JP2017029113A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a threshing device including a receiving net which ensures an opening ratio and strength required for the receiving net, having relatively light weight, and having excellent fall-down capacity of a processed object.SOLUTION: A receiving net 4 includes: a pair of arcuate frame members 41 formed in an arcuate shape in a peripheral direction of a threshing cylinder 3 and positioned while separated from each other in an axial direction of the threshing cylinder 3; and plural rod-like crosspiece members 42 formed in a straight line shape in the axial direction of the threshing cylinder 3 and arranged parallely at gaps having a predetermined interval d1 in the peripheral direction of the threshing cylinder 3. The rod-like crosspiece members 42 are arranged across the arcuate frame members 41, and thereby the receiving net 4 is configured. The rod-like crosspiece member 42 is composed of a round pipe material.SELECTED DRAWING: Figure 3

Description

  The present invention includes a handling cylinder and a receiving net disposed below the handling cylinder. The receiving net has an arcuate frame member along the circumferential direction of the handling cylinder, and a linear shape along the axial direction of the handling cylinder. And a threshing device provided with the bowl-shaped crosspiece member.

  Conventionally, in a threshing apparatus, as a receiving net, a first bar member made of a sheet metal formed in an arc shape along the circumferential direction of the handling cylinder, and a second rod-shaped circular cross section along the axial direction of the handling cylinder. The thing of the structure which comprised the grid | lattice-like receiving net | network using the crosspiece member is known (for example, refer patent document 1).

Japanese Patent Laying-Open No. 2005-52104 (see paragraph “0016”, FIGS. 3 and 4)

In the threshing apparatus provided with the receiving net having the above structure, the second rail member having a circular cross section is projected from the edge of the first rail member on the barrel side to the barrel side. This is useful in that the crop is prevented from coming into contact with the edge of the edge on the side of the barrel, and damage to the crop is easily avoided.
However, this structure has room for improvement in the following points.
In other words, when configuring such a receiving network, it is required to have an aperture ratio and strength necessary for the receiving network. With this structure, in order to ensure a large aperture ratio necessary for the receiving network. The first crosspiece member and the second crosspiece member are constituted by a relatively narrow member in plan view. And in order to maintain the intensity | strength as a receiving net, there exists a tendency for the usage number of a 1st crosspiece member or a 2nd crosspiece member to increase. For this reason, the weight and processing man-hour of the whole receiving network may become large, or the leakage performance of the receiving network may be reduced.

  The present invention is intended to provide a threshing device having a structure that ensures an aperture ratio and strength necessary for a receiving net, and is relatively light and excellent in leakage performance of a workpiece.

  The threshing apparatus according to the present invention is characterized by a threshing apparatus including a handling cylinder and a receiving net disposed below the handling cylinder, and formed in the receiving net in an arc shape along a circumferential direction of the handling cylinder. A pair of arcuate frame members that are located apart in the axial direction of the handle cylinder, and a plurality of the arcuate frame members that are formed in a straight line along the axial direction of the handle cylinder and that are arranged in parallel with a predetermined gap in the circumferential direction of the handle cylinder A plurality of bowl-shaped crosspiece members, the bridge-shaped crosspiece members are constructed across the arcuate frame members to form the receiving net, and the bowl-shaped crosspiece members are made of a round pipe member. There is a feature in the point.

According to the present invention, since the bowl-shaped crosspiece member is made of a round pipe material, the outer diameter of the hook-like crosspiece member can be formed larger than that of a solid bar-like member having the same weight. .
As a result, by using a round pipe having a large diameter, there is an advantage that stalks and scraps in the workpiece are not easily entangled and easily slipped off.
Moreover, since the bending strength of the bowl-shaped crosspiece member itself is increased by increasing the diameter, the number of intermediate crosspiece members used between the pair of arcuate frame members can be reduced, and the weight of the entire receiving net can be reduced. This is advantageous in that it can be easily reduced and the aperture ratio of the receiving network can be secured.

  In the present invention, the arc-shaped frame member includes a circumferential plate portion having a plate surface along the circumferential direction of the handling cylinder, and a plate surface along the radial direction of the handling cylinder and perpendicular to the axial direction. And a radial plate portion having a combined L-shaped cross section, and the axial end portion of the bowl-shaped crosspiece member has a gap between the radial plate portion and the radial plate portion. It is preferable to be fixed to the circumferential direction plate portion.

By providing this structure, it becomes easy to perform the operation | work which attaches a saddle-like crosspiece member retrofit with respect to the arc-shaped frame member framed beforehand.
For example, one end portions of a pair of arcuate frame members positioned apart in the axial direction of the handling cylinder are connected by another frame member along the axial direction of the handling cylinder, and the other end portions of the arcuate frame members are further separated. Let us consider a case in which the frame members are connected to each other to assemble a substantially rectangular frame, and then the bar-shaped cross member is welded and fixed across the arc-shaped frame members of the rectangular frame.
In this case, in order to assemble with no gap between the end in the axial direction of the saddle-shaped beam member and the radial plate portion of the arc-shaped frame member, the axial length of all the saddle-shaped beam members must be accurately set. It must be configured to match the distance between the arcuate frame members. However, according to the present invention, even if there is some variation in the length in the axial direction of each hook-shaped crosspiece member, the gap between the axial end of the hook-shaped crosspiece member and the radial plate portion is effectively used. Then, it can be assembled without any trouble by absorbing the error of the length.

  In the present invention, in the end portion fixed to the circumferential plate portion of the bowl-shaped crosspiece member, a range including an end edge of the bowl-shaped crosspiece member facing the radial plate portion is the circumferential plate portion. It is preferable that it is fixed by welding.

  When the range including the edge of the saddle-shaped crosspiece member facing the radial plate portion is welded and fixed to the circumferential plate portion as in this configuration, for example, in the end portion of the saddle-shaped crosspiece member, Only in the direction along the longitudinal direction of the crosspiece member, the weld line can be secured longer and the connection strength can be improved as compared with the structure fixed to the circumferential plate by welding.

  In the present invention, it is preferable that the diameter of the round pipe member constituting the hook-shaped crosspiece member is set to be not less than half of the predetermined interval.

  According to the present invention, the diameter of the round pipe material constituting the bowl-shaped crosspiece member is configured to be not less than half of the predetermined interval for allowing passage of crop grains in the object to be processed. It will be formed thick. For this reason, crop grains tend to slide down the peripheral surface of the round pipe, and there is a tendency that entanglements such as sheaths and foliage portions other than crop grains are less likely to occur.

  In the present invention, it is preferable that the diameter of the round pipe member constituting the hook-shaped crosspiece member is set to be smaller than the predetermined interval.

  According to the present invention, the diameter of the round pipe material constituting the bowl-shaped cross member is configured to be smaller than the predetermined interval for allowing the passage of the crop grain, so that the opening of the entire receiving net is formed by the presence of the round pipe. It is possible to avoid the possibility that the rate is reduced or the weight of the receiving net is increased.

  In the present invention, the receiving net corresponds to a first receiving net body present in a region corresponding to one side of the handling cylinder as a boundary and the other side of the rotation axis as a boundary. And a plurality of eaves-like crosspiece members, the eaves at the position closest to the abutting end of the first egress net and the second eaves net. It is preferable that the gap members are arranged with the predetermined interval from the starting point of the bar member.

  According to the present invention, the crop from the receiving net is maintained in an appropriate range in the aperture ratio of the receiving net near the lower part of the rotation axis of the handling cylinder, where most of the workpieces are most likely to exist. It is easy to maintain the leakage rate of grains in an appropriate state, and it is easy to ensure good threshing performance.

  In the present invention, the arc-shaped frame member includes a circumferential plate portion having a plate surface along the circumferential direction of the handling cylinder, and a plate surface along the radial direction of the handling cylinder and perpendicular to the axial direction. And a radial plate part provided with a L-shaped cross section, and the distance from the outer peripheral surface of the saddle-shaped bar member to the outer peripheral surface on the side far from the rotation axis of the barrel is It is preferable that the radial plate portion is set to be approximately the same as the distance from the rotation axis of the handling cylinder to the end edge on the far side.

According to the present invention, when the crop grain passes through the interval between the peripheral surfaces of the adjacent saddle-shaped crosspiece members and falls, the crop grain is less likely to be caught by the radial plate portion of the arc-shaped frame member.
That is, the crop grains fall and move while being sent backward along the outer peripheral surface of the bowl-shaped crosspiece member. For this reason, the edge of the radial plate portion of the arc-shaped frame member on the side far from the rotation axis of the handle cylinder is larger than the outer peripheral surface of the outer surface of the saddle-shaped crosspiece member that is far from the rotation axis of the handle cylinder. When protruding downward, crop grains moving backward while falling may be caught on the radial plate portion of the arc-shaped frame member, resulting in damage or contamination. In contrast, according to the present invention, the distance from the outer peripheral surface of the saddle-shaped crosspiece member to the outer peripheral surface on the side farther from the rotational axis of the handling cylinder is smaller than the rotational axis of the handling cylinder in the radial plate portion. Since the distance is set to be approximately the same as the distance to the edge, it is easy to avoid such a problem.

  In the present invention, the receiving net has a plate surface between the pair of arcuate frame members that is formed in an arc shape along the circumferential direction of the handling cylinder and that extends along a direction orthogonal to the axial direction. It is preferable that the saddle-shaped crosspiece member is connected to an end edge of the middle crosspiece member closer to the handling cylinder in a state of protruding from the end edge toward the handling cylinder side. is there.

  As in this configuration, by providing an intermediate beam member, it is possible to reduce the possibility that crop grains in the object to be treated will come into contact with the intermediate beam member, and the crop particles may be caught by the intermediate beam member to cause damage or contamination. Less is.

  In the present invention, an end edge of the middle rail member on the side farther from the handling cylinder in the radial direction of the handling cylinder is located on a side farther from the handling cylinder than an outer peripheral surface of the round pipe material. Is preferred.

  According to the present invention, since the intermediate beam member is located also on the side farther from the handling cylinder than the outer peripheral surface of the round pipe material, the intermediate beam member having a structure that can easily avoid contact with crop grains in the object to be processed The strength of the entire receiving network can be improved.

  In the present invention, the shortest distance between the edge of the middle crosspiece member in the radial direction of the barrel in the radial direction and the outer peripheral surface of the round pipe member is the radius of the round pipe member. It is preferable that it is set smaller than this.

  According to this configuration, the intermediate beam member located on the side farther from the handling cylinder than the outer peripheral surface of the round pipe material has a protruding amount to the side farther from the handling cylinder than the outer circumferential surface of the round pipe material. Since it is limited to a range smaller than the radius, it is possible to reduce the possibility of crop grains being caught on the protruding portion.

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.

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 the upper part of 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 when an eccentric cam type drive mechanism 5A provided at the rear end portion operates. 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.

  A first collecting unit 51 is provided below the upper side corresponding portion in the sorting process direction in the swing sorting device 5, and a second collecting unit 52 is provided below the lower side corresponding portion in the sorting processing direction. ing. The bottom of the No. 1 recovery part 51 and the bottom of the No. 2 recovery part 52 are each equipped with a screw for conveying crop grains. The first item flowing down to the bottom of the first recovery unit 51 is conveyed to the crop recovery device 12 via the lifting device 53. The second item that has flowed down to the bottom of the second recovery unit 52 is transported through the 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.

[Other Embodiment 1]
In the above-described embodiment, as the receiving network 4, the unit receiving unit formed by dividing the first receiving network body 40a and the second receiving network body 40b in the front receiving network unit 4F and the rear receiving network unit 4R, respectively. Although the net structure 40 is used to exemplify a structure composed of a combination of a total of four unit receiving net bodies 40, the present invention is not limited to this structure.
For example, a unit receiving network body 40 having a structure divided in a finer range, or a structure formed by a single body that is not divided into the first receiving network body 40a and the second receiving network body 40b, is used. Alternatively, a structure in which the entire unit receiving network 40 is configured may be employed.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above embodiment, as the unit receiving net body 40 of the receiving net 4, the outer peripheral frame 40 </ b> A formed in a rectangular shape with a pair of arc-shaped frame members 41 and a linear outer frame member 43 that connects each end thereof is used. An example of a structure in which a large number of bowl-shaped crosspiece members 42 are disposed inside the outer peripheral frame 40A is illustrated, but the present invention is not limited to this.
For example, although not shown, a large number of eaves-shaped crosspiece members 42 are installed and fixed across a pair of arcuate frame members 41, 41 without using the linear outer frame member 43 constituting a part of the outer peripheral frame 40A. The unit receiving network body 40 may be configured as described above.
In this case, the connection between the first receiving net body 40a and the second receiving net body 40b may be performed by connecting the respective arc-shaped frame members 41 to each other.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the above embodiment, the distance L1 from the rotation axis z1 of the handling cylinder 3 to the outer peripheral edge of the circumferential plate portion 41A, and the outer circumferential surface of the bowl-shaped crosspiece member 42 from the rotation axis z1 of the handling cylinder 3 Of these, the example in which the distance L2 from the rotation axis z1 of the handling cylinder 3 to the outer peripheral surface far from the rotation axis is similar is shown, but the present invention is not limited to this structure.
For example, the distance L1 to the edge on the outer peripheral side of the circumferential plate portion 41A is greater than the distance L2 from the outer peripheral surface of the saddle-shaped crosspiece member 42 to the outer peripheral surface on the side farther from the rotational axis z1 of the handling cylinder 3. Also, a structure having a large structure or a small structure may be employed.
However, if the distance L1 to the outer peripheral edge of the circumferential plate portion 41A is too large than the distance L2 to the outer circumferential surface of the bowl-shaped crosspiece member 42, the discharged material after passing through the receiving net 4 is the circumferential plate. If it is too small, the strength of the circumferential plate 41A may be reduced, or the discharged material may be caught by contact with the edge 42a of the bowl-shaped cross member 42, which is not preferable. . Therefore, it is preferable that there is no significant difference.
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. However, the round pipe is not necessarily limited to a circular shape in cross section. For example, an oval shape such as an ellipse or a semicircular circumferential surface that curves upward may be used.
In this case, it is desirable that the major axis direction of the pipe is a direction along the radial direction of the handling cylinder 3. When the pipe is semicircular, the top of the arcuate circumferential surface that curves upward is the radius of the handling cylinder 3. A direction along the 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.

DESCRIPTION OF SYMBOLS 3 Handling cylinder 4 Receiving net | network 40a 1st receiving net body 40b 2nd receiving net body 41 Arc-shaped frame member 41A Circumferential direction plate | board part 41B Radial direction plate | plate part 42 Gutter-shaped crosspiece member 45 Middle crosspiece member 45a Edge 45b End edge d1 Predetermined space d2 diameter d3 gap d5 shortest distance L1 distance L2 distance z1 rotation axis

Claims (10)

A threshing apparatus comprising a handling cylinder and a receiving net disposed below the handling cylinder,
A pair of arcuate frame members that are formed in an arc shape along the circumferential direction of the handle cylinder and are separated from each other in the axial direction of the handle cylinder, and a linear shape that extends along the axial direction of the handle cylinder, A plurality of bowl-shaped cross members arranged in parallel with a gap of a predetermined interval in the circumferential direction of the barrel,
The receiving net is configured by laying the hook-shaped crosspiece member over the arcuate frame members,
A threshing apparatus in which the bowl-shaped crosspiece member is made of a round pipe material. The arcuate frame member includes a circumferential plate portion having a plate surface along a circumferential direction of the handling cylinder, and a radial direction having a plate surface along a radial direction of the handling cylinder and perpendicular to the axial direction. The plate portion and the L-shaped cross section combined,
The threshing apparatus according to claim 1, wherein an end portion in the axial direction of the hook-like cross member is fixed to the circumferential plate portion with a gap between the radial plate portion.   In the end portion fixed to the circumferential plate portion of the hook-shaped crosspiece member, a range including the edge of the hook-shaped crosspiece member facing the radial plate portion is welded and fixed to the circumferential plate portion. The threshing apparatus according to claim 2.   The threshing device according to any one of claims 1 to 3, wherein a diameter of the round pipe member constituting the bowl-shaped crosspiece member is set to half or more of the predetermined interval.   The threshing device according to any one of claims 1 to 4, wherein a diameter of the round pipe member constituting the bowl-shaped crosspiece member is set smaller than the predetermined interval. The receiving net is a first receiving net that exists in a region corresponding to one side of the handling cylinder as a boundary, and a first region that exists in a region corresponding to the other side of the rotation axis as a boundary. Divided into two receiving bodies,
The plurality of hook-shaped crosspiece members are spaced apart from each other by a predetermined interval from the hook-shaped crosspiece member at a position closest to the abutting end of the first receiving net body and the second receiving net body. The threshing apparatus as described in any one of Claims 1-5 arrange | positioned. The arcuate frame member includes a circumferential plate portion having a plate surface along a circumferential direction of the handling cylinder, and a radial direction having a plate surface along a radial direction of the handling cylinder and perpendicular to the axial direction. The plate portion and the L-shaped cross section combined,
The distance from the outer peripheral surface of the bowl-shaped crosspiece member to the outer peripheral surface far from the rotation axis of the handling cylinder is the distance from the rotation axis of the handling cylinder in the radial plate portion to the edge far from the rotation axis. The threshing apparatus as described in any one of Claims 1-6 set to the same grade. In the receiving net, an intermediate beam member formed between the pair of arcuate frame members in an arc shape along a circumferential direction of the handling cylinder and having a plate surface along a direction orthogonal to the axial direction. Prepared,
The saddle-shaped crosspiece member is connected to an end edge of the middle crosspiece member close to the handling cylinder in a state of protruding from the end edge toward the treatment cylinder side. The threshing device described.   The threshing according to claim 8, wherein an end edge of the middle rail member on a side farther from the handling drum in a radial direction of the handling drum is located on a side farther from the handling drum than an outer peripheral surface of the round pipe material. apparatus.   The shortest distance between the edge of the middle rail member in the radial direction of the handling cylinder in the radial direction and the outer peripheral surface of the round pipe material is set smaller than the radius of the round pipe material. The threshing apparatus according to claim 8 or 9.

Images