover body 116 that can be opened and closed located behind the first cover body 115. And are provided. As shown in FIGS. 3, 6, and 7, the first cover body 115 and the second cover body 116 have a plate-like first surface having a lateral surface between the sorting section 24, as shown in FIGS. 3, 6, and 7. One vertical plate body 117 and a second vertical plate body 118 extending along the front-rear direction located closer to the sorting unit 24 than the first vertical plate body 117 are provided. As shown in FIGS. 2, 5, 7, and the like, the second vertical plate body 118 has a first inspection port 120 and a second inspection port 121 located behind the first inspection port 120. Has been.

  That is, the grain sieve 70 of the second sorting unit 54 is detachable from the side of the sorting unit 24 through the first inspection port 120. On the right lateral inner wall side of the sorting unit 24 of the threshing device 12, a pair of front and rear support pins 122 extending in the left-right direction are provided. A lateral pin hole 123 corresponding to the support pin 122 is provided at the right end of the grain sheave 70. Further, a pair of front and rear fixing holes 125 through which the fixing bolts 124 can be inserted from below are provided at the left end portion of the grain sieve 70.

The attachment / detachment of the grain sieve 70 and the upper adjustment member 75 will be described in detail.
First, the first cover body 115 and the second cover body 116 are opened, and the first vertical plate body 117 is exposed. Then, the knob bolt 126 is loosened, the first vertical plate body 117 fixed to the second vertical plate body 118 is removed, and the second vertical plate body 118 is exposed. A tool is inserted from the first inspection port 120 provided in the second vertical plate 118, and the left and right fixing bolts 124 are loosened. Then, when the Glen sheave 70 is pulled rightward, the engagement between the support pin 122 and the pin hole 123 is released. Thereby, the Glen sheave 70 and the upper adjustment member 75 can be integrally taken out through the first inspection port 120. For this reason, it is not necessary to remove the entire sheave case 57 when adjusting the position of the upper adjustment member 75 with respect to the grain sheave 70, and it is possible to easily perform adjustment work by taking out only the grain sheave 70 and the upper adjustment member 75.

By providing the adjustment mechanism 100 as described above, the re-sorting ratio can be changed.
For example, for soybeans, it is desirable to avoid contamination of the surface of crop grains as much as possible so as not to reduce the commercial value. Furthermore, crop grains are relatively easy to shatter from straw, and reselection should be avoided as much as possible. Is good. Further, summer soba has a lot of moisture, and if it is collected in the second collection unit 51, the second reduction device 56 is likely to be clogged, so it is desirable not to perform re-sorting. In the case of a crop that should not be subjected to such re-sorting as much as possible, for example, as shown in FIG. 5, the upper adjustment member 75 is set to the first shortened state A1, and the lower adjustment member 101 is set to the second extended state B2. By doing so, the gap S between the conveyance end portion of the second sorting unit 54 and the rear upper end portion of the guide unit 58 is increased, and the rate at which the sorting process product flows down to the second recovery unit 51 is the lowest, A sorting process that does not re-sort as much as possible can be realized.

  On the other hand, for example, for wheat, it is desirable to perform re-sorting in order to reduce the loss of crop grains discharged from the dust outlet 22 because impurities such as straw are easily mixed in the crop grains. Further, for example, autumn soba has a relatively low water content compared to summer soba, and even when recovered in the second recovery unit 51, the second reduction device 56 is relatively less clogged and re-sorts. Is possible. In the case of crops for which such re-sorting is desired, for example, as shown in FIG. 8, the upper adjustment member 75 is in the first extended state A2, and the lower adjustment member 101 is in the second shortened state B1. As a result, the gap S between the conveyance end portion of the second sorting unit 54 and the rear upper end portion of the guide unit 58 is reduced, and the rate at which the sorting processing product flows down to the second collection unit 51 is the highest, and the re-sorting is performed. It is possible to achieve a sorting process that suitably performs

  Thus, the upper adjustment member 75 is adjusted between the first shortened state A1 and the first extended state A2, and the lower adjustment member 101 is adjusted between the second shortened state B1 and the second extended state B2. Thereby, the rate at which the sorted product flows down to the second collection unit 51 can be flexibly changed according to the type of the crop.

[Another embodiment]
Hereinafter, another embodiment of the present invention will be described. Each of the following different embodiments may be applied to the above embodiment in combination as long as no contradiction arises. The scope of the present invention is not limited to the contents of these embodiments.

(1) In the above embodiment, the adjustment mechanism 100 can adjust the gap S by sliding the upper adjustment member 75 or the lower adjustment member 101, but is not limited thereto. Absent. For example, the adjustment mechanism 100 may be configured such that the upper adjustment member 75 and the lower adjustment member 101 are detachable, and the clearance S can be adjusted by attaching and detaching the upper adjustment member 75 and the lower adjustment member 101.

(2) In the above-described embodiment, the upper adjustment member 75 is located on the lower side of the grain sieve 70, but is not limited thereto. For example, the upper adjustment member 75 may be positioned above the grain sieve 70.

(3) In the above-described embodiment, the upper adjustment member 75 is supported by the non-hole region 77 so as to be slidable along the transport direction, but is not limited thereto. For example, the upper adjustment member 75 may be supported by the perforated region portion 76 so as to be slidable along the transport direction.

(4) In the above embodiment, the adjustment mechanism 100 is provided with the upper adjustment member 75 and the lower adjustment member 101, but is not limited thereto. Only one of the upper adjustment member 75 and the lower adjustment member 101 may be provided in the adjustment mechanism 100.

(5) In the above embodiment, the second recovery part 51 is located on the rear side of the first recovery part 50, but the present invention is not limited to this. For example, the first recovery unit 50 may be located behind the second recovery unit 51.

(6) In the above embodiment, the front Glen pan 60 provided with the wave-like part 62 and the flat part 63 is illustrated, but the present invention is not limited to this. For example, it may be a front Glen pan provided with only the wavy portion 62.

(7) In the above embodiment, the sheave case 57, the first char flip 72, and the second char flip 83 are made of resin, but the present invention is not limited thereto. For example, at least one of the sheave case 57, the first char flip 72, and the second char flip 83 may be made of metal.

(8) In the above embodiment, the handle teeth 37 are configured by round pipes, but the present invention is not limited thereto. For example, the handle teeth 37 may be configured by other members such as a square pipe, a square bar, and a round bar.

(9) In the above embodiment, the crop collection device 13 provided with the unloader 21 is illustrated, but the present invention is not limited to this. For example, a crop collection device provided with a bagging device for bagging crop grains with a hopper or the like may be used.

  The present invention is not limited to a combine for processing a bean crop such as soybean, but can also be used for a combine for harvesting wheat, straw, straw, sesame, rapeseed, or the like.

23: Threshing unit 24: Sorting unit 50: First collecting unit 51: Second collecting unit 54: Second sorting unit 58: Guide unit 60: Front gren pan (Glen pan)
61: First selection part 62: Wave-like part 63: Flat part 64: First guide body 65: Second guide body 72: First cha-flip (cha-flip)
73: First chaff sheave (chaff sheave)
75: Upper adjustment member 76: Perforated region portion 77: Non-hole region portion 79: Strollac 80: Support member 81: Inclined surface 100: Adjustment mechanism 101: Lower adjustment member A1: First shortened state (shortened state)
A2: First extended state (extended state)
S: gap

Claims (13)

A threshing section for threshing crops;
A sorting section that performs sorting processing while conveying the threshing product,
The sorting unit is provided with a first sorting unit for roughly sorting the threshing processed product, and a second sorting unit positioned under the first sorting unit for finely sorting the threshing processed product,
A first recovery unit that is located below the second selection unit and collects the processed material for storage;
A second recovery unit that is located on the lower side of the first recovery unit in the transport direction of the selection unit, and that recovers the processed material for re-sorting;
A guide unit that is positioned below the second sorting unit and is formed in a slanted shape with a front lowering, and guides the sorting processed product that has passed through the second sorting unit to the first recovery unit;
A combiner comprising: an adjustment mechanism capable of adjusting a size of a gap between a conveyance terminal portion of the second sorting unit and a rear upper end portion of the guide unit;   The combine according to claim 1, wherein the adjustment mechanism is provided with a plate-like upper adjustment member supported by a conveyance terminal portion of the second sorting unit. The first sorting unit is provided with a chaff sheave having a plurality of chi-flips arranged along the transport direction,
The upper adjustment member includes a shortened state in which the rear end portion of the upper adjustment member is positioned on the upper side in the transport direction with respect to the last chaff flip of the transport end portion of the chaff sheave, and the rear end portion of the upper adjustment member is The combine according to claim 2, wherein the combine can be changed to an extended state located on the lower side in the transport direction with respect to the last tail flip. The second sorting part is provided with a perforated area part, and a non-porous area part provided on the rear end side of the perforated area part,
The combine according to claim 2 or 3, wherein the upper adjustment member is supported by the non-hole region portion so as to be slidable along the transport direction.   The combine according to any one of claims 2 to 4, wherein the second sorting unit is detachable from a side of the sorting unit.   The combine according to any one of claims 1 to 5, wherein the adjustment mechanism is provided with a plate-like lower adjustment member supported by a rear upper end portion of the guide portion.   The combine according to claim 6, wherein the lower adjustment member is changeable to a state in which a rear end portion of the lower adjustment member is positioned above an upper end portion of a conveyance terminal portion of the second sorting unit.   The combine according to claim 6 or 7, wherein the lower adjustment member can be changed in a state in which a rear end portion of the lower adjustment member is located rearward of a conveyance end portion of the first sorting unit.   The combine as described in any one of Claims 6-8 with which the said lower side adjustment member is supported by the said guide part so that a slide is possible along the extension direction of the said guide part. A lower sorting side than the first sorting unit in the transport direction is provided with a third sorting unit that further sorts the sorting processed product that has passed through the first sorting unit,
The combine according to any one of claims 6 to 9, wherein the lower adjustment member is capable of entering between a conveyance end portion of the second sorting unit and a conveyance start end portion of the third sorting unit. On the upper side in the transport direction than the first sorting unit, a Glen pan is provided,
A wavy portion that performs a feeding action to the lower side in the transport direction with respect to the threshing processed product is provided at the upper side position in the transport direction of the Glen pan,
The combine as described in any one of Claims 1-10 with which the flat part is provided in the lower side location in the said conveyance direction among the said Glen pans. A first guide body is provided on the upper surface of the wavy portion to guide the threshing processed product from the left and right side to the left and right center side of the first sorting unit,
The combine of Claim 11 with which the 2nd guide body guided to the said left-right center side from the left-right other side is provided in the upper surface of the said flat part. A stroller is provided on the lower side of the first sorting unit in the transport direction,
A support member for supporting the transport start end of the Strollac is provided;
The combine as described in any one of Claims 1-12 by which the front-falling inclined surface is formed in the upper side location in the said conveyance direction among the said supporting members.

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