WO2021020568A1

WO2021020568A1 - Combine

Info

Publication number: WO2021020568A1
Application number: PCT/JP2020/029488
Authority: WO
Inventors: 井上嘉晃; 三井孝文; 熊取剛; 西村俊成; 大平尚弘; 山下直樹; 安達賢二
Original assignee: 株式会社クボタ
Priority date: 2019-07-31
Filing date: 2020-07-31
Publication date: 2021-02-04
Also published as: CN114173553A; CN114173553B

Abstract

This combine is provided with: a conveyance device which conveys crops from a reaping part to a threshing part; a power transmission mechanism 42 which transmits rotary power in a forward rotational direction to a drive input shaft of the conveyance device so that the crops are conveyed from the reaping part to the threshing part; a reverse rotation electric motor 60 which drives the conveyance device reversely by inputting reverse rotary power in the reverse direction which is reverse to the forward direction, to one end of a drive input shaft 32, wherein the reverse rotation electric motor 60 is disposed closer to the conveyance device in the axial direction of the drive input shaft 32 than is an input portion of the reverse rotary power to the end of the drive input shaft 32.

Description

combine

The present invention relates to a combine harvester and a harvester.

[First background technology]
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).

[Second background technology]
Harvesters such as combines are equipped with a harvester located at the front of the machine to harvest planted culms. In this type of harvester, the cutting section is equipped with a cutting blade that cuts the root of the planted culm and an auger that transfers the cut culm in the left-right direction toward the entrance to the transport section. The cutting part frame that supports the blade and auger supports the back part that is connected to the rear transport part, the bottom part that is located behind the cutting blade and guides the cut grain culm, and the weeding tool. It has a structure having left and right side wall portions. Conventionally, the left and right side wall portions are provided with frame members having a square tubular shape or a substantially U-shaped cross-sectional shape extending in the front-rear direction at the upper and lower portions, and side plates are supported by the frame members. .. Further, the outer surface of the side plate is provided with a reinforcing member having a square tubular shape or a substantially U-shaped cross-sectional shape extending in the vertical direction (see, for example, Patent Document 2).

[Third background technology]
The combine described in Patent Document 3 is provided with an exterior cover on the outer side of the left and right lateral side walls forming the handling chamber of the threshing device. This exterior cover is provided so as to extend in the front-rear direction over the entire width of the threshing device in the front-rear direction.

Japanese Unexamined Patent Publication No. 9-289818 (see paragraph 0011, FIG. 2) Japanese Unexamined Patent Publication No. 2016-49094 Japanese Unexamined Patent Publication No. 2014-14324

[First task]
The issues corresponding to the first background technology are as follows.
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.

Therefore, as a drive structure around the transport device, it has been requested that the structure for reversal be made simple and sufficiently compact.

[Second task]
The issues corresponding to the second background technology are as follows.
In the above-mentioned conventional configuration, the left and right side wall portions in the cutting portion have a large and heavy frame member and a reinforcing member, and the structure is complicated. As a result, there are disadvantages that the weight of the entire cutting portion increases, the number of members is large, and processing time is required, which leads to high cost.

Therefore, it was requested to reduce the weight and cost of the cutting part.

[Third task]
The issues corresponding to the third background technology are as follows.
In the combine of Patent Document 3, the exterior covers on both the left and right sides are configured to swing open and close around the swing fulcrum along the front-rear direction of the upper body. Then, when the exterior cover is opened, the exterior cover is in a posture along the horizontal plane and is located above the threshing device. Therefore, it becomes difficult to perform maintenance on the upper part of the threshing device.

Therefore, it was requested to improve the maintainability of the combine.

The solutions corresponding to the first problem are as follows.
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. 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 harvested grain culm located in the middle of the transporting to the transporting start end side of the transporting device, and the clogging is 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 reverse rotation power input location. By moving the input shaft to the side closer to the transport device in the axial direction, it is possible to suppress the overhang to the side away from the transport device, and it is easier to configure the structure even more compactly.

In the present invention, 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 is located at an input position 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 present invention, 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, since the reverse rotation electric motor is arranged at a position overlapping the transfer device in the left-right direction, 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 present invention, it is preferable that the reversing electric motor is arranged at a higher position than the transport 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 present invention, 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 present invention, 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 section drive mechanism that transmits power from the power transmission mechanism to the cutting section is provided between the input point of the reverse power and the side edge of the transport device on the side close to the input point. Therefore, the width in the left-right direction of the transport device including the cutting section drive mechanism is made more compact than when the power transmission mechanism is provided at a position farther from the side edge of the transfer device than the input location of the reverse power. easy.

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

According to this configuration, the front part of the threshing part, which exists in a relatively wide range, can be used as the mounting part of the reversing electric motor, so that it is easy to select and support a suitable mounting part.

In the present invention, 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 present invention, 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 present invention, it is preferable that the reverse 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.

The solutions corresponding to the second problem are as follows.
The harvester according to the present invention has a cutting section located at the front portion of the machine body for cutting planted grain culms, and a transport section connected to the rear portion of the cutting section and for transporting the grain culms cut by the cutting section to the rear. A section is provided, and the cutting section is provided with left and right weeding tools for weeding the planted culm, a cutting blade for cutting the root of the planted culm, and the cut culm to the transport section. An auger that is transferred in the left-right direction toward the inlet and a cutting portion frame that supports the cutting blade and the auger are provided, and the cutting portion frame is connected to the transport portion as well as the entrance is formed. The back surface portion, the bottom surface portion located on the rear side of the cutting blade to receive and guide the cut grain culm, the rear end portion are connected to the back surface portion, and the lower end portion is connected to the bottom surface portion. It has left and right side wall portions that support the left and right weeding tools, and the left and right side wall portions have an upper folded portion that is folded back in an L shape toward the outer side in the left-right direction at the upper side portion. , It is composed of a single plate frame structure having a front folded portion folded back in an L shape toward the outer side in the left-right direction at a front portion side portion.

According to the present invention, since the left and right side wall portions are formed of a single plate frame structure, it is possible to reduce the weight as compared with a large and heavy square frame member or a reinforcing member. Not only is it possible, but it is also possible to reduce the labor and cost of processing. By the way, if the left and right side wall portions are, for example, only the side plates of a single plate having a single plate frame structure, the support strength for supporting the cutting blade and the auger may decrease, but in the present invention, the left and right side walls Since the upper side portion and the front side portion of the side wall portion have an upper folded portion and a front folded portion that are folded back in an L shape toward the outer side in the left-right direction, it is necessary to support the cutting blade and the auger. It is possible to secure the supporting strength.

Therefore, it has become possible to reduce the weight and cost of the entire cutting section by simplifying the configuration of the left and right side wall portions while having sufficient support strength.

In the present invention, the cutting portion is provided with a rotary reel for scraping the cut grain culm rearward, a reel frame for supporting the rotary reel so as to be able to move up and down, an upper portion of the side wall portion, and the reel frame. It is preferable that an elevating operation mechanism for elevating and lowering the reel frame is provided, and a support bracket for supporting the end portion of the elevating operation mechanism is mounted and supported on the upper surface portion of the horizontal posture of the upper folded portion.

According to this configuration, since the end portion of the elevating operation mechanism is supported on the upper part of the side wall portion, the elevating operation mechanism is supported as compared with the configuration in which the elevating operation mechanism is supported by the support brackets provided in the upper and lower intermediate portions of the side wall portion, for example. The length in the vertical direction can be made compact. The upper part of the side wall portion has an L-shaped folded shape, and it is possible to secure the supporting strength for supporting the rotary reel.

In the present invention, it is preferable that a vertical reinforcing member made of a plate in a vertical posture is provided over the upper surface portion in the horizontal posture and the side wall main body portion in the vertical posture in the upper folded portion.

According to this configuration, the support strength of the upper folded portion can be improved by the vertical reinforcing member, and the upper folded portion can be prevented from bending downward and deforming.

In the present invention, a plurality of the vertically oriented reinforcing members are provided at intervals in the front-rear direction, and the laterally oriented plate body is composed of a plate body in a lateral orientation that connects the lower end edges of the plurality of the vertically oriented reinforcing members and is connected to the side wall portion. A reinforcing member is provided, and the lateral reinforcing member extends forward from the vertical reinforcing member located at the frontmost side and extends rearward from the vertical reinforcing member located at the rearmost side, and the lateral reinforcing member is provided. It is preferable that both front and rear portions of the member are connected to the upper folded portion.

According to this configuration, the support strength can be increased by a plurality of vertical reinforcing members, and further, the lower end edges of the plurality of vertical reinforcing members are connected and extended in the front-rear direction to be connected to the upper folded portion. By providing the lateral reinforcing member, the rigidity of the entire side wall portion can be increased.

In the present invention, it is preferable that the weeding tool is connected to the front folded portion.

According to this configuration, the weeding tool can be well supported by the front folded portion having high supporting strength.

In the present invention, a rod-shaped weeding frame that extends rearward from the rear end portion of the weeding tool and has a flange portion at the rear portion is provided, and the weeding frame is inserted into the front folded portion in the front-rear direction. An opening for weeding is formed, the weeding frame is inserted through the opening for weeding, and the flange portion faces the front surface portion of the front folded portion in a face-to-face posture, and the flange portion is on the front side. It is preferable that it is connected to the folded portion.

According to this configuration, when the weeding tool is attached, a rod-shaped weeding frame is inserted through the weeding opening to connect the flanges, so that the alignment can be easily performed and the assembling property is improved. Further, according to the above configuration, there is an advantage that the opening for weeding and the insertion hole for mounting can be made large so that the position of the weeding tool can be changed easily.

In the present invention, an L-shaped front reinforcing member in a plan view is provided at a portion of the front folded-back portion facing the flange portion in a surface-to-plane posture, and the front reinforcing member is provided with the front reinforcing member. It is preferable that the flange portion and the front folded portion are connected together in a tightened state.

According to this configuration, by tightening the front reinforcing member together, the support strength of the connecting portion with respect to the front folded portion of the flange portion can be increased.

In the present invention, a side reinforcing member is provided at a lower front portion of the side wall portion in a state of being erected from the side wall portion toward the lateral outward side and extending in the front-rear direction, and the lower end of the side wall portion. The front bottom plate portion is provided with a plate-shaped front bottom plate portion that is erected laterally outward and along the lower end of the front portion lower portion, and the front bottom plate portion is folded back toward the front side in a side view. It is preferable that the lower end portion of the portion extends to the front end portion of the bottom surface portion.

According to this configuration, a cutting blade is provided at a portion below the front portion of the cutting portion, and the cutting blade is supported over the side wall portions on both the left and right sides. Therefore, by providing a side reinforcing member at the front lower side portion of the side wall portion, it is possible to increase the rigidity of the portion where the load is applied during the cutting work. Further, by providing the front bottom plate portion, the front bottom plate portion can prevent the front lower side portion of the side wall portion from coming into contact with the ground and being worn during the cutting operation.

In the present invention, the cutting blade driving portion that drives the cutting blade by the power transmitted from the machine body side is provided in a state of being supported by the side reinforcing member, and the side reinforcing member and the front folded portion are provided. It is preferable that a connecting reinforcing member is provided over the lower end portion.

According to this configuration, the cutting blade drive unit can be reasonably supported by using the side reinforcing member. By supporting the cutting blade driving portion, the load load applied to the side reinforcing member can be supported by the front folded portion via the connecting reinforcing member, and the supporting strength of the entire side wall portion can be increased.

In the present invention, an opening for an auger is formed in the side wall portion for inserting the rotation shaft of the auger, and the opening for the auger is covered on the lateral outer side of the side wall portion, and the rotation shaft can be rotated. A drive wheel body provided with a support plate having a bearing portion to support the rotating shaft and to which driving power is transmitted, and an endless rotating body for power transmission wound around the drive wheel body. A tension ring body that applies a tension force to the endless rotating body and a position adjusting portion that repositionably supports the tension wheel body in order to change the tension force are provided, and the position adjusting portion is the support plate. It is preferable that it is supported by.

According to this configuration, the position adjustment part is supported by using the support plate provided to support the rotating shaft of the auger. By supporting the position adjusting portion on the support plate in this way, it is not necessary to provide an opening or a notch in the side wall portion for adjusting the position of the tension ring body, and the rigidity of the side wall portion of the single plate frame structure is increased. It can prevent the decrease.

The solutions corresponding to the third problem are as follows.
The combine in the present invention threshes a harvesting section for harvesting crops in a field, an operating section provided behind the harvesting section, and a harvested product provided behind the driving section and harvested by the harvesting section. A threshing device to be threshed, a grain tank provided above the threshing device and storing grains obtained by the threshing device, and the threshing device in a state of being swingable around an axis extending in the vertical direction. The threshing device cover is provided on one side surface in the left-right direction of the machine and can be switched between a closed state covering the side surface of the threshing device and an open state in which the side surface of the threshing device is opened.

According to the present invention, since the threshing device cover can swing around the axis extending in the vertical direction, the threshing device cover in the open state is in a posture of extending in the vertical direction, and the outer part is placed on the upper part of the threshing device. The cover is not positioned. This facilitates maintenance of the upper part of the threshing device and can improve the maintainability of the combine.

In the present invention, the grain tank is provided on one side surface of the grain tank in the left-right direction in a state adjacent to the upper side of the threshing device cover, and the closed state covering the side surface of the grain tank and the grain tank. It is preferable to provide a grain tank cover configured to be switchable to an open state in which the side surface is open.

According to this configuration, since the openable and closable grain tank cover is provided adjacent to the upper side of the threshing device cover, the side surface of the threshing device and the grain tank can be opened with the threshing device cover and the grain tank cover open. The side surface can be maintained at once, and the maintainability of the combine can be further improved.

In the present invention, a grain hinge portion provided on the upper part of the grain tank cover and supporting the grain tank cover on the grain tank in a state where the grain tank cover can swing around an axis extending in the front-rear direction of the machine body is provided. It is preferable to provide.

According to this configuration, the grain hinge portion is provided on the upper part of the grain tank cover, and the grain tank cover can swing around the axis extending along the front-rear direction of the machine body, so that the grain tank cover is provided at a relatively high position. The opening and closing operation of the grain tank cover is facilitated. In addition, since the open grain tank cover is located at the top of the grain tank, a wide range can be opened and maintained at once from the side of the threshing device to the side of the grain tank, and the combine can be maintained. The maintainability can be further improved.

In the present invention, it is possible to switch between a locked state provided below the grain tank cover and holding the grain tank cover in the closed state and an unlocked state allowing switching to the open state of the grain tank cover. It is preferable that the grain locking mechanism is provided and the grain locking mechanism is hidden when the grain removing device cover is in the closed state.

According to this configuration, since the grain locking mechanism is provided at the lower part of the grain tank cover, the opening and closing operation of the grain tank cover becomes easy, and the maintainability of the combine can be further improved. Further, since the grain locking mechanism is hidden when the threshing device cover is in the closed state, it is possible to suppress unintentional release of the grain locking mechanism and enhance the aesthetic appearance of the combine.

In the present invention, the handle portion provided in a state of protruding downward from the lower part of the grain tank cover is provided, and the grain lock mechanism projects downward from the grain lock main body portion and the lower part of the grain tank cover. The grain lock mechanism is provided in the above-mentioned state, and the grain lock operation unit that can switch the grain lock mechanism from the locked state to the unlocked state is provided, and when the grain removal device cover is in the closed state, the grain is provided. It is preferable that the grain lock operation portion and the handle portion of the lock mechanism are hidden by the grain removal device cover, and the grain lock main body portion of the grain lock mechanism is hidden by the grain tank cover. ..

According to this configuration, when the threshing device cover is in the closed state, the grain lock operation unit and the handle portion are hidden by the threshing device cover, so that the grain lock mechanism is not intended when the threshing device cover is closed. It is possible to suppress the release and enhance the aesthetics of the combine. Further, when the threshing device cover is opened, the grain lock operation portion and the handle portion are exposed, so that the opening and closing operation of the grain tank cover can be facilitated, and the maintainability of the combine can be further improved.

In the present invention, the grain tank cover is provided with a damper that extends as the grain tank cover rises and swings from the closed state to the open state, and one end of the damper is supported by the grain tank cover. The other end of the grain lock mechanism is supported by the support member on the machine body side, the cover side part of the grain lock mechanism is supported by the grain tank cover, and the body side part of the grain lock mechanism is the support member. It is preferable that it is supported by.

According to this configuration, the other end of the damper and the machine body side portion of the grain locking mechanism are supported by the support member on the machine body side, so that the component configuration on the machine body side can be simplified and the damper and the grain locking mechanism can be simplified. Can be reliably supported and operated smoothly.

In the present invention, a threshing hinge portion provided on the front portion of the threshing device cover and supporting the threshing device in a state in which the threshing device cover can swing around an axis extending in the vertical direction, and the threshing device. A threshing lock mechanism provided at the rear of the cover and capable of switching between a locked state for holding the threshing device cover in the closed state and an unlocked state for allowing the threshing device cover to be switched to the open state is provided. It is preferable that the threshing lock mechanism is provided in a state of protruding downward from the rear portion of the threshing device cover and is provided with a threshing lock operation unit capable of switching the threshing lock mechanism from the locked state to the unlocked state.

According to this configuration, since the threshing hinge portion is provided in the front part of the threshing device cover, the rear part of the threshing device cover is wide open, and the exposed side surface of the threshing device can be easily maintained. In addition, since the threshing lock operation unit projects downward from the rear portion of the threshing device cover, the threshing lock mechanism can be easily released. That is, the maintainability of the combine can be further improved.

In the present invention, the threshing device cover is provided on the side surface of the threshing device on both sides in the left-right direction of the machine on which the most transport device is arranged, and covers from the rear end to the front end of the first transport device. Of both sides of the threshing device in the left-right direction of the machine, the side surface opposite to the side where the threshing device cover is provided is swingably provided around the axis extending in the front-rear direction of the machine and the threshing device. It is preferable to provide a sub-threshing device cover configured so as to be switchable between a closed state covering the side surface and an open state in which the side surface of the threshing device is opened.

According to this configuration, maintenance can be performed from the rear end to the front end of the first transport device by opening the threshing device cover. Further, since the auxiliary threshing device cover that can be opened and closed is provided on the side surface opposite to the side on which the threshing device cover is provided, maintenance of the side surface of the threshing device becomes easy. That is, the maintainability of the combine can be further improved.

In the present invention, the threshing device is provided on both side surfaces in the left-right direction of the machine body of the threshing device in a state of being adjacent to the lower side with respect to the sub-threshing device cover, and is provided on the side surface opposite to the side on which the threshing device cover is provided. It is preferable to provide a lower threshing device cover that covers the lower part of the device.

According to this configuration, the lower threshing device cover is provided adjacent to the lower side of the sub-threshing device cover. Therefore, the sub-threshing device cover and the lower threshing device cover are opened to compare the side surfaces of the threshing device. A wide range can be maintained at once, and the maintainability of the combine can be further improved.

(First Embodiment) It is a right side view of a combine. (First Embodiment) It is a top view of the combine. (First Embodiment) It is explanatory drawing in the side view which shows the transport device and the reversing mechanism. (First Embodiment) It is explanatory drawing in the front view which shows a part of a reversing mechanism and a transport device. (First Embodiment) It is explanatory drawing in plan view which shows a part of a reversing mechanism and a transport device. (First Embodiment) It is an exploded perspective view which shows the attachment part of the reversing mechanism. (First Embodiment) It is a diagram which shows the power transmission system. (First Embodiment) 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. (First Embodiment) It is sectional drawing in the direction of line IX-IX in FIG. (First Embodiment) It is a diagram which shows the transmission system of the cutting drive mechanism in another embodiment. (Second Embodiment) It is an overall side view of the combine. (Second Embodiment) It is an overall plan view of the combine. (Second Embodiment) It is a top view of the cutting part. (Second Embodiment) It is a longitudinal side view of the connection part between a cutting part and a feeder. (Second Embodiment) It is a development view of an auger. (Second Embodiment) It is a side view of the cutting part. (Second Embodiment) It is a partial longitudinal front view of a cutting part. (Second Embodiment) It is a perspective view of the side wall part. (Second Embodiment) It is a cross-sectional plan view of the position adjustment part. (Second Embodiment) It is a longitudinal front view of the support part of the auger rotation shaft. (Third Embodiment) It is a left side view of the all-culm harvester type combine. (Third Embodiment) It is a right side view of the all-culm harvester type combine. (Third Embodiment) It is a top view of the all-culm harvester type combine. (Third Embodiment) It is a right side view which shows the threshing right middle cover and the tank right cover. (Third Embodiment) It is a rear view which shows the state which the threshing right middle cover and the tank right cover are opened. (Third Embodiment) It is a top view which shows the open state and the closed state of the threshing right middle cover. (Third Embodiment) It is a rear view which shows the support structure of the right middle cover of threshing. (Third Embodiment) It is a top view which shows the threshing hinge part and the holding mechanism of the threshing right middle cover. (Third Embodiment) It is a rear view which shows the threshing lock mechanism. (Third Embodiment) It is a right side view which shows the threshing right rear cover and the right rear cover. (Third Embodiment) It is a rear view which shows the support structure of the right rear cover of threshing. (Third Embodiment) It is a front view which shows the grain lock mechanism of the tank right cover. (Third Embodiment) It is a right side view which shows the support structure of a damper and the grain lock mechanism. (Third Embodiment) It is a left side view which shows the threshing left front cover, threshing left lower cover, threshing left rear upper cover, and threshing left rear lower cover. (Third Embodiment) It is a front view which shows the open state and the closed state of the threshing left front cover. (Third Embodiment) It is a rear view which shows the rear upper cover and the rear lower cover. (Third Embodiment) It is a partial cross-sectional view which shows the support structure of the rear lower cover.

[First 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 throw-in type 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 (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 of the vehicle body frame 1 around the horizontal horizontal axis X, 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 part 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 wheels 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 (not shown) in the front-rear direction. ) 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 center. 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 diameter of the driven drum 35 of the transport device 3 is not so large for the length in the axial direction. 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.

[Modified example of the first embodiment]
[1]
In the above embodiment, the cutting unit drive mechanism 26 transmits the rotational power from the power transmission mechanism 42 on the opposite side of the transfer device 3 from the input gear 39 which is the input location of the reverse power. An example of a structure provided between the transmission pulley 36, which is a location, 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, but it is not always the case. It is not limited to this 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]
In the above embodiment, the cutting unit drive mechanism 26 transmits the rotational power from the power transmission mechanism 42 on the opposite side of the transfer device 3 from the input gear 39 which is the input location of the reverse power. An example of a structure provided between the transmission pulley 36, which is a location, 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, but it is not always the case. It is not limited to this 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 treatment device 2.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

[3]
In the above embodiment, the drive input shaft of the reverse rotation electric motor 60 is 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 32, it 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]
In the above embodiment, the motor output gear 61 of the reversing electric motor 60 is always meshed with the input gear 39, but the structure is not necessarily limited to this.
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.

[5]
The above embodiment is applicable not only to the wheel traveling type combine but also to the crawler traveling type combine.

[Second Embodiment]
Embodiments of the present invention will be described with reference to the drawings. In the following description, the direction of the arrow "F" is the "front side of the aircraft" (see FIGS. 11 and 12), the direction of the arrow "B" is the "rear side of the aircraft" (see FIGS. 11 and 12), and the arrow " The direction of "L" is defined as "the left side of the aircraft" (see FIG. 12), and the direction of the arrow "R" is defined as "the right side of the aircraft" (see FIG. 12).

[Overall composition of combine harvester]
11 and 12 show a combine (ordinary type combine) which is an example of a harvester. This combine harvests a planted grain stalk and transports it rearward, a harvesting transport section 101, an operating section 103 covered with a cabin 102, and a threshing device 104 that threshes the grain stalk cut by the reaping transport section 101. , A grain tank 105 for storing grains obtained by threshing by the threshing device 104, a driving unit 107 having an engine 106 as a power source, and a pair of left and right front wheels that cannot be steered and are rotationally driven. 108, a pair of left and right rear wheels 109 that can be steered and the like are provided. On the left side of the grain tank 105, a screw conveyor type grain discharge device 110 for transporting stored grains to the outside of the machine body is provided.

The cutting transport unit 101 is provided in the front part of the machine body, and has a cutting unit 111 that cuts the planted culms to be planted and gathers the cut culms toward the center in the cutting width direction, and a cutting unit 111 that is cut and gathered in the center. It is provided with a feeder 112 as a transport unit for transporting the grain culm toward the threshing device 104 at the rear of the machine body. The rear end of the feeder 112 is supported by the airframe so as to swing up and down around the horizontal axis. Then, the entire cutting transport unit 101 including the feeder 112 and the cutting unit 111 is configured to be able to swing up and down by the hydraulic cylinder for cutting and lowering (hereinafter referred to as the cutting and lowering cylinder) 13 as an actuator. The cutting unit 111 moves up and down in a descending work state in which the cutting transport unit 101 is swung up and down by the cutting elevating cylinder 113, and a ascending / non-working state in which the cutting unit 101 is raised to a higher position from the ground. It is operated up and down.

As shown in FIG. 14, the feeder 112 has a plurality of endless rotating chains 119 wound around the front and rear wheel bodies 118 and locked over the plurality of endless rotating chains 119 in a tubular conveyor case 117. A transport conveyor on which the transport body 120 is erected is provided, and the cut grain culm delivered from the cutting unit 111 is configured to be conveyed rearward and upward.

The threshing device 104 is located at a low position in the central portion in the left-right direction of the machine body, and a grain tank 105 and an engine 106 are provided above the threshing device 104. Specifically, the grain tank 105 and the engine 106 are arranged in the front-rear direction in a state where the grain tank 105 is located on the front side of the machine body and the engine 106 is located on the rear side of the machine body. The outer sides of the left and right sides of the threshing device 104 are covered with the exterior cover 121.

As shown in FIG. 11, a pair of left and right main frames 122 extending in the front-rear direction of the machine body are provided in the lower part of the machine body. The left and right main frames 122 support the entire fuselage. The left and right main frames 122 are formed in a substantially U-shape in cross section, and are provided long in the front-rear direction from the front portion of the fuselage to the rear portion of the fuselage. The left and right front wheels 108 and the left and right rear wheels 109 are provided at positions lower than the left and right main frames 122, and the left and right front wheels 108 and the left and right rear wheels 109 are in the left-right direction of each of the left and right main frames 122. It is provided so as to be located on the outer side, and the left and right main frames 122 are supported by the left and right front wheels 108 and the left and right rear wheels 109.

[Mowing section]
As shown in FIGS. 11 and 12, a weeding tool 123 for guiding the weeding of the culm to be cut to the cutting section 111, and a rotary reel 124 for scraping the tip side of the planted culm to be cut toward the rear. It is equipped with a varican-shaped cutting blade 125 that cuts and cuts the root of the planted culm, and an auger 126 that gathers the cut culm toward the center in the cutting width direction.

As shown in FIGS. 13 and 16, the cutting section 111 supports the cutting section frame 127 that supports the rotary reel 124, the cutting blade 125, the auger 126, etc., and the rotary reel 124 that can be raised and lowered with respect to the cutting section frame 127. A reel frame 128, and a reel elevating hydraulic cylinder (hereinafter referred to as a reel cylinder) 29 as an elevating operation mechanism for elevating and lowering the reel frame 128, which is provided over the upper portion of the cutting portion frame 127 and the reel frame 128, are provided. Has been done.

As shown in FIG. 13, the cutting section frame 127 is located on the rear side of the cutting edge 125 and the back surface 131 on which the transport inlet 130 (see FIG. 14) for the feeder 112 is formed and connected to the feeder 112. It has a bottom surface portion 132 for receiving and guiding the cut grain culm, and left and right side wall portions 133 located at both left and right end portions of the cutting portion 111. The left and right side wall portions 133 have a rear end portion connected to the back surface portion 131 and a lower end portion connected to the bottom surface portion 132, and the front end portion supports the weeding tool 123.

As shown in FIGS. 13 and 14, the auger 126 is located in a state of being close to the upper side of the bottom surface portion 132, and is provided in a state of being erected over the left and right side wall portions 133. The auger 126 is provided with a pair of left and right screw blades 135 on the outer periphery of the large-diameter auger drum 134, which are laterally fed so as to gather toward the front end of the feeder 112 toward the center side in the width direction as the auger drum 134 rotates. , A rod-shaped scraping body 136 that moves in and out of the auger drum 134 is provided at a plurality of locations in the circumferential direction at a location facing the front end entrance of the feeder 112.

As shown in FIGS. 13 and 15, the scraping body 136 rotates the auger drum 134 with respect to the support shaft 137 supported in a fixed position at a position eccentric with respect to the rotation shaft core of the auger drum 134. It is rotatably supported along with it, and is configured so that the amount of protrusion from the outer periphery of the auger drum 134 changes as the auger drum 134 rotates.

As shown in FIG. 13, the feeder 112 is connected to the center position in the substantially left-right direction of the back surface portion 131. Therefore, the plurality of scraping bodies 136 are provided near the center position in the left-right direction of the auger 126, and the left and right screw blades 135 located on the left and right sides of the plurality of scraping bodies 136 have substantially the same transport length. ing.

As shown in FIG. 14, the scraping body 136 is supported in a state of being spaced by about 90 degrees in the circumferential direction of the support shaft 137, and is spaced in the axial center direction at locations corresponding to the same phase. There are four each. Therefore, a total of 16 scraping bodies 136 are provided.

The left and right side wall portions 133 are configured by a single plate frame structure having an upper folded portion 138 and a front folded portion 139 folded in an L shape toward the outer side in the left-right direction at the upper side portion and the front side portion. ing.

To add an explanation, as shown in FIGS. 16, 17, and 18, the side wall portion 133 includes a side wall main body portion 140 having a vertical posture and a single plate configuration over substantially the entire area of the side wall portion 133. An upper folded portion 138 that is folded back in an L shape toward the outer side in the left-right direction is integrally formed on the upper edge portion of the side wall main body portion 140 over the entire front-rear direction. Further, a front folded portion 139 that is folded back in an L shape toward the outer side in the left-right direction is integrally formed on the front edge portion of the side wall main body portion 140 over the entire vertical direction.

A support bracket 141 for supporting the lower end of the reel cylinder 129 is mounted and supported on the upper surface of the upper folded portion 138 in a horizontal posture. The support bracket 141 is formed in a substantially U shape in front view, and the lower surface side is welded and fixed to the upper surface portion of the upper folded portion 138. The lower end of the reel cylinder 129 is pivotally connected to the support bracket 141 so as to enter the left and right middle portions of the support bracket 141 and swing back and forth by pins 142 inserted over the left and right side portions of the support bracket 141.

A vertical reinforcing member 143 made of a plate in a vertical posture is provided over the lower side surface of the upper folded portion 138 and the side wall main body 140 in the vertical posture. Two vertical reinforcing members 143 are provided so as to be separated from each other in the front-rear direction. The two vertical reinforcing members 143 are configured by using a U-shaped member 144 formed by bending the plate body into an inverted U-shape in a side view. The U-shaped member 144 has a back plate portion 144a and front and rear vertical plate portions 144b, and the back plate portion 144a is a lower surface portion of the upper folded portion 138 in a state where the front and rear vertical plate portions 144b extend downward. It is integrally connected to. The two vertical reinforcing members 143 are composed of the front and rear vertical plate portions 144b of the U-shaped member 144, and are provided at positions corresponding to the attachment points of the support bracket 141 that supports the reel cylinder 129.

A horizontal reinforcing member 145 is provided, which is composed of a horizontal plate body that connects the lower end edges of the two vertical reinforcing members 143 and is integrally connected to the side wall main body 140. The lateral reinforcing member 145 extends forward from the vertical reinforcing member 143 located on the front side, and extends rearward from the vertical reinforcing member 143 located on the rear side. Both front and rear portions of the lateral reinforcing member 145 are integrally connected to the upper folded portion 138. Further, the left-right inward edge of the lateral reinforcing member 145 is integrally connected to the side wall main body 140 by welding or the like over the entire area in the front-rear direction. With such a configuration, it is possible to increase the supporting strength for supporting the rotary reel 124 while having a simple configuration of a single plate.

As shown in FIG. 18, the weeding tool 123 has a rod-shaped weeding frame 146 that is located at the lower part and extends in the front-rear direction, and is integrally connected to the weeding frame 146 in the middle part in the front-rear direction and is moved upward. A vertical frame 147 made of an extending angle material is provided. The weeding tool 123 is entirely supported by the weeding frame 146 and the vertical frame 147.

The left and right weeding tools 123 are supported by being connected to the front folded portion 139 of the left and right side wall portions 133, respectively. The weeding frame 146 extends integrally from the rear end of the weeding tool 123 toward the rear. A flange portion 148 is provided at the rear portion of the weed frame 146. The front folded-back portion 139 is formed with a weeding opening 149 through which the weeding frame 146 is inserted in the front-rear direction. The flange portion 148 is bolted to the front folded portion 139 in a state where the weed frame 146 is inserted through the weed opening 149 and the flange portion 148 faces the front portion of the front folded portion 139 in a face-to-face posture. Further, the connecting bracket 150 extends rearward from the upper part of the vertical frame 147, and the rear end portion of the connecting bracket 150 is bolted to the front folded-back portion 139.

A lower front reinforcing member 151 having an L-shape in a plan view is provided at a portion of the front folded portion 139 facing the flange portion 148 in a face-to-face posture, and the lower front reinforcing member 151 is a flange. It is bolted together with the 48 parts and the front folded part 139 in a tightened state.

Similarly, the portion of the front folded-back portion 139 facing the connecting bracket 150 is also provided with the upper front reinforcing member 152 having an L-shape in a plan view in a state of facing each other in a face-to-face posture. The upper front reinforcing member 152 is bolted together with the connecting bracket 150 and the front folded portion 139 in a tightened state.

In the configuration in which the weeding tool 123 is supported on the front folded portion 139, the weeding opening 149 formed in the front folded portion 139 and the bolt insertion hole formed in the flange portion 148 are larger than the outer diameter of the bolt. It may be formed in a large-diameter hole. With this configuration, it is possible to change and adjust the mounting position of the weeding tool 123 with respect to the side wall portion 133. The front folded-back portion 139 is formed in an inclined posture which is located on the front side toward the upper side. Therefore, the position of the weeding tool 123 in the front-rear direction can be changed by changing the position in the vertical direction.

As shown in FIGS. 16 and 18, a plate-shaped side reinforcing member 153 that is erected from the side wall portion 133 toward the lateral side and extends in the front-rear direction is provided at a lower front portion of the side wall portion 133. There is. The front end of the side reinforcing member 153 is integrally connected to the upper and lower intermediate portions of the front folded portion 139, and the rear end extends to the front and rear intermediate portions of the lower end edge of the side wall main body portion 140. The left-right inward edge of the side reinforcing member 153 is integrally connected to the side wall main body 140 by welding or the like over the entire area in the front-rear direction.

Then, a cutting blade driving unit 154 that drives the cutting blade 125 by the power transmitted from the machine body side while being supported by the side reinforcing member 153 is provided. The cutting blade drive unit 154 has a gear-type transmission mechanism inside the casing. The cutting blade drive portion 154 is inserted and mounted from above through an opening 155 formed in the side reinforcing member 153, and a flange portion 156 provided in the casing is connected to the side reinforcing member 153 by a bolt.

Power from the airframe side is transmitted to the relay transmission shaft 157 provided at the rear of the left side wall portion 133 via a transmission mechanism (not shown). As shown in FIG. 16, a cutting blade transmission mechanism 158 that transmits power from the relay transmission shaft 157 to the cutting blade 125 is provided. The cutting blade transmission mechanism 158 includes a drive wheel body 159 provided on the relay transmission shaft 157, an input wheel body (not shown) provided on the cutting blade drive unit 154, and a drive wheel body 159 and an input wheel. A transmission belt 161 wound around the body is provided.

Although not described in detail, the cutting blade drive unit 154 converts the rotational power around the horizontal axis to the rotational power around the vertical axis, and provides a well-known cutting blade operation mechanism 162 including an eccentric cam mechanism and a slide mechanism. It is configured to transmit to the cutting blade 125 via the cutting blade 125 to reciprocate the cutting blade 125.

As shown in FIG. 18, in addition to being connected to the lower end of the side wall portion 133, a plate-shaped front bottom plate portion 163 that is erected outward on the lateral side and along the lower end of the front lower portion is provided. .. The front bottom plate portion 163 extends over the lower end portion of the front folded portion 139 and the front end portion of the bottom surface portion 132 in a side view. The front end portion of the front bottom plate portion 163 is bolted to the lower end portion of the front folded portion 139 so as to be connected to the flange portion 148 and tightened together with the lower front reinforcing member 151. There is. The rear end portion of the front bottom plate portion 163 is bolted to the rear end portion of the side reinforcing member 153 in the vertical orientation.

A plate-shaped connecting reinforcing member 164 is provided over the side reinforcing member 153 and the lower end of the front folded-back portion 139. The upper end of the connecting reinforcing member 164 is integrally connected to the front and rear intermediate portions of the side reinforcing member 153, and the lower end of the connecting reinforcing member 164 is integrally connected to the lower end of the front folded-back portion 139. A cover body 165 that covers the cutting blade operating mechanism 162 from the outside is attached to the connecting reinforcing member 164.

As shown in FIG. 20, an auger opening 167 is formed in the side wall portion 133 so that the rotating shaft 166 of the auger 126 can be inserted. A support plate 169 having a bearing portion 168 that covers the auger opening 167 and rotatably supports the rotating shaft 166 is provided on the lateral outer side of the side wall portion 133. The support plate 169 is formed in a rectangular shape in a side view, and a plurality of portions are fixed to the side wall portion 133 (side wall main body portion 140) by bolts.

As shown in FIG. 18, an auger transmission mechanism 171 that transmits power from the relay transmission shaft 157 to the auger 126 is provided. The auger transmission mechanism 171 was wound around the sprocket 172 provided on the relay transmission shaft 157, the sprocket 173 (an example of a drive wheel) provided on the rotating shaft 166 of the auger 126, and each

sprocket

172, 173. The endless rotating chain 174 (an example of the endless rotating body), the tension wheel 175 that applies tension to the endless rotating chain 174, and the tension wheel 175 that changes the tension force can be repositionably supported. A position adjusting unit 176 is provided.

As shown in FIG. 19, the position adjusting portion 176 is slidably supported in the vertical direction with respect to the fixed support member 177 having a U-shape in a plan view and being integrally fixed to the support plate 169. It is provided with a U-shaped movable member 178 in a plan view. The tension wheel 175 is rotatably supported by a support shaft 179 provided on the movable member 178. Therefore, the position adjusting unit 176 is supported by the support plate 169.

The fixed support member 177 has a back plate portion located inward in the left-right direction, and the movable member 178 has a back plate portion located outward in the left-right direction, so that the movable member 178 fits into the fixed support member 177. ing. The movable member 178 and the fixed support member 177 are fixed by fastening a plurality of bolts Bo that are inserted in the front-rear direction. Bolts are formed at the top and bottom on both front and rear sides. The bolt insertion holes formed in the fixed support member 177 are elongated in the vertical direction. When the bolts are loosened, the movable member 178 can change its vertical position within the range of the elongated hole, and the tension wheel body 175 can be fixed by fastening the bolt Bo at an arbitrary position.

[Modified example of the second embodiment]
[1]
In the above embodiment, the support bracket 141 for supporting the end portion of the reel cylinder 129 is mounted and supported on the upper surface portion of the upper folded portion 138, but instead of this configuration, the end portion of the reel cylinder 129 is placed on the side wall. It may be configured to support at the upper and lower intermediate positions of the side wall main body portion 140 of the portions 133.

[2]
In the above embodiment, the vertical reinforcing member and the horizontal reinforcing member are provided, but the configuration may not include such a reinforcing member.

[3]
In the above embodiment, the side reinforcing member and the front bottom plate are provided, but such a reinforcing member may not be provided.

[4]
In the above embodiment, the weeding tool is provided with a rod-shaped weeding frame having a flange portion, and the flange portion is bolted to the front folded portion in a face-to-face state. However, instead of this configuration, weeding is performed. A wall surface in a vertically oriented posture may be formed at the rear portion of the tool, and this wall surface may be bolted to the front folded portion in a surface contact state.

[5]
In the above embodiment, the position adjusting portion that supports the tension wheel so as to be repositionable is supported by the support plate, but instead of this configuration, the position adjusting portion may be supported by the side wall portion. ..

[6]
The above embodiment can be applied to a harvester which is located at the front part of the machine and is provided with a cutting part for cutting the planted culm.

[Third Embodiment]
A mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of arrow F in each drawing is "front side of the aircraft", the direction of arrow B is "rear side of the aircraft", the direction of arrow L is "left side of the aircraft", and the direction of arrow R is "right side of the aircraft". And.

[Overall composition of combine harvester]
21, FIG. 22, and FIG. 23 show a head-feeding combine (corresponding to the "combine" according to the present invention). The combine is provided with an airframe frame 201 and a traveling device 202. The traveling device 202 is provided with a pair of left and right front wheels 202C and a pair of left and right rear wheels 202B. In front of the machine, a cutting section 203 (an example of a harvesting section) for cutting planted culms is provided. The cutting section 203 is provided with a scraping reel 203a for scraping the planted culm, a cutting blade 203b for cutting the planted culm, and a scraping auger 203c for scraping the harvested culm.

A driving cabin 204 (an example of a driving unit) is provided at the front of the aircraft. The driving cabin 204 is provided behind the cutting section 203. Behind the operating cabin 204, a threshing device 205 for threshing all the culms of the harvested culms is provided. A feeder 206 for transporting the harvested culm toward the threshing device 205 is provided across the cutting section 203 and the threshing device 205. Above the threshing device 205, a grain tank 207 for storing the grains obtained by the threshing process of the threshing device 205 is provided. A grain discharge device 208 for discharging grains in the grain tank 207 is provided. At the rear of the threshing device 205, a straw shredding device 209 for shredding the straw after the threshing process is continuously provided.

On the right side surface of the threshing device 205, the first transfer device 210 for transporting the first item of the threshing process of the threshing device 205 to the grain tank 207 is provided. On the lower right side of the threshing device 205, a second transport device 211 for returning the second product of the threshing process of the threshing device 205 to the threshing device 205 is provided. Inside the grain tank 207, a leveling device 212 for leveling the grains put into the grain tank 207 by the first transport device 210 is provided. The leveling device 212 is a screw extending in the left-right direction of the machine body. On the right side surface of the grain tank 207, a power transmission mechanism 213 (see FIG. 24) for transmitting the power branched from the first transport device 210 to the leveling device 212 is provided.

An engine 214 is provided behind the threshing device 205. A radiator 215 and a fan 216 are provided on the right side of the engine 214. On the right side of the radiator 215, a dustproof case 217 for removing dust from the outside air supplied to the radiator 215 is provided. A fuel tank 218 is provided below the engine 214.

Boarding / alighting decks 219 are provided on the left and right sides of the driving cabin 204. A boarding / alighting step 220 is provided behind the boarding / alighting deck 219 on the left. The boarding / alighting step 220 can swing around an axis extending in the vertical direction, and can be changed into a boarding / alighting posture projecting to the left of the machine body and a storage posture along the body.

A work deck 221 is provided above the rear part of the threshing device 205. The work deck 221 is composed of an upper work deck 221a and a lower work deck 221b. The upper work deck 221a is located directly above the threshing device 205 and directly behind the engine 214. The lower work deck 221b is provided so as to project to the right from the upper work deck 221a, and is arranged at a position lower than the upper work deck 221a. An elevating step 222 is provided at the rear of the work deck 221. Specifically, the elevating step 222 is hung on the rear part of the lower work deck 221b.

[Cover on the right side of the aircraft]
As shown in FIG. 22, on the right side surface of the aircraft, a threshing right front cover 230, a threshing right middle cover 240 (an example of a threshing device cover), a threshing right rear cover 250, a right rear cover 260, and a tank right cover 270 ( An example of a grain tank cover) is provided.

[Threshing right front cover]
As shown in FIGS. 22, 24, and 26, the threshing right front cover 230 is provided on the right side surface of the threshing device 205 and covers the right side surface of the front portion of the threshing device 205. The threshing right front cover 230 is supported by a stay 205a erected on the right side surface of the threshing device 205 and a front portion of the grain tank 207.

[Threshing right middle cover]
As shown in FIG. 24 and the like, the threshing right middle cover 240 is provided on the right side surface of the threshing device 205 in a state where it can swing around the axis X1 extending in the vertical direction. The threshing right middle cover 240 is divided into a closed state (solid line in FIG. 26) covering the right side surface of the threshing device 205 and an open state (two-dot chain line in FIGS. 25 and 26) in which the right side surface of the threshing device 205 is opened. It is configured to be switchable. The threshing right middle cover 240 is provided on the right side surface of the threshing device 205 in the left-right direction of the machine body, which is the side surface on which the first transfer device 210 and the second transfer device 211 are arranged. The threshing right middle cover 240 covers from the rear end to the front end of the first transport device 210. The threshing right middle cover 240 covers the front portion of the second transfer device 211. A reinforcing member 241 having a convex cross section is attached to the left side surface of the threshing right middle cover 240, that is, the inner surface of the threshing right middle cover 240 in the left-right direction of the machine body.

As shown in FIG. 24 and the like, a threshing hinge portion C is provided at the front portion of the threshing right middle cover 240. The threshing hinge portion C supports the threshing device 205 in a state in which the threshing right middle cover 240 can be swung around the axis X1 extending in the vertical direction. As shown in FIG. 27, the threshing hinge portion C is composed of two upper and lower bearing members 205b supported by the stay 205a and two upper and lower bearing members 242 provided on the front portion of the threshing right middle cover 240. It is configured. At the front of the threshing right middle cover 240, two upper and lower box-shaped members 243 for supporting the bearing member 242 on the threshing right middle cover 240 are provided. The free end of the round bar-shaped support shaft member 205b extending in the vertical direction is inserted into the cylindrical bearing member 242, whereby the threshing right middle cover 240 swings around the central axis of the support shaft member 205b. It is possible.

As shown in FIG. 24 and the like, a holding mechanism D for holding the threshing right middle cover 240 in the open state is provided at the front portion of the threshing right middle cover 240. As shown in FIGS. 27 and 28, the holding mechanism D includes a lock receiving member 244 provided on the front portion of the threshing right middle cover 240, a support member 205c supported by the stay 205a, and a lock member 245. It is composed of. The lock receiving member 244 is fixed to the threshing right middle cover 240, the reinforcing member 241 and the box-shaped member 243 by welding. The lock receiving member 244 includes an elongated hole 244a formed along the direction in which the threshing right middle cover 240 extends. The lock member 245 is a rod-shaped member formed in an inverted U shape. One end of the lock member 245 is supported by the support member 205c in a state where it can swing around an axial center extending in the vertical direction and can move in the vertical direction. The other end of the lock member 245 is inserted into the elongated hole 244a. At the other end of the lock member 245, a small diameter portion having a diameter smaller than that of the remaining large diameter portion is formed.

When the threshing right middle cover 240 is in the closed state (solid line in FIG. 26, FIG. 27, FIG. 28), the small diameter portion at the tip of the other end of the lock member 245 is located at the rear end of the elongated hole 244a. The lock member 245 swings as the threshing right middle cover 240 opens, and the other end of the lock member 245 moves forward inside the elongated hole 244a. When the right middle cover 240 for threshing is opened (two-dot chain line in FIGS. 25 and 26), the other end of the lock member 245 enters the large diameter portion formed at the tip of the elongated hole 244a and moves downward. To do. In this state, the other end of the lock member 245 cannot move inside the elongated hole 244a, and the threshing right middle cover 240 is held in the open state by the holding mechanism D. When the operator lifts the lock member 245 upward, the small diameter portion at the tip of the lock member 245 becomes movable inside the elongated hole 244a, the holding by the holding mechanism D is released, and the threshing right middle cover 240 is closed. It becomes possible to switch.

As shown in FIG. 24 and the like, a threshing lock mechanism E is provided at the rear of the threshing right middle cover 240. The threshing lock mechanism E is configured to be switchable between a locked state in which the threshing right middle cover 240 is held in the closed state and an unlocked state in which the threshing right middle cover 240 is allowed to be switched to the open state. As shown in FIG. 29 and the like, the threshing lock mechanism E includes an engaged portion 210a provided on the machine body side, an engaging portion 246 provided on the cover side (the side of the threshing right middle cover 240), and a threshing lock. It is composed of an operation unit 247.

The engaged portion 210a is a rod-shaped member formed in an inverted U shape, and is supported on the right side surface of the first transport device 210. The engaging portion 246 is provided on the left side surface of the threshing right middle cover 240, that is, on the inner surface of the threshing right middle cover 240 in the left-right direction of the machine body. The engaging portion 246 includes a claw-shaped member that can be engaged with the engaged portion 210a, and is operated by the threshing lock operating portion 247. The threshing lock operation portion 247 is provided so as to extend downward from the engaging portion 246, and the lower end portion formed in a ring shape is provided so as to project downward from the rear portion of the threshing right middle cover 240.

When the threshing right middle cover 240 is in the closed state (FIGS. 26 and 29), the engaging portion 246 is engaged with the engaged portion 210a, and the threshing lock mechanism E is in the locked state. When the operator pulls the lower end of the threshing lock operation unit 247 downward, the engagement between the claw-shaped member of the engaging portion 246 and the engaged portion 210a is released, and the threshing lock mechanism E is unlocked from the locked state. It is switched to the state, and switching from the closed state to the open state of the threshing right middle cover 240 is allowed. When the right middle cover 240 for threshing is closed from the open state, the engaging portion 246 comes into contact with the engaged portion 210a, and the claw-shaped member of the engaging portion 246 is pushed open by the engaged portion 210a and engaged. The portion 246 engages with the engaged portion 210a.

As shown in FIG. 24 and the like, a handle 248 is provided at the rear end of the lower part of the threshing right middle cover 240. The handle 248 is a U-shaped member, and is provided in a state of protruding downward from the lower part of the threshing right middle cover 240. The ring-shaped lower end of the threshing lock operation unit 247 is located inside the U-shape of the handle 248.

With the above configuration, the threshing right middle cover 240 swings and opens around the axis X1 located in the front portion thereof, so that the rear part of the threshing device 205, particularly the most transporting device 210, can be easily maintained. .. Further, even if the threshing lock mechanism E is unintentionally released during traveling, the threshing right middle cover 240 is kept in a closed state by the wind pressure.

[Threshing right rear cover]
As shown in FIG. 30 and the like, the threshing right rear cover 250 is provided on the right side surface of the threshing device 205 and covers the rear right surface of the threshing device 205. The threshing right rear cover 250 is provided adjacent to the dustproof case 217 on the lower side.

The threshing right rear cover 250 is detachably provided to the machine body. Specifically, the threshing right rear cover 250 includes two upper engaging portions 251, a front lower engaging portion 252, and a rear lower engaging portion 253, as shown in FIGS. 30 and 31. .. The upper engaging portion 251 is a claw-shaped member that can be engaged with the support rod 201a provided on the machine body side. The support rod 201a is a rod-shaped member that is supported by the fuel tank frame 201b of the airframe frame 201 and extends along the front-rear direction of the airframe. The front lower engaging portion 252 has a nut welded to the threshing right rear cover 250, and is configured to be detachable with a bolt to the fuel tank support plate 201c of the machine frame 201. The rear lower engaging portion 253 has a nut welded to the threshing right rear cover 250, and is configured to be detachable with a bolt from the fuel tank frame 201b of the machine frame 201.

The upper engaging portion 251 and the front lower engaging portion 252 and the rear lower engaging portion 253 are provided on the left side surface of the threshing right rear cover 250, that is, on the inner surface of the threshing right rear cover 250 in the left-right direction of the machine body. The bolt for fixing the front lower engaging portion 252 to the fuel tank support plate 201c is hidden by the threshing right rear cover 250, and can be attached and detached by inserting a hand from under the threshing right rear cover 250. The bolt for fixing the rear lower engaging portion 253 to the fuel tank frame 201b is hidden by the threshing right rear cover 250, and can be attached and detached by inserting a hand from under the threshing right rear cover 250.

[Right rear cover]
As shown in FIG. 30, the right rear cover 260 is provided on the right side surface of the threshing device 205 in a state of being adjacent to the rear side of the threshing right rear cover 250. The right rear cover 260 covers the rear right surface of the threshing device 205 and the right surface of the lower work deck 221b. On the upper surface and the lower surface of the right rear cover 260, mounting portions 261 for attaching the right rear cover 260 to the machine body by bolts are provided. The mounting portion 261 is composed of a recess and a hole provided at the bottom of the recess. By hiding the head of the bolt in the recess, the bolt that attaches the right rear cover 260 to the fuselage is hidden.

[Tank right cover]
As shown in FIG. 24 and the like, the tank right cover 270 is provided on the right side surface of the grain tank 207 in a state of being adjacent to the upper side of the threshing right middle cover 240. The tank right cover 270 is configured to be switchable between a closed state (solid line in FIG. 25) covering the side surface of the grain tank 207 and an open state (two-dot chain line in FIG. 25) in which the side surface of the grain tank 207 is opened. There is. The tank right cover 270 covers the upper right surface of the first transport device 210 and the power transmission mechanism 213 provided on the right surface of the grain tank 207. A reinforcing member 271 having a convex cross section is attached to the left side surface of the tank right cover 270, that is, the inner surface of the tank right cover 270 in the left-right direction of the machine body.

A grain hinge portion 272 is provided on the upper part of the tank right cover 270. The grain hinge portion 272 supports the tank right cover 270 on the grain tank 207 in a state where it can swing around the axis X2 extending along the front-rear direction of the machine body. In the present embodiment, the grain hinge portion 272 is a hinge, one of the swinging portions of the hinge is attached to the upper part of the tank right cover 270, and the other is attached to the upper part of the grain tank 207.

A grain lock mechanism G is provided at the bottom of the tank right cover 270. The grain locking mechanism G is configured to be switchable between a locked state in which the tank right cover 270 is held in the closed state and an unlocked state in which the tank right cover 270 is allowed to be switched to the open state. As shown in FIG. 32, the grain lock mechanism G has an engaged portion 207a provided on the machine body side and an engaging portion 273 (grain lock) provided on the cover side (the side of the tank right cover 270). It is composed of an example of a main body portion) and a grain lock operation portion 274.

The engaged portion 207a is a rod-shaped member formed in an inverted U shape, and is supported on the right side surface of the grain tank 207. Specifically, the engaged portion 207a is supported by a support member 207b supported on the right side surface of the grain tank 207. The engaging portion 273 includes a claw-shaped member that can engage with the engaged portion 207a, and is operated by the grain lock operating portion 274. The grain lock operation portion 274 is provided so as to extend downward from the engaging portion 273, and the lower end portion formed in a ring shape is provided so as to project downward from the central portion in the lower portion of the tank right cover 270. ..

When the tank right cover 270 is in the closed state (solid line in FIG. 32), the engaging portion 273 is engaged with the engaged portion 207a, and the grain locking mechanism G is in the locked state. When the operator pulls the lower end portion of the grain lock operation portion 274 downward, the engagement between the claw-shaped member of the engagement portion 273 and the engaged portion 207a is released, and the grain lock mechanism G is released from the locked state. It is switched to the unlocked state, and switching from the closed state of the tank right cover 270 to the open state (two-dot chain line in FIG. 32) is allowed. When the tank right cover 270 is closed from the open state, the engaging portion 273 comes into contact with the engaged portion 207a, and the claw-shaped member of the engaging portion 273 is pushed open by the engaged portion 207a to open the engaging portion. 273 engages with the engaged portion 207a.

A handle 275 (an example of a handle portion) is provided at the center of the lower part of the tank right cover 270. The handle 275 is a U-shaped member, and is provided in a state of protruding downward from the lower part of the tank right cover 270. The ring-shaped lower end of the grain lock operation portion 274 is located inside the U-shape of the handle 275.

A damper 276 that extends as the tank right cover 270 rises and swings from the closed state to the open state is provided. The damper 276 holds the tank right cover 270 in the open state. The damper 276 is arranged at the center of the tank right cover 270 in the front-rear direction. The upper end of the damper 276 is supported by the tank right cover 270. Specifically, the upper end of the damper 276 is rotatably attached to a shaft member that penetrates the reinforcing member 271 of the tank right cover 270 in the front-rear direction of the machine body. The lower end of the damper 276 is supported by the support member 207b. Here, the support member 207b is a member supported on the right side surface of the grain tank 207 as described above, and is a member on the machine body side.

In the present embodiment, as shown in FIGS. 24 and 33, when the tank right cover 270 is in the closed state, the grain lock operation unit 274 and the handle 275 of the grain lock mechanism G are connected by the tank right cover 270. It is hidden, and the engaging portion 273 of the grain locking mechanism G is hidden by the threshing right middle cover 240. That is, when the threshing right middle cover 240 is in the closed state, the entire grain locking mechanism G is hidden. Even if the grain locking mechanism G is unintentionally released, if the threshing right middle cover 240 is in the closed state, the unintentional opening of the tank right cover 270 can be suppressed.

Maintenance of the threshing device 205, the grain tank 207, the first transfer device 210, the second transfer device 211, the power transmission mechanism 213, etc. is performed as follows. The operator pulls the lower end of the threshing lock operation unit 247 protruding from the lower part of the threshing right middle cover 240 downward to bring the threshing lock mechanism E into the unlocked state. Then, the operator pulls the handle 248 toward the front to open the threshing right middle cover 240 to the front of the machine. When the threshing right middle cover 240 is in the fully open state, the threshing right middle cover 240 is held in the open state by the holding mechanism D. In this state, maintenance of the threshing device 205, the first transfer device 210, the second transfer device 211, and the like is performed.

Further, when maintaining the grain tank 207, the upper part of the first transport device 210, the power transmission mechanism 213, etc., the operator leans the ladder or the like against the right side surface of the grain removal device 205 as shown in FIG. Climb to a height where the handle 275 of the right cover 270 can be reached, and pull the lower end of the grain lock operation unit 274 protruding from the lower part of the tank right cover 270 downward to bring the grain lock mechanism G into the unlocked state. Then, the operator pulls the handle 275 toward the front and opens the tank right cover 270 upward. The damper 276 keeps the tank right cover 270 in the open state. In this state, maintenance of the grain tank 207, the upper part of the first transport device 210, the power transmission mechanism 213, and the like is performed.

[Cover on the left side of the aircraft]
As shown in FIG. 34 and the like, on the left side surface of the aircraft, a threshing left front cover 280 (an example of a sub-threshing device cover), a threshing left lower cover 290 (an example of a lower threshing device cover), a threshing left rear upper cover 300, and , Threshing left rear lower cover 310 is provided.

[Threshing left front cover]
As shown in FIG. 34, the threshing left front cover 280 is provided on the left side surface of the threshing device 205 in a state where it can swing around the axis X3 extending along the front-rear direction of the machine body. That is, the threshing left front cover 280 is provided on the side surface of the threshing device 205 in the left-right direction of the machine body on the side opposite to the side on which the threshing right middle cover 240 is provided. The threshing left front cover 280 is configured to be switchable between a closed state covering the left side surface of the threshing device 205 (solid line in FIG. 35) and an open state opening the left side surface of the threshing device 205 (two-dot chain line in FIG. 35). Has been done. A reinforcing member 281 having a convex cross section is attached to the right side surface of the threshing left front cover 280, that is, the inner surface of the threshing left front cover 280 in the left-right direction of the machine body.

A threshing left front hinge portion H is provided on the upper part of the threshing left front cover 280. The threshing left front hinge portion H supports the threshing device 205 in a state in which the threshing left front cover 280 can swing around the axis X3 extending along the front-rear direction of the machine body. As shown in FIG. 35, the threshing left front hinge portion H includes two bearing members 205e supported by the stay 205d and a support shaft member provided on the upper part of the threshing left front cover 280 in a posture extending along the front-rear direction of the machine body. It is composed of 282 and. The stay 205d is erected on the left side surface of the threshing device 205. The support shaft member 282 is provided so as to penetrate the reinforcing member 281 of the threshing left front cover 280 in the front-rear direction of the machine body. A round bar-shaped support shaft member 282 extending in the front-rear direction of the machine body is inserted into the bearing member 205e, whereby the threshing left front cover 280 can swing around the central axis of the support shaft member 282.

A threshing left front lock mechanism J is provided at the bottom of the threshing left front cover 280. The threshing left front lock mechanism J is configured to be switchable between a locked state in which the threshing left front cover 280 is held in the closed state and an unlocked state in which the threshing left front cover 280 is allowed to be switched to the open state. As shown in FIG. 35, the threshing left front lock mechanism J includes an engaged portion 205f provided on the machine body side, an engaging portion 283 provided on the cover side (the side of the threshing left front cover 280), and a threshing left front lock. It is composed of an operation unit 284.

The engaged portion 205f is a rod-shaped member formed in an inverted U shape, and is supported on the left side surface of the threshing device 205. Specifically, the engaged portion 205f is supported by a stay 205g erected on the left side surface of the threshing device 205. The engaging portion 283 includes a claw-shaped member that can engage with the engaged portion 205f, and is operated by the threshing left front lock operating portion 284. The threshing left front lock operation portion 284 is provided so as to extend downward from the engaging portion 283, and the lower end portion formed in a ring shape is provided so as to project downward from the central portion in the lower portion of the threshing left front cover 280. ..

When the threshing left front cover 280 is in the closed state (solid line in FIG. 35), the engaging portion 283 is engaged with the engaged portion 205f, and the threshing left front lock mechanism J is in the locked state. When the operator pulls the lower end of the threshing left front lock operating portion 284 downward, the engagement between the claw-shaped member of the engaging portion 283 and the engaged portion 205f is released, and the threshing left front lock mechanism J is released from the locked state. It is switched to the unlocked state, and switching from the closed state of the threshing left front cover 280 to the open state (two-point chain line in FIG. 35) is allowed. When the left front cover 280 for threshing is closed from the open state, the engaging portion 283 comes into contact with the engaged portion 205f, and the claw-shaped member of the engaging portion 283 is pushed open by the engaged portion 205f to open the engaging portion. 283 engages with the engaged portion 205f.

A handle 285 is provided at the center of the lower part of the threshing left front cover 280. The handle 285 is a U-shaped member, and is provided in a state of protruding downward from the lower part of the threshing left front cover 280. The ring-shaped lower end of the threshing left front lock operation unit 284 is located inside the U-shape of the handle 285.

Two front and rear dampers 286 are provided, which extend as the threshing left front cover 280 rises and swings from the closed state to the open state. The damper 286 holds the threshing left front cover 280 in an open state. The damper 286 is arranged at the front side and the rear side of the central portion of the threshing left front cover 280 in the front-rear direction. The damper 286 is provided on the outer side surface of the two reinforcing members 281 extending in the vertical direction in the front-rear direction of the machine body. The upper end of the damper 286 is supported by the stay 205d. The lower end of the damper 276 is supported by the reinforcing member 281.

[Lower left cover for threshing]
As shown in FIG. 34, the threshing lower left cover 290 is provided on the left side surface of the threshing device 205. That is, the threshing lower left cover 290 is provided on the side surface of the threshing device 205 in the left-right direction of the machine body on the side opposite to the side on which the threshing right middle cover 240 is provided. The threshing lower left cover 290 covers the lower left surface of the threshing device 205. Specifically, the lower left cover 290 for threshing is arranged on the lower left surface of the threshing device 205 and covers a power transmission mechanism (not shown) that distributes and transmits power to the mechanism of the threshing device 205. The threshing left lower left cover 290 is provided adjacent to the threshing left front cover 280 on the lower side.

The threshing lower left cover 290 is detachably provided to the machine body. Specifically, the threshing lower left cover 290 includes two upper locking mechanisms K and two lower engaging portions 291.

The two upper lock mechanisms K are provided on the front side and the back side of the upper part of the lower left cover 290 for threshing. The upper lock mechanism K is configured to be switchable between a locked state in which the lower left cover 290 for threshing is held attached to the machine body and an unlocked state in which the lower left cover 290 for threshing is allowed to be removed from the machine body. As shown in FIGS. 34 and 35, the upper lock mechanism K is formed by an engaged portion 205h provided on the machine body side and a lock portion 292 provided on the cover side (the side of the lower left cover 290 for threshing). It is configured.

The engaged portion 205h is a rod-shaped member extending along the front-rear direction of the machine body, and is supported on the left side surface of the threshing device 205. The lock portion 292 includes a claw-shaped member that can be engaged with the engaged portion 205h. The operating portion of the lock portion 292 is provided on the upper part of the lower left threshing cover 290 in a state of being exposed on the left side surface of the lower left threshing cover 290.

The two lower engaging portions 291 are provided on the lower front side and the rear side of the lower left cover 290 for threshing. The lower engaging portion 291 is a claw-shaped member that can be engaged with the support rod 205k provided on the machine body side. The support rod 205k is a rod-shaped member formed in a U shape, and is supported on the lower left surface of the threshing device 205.

When the lower left cover 290 for threshing is attached to the machine body, the lock portion 292 of the upper lock mechanism K is engaged with the engaged portion 205h, and the lower engaging portion 291 is engaged with the support rod 205k. When the operator operates the lock portion 292, the engagement between the claw-shaped member of the lock portion 292 and the engaged portion 205h is released, the upper lock mechanism K is switched from the locked state to the unlocked state, and the lower left cover for threshing Removal from the 290 aircraft is allowed. When the operator lifts the lower left cover 290 for threshing upward in this state, the lower engaging portion 291 is separated from the support rod 205k, and the lower left cover 290 for threshing is removed from the machine body. When attaching the threshing lower left cover 290 to the machine body, the operator engages the lower engaging portion 291 of the threshing lower left cover 290 with the support rod 205k and presses the threshing lower left cover 290 toward the threshing device 205. The lock portion 292 of the lock mechanism K comes into contact with the support rod 205k, the claw-shaped member of the lock portion 292 is pushed open by the support rod 205k, and the lock portion 292 engages with the support rod 205k.

[Threshing left rear top cover]
As shown in FIG. 35, the threshing left rear upper cover 300 is adjacent to the rear side of the threshing left front cover 280 and is adjacent to the upper side of the threshing left rear lower cover 310. It is provided on the left side of the. The threshing left rear upper cover 300 covers the left side surface of the rear part of the threshing device 205. The threshing left rear upper cover 300 is attached to the machine body by

bolts

301 and 302. The head of the bolt 301 is inserted into a recess provided on the upper surface of the upper cover 300 on the left rear side of threshing, and is hidden in a state where it cannot be seen from the left side. The head of the bolt 302 is hidden by the rear upper cover 320 (described later) and is invisible.

[Threshing left rear lower cover]
As shown in FIG. 35, the threshing left rear lower cover 310 is adjacent to the rear side of the threshing left front cover 280 and is adjacent to the lower side of the threshing left rear upper cover 300. It is provided on the left side surface of 205. The left rear lower cover 310 for threshing covers the left side surface of the rear part of the threshing device 205 and the left side surface of the straw shredding device 209. The lower left rear cover 310 for threshing is attached to the machine body by

bolts

311, 312, 313. The head of the bolt 311 is hidden by the threshing left front cover 280 and is invisible. The head of the bolt 312 is inserted into a recess provided on the rear surface of the left rear lower cover 310 for threshing, and is hidden invisible from the left side view. The head of the bolt 313 is hidden by the upper left rear cover 300 for threshing and is invisible.

[Cover at the rear of the aircraft]
As shown in FIG. 36, a rear upper cover 320 and a rear lower cover 330 are provided at the rear portion of the airframe. The rear upper cover 320 is provided behind the threshing device 205 and covers the rear surface of the threshing device 205. The rear upper cover 320 is attached to the fuselage by four bolts 321. The head of the bolt 321 is inserted into a recess provided on the surface of the rear upper cover 320 so as not to protrude from the surface of the rear upper cover 320.

The rear lower cover 330 is provided behind the threshing device 205 in a state of being adjacent to the lower side of the rear upper cover 320. The rear lower cover 330 covers the rear surface of the threshing device 205, particularly the rear surface of the drive case 205 m provided at the rear of the threshing device 205.

The rear lower cover 330 is provided so as to be removable from the aircraft. Specifically, as shown in FIG. 37, the rear lower cover 330 includes a cover body 331, a frame 332 that supports the cover body 331, and a bolt hole 333 provided in the frame 332. With the upper part of the cover body 331 inserted into the front side of the rear upper cover 320, the frame 332 is attached to the rear frame 201d of the machine body by the bolts passed through the bolt holes 333. The bolt hole 333 is located on the lower surface of the rear lower cover 330, and the bolt for attaching the rear lower cover 330 to the airframe is invisible from the rear view. When performing maintenance of the drive case 205 m, the operator puts his / her hand under the rear lower cover 330 to remove the bolt, moves the rear lower cover 330 downward, and removes the rear lower cover 330 from the machine body.

[Modified example of the third embodiment]
[1]
In the above embodiment, the grain hinge portion 272 is provided on the upper part of the tank right cover 270, and the tank right cover 270 can swing open and close around the axis X2 extending along the front-rear direction of the machine body. The mode of opening and closing the 270 is not limited to this. For example, a grain hinge portion 272 may be provided at the front portion of the tank right cover 270, and the tank right cover 270 may swing open and close around an axis extending in the vertical direction.

[2]
In the above embodiment, the grain lock mechanism G and the handle 275 are provided at the lower part of the tank right cover 270, but the arrangement of the grain lock mechanism G and the handle 275 is appropriately arranged according to the opening / closing direction of the tank right cover 270. It can be changed.

[3]
In the above embodiment, the threshing hinge portion C is provided at the front portion of the threshing right middle cover 240, and the thresh lock mechanism G and the handle 248 are provided at the rear portion of the threshing right middle cover 240. A threshing hinge portion C may be provided at the rear portion, and a grain lock mechanism G and a handle 248 may be provided at the front portion of the threshing right middle cover 240.

[4]
In the above embodiment, the threshing left front cover 280 is provided with the threshing left front hinge portion H, and the threshing left front cover 280 can swing and open and close around the axis X3 extending along the front-rear direction of the machine body. The mode of opening and closing the 280 is not limited to this. For example, similarly to the threshing right middle cover 240, the threshing left front hinge portion H is provided at the front portion of the threshing left front cover 280, and the threshing left front cover 280 can swing and open and close around the axis extending in the vertical direction. May be good. Further, a threshing left front lock mechanism J and a handle 285 may be provided at the rear of the threshing left front cover 280.

[5]
The above embodiment can be applied to a head-feeding combine as well as a head-feeding combine.

[First Embodiment]
3 Conveyor device 26 Cutting unit drive mechanism 32 Drive input shaft 39 Input gear 42 Power transmission mechanism 60 Reverse motor 61 Motor output gear 64 Cover [Second embodiment]
111 Cutting part 112 Transport part 123 Weeding tool 124 Rotating reel 125 Cutting blade 126 Auger 127 Cutting part frame 128 Reel frame 129 Reel cylinder (elevating operation mechanism)
130 Entrance 131 Back 132 Bottom 133 Side wall 138 Upper fold 139 Front fold 140 Side fold 140 Support bracket 143 Vertical reinforcement 145 Horizontal reinforcement 146 Weeding frame 148 Flange 149 Opening 151 for weeding Side reinforcing member 153 Side reinforcing member 163 Front bottom plate part 164 Connecting reinforcing member 166 Rotating shaft 168 Bearing part 169 Support plate 173 Drive wheel body 174 Endless rotating body 175 Tension wheel body 176 Position adjusting part [Third embodiment]
203 Harvesting department (harvesting department)
204 Driving cabin (driving part)
205 Threshing device 207 Grain tank 207b Support member 210 First transport device 240 Threshing right middle cover (threshing device cover)
247 Threshing lock operation unit 270 Tank right cover (grain tank cover)
272 Grain hinge part 273 Engagement part (grain lock body part)
274 Grain lock operation part 275 Handle (handle part)
276 Damper 280 Threshing left front cover (secondary threshing device cover)
290 Lower left cover for threshing (lower threshing device cover)
C Grain removal hinge part E Grain lock mechanism G Grain lock mechanism X1 Axis X2 Axis X3 Axis

Claims

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 reverse 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 location thereof on the opposite side of the transfer device from the input location of the reverse power. The invention according to any one of claims 1 to 4, wherein a cutting unit drive mechanism for transmitting power from the power transmission mechanism to the cutting unit is linked between the side edge of the transport device on the side. combine.
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 section.
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.
It is provided with a cutting section located at the front part of the machine body to mow the planted culms, and a transport section connected to the rear part of the cutting section and transporting the culms cut by the cutting section to the rear.
A weeding tool that guides the weeding of the culm to be cut to the cutting section, a cutting blade that cuts the root of the planted culm, and the cut culm in the left-right direction toward the entrance to the transport section. An auger to be transferred and a cutting section frame for supporting the cutting blade and the auger are provided.
The cutting portion frame has a back portion having an inlet formed and connected to the transport portion, a bottom portion located behind the cutting blade to receive and guide the cut grain culm, and a rear end portion. It has left and right side wall portions that are connected to the back surface portion and have the lower end portion connected to the bottom surface portion and support the weeding tool.
The left and right side wall portions are composed of a single plate frame structure having an upper folded portion and a front folded portion that are folded back in an L shape toward the outer side in the left-right direction at the upper side portion and the front side portion. Harvester.
The cutting portion is provided with a rotary reel that scrapes the cut grain culm rearward, a reel frame that supports the rotary reel so as to be able to move up and down, and an upper portion of the side wall portion and the reel frame, and raises and lowers the reel frame. Equipped with an elevating operation mechanism
The harvester according to claim 12, wherein a support bracket for supporting an end portion of the elevating operation mechanism is mounted and supported on an upper surface portion of the upper folded portion in a horizontal posture.
The harvester according to claim 12 or 13, wherein a vertical reinforcing member made of a plate in a vertical posture is provided over an upper surface portion in a horizontal posture and a side wall main body portion in a vertical posture in the upper folded portion.
A plurality of the vertical reinforcing members are provided at intervals in the front-rear direction.
A horizontal reinforcing member composed of a horizontal plate body connected to the side wall portion while connecting the lower end edges of the plurality of vertical reinforcing members is provided.
The lateral reinforcing member extends forward from the vertical reinforcing member located on the most front side, and extends rearward from the vertical reinforcing member located on the rearmost side.
The harvester according to claim 14, wherein both front and rear portions of the lateral reinforcing member are connected to the upper folded portion.
The harvester according to any one of claims 12 to 15, wherein the weeding tool is connected to the front folded portion.
A rod-shaped weeding frame extending rearward from the rear end of the weeding tool and having a flange at the rear is provided.
A weeding opening through which the weeding frame is inserted in the front-rear direction is formed in the front folded portion.
The claim that the flange portion is connected to the front folded portion in a state where the weed frame is inserted through the weed opening and the flange portion faces the front surface portion of the front folded portion in a face-to-face posture. 16. The harvester according to 16.
A front reinforcing member having an L-shape in a plan view is provided at a portion of the front folded-back portion facing the flange portion in a surface-contacting posture.
The harvester according to claim 17, wherein the front reinforcing member is connected to the flange portion and the front folded portion in a co-tightened state.
A side reinforcing member is provided at a lower front portion of the side wall portion in a state of being erected from the side wall portion toward the lateral side and extending in the front-rear direction.
A plate-shaped front bottom plate portion that is connected to the lower end of the side wall portion, is erected laterally outward, and is provided along the lower end of the front portion lower portion.
The harvester according to any one of claims 12 to 18, wherein the front bottom plate portion extends over a lower end portion of the front folded portion and a front end portion of the bottom surface portion in a side view.
A cutting blade driving unit that drives the cutting blade by the power transmitted from the machine body side is provided in a state of being supported by the side reinforcing member.
The harvester according to claim 19, wherein a connecting reinforcing member is provided over the side reinforcing member and the lower end of the front folded-back portion.
An auger opening is formed in the side wall portion for the rotation shaft of the auger to pass through.
A support plate having a bearing portion that covers the auger opening and rotatably supports the rotating shaft is provided on the lateral outer side of the side wall portion.
A drive wheel body provided on the rotating shaft and to which power for driving is transmitted, an endless rotating body for power transmission wound around the driving wheel body, and a tensioning body for applying tension to the endless rotating body. It is provided with a wheel body and a position adjusting unit that repositionably supports the tension wheel body to change the tension force.
The harvester according to any one of claims 12 to 20, wherein the position adjusting portion is supported by the support plate.
The harvesting department that harvests the crops in the field,
An operation unit provided behind the harvesting unit and
A threshing device provided behind the driving unit and threshing the harvested product harvested by the harvesting unit.
A grain tank provided above the threshing device and storing grains obtained by the threshing device, and a grain tank.
It is provided on one side surface of the threshing device in the left-right direction in a state in which it can swing around an axis extending along the vertical direction, and is closed to cover the side surface of the threshing device and the side surface of the threshing device is opened. Combine with a threshing device cover, which is configured to switch between open and open states.
It is provided on one side surface of the grain tank in the left-right direction in a state adjacent to the upper side of the threshing device cover, and is closed to cover the side surface of the grain tank and the side surface of the grain tank is opened. 22. The combine according to claim 22, comprising a grain tank cover configured to be switchable to an open state.
23. Claim 23, which is provided on the upper part of the grain tank cover and includes a grain hinge portion that supports the grain tank cover on the grain tank in a state where the grain tank cover can swing around an axis extending in the front-rear direction of the machine body. The combine described in.
A grain lock that is provided at the bottom of the grain tank cover and can be switched between a locked state that holds the grain tank cover in the closed state and an unlocked state that allows switching to the open state of the grain tank cover. Equipped with a mechanism
The combine according to claim 24, wherein the grain locking mechanism is hidden when the threshing device cover is in the closed state.
A handle portion provided so as to project downward from the lower part of the grain tank cover is provided.
The grain lock mechanism is provided in a state of protruding downward from the lower part of the grain lock main body and the grain tank cover, and the grain lock mechanism can be switched from the locked state to the unlocked state. Equipped with a grain lock operation unit
When the threshing device cover is in the closed state, the grain lock operating portion and the handle portion of the grain locking mechanism are hidden by the threshing device cover.
The combine according to claim 25, wherein the grain lock main body of the grain locking mechanism is hidden by the grain tank cover.
A damper that extends as the grain tank cover rises and swings from the closed state to the open state is provided.
One end of the damper is supported by the grain tank cover.
The other end of the damper is supported by a support member on the machine body side.
The cover side portion of the grain lock mechanism is supported by the grain tank cover.
The combine according to claim 26, wherein the machine body side portion of the grain locking mechanism is supported by the support member.
A threshing hinge portion provided on the front portion of the threshing device cover and supporting the threshing device cover on the threshing device in a state in which the threshing device cover can swing around an axis extending in the vertical direction.
A threshing lock mechanism provided at the rear of the threshing device cover and capable of switching between a locked state for holding the threshing device cover in the closed state and an unlocked state for allowing the threshing device cover to be switched to the open state. Prepare,
According to claim 22, the threshing lock mechanism is provided in a state of protruding downward from the rear portion of the threshing device cover, and includes a threshing lock operation unit capable of switching the threshing lock mechanism from the locked state to the unlocked state. The combine according to any one of 27.
The threshing device cover is provided on the side surface of the threshing device on both sides in the left-right direction of the machine body on which the most transporting device is arranged, and covers from the rear end to the front end of the first transporting device.
Of both sides of the threshing device in the left-right direction of the machine, the side surface opposite to the side where the threshing device cover is provided is swingably provided around an axis extending along the front-rear direction of the machine, and the side surface of the threshing device. The combine according to any one of claims 22 to 28, comprising a sub-threshing device cover configured to be switchable between a closed state covering the threshing device and an open state in which the side surface of the threshing device is opened.
In a state of being adjacent to the lower side of the sub-threshing device cover, the lower part of the threshing device is provided on the side surface of the left and right sides of the threshing device on the side opposite to the side on which the threshing device cover is provided. 29. The combine according to claim 29, comprising a covering lower threshing device cover.