JP2013051902A - Threshing cylinder and general-purpose combine harvester therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a threshing cylinder having good maintainability and capable of securing a large process space, and to provide a general-purpose combine harvester therewith.SOLUTION: The threshing cylinder 11 has a threshing-cylinder frame formed by a first and a second frame members 34 provided oppositely to each other in axially different positions and by a plurality of bar members 37 extended axially between the first and second frame members 34 and disposed at predetermined circumferential intervals. A cover element 39 comprising a plate for covering an opening between the bar members 37 is mounted on the threshing-cylinder frame. The cover element 39 is disposed closer to the inner diameter side than the outer peripheral edges of the first and second frame members 34.

Description

  The present invention relates to a handling cylinder that rotates to thresh grain.

  In general, in a combine or harvester mainly used for harvesting cereals such as rice, wheat, and beans, a handling cylinder that rotates in a handling chamber and threshes the grain from the cereal (threshing) is widely known. Yes. Such a handling cylinder includes a so-called axial-flow type handling cylinder that conveys grain introduced by its own rotation in the axial direction, and a self-removal type that has a small grain conveying capacity because cereal grains are conveyed by a feed chain or the like. It is roughly classified into a handling cylinder for use, and is used properly according to the type of threshing device to be mounted. For example, Japanese Patent Application Laid-Open No. 11-266666 (Patent Document 1) discloses an axial-flow type treatment cylinder in which teeth are wound in a spiral shape on the outer periphery of a cylindrical body portion.

  By the way, when the handling cylinder is formed as described in Patent Document 1, most of the space in the handling chamber is occupied by arranging the handling cylinder, and only a narrow space around the handling cylinder has a processing space for threshing treatment. Does not remain. For this reason, Japanese Patent No. 4148978 (Patent Document 2) discloses a handling cylinder having a structure in which front and rear side frames are connected to each other with a rod-shaped member and teeth are projected outwardly from the rod-shaped member. .

  However, in the handling cylinder described in Patent Document 2, since the handling cylinder is formed only by the frame portion, there is a possibility that the threshing basket may be caught on the rod-like member or the rotating shaft and cannot be rotated smoothly. There was a problem that the cereals that entered could not be threshed.

  On the other hand, in Japanese Utility Model Laid-Open No. 60-28837 (Patent Document 3), the frame portion is formed by a frame frame provided at the front and back and a spike tooth bar connecting the frame frames, and A handling cylinder is described in which the gap is closed by a sealing plate.

  Thus, when the space between the spike-to-bars is covered with the sealing plate, it is possible to reduce the trapping of the cereals into the frame and the intrusion into the frame, and the frame frame is formed in a hexagonal shape when viewed in the axial direction. Therefore, the processing space for the cereal can be made wider than that of the cylindrical handling cylinder.

JP-A-11-266666 Japanese Patent No. 4148978 Japanese Utility Model Publication No. 60-28837

  However, since the handling cylinder described in Patent Document 3 has a sealing plate attached to the frame frame from the outer peripheral side, the outer peripheral edge of the handling cylinder is located on the outer diameter side of the frame frame and is larger in the radial direction. Therefore, it was still difficult to secure a sufficient processing space.

  In addition, since the sealing plate 969 is fastened together with the spike tooth, it is necessary to remove the bar and the spike tooth when removing the sealing plate, which requires labor and time for maintenance.

  Therefore, an object of the present invention is to provide a handling cylinder that is easy to maintain and can secure a large processing space, and a general-purpose combine equipped with the handling cylinder.

  The handling cylinder according to the present invention includes first and second frame members provided to face the rotation shaft at different positions in the axial direction, and the axial direction between the first and second frame members. A handling cylinder frame having a plurality of crosspieces that are extended and arranged at predetermined intervals in the circumferential direction, a plurality of toothings attached to the crosspieces, and detachable from the handling cylinder frame And a plurality of cover bodies made of plates that cover the openings between the crosspiece members at positions closer to the inner diameter side than the outer peripheral edges of the first and second frame members.

  According to the present invention, the cover body that covers the opening between the crosspiece members is disposed at an inner position than the outer peripheral edges of the first and second frame members so as to enter the inside of the treatment cylinder frame. It can be configured compactly in the direction, and the processing space between the handling chamber can be increased. Further, since the cover body is detachably attached to the handling frame, the cover body can be easily removed, and the maintainability is good.

The side view which shows the general purpose combine which concerns on embodiment of this invention. The schematic diagram which shows the threshing apparatus mounted in the general purpose combine of FIG. The front view of the threshing apparatus of FIG. The enlarged view of the handling cylinder of FIG. The schematic diagram which shows the state which removed the cover body from the handling cylinder in FIG. AA arrow sectional drawing of FIG. CC sectional view taken on the line of FIG. BB arrow sectional drawing of FIG. Assembly drawing of crosspiece members. The schematic diagram which shows the other example of the attachment method of a tooth treatment and a cover body. The schematic diagram which shows the other form of a handling cylinder. The schematic diagram which shows the other form of a handling cylinder.

  Hereinafter, the barrel and the threshing apparatus according to the embodiment of the present invention will be described with reference to the drawings. In addition, the threshing apparatus 6 of this Embodiment processes a processed material while flowing along the axial direction of the treatment cylinder 11, and the treatment cylinder 11 is what is called an axial flow type treatment cylinder. For this reason, in the following description, the grain processing direction is a direction from left to right in FIG. The front part in the processing direction is the left side in FIG. 1, and the rear part in the processing direction is the right side in FIG.

[General purpose combiner configuration]
As shown in FIG. 1, the general-purpose combiner 1 has a pre-processing unit 5 that harvests grain straw in the field in front of the machine body 3 supported by the traveling device 2, and the machine body 3 includes a pre-processing unit 5. A threshing device 6 for threshing and sorting cereals that have been cut and harvested is mounted.

  As shown in FIG. 2, the threshing device 6 includes a threshing unit 9 and a selection unit 7 provided below the threshing unit 9, and the threshing unit 9 threshs the grain from the cereal cocoon. At the same time, the sorting unit 7 is configured to sort out the mixture of the grains and impurities falling from the threshing unit 9.

  More specifically, the threshing unit 9 includes a handling chamber 10 and an axial-flow type handling cylinder 11 that is rotatably supported in the handling chamber 10. The front part is provided with a supply port 12 to which cereal grains cut from the feeder 13 are supplied.

  The handling cylinder 11 is composed of a scraping portion 11a at the front part of the culm processing direction and a handling processing part 11b at the rear part of the cereal processing direction, and the cereal supplied from the supply port 12 is The insertion portion 11a is scraped into the handling chamber. Further, teeth 15 are provided on the outer circumference of the handling section 11b toward the outer diameter side, and a space between the outer circumference 11s of the handling section 11b and the inner wall surface 10s of the handling chamber 10 is provided. A threshing treatment space S is formed (see FIG. 3). Therefore, the cereals scraped into the handling chamber are transported along the axial direction of the handling cylinder 11 and, together with the receiving net 16 that forms, for example, the bottom of the handling chamber 10 by the tooth handling 15 of the handling processing portion 11b. It is threshing between them.

  On the other hand, the sorting unit 7 includes a swing sorting body 17 located below the receiving net 16 and a red fan 19 located below the front portion of the swing sorting body 17. The rocking sorter 17 includes a rocking flow plate 20, a chaff sheave 21, a rack 22, and a Strollac 23. The rocking sorter 17 screens the mixture falling from the receiving net 16. The tang fan 19 winds from the lower front part to the upper rear part of the rocking sorter 17, and removes dust and other foreign matters from the mixture moving on the rocking sorter 25. It is configured to be blown out of the machine and screened.

  In addition, the first spiral 27 for collecting the selected grains into the Glen tank 26 (see FIG. 1) is provided behind the Kara fan 19, and on the rear side of the first spiral 27, A second spiral 29 is provided across the turbofan 24. In the second spiral 29, the insufficiently selected grain is collected and reduced onto the oscillating flow plate 20 or into the handling chamber 10.

[Configuration of the barrel]
Next, a detailed configuration of the handling cylinder 11 will be described with reference to FIGS. As shown in FIGS. 4 and 5, the handling cylinder 11 has a rotating shaft 30 that is rotatably supported by side plates before and after the handling chamber 10 inserted in the center thereof, and is provided on the front side in the axial direction. As a member that forms the scraping portion 11a, a frustoconical scraping portion main body 31 and a plate-shaped spiral blade 32 wound in a spiral shape on the outer periphery of the scraping portion main body 31 are provided. The handling cylinder 11 has a handling cylinder frame 33, a cover body 39, and a handling tooth 15 as members constituting the handling processing section 11 b that is continuous with the scraping section 11 a.

  The handling frame 33 is provided to face each other at different positions in the axial direction and includes first to third frame members 34, 35, and 36 including plate members having the rotation shaft 30 inserted in the center thereof, and crosspiece members 37.

  The first frame member 34 is located at the tip end in the axial direction in the handling section 11b, and is formed in a tapered shape as shown in FIG. 6 which is a cross-sectional view taken along the line AA in FIG. It is a circular plate having substantially the same diameter as the bottom portion on the large-diameter side in the scraping portion main body 31. The first frame member 34 also serves as an attachment member for the scraping portion 11a. By attaching the scraping portion main body 31 to the first frame member 34, the scraping portion 11a and the handling processing portion 11b are connected. It is connected.

  Further, the second frame member 35 is located at the rear end portion in the axial direction in the handling unit 11b, and as shown in FIG. 7 which is a cross-sectional view taken along the line CC in FIG. It is a circular plate of approximately the same diameter.

  Further, the third frame member 36 is located in an intermediate portion between the first and second frame members 34 and 35. As shown in FIG. 8 which is a cross-sectional view taken along the line BB in FIG. And it is a polygonal plate smaller in diameter than the second plate member.

  On the other hand, the crosspiece member 37 extends along the axial direction between the first and second frame members 34, 35, and a plurality of crosspiece members 37 are disposed at predetermined intervals in the circumferential direction. A plurality of teeth 15 are attached in alignment in the axial direction.

  As shown in FIG. 5, the cover body 39 is made of a plate that covers the openings Ap between the crosspiece members 37, and a plurality of the cover bodies 39 are provided according to the openings Ap between the crosspiece members. The handling section 11b (the handling cylinder 11) has a polygonal shape with a crosspiece member 37 as an apex when viewed from the axial direction (the hexagonal shape in this embodiment). Shape).

  Next, the connection relationship of the handling cylinder 11 will be described. As shown in FIG. 9, the crosspiece member 37 includes an attachment surface 41 to which the tooth handling 15 is attached, and two bending surfaces 42 bent in the same direction along a ridge line L extending in the axial direction on both ends of the attachment surface 41. , 43, and a cover body integrally connected so as to close a space between the tooth handling attachment member 40 made of a plate member having three surfaces and the bending surface formed on the opposite side of the attachment surface 41 of the tooth treatment attachment member 40. The tooth handling attachment member 40 and the cover body attachment seat 45 form a square pipe shape.

  Further, fixing members 46 and 47 attached to either of the first and second frame members 34 and 35 are respectively attached to the front and rear end surfaces in the axial direction of the tooth handling attachment member 40 and the cover body attachment seat 45. And it is welded similarly to the cover body mounting seat 45. Furthermore, a fixing member 49 that is attached to the third frame member 36 is welded to a central portion in the axial direction of the bottom surface of the cover body mounting seat 45. Further, the cover body mounting seat 45 protrudes outward from the respective connecting portions to which the two bent surfaces 42 and 43 are connected, and the cover body mounting surface for mounting the cover body 39 on both sides of the tooth handling mounting member 40. 45a and 45b.

  Further, the mounting surface 41 is formed with a plurality of tooth handling attachment portions (attachment holes) 50 arranged in the axial direction at a predetermined pitch P, and one of the plurality of tooth handling attachment portions 50 is arranged on one side. The first distance d1 from the one end side tooth-handling attachment portion 50a provided at the end to the one end portion of the crosspiece member 37 is from the other end side tooth-handling attachment portion 50b provided at the other end portion. The member 37 is formed to be larger than the second distance d2 to the other end. The tooth handle 15 is integrally fixed to the tooth handle mounting portion 50 and the cover body mounting seat 45 by welding.

  Further, as shown in FIG. 5, the cover body 39 includes an attachment portion 39a attached to the cover body attachment surfaces 45a and 45b, and an attachment portion 39b attached to the first and second frame members 34 and 35. doing.

  As shown in FIGS. 5 to 7, the cover body 39 and the crosspiece member 37 are connected to the first and second frame member connecting portions 39b and the fixing members 46 and 47 as described above. The first and second frame members 34 and 35 are fixed to the mutually opposing surfaces of the first and second frame members 34 by bolts at positions on the inner diameter side of the outer peripheral edges 34a and 35a of the frame members 34 and 35.

  In addition, the crosspiece member 37 is disposed so that the positions of the end portion on one side and the end portion on the other side are alternately opposite, so that, as shown in FIG. The position of the tooth 15 is shifted in the front-rear direction across a spiral slope line X inclined at a predetermined angle. More specifically, the tooth handling 15 has the first and second distances d1 and d2 and the pitch P so as to be the spiral slope line X when a straight line connecting adjacent tooth handling teeth 15 is approximated by a function. For example, the first and second distances d1 and d2 are set so that the positions of the adjacent crosspiece members 37 are shifted from each other by a half (1/2) P of the arrangement pitch P of the tooth handling teeth 15. Is done.

  Further, the crosspiece member 37 has a mounting portion 39a attached to the cover body mounting surfaces 45a and 45b by bolts and connected to the cover body 39, and the fixing member 49 is connected to the third frame member 36 by bolts on the inner diameter side. It is connected.

  As described above, the cover body 39 and the crosspiece member 37 are provided closer to the inner diameter side than the outer peripheral edges 34a and 35a of the first and second frame members 34 and 35, whereby the handling cylinder 11 is formed compact in the radial direction. Can do. And combined with having made the cross-sectional shape of the handling cylinder 11 into polygonal shape, the threshing processing space S between the handling chamber 10 and the handling cylinder 11 can be taken widely, and the processing capability of the threshing apparatus 6 can be improved. it can. Furthermore, since the first frame member 34 can be configured to be large in the outer diameter direction, it is possible to increase the diameter of the scraping portion 11a attached to the first frame member 34 and to obtain a high mashing ability. it can.

  Further, since the cover body 39 is detachably attached to the handling cylinder frame 33, the cover body 39 can be detached from the handling cylinder frame 33 simply by removing the bolts, and the handling cylinder 11 is ready for maintenance.

  Furthermore, when the crosspiece member 37 is configured, the pipe is formed by combining the bent members of the plate, so that it is not necessary to drill holes in the pipe, and the cost can be reduced. Further, since the cover body mounting seat 45 is used to form this pipe, it is not necessary to provide this mounting seat as a separate body, and the structure can be simplified. Furthermore, since the cover body mounting seat 45 and the tooth handling mounting member 40 are integrated, the strength can be maintained even if a thin plate is used, and the weight can be reduced.

  Further, since the attachment portions of the left and right cover bodies 39 of the tooth handling attachment member 40 are configured by one cover body attachment seat 45, the structure of the crosspiece member 37 can be further simplified.

  Furthermore, the first distance d1 from the one end side tooth-handling attachment portion 50a to the one end portion of the crosspiece member 37, and the other end of the crosspiece member 37 from the other end side tooth treatment attachment portion 50b provided at the other end portion. By disposing the second distance d2 to the end on the side and disposing the adjacent members in opposite directions alternately, the teeth 15 are disposed in a spiral shape while using the same cross member 37. can do.

  In the above-described embodiment, the tooth handling 15 is attached to the crosspiece member 37 by welding. However, as shown in FIG. At this time, the cover body 39 may be fastened to the tooth mounting member 40 with the bolt 60.

  Furthermore, the cover body 39 does not necessarily need to be fixed to both the crosspiece member 37 and the first and second frame members 34 and 35, and may be fixed to at least one of them. Further, as shown in FIG. 11A, the cover body 39 may be attached so as to close the opening Ap between the crosspiece members by forming a gap G. Even in this case, if the gap G is narrowed, the threshing cedar will not be caught on the crosspiece member 37, the mobilization rate of the threshing machine can be improved, and the cover body mounting surfaces 45a and 45b are not required. .

  Furthermore, the crosspiece member 37 may be a pipe having a square cross section (FIG. 11A), a pipe having a circular cross section (FIG. 11B), an elliptical pipe, or a solid rod-like member instead of a pipe. .

  Further, the handle cylinder 11 is formed in a regular hexagonal cylindrical shape in cross section perpendicular to the rotation shaft 30, but may be formed in any polygonal shape, and a cover body 39 made of a flat plate. May be curved to form a cylinder.

  In the present embodiment, six cross members 37 are used, but any number may be used as long as there are three or more cross members. However, an even number is preferable because the tooth handling 15 can be shifted by (1/2) P between the tooth handling of the adjacent array and the array pitch P.

  Furthermore, as shown in FIG. 11C, the cover body 39 may be bent toward the inner diameter side to further widen the processing space S between the handling cylinder 11 and the handling chamber 10. In other words, the cover body 39 may be configured to form a recess that is recessed toward the rotating shaft, and may be configured to further increase the amount of threshing per unit time by further increasing the acceptance amount of the threshing cereal meal. .

  Further, as shown in FIG. 12, the cover body 39 may be provided only on the front side in the processing direction of the third frame member 36. Further, the cover body 39 may be provided only on the rear side in the processing direction of the third frame member 36.

  When the cover body 39 is provided only on the front side in the processing direction of the third frame member 36, the following effects are obtained. That is, the harvested cereal mash fed to the threshing device is supplied to the front part in the processing direction of the handling chamber, guided to the outer periphery of the handling cylinder by centrifugal force due to the rotation of the handling cylinder, and further guided to the cover body 39. Move backwards. For this reason, the harvested cereal rice cake does not enter the starting end portion of the handling cylinder and become clogged. Then, the harvested cereal meal becomes a processed product while moving backward. Since the harvested cereal is processed, even if there is no cover body 39 at the rear part of the handling cylinder, it hardly enters the handling cylinder and wraps around the rotary shaft 30 or the crosspiece member 37. This eliminates the need for a long handling cylinder. Since the length of the shielding plate is short, the weight of the handling cylinder can be reduced. In addition, there is an effect that the harvested cereal meal and the processed product are hardly wound around the handling cylinder.

  When the cover body 39 is provided only on the rear side in the processing direction of the third frame member 36, the sorting air of the tang fan 19 flows smoothly to the dust outlet by the guidance of the shielding plate, so Loss can be reduced.

  In the above-described embodiment, the case where the handling cylinder 11 according to the present invention is mounted on the general purpose combine 1 has been described. However, the handling cylinder 11 may be mounted on, for example, a harvester. Needless to say, the invention described in this embodiment may be combined in any way.

11 Handle 15 Handle 30 Rotating shaft 33 Handle frame 34 First frame member 35 Second frame members 34a and 35a Outer peripheral edge 37 Crosspiece member

Claims (7)

A rotation axis;
First and second frame members provided opposite to each other at different positions in the axial direction, are extended along the axial direction between the first and second frame members, and have a predetermined interval in the circumferential direction. A handling cylinder frame having a plurality of crosspiece members disposed as
A plurality of teeth handling teeth attached to the crosspiece;
A plurality of cover bodies, which are detachably attached to the handling cylinder frame, and are made of a plate that covers an opening between the crosspiece members at a position on the inner diameter side of the outer peripheral edges of the first and second frame members. The
A handling cylinder characterized by that. The cross-sectional shape when viewed from the axial direction is a polygonal shape with the crosspiece member as a vertex,
The handling cylinder according to claim 1. The first and second frame members are plate members to which the crosspieces are attached to surfaces facing each other,
The crosspiece member has a mounting surface to which the teeth are attached, and a tooth handling consisting of a plate member having three surfaces: two bent surfaces bent in the same direction along a ridge line extending in the axial direction on both ends of the mounting surface. A mounting member and a cover body mounting seat that is integrally connected so as to block between the bent surfaces of the tooth handling mounting member, and a square pipe shape is formed by the tooth handling mounting member and the cover body mounting seat To
The handling cylinder according to claim 1 or 2. The cover body mounting seat has a cover body mounting surface that protrudes outward from each connection portion to which the two bent surfaces are connected, and that attaches the cover body on both sides of the tooth handling mounting member.
The handling cylinder of any one of Claims 1 thru | or 3. Each of the crosspiece members has a plurality of tooth treatment attachment portions arranged in the axial direction at a predetermined pitch, and one end side tooth treatment attachment portion provided at one end of the plurality of tooth treatment attachment portions. The first distance from the other end of the crosspiece member to the one end of the crosspiece is greater than the second distance from the other end side tooth-mounting attachment provided at the other end to the other end of the crosspiece Formed to be large,
The plurality of crosspieces are arranged so that the positions of the one end and the other end are alternately opposite.
The handling cylinder according to any one of claims 1 to 4. The cover body is formed by bending toward the inner diameter side.
The handling cylinder according to any one of claims 1 to 5.   The general purpose combine which mounts the handling cylinder of any one of Claims 1 thru | or 6.

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