CN110678062A - Combine harvester and harvester - Google Patents

Abstract

The grain threshing device is provided with a storage hopper (25) which is provided with a storage space for storing grains subjected to threshing and a discharge part capable of discharging the grains below the storage space, and the fuel tank (41) is arranged in a region below the storage hopper (25) in a state of being overlapped with the storage hopper (25) in a plan view.

Description

Combine harvester and harvester

Technical Field

The invention relates to a combine harvester and a harvester.

Background

[ first background Art ]

For example, japanese patent application laid-open No. 2014-183815 discloses the following combine harvester: as an example of the harvester, a driving unit is provided at a front portion of a body, a storage hopper (a "grain storage hopper" in the literature) is provided in a state of being located at a rear side of the driving unit, and a fuel tank is provided in a state of being located at a rear side of the storage hopper.

[ second background Art ]

In addition, in the harvester disclosed in japanese patent application laid-open No. 2014-183815, the threshing device and the grain storage bucket are provided in a horizontally aligned state, and a pair of front and rear bucket support frames are provided in a state where the front and rear sides of the grain storage bucket are supported. The hopper support frame is formed by bending a circular pipe material as a rod-shaped member into a substantially L-shape, one end side of the hopper support frame is connected to the threshing device, and the other end side of the hopper support frame is supported by the machine body frame. With this structure, the storage hopper is supported by the hopper support frame over the front and rear.

[ third background Art ]

Further, the harvester disclosed in japanese patent application laid-open No. 2014-183815 includes a guide portion (a "guide member" in the document) supported by the hopper support frame. The guide portion is formed by bending the rod-shaped member in a substantially L shape, a base end side portion of the guide portion is swingably supported by a front portion of the hopper support frame, and a free end side of the guide portion is along a front-rear direction of the machine body. A cushioning member (a "protective member" in the literature) made of a soft material is attached to the free end side of the guide portion, and a rod-like member fitted around the guide portion is a cylindrical cushioning member.

Patent document 1, Japanese patent laid-open No. 2014-183815.

Disclosure of Invention

[ first problem ]

In the above-described conventional structure, since the entire fuel tank, which is a large-sized component, is disposed in a state of being positioned at the rear side of the storage bucket, the fuel tank is in a state of protruding rearward of the machine body, and the machine body may be lengthened forward and backward or the fuel tank may be damaged by contact with obstacles such as ridges.

Therefore, in the combine harvester having the above-described configuration, improvement of the arrangement structure of the fuel tank is desired.

[ second problem ]

In the above-described harvester, the front and rear end portions of the hopper support frame are connected to the threshing device, and therefore the front and rear length of the storage hopper is limited within the range of the front and rear length of the threshing device. Therefore, the hopper support frame described above is configured such that it is difficult to extend the storage hopper in the front-rear direction in order to increase the amount of stored grain.

In view of the above circumstances, an object of the present invention is to provide a harvester in which the degree of freedom of the arrangement of the storage hopper is improved with respect to the positional relationship between the storage hopper and the threshing device.

[ third problem ]

In the above-described harvester, the guide portion is provided only at a portion near the front portion of the storage bucket, and is not configured to be capable of receiving the operator positioned near the rear portion of the storage bucket. Therefore, the operator positioned near the rear portion of the storage bucket is not blocked by the guide portion, and there is room for improvement in workability and working environment of the bagging work.

In order to achieve such an improvement, a configuration may be considered in which the guide portions are supported to be swingable at both front and rear ends of the hopper support frame, but if the rod-shaped member is bent into a U-shape and the guide portions are supported by both ends of the U-shape to the hopper support frame, it is difficult to externally fit the tubular buffer member to the rod-shaped member as it is.

In view of the above circumstances, an object of the present invention is to provide a harvester in which assembly of a guide portion and a cushioning member is easy, and workability and working environment of a bagging work are improved.

As a means for solving the above-described [ first problem ], a combine harvester according to the present invention includes a storage hopper having a storage space for storing grains subjected to threshing, a discharge portion capable of discharging the grains below the storage space, and a fuel tank provided in a region below the storage hopper in a state of being overlapped with the storage hopper in a plan view.

The storage hopper is located at the upper side, and a working area for collecting grains discharged from the discharge portion with a grain storage bag or the like is formed below the storage hopper. In addition, the storage hopper is formed in a narrow shape with a larger upper width and a smaller width in order toward the lower side, so that grains can be easily discharged by flowing down.

The fuel tank is provided in a region below the storage hopper. That is, the fuel tank is formed to be narrow downward as described above, and the fuel tank is provided by effectively utilizing the area under the storage hopper having the empty area at the lower side.

In this way, by providing the fuel tank in the region under the storage hopper, the amount of projection of the fuel tank to the rear side of the machine body is suppressed, and the possibility of contact with obstacles such as ridges can be reduced by positioning most of the outer surface of the large fuel tank inside the machine body.

In the present invention, it is preferable that the fuel tank projects rearward from a rear end portion of the storage hopper.

According to this aspect, since the rear portion of the fuel tank projects rearward from the rear end portion of the storage hopper, if the fuel fill port is formed in this portion in advance, the fuel filling operation can be performed efficiently from the rear portion side of the body.

In the present invention, it is preferable that the fuel tank is provided in a state of protruding rearward from a rear end portion of the storage bucket at a position closer to one side in the left-right direction of the machine body of the storage bucket, and a work table is provided at a position closer to the other side in the left-right direction of the machine body at a rear side of the storage bucket.

According to this aspect, when refueling is performed with respect to the fuel tank, refueling can be easily performed with respect to the fuel tank without placing the fuel container containing fuel on the work table and placing a heavy burden thereon.

The operation table is located at the other side of the storage hopper in the left-right direction of the machine body, and the fuel tank is located at the one side of the storage hopper in the left-right direction of the machine body.

In the present invention, it is preferable that a bucket support frame supporting the storage bucket in a vertical direction is provided in a state of being erected from a body frame, and the work table is supported by the bucket support frame in a state of being protruded rearward from a rear end portion of the bucket support frame.

According to this aspect, the work table can be stably supported by the strong bucket support frame for supporting the storage bucket. The work table protrudes rearward from the rear end of the bucket support frame, and therefore does not interfere with the work of collecting the grains discharged from the discharge portion in the grain storage bag or the like.

In the present invention, it is preferable that the work table is provided in a state of being spaced upward from the machine body frame, and a fuel assist machine that acts on fuel stored in the fuel tank is provided between the work table and the machine body frame.

According to this aspect, since the work table is provided at a position higher than the body frame, the vertical position of the fuel tank is less deviated from the fuel filler opening of the fuel tank, and the fuel filling operation is facilitated. The auxiliary fuel machine is provided between the work table and the machine body frame, that is, above and below the machine body frame and at a position overlapping the work table in a plan view. The auxiliary machine for fuel is, for example, an oil filter or the like for removing dust contained in the fuel.

Since the work table is located at a position overlapping the auxiliary fuel machine in a plan view, the work table comes into contact with the obstacle before the auxiliary fuel machine when the obstacle approaches the work table, and thus the work table functions as a protective member to easily avoid damage to the auxiliary fuel machine.

In the present invention, it is preferable that the balance weight mounting portion is formed at a position adjacent to a portion of the body frame in the left-right direction of the body with respect to the portion supporting the fuel tank.

In a type of combine harvester that accumulates grains by means of an accumulation hopper, the grain accumulation portion is lighter in weight than, for example, a tank type combine harvester that accumulates grains by means of a rectangular tank-shaped grain tank and discharges the grains by means of a screw conveyor-type grain discharge device.

If the tank-type combine and the body frame are assumed to be used in common, the weight balance of the body in the left-right direction tends to be unbalanced.

According to this aspect, since the balance weight mounting portion is formed at a position adjacent to the machine body of the fuel tank in the left-right direction, the imbalance in the weight balance as described above can be corrected and the weight balance can be improved by placing the balance weight thereon.

In the present invention, it is preferable that the threshing device for threshing the harvested straws is provided in a state of being arranged in the right and left direction of the machine body with the storage bucket, and the fuel tank is provided in a region below the storage bucket at a position close to the threshing device in the right and left direction of the machine body and at a position at the rear side of the machine body in the front and rear direction of the machine body.

According to this aspect, the fuel tank is located near the threshing device with respect to the storage bucket in the right-left direction of the body, that is, on the middle side in the arrangement direction of the threshing device and the storage bucket. The fuel tank is located on the rear side of the machine body with respect to the storage hopper in the front-rear direction of the machine body.

That is, the fuel tank is provided at a position closer to the center in the left-right direction of the machine body and located at the rear side of the machine body, and the fuel tank can be easily replenished from the rear side of the machine body without losing the weight balance in the left-right direction of the machine body.

In the present invention, it is preferable that a hopper support frame supporting the vertical direction of the storage hopper is provided in a state of being erected from a body frame, the hopper support frame includes a plurality of support columns located on the threshing device side and located on both the front and rear sides, and a wall member is provided in a state of being erected from the body frame over the support columns on the front side and the support columns on the rear side, and the wiring, the piping, or both are passed through a region between the threshing device or one of the fuel tanks and the wall member.

According to this aspect, the wall members are provided over the front and rear pillars of the hopper support frame on the threshing device side. A work area for collecting grains with storage bags or the like is formed below the storage hopper, and a plurality of storage bags are equipped in a standby state in the work area. Since the working area, the area through which the wiring or the piping or both (hereinafter, sometimes referred to as "wiring" or the like) pass are separated by the wall member, the storage bag or the like comes into contact with the wiring or the like, and damage to the wiring or the like can be prevented.

In the present invention, it is preferable that the wall member has an inclined surface portion in an inclined posture in which the wall member is positioned on the threshing device side as the wall member is positioned on the upper side as viewed in the front-rear direction of the machine body, and a vertical surface portion extending upward as being continuous with an upper side of the inclined surface portion, and the wiring or the piping or a space through which both of the wiring and the piping pass is formed in a region surrounded by the inclined surface portion and the machine body frame.

According to this aspect, the region surrounded by the inclined surface portion and the body frame is a substantially triangular space as viewed in the front-rear direction of the body, and the vertical surface portion continuous to the upper side of the inclined surface portion is positioned closer to the threshing device. That is, since the wire or the like passing region is located at the corner portion on the lower side of the threshing device side of the working region below the storage bucket and the longitudinal portion is located on the threshing device side, the working region below the storage bucket can be used as wide as possible, and the wire or the like can be stored satisfactorily.

In the present invention, it is preferable that a fuel auxiliary machine for acting on fuel stored in the fuel tank is provided on a rear side of the rear pillar and on a side opposite to the fuel tank in a left-right direction of the body with respect to the threshing device, and the line or the pipe or both of them are connected to the fuel auxiliary machine.

According to this aspect, the fuel stored in the fuel tank is supplied to the engine through the pipe.

In this case, the fuel auxiliary machine acts on the fuel, and performs processes such as removal of dust and separation of moisture, for example. The engine is provided on the front side of the engine body with respect to the fuel tank, and is supplied to the engine by a pipe passing through a region surrounded by the inclined surface portion and the engine body frame. When the auxiliary machine for fuel other than the pipe is electrically operated, the auxiliary machine for fuel is connected to an electric machine or the like on the front side of the machine body via a wire passing through a region surrounded by the inclined surface portion and the machine body frame.

As a means for solving the above-described [ second problem ], a harvester according to the present invention includes a threshing device which is provided in a state of being biased to one side in the left-right direction of a machine body and which performs threshing of harvested grain stalks, a storage hopper which is provided in a state of being biased to the other side in the left-right direction of the machine body and which is arranged in a state of being laterally arranged to the threshing device and which has a storage space for storing grain subjected to threshing and a discharge portion which is provided below the storage space and which is capable of discharging the grain, and a hopper support frame which supports the storage hopper, the hopper support frame includes a front vertical frame, a rear vertical frame, a front-rear direction frame, and a connection frame, the front vertical frame is provided upright from the machine body frame and supports a front portion of the storage hopper, the rear vertical frame is provided upright from the machine body frame and supports a rear portion of the storage hopper, the front-rear direction frame connects an upper portion of the front vertical frame and an upper portion of the rear vertical frame, and the coupling frame connects a front-rear middle portion of the front-rear direction frame and the threshing device.

According to the present invention, the front vertical frame and the rear vertical frame are included in the structure of the hopper support frame, and the front vertical frame and the rear vertical frame are coupled to each other in the front-rear direction. Therefore, the rigidity of the bucket support frame is improved in the front-rear direction of the frame. Further, when the front end portion of the hopper support frame is located on the front side of the front end portion of the threshing device and the rear end portion of the hopper support frame is located on the rear side of the rear end portion of the threshing device, the front-rear intermediate portion of the front-rear direction frame and the threshing device are also coupled by the coupling frame, whereby the hopper support frame can be coupled to the threshing device. Therefore, in the present invention, the storage hopper can be extended forward and backward to increase the amount of stored grains. As a result, the harvester is realized in which the degree of freedom of the arrangement of the storage hopper is improved with respect to the positional relationship between the storage hopper and the threshing device.

In the present invention, it is preferable that the bucket support frame includes a front lateral frame extending from an upper portion of the front vertical frame to a lateral outside of the machine body and supporting a front portion of the storage bucket, a rear lateral frame extending from an upper portion of the rear vertical frame to the lateral outside of the machine body and supporting a rear portion of the storage bucket, and the front-rear direction frame is disposed over a portion of the bucket support frame located on the threshing device side with respect to a front support portion of the front lateral frame supporting the storage bucket, and a portion of the bucket support frame located on the threshing device side with respect to a rear support portion of the rear lateral frame supporting the storage bucket.

According to this aspect, the front-rear direction frame is disposed closer to the threshing device than the front support section and the rear support section. That is, the front-rear direction frame is disposed on the opposite side of the storage bucket to the lateral outside of the machine body. Therefore, compared with a structure in which the front-rear direction frame is located on the lateral outer side of the machine body with respect to the storage bucket, the rigidity of the bucket support frame is not improved by an operator who works on the lateral outer side of the machine body with respect to the storage bucket.

In the present invention, it is preferable that the front lateral frame extends from an upper portion of the front vertical frame to the threshing device and is supported by the threshing device, the rear vertical frame is erected rearward of the threshing device, the rear lateral frame does not extend toward the threshing device, and the coupling frame couples a portion of the front and rear facing frames toward the rear and a portion of the threshing device toward the rear.

According to this aspect, the hopper support frame is firmly supported by the front-side lateral frame and the coupling frame to the threshing device. Further, since the rear-side lateral frame does not extend toward the threshing device side, and the connecting frame is connected to the portion near the rear portion of the threshing device, even when the rear end portion of the storage bucket is located more rearward than the rear end portion of the threshing device, the storage bucket is firmly supported by the threshing device via the bucket support frame, and the lateral vibration of the machine body of the storage bucket can be suppressed.

In the present invention, it is preferable that the front-rear direction frame connects a connecting portion of the front vertical frame and the front lateral frame and a connecting portion of the rear vertical frame and the rear lateral frame.

According to this aspect, since the front-rear direction frame is connected to the connecting portion at two locations, the front-rear direction frame can be provided substantially directly above the front vertical frame and substantially directly above the rear vertical frame, and the support structure of the front-rear direction frame is stabilized.

In the present invention, it is preferable that the upper end portion of the front vertical frame is connected to the lower surface portion of the front lateral frame, the upper end portion of the rear vertical frame is connected to the lower surface portion of the rear lateral frame, and the front-rear direction frame is a plate-like frame connecting the upper surface portion of the front lateral frame and the upper surface portion of the rear lateral frame.

According to this aspect, the front ends of the front lateral frame and the front-rear frame are connected to the front longitudinal frame, and the rear ends of the rear lateral frame and the front-rear frame are connected to the rear longitudinal frame. That is, the front lateral frame and the front-rear frame are supported from directly below by the front vertical frame, and the rear lateral frame and the front-rear frame are supported from directly below by the rear vertical frame. Therefore, the entire supporting structure of the hopper supporting frame becomes stable. Further, the front-rear direction frame is connected to the upper surface portion of the front-side lateral frame and the upper surface portion of the rear-side lateral frame, so that the front-rear direction frame is firmly supported on each of the front-side lateral frame and the rear-side lateral frame.

In the present invention, it is preferable that the coupling frame is a plate-shaped frame facing the front-rear direction frame.

According to this aspect, the connection frame and the front-rear facing frame are surface-connected to each other, and therefore the connection between the connection frame and the front-rear facing frame is made strong.

In the present invention, it is preferable that the front-side frame includes a front bracket cantilevered rearward from the upper surface portion of the front-side lateral frame, and a rear bracket cantilevered forward from the upper surface portion of the rear-side lateral frame, the front-rear frame is mounted and supported on the upper surface portion of the front bracket, the upper surface portion of the coupling frame, and the upper surface portion of the rear bracket, and a bent portion bent downward is provided at an end portion of the front-rear frame on a side opposite to the threshing device so as to extend forward and rearward of the front-rear frame.

According to this aspect, the front-rear direction frame and the front-side lateral frame are surface-coupled to each other via the front-side bracket, and the front-rear direction frame and the rear-side lateral frame are surface-coupled to each other via the rear-side bracket. Therefore, the front-rear direction frame and the front-side lateral frame are firmly connected, and the front-rear direction frame and the rear-side lateral frame are firmly connected. Further, since the front-rear frame is placed on and supported by the upper surface portions of the front bracket, the rear bracket, and the coupling frame, the upper surfaces of the front-rear frame can be formed in a flush manner. Thus, even if dust falls on the upper surface of the front-rear direction frame, the dust is easily blown off by wind or the like, and the dust is less likely to be accumulated on the upper surface of the front-rear direction frame. Further, the rigidity of the front-rear direction frame is improved by the bent portion.

In the present invention, it is preferable that the vehicle further includes an engine provided on a front side of the storage bucket and an exhaust pipe for discharging exhaust gas of the engine, the front side lateral frame extends from an upper portion of the front portion vertical frame to the threshing device and is supported by the threshing device, and the exhaust pipe passes through between the threshing device and the storage bucket in a state of passing under a protruding portion of the front side lateral frame protruding from the front portion vertical frame to the threshing device side and being supported by the protruding portion.

According to this aspect, the exhaust pipe is supported by the protruding portion. The protruding portion is supported by the threshing device and both ends of the front vertical frame, so that the support structure of the exhaust pipe is strong. Further, since the hopper support frame also serves as a support structure for the exhaust pipe, the number of parts of the harvester is reduced as compared with a structure in which a support structure for the exhaust pipe is separately provided.

In the present invention, it is preferable that the threshing device further includes a hood that is provided on a side opposite to the threshing device with respect to the exhaust pipe in a lateral direction of the machine body and that covers the exhaust pipe from a lateral outside of the machine body, and the hood is supported by a front portion of the front-rear direction frame.

According to this aspect, the radiant heat radiated from the exhaust pipe is blocked by the cover. Therefore, an operator who works on the lateral outside of the machine body with respect to the storage hopper is less likely to feel hot air emitted from the exhaust pipe, and the workability of the operator is improved.

In the present invention, it is preferable that an illumination device for illuminating a working space below the storage bin is supported by a rear portion of the front-rear direction frame in a state of being positioned between the threshing device and the storage bin.

According to the scheme, the lighting device is positioned between the threshing device and the storage hopper, so that the lighting device can illuminate the operation space without interfering with the storage hopper. Further, according to this aspect, since the illumination device is disposed in the vicinity of the corner portion of the rear portion of the storage bucket, the illumination device can illuminate a wide range of the working space even when the illumination range of the illumination device is narrow. Further, since the illumination device is supported by the front-rear direction frame, the support structure of the illumination device is simplified as compared with a structure in which the support structure of the illumination device is separately provided.

In the present invention, it is preferable that the storage device further includes a second front vertical frame which is erected from the body frame on the outer side in the lateral direction of the body than the front vertical frame and supports the front portion of the storage bucket, a second rear vertical frame which is erected from the body frame on the outer side in the lateral direction of the body than the rear vertical frame and supports the rear portion of the storage bucket, and a work clamp plate which is provided on the outer side in the lateral direction of the body than the second front vertical frame and the second rear vertical frame and is capable of changing a swing posture to a use state in which the work clamp plate is projected outward in the lateral direction of the body and a storage state in which the work clamp plate is stored inward in the lateral direction of the body, the second rear vertical frame being provided on the inner side in the lateral direction of the body than the second front vertical frame, and the work clamp plate which is projected from a position corresponding to the second front vertical frame to a position rearward of a position corresponding to the second rear vertical frame in the longitudinal direction of the body are provided .

According to this aspect, the rear end portion of the work clamp extends from the position corresponding to the second rear vertical frame to the position on the rear side, so that the underfoot space in the front-rear direction of the machine body of the work clamp is secured to be wide. In this state, the second rear vertical frame is provided further to the inside in the lateral direction of the machine body than the second front vertical frame, and thus the space under the feet of the operator working further to the outside in the lateral direction of the machine body than the storage hopper is secured widely. This improves the workability and working environment of the worker.

In the present invention, it is preferable that a fuel tank is provided between the threshing device and the storage bucket, the machine body frame is provided with a frame portion that supports the rear vertical frame and protrudes from the threshing device toward the machine body rear side, the fuel tank is supported by the frame portion in a state of protruding from the rear vertical frame toward the machine body rear side and in a state of not protruding from the rear end portion of the frame portion toward the machine body rear side, and the operation panel is supported by the frame portion.

According to this aspect, the space between the threshing device and the storage bin and the space of the frame portion are not used, and the capacity of the fuel tank can be increased as much as possible without affecting the arrangement of the threshing device and the storage bin. Further, the fuel tank does not protrude from the rear end of the frame portion toward the rear side of the machine body, so that the fuel tank is protected by the frame portion so as not to contact other objects when the harvester is traveling. Further, the frame portion also serves as an indication structure for the operation cleat, and the indication structure for the operation cleat is simplified.

In the present invention, it is preferable that a fuel tank is provided between the threshing device and the storage bin in a state of protruding from the rear vertical frame toward the rear side of the machine body, a spacer for separating impurities in the fuel is provided in front of the fuel tank, a partition plate is provided on the opposite side of the fuel tank and the spacer from the threshing device side, a working space below the storage bin and a space between the threshing device and the storage bin are partitioned, and an opening portion is formed in a portion of the partition plate adjacent to the spacer in the transverse direction of the machine body.

According to this aspect, since the spacer is provided further toward the inside of the body than the fuel tank, the spacer is less likely to come into contact with another object than a structure in which the spacer is provided further toward the rear than the storage hopper and is arranged in the lateral direction of the fuel tank. Further, since the partition and the working space are partitioned by the partition plate, for example, the possibility that an operator mistakenly kicks the partition with a foot or the possibility that a tool placed in the working space inadvertently comes into contact with the partition can be greatly reduced. Further, the opening is formed in the partition plate, so that the operator can easily check the state of the spacer from the working space.

As a means for solving the above-described [ third problem ], a harvester according to the present invention includes a storage bucket having a storage space for storing grains subjected to threshing and a discharge portion provided below the storage space and capable of discharging the grains, a bucket support frame erected on a machine frame for supporting the storage bucket, a guide portion supported on the bucket support frame so as to be vertically swingable between a use state and a storage state, the guide portion being capable of protruding from the storage bucket to the outside in the lateral direction of the machine frame to receive the body of the operator in the use state and retracting to the inside in the lateral direction of the machine frame in the storage state, a cushioning member attached to the guide portion so as to wrap the guide portion, a backrest portion, a side arm portion, a cushioning member attached to the guide portion, and a bag portion attached to the guide portion, And a second arm portion which is positioned on a back side facing an operator of the storage bucket in the use state and is linear, wherein the first arm portion extends from one end portion of the backrest portion in the extending direction to one end portion of the bucket support frame and is swingably supported by the one end portion, the second arm portion extends from the other end portion of the backrest portion in the extending direction to the other end portion of the bucket support frame and is swingably supported by the other end portion, the cushion member is attached to the backrest portion, the guide portion is configured by connecting a plurality of divided bodies, and a division boundary of the plurality of divided bodies is positioned on the backrest portion.

According to the present invention, both ends of the backrest portion positioned on the back side of the operator facing the storage bucket are supported by the one arm portion and the other arm portion. The one-side arm portion and the other-side arm portion are swingably supported on each of one end portion and the other end portion of the hopper support frame. Therefore, the backrest portion capable of receiving the body of the operator in as wide a range as possible is partially formed over the one end side portion and the other end side portion of the bucket support frame. Further, since the boundary of the guide portion is located on the backrest portion, the cushion member can be easily attached to the backrest portion when the guide portion is assembled, even if the cushion member is formed cylindrically. This facilitates assembly of the guide portion and the cushioning member, and improves workability of the bagging work and working environment.

In the present invention, it is preferable that one of the one arm portion and the other arm portion and the backrest portion are formed as an integrated L-shaped member, and the other of the one arm portion and the other arm portion and the L-shaped member are provided as the plurality of divided bodies, and the other of the one arm portion and the other arm portion and the L-shaped member are connected by inserting a free end portion of the backrest portion into a free end portion of the other of the one arm portion and the other arm portion to be held in position.

According to this aspect, the plurality of divided bodies are connected by inserting the backrest portion only into the free end portion of the one arm portion or the other arm portion, and therefore, the assembly of the guide portion is easy. In this configuration, the dividing boundaries of the plurality of divided bodies are located at the insertion positions of the backrest portion with respect to the free end portions, so that the strength of the backrest portion can be ensured without dividing the backrest portion.

In the present invention, it is preferable that the guide portion is configured such that the backrest portion extends in the front-rear direction on the outer side in the lateral direction of the machine body of the storage bucket in the use state, the one arm portion is located on the front side of the other arm portion, and the L-shaped member is configured by the other arm portion and the backrest portion.

According to this aspect, the other arm portion is located more rearward than the one arm portion, and the other arm portion and the backrest portion are integrally formed as an L-shaped member. In this configuration, even when the other arm is located at a position of the rear portion of the body where vibration is likely to occur, the connection between the other arm and the backrest portion is not loosened. Therefore, the strength of the L-shaped member can be securely ensured.

In the present invention, it is preferable that the plurality of divided bodies include a first L-shaped member including a first side portion positioned on the side of the first side arm of the backrest portion and the first side arm, and a second L-shaped member including a second side portion positioned on the side of the second side arm of the backrest portion and the second side arm, and the first L-shaped member and the second L-shaped member are connected to each other by being held in a state where a free end of the first side portion and a free end of the second side portion are opposed to each other.

According to this aspect, the guide portion is formed of two L-shaped members. Therefore, the rigidity of the bent portion between the one arm portion and the backrest portion and the rigidity of the bent portion between the other arm portion and the backrest portion are enhanced. Therefore, the number of divided bodies is reduced, and the guide portion that firmly secures the strength of the bent portion is realized.

In the present invention, it is preferable that the plurality of divided bodies include the backrest portion, the one-side arm portion, and the other-side arm portion, the one-side arm portion and the backrest portion are connected by holding the end portion of the backrest portion on the one-side arm portion side in a state of being inserted into the free end portion of the one-side arm portion, and the other-side arm portion and the backrest portion are connected by holding the end portion of the backrest portion on the other-side arm portion side in a state of being inserted into the free end portion of the other-side arm portion.

According to this aspect, since the backrest portion is configured to be inserted into the free end portions of the one arm portion and the other arm portion, a bent member such as an L-shaped member is not required. Therefore, the guide portion can be configured to be simple by the rod-shaped member with less processing.

In the present invention, it is preferable that the use state and the storage state are set at positions on both sides of a position directly above a swing fulcrum of the guide portion.

According to this aspect, when the guide portion is switched to the use state or the storage state, the guide portion needs to be swung so as to go over a position directly above the swing fulcrum. Therefore, the guide portion can be held in the use state or the storage state by its own weight, and the possibility of the guide portion being inadvertently switched to the use state or the storage state can be reduced.

In the present invention, it is preferable that the guide portion is configured such that the backrest portion approaches the storage bucket in the storage state, and a holding mechanism is provided in the storage bucket to hold a position of the backrest portion in the storage state.

According to this aspect, the storage bucket is used for supporting the holding mechanism, and therefore the indication structure of the holding mechanism is simplified.

In the present invention, it is preferable that the holding mechanism includes an accommodating portion that can accommodate a part of the backrest portion, and a resilient portion that acts a biasing force that urges the backrest portion accommodated in the accommodating portion toward the use state side, the accommodating portion includes an inlet portion that is set smaller than a cross-sectional shape of the backrest portion and is elastically deformed so as to be widened by passage of the backrest portion, thereby allowing the backrest portion to move in and out of the accommodating portion, and the resilient portion is configured to maintain a state in which the backrest portion is accommodated in the accommodating portion and to be pressed toward the inlet portion by the biasing force.

According to this aspect, the seat back portion is held in the guide portion by the position of the seat back portion held in the guide portion. Further, since the backrest portion located inside the housing portion is pressed toward the inlet portion by the rebounding portion, the backrest portion does not become loose inside the housing portion, and the guide portion is appropriately held at the position in the housed state.

In the present invention, it is preferable that the holding mechanism is configured to be able to hold a position of an end portion side portion of the backrest portion located on one side in the extending direction, and includes a lock device capable of fixedly coupling the one arm portion and the other arm portion located on the other side in the extending direction to the bucket support frame.

According to this aspect, the guide portion is held in the position of the accommodated state not only by the holding mechanism but also by the lock device. Therefore, the possibility that the backrest portion in the state of being accommodated in the accommodating portion is separated from the accommodating portion to the outside by vibration or the like is reduced, and the guide portion is firmly held at the position in the accommodated state.

In the present invention, it is preferable that the storage bucket includes a working clamp plate at a position located outside the machine body from the storage bucket, and in the use state, the guide portion is inclined downward and the backrest portion projects laterally outward from an outer end of the working clamp plate toward the machine body.

According to this aspect, the working space on the working splint, particularly the space of the upper body of the worker, is secured widely without interfering with the backrest portion. Further, according to this aspect, the operator can grasp the one arm portion or the other arm portion located higher than the backrest portion with his or her hand, and the working posture of the operator who works on the working bridge is stabilized.

Drawings

Fig. 1 is an overall side view of a combine harvester of a first embodiment.

Fig. 2 is an overall plan view of the combine harvester of the first embodiment.

Fig. 3 is a side view of the storage unit according to the first embodiment.

Fig. 4 is a front view of the storage unit according to the first embodiment.

Fig. 5 is a plan view of the fuel tank installation section of the first embodiment.

Fig. 6 is a rear view of the fuel tank installation section of the first embodiment.

Fig. 7 is an overall side view of the combine harvester of the second embodiment.

Fig. 8 is an overall plan view of the combine harvester of the second embodiment.

Fig. 9 is a right side view of the grain storage unit according to the second embodiment.

Fig. 10 is a rear view of the body showing the grain storage part and the periphery thereof in the second embodiment.

Fig. 11 is a perspective view showing a bucket support frame in the second embodiment.

Fig. 12 is a plan view showing a relationship between the hopper support frame and the periphery in the second embodiment.

Fig. 13 is a left side view of the body showing the front-rear direction frame and the connection frame in the second embodiment.

Fig. 14 is a rear sectional view showing a coupling structure of the threshing device to the front-rear direction frame in the second embodiment.

Fig. 15 is a rear view of the housing showing the holding mechanism in the second embodiment.

Fig. 16 is a plan view showing a holding mechanism in the second embodiment.

Fig. 17 is a plan view showing a grain guide structure (throwing guide plate) of the grain storage bin in the second embodiment.

Fig. 18 is a right side view of the body of the second embodiment showing a grain guide structure (throwing guide plate) of the grain storage bin.

Fig. 19 is a plan view showing a structure (a flow-down guide plate) for guiding grains in the storage bin according to the second embodiment.

Fig. 20 is a right side view of the machine body showing a grain guide structure (a flow-down guide plate) of the grain storage hopper in the second embodiment.

Fig. 21 is a view showing another embodiment of the guide portion in the second embodiment.

Fig. 22 is a view showing another embodiment of the guide portion in the second embodiment.

Fig. 23 is a view showing another embodiment of the guide portion in the second embodiment.

Fig. 24 is a view showing another embodiment of the guide portion in the second embodiment.

Fig. 25 is a diagram showing another embodiment of the holding mechanism in the second embodiment.

Fig. 26 is a rear view showing another embodiment of the hopper support frame in the second embodiment.

Fig. 27 is a front view showing another embodiment of the bucket support frame in the second embodiment.

Detailed Description

[ first embodiment ]

A first embodiment in which a mechanism for supporting the above-described [ first problem ] is applied to a general-type combine harvester as an example of a combine harvester will be described below with reference to fig. 1 to 6.

[ integral Structure ]

As shown in fig. 1 and 2, a general-type combine harvester includes a steering unit 3 on the front right side of a traveling machine body 2 including a pair of left and right crawler traveling devices 1, a threshing device 4 for threshing harvested crops, and a grain storage unit 5 for storing grains obtained by the threshing process. The grain storage unit 5 is provided behind the cab 3, and the grain storage unit 5 and the threshing device 4 are arranged in the lateral width direction of the machine body in a state where the grain storage unit 5 is located on the right side of the machine body and the threshing device 4 is located on the left side of the machine body. Further, an engine 6 is provided below the cab 3, and power of the engine 6 is transmitted to each part of the combine harvester.

In this embodiment, when the front-rear direction of the body is defined, the direction is defined along the body in the working state, and when the left-right direction of the body is defined, the left-right direction is defined in a state viewed in the body direction. That is, the direction indicated by reference numeral (F) in fig. 1 and 2 is the front side of the body, and the direction indicated by reference numeral (B) in fig. 1 and 2 is the rear side of the body. The direction indicated by reference numeral (L) in fig. 2 is the left side of the body, and the direction indicated by reference numeral (R) in fig. 2 is the right side of the body. The same applies to the second embodiment described later.

A feeder 7 for carrying the harvested grain stalks is connected to the front part of the threshing device 4 so as to be vertically swingable around the horizontal axis, and a harvesting part 8 having a harvesting width substantially corresponding to the horizontal width of the machine body is connected to the tip of the feeder 7. The harvesting unit 8 includes a rotary drum 9 for raking the planted straw rearward, a pusher-type harvesting device 10 for cutting the root of the planted straw to harvest, a traverse screw pusher 11 for feeding and transferring the harvested straw to the middle side of the machine body in the transverse width direction, and the like, and supplies the straw harvested by the harvesting device 10 to the feeder 7 by feeding the straw laterally by the traverse screw pusher 11.

The driver part 3 includes a driver seat 12, a front panel 14 positioned in front of the driver seat 12 and provided with a plurality of operation elements such as a steering operation lever 13, a side panel 17 positioned on the left lateral side of the driver seat 12 and provided with various operation elements such as a shift lever 15 and a kick-off clutch lever 16, and the like. On the right lateral side of the driver seat 12, a dust-proof duct 18 for sucking cooling air to the engine 6 by an unillustrated radiator fan is provided. The cab 3 includes a cab roof 19 having functions of preventing sunlight from being irradiated to a driver seated in the cab 3, preventing rain, and the like.

The right and left sides of the threshing device 4 are covered with side walls 4A, and the upper part of the threshing device 4 is covered with a ceiling 4B. Further, although not shown, a threshing cylinder (boom) and a concave screen (fed-implement) (not shown) are provided on the upper side of the internal space surrounded by the left and right side walls 4A and the top plate 4B, and a threshing chamber for threshing the harvested straw conveyed from the feeder 7 is formed. The threshing chamber is provided at the lower part thereof with a sorting unit for sorting the threshed product, which has been sifted from the concave plate, into grains, grains with branches, and the like, and waste grass clippings, and the like.

The grains sorted by the sorting processing section are discharged to the outside of the grain storage section 5 side of the threshing device 4 by an unillustrated first-class material collecting screw. The threshing device 4 is provided with a winnowing device 20 formed of a screw conveyor on the lateral outer side of the side wall 4A on the side of the grain storage part 5. The grains discharged to the lateral outside of the grain storage part 5 side of the threshing device 4 are transported upward by the winnowing device 20 and stored in the grain storage part 5.

The second-class product obtained by the sorting processing unit is discharged to the outside of the lateral side of the grain storage unit 5 side of the threshing device 4 by a second-class product collecting screw (not shown), and is returned to the front side of the threshing device 4 by a second-class product returning device 23 provided on the lateral side of the grain storage unit 5 side of the threshing device 4. The waste grass clippings and the like are discharged to the outside through the discharge case 4C on the rear side of the body of the threshing device 4.

[ grain depository ]

The grain storage unit 5 will be explained. As shown in fig. 1, the grain storage unit 5 includes a storage hopper 25, a collection unit 26, and a hopper support frame 27, the storage hopper 25 has a storage space for storing grains subjected to threshing, and a discharge port 24 as a discharge unit capable of discharging grains to a lower side of the storage space, the collection unit 26 collects grains discharged from the storage hopper 25, and the hopper support frame 27 supports the storage hopper 25.

As shown in fig. 3 and 4, the storage hopper 25 includes a rectangular box-shaped portion 25A having a substantially bottomless box shape that forms a substantially rectangular parallelepiped space on the upper side, and a flow-down guide portion 25B having three funnel portions 28 each having a narrow lower portion on the lower side. The lower end opening of the rectangular box-shaped portion 25A is connected to the upper end opening of the downflow guide portion 25B, and a space is formed in a state where the inside of the rectangular box-shaped portion 25A is connected to the inside of the downflow guide portion 25B. That is, the entire inner space of the rectangular box-shaped portion 25A and the inner space of the downflow guide portion 25B forms a storage space for storing grains. A discharge port 24 capable of discharging grains downward is formed at the lower end of the three funnel parts 28, and a manually operated shutter mechanism 29 is provided to open and close the discharge port 24.

The recovery unit 26 includes a bag holding unit 30 for holding a grain storage bag F for storing grains discharged from the discharge port 24 of the storage hopper 25 in a vertical posture. The bag holding portion 30 is provided with a plurality of support rods 30a extending in a cantilever shape in a left-right direction so as to be locked to the upper portion of the grain-containing bag F to hold the vertical posture. A mounting table 31 for receiving and supporting the grain-containing bag F containing grains is provided at a lower portion of the collecting unit 26.

A work step portion 32 on which an assistant operator for performing a grain collection work can ride is provided on the right side of the platform 31. The working step portion 32 is supported by the body frame 33 so as to be swingable about a forward and backward swing axis of an inner (left) end portion of the body, and is configured to be switchable between a working posture in which it extends outward in the lateral direction of the body and an accommodating posture in which it retracts inward in the body. The storage bin 25 is provided with an auxiliary canopy 34 on the upper side thereof, and the auxiliary canopy 34 covers the upper side of an auxiliary operator who works in the work area, and has functions of preventing sunlight, rain, and the like.

The bucket support frame 27 includes a plurality of support columns 35 erected from the machine body frame 33 at left-right intervals at positions corresponding to front and rear both side end portions of the storage bucket 25, and left-right oriented lateral frames 36 connected to each other across upper end portions of the plurality of support columns 35.

As shown in fig. 4, three support columns 35 are provided on the front side of the body at intervals in the lateral direction, and two support columns 35 are provided on the rear side of the body at intervals in the lateral direction. The lower ends of all the support columns 35 are connected and fixed to the body frame 33. In addition, lateral frames 36 facing left and right are connected to upper end portions of the plurality of support columns 35 arranged in the left-right direction at the front and rear both side portions. The left side of the machine body of each of the front and rear lateral frames 36, that is, the end on the threshing device 4 side is bolted to the side wall 4A of the threshing device 4.

The support members 37 provided at the front and rear end portions of the flow-down guide portion 25B of the storage hopper 25 are placed and supported by the receiving members 38 attached to the front and rear lateral frames 36, and the support members 37 and the receiving members 38 are connected by bolts. Thus, the storage bucket 25 is supported by the bucket support frame 27. In fig. 3 and 4, reference numeral 39 denotes a worker protecting member for supporting a worker for assisting the bagging work from the rear side. Reference numeral 40 denotes an armrest which assists the operator in grasping the armrest.

[ Fuel tank ]

Next, the fuel tank 41 will be explained. The fuel tank 41 is provided in a region below the storage hopper 25 in a state of overlapping with the storage hopper 25 in a plan view. The fuel tank 41 is provided in a region below the storage hopper 25 at a position close to the threshing device 4 in the left-right direction of the machine body and at a position on the rear side of the machine body in the front-rear direction of the machine body.

That is, as shown in fig. 5 and 6, the storage bucket 25 is provided at a position which is at the center in the left-right direction of the machine body between the storage bucket 25 and the threshing device 4 and which is at the rear side of the machine body, so as to protrude rearward from the rear end of the storage bucket 25. The fuel tank 41 is configured as a rectangular box-like body having a rectangular shape with a large width in the front-rear direction and a small width in the left-right direction in plan view, as shown in fig. 5, and is configured as a rectangular box-like body having a small width in the left-right direction and a large width in the up-down direction in front-rear direction of the machine body, as shown in fig. 6. That is, the fuel tank has a small width in the left-right direction, a large width in the front-rear direction and the up-down direction, and a compact shape in the left-right direction, and can be disposed in a narrow area between the threshing device 4 and the grain storage unit 5, and a large fuel storage capacity can be secured.

A fuel supply port 42 that opens obliquely upward and rearward is formed at the rear end portion of the upper surface of the fuel tank 41. The refueling port 42 is opened upward from the rear end of the machine body, so that the refueling operation can be easily performed from the outside of the rear of the machine body.

The fuel tank 41 is held in position by a pair of front and rear belts 43. The belt 43 is provided in a state of being wound around the fuel tank 41 from above, and both right and left end portions are fixed to the body frame 33.

As shown in fig. 5, a counterweight attachment portion 44 is formed at a position adjacent to the right side in the left-right direction of the machine body with respect to the portion of the machine body frame 33 where the fuel tank 41 is supported. A balance weight 45 is attached to the balance weight attachment portion 44.

As described above, the body frame 33 is configured to serve also as a combine: instead of the hopper-shaped grain storage unit 5, a can-type grain storage unit provided with a grain tank (not shown) and a screw conveyor-type grain discharge device (not shown) is used. The grain storage part 5 in the form of a hopper is lighter in weight than the grain storage part in the form of a tank, and therefore a balance weight 45 is installed to balance the left and right weight well.

As shown in fig. 4, the counterweight mounting portion 44 includes a pair of left and right front-rear direction arm portions 44a fixedly extended rearward from the lateral frame body 33A of the machine body frame 33 located on the rear side of the machine body, and a lateral extension portion 44b extending across the left and right front-rear direction arm portions 44 a. The laterally extending portions 44b are provided in a pair at the front and rear, and a balance weight 45 is attached to the right side of the laterally extending portion 44b on the rear side.

The fuel tank 41 is mounted and supported on the left side portion of the lateral frame 33A, the left front-rear direction arm 44a, and the front-rear lateral extension portion 44 b.

As shown in fig. 5, the fuel assist device that acts on the fuel stored in the fuel tank 41 is provided with an oil filter 46 that removes fine dust contained in the fuel and a water separator 47 that separates and removes water contained in the fuel, on the rear side of the rear pillar 35 and on the opposite side (right side) in the left-right direction of the machine body from the fuel tank 41.

A pump 48 that sends fuel to the engine 6 is provided on the front side of the fuel tank 41. The fuel in the fuel tank 41 passes through the oil filter 46 and the water spacer 47, and is supplied to the engine 6 at the front of the engine body by the pump 48 through the pipe H extending long in the front-rear direction. The return oil (remaining amount) from the engine 6 is returned to the fuel tank 41 through the pipe H.

A fuel remaining amount detection sensor (not shown) for measuring the remaining amount of fuel is provided inside the fuel tank 41. The detection information of the remaining fuel amount detection sensor is transmitted to a control device (not shown) in the front of the body through a wiring (not shown). The pump 48 is configured to operate in response to a command from the control device through a wiring not shown.

As shown in fig. 3, 5, and 6, a work table 49 is provided on the rear side of the storage bucket 25 and on the left side (the other side in the left-right direction of the machine body). The work table 49 is supported by the bucket support frame 27 in a state of protruding rearward from the rear end portion of the bucket support frame 27. The table 49 is formed by bending a circular pipe into a substantially U-shape, and is integrally connected and supported by welding to each of the two support columns 35 located on the rear side. The left end of the table 49 is coupled to the left one 35 of the two supports 35, and the lateral extension portion 50 extends in the left-right direction from the right end of the table 49 and is coupled to the right one 35 of the two supports 35. As shown in fig. 6, when refueling the fuel tank 41, the refueling operation is performed in a state where a weight burden is not applied to the fuel container T (for example, a polyethylene tank) placed on the work table 49.

As shown in fig. 3 and 6, the work table 49 is provided in a state of being separated upward from the body frame 33. Further, an oil filter 46 and a water spacer 47 are provided between the work table 49 and the machine frame 33. The oil filter 46 and the water spacer 47 are located below the work table 49 in a state of being overlapped in a plan view.

As shown in fig. 3, 4, and 6, the wall member 51 is provided in a state in which the front pillar 35 and the rear pillar 35 are extended from the body frame 33, among the plurality of pillars 35 of the bucket support frame 27, the pillars 35 located on both the front and rear sides of the threshing device 4. As shown in fig. 4 and 6, the wall member 51 has an inclined surface portion 51A in an inclined posture in which the wall member is positioned on the threshing device 4 side as the upper side in the front-rear direction of the machine body, and a vertical surface portion 51B extending upward in connection with the upper side of the inclined surface portion 51A, and extends over substantially the entire width of the storage bucket 25 in the front-rear direction.

The vertical surface 51B of the wall member 51 is fastened and fixed by bolts to brackets 52 provided on the front and rear pillars 35 at both front and rear sides. The inclined surface portion 51A of the wall member 51 is fixed to the body frame 33 by bolt fastening in a state of being fastened to the mounting table 31 at three positions of the front and rear side portions and the front and rear center portion.

As shown in fig. 4 and 6, in the region surrounded by the inclined surface portion 51A of the wall member 51 and the housing frame 33, a pipe H through which the fuel passes as described above, and a space Q through which wiring connecting the remaining fuel amount detection sensor (not shown), the pump 48, and the control device passes are formed. The space Q is spaced apart from the wall member 51 with respect to the work area where the operator performs the grain collecting work by providing the grain storage bag F, and therefore, the grain storage bag F and the like can be prevented from contacting and damaging the pipes H and the wiring.

[ Another embodiment of the first embodiment ]

The present invention is not limited to the structure illustrated in the first embodiment, and another representative embodiment of the present invention will be illustrated below.

(1-1) in the first embodiment, the fuel tank 41 is configured to protrude rearward from the rear end portion of the storage hopper 25, but the fuel tank 41 may be provided so as not to protrude rearward from the rear end portion of the storage hopper 25.

(1-2) in the first embodiment, the fuel tank 41 is provided in a state where a region of a part of the fuel tank 41 overlaps the storage hopper 25 in a plan view, but instead of this configuration, the fuel tank 41 may be further provided below the storage hopper 25 in a state where substantially all of the region or all of the region of the fuel tank 41 overlaps the storage hopper 25 in a plan view.

(1-3) in the first embodiment, the work table 49 is supported by the hopper support frame 27, but instead of this configuration, the work table 49 may be supported by a dedicated support frame.

(1-4) in the first embodiment, the oil filter 46 and the water separator 47 as the fuel auxiliary machine are provided between the work table 49 and the machine body frame 33, but instead of this configuration, the work table 49 may be provided in a state of being displaced from the fuel auxiliary machine in a plan view. The work table 49 may not be provided. The fuel filter 46 and the water separator 47 are not limited to the fuel auxiliary machine, and other devices such as a pump may be provided.

(1-5) in the first embodiment, the counterweight attachment portion 44 is formed in the machine body frame 33, but the counterweight attachment portion 44 may not be provided.

(1-6) in the first embodiment, both of the pipe H through which the fuel passes and the wiring connecting the remaining fuel amount detection sensor (not shown), the pump 48, and the control device are configured to pass through the space Q formed in the region surrounded by the inclined surface portion 51A of the wall member 51 and the housing frame 33, but instead of this configuration, only one of the pipe H and the wiring may pass through the pipe H. Instead of the wall member having the inclined surface portion 51A and the vertical surface portion 51B, the wall member 51 may have a vertical surface portion that is flat over the entire width in the vertical direction.

(1-7) in the first embodiment, a general-type combine is exemplified as the combine, but the present invention can be applied to a self-threshing (self-threshing) combine instead of the general-type combine.

[ second embodiment ]

A second embodiment in which a mechanism for solving the above-described [ second problem ] and [ third problem ] is applied to a general-type combine harvester as an example of a harvester will be described below with reference to fig. 7 to 27.

[ basic Structure of combine harvester ]

As shown in fig. 7 and 8, a general-type combine harvester includes a steering unit 3 on the front right side of a traveling machine body 2 including a pair of left and right crawler traveling devices 1, a threshing device 104 for threshing harvested crops, and a grain storage unit 105 for storing grains obtained by the threshing process. The grain storage 105 is provided behind the cab 3, and the grain storage 105 and the threshing device 104 are arranged in the lateral width direction of the machine body in a state where the grain storage 105 is located on the right side of the machine body and the threshing device 104 is located on the left side of the machine body. Further, an engine 6 is provided below the operator's section 3, and power of the engine 6 is transmitted to each section of the combine harvester. The configuration of the driver unit 3 is the same as that of the first embodiment, and therefore, a detailed description of the driver unit 3 is omitted.

A feeder 7 for carrying the harvested grain stalks is connected to the front part of the threshing device 104 so as to be vertically swingable around the horizontal axis, and a harvesting part 8 having a harvesting width corresponding to the approximate width of the machine body is connected to the tip of the feeder 7. The configuration of the harvesting portion 8 is the same as that of the first embodiment described above, and therefore, a detailed description of the harvesting portion 8 is omitted.

The right and left sides of the threshing device 104 are covered with side walls, and the upper part of the threshing device 104 is covered with a ceiling 4B. Further, although not shown, a threshing cylinder (boom body) and a concave screen (not shown) are provided on the upper side of the internal space surrounded by the left and right side walls and the ceiling 104B, and a threshing chamber is formed for performing threshing processing of the harvested straw conveyed from the feeder 7. The threshing chamber is provided at the lower part thereof with a sorting unit for sorting the threshed product, which has been sifted from the concave plate, into grains, grains with branches, and the like, and waste grass clippings, and the like.

The threshing device 104 is provided with a winnowing device 120 formed by a screw conveyor on the lateral outer side of the right side wall 104A on the grain storage part 105 side. The grains sorted by the sorting processing section are discharged to the outside of the grain storage section 105 side of the threshing device 104 by an unillustrated first-class material collecting screw. Then, the grains are conveyed upward by the winnowing device 120 and stored in the grain storage unit 105.

The second-class product obtained by the sorting unit is discharged to the outside of the grain storage unit 105 side of the threshing device 104 by a second-class product collecting screw (not shown). As shown in fig. 7 and 9, the second crop is returned to the front side of the threshing device 104 by the second crop returning device 123 provided on the lateral side of the grain storage unit 105 side of the threshing device 104. The waste grass clippings and the like are discharged to the outside through the discharge case 104C on the rear side of the body of the threshing device 104.

The grain storage 105 includes a storage bin 140, a collection space 142, and a bin support frame 143, the storage bin 140 includes a storage space for storing the grains subjected to the threshing process, and a discharge port 141 as a discharge portion capable of discharging the grains from the storage space to a lower side, the collection space 142 collects the grains discharged from the storage bin 140, and the bin support frame 143 supports the storage bin 140.

As shown in fig. 9 to 12, the bucket support frame 143 includes a plurality of support columns 144 erected from the machine body frame 130, and a front lateral frame 145A and a rear lateral frame 145B, which are lateral frames extending in the left-right direction and connected to each other across the upper end portions of the plurality of support columns 144, at positions corresponding to the front and rear end portions of the storage bucket 140.

Of the plurality of pillars 144, the pillar 144 located on the front side of the body and located on the inner side in the lateral direction of the body is a front vertical frame 144A, and the pillar 144 located on the front side of the body and located on the outer side in the lateral direction of the body is a second front vertical frame 144B. Among the plurality of support columns 144, the support column 144 located on the rear side of the machine body and on the inner side in the transverse direction of the machine body is a rear vertical frame 144C, and the support column 144 located on the rear side of the machine body and on the outer side in the transverse direction of the machine body is a second rear vertical frame 144D. The details of the storage bucket 140 and the bucket support frame 143 will be described later.

As shown in fig. 12, the upper portion of the grain-raising device 120 is connected and fixed to the right sidewall 104A of the threshing device 104 by a pair of front and rear connecting stays 121 each formed of a substantially L-shaped plate in plan view. One end of each of the pair of connecting stays 121 is connected to an outer peripheral portion of the grain-raising device 120 by welding, and the other end is connected to a bracket 122 fixed to the right sidewall 104A of the threshing device 104 by a bolt.

The exhaust gas after combustion discharged from the engine 6 passes through a muffler 124 located on the upper left side of the engine 6, flows through the pipe of an exhaust pipe 125, and is discharged to the outside from an exhaust port 126 which is an outlet at the rear of the engine body. The exhaust funnel 124a of the muffler 124 is provided so as to discharge exhaust gas in an obliquely upward posture from the rear of the muffler 124 to the rear side. The front pipe 125a of the exhaust pipe 125 is inclined rearward, and extends to the rear of the machine body through a space between the threshing device 104 and the grain storage 105 in a state where an exhaust port 126 serving as an outlet for discharging exhaust gas to the outside is located higher than an exhaust gas inlet 127 serving as an inlet for supplying exhaust gas from the engine 6.

The body frame 130 includes a frame portion 130A, and the frame portion 130A supports the rear vertical frame 144C and protrudes from the threshing device 104 toward the body rear side. Further, the fuel tank 131 is provided in a region below the storage hopper 140 and below the exhaust port 126, among regions between the threshing device 104 and the storage hopper 140. The fuel tank 131 is supported by the frame 130A in a state of protruding from the rear vertical frame 144C toward the rear side of the machine body and in a state of not protruding from the rear end of the frame 130A toward the rear side of the machine body. The fuel supply table 131A is provided adjacent to the fuel fill inlet 131b of the fuel tank 131, and the fuel supply table 131A is supported by the rear vertical frame 144C and the second rear vertical frame 144D in a state of being positioned in parallel with the fuel fill inlet 131 b.

The fuel tank 131 partially overlaps the storage hopper 140 in plan view. The fuel tank 131 is configured as a rectangular box-like body having a rectangular shape with a large width in the front-rear direction and a small width in the left-right direction in plan view, and as shown in fig. 10, a rectangular shape with a small width in the left-right direction and a large width in the up-down direction in front-rear direction of the machine body. That is, the fuel tank 131 has a small width in the left-right direction, a large width in the front-back direction and the up-down direction, and a compact shape in the left-right direction, and can be disposed in a narrow area between the thresher 104 and the grain storage 105, and a large fuel storage capacity can be secured. Further, since the fuel tank 131 does not protrude from the rear end portion of the frame portion 130A toward the rear side of the machine body, the fuel tank 131 is protected by the frame portion 130A so as not to contact other objects during travel of the harvester.

The spacer 132 is disposed on the front side of the fuel tank 131, the spacer 132 is provided in the fuel supply path from the fuel tank 131 to the engine 6, and impurities such as moisture contained in the fuel are separated and removed by the spacer 132. Although not shown, the spacer 132 is provided with a cylindrical drain tank, and the drain tank is formed of a transparent member that allows the inside water to be seen through. Scales are provided along the outer periphery of the drain tank, and an operator can confirm the level of drain accumulated in the drain tank together with the scales.

[ grain depository ]

As shown in fig. 9 and 10, the storage hopper 140 includes a rectangular box-shaped portion 140A having a substantially bottomless box shape that forms a substantially rectangular parallelepiped space on the upper side, and a flow-down guide portion 140B having three funnel portions 146, and 146 having a narrow lower portion on the lower side. The lower end opening of the rectangular box-shaped portion 140A is connected to the upper end opening of the downflow guide 140B, and a space is formed in a state where the inside of the rectangular box-shaped portion 140A is connected to the inside of the downflow guide 140B. That is, the entire inner space of the rectangular box-shaped portion 140A and the inner space of the flow-down guide 140B forms a storage space for storing grains. A discharge port 141 capable of discharging grains downward is formed at the lower end portions of the three funnel portions 146, and a manually operated shutter mechanism 147 capable of opening and closing the discharge port 141 is provided.

With such a configuration, the rectangular box-shaped portion 140A and the downflow guide 140B are prepared separately in advance, and can be connected by fitting and caulking the lower end opening of the rectangular box-shaped portion 140A and the upper end opening of the downflow guide 140B, thereby improving productivity.

The collection space 142 includes a bag holding portion 139 for holding a grain storage bag for storing grains discharged from the discharge port 141 of the storage hopper 140 in a vertical posture. The bag holding portion 139 is provided with a plurality of support rods 139a extending in a cantilever shape in a left-right direction so as to be locked to the upper portion of the grain-containing bag to hold the vertical posture. A placing table 133 for receiving and supporting a grain storage bag for storing grains is provided below the storage hopper 140. In a collecting space 142 which is a working space between the storage bin 140 and the mounting table 133, a grain storage bag is disposed, and grains flowing down from the discharge port 141 are bagged.

A partition plate 134 is provided at a side end portion of the platform 133 on the side where the threshing device 104 is located, and the partition plate 134 is divided into a collection space 142 below the storage bucket 140 and a space between the threshing device 104 and the storage bucket 140. The partition 134 is provided over the lower portion of the front vertical frame 144A and the lower portion of the rear vertical frame 144C, the longitudinal direction of the partition 134 is along the machine body front-rear direction, and the short side direction of the partition 134 is along the machine body vertical direction. The partition 134 is provided on the right side of the body with respect to the fuel tank 131 and the spacer 132, that is, on the opposite side of the fuel tank 131 and the spacer 132 from the side where the threshing device 104 is located. According to this configuration, even when the grain-containing bag is tilted to the side where the threshing device 104 is located, the grain-containing bag is blocked by the partition plate 134 and remains in the collecting space 142.

An opening 134a is formed in a portion of the partition plate 134 adjacent to the spacer 132 in the transverse direction of the machine body. The operator can visually confirm the drain tank of the spacer 132 through the collection space 142 via the opening 134a, and the maintenance operation of the spacer 132 is facilitated.

A work board 135 on which an assistant worker for performing a grain collection work can ride is provided on the right side of the platform 133. The working clamp plate 135 is supported by the body frame 130 so as to be swingable about a forward and backward swing axis Z at an inner (left) end of the body, and is configured to be capable of changing a swing posture into a working posture in which it extends outward in the lateral direction of the body and an accommodating posture in which it retracts inward in the body. The rear end of the work clamp 135 is located on the rear side of the machine body with respect to the rear vertical frame 144C and the second rear vertical frame 144D, and the rear portion of the work clamp 135 is supported by the frame 130A. That is, the length of the body of the work board 135 in the front-rear direction is extended as long as possible, and the space under the operator's feet is configured to be as wide as possible.

An auxiliary top cover 128 as a sunshade member covering the upper side of the working area is provided above the storage hopper 140. The auxiliary top cover 128 can block sunlight irradiation to an auxiliary worker who works in the working area while riding on the working board 135.

The auxiliary top cover 128 is supported so as to be swingable between a use state and a storage state at an outer portion on the right side of the upper portion of the storage hopper 140. To explain this, as shown in fig. 10, the auxiliary top cover 128 is supported swingably about a swing axis X located at a position higher than the top plate 140C via a pair of fulcrum brackets 136 and 136 attached to the upper right portion of the top plate 140C of the storage bucket 140.

[ concerning the supporting frame of the hopper ]

As shown in fig. 9 to 14, the front vertical frame 144A and the second front vertical frame 144B are arranged in the left-right lateral direction on the front lower side of the storage bucket 140. The front vertical frame 144A and the rear vertical frame 144C are disposed so as to overlap each other when viewed in the front-rear direction. The rear vertical frame 144C and the second rear vertical frame 144D are supported by the frame 130A so as to be arranged laterally at the lower rear side than the storage hopper 140, and are arranged rearward of the rear end portion of the threshing device 104 in the front-rear direction.

The second rear vertical frame 144D is located further inward in the lateral direction of the machine body than the second front vertical frame 144B in a plan view. With this configuration, in combination with the configuration in which the rear end portion of the work board 135 is located on the rear side of the machine body with respect to the second rear vertical frame 144D, the space under the feet of the operator is ensured to be wide, and the workability and working environment of the operator are improved.

A front lateral frame 145A extending in the transverse direction of the machine body is connected to an upper end of the front vertical frame 144A and an upper end of the second front vertical frame 144B. The upper end of the front vertical frame 144A is coupled to the lower surface of the front lateral frame 145A, and the upper end of the second front vertical frame 144B is coupled to the lower surface of the front lateral frame 145A. Further, a rear lateral frame 145B extending in the transverse direction of the machine body is coupled to an upper end of the rear vertical frame 144C and an upper end of the second rear vertical frame 144D. The upper end of the rear vertical frame 144C is coupled to the lower surface of the rear horizontal frame 145B, and the upper end of the second rear vertical frame 144D is coupled to the lower surface of the rear horizontal frame 145B. The rear vertical frame 144C and the second rear vertical frame 144D are disposed rearward of the rear end portion of the threshing device 104 in the front-rear direction, and the rear lateral frame 145B is located rearward of the threshing device 104.

As shown in fig. 12, the side of the front-side lateral frame 145A where the threshing device 104 is located compared to the front longitudinal frame 144A is a protruding portion 145c that extends to the right-side wall 104A of the threshing device 104. A coupling bracket 145d is welded and fixed to an extending end of the extending portion 145c, that is, an end of the threshing device 104. The coupling bracket 145d is formed in a flange shape with respect to the protruding portion 145c, and abuts against the right side wall 104A of the threshing device 104, and the coupling bracket 145d and the right side wall 104A are coupled by a bolt. The bolt coupling portion of the coupling bracket 145d is located outside the cross section of the protruding portion 145c, and is configured to allow an operator to easily couple the bolts using an impact wrench or the like.

The front lateral frame 145A is supported at three points by the front longitudinal frame 144A, the second front longitudinal frame 144B, and the right side wall 104A of the threshing device 104. The end of the front lateral frame 145A opposite to the side where the threshing device 104 is located near the connection point with the second front vertical frame 144B, and slightly protrudes outward in the lateral direction of the machine body from the connection point between the front lateral frame 145A and the second front vertical frame 144B.

The front pipe 125A of the exhaust pipe 125 is disposed below the protruding portion 145c of the front lateral frame 145A at the protruding portion 145 c. The front pipe 125a is supported by the protruding portion 145c via the support bracket 129. That is, the exhaust pipe 125 passes through between the threshing device 104 and the storage bin 140 in a state of passing below the protruding portion 145c of the front lateral frame 145A protruding from the front vertical frame 144A toward the threshing device 104 and being supported by the protruding portion 145 c.

The end of the rear lateral frame 145B on the side where the threshing device 104 is located near the rear longitudinal frame 144C. Further, the end portion of the rear-side lateral frame 145B on the side opposite to the side where the threshing device 104 is located protrudes in the left-right direction to the same left-right position as the end portion of the front-side lateral frame 145A on the body lateral outside. Since the second rear vertical frame 144D is located further inward in the lateral direction of the machine body than the second front vertical frame 144B in a plan view, the end portion of the rear lateral frame 145B on the lateral outer side of the machine body extends outward in the lateral direction of the machine body from the second rear vertical frame 144D.

Front bracket 148A is welded and fixed to an upper surface portion of a connecting portion between front vertical frame 144A and front lateral frame 145A of front vertical frame 144A, and front bracket 148A is cantilevered rearward from the upper surface portion of front lateral frame 145A. Further, a rear bracket 148B is welded and fixed to an upper surface portion of a connecting portion of the rear vertical frame 144C and the rear lateral frame 145B of the rear vertical frame 144C, and the rear bracket 148B is cantilevered forward from the upper surface portion of the rear lateral frame 145B. That is, the front bracket 148A and the rear bracket 148B protrude from each of the front lateral frame 145A and the rear lateral frame 145B toward the side facing each other. The front-rear direction frame 149 is placed on and supported by the upper surface portion of the front bracket 148A and the upper surface portion of the rear bracket 148B. In other words, the front-rear direction frame 149 connects the connecting portion of the front vertical frame 144A and the front lateral frame 145A, and the connecting portion of the rear vertical frame 144C and the rear lateral frame 145B. Since the front-rear direction frame 149 is disposed substantially directly above the front vertical frame 144A and substantially directly above the rear vertical frame 144C, the support structure of the front-rear direction frame 149 is stabilized.

Fig. 13 shows the storage bin 140 and the bin support frame 143 when the storage bin 140 is viewed from the side where the threshing device 104 is located. Fig. 14 is a rear cross-sectional view of front-rear direction frame 149 when viewed from a region of front-rear direction frame 149 that is on the body rear side of connection frame 150 and on the body front side of bracket 138. In fig. 13, the grain raising device 120 is provided toward the front side of the frame 149 with respect to the front and rear, and the exhaust pipe 125 is provided toward the front side of the grain raising device 120 with respect to the paper. In fig. 14, the grain raising device 120 and the exhaust duct 125 are provided between the front side horizontal frame 145A and the connection frame 150.

As shown in fig. 12 to 14, the front-rear direction frame 149 is a plate-shaped frame, and a bent portion 149a bent downward is formed in the front-rear direction at a portion of the front-rear direction frame 149 on the side opposite to the side where the threshing device 104 is located in the short-side direction. That is, the front-rear direction frame 149 is formed in an L-shape when viewed in a cross section in the front-rear direction. This improves the rigidity of the frame 149 in the front-rear direction by the bent portion 149 a. The side of the front-rear direction frame 149 closer to the threshing device 104 than the bent portion 149a is a horizontal plane, and bolt insertion holes are formed at both ends in the longitudinal direction of the horizontal plane.

Bolt insertion holes corresponding to the bolt insertion holes of the front-rear direction frame 149 are formed in the front bracket 148A and the rear bracket 148B, respectively, and the front-rear direction frame 149 and the front bracket 148A are bolted and the front-rear direction frame 149 and the rear bracket 148B are bolted and connected in a state where the bolt insertion holes of the front bracket 148A and the rear bracket 148B are engaged with the bolt insertion holes of both ends in the longitudinal direction of the front-rear direction frame 149. In this way, the front-rear direction frame 149 connects the respective upper surface portions of the front lateral frame 145A and the rear lateral frame 145B to each other via the front bracket 148A and the rear bracket 148B.

The connection frame 150 is welded and fixed to the lower surface of the horizontal surface of the portion of the front and rear facing the rear of the front-rear intermediate portion of the frame 149. The coupling frame 150 is a plate-shaped frame facing the lower surface of the horizontal surface of the front-rear direction frame 149, extends from a portion near the rear of the front-rear direction frame 149 to the side where the threshing device 104 is located in the machine-body lateral direction, and is coupled to a portion near the rear of the right side wall 104A of the threshing device 104 via a coupling bracket 156. Therefore, in a state where the coupling frame 150 is supported by the right side wall 104A, the front-rear direction frame 149 is placed and supported on the upper surface portion of the coupling frame 150. An inclined surface 150a is formed on the side of the connecting frame 150 closer to the threshing device 104 than the middle portion in the longitudinal direction. The region on the side where the inclined surface 150a of the coupling frame 150 is located is inclined so as to be located downward toward the frame 149 as it goes farther from the front and rear. The upper surface of the coupling frame 150 on the side facing the frame 149 from the front to the rear of the inclined surface 150a is a horizontal surface 150 b.

The coupling bracket 156 and the inclined surface 150a are coupled by welding. Therefore, the coupling frame 150 and the coupling bracket 156 are integrally formed. The coupling bracket 156 is formed in a flange shape with respect to the inclined surface 150a, and the coupling bracket 156 and the right side wall 104A are coupled by a bolt. Although the coupling bracket 145d is not shown in fig. 14, the coupling bracket 145d is positioned on the front side of the body with respect to the coupling bracket 156 in a state of overlapping the coupling bracket 156 when viewed in the front-rear direction. Further, the vertical positions of the bolt fastening of the fastening bracket 156 also substantially overlap the vertical positions of the bolt fastening of the fastening bracket 145 d. The bolt coupling portion of the coupling bracket 156 is located outside the cross section of the inclined surface 150a, and is configured to be easily screwed by an operator using an impact wrench or the like, similarly to the coupling bracket 145 d.

The front-rear frame 149 is supported by the upper surface of the front bracket 148A, the upper surface of the coupling frame 150, and the upper surface of the rear bracket 148B, so that the upper surfaces of the front-rear frame can be formed in a flush manner. With this configuration, even if dust falls on the upper surface of the front-rear facing frame 149, the dust is easily blown off by wind or the like, and the dust is less likely to remain on the upper surface of the front-rear facing frame 149. Similarly, the inclined surface 150a and the horizontal surface 150b of the coupling frame 150 are formed in a flush manner, and dust is less likely to accumulate on the upper surface of the coupling frame 150.

As shown in fig. 9 and 12, front support section 152A is welded and fixed to front lateral frame 145A, and rear support section 152B is welded and fixed to rear lateral frame 145B. The support members 151 and 151 are respectively bolted to the front support section 152A and the rear support section 152B, and the storage bucket 140 is placed on and supported by each of the pair of front and rear support members 151 and 151. Thus, the storage hopper 140 is supported by the hopper support frame 143. The support member 151 is formed by bending a plate material, and is bolted to the inclined surface portion of the front and rear end portions of the storage bucket 140 at upper and lower sides of the upper and lower intermediate positions.

As shown in fig. 9 to 12, the grain storage unit 105 includes a guide 160 for protecting an assistant operator who is placed on the work clamp plate 135 and performs a grain collection work, and an armrest 153 that can be held and operated by the assistant operator performing the grain collection work.

The armrest 153 has a grip portion 153A made of a round pipe material, and a pair of front and rear coupling end portions 153B located on both front and rear sides of the grip portion 153A. The grip 153A extends long in the front-rear direction at a right outer side portion of the storage bucket 140. The coupling end 153B is formed by crushing a circular tube material in a diameter direction into a flat plate shape, and the coupling end 153B formed into the flat plate shape is bolted to the right end portion of the front lateral frame 145A and the rear lateral frame 145B on the machine body side.

As described above, the front pipe 125A of the exhaust pipe 125 is disposed below the front cross frame 145A, and therefore the front pipe 125A and the recovery space 142 are close to each other. Therefore, when the exhaust gas flows inside the exhaust pipe 125, the high-temperature exhaust gas easily radiates the radiation heat from the exhaust pipe 125 to the collection space 142. Therefore, as shown in fig. 12 and 13, a cover 154 is provided on the opposite side of the exhaust pipe 125 from the side where the threshing device 104 is located, that is, between the front pipe 125a and the recovery space 142. The cover 154 is formed of a flat plate bent in an L-shape when viewed in the front-rear direction, and has a horizontal surface 154a at a position above the bent portion and a vertical surface 154b at a position below the bent portion. As shown in fig. 14, the right end of horizontal surface 154a is bolted to the front part of front-rear direction frame 149, and cover 154 is bent in the vertical direction at the right end of horizontal surface 154 a. Thus, cover 154 is supported at the front of frame 149. The vertical surface 154b is adjacent to the front pipe 125a of the exhaust pipe 125 in a lateral arrangement, and the vertical surface 154b receives the radiant heat radiated from the exhaust pipe 125. Therefore, the worker who performs the bagging work of grains in the work clamp 135 and the collection space 142 hardly feels the hot air emitted from the exhaust duct 125, and the workability in the work clamp 135 and the collection space 142 is improved.

[ about the guide part ]

As shown in fig. 8 to 13, the guide 160 includes a front arm 161, a rear arm 162, and a straight backrest 163. The base end of the front arm 161 is swingably supported by the right end of the front horizontal frame 145A, and the front arm 161 extends from the base end in a direction orthogonal to the body front-rear direction. The base end of the rear-side arm 162 is swingably supported by the right-side end of the rear horizontal frame 145B, and the rear-side arm 162 extends from the base end in a direction orthogonal to the body front-rear direction. The longitudinal direction of the backrest 163 extends in the machine body front-rear direction. The rear arm 162 and the backrest 163 are formed as an L-shaped member 164 by bending a circular pipe material into a substantially L-shape. A cylindrical cushion member 165 is attached to the backrest portion 163. The cushioning member 165 is made of a soft material such as urethane. The front arm 161 is formed of a square tube.

The guide portion 160 is formed by connecting a plurality of divided bodies. In the second embodiment, the L-shaped member 164 formed by integrally forming the rear arm 162 and the backrest portion 163, and the front arm 161 are configured as divided bodies, and the division boundary is located at the front of the backrest portion 163. In a state where the guide part 160 is divided, the cylindrical buffer member 165 is fitted to the outside of the backrest part 163, and thus the buffer member 165 can be easily assembled to the backrest part 163.

A specific connection structure of the plurality of divided bodies will be described. A pin hole 163a is formed in the front portion of the backrest portion 163, and an insertion hole 161a is formed in the free end portion of the front arm portion 161. The insertion hole 161a is formed to have a size that allows the backrest 163, which is a circular tube material, to be inserted therethrough. The front portion of the backrest part 163 is inserted into the insertion hole 161a, and a pin is inserted into the pin hole 163a and fixed in a state where the pin hole 163a is positioned further forward than the front-side arm part 161. Thereby, the backrest part 163 is held in position so as not to fall off from the insertion hole 161 a. In other words, the front arm 161 and the backrest 163 are coupled so that the free end of the front arm 161 fits in the front of the backrest 163. By removing the pin fixed to the pin hole 163a, the connection between the front arm portion 161 and the backrest portion 163 is released.

As shown in fig. 10, the guide part 160 is configured to be vertically swingable between a use state and a storage state. The use state of the guide 160 is a state in which the backrest 163 is extended outward in the lateral direction of the machine body from the storage bucket 140 and can receive the body of the operator (indicated by a solid line in fig. 10). The storage state of the guide 160 is a state in which the backrest 163 is retracted inward in the lateral direction of the machine body and approaches the top plate 140C of the storage bucket 140 (shown by imaginary lines in fig. 10 and solid lines in fig. 13).

A locking portion 155A is welded and fixed to a right end of the front lateral frame 145A, and a locking portion 155B is welded and fixed to a right end of the rear lateral frame 145B. The locking portion 155A restricts the lower swing of the front arm portion 161, and when the locking portion 155A abuts against the front arm portion 161, the swing angle of the front arm portion 161 becomes the lower swing limit. The locking portion 155B restricts the lower swing of the rear arm portion 162, and when the locking portion 155B abuts against the rear arm portion 162, the swing angle of the rear arm portion 162 is the lower swing limit. The locking portions 155A and 155B are inclined so as to be located downward toward the lateral outer side of the machine body.

When the guide 160 is in use, the front arm 161 and the rear arm 162 are inclined so as to be positioned further downward toward the outer side in the lateral direction of the machine body, and the backrest 163 protrudes outward in the lateral direction of the machine body from the outer end of the working board 135. That is, when the guide 160 is in the use state, the backrest 163 is located below the swing fulcrum Y of each of the front arm 161 and the rear arm 162 and laterally outside the machine body from the outer end of the work clamp 135, that is, on the back side of the worker facing the bucket 140.

[ concerning the retaining mechanism ]

When the guide 160 is in the accommodated state, the front arm 161 and the rear arm 162 are inclined inward of the body from the pivot point Y when viewed in the front-rear direction of the body, and the backrest 163 is located inward of the body from the pivot points Y of the front arm 161 and the rear arm 162. In this state, the backrest 163 approaches the storage bucket 140 and is held in position by the holding mechanism 170 (see fig. 15). In this way, the use state and the storage state are set at both side positions of the swing fulcrum Y of the span guide 160. Therefore, the guide 160 can be configured to be held in position in the use state or the storage state by the own weight of the guide 160, and the possibility of the state of the guide 160 being inadvertently switched to the use state or the storage state is reduced.

As shown in fig. 15, the holding mechanism 170 is fixed by bolts to the fulcrum brackets 136 attached to the upper portions of the top plates 140C of the storage bins 140 on the front side of the body of the pair of fulcrum brackets 136 and 136. That is, the storage container 140 is attached with the holding mechanism 170 holding the backrest 163 in the accommodated state via the fulcrum bracket 136. The holding mechanism 170 is formed into a C-shape when viewed in the front-rear direction by press molding of a flat plate, for example. A support base end portion 171 located at the left end portion of the body of the holding mechanism 170 is fixed to the fulcrum bracket 136 by a bolt. An upper housing part 172 on the upper side of the machine body and a lower housing part 173 on the lower side of the machine body extend from the support base end part 171 of the holding mechanism 170, respectively. The spring-back portion 175 extends forward from the support base end portion 171.

As shown in fig. 15 and 16, a pair of upper and lower inlet portions 174, 174 are formed at the right end of the holding mechanism 170, i.e., at each of the projecting distal end portion of the upper housing portion 172 and the projecting distal end portion of the lower housing portion 173. The respective separation distances D1 of the inlet portions 174, 174 form each of the inlet portions 174, 174 to be smaller than the cross-sectional diameter D2 of the backrest portion 163. That is, inlet portions 174 and 174 are set to be smaller in cross-sectional shape than backrest portion 163. The upper and lower receiving portions 172 and 173 are formed such that the distance between the upper end of the upper receiving portion 172 and the lower end of the lower receiving portion 173 is substantially the same as or larger than the cross-sectional diameter D2 of the backrest portion 163. In this way, an accommodating portion 176 capable of accommodating a part of the backrest portion 163 is formed by the support base end portion 171, the upper accommodating portion 172, the lower accommodating portion 173, and the pair of upper and lower inlet portions 174 and 174, and the space inside surrounded by the accommodating portion 176 is an accommodating space S.

When the operator swings the guide 160 upward and the guide 160 is switched from the working state to the storage state, the backrest 163 abuts against the inlets 174, 174 of the holding mechanism 170. From this state, when the backrest 163 is pressed toward the side where the threshing device 104 is located, the upper and lower accommodating portions 172 and 173 elastically deform, and the inlet portions 174 and 174 widen upward, downward, and outward. This allows the backrest 163 to enter and exit the storage section 176. That is, the backrest 163 enters the storage space S beyond the inlet portions 174, 174. When the backrest 163 enters the storage space S, the upper and lower positions of the inlet 174 and 174 are restored by the restoring force of the upper and lower storage portions 172 and 173. That is, since the distance D1 between the inlet portions 174 and 174 is smaller than the cross-sectional diameter D2 of the backrest portion 163, even if the backrest portion 163 located inside the storage space S swings toward the working state side, the backrest portion 163 abuts against the inlet portions 174 and 174, and the swing from this position toward the working state side is restricted. Therefore, since the backrest 163 swings beyond the inlet portions 174, the operator needs to pull the backrest 163 to the working state side, and the backrest 163 is held at the inner position of the storage space S without swinging the backrest 163 to the working state side. In this way, the holding mechanism 170 is configured to be able to hold the position of the front end side portion of the backrest 163 located on the front side in the extending direction.

The spring-back portion 175 has a protrusion 175a protruding rightward of the machine body at a position opposite to the side where the support base end portion 171 is located in the front-rear direction. When a part of the backrest part 163 enters the inside of the storage space S, the protrusion 175a abuts against the backrest part 163. In this state, the restoring force of the upper and lower accommodating portions 172 and 173 is transmitted to the protrusion 175a via the backrest portion 163, and the protrusion 175a is displaced leftward of the machine body by the elastic deformation of the rebound portion 175. Therefore, the storage portion of the backrest portion 163 is pressed against the inlet portions 174, 174 by the urging force of the rebound portion 175. In other words, the backrest portion 163 located inside the storage space S is pressed at three points by the pair of upper and lower inlet portions 174, 174 and the protrusion portion 175 a. Thus, when the guide 160 is in the storage state, the storage portion of the backrest 163 does not become loose inside the storage space S, and the state of being stored in the storage portion 176 is maintained.

[ arrangement for lighting devices ]

As shown in fig. 10 and 12, the illumination device 137 illuminating the collection space 142 is supported at the rear of the front-rear direction frame 149. A bracket 138 made of an angle steel member having an L-shaped cross section is bolted to the rear portion of the front-rear direction frame 149, and the bracket 138 extends from the connection portion with the front-rear direction frame 149 to the body right rear side while maintaining the vertical position. The illumination device 137 is bolted to the distal end portion of the bracket 138, and the illumination device 137 is disposed adjacent to a connection portion of the rear vertical frame 144C and the rear lateral frame 145B of the space between the threshing device 104 and the storage bucket 140. The illumination direction of the illumination device 137 is directed toward a space below the storage bin 140, that is, toward a direction in which the entire collection space 142 can be illuminated. As the light source of the illumination device 137, a light emitting diode is used, but an HID (High-Intensity Discharge) lamp, a xenon lamp, or the like may be used.

According to this configuration, since the illumination device 137 is disposed in the vicinity of the corner portion of the inner side of the body at the rear portion of the storage bucket 140, the illumination device 137 can illuminate a wide range of the collection space 142 even when the illumination range of the illumination device 137 is narrow. Further, the lighting device 137 is located between the threshing device 104 and the storage bucket 140, so the lighting device 137 can illuminate the collecting space 142 without interfering with the storage bucket 140.

[ guiding structure of grain in storage hopper ]

As shown in fig. 17 and 18, the grain raising device 120 is connected to the storage hopper 140 at its upper end. The winnowing device 120 includes a longitudinal feed screw rod 180, a plate-shaped rotary wing 181, and a discharge casing 182 covering the periphery of the rotary wing 181. The longitudinal feed threaded rod 180 carries grain vertically from the bottom of the threshing device 104. The rotary wing 181 is connected to the conveyance direction end portion of the vertical feed screw rod 180, and the rotary wing 181 rotates around the axis P integrally with the vertical feed screw rod 180. A discharge port 182a is formed in a portion of the discharge case 182 facing the storage hopper 140. The vertical height of the discharge port 182a in the axial direction of the rotary wing 181 is set larger than the vertical height of the rotary wing 181. An inner wall 182b of the ejection case 182 on the front side of the axial center P is substantially along the transverse direction of the machine body in plan view, and an inner wall 182c of the ejection case 182 on the rear side of the axial center P is inclined rearward with respect to the transverse direction of the machine body. The rotary wing 181 rotates clockwise in a plan view, and the grain delivered to the discharge shell 182 is pushed out from the discharge port 182a into the storage hopper 140 by the rotary wing 181.

The winnowing device 120 of the second embodiment is provided against the front of the storage hopper 140. Therefore, if only the grains are pushed out from the discharge port 182a into the storage hopper 140, the grains are stored in the funnel portions 146 and 146 that are biased toward the front two portions of the three lower narrow funnel portions 146, 146 and 146, and the grains may be difficult to be stored in the funnel portion 146 at the rear portion of the storage hopper 140. To avoid such a problem, the throw guide plate 183 is connected to the tip of the ejection port 182a in a cantilever manner.

The throwing guide plate 183 is formed in a flat plate shape, and in a state where the tip of the rotary wing 181 is closest to the throwing guide plate 183, the throwing guide plate 183 is inclined to the right rear side in the tangential direction of the rotary wing 181, that is, to the right center near the rear of the storage bucket 140 in a plan view. The pitch guide plate 183 has a vertical width extending over a lower half of the vertical width of the ejection port 182 a. Thereby, the grain in the lower half of the grain ejected from the ejection port 182a is pushed against the throwing guide 183 and flies up to the rear of the storage hopper 140. Further, the grain in the upper half of the grain ejected from the ejection port 182a is pushed out toward the front of the storage bin 140 along the inner wall 182b on the front side of the ejection case 182.

In this way, the grain ejected from the ejection port 182a is pushed by the throwing guide 183 and flies up to the rear of the storage bucket 140, so that the grain is easily stored in the funnel portion 146 at the rear of the storage bucket 140. This allows grains to be stored in a well-balanced manner in the three funnel portions 146, 146 of the storage bucket 140, thereby improving the storage efficiency of the storage bucket 140.

The vertical width of the projecting guide plate 183 is distributed over the lower half of the vertical width of the discharge port 182a, but the vertical width of the projecting guide plate 183 can be changed as appropriate. Further, a guide plate inclined in a direction other than the pitch guide plate 183 may be provided on the upper side of the ejection port 182a with respect to the pitch guide plate 183. In this case, the extension length of the guide plate from the ejection port 182a may be the same as that of the throw guide plate 183 or may be different from that of the throw guide plate 183.

In addition to the structure shown in fig. 17 and 18, the flow-down guide plate 184 as shown in fig. 19 and 20 may be provided in the rectangular box-shaped portion 140A of the storage hopper 140. Although the projecting guide plate 183 is shown in fig. 19 and 20, the projecting guide plate 183 may not be provided. The flow-down guide plate 184 is formed as a flat plate of a scalene hexagon having five corners C1, C2, C3, C4, C5, and C6. The tip of the downflow guide plate 184 is located along the side E1 in the transverse direction of the machine body over the corner C1 and the corner C2, and is located at substantially the same position as the tip of the ejection port 182a in side view. The rear end of the flow-down guide plate 184 is located at a position E4 in the transverse direction of the machine body over the corner C4 and the corner C5, and is located behind the funnel portion 146 at the front and rear center in a side view. The upper and lower positions of the flow-down guide plate 184 are inclined so that a portion closer to the edge E4 is located lower. Therefore, the grain ejected from the ejection port 182a is guided by the funnel portion 146 to the side where the rearmost funnel portion 146 is located.

A side E6 is formed over the corner C1 and the corner C6 of the downflow guide plate 184, and the side E6 is connected and fixed to the left side wall of the rectangular box-shaped portion 140A. The corner C3 of the flow-down guide plate 184 is fixedly connected to the right side wall of the storage bin 140. The edge E1 is located directly above the forwardmost funnel portion 146 and is formed transversely of the body. The corner C2 is located directly above the foremost funnel 146, and the side E2 is inclined so that the portion located on the rear side is closer to the right side wall of the rectangular box-shaped portion 140A.

The corner C4 and the corner C5 are located near the left-right center of the storage hopper 140. The side E3 extending over the corner C3 and the corner C4 is inclined so as to be located closer to the center of the storage hopper 140 in the left-right direction as the corner C4 is closer in a plan view. Further, the side E5 extends over the corner C5 and the corner C6 and is inclined so as to be located closer to the center of the storage bucket 140 in the left-right direction as the corner C5 is closer in a plan view. Therefore, the left-right width of the downflow guiding plate 184 on the rear side of the corner C3 is formed to be narrower as the position closer to the side E4.

Most of the grains discharged from the discharge port 182a and placed on the flow-down guide plate 184 and falling from the edge E1 are accumulated in the tip funnel portion 146, and the grains falling from the edge E2 are accumulated in one of the two front funnel portions 146. Grain that does not fall from edge E1 or edge E2 but remains on the flow guide plate 184 is guided toward the rearmost funnel portion 146 and also falls from edge E3 and edge E4. Most grains falling from the side E3 and the side E5 are accumulated in the front and rear central funnel portions 146, but most grains falling from the side E4 are accumulated in the rearmost funnel portion 146. In this way, since most of the grains discharged from the discharge port 182a are guided by the downward guide plate 184 toward the rearmost funnel portion 146, the grains are stored in a well-balanced manner in the three funnel portions 146, and the storage efficiency of the storage hopper 140 is improved.

The flow-down guide plate 184 shown in fig. 20 is configured to be inclined only in the front-rear direction and not in the left-right direction, but may be configured to be inclined not only in the front-rear direction but also in the left-right direction. That is, the downflow guide plate 184 may be inclined so that the portion located on the left or right is located downward. The downflow guide plate 184 is formed in a flat plate shape, but the vertical position of the portion on the left and right center sides of the downflow guide plate 184 may be curved lower than the vertical position of the portion on the left and right outer sides. With this curved structure, many grains placed on the flow-down guide plate 184 are easily guided by the side E4 and fall from the vicinity of the corner C4.

[ Another embodiment of the second embodiment ]

The present invention is not limited to the structure illustrated in the second embodiment, and another representative embodiment of the present invention will be illustrated below. Hereinafter, one of the front arm 161 and the rear arm 162 will be referred to as "one side arm", and the other of the front arm 161 and the rear arm 162 will be referred to as "the other side arm".

(2-1) in the second embodiment, the grain storage unit 105 is provided on the right side of the machine body, and the guide 160 protrudes from the storage hopper 140 to the right side of the machine body. For example, the grain storage 105 may be provided at the rear of the machine body, the work clamp 135 may be provided at the rear of the storage bucket 140, and the guide 160 may protrude from the storage bucket 140 toward the rear of the machine body. That is, the following structure is sufficient: the guide 160 includes a linear backrest 163, one arm extending from one end portion of the backrest 163 in the extending direction of the backrest 163 to one end portion of the bucket support frame 143 and being swingably supported at the one end portion, and the other arm extending from the other end portion of the backrest 163 in the extending direction to the other end portion of the bucket support frame 143 and being swingably supported at the other end portion, the backrest 163 being located on the back side facing the operator of the storage bucket 140 in the use state.

(2-2) in the second embodiment, the L-shaped member 164 and the front-side arm 161, in which the rear-side arm 162 and the backrest 163 are integrally formed, are configured as separate bodies, but the present invention is not limited to this embodiment. For example, the front arm 161 and the backrest 163 may be integrally formed as an L-shaped member. That is, the one arm portion and the backrest portion 163 may be formed as an L-shaped member. In this state, the division boundary may be located at the rear portion of the backrest portion 163, or the rear portion of the backrest portion 163 and the rear arm portion 162 may be connected to each other. That is, the other arm portion and the L-shaped member formed by the backrest portion 163 and the one arm portion are provided as the plurality of divided bodies, and the other arm portion and the L-shaped member may be configured to be connected by being inserted into a free end portion of the other arm portion and held in position. Further, the plurality of divided bodies may include a first arm portion, and an L-shaped member including the backrest portion 163 and a second arm portion, and the first arm portion and the L-shaped member may be configured to be connected to each other by being inserted into a free end portion of the first arm portion and held in position.

Further, as shown in fig. 21, the rear arm portion 162 and the backrest portion 163 may be formed separately, and for example, as a plurality of divided bodies, one arm portion, the other arm portion, and the backrest portion 163 may be provided. Further, the backrest 163 may be connected to the one arm and the other arm by inserting one end of the backrest 163 into a free end of the one arm and inserting the other end of the backrest 163 into a free end of the other arm.

(2-3) in the second embodiment, the division boundary is positioned in the front part of the backrest part 163, but is not limited to this embodiment. For example, as shown in fig. 22 to 24, the division boundary may be located at the front-rear center portion of the backrest portion 163. In this case, the backrest portion 163 is composed of a front backrest portion 163A on the side where the front arm portion 161 is located, and a rear backrest portion 163B on the side where the rear arm portion 162 is located. A front L-shaped member 164B formed integrally with the front arm section 161 and the front backrest section 163A, and a rear L-shaped member 164C formed integrally with the rear arm section 162 and the rear backrest section 163B. The rear end of the front L-shaped member 164B and the front end of the rear L-shaped member 164C may be connected to each other in a state facing each other. The intermediate member 163C is provided between the front backrest part 163A and the rear backrest part 163B, but the intermediate member 163C may have a pin fixing structure as shown in fig. 22, a structure in which drawn parts are fitted as shown in fig. 23, or a screw fixing structure as shown in fig. 24. The front backrest portion 163A and the rear backrest portion 163B may be directly connected without the intermediary of the intermediate member 163C. In this case, the front L-shaped member 164B may be a first L-shaped member, and the rear L-shaped member 164C may be a second L-shaped member, or the front L-shaped member 164B may be a second L-shaped member, and the rear L-shaped member 164C may be a first L-shaped member. That is, the plurality of divided bodies may be configured to include a first L-shaped member and a second L-shaped member, and the first L-shaped member and the second L-shaped member may be coupled to each other by holding a free end portion of one side (one side portion) of the front backrest portion 163A or the rear backrest portion 163B and a free end portion of the other side (the other side portion) of the front backrest portion 163A or the rear backrest portion 163B in facing positions.

(2-4) in the second embodiment, the backrest 163 is held in position by the holding mechanism 170, and the guide 160 is thereby held in the accommodated state, but the present invention is not limited to this embodiment. For example, as shown in fig. 25, a lock device 190 capable of coupling and fixing the rear-side arm portion 162 and the rear-side lateral frame 145B may be provided at the right-side end of the rear-side lateral frame 145B, that is, in the vicinity of the swing fulcrum Y of the rear-side arm portion 162. The locking device 190 is provided with a locking pin 191. In the case where the guide portion 160 is in the accommodated state, the lock pin 191 enters the swing range of the rear arm portion 162, and thereby the lock pin 191 abuts against the rear cross frame 145B, and the downward swing of the rear cross frame 145B is restricted. With this structure, the guide portion 160 is also held in position in the accommodated state. Further, either the holding mechanism 170 or the lock device 190 may be provided, or both the holding mechanism 170 and the lock device 190 may be provided. That is, the holding mechanism 170 may be configured to include a lock device 190, and the lock device 190 may be configured to hold a position of an end portion side portion of the backrest portion 163 located on one side in the extending direction, and may be configured to be capable of fixedly coupling the arm portions located on the other side in the extending direction to the bucket supporting frame 143.

Further, instead of the lock device 190, a spring mechanism may be provided that biases at least one of the pivot points Y of the front arm 161 and the rear arm 162 to pivot the guide 160 to either the use state or the storage state. In this case, a dead point may be provided midway through the swing range between the use state and the accommodated state, and when the dead point is exceeded, the biasing direction may be switched from the use state to the accommodated state or from the accommodated state to the use state.

(2-5) in the second embodiment, the holding mechanism 170 is attached to the fulcrum bracket 136 on the front side of the body among the pair of fulcrum brackets 136, but may be configured as a fulcrum bracket 136 attached to the rear side of the body.

(2-6) in the second embodiment, the cylindrical buffer member 165 is configured to be externally fitted to the backrest portion 163 in a state where the guide portion 160 is divided, but is not limited to this embodiment. For example, the cushion member 165 may be wound around the outer periphery of the backrest portion 163, and the cushion member 165 may be wound around and fixed to the backrest portion 163 by surface fasteners. Further, a slit communicating with the hollow inner periphery of the cushion member 165 may be formed in the axial direction at one end of the outer periphery of the cylindrical cushion member 165, the cushion member 165 may be fitted to the backrest portion 163 through the slit, and the outer peripheral side of the slit may be closed by a surface fastener. That is, the buffer member 165 may be attached to the guide portion 160 so as to enclose the guide portion 160.

(2-7) in the second embodiment, the threshing device 104 is disposed to be offset to the left side of the machine body, and the storage hopper 140 is disposed to be offset to the right side of the machine body, but the present invention is not limited to this embodiment. For example, the threshing device 104 may be disposed to be offset to the right of the machine body, and the storage bucket 140 may be disposed to be offset to the left of the machine body, or the work clamp 135 may be disposed adjacent to the left of the machine body with respect to the storage bucket 140 in this state. That is, the threshing device 104 may be disposed to be offset to one side in the left-right direction of the machine body, and the storage bucket 140 may be disposed to be offset to the other side in the left-right direction of the machine body and to be aligned in the lateral direction of the threshing device 104.

(2-8) in the second embodiment, the front portion of the storage bucket 140 is mounted and supported on the front lateral frame 145A via the front support portion 152A and the support member 151, and the rear portion of the storage bucket 140 is mounted and supported on the rear lateral frame 145B via the rear support portion 152B and the support member 151. For example, the storage bucket 140 may be directly supported at four points, i.e., the upper end of the front vertical frame 144A, the upper end of the second front vertical frame 144B, the upper end of the rear vertical frame 144C, and the upper end of the second rear vertical frame 144D. If the hopper support frame 143 is configured to support the storage hopper 140, the support structure of the hopper support frame 143 can be changed as appropriate.

(2-9) in the second embodiment, the front lateral frame 145A is connected to the upper end of the front vertical frame 144A, the rear lateral frame 145B is connected to the upper end of the rear vertical frame 144C, and the front-rear direction frame 149 is connected to the front lateral frame 145A and the rear lateral frame 145B via the front bracket 148A and the rear bracket 148B, respectively, but the present invention is not limited to this embodiment. For example, as shown in fig. 26 and 27, the front-rear direction frame 149 may be directly connected to the upper end of the front vertical frame 144A, and the front-rear direction frame 149 may be directly connected to the upper end of the rear vertical frame 144C. Further, the front lateral frame 145A may be coupled to a side portion of the upper end portion of the front vertical frame 144A, and the rear lateral frame 145B may be coupled to a side portion of the upper end portion of the rear vertical frame 144C. Note that, the front bracket 148A may be directly fixed to the upper end of the front vertical frame 144A, and the rear bracket 148B may be directly fixed to the upper end of the rear vertical frame 144C. In this state, front-rear direction frame 149 may be coupled to front vertical frame 144A and rear vertical frame 144C via front bracket 148A and rear bracket 148B, respectively.

(2-10) in the second embodiment, the front-rear direction frame 149 extends over the part of the bucket support frame 143 located closer to the threshing device 104 than the front support section 152A of the front lateral frame 145A and the part located closer to the threshing device 104 than the rear support section 152B of the rear lateral frame 145B, but the present invention is not limited to this embodiment. For example, the front-rear direction frame 149 may be provided over a portion of the bucket support frame 143 located closer to the work bridge 135 than the front support portion 152A of the front lateral frame 145A and a portion of the rear lateral frame 145B located closer to the work bridge 135 than the rear support portion 152B. Further, the front-rear direction frame 149 may be provided on both sides of the front support portion 152A and the rear support portion 152B of the hopper support frame 143.

(2-11) in the second embodiment, the front-side lateral frame 145A is supported to the threshing device 104 by the extension of the protruding portion 145c to the threshing device 104, but is not limited to this embodiment. For example, the front lateral frame 145A may be configured not to extend to the threshing device 104, and the front-rear direction frame 149 may be connected to the front-rear direction frame 149 and the threshing device 104 in a state of being located over the front-rear direction frame 149 and the threshing device 104, respectively, at each of the front portion and the rear portion of the threshing device 104.

(2-12) in the second embodiment, the downward bent portion 149a is formed over the front-rear direction toward the frame 149, but the bent portion 149a may be formed upward.

(2-13) the coupling frame 150 according to the second embodiment may not be a flat frame, but may be a member having an L-shaped cross section, for example.

(2-14) in the second embodiment, the lighting device 137 is disposed in the vicinity of the corner portion of the rear portion of the storage bucket 140 on the inside of the machine body, but is not limited to this embodiment. For example, the lighting device 137 may be disposed near a corner portion of the front portion of the storage container 140 on the inner side of the machine body.

(2-15) in the second embodiment, the front pipe 125A of the exhaust pipe 125 is positioned below the front lateral frame 145A, but the front pipe 125A of the exhaust pipe 125 may be positioned above the front lateral frame 145A. In this state, the front pipe 125A may be placed and supported by the front lateral frame 145A.

(2-16) in the second embodiment, the cover 154 is supported at the front portion of the front-rear direction frame 149, but for example, the cover 154 may be supported by the front side lateral frame 145A.

(2-17) in the second embodiment, the rear vertical frame 144C and the second rear vertical frame 144D are provided as the support column 144 supporting the rear portion of the storage bucket 140, but the present invention is not limited to this embodiment. For example, the pillar 144 supporting the rear portion of the storage bucket 140 may be configured to include only the rear vertical frame 144C without the second rear vertical frame 144D. In this case, the rear vertical frame 144C may be located at the left and right center portions of the rear lateral frame 145B. With this configuration, the space under the foot of the recovery space 142 can be made wide.

(2-18) in the second embodiment, the rear vertical frame 144C and the second rear vertical frame 144D are supported by the frame 130A, but the rear vertical frame 144C and the second rear vertical frame 144D may be supported by the body frame 130 without being supported by the frame 130A. The rear portion of the fuel tank 131 and the rear portion of the work cleat 135 may be supported by the body frame 130 without being supported by the frame 130A.

(2-19) in the second embodiment, the opening 134a is formed in the partition plate 134 at a position adjacent to the spacer 132 in the transverse direction of the machine body, but the opening 134a may not be formed. In this case, the spacer 132 may be provided at a position higher than the partition plate 134.

(2-20) in the second embodiment, a general-type combine is exemplified as the combine, but the present invention may be applied to a self-threshing side combine instead of the general-type combine.

Description of the reference numerals

4: threshing device

6: engine

25: storage bin hopper

27: supporting frame for bin hopper

33: frame of machine body

35: support post

41: fuel tank

46, 47: auxiliary machine for fuel

51: wall component

51A: inclined plane part

51B: longitudinal section

Q: space(s)

125: exhaust pipe

130: frame of machine body

130A: frame part

131: fuel tank

132: spacer

134: partition board

134 a: opening part

135: working clamping plate

137: lighting device

140: storage bin hopper

140A: rectangular box-shaped part (storage space)

140B: flow guide part (storage space)

141: discharge port (discharge part)

142: recovery space (working space)

143: supporting frame for bin hopper

144A: front longitudinal frame

144B: second front longitudinal frame

144C: rear longitudinal frame

144D, the ratio of: second rear longitudinal frame

145A: front side transverse frame

145B: rear lateral frame

145 c: extension part

148A: front bracket

148B: rear bracket

149: front and back orientation frame

149 a: a bent part

150: connecting frame

151: support member

152A: front support

152B: rear support part

153: armrest

154: cover body

160: guide part

161: front arm (one side arm)

162: rear arm (other side arm)

163: back rest

164: l-shaped component

165: buffer member

170: holding mechanism

174: inlet section

175: rebound part

176: accommodating part

180: and a locking device.

Claims (33)

1. A combine harvester is characterized in that,

comprises a storage hopper having a storage space for storing grains subjected to threshing and a discharge part for discharging the grains below the storage space,

a fuel tank is provided in a region below the storage hopper in a state of overlapping with the storage hopper in a plan view.

2. A combine harvester according to claim 1,

the fuel tank projects rearward from a rear end of the storage hopper.

3. A combine harvester according to claim 1 or 2,

the fuel tank is provided at a position near one side of the storage hopper in the left-right direction of the machine body in a state of protruding from the rear end of the storage hopper to the rear side,

a working platform is arranged at the rear side of the storage hopper and at the other side of the left and right direction of the machine body.

4. A combine harvester according to claim 3,

a hopper supporting frame for supporting the storage hopper in the vertical direction is provided in a state of being erected from the body frame,

the work table is supported by the bucket support frame in a state of protruding rearward from a rear end portion of the bucket support frame.

5. A combine harvester according to claim 4,

the working table is arranged in a state of being separated upwards relative to the machine body frame,

the auxiliary machine for fuel is arranged between the operation platform and the machine body frame and acts on the fuel stored in the fuel tank.

6. A combine harvester according to any one of the claims 1-5,

a balance weight mounting portion is formed at a position of the machine body frame adjacent to a position where the fuel tank is supported in the left-right direction of the machine body.

7. A combine harvester according to any one of the claims 1-6,

a threshing device for threshing the harvested straws is equipped with the storage bin in a state of being arranged in the left and right direction of the machine body,

the fuel tank is provided in a region below the storage hopper at a position close to the threshing device in the left-right direction of the machine body and at a position on the rear side of the machine body in the front-rear direction of the machine body.

8. A combine harvester according to claim 7,

a hopper supporting frame for supporting the storage hopper in the vertical direction is provided in a state of being erected from the body frame,

the hopper supporting frame is provided with a plurality of supporting columns which are positioned on the threshing device side and positioned on the front side and the rear side,

the wall member is provided in a state of extending over the front pillar and the rear pillar and standing from the body frame,

the wiring or the piping or both pass through a region between the wall member and one of the threshing device and the fuel tank.

9. A combine harvester according to claim 8,

the wall member has an inclined surface portion which is inclined to be positioned on the threshing device side as the side of the wall member is positioned above the machine body when viewed in the front-rear direction, and a vertical surface portion which is continuous with the upper side of the inclined surface portion and extends upward,

a space through which the wiring or the piping or both of them pass is formed in an area surrounded by the inclined surface portion and the body frame.

10. A combine harvester according to claim 8 or 9,

a fuel assist device that acts on the fuel stored in the fuel tank, the fuel assist device being provided on a rear side of the rear pillar and on a side opposite to the threshing device in a right-left direction of the machine body with respect to the fuel tank,

the wiring or the piping or both are connected to the auxiliary fuel machine.

11. A harvester is characterized in that a harvester is provided,

comprises a threshing device, a storage hopper, a hopper supporting frame,

the threshing device is arranged in a state of deviating to one side of the left and right directions of the machine body to thresh the reaped straws,

the storage hopper is arranged in a state of being deviated to the other side of the left-right direction of the machine body and in a state of being transversely arranged with the threshing device, and is provided with a storage space for storing grains to be threshed and a discharge part which is arranged below the storage space and can discharge the grains,

the hopper supporting frame supports the storage hopper,

the hopper supporting frame is provided with a front vertical frame, a rear vertical frame, a front-rear direction frame, and a connecting frame,

the front vertical frame is erected from a body frame and supports a front portion of the storage hopper, the rear vertical frame is erected from the body frame and supports a rear portion of the storage hopper, the front-rear direction frame connects an upper portion of the front vertical frame and an upper portion of the rear vertical frame, and the coupling frame connects a front-rear intermediate portion of the front-rear direction frame and the threshing device.

12. A harvester as in claim 11,

the hopper support frame is provided with a front lateral frame extending from the upper part of the front vertical frame to the transverse outer side of the machine body and supporting the front part of the storage hopper, and a rear lateral frame extending from the upper part of the rear vertical frame to the transverse outer side of the machine body and supporting the rear part of the storage hopper,

the front-rear direction frame extends over a portion of the bucket support frame located on the side of the threshing device with respect to a front support portion of the front-side lateral frame that supports the storage bucket, and a portion of the bucket support frame located on the side of the threshing device with respect to a rear support portion of the rear-side lateral frame that supports the storage bucket.

13. A harvester as in claim 12,

the front lateral frame extends from the upper part of the front longitudinal frame to the threshing device and is supported by the threshing device,

the rear vertical frame is erected more to the rear side than the threshing device, and the rear horizontal frame is not extended to the threshing device side,

the connecting frame connects a rear portion of the front-rear direction frame and a rear portion of the threshing device.

14. A harvester as in claim 12 or 13,

the front-rear direction frame connects a connecting portion of the front vertical frame and the front lateral frame and a connecting portion of the rear vertical frame and the rear lateral frame.

15. A harvester according to any one of claims 12 to 14,

the upper end of the front vertical frame is connected to the lower surface of the front lateral frame, and the upper end of the rear vertical frame is connected to the lower surface of the rear lateral frame,

the front-rear direction frame is a plate-shaped frame connecting the upper surface portion of the front-side lateral frame and the upper surface portion of the rear-side lateral frame.

16. A harvester as in claim 15,

the connecting frame is a plate-shaped frame facing the front-rear facing frame.

17. A harvester as in claim 15 or 16,

includes a front bracket cantilevered rearward from the upper surface portion of the front lateral frame, a rear bracket cantilevered forward from the upper surface portion of the rear lateral frame,

the front-rear direction frame is supported by the upper surface portion of the front bracket, the upper surface portion of the connecting frame, and the upper surface portion of the rear bracket,

the end of the front and rear facing frames opposite to the threshing device is provided with a bent portion bent downward over the front and rear facing frames.

18. A harvester according to any one of claims 12 to 17,

comprises an engine disposed on the front side of the storage hopper, an exhaust pipe for discharging exhaust gas from the engine,

the front side horizontal frame extends from the upper part of the front vertical frame to the threshing device and is supported by the threshing device,

the exhaust pipe passes through a space between the threshing device and the storage hopper in a state of passing under a projecting portion of the front-side lateral frame projecting from the front-side longitudinal frame toward the threshing device and being supported by the projecting portion.

19. A harvester as in claim 18,

a cover body provided on the opposite side of the exhaust pipe from the threshing device in the left-right direction of the machine body and covering the exhaust pipe from the lateral outside of the machine body,

the cover is supported by the front portion of the front-rear facing frame.

20. A harvester according to any one of claims 11 to 19,

an illumination device for illuminating the working space below the storage bin is supported at the rear part of the front and rear facing frames in a state of being positioned between the threshing device and the storage bin.

21. A harvester according to any one of claims 11 to 20,

comprises a second front longitudinal frame, a second rear longitudinal frame and an operation clamping plate,

the second front vertical frame is erected from the machine body frame on the lateral outer side of the machine body than the front vertical frame, and supports the front part of the storage hopper,

the second rear vertical frame is erected from the machine body frame on the lateral outer side of the machine body than the rear vertical frame, and supports the rear part of the storage hopper,

the working clamp plate is provided at a position outside the machine body with respect to the second front vertical frame and the second rear vertical frame, and is swingably configured to be changed to a use state in which the working clamp plate is extended to the outside in the lateral direction of the machine body and a storage state in which the working clamp plate is stored to the inside in the lateral direction of the machine body,

the second rear vertical frame is disposed further toward the transverse inner side of the machine body than the second front vertical frame,

the work clamp plate extends in the front-rear direction of the machine body from a position corresponding to the second front vertical frame to a position behind a position corresponding to the second rear vertical frame.

22. A harvester as in claim 21,

a fuel tank is provided between the threshing device and the storage hopper,

the machine body frame is provided with a frame part which supports the rear vertical frame and protrudes from the threshing device to the rear side of the machine body,

the fuel tank is supported by the frame portion in a state of protruding from the rear vertical frame toward the rear side of the machine body and in a state of not protruding from the rear end portion of the frame portion toward the rear side of the machine body,

the work clamp plate is supported by the frame.

23. A harvester according to any one of claims 11 to 22,

a fuel tank is provided between the threshing device and the storage hopper in a state of protruding from the rear vertical frame to the rear side of the machine body,

a separator for separating impurities in the fuel is arranged in front of the fuel tank,

a partition plate provided on the opposite side of the fuel tank and the separator from the threshing device to partition a working space below the storage hopper and a space between the threshing device and the storage hopper,

an opening is formed in a portion of the partition plate adjacent to the spacer in the transverse direction of the machine body.

24. A harvester is characterized in that a harvester is provided,

comprises a storage hopper, a hopper supporting frame, a guide part and a buffer part,

the storage hopper has a storage space for storing grains to be subjected to threshing and a discharge part provided below the storage space and capable of discharging the grains,

the bin supporting frame is vertically arranged on the machine frame and supports the storage bin,

the guide portion is supported by the bucket support frame so as to be swingable up and down into a use state in which the guide portion is capable of extending from the storage bucket to the outside in the lateral direction of the machine body to receive the body of the operator and a storage state in which the guide portion is capable of retracting to the inside in the lateral direction of the machine body,

the buffer member is mounted on the guide part in a manner of wrapping the guide part,

the guide portion includes a backrest portion which is positioned on a back side facing an operator of the storage bucket in the use state and is linear, a first arm portion which extends from one end portion of the backrest portion in an extending direction to one end portion of the bucket support frame and is swingably supported by the one end portion, and a second arm portion which extends from the other end portion of the backrest portion in the extending direction to the other end portion of the bucket support frame and is swingably supported by the other end portion,

the cushion member is attached to the backrest portion,

the guide portion is configured by connecting a plurality of divided bodies, and the boundary of the plurality of divided bodies is positioned in the backrest portion.

25. A harvester as in claim 24,

an L-shaped member formed integrally with the backrest portion and one of the one arm portion and the other arm portion,

the plurality of divided bodies include the L-shaped member and the other of the one arm portion and the other arm portion,

the other of the one arm portion and the other arm portion and the L-shaped member are connected to each other by inserting a free end portion of the backrest portion into a free end portion of the other of the one arm portion and the other arm portion to hold the position.

26. A harvester as in claim 25,

the guiding part is configured that the backrest part extends in the front-back direction at the lateral outer side of the machine body of the storage bin in the using state, and the one side arm part is positioned at the front side of the other side arm part,

the L-shaped member is composed of the other side arm portion and the backrest portion.

27. A harvester as in claim 24,

the plurality of divided bodies include a first L-shaped member composed of a first side portion positioned on the side of the first side arm of the backrest portion and the first side arm, and a second L-shaped member composed of a second side portion positioned on the side of the second side arm of the backrest portion and the second side arm,

the one-side L-shaped member and the other-side L-shaped member are coupled to each other by being held in a state where a free end portion of the one-side portion and a free end portion of the other-side portion are opposed to each other.

28. A harvester as in claim 24,

the plurality of divided bodies include the backrest part, the one side arm part, and the other side arm part,

the one-side arm portion and the backrest portion are connected by holding the end portion of the backrest portion located on the one-side arm portion side in a state of being inserted into the free end portion of the one-side arm portion,

the other side arm portion and the backrest portion are connected to each other by inserting an end portion of the backrest portion located on the other side arm portion side into a free end portion of the other side arm portion to hold the other side arm portion and the backrest portion in position.

29. A harvester according to any one of claims 24 to 28,

the use state and the storage state are set at positions on both sides of a position directly above a swing fulcrum of the guide portion.

30. A harvester according to any one of claims 24 to 29,

the guiding part is configured to make the backrest part approach the storage hopper when in the accommodating state,

and a holding mechanism provided in the storage hopper for holding the position of the backrest in the storage state.

31. A harvester as in claim 30,

the holding mechanism includes an accommodating section for accommodating a part of the backrest section, and a resilient section for applying a biasing force for urging the backrest section accommodated in the accommodating section toward the use state,

the receiving part is provided with an inlet part which is set smaller than the cross-sectional shape of the backrest part and elastically deforms to widen due to the passage of the backrest part to allow the backrest part to move in and out of the receiving part,

the rebounding portion is configured to be pushed toward the inlet portion by the biasing force while maintaining a state in which the backrest portion is accommodated in the accommodating portion.

32. A harvester as in claim 30 or 31,

the holding mechanism is configured to be capable of holding a position of an end portion side portion of the backrest portion located on one side in the extending direction,

the hopper support frame is provided with a locking device capable of fixedly connecting end part side parts of the one side arm part and the other side arm part on the other side in the extending direction with the hopper support frame.

33. A harvester according to any one of claims 24 to 32,

an operation clamping plate is arranged at the position outside the machine body compared with the storage hopper,

in the use state, the outer side of the guiding part is inclined in a descending manner, and the backrest part protrudes to the lateral outer side of the machine body than the outer side end part of the working clamping plate.

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