JP2013042744A - Threshing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arrangement of a threshing apparatus that enables a waste straw conveying mechanism to approach a grain culm conveying mechanism.SOLUTION: A drive sprocket 60 drives a waste straw conveying mechanism 18. A driving force for driving the drive sprocket 60 is inputted to a drive input pulley 70. A second relay pulley 74 is positioned in a drive transmission path from a drive output pulley 69 to the drive input pulley 70. A second transmission belt 76 is stretched on the drive input pulley 70 and the second relay pulley 74. The drive sprocket 60 is positioned at the upstream end of a grain culm 14 in its conveyance direction along the longitudinal direction of the waste straw conveying mechanism 18. The waste straw conveying mechanism 18 is designed to receive the grain culm 14 from a grain culm conveying mechanism 11 in such a manner as to pass the grain culm under the drive sprocket 60. The drive input pulley 70 and the second transmission belt 76 are disposed in positions higher than the drive sprocket 60.

Description

  The present invention relates to a threshing apparatus. In detail, it is related with the structure which transmits a driving force to a waste conveyance mechanism.

  A handling cylinder for threshing the head of the cereal, a cereal conveying mechanism for conveying the cereal through the vicinity of the handling cylinder, and an evacuation for holding and conveying the cereal that has been threshed There has been known a threshing device including a straw transporting mechanism. This type of threshing apparatus is described in Patent Document 1 to Patent Document 3, for example.

  As is well known, a plurality of teeth are provided on the outer periphery of the handle cylinder. As the cereals transported by the cereal transporting mechanism pass through the vicinity of the rotating barrel, the tooth handling acts on the cereals many times, and threshing is performed. After the threshing is completed, the culm (removal) is transferred from the cereal transporting mechanism to the rejecting transporting mechanism. The waste transport mechanism transports the received waste to the waste processing device. The waste is processed by a waste treatment device and finally discharged outside the machine.

  The drive transmission mechanism for transmitting the driving force to the waste transport mechanism will be briefly described as follows. That is, the waste transport mechanism includes a waste transport chain that is driven to circulate. The threshing devices disclosed in Patent Literature 1 and Patent Literature 2 are driven input pulleys (a waste pulley 50 in Patent Literature 1 and an input pulley 37 in Patent Literature 2) to which a driving force for driving the waste conveying chain is input. ). The driving force output from the driving output pulley (the handling pulley 52 in Patent Document 1 and the output pulley 132 in Patent Document 2) provided at the end of the handling cylinder with respect to this driving input pulley is transmitted via a transmission belt or the like. Have been entered.

Japanese Patent No. 4394892 JP 2011-24440 A JP 2002-112618 A

  By the way, a pulley having a relatively large diameter is adopted as a drive input pulley to which a driving force is input to the waste transport mechanism from the viewpoint of drive transmission efficiency, rotation speed, and the like. For this reason, as shown in the drawings of Patent Document 1 and Patent Document 2, the drive input pulley occupies a large space in the vertical direction. Since the drive input pulley occupies a large space in this manner, the drive input pulley becomes an obstacle, and there is a problem that the waste transport chain cannot be disposed sufficiently close to the grain transport mechanism. As a result, in the conventional threshing apparatus, it has not been said that the delivery performance of the cereals from the cereal transportation mechanism to the waste transportation chain is necessarily good.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a configuration in which the waste transporting mechanism can be brought closer to the rice straw transporting mechanism, thereby eliminating the waste from the grain transporting mechanism. The purpose is to improve the delivery of cereals (removal) to the koji transport mechanism.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the viewpoint of this invention, the threshing apparatus of the following structures is provided. That is, the threshing device includes a handling cylinder, a cereal conveying mechanism, a drive output wheel, a rejection conveying mechanism, a rejection driving wheel, a driving input wheel, a relay wheel, and an endless annular body. . The treatment drum includes a plurality of teeth on the outer periphery, and threshs the tip of the culm by rotating about a rotation shaft provided substantially horizontally. The corn straw transporting mechanism holds the root portion of the corn straw and transports it in a direction along the rotation axis of the barrel. The drive output wheel outputs a rotational driving force of the handling cylinder. The waste transporting mechanism receives and transports cereals threshed by the handling cylinder from the cereal transporting mechanism. The waste driving wheel drives the waste transport mechanism. A driving force for driving the exclusion drive wheel is input to the drive input wheel. The relay wheel is disposed between a drive transmission path from the drive output wheel to the drive input wheel. The endless annular body is stretched over the drive input wheel and the relay wheel. The waste driving wheel is disposed at an end portion on the upstream side in the grain transporting direction in the longitudinal direction of the waste transporting mechanism. Moreover, the said waste conveyance mechanism is comprised so that a grain straw may be received from the said grain straw conveyance mechanism so that the downward direction of the said waste driving wheel may be passed. And the said drive input wheel and the said endless annular body are arrange | positioned in the position higher than the said exclusion drive wheel.

  By disposing the drive input wheel (and the endless annular body) at a position higher than the reject drive wheel, the drive input wheel ( And endless annular bodies) do not get in the way. Therefore, as compared with the conventional configuration, the waste transporting mechanism and the grain transporting mechanism can be brought closer to each other. As a result, it is possible to improve the transferability of the rice straw from the grain transporting mechanism to the waste transporting mechanism.

  Said threshing apparatus WHEREIN: It is preferable that the said endless annular body is arrange | positioned so that a circulation drive may be carried out in a substantially horizontal surface.

  Thereby, a drive input wheel and an endless annular body can be arranged compactly in the up-and-down direction. Accordingly, the drive input wheel does not get in the way, and as a result, the waste conveying mechanism and the grain conveying mechanism can be brought closer to each other. As a result, the ability to transfer grain from the wheat straw conveying mechanism to the waste conveying mechanism is further improved. be able to.

  The threshing device is preferably configured as follows. That is, the waste transporting mechanism is configured to be rotatable about a rotational shaft provided in a direction substantially parallel to the grain transporting direction of the waste transporting mechanism. The drive input wheel is disposed at a position higher than the rotation shaft. And it is comprised so that the grain straw currently conveyed by the said rejection conveyance mechanism may be open | released by rotating the said rejection conveyance mechanism in the direction which brings the said drive input wheel close to the said relay wheel.

  In other words, when the waste transporting mechanism is clogged with cereals, the squeezed cereals can be removed by rotating the waste transporting mechanism. At this time, since the drive input wheel moves in a direction approaching the relay wheel, the endless annular body is not pulled during the rotation. Therefore, the waste transport mechanism can be rotated without removing the endless annular body.

The side view which shows the whole structure of the threshing apparatus which concerns on one Embodiment of this invention. Side surface sectional drawing which shows the inside of a threshing apparatus. Front sectional drawing of a threshing apparatus. Plan sectional drawing of a threshing apparatus. FIG. The rear view of a drive transmission mechanism. The figure which looked at the rejection conveyance mechanism and the drive transmission mechanism in the rotating shaft direction of the rejection conveyance mechanism. The perspective view of a drive transmission gear case.

  Next, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1 to FIG. 4, a culm transport mechanism 11 is disposed on the side surface of the threshing device 10. The corn straw transport mechanism 11 mainly includes a corn straw transport chain 12 and a pressing member 13 (FIG. 3).

  As shown in FIG. 1, the cereal haul transport chain 12 is configured in an endless annular shape and is configured to be circulated and driven by the rotation of the sprocket. As shown in FIG. 3, the pressing member 13 is configured to be pressed against the upper surface of the cereal conveyance chain 12. Thereby, as shown in FIG. 3, the root portion of the culm 14 can be sandwiched and held between the upper surface of the culm transport chain 12 and the pressing member 13. And it is the structure which conveys the said culm 14 in a predetermined direction by circulatingly driving the culm conveyance chain 12 in this state. In the following description, the direction in which the culm is transported by the culm transport mechanism 11 is simply referred to as the transport direction.

  In the threshing apparatus 10, a handling room 15 is formed which is a space for threshing the cereal. A handling cylinder 16 that threshs by rotating is disposed in the handling chamber 15. As the cereal basket 14 is transported by the cereal basket transport mechanism 11, the tip 14 a of the cereal basket 14 passes through the inside of the handling chamber 15. At this time, the threshing of the cereal basket 14 is performed by the rotating handling cylinder 16. As shown in FIG. 4, the cereal carrying chain 12 is disposed substantially parallel to the rotating shaft 17 of the handling cylinder 16 in a plan view. Therefore, the cereal basket 14 is conveyed along the rotating shaft 17 of the handling cylinder 16.

  As shown in FIG. 2, in a side view, the upper surface of the cereal conveying chain 12 is disposed obliquely with respect to the rotating shaft 17 of the handling cylinder 16, and the downstream side in the conveying direction becomes higher. . That is, in the side view, the culm transport mechanism 11 is configured to transport the culm 14 obliquely upward. Thereby, since the attitude | position of the said grain basket 14 can be changed with conveyance of the grain basket 14, the unhandled residue by the handling cylinder 16 can be reduced.

  After the threshing by the handling cylinder 16 has been completed, the cereal meal (removal) is delivered to the retreat transportation mechanism 18 (FIGS. 1 and 4) at the downstream end of the cereal transportation mechanism 11. As shown in FIG. 4, the waste transporting mechanism 18 has a structure in which a waste transporting chain 19 and a latching transport belt 20 are provided side by side.

  The waste transport chain 19 is configured as an endless annular chain that is stretched between a drive sprocket (removal drive wheel) 60 and a driven sprocket 65 (FIG. 4). The waste transport chain 19 is arranged so as to be circulated and driven in a plane substantially perpendicular to the horizontal plane when the drive sprocket 60 rotates. As shown in FIG. 7, a pinching member 61 that is urged upward toward the lower surface of the waste transport chain 19 is disposed below the waste transport chain 19. By circulating and driving the waste transporting chain 19 in a state where the root portion of the grain funnel (removal) is sandwiched between the pinching member 61 and the lower surface of the waste transporting chain 19, The (exhaust) is configured to be conveyed along the longitudinal direction of the reject conveying chain 19.

  As shown in FIG. 4, the drive sprocket 60 is arranged in the longitudinal direction of the waste transporting chain 19 and on the upstream side (end on the side of the grain transporting mechanism 11) of the grain transporting direction by the waste transporting chain 19. Part). That is, the corn straw transporting mechanism 11 is arranged to receive the corn straw (waste potato) transported by the corn straw transport chain 12 at the end on the drive sprocket 60 side. Further, as described above, the waste transport chain 19 is configured to transport the cereals on the lower surface thereof. Therefore, the waste conveying chain 19 is configured to receive the wheat straw (waste) conveyed by the wheat straw transport chain 12 while passing below the drive sprocket 60.

  The locking and conveying belt 20 is configured as an endless annular belt that is stretched between a driving pulley 66 and a driven pulley 67 (FIG. 4). Further, the latching and conveying belt 20 is disposed between the waste transporting chain 19 and the handling cylinder 16 and is disposed substantially parallel to the waste transporting chain 19. On the latching and conveying belt 20, tines 62 (FIG. 7) projecting outward are arranged at regular intervals in the longitudinal direction of the latching and conveying belt 20. By rotating and driving the latching and conveying belt 20, the tip portion of the cereal can be conveyed below the latching and conveying belt 20 while being locked by the tine 62.

  Between the engaging and conveying belt 20 and the waste conveying chain 19, an engaging and conveying drive transmission unit 64 is provided. The latching conveyance drive transmission unit 64 coaxially connects the driven sprocket 65 of the waste conveyance chain 19 and the driving pulley 66 of the latching conveyance belt 20. As a result, a driving force is input from the waste conveying chain 19 to the locking conveying belt 20. Accordingly, the latching and conveying belt 20 is driven to circulate in the same direction as the waste and conveying chain 19 in synchronization with the waste and conveying chain 19.

  The waste transport mechanism 18 (the waste transport chain 19 and the locking transport belt 20) is driven by the rotational driving force output from the handling cylinder 16. That is, as shown in FIG. 4 and the like, a driving output pulley (driving output wheel) 69 is fixed to the rotating shaft 17 of the handling cylinder 16 at the end portion on the downstream side in the conveying direction of the grain pod 14. On the other hand, the waste transport mechanism 18 includes a drive input pulley (drive input wheel) 70 to which the drive force from the drive output pulley 69 is input. The drive input pulley 70 is connected to the drive sprocket 60 of the waste transport chain 19 via a gear case 71.

  The threshing device 10 of this embodiment includes a drive transmission mechanism 72 that transmits a driving force from the drive output pulley 69 to the drive input pulley 70. The drive transmission mechanism 72 includes a first relay pulley 73, a second relay pulley (relay wheel) 74, a first transmission belt 75, a second transmission belt (endless annular body) 76, and a drive transmission gear case (drive transmission). Part) 77.

  With the above configuration, when the rotational driving force output from the driving output pulley 69 is input to the driving input pulley 70, the driving sprocket 60 is rotationally driven, and the waste conveying chain 19 and the locking conveying belt 20 are circulated. Is done. Thereby, the cereals (removal) after the threshing by the handling cylinder 16 can be transported by the retreat transport chain 19 and the locking transport belt 20. In addition, the conveyance direction of the cereals (removal) by the waste conveyance chain 19 and the latching conveyance belt 20 becomes diagonal with respect to the conveyance direction of the cereals by the cereal conveyance mechanism 11 in a plan view (FIG. 4). Is set to Thereby, the cereal meal (removal) can be conveyed so that it may be drawn inside the housing of the threshing apparatus 10.

  As shown in FIG. 1, a waste disposal unit 21 is disposed below the waste transport mechanism 18. The waste disposal unit 21 includes a waste cutter for finely cutting the waste, a diffusion device for discharging the cut waste to the outside of the machine, and the like. The wastes drawn into the housing of the threshing device 10 by the waste transporting mechanism 18 are sequentially put into the waste processing unit 21, and after being cut into pieces, are uniformly discharged to the field.

  Note that the above-described waste transporting mechanism 18 is configured to be able to rotate around a rotation shaft 81 shown in FIGS. 4 and 7. As shown in FIG. 4, the rotating shaft 81 is provided substantially in parallel with the grain conveying direction of the waste conveying chain 19 and the locking conveying belt 20. By rotating the upper surface of the evacuation transport mechanism 18 around the rotation shaft 81 so as to approach the handle 16 side (by rotating in the direction of the thick arrow shown in FIG. 7), The lower surface of the transport chain 19 can be moved away from the pinching member 61. That is, it is possible to release the culm (waste) from being pinched by the waste transporting chain 19 and the pinching member 61. As a result, when the culm (removal) is jammed in the slaughter and transport mechanism 18, the cereal can be removed.

  Next, the configuration for threshing the cereal meal will be described in detail.

  The handling cylinder 16 is configured by a metal plate as a hollow cylinder having a substantially octagonal columnar shape, and a rotation shaft 17 thereof is disposed substantially horizontally along the apparatus front-rear direction. A plurality of teeth 22 are provided on the outer periphery of the barrel 16 so as to protrude outward.

  As shown in FIG. 2 and the like, a plurality of teeth 22 are provided side by side in a direction parallel to the rotation shaft 17 of the barrel 16. As shown in FIG. 5, the teeth 22 are formed in a flat shape so as to form a plane parallel to the direction in which the teeth 22 are arranged. Moreover, as shown in FIG. 5, the front-end | tip part of the tooth-handling 22 is comprised by the substantially V shape where a width | variety narrows toward a front-end | tip. Therefore, a V-shaped groove 23 whose width increases toward the tip is formed between adjacent teeth 22. In addition, a round (or polygonal) punch hole 24 is formed in the back of the V-shaped groove 23 so as to communicate with the V-shaped groove 23.

  The pestle 14 conveyed through the handling chamber 15 by the cereal conveying mechanism 11 is fitted into a portion between the tooth handling 22 and the tooth handling 22 (V-shaped groove 23 and punched hole 24). By rotating the handling cylinder 16 in this state, the cereal basket 14 is handled toward the tip 14a. Thereby, only the portion of the ear is taken from the cereal basket 14. In addition, the part of the ear taken from the cereal cocoon 14 in this way is referred to as an ear piece.

  In addition, the handling cylinder 16 of this embodiment is comprised so that it may rotate to a top handle type. That is, as shown in FIG. 3, the culm 14 is handled upward, and the tip 14 a of the culm 14 is configured to pass above the handling cylinder 16.

  As shown in FIG. 2, a supply port 25 is formed at the upstream end of the handling chamber 15 in the transport direction. The tip 14 a of the corn straw 14 conveyed by the corn straw conveying mechanism 11 is introduced into the handling chamber 15 through the supply port 25. As shown in FIG. 2, a tip guide plate 26 connected to the lower edge portion of the supply port 25 is disposed upstream of the supply port 25 in the transport direction. The portion of the tip 14 a of the grain pod 14 is guided to the supply port 25 by the upper surface of the tip guide plate 26. With this configuration, the tip 14 a of the grain pod 14 can be appropriately supplied to the handling chamber 15.

  Moreover, the threshing apparatus 10 of this embodiment is provided with a backflow prevention member 50 that closes the supply port 25 from the inside of the handling chamber 15. Thus, by closing the supply port 25 with the backflow prevention member 50, it is possible to prevent the cutting of spikes from jumping out of the handling chamber 15 through the supply port 25, and to improve the efficiency of the threshing device 10. In addition, since this backflow prevention member 50 is comprised from the rubber plate, the tip 14a of the grain pod 14 can advance so that the backflow prevention member 50 may be pushed away.

  Moreover, in this embodiment, as shown in FIG. 3 etc., the culm pressing member 28 is arrange | positioned between the culm conveyance mechanism 11 and the handling cylinder 16. FIG. The corn straw holding member 28 is a round pipe disposed substantially along the conveying direction of the corn straw 14. As shown in FIG. 3, the culm pressing member 28 is disposed so as to come into contact with the culm 14 between the culm conveying mechanism 11 and the handling cylinder 16 from above. Thereby, since the grain basket 14 can be pressed down with respect to the handling cylinder 16, it can prevent the said grain basket 14 from floating from the handling cylinder 16, and can perform threshing reliably.

  Next, the processing of the tip (cutting of ears) removed from the grain basket 14 by the rotation of the handling cylinder 16 will be described in detail.

  In the handling chamber 15, grains and sawdust are generated in addition to the cutting of the ears due to the rotation of the handling cylinder 16. These mixtures are hereinafter referred to as workpieces. The object to be processed generated by the rotation of the handling cylinder 16 is discharged toward the downstream side in the rotation direction of the handling cylinder 16 by the rotation of the handling cylinder 16. At the dropping position of the object to be processed, a spike cutting device 29 is arranged. The object to be processed discharged from the handling cylinder 16 is put into the ear piece processing device 29 and processed by the ear piece processing device 29 to be singulated (the grain is removed from the branch raft).

  As shown in FIGS. 3 and 4, the ear piece processing device 29 includes a processing cylinder 30 and a receiving net 31.

  The processing cylinder 30 is formed in a substantially rectangular tube shape, and is configured to be rotationally driven with the axis thereof as a rotation shaft 32. The rotating shaft 32 of the processing cylinder 30 is disposed so as to be substantially parallel to the rotating shaft 17 of the handling cylinder 16. In this embodiment, as shown by an arrow in FIG. 3, the handling cylinder 16 and the processing cylinder 30 are rotationally driven in the same direction. The processing cylinder 30 has a plurality of processing teeth 33 protruding outward. As shown in FIG. 4, the plurality of processing teeth 33 are arranged side by side along the axial direction of the processing cylinder 30.

  The receiving net 31 is provided so as to cover the lower half of the processing cylinder 30. As shown in FIG. 3, the receiving net 31 is formed along the locus of the tip of the rotating processing tooth 33 when viewed in the axial direction of the processing cylinder 30.

  With this configuration, the workpiece introduced from the handling cylinder 16 into the earbrush processing device 29 is subjected to a crushing action between the rotating processing teeth 33 and the receiving net 31, and single grain formation is promoted. The The shed grain passes through the receiving net 31 and falls downward. Further, an incision 49 is formed at the end of the receiving net 31. A plurality of the cutting teeth 49 are formed side by side in the axial direction of the processing cylinder 30. And it is comprised so that the process tooth | gear 33 may pass between the incisors 49 by the process drum 30 rotating. Thereby, the sawdust etc. which were thrown into the ear piece processing apparatus 29 are cut | judged finely. Finely cut sawdust passes through the receiving net 31 and falls downward.

  The rotating shaft 32 of the processing cylinder 30 is disposed at a position lower than the rotating shaft 17 of the handling cylinder 16. As a result, the object to be processed falling from the handling cylinder 16 can be reliably received by the cut-off processing device 29.

  A partition plate 34 is disposed between the handling cylinder 16 and the processing cylinder 30. The partition plate 34 is formed by bending a non-porous metal plate. The lower end portion of the partition plate 34 is disposed close to the end of the receiving net 31. By providing the partition plate 34 in this way, it is possible to prevent an object to be processed in the spike cutting device 29 from jumping out toward the handling cylinder 16 due to the rotational force of the processing cylinder 30. Thereby, the processing efficiency of the cutting-out processing apparatus 29 can be improved.

  In addition, on the ceiling of the handling chamber 15, a spike-cutting guide plate 35 is suspended and supported. The spike cutting guide plate 35 is disposed at a position higher than the processing cylinder 30 and is disposed upstream of the processing cylinder 30 in the rotation direction of the handling cylinder 16. As shown in FIG. 3, the ear cutting guide plate 35 is disposed at a position where an object to be processed such as a head cutting released by the momentum of rotation of the handling cylinder 16 collides. Further, the lower end portion of the ear cutting guide plate 35 is disposed so as to face the ear cutting processing device 29. With this configuration, the object to be processed generated by the rotation of the handling cylinder 16 can be guided to the spike cutting processing device 29 by the spike cutting guide plate 35.

  Next, the sorting device 36 will be described.

  The sorting device 36 is disposed below the handling cylinder 16 and the ear piece processing device 29. As described above, the object to be processed generated in the handling cylinder 16 is processed by the cutting edge processing device 29 and falls through the receiving net 31. A fallen object (a mixture of grains, swarf, ears, etc.) falling from the receiving net 31 is referred to as an object to be selected in the following description. The object to be sorted that has fallen from the receiving net 31 is input to the sorting device 36.

  As shown in FIG. 2, the sorting device 36 includes a swing sorting unit 37 and a wind sorting unit 38.

  The swing sorting unit 37 includes a chaff sheave 39. The object to be sorted that has fallen from the receiving net 31 of the ear piece processing device 29 is first received by the chaff sheave 39. The chaff sheave 39 is configured by arranging a plurality of chaff fins 40 horizontally arranged in the left-right direction of the apparatus in the conveying direction of the cereal basket 14. The swing sorting unit 37 is configured to be able to reciprocally swing the chaff sheave 39 in the transport direction. That is, by reciprocatingly swinging the chaff sheave 39, heavy and small items to be sorted such as grains fall down between the chaff fins 40, and light and large items to be sorted such as sawdust are caught by the chaff fins 40. Remain.

  Each chaff fin 40 is arranged so that the upper surface thereof faces obliquely upstream in the transport direction. As a result, by reciprocatingly swinging the entire chaff sheave 39, the object to be sorted is transported toward the downstream side in the transport direction while being swing-sorted. Most of the grains fall until reaching the rear end of the chaff sheave 39, and only a piece of spikes and shavings remain on the chaff sheave 39.

  Next, the wind sorting unit 38 will be described. The wind sorting unit 38 includes a tang fan 41 and a grain sieve 42.

  The grain sheave 42 is configured as a mesh press or a crimp net, and is disposed below the chaff sheave 39. A first conveyor 43 configured as a screw conveyor is disposed below the grain sheave 42. Due to the rough selection of the chaff sheave 39, the heavy and small objects to be sorted (grains, etc.) that have fallen from the chaff sheave 39 fall on the grain sheave 42.

  The red fan 41 is configured to generate a sorting air that is directed downstream in the conveying direction and to apply the sorting air to the glensy sheave 42 from below.

  With the above configuration, the sorting wind generated by the red pepper fan 41 is applied to the sorting object that has fallen on the grain sieve 42. A heavy specific gravity that falls almost vertically regardless of the sorting wind, that is, a grain, is called the first thing. The first thing is introduced into the first conveyor 43, and the other lighter specific gravity is blown off toward the downstream side in the transport direction.

  The first thing (grain) introduced into the first conveyor 43 is conveyed by the first conveyor 43 and stored, for example, in a Glen tank (not shown). As described above, the grain can be selected and extracted from the selection object.

  A second conveyor 44 configured as a screw conveyor is disposed below the downstream side end portions of the chaff sheave 39 and the Glen sheave 42.

  Spikes, scraps and the like remaining on the chaff sheave 39 are transported toward the downstream side in the transport direction by the reciprocating swing of the chaff sheave 39 and fall onto the second conveyor 44. In addition, among the objects to be processed that have fallen on the grain sieve 42, cuts of ears, scraps, etc. blown off by the sorting wind of the Kara fan 41 also fall on the second conveyor 44. The wind sorting unit 38 has a blower fan 45 that applies an upward wind toward the downstream side in the transport direction with respect to the sorting object falling on the second conveyor 44.

  Of the items to be sorted that fall on the second conveyor 44, the ears with grains and the like are relatively heavy, so they fall and are introduced into the second conveyor 44 regardless of the wind of the blower fan 45. On the other hand, swarf and the like without grain are blown off by the wind of the blower fan 45 and discharged out of the apparatus from a not-shown culm outlet.

  Ears with grain are worth collecting because there is room for reprocessing and taking out the grain. Such an object to be reprocessed is referred to as a second object. The second product sorted by the wind sorting unit 38 and introduced into the second conveyor 44 is conveyed by the second conveyor 44 and supplied to the end of the second reduction conveyor 46.

  The second reduction conveyor 46 is a screw conveyor disposed substantially in the vertical direction, and is configured to convey the second item to a position higher than the ear-break processing device 29. The second product conveyed by the second reduction conveyor 46 is discharged from the discharge side end 47 of the second reduction conveyor 46. As shown in FIG. 4, a second guide passage 48 is connected to the discharge side end portion 47. The second guide passage 48 communicates with the spike breakage treatment device 29. Therefore, the second product discharged from the second reduction conveyor 46 is fed into the spike breaker 29 via the second guide passage 48. With the above configuration, the second item sorted by the sorting device 36 can be reprocessed by the ear-break processing device 29.

  Next, a characteristic configuration of the present embodiment will be described.

  First, the problems of the prior art described above will be described in more detail. A pulley having a relatively large diameter is employed as the drive input pulley of the waste transport mechanism from the viewpoint of drive transmission efficiency and the like. As shown in Patent Document 1 and Patent Document 2, in the conventional threshing apparatus, the drive input pulley (the waste pulley 50 in Patent Document 1 and the input pulley 37 in Patent Document 2) is handled by its rotating shaft. It was provided so as to be substantially parallel to the rotational axis of the barrel (so that the rotational axis was substantially horizontal). For this reason, in the conventional threshing device, the drive input pulley occupied a large space in the vertical direction. Moreover, as FIG. 4 etc. of patent document 2 shows, in the conventional threshing apparatus, a drive input pulley (input pulley 37 in patent document 2) is substantially the same as a drive sprocket (drive sprocket 33 in patent document 2). It was placed at the same height.

  In this way, in the conventional threshing device, the drive input pulley occupies a large space in the vertical direction, and is disposed at almost the same height as the drive sprocket. The drive input pulley may come into contact. For this reason, in the conventional threshing apparatus, the cereal haul conveying chain and the waste hauling mechanism have to be arranged separately. This is because, in the conventional threshing device, if the drive sprocket of the waste transporting chain is too close to the grain transporting mechanism, the drive input pulley (and the hung on this) This is because there is a possibility that the transmission belt) may come into contact.

  As described above, in the conventional threshing apparatus, the drive input pulley is in the way, and the waste transporting mechanism cannot be disposed close to the grain transporting mechanism. For this reason, it has not been said that the conventional threshing apparatus has good transferability of cereals (removal) from the cereal transporting mechanism to the rejecting transporting mechanism.

  By the way, as described above, the waste transporting chain 19 is configured to receive the wheat straw 14 (waste waste) from the wheat straw transporting chain 12 so as to pass under the drive sprocket 60. Therefore, as shown in FIG. 6, the threshing apparatus 10 according to this embodiment is configured such that the drive input pulley 70 and the second transmission belt 76 hung thereon are arranged at a position higher than the drive sprocket 60.

  According to this, there is no possibility that the drive input pulley 70 (and the second transmission belt 76) may come into contact with the cereal basket 14 passing under the drive sprocket 60. That is, the drive input pulley 70 does not get in the way. For this reason, compared with the conventional threshing apparatus, the threshing apparatus 10 of this embodiment uses the drive sprocket 60 side end part (end part on the upstream side in the transport direction) of the waste transporting chain 19 as the grain transporting chain 12. You can get closer. Therefore, compared with the conventional threshing apparatus, the threshing apparatus 10 of this embodiment can improve the delivery property of the 19 cereals (removal) from the cereal transportation chain 12 to the rejection transportation chain.

  Hereinafter, a configuration for driving the waste transporting mechanism 18 will be specifically described. As described above, the drive transmission mechanism 72 includes the first relay pulley 73, the second relay pulley 74, the first transmission belt 75, the second transmission belt 76, and the drive transmission gear case 77. .

  The first relay pulley 73 is arranged so as to rotate in the same plane as the drive output pulley 69 of the handling cylinder 16. The first transmission belt 75 is configured as an endless annular belt, and is stretched between the drive output pulley 69 and the first relay pulley 73. With the above configuration, the rotational driving force of the handling cylinder 16 output from the drive output pulley 69 is transmitted to the first relay pulley 73.

  The drive transmission mechanism 72 includes a first tension pulley 78 that rotates in the same plane as the drive output pulley 69 and the first relay pulley 73. The first tension pulley 78 is urged against the first transmission belt 75 so as to apply a predetermined tension to the first transmission belt 75. Thereby, the looseness of the first transmission belt 75 can be prevented, and the driving force can be appropriately transmitted from the drive output pulley 69 to the first relay pulley 73.

  Here, when viewed in the direction of the rotation axis 17 of the barrel 16 (shown in FIG. 6), a vertical line 80 passing through the rotation axis 17 is considered. In the threshing apparatus 10 of the present embodiment, the first relay pulley 73 is arranged on the opposite side of the cereal conveyance mechanism 11 with the vertical line 80 interposed therebetween. Therefore, the first transmission belt 75 is disposed so as to move away from the cereal conveying mechanism 11 starting from the drive output pulley 69. As described above, in this embodiment, the drive transmission mechanism 72 that connects the drive output pulley 69 and the drive input pulley 70 is bent so as to be once away from the cereal conveyance mechanism 11. That is, the drive transmission path from the drive output pulley 69 to the drive input pulley 70 is formed by bending in a lateral J shape when viewed in the direction of the rotation shaft 17 of the handling cylinder 16 (FIG. 6).

  Thereby, as shown in FIG. 6, the drive transmission mechanism 72 can be formed so that the grain straw 14 conveyed by the grain straw conveyance mechanism 11 may be bypassed. Therefore, the first transmission belt 75 is less likely to come into contact with the culm 14 that is transported by the culm transport mechanism 11.

  In the present embodiment, the first tension pulley 78 biases the first transmission belt 75 obliquely downward in a direction away from the cereal conveyance mechanism 11. That is, as shown in FIG. 6, the circulation drive trajectory of the first transmission belt 75 is bent so as to move away from the culm 14 transported by the culm transport mechanism 11. Thereby, the first transmission belt 75 is further less likely to come into contact with the culm 14 transported by the culm transport mechanism 11.

  As shown in FIG. 8 and the like, the drive transmission gear case 77 has a drive input shaft 77a and a drive output shaft 77b. The first relay pulley 73 is fixed to the drive input shaft 77a and rotates around the drive input shaft 77a. On the other hand, the second relay pulley 74 is fixed to the drive output shaft 77b and rotates around the drive output shaft 77b. Bevel gears are formed at the ends of the drive input shaft 77 a and the drive output shaft 77 b, respectively, and the bevel gears mesh with each other inside the drive transmission gear case 77. As a result, the driving force is transmitted from the first relay pulley 73 to the second relay pulley 74.

  As shown in FIG. 6, when viewed in the direction of the rotation axis 17 of the handling cylinder 16, the drive transmission gear case 77 is disposed on the opposite side of the cereal conveyance mechanism 11 with the vertical line 80 interposed therebetween. Thus, since the drive transmission gear case 77 is arranged away from the corn straw transporting mechanism 11, the tip of the corn straw 14 transported by the corn straw transporting mechanism 11 comes into contact with the drive transmission gear case 77. There is no such thing.

  As shown in FIG. 8, the drive transmission gear case 77 is configured such that the drive input shaft 77a and the drive output shaft 77b are substantially orthogonal to each other. Specifically, the drive input shaft 77 a is disposed so as to be parallel to the rotation shaft 17 of the handling cylinder 16. On the other hand, the drive output shaft 77b is arranged in a substantially vertical direction so that the tip thereof faces upward. Accordingly, the second relay pulley 74 fixed to the drive output shaft 77b rotates in a substantially horizontal plane.

  The drive input pulley 70 of the waste transport mechanism 18 is disposed so as to rotate in the same plane as the second relay pulley 74. That is, the drive input pulley 70 rotates in a substantially horizontal plane. The second transmission belt 76 is configured as an endless annular belt, and is stretched between the second relay pulley 74 and the drive input pulley 70. With the above configuration, the rotational driving force of the second relay pulley 74 is transmitted to the drive input pulley 70. Accordingly, the second transmission belt 76 is driven to circulate in a substantially horizontal plane.

  The drive transmission mechanism 72 includes a second tension pulley 79 that rotates in the same plane as the second relay pulley 74 and the drive input pulley 70. The second tension pulley 79 is urged against the second transmission belt 76 so as to apply a predetermined tension to the second transmission belt 76. Thereby, the looseness of the second transmission belt 76 can be prevented, and the driving force can be appropriately transmitted from the second relay pulley 74 to the drive input pulley 70.

  The driving force input to the drive input pulley 70 is input to the gear case 71. The gear case 71 has the same configuration as the drive transmission gear case 77 described above. That is, the gear case 71 includes a drive input shaft 71a (FIG. 4) to which the drive input pulley 70 is fixed and a drive output shaft 71b (FIG. 6) to which the drive sprocket 60 is fixed. The drive input shaft 71a and the drive output shaft 71b are connected by a bevel gear to transmit a driving force from the drive input pulley 70 to the drive sprocket 60.

  As with the drive transmission gear case 77, the gear case 71 is configured such that the drive input shaft and the drive output shaft are orthogonal to each other. That is, the drive input shaft 71a of the gear case 71 is disposed in a substantially vertical direction with its upper end facing upward. Accordingly, the drive input pulley 70 rotates in a substantially horizontal plane. The drive output shaft 71b of the gear case 71 is disposed in a substantially horizontal direction. Accordingly, the drive sprocket 60 rotates in a plane that is substantially orthogonal to the horizontal plane.

  In the present embodiment, the second relay pulley 74 and the drive input pulley 70 are disposed at a position higher than the upper end of the outer periphery of the handling cylinder 16. Accordingly, when viewed in the direction of the rotation axis 17 of the handling cylinder 16 (FIG. 6), the second transmission belt 76 passes above the handling cylinder 16. Thereby, the cereal basket 14 conveyed along the upper surface of the handling cylinder 16 can pass below the second transmission belt 76. Therefore, it is possible to prevent the second transmission belt 76 from coming into contact with the cereal basket 14.

  In the present embodiment, in order to reliably prevent the interference between the second transmission belt 76 and the grain basket 14, when viewed in the direction of the rotation shaft 17 of the handling cylinder 16 (FIG. 6), the second transmission belt 76 is It is configured to pass through a position higher than the rotation trajectory of the tip of the tooth handling 22. In the present embodiment, the second transmission belt 76 is compactly arranged in the vertical direction, and thus the second transmission belt 76 can be arranged at a high position.

  As described above, in this embodiment, the drive input pulley 70 (and the second transmission belt 76 stretched over the pulley) is disposed at a position higher than the drive sprocket 60. The corn straw 14 transported by the corn straw transport chain 12 is passed to the waste transporting chain 19 so as to pass below the drive sprocket 60, so that the drive input pulley 70 ( And the second transmission belt 76) is less likely to come into contact with the cereal basket 14.

  Furthermore, in this embodiment, since the drive input pulley 70 (and the second transmission belt 76 stretched around it) is arranged to rotate in a horizontal plane, these do not take up and down width. Therefore, the drive input pulley 70 (and the second transmission belt 76) are further less likely to come into contact with the culm 14 transported by the culm transport chain 12. Moreover, as described above, the rotation shaft (drive input shaft 71a) of the drive input pulley 70 faces upward. Therefore, it is easy to arrange the drive input pulley 70 so as to rotate at a position higher than the drive sprocket 60.

  As mentioned above, in the threshing apparatus 10 of this embodiment, it arrange | positions so that the drive input pulley 70 may not contact the cereal basket 14. FIG. That is, since the drive input pulley 70 is arranged so as not to get in the way, the end on the drive sprocket 60 side (end on the upstream side in the transport direction) of the waste transport chain 19 is connected to the grain transport chain 12. And close enough. Thereby, since the delivery property of the cereals (removal) from the cereal transportation chain 12 to the waste transportation chain 19 improves, the efficiency of the whole threshing apparatus 10 can also be improved.

  Further, in the present embodiment, as shown in FIG. 7, the drive input pulley 70 is disposed at a position higher than the rotation shaft 81 of the waste transporting mechanism 18. With this configuration, when the rejection transport mechanism 18 is rotated in a direction in which the upper surface of the rejection transport mechanism 18 is brought closer to the handling cylinder 16 (when rotated in the direction indicated by the thick arrow in FIG. 7), the drive input is performed. The pulley 70 moves in a direction approaching the second relay pulley 74.

  That is, according to the configuration of the present embodiment, the second transmission belt 76 is not stretched when the evacuation transport mechanism 18 is rotated about the rotation shaft 81, so that the rotation is not hindered. Therefore, the waste transport mechanism 18 can be rotated without removing the second transmission belt 76 and the like.

  As described above, the threshing apparatus 10 according to the present embodiment includes the handling barrel 16, the culm transport mechanism 11, the drive output pulley 69, the waste transport mechanism 18, the drive sprocket 60, and the drive input pulley 70. And a second relay pulley 74 and a second transmission belt 76. The handling drum 16 includes a plurality of teeth 22 on the outer periphery, and threshs the tip of the culm 14 by rotating around a rotating shaft 17 provided substantially horizontally. The corn straw transporting mechanism 11 holds the root portion of the corn straw 14 and transports it in the direction along the rotation axis 17 of the handling cylinder 16. The drive output pulley 69 outputs the rotational driving force of the handling cylinder 16. The waste transporting mechanism 18 receives the grain straw 14 threshed by the handling cylinder 16 from the grain straw transporting mechanism 11 and transports it. The drive sprocket 60 drives the waste transport mechanism 18. A driving force for driving the driving sprocket 60 is input to the driving input pulley 70. The second relay pulley 74 is disposed between the drive transmission paths from the drive output pulley 69 to the drive input pulley 70. The second transmission belt 76 is stretched over the drive input pulley 70 and the second relay pulley 74. The drive sprocket 60 is disposed at the upstream end of the grain basket 14 in the conveyance direction in the longitudinal direction of the waste conveyance mechanism 18. Further, the waste transporting mechanism 18 is configured to receive the wheat straw 14 from the rice straw transporting mechanism 11 so as to pass under the drive sprocket 60. The drive input pulley 70 and the second transmission belt 76 are disposed at a position higher than the drive sprocket 60.

  By disposing the drive input pulley 70 (and the second transmission belt 76) at a position higher than the drive sprocket 60, the waste transporting mechanism 18 receives the wheat straw 14 (waste waste) from the rice straw transporting mechanism 11, The drive input pulley 70 (and the second transmission belt 76) does not get in the way. Therefore, compared with the conventional structure, as a result of being able to make the rejection conveying mechanism 18 and the grain conveying mechanism 11 approach, it is possible to improve the transferability of the wheat straw 14 from the kernel conveying mechanism 11 to the waste conveying mechanism 18. Can do.

  Moreover, in the threshing apparatus 10 of this embodiment, the 2nd transmission belt 76 is arrange | positioned so that the circulation drive may be carried out in a substantially horizontal surface.

  Thereby, the 2nd power transmission belt 76 can be arranged compactly in the up-and-down direction. Therefore, since the drive input pulley 70 does not get in the way, the waste conveying mechanism 18 and the grain conveying mechanism 11 can be brought closer to each other. As a result, the rice straw 14 from the grain conveying mechanism 11 to the waste conveying mechanism 18 is moved. Delivery performance can be further improved.

  Moreover, the threshing apparatus 10 of this embodiment is comprised as follows. That is, the waste transporting mechanism 18 is configured to be rotatable about a rotation shaft 81 provided in a direction substantially parallel to the transporting direction of the grain straw 14 by the waste transporting mechanism 18. The drive input pulley 70 is disposed at a position higher than the rotation shaft 81. Then, by rotating the reject conveying mechanism 18 in a direction in which the drive input pulley 70 is brought closer to the second relay pulley 74, the grain straw 14 being conveyed by the reject conveying mechanism 18 is opened. The

  That is, when the culm 14 is clogged in the waste transporting mechanism 18, the clogged stalk can be removed by rotating the waste transporting mechanism 18. At this time, since the drive input pulley 70 moves in a direction approaching the second relay pulley 74, the second transmission belt 76 is not pulled during the rotation. Therefore, the waste transport mechanism 18 can be rotated without removing the second transmission belt 76.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  The threshing apparatus of the present invention can be applied to various threshing apparatuses such as a stationary threshing apparatus, a threshing apparatus with a built-in harvester, and a threshing apparatus with a built-in combine.

  The first endless annular body and the second endless annular body are not limited to the transmission belt, and may be an endless chain. In this case, the drive output wheel, the drive input wheel, the first relay wheel, and the second relay wheel can be configured as sprockets instead of pulleys.

  In addition to the first relay pulley 73 and the second relay pulley 74, another relay pulley may be arranged in the drive transmission path from the drive output pulley 69 to the drive input pulley 70.

DESCRIPTION OF SYMBOLS 10 Threshing apparatus 11 Grain trough conveyance mechanism 16 Handling drum 17 Rotating shaft 18 Discharge conveyance mechanism 22 Teeth handling 60 Drive sprocket (reduction drive wheel)
69 Drive output pulley (drive output wheel)
70 Drive input pulley (drive input wheel)
74 Second relay pulley (relay wheel)
76 Second transmission belt (endless ring)
81 Rotating shaft

Claims (3)

A handling cylinder for threshing the tip of the cereal by rotating around a rotating shaft provided substantially horizontally with a plurality of teeth on the outer periphery,
A corn straw transport mechanism that holds the root portion of the corn straw and transports it in a direction along the rotation axis of the handling cylinder;
A drive output wheel for outputting the rotational driving force of the barrel;
A waste transporting mechanism for receiving and transporting cereals threshed by the handling cylinder from the cereal transporting mechanism;
A waste driving wheel for driving the waste transport mechanism;
A drive input wheel to which a driving force for driving the exclusion drive wheel is input;
A relay wheel disposed between a drive transmission path from the drive output wheel to the drive input wheel;
An endless annular body spanned between the drive output wheel and the relay wheel;
With
The waste drive wheel is arranged at the end of the waste transport mechanism upstream in the longitudinal direction of the waste transport mechanism,
The waste transporting mechanism is configured to receive the rice straw from the grain transporting mechanism so as to pass under the waste driving wheel.
The threshing device, wherein the drive input wheel and the endless annular body are arranged at a position higher than the squeezing drive wheel. The threshing device according to claim 1,
The threshing apparatus, wherein the endless annular body is arranged to circulate and drive in a substantially horizontal plane. A threshing apparatus according to claim 1 or 2,
The waste transporting mechanism is configured to be rotatable around a rotational shaft provided in a direction substantially parallel to the grain transporting direction by the waste transporting mechanism,
The drive input wheel is disposed at a position higher than the rotation shaft,
The cedar conveying mechanism is rotated in a direction to bring the driving input wheel closer to the relay wheel, thereby opening the cereals that are conveyed by the exclusion conveying mechanism. Threshing device to do.

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