JP2014008016A - Thresher for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thresher for a combine harvester, in which the surface waviness of a plant foot transporting chain included in a waste-straw transport device is suppressed to enhance a drive efficiency and to reduce noises.SOLUTION: A plant foot transporting device (81) in a waste-straw transport device (50) includes: two follower sprockets (82, 84) for winding a waste culm transferring chain (85); a drive sprocket (83) for engaging with a portion of the chain (85) on a non-transportation action side of the chain (85) to drive the chain (85); and a chain pressing member (100) arranged to confront the drive sprocket (83). The chain pressing member (100) includes: a front pushing portion (100a) for pushing a portion on the loose side of the chain (85); and a back pushing portion (100b) for pushing a portion on the tense side of the chain (85). The front pushing portion (100a) is made longer, in the moving direction of the chain (85), than the back pushing portion (100b).

Description

  The present invention relates to a threshing device mounted on a combine or the like.

  Conventionally, a slaughtering device comprising a stocker-side transport device and a tip-side transporting device, which inherits the waste after threshing from the feed chain and transports it to the rear waste disposal device, is provided at the rear of the threshing device. There is known a configuration in which the side transport device is configured to sandwich and transport the waste by the transport chain and the stockholder clamping guide rod, and the transport chain is driven by a drive sprocket provided on the transport terminal side (see Patent Document 1).

JP 2009-55827 A

  In the conventional waste disposal apparatus, the transport chain is driven by the drive sprocket on the transport end side so that the waste inherited from the feed chain is sandwiched between the lower side of the transport chain and the stock holder clamping guide rod and sent backward. As a result, the waste is securely clamped and transported, but since the transport process is long, the slack side of the transport chain undulates up and down, and there is a problem that driving efficiency decreases. In addition, there is a problem that the undulating conveyance chain hits the threshing cover located on the upper side thereof and generates noise.

  Therefore, the main problem of the present invention is to solve the above-mentioned problems.

In order to solve the above problems, the present invention is configured as follows.
That is, the invention described in claim 1 includes a feed chain (18) for supplying cereals to the handling chamber (10), and takes over the sorghum after the threshing from the conveyance end of the feed chain (18). A threshing apparatus provided with a stock transporting device (81) that includes a stock transporting device (81) that sandwiches and transports a site on the stock base side of the waste to the waste transporting device (50). The stock transporter (81) is engaged with two driven sprockets (82, 84) around which a chain (85) for waste transport is wound, and a part on the non-transport side of the chain (85). A drive sprocket (83) for driving the chain (85), and a pressing member (100) disposed to face the drive sprocket (83) and pressing the chain (85) toward the drive sprocket (83), The pressing member (100) has a drive sprocket. A front pressing portion (100a) that is positioned on the lower side of the chain (85) in the moving direction of the chain (83) and presses the loose side of the chain (85), and a chain with respect to the drive sprocket (83) (85) A rear pressing portion (100b) that is located on the upper side of the moving direction and presses a portion that becomes the tension side of the chain (85) is provided, and the front pressing portion (100a) is arranged in the moving direction of the chain (85). The threshing device is formed longer than the rear pressing portion (100b).

  Invention of Claim 2 set to the force which presses a chain (85) by the said front press part (100a) larger than the force which presses a chain (85) by a back press part (100b). The threshing device described.

  According to a third aspect of the present invention, the front side of the two driven sprockets (82, 84) that supports the driven sprocket (82) located on the lower side of the movement direction of the chain (85) and the pressing member (100). The chain rail (180) is provided, The front chain rail (180) is rotatably supported around a drive shaft (170) serving as an axis of the drive sprocket (83). Is a threshing device.

  The invention according to claim 4 is provided with a rear chain rail (181) for supporting a portion of the chain (85) conveying action side, and the chain (85) of the rear chain rail (181) on the non-conveying action side. The threshing according to claim 3, wherein a recess (181a) into which at least a part of the pressing member (100) can enter when the front chain rail (180) is rotated around the drive shaft (170) is formed in a part. Device.

  According to the first aspect of the present invention, the front pressing portion (100a) is the rear pressing portion (100b) of the pressing member (100) that presses the waste transporting chain (85) toward the drive sprocket (83). By forming it longer in the moving direction of the chain (85), it is possible to reduce the undulation of the chain (85) when driven and to smoothly drive the stock transporter (81).

  According to invention of Claim 2, in addition to the effect by invention of Claim 1, the force which presses a chain (85) by a front press part (100a) is made into the chain (85) by a back press part (100b). By setting the force larger than the force that presses the undulation, it is possible to further reduce the undulation at the loose side of the chain (85).

  According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the front chain rail (180) is rotatably supported around the drive shaft (170). By rotating the front chain rail (180), it is possible to release the pinching of the takeover portion with the feed chain (18) where clogging of the cereal is likely to occur, and this clogging can be quickly released to return to the harvesting operation. , Can improve the efficiency of harvesting work.

  Further, the pressing member (100) that rotates integrally with the front chain rail (180) has a rear pressing portion (100b) that is shorter than the front pressing portion (100a), so the front chain rail (180). It is difficult to interfere with other members when rotating the door, the rotation range of the front chain rail (180) can be set large, and the clogging removal work can be easily performed.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, when the front chain rail (180) is rotated around the drive shaft (170), at least of the pressing member (100). By forming the concave portion (181a) into which a part can enter, the rotation range of the front chain rail (180) can be set further larger, and the clogging removal work can be easily performed.

It is a left view of a combine. It is a front view of a combine. It is a top view of a combine. It is a longitudinal cross-sectional view of a combine. It is an expansion left view of a waste conveying apparatus. It is a cross-sectional view of a combine. It is an enlarged plan view of a waste conveying apparatus. It is an enlarged plan view of another waste transporting apparatus. It is an enlarged side view of a spikelet conveying apparatus. It is an enlarged plan view of the tip waste transporting device. (A) is a tip waste transporting device, (b) is a left side view of the stock transporting device. It is a left view of a conveying apparatus. It is a left view of the conveying apparatus which pulled up the front side part. It is a rear view of a conveying apparatus. It is a rear view of a combine. It is explanatory drawing of arrangement | positioning of a drive part. It is a longitudinal cross-sectional view of a combine. It is a rear view of the combine of the state which closed the dust removal guide. It is a rear view of the combine of the state which opened the dust removal guide.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in order to make an understanding easy, although it showed and demonstrated the direction for convenience, the structure is not limited by these.

  As shown in FIGS. 1 to 3, the combine is provided with a traveling device 2 composed of a pair of left and right crawlers for traveling on the soil surface below the fuselage frame 1, and on the upper left side of the fuselage frame 1. Is provided with a threshing device 3 for threshing and sorting, and a reaping device 4 for harvesting cereal grains in the field is provided on the front side of the threshing device 3. The cereals harvested by the reaping device 4 are conveyed to the threshing device 3 by the supply conveying device 8, and the grains threshed and selected by the threshing device 3 are stored in a glen tank 5 provided on the right side of the threshing device 3, The stored grain is discharged out of the machine by the discharge tube 7. Further, on the upper right side of the body frame 1, a control unit 6 having an operation seat on which an operator gets on is provided.

As shown in FIGS. 4 to 7, the threshing apparatus 3 includes a handling chamber 10 for threshing the cereal at the front upper portion, and a sorting chamber 20 for sorting the threshed grains below the handling chamber 10. I have. In addition, after the threshing that has been threshed in the handling chamber 10 is conveyed rearward by the feed chain 18, it is inherited from the feed chain 18 to the rejection conveying device 50, and further conveyed rearward by the rejection conveying device 50. Then, it drops onto the waste disposal device 95 from the terminal end of the waste transport device 50, is cut into pieces by the waste cutter 96 of the waste treatment device 95, and is discharged outside the machine.
(Handling room)
In the handling chamber 10, a handling cylinder 12 having a plurality of handling teeth 11 is pivotally supported by a handling cylinder shaft 13 extending in the front-rear direction. A lower portion of the front plate 10A of the handling chamber 10 is formed with a cereal supply port 15 open, and a lower portion of the left plate 10B communicates with the cereal supply port 15 so as to follow the handling cylinder 12. A slot 16 is formed to open, and a discharge port 17 communicating with the handle 16 is formed in the lower left portion of the rear plate 10C. Further, a feed chain 18 is provided on the left side of the left plate 10B of the handling chamber 10 so as to follow the handling port 16 and sandwich the grain stock of the cereal that has been lifted and conveyed by the supply and conveyance device 8 and convey it backward. It has been.
(Sorting room)
A sorting room 20 is provided below the handling room 10 for sorting the threshing products leaking from the handling room 10 into grains and other swarf. An oscillating sorting device 21 is provided at the upper part of the sorting chamber 20, and a potato 25 that blows air to the oscillating sorting device 21 at the lower part of the sorting chamber 20 and the grains that leak from the oscillating sorting device 21 are collected. The first receiving rod 28 and the second receiving rod 29 for collecting the grain to which the branch raft leaking from the swing sorting device 21 is attached are provided from the front side toward the rear side. In addition, the grain collected by the first receiving bowl 28 is transferred to the Glen tank 5, and the grain collected by the second receiving bowl 29 is transferred to the second processing chamber 40.

  The swing sorting device 21 includes a transfer shelf 22 disposed above the tang 25, a fixed sheave 23 disposed on the downstream side of the transfer shelf 22, and a stroll rack 24 disposed on the downstream side of the fixed sheave 23. It is constituted by.

  The transfer shelf 22 only needs to be able to transfer the grains leaking from the handling chamber 10 to the fixed sheave 23 arranged on the downstream side. The rear portion of the transfer shelf 22 is inclined downward, and the upper surface of the transfer shelf 22 has a protrusion or Unevenness can be provided.

  The fixed sheave 23 is a sieve that sorts the grains transferred from the transfer shelf 22 or the grains that leak directly from the handling chamber 10 and foreign matters such as sawdust, and is a thin plate that is inclined so that the downstream side becomes higher. A plurality of fixed sheave members made of a body are arranged in parallel with a predetermined interval in the swing direction of the swing sorting device 21.

  The Strollac 24 is a sieve that sifts and selects grains or the like to which branch rafts or the like are attached from relatively large swarf that has not leaked from the fixed sheave 23. The swing sorting device 21 of the present embodiment includes a transfer shelf 22, a fixed sheave 23, and a stroller 24. In order to efficiently sort grains and sawdust, the fixed sheave 23, the straw A movable sheave can also be provided between the racks 24. The movable sheave is a sieve for selecting the grains transferred from the fixed sheave 23, and a sheave member made of a thin plate-like body inclined so as to be higher on the downstream side is parallel to the swinging direction at a predetermined interval. A plurality are arranged side by side.

The air outlet 26 of the tang 25 is provided with an upper air passage 26A and a lower air passage 26B which are formed up and down by an air blow 27. A spiral conveyor type first conveyor 28 </ b> A communicating with the Glen tank 5 is disposed inside the first receptacle 28 provided on the rear side of the air outlet 26, and the second receptacle 29 is provided with a second conveyor 28 </ b> A. A spiral conveyor type second conveyor 29 </ b> A communicating with the processing chamber 40 is disposed.
(Dust disposal chamber)
The right rear portion of the handling chamber 10 communicates with the dust processing chamber 30, and a dust processing cylinder 32 having a screw blade body 31 on the outer peripheral surface is pivoted in the front-rear direction inside the dust processing chamber 30. The object to be processed supplied to the dust processing chamber 30 is leaked onto the fixed sheave 23 of the swing sorting device 21 in the process of being crushed while being conveyed backward by the rotating dust processing cylinder 32. Alternatively, after reaching the end of the dust removal processing chamber 30, the dust is discharged onto the stroller 24 of the swing sorting device 21.

  As shown in FIGS. 17 to 19, a dust removal guide 34 for opening and closing the passage to the swing sorting device 21 is provided at the end of the dust removal processing chamber 30, and dust is sent to the swing sorting device 21 or directly. It can be discharged outside the machine. The dust discharge guide 34 is preferably configured to be able to be performed by an opening / closing lever provided in the control unit 6.

  The dust discharge guide 34 is opened when there are a lot of grains during dust discharge and guides the dust to the swing sorting device 21 side to improve the recovery rate of the grains. The dust guide 34 is opened and closed, for example, when the threshing processed product on the swing sorting device 21 is large, and is automatically closed by the layer thickness of the threshing processed product, or when the cereals conveyed by the feed chain 18 are large. Or close automatically.

The dust removal guide 34 is attached so as to be opened and closed on the rear wall 35 of the dust removal treatment chamber 30 and the rear plate 36 of the cover after threshing.
(Second processing room)
A second processing chamber 40 for processing and reducing the second product is provided on the front side of the dust removal processing chamber 30. In the second processing chamber 40, a second processing cylinder 42 having intermittent spiral blades 41 on the outer peripheral surface is pivoted. The second product supplied to the second processing chamber 40 is separated forwardly by the rotating second processing cylinder 42 while the grain and branch are separated. It falls on the transfer shelf 22 and merges with the object to be processed from the handling chamber 10 to be re-sorted.
(Exhaust conveyor)
As shown in FIG. 5, the waste transporting device 50 includes a head-side tip transport unit 60 that transports the head of the waste to the rear, and a stock on the stock source side that transports the stock of the waste to the rear. The original transport unit 80 is included.
(Head transfer device)
The tip transport unit 60 is located on the tip side of the tip transport device 61, the tip tip side of the tip transport device 61, and the first tip guide rod 75 whose front part extends forward, and the bottom of the tip transport device 61. The second tip guide rod 78 is located on the side of the stock and has a front portion extending forward. Moreover, in order to effectively utilize the space at the rear of the threshing device 3 and efficiently convey the waste, the tip conveying device 61 is inclined forward and downward with the drive shaft 170 as the center.

  As shown in FIG. 11A, the tip conveying device 61 has a chain 64 wound around a front driven sprocket 62 and a rear driving sprocket (driving sprocket) 63. The chain 64 is pivotally attached with a conveying lug 64A that can stand up and fall at predetermined intervals. The conveying lug 64A stands up in the conveying path below the tip conveying device 61 by a guide member of the conveying lug 64A. On the upper side of the tip conveying device 61, the conveying lug 64A falls and moves.

  In addition, when the tip of the transport lug 64A is at the front end of the transport lug 64A and the front of the suction lug fan 90 is below the center of the handling cylinder 12, the tip of the waste is transported faster, The waste supplied to the waste cutter 96 becomes the leading edge to improve the cutting performance.

  Further, when the start end portion of the second tip guide rod 78 of the tip transport device 61 is attached below the upper end of the rear plate 10C of the handling chamber 10 and the operation of the transport lug 64A is started, it does not become an obstacle to transporting the waste, but is discharged. The posture can be corrected.

  Moreover, the start end part and attachment part of the 1st tip guide rod 75 and the 2nd tip guide rod 78 are attached to a plate, and it is located under the rear board 10C of the handling chamber 10, and gradually raises the tip side toward the rear. If it comprises, the conveyance lug 64A will be acted quickly, and the tip of a waste will be rapidly extracted from the handling chamber 10, and disorder of a waste posture will be prevented.

  In the rear part of the tip transport device 61, a pair of long holes 66A are formed in a frame 65 extending from the left front part of the waste disposal device 95 to the right front in order to adjust the position of the tip transport device 61 in the vertical direction. The bracket 66 is attached. Further, as shown in FIGS. 112 and 13, the front side portion of the tip conveying device 61 can be rotated in the vertical direction around the drive shaft 170 of the rear drive sprocket 63 by a drive portion 173A such as a motor.

  The driving unit 173A disposed on the frame 65A extending from the rear left side of the tip transport device 61 and the rear plate 10C of the handling chamber 10 to the rear right side is connected by a rack and pinion joint (not shown), and the driving unit 173A rotates. Is transmitted to the tip transport device 61 via the rack and pinion joint, and rotates the tip transport device 61 in the vertical direction around the drive shaft 170. In addition, activation switches 174A and 174B for driving the driving unit 173A are provided in the control unit 6 and the handling chamber cover 10D, respectively. In addition, in order to effectively utilize the space at the rear of the threshing device 3, the arrangement of the driving unit 173A is in the vicinity of the driving shaft 170 in addition to the tip portion on the tip side of the tip transport device 61 as shown in FIG. It is also possible to place it at the tip of the stock transporter 61 via the bracket or in the vicinity of the drive shaft 170, and to prevent the retention of waste, the upper part of the drive part 173A It is preferable to attach a cover.

  As shown in FIG. 5, the tip transport device 61 is arranged so as to be inclined rearward, the front end portion of the tip transport device 61 faces below the feed chain 18 in the transport direction, and the rear portion of the tip transport device 61 is Further, it is inclined upward and gently from the inclined surface 91A of the casing 91 surrounding the suction dust exhaust fan 90. The end portion of the tip conveying device 61 faces the end portion of the inclined surface 91A, and is located in the vicinity of the front side of the shaft 90A that supports the suction dust exhaust fan 90 in a side view, and the rear plate 10C of the handling chamber 10 is It is provided slightly above the lower end portion projected from the side.

  As shown in FIG. 7 and the like, the tip transport device 61 is arranged to be inclined rearward from the front to the rear of the tip transport device 61 and away from the feed chain 18, and substantially parallel to the stock transport device 81. It is juxtaposed to. The front portion of the tip transport device 61 faces the vicinity of the discharge port 17 of the handling chamber 10, and the rear portion of the tip transport device 61 faces the front portion of the left and right intermediate portion of the upper surface 91 </ b> B of the suction dust exhaust fan 90.

As shown in FIG. 7 and the like, the rotation of the handling cylinder shaft 13 that pivotally supports the handling cylinder 12 of the handling chamber 10 is transmitted to the rear drive sprocket 63 of the tip conveying device 61.
The rotation of the engine is transmitted to the handling cylinder shaft 13 through a gear box 14 provided on the front side of the front plate 10A of the handling chamber 10, and the rotation of the handling shaft 13 extends to the rear side of the rear plate 10C of the handling chamber 10. The pulley 70A pivotally supported on the handle cylinder 13 and the pulley 70B pivotally supported on the input shaft 72A of the transmission device (gear box) 72 supported by the frame 71 provided on the left side of the dust removal treatment chamber 30 are wound. The belt is transmitted to the gear box 72 via the belt 70C. Further, the belt 70 </ b> C is provided substantially parallel to the rear plate 10 </ b> C of the handling chamber 10.

  The rotation transmitted to the gear box 72 is driven by a drive shaft 170 that pivotally supports the rear drive sprocket 63 of the tip transport device 61 whose one end is connected to the output shaft 72B of the gear box 72 and the intermediate drive sprocket 83 of the stock transport device 81. Is transmitted to the tip transport device 61 and the stock transport device 81. The tip transport device 61 and the stock transport device 81 are connected by a connecting tube 171 made of a steel pipe in which the drive shaft 170 is inserted.

  As shown in FIG. 8, in order to more efficiently pull up the tip transport device 61 and the stock transport device 81, the front transport device 61 and the stock transport device 81 are more forward than the drive shaft 170. The parts can also be connected by a connecting member 172. Note that the tip transport device 61 and the stock transport device 81 can be performed by any connection form of the connection pipe 171, the connection member 172, and the connection pipe 171 and the connection member 172.

  As shown in FIG. 5 and the like, the first tip guide rod 75 made of steel or the like faces the lower side of the feed chain 18 in the conveying direction, tilts upward and reaches the upper side of the feed chain 18, and the intermediate portion is The end portion of the inclined surface 91A that extends substantially parallel to the tip conveying device 61 and surrounds the suction dust exhaust fan 90 is faced, and the rear portion is gently rearwardly inclined downward on the upper surface 91B of the suction dust exhaust fan 90. Yes. Further, the front side portion (front portion and intermediate portion) of the first tip guide rod 75 is centered on the drive shaft 170 of the tip transport device 61 in conjunction with the vertical rotation of the tip transport device 61 by a drive unit 173B such as a motor. Can be rotated in the vertical direction. The drive unit 173B is driven by connecting an activation switch 174A provided in the control unit 6 and an activation switch 174B provided in the handling chamber cover 10D.

  The drive unit 173B disposed on the frame 65A extending from the left rear portion of the first tip guide rod 75 and the rear plate 10C of the handling chamber 10 to the right rear is connected by a rack and pinion mechanism (not shown), and the drive unit 173B. Is transmitted to the first tip guide rod 75 via the rack and pinion mechanism, and the first tip guide rod 75 is rotated in the vertical direction around the drive shaft 170. In addition, in order to arrange the drive unit 173B effectively in the space behind the threshing device 3, as shown in FIG. Similarly to the drive unit 173A of 61, the drive unit 173A can be disposed at an arbitrary position, and it is preferable to attach a cover to the upper part of the drive unit 173B in order to prevent stagnation.

  As shown in FIG. 5 and the like, the front part of the second tip guide rod 78 made of steel or the like faces below the feed chain 18 in the transport direction, tilts upward and reaches the top of the feed chain 18, and the rear part It faces the vicinity of the end portion of the inclined surface 91 </ b> A of the casing 91 of the suction dust exhaust fan 90. In addition, the front portion of the second tip guide rod 78 is inclined more slowly rearward than the inclined surface 91A of the suction dust exhaust fan 90, and the rear portion is more than the shaft 90A that supports the suction dust exhaust fan 90 in a side view. It is provided up to the rear vicinity. Further, the front side portion of the second tip guide rod 78 is rotated in the vertical direction around the drive shaft 170 of the tip transport device 61 in conjunction with the vertical rotation of the tip transport device 61 by a drive unit 173C such as a motor. Can do. The drive unit 173C is driven by connecting an activation switch 174A provided on the control unit 6 and an activation switch 174B provided on the handling chamber cover 10D.

The second head guide rod 78 and the drive unit 173C disposed on the upper surface 91B of the suction dust exhaust fan 90 are connected by a rack and pinion joint (not shown), and the rotation of the drive unit 173C is performed via the rack and pinion joint. The second tip guide rod 78 is transmitted to the second tip guide rod 78 and rotated around the drive shaft 170 in the vertical direction. In addition, in order to effectively utilize the space at the rear part of the threshing device 3, the arrangement of the driving unit 173C is not limited to the rear end part on the tip side of the second tip guide rod 75, as shown in FIG. It can be arranged at an arbitrary position in the same manner as the drive unit 173A of the device 61, and it is preferable to attach a cover to the upper part of the drive unit 173C in order to prevent stagnation.
(Stock transporter)
The stock transport unit 80 includes a stock transport device 81 and a stock gripping guide rod 88, and a support rod 89 that can stand and fall is provided on the right side of the front of the stock transport device 81. .

  As shown in FIG. 11, the stock transport device 81 includes a front driven sprocket (driven sprocket) 82, an intermediate driving sprocket (driving sprocket) 83, and a rear driven sprocket (driven sprocket) 84 that conveys a chain (chain) 85. Is wrapped around. The front driven sprocket 82 is supported by a front end portion of a front chain rail 180 integrated with the connecting pipe 171, and the rear driven sprocket 84 is a rear chain rail whose front end portion is rotatably supported by the connecting pipe 171. 181 is supported at the rear end portion. In addition, the site | part near the rear-end part of the rear side chain rail 181 is fixed to the flame | frame 183 of the threshing apparatus 3 main body side. The intermediate portion of the stock transport device 81 has a pair of long holes 87A in the frame 65 extending from the left front portion of the waste disposal device 95 to the right front in order to adjust the position of the stock transport device 81 in the vertical direction. A formed bracket 87 is provided and attached.

  In addition, the stock transport device 81 is connected to the tip transport device 61 and the connecting pipe 171 as described above, and pivotally supports the intermediate drive sprocket 83 as shown in FIGS. 12 and 13 by the drive unit 173A. The front side portion of the stock transport device 81 (portion from the transport start end of the stock transport device 81 to the intermediate drive sprocket 83) can be rotated in the vertical direction around the drive shaft 170. That is, the front side chain rail 180 integrated with the connecting pipe 171 rotates up and down around the drive shaft 170 together with the front driven sprocket 82 and the chain thruster 100 supported by the front side chain rail 180.

  As shown in FIG. 14, the tip transport device 61 and the stock transport device 81 lifted upward remove the accumulated waste and perform maintenance / inspection work of the waste transport device 50 easily. The suspension rod 89 is suspended from the handling chamber cover 10D.

  As shown in FIG. 5 and the like, the stock source transport device 81 is disposed so as to be inclined rearward and gently higher than the tip transport device 61. The front portion of the stock transport device 81 has a feed chain 18 in the transport direction. The rear part of the stock transportation device 81 faces the upper side of the waste disposal device 95.

  As shown in FIG. 7 and the like, the stock transport apparatus 81 is disposed so as to be inclined away from the feed chain 18 from the front part to the rear part of the stock transport apparatus 81. The front of the stock transporter 81 faces the vicinity of the right side of the feed chain 18, and the rear part of the stock transporter 81 extends the upper surface 91 </ b> B of the casing 91 of the suction dust exhaust fan 90, and the waste disposal device 95. It faces the right rear part.

  As shown in FIG. 5 and the like, the stock holding and holding guide bar 88 made of steel or the like is disposed on the lower side of the stock transport device 81 so as to be inclined rearward and in parallel with the stock transport device 81. , Facing the lower side of the feed chain 18 in the transport direction, tilting upward and reaching the upper side of the feed chain 18, and the rear part of the stock holding and holding guide bar 88 extends to the rear side of the intermediate part of the stock source transport device 81. It faces the upper side of the upper rotary cutter blade 96 </ b> A that forms the waste cutter 96 of the scissors processing device 95.

The front portion of the stock holding guide rod 88 extends along the right side of the feed chain 18 and faces the rear portion of the handling cylinder 12 beyond the rear plate 10 </ b> C of the handling chamber 10.
In addition, although the stock holding | grip holding | grip guide rod 88 is elastically supported by the front-and-rear support part standing from the threshing frame toward the conveyance chain 85, the back end is supported back from this threshing frame. If the support portion is provided on the overhanging frame, the waste is less likely to be entangled with the rear support portion. Alternatively, even if the rear support portion is disposed in front of the casing 91 of the suction dust exhaust fan 90, the waste is less likely to be entangled with the rear support portion.

Moreover, if a front support part is fixed to the feed chain 18 side of the left side board of a threshing machine frame, the waste which will get entangled with a front support part will decrease.
In addition, the rear support portion of the stock holding guide rod 88 is a support portion provided on the guide rod frame projecting rearward from the threshing frame, and a switching plate for opening and closing the supply port of the discharge cutter 96 is mounted on the guide rod frame. When the supply port is closed, the sewage smoothly flows backward and falls.

  Further, when the switching plate is placed on the upper surface 91B that is inclined downward and rearward of the suction dust exhaust fan 90 so as to block the supply port of the exhaust cutter 96, the exhaust does not accumulate on the upper surface 91B and smoothly flows backward and falls.

  The transfer chain 85 wound around the front driven sprocket 82 and the rear driven sprocket 84 is driven by the intermediate drive sprocket 83 pivotally attached to the drive shaft 170 from the inside to the upper side. A transfer chain 85 is pressed from above by a chain slurry (pressing member) 100 attached to the bracket 87.

  The chain slurry 100 includes a front chain slurry 100a (front pressing portion) on the front side of the intermediate drive sprocket 83 and a rear chain slurry (rear pressing portion) 100b on the rear side of the intermediate drive sprocket 83, and the front chain slurry 100a is conveyed more than the rear chain slurry 100b. The chain 85 is formed long in the conveyance direction. Further, the chain contact edge 100ac, which is the lower edge of the front chain slurry 100a, is arranged below the chain contact edge 100bc, which is the lower edge of the rear chain slurry 100b, closer to the transport chain 85, and transported by the front chain slurry 100a. The pressing force to the chain 85 is set to be stronger than the pressing force to the transfer chain 85 by the rear chain slurry 100b.

In addition, when the front chain rail 180 is rotated around the drive shaft 170, a part of the rear chain slurry 100b is formed on the upper part of the rear chain rail 181 (part facing the non-operating side portion of the transport chain 85). It enters the recess (181a).
(Suction dust exhaust fan)
As shown in FIG. 4, a suction dust exhaust fan 90 that sucks the dust generated during threshing / sorting and discharges it outside the machine is located below the waste transporting device 50 and behind the handling chamber 10. It is provided with a shaft in the left-right direction. The suction dust exhaust fan 90 is covered with a casing 91 formed by opening a dust suction port in the lower part. The casing 91 is formed by an inclined surface 91 </ b> A that covers the front side of the suction dust exhaust fan 90 and then tilts upward, and an upper surface 91 </ b> B that covers the upper side of the suction dust exhaust fan 90 and tilts horizontally or gently rearwardly downward.
(Exhaust treatment device)
On the rear side of the threshing device 3, as shown in FIG. 4, a waste disposal device 95 that pivots a plurality of waste cutters 96 in the left-right direction is arranged. The waste conveyed rearward by the waste transporting device 50 is supplied to the waste processing device 95 from the terminal end of the waste transporting device 50. The waste cutter 96 includes a pair of upper rotary cutter blades 96A and a lower rotary cutter blade 96B, and the waste supplied from the waste transport device 50 passes between the pair of rotary cutter blades 96A and 96B. After being cut finely, it is discharged out of the machine.

  The outer sides of the pair of rotary cutter blades 96A and 96B are covered with a hood, and the front side of the upper rotary cutter blade 96A is a cutting for guiding the cut waste of the cut waste to fall backward. A gutter guide plate 97 is provided. The upper portion of the cutting guide plate 97 is provided at substantially the same height as the lower portion of the upper rotary cutter blade 96A, and the lower portion of the cutting guide plate 97 is provided below the lower portion of the lower rotary cutter blade 96B.

DESCRIPTION OF SYMBOLS 3 Threshing apparatus 10 Handling room 18 Feed chain 50 Discharge conveying apparatus 61 Tip conveying apparatus 66 Bracket 81 Stock former conveying apparatus 95 Discharge processing apparatus 82 Front driven sprocket (driven sprocket)
83 Intermediate drive sprocket (drive sprocket)
84 Rear driven sprocket (driven sprocket)
85 Exclusion Chain (Chen)
88 Stock holder clamping guide 100 100 Chain thruster (pressing member)
100a Front chain thruster (front pressing part)
100ac Chain contact edge 100b Rear chain thruster (rear pressing part)
100bc Chain contact edge 170 Drive shaft

Claims (4)

  A feed chain (18) for supplying cereals to the handling chamber (10), and a waste transporting device (50) for taking over and transporting the waste after threshing from the transport end of the feed chain (18), In the threshing apparatus provided with the stock source transport device (81) that sandwiches and transports the site on the stock source side of the waste, the stock transport device (81) includes: Two driven sprockets (82, 84) around which the chain (85) for excretion conveyance is wound, and a drive sprocket for driving the chain (85) by engaging with a portion on the non-conveying action side of the chain (85) 83) and a pressing member (100) disposed to face the driving sprocket (83) and pressing the chain (85) toward the driving sprocket (83). The pressing member (100) includes a driving sprocket. (83) vs. chain (85 Located on the lower side of the moving direction and positioned on the upper side of the chain (85) in the moving direction with respect to the front pressing portion (100a) that presses the loose side of the chain (85) and the drive sprocket (83). And a rear pressing portion (100b) that presses the tension side of the chain (85), and the front pressing portion (100a) is formed longer than the rear pressing portion (100b) in the movement direction of the chain (85). Threshing apparatus characterized by the above.   The threshing device according to claim 1, wherein a force for pressing the chain (85) by the front pressing portion (100a) is set larger than a force for pressing the chain (85) by the rear pressing portion (100b).   A front chain rail (180) that supports the driven sprocket (82) located on the lower side of the chain (85) movement direction of the two driven sprockets (82, 84) and the pressing member (100); The threshing apparatus according to claim 1 or 2, wherein the front chain rail (180) is rotatably supported around a drive shaft (170) serving as an axis of the drive sprocket (83).   The chain (85) includes a rear chain rail (181) that supports a part on the conveying action side, and the front chain rail (181) is provided on the non-conveying action part of the chain (85) in the rear chain rail (181). The threshing device according to claim 3, wherein a recess (181a) into which at least a part of the pressing member (100) can enter when the 180) is rotated around the drive shaft (170) is formed.

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