JP5174059B2 - Whole grain input combine harvester - Google Patents

Description

  The present invention includes a shaft support member that rotatably supports a central axis of a handling cylinder on each of a front wall body and a rear wall body that form a handling chamber, and the rear end of the handling cylinder has the rear end. The front wall body and the rear wall body are laid in the front-rear direction so as to be close to the rear wall body, and the harvested cereal grains after the threshing process can be discharged from the handling room at the rear lower part of the handling room. The present invention relates to a threshing grain discharge structure of a whole-throw-in type combine harvester that forms an outlet.

  In the all-throw-in type combine, the rear end of the handling cylinder is brought close to the rear wall body, so that the harvested cereal grains after the threshing treatment (hereinafter referred to as the threshing grain meal) between the handling cylinder and the rear wall body. Is effectively suppressed, thereby preventing the occurrence of inconvenience that the threshing cereal enters between the rear end and the rear wall of the barrel and winds around the central axis of the barrel. .

  In such a full throw type combine, conventionally, the entire wall area of the rear wall is formed as a flat surface so that the entire rear wall is close to the rear end of the handling cylinder in the front-rear direction. (For example, refer to Patent Document 1).

JP 2008-167686 A

  With the above configuration, when harvesting crops with a long culm length, the threshing cereal culm that moves to the top of the culling port and flows down toward the culling port with the rotation of the barrel is used to move the teeth upward. If it gets caught, even if the shattered cereals are detached from the toothed teeth in the centrifugal direction due to centrifugal force or gravity, the rear wall close to the rear end of the barrel will move away from the moving area of the toothshed such as the shattered cereals. Since the backward movement is limited, a phenomenon such that the tooth cannot be separated from the tooth movement movement region and is caught again by the tooth treatment is likely to occur. For this reason, threshing cereals and the like are likely to stay in the region above the throat and cause inconveniences that adversely affect the discharge of threshing cereals and the like from the throat.

  An object of the present invention is to enable smooth discharge of threshing cereals and the like from a discharge port even when a crop having a long culm length is harvested.

In the first problem-solving means of the present invention, each of the front wall body and the rear wall body forming the handling chamber is provided with a shaft support member that rotatably supports the central axis of the handling cylinder, and the handling cylinder is The handling chamber of the harvested cereal grains after the threshing treatment is installed in the rear lower part of the handling chamber so that the rear end of the handling barrel is close to the rear wall so as to be close to the rear wall. In the whole grain input combine threshing grain culm discharge structure that has formed a culling port that enables the discharge from
At least outside of the ascending rotation locus drawn by the tip of the tooth handle when the plurality of tooth teeth protruding from the handle cylinder in the entire wall surface region of the rear wall body move upward, than the rotation center of the handle cylinder. Set the area located on the lower side as an overhanging area that projects backward, and form a bottomless rearward overhanging section that projects the overhanging area backward in the rear wall body,
And the said rear wall body is formed so that the area | region which arrange | positions the said shaft support member of the said all wall surface area may be located in the front side rather than the said overhang | projection area | region, and may adjoin the rear end of the said handling cylinder. .

  According to this problem-solving means, even if the threshing cereals that move up to the evacuation port and flow down toward the evacuation port with the rotation of the barrel are caught by the rising tooth-handling tooth, When a cocoon or the like is detached from the tooth treatment in the centrifugal direction due to centrifugal force or gravity, it is greatly moved backward from the tooth treatment movement area (lower side in the threshing treatment direction) due to subsequent threshing cereals that move to the lower side in the threshing treatment direction. It is pushed out into the rearward projecting part that comes off, and flows down toward the drainage port without being affected by the upwardly moving teeth.

  As a result, even when harvesting crops with a long culm length, it is possible to smoothly discharge threshing cereal culm from the culling port.

  In addition, at least the region where the shaft support member is arranged in the entire wall surface region of the rear wall body is located on the front side of the overhanging region and is close to the rear end of the treatment barrel, so that the threshing cereals can be placed behind the treatment barrel. It is possible to prevent entering between the end and the rear wall body and wrapping around the central axis of the handling cylinder.

In the second problem solving means of the present invention, in the first problem solving means,
The rear wall body is provided with a disk-shaped winding prevention member that is fitted around the rear end of the handling cylinder and prevents the harvested cereal rice cake from being wound around the central axis.
The overhanging region is set to a region located on the lateral outer side of the entire wall surface region on the side where the teeth are moved upward relative to the wrapping preventing member and below the upper end of the pivot support member. .

  According to this problem solving means, threshing cereals that have passed through the upwardly moving toothpaste are also moved backward (threshing process) by the subsequent threshing cereals that move to the lower side of the threshing process direction. It is pushed into the rearwardly projecting part that is greatly disengaged in the direction of the lower side of the direction, and flows down toward the drainage port without being affected by the tooth moving upward.

  As a result, it is possible to more smoothly discharge threshing cereals and the like from the outlet when harvesting crops having a long culm length.

In the third problem solving means of the present invention, in the first or second problem solving means,
The backward projecting portion is formed in a rectangular shape in the front-rear direction including the projecting region.

  According to this problem-solving means, for example, the space where the rearward overhanging portion is wider than the overhanging region is compared with the case where the rearward overhanging portion is partially curved along the ascending rotation locus drawn by the tip of the upwardly moving teeth handling tooth. It can be formed easily while ensuring.

  That is, while simplifying the configuration, even when harvesting crops with a long culm length, it is possible to smoothly discharge shed cereal culm from the culling port.

According to a fourth problem solving means of the present invention, in the first problem solving means,
Forming the rear wall body such that its lower edge is located above the lower end of the rotation locus drawn by the tip of the tooth-handling;
The overhang region is set to a region located laterally outside the intersection of the lower edge of the rear wall body and the ascending rotation locus in the entire wall surface region.

  According to this problem solving means, in the region located laterally outside the intersection of the lower edge of the rear wall body and the rising rotation trajectory drawn by the tip of the tooth moving upwardly moving, it is detached from the toothed tooth in the centrifugal direction by centrifugal force or gravity. Threshing cereals that have passed through the tooth movement that moves up and down, etc., and the subsequent threshing cereals that move to the lower side of the threshing processing direction, etc. It is pushed into the rearward projecting part that is greatly disengaged (lower side) and flows down toward the drainage port without being affected by the upwardly moving teeth.

  In other words, even when crops with a long culm length are harvested, more threshing cereal culm and the like can be smoothly discharged from the culling port.

According to a fifth problem solving means of the present invention, in the first problem solving means,
The overhang area is set to an area located outside the rotation locus drawn by the tip of the tooth handling in the entire wall surface area.

  According to this problem solving means, the threshing cereals and the like that have been detached from the tooth treatment in the centrifugal direction by centrifugal force or gravity move to the lower side in the threshing processing direction in the region located outside the rotation locus drawn by the tip of the tooth treatment. By the subsequent threshing cereal etc., it is pushed out to the inside of the rearward overhanging part that is greatly disengaged from the movement area of the tooth treatment rearward (lower side of the threshing treatment direction), and it is not affected by the tooth movement that moves upward Flow down toward

  As a result, even when crops with a long culm length are harvested, more shed cereal culm and the like can be discharged smoothly from the culling port.

According to a sixth problem solving means of the present invention, in the first problem solving means,
The rear wall body is provided with a disk-shaped winding prevention member that is fitted around the rear end of the handling cylinder and prevents the harvested cereal rice cake from being wound around the central axis.
The said overhang | projection area | region is set to the area | region located outside the said winding prevention member among the said whole wall surface area | regions.

  According to this problem solving means, in the region located outside the wrapping prevention member, the threshing cereals that have slipped through the teeth that have been moved upward, such as the threshing cereals that have been separated from the toothing by the centrifugal force or gravity. Etc. are pushed and moved upward by the rearward overhanging part, which is greatly disengaged backward (from the lower side of the threshing process direction) from the tooth movement area due to the subsequent threshing cereals that move to the lower side of the threshing process direction, etc. It flows down toward the drainage port without being affected by the tooth handling.

  As a result, even when crops with a long culm length are harvested, more shed cereal culm and the like can be discharged smoothly from the culling port.

It is the whole left side view of the all-throw-in type combine. It is a whole top view of a full throwing type combine. It is a vertical left side view of a threshing apparatus. It is a vertical rear view of a threshing apparatus. It is a partially longitudinal rear view of a threshing apparatus. It is a vertical right side view of the rear part of a threshing part. It is a cross-sectional top view of the rear part of a threshing part. It is a partially longitudinal rear view of a threshing device showing an overhang area in another embodiment [6]. It is a partially longitudinal rear view of the threshing device showing the overhang region in another embodiment [7]. It is a partially longitudinal rear view of the threshing device showing the overhang region in another embodiment [8]. It is a partially longitudinal rear view of the threshing device showing the overhang region in another embodiment [9]. It is a partially longitudinal rear view of a threshing device showing an overhang area in another embodiment [10]. It is a partially longitudinal rear view of a threshing device showing an overhang area in another embodiment [11]. It is a partially longitudinal rear view of a threshing device showing an overhang area in another embodiment [12]. It is a partially longitudinal rear view of the threshing device showing the overhang region in another embodiment [13].

  Hereinafter, an example of the form for implementing the threshing grain discharge structure of the whole grain input type combine which concerns on this invention is demonstrated based on drawing.

  As shown in FIGS. 1 and 2, the full throw-in type combine combines a plurality of steel materials such as a square pipe material to form a vehicle body frame 1, and a boarding operation unit 2 in the front right side region of the vehicle body frame 1. Is formed. A pair of left and right crawler type traveling devices 3 are provided at the lower part of the body frame 1. At the front end on the left side of the vehicle body frame 1, a cutting and conveying unit 4 that harvests and conveys crop cereals such as paddy rice and wheat that are located in front of the vehicle body during work traveling is supported by a left-right first axis P <b> 1. It is connected so that it can be moved up and down. The left half of the vehicle body frame 1 receives the harvested corn straw (hereinafter referred to as the harvested grain straw) conveyed by the harvesting and conveying unit 4 and performs a threshing process, and sorts the processed product obtained by the threshing process. The threshing device 5 for performing the above is mounted. On the right rear portion of the vehicle body frame 1, a bagging device 7 that stores the single-grained grains carried out from the threshing device 5 by the lifting screw 6 and enables the bagging into the bag is mounted.

  The boarding operation unit 2 includes a control lever 9 and the like on a front panel 8 erected on the front end portion thereof. A side panel 10 erected at the left end portion of the boarding operation unit 2 is provided with a main transmission lever 11 and an auxiliary transmission lever 12. A driver's seat 13 is provided in the rear part of the boarding driver 2. The control lever 9 functions as an operating tool for steering the vehicle body when swinging in the left-right direction, and functions as an operating tool for raising and lowering the cutting and conveying unit when swinging in the front-rear direction.

  The left and right crawler type traveling devices 3 are configured to switch between a straight traveling state in which they operate at a constant speed and a turning state in which they are differentially operated based on a swinging operation of the control lever 9 in the left-right direction.

  As the vehicle body travels, the harvesting and transporting unit 4 separates uncut cereals into harvested cereals and unharvested cereals by means of dividers 14 provided at the left and right ends of the front part. Further, the rotary reel 15 disposed above the front part of the cutting and conveying unit 4 is raked back with the tip of the harvested grain culm facing backward, and the harvesting target is harvested by the clipper type cutting device 16 provided at the bottom of the cutting and conveying unit 4. Cut the grain side of the grain and harvest the harvested grain. Then, the harvested cereals (hereinafter referred to as the harvested cereals) are gathered together at a predetermined position in the left-right direction and fed backwards by the auger 17 disposed behind the cutting mechanism 16 so that the threshing apparatus 5 extends from the predetermined position. The harvested cereal meal is supplied to the threshing device 5 by a scraping and conveying feeder 18 installed on the threshing device 5.

  The lifting / lowering swinging of the cutting and conveying unit 4 is performed by an expansion / contraction operation of a hydraulic lifting cylinder 19 installed over the body frame 1 and the feeder 18. The elevating cylinder 19 is configured to expand and contract based on a swinging operation of the control lever 9 in the front-rear direction. That is, cutting height adjustment for changing the height position of the cutting mechanism 16 relative to the uncut grain cereal can be performed by swinging the control lever 9 in the front-rear direction to extend and retract the lifting cylinder 19.

  As shown in FIGS. 1 to 7, the threshing device 5 includes a threshing unit 5 </ b> A that performs a threshing process on the harvested cereal straw supplied by the feeder 18, and a sorting unit 5 </ b> B that performs a sorting process on a processing object to be sorted obtained by the threshing process. , And a recovery unit 5C for recovering the processing object to be recovered obtained by the sorting process.

  The threshing unit 5A is configured by arranging a bar-type handling cylinder 21 in the handling chamber 20 formed in the upper part of the threshing device 5 so as to rotate counterclockwise as viewed from the rear with the second axis P2 facing forward and backward. It is. At the front lower part of the handling chamber 20, a supply port 22 is formed that enables supply of the harvested cereal meal that has been scraped and conveyed by the feeder 18 to the handling chamber 20. In the lower rear portion of the handling chamber 20, a drainage port 23 is formed that enables the harvested cereal mash after threshing (hereinafter referred to as threshing cereal mash) to be discharged from the handling chamber 20. The handling chamber 20 has a front support plate 24 and a rear support plate 25 that support the handling cylinder 21, an upper cover 26 that covers the upper part of the handling cylinder 21 from above, and a U-shape in front-rear direction that covers the handling cylinder 21 from below. A partition is formed by a receiving network 27 or the like.

  The sorting section 5B is provided with a swing sorting mechanism 29 that is sorted and swung in the front-rear direction when the eccentric cam type drive mechanism 28 provided at the rear end is operated. Further, a red pepper 30 that generates a sorting wind by rotating counterclockwise in the left side view with the third axis P3 facing left and right as a fulcrum is disposed in front of and below the swing sorting mechanism 29. The swing sorting mechanism 29 receives the processed material leaked from the receiving net 27 while performing the screening swinging, and screens the received processed product as the target processed product. The Kara 30 supplies the processed air leaked from the receiving net 27 to the processed material leaked from the receiving net 27 and the processed material leaked through the swinging selection mechanism 29, and these processed products are processed objects to be selected. As wind sorting.

  The collection unit 5 </ b> C is formed with a first collection unit 31 below the upper side in the sorting direction of the swing sorting mechanism 29. In addition, a second recovery portion 32 is formed below the lower side of the sorting direction of the swing sorting mechanism 29. The first recovery part 31 is formed in a bottom-squeezed shape when viewed from the side, and guides the single grain that has leaked from the upper side in the selection direction of the swinging selection mechanism 29 to flow down to the bottom as the first item. At the bottom of the No. 1 recovery part 31, a No. 1 screw 33 for carrying out No. 1 objects is arranged in the left-right direction, and the No. 1 thing that has flowed down to the bottom of the No. 1 recovery part 31 is provided by the No. 1 screw 33. The first screw 33 is conveyed to the lifting screw 6 connected to the right end of the screw 33. The No. 2 collection part 32 is formed in a bottom-constricted shape when viewed from the side, and guides the grain with branches and the like that has leaked from the lower side of the sorting direction of the swing sorting mechanism 29 to the bottom as the second item. At the bottom of the second collection part 32, a second screw 34 for unloading the second thing is arranged in the left-right direction. With this second screw 34, the second thing that has flowed down to the bottom of the second collection part 32 is placed. It is transported to a second reduction mechanism 35 connected in communication with the right end of the second screw 34.

  The second reduction mechanism 35 includes a reprocessing unit (not shown) that re-threshs the second item conveyed by the second screw 34, and lifts the second item after the threshing process by the reprocessing unit. To the swing sorting mechanism 29.

  As shown in FIGS. 3 to 7, the handling cylinder 21 rotates about the second axis P <b> 2, which is the center of the center axis 36, with the center axis 36 extending between the front support plate 24 and the rear support plate 25. The scraping portion 37 and the handling processing portion 38 are provided on the central shaft 36 so as to rotate integrally around the second axis P2.

  The scraping portion 37 includes a barrel portion 39 formed in a truncated cone shape, and two helical teeth 40 are welded to the outer peripheral surface of the barrel portion 39. As a result, the scraping portion 37 rotates counterclockwise in the rear view with the second axial center P <b> 2 facing in the front-rear direction as a fulcrum, so that the whole harvested cereals conveyed by the feeder 18 are moved by the two helical teeth 40. The supply port 22 is scraped into the inside of the handling chamber 20 and is supplied to the handling processing space S1 between the handling processing unit 38 and the receiving net 27. A disc-shaped front wall member 41 is welded to the end of the trunk portion 39 on the short diameter side so that the centers thereof coincide.

  The handling processing unit 38 includes a first middle wall member 42, a second middle wall member 43, and a rear wall member 44 formed in a disk shape. These wall members 42 to 44 are welded to the central shaft 36 in a state where they are arranged at a set interval in the front-rear direction around the second axis P2. A plurality of (for example, six) tooth-handling support members 45 are arranged on the outer peripheral portions of these wall members 42 to 44 in a front-and-rear orientation along the central axis 36 and are equidistant from the central axis 36. In such a state, they are connected so as to be arranged at regular intervals in the circumferential direction of the handling cylinder 21. Each tooth-supporting member 45 is provided with a plurality of tooth-handlings 46 so as to protrude outward from the tooth-handling support member 45 toward the outside of the treatment drum 21 so as to be arranged at a set interval in the front-rear direction. is there. As the tooth handling support member 45, a rod-shaped member such as a round bar steel material, a square bar steel material, a square pipe steel material, an angle material, or a channel material can be employed. For each tooth 46, a rod-shaped member such as a round bar steel material, a square bar steel material, a round pipe material, or a square pipe material can be employed.

  That is, the handling processing unit 38 has a bowl-like shape having an internal space S2 communicating with the handling processing space S1 between the receiving network 27 and a plurality of handling teeth 46 projecting outward. 38 are arranged in a state of being arranged with a set interval in the circumferential direction and the front-rear direction.

  As a result, the handling processing unit 38 rotates counterclockwise in the rear view with the second axis P2 facing forward and backward as a fulcrum, thereby handling the harvested cereal rice cake located in the handling processing space S1 with the receiving net 27. The threshing process is performed by hitting the tooth support member 45 and the tooth handling 46, or the tooth handling 46 being swallowed, and the processed material obtained by the threshing process is allowed to enter the internal space S2, and the processed product in the handling process space S1. And the processed material in the internal space S2 are subjected to a threshing process by striking the tooth-handling support member 45 and the tooth-handling 46, or biting the tooth-handling 46, while stirring the processed material.

  And by providing internal space S2, even if it is a case where a lot of harvested cereals are supplied to handling room 20, since internal space S2 can be used for processing space for threshing processing, the processing thing in processing space Can be avoided and saturation of the processing space can be avoided. As a result, the processed material leaks from the receiving net 27 without performing sufficient threshing processing due to stagnation of the processed material or saturation of the processing space, or the load required for the threshing processing increases and the handling cylinder 21 increases. It is possible to avoid inconveniences such as damage to the transmission system.

  In addition, not only the plurality of tooth handling teeth 46 but also the six tooth handling support members 45 function as a handling member that acts on the processed material in the handling chamber, so that the threshing performance and the threshing efficiency can be improved. it can.

  The first middle wall member 42 is welded to the central shaft 36 so as to be positioned at the front end of the handling portion 38, and is scraped together with one end portion of each tooth handling support member 45 on the outer peripheral portion of the first middle wall member 42. The rear end of the insertion portion 37 is bolted. The second intermediate wall member 43 is welded to the central shaft 36 so as to be positioned at the front and rear intermediate portions of the handling processing portion 38, and the front and rear intermediate portions of the respective tooth handling support members 45 are disposed on the outer peripheral portion of the second intermediate wall member 43. Are connected with bolts. The rear wall member 44 is welded to the center shaft 36 so as to be positioned at the rear end of the handling processing portion 38, and the other end portion of each tooth handling support member 45 is bolted to the outer peripheral portion of the second middle wall member 43. It is.

  Each tooth-supporting member 45 is configured to be changeable in a normal posture in which the front-rear direction coincides with the front-rear direction of the treatment barrel 21 and an inverted posture in which the front-rear direction is opposite to the front-rear direction of the treatment barrel 21. It is. Then, the first and second middle wall members 42 and 43 and the rear wall member 44 are bolted so that the front and rear directions of the adjacent tooth handling support members 45 are reversed.

  Each tooth handling 46 is positioned so as to be displaced by a half pitch in the front-rear direction from the tooth handling 46 of the adjacent tooth handling support member 45 when the front and rear directions of the adjacent tooth handling support members 45 are reversed. Is set up.

  As shown in FIG. 3, the front lower portion of the handling chamber 20 receives the harvested cereal meal supplied to the supply port 22, and assists the raking supply to the handling processing space S <b> 1 of the harvested grain meal by the raking unit 37. An auxiliary plate 47 is provided.

  As shown in FIGS. 3 to 7, the receiving net 27 is a concave receiving net formed in a lattice shape. The receiving net 27 receives the harvested cereal mash supplied to the handling space S <b> 1 between the receiving cylinder 21 and the handling cylinder 21. Assists the threshing process by rotation, and leaks the cerealed grains, the grain with branch stems, or the sawdust generated by the threshing process toward the swinging selection mechanism 29 below. On the other hand, leakage to the oscillating sorting mechanism 29, such as threshing cereals, is prevented.

  The upper cover 26 has a front wall plate 49 welded to the front end of the top plate 48 provided with a curved portion 48 </ b> A that is curved so that the left and right central sides are positioned upward, and the rear wall plate 50 is welded to the rear end of the top plate 48. Configured. And by connecting the left end portion 48B of the top plate 48 to a fixed frame 51 of a threshing device 5 configured by connecting a plurality of steel materials such as a square pipe material through a plurality of hinges 52, a fourth front-to-back direction is provided. An opening / closing operation with the axis P4 as a fulcrum is made possible. The right end 48 </ b> C of the top plate 48 is provided with a plurality of fixtures 53 that fix the upper cover 26 in a closed posture by being screwed to the fixing frame 51. In the curved portion 48A, the processed product and the threshing cereal that have moved to the upper part of the handling chamber 20 as the handling cylinder 21 rotates counterclockwise as viewed from the rear with the second axis P2 facing forward and backward as a fulcrum. Are arranged so as to be arranged at a set interval in the front-rear direction.

  The front support plate 24 is welded to the upper portion of the front end of the fixed frame 51 so as to receive the front wall plate 49 of the upper cover 26 that has been closed. The rear support plate 25 is welded to the upper rear end portion of the fixed frame 51 so as to receive the rear wall plate 50 of the upper cover 26 that has been closed. The front wall plate 55 and the front wall plate 49 of the upper cover 26 constitute a front wall body 55, and the rear support plate 25 and the rear wall plate 50 of the upper cover 26 constitute a rear wall body 56.

  A recess (not shown) that allows insertion from above the central shaft 36 of the handling cylinder 21 is formed in the left and right central portions of the front support plate 24 by notching from the upper end to the central portion. At the center portion of the front support plate 24, a shaft support member 57 that rotatably supports the center shaft 36 and a front wall member 41 of the handling cylinder 21 are externally fitted to prevent the harvested cereal rice cake from being wound around the center shaft 36. The disc-shaped winding preventing member 58 is connected together by fastening.

  In the left and right central portion of the rear support plate 25, a recess 25A that allows insertion from above the central shaft 36 of the handling cylinder 21 is formed by cutting out from the upper end to the central portion. At the central portion of the rear support plate 25, a shaft support member 59 that rotatably supports the center shaft 36 and a rear wall member 44 of the handling cylinder 21 are externally fitted to prevent the threshing cereal from being wound around the center shaft 36. The disk-shaped anti-winding member 60 is connected together.

  The front shaft support member 57 is a transmission case having a bearing (not shown) for supporting the central shaft 36 and a bevel gear (not shown) for transmission to the central shaft 36 therein. The rear shaft support member 59 is a bearing holder that supports the central shaft 36 via a bearing (not shown) provided therein.

  A front wall member 41 provided at the front end of the handling cylinder 21 is fitted into the front-side winding preventing member 60 in the vicinity of the front wall body 55, and a rear wall member 44 provided at the rear end is provided in the rear wall body. 56 is disposed in the handling chamber 20 in a state of being laid over the front wall body 55 and the rear wall body 56 so as to be fitted in the winding preventing member 60 on the rear side in the vicinity of 56.

  The supply port 22 is formed so that the scraping portion 37 of the handling cylinder 21 faces between the first support wall member 61 that supports the front end portion of the receiving net 27 in the front lower portion of the handling chamber 20 and the front wall body 55. It is. The discharge port 23 is a rear end portion of the handling section 38 in the handling cylinder 21 between the second support wall member 62 that supports the rear end portion of the receiving net 27 in the rear lower portion of the handling chamber 20 and the rear wall body 56. Is formed to face.

  As shown in FIGS. 1 to 3 and FIGS. 5 to 7, at the lower end of the rear end of the threshing device 5, a sheet metal excretion cover 63 is provided so as to cover the excretion port 23 from the rear. The waste cover 63 is welded to the left and right side plates 64 connected to the fixed frame 51 with the lid plate 65 bent so as to include the top plate portion 65A, and the cereal cereals that have flowed out of the waste port 23 are It is formed so as to be guided downward together with swarf and the like carried out to the rear of the swing sorting mechanism 29 by sieving and wind sorting, and discharged to the outside from a discharge port 66 formed in the lower part.

  As shown in FIGS. 3 to 7, the rear support plate 25 is formed such that its lower edge 25 a is positioned above the lower end of the rear-side anti-winding member 60. In the lower right portion of the rear support plate 25, a rectangular concave portion 25B is cut out from the right end and the lower end of the rear support plate 25 inward in the front-rear direction, and a sheet metal cover that covers the concave portion 25B from the rear is formed. The member 67 is welded. The cover member 67 is bent and formed so as to have a rectangular lid plate portion 67A facing the concave portion 25B, a top plate portion 67B extending forward from the lid plate portion 67A, and left and right side plate portions 67C and 67D. It is. Accordingly, a bottomless rearward projecting portion 56A that projects rearward in a rectangular shape in the front-rear direction is provided at the lower right portion of the rear wall body 56.

  In the recess 25B and the cover member 67, the position of the left edge 25b of the recess 25B and the left side plate portion 67C of the cover member 67 is such that the lower edge 25a of the rear support plate 25 and the outer peripheral edge 60a of the rear anti-winding member 60 are located. In other words, the left end edge 25b of the recess 25B and the cover member so as to substantially coincide with the position of the intersection Pb on the right side (the side on which the tooth handle 46 moves upward) of the two intersecting points Pa and Pb. 67 is set so that the left side plate portion 67 </ b> C of the 67 is positioned closer to the rotation center (second axis P <b> 2) of the handling cylinder 21 than the right end of the anti-winding member 60. It is formed so as to have a space that enters the rotation center side (left side) of the handling cylinder 21 from the right end of the member 60. Further, the positions of the upper end edge 25c of the recess 25B and the top plate portion 67B of the cover member 67 are set so as to substantially coincide with the position of the upper end 59a of the shaft support member 59 in the front-rear direction.

  That is, at least the center of rotation (second axis) P2 of the handling cylinder 21 outside the ascending rotation locus Ka drawn by the tip of the handling tooth 46 when the handling tooth 46 of the entire wall surface area of the rear wall 56 moves upward. Including a first region Aa positioned on the lower side from the rotation center P2 of the handle cylinder 21 outside the ascending rotation locus Ka drawn by the tip of the handle 46, which is an example of a region positioned below the rear wall, and the rear wall The second region located on the outer right side of the entire wall surface region of the body 56 from the vicinity of the upper end 59a of the shaft support member 59 on the right outer side (the lateral outer side on the side on which the teeth 46 are moved up). A rectangular region (region in which the concave portion 25B is formed) straddling the ascending rotation locus Ka and the outer peripheral edge 60a of the anti-winding member 60 in the front-rear direction including substantially the entire Ab region is defined as an overhang region A that projects backward. By setting and forming the bottomless rearward projecting portion 56A, the handling cylinder The space portion S3a facing the overhanging area A in the front-rear direction of the discharge space S3 formed between the second support wall member 62 and the rear wall body 56 is spaced rearward from the rear end of the first rear end. It is extended to.

  Further, of the entire wall surface area of the rear wall body 56, the area other than the overhang area A (the area including the third area Ac in which the shaft support member 59 is provided) is formed on a flat surface, and the rear of the handling cylinder 21. The anti-winding member 60 provided on the rear wall body 56 is fitted on the rear end of the handling cylinder 21 so as to be close to the end.

  The rearwardly extending portion 56A communicates with the waste cover 63 via a recess 63A formed at the front upper end of the waste cover 63. The lower end of the rearwardly extended portion 56A is the front upper end of the waste cover 63. Connected. Further, at the lower end portion of the rear support plate 25, extending portions 25 </ b> C to 25 </ b> E that extend so as to close a region that does not communicate with the rearwardly extending portion 56 </ b> A in the concave portion 63 </ b> A of the evacuation cover 63 are formed.

  From the above-described configuration, the threshing cereals and sawdust that have moved up to the discharge space S3 with the counterclockwise rotation in the rear view using the second axial center P2 facing the front and rear of the handling cylinder 21 ascend and move. Even if it comes to be caught by 46, if it detaches from the tooth-handling 46 in the centrifugal direction by centrifugal force or gravity, the tooth-handling is caused by the subsequent threshing cereal meal or swarf that moves to the lower side in the threshing processing direction. 46, it is pushed into the rearwardly extending portion 56A that is largely disengaged rearward (lower side in the threshing processing direction) from the moving region 46, flows down from the rearwardly extending portion 56A to the inside of the waste cover 63, and the waste cover 63 It flows out to the exterior from the discharge port 66 formed in the lower part of the head.

  Further, since the rearwardly extending portion 56A is provided with the top plate portion 67B, the rearwardly extending portion 56A can be handled without being greatly disengaged rearward (lower side in the threshing processing direction) from the movement region of the handle 46. Even if shattered cereals or swarf or the like to be brought around with the teeth 21 is generated, the top plate portion 67B of the rearward projecting portion 56A receives the shattered cereals or swarf or the like, and is accompanied with the tooth handling 21. Since the rotation is prevented, it is possible to promote the downward flow of the threshing cereal and sawdust that are to be carried around with the tooth handling 21.

  That is, for example, when the entire wall surface region of the rear wall body 56 is formed as a flat surface and the entire rear wall body 56 is brought close to the rear end of the handling cylinder 21 in the front-rear direction, a crop with a long culm length is harvested. In this case, even if the threshing cereals and swarf that are caught by the ascending and moving tooth 46 are separated from the teeth 46 in the centrifugal direction due to centrifugal force or gravity, etc. Since the rear wall body 56 restricts the rearward movement of the moving region 46 from the moving region 46, the threshing grains and swarf separated from the toothed handle 46 in the centrifugal direction can be removed from the moving region of the treated tooth 46. However, the above-described embodiment is likely to cause inconvenience that threshing grains, swarf, and the like stay in the discharge space S3. Then, in the discharge space S3 Since the space portion S3a facing the region A is expanded rearward to make it difficult for the threshing slag and swarf to be caught by the handling teeth 46 that move upward, the threshed cereal in the discharge space S3 It is possible to prevent stagnation and scum from staying, and to promote the discharge of cereal cereals and swarf to the outside.

  Further, as in the case where the position of the rear wall body 56 is changed to the rear side, the overall length of the handling cylinder 21 is increased along with the change of the position of the rear wall body 56, or wrapping of the cereal cereals around the central shaft 36 is prevented. For this reason, it is possible to eliminate the need for major improvements such as increasing the front-rear length of the wrapping prevention member 60 on the rear side, so that the threshing device 5 can be prevented from becoming large and heavy.

    [Another embodiment]

[1] The whole-pile-type combine is configured to include a grain tank and a screw-type grain discharging device that enables the grain to be discharged from the grain tank, instead of the bagging device 7. It may be what you did. Moreover, you may equip with the shredding apparatus (chopper) which shreds the threshing grain mash which flowed down from the discharge port 23. FIG.

[2] The handling cylinder 21 may be a drum type constituted by mounting a helical tooth or a tooth handling tooth on the outer periphery of a cylindrical body member. Further, the handle teeth 46 provided at the rear end portion of the handle cylinder 21 facing the discharge port 23 are configured so that the protruding end side thereof has a receding angle located on the lower side of the handle cylinder rotation direction, and the handle cylinder 21 is configured. It may be configured to promote detachment of threshing cereals and the like from the tooth handling 46 provided at the rear end portion. Furthermore, it may be configured to rotate clockwise in the rear view with the second axial center P2 facing forward and backward.

[3] In the present invention, from the rotation center P2 of the handling cylinder 21 outside the ascending rotation locus Ka drawn by the tip of the handling tooth 46 when the handling tooth 46 of at least the entire wall surface area of the rear wall body 56 moves upward. The region located on the lower side is the rotation center P2 of the handling cylinder 21 outside the ascending rotation locus Ka drawn by the tip of the tooth handling 46 in the entire wall surface region of the rear wall 56 illustrated in the above embodiment. Is not limited to the first region Aa located below the shaft, and, for example, the shaft support member 59 outside the rising rotation locus Ka drawn by the tip of the tooth-handling 46 in the entire wall surface region of the rear wall 56. It may be a region located below or below the lower end from the lower end. Further, on the left and right side ends (right end in the above embodiment) of the rear wall body 56 located on the ascending rotation locus side from the ascending rotation locus Ka drawn by the tip of the tooth handling teeth 46 in the entire wall surface region of the rear wall body 56. It may be a region located on the lower side from the lower end of the shaft support member 59.

[4] One left and right end of the rear wall 56 located on the ascending rotation locus side from the ascending rotation locus Ka drawn by the tip of the tooth-handling 46 in the entire wall surface region of the rear wall body 56 (right end in the above embodiment). For example, the lateral side of the anti-winding member 60 located on the ascending rotation trajectory side of the entire wall surface region of the rear wall body 56 including the region located below the lower end of the shaft support member 59. From the end (right end in the above embodiment) to the left and right side ends (right end in the above embodiment) of the rear wall body 56 located on the ascending rotation locus side, the lower end of the shaft support member 59 extends downward. The region located in the region (region straddling the ascending rotation trajectory Ka as viewed in the front-rear direction) is set as the overhanging region A, and the bottomless rearward overhanging portion 56A projecting this region rearward is formed on the rear wall body 56. You may make it form.

[5] Ascending rotation trajectory Ka and ascending rotation of the rearward projecting portion 56A drawn by the distal end of the handle 46 at the left and right side ends (right end in the above embodiment) on the side away from the rotation center P2 of the handling cylinder 21 Positioned between the left and right side ends (right end in the above embodiment) of the rear wall body 56 located on the locus side, straddling the ascending rotation locus Ka or preventing the winding with the ascending rotation locus Ka in the front-rear direction. It may be formed in a rectangular shape straddling the outer peripheral edge 60a of the member 60.

[6] As shown in FIG. 8, the center of rotation of the handle cylinder 21 outside the rising rotation locus Ka drawn by the tip of the handle teeth 46 when the handle teeth 46 of the entire wall surface region of the rear wall 56 move upward. Only the first region Aa located below P2 is set as the overhanging region A, and a bottomless rearward overhanging portion 56A is formed on the rear wall body 56 by projecting only the first region Aa rearward. You may make it do.

[7] As shown in FIG. 9, the upper end of the shaft support member 59 is located on the right outer side (the lateral outer side on the side on which the tooth-handling 46 moves up) of the entire wall region of the rear wall body 56 with respect to the winding prevention member 60. A second region Ab (region including at least the first region Aa described above) located near the lower side of 59a (slightly below upper end 59a or slightly above upper end 59a) and below is set as an overhanging region A. A bottomless rearward projecting portion 56A in which only the second region Ab projects rearward may be formed on the rear wall 56.

[8] As shown in FIG. 10, the upper end of the shaft support member 59 is located on the right outer side (the lateral outer side on the side on which the tooth-handling 46 moves up) of the entire wall region of the rear wall body 56 with respect to the winding prevention member 60. A bottom area rearward in which a fourth area Ad (area including at least the first area Aa described above) located below 59a is set as an overhang area A, and only the fourth area Ad is projected backward. The projecting portion 56A may be formed on the rear wall 56.

[9] As shown in FIG. 11, the upper end of the shaft support member 59 is outside the ascending rotation locus Ka drawn by the tip of the tooth-handling 46 when the tooth-handling 46 in the entire wall surface region of the rear wall body 56 moves upward. A fifth region Ae (a region including at least the first region Aa described above) located below 59a is set as an overhanging region A, and only the overhanging region A is projected backward without bottom The projecting portion 56A may be formed on the rear wall 56.

[10] As shown in FIG. 12, the center of rotation of the handle cylinder 21 is located on the right outer side (the lateral outer side on the side on which the handle teeth 46 move up) of the entire wall area of the rear wall body 56 with respect to the wrapping preventing member 60. A sixth region Af (a region including at least the first region Aa described above) located on the lower side from P2 is set as the overhanging region A, and only the overhanging region A is protruded rearward and without bottom The projecting portion 56A may be formed on the rear wall 56.

[11] As shown in FIG. 13, the rotation locus K drawn by the lower edge 25a of the rear wall body 56 (lower edge of the rear support plate 25) and the tip of the tooth handle 46 in the entire wall surface area of the rear wall body 56. A seventh region Ag (region including at least the first region Aa described above) located on the right outside of the intersection Pc with the rising rotation locus Ka drawn during the upward movement is set as the overhanging region A. A bottomless rearward projecting portion 56 </ b> A in which the projecting region A projects rearward may be formed on the rear wall 56.

[12] As shown in FIG. 14, the eighth region Ah (including at least the first region Aa described above) located outside the rotation locus K drawn by the tip of the tooth-handling 46 in the entire wall surface region of the rear wall 56. The region) is set to the overhanging region A, and a bottomless rearward overhanging portion 56A in which the overhanging region A is overhanging backward may be formed in the rear wall body 56.

[13] As shown in FIG. 15, a ninth region Ai (region including at least the first region Aa described above) located outside the anti-winding member 60 in the entire wall surface region of the rear wall 56 is stretched. It may be set to the protruding area A, and a bottomless rearward protruding portion 56A in which the protruding area A is protruded rearward may be formed on the rear wall body 56.

[14] When the winding preventing member 60 is fitted into the rear wall member 44 provided at the rear end of the handling cylinder 21 to prevent the harvested cereal from being wound around the central shaft 36, the rear wall The entire or part of the region located outside the member 44 is set as the overhanging region A, and the bottomless rearward overhanging portion 56A that projects the overhanging region A rearward is formed on the rear wall body 56. You may make it form.

  The whole grain throwing type combine threshing grain discharge structure according to the present invention is a culling port in which a harvested grain culm after having been threshed by a handling cylinder such as a bar type or a drum type is formed in the rear lower part of the handling chamber. It can be applied to a full-throw-in type combine combiner configured to be discharged from

DESCRIPTION OF SYMBOLS 20 Handling chamber 21 Handling cylinder 23 Discharge port 36 Central axis 46 Teeth 55 Front wall body 56 Rear wall body 56A Backward extension part 57 Axial support member 59 Axial support member 59a Upper end 60 Anti-winding member A Overhang area Aa area (First area)
Ac region (third region)
Ad region (fourth region)
Ag region (seventh region)
Ah area (8th area)
Ai area (9th area)
K rotation locus Ka ascending rotation locus P2 rotation center Pc intersection

Claims (6)

Each of the front wall body and the rear wall body forming the handling chamber is provided with a shaft support member that rotatably supports the central axis of the handling cylinder, and the rear end of the handling cylinder is attached to the rear wall body. A drainage port that extends in the front-rear direction across the front wall body and the rear wall body so as to be close to each other, and that allows the harvested cereal grains after the threshing process to be discharged from the handling room at the lower rear part of the handling room. It is a threshing grain discharge structure of the formed all-throw-in type combine,
At least outside of the ascending rotation locus drawn by the tip of the tooth handle when the plurality of tooth teeth protruding from the handle cylinder in the entire wall surface region of the rear wall body move upward, than the rotation center of the handle cylinder. Set the area located on the lower side as an overhanging area that projects backward, and form a bottomless rearward overhanging section that projects the overhanging area backward on the rear wall body,
And the said rear wall body is formed so that the area | region which arrange | positions the said shaft support member of the said all wall surface area may be located in the front side rather than the said overhang | projection area | region, and may adjoin the rear end of the said handling cylinder. Whole grain input combine harvester. The rear wall body is provided with a disk-shaped winding prevention member that is fitted around the rear end of the handling cylinder and prevents the harvested cereal rice cake from being wound around the central axis.
The overhanging region is set to a region located on the lateral outer side of the entire wall surface region on the side where the teeth are moved upward relative to the wrapping preventing member and below the upper end of the pivot support member. The whole grain throwing type combine shed grain shed discharge structure according to claim 1.   The whole grain throwing type combine shed cereal discharge structure according to claim 1 or 2, wherein the backward projecting portion is formed in a rectangular shape in the front-rear direction including the projecting region. Forming the rear wall body such that its lower edge is located above the lower end of the rotation locus drawn by the tip of the tooth-handling;
The all overhangs according to claim 1, wherein the overhang area is set to an area located laterally outside an intersection of the lower edge of the rear wall body and the rising rotation locus in the entire wall surface area. Drainage cereal discharge structure of input type combine.   2. The whole grain throwing type combine shed grain shed discharging structure according to claim 1, wherein the overhanging area is set to an area located outside a rotation locus drawn by a tip of the tooth handling in the entire wall surface area. . The rear wall body is provided with a disk-shaped winding prevention member that is fitted around the rear end of the handling cylinder and prevents the harvested cereal rice cake from being wound around the central axis.
2. The whole grain throwing type combine shed grain shed discharging structure according to claim 1, wherein the overhanging area is set to an area located outside the winding preventing member in the entire wall surface area.

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