JP6281604B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus.

  Conventionally, an oscillating sorting device is provided below the threshing chamber, and the oscillating sorting shelf is provided with a sheave for sorting grains from the fallen material from the threshing chamber, and provided with a cleaning means for removing swarf adhering to the sheave. A configuration in which the cleaning means is operated by a dedicated motor is known (see Patent Document 1).

JP 2012-44974 A

Since the known example requires a dedicated motor, there is a problem that a motor mounting space is required and the cost is increased.
In the present application, a scraper of a sheave is operated without a motor.

The invention described in claim 1 is provided with a supply conveying chain 13B for supplying the cereals harvested by the reaping device 4 to the threshing chamber 11 of the threshing device 3, and provided with a swing sorting shelf 20 for sorting the threshed workpieces. The swing sorting shelf 20 is provided with a sheave 23 in which a plurality of fins 27 for sorting grains and swarf are arranged side by side in the swing direction. 20 is provided with a scraper 30 that reciprocates in a direction that intersects the swinging direction of the 20 and a pair of drive transmission means 40 and 41 that are attached to a drive link member 37 that reciprocates the scraper 30 are interlocked with the drive of the supply conveyance chain 13B. and arrangement for operating with, one end of the pair of drive transmission means 40, 41, the drive gear 42 of the supply conveyor chain 13B, a point symmetry relative to the axis of the output shaft 44 as a center of rotation In the region In which was sealed the combine.
According to a second aspect of the present invention, the pair of drive transmission means 40, 41 are arranged in parallel to the side portion of the chain rail 45 that supports the supply / conveyance chain 13B, and the pair of drive transmission means 40, 41 that the other, to bypass the front of the pivot axis 46 for the outer pivot of the chain rail 45 having the starting end of the chain rail 45, and the claim 1, wherein the combine that engages with the driving link member 37 It is.
The invention according to claim 3 is the combine according to claim 2 , wherein the drive gear 42 of the supply conveyance chain 13B is configured to be detachable with respect to the output shaft 44 of the supply conveyance chain 13B.
According to a fourth aspect of the present invention, a rotary body 48 that rotates integrally with the drive gear 42 is attached to the drive gear 42, and the drive transmission means 40 is attached to a pair of attachment pins 49 provided on the outer side of the rotary body 48. 4. The combine according to claim 3 , wherein one end of 41 is locked.

According to the first aspect of the present invention, it is not necessary to provide a drive source dedicated to the scraper 30 and the cost can be reduced . When the scraper 30 reciprocates due to the rotation of the drive gear 42 of the supply conveyance chain 13B , a pair of drive transmission means 40, Since 41 is locked to a portion that is point-symmetric with respect to the axis of the output shaft 44 that is the rotation center of the drive gear 42, the rotation of the drive gear 42 can be efficiently converted into a reciprocating motion. .
In the second aspect of the invention, in addition to the effect of the first aspect of the invention, the pair of drive transmission means 40 and 41 are arranged in parallel to the side portion of the chain rail 45 that supports the supply conveyance chain 13B. The other end of the pair of drive transmission means 40, 41 is engaged with the drive link member 37 by bypassing the front of the rotation shaft 46 for rotating outside the chain rail 45 provided at the start end of the chain rail 45. Therefore, the drive transmission means 40 and 41 can be routed so as not to obstruct the opening operation of the supply / conveyance chain 13B while the end of the supply / conveyance chain 13B can be opened outward.
In the invention according to claim 3 , in addition to the effect of the invention according to claim 2, the drive gear 42 of the supply / conveyance chain 13B and the output shaft 44 of the supply / conveyance chain 13B are configured to be detachable. When 42 is detached from the output shaft 44, the drive gear 42 is rotated free, and the scraper 30 can be manually adjusted to an arbitrary position during the assembly operation of the scraper 30, the number of assembling steps can be reduced, and poor adjustment can be prevented.
In the invention of claim 4, in addition to the effect of the invention of claim 3, the pair of drive transmission means 40, 41 are provided on the mounting pin 49 provided on the outer side of the rotating body 48 that rotates integrally with the drive gear 42. Since it is locked, the rotational motion of the drive gear 42 is changed to the reciprocating motion of the mounting pin 49 of the rotating body 48, and this reciprocating motion is transmitted to the drive link member 37 via the drive transmission means 40, 41, The scraper 30 can be reciprocated.

The side view of a combine. FIG. The longitudinal side view of a threshing apparatus. The same part enlarged view. The top view of a threshing apparatus (arrangement schematic diagram of a drive transmission means). The perspective view of a swing sorting shelf. The rear view of a scraper. The partial front view of a threshing apparatus. The side view of a supply conveyance chain. The same part enlarged view. The same part top view. The same part front view. The perspective view of the opening mechanism and locking mechanism of a Glen tank. The side view of the engine vicinity. The front view. FIG.

An embodiment of the present invention will be described with reference to the drawings using an example of a combine. Reference numeral 1 denotes a combiner body frame, 2 a traveling device, 3 a threshing device provided above the body frame 1, and 4 a front side of the threshing device 3. The provided cutting device 5 is a Glen tank provided in the side part of the threshing device 3, and 6 is a control unit provided in front of the Glen tank 5.
The reaping device 4 includes a weeding device 7 for weeding cereals in a field, a pulling device 8 for causing cereals, and a cutting blade 9 for cutting the caused cereals.
The threshing device 3 is provided with a threshing chamber 11 in which a handling cylinder 10 is mounted substantially horizontally on the upper part, and the threshing supply / conveying device that supplies and conveys the culm harvested by the reaping device 4 to one side of the threshing chamber 11. There are provided a basket 13A for holding and transferring twelve grains and a supply transport chain 13B. 14 is a waste transporting device that transports the threshed waste that has been handed over from the cereal supply transport device 12.
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.

A lower side of the handling cylinder 10 is surrounded by a handling net 15, and a tang casing 16 of a tang 16 is provided below the handling net 15. Below the threshing chamber 11 is formed a wind selection chamber 18 capable of wind-selecting grains and foreign matters by blowing air from the red pepper 16, and reciprocates in the wind selection chamber 18 in the air blowing direction (front-rear direction) of the red pepper 16. A swing sorting device 21 constituted by a swing sorting shelf 20 that swings is provided.
The swing sorting device 21 is formed on the transfer shelf 22 with the start end (front end) of the swing sorting shelf 20 positioned above the hot casing 12. A sheave 23 is provided on the lower side of the transfer shelf 22 in the transfer direction.
Reference numeral 24 is a stroller provided on the lower side of the sheave 23, 25 is a first conveyor provided at a predetermined position below the swing sorting shelf 20, and 26 is a second conveyor provided on the rear side of the first conveyor 25.

Thus, the sheave 23 includes a plurality of thin plate-like fins 27 (FIG. 7) in the vertical direction arranged in parallel in the swinging direction at a predetermined interval on the front and rear sides of the frame body 28, and the lower side (rear side) in the transfer direction. ) Is provided so as to be higher.
A scraper 30 is provided at least on the sheave 23 disposed on the start end side of the sheave 23. The scraper 30 is attached to the frame body 28 together with the sheave 23, and the frame body 28 is detachably attached to the swing sorting shelf 20.
Therefore, the scraper 30 and the sheave 23 are configured to be detachable from the swing sorting shelf 20.
The deposits on the sheave 23 are removed by the scraper 30, and the gap between the fins 27 of the sheave 23 is prevented from being narrowed by the deposits, and the reduction in the grain leakage efficiency is suppressed, thereby preventing the occurrence of threshing loss. To do.

In the present embodiment, the sheave 23 provided with the fins 27 on the frame 28 is divided into front and rear, and the scraper 30 is provided on the sheave 23 on the start end side. However, the sheave 23 on the end side has the same configuration as the scraper 30. A scraper may be provided to remove the deposits.
A plurality of sliding members 31 of the scraper 30 are arranged in parallel in the left-right direction so as to be orthogonal to the fins 27 of the sheave 23. Each sliding contact member 31 is formed with a plurality of through holes (not shown) matching the cross-sectional shape of the fins 27, and the fins 27 are inserted and attached to the through holes.
Therefore, when the sliding contact member 31 moves, the deposits on the upper and lower surfaces of the fin 27 are removed.
That is, in the threshing operation of the wet cereal, swarf or the like adheres to the lower surface of the wet fin 27 during the operation and closes the gap between the fins 27, but the sliding contact member 31 attaches the lower surface of the fin 27. The kimono can be removed, the gap between the fins 27 can be secured, the grain can be smoothly dropped, the grain recovery efficiency can be improved, and the wettability can be improved.

The sliding contact member 31 of the scraper 30 is configured to reciprocate in the direction intersecting the swing direction of the swing sorting shelf 20.
A mounting portion 32 is provided below each sliding contact member 31. The attachment portion 32 of each sliding contact member 31 is connected by a connecting member 33, and the sliding contact members 31 are reciprocated in the left-right direction while maintaining a predetermined distance from each other.
A vertical attachment shaft (engagement shaft) 34 is attached to any one of a plurality of sliding contact members 31 connected to each other of the scraper 30, and the attachment shaft 34 is a long hole at the tip of the front and rear arms 35 in the front-rear direction. Is engaged with an engagement hole (not shown) formed by the above. The left and right intermediate portions of the left and right arms 36 in the left and right direction are fixed to the base portion of the front and rear arms 35, and the front and rear arms 35 and the left and right arms 36 constitute a drive link member 37 that drives the sliding contact member 31. The drive link member 37 is pivotally attached to a predetermined portion on the front frame 28 side by a mounting shaft 38 at the left and right intermediate portions of the left and right arms 36.

A pair of drive transmission means 40, 41 such as wires are connected to the left and right ends of the left and right arms 36, respectively, and the pair of drive transmission means 40, 41 uses a drive source of a supply / conveyance chain 13B described later to drive the scraper 30. It is set as the structure made to reciprocate in the left-right direction.
Therefore, it is not necessary to provide a drive source dedicated to the scraper 30, and costs can be reduced.
In the present embodiment, the scraper 30 is alternately pushed and pulled by the drive gear 42 that is the drive source of the supply conveyance chain 13B, and the scraper 30 is reciprocated in the left-right direction, but the driven gear 43 (see FIG. 9), the scraper 30 may be operated. In the present embodiment, the drive gear 42 is arranged on the front side and the driven gear 43 is arranged on the rear side. However, the arrangement of the drive gear 42 and the driven gear 43 is reversed in the front-rear direction. It may be.

The one side drive transmission means 40 and the other side drive transmission means 41 are arranged symmetrically with respect to the axis of the output shaft 44 of the drive gear 42 (driven gear 43).
Therefore, the rotation of the drive gear 42 can be efficiently converted into a reciprocating motion.
The one-side drive transmission means 40 and the other-side drive transmission means 41 are arranged in parallel to the side portion of the chain rail 45 that supports the supply conveyance chain 13 </ b> B, and the rotation shaft 46 is located on the start end side of the chain rail 45. It is set as the structure which detours ahead and locks to the said drive link member 37. FIG.
Therefore, it is possible to route the one side drive transmission means 40 and the other side drive transmission means 41 so as not to hinder the opening operation of the supply conveyance chain 13B while making the end of the supply conveyance chain 13B open outward. .
Reference numeral 47 denotes a support member for the chain rail 45, and the rotation shaft 46 is formed at the front end of the support member 47.

The drive gear 42 of the supply / conveyance chain 13B and the output shaft 44 of the supply / conveyance chain 13B can be connected and detached (so-called detachable) by so-called coupling joining (FIGS. 5 and 10). The side drive transmission means 41 is configured to be able to be locked to the drive gear 42 detached from the output shaft 44.
Therefore, since the drive transmission means 40 and 41 can be manually adjusted to an arbitrary position during the assembly work of the drive transmission means 40 and 41, assembly man-hours can be reduced and poor adjustment can be prevented.

  That is, the base of the rotating body 48 that rotates integrally with the driving gear 42 is attached to the driving gear 42, and the mounting pin 49 is provided at the tip of the rotating body 48. One of the means 40 and the other side drive transmission means 41 is locked, and the other of the one side drive transmission means 40 and the other side drive transmission means 41 is locked from the other side of the front and rear of the mounting pin 49 and attached from the front side. The one-side drive transmission means 40 locked to the pin 49 is routed forward as it is to bypass the rotation shaft 46 which is the rotation center of the chain rail 45 outward, and from the rear side of the mounting pin 49. The locked one-side drive transmission means 40 is once routed rearward, and the guide direction (not shown) such as a guide roller is used to change the wiring direction to the front to bypass the rotation shaft 46 of the chain rail 45. One side drive transmission means 4 And each of the other side drive transmission means 41 for locking the driving link member 37.

Reference numeral 50 denotes an attachment member provided at the tip of each of the one side drive transmission means 40 and the other side drive transmission means 41, 51 denotes a support member for the one side drive transmission means 40 and the other side drive transmission means 41, and 52 denotes the chain rail 45. A connecting member 53 connected to the support member 47 is a gear case on which the output shaft 44 is mounted.
Since the output shaft 44 is mounted on the gear case, it is not originally shown in FIGS. 9 and 10, but for the sake of easy understanding, the reference numeral “44” is attached as the rotation center of the rotating body 48. However, this does not limit the configuration of the present invention.
FIG. 13 shows the open mechanism 55 of the Glen tank 5. The Glen tank 5 is divided into upper and lower parts, and a metal lower tank 56 of the Glen tank 5 is provided with a discharge spiral (not shown) for discharge. The upper tank 57 of the Glen tank 5 is formed of a synthetic resin and is configured to be openable to the outside.

A vertical frame 58 is provided at the rear portion of the upper tank 57, and a base portion of a pair of upper and lower arms 59 is attached to the vertical frame 58. The tip of the arm 59 is pivotally attached to a pair of upper and lower support members 60 by a pivot fulcrum shaft 61. The support member 60 is attached on the side of the discharge hull cylinder 62 connected to the end of the discharge helix.
Between the support member 60 and the arm 59, a lock mechanism 63 is provided for the Glen tank 5 in an open state. The lock mechanism 63 is provided with a base portion of the engagement hook 64 on the support member 60 side, and the tip of the engagement hook 64 is engaged with the arm 59 to keep the Glen tank 5 open.
Therefore, an inadvertent return operation of the Glen tank 5 can be prevented.
The engagement hook 64 is formed by bending a tip downward with a round bar member, and is engaged with an arm 59 that exceeds a so-called dead point by opening the Glen tank 5 with respect to the rotation fulcrum shaft 61 to open the Glen tank 5. Keep state.

14 to 16 are side views of the vicinity of the engine 70, and an exhaust purification device (D.O.C) 71 is provided above the threshing device 3 side of the engine 70, and the base portion of the tail pipe 72 is provided in the exhaust purification device 71. Install. In the side view, the tail pipe 72 is connected to the exhaust purification device 71 at the upper part of the vertically long vertical cylinder portion 73. The vertical cylinder portion 73 protrudes from the engine room to the Glen tank 5 side, and is guided directly below. The lower portion of the portion 73 is bent rearward to form a rear cylinder portion 74, and the rear cylinder portion 74 is positioned between the lower surface of the body frame 1 and the upper surface of the traveling device 2.
An inner portion of the rear cover 75 that surrounds the rear of the engine 70 is formed in a bent portion 76 that is inclined so as to be positioned rearward as it goes inward, and is disposed so as to cover the vertical cylinder portion 73.

Therefore, hot air from the heat source of the tail pipe 72 to the operator (operator) is suppressed, and contact with the tail pipe 72 is prevented when the glen tank 5 is opened.
In other words, the exhaust purification device 71 and the tail pipe 72 are disposed on the opposite side of the engine 70 from the cooling fan 77, and the bent portion 76 is provided by bending the inner side of the rear cover 75 so as to guide the tail pipe 72.
In the vicinity of the tail pipe 72, an inlet 79 of the tang 16 of the threshing device 3 is provided.
The suction air of the Chinese radish 16 is guided to the tail pipe 72, so that the temperature rise can be reduced, and the warm air is taken into the threshing device 3 from the intake port 79, thereby reducing the threshing loss due to dust adhering to the threshing treatment of the wet material. Can be planned.

(Operation of the embodiment)
The harvested cereals are threshed by the handling cylinder 10 rotating in the threshing chamber 11, and the threshed material leaks from the handling net 15 and enters the transfer shelf 22 at the beginning of the swing sorting shelf 20. It falls and is transferred from the transfer shelf 22 onto the sheave 23, and is sorted by the air sent from the tang 16 and the sheave 23 of the swing sorting shelf 20 that reciprocally swings in the wind selection chamber 18.
In the swing sorting shelf 20, the grains are dropped and collected from between the fins 27 of the sheave 23. Therefore, when sawdust or the like adheres to the fins 27 of the sheave 23, the gaps between the fins 27 become narrower. Although it becomes an obstacle to the fall of the grain, since the scraper 30 is provided on the sheave 23, the sliding contact member 31 that moves in the left-right direction of the scraper 30 slides on the surface of the fin 27 of the sheave 23.

  Therefore, the sliding contact member 31 of the scraper 30 can remove the scraps adhering so as to block between the fins 27 of the sheave 23 while moving, and the interval between the fins 27 of the sheave 23 is narrowed by the deposits. Is prevented, and the decline in the grain leakage efficiency is suppressed, thereby reducing the grain recovery loss.

  A vertical attachment shaft 34 is attached to any one of a plurality of sliding contact members 31 connected to each other of the scraper 30, and the attachment shaft 34 is an engagement formed by a long hole at the tip of the front / rear arm 35 in the front / rear direction. The drive link member 37 is configured to engage with the hole 60, fix the left and right intermediate portions of the left and right arms 36 in the left and right direction to the base of the front and rear arms 35, and drive the sliding contact member 31 by the front and rear arms 35 and 36. The drive link member 37 is rotatably attached to a predetermined portion on the front frame body 28 side by a mounting shaft 38 at the left and right intermediate portions of the left and right arms 36, and a pair of drive transmission means 40 such as wires are attached to the left and right ends of the left and right arms 36. , 41 are connected to each other, so that when one side of the pair of drive transmission means 40, 41 is pulled, the other side of the pair of drive transmission means 40, 41 is driven. The reach means 41 is loosened, and the left and right arms 36 of the drive link member 37 are rotated about the mounting shaft 38, whereby the front and rear arms 35 of the drive link member 37 are reciprocated to the left and right. The sliding contact member 31 is reciprocated by reciprocating 34 in the left-right direction.

Since the operation mechanism of the scraper 30 is configured to reciprocate the pair of drive transmission means 40 and 41 attached to the drive link member 37 in the left-right direction using the drive source of the supply conveyance chain 13B, the drive dedicated to the scraper 30 is used. There is no need to provide a source, and costs can be reduced.
Since the scraper 30 operates the drive link member 37 by the drive gear 42 that is the drive source of the supply conveyance chain 13B to move the scraper 30 back and forth in the left-right direction, the operation mechanism of the scraper 30 can be configured simply.
Since the one side drive transmission means 40 and the other side drive transmission means 41 are arranged symmetrically with respect to the axis of the output shaft 44 of the drive gear 42 (driven gear 43), the rotation of the drive gear 42 is efficient. It can be converted to reciprocating motion well.

The one side drive transmission means 40 and the other side drive transmission means 41 are arranged in parallel to the side portion of the chain rail 45 that supports the supply conveyance chain 13 </ b> B, and the front side of the rotation shaft 46 at the start end of the chain rail 45. Since it is configured to be detoured and locked to the drive link member 37, one end is provided so as not to obstruct the opening operation of the supply transport chain 13B while allowing the end of the supply transport chain 13B to be opened outward. The drive transmission means 40 and the other side drive transmission means 41 can be routed.
The drive gear 42 of the supply / conveyance chain 13B and the output shaft 44 of the supply / conveyance chain 13B are configured to be freely detachable (detachable) by so-called coupling joining, and the one-side drive transmission means 40 and the other-side drive transmission means 41 are output. Since the drive gear 42 separated from the shaft 44 can be locked, when the drive gear 42 is detached from the output shaft 44 of the supply conveyance chain 13B, the drive gear 42 is free-rotated, and the drive transmission means 40, When connecting 41, the sheave 23 and the drive link member 37 can be manually adjusted to arbitrary positions, the assembling work can be facilitated and the number of assembling steps can be reduced, and poor adjustment can be prevented.

  That is, the base of a rotating body 48 that rotates integrally with the driving gear 42 is attached to the driving gear 42, and a mounting pin 49 is provided at the tip of the rotating body 48, and the one-side drive transmission means 40 is locked from the front side of the mounting pin 49. Then, the other side drive transmission means 41 is locked from the rear side of the mounting pin 49, and the one side drive transmission means 40 locked to the mounting pin 49 from the front side is routed forward as it is and the chain rail 45 is rotated. The one-side drive transmission means 40 that bypasses the moving shaft 46 and is locked from the rear side of the mounting pin 49 is once routed rearward, and then the wiring direction is changed to the front to rotate the rotation shaft 46 of the chain rail 45. Since each of the one side drive transmission means 40 and the other side drive transmission means 41 is locked to the drive link member 37, the rotating body 48 rotates integrally with the rotation of the drive gear 42 during the mowing and threshing operation. And the rotating body 48 The position of the end mounting pin 49 changes back and forth with respect to the axis of the drive gear 42, thereby converting the rotational motion of the drive gear 42 into the reciprocating motion of the mounting pin 49 of the rotating body 48. The one side drive transmission means 40 and the other side drive transmission means 41 transmit to the drive link member 37 to reciprocate the scraper 30.

  DESCRIPTION OF SYMBOLS 1 ... Airframe frame, 2 ... Traveling device, 3 ... Threshing device, 4 ... Harvesting device, 5 ... Glen tank, 6 ... Control part, 10 ... Handling cylinder, 11 ... Threshing room, 12 ... Grain supply / conveyance device, 13A ...挾 扼 杆, 13B ... supply and transfer chain, 15 ... handling net, 16 ... tang, 17 ... tang casing, 18 ... wind selection chamber, 20 ... oscillating sorting shelf, 21 ... oscillating sorting device, 22 ... transfer shelf, 23 ... Sheave, 24 ... Strollac, 25 ... First conveyor, 26 ... Second conveyor, 27 ... Fin, 28 ... Frame, 30 ... Scraper, 31 ... Sliding member, 32 ... Mounting portion, 33 ... Connecting member, 34 ... Mounting shaft, 35 ... Front and rear arms, 36 ... Left and right arms, 37 ... Drive link member, 38 ... Mounting shaft, 40 ... One side drive transmission means (drive transmission means), 41 ... Other side drive transmission means (drive transmission means) ), 42... Driving gear, 43. Output shaft 45 ... Chain rail 46 ... Rotating shaft 48 ... Rotating body 49 ... Mounting pin 55 ... Open mechanism 56 ... Lower tank 57 ... Upper tank 58 ... Vertical frame 59 ... Arm 60 DESCRIPTION OF SYMBOLS ... Support member, 61 ... Turning fulcrum shaft, 62 ... Discharge cereal cylinder, 63 ... Lock mechanism, 64 ... Engagement hook, 70 ... Engine, 71 ... Exhaust gas purification device, 72 ... Tail pipe, 73 ... Vertical cylinder part, 74: rear side cylinder part, 75 ... rear side cover, 76 ... bent part, 77 ... cooling fan, 79 ... air inlet.

Claims (4)

A swing sorting shelf (20) for providing a supply transport chain (13B) for feeding the cereals harvested by the mowing device (4) to the threshing chamber (11) of the threshing device (3), and for sorting the threshed workpieces. The swing sorting shelf (20) is provided with a sheave (23) in which a plurality of fins (27) for sorting grains and sawdust are arranged in the swing direction, and the sheave (23) A scraper (30) that reciprocates in the direction intersecting the swing direction of the swing sorting shelf (20) while slidingly contacting the sheave (23) is provided, and a drive link member (37) that reciprocates the scraper (30) is provided. The pair of attached drive transmission means (40, 41) is configured to operate in conjunction with the drive of the supply conveyance chain (13B), and one end of the pair of drive transmission means (40, 41) is connected to the supply conveyance chain ( relative 13B) of the drive gear (42), that time Combine the locked to the portion to be point-symmetrical relative to the axis of the central output shaft (44).   The pair of drive transmission means (40, 41) are arranged in parallel to the side portion of the chain rail (45) that supports the supply conveyance chain (13B), and the pair of drive transmission means (40, 41). Claim that the other end of the chain rail (45) provided at the start end of the chain rail (45) bypasses the front of the rotation shaft (46) for rotating outside and is locked to the drive link member (37). Term 1Combine as described. The combine according to claim 2 , wherein the drive gear (42) of the supply / conveyance chain (13B) is configured to be detachable from the output shaft (44) of the supply / conveyance chain (13B). A rotary body (48) that rotates integrally with the drive gear (42) is attached to the drive gear (42), and the drive transmission means is attached to a pair of attachment pins (49) provided on the outer side of the rotary body (48). The combine according to claim 3 , wherein one end of (40, 41) is locked.

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