JP2017029114A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily avoid stains of crop grains when the crop grains pass a separation fall passage while avoiding reduction of separation accuracy in the separation fall passage by devising a structure of a chaff sieve.SOLUTION: A chaff lip plate 55 comprises: a fall guide face 55A guiding movement of a separated processing object in a fall direction between the front/rear chaff lip plates 55; and an opening degree adjustment face 55B protruding into a separation fall passage R1 in a direction crossing the fall guide face 55A. The opening degree adjustment face 55B includes plural notches s1 formed at plural positions in a longitudinal direction of the chaff lip plate 55 so as to form a large portion and a narrow portion of a passage width of the separation fall passage R1 depending on a size of a protruding area into the separation fall passage R1.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a threshing apparatus in which a sorting unit is provided with a chaff sheave for selecting an object to be threshed.

  Conventionally, in a sorting unit of a threshing apparatus, a large number of chaff flip plates along the longitudinal direction in a direction intersecting with the transfer direction of the object to be processed are provided with chaff sheaves arranged in parallel before and after the transfer direction. 2. Description of the Related Art There is known a structure in which a sorting and dropping passage is formed between the provided char flip plates so as to sort and drop an object to be processed during transfer (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-198662 (see paragraphs “0022” and “0023”, FIGS. 7 and 10)

  In the above-described conventional structure, the cha-flip plates formed of plate-like members are arranged in parallel at a predetermined interval before and after in the transfer direction. Each of the juxta flip plates arranged side by side is bent to have an L-shaped cross section, and is opened in a direction that intersects the flow guide surface along the flow guide surface along the vertical direction and the lower part of the flow guide surface. And a degree adjusting surface. The thus-configured cha-flip plate changes the width of the sorting drop passage existing between the char-flip plates by changing the inclination angle of the flow guide surface, and sorting according to the amount of the object to be processed. This is useful in that processing can be performed.

This structure has the following problems when sorting beans such as soybeans as objects to be processed.
In other words, when the material to be treated is soybean, etc., when passing through the sorting and dropping passage, the degree of contact between soybean crop grains or between crop grains and chaflip plates is reduced as much as possible to reduce crop grain contamination. It is hoped to do. However, if the sorting fall passage is made too wide, the sorting accuracy decreases, and if the sorting fall passage is narrowed, the time until leakage increases and the degree of contact between the crop grains or between the crop grains and the char flip board increases. Tend.
In particular, in the lower part of the flow guide surface of the cha-flip plate, there is an opening adjustment surface that protrudes in a direction intersecting the flow guide surface, and it falls in the sorting drop passage above the opening adjustment surface. There is a tendency that a lot of workpieces on the way tend to stay, and there is room for improvement in this respect.
If a large amount of material to be treated stays in the sorting fall passage above the opening adjustment surface and a lot of crop grains are accumulated in the sorting fall passage, the contact pressure between the crop grains increases, Since the degree of contact with the flip plate becomes strong and the crop grains are easily contaminated, it is desirable to avoid contact with the crop grains as much as possible in the sorting and dropping passage above the opening degree adjustment surface.

  In the present invention, the structure of the chaff sheave is devised, and an attempt is made to obtain a threshing device having a structure that easily avoids soiling of crop grains when passing through the sorting and dropping passage while avoiding a reduction in sorting accuracy in the sorting and dropping passage. Is.

  The threshing apparatus according to the present invention is characterized in that a large number of chaff flip plates along the longitudinal direction in a direction intersecting with the transfer direction of the workpiece are provided with chaff sheaves arranged side by side in the transfer direction. A sorting and dropping passage for sorting and dropping a workpiece to be transported is formed between the installed char flip plates, and the char flip plates are sorted between the front and rear char flip plates. A flow guide surface that guides the movement of the workpiece to be dropped in a falling direction, and an opening adjustment surface that projects into the sorting drop passage in a direction intersecting the flow guide surface, Cutout portions are formed at a plurality of locations in the longitudinal direction of the char flip plate so as to form a wide portion and a narrow portion of the sorting and dropping passage according to the size of the projecting area into the sorting and dropping passage. Features A.

According to the present invention, since there is a notch portion on the opening adjustment surface that protrudes into the sorting fall passage, retention of crop grains when passing through the sorting fall passage is avoided while maintaining sorting accuracy in the sorting fall passage. be able to.
Therefore, there is an advantage that it is easy to avoid soiling of crop grains without reducing the sorting accuracy.

  In the present invention, in the opening adjustment surface, it is preferable that the total width of the notch portions in the longitudinal direction is larger than the total width of the portions where the notch portions do not exist in the longitudinal direction. is there.

  By providing this configuration, the aperture ratio on the opening adjustment surface can be further improved.

  In the present invention, the cha-flip plate includes a plate-like lip main body having the flow-down guide surface, and a plurality of latches arranged in parallel at the lower end of the lip main body in the longitudinal direction of the lip main body. It is preferable that the opening adjusting surface is formed by the locking body, and the notch portion is formed between the locking bodies.

  As in the present configuration, the opening degree adjusting surface is formed by a plurality of engaging bodies arranged in parallel at intervals in the longitudinal direction of the lip body, whereby a large cutout portion can be easily configured.

  In the present invention, it is preferable that the locking body is composed of a rod-shaped member protruding toward the sorting and dropping passage.

  According to the present invention, the locking body can be configured with a simple structure.

  In the present invention, it is preferable that a reinforcing rib along the longitudinal direction of the lip main body is formed to protrude from the lower end side of the lip main body toward the side opposite to the side on which the locking body protrudes. It is.

  According to the present invention, the shape retaining strength of the lip body can be improved by using the reinforcing rib. Since the protruding direction of the reinforcing rib is opposite to the protruding direction of the locking body, the reinforcing rib also reduces the width of the selecting and dropping passage, so the selecting and dropping passage from which the reinforcing rib protrudes. It is possible to reduce the projecting length of the latching body projecting into the same passage and to reduce the size.

  In the present invention, it is preferable that the reinforcing rib is formed on the lower end side of the lip body, and the locking body is formed on the lower side of the reinforcing rib.

  According to the present invention, by using the reinforcing rib, the shape retaining strength of the lip main body can be improved, and the reinforcing rib can be effectively used as the mounting surface of the locking body to simplify the structure. It is.

  In the present invention, the flow guide surface is formed in an inclined posture in which the lower side in the transfer direction is higher, and the locking body intersects the flow guide surface and the upper side in the transfer direction faces upward. It is preferable that the projection is formed in a posture.

  According to the present invention, crop grains that slide down the flow down guide surface leak while returning to the upper side in the transport direction, and can further receive the sorting process in the lower stage as long as possible. At the same time, the locking body is formed so as to protrude in the posture in which the upper side in the transfer direction is upward, so that the locking body has a smaller area than the case where the protruding direction of the locking body is downwardly lowered. However, it is easy to effectively exert a sorting action on the object to be processed.

It is a left view of the normal type combine which applied the threshing apparatus of this invention. It is sectional drawing in the up-down direction in alignment with the barrel direction of a threshing apparatus. It is sectional drawing in the up-down direction orthogonal to the barrel direction of a threshing apparatus. It is a perspective view which shows a receiving net | network. It is a perspective view which shows the surface on the opposite side to the side which opposes a handling cylinder among receiving nets. It is a side view which shows a receiving network. It is the VII-VII sectional view taken on the line in FIG. It is the VIII-VIII sectional view taken on the line in FIG. It is the IX-IX sectional view taken on the line in FIG. It is an up-down direction sectional view in side view which shows the front part of a sheave case. It is an up-down direction sectional view in front view which shows a part of sheave case. It is a perspective view which shows a char flip board. It is sectional drawing which shows a char flip board. It is a rear view which shows a char flip board. It is a perspective view which shows a Glen sieve. It is sectional drawing which shows the char flip board in another embodiment.

Hereinafter, an example of an embodiment of the present invention will be described based on the drawings.
In the description of the present embodiment, the front-rear direction and the left-right direction are described as follows unless otherwise specified. In other words, the forward traveling direction (see arrow F in FIG. 1) during traveling of the traveling machine body 1 such as a normal combine to which the present invention is applied is “forward”, and the backward traveling direction (arrow B in FIG. 1). Reference) is “rear”, the direction corresponding to the right side with reference to the forward posture in the front-rear direction (see arrow R in FIG. 3) is “right”, and similarly the direction corresponding to the left side (see arrow L in FIG. 3). ) Is “left”.

〔overall structure〕
FIG. 1 is an overall side view of an ordinary combine harvester for harvesting beans. In this combine, a body frame 10 is mounted on a pair of left and right crawler traveling devices 11. The machine frame 10 is provided with a threshing device 2 for threshing a crop and a crop recovery device 12 for storing and discharging the crop in parallel on the left and right, and a driving cabin 13 is mounted in front of the crop recovery device 12. The cutting and conveying device 14 is provided in a state of being positioned in front of the threshing device 2.
In addition, an engine 15 that supplies power for driving the crawler traveling device 11, the mowing and conveying device 14, the threshing device 2, and the crop collecting device 12 is mounted in a state of being located below the operation cabin 13.

  The harvesting and transporting device 14 disposed in front of the threshing device 2 is connected to a feeder 16 for transporting the harvested crop so as to be swingable up and down around a lateral fulcrum x1 on the rear end side. On the front end side of the feeder 16, a clipper-type cutting blade (not shown) is provided, and a cutting portion 17 that cuts the planted crop with a cutting width substantially equivalent to the width of the machine body and sends it to the feeder 16 is connected. ing.

The feeder 16 is equipped with a scraping conveyor 16 </ b> A, and is configured so that an object to be processed supplied from the cutting unit 17 can be conveyed along the bottom surface of the feeder 16 and supplied to the threshing apparatus 2.
Various crops such as rice barley, straw, straw, beans, sesame seeds, and rapeseed are present as crops to be harvested by ordinary combine harvesters. Here, crops to be treated are harvested from soybeans. In the following, the whole soybean, which is the target crop, is referred to as an object to be treated in the course of any treatment by the combine. Among the processed objects, the soybean grain intended for harvesting is referred to as the crop grain, and pods and foliage are discharged. It is called a thing.

  The to-be-processed object thrown into the threshing apparatus 2 is threshed and selected in the threshing apparatus 2. Among the objects to be processed, the selected crop grains are sent to the crop collection device 12 and taken out from the unloader 12A of the crop collection device 12 to the outside. After the sorting, the discharged matter is shredded through a shredding device 18 provided at the rear end of the threshing device 2, and then dropped and released to the outside of the machine.

[Threshing equipment]
The threshing apparatus 2 is configured as follows.
As shown in FIG. 2 and FIG. 3, the threshing apparatus 2 is provided with a threshing portion 2 </ b> A for threshing an object to be processed in an upper portion of the threshing case 20, and a lower portion inside the threshing case 20. In addition, a sorting unit 2B for sorting the object to be processed after the threshing process is provided. The threshing unit 2A is provided with an axial-flow type handling cylinder 3 having a rotational axis z1 along the front-rear direction of the traveling machine body 1, and the sorting unit 2B is located below the handling cylinder 3 so that an object to be processed is disposed. A swing sorting device 5 that swings and transfers from the front to the rear is provided.

In this threshing apparatus 2, the threshing processing direction in the threshing unit 2A and the sorting processing direction in the sorting unit 2B are both along the front-rear direction of the traveling machine body 1, and the transfer direction of the workpiece is the front side of the traveling machine body 1 On the side, the lower side is set to be the rear side of the traveling machine body 1.
The threshing case 20 includes a front support plate 21 that supports the handling cylinder 3, a rear support plate 22, lateral side plates 23 that are positioned on both the left and right sides, an upper cover 24 that forms a ceiling portion, and a bottom plate 25. It is formed in a box shape.

  In the threshing part 2A in the threshing case 20, a handling cylinder configured as a bar type is provided by providing handle teeth support bodies 30 provided with a large number of bar members 30a in a plurality of locations at predetermined intervals in the circumferential direction. 3 is provided. The handling cylinder 3 is supported so as to be rotatable about a front-rear rotation axis z1 and to rotate in a clockwise direction fR (see FIG. 3) in a front view. At the front end of the barrel 3, a feeding section 31 having a spiral blade 31 a is continuously provided.

An arc-shaped receiving net 4 that is curved downward in a front-rear direction view is provided below the handling cylinder 3. A space in the threshing case 20 is vertically divided by the receiving net 4. That is, the space above the receiving net 4 forms a handling chamber in which the handling cylinder 3 is built, and the handling cylinder 3 and the receiving net 4 arranged in this space constitute the threshing portion 2A. Yes.
Further, the space below the receiving net forms a sorting chamber in which the swing sorting device 5 and the like are built, and the swing sorting device 5 and the wind sorting device 6 installed in this space are the sorting unit. 2B is configured.

  In the threshing unit 2A, the whole crop stock sent from the supply port 26 by the feeder 16 to the tip is sent between the barrel 3 and the receiving net 4 as an object to be threshed and threshed. The crop grains obtained by the above are leaked from the receiving net 4 to the sorting unit 2B, and discharges such as foliage and pods generated by the threshing process are discharged from the dust outlet 27 to the shredding device 18.

The sorting unit 2B is provided with a swing sorting device 5 positioned below the receiving net 4.
The swing sorting device 5 swings in the front-rear direction while moving up and down by operating an eccentric cam type drive mechanism 5A provided at the rear end. In the lower position on the front side of the swing sorting device 5, a red pepper 60 as a blowing means of the wind sorting device 6 is provided. As shown in FIG. 2, the Kara 60 generates sorting air by rotating blades that rotate leftward when viewed from the left side. The swing sorting device 5 receives a processed material leaked from the receiving net 4 while swinging, sorts the received processed product as a target to be sorted, while moving the screen to the lower side of the sorting process, It is comprised so that a wind force may be selected with the selection wind from 60.

  The first collecting unit 5B is provided below the upper side corresponding portion in the sorting processing direction in the swing sorting device 5, and the second collecting unit 5C is provided below the lower side corresponding portion in the sorting processing direction. ing. The bottom of the first recovery unit 5B and the bottom of the second recovery unit 5C are each provided with a screw for conveying crop grains. The first thing that has flowed down to the bottom of the first collecting unit 5B is conveyed to the crop collecting device 12 through the lifting device 5D. The second product that has flowed down to the bottom of the second recovery unit 5C is transported through a second reduction device (not shown) and returned to the swing sorting device 5.

[Receiving network]
The receiving network 4 used in the threshing unit 2A will be described.
As shown in FIG. 2 to FIG. 4, the receiving net 4 is bent downward so as to cover a range extending almost half a circumference on the lower side of the handling cylinder 3 when viewed in the direction along the rotation axis z <b> 1 of the handling cylinder 3. It is formed in an arc shape. Then, when viewed in a direction perpendicular to the rotation axis z <b> 1 of the handling cylinder 3, the handling cylinder 3 is formed in a linear shape along the axial direction of the handling cylinder 3.

As shown in FIGS. 3 and 4, the receiving network 4 includes a first receiving network body 40 a (unit receiving network) that exists in a region corresponding to one side of the handling cylinder 3 with respect to the rotation axis z <b> 1 in the left-right direction. And a second receiving net body 40b (corresponding to the unit receiving net body 40) existing in a region corresponding to the other side of the rotation axis z1 as a boundary. The receiving net body 40a and the second receiving net body 40b are combined to cover the lower side of the handling cylinder 3.
Further, as shown in FIG. 2, the receiving net 4 is positioned below the front receiving net 4 </ b> F located below the front half side in the axial direction of the handling cylinder 3 and below the latter half side in the axial direction of the handling cylinder 3. It is configured in combination with the rear receiving network unit 4R. Each of the front receiving network portion 4F and the rear receiving network portion 4R is divided into the first receiving network body 40a and the second receiving network body 40b as described above. Therefore, the receiving net 4 used in the threshing unit 2A includes the first receiving net 40a and the second receiving net 40b in the front receiving net 4F and the first receiving net 40a and the second in the rear receiving net 4R. A total of four unit receiving network bodies 40 including the receiving network body 40b is configured.

Each of the unit receiving network bodies 40 constituting the receiving network 4 is configured as follows.
That is, the unit receiving net body 40 corresponding to the receiving net 4 has a basic structure in which a pair of arcuate frame members 41 that are located apart from each other in the axial direction of the handling cylinder 3 and the arcuate frame members 41 and 41 are installed. And a bowl-shaped crosspiece member 42.
Each of the pair of arcuate frame members 41, 41 is formed in an arc shape along the circumferential direction of the handling cylinder 3. And each edge part in the circumferential direction bent and formed in a circular arc shape in one arcuate frame member 41 among the arcuate frame members 41, 41 is each edge part in the circumferential direction in the other arcuate frame member 41, They are connected via a linear outer frame member 43.
The linear outer frame member 43 is composed of a metal plate formed in a straight line along the axial direction of the handle cylinder 3 and is welded to the end portions in the circumferential direction of the arc-shaped frame members 41 to form a pair of arcuate shapes. An outer peripheral frame 40 </ b> A of the rectangular unit receiving net 40 is formed together with the frame member 41.

As described above, a pair of arcuate frame members 41, 41 that are located apart from each other in the axial direction of the barrel 3 are disposed inside the outer peripheral frame 40 </ b> A formed in a rectangular shape by the arcuate frame member 41 and the linear outer frame member 43. The eaves-shaped crosspiece member 42 laid over each other is disposed along the circumferential direction of the arc-shaped frame member 41 with a gap of a predetermined interval d1. Each hook-shaped crosspiece member 42 is made of a metal round pipe material. Between the hook-shaped crosspiece members 42, there is a gap of the predetermined interval d <b> 1 starting from the hook-shaped crosspiece member 42 at a position closest to the abutting end of the first receiving net body 40 a and the second receiving net body 40 b. It is arranged in a state.
As shown in FIG. 3, the first receiving net body 40a and the second receiving net body 40b are arranged in a region corresponding to one side with a vertical line y1 passing through the rotation axis z1 of the barrel 3 as a boundary. The net body 40a is present, the second receiving net body 40b is present in a region corresponding to the other side, and the butted end portion thereof is disposed in a state directly below the vertical line y1. And the connection hole 43a is formed in each linear outer frame member 43 which exists in the butt | matching edge part of the 1st receiving net body 40a and the 2nd receiving net body 40b, and the connecting bolt 44 is inserted in this connecting hole 43a. Are connected to each other (see FIGS. 3 and 4).

  The predetermined interval d1 between the bowl-shaped crosspiece members 42 forms a gap that allows the crop grains after threshing to pass through the predetermined interval d1 without stagnation and that can suppress the leakage of discharge larger than the crop grains as much as possible. Set to do. In relation to this predetermined interval d1, as shown in FIGS. 3 and 7, the diameter d2 of the round pipe member constituting the bowl-shaped crosspiece member 42 is set to be not less than half the predetermined interval d1. And smaller than the predetermined interval d1. Moreover, the hook-shaped crosspiece member 42 is appropriate in that the predetermined interval d1 is appropriate for the passage of crop grains after threshing without stagnation, and the hook-shaped crosspiece member 42 itself is formed of a round pipe material. The flow of the crop grains that come into contact with the round pipe material is made smooth so that contamination of the crop grains is easily avoided.

The arc-shaped frame member 41 has a circumferential plate portion 41A having an arc-shaped plate surface along the circumferential direction of the handling cylinder 3 and a radial direction of the handling cylinder 3 and a direction orthogonal to the axial direction of the handling cylinder 3. A radial plate portion 41B having a flat plate surface is combined to form a shape having an L-shaped cross section. The flat plate-like radial plate portion 41B includes a plate surface extending in a direction orthogonal to the axial direction of the handling cylinder 3, but the inner edge 41Ba and the outer edge 41Bb of the plate surface are Further, it is formed in an arc shape along the circumferential direction of the handling cylinder 3.
8 and 9, the inner peripheral edge 41Ba of the radial plate portion 41B is welded and fixed to the outer peripheral surface of the circumferential plate portion 41A. The bar member 42 is also fixed by welding.

At this time, among the plate surfaces of the radial plate portion 41B, the plate surface on the side facing the end of the bowl-shaped crosspiece member 42, and the axial edge 42a of the bowl-shaped crosspiece member 42 facing the plate surface In the state where the gap d3 is present to some extent, the bar-shaped crosspiece member 42 is welded and fixed to the outer peripheral surface of the circumferential plate portion 41A.
Thus, the gap d3 exists between the plate surface of the radial plate portion 41B and the end edge 42a in the axial direction of the bowl-shaped crosspiece member 42, so that the bowl-shaped crosspiece member is formed on the outer circumferential surface of the circumferential direction plate portion 41A. When welding and fixing 42, it is easy to ensure the welding length of the bar-shaped crosspiece member 42 with respect to the outer peripheral surface of the circumferential plate portion 41A as long as possible. That is, not only the direction along the longitudinal direction of the bowl-shaped bar member 42 but also the axial edge 42a and the diameter of the bowl-shaped bar member 42 are welded to the outer circumferential surface of the circumferential plate portion 41A. By effectively using the gap d3 between the direction plate portion 41B, it is possible to perform welding and fixing in the direction along the end edge 42a in the axial direction of the bowl-shaped crosspiece member 42.
And since the gap | interval d3 exists between the edge 42a of the axial direction of the saddle-shaped crosspiece member 42, and the radial direction board part 41B in this way, the axial direction length of each saddle-shaped crosspiece member 42 is set. Even if there is some variation in processing accuracy, the gap d3 can be effectively used to absorb the error in the length and be assembled without any trouble.

  The radial width d4 of the circumferential plate portion 41A in the direction along the radial direction of the handling cylinder 3 is formed to be approximately the same as the diameter d2 of the bowl-shaped crosspiece member 42. Therefore, the distance L1 from the rotational axis z1 of the barrel 3 to the outer edge of the circumferential plate 41A in a state where the circumferential plate portion 41A is welded and fixed is the rotational axis of the barrel 3 The distance L2 is approximately the same as the distance L2 from the center z1 to the outer peripheral surface on the side farther from the rotational axis z1 of the barrel 3 in the outer peripheral surface of the bowl-shaped crosspiece member 42.

Between the pair of arcuate frame members 41, 41 of the receiving net 4, there is a plate surface that is formed in an arc shape along the circumferential direction of the handling cylinder 3 and that extends in a direction orthogonal to the axial direction of the handling cylinder 3. An intermediate cross member 45 is disposed.
As shown in FIGS. 3 to 7, the inner cross member 45 has an inner peripheral edge 45 a located on the side closer to the handling cylinder 3, of the inner and outer end edges 45 a and 45 b of the intermediate cross member 45. The hook-shaped crosspiece member 42 is connected in a state of protruding to the side of the handling cylinder 3.
Of the end edges 45 a and 45 b of the intermediate cross member 45, the end 45 b on the outer peripheral side located on the side farther from the handle 3 in the radial direction of the handle 3 is a round pipe material constituting the bowl-shaped cross member 42. It is provided in a state of projecting by a predetermined projecting amount d5 on the side farther from the handle cylinder 3 than the outer peripheral surface of. This protrusion amount d5 corresponds to the shortest distance between the outer peripheral edge 45b of the intermediate beam member 45 and the outer peripheral surface of the round pipe material, and the radius of the round pipe material constituting the bowl-shaped beam member 42 Is set to the same level or smaller.

[Oscillating sorter]
The swing sorting device 5 provided in the sorting unit 2B will be described.
As shown in FIG. 2, the swing sorting device 5 includes a sheave case 50. Although not shown, the sheave case 50 is supported by the threshing case 20 so that the front side is slidable in the front-rear direction. The rear portion of the sheave case 50 is supported by a known eccentric cam type drive mechanism 5A using an eccentric wheel. Accordingly, as the eccentric wheel of the drive mechanism 5A is driven to rotate, the rear portion of the sheave case 50 is driven to swing in the front-rear direction while accompanying vertical movement.
By the operation of the swing sorting device 5, the processed material that has leaked through the receiving net 4 is subjected to sorting processing into crop grains and discharged products while being subjected to specific gravity sorting and wind sorting. .

The sheave case 50 includes a corrugated front gren pan 51 on the upper side in the transfer direction of the workpiece. The chaff sheave 52 for rough selection that conveys the object to be processed rearward following the conveyance end of the front grain pan 51 is lower than the front grain pan 51 in the transfer direction of the object to be processed, and the start end is the front grain pan. It arrange | positions in the state located lower than the sieve line 51a with which the terminal part of 51 was equipped.
The chaff sheave 52 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 conveying surface of the chief sheave 52 is to feed a workpiece to be processed placed on the upper surface side of a large number of the chaff flip plates 55 constituting the chief sheave 52 to the lower side in the transfer direction along with the swinging motion of the entire sheave case 50. This indicates a virtual surface that connects upper end edges of a large number of char flip plates 55.

On the lower side of the chaff sheave 52, a relay gren pan 53 formed in a corrugated plate shape is provided for receiving the object leaking from the front portion of the chaff sheave 52 and feeding it backward, and the rear end portion of the relay glen pan 53 Subsequently, a fine sieve 54 for fine selection is provided.
As shown in FIG. 10, FIG. 11, and FIG. 15, the fine sieve 54 for fine sorting is constituted by a punching metal having a large number of through holes 54a. The through-hole 54a formed in the grain sieve 54 is not a general circular hole but a rectangular shape. Thus, the through-hole 54a formed by the rectangular hole is advantageous in that it is easy to ensure a large aperture ratio per unit area of the grain sieve 54, compared to the case where it is formed by the circular hole.

The rear end portion of the grain sheave 54 extends to an intermediate position in the transfer direction of the chaff sheave 52, and the crop grains that have passed through the grain sheave 54 flow down toward the first recovery portion 5B, and the first recovery portion. From 5B, it is recovered by the crop recovery device 12 via the lifting device 5D.
The object to be processed that has passed beyond the rear end of the grain sheave 54 and the object to be processed that has leaked from the lower side of the intermediate position in the transfer direction of the chaff sheave 52 flow down toward the second recovery section 5C, and are not shown. It passes through the number reduction device and is returned to the start end side of the swing sorting device 5, that is, to the upper side of the front grain pan 51.
Since the material to be processed that has been conveyed from the chaff sheave 52 to the end of the chaff sheave 52 is a waste that contains almost no crop grains, it is discharged downward from the dust outlet (not shown) at the rear of the aircraft. Is done.

The chaff sheave 52 attached to the sheave case 50 is configured as follows.
As shown in FIGS. 10 and 11, the chaff sheave 52 includes a large number of cha-flip plates 55 arranged in the longitudinal direction in a direction intersecting the transfer direction of the object to be processed, with a predetermined interval before and after the transfer direction. Are arranged in parallel.
A sorting and dropping passage R1 for sorting and dropping the workpieces being transferred is formed between the respective char flip plates 55 arranged at a predetermined interval before and after in the transfer direction.
The wind flowing from the lower side to the upper side of the sorting fall passage R1 becomes the sorting wind for wind-sorting the object to be processed existing on the chaff sheave 52. This sorting wind is a wind supplied from the wind sorting device 6 disposed in front of the sorting unit 2B, and performs a wind sorting process operation that blows off a light workpiece through the grain sheave 54 and the chaff sheave 52. is there.

As shown in FIG. 11, each char flip plate 55 is pivotally supported with respect to the lateral side wall 50A of the sheave case 50 by an upper lateral support shaft 50C attached via a support arm 50B so that the upper end portion can swing freely. Has been.
The lower ends of the respective cha-flip plates 55 are connected to each other by a lower horizontal support shaft 50D and a connection plate 50E that connects the lower horizontal support shafts 50D, and swing back and forth about the horizontal axis p1 of the upper horizontal support shaft 50C. It is pivotally supported. The connecting plate 50E that connects the lower horizontal support shafts 50D is connected to an appropriate opening degree adjusting mechanism (not shown), and the position of the connecting plate 50E is changed in the front-rear direction, thereby lowering the lower end of each cha-flip plate 55. The side swings and the tilt angle changes. With the change in the inclination angle of the cha-flip plate 55, the flow passage area of the sorting and dropping passage R1 is changed to be wider or narrower.

As shown in FIGS. 12 to 14, each of the char flip plates 55 is a flow guide surface that guides the movement of the selected workpiece in the falling direction between the front and rear cha flip plates 55, 55. 55A and an opening degree adjustment surface 55B that protrudes into the sorting drop passage R1 in a direction crossing the flow guide surface 55A.
Of these, the flow-down guide surface 55 </ b> A is formed in a plate-like portion that is the lip body 56 of the char flip plate 55, but the opening adjustment surface 55 </ b> B is in contact with the lower end portion of the lip body 56. It is constituted by a plurality of locking bodies 57 arranged in parallel at intervals in the longitudinal direction.
In other words, with respect to the lower end surface of the lip main body 56, a large number of locking members 57 made of rod-like members are spaced apart in the longitudinal direction of the lip main body 56, and the protruding end side is directed toward the sorting drop passage R1. It is fixed by welding so that it protrudes. Accordingly, the char flip plate 55 is formed in an L shape in a state in which the lip main body 56 and the locking body 57 are substantially orthogonal in a side view.

By disposing a large number of locking bodies 57 in the longitudinal direction of the lip body 56 in this manner at a predetermined interval in this way, the opening adjustment surface 55B is provided with the lip body 56, for example, as indicated by phantom lines in FIG. The area of the opening adjustment surface 55B can be greatly reduced as compared with the structure formed in the entire longitudinal direction. The space existing between the locking bodies 57 corresponds to the cutout portion s1 formed in the opening adjustment surface 55B. The upper surface of the locking body 57 corresponds to a portion where the cutout portion s1 does not exist.
Accordingly, the sum of the widths of the portions of the lip body 56 where the cutout portion s1 exists in the longitudinal direction is configured to be larger than the sum of the widths of the portions of the lip body 56 where the cutout portion s1 does not exist. Has been.

Thus, in the longitudinal direction of the lip body 56, the width of the portion where the notch portion s1 is present is made larger than the width of the portion where the notch portion s1 is not present, thereby greatly reducing the area of the opening adjustment surface 55B. As a result, the passing rate of the object to be processed in the sorting and dropping passage R1 can be greatly increased.
If the gap between the front and rear lip bodies 56 is increased to increase the flow area of the sorting and dropping passage R1, the processed material can easily pass and avoid the retention of crop grains, but the specific gravity of the processed material is selected. The accuracy will be drastically reduced. Conversely, if the space between the front and rear lip bodies 56 is reduced to reduce the flow path area of the sorting and dropping passage R1, the material to be processed becomes difficult to pass and the specific gravity sorting accuracy is improved, but the crop grains are retained. become.
In the present embodiment, instead of changing the flow passage area of the sorting and dropping passage R1 by adjusting the distance between the front and rear lip bodies 56, a position where the notch portion s1 is present on the opening adjustment surface 55B, By forming a portion in which the cutout portion s1 does not exist, improvement in sorting accuracy and prevention of soiling of crop grains are achieved.
By adopting such a structure, the reduction of the specific gravity sorting accuracy is suppressed in the portion where the notch portion s1 does not exist, and the passage rate of the object to be processed is improved at the place where the notch portion s1 exists, thereby producing crop grains. To prevent stagnation.

  Further, by providing a location where the notch portion s1 is present on the opening adjustment surface 55B, there is a tendency that the air volume of the wind selection air in the sorting and dropping passage R1 increases, so the notch portion s1 exists on the opening adjustment surface 55B. Even if the area of the part is enlarged and the sorting accuracy in specific gravity sorting tends to decrease, the sorting air is sent in the direction opposite to the direction in which the workpiece is dropped, thereby suppressing the decrease in specific gravity sorting performance. The effect | action which becomes easy also arises.

As shown in FIG. 13, the lower end portion of the lip body 56 is bent in a rib shape toward the side opposite to the side on which the locking body 57 is formed to protrude, and the reinforcing rib 58 along the longitudinal direction of the lip body 56. Projectingly formed. The reinforcing rib 58 can improve the bending strength of the lip main body 56, particularly in the direction intersecting the plate surface constituting the flow guide surface 55A.
At the same time, the reinforcing rib 58 bent in a direction intersecting the plate surface of the lip body 56 has a plate of the lip body 56 having an area much larger than the area due to the plate thickness of the lip body 56 at the lower end of the lip body 56. A surface in a direction intersecting the surface can be formed. By fixing the locking body 57 to the lower side of this surface by welding, a portion having a sufficient area as a mounting surface of the locking body 57 can be formed on the lower end side of the lip body 56.

The lip main body 56 is formed in an inclined posture that rises backward so that the flow-down guide surface 55A is inclined so that the lower side is higher in the transfer direction of the workpiece. Accordingly, a selective drop passage R1 with a predetermined interval is formed between the lip bodies 56 arranged at a predetermined interval before and after the workpiece in the transfer direction.
The locking body 57 is welded and fixed to the lower surface of the reinforcing rib 58 bent in a direction intersecting the plate surface of the lip body 56, and exists on the upper side in the transport direction in the direction intersecting the flow guide surface 55A of the lip body 56. It attaches so that it may protrude toward the sorting fall passage R1. The flow guide surface 55A of the lip body 56 is in a tilted posture that rises backward so that the lower side in the direction of transfer of the object to be processed is higher, whereas the locking body 57 has the flow down of the lip body 56. In a state of being substantially orthogonal to the guide surface 55A, it is disposed in an upwardly inclined posture that is inclined so that the upper side is higher in the transfer direction of the workpiece.

[Other Embodiment 1]
In the above embodiment, as a means for configuring the opening adjustment surface 55B having the notch portion s1, a structure using a plurality of locking bodies 57 arranged in parallel at intervals in the longitudinal direction of the lip body 56 is used. Although illustrated, it is not limited to this structure.
For example, a plate-like member having a plate surface in a direction intersecting the flow-down guide surface 55A is welded and fixed to the lower end portion of the lip main body 56 to form the opening adjustment surface 55B, and the cut-out portion s1 is provided in the plate-like member. Thus, the notch portion s1 may be provided on the opening adjustment surface 55B. Alternatively, the opening adjustment surface 55B may be formed by bending the lower end portion of the lip body 56, and the notch s1 may be provided on the opening adjustment surface 55B.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above embodiment, the flow guide surface 55A of the lip body 56 is formed in an inclined posture in which the lower side in the transfer direction is higher, and the locking body 57 intersects the flow guide surface 55A and the upper side in the transfer direction is An example of a structure that protrudes into the sorting drop passage R1 that exists on the upper side in the transfer direction than the flow down guide surface 55A of the lip main body 56 to which the locking body 57 is attached is illustrated in an upward posture. It is not something that can be done.
For example, as shown in FIG. 16, the locking body 57 protrudes into the sorting and dropping passage R1 existing on the lower side in the transfer direction than the flow guide surface 55A of the lip body 56 to which the locking body 57 is attached. It may be a thing.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the above-described embodiment, the structure in which the reinforcing rib 58 bent at the lower end portion of the lip body 56 is formed so as to protrude in the direction opposite to the protruding direction of the locking body 57 is illustrated. It is not limited to.
For example, although not shown, the reinforcing rib 58 and the locking body 57 may be formed so as to protrude in the same direction. In this case, the reinforcing rib 58 and the locking body 57 may be formed as an integral plate-like body (not shown), but plays a role as the locking body 57 rather than a portion functioning as the reinforcing rib 58. The protruding length of the part needs to be large. Further, the reinforcing rib 58 can be omitted.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the above-described embodiment, a structure using a round pipe is exemplified as the bowl-shaped crosspiece member 42 constituting the receiving net 4, but the cross-sectional shape is not necessarily limited to a perfect circle. Absent. For example, an oval shape such as an ellipse, or a semicircular shape having a circumferential surface that curves upward may be used. Moreover, you may comprise not only a round pipe but a solid round bar member.
In this case, it is desirable that the major axis direction of the cross-sectional circle is a direction along the radial direction of the handling cylinder 3, and in the case of a semicircular shape, the top of the arcuate circumferential surface that curves upward is the A direction along the radial direction is desirable.
Other configurations may be the same as those in the above-described embodiment.

  The present invention is not limited to processing soybeans, but may be applied to combine harvesting rice, wheat, straw, straw, beans, sesame, rapeseed and the like.

52 Chaff sheave 55 Chaff flip plate 55A Downflow guide surface 55B Opening adjustment surface 56 Lip body 57 Locking body 58 Reinforcement rib R1 Sorting drop passage s1 Notch

Claims (7)

A large number of chaff flip plates along the longitudinal direction in a direction intersecting with the transfer direction of the workpiece are provided with chaff sheaves arranged in parallel before and after the transfer direction,
A sorting and dropping passage is formed between the juxta flip plates arranged side by side for sorting and dropping the workpieces being transferred.
The cha-flip plate includes a flow-down guide surface that guides movement of the sorted workpieces in the drop direction between the front and rear cha-flip plates, and the sorting drop passage in a direction intersecting the flow-down guide surface. With an opening adjustment surface protruding inward,
The opening adjustment surface includes a plurality of the chaflip plates in the longitudinal direction so as to form a wide portion and a narrow portion of the sorting drop passage according to the size of the projecting area into the sorting fall passage. Threshing device in which a notch is formed at a location.   2. The threshing apparatus according to claim 1, wherein, in the opening adjustment surface, a total sum of widths of the notch portions in the longitudinal direction is larger than a sum of widths of portions where the notch portions do not exist in the longitudinal direction. The cha-flip plate is a plate-like lip body provided with the flow-down guide surface;
A plurality of locking bodies arranged in parallel at an interval in the longitudinal direction of the lip body at the lower end of the lip body;
The threshing apparatus according to claim 1 or 2, wherein the opening adjustment surface is formed by the locking body, and the cutout portion is formed between the locking bodies.   The threshing apparatus according to claim 3, wherein the locking body is configured by a rod-shaped member protruding toward the sorting and dropping passage.   The reinforcing rib along the said longitudinal direction of the said lip body is protrudingly formed in the lower end side of the said lip body toward the opposite side to the side in which the said locking body protruded formation. Threshing device.   The threshing apparatus according to claim 5, wherein the reinforcing rib is formed on a lower end side of the lip body, and the locking body is formed on a lower side of the reinforcing rib. The flow down guide surface is formed in an inclined posture in which the lower side in the transfer direction is the upper side,
The threshing device according to any one of claims 3 to 6, wherein the locking body is formed so as to protrude in a posture that intersects the flow-down guide surface and the upper side in the transfer direction faces upward.

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