JP2019062844A - Combine-harvester - Google Patents

Abstract

To provide a combine-harvester configured to facilitate maintenance work of the inside of a grain tank, though it can favorably store harvested kernels.SOLUTION: A rotational support structure A includes: a shaft member 52 attached to one of a side plate 50 and a tank body, with it located on a shaft core; and a boss member 57 attached to the other of the side plate 50 and the tank body and by which the shaft member 52 is insertedly supported. The boss member 57 includes a plurality of plate members 57a juxtaposed along the vertical direction, and a support member 57e for supporting the plate members 57a. Each plate member 57a has a through-hole 57b in which the shaft member 52 is inserted, where two crossing sides 57c in the outer periphery of the plate member 57a are joined with the support member 57e.SELECTED DRAWING: Figure 19

Description

  The present invention relates to a combine provided with a grain tank for storing harvested grain.

  Conventionally, the outer peripheral surface of the grain tank is constituted by a wall in a state in which the front side, the rear side, and the left and right sides are all connected in series, and is stored inside the wall surrounded by the wall. Space was formed (for example, refer to patent documents 1).

JP, 2014-68561, A

  Since the above-mentioned conventional composition is constituted by the wall in the state where all the peripheral faces of a grain tank were connected in a row in a row, a substantially sealed closed space is formed by the peripheral face without gaps. It is possible to store harvested grains well.

  However, in the above-described conventional configuration, for example, there is a disadvantage that it is difficult to perform maintenance work inside the tank such as cleaning work for removing dust and residual grains adhering to the inner wall surface of the storage space after the harvest work is finished. The In order to be able to carry out maintenance work, for example, an opening closed by an openable lid is formed in a part of the upper surface of the grain tank so that work can be carried out from the upper side of the grain tank through this opening However, it was difficult to work from the upper side with a large grain tank.

  Therefore, it has been desired that the maintenance work inside the grain tank can be easily performed while being able to well store the harvested grain.

The characterizing feature of the combine according to the present invention is provided with a grain tank for storing harvested grains in an internal storage space,
The grain tank is provided with an openable side plate, and a tank main body having an opening formed at a position facing the side plate;
The grain tank has a storage state in which the side plate closes the opening to allow storage of grains, and a maintenance state in which the side plate opens the opening to allow access to the storage space. Configured to be switchable,
The side plate is rotatably supported by the tank main body via a rotational support structure so as to be rotatable about an axis along the vertical direction.
The rotation support structure is attached to one of the side plate and the tank main body, the shaft member attached to the shaft core, the other of the side plate and the tank main body, And a boss member through which the shaft portion is inserted and supported,
The boss member has a plurality of plate members arranged in parallel along the vertical direction, and a support member for supporting the plate members.
The plate member has a through hole into which the shaft member is inserted,
Two intersecting side portions of the outer periphery of the plate member are at a point joined to the support member.

  According to the present invention, when performing a harvesting operation, it is possible to store the harvested crop in the storage space inside the grain tank by switching the grain tank to the storage state. When the harvesting work is finished and the maintenance work such as the cleaning work is performed, the grain tank is switched to the maintenance state. When switching to the maintenance state in this manner, the storage space is opened to the outside, enabling an operator to enter the storage space.

  As a result, when a worker gets into the storage space, maintenance work such as cleaning work for removing dust and residual grains adhering to the inner wall surface of the storage space can be easily performed without bothering.

  The boss member of the rotational support structure has a plurality of plate members arranged in parallel along the vertical direction and a support member for supporting the plate member, and two intersecting side portions in the outer periphery of the plate member are supported Since it is joined to the member, the strength of the boss member is improved, and the rotation support structure can reliably support the side plate.

  Therefore, it has become possible to easily carry out the maintenance work inside the grain tank while being able to well store the harvested grain.

  In the present invention, the supported surface of the support member in the posture along the vertical direction and the support surface of the side plate or the tank main body in the posture along the vertical direction are joined by surface contact. It is suitable.

  According to this configuration, since the support member is joined by surface contact, the attachment of the boss member to the side plate or the tank main body becomes strong, and the rotation support structure can support the side plate more reliably. .

  In the present invention, it is preferable that the plate member has a cutout portion, and the support member has a projection portion, and the projection portion is joined in a state of being inserted into the cutout portion. .

  According to this configuration, since the support member and the plate member are joined through the notch portion and the protrusion portion, the strength of the boss member is further improved, and the pivoting support structure supports the side plate more reliably. Can.

  In the present invention, it is preferable that the shaft member is attached to one of the side plate and the tank main body through the vertical position adjustment mechanism, and the vertical position adjustment mechanism adjusts the vertical position of the shaft member. It is.

  According to this configuration, since the vertical position adjustment mechanism adjusts the vertical position of the shaft member, the positional error of the shaft member due to the individual difference in the shape of the grain tank is corrected to improve the accuracy of the mounting position of the side plate , And can improve the degree of closure of the grain tank.

  In the present invention, the shaft member is attached to one of the side plate and the tank main body through a horizontal position adjustment mechanism, and the horizontal position adjustment mechanism is preferably adjusted in the horizontal direction of the shaft member. It is.

  According to this configuration, since the horizontal position adjustment mechanism adjusts the horizontal position of the shaft member, the positional error of the shaft member due to the individual difference in the shape of the grain tank is corrected to improve the accuracy of the mounting position of the side plate , And can improve the degree of closure of the grain tank.

  In the present invention, the shaft member is attached to one of the side plate and the tank main body through a tilt adjusting mechanism, and the tilt adjusting mechanism preferably adjusts the tilt of the shaft member.

  According to this configuration, since the inclination position adjustment mechanism adjusts the inclination of the shaft member, the inclination error of the shaft member due to the individual difference in the shape of the grain tank is corrected to improve the mounting accuracy of the side plate The degree of obstruction can be improved.

It is a whole side view of a combine. It is a whole top view of a combine. It is a partial longitudinal back view of a grain tank. It is a partial cross section top view of a grain tank. It is a perspective view of the grain tank in a maintenance state. It is a side view of a tank main part. It is a vertical rear view of the grain tank of the state which opened the right side wall part. It is a vertical rear view of the grain tank in the state which closed the right side wall part. It is a cross-sectional top view of a grain tank. It is a vertical rear view of a right side wall part. It is a side view of a right side wall part. It is a partial longitudinal back view of a duct. It is a side view of a duct. It is a disassembled perspective view of the control lever arrangement | positioning part. It is a longitudinal cross-section back view which shows the mounting state of a toggle spring. It is a longitudinal cross-sectional view which shows a latching guide body. It is a longitudinal cross-sectional view which shows a latching guide body. It is a top view which shows a rotation support structure. It is a perspective view which shows a rotation support structure. FIG. 5 is a perspective view of the opening of the grain tank; It is a cross-sectional top view of the right side wall of another embodiment. It is a side view of the window part of another embodiment. It is a side view of the window part of another embodiment. It is a flowchart of control operation of another embodiment. It is a cross-sectional top view of the horizontal position adjustment mechanism of another embodiment.

  Hereinafter, the self-relief type combine according to the present embodiment will be described based on the drawings.

〔overall structure〕
As shown in FIG. 1 and FIG. 2, the combine according to the present invention is provided with a reaper 3 for reaping planted cereals at the front of a traveling machine body 2 self-propelled by a pair of left and right crawler traveling devices 1 and 1 ing. On the front right side of the traveling vehicle 2, a driving unit 5 whose periphery is covered by a cabin 4 is provided. Behind the operation unit 5, a threshing device 6 for threshing the grain which has been cut by the mowing portion 3 and a grain tank 7 for storing grains obtained by the threshing process are arranged in a lateral direction. It is deployed in the state. The grain tank 7 is located on the right side of the machine, and the threshing device 6 is located on the left side of the machine. That is, the operation unit 5 is located in front of the grain tank 7. An engine E is provided below the driver's seat 8 in the driving unit 5. A grain discharging device 9 for discharging grains stored in the grain tank 7 to the outside of the machine is provided at the rear of the traveling body 2 and at the rear of the grain tank 7.

  In this embodiment, when defining the longitudinal direction of the vehicle, it is defined along the traveling direction of the vehicle in the working state, and when defining the left-right direction of the vehicle, left and right are defined in the state viewed in the traveling direction of the vehicle. . That is, the direction shown by the code (F) in FIGS. 1 and 2 is the machine front side, and the direction shown by the code (B) in FIGS. 1 and 2 is the machine rear side. The direction indicated by the symbol (L) in FIG. 2 is the left side of the machine, and the direction indicated by the symbol (R) in FIG. 2 is the right side of the machine.

  The reaper 3 is a branching implement 10 for drafting the stock origin of the planted rice straw to be harvested, a plurality of inducing devices 11 for causing the planted cereals in the vertical position to be in the vertical posture, Hair clipper-type reaper 12 which cuts the stock origin of the planted rice straw, vertically transported from the vertical posture to the posture while changing its posture so as to gradually fall sideways The apparatus 13 is provided. The upper side of the vertical conveyance device 13 is covered by a dustproof cover 14.

  Although not shown in the drawings, the threshing device 6 performs a threshing process by squeezing the ear tip side with a throttling chamber while conveying the stock origin side of the supplied harvesting grain gutter with a threshing feed chain. The processed material after being subjected to threshing treatment is sorted into grains, straw and the like in the lower sorting section. The grains are carried out to the right lateral side outward of the threshing device 6 by a first item conveying screw (not shown), and are then fed by the grain conveyor 15 and conveyed to the inside of the grain tank 7. The grain tank 7 stores grains fed from the threshing device 6. Thereafter, the grain stored in the grain tank 7 is carried out by the grain discharging device 9 to the outside.

  The bottom of the grain tank 7 is provided with a bottom screw 16 for conveying the grain, which is stored by being rotated about a front-to-back axis, toward the rear side of the airframe. The grain discharging device 9 receives a grain discharged from the bottom screw 16 and conveys the grain upward, the vertical feed screw conveyor 17 and a base end connected to the upper end of the vertical feed screw conveyor 17. And a transverse feed screw conveyor 19 for conveying the grain in the lateral direction from the head to the outlet 18 of the tip.

[Quality measuring device]
Inside the grain tank 7, a quality measuring device 20 for measuring the quality of the grain is provided.
As shown in FIG. 3, the quality measuring apparatus 20 measures the quality by measuring the temporary storage unit 21 temporarily storing kernels to be measured and the kernels stored in the temporary storage unit 21. And a measuring unit 22 for measuring. As shown in FIG. 3, the temporary storage unit 21 is located on the inward side of the grain tank 7, and the measuring unit 22 is located on the outward side of the grain tank 7. The measuring unit 22 is housed inside the housing case 23 formed in a sealed shape. The temporary storage unit 21 includes a substantially square cylindrical storage case 24 integrally connected to the inner side surface of the storage case 23, and can store grains inside thereof.

  The temporary storage portion 21 is formed with an upper downward passage 25 penetrating in the vertical direction inside the storage case 24 and in a closed state (see FIG. 3) closing the middle of the upper downward passage 25 in the horizontal orientation; And an operating unit 27 for changing the attitude of the shutter plate 26 by the driving force of an electric motor (not shown). There is. The temporary storage unit 21 receives and stores a part of the grain which is transported by the grain conveyor 15 and transported to the inside of the grain tank 7.

  After the grain conveyor 15 lifts the grains to near the upper end by the screw conveyor 28, the grain is passed through the opening 30 formed in the grain tank 7 by the delivery blade 29 provided at the upper end. Release towards the inner side. Some grains of the grains released by the delivery blade 29 are supplied to the temporary storage unit 21.

  In the present embodiment, as shown in FIGS. 3, 9 and 20, the periphery of the opening 30 of the grain tank 7 is reinforced by the vertical reinforcing plate 30a and the horizontal reinforcing plate 30b. The vertical reinforcing plate 30a is a rod-like metal member having an L-shaped cross section, and is attached to the left side wall 47 by welding to the front side and the rear side of the opening 30 in a posture along the vertical direction There is. The lateral reinforcing plate 30 b is a strip-shaped metal member, and is attached to the left side wall 47 by welding along the upper and lower sides of the opening 30. The vertical reinforcing plate 30a and the horizontal reinforcing plate 30b are joined by welding. The reinforcement of the opening 30 by the vertical reinforcing plate 30a and the horizontal reinforcing plate 30b improves the strength of the grain tank 7 and reduces the vibration of the grain tank 7.

  The temporary storage unit 21 receives the released grains in a state in which the shutter plate 26 is switched to the closed state, and stores the grains in the storage space 31 formed in the upper part of the shutter plate 26. Can. When the shutter plate 26 is switched to the open state, the stored grains are dropped and discharged downward and returned to the inside of the grain tank 7.

  The measuring unit 22 irradiates light toward the grain stored in the storage space 31, and measures the internal quality of the grain by the known spectral analysis method based on the light obtained from the grain Do. A window 32 through which light can be transmitted is formed on the side of the measuring unit 22 among the sides forming the storage space 31, and the measuring unit 22 applies light to the grain through the window 32. Receive light from the grain.

[Storage case]
Next, the storage case 23 will be described.
As shown in FIGS. 3, 4 and 5, the storage case 23 has a vertically oriented front wall 33 located on the front side, a vertically oriented rear wall 34 located on the back side, and an upper end of the front wall 33. And an upper connecting portion 35 connected to the upper end of the rear wall 34, a lower connecting portion 36 connected to the lower end of the front wall 33 and the lower end of the rear wall 34, the left side of the machine body It is configured to include an inner side wall portion 37 positioned in (tank inner side) and extending in the vertical direction, and an outer wall portion 38 positioned in the right side of the machine (tank outer side) and extending in the vertical direction.

A frame-shaped upper downward frame 39 is formed by the front wall 33, the rear wall 34, the upper connecting portion 35, and the lower connecting portion 36 in the storage case 23. Then, in addition to the front wall portion 33 and the rear wall portion 34 constituting the upper and lower frame 39, a closed storage space is formed by the inner side wall portion 37 and the outer wall portion 38 supported by the upper and lower frame 39. Is formed. The quality measuring device 20 is accommodated in the frame of the upper downward frame 39 by being connected to the inner side wall portion 37.
The support structure for the grain tank 7 of the storage case 23 will be described later.

[Grain tank]
Next, the grain tank 7 will be described.
As shown in FIGS. 8 and 9, the grain tank 7 is located on the front side 40 located on the front side of the machine, the rear side 41 located on the rear side of the machine, the right side 42 located on the right side of the machine, and the left side of the machine The periphery is surrounded by each of the left side surfaces 43. Also, the upper side is covered by the upper side surface 44. Therefore, a grain storage space Q is formed by being surrounded by the front side 40, the rear side 41, the right side 42, the left side 43, and the upper side 44, respectively.

  In the grain tank 7, a storage state in which a part of the right side wall 45 constituting the right side surface 42 (the opening and closing wall 50 described later) blocks the storage space Q to enable storage of grains, It is configured to be switchable to a maintenance state in which the space Q is opened to the outside to allow an operator access to the storage space Q.

  As shown in FIG. 5, the side surfaces of the grain tank 7 other than the right side surface 42, ie, the front side surface 40, the rear side surface 41, the left side surface 43, and the upper side surface 44 are all connected in series. The tank body 46 is formed by the wall member in the closed state. As shown in FIG. 9, in the left side wall 47 of the tank main body 46 that constitutes the left side 43, a recessed portion 48 is formed for deployment in the state where the grain conveyor 15 is inserted.

  The right side wall 45 of the grain tank 7 is positioned to face the right lateral outside of the traveling airframe 2. The right side wall 45 can open an area ranging from the top to the bottom and from the front to the rear. That is, as shown in FIGS. 5 and 7, the right side wall 45 is formed with an opening 49 with a large opening so as to open an area ranging from the top to the bottom and from the front to the rear. There is. The opening 49 thus largely opened is closed by an openable / closable opening / closing wall portion 50 (an example of a side plate) to form a storage space Q inside.

  As shown in FIGS. 5 and 6, the right side wall portion 45 includes the opening / closing wall portion 50 and the frame-like portion 51 surrounding the periphery of the opening 49, and the frame-like portion 51 is connected to the other side surface , And a part of the tank main body 46. As shown in FIG. 8, the right and left wall portion 50 is closed, and the right and left wall portion 45 is configured by integrally connecting the opening and closing wall portion 50 and the frame-like portion 51 as described later.

  In the present embodiment, the opening / closing wall portion 50 is supported by the tank main body portion 46 in a rotatable state around the axis Y1 along the vertical direction via the rotation support structure A. The pivoting support structure A includes a shaft member 52 attached to the tank main body 46 in a state of being positioned on the axis Y1, and a boss member 57 attached to the opening / closing wall 50 and the shaft member 52 is inserted through and supported Have. Specifically, as shown in FIG. 5, the open / close wall 50 is supported by the tank body 46 so as to be able to swing open and close around the axis Y 1 of the shaft member 52 located behind the grain tank 7. At the right end of the rear side wall 53 that constitutes the rear side surface 41 of the tank main body 46, two rotation support parts 54 are provided at intervals in the vertical direction. The rotation support portion 54 includes a support base 55 that protrudes rearward and a shaft member 52 that extends upward from the support base 55.

  A substantially U-shaped boss member 57 is connected at a position corresponding to the rotation support portion 54 in the open / close wall portion 50, in which a through hole 57b is formed to engage with and engage with the shaft member 52 from the upper side. It is done. By bringing the upper and lower boss members 57 into engagement with the shaft member 52, the open / close wall 50 is supported so as to be pivotable around the axis Y1 of the shaft member 52. The pivoting support structure A will be described later.

  Next, the configuration for reinforcing the strength in the tank body 46 will be described.

  As shown in FIGS. 5, 6 and 9, a front-to-back frame 58 is provided as a frame body extending in the longitudinal direction of the machine across the front and rear of the tank body 46. The front and back direction frame 58 is formed in a cylindrical shape, and is provided in a state of extending over the front side wall portion 59 constituting the front side surface 40 of the tank main body portion 46 and the rear side wall portion 53 constituting the rear side surface 41 . The front-to-back frame 58 is provided at the upper and lower intermediate portions of the right end of the machine inside the grain tank 7. As shown in FIGS. 5 and 6, the front end portion of the front and rear direction frame 58 is provided in a state of being inserted through the front side wall portion 59 and exposed outward on the front side. A rear end portion of the front and rear direction frame 58 is provided in a state where the rear side wall portion 53 is inserted and exposed to the rear side. The front-rear direction frame 58 is held in position in a state in which the front side wall portion 59 and the rear side wall portion 53 are inserted, and in a state in which detachment is prevented by a retaining pin (not shown).

  A plurality of auxiliary frame bodies extending in different directions from the front and rear facing frame 58 and connecting the left side wall 47 as a planar tank structure different from the opening and closing wall 50 and the front and rear facing frame 58 There is.

  As shown in FIGS. 5, 6, 8 and 9, the front and rear direction frame 58 is located at a position closer to the front side than the front and rear center portion of the front and rear direction frame 58 and at a position closer to the rear side than the front and rear center portion. A first auxiliary frame 61 made of a round bar material is provided as an auxiliary frame body connecting the left side wall portion 47 and the left side wall portion 47. As shown in FIG. 8, the first auxiliary frames 61 on both the front and rear sides are extended upward to the left from the connection position with the front-rear direction frame 58 and connected to the upper side of the left side wall 47.

  In addition, a second auxiliary frame 62 made of a band plate material is provided as an auxiliary frame body that connects the upper side portion of the right side wall portion 45 and the lower side portion of the left side wall portion 47.

  As described above, since the front-rear direction frame 58, the two first auxiliary frames 61, and the one second auxiliary frame 62 are provided, the support strength of the tank body 46 where the right side wall 45 is largely opened is enhanced. be able to. When the description is added, the front side wall 59 and the rear side wall 53 are connected by the front-to-rear frame 58, so that the front side wall 59 and the rear side wall 53 protrude outward by the weight of the grain. Even if the pressure is received, the force can be received by the forward and backward direction frame 58 to prevent the deformation. As shown in FIG. 8, even if the upper side portion of the left side wall portion 47 receives a force so as to protrude outward by the weight of the grain, the force can be received by the first auxiliary frame 61 to prevent the deformation. . Similarly, the lower portion of the left side wall 47 can be prevented from being deformed by the second auxiliary frame 62.

The support structure of the storage case 23 for storing the quality measuring device 20 will be described.
The lower portion of the upper and lower frame 39 in the storage case 23 is mounted and supported in a state of engaging with the front and rear direction frame 58. That is, as shown in FIG. 3, in the lower end portions of the front wall portion 33 and the rear wall portion 34, engagement concave portions 65 which engage with the front-rear direction frame 58 are formed. The engagement concave portions 65 of the front wall portion 33 and the rear wall portion 34 can be received and supported by the front and rear direction frame 58 in a state of being engaged with the front and rear direction frame 58 from the upper side.

  As shown in FIGS. 3 and 6, the upper portion of the upper and lower frame 39 is connected to the upper edge 51 a of the right side wall 45 of the grain tank 7.

  Next, the configuration for reinforcing the strength of the open / close wall portion 50 will be described.

  As shown in FIG. 8, the open / close wall portion 50 is formed in a gentle arc shape in the front-rear direction. As shown in FIGS. 5, 10 and 11, an upper reinforcement member 67 is provided at an upper side portion of the inner wall of the open / close wall portion 50 on the inner side of the tank. The upper reinforcing member 67 is formed by bending a plate material into a substantially U-shaped cross section and is provided in a state of extending in the front-rear direction. The upper reinforcing member 67 is integrally connected to the wall surface of the open / close wall 50 throughout the front-rear direction. A rectangular tubular frame body 68 is configured by the upper side reinforcing member 67 and the wall surface of the open / close wall portion 50. The rear end of the open / close wall 50 is provided with a support reinforcing member 50 c for supporting the entire open / close wall 50 via the upper and lower boss members 57.

  A lower reinforcing member 70 is provided at a lower side location on the tank inner side of the open / close wall portion 50. The lower reinforcing member 70 is formed by bending a plate material into a substantially U-shape, and is provided in a state of extending in the front-rear direction. The lower reinforcing member 70 is integrally connected to the wall surface of the open / close wall 50 throughout the front-rear direction.

  An inclined guide 71 is provided on the upper side of the lower reinforcing member 70. The inclined guide body 71 is provided with an inclined surface 71 a for diverting the stored grains around the upper side of the lower reinforcing member 70 and flowing downward toward the lower bottom screw 16. An intermediate reinforcing member 72 which is formed by bending a plate material into a substantially mountain shape and extends in the front-rear direction is provided at the upper and lower intermediate portions on the tank inner side of the open / close wall portion 50. The intermediate reinforcing member 72 is integrally connected to the wall surface of the open / close wall 50 over the entire area in the front-rear direction.

  A plurality of vertically oriented support plates extending in the vertical direction are provided on the inner side of the tank of the opening / closing wall portion 50 at intervals in the front and rear direction so as to extend over the upper side reinforcing member 67 and the lower side reinforcing member 70. . Specifically, as shown in FIGS. 4, 5, 9 and 11, as a vertical support plate, a first vertical support plate 73 located at the front end of the open / close wall 50, the front end A second vertically oriented support plate 74 is provided at a position closer to the rear side than the section by a set width, and a third longitudinally oriented support plate 75 is provided at the front and back intermediate portion. Each of the plurality of vertically oriented support plates 73, 74, and 75 is formed of a plate having an L-shaped cross section, and is integrally connected to the inner side surface of the open / close wall 50.

  As shown in FIGS. 5 and 11, the upper reinforcing member 67 is provided over the entire width of the open / close wall 50 in the front-rear direction. The middle reinforcement member 72, the inclined guide body 71, and the lower reinforcement member 70 are provided across the second vertically oriented support plate 74 and the support reinforcement member 50c, respectively.

Next, a connecting structure for connecting the open / close wall 50 to the tank body 46 will be described.
A connection device 76 is provided for connecting the swing side end of the open / close wall 50 to the tank body 46 when the grain tank 7 is in the storage state. As shown in FIGS. 7, 8 and 10, the coupling device 76 includes a front and back direction frame 58 provided on the tank main body 46 and a locking member 77 provided on the opening and closing wall portion 50 and engaged with the front and rear direction frame 58. And a switching operation mechanism 78 for switching between a locked state in which the locking member 77 is locked to the front-rear direction frame 58 and a released state in which the locking is released. As shown in FIG. 10, the locking member 77 is formed of a hook-like member having a substantially U-shaped locking groove 79.

  The switching operation mechanism 78 is configured to be switchable between a locked state in which the locking member 77 is caught and locked to the front-rear direction frame 58 and a released state in which the locking is released by the swing operation of the control lever 80. There is. As shown in FIGS. 4, 10 and 11, the switching operation mechanism 78 includes an operation lever 80 and a locking member 77. The operation lever 80 is an L-shaped member in which the grip portion 80a and the pivot shaft portion 80b are integrally formed. The locking member 77 is connected to the pivot shaft 80b. The locking member 77 is switched between the locked state and the released state by the rotation of the pivot shaft portion 80b in accordance with the swing operation of the grip portion 80a of the operation lever 80.

  The pivot shaft portion 80 b is provided at a position close to the inner side of the tank of the opening and closing wall portion 50 so as to extend in the front and rear direction over the front and rear intermediate portion and the front portion of the opening and closing wall portion 50.

  As shown in FIG. 14, the pivot shaft portion 80 b of the operation lever 80 is inserted into the cylindrical shaft portion 82 and joined together with the locking member 77 by welding. The pivot shaft portion 80 b is inserted into the notch portion 74 a of the vertical support plate 74. A pressure plate 74b is attached to the vertical support plate 74 by a bolt Bo to close the notch portion 74a. As described above, the control lever 80 is attached to the vertical support plate 74. The attachment of the operation lever 80 to the vertical support plate 75 is also performed in the same manner.

  As shown in FIG. 14, the operation lever 80 is provided so as to be located between the first vertical support plate 73 and the second vertical support plate 74. A lid capable of sliding in the vertical direction at a position corresponding to the operation lever 80 between the first vertical support plate 73 and the second vertical support plate 74 among the wall portions of the opening / closing wall portion 50 An opening 86 covered by 85 (see FIG. 1) is formed. When the lid 85 is slid upward, the control lever 80 faces outward through the opening 86, and the operator can manually operate from the outside of the machine body.

  As shown by the solid lines in FIGS. 4 and 10 and 15, when the control lever 80 is switched to the vertical posture positioned inside the opening and closing wall portion 50, the locking member 77 locks to the front and rear direction frame 58. The swing side end of the open / close wall 50 and the tank body 46 are connected. Then, the grain tank 7 is stored. When the control lever 80 is switched to the inclined position by manually pulling the control lever 80 outward through the opening 86, as shown by the white arrow in FIG. The locking with respect to 58 is released, and the connection between the swing side end of the open / close wall 50 and the tank body 46 is released. When the open / close wall unit 50 is opened, the grain tank 7 is in the maintenance state.

  As shown in FIG. 15, a toggle spring 87 is stretched between the rear side locking member 77 and the third vertically oriented support plate 75. When the control lever 80 is switched to the vertical orientation, the toggle spring 87 is positioned lower than the axial center of the pivot shaft 80b in the front-rear direction, and pivots the locking member 77 downward. Power up. As a result, the locking member 77 is kept locked to the front-rear direction frame 58. On the other hand, when the control lever 80 is switched to the inclined posture on the outer side, the toggle spring 87 is positioned above the axis of the pivot shaft 80b in the front and rear direction, and the locking member 77 is directed upward. And turn it. As a result, the locking member 77 is maintained in the released state of being separated from the front-rear direction frame 58.

  When the locking member 77 is locked to the front and back direction frame 58, even if the opening and closing wall 50 receives a force so as to protrude outward by the weight of the grain, the force is received by the front and back direction frame 58 to deform Can be prevented. In addition, the front and rear facing frame 58 and the frame-like portion 51 around the opening 49 in the right side wall 45 are connected via the upper and lower frames 39. As a result, as shown in FIG. 8, the front and rear direction frame 58 is received by the first auxiliary frame 61, the second auxiliary frame 62, the locking member 77, and the storage case 23 in a plurality of circumferentially different directions. As it is held, it is possible to mutually receive each other in a state in which the load concerning each side surface of the grain tank 7 is dispersed, and it is possible to improve the support strength.

  When the grain tank 7 is in the storage state, the switching operation mechanism 78 holds the position of the opening / closing wall 50 and pulls the opening / closing wall 50 toward the tank main body 46 to eliminate gaps, thereby closing the storage space. It has a configuration to enhance. The configuration will be described below.

  As shown in FIGS. 7, 8, 10 and 11, the opening / closing wall 50 is supported so as to be movable only in the vertical direction, and is capable of moving in the vertical direction with the rotation of the rotary shaft 81. A plurality of rods 88 interlocked with 81 are provided, and a plurality of inclined guide members 89 are provided in the tank body 46. Then, when the operation lever 80 is switched from the inclined posture to the vertical posture so that the locking member 77 is in the locked state, the rod 88 is slide-guided by the tilt guide member 89 and the opening / closing wall portion 50 is drawn toward the tank main body 46 side.

  To add the description, a total of four rods 88 are portions corresponding to the front and rear end portions of the pivot shaft 80b in a side view and at the upper and lower portions of the opening / closing wall 50 respectively. Is provided so as to be movable only in the vertical direction.

  As shown in FIGS. 10 and 11, an insertion hole through which the rod 88 is inserted is formed in the middle of the upper side of each of the second vertical support plate 74 and the third vertical support plate 75. An upper side support member 90 is provided. Further, an insertion hole through which the rod 88 is inserted is formed in the upper side reinforcing member 67. The two rods 88 located on the upper side are provided in such a manner as to pass through insertion holes formed in each of the upper side support member 90 and the upper side reinforcement member 67, and are supported so as to be movable only in the vertical direction.

  As shown in FIGS. 10 and 11, a lower support member 91 is provided which is substantially U-shaped in the front-rear direction and in which an insertion hole through which the rod 88 is inserted is formed. The lower support member 91 is connected to the lower reinforcing member 70 and the inclined guide body 71. The two lower rods 88 are provided in such a manner as to pass through insertion holes formed in the upper and lower sides of the lower support member 91, and are supported so as to be movable only in the vertical direction.

  As shown in FIGS. 10 and 14, an operation body 92 which is integrally rotated with the rotation shaft 80b is connected to the cylindrical shaft 82 externally inserted at the front and rear ends of the rotation shaft 80b. The operating body 92 is provided on the front and rear intermediate side portion of the front and rear cylindrical shaft portions 82. That is, the operation body 92 on the front side is provided at the rear end of the cylindrical shaft portion 82 on the front side. The rear-side operating body 92 is provided at the front end of the rear-side cylindrical shaft portion 82.

  The operating body 92 includes a first arm 92A extending radially outward from the pivot shaft 80b, and a second arm 92B extending radially outward in the opposite direction to the first arm 92A. Have. The outer end of the first arm 92A and the upper rod 88 are pivotally connected by the link member 93. The outer end of the second arm 92B and the lower rod 88 are pivotally connected by a link member 93. Along with the operation of the operation lever 80, the pivot shaft 80b pivots, and the rod 88 slides in the vertical direction via the operation body 92 and the link member 93.

  As shown in FIGS. 5 and 10, a plurality of inclined guide members 89 are provided at positions where the rod 88 slides in the frame-like portion 51 of the tank body 46. The two inclined guide members 89 located on the upper side are provided at locations on the tank outer side of the frame-like portion 51. The two inclined guide members 89 located on the lower side are provided at a location inside the tank in the frame-like portion 51. The two inclined guide members 89 located on the upper side are located on the side where the lower end portion is separated from the frame-like portion 51, and have an inclined surface which approaches the frame-like portion 51 as it goes upward. The lower two inclined guide members 89 are positioned on the side where the upper end portion is separated from the frame-like portion 51, and have an inclined surface which approaches the frame-like portion 51 toward the lower side.

  As shown in FIGS. 6 and 10, each of the plurality of inclined guide members 89 is integrally provided with two screw shaft portions 89a for inserting the frame-like portion 51, and is a nut 89b screwed to the screw shaft portion 89a. It is tightened and fixed to the frame-like portion 51. The inclined guide member 89 is provided so as to be able to change and adjust the position of the tank body 46 and the opening / closing wall 50 in the approaching / separating direction by changing the tightening position of the screw shaft 89a relative to the frame 51 by the nut 89b. It is done.

  When the operating lever 80 is switched to the vertical orientation, the upper rod 88 moves upward and the lower rod 88 moves downward via the operating body 92 and the link member 93. The upper rod 88 is slidably guided by the upper inclined guide member 89 provided to the tank main body 46, and the lower rod 88 is slid to the lower inclined guide member 89 provided to the tank main body 46. You will be guided. The sliding guide of the rod 88 and the inclined guide member 89 displaces the open / close wall 50 and the tank main body 46 relative to each other, and the open / close wall 50 is drawn closer to the tank main body 46. As a result, the open / close wall 50 and the frame-like portion 51 around the opening 49 of the tank main body 46 are in close contact with each other, and the grain can be stored.

  By providing the connecting structure for connecting the open / close wall 50 to the tank main body 46 as described above, the open / close wall 50 is in a closed state so that the grain tank 51 is in close contact with the grain tank 51. 7 switches to the storage state. Therefore, in the right side wall 45, not only the open / close wall 50 and the frame-like portion 51 but also a connecting structure for connecting the open / close wall 50 to the tank main body 46, that is, the front and back direction frame 58 and the locking member 77. And the switching operation mechanism 78 etc. At the contact points between the open / close wall 50 and the frame-like portion 51, that is, the contact points between the upper reinforcing member 67 and the frame-like portion 51 and the contact points between the lower reinforcing member 70 and the frame-like portion 51, A sealing member may be interposed.

  When the control lever 80 is switched to the inclined posture (the phantom line in FIG. 10), the locking member 77 is released as shown by the phantom line in FIG. Along with this, as shown in FIG. 7, the upper rod 88 moves downward through the operating body 92 and the link member 93 to disengage from the inclined guide member 89, and the lower rod 88 By moving upward, the engagement with the inclined guide member 89 is released. As a result, the open / close wall 50 is switched to the open state, and the grain tank 7 is switched to the maintenance state.

  As shown in FIG. 4, the control lever 80 is provided in a lever storage area W sandwiched by the first vertical support plate 73 and the second vertical support plate 74 of the opening and closing wall portion 50. As shown in FIGS. 4 and 6, a wall surface portion 94 is formed at a position corresponding to the lever storage area W on the right side surface of the tank main body portion 46. Further, a partition plate 95 long in the vertical direction is provided at the rear end edge of the wall surface portion 94, and the lever storage area W and the storage space Q are partitioned by the partition plate 95 and the second vertically oriented support plate 74. Is configured to be As a result, even if grain is stored in the storage space Q, there is no grain in the lever storage area W provided with the control lever 80, and the operation can be easily performed.

  Since the open / close wall portion 50 is supported in a cantilevered manner around the longitudinal axis Y1 on the rear side, the swinging end side is compared to the base end side due to the play at the pivot location and wear due to use and the like. There is a risk of falling slightly and becoming in an oblique position. Therefore, a mechanism is provided to lift and guide the swinging end side of the open / close wall 50 to an appropriate position when switching the grain tank 7 to the storage state in response to such posture change.

  That is, as shown in FIG. 10, when the grain tank 7 is switched to the storage state, the lower side reinforcing member 70 in the open / close wall portion 50 contacts the lower edge of the frame-like portion 51 and comes into close contact It will be in the state of The portion of the lower reinforcing member 70 which abuts on the lower edge of the frame-like portion 51 is inclined to be positioned on the upper side toward the inside of the tank. With this configuration, for example, even when the swinging end side of the opening and closing wall portion 50 is slightly lower than the base end side and is in an oblique posture, the opening and closing wall portion 50 is closed and connection by the switching operation mechanism 78 When the operation is performed, the inclined surface of the lower reinforcing member 70 can ride on the lower edge of the frame-like portion 51 to lift and guide the open / close wall portion 50 to an appropriate position.

  Next, the details of the rotation support structure A will be described. As shown in FIGS. 18 and 19, the rotation support structure A is configured to include a rotation support portion 54 and a boss member 57. In the present embodiment, the rotation support portion 54 is attached to the tank main body 46, and the boss member 57 is attached to the opening and closing wall portion 50.

  The rotation support portion 54 is configured to have a shaft member 52, a support base 55, and a support plate 56. The support plate 56 is a rectangular plate-like member, and is attached to the rear side wall portion 53 with its long side extending in the vertical direction. The support stand 55 is a plate-like member of two sheets, and is attached to the support plate 56 in a posture parallel to each other and orthogonal to the vertical direction. The shaft member 52 is a cylindrical member, and is attached to the support base 55 in a posture in which the central axis is along the vertical direction. Specifically, the lower half of the shaft member 52 is joined to the two plate-like members of the support base 55, and the upper half of the shaft member 52 protrudes upward from the support base 55. The central axis of the shaft member 52 is the axis Y1.

  The support plate 56 has an elongated hole 56a at the upper and lower ends. The support plate 56 is attached to the rear side wall 53 by a bolt Bo through the elongated hole 56a. Therefore, the support plate 56 is movable in the horizontal direction and the vertical direction, and the inclination with respect to the vertical direction can be changed. Then, the shaft member 52 attached to the support plate 56 is movable in the horizontal direction and the vertical direction, and the inclination with respect to the vertical direction can be changed.

  That is, the shaft member 52 is attached to one of the open / close wall 50 (side plate) and the tank main body 46 via the vertical position adjustment mechanism F, and the vertical position adjustment mechanism F sets the position of the shaft member 52 in the vertical direction It can be said that it adjusts. The support plate 56, the long hole 56a, and the bolt Bo correspond to the vertical position adjustment mechanism F.

  The shaft member 52 is attached to one of the opening / closing wall 50 (side plate) and the tank main body 46 via the horizontal position adjustment mechanism G, and the horizontal position adjustment mechanism G It can be said that it adjusts. The support plate 56, the long hole 56a, and the bolt Bo correspond to the horizontal position adjustment mechanism G.

  Furthermore, the shaft member 52 is attached to one of the opening / closing wall 50 (side plate) and the tank main body 46 via the tilt adjustment mechanism H, and it can be said that the tilt adjustment mechanism H adjusts the tilt of the shaft member 52. The support plate 56, the long hole 56a, and the bolt Bo correspond to the tilt adjustment mechanism H.

  The positional relationship between the tank main body 46 and the open / close wall 50 can be adjusted by the vertical position adjustment mechanism F, the horizontal position adjustment mechanism G, and the inclination adjustment mechanism H described above, and the degree of closure and air tightness of the grain tank 7 can be adjusted. It becomes possible to adjust the sex. In the present embodiment, the two rotation support portions 54 are attached to the tank main body 46 in a state of being vertically separated. The vertical position, the horizontal position, and the inclination of the shaft member 52 can be adjusted independently of each other by the two rotation support portions 54.

  The boss member 57 is configured to have a plate member 57a of two kinds and a first member 57f and a second member 57g as a support member 57e. The second member 57g is a bent plate-like member. The front end portion of the second member 57g is bent rightward to form a supported surface 57h in a posture along the vertical direction. The second member 57g is attached to the supporting and reinforcing member 50c of the opening and closing wall portion 50, and the supported surface 57h of the second member 57g and the supporting surface 50a of the supporting and reinforcing member 50c are joined by surface contact. The support surface 50 a is a surface of the tank main body 46 in a posture along the vertical direction. The rear end of the second member 57g is bent in the left direction to form a projecting portion 57j.

  The first member 57f is a plate-like member bent in an L-shape. The first member 57f is attached to the second member 57g in a posture in which the top view is L-shaped.

  The plate member 57a is a plate-like member, and has a through hole 57b and a notch portion 57d. The two plate members 57a are attached to the first member 57f in parallel in the vertical direction and in a posture perpendicular to the vertical direction. Specifically, two intersecting side portions 57c on the outer periphery of the plate member 57a are joined to the support member 57e. Then, the projecting portions 57j of the second member 57g are inserted into the notched portions 57d of the plate member 57a and are joined together.

  In the rotation support structure A having the above configuration, the shaft member 52 of the rotation support portion 54 is inserted into the through hole 57b of the boss member 57, and the open / close wall portion 50 is rotatably supported by the tank body 46 Be done.

  In the present embodiment, as shown in FIGS. 5 and 11, the grain tank 7 is configured to have the opening degree holding bar 140. The opening degree holding rod 140 is a rod-like member whose both ends are bent, and one end (supporting end) is held in the hole 141 a of the support plate 141. When the grain tank 7 is maintained in the maintenance state, the other end (free end) of the opening degree holding rod 140 is inserted into the hole of the fixing member 142 of the tank main body 46. As a result, the opening degree holding rod 140 holds the open / close wall 50 in the open state against the force to close the open / close wall 50. When closing the opening / closing wall portion 50, the free end of the opening degree holding rod 140 is removed from the hole of the fixing member 142, and the opening degree holding rod 140 is pivoted downward to clip the opening degree holding rod 140. Hold on.

  In the present embodiment, as shown in FIG. 5, the grain tank 7 is configured to have the open prevention wire 150. The open prevention wire 150 is a flexible metal wire, one end of which is connected to the pin 151 of the tank body 46 and the other end of which is connected to the pin 152 of the open / close wall 50. The open prevention wire 150 prevents the open / close wall 50 from opening more than a predetermined angle (for example, 90 degrees). The opening prevention wire 150 is in the state shown in FIG. 5 (the state in which the opening holding rod 140 is passed between the opening and closing wall 50 and the tank main body 46) or the state where the opening and closing wall 50 is closed (cereal) In the maintenance state of the grain tank 7, it becomes a sagging state.

Next, a structure for cooling the quality measuring device 20 will be described.
The light for measurement applied to the grain in the quality measuring device 20 needs a large amount of light. A light source (for example, a halogen lamp or the like) that projects such a large amount of light also generates a large amount of heat. Therefore, a communication part D is provided as a structure for discharging the high temperature air in the storage case 23 to the outside.

  In the grain tank 7 of the combine according to the present embodiment, as shown in FIG. 3 and FIG. 12, when the grain tank 7 is switched to the storage state, the open / close wall 50 (example of side plate) and the tank main body 46 , And the gap space 50b partitioned with the storage space Q is formed. Specifically, when the grain tank 7 is switched to the storage state, a space surrounded by the upper edge 51a (frame-like portion 51) of the right side wall 45 of the tank body 46 and the upper side reinforcing member 67 is formed. Be done. This space corresponds to the space 50b. The communication portion D communicates the gap space 50 b with the inside of the quality measuring device 20, that is, the inside of the storage case 23. The communicating portion D is configured to have an air vent 51 b, a duct 130, and a filter 133.

  The vent 51 b is an opening formed in the upper edge 51 a of the frame-like portion 51 of the tank body 46. As shown in FIGS. 3 and 12, the storage case 23 of the quality measuring device 20 is provided so as to cover the vent 51b. When the grain tank 7 is switched to the storage state, a gap space 50b is formed at a position facing the vent 51b. Therefore, the high temperature air inside the storage case 23 of the quality measuring device 20 is discharged to the gap space 50b through the vent 51b.

  The duct 130 is a structure for guiding the high-temperature air inside the storage case 23 of the quality measuring device 20 to the gap space 50b, and is provided projecting to the inside and the outside of the storage space Q with respect to the frame-like portion 51 There is. The opening 130a of the duct 130 is directed downward in the outside of the storage space Q, that is, in the gap space 50b.

  The duct 130 is configured to have a first duct member 131 and a second duct member 132. The first duct member 131 is a box-like member whose lower side surface is opened, and is disposed on the opposite side to the storage space Q with respect to the frame-like portion 51 in a state of covering the vent 51b. It is removably supported by the Specifically, the first duct member 131 is screwed to the frame-like portion 51 with a bolt Bo.

  The second duct member 132 is a box-like member whose lower side surface is opened, and is disposed on the storage space Q side with respect to the frame-like portion 51 in a state of covering the vent 51 b. The storage case 23 is provided in a state of covering the second duct member 132.

  The filter 133 is a sponge-like member having air permeability and dust collection property, and is disposed between the first duct member 131 and the second duct member 132 in a state of being inserted into the air vent 51 b. .

  Although not shown, the quality measuring apparatus 20 is provided with a ventilation fan, and air flows in from the lower part of the storage case 23 by operating the fan. Then, as shown in FIG. 12, the high-temperature air inside the storage case 23 flows into the inside of the duct 130 from the lower opening 130b of the second duct member 132, and passes through the filter 133 and the vent 51b, It flows out of the opening 130a on the lower side of the first duct member 131 into the gap space 50b, and flows out of the Y upper part of the gap space 50b (between the open / close wall 50 and the tank body 46) to the outside.

  As shown in FIGS. 3, 12 and 13, the second duct member 132 is formed with an inspection port 132 a which is a circular opening. Here, as shown in FIGS. 3 and 12, the measuring unit 22 of the quality measuring apparatus 20 is detachably supported by the attachment 22 a on the surface of the storage case 23 facing the opening / closing wall 50 (side plate). There is. The inspection port 132a is formed on the left side surface of the second duct member 132 at a position overlapping the fixture 22a in the left-right direction. That is, the inspection port 132a is formed in the second duct member 132 at a position facing the fixture 22a.

  With the above configuration, maintenance of the measuring unit 22 of the quality measuring device 20 can be performed as follows. The open / close wall 50 is opened to put the grain tank 7 in the maintenance state. The first duct member 131 is removed from the frame-like portion 51, and the filter 133 is removed from the vent 51b. Then, as shown in FIG. 13, the tool can be inserted from the right side of the grain tank 7 through the inspection port 132 a of the second duct member 132, and the attachment 22 a can be removed.

  The swinging end side of the open / close wall portion 50 is appropriate when switching the grain tank 7 to the storage state against a posture change in which the swing end side of the open / close wall portion 50 is slightly inclined compared to the base end side As another guiding mechanism for lifting and guiding to a position, the following locking guide 110 is provided.

  As shown in FIG. 5, FIG. 9, and FIG. 16, the locking guide body 110 is provided at a position corresponding to the front-rear direction frame 58 in the third vertical support plate 75 provided in the opening and closing wall portion 50. The locking guide body 110 is a plate-like member, and is extended in a cantilever shape from the third vertically oriented support plate 75 to the inner side of the tank, and is an inclined guide portion acting to ride on the front and rear facing frame 58 It has 111. Further, at the center of the locking guide 110, a punched out portion 110a through which grains can pass is formed. The locking guide 110 is made by laser cutting.

  As shown in FIGS. 16 and 17, when the open / close wall portion 50 swings so as to switch from the maintenance state to the storage state, the inclined guide portion 111 rides on the front / rear direction frame 58 and the swing end portion of the open / close wall portion 50 While being able to be lifted and guided to a proper position, the position can be maintained in the storage state.

[Another embodiment]
Hereinafter, other embodiments will be listed.

(1) The open / close wall portion 50 as the side plate may be configured to swing around the vertical axis located on the front side of the machine, instead of the vertical center, swinging around the longitudinal center to open and close You may make it Further, instead of the swinging one, the right side wall 45 may be opened and closed by removing or attaching.

(2) As shown in FIG. 21, the frame-like portion 51 of the opening 49 of the tank main body 46 is provided with the guiding portion 120 which inclines inward toward the opening toward the inside of the tank. It is good also as composition provided with contact part 121 of a slope posture which contacts. In this configuration, the sealing performance can be further improved by the contact between the guide portion 120 and the contact portion 121 in the closing operation, and there is also an advantage that the rigidity of the whole grain tank is enhanced.

(3) Instead of manually switching the grain tank 7 between the storage state and the maintenance state, for example, a damper such as a gas spring may be used to assist the opening and closing operation of the opening and closing wall portion 50, or Alternatively, the opening and closing operation may be automatically performed using an actuator such as a hydraulic cylinder or an electric motor.

(4) A sensor that detects that the open / close wall 50 is closed and the grain tank 7 is switched to the storage state, or a sensor that detects the holding state by the locking member 77, the engagement state by the rod 88, etc. And if these are not detected, it is good also as composition provided with an informing means etc. which carries out informing processing. The notification means may be configured to notify by turning on a lamp, to notify by displaying a message by a display device capable of character display, to notify by vibrating a member touched by the operator's body, to notify by voice or buzzer sound Various configurations can be considered, such as a configuration in which notification is performed according to the above, or a configuration in which small windows are provided in the open / close wall unit 50 and notification is performed by a change in color. Further, as shown in FIG. 24, if the above-described detection sensor does not detect, as shown in FIG. 24, a construction is provided with a control device (not shown) that executes an engine check control process to warn the operator and check start of the engine E. It may be

(5) As a structure for confirming that the open / close wall unit 50 is reliably closed, as shown in FIG. 22 and FIG. 23, the window portion at a position facing the inclined guide member 89 in the open / close wall unit 50 160 may be formed. When the opening / closing wall portion 50 is reliably closed and the rod 88 is inserted into the proper position, the rod 88 is on the other side of the inclined guide member 89 (the side of the storage space Q) when viewed from the window portion 160 As a result, as shown in FIG. 22, the rod 88 is not visible. When the closing of the opening and closing wall portion 50 is incomplete and the rod 88 is positioned on the front side (the side of the opening and closing wall portion 50) of the inclined guide member 89, as shown in FIG. , The rod 88 will be visible. That is, the closing of the opening and closing wall 50 can be confirmed by the window portion 160 of the opening and closing wall 50.

(6) In the embodiment described above, in the configuration of the pivotal support structure A, the pivotal support portion 54 is attached to the tank main body 46, and the boss member 57 is attached to the open / close wall portion 50. A configuration is also possible in which the rotation support portion 54 is attached to the opening and closing wall portion 50 and the boss member 57 is attached to the tank main body portion 46.

(7) The horizontal position adjustment mechanism G of the rotation support portion 54 may be configured as shown in FIG. The horizontal position adjustment mechanism G of this form is configured to have a shaft member 170, a shaft holding member 171, and an adjustment screw 172. The shaft member 170 is a cylindrical member, and is attached to the shaft holding member 171 so that the central axis thereof extends in the vertical direction. The shaft member 170 is inserted into the through hole 57b of the plate member 57a of the boss member 57, similarly to the shaft member 52 of the above-described embodiment.

  The shaft holding member 171 is a cylindrical member having a diameter larger than that of the shaft member 170, and is disposed on the support base 55 of the rotation support 54 so as to be rotatable about an axis extending in the vertical direction. . The shaft member 170 is disposed at a position offset from the rotation center of the shaft holding member 171. A gear-like gear portion 171 a is formed on the outer peripheral surface of the shaft holding member 171. The adjustment screw 172 can rotate about an axis extending in the left-right direction in a state in which the worm portion 172a formed in a helical thread shape meshes with the gear portion 171a of the shaft holding member 171. It is arranged on the support stand 55. When the adjustment screw 172 is rotated, the shaft holding member 171 is rotated, and the horizontal position of the shaft holding member 171 offset from the rotation center is changed. With the above configuration, the horizontal position adjustment mechanism G adjusts the position of the shaft member 170 in the horizontal direction.

(8) In the above-described embodiment, as the quality measuring device, a configuration is adopted in which light for measurement is irradiated to the grain, and measurement light obtained from the grain is analyzed by a spectral analysis method to measure the quality. . As the quality measuring device, various types of devices other than the above-mentioned optical type can be used.

  The present invention can be applied not only to the self-eliminating combine but also to the ordinary combine.

7: Grain tank 46: Tank body 49: Opening 50: Opening and closing wall (side plate)
50a: support surface 52: shaft member 54: rotation support portion 55: support base 56: support plate 56a: elongated hole 57: boss member 57a: plate member 57b: through hole 57c: side portion 57d: notch portion 57e: support Member 57f: first member 57g: second member 57h: supported surface 57j: projecting portion A: rotational support structure F: vertical position adjustment mechanism G: horizontal position adjustment mechanism H: inclination adjustment mechanism Q: storage space Y1: axis core

Claims (6)

A grain tank is provided to store harvested grains in an internal storage space,
The grain tank is provided with an openable side plate, and a tank main body having an opening formed at a position facing the side plate;
The grain tank has a storage state in which the side plate closes the opening to allow storage of grains, and a maintenance state in which the side plate opens the opening to allow access to the storage space. Configured to be switchable,
The side plate is rotatably supported by the tank main body via a rotational support structure so as to be rotatable about an axis along the vertical direction.
The rotation support structure is attached to one of the side plate and the tank main body, the shaft member attached to the shaft core, the other of the side plate and the tank main body, And a boss member through which the shaft portion is inserted and supported,
The boss member has a plurality of plate members arranged in parallel along the vertical direction, and a support member for supporting the plate members.
The plate member has a through hole into which the shaft member is inserted,
A combine according to which two crossing side parts in the perimeter of said board member are joined to said support member.   2. The support surface according to claim 1, wherein the support surface in the posture along the vertical direction in the support member and the support surface in the posture along the vertical direction in the side plate or the tank main body are joined by surface contact. Combine. The plate member has a notch portion, and the support member has a protrusion portion;
The combine according to claim 1 or 2 joined in the state where said projection part was inserted in said notch part. The shaft member is attached to one of the side plate and the tank main body through an upper and lower position adjusting mechanism,
The combine according to any one of claims 1 to 3, wherein the vertical position adjustment mechanism adjusts the vertical position of the shaft member. The shaft member is attached to one of the side plate and the tank main body via a horizontal position adjustment mechanism,
The combine according to any one of claims 1 to 4, wherein the horizontal position adjustment mechanism adjusts the horizontal position of the shaft member. The shaft member is attached to one of the side plate and the tank main body via an inclination adjustment mechanism,
The combine according to any one of claims 1 to 5, wherein the tilt adjustment mechanism adjusts the tilt of the shaft member.

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