JP2019004845A - Combine - Google Patents

Abstract

To provide a combine desired so as to prevent grain culm from winding and depositing near a drive wheel.SOLUTION: A combine includes a transport device for transporting the grain culm harvested in the reaping unit of a machine body front part to the rear of a machine body. The transport device includes a cylindrical case 31 for grain culm conveyance, a boss member 37 fixed while penetrating sideways to the case 31, a drive shaft 33 erected in the inside of the case while being inserted inside the boss member 37, and a drive wheel 35 for transport drive provided while being adjacent to an end at the side of the case inside of the boss member 37 in the inside of the case 31 and supported to the drive shaft 33 in an integrally rotatable manner. A tubular part 64 is provided that projects toward the boss member 37 side while having an interval in a radial direction to the boss member 37 at the side face of the drive wheel 35 and being overlapped in the shaft core direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a combine provided with a conveying device that conveys a harvested cereal crop harvested by a harvesting portion at the front of the aircraft toward the rear of the aircraft.

  The transport device includes a cylindrical case, and a drive shaft is provided inside the case on the lower side in the transport direction, and drive wheels for transport driving are spaced in the axial direction of the drive shaft. A pair of drive sprockets as a body are provided, and a pair of endless rotating chains are wound around the pair of driving sprockets and a driven wheel on the upper side in the conveying direction, and a plurality of conveying members are formed across the pair of endless rotating chains. Is provided in a state where it is installed. Further, the boss member is fixed in a state of penetrating laterally through the case, and the drive shaft is installed inside the case in a state of being inserted into the boss member.

  The drive sprocket is supported by the drive shaft so as to be integrally rotatable, and is provided in a state adjacent to the end portion of the boss member inside the case inside the case, and a circumferential groove is formed on the side surface of the drive sprocket. The end of the boss member was provided in a state of entering the circumferential groove (for example, see Patent Document 1).

JP2015-35984A

  In the above-described conventional configuration, when any of the harvested corn straw that is conveyed by the conveying device is caught by the driving wheel and carried around, the corn straw is carried around while moving along the outer peripheral surface of the boss member. It will be. However, since the boss member is in a fixed state, there is a possibility that a long culm wraps around and accumulates on the outer peripheral surface of the boss member due to sliding resistance with the culm that moves on the outer peripheral surface. In addition, the fixed boss member and the side surface of the rotating drive sprocket face each other, and a gap is formed between them, so that there is no waste dust between the boss member and the drive shaft through this gap. There is a risk of trapping and depositing around the drive shaft.

  Therefore, it has been desired to be able to avoid the accumulation and accumulation of cereal grains near the drive wheel.

The characteristic configuration of the combine according to the present invention is as follows:
A transport device is provided for transporting the cereals harvested by the harvesting part at the front of the aircraft to the rear of the aircraft,
In the transfer device,
A cylindrical case for conveying cereals, a boss member fixed in a state penetrating laterally in the case, and a drive shaft erected inside the case in a state of being inserted into the boss member; Provided in a state adjacent to the end portion of the boss member on the inside of the case inside the case, and provided with a driving wheel body for transport driving supported rotatably on the driving shaft,
A cylindrical portion is provided on the side surface of the drive wheel body so as to protrude toward the boss member while being spaced from the boss member in the radial direction and overlapping in the axial direction.

  According to the present invention, the drive wheel body is provided in a state adjacent to the end portion of the boss member. However, since the cylindrical portion protruding toward the boss member side is provided on the side surface of the drive wheel body, Even when the cocoon is caught by the drive wheel and is rotated around, the long cereal is wound around the outer peripheral portion of the cylindrical portion and does not enter between the boss member and the drive shaft.

  Since the cylindrical portion rotates integrally with the drive wheel body and is radially spaced from the boss member, the cereals wound around the outer peripheral portion of the cylindrical portion are separated from the boss member. It will be in the state which rotates continuously with a cylindrical body in a state. If it is rotating in that state, it is avoided that the cereals circulating around the outer periphery of the cylindrical body are transported and stayed together with other cereals that are sequentially conveyed. As a result, it was possible to avoid the cereal wrapping around the drive wheel body and accumulating.

  In the present invention, in the region where the boss member and the cylindrical portion overlap in the axial direction, either one or both of the boss member and the cylindrical portion are directed toward the other side in a state along the radial direction. It is preferable that the extending hook-like portion is formed to protrude.

  According to this configuration, in a region where the boss member and the cylindrical portion overlap in the axial direction, if the culm enters through the gap, the culm may be wound around the fixed boss member. is there. Therefore, in this configuration, since the hook-shaped portion extending toward the other side is formed in the region where the boss member and the cylindrical portion overlap in the axial direction, the grain is passed through the gap between the boss member and the cylindrical portion. There is less risk that the koji will enter, and there is less risk that the koji will be clogged between the boss member and the tubular portion.

  In the present invention, in any one or both of the boss member and the tubular portion, it is preferable that a recessed portion into which the hook-like portion enters is formed at a location where the counterpart hook-like portion is adjacent. is there.

  According to this configuration, since the recessed portion into which the flange portion enters is formed at a location where the counterpart flange portion is close, the flange portion is formed at the location where the boss member and the cylindrical portion overlap in the axial direction. The narrow portion and the recessed portion form a labyrinth-like narrow intrusion portion, which makes it more difficult for the cereal to enter the gap between the boss member and the tubular portion.

In the present invention, a collar is provided at a position located on the shaft end side of the driving wheel body in the outer peripheral portion of the driving shaft,
When the drive wheel body is positioned in the axial direction by tightening the collar from the shaft end side of the drive shaft in a state where the side opposite to the shaft end side of the drive wheel body is received and supported. Is preferred.

  According to this configuration, when the collar is tightened by, for example, a bolt from the shaft end side of the drive shaft, the drive wheel body that is received on the opposite side is pushed by the collar and positioned in the axial direction. This can be dealt with by tightening from the shaft end side of the drive shaft, and since an excessive force is not applied to the drive shaft, positioning work can be performed in a state where there is no possibility of damaging the drive shaft.

In the present invention, the driving wheel body includes a meshing engagement portion having a plurality of meshing protrusions located radially outside and a width wider in the axial direction than the meshing engagement portion located radially inside. And a proximal end of
A bolt insertion hole penetrating in the radial direction is formed in the base end portion,
It is preferable that the tip of the bolt inserted into the bolt insertion hole is in contact with the outer peripheral surface of the drive shaft so that the drive wheel body is positioned in the axial direction.

  According to this structure, the front-end | tip of the volt | bolt which penetrates a base end part to radial direction contacts the outer peripheral surface of a drive shaft, and a driving wheel body is positioned in an axial direction by the frictional resistance. No special drilling along the radial direction is required on the outer peripheral surface of the drive shaft, and it can be fixed by contacting at an arbitrary position in the axial direction. Further, since the drive shaft is not drilled, there is little risk of breakage of the drive shaft, and durability is improved.

It is a whole side view of a combine. It is a whole top view of a combine. It is a vertical side view of a cereal conveyance device. It is a cross-sectional top view of a drive shaft arrangement | positioning part. It is a cross-sectional top view of a drive shaft arrangement | positioning part. It is a disassembled perspective view which shows the attachment structure of a winding prevention cover. It is a vertical side view of a drive shaft arrangement part. It is a longitudinal cross-sectional view of a link member arrangement | positioning part. It is a side view which shows the tension state of a relay transmission chain. It is sectional drawing of a guide ring body. It is a partial side view of a conveyance case. It is a top view of a drive shaft arrangement part. It is a vertical side view of a winding prevention member arrangement part. It is a top view of the winding prevention member arrangement | positioning part of another embodiment. It is a top view of the winding prevention member arrangement | positioning part of another embodiment. It is a top view of the winding prevention member arrangement | positioning part of another embodiment. It is a vertical side view of the winding prevention member arrangement | positioning part of another embodiment. It is a front view of the winding prevention member arrangement | positioning part of another embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a normal combine as a combine according to the present invention will be described based on the drawings.

〔overall structure〕
As shown in FIGS. 1 and 2, this combine has a traveling machine body 2 including a pair of left and right crawler traveling devices 1, an axial threshing device 3 and a grain storage grain tank 4 arranged in parallel on the left and right. The operation unit 5 is provided in front of the grain tank 4. The threshing device 6 is connected to the front portion of the threshing device 3 so as to convey the harvested cereal rice cake so as to swing up and down around the horizontal axis P1. The cutting part 7 having At the rear of the traveling machine body 2, a grain discharging device 8 that discharges the grains stored in the grain tank 4 to the outside is provided.

  In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the aircraft advancing direction in the working state, and when defining the left-right direction of the aircraft, the left-right direction is defined as viewed in the aircraft advancing direction. . That is, the direction indicated by the reference symbol (F) in FIGS. 1 and 2 is the front side of the aircraft, and the direction indicated by the reference symbol (B) in FIGS. The direction indicated by reference sign (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference sign (R) in FIG. FIG. 1 is a side view of the entire ordinary combine as viewed from the left outer side of the traveling machine body 2.

  An engine 10 is mounted below the driver seat 9 in the driver 5, and a transmission case 11 and a main transmission (not shown) are provided below the front of the fuselage. The traveling transmission system is configured such that after the power of the engine 10 is shifted by the main transmission, it is transmitted to the left and right crawler traveling devices 1 via a transmission mechanism (not shown) in the transmission case 11. The power of the engine 10 is transmitted to the cereal conveying device 6, the cutting unit 7, the threshing device 3 and the like via a transmission mechanism (not shown).

  As shown in FIG.1 and FIG.2, the cutting part 7 forms the backplate 13 and bottom face which form a back surface in the cutting part frame 12 comprised by connecting a square pipe, an angle material of L-shaped cross section, etc. The frame structure which connected each of the conveyance deck 14 and the left-right paired side plate 15 which forms the left-right side surface is comprised. A clipper type mowing device 16 is provided across the left and right side plates 15 along the front end of the transfer deck 14. A lateral feed auger 17 is provided at an upper position on the rear side of the transport deck 14 to transport the harvested cereals toward the middle in the lateral direction of the machine body. The lateral feed auger 17 is spanned across the left and right side plates 15 and is rotatably supported. A rotary reel 18 for scraping the planted crops backward is provided on the upper front side of the cutting unit 7.

  The lateral feed auger 17 is a pair of left and right screw blades that are laterally fed to the outer periphery of a large-diameter auger drum 19 toward the front end portion of the grain feeder 6 as it rotates. 20 is provided. Further, in the lateral feed auger 17, rod-shaped scrambling bodies 21 that move out and retract from the auger drum 19 as the lateral feed auger 17 rotates are provided at a plurality of locations in the circumferential direction at the location facing the front end entrance of the grain feeder 6. Is provided.

[Rotating reel]
The rotating reel 18 will be described.
The rotary reel 18 includes a drive shaft 23 rotatably supported at the distal ends of a pair of support arms 22, 22, and a pentagonal reel frame 24 in a side view provided to be rotatable integrally with the left and right ends of the drive shaft 23. A tine support portion 25 made of a circular pipe material arranged in an arrangement so as to be positioned one by one over the five top portions of the pair of left and right reel frames 24, and located on the right side and offset with respect to the axis X 1 of the drive shaft 23. A pentagonal auxiliary rotating body 26 and the like that are rotatable around the centered axis X2 are provided. The tine support portion 25 is provided with a plurality of tines 27 (scraping claws) for scraping the cereal at intervals in the lateral direction.

  As shown in FIG. 1, link members 28 that are rotatably supported are provided between the tops of the auxiliary rotating body 26 and the tops of the right reel frame 24. The link member 28 is supported so as to be relatively rotatable with respect to each top portion of the auxiliary rotating body 26, and is connected to each top portion of the reel frame 24 so as to rotate integrally with the tine support portion 25. The link member 28 moves in parallel while maintaining the same posture even when the drive shaft 23 rotates. As a result, the plurality of tines 27 are configured to maintain the posture of extending downward from the tine support portion 25 regardless of the rotation of the rotary reel 18.

  As shown in FIG. 8, the link member 28 includes a first shaft support portion 28 a that is rotatably supported by a rotation support portion 29 formed on each top portion of the auxiliary rotator 26, and each of the right reel frame 24. Each of the second shaft support portion 28b connected to the tine support portion 25 and the arm portion 28c connecting them is supported by a rotation support portion 30 formed on the top portion by casting or forging. It is formed by integral molding. By comprising in this way, while improving intensity | strength, the improvement of an assembly | attachment precision can be aimed at.

[Grain conveying device]
The cereal conveyance device 6 will be described.
As shown in FIG. 1, the grain feeder 6 is provided in a state extending from the rear end part of the cutting part 7 located on the lower side of the front part of the machine body to the grain input part of the threshing device 3 located on the upper side of the rear part of the machine body. As shown in FIG. 3, there are provided a rectangular tube type transport case 31 for transporting the cereal and a chain rotation type transport mechanism 32 located inside the transport case 31.

The chain rotation type transport mechanism 32 will be described.
As shown in FIG. 3, a lateral drive shaft 33 is installed on the rear side of the carrier case 31, and a lateral driven shaft 34 is installed on the front side of the carrier case 31. The drive shaft 33 is provided with a drive sprocket 35 as a pair of drive wheels for transport driving at intervals in the axial direction. On the radially outer side of the driven shaft 34, a large-diameter drum-shaped driven wheel body 36 is provided so as to rotate integrally with the driven shaft 34.

If it demonstrates, as shown in FIG. 4, the boss | hub member 37 is attached in the fixed state in the state which penetrates the side wall 31A of the right-and-left both sides in the conveyance case 31 sideways. And the drive shaft 33 is constructed in the inside of the conveyance case 31 in the state penetrated by the inside of the boss | hub member 37 of both right and left sides. A drive sprocket 35 is provided inside the transport case 31 so as to be adjacent to an end portion of the boss member 37 on the case inner side. The drive shaft 33 is formed in a hexagonal cross section, and a drive sprocket 35 having a hexagonal fitting hole that fits into the drive shaft 33 can be integrally rotated at intervals along the axial direction. It is fitted externally.

  As shown in FIG. 3, an endless rotating chain 38 as a pair of endless rotating bodies is wound around the pair of driving sprockets 35 and the driven wheel body 36. A plurality of conveying members 39 are installed horizontally on the pair of endless rotating chains 38 with a predetermined pitch.

  As shown in FIG. 4, the left and right boss members 37 are supported by the front wall portion of the threshing device 3 through a pair of left and right fulcrum brackets 40 so as to be rotatable around the horizontal axis P1. And as shown in FIG. 1, since the conveyance case 31 and the boss | hub member 37 are connected integrally, and the cutting part 7 is connected with the conveyance case 31, the grain ridge conveying apparatus 6 containing the cutting part 7 is included. The whole is supported by the front wall portion of the threshing device 3 so as to be swingable up and down around the horizontal axis P1. A hydraulic cylinder 42 is pivotally connected over the machine body frame 41 and a lower middle portion of the transport case 31, and the grain feeder 6 can be moved up and down around the horizontal axis P <b> 1 by the operation of the hydraulic cylinder 42.

  As shown in FIG. 4, the drive shaft 33 protrudes laterally outward on the left and right sides of the transport case 31, and includes an input transmission pulley 43 to which power from the engine 10 is transmitted to the left protrusion. The right protrusion is provided with an output sprocket 44 for transmitting power to each part of the cutting unit 7 and a reverse transmission pulley 45 for inputting reverse power.

  When the drive shaft 33 is rotationally driven by the power from the engine 10, the pair of endless rotating chains 38 are rotated accordingly, and the harvested cereal grains harvested by the harvesting unit 7 are directed toward the rear of the machine body. Transport. At this time, as shown in FIG. 3, the rotation direction of the endless rotation chain 38 is set so as to convey the harvested cereal meal along the linear movement path K located below the endless rotation chain 38. When the conveying member 39 provided in the endless rotating chain 38 moves along the linear movement path K, the conveying member 39 pushes and moves the harvested cereal meal while being placed and supported on the bottom surface 31B of the conveying case 31. Transport toward After being transported to the transport end by the endless rotating chain 38, the harvested cereal meal is discharged from the transport end toward the inside of the threshing device 3.

  Therefore, power is transmitted to the drive shaft 33 and the pair of endless rotating chains 38 rotate integrally in the same direction, whereby the crop supplied from the cutting unit 7 is transported in the transport case 31 by the transport member 39. A chain rotation type transport mechanism 32 that is transported and supplied to the threshing device 3 is configured.

  As shown in FIGS. 4 and 9, a relay transmission chain 47 that transmits power from the output sprocket 44 to the input sprocket 46 for the cutting unit 7 is provided on the outer side of the right side wall 31 </ b> A of the transport case 31. . The relay transmission chain 47 is stretched along the conveyance direction in the conveyance case 31 and is guided by being sandwiched from both the upper and lower sides by a plurality of guide ring bodies 48 and 49 so that the relay transmission chain is vertically moved. The vibration is suppressed. One of the upper and lower guide ring bodies 48, 49 is made of a metal sprocket, and the other guide ring body 49 is made of a resin roller made of a synthetic resin material. As shown in FIG. 10, the guide wheel body (resin roller) 49 is provided with a locking portion 49a for locking to the relay transmission chain 47 at the center in the width direction, and a hook portion for preventing the locking at both sides in the width direction. 49b is formed.

  A configuration for preventing winding of straw scraps at an intermediate portion in the axial direction of the drive shaft 33 sandwiched between the left and right drive sprockets 35 will be described.

  As shown in FIGS. 4 and 5, in a state where the drive shaft 33 is externally fitted to the drive shaft 33 via a bearing 50 so as to be relatively rotatable at a position adjacent to the intermediate side in the lateral direction of each of the pair of drive sprockets 35. A shaped member 51 is provided. The cylindrical member 51 includes a large-diameter covering portion 51a that covers the outer side of the base end portion 35B that is wide in the axial direction of the drive sprocket 35, and a shaft extrapolation portion 51b that is extrapolated to the drive shaft 33 via a bearing 50. And an inner cover 51c that covers the inner side in the left-right direction, and these are integrally formed of a metal material. A small-diameter cylindrical portion 51d having a narrow width in the axial direction is formed at a location near the drive shaft 33 in the inner cover portion 51c. The outer peripheral part of the cylindrical member 51 is formed on a smooth surface so that there is less possibility of trapping of scraps and the like.

  A connecting member 52 that connects the pair of cylindrical members 51 is provided. As for the connection member 52, the attachment surface of the both ends of an axial center direction is bolt-connected with each cylindrical member 51. As shown in FIG. A winding prevention cover 53 is fixed to the connecting member 52.

  As shown in FIGS. 6 and 7, the wrapping prevention cover 53 is composed of a plurality of divided cover bodies divided in the circumferential direction. Specifically, it is divided into two parts, a first divided cover body 54 and a second divided cover body 55. The first divided cover body 54 includes a semicircular arc-shaped portion 54a that is extrapolated to the outer peripheral portion of the small-diameter cylindrical portion 51d of the cylindrical member 51, and a pair of extended extensions that extend tangentially from the arc-shaped portion 54a. The section 54b is formed in a substantially U-shaped cross section. The second divided cover body 55 is formed in a substantially U shape when viewed in the axial direction. The first divided cover body 54 and the second divided cover body 55 are positioned so that both end portions in the circumferential direction overlap with each other and cover the outer peripheral portion of the drive shaft 33 to form a wrapping prevention cover 53. The winding prevention cover 53 covers not only the drive shaft 33 but also the outer peripheral portion of the connecting member 52. As shown in FIG. 7, the wrapping prevention cover 53 is formed on an inclined surface that is located at a lower position with respect to the linear movement path K as it is closer to the conveyance start end side.

  As shown in FIGS. 3, 4, and 7, a cylindrical tubular frame 56 is formed across the left and right side walls 31 </ b> A of the transport case 31 at a position closer to the drive shaft 33 than the drive shaft 33. It is installed and supported in a sideways posture.

  The anti-winding cover 53 is prevented from rotating by a plate-like connecting portion 57 in a vertically oriented posture provided across the anti-winding cover 53 and the cylindrical frame 56. The anti-winding cover 53 is supported by the transport case 31 in a state of being prevented from rotating. If it demonstrates, as shown in FIG.6, 7, the connection part 57 is provided with the 1st connection body 58 and the 2nd connection body 59 which are formed with a plate-shaped body. The first connection body 58 is integrally fixed to the second divided cover body 55 by welding at the center position in the axial direction, and the second connection body 59 and the first connection body 58 are bolted. . An arc-shaped recessed portion 60 is formed at a location facing the cylindrical frame 56 along the arc-shaped outer peripheral surface of the cylindrical frame 56. The arcuate recess 60 is provided in contact with the outer surface of the cylindrical frame 56.

  As shown in FIGS. 3 and 4, the transport case 31 is provided with a cylindrical frame 56 at a location away from the drive shaft 33 instead of a configuration in which the cylindrical frame 56 is provided at a location close to the drive shaft 33. A mounting hole 61 is formed so as to be able to. Although not shown, when replacing the cylindrical frame 56, the flange portion 56 a provided on the cylindrical frame 56 is removed and removed laterally to the side, and the insertion flange portion 56 a is attached to the mounting hole 61. It can respond. The mounting hole 61 may be covered with a lid when not in use. Further, when the cylindrical frame 56 is replaced, it is necessary to change the shape of the connecting portion 57.

The drive sprocket 35 provided on the drive shaft 33 will be described.
As shown in FIG. 5, the drive sprocket 35 includes a meshing engagement portion 35A having a plurality of meshing protrusions 35a located on the radially outer side, and a shaft located on the radially inner side than the meshing engagement portion 35A. A base end portion 35B that is wide in the core direction is provided. A bolt insertion hole 62 penetrating in the radial direction is formed in the base end portion 35 </ b> B, and the bolt 63 is mounted in a state where the tip end portion is in contact with the outer peripheral surface of the drive shaft 33 while being inserted into the bolt insertion hole 62. ing. The front end portion of the bolt 63 is formed on a flat surface, and the drive sprocket 35 is positioned in the axial direction by friction while being applied to the outer peripheral surface of the drive shaft 33.

  As shown in FIG. 7, the meshing projection 35a of the meshing engagement portion 35A has a larger width in the circumferential direction of the projection portion, and a gap as much as possible is provided between the endless rotating chain 38 and the meshing engagement portion 35A. It is configured to be small so that the cereals are hard to be pinched.

  As shown in FIGS. 4 and 5, the side surface on the shaft end side of the drive sprocket 35 protrudes toward the boss member 37 while being spaced from the boss member 37 in the radial direction and overlapping in the axial direction. A cylindrical cylindrical portion 64 is provided in a state of extending integrally. In addition, an annular hook-shaped portion 65 that rises toward the inner peripheral portion of the cylindrical portion 64 is integrally fixed to a portion of the outer peripheral portion of the boss member 37 that is covered by the cylindrical portion 64. ing. Further, in the inner peripheral portion of the cylindrical portion 64, a recessed portion 64a into which the flange portion 65 enters is formed at a location where the flange portion 65 is close. The recessed portion 64a is formed over the entire area in the circumferential direction, and has a shape that is partially cut out and recessed at the shaft end. By configuring in this way, it prevents the scraps and the like from entering through the gap between the boss member 37 and the drive sprocket 35.

  The left and right shaft end portions of the drive shaft 33 are supported by the boss member 37 via a bearing 66 so as to be rotatable. A grease nipple 67 is provided at a lateral position of the bearing 66 on the shaft end side. Oil seals 68 are provided on both the left and right sides of the bearing 66 to prevent grease from leaking outward. The oil seal 68 located on the outer end side is prevented from coming off by a retaining ring 69.

A collar 70 is provided at a position located on the shaft end side of the drive sprocket 35 in the outer peripheral portion of the drive shaft 33. One end of the collar 70 is received by the side surface of the drive sprocket 35, and the other end of the collar 70 is received by the bearing 66.

  The portion of the drive sprocket 35 opposite to the shaft end side, that is, the portion opposite to the collar 70 is received and supported by the cylindrical member 51 via the bearing 50. The tubular member 51 is received and supported by the opposite tubular member 51 via the connecting member 52. Thus, the drive sprocket 35 is positioned in the axial direction by tightening the collar 70 from the shaft end side of the drive shaft 33 in a state where the portion opposite to the shaft end side of the drive sprocket 35 is received. . Transmission shafts 43 and 45 are attached to the shaft end portion of the drive shaft 33, and the base end portions of the pulleys 43 and 45 are tightened by bolts 71 screwed from the shaft end side.

  The transmission pulleys 43 and 45 are attached to the left and right shaft ends of the drive shaft 33, respectively. When the left and right pulleys 43 and 45 are tightened by bolts 71, the pulleys 43 and 45 are connected via bearings 66, respectively. The collar 70 is tightened, whereby the left and right drive sprockets 35 are positioned in the axial direction.

  As shown in FIGS. 12 and 13, an anti-winding member 72 that prevents the cereals from being wound around the outer periphery of the cylindrical portion 64 and the boss member 37 between the drive sprocket 35 and the side wall 31 </ b> A of the transport case 31. Is provided. The anti-winding member 72 is supported by a support member 73 provided across the boss member 37 and the cylindrical frame 56. The support member 73 is formed of a substantially horizontal plate, extends from the upper end of the boss member 37 to the upper end of the cylindrical frame 56, and is welded to the upper end of the boss member 37 and the upper end of the cylindrical frame 56. It is fixed.

  The anti-winding member 72 is made of a substantially horizontal plate, and is provided wide so as to substantially cover the space between the drive sprocket 35 and the side wall of the transport case 31. The wrapping prevention member 72 is bolted and fixed to the support member 73 while being placed on the upper surface of the support member 73. The bolt insertion portion of the anti-winding member 72 is formed by a long hole-like concave portion, and the lateral position can be finely adjusted.

  A portion on the rear side of the wrapping prevention member 72, that is, the boss member 37 side extends to the same position as the end of the support member 73, and prevents the cereals from being wound around the outer periphery of the boss member 37. 74 and a second action part 75 that extends to a position close to the outer peripheral part of the cylindrical part 64 and prevents the cereals from being wound around the outer peripheral part of the cylindrical part 64.

  By providing such a wrapping prevention member 72, even if the cereals are rotated by the drive sprocket 35, not only the outer peripheral portion of the boss member 37 but also the outer peripheral portion of the cylindrical portion 64. , Can prevent cereals from winding up and accumulating.

[Another embodiment]
(1) In the above embodiment, the wrapping prevention member 72 acting on the outer peripheral portion of the boss member 37 is supported by the support member 73 fixed to the boss member 37 and the cylindrical frame 56, and the drive sprocket 35. However, instead of this configuration, the following configurations (1-1) to (1-4) may be used instead of the configuration. Good.

(1-1)
As shown in FIG. 14, the wrapping preventing member 72 is formed of a substantially L-shaped plate body, and includes a vertical portion 76 extending along the side wall 31 </ b> A of the transport case 31 and a horizontal portion 77 in a horizontal posture. The part 76 is configured to be fixed to a support stand 78 attached to the side wall 31 </ b> A of the transport case 31. That is, the support base 78 is integrally attached to a location located between the boss member 37 and the cylindrical frame 56 on the side wall 31 </ b> A of the transport case 31. Although not described in detail, the support stand 78 has recesses formed along the outer peripheral surfaces of the boss member 37 and the cylindrical frame 56 at both front and rear end portions, and both upper and lower end portions are integrated with the side wall 31A by welding. Connected. The longitudinal portion 76 of the anti-winding member 72 is fixed to the support base 78 by bolt fastening. The lateral portion 77 of the wrapping preventing member 72 has the same configuration as that of the above embodiment.

(1-2)
As shown in FIG. 15, the wrapping prevention member 72 includes a vertical portion 76 and a horizontal portion 77, and the configuration in which the vertical portion 76 is fixed to the support base 78 is the same as (1-1) above. However, the first action portion 74 of the laterally facing portion 77 of the wrapping prevention member 72 is configured to become narrower gradually toward the cylindrical frame 56 side. If comprised in this way, the cereals by which winding was cancelled | released by the winding prevention member 72 would fall below through the space formed in the narrow part in the sideways part 77, and will be conveyed to the threshing apparatus 3. FIG.

(1-3)
As shown in FIG. 16, the wrapping preventing member 72 includes a vertical portion 76 and a horizontal portion 77, and the configuration in which the vertical portion 76 is fixed to the support base 78 is the same as (1-1) above. However, a hump 79 made of a soft material such as cloth is provided at a position facing the drive sprocket 35 in the first action portion 74 of the wrapping prevention member 72. The hump 79 is fixed by being sandwiched by the contact plate 80 from the upper side, and is provided in a state of being inclined outward in the radial direction toward the drive sprocket 35.

(1-4)
As shown in FIG. 17, the wrapping preventing member 72 includes a vertically oriented portion 76 and a horizontally oriented portion 77, and the configuration in which the vertically oriented portion 76 is fixed to the support base 78 is the same as (1-1) above. However, there is a configuration in which the laterally facing portion 77 of the wrapping preventing member 72 is provided in an inclined posture so as to go downward as it goes to the cylindrical frame 56.

(1-5)
As shown in FIG. 18, the configuration in which the anti-winding member 72 includes the vertical portion 76 and the vertical portion 76 is fixed to the support base 78 is the same as (1-1) above, but the drive sprocket The guide surface 81 is located on the lateral side of the guide 35 and guides the waste dust and the like toward the drive sprocket 35 and flows downward toward the drive sprocket 35.

(2) In the above embodiment, in the region where the boss member 37 and the tubular portion 64 overlap in the axial direction, the boss member 37 extends radially outward toward the tubular portion 64 in a state along the radial direction. Although the hook-like portion 65 is formed so as to protrude and the concave portion 64a into which the hook-like portion 65 enters the cylindrical portion 64 is formed, instead of this configuration, the cylindrical portion 64 has a boss in a state along the radial direction. It is good also as a structure by which the hook-shaped part extended radially inward toward the member 37 is formed. Moreover, the boss | hub member 37 and the cylindrical part 64 may each be formed so that the hook-shaped part extended toward the other party may protrude. Further, in such a configuration, a recessed portion may be formed on each of the opposite sides facing the bowl-shaped portion 65, or a configuration may be adopted in which the recessed portion is not formed.

(3) In the above-described embodiment, the recessed portion 64a has a shape that is notched and recessed at the shaft end portion of the drive shaft 33. Instead of this configuration, the recessed portion 64a has a shape that enters a groove shape in the circumferential direction. Also good.

(4) In the above embodiment, the drive sprocket 35 is positioned in the axial direction by tightening the collar 70 and fixed with screws. However, the drive sprocket 35 is screwed without having such a collar. It is also possible to adopt a configuration in which positioning is fixed only by the above. In this case, a positioning concave portion into which a screw enters the drive shaft may be formed. Alternatively, only the configuration in which the driving sprocket is positioned in the axial direction by tightening the collar may be employed, and the configuration may be such that no screw is provided.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a combine equipped with a conveying device that conveys the harvested cereal grains harvested by the harvesting part at the front of the aircraft toward the rear of the aircraft.

6 Conveying device 7 Cutting part 31 Case 33 Drive shaft 35 Drive wheel 35a Engagement protrusion 35A Engagement engagement part 35B Base end part 37 Boss member 62 Bolt insertion hole 64 Cylindrical part
65 bowl 70 color

Claims (5)

A transport device is provided for transporting the cereals harvested by the harvesting part at the front of the aircraft to the rear of the aircraft,
In the transfer device,
A cylindrical case for conveying cereals, a boss member fixed in a state penetrating laterally in the case, and a drive shaft erected inside the case in a state of being inserted into the boss member; Provided in a state adjacent to the end portion of the boss member on the inside of the case inside the case, and provided with a driving wheel body for transport driving supported rotatably on the driving shaft,
A combine in which a cylindrical portion is provided on a side surface of the driving wheel body so as to protrude toward the boss member in a state of being radially spaced from the boss member and overlapping in the axial direction.   In a region where the boss member and the cylindrical portion overlap in the axial direction, a hook-shaped portion extending toward the other side in a state along the radial direction is provided on one or both of the boss member and the cylindrical portion. The combine according to claim 1, wherein the combine is formed to project.   3. The combine according to claim 2, wherein a recessed portion into which the hook-shaped portion enters is formed at a location where the other hook-shaped portion is adjacent to one or both of the boss member and the cylindrical portion. A collar is provided at a position located on the shaft end side of the driving wheel body in the outer peripheral portion of the driving shaft,
The drive wheel body is positioned in the axial direction by tightening the collar from the shaft end side of the drive shaft in a state where the side opposite to the shaft end side of the drive wheel body is received and supported. Item 4. The combine according to any one of Items 1 to 3. The drive wheel body includes a meshing engagement portion having a plurality of meshing protrusions positioned on the radially outer side, and a base end portion positioned radially on the inner side and wider in the axial direction than the meshing engagement portion. Is provided,
A bolt insertion hole penetrating in the radial direction is formed in the base end portion,
5. The drive wheel body according to claim 1, wherein the drive wheel body is positioned in the axial direction by a tip of a bolt inserted into the bolt insertion hole coming into contact with an outer peripheral surface of the drive shaft. Combine.

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