JP2021023131A - Combine harvester - Google Patents

Abstract

To sufficiently compactify a structure for reverse rotation as a driving structure around a transportation device with a simple structure.SOLUTION: A combine harvester comprises a transportation device for transporting a crop from a reaping unit to a threshing unit, a power transmission mechanism 42 for transmitting a rotation power in a normal rotation direction to a driving input shaft of the transportation device so that the transported crop is directed from the reaping unit to the threshing unit, and a reverse rotation electric motor 60 for reverse rotation driving the transportation device by inputting reverse rotation power in an opposite direction to the normal direction to one end of the driving input shaft 32. The reverse rotation electric motor 60 is arranged, in the axial direction of the driving input shaft 32, closer to the transportation device than the input position of the reverse rotation power to the one end of the driving input shaft 32.SELECTED DRAWING: Figure 7

Description

In the present invention, the rotational power in the normal rotation direction is transmitted to the drive input shaft of the transport device that transports the crop from the harvesting section to the threshing section via the power transmission mechanism, and the forward rotation direction by the power transmission mechanism. It is related to the combine that can transmit the rotational power in the reverse direction, which is different from the power of.

As a combine capable of transmitting rotational power in the reverse direction other than the power in the forward rotation direction by the power transmission mechanism as described above, for example, the combine described in Patent Document 1 is already known.
In Patent Document 1, a rotational power in a reverse direction is provided separately from a power transmission mechanism that transmits rotational power in the forward rotation direction to a drive input shaft of a transport device that conveys crops from a cutting section to a threshing section. A structure provided with a reversing electric motor capable of transmitting is shown. In this structure, when the reverse rotation electric motor is provided, the reverse rotation electric motor is transmitted from the transfer device in the axial direction of the drive input shaft rather than the input point of the reverse power to the one end side of the drive input shaft. It is arranged on the distant side (see Patent Document 1).

Japanese Unexamined Patent Publication No. 9-289818 (see paragraph 0011, FIG. 2)

In the combine described in Patent Document 1, the structure for obtaining rotational power in the reverse direction of the transport device is not a reverse structure in which the transmission direction is mechanically reversed by using an intermediate transmission gear or the like, but a transmission direction by a power transmission mechanism. Is useful in that it is provided with an electric motor for reverse rotation that transmits reverse rotation so that the structure for reverse rotation can be performed with a relatively compact and simple structure.
However, in this structure, the reverse rotation electric motor is conveyed in the axial direction of the drive input shaft rather than the reverse rotation power input location with respect to the drive input shaft so as not to interfere with the vertical movement of the transfer device. It is arranged on the side away from the device. As a result, since the reversing electric motor projects to the side away from the conveying device, there is room for improvement in that it is difficult to sufficiently compact the drive structure around the conveying device including the reversing electric motor in the left-right direction.

The present invention is intended to make the structure for reversal as a drive structure around the transport device a simple structure and sufficiently compact.

The combine in the present invention relates to a transport device for transporting crops from the cutting section to the threshing section and a drive input shaft of the transport device so that the transported crops move from the cutting section to the threshing section. A power transmission mechanism that transmits rotational power in the forward rotation direction, and a reverse rotation electric motor that inputs reverse rotation power in the direction opposite to the normal rotation direction to one end side of the drive input shaft to reversely drive the transfer device. The reversing electric motor is arranged closer to the transport device in the axial direction of the driving input shaft than the reversing power input location with respect to the one end side of the driving input shaft. It is what has been done.

According to the present invention, when a clogging occurs in the transporting device, the reversing electric motor is driven to discharge the cut grain culm located in the middle of the transporting to the transporting start end side of the transporting device, and the clogging can be easily cleared. easy.
Then, by adopting the reverse rotation electric motor as the drive structure for reverse rotation, the drive means itself is made compact, and the arrangement position of the reverse rotation electric motor is set for driving rather than the input location of the reverse rotation power. By moving the input shaft to the side closer to the transport device in the axial direction, it is possible to suppress overhang to the side away from the transport device, and it is easier to configure the input shaft more compactly.

In the above configuration, the transport device is configured to be repositionable by swinging up and down within a predetermined angle range around the axis of the drive input shaft, and at an input location of reverse power on the drive input shaft. An input gear for transmitting power from the reversing electric motor is provided, and the outer diameter of the input gear is increased so that the outer peripheral portion of the gear is located outside the predetermined angle range of the transport device. It is preferable that it is formed.

According to this configuration, the outer diameter of the input gear provided at the input portion of the reverse rotation power on the drive input shaft is outside the swing range of the conveyor that swings up and down within a predetermined angle range. Is formed with a large diameter so that Therefore, the reversing electric motor can be arranged without narrowing the vertical swing range of the transport device.
Since the outer diameter of the input gear is increased, it is easy to set the rotational torque of the drive input shaft to be relatively large with respect to the ratio of the output of the reverse rotation electric motor. As a result, there is an advantage that it is easy to obtain the required rotational torque of the drive input shaft while adopting a relatively small reverse motor.

In the above configuration, it is preferable that the reversing electric motor is arranged at a position overlapping the transfer device in the left-right direction.

According to this configuration, the reverse rotation electric motor is arranged at a position overlapping the transfer device in the left-right direction. Therefore, the width in the left-right direction of the transfer device including the reverse direction electric motor is shortened as much as possible to make it compact. Easy to configure.

In the above configuration, it is preferable that the reversing electric motor is arranged at a position higher than that of the conveying device.

According to this configuration, since the reverse rotation electric motor is arranged at a position higher than the transfer device, the reverse direction electric motor can be arranged without narrowing the vertical swing range of the transfer device, and the transfer device can be equipped with the reverse electric motor. On the other hand, it is easy to compactly configure the entire transport device including the reversing electric motor by locating the reversing electric motor at overlapping locations in both the left-right direction and the front-rear direction.

In the above configuration, the drive input shaft has a power transmission location on which the rotational power from the power transmission mechanism is transmitted on the opposite side of the transfer device from the input portion of the reverse power, and the power thereof. It is preferable that a cutting section drive mechanism for transmitting power from the power transmission mechanism to the cutting section is linked between the side edge of the transport device on the side close to the transmission point.

According to this configuration, the cutting unit drive mechanism that transmits the power from the power transmission mechanism to the cutting unit is provided on the side opposite to the input location of the reverse rotation power across the transport device, so that the reverse rotation power input location is provided. It is easy to install it in a place where maintenance work can be easily performed at a position where there is no confusion of parts with. Then, on the side opposite to the input point of the reverse power with the transfer device in between, the power transmission point where the rotational power from the power transmission mechanism is transmitted, and the side edge of the transfer device on the side close to the power transmission point. Since it is provided between the two, it is easier to compactly configure the width of the transfer device including the cutting section drive mechanism in the left-right direction as compared with the case where it is provided at a position farther from the side edge of the transfer device than the power transmission location.

In the above configuration, the drive input shaft receives power from the power transmission mechanism between the input portion of the reverse power and the side edge of the transport device on the side close to the input portion. It is preferable that the cutting unit drive mechanism that transmits to is linked.

According to this configuration, a cutting unit drive mechanism for transmitting power from the power transmission mechanism to the cutting unit is provided between the input location of the reverse power and the side edge of the transport device on the side close to the input portion. Therefore, compared to the case where this power transmission mechanism is provided at a position farther from the side edge of the transfer device than the input point of the reverse power, the width in the left-right direction of the transfer device including this cutting section drive mechanism is compactly configured. easy.

In the above configuration, the drive input shaft is cut so as to transmit the power from the power transmission mechanism to the cutting portion even at a location located on the opposite side of the transfer device from the input portion of the reversing power. It is preferable that the unit drive mechanism is linked.

According to this configuration, the cutting unit drive mechanism that transmits the power from the power transmission mechanism to the cutting unit is provided with the input portion of the reverse power with the transfer device sandwiched between the drive input shafts and the side thereof. Since it is provided at both the location on the opposite side and the portion located on the opposite side, it is easy to obtain a cutting portion suitable for a structure requiring a relatively large load.

In the above configuration, it is preferable that the reversing electric motor is supported by the front portion of the threshing portion.

According to this configuration, since the front portion of the threshing portion existing in a relatively wide range can be used as the attachment portion of the reversing electric motor, it is easy to select and support a suitable attachment portion.

In the above configuration, an input gear for transmitting power from the reversing electric motor is provided at the input portion, and the reversing electric motor is provided with a motor output gear that meshes with the input gear. It is preferable to provide a cover that covers the side surface of the motor output gear on the side far from the transport device.

According to this configuration, a cover is provided to cover the side surfaces of the input gear of the drive input shaft and the motor output gear on the side far from the conveyor, so that contact with other objects or dust on the input gear and the motor output gear can be prevented. Easy to avoid accumulation.

In the above configuration, it is preferable that the cover is supported by a member that supports the reversing electric motor.

According to this configuration, the member that supports the reversing electric motor can also be used as a supporting means for the cover of the input gear and the motor output gear of the drive input shaft.

In the above configuration, it is preferable that the reverse rotation electric motor does not rotate when the power is transmitted from the power transmission mechanism that transmits the rotational power in the forward rotation direction to the drive input shaft. Is.

According to this configuration, in a state where the rotational power in the forward rotation direction is transmitted from the power transmission mechanism to the drive input shaft, the reverse rotation electric motor does not rotate, so the reverse rotation electric motor is rotated. It is easy to avoid the occurrence of power loss.

It is a right side view of the combine. It is a top view of the combine. It is explanatory drawing in the side view which shows the transport device and the reversing mechanism. It is explanatory drawing in the front view which shows a part of a reversing mechanism and a transport device. It is explanatory drawing in plan view which shows a part of a reversing mechanism and a transport device. It is an exploded perspective view which shows the attachment part of the reversing mechanism. It is a diagram which shows the power transmission system. It is sectional drawing which shows the cross section in the direction along the rotation axis of the driven side drum of a transport device, and the enlargement of a part thereof. It is sectional drawing in the IX-IX line direction in FIG. It is a diagram which shows the transmission system of the cutting drive mechanism in another embodiment.

Hereinafter, an example of the embodiment of the present invention will be described based on the description in the drawings.
Unless otherwise specified, the front-rear direction and the left-right direction in the description of the present embodiment are described as follows. That is, in the combine to which the present invention is applied, the traveling direction on the forward side (see arrows F in FIGS. 1 and 2) is "forward" and the traveling direction on the reverse side (arrows in FIGS. 1 and 2) when the traveling machine is working. B) is "rear", the direction corresponding to the right side with respect to the forward-looking posture in the front-back direction (see arrow R in FIG. 2) is "right", and similarly the direction corresponding to the left side (arrow L in FIG. 2). See) is "left".

〔overall structure〕
1 and 2 show a full-culm input type (ordinary type) combine which is an example of the combine according to the present invention. FIG. 1 shows the right side surface of the entire airframe, and FIG. 2 shows a plane.

As shown in these figures, the all-culm-loaded combine has a pair of left and right front wheels 1F and 1F (corresponding to a front traveling device) and a pair of left and right rear wheels 1R and 1R (rear traveling) on the lower side of the vehicle body frame 1. It is equipped with a device (corresponding to a device) to form a self-propelled airframe.
A cutting processing device 2 (corresponding to a cutting portion) is provided in front of the vehicle body frame 1, and a transport device 3 for transporting the cut crops to the rear side of the cutting processing device 2 is provided. The transport device 3 is supported on the rear end side around the horizontal horizontal axis X1 with respect to the vehicle body frame 1, and the front end side is supported so as to move up and down.
A driving cabin 10 (corresponding to a driving unit) is provided at the front portion of the vehicle body frame 1, a threshing device 4 and a grain tank 5 are provided at the rear side thereof, and a waste straw processing device 16 is provided at the rear portion thereof.

The engine 11 is mounted on the right lateral side of the threshing device 4 at the front portion on the vehicle body frame 1, and the radiator 12 is arranged at a rear position away from the engine 11. A fuel tank (not shown) is mounted on the opposite side of the threshing device 4 from the engine 11. The power of the engine 11 is transmitted to the threshing device 4, the cutting processing device 2, the radiator cooling fan 12a for cooling the radiator 12, and the like, in addition to the above-mentioned traveling device.

On the front wheel 1F, power transmitted from the transmission 13 mounted on the front portion of the vehicle body frame 1 via the front wheel drive shaft 14 extending to the left and right is formed on the surface of the front wheel 1F facing toward the inside of the aircraft. It is configured to be transmitted to the front wheel 1F via the deceleration case 15 arranged in a state of entering the recessed portion and the front axle 1a supported by the deceleration case 15.
As a result, the front wheel 1F is attached so that the power of the engine 11 is transmitted via the front axle 1a and is driven and rotated around the horizontal horizontal axis of the front axle 1a. The front wheel 1F is composed of non-steering wheels composed of tire wheels whose width and diameter in both the left-right direction are larger than those of the rear wheel 1R.

As shown in FIGS. 4 and 5, the rear wheel 1R is a rear wheel support frame (not shown) mounted at the rear portion of the vehicle body frame 1 so as to swing left and right around an axial center in the front-rear direction (not shown). ) Is provided on both left and right ends, and is composed of steering wheels provided with a rear axle 1b that can be steered around the vertical swing axis. The rear wheel 1R is composed of tire wheels whose width and diameter in the left-right direction are set smaller than those of the front wheel 1F, and rotates around the horizontal horizontal axis of the rear axle 1b.

[Mowing processing device]
As shown in FIGS. 1 to 3, a cutting processing device 2 is provided in front of the threshing device 4 mounted on the vehicle body frame 1.
The cutting processing device 2 includes a scraping reel 20 that scrapes the tip side of the crop such as a planted culm, a cutting device 21 that cuts the root side of the plant, and a lateral gathering of the cut crops in the central portion in the cutting width direction. It is equipped with a feed auger 22. That is, the scraping reel 20 raises the tip side, the cutting device 21 cuts the crop, the lateral feed auger 22 moves it toward the center in the cutting width direction, and the subsequent transport device 3 located in the center in the cutting width direction. It is configured to feed into the entrance. The scraping reel 20 is configured so that the relative height with respect to the cutting device 21 can be changed by expanding and contracting the reel elevating cylinder 23.

[Transport device]
The transport device 3 is equipped with an endless transport body 31 used as a feed conveyor that rotates along the front-rear direction inside a square tubular feed case 30 whose front and rear are open. The cut crops sent to the entrance of the feed case 30 are placed on the endless carrier 31 and transported upward and rearward.
The crop transport direction by the transport device 3 is a front-rear direction along the rotation axis of the handle barrel 40 in the threshing device 4.
The endless carrier 31 is wound around a driving rotating body 33 that is rotationally driven around the driving input shaft 32 and a driven side drum 35 that is supported by the driven shaft 34 and driven to rotate.

The feed case 30 moves up and down along with the cutting processing device 2 around the axis of the drive input shaft 32 located on the rear end side of the transport device 3 as the elevating cylinder 17 connected to the lower part expands and contracts. It is configured to be operable.
A transmission pulley 36 is provided at the left end of the drive input shaft 32 on the lateral side of the feed case 30 as a power transmission point for transmitting the power of the engine 11. The drive input shaft 32 is rotated in the forward rotation direction by the power of the engine 11 transmitted to the transmission pulley 36 via the power transmission mechanism 42 described later, and the transported crop is transferred from the cutting section to the threshing section. The endless carrier 31 is driven so as to face.

Therefore, when the power of the engine 11 is transmitted to the transmission pulley 36 via the power transmission mechanism 42 to rotate the drive input shaft 32 in the forward rotation direction, the drive rotating body 33 moves in the forward rotation direction. It rotates and transports the crop from the cutting section to the threshing section and supplies it to the threshing device 4. This is the normal driving state of the transport device 3 during the cutting and threshing operation.

[Reversal mechanism]
A reverse rotation mechanism 6 including a reverse rotation electric motor 60 for driving the drive input shaft 32 in the reverse rotation direction opposite to the forward rotation direction transmitted from the power transmission mechanism 42 will be described.
As shown in FIGS. 3 to 7, the power transmission mechanism 42 capable of transmitting power to the transmission pulley 36, which is the power transmission point of the drive input shaft 32, uses a transmission belt to transfer the power of the engine 11 to the threshing device 4. It is configured to drive each device such as the handling cylinder 40 and the wall insert 41 of the threshing device 4. The power transmission mechanism 42 is provided with an on-state (transmission state) in which power is transmitted to the transmission pulley 36 and power to the transmission pulley 36 at a position on the transmission superior side in the power transmission direction with respect to the transmission pulley 36. A tension clutch 43 that can be switched between a disengaged state (non-transmission state) and a disengaged state is provided.

An input gear 39 for reverse power transmission is integrated with the drive input shaft 32 at the right end of the drive input shaft 32 on the side opposite to the side on which the transmission pulley 36 is provided with the feed case 30 interposed therebetween. It is provided to rotate.
As shown in FIG. 3, the input gear 39 has an outer diameter larger than the vertical width of the feed case 30, and the feed case 30 has risen to the maximum height as shown by a virtual line in FIG. Even in this state, the outer peripheral portion of the input gear 39 is formed to have a large diameter so as to be located outside the feed case 30.

The motor output gear 61 provided in the reverse rotation electric motor 60 meshes with the gear portion formed on the outer circumference of the input gear 39. Therefore, when the reverse electric motor 60 is energized and the motor output gear 61 rotates, the input gear 39 meshing with the motor output gear 61 is driven in the direction opposite to the forward rotation direction transmitted via the power transmission mechanism 42. To. That is, the drive input shaft 32 is reversed so that the endless transport body 31 is driven in the direction from the threshing section to the cutting section instead of the transported crop going from the threshing section to the threshing section, and the endless transport is performed. The driving direction of the body 31 is changed.

The operation of the reverse rotation electric motor 60 is performed by operating the forward / reverse rotation operating tool 62 provided in the operation cabin 10. The control device 63 drives the reverse electric motor 60 to the reverse side of the drive input shaft 32 based on the entry operation of the forward / reverse operation tool 62, and the control device 63 is based on the turning operation of the forward / reverse operation tool 62. Cuts off the drive of the reverse rotation electric motor 60 and enables free rotation.
When the forward / reverse operation tool 62 is turned on, the control device 63 outputs a command to operate the tension clutch 43 of the power transmission mechanism 42 to the cut side, and the power transmission mechanism 42 is operating while the reverse electric motor 60 is operating. The driving force in the forward rotation direction is not transmitted through the vehicle. When the forward / reverse operation tool 62 is operated to the turning side, the control device 63 outputs a command to operate the tension clutch 43 to return to the entering side.

By using the above-mentioned electric motor 60 for reversing, the motor output gear 61, and the input gear 39, a reversing mechanism capable of reversing driving the transport direction of the cut crop by the endless transport body 31 with respect to the normal rotation direction. 6 is configured.
In the reversing mechanism 6, the reversing power input point with respect to the driving input shaft 32 is the position where the input gear 39 exists, and the reversing electric motor 60 is driven more than the input gear 39 which is the reversing power input point. It is located on the side where the feed case 30 of the transport device 3 exists in the axial direction of the input shaft 32.

Specifically, as shown in FIGS. 3 to 5, the reverse rotation electric motor 60 is arranged in the left-right direction closer to the center of the transfer device 3 than the position where the input gear 39 exists, and is partially in plan view. It is arranged at a position overlapping with the feed case 30. Further, as shown in FIGS. 3 and 4, the transport device 3 is arranged at a position higher than the feed case 30. Then, as shown in FIG. 3, the motor output gear 61 of the reverse rotation electric motor 60 meshes with the input gear 39 at a position directly above or close to the drive input shaft 32.

As shown in FIGS. 4 to 6, the input gear 39 and the motor output gear 61 are covered with a cover 64 on the side surface of the feed case 30 opposite to the side surface facing the right side wall portion 30R.
The cover 64 is formed in an octagonal shape when viewed from the side, and is formed in a size that covers both the input gear 39 and the motor output gear 61. Connection pieces 64b and fixing bolts 65 provided on both front and rear sides of the peripheral wall portion 64a of the cover 64 are connected and fixed to the connecting plate member 66. The connecting plate member 66 is welded and fixed to the fixing member 67 that fixes the reversing electric motor 60 to the front surface of the threshing device 4.

[Mowing part drive mechanism]
In addition to the driving rotating body 33 for driving the endless carrier 31, the driving input shaft 32 is linked with a cutting section driving mechanism 26 for transmitting power to the cutting processing device 2.
The cutting unit drive mechanism 26 is on the opposite side of the input gear 39, which is an input point for reverse power, with the transport device 3 sandwiched between them, and is a transmission point where the rotational power from the power transmission mechanism 42 is transmitted. Transmission for transmitting power from the power transmission mechanism 42 to the cutting processing device 2 between the pulley 36 and the left wall portion 30L corresponding to the side edge of the transfer device 3 on the side close to the transmission pulley 36. The sprocket 37 is provided so as to be rotatable integrally with the drive input shaft 32.
The transmission chain 38 wound around the transmission sprocket 37 is also wound around the passive sprocket 25 provided on the relay shaft 24 provided in the cutting processing device 2. That is, it is transmitted to the drive input shaft 32 by using the cutting section drive mechanism 26 including the transmission sprocket 37, the passive sprocket 25, and the transmission chain 38 wound around the transmission sprocket 37 and the passive sprocket 25. It is configured so that the generated power can be transmitted to the cutting processing device 2.

[Other]
As shown in FIGS. 8 and 9, the driven drum 35 of the transport device 3 does not have a very large diameter for its axial length. Therefore, when an attempt is made to weld and fix the reinforcing disk 35a at an intermediate position in the length direction, the outer circumference of the driven shaft 34 and the reinforcing disk externally fitted to the reinforcing disk 35a are located at the inner and inner sides of the reinforcing disk 35a. It is difficult to perform welding with the inner peripheral portion of 35a.
Therefore, at the welded portion between the outer circumference of the driven shaft 34 and the inner peripheral portion of the reinforcing disc 35a that fits outside the driven shaft 34, only the portion facing the lateral side of the reinforcing disc 35a is welded and fixed, and the inside of the reinforcing disc 35a is welded and fixed. Welding at the portion facing the back side is omitted, and instead, an opening for welding is provided on the outer peripheral surface of the driven side drum 35, and the outer peripheral portion of the reinforcing disk 35a is positioned at this portion to position the driven side drum 35. It is fixed by welding from the outside. As shown in FIG. 9, the welded parts are dispersed in a plurality of parts (four points in this example) in the circumferential direction.

As shown in FIG. 3, on the outside of the right side wall portion 30R of the feed case 30, a hydraulic pipe 27 for holding a hydraulic pipe 27 for a reel elevating cylinder 23 for adjusting the vertical height of the scraping reel 20 of the cutting processing device 2 is held. A U-shaped holding metal fitting 28 is provided. The holding metal fittings 28 are provided at a plurality of locations in the length direction of the feed case 30 so as to stabilize the positions in the vertical and horizontal directions while allowing the relative position change in the expansion and contraction direction of the hydraulic pipe 27.

[1 of another embodiment]
In the embodiment, the cutting unit drive mechanism 26 is on the opposite side of the input gear 39, which is the input point for the reverse rotation power across the transport device 3, and the power transmission point where the rotational power from the power transmission mechanism 42 is transmitted. Although the structure provided between the transmission pulley 36 and the left wall portion 30L corresponding to the side edge of the transport device 3 on the side close to the transmission pulley 36 has been illustrated, this is not necessarily the case. It is not limited to the structure.
For example, although not shown, the cutting unit drive mechanism 26 is provided between the input gear 39, which is the input point for the reverse rotation power, and the right side wall portion 30R on the side close to the input gear 39. May be good.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

[2 of another embodiment]
In the embodiment, the cutting unit drive mechanism 26 is on the opposite side of the input gear 39, which is the input point for the reverse rotation power across the transport device 3, and the power transmission point where the rotational power from the power transmission mechanism 42 is transmitted. Although the structure provided between the transmission pulley 36 and the left wall portion 30L corresponding to the side edge of the transport device 3 on the side close to the transmission pulley 36 has been illustrated, this is not necessarily the case. It is not limited to the structure.
For example, as shown in FIG. 10, the cutting unit drive mechanism 26 is used between the input gear 39 and the right side wall portion 30R on the side close to the input gear 39, and on the side opposite to the input gear 39. Between the transmission pulley 36, which is the power transmission point where the rotational power from 42 is transmitted, and the left wall portion 30L corresponding to the side edge of the transport device 3 on the side close to the transmission pulley 36. It may be provided on both sides.
In this case, it is particularly suitable for harvesting crops such as corn, which have a large driving load by the cutting processing device 2.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

[3 of another embodiment]
In the embodiment, the reverse electric motor 60 is driven by the drive input shaft 32 on the side opposite to the side where the transmission pulley 36 is provided, which is the power transmission point where the rotational power from the power transmission mechanism 42 is transmitted. Although it is provided so as to input to one end of the above, the structure is not necessarily limited to this structure.
For example, although not shown, with respect to the end of the drive input shaft 32 on the same side as the side where the transmission pulley 36 is provided, which is the power transmission point where the rotational power from the power transmission mechanism 42 is transmitted. It may be provided so that it can be input.
Also in this case, the reverse rotation electric motor 60 is located closer to the transfer device 3 than the input gear 39 and the motor output gear 61, and is arranged so as to overlap the feed case 30 in a plan view. Is desirable.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

[4 of another embodiment]
In the embodiment, a structure in which the motor output gear 61 of the reverse rotation electric motor 60 is constantly meshed with the input gear 39 has been exemplified, but the structure is not necessarily limited to this structure.
For example, the motor output gear 61 may be movable so as to be able to switch between the meshing state and the disengaging state with respect to the input gear 39.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

The present invention is applicable not only to a wheel traveling type combine harvester but also to a crawler traveling type combine harvester.

3 Conveyor device 26 Cutting part drive mechanism 32 Drive input shaft 39 Input gear 42 Power transmission mechanism 60 Reverse motor motor 61 Motor output gear 64 Cover

Claims (11)

A transport device that transports crops from the harvesting section to the threshing section,
A power transmission mechanism that transmits rotational power in the forward rotation direction to the drive input shaft of the transport device so that the crop to be transported goes from the cutting section to the threshing section.
An electric motor for reverse rotation, which inputs reverse power in a direction opposite to the forward rotation direction to drive the transfer device in reverse direction, is provided on one end side of the drive input shaft.
A combine in which the reversing electric motor is arranged closer to the transport device in the axial direction of the driving input shaft than the reversing power input location with respect to the one end side of the driving input shaft. The transport device is configured to be repositionable by swinging up and down within a predetermined angle range around the axis of the drive input shaft.
An input gear for transmitting the power from the reversing electric motor is provided at an input portion of the reversing power on the driving input shaft.
The combine according to claim 1, wherein the outer diameter of the input gear is formed to have a large diameter so that the outer peripheral portion of the gear is located outside the predetermined angle range of the transport device. The combine according to claim 2, wherein the reversing electric motor is arranged at a position overlapping the transfer device in the left-right direction. The combine according to claim 3, wherein the reversing electric motor is arranged at a position higher than that of the transport device. The drive input shaft is close to a power transmission location where rotational power from the power transmission mechanism is transmitted and a power transmission portion thereof on the opposite side of the transfer device from the input portion of the reverse power. The combine according to any one of claims 1 to 4, wherein a cutting section drive mechanism for transmitting power from the power transmission mechanism to the cutting section is linked between the side edge of the transport device on the side. .. In the drive input shaft, the power from the power transmission mechanism is transmitted to the cutting portion between the input portion of the reverse power and the side edge of the transport device on the side close to the input portion. The combine according to any one of claims 1 to 4, wherein the unit drive mechanism is linked. The drive input shaft includes a cutting unit drive mechanism that transmits power from the power transmission mechanism to the cutting unit even at a location on the opposite side of the transfer device from the input location of the reverse rotation power. The combine according to claim 6, which is linked. The combine according to any one of claims 1 to 7, wherein the reversing electric motor is supported on the front portion of the threshing portion. An input gear for transmitting power from the reversing electric motor is provided at the input location.
The reverse rotation electric motor is provided with a motor output gear that meshes with the input gear.
The combine according to any one of claims 1 to 8, further comprising a cover covering the side surface of the input gear and the motor output gear on the side far from the transport device. The combine according to claim 9, wherein the cover is supported by a member that supports the reversing electric motor. Claims 1 to 10 wherein the reverse electric motor does not rotate in a state where power is transmitted from a power transmission mechanism that transmits rotational power in the forward rotation direction to the drive input shaft. The combine described in any one item.

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