JP2007175000A - Separation structure of threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform simplification of constitution and reduction of cost by reducing components of a crude separation part. <P>SOLUTION: In a separation structure of a threshing apparatus equipped with a swinging separation mechanism 19 for receiving a treated material leaked down from a receiving net 17, accompanied by threshing treatment and carrying out separation treatment of the treated material, the crude separation part 31 of the swinging separation mechanism 19 is constituted of a separation plate 54 in which a plurality of leak-down ports 54B are formed by embossing a plurality of separation pieces 54A in upward scaly state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sorting structure of a threshing apparatus provided with a rocking sorting mechanism that receives and sorts a processed material leaked from a receiving net along with a threshing process.

In the sorting structure of the threshing device as described above, a chaff sheave configured by arranging and arranging a large number of chaff flips made of steel strips at a predetermined interval in the front-rear direction is arranged at the upper front-rear intermediate position of the swing sorting mechanism. It is generally used as a rough sorting unit that is used (see, for example, Patent Documents 1 and 2).
JP 2005-102506 A JP-A-10-201343

  According to the above configuration, since the number of parts constituting the coarse selection unit is large, the configuration is complicated and the cost is increased.

  An object of the present invention is to reduce the number of components of the rough sorting section so that the configuration can be simplified and the cost can be reduced.

  In the invention according to claim 1 of the present invention, in the sorting structure of the threshing apparatus provided with the rocking and sorting mechanism for receiving and sorting the processed material leaked from the receiving net in accordance with the threshing processing, the rocking The rough sorting part of the sorting mechanism is constituted by a sorting plate in which a plurality of sorting pieces are punched upwards to form a plurality of leakage openings.

  According to this configuration, since the coarse sorting unit can be configured by a single or a plurality of sorting plates, when the coarse sorting unit is configured by arranging and arranging a large number of char flips made of strip steel plates at regular intervals in the front-rear direction. Compared to the above, it is possible to greatly reduce the components of the coarse sorting section, and accordingly, the configuration can be simplified and the cost can be reduced.

  Also, in the sieve sorting process by the operation of the swing sorting mechanism, the sorting product comes into contact with each sorting piece, and the sieve is appropriately sieved in the left-right direction and the up-down direction while the conveyance to the lower side in the conveyance direction is moderately suppressed. As a result of the separation, it becomes possible to satisfactorily screen the sorted product, and the sorting accuracy of the sorted product is improved.

  Therefore, it is possible to improve the sorting accuracy while simplifying the configuration of the coarse sorting unit of the swing sorting mechanism and reducing the cost.

  According to a second aspect of the present invention, in the invention according to the first aspect, the sorting pieces located at the left and right end portions of the coarse sorting portion are formed in a short length.

  According to this structure, the conveyance suppression effect with respect to the sorting processed product by the sorting pieces at the left and right end portions where the sorting processing product easily accumulates in the coarse sorting portion is reduced, and the leakage of the grains and the like from the leak holes at the left and right end portions is reduced. Therefore, the occurrence of No. 3 loss, in which the grain is not leaked from the leak outlets at the left and right ends and is released to the outside of the vehicle together with the sawdust, etc., is reduced, and the left and right ends of the coarse sorting portion The reduction in the sorting efficiency due to the deposition of the sorting process product at the is suppressed.

  Therefore, the grain collection efficiency and the selection efficiency can be improved by making a simple improvement by simply forming the selection pieces at both the left and right ends of the coarse selection part short.

  According to a third aspect of the present invention, in the invention according to the first or second aspect, the leakage port is formed in a rectangular shape.

  According to this structure, each leakage opening of the sorting plate formed by the punching of the sorting pieces is formed in a rectangular shape larger than the sorting pieces punched in a scale shape, and leakage from each leakage opening such as a grain is prevented. Because it is promoted, the occurrence of No. 3 loss that kernels are not leaked from each leakage port of the sorting plate and released to the outside of the vehicle together with sawdust etc. is reduced, and the sorting processed product on the sorting plate Decrease in sorting efficiency due to the retention of is suppressed.

  Therefore, it is possible to improve the sorting efficiency and the grain recovery efficiency by making a simple improvement by simply forming each leakage opening of the sorting plate into a rectangular shape.

  In the invention according to claim 4 of the present invention, in the invention according to any one of claims 1 to 3, the plurality of sorting pieces are arranged between the sorting pieces in the front row. They are arranged in a staggered pattern so as to be positioned.

  According to this configuration, in the sieve sorting process by the operation of the swing sorting mechanism, the sorting processed material on the sorting plate comes into contact with the plurality of sorting pieces arranged in a staggered manner in the front, rear, left, and right sides, and the lower side in the transport direction While being moderately restrained from being transported to the left and right, it is evenly distributed in the left-right direction, and the leakage of grains and the like from each leakage outlet is promoted. The occurrence of the third loss that is released outside the vehicle together with the sawdust and the like without leaking from the lower port is reduced, and the reduction of the sorting efficiency due to the retention of the sorting processed product on the sorting plate is suppressed.

  Therefore, the sorting efficiency and the grain recovery efficiency can be improved by forming a plurality of sorting pieces in a staggered pattern on the sorting plate in the front-rear and left-right directions.

  FIG. 1 shows an overall side view of an all-fired combine harvester that harvests rice, wheat, and the like, and this combine mounts an engine 2 and the like on a body frame 1 formed of square pipe steel or the like. In addition, a pair of left and right crawler type traveling devices 3 driven by the power from the engine 2 transmitted through a transmission (not shown) and the like are provided, and the planted cereal to be harvested is provided at the front of the body frame 1. The reaping and transporting device 4 for slashing and transporting it backwards is connected so as to be able to swing up and down, and the left half of the body frame 1 is subjected to a threshing process on the cereal cereal from the scouring and conveying device 4, and The threshing device 5 that performs a sorting process on the processed product obtained by the threshing process is mounted, and the grain from the threshing apparatus 5 is stored in the right half of the body frame 1 and the stored grain bag. Bagging device 6 that enables filling Mounted, it is constructed by forming a driver's section 7 in front portions of the bagging apparatus 6 of the body frame 1.

  The left and right crawler type traveling devices 3 are driven at a constant speed based on the swinging operation of the control lever 8 provided in the boarding operation unit 7 in the left-right direction, and thus the straight traveling state appears. It is comprised so that a turning state may appear by doing.

  As shown in FIG. 1 and FIG. 2, the cutting and conveying device 4 is configured such that the divider 9 provided at the front left and right ends of the vehicle body travels along with the planted culm that is to be harvested and the planted cereal that is not to be harvested. Rotating reel 10 deployed above the front part of the reeling machine 9 rakes up the planted cereal rice harvested by the left and right dividers 9 toward the rear, and cuts the clippers that are equipped at the bottom. The mechanism 11 cuts the planted side of the planted culm to be harvested, and the auger 12 deployed behind the cutting mechanism 11 converts the planted culm (cutted cereal) after cutting by the cutting mechanism 11 in the left-right direction. At the same time, the feeder 13 consisting of a conveyor conveys the cereals from the auger 12 toward the threshing device 5. Configured to carry Further, the threshing device 5 and the feeder 13 are expanded and contracted by a hydraulic lifting cylinder (not shown) installed over the body frame 1 and the feeder 13 based on the swinging operation of the control lever 8 in the front-rear direction. The swaying movement of the cutting mechanism 11 with respect to the planted cereal can be adjusted by the up-and-down swinging with the connecting point as a fulcrum.

  As shown in FIGS. 3 and 4, the threshing device 5 includes a handling cylinder 16 that is disposed in a handling chamber 14 formed in an upper part thereof so as to rotate around a support shaft 15 that is oriented in the front-rear direction, and the handling cylinder 16. A receiving net 17 that is provided so as to cover the lower side from below, a throat 18 formed at the rear side of the receiving net 17 so as to be located at the lower end of the threshing processing direction of the threshing device 5, and disposed below the receiving net 17 The swing sorting mechanism 19, the tang 20 arranged in front and lower of the swing sorting mechanism 19, the first recovery portion 21 formed on the front side lower side of the swing sorting mechanism 19, and the lower rear side of the swing sorting mechanism 19 A top plate 24 formed by covering the upper side of the handling cylinder 16 from above is opened and closed. Equipped to be swingable.

  The handling chamber 14 is defined by a receiving net 17 and a top plate 24 that cover the handling cylinder 16. A rear end portion of the feeder 13 is connected to a supply port 25 formed at a lower portion of the front end, and is conveyed by the feeder 13. The whole of the harvested cereal meal is input and supplied from the supply port 25 as a threshing processed product.

  The handling cylinder 16 has a support shaft 15 that is rotatably mounted on the front wall 26 and the rear wall 27 of the threshing device 5, and is supported by the support shaft 15 with power from the engine 2 transmitted through the carp 20 or the like. The threshing process is applied to the harvested cereals supplied to the handling room 14 by being rotated clockwise as viewed from the front, and the threshing process is performed on the harvested cereals while promoting the singulation of the grains. Transport toward the rear, which is the lower side of the direction.

  The receiving net 17 is a concave receiving net formed in a lattice shape having a horizontally long rectangular mesh whose length in the direction along the circumferential direction of the handling cylinder 16 is longer than the length in the direction along the front-rear direction. Receiving the harvested cereal meal supplied to the chamber 14 and assisting in the threshing process of the handling cylinder 16 with respect to the harvested cereal meal, and the cerealized grain, the grain with the branch stem obtained by the threshing process, or the threshing Leakage generated in the process is caused to leak toward the lower swing sorting mechanism 19 and leakage of the threshing cereal mash into the swing sorting mechanism 19 is prevented.

  The swing sorting mechanism 19 forms a grain pan 30 forming a front coarse sorting portion and a front and rear coarse sorting portion on an upper portion of a sheave case 29 that is driven to swing forward and backward by a cam type drive mechanism 28. A chaff sheave 31 and a Strollac 32 forming a rear rough sorting portion are arranged in that order from the front side of the sheave case 29, and a glen pan 33 forming a front fine sorting portion at the lower portion of the sheave case 29, and a rear The grain sheave 34 that forms the fine sorting section on the side is arranged from the front side of the sheave case 29 in that order, and a sorting process product in which single grains and swarf leaked from the receiving net 17 are mixed is used. Single grained grains and branches that have been received by the upper grain pan 30, chaff sheave 31, or Strollack 32, subjected to coarse sorting by sieving, and leaked from the chaff sheave 31. Receiving the sorting processed product with attached grains etc. in the lower grain pan 33 and the grain sieve 34, applying a fine sorting process by sieving sorting, the sorting processed product as a single grain, Sorting into a mixture such as grain with grain branch and sawdust as No.2 and dust such as sawdust as No.3.

  The carp 20 is rotated by the power from the engine 2 transmitted through the belt-type transmission mechanism 35 with the support shaft 20 </ b> A serving as a fulcrum. By supplying the sorted processed product or the sorted processed product sorted by the swing sorting mechanism 19, the sorted processed product is subjected to the wind sorting process, and the sorted processed material is blown with small specific gravity such as sawdust. Divided and conveyed toward the outlet 23 on the lower side in the threshing direction.

  The first collection unit 21 collects the single grain that leaks from the grain sieve 34 of the swing sorting mechanism 19 in the state where dust such as straw scraps has been removed by the sorting wind from the Karatsu 20 as the first thing. Then, the recovered first item is conveyed toward the lifting screw 37 (see FIG. 2) that is connected to the right end of the first screw 36 that is disposed in the left-right direction at the bottom.

  The second recovery unit 22 includes a mixture of grains such as branches and cereals that flow down from the rear end of the grain sieve 34 without leaking from the grain sieve 34 of the rocking sorting mechanism 19, and the rocking sorting mechanism 19. A mixture such as grain with grain branches and sawdust leaking from the Strollac 32 is collected as No. 2 and the No. 2 screw 38 arranged in the left and right direction at the bottom of the collected No. 2 has its right end. To the second reduction mechanism 39 (see FIG. 2) that is connected in communication.

  The lifting screw 37 lifts the first item conveyed by the first screw 36 and supplies it to the grain tank 40 provided at the upper part of the bagging device 6 (see FIGS. 1 and 2). The second reduction mechanism 39 includes a reprocessing unit that re-threshs the second item conveyed by the second screw 38, and lifts and shakes the second item after the threshing process by the reprocessing unit. Return to the dynamic sorting mechanism 19 (see FIG. 2).

  The discharge port 23 is used for removing cereal cereals that do not leak from the receiving net 17 and flow down from the discharge port 18, and swarf sorted and conveyed to the rear of the oscillating and sorting mechanism 19 by a sieving sorting process or a wind sorting process. Release outside the vehicle.

  As shown in FIGS. 3 to 7, the handling cylinder 16 is composed of a frustoconical scoring part 41 equipped at the front end part thereof, and a handling processing part 42 connected to the rear end of the scoring part 41, On the outer peripheral surface of the scraping unit 41, two spiral teeth 43 that scrape and convey the harvested cereal meal supplied from the supply port 25 toward the rear handling unit 42 when the handling cylinder 16 is rotated are integrated. Equipped.

  The handling unit 42 is integrally provided at a first support plate 44 integrally provided at the front portion of the support shaft 15, a second support plate 45 provided integrally at the front and rear intermediate portions of the support shaft 15, and a rear end portion of the support shaft 15. The third support plate 46 and a round pipe steel material supported by the support plates 44 to 46 so as to be arranged in the circumferential direction of the handling cylinder 16 at a predetermined interval in a front-rear orientation along the support shaft 15. Six handling cylinder frames 47, and a plurality of the handling cylinder frames 47 that are provided so as to protrude from the handling cylinder frame 47 toward the outside of the handling cylinder 16 and are arranged at regular intervals in the front-rear direction. The tooth handling 48, etc.

  That is, the handling cylinder 16 is arranged and arranged so that a plurality of handling teeth 48 projecting outward from the handling cylinder 16 are arranged at a predetermined interval in the circumferential direction and the front-rear direction of the handling processing unit 42. The internal space S of the part 42 communicates with the handling chamber 14 to allow entry of the threshing product into the internal space S. With this, during the rotation operation, the surrounding threshing product and While stirring the threshing processed product that has entered the internal space S, the threshing processing is performed on the threshing processed product by striking the handling barrel frame 47 or the tooth handling 48.

  Further, the internal space S of the handling processing unit 42 communicates with the handling chamber 14, so that even when a large amount of harvested cereal meal is supplied to the handling chamber 14 as a threshing processed product, the internal space of the handling processing unit 42. Since S can be effectively used as a processing space for threshing treatment, retention of threshing products in the processing space and saturation of the processing space can be avoided, and sufficient threshing processing due to retention of threshing products and saturation of the processing space The occurrence of inconveniences such as leakage of the threshing product from the concave 3 without being performed or damage to the transmission system for the handling cylinder 16 due to an increase in load required for the threshing processing can be avoided.

  When the handling cylinder 16 is rotated, not only the plurality of tooth handling teeth 48 but also the six handling cylinder frames 47 forming the handling processing section 42 of the handling cylinder 16 are handled handling members that act on the threshing product. Therefore, it is possible to improve threshing performance and threshing efficiency.

  In addition, when the handling cylinder 16 is rotated, outside air sucked from the supply port 25 along with the rotation of the helical teeth 43 is collected around the handling cylinder 16 together with the harvested cereal rice cake that is scraped and conveyed by the action of the scraping portion 41. And flow smoothly into the internal space S of the handling unit 42, thereby preventing swarf generated from the threshing from flowing out from the supply port 25 to the feeder 13 and threshing the threshing product. Transport to the lower side of the direction can be performed more quickly.

  Moreover, the outside air sucked from the supply port 25 passes through the inside of the feeder 13 connected to the supply port 25, and the feeder 13 harvests the cutting and conveying device 4 equipped with the cutting mechanism 11 and the auger 12. Since the supply port 25 communicates with the carry-out port (not shown) for carrying out the recovered cereals formed in the collection unit, when the handling cylinder 16 is rotated, the suction action by the rotation of the helical teeth 43 Dust such as sawdust generated in the harvesting and collection process in the harvesting and collecting unit, along with the outside air, around the handling cylinder 16 and the handling through the internal space of the feeder 13 and the supply port 25 from the carry-out port of the harvesting and collecting unit. It will flow into the internal space S of the processing unit 42, and as a result, it is possible to suppress sticking accumulation and soaring of sawdust and the like in the harvesting and collecting part. Caused Etc. can be suppressed decrease in the work environment and visibility.

  Each of the support plates 44 to 46 has a circular shape centered on the support shaft 15, and a barrel frame 47 is bolted to the outer peripheral side of the support plate 44 at an equal distance from the support shaft 15.

  That is, on the outer peripheral side of each support plate 44 to 46, six handling cylinder frames 47 are arranged in a state of being arranged at regular intervals in the circumferential direction so that the cylinder diameter of the handling cylinder 16 is increased. As a result, it is possible to prevent the harvested cereal from being wrapped around the handling cylinder 16.

  Each barrel frame 47 can be reoriented to a normal posture in which the front-rear direction coincides with the front-rear direction of the handle barrel 16, and a reverse posture in which the front-rear direction is opposite to the front-rear direction of the handle barrel 16, and Bolts are connected to the support plates 44 to 46 so that the front and rear directions with respect to the adjacent handling cylinder frames 47 are reversed.

  The teeth 48 are arranged at a constant pitch P in the front-rear direction with respect to the handle frame 47, and the distance L1 from the front end of the handle frame 47 to the center of the foremost handle 48 and the handle frame 47 The arrangement is set such that the difference from the distance L2 from the rear end to the center of the last tooth 48 is a half pitch (= 1 / 2P).

  From this configuration, while adopting the same configuration as the six handling cylinder frames 47, the handling teeth 48 provided in each of the handling cylinder frames 47 are front and rear with the handling teeth 48 of the adjacent handling cylinder frames 47. As a result, the entire handling cylinder 16 is arranged in a spiral shape that is displaced by a half pitch, thereby rotating the handling cylinder 16. In some cases, not only the threshing process is performed on the harvested cereal but also a conveying function for sending the harvested cereal toward the lower side in the threshing process direction.

  Further, since each handling cylinder frame 47 is equipped so that the orientation can be changed between the normal posture and the inverted posture, the handling teeth 48 positioned on the upper side in the threshing processing direction, which is relatively easy to wear due to a large amount of the threshing processed material. When wear becomes significant due to long-term use, the direction of each barrel frame 47 is changed, so that the plurality of teeth 48 provided on each barrel frame 47 are relatively easily worn away. The position of the upper teeth 48 and the lower teeth in the threshing direction that are difficult to wear can be changed to a state where they are exchanged at a stroke, whereby the teeth 48 on the lower side in the threshing direction with less wear. Can be effectively used as the tooth handling 48 on the upper side in the threshing process direction with a large amount of processed threshing.

  Each tooth 48 is made of a round bar steel material that penetrates the barrel frame 47, and among these teeth 48, the teeth 48 </ b> A provided at the front end of the handling section 42 penetrate the barrel frame 47. Are formed in a straight line with a small-diameter portion, and are detachably nut-attached to the barrel frame 47 so that the whole is located on a line connecting the center of the support shaft 15 and the center of the barrel frame 47, The teeth 48B provided at the intermediate portion of the handling section 42 are formed in a straight line having a small diameter portion penetrating the handling frame 47, and the entirety thereof is the center of the support shaft 15 and the center of the handling frame 47. 48C, which is welded to the barrel frame 47 so as not to be detachable and disposed at the rear end of the handling section 42, includes a small diameter portion that penetrates the barrel frame 47. Bending shape At the same time, the base end side is located on a line connecting the center of the support shaft 15 and the center of the handling cylinder frame 47, and the extension end side can be attached to and detached from the handling cylinder frame 47 so as to have a receding angle θ. The nut is fixed to.

  That is, since each tooth 48A and each tooth 48C located at both front and rear ends of the handling part 42 are detachable, the tooth handling 48 located on the upper side in the threshing processing direction (an intermediate part of the handling part 42). As a countermeasure when the teeth on the side of the threshing process in the plurality of teeth 48B positioned at the upper side) are significantly worn due to long-term use, the direction of each barrel frame 47 is changed to When the position of the tooth handling 48 on the upper side in the threshing processing direction, which is relatively easy to wear, and the position of the tooth handling 48 on the lower side in the threshing processing direction, which is less likely to be worn, is changed. Thus, by changing the tooth-handling 48A and the tooth-handling 48C at both the front and rear ends opposite to the original position with respect to the handling drum 16, the tooth-handling 48A, 48C can be returned to the original position.

  Further, on the lower side of the threshing processing direction in which the amount of threshing cereals increases, the handle teeth 48C located at the rear end portion of the handling cylinder 16 are restrained from catching the threshing cereals by the receding angle θ. It is possible to suppress the retention of the shed cereal meal caused by the catch and promote the release of the shed cereal meal from the outlet 23.

  As shown in FIGS. 3 and 4, on the inner surface of the top plate 24, a plurality of feeds for guiding the harvested cereals in the handling chamber 14 toward the lower side in the threshing process direction as the handling cylinder 16 rotates. The dust valves 49 are fixedly provided so as to be arranged at regular intervals in the front-rear direction. Incidentally, the dust feed valve 49 may be configured to be movable so that the degree of opening can be adjusted according to the amount of processed threshing in the handling chamber 14 to further improve the threshing performance and threshing efficiency.

  As shown in FIGS. 4 to 8, on the left and right outer sides of the handling cylinder 16, at a position spaced apart from the rotation locus K of the tooth handling 48 by a predetermined interval, a support frame facing front and rear that supports the receiving net 17 and the top plate 24. 50 and 51 are provided, and among the support frames 50 and 51, the support frame 51 provided on the right side of the handling cylinder 16 on the lower side in the rotation direction of the handling cylinder 16 includes a plurality of scissors cutting blades 52. Is equipped.

  Each chopping blade 52 is positioned on the lower side of the support frame 51 in the threshing processing direction and on the upper side of the threshing processing direction than the throat 18, and between the rotation trajectories K of the corresponding tooth handling 48 from the outside of the tooth handling 48. In order to enter, it is arranged in a state where the position is shifted by 1/4 pitch (= 1 / 4P) with respect to the corresponding tooth 48.

  From this configuration, the harvested cereal rice cake supplied from the supply port 25 into the handling chamber 14 is conveyed while being threshed by the rotation operation of the handling drum 16, and is conveyed to the lower side in the threshing treatment direction by the conveyance. Then, every time it is transported to the upper side of the handling chamber 14 by the threshing process thereafter, it is transported toward the discharge port 18 while being pressed against the cutting blade 52 and being cut. As it arrives, it flows down from the discharge port 18 toward the discharge port 23 in a chopped state, and is discharged from the discharge port 23 to the outside of the vehicle.

  That is, on the lower side of the threshing process direction, the chopped cereals are shredded with the chopping blade 52 while the threshing process is being performed, and thus the wrapping of the chopped cereal meals around the handling cylinder 16 caused by performing the threshing process with a long sword In addition, it is possible to prevent tangling of long ridges, etc., and to avoid an increase in conveyance load due to wrapping or tangling, and to eliminate waste after harvesting work that is required when discharging the long ridges to the outside of the vehicle Can be made unnecessary.

  In addition, on the upper side of the threshing process direction where there are many unthreshed cereals, the chopping blade 52 is not cut by the chopping blade 52. It is possible to avoid the possibility that the easy non-threshing is damaged due to the cutting action of the cutting blade 52 together with the harvested cereal, and between the cereals that are lumped due to the entanglement of long ridges on the upper side in the threshing processing direction Even if the grain enters, the cutting action of the chopping blade 52 on the lower side of the threshing processing direction can take out the grain that has entered between the lumps of cereals, and enters between the lumps of cereals. It is possible to avoid the occurrence of No. 3 loss due to the release of the cereal grains together with the lump grains.

  Furthermore, by arranging the chopping blade 52 on the upper side in the threshing processing direction with respect to the throat 18, the grains taken out from the massive culm by the cutting action of the chopping blade 52 are shaken from the receiving net 17. Since it leaks toward the dynamic sorting mechanism 19, it is possible to avoid the occurrence of the third loss due to the grain taken out from the lump cereals flowing down from the discharge port 18.

  In addition, since it is not necessary to equip a dedicated shredding device for shredding the waste after the threshing process, the structure can be simplified and the cost can be reduced, and the entire combine by reducing the weight of the car body. As a result, the load can be reduced.

  As shown in FIGS. 4 to 8, each scissor cutting blade 52 is integrally formed by a pair of both side walls 53 </ b> A of a steel plate material 53 bent in a U-shape, and an intermediate wall 53 </ b> B of the steel plate material 53 is a support frame. Compared with the case where each scissor cutting blade 52 is formed independently and is individually connected to the support frame 51 by bolts, the scissors cutting blade 52 is connected to the support frame 51. The workability at the time of assembling 52 can be improved.

  Each side wall 53 </ b> A of the steel plate material 53 is formed so that the front-rear direction view in the assembled state is an isosceles triangle, and the upper and lower equilateral parts thereof are the cutting edge portions 52 a of the scissors cutting blade 52.

  That is, each scissor cutting blade 52 has a blade edge portion 52a at both upper and lower edges thereof, and is configured to change the blade edge portion 52a to be used by changing the direction so that the upper and lower sides are reversed. As a result, when the sharpness of the cutting edge portion 52a in use is reduced due to wear or chipping, the cutting edge portion used by changing the direction of the cutting blade 52 without polishing or replacing the cutting blade 52 By replacing 52a, it is possible to deal with it easily and inexpensively.

  As shown in FIG. 9, the rough sorting chaff sheave 31 has a plurality of sorting pieces 54 </ b> A in an upward scale shape that is inclined so as to be positioned closer to the lower side in the sorting direction, and between the sorting pieces 54 </ b> A in the front row. A single sorting plate 54 made of a steel plate material in which a plurality of leakage openings 54B are arranged in a staggered manner in the front, rear, left, and right directions by striking them so that the sorting pieces 54A in the rear row are arranged in a staggered manner. The sorting plate 54 is bolted to the sheave case 29 in a rearwardly inclined posture that is located higher on the lower side in the sorting direction.

  In other words, since the rough sorting chaff sheave 31 is constituted by the single sorting plate 54, for example, the chaff sheave 31 is constituted by arranging and arranging a large number of chaff flips made of strip steel plates at a predetermined interval in the front-rear direction. Compared to the case, the configuration can be simplified and the cost can be reduced.

  In addition, since the plurality of sorting pieces 54A are formed in a zigzag pattern in the front-rear and left-right directions, the sorting processed material on the chaff sheave 31 is evenly distributed in the left-right direction in the sieve sorting process. It is possible to promote the leakage of the grains from each of the leakage openings 54B, and the chaff sheave 31 is tilted rearwardly, so that the chaff sheave is more easily selected in the sieve selection process than when the chaff sheave 31 is installed in a horizontal posture. The force with which 31 pushes the sorting processed product upward toward the upper side in the sorting process direction is increased, which suppresses the conveyance of the sorting process product to the lower side in the sorting direction and causes the vertical movement of the sorting process product to be intense. Thus, since the specific gravity difference of the sorted product can be more effectively selected, the generation of the third loss in which the grain is released from the outlet 23 to the outside of the vehicle is reduced, and the grain having a large specific gravity Leakage will be lower is promoted from the leakage underneath port 54B of the result, thereby improving the grain collection efficiency.

  Of each sorting piece 54A, each sorting piece 54Aa located on the left and right center side of the sorting plate 54 is formed in a substantially triangular shape (an example of a scale shape) in plan view, and each sorting piece 54Ab located at both left and right end portions other than them is The left and right center side sorting pieces 54Aa are formed in a shorter length, and each leakage port 54B is formed in the same rectangle.

  That is, by forming each leakage opening 54B into a rectangle larger than the sorting pieces 54Aa and 54Ab that are punched out in a substantially triangular shape in plan view, leakage of grains and the like from each leakage opening 54B of the sorting plate 54 In addition, the sorting pieces 54Ab at the left and right end portions of the sorting plate 54 are formed to be shorter than the sorting pieces 54Aa on the left and right center sides, so that the sorting processing product on the sorting plate 54 is easy to deposit. It is possible to promote the leakage of grains and the like from the leakage ports 54B at both ends, and as a result, the grains are released from the discharge ports 23 without leaking from the respective leakage ports 54B of the sorting plate 54. The occurrence of the third loss is reduced, and the reduction of the sorting efficiency due to the accumulation of the sorting processed products at the left and right ends of the sorting plate 54 can be avoided, so that the sorting efficiency and the grain recovery efficiency are improved. Achieved.

  By the way, in this combine, since the rotation direction of the handling cylinder 16 is set clockwise in the front view as described above, leakage of the sorting processed product from the right side of the receiving net 17 on the lower side in the rotation direction of the handling cylinder 16 The amount tends to increase.

  Therefore, in the case where the sorting processing product leaked from the receiving net 17 is configured to flow down to the swing sorting mechanism 19 as it is, the sorting processing product supplied to the right side portion of the swing sorting mechanism 19 increases. The distribution of the sorting processed products in the left-right direction of the swing sorting mechanism 19 becomes non-uniform, which tends to cause a reduction in sorting efficiency and an increase in third loss.

  Therefore, in this combine, as shown in FIG. 4, the right side wall 55 of the threshing device 5 located on the lower side in the rotational direction of the handling cylinder 16 is connected to the right side of the receiving net 17 located on the lower side in the rotational direction of the handling cylinder 16. A guide plate 56 is provided for guiding the leaked sorting product to flow toward the left and right central sides of the swing sorting mechanism 19, whereby the sorting processing product leaking from the receiving network 17 is provided. Most of them are supplied to the left and right center side of the swing sorting mechanism 19 and are equally distributed in the left and right direction along with the swing of the swing sorting mechanism 19. As a result, it is possible to avoid a decrease in the sorting efficiency and an increase in the third loss due to the shifting of the sorting processed product in the left-right direction of the swing sorting mechanism 19.

  As shown in FIGS. 1, 2, and 10, at the right end of the body frame 1, an auxiliary unit used when performing a bagging operation using a bagging device 6 mounted on the right half of the body frame 1. A working posture in which the deck 57 is laid down so as to extend toward the right outer side of the vehicle body with the support shaft 58 facing forward and backward as a fulcrum, and a retracted posture in which the deck 57 stands up along the right end of the vehicle body frame 1 It is equipped so that it can be switched to a posture, is held in a working posture by contact with the vehicle body frame 1, and is held in a retracted posture by a fixing tool (not shown).

  Further, the bagging device 6 has an action posture that covers the upper side of the worker who performs the bagging operation on the auxiliary deck 57 with the support shaft 60 facing forward and backward provided at the upper end of the grain tank 40 as a fulcrum. And can be switched to the retracted position located above the threshing device 5, and held in the working position by contact with the first stopper 61 facing forward and backward disposed on the right side of the upper end of the grain tank 40, An awning 63 that is held in a retracted posture by contact with a second stopper 62 facing forward and backward provided on the left side of the upper end of the grain tank 40 is provided.

  In other words, by switching the awning 63 to the working posture, the bagging work on the auxiliary deck 57 can be performed in the shade, the working environment for the bagging work is improved, and the fatigue level in the bagging work is improved. Can be reduced.

  The awning 63 includes a frame portion 63A made of a round pipe steel material bent in a U-shape and a awning portion 63B made of a steel plate material inscribed in the frame portion 63A, and is stored in a barn during traveling. By switching to the retracted posture at the time of running, it functions as a protective member that prevents other things from contacting the threshing device 5 from above.

    [Another embodiment]

[1] The threshing device 5 may be mounted on a self-detaching combine that is supplied to the handling chamber 14 only with the tip side of the harvested grain culm.

[2] The threshing device 5 may employ a crimp net or a resin net as the receiving net 17.

[3] A rough sorting unit other than the chaff sheave 31 in the swing sorting mechanism 19, for example, a rear coarse sorting unit, or the like may be configured by the sorting plate 54.

[4] The rough sorting section may be composed of a plurality of sorting plates 54.

[5] The sorting piece 54A may be formed so that the shape in plan view is a semicircular shape, a semi-elliptical shape, or a rectangular shape.

[6] The leakage port 54B may be formed so that the shape in plan view is a semicircular shape, a semi-elliptical shape, or a substantially triangular shape.

[7] The shape, size, or quantity of each sorting piece 54A and each leakage opening 54B is determined according to the position of the sorting plate 54 in the sorting process direction (front-rear direction) and in the direction intersecting the sorting process direction (left-right direction). May be formed differently.

  For example, by reducing the size of the sorting piece 54A located on the upper side of the sorting processing direction of the sorting plate 54 in which the grain content in the sorted product increases, and increasing the size of the leakage port 54B, It may be possible to improve the grain recovery efficiency on the upper side in the sorting process direction, and it is located on the lower side in the sorting process direction of the sorting plate 54 in which the content of dust such as sawdust in the sorted product is increased. The size of the sorting piece 54A and the size of the leakage port 54B are reduced to suppress the leakage of fine dust and the like into a fine sorting portion and to promote the release of the sorting processed product with a large amount of dust from the vehicle. In addition, the size of the leakage ports 54B located at the left and right ends of the sorting plate 54 on which the sorting processed product is easy to deposit is increased, and the grain recovery efficiency at the left and right ends of the sorting plate 54 is increased. You may make it aim at improvement.

Whole side view of all-throw-in type combine combiner Overall plan view of all-injection combine Longitudinal side view of threshing device Partial longitudinal front view of threshing device The top view of the principal part which shows the structure of a handling cylinder, and arrangement | positioning of a cutting blade Longitudinal plan view of the main part showing the configuration of the barrel and the arrangement of the cutting blades Longitudinal front view of the main part showing the configuration of the barrel and the arrangement of the cutting blades Perspective view showing shape of scissors cutting blade Perspective view of main part showing configuration of chaff sheave for coarse selection Rear view of the main part showing the sunshade configuration

Explanation of symbols

17 Receiving network 19 Oscillating sorting mechanism 31 Coarse sorting unit 54 Sorting plate 54A Sorting piece 54Ab Sorting piece left and right ends 54B Leakage opening

Claims (4)

A sorting structure of a threshing device having a swinging sorting mechanism that receives and sorts the processed material leaked from the receiving net along with the threshing processing,
A sorting structure for a threshing device, wherein the coarse sorting portion of the swing sorting mechanism is constituted by a sorting plate in which a plurality of sorting pieces are punched upwards to form a plurality of leak holes.   The sorting structure of the threshing apparatus according to claim 1, wherein the sorting pieces positioned at both left and right ends of the coarse sorting unit are formed in a short length.   The sorting structure for a threshing apparatus according to claim 1 or 2, wherein the leakage opening is formed in a rectangular shape. The sorting structure of the threshing apparatus according to any one of claims 1 to 3, wherein the plurality of sorting pieces are arranged in a staggered manner so that a rear sorting piece is positioned between the preceding sorting pieces.

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