JP2021003012A - Harvester - Google Patents

Abstract

To constitute a harvester so that a canopy in a use state is hardly affected by strong wind, in the case where the canopy is provided as a sunshade for an operator riding on a work table, in the harvester in which a grain hopper is provided.SOLUTION: A canopy 54 is provided whose state can be changed by swaying between a use state B1 protruding to the lateral outside with respect to a grain hopper 5 and positioned on the upper side with respect to a work table, and a stored stated positioned on the upper side with respect to the grain hopper 5. A first locking part 63 provided at a member of a canopy 54 and a second locking part 61d provided at a member of the grain hopper 5 are provided. By the canopy 54 being operated into the use state B1 and connection members 64, 65, 66 being mounted across the first locking part 63 and the second locking part 61d, the canopy 54 can be held in the use state B1.SELECTED DRAWING: Figure 15

Description

The present invention relates to a harvester provided with a grain hopper for storing threshed grains.

An example of a harvester provided with a grain hopper is disclosed in Patent Document 1.
In Patent Document 1, a workbench is provided so as to project laterally outward from a position below the grain hopper, and a worker on the workbench can use the grain hopper as the harvesting work progresses. The grains supplied to the stakes are taken out from the discharge part at the bottom of the grain hopper and packed in a bag.

In Patent Document 1, a canopy is provided as a shade for workers on the workbench, and the canopy projects laterally outward with respect to the grain hopper and is located above the workbench. , It is configured to swing and change its state over the stored state located above the grain hopper.

Japanese Unexamined Patent Publication No. 2019-4766 (see FIGS. 2, 4 and 6)

Since the canopy has a function as a awning and has a relatively large area, the canopy in the used state may be switched to the stored state due to a strong wind.

The present invention is configured such that when a harvester provided with a grain hopper is provided with a canopy as a shade for workers on a workbench, the canopy in use is not easily affected by strong winds. I am aiming.

The harvester of the present invention stores the threshed grains, and has a grain hopper having a grain discharge portion at the bottom and a grain hopper that projects laterally outward from a position below the grain hopper. The work table on which the worker is boarded, the usage state in which the worker projects laterally outward with respect to the grain hopper and is located above the work table, and the work table is located above the grain hopper. A canopy that swings and changes its state over the stored state is provided, and a first locking portion provided on the member of the canopy and a second locking portion provided on the member of the grain hopper. The canopy can be held in the used state by operating the canopy in the used state and attaching a connecting member over the first locking portion and the second locking portion. is there.

According to the present invention, when the worker gets on the workbench to perform the work, the canopy may be operated in the used state, and then the worker brings the connecting member installed in the harvester and the worker. The canopy can be held in a used state by attaching the connecting member to the first locking portion and the second locking portion.
As a result, it is possible to prevent the canopy operated in the used state from being switched to the stored state due to the strong wind, and the workability on the workbench is improved.

In the present invention, the grain hopper is provided with a support member for swingably supporting the canopy, the first locking portion is provided on the frame of the canopy, and the second locking portion is provided. However, it is preferable that the support member is provided.

According to the present invention, the canopy is swingably supported by a support member provided on the grain hopper, and the frame of the canopy and the support member are in a state close to each other.
As a result, when the connecting member is attached to the first locking portion provided on the frame of the canopy and the second locking portion provided on the support member, the connecting member may be relatively small. Therefore, it is advantageous in terms of simplification and handling of the linking member.

In the present invention, a contact member having a flat surface portion is provided on the frame, a receiving portion having a flat surface portion is provided on the support member, and in the used state, the flat surface portion of the contact member and the flat surface of the receiving portion. It is preferable that the surface contact with the portion prevents the canopy from swinging downward beyond the used state.

According to the present invention, when the canopy is operated in the used state, in addition to the connecting function by the connecting member, the contact member and the receiving portion exert the function of preventing the canopy from swinging downward, so that the canopy is used. It will be stably held in the state.

According to the present invention, when the contact member and the receiving portion exert a function of preventing the canopy from swinging downward in the used state, the flat surface portion of the contact member and the flat surface portion of the receiving portion come into surface contact with each other. Since stress concentration in the contact member and the receiving portion can be avoided, it is advantageous in terms of improving the durability of the contact member and the receiving portion.

In the present invention, the first locking portion is the contact member, the second locking portion is the receiving portion, and the connecting member is attached across the contact member and the receiving portion. Therefore, it is preferable that the canopy can be maintained in the used state.

If the contact member and the receiving portion come into contact with each other in the used state, the contact member and the receiving portion are in close contact with each other.
According to the present invention, when the canopy is operated in the used state, the connecting member is attached over the contact member and the receiving portion, so that the connecting member can be relatively small, and the linking member can be simplified. It is advantageous in terms of handling.

In the present invention, it is preferable that the support member is provided with a holding portion capable of holding the removed connecting member.

According to the present invention, since the operator can hold the connecting member in the holding portion of the supporting member after removing the connecting member, the operator is less likely to lose the connecting member.
According to the present invention, if the connecting member is held by the holding portion of the supporting member, the connecting member is in a state close to the first locking portion and the second locking portion. As a result, the operator can easily take out the connecting member from the holding portion of the support member and attach the connecting member over the first locking portion and the second locking portion.

In the present invention, the first locking portion is provided on the frame of the canopy, and the second locking portion can project laterally outward with respect to the grain hopper to receive the worker of the workbench. It is preferable that the guard portion is provided.

In a harvester provided with a grain hopper and a workbench, a guard portion is often provided so as to project laterally outward to the grain hopper and receive a worker on the workbench.
According to the present invention, since the second locking portion is provided on the guard portion which is an existing member of the grain hopper, the guard portion can also be used for holding the canopy in the used state, and the structure is simplified. It is advantageous in terms of conversion.

In the present invention, the first locking portion is provided at the free end portion of the frame, and the second locking portion is lateral to the first locking portion in the plan view of the guard portion. It is preferable that it is provided on the outer portion.

According to the present invention, in the frame of the canopy, the connecting member is attached to the first locking portion of the free end portion, which is a portion far from the swing fulcrum of the canopy, so that the canopy is stably held in the used state. become.

When the connecting member extends downward in the vertical direction from the first locking portion to the second locking portion and is in a right-angled posture with respect to the canopy, the canopy receives a strong wind and is retracted from the used state. When an attempt is made to swing upward toward the canopy, the moving direction of the free end portion (first locking portion) of the canopy frame and the extending direction of the connecting member are substantially the same, and the load from the canopy is approximately the same. It may hang on the connecting member as it is.

According to the present invention, since the second locking portion is provided on the laterally outer portion of the guard portion in the plan view from the first locking portion, the connecting member is provided on the first locking portion and the second locking portion. In the state of being attached to the canopy, the connecting member extends from the first locking portion to the lateral outer side of the diagonally lower side toward the second locking portion, and is in an inclined posture with respect to the canopy.

As a result, when the canopy receives a strong wind and tries to swing upward from the used state to the retracted state, the connecting member is connected with respect to the moving direction of the free end portion (first locking portion) of the canopy frame. Since the extending direction is inclined, the connecting member is hung in a state where the load from the canopy is reduced, which is advantageous in terms of improving the durability of the connecting member.

In the present invention, it is preferable that the connecting member is connected to one of the first locking portion and the second locking portion.

According to the present invention, when the operator removes the connecting member, the connecting member remains connected to the first locking portion or the second locking portion, so that the operator engages the connecting member in the first position. It will not be lost by removing it from both the stop and the second locking part.

It is a right side view of the combine. It is a top view of the combine. It is a right side view near the grain hopper. It is a rear view of the vicinity of a grain hopper. It is an exploded perspective view near the grain hopper. It is a top view of the guard part. It is sectional drawing of the connection part of the 1st frame and 2nd frame in a guard part. It is a cross-sectional plan view of a grain hopper. It is a longitudinal front view of the upper part of a grain hopper. It is a top view of a grain hopper and a canopy. It is the figure which looked at the inner surface (lower surface) near the ceiling liner of the ceiling part of the grain hopper from the lower side. It is a side view of a vertical wall liner. It is a rear view of a vertical wall liner. It is a perspective view of the vicinity of the throwing part of a transport device. It is a perspective view near the canopy. It is a vertical sectional rear view in the vicinity of a canopy and a support member. It is a rear view of the vicinity of a canopy in the second alternative embodiment of the invention.

1 to 17 show a conventional combine harvester for rice, which is an example of a harvester. In FIGS. 1 to 17, F indicates a forward direction, B indicates a backward direction, and U indicates an upper direction. Indicates a direction, D indicates a downward direction, R indicates a right direction, and L indicates a left direction.

(Overall composition of combine harvester)
As shown in FIGS. 1 and 2, the machine body 1 is supported by the right and left crawler type traveling devices 2, and the driving unit 3 is provided on the right side of the front part of the machine body 1, and the threshing device 4 Is provided on the left side of the rear part of the machine body 1, and the grain hopper 5 is provided on the right part of the rear part of the machine body 1. The feeder 6 is connected to the front portion of the threshing device 4 and extends to the front side, and the cutting portion 7 is connected to the front portion of the feeder 6.

The combine is configured by the above configuration, and the crops in the field are cut by the cutting unit 7, transported through the feeder 6 and supplied to the threshing device 4, and the threshing process is performed by the threshing device 4. The grains are charged into the grain hopper 5.

(Structure that supports the grain hopper)
As shown in FIGS. 1, 3, 4 and 5, the workbench 8 is connected to the right part of the rear part of the machine body 1, and the four support frames 9 are connected to the front part and the rear part of the workbench 8. It extends upward. The front and rear lateral frames 10 are connected along the left-right direction over the upper part of the front support frame 9, and are connected along the left-right direction over the upper part of the rear support frame 9.

The handrail frame 11 is connected in the front-rear direction over the right portion of the front and rear horizontal frames 10, and the vertical frame 12 is connected in the front-rear direction over the left portion of the front and rear horizontal frames 10. It is connected along. The support frame 13 is connected to the right vertical wall portion of the threshing device 4 and the vertical frame 12.

The front and rear support brackets 14 are connected to the front and rear lateral frames 10, the grain hopper 5 is connected to the support bracket 14, and the grain hopper 5 is supported by the machine body 1 via the support frame 9. Has been done.

(Composition of grain hopper)
As shown in FIGS. 3, 4 and 5, the grain hopper 5 is formed in a box shape by combining plate materials, and has a right vertical wall portion 15, a left vertical wall portion 16, and a front vertical wall portion 17. It has a rear vertical wall portion 18, a ceiling portion 19, a funnel portion 20, and the like.

An inclined wall portion 21 that descends from the ceiling portion 19 toward the upper end portion of the vertical wall portion 15 is provided over the ceiling portion 19 and the upper end portion of the vertical wall portion 15, and the ceiling portion 19 is provided with grains by bolts. It is removable to the grain hopper 5.

As shown in FIGS. 5, 9 and 10, the ceiling portion 19 has a rectangular flat plate shape in a plan view, and the four edges are pushed and bent upward to form reinforcing ribs 19a and 19b. ing. On the upper surface of the ceiling portion 19, elongated flat plate-shaped reinforcing members 22 and 23 are connected along the left-right direction over the ribs 19a and 19b of the ceiling portion 19 from the central portion to the front side portion in the front-rear direction of the ceiling portion 19. Has been done.

On the upper surface of the ceiling portion 19, an elongated flat plate-shaped reinforcing member 24 is connected along the left-right direction over the ribs 19a and 19b of the ceiling portion 19 from the central portion to the rear portion of the ceiling portion 19 in the front-rear direction. ing. A thin rubber plate-shaped receiving member 25 is attached to the upper surfaces of the reinforcing members 23 and 24.

As shown in FIGS. 3, 5 and 8, three funnel portions 20 having a narrowed lower portion are connected to the lower end portions of the vertical wall portions 15 to 17. A square tubular discharge portion 26 is connected downward to the lower part of the funnel portion 20, and a shutter 27 capable of manually opening and closing the discharge portion 26 is provided in the discharge portion 26. An observation window 28 that allows the inside of the grain hopper 5 to be visually recognized from the outside is provided at a portion of the vertical wall portion 15 located above the rearmost funnel portion 20.

As shown in FIGS. 1 and 2, the support frame 29 is connected to the vertical wall portion 17 and extends to the front side, and the operation unit canopy 30 as a shade covering the upper side of the operation unit 3 is the support frame 29. Is supported by.

(Structure of a transport device that feeds grains from the threshing device into the grain hopper)
As shown in FIGS. 1, 2 and 4, a transport device 31 is provided over the lower portion of the threshing device 4 and the grain hopper 5, and the grains that have been threshed by the threshing device 4 are transferred to the transport device 31. It is transported by, thrown from the transport device 31, and thrown into the grain hopper 5. The transport device 31 has a transport unit 32 connected to the outlet of the grain in the lower part of the threshing device 4 and extended upward, a throwing unit 33 connected to the upper end of the transport unit 32, and the like.

As shown in FIGS. 8 and 9, the transport portion 32 has a round pipe shape, the transport shaft 34 is arranged inside the transport portion 32, and the spiral transport body 35 is connected to the transport shaft 34. .. By rotationally driving the transport shaft 34 around the shaft core P1 along the vertical direction in the clockwise direction of FIG. 8, the grains supplied from the outlet of the lower part of the threshing device 4 to the lower part of the transport unit 32 are transported. The inside of the transport unit 32 is transported upward on the 35.

In the grain hopper 5, an opening 16a is opened in a portion of the vertical wall portion 16 located above the frontmost funnel portion 20. The transport shaft 34 extends upward so as to enter the throwing portion 33.

The throwing portion 33 has a blade member 36 which is connected to the upper end portion of the transport shaft 34 and is rotationally driven around the shaft core P1 integrally with the transport shaft 34, a case 37 which covers the outside of the blade member 36, and the like. The case 37 is connected to the opening 16a of the vertical wall portion 16. As a result, the grain throwing portion 33 of the transport device 31 is provided on the vertical wall portion 16 of one of the plurality of vertical wall portions 15 to 18 of the grain hopper 5.

When the grains are carried upward on the transport body 35 inside the transport portion 32 and reach the throwing portion 33, the grains are driven by the blade member 36 which is rotationally driven clockwise around the axis P1. The grains are thrown into the grain hopper 5 and thrown into each region of the three funnel portions 20 in the grain hopper 5.

(Arrangement of vertical wall liners provided on the vertical wall of the grain hopper)
A removable vertical wall liner 38 is provided on the inner surface of the grain hopper 5 at a portion located at the throwing destination of the grains thrown by the throwing unit 33 of the transport device 31 as described below. ..

As shown in FIGS. 8 and 9, a vertical wall liner is formed on the inner surface of the vertical wall portion 15 facing the throwing portion 33 and the inner surface of the inclined wall portion 21 of the plurality of vertical wall portions 15 to 18 of the grain hopper 5. 38 is provided.

The vertical wall liner 38 extends over a portion facing the throwing portion 33 on the inner surface of the vertical wall portion 15 in the left-right direction and a portion facing the throwing portion 33 on the inner surface of the inclined wall portion 21 in the left-right direction in a plan view. It is provided.

The vertical wall liner 38 extends over the uppermost portion of the frontmost funnel portion 20 on the inner surface of the vertical wall portion 16 and the upper portion of the funnel portion 20 in the front-rear intermediate portion on the inner surface of the vertical wall portion 16 in a plan view. It is provided. The vertical wall liner 38 is provided at a position at the same height as the throwing portion 33 on the inner surface of the vertical wall portion 15 and the inner surface of the inclined wall portion 21 when viewed from the front.
With the above configuration, the vertical wall liner 38 is provided at a position facing the throwing portion 33 on the inner surface of the vertical wall portion 16 facing the throwing portion 33 and the inner surface of the inclined wall portion 21.

(Specific configuration of the vertical wall liner provided on the vertical wall of the grain hopper)
As shown in FIGS. 9, 12 and 13, the vertical wall liner 38 is formed in a flat plate shape by a material having sufficient wear resistance. The vertical wall liner 38 is formed by being bent so as to have a portion 38a along the inner surface of the inclined wall portion 21 and a portion 38b along the inner surface of the vertical wall portion 15 facing the throwing portion 33. An opening 38c for mounting is opened in the portion 38a of the 38.

The bolt 42 is connected to the inclined wall portion 21 and projects inward of the inclined wall portion 21, the bolt 42 is inserted into the opening 38c of the vertical wall liner 38, and a nut is tightened to the bolt 42.

The vertical wall liner 38 is detachably attached only to the inner surface of the inclined wall portion 21, is not connected to the inner surface of the vertical wall portion 15, and is attached to the inner surface of the inclined wall portion 21 and the inner surface of the vertical wall portion 15. It is arranged over. The vertical wall liner 38 is removable by removing the nut from the bolt 42, and can be replaced with a new vertical wall liner 38.

As shown in FIG. 4, in the grain hopper 5, attention is paid to the inner surface angle A1 formed by the inner surface of the inclined wall portion 21 and the inner surface of the vertical wall portion 15 facing the throwing portion 33.
As shown in FIG. 13, in the vertical wall liner 38 before being attached, a portion 38a along the inner surface of the inclined wall portion 21 of the vertical wall liner 38 and a portion 38b along the inner surface of the vertical wall portion 15 facing the throwing portion 33. Pay attention to the liner angle A2 formed by.

The vertical wall liner 38 is formed so that the liner angle A2 is slightly larger than the inner surface angle A1 in the state before the vertical wall liner 38 is attached.
As shown in FIG. 9, the portion 38a of the vertical wall liner 38 is attached to the inner surface of the inclined wall portion 21 while the vertical wall liner 38 is elastically deformed so that the liner angle A2 is the same as the inner surface angle A1. The portion 38b of the vertical wall liner 38 is pressed against the inner surface of the vertical wall portion 15 by the elasticity of the vertical wall liner 38 and is in close contact with the vertical wall liner 38.

(Arrangement and specific configuration of the ceiling liner provided on the ceiling of the grain hopper)
A removable ceiling liner 39 is provided on the inner surface of the grain hopper 5 at a portion located at the throwing destination of the grains thrown by the throwing unit 33 of the transport device 31 as described below.

As shown in FIGS. 8 and 9, a ceiling liner 39 is provided on the inner surface of the ceiling portion 19 in a portion between the throwing portion 33 and the vertical wall liner 38 in a plan view. The portion of the inner surface of the ceiling portion 19 provided with the ceiling liner 39 is a portion facing the throwing portion 33 in a plan view. The end 39a of the ceiling liner 39 on the opposite side of the throwing portion 33 extends downward from the inner surface of the ceiling portion 19.

The ceiling liner 39 is attached to the inner surface of the ceiling portion 19 by bolts 43. The ceiling liner 39 can be attached and detached by removing the bolt 43, and can be replaced with a new ceiling liner 39.

As shown in FIGS. 9, 10 and 11, the reinforcing members 22 and 23 are connected to the upper surface of the portion of the ceiling portion 19 where the ceiling liner 39 is provided (see the above-mentioned (configuration of the grain hopper)). In a plan view, the ceiling liner 39 and the reinforcing members 22 and 23 overlap. As a result, the ceiling liner 39 is provided on the inner surface of the ceiling portion 19 at the positions of the reinforcing members 22 and 23.

(Structure of wear prevention member provided inside the case of the throwing part)
As shown in FIGS. 8 and 14, an anti-wear member 40 having sufficient wear resistance is attached to the inner surface of the case 37 by bolts 41. The wear prevention member 40 can be attached and detached by removing the bolt 41, and can be replaced with a new wear prevention member 40.

The wear prevention member 40 is formed in an arc shape along the inner surface of the case 37. The upper portion of the wear prevention member 40 on the lower side in the rotation direction of the blade member 36 is a guide portion 40a that guides the grains thrown by the blade member 36 toward the vertical wall liner 38 and the ceiling liner 39.

The lower part of the lower portion of the wear prevention member 40 on the lower side in the rotation direction is cantilevered, and the extended portion causes the grains thrown by the blade member 36 to be thrown in the grain hopper 5. A guide portion 40b that guides the vertical wall liner 38 to a region laterally separated from the vertical wall liner 38.
The vertical width W1 of the guide portion 40a of the wear prevention member 40 is set to be slightly larger than the vertical width W2 of the guide portion 40b of the wear prevention member 40.

With the above configuration, as shown in FIG. 8, the grains thrown by the upper part of the blade member 36 are guided by the guide portion 40a of the wear prevention member 40, and mainly the vertical wall portion facing the throwing portion 33. It is thrown toward the 15 and the inclined wall portion 21, and is thrown toward the vertical wall liner 38 and the ceiling liner 39, and is mainly thrown into the area of the frontmost funnel portion 20.

When there is a grain thrown toward the inclined wall portion 21 along the inner surface of the ceiling liner 39, the grain hits the end portion 39a of the ceiling liner 39 and is guided downward as shown in FIG. As a result, grains are prevented from entering the gap formed between the portion of the ceiling portion 19 on the opposite side of the throwing portion 33 and the inclined wall portion 21.

The grains thrown by the lower portion of the blade member 36 are guided by the guide portion 40b of the wear prevention member 40, and are mainly directed to a region of the grain hopper 5 that is laterally separated from the vertical wall liner 38. It is thrown mainly into the area of the funnel portion 20 in the middle front and rear and the region of the funnel portion 20 on the rearmost side.

(Structure related to bagging work)
As described above, as the grains are put into the grain hopper 5, a bagging operation is performed in which the grains are taken out from the discharge unit 26 of the grain hopper 5 and packed in a bag.

As shown in FIGS. 3 and 4, the support frame 44 is connected along the front-rear direction over the left front and left rear support frames 9, and a plurality of rod-shaped bag support members 45 are connected to the support frame 44. It is connected and extends cantilevered to the right lateral outside.

A workbench 46 on which an operator can board is supported so as to be swingable around an axis P2 along the front-rear direction of the right portion of the machine body 1, and the workbench 46 is on the lower side with respect to the grain hopper 5. It can be operated from the position of (see the solid line in FIG. 4) and the upward storage position (see the broken line in FIG. 4).

As shown in FIGS. 1, 2, 3 and 4, the guard portion 47 is attached to the support frame 9 so as to be located above the workbench 46. A canopy 54 as a shade for workers on the workbench 46 is supported by the grain hopper 5.

The worker who got on the workbench 46 attached a large number of empty bags (not shown) to the bag support member 45, and placed them on the back side (threshing device 4 side) with respect to the discharge portion 26 of the grain hopper 5. Once in position, one bag is moved along the bag support member 45 to insert the discharge portion 26 of the grain hopper 5 into the opening portion of the bag.

In the above-mentioned state, the operator opens the shutter 27 to put the grains of the grain hopper 5 into the bag from the discharge unit 26. When the bag is full, the operator closes the shutter 27, closes the opening of the bag, removes the full bag from the bag support member 45, and releases the full bag to the field. The operator moves the next empty bag along the bag support member 45, inserts the discharge portion 26 of the grain hopper 5 into the opening portion of the bag, and repeats the above operation.

In the above bagging work, the worker can stabilize his / her body by touching the waist portion to the guard portion 47 or holding the handrail frame 11, and the canopy 54 can avoid the sunlight. ..

(Composition of canopy)
As shown in FIGS. 9, 10 and 15, the canopy 54 extends over the first frame 55 (corresponding to a frame) formed in a channel shape in a plan view, the front end portion and the rear end portion of the first frame 55. The second frame 56, the first frame 55, and the two third frames 57, which are connected to the first frame 56, and the handle portions 58, the first, and second frames, which are connected to the third frame 57. , 3 It has a canvas 59 and the like attached over 55, 56, 57 of the frame.

As shown in FIGS. 9, 10, 15 and 16, in the grain hopper 5, the front support member 60 and the rear support member 61 are connected to the front portion and the rear portion of the inclined wall portion 21.
The front and rear support members 60 and 61 are laterally connected to the substrate portions 60a and 61a bolted to the inclined wall portion 21, the support portions 60b and 61b connected to the substrate portions 60a and 61a, and the support portions 60b and 61b. It has the boss portions 60c and 61c, and the receiving portions 60d and 61d (corresponding to the second locking portion) connected to the substrate portions 60a and 61a and the support portions 60b and 61b.

In the canopy 54, the front end portion and the rear end portion of the first frame 55 are formed sideways to form the front shaft portion 55a and the rear shaft portion 55b. The front shaft portion 55a and the rear shaft portion 55b of the first frame 55 are inserted into the boss portions 60c and 61c of the front and rear support members 60 and 61, and the canopy 54 has a shaft core along the front-rear direction. It is supported by the front and rear support members 60 and 61 so as to be swingable around P3.

As a result, the canopy 54 projects to the lateral outer side on the right side of the grain hopper 5 and is located on the upper side of the workbench 46 with respect to the usage state B1 (see FIGS. 4, 10 and 15) and the grain hopper 5. The state can be changed by swinging over the stored state B2 (see FIG. 9) located on the upper side. The operator of the workbench 46 can operate the canopy 54 into the used state B1 and the stored state B2 by holding the handle portion 58.

As shown in FIG. 9, when the canopy 54 is operated to the retracted state B2, the top portion 57a of the third frame 57 is the receiving member 25 of the reinforcing members 23 and 24 of the ceiling portion 19 in the grain hopper 5 (described above). (See (Structure of grain hopper)) from above.
This prevents damage to the reinforcing members 23 and 24 and damage to the third frame 57 of the canopy 54 and the canvas 59.

(Configuration to hold the canopy in use)
As shown in FIGS. 9, 10, 15 and 16, in the canopy 54, the front and rear shaft portions 55a and the rear shaft portion 55b of the first frame 55 have flat plate-shaped front and rear contact members 63 (first locking portions). Is connected so as to face the receiving portions 60d and 61d of the support members 60 and 61.

The portions of the front and rear contact members 63 facing the receiving portions 60d and 61d of the support members 60 and 61 are formed on the flat surface portion. A connecting hole 63a is opened in the later contact member 63.

Since the receiving portions 60d and 61d of the supporting members 60 and 61 are formed by bending the plate material, the portions of the receiving portions 60d and 61d of the supporting members 60 and 61 facing the contact member 63 are formed on the flat surface portion. ing.

In the receiving portion 61d of the rear support member 61, the connecting hole 61e is opened at a position facing the connecting hole 63a of the rear contact member 63, and the holding hole 61f (holding) is formed in the lower portion of the connecting hole 61e. (Corresponding to the part) is open.

A connecting pin 64 with a head (corresponding to a connecting member) is prepared. When the canopy 54 is operated in the retracted state B2, as shown in FIG. 9, the connecting pin 64 is inserted into the holding hole 61f of the support member 61 later, and the washer 65 (corresponding to the connecting member) and the retaining member are prevented from coming off. The connecting pin 64 (corresponding to the connecting member) is attached to the pin 66, and the connecting pin 64 does not come off from the holding hole 61f of the support member 61 later.

As shown in FIGS. 9 to 10, 15 and 16, when the canopy 54 is operated in the used state B1, the flat surface portion of the front and rear contact members 63 and the receiving portion of the front and rear support members 60 and 61 The flat surfaces of the 60d and 61d come into surface contact with each other, and the canopy 54 is stopped from swinging downward beyond the used state B1.

When the operator holds the canopy 54 in the operating state B1, the operator removes the retaining pin 66 from the connecting pin 64 shown in FIG. 9 after operating the canopy 54 in the operating state B1, and removes the connecting pin 64 and the washer. The 65 and the retaining pin 66 are removed from the holding hole 61f of the subsequent support member 61.

Next, as shown in FIGS. 15 and 16, the operator attaches and removes the removed connecting pin 64 over the connecting hole 63a of the rear contact member 63 and the connecting hole 61e of the rear support member 61. The washer 65 and the retaining pin 66 are attached to the connecting pin 64.
As a result, the connecting pin 64 is attached over the rear contact member 63 and the receiving portion 61d of the rear support member 61, and the canopy 54 is held by the connecting pin 64 in the used state B1.

When the operator releases the holding of the canopy 54 in the used state B1, the operator attaches the connecting pin 64, the washer 65, and the retaining pin 66 to the subsequent contact member 63 and, as shown in FIGS. 16 to 9. The connecting pin 64, washer 65, and retaining pin 66, which are removed from the receiving portion 61d of the rear support member 61, are attached to the holding hole 61f of the rear support member 61.

(Structure of guard part)
As shown in FIGS. 4, 5 and 6, the guard portion 47 includes a first frame 48 in which the round pipe material is formed in an angle shape in a plan view, a second frame 49 of the square pipe material, a plurality of cushion members 50, and the like. Have.

Three cylindrical cushion members 50 are inserted and attached to the long portion of the first frame 48, and one cylindrical cushion member 50 is inserted and attached to the short portion at the rear of the first frame 48. Is attached.

As shown in FIG. 7, at the connecting portion between the first frame 48 and the second frame 49, the end portion of the first frame 48 is inserted into the opening 49a of the second frame 49, and the washer 51 is the first frame. It is attached to the end of 48. A spring pin 52 having a C-shaped cross section is inserted into a through hole 48a at the end of the first frame 48 to prevent the first frame 48 from coming off from the opening 49a of the second frame 49.

A spring pin 53 having a diameter smaller than that of the spring pin 52 is inserted into the spring pin 52, and the spring pin 53 tries to push the spring pin 52 from the inside to the outside. The spring pin 53 is inserted into the spring pin 52 so that the opening of the spring pin 52 and the opening of the spring pin 53 are arranged at opposite positions.

As a result, in addition to the elastic force of the spring pin 52 itself, the outer surface of the spring pin 53 is strongly pressed against the inner surface of the through hole 48a of the first frame 48 by the expanding action of the spring pin 53, and the spring pin 53 is pressed. It is difficult to pull out from the through hole 48a of the first frame 48.

As shown in FIGS. 4 and 5, the guard portion 47 is supported so as to be swingable up and down around the axis P3 along the front-rear direction of the front and rear horizontal frames 10, and is to the right of the horizontal frame 10. It can be operated over the use position (see the solid line in FIG. 4) and the upward storage position (see the broken line in FIG. 4) overhanging laterally.

A receiving portion 10a is provided on the horizontal frame 10. At the used position, the guard portion 47 is held at the used position by the first frame 48 and the second frame 49 riding on the receiving portion 10a of the horizontal frame 10.

As shown in FIGS. 4 and 15, the holding member 62 formed by bending the spring plate material is attached to the receiving portion 60d of the front support member 60. At the storage position, the guard portion 47 is held at the storage position by inserting the first frame 48 into the holding member 62.

(First alternative form of carrying out the invention)
The connecting pin 64, washer 65 and retaining pin 66 shown in FIGS. 9, 15 and 16, the connecting hole 63a of the rear contact member 63, the connecting hole 61e and the holding hole 61f of the rear support member 61 are the front contact member 63. And may be provided on the front support member 60, and may be provided on the front and rear contact members 63 and the front and rear support members 60 and 61.

The canopy 54 is shaken over the used state B1 and the stored state B2 on a support frame (not shown) (corresponding to a member of the grain hopper 5) extending upward from the support frame 9 that supports the grain hopper 5. It may be movably supported.

(Second alternative form of carrying out the invention)
The configuration for holding the canopy 54 in the usage state B1 may be configured as follows.
As shown in FIG. 17, a belt member 67 (corresponding to a connecting member) that can be expanded and contracted and has elasticity such as a rubber belt is prepared, and a metal hook portion 67a is attached to an end portion of the belt member 67. There is.

In the first frame 55 of the canopy 54, the hook on the belt member 67 is attached to the free end portion 55c (corresponding to the first locking portion) which is the opposite end of the shaft portions 55a and 55b (see FIGS. 9 and 10). The opposite side of the portion 67a is connected.

In the first frame 48 of the guard portion 47 (corresponding to the member of the grain hopper 5), when focusing on the free end portion 48b (corresponding to the second locking portion) which is the opposite end of the shaft core P4, the canopy When the 54 is operated to the used state B1 and the guard portion 47 is operated to the used position, the free end portion 48b of the first frame 48 of the guard portion 47 is viewed from the plan view and the rear view, and the first frame of the canopy 54 is operated. It is located on the lateral outer side on the right side of the free end portion 55c of 55.

After operating the canopy 54 to the operating state B1, the operator hangs the hook portion 67a of the belt member 67 on the free end portion 48b of the first frame 48 of the guard portion 47 while slightly stretching the belt member 67 to belt the belt. The member 67 is attached over the canopy 54 and the guard portion 47.

In this case, the hook portion 67a of the belt member 67 is hung on a portion between the adjacent cushion members 50 at the free end portion 48b of the first frame 48 of the guard portion 47, or a connecting hole opened in this portion ( (Not shown).

When the belt member 67 is attached over the canopy 54 and the guard portion 47, the belt member 67 is viewed from the rear view from the free end portion 55c of the first frame 55 of the canopy 54 to the first frame 48 of the guard portion 47. The belt member 67 extends diagonally downward to the lateral side toward the free end portion 48b, and the belt member 67 is in an inclined posture with respect to the canopy 54 in a side view.

As a result, the guard portion 47 is maintained at the used position due to the weight of the guard portion 47, the frictional resistance at the shaft core P4, and the like, so that the canopy 54 is held in the used state B1 via the belt member 67. In this case, if a lock mechanism (not shown) capable of fixing the guard portion 47 at the use position is provided, the canopy 54 can be reliably held in the use state B1.

(Third alternative form of carrying out the invention)
In the above-mentioned (second alternative form of carrying out the invention), it may be configured as described below.
In the first frame 55 of the canopy 54, a portion of the belt member 67 opposite to the hook portion 67a is connected to a portion (corresponding to the first locking portion) between the shaft portions 55a and 55b and the free end portion 55c. You may.

The hook portion 67a of the belt member 67 may be attached to a portion (corresponding to a second locking portion) between the shaft core P4 and the free end portion 48b in the first frame 48 of the guard portion 47.
According to this configuration, with the belt member 67 attached over the canopy 54 and the guard portion 47, the belt member 67 is rearwardly viewed from the first frame 55 of the canopy 54 to the first frame 48 of the guard portion 47. In some cases, it may be extended downward in the vertical direction, or may be extended diagonally downward toward the grain hopper 5.

(Fourth alternative form of carrying out the invention)
In the above-mentioned (second alternative form of carrying out the invention) (third alternative form of carrying out the invention), instead of the belt member 67, a rod-shaped member made of metal or synthetic resin (corresponding to a connecting member) is used. May be good.
In this case, the rod-shaped member may be connected to the canopy 54 or the guard portion 47.

(Fifth alternative form of carrying out the invention)
The configuration for holding the canopy 54 in the usage state B1 may be configured as follows.
In the canopy 54, a connecting hole (not shown) (corresponding to the first locking portion) along the radial direction is opened in the shaft portion 55b of the first frame 55, and a connecting hole is opened in the boss portion 61c of the support member 61. (Not shown) (corresponding to the second locking portion) may be opened to provide a connecting pin (not shown) (corresponding to a connecting member).

After operating the canopy 54 in the used state B1, the operator inserts a connecting pin through the connecting hole of the shaft portion 55b of the first frame 55 and the connecting hole of the boss portion 61c of the support member 61. , Canopy 54 can be held in use state B1.
In this case, in order to prevent the connecting pin from being lost, it is preferable that the connecting pin is connected to the support member 61 by an elongated chain, a string member, or the like.

The above-mentioned connecting holes and connecting pins may be provided in the shaft portions 55a and the support member 60 of the first frame 55, or may be provided in the shaft portions 55a and 55b and the support members 60 and 61 of the first frame 55. ..

(Sixth Alternative Form of Implementation of the Invention)
Regarding the configuration in which the canopy 54 is held in the used state B1, a buckle (not shown) (corresponding to a connecting member) is attached to the contact member 63 after the canopy 54 and the receiving portion 61d of the support member 61. , The canopy 54 may be configured to be held in use state B1.

The buckle may be provided over the contact member 63 in front of the canopy 54 and the receiving portion 60d of the support member 60, and the contact member 63 in front of and after the canopy 54 and the receiving portion 60d of the support members 60, 61, It may be provided over 61d,

(7th alternative form of carrying out the invention)
Connecting members such as the connecting pin 64, the belt member 67, and the rod-shaped member are not always installed in the harvester, but even if the operator brings the connecting member and uses it when boarding the workbench 46. Good.

The present invention can be applied not only to ordinary combine harvesters, but also to self-removing combine harvesters and harvesters such as corn harvesters.

5 Grain hopper 26 Discharge part 46 Workbench 47 Guard part 48b Free end part (second locking part)
54 Canopy 55c Free end (first locking part)
55 1st frame (frame)
60 Support member 61 Support member 61d Receiving part (second locking part)
61f Holding hole (holding part)
63 Contact member (first locking part)
64 Connecting pin (connecting member)
65 washer (connecting member)
66 Retaining pin (connecting member)
67 Belt member (connecting member)
B1 usage status B2 storage status

Claims (8)

A grain hopper that stores threshed grains and has a grain discharge section at the bottom.
A workbench on which an operator is boarded, which is projected laterally outward from a position below the grain hopper.
The state is changed by swinging over the usage state in which the grain hopper projects laterally outward and is located above the workbench and the storage state in which the grain hopper is located above. Equipped with a possible canopy,
A first locking portion provided on the member of the canopy and a second locking portion provided on the member of the grain hopper are provided.
A harvester capable of holding the canopy in the used state by operating the canopy in the used state and attaching a connecting member over the first locking portion and the second locking portion. A support member provided on the grain hopper to swingably support the canopy is provided.
The first locking portion is provided on the frame of the canopy.
The harvester according to claim 1, wherein the second locking portion is provided on the support member. A contact member having a flat surface portion is provided on the frame.
A receiving portion having a flat surface portion is provided on the support member.
The second aspect of the present invention, wherein in the used state, the flat surface portion of the contact member and the flat surface portion of the receiving portion come into surface contact with each other to prevent the canopy from swinging downward beyond the used state. Harvester. The first locking portion is the contact member and
The second locking portion is the receiving portion and
The harvester according to claim 3, wherein the canopy can be held in the used state by attaching the connecting member over the contact member and the receiving portion. The harvester according to any one of 2 to 4, wherein the holding portion capable of holding the removed connecting member is provided on the support member. The first locking portion is provided on the frame of the canopy.
The harvester according to claim 1, wherein the second locking portion is provided on a guard portion that projects laterally outward with respect to the grain hopper and can receive an operator of the workbench. The first locking portion is provided at the free end portion of the frame.
The harvester according to claim 6, wherein the second locking portion is provided on a laterally outer portion of the guard portion in a plan view from the first locking portion. The harvester according to claim 6 or 7, wherein the connecting member is connected to one of the first locking portion and the second locking portion.

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