JP6687505B2 - Combine - Google Patents

Description

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

  Conventionally, the outer peripheral surface of the grain tank is configured by a wall body in which the front side surface, the rear side surface, and the side surfaces on the left and right sides are all connected in series, and is stored inside the wall body. A space was formed (for example, see Patent Document 1).

JP, 2014-68561, A

  In the above conventional configuration, since the outer peripheral surface of the grain tank is constituted by the wall body in a state of being connected so as to be continuously connected in series, a space closed in a substantially hermetically closed manner is formed by the peripheral wall surface without a gap, It is possible to store the harvested grains well.

  However, in the above 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 and depositing on the inner wall surface of the storage space after the harvesting work is completed. It was In order to be able to perform maintenance work, for example, an opening closed by an openable lid is formed in a part of the upper surface of the grain tank, and work can be performed from above the grain tank through this opening. Some of them were done, but it was difficult to work on the large grain tank from above.

  Therefore, it has been desired to facilitate the maintenance work inside the grain tank while allowing the harvested grains to be well stored.

The characteristic configuration of the combine according to the present invention is provided with a grain tank for storing the harvested grains in an internal storage space,
A storage plate in which the side plate of the grain tank oscillates about the vertical axis to close the storage space and store the grains, and the storage space is opened to the outside. It is provided so that it can be switched to the maintenance state that enables access to
The grain tank includes the side plate and a tank main body other than the side plate,
The tank body is provided with an opening formed from the upper part to the lower part of the tank body and from the front part to the rear part, and the side plate is configured to open and close the opening,
A connecting device for connecting the side plate switched to the storage state to the tank main body,
The connecting device is provided on one of the tank body and the side plate, and a frame provided on the other of the tank body and the side plate and to which the engaging member engages. A body, and is configured such that the locking member and the frame body are locked after the side plate is switched to the storage state,
Said coupling device, apart from the locking member and the frame member, and an upper coupling mechanism which contacts connecting the portion located above the opening of the upper and the tank body portion of the side plate, the lower portion of the side plate And a lower connecting mechanism for contact-connecting the tank main body with a portion of the tank main body located below the opening.

  According to the present invention, when the harvesting operation is performed, the side plate of the grain tank is switched to the storage state, whereby the harvested crop can be stored in the storage space inside the grain tank. When the harvesting work is completed and maintenance work such as cleaning work is performed, the side plate of the grain tank is switched to the maintenance state. When the maintenance state is switched in this way, the storage space is opened to the outside, and the worker can enter the storage space.

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

  The connecting device connects the side plate that has been switched to the storage state to the tank body by locking the locking member provided on one of the tank body and the side plate to the frame body provided on the other. You can By thus connecting the side plate in the storage state and the tank body by the connecting device including the locking member and the frame body, the inside of the tank is made into a substantially hermetically closed space suitable for storing grain. Therefore, the grain can be stored well.

Therefore, it becomes possible to store the harvested grains satisfactorily and to easily perform the maintenance work inside the grain tank.
In the present invention, the connecting device is provided with an operation tool that operates the locking member, and a switching operation mechanism that links the operation tool and the locking member.
It is preferable that the upper connection mechanism and the lower connection mechanism are linked to the switching operation mechanism and interlock with the locking member by an operation of the operation tool.
In the present invention, the upper coupling mechanism includes a portion located above the opening of the upper and the tank body portion of the side plate, at a plurality of locations spaced in the longitudinal direction, contact connected,
It is preferable that the lower connection mechanism connect the lower portion of the side plate and a portion of the tank main body portion located below the opening at a plurality of positions spaced apart in the front-rear direction.

  In the present invention, it is preferable that the frame body extends in the front-rear direction of the machine body and extends over the front portion and the rear portion of the grain tank.

  According to this configuration, the frame body that connects the front portion and the rear portion of the grain tank can prevent the reduction in the supporting strength of the grain tank due to the opening of the side plate. By using the connecting frame body, it becomes possible to secure the supporting strength capable of favorably storing the grain.

  In the present invention, it is preferable that the frame body is provided in the tank main body.

  According to this configuration, when the side plate is switched to the maintenance state, the tank main body is configured to open the storage space to the outside, which may reduce the support strength of the tank main body by that amount. . According to this configuration, since the frame body is provided in the tank main body portion, it is possible to provide the tank main body portion with the supporting strength necessary for storing the grain by using the connecting frame body.

  In the present invention, the tank body is provided with a plurality of auxiliary frame bodies that extend in different directions from the frame body and that connect the frame body and the planar tank structure different from the side plate. Is preferable.

  According to this configuration, the frame body and the planar tank structure different from the side plate that is switched to the maintenance state are connected by the plurality of auxiliary frame bodies. Supporting the entire tank main body by connecting the frame body having sufficient support strength for connecting the tank main body and the side plate with the planar tank structure by a plurality of auxiliary frame bodies extending in different directions. The strength can be further increased.

  If the frame body alone provides the necessary supporting strength for the entire tank main body, the frame body becomes a large member, and the storage capacity may be sacrificed. On the other hand, in this configuration, by providing a plurality of auxiliary frame bodies, it is possible to obtain a necessary supporting strength while using a small member that does not sacrifice the storage capacity as the frame body or the auxiliary frame body. You can

  In the present invention, it is preferable that the side plate be swingably opened and closed about a longitudinal axis.

  According to this configuration, since the side plate is switched by swinging about the longitudinal axis, the load of the side plate can be switched while being supported by the swing support portion. For example, as compared with a configuration in which the side plate is removed from the grain tank to switch to the maintenance state, and the side plate is attached to the grain tank to switch to the storage state, switching work between the storage state and the maintenance state of the side plate is performed. Can be performed easily with a small load.

  When the side plate is swung around the axis of the vertical axis and switched to the maintenance state, there is no obstruction on the lower side or the upper side of the opening formed by switching the side plate to the maintenance state, and the operator passes the grain through the opening. Easy access to the inside of the grain tank.

  In the present invention, it is preferable that the side plate constitutes a side portion of the outer peripheral portion of the grain tank on the outer side of the fuselage.

  According to this configuration, since the side plate located outside the machine body of the grain tank is opened, an operator who performs maintenance work can easily access the inside of the tank from a position that is opened in a state of facing the machine outside. The work can be done efficiently.

In the present invention, a grain tank for storing the harvested grains in the internal storage space is provided,
A side plate in the grain tank is in a storage state in which the storage space is closed to enable storage of grains and a maintenance state in which the storage space is opened to the outside to enable access to the storage space. It is provided to be switchable,
The grain tank includes the side plate and a tank main body other than the side plate,
A connecting device for connecting the side plate switched to the storage state to the tank main body,
The connecting device is provided on one of the tank body and the side plate, and a frame provided on the other of the tank body and the side plate and to which the engaging member engages. With a body,
The connecting device is provided with an operation lever and a rotating shaft that supports the operation lever so that the operation lever can swing.
The locking member is integrally and rotatably connected to the rotation shaft, and is in a locked state in which the locking member is locked to the frame body by the rotation of the rotation shaft accompanying the swing operation of the operation lever. It is configured to switch to the released state to release the stop,
The side of the tank body and the side plate on which the locking member is provided is movably supported only in the vertical direction, and is movable in the vertical direction as the rotary shaft rotates. A rod interlockingly connected to the moving shaft is provided,
An inclined guide member is provided on a side of the tank body portion and the side plate on which the frame body is provided,
It is preferable that the rod is slidably guided by the inclined guide member, and when the operating lever is operated so that the locking member is in the locked state, the side plate is pulled toward the tank main body side. is there.

  According to this configuration, when the operation lever is operated, the switching operation of the locking member is performed along with it, and the rod moves in the up-down direction. When the operation lever is operated so that the locking member is in the locked state, the rod is slid and guided by the inclined guide member, and an operating force that pulls the side plate toward the tank main body portion acts. As a result, the side plate and the tank main body are pressed against each other, and the contact portions are brought into close contact with each other.

  Therefore, the side plate and the tank body are connected together with the operation of the operation lever, and the side plate and the tank body are brought into close contact with each other to form a substantially hermetically closed space inside the tank.

  In the present invention, it is preferable that the tilt guide member is capable of changing and adjusting the positions of the tank main body and the side plate in the approaching / separating direction.

  According to this configuration, by adjusting the position of the tilt guide member, the movement operation amount in the approaching / separating direction between the side plate and the tank body accompanying the vertical movement of the rod, in other words, when the side plate is pulled toward the tank body portion side. Can be adjusted to an appropriate amount.

In the present invention, a quality measuring device for measuring the quality of the grain is provided inside the grain tank,
It is preferable that the quality measuring device is supported by the frame body.

  According to this configuration, the quality of the grain that is harvested and stored in the grain tank can be measured by the quality measuring device. Since the quality measuring device is supported by using the frame body having a large supporting strength, the quality measuring device can be supported in a stable state inside the grain tank.

It is the whole side view of a combine. It is a whole top view of a combine. It is a partial longitudinal rear view of a grain tank. It is a partial transverse top view of a grain tank. It is a perspective view of a grain tank in a maintenance state. It is a side view of a tank main body. It is a longitudinal rear view of the grain tank in the state where the right side wall is opened. It is a vertical section rear view of a grain tank in the state where the right side wall part is closed. It is a cross-sectional top view of a grain tank. It is a vertical section rear view of a right side wall part. It is a side view of a right side wall part. It is a perspective view which shows the support state of a quality measuring device. It is a perspective view of the upper part of an opening-and-closing wall part. FIG. 6 is an exploded perspective view of an operating lever arrangement portion. It is a vertical cross-sectional rear view which shows the mounting state of a toggle spring. It is a vertical section rear view showing a locking guide. It is a vertical section rear view showing a locking guide. It is a cross-sectional top view of the right side wall part of another embodiment. It is a flow chart of control operation of another embodiment.

  Hereinafter, a case where the embodiment of the present invention is applied to a self-removing combine will be described with reference to the drawings.

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

  In this embodiment, when defining the anteroposterior direction of the aircraft, it is defined along the aircraft advancing direction in the working state, and when defining the lateral direction of the aircraft, the left and right are defined in the state seen in the aircraft advancing direction view. . That is, the direction indicated by the symbol (F) in FIGS. 1 and 2 is the front side of the machine body, and the direction indicated by the symbol (B) in FIGS. 1 and 2 is the rear side of the machine body. The direction indicated by the symbol (L) in FIG. 2 is the left side of the machine body, and the direction indicated by the symbol (R) in FIG. 2 is the right side of the machine body.

  The reaper 3 is provided with a weeding tool 10 that guides a plant source of the planted grain culm to be reaped, and a plurality of raising devices 11 that cause the planted grain culm that has been culled to be in a vertical posture. A hair clipper-type cutting device 12 for cutting the root of the planted grain culm, and a vertical transport for transporting the harvested grain culm backward while changing its posture so that it gradually falls from the vertical posture to the threshing device 6. The device 13 and the like are provided. The upper side of the vertical transport device 13 is covered with a dustproof cover 14.

  Although not shown, the threshing device 6 performs threshing processing by handling the tip side in the handling room while sandwiching and transporting the stock side of the supplied cut culm by the threshing feed chain. The processed product after the threshing process is sorted into grains, straw scraps and the like in the sorting section below. The grains are carried out to the outside on the right lateral side of the threshing device 6 by a not-shown most-conveying screw, and then are lifted by the lifting grain conveyor 15 and transported into the grain tank 7. The grain tank 7 stores the grains fed from the threshing device 6. Thereafter, the grain stored in the grain tank 7 is carried out to the outside by the grain discharging device 9.

  The bottom of the grain tank 7 is provided with a bottom screw 16 that rotates around the axis of the front-back direction and stores the stored grains toward the rear side of the machine body. The grain discharging device 9 receives a grain discharged from the bottom screw 16 and conveys the grain upward, and a vertical feed screw conveyor 17 and a base end connected to the upper end of the vertical feed screw conveyor 17. And a horizontal feed screw conveyor 19 that conveys the grains in the horizontal direction from the discharge section 18 to the discharge port 18 at the tip.

[Quality measuring device]
Inside the grain tank 7, a quality measuring device 20 for measuring the quality of grain is provided.
As shown in FIG. 3, the quality measuring device 20 measures the quality by temporarily measuring the grain stored in the temporary storage unit 21 and the temporary storage unit 21 that temporarily stores the grain to be measured. The measuring part 22 which measures is provided. As shown in FIG. 3, the temporary storage unit 21 is located on the inner side of the grain tank 7, and the measuring unit 22 is located on the outer side of the grain tank 7. The measuring unit 22 is housed inside a storage case 23 formed in a hermetically sealed manner. The temporary storage part 21 is provided with a substantially rectangular tubular storage case 24 integrally connected to the inner side surface of the storage case 23, and can store grains therein.

  In the temporary storage part 21, a vertically-directed passage 25 is formed in the storage case 24 so as to penetrate in the vertical direction, and the temporary storage portion 21 is closed in a horizontal position to close the middle of the vertically-directed passage 25 (see FIG. 3) and in a vertical position. Is provided with a shutter plate 26 whose posture can be changed to an open state (not shown) that opens the vertical passage 25, and an operation unit 27 which changes the posture 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 that is lifted by the fried grain conveyor 15 and conveyed to the inside of the grain tank 7.

  The fried conveyor 15 feeds the grains to the vicinity of the upper end by the screw conveyer 28, and then the feed blades 29 provided at the upper end feed the grains through the opening 30 formed in the grain tank 7 to the tank. It is released inward. Some of the grains released by the delivery blade 29 are supplied to the temporary storage unit 21.

  The temporary storage unit 21 receives the released grains and stores the grains in the storage space 31 formed in the upper portion of the shutter plate 26 while the shutter plate 26 is switched to the closed state. You 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 measurement unit 22 irradiates the grain stored in the storage space 31 with light, and measures the internal quality of the grain by a known spectral analysis method based on the light obtained from the grain. To do. A window portion 32 through which light can be transmitted is formed on the side surface on the side of the measurement portion 22 of the side surfaces forming the storage space 31, and the measurement portion 22 irradiates the grain with light through the window portion 32, and Receives 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 includes a vertically oriented front wall portion 33 located on the front side, a vertically oriented rear wall portion 34 located on the rear side, and an upper end portion of the front wall portion 33. And an upper connecting portion 35 in the form of a vertically oriented plate connected to the upper end portion of the rear wall portion 34, a lower connecting portion 36 connected to the lower end portion of the front wall portion 33 and the lower end portion of the rear wall portion 34, the left side of the fuselage. Each of the inner wall portions 37 is located on the inner side of the tank and extends vertically, and the outer wall portion 38 is located on the right side of the machine body (outer side of the tank) and extends vertically. The lower connecting portion 36 has a substantially L-shaped cross-sectional shape when viewed in the front-rear direction, and includes a vertical surface portion and a horizontal surface portion.

  The inner wall portion 37 is provided in a flat plate shape, and is integrally connected along the tank inner side end edges of the front wall portion 33 and the rear wall portion 34. The outer wall portion 38 has bent surfaces on both front and rear sides and is formed in a substantially U shape in a plan view. The outer side wall portion 38 is connected to the front wall portion 33 and the rear wall portion 34 by fastening the bolts Bo at a plurality of positions on the front and rear side bent surfaces. A lower bent surface for forming a bottom surface of the storage space is formed integrally with the lower portion of the outer wall portion 38 so as to be continuous with the horizontal surface portion of the lower connection portion 36. The outer wall portion 38 can be removed by loosening the bolts Bo at a plurality of locations. When the outer wall portion 38 is removed, the inside of the storage case 23 is opened, and the quality measuring device 20 can be inspected.

Each of the front wall portion 33, the rear wall portion 34, the upper connecting portion 35, and the lower connecting portion 36 in the storage case 23 forms a frame-shaped vertically oriented frame 39. In addition to the front wall portion 33 and the rear wall portion 34 that form the up-down frame 39, the inner wall portion 37 and the outer wall portion 38 supported by the up-down frame 39 respectively form a sealed storage space. Are formed. The quality measuring device 20 is housed in the frame of the vertically oriented frame 39 by being connected to the inner wall portion 37.
The support structure of the storage case 23 for the grain tank 7 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 of each of the left side surfaces 43 is surrounded. The upper side is covered by the upper side surface 44. Therefore, a grain storage space Q is formed by being surrounded by each of the front side surface 40, the rear side surface 41, the right side surface 42, the left side surface 43, and the upper side surface 44.

  A storage state in which a part of the right side wall portion 45 (the opening / closing wall portion 50 described later) that constitutes the right side surface 42 of the grain tank 7 closes the storage space Q to enable storage of the grains, and the storage state It is provided so that the space Q is opened to the outside and can be switched to a maintenance state in which a worker can access the storage space Q.

  As shown in FIG. 5, the other side surfaces of the grain tank 7 except the right side surface 42, that is, 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, a left wall 47 of the tank body 46, which constitutes the left side surface 43, is formed with a recess 48 for disposing the fried food conveyor 15 in the inserted state.

  The right side wall portion 45 of the grain tank 7 is located in a state of facing the right lateral side outward of the traveling machine body 2. The right side wall portion 45 is capable of opening a region in a range from an upper portion to a lower portion and a front portion to a rear portion. That is, as shown in FIGS. 5 and 7, an opening 49 is formed in the right side wall portion 45 in a state of being wide open so as to open a region in a range from the upper portion to the lower portion and from the front portion to the rear portion. There is. The opening 49 that is largely open in this way is closed by an openable / closable 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 an opening / closing wall portion 50 and a frame-shaped portion 51 surrounding the opening 49, and the frame-shaped portion 51 is connected to another side surface. , And constitutes a part of the tank body 46. As shown in FIG. 8, the opening / closing wall portion 50 is switched to the storage state, and the opening / closing wall portion 50 and the frame-shaped portion 51 are integrally connected as described later, thereby configuring the right side wall portion 45. .

  As shown in FIG. 5, the opening / closing wall portion 50 is supported by the tank main body portion 46 so as to be capable of swinging and opening / closing around the axis Y1 of the vertically oriented support shaft 52 located behind the grain tank 7. At the right end portion of the rear side wall portion 53 that constitutes the rear side surface 41 of the tank body portion 46, two rotation support portions 54 are provided at intervals in the vertical direction. The rotation support portion 54 includes a support base 55 protruding rearward, and a vertical support shaft 52 extending upward from the support base 55.

  A pivot bracket that is substantially U-shaped in side view is formed with an engaging hole that engages with the vertically oriented support shaft 52 from above from a position corresponding to the rotation support portion 54 in the opening / closing wall portion 50. 57 are connected. The pivot brackets 57 on both the upper and lower sides are fitted and engaged with the vertical support shaft 52 so that the opening / closing wall portion 50 is swingably supported around the axis Y1 of the vertical support shaft 52. There is.

  Next, a structure for reinforcing the strength of the tank body 46 will be described.

  As shown in FIGS. 5, 6 and 9, a front-rear frame 58 is provided as a frame body extending in the machine front-rear direction across the front part and the rear part of the tank main body 46. The front-rear frame 58 is formed in a cylindrical shape, and is provided so as to extend over a front side wall portion 59 that forms the front side surface 40 and a rear side wall portion 53 that forms the rear side surface 41 of the tank body 46. . The front-rear frame 58 is provided in a state of being located in 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 of the front-rear frame 58 is provided so as to be inserted through the front side wall 59 and exposed to the outside of the front side. A rear end of the front-rear frame 58 is provided so as to be inserted through the rear side wall portion 53 and exposed to the outside of the rear side. The front-rear frame 58 is held in a position in which the front side wall portion 59 and the rear side wall portion 53 are respectively inserted, and the detachment prevention pin (not shown) prevents the frame from coming off.

  A plurality of auxiliary frame bodies that extend in different directions from the front-rear direction frame 58 and that connect the left-side wall portion 47 as a planar tank structure different from the opening / closing wall portion 50 and the front-rear direction frame 58 are provided. There is.

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

  Further, a second auxiliary frame 62 made of a band plate material is provided as an auxiliary frame body that connects the front-rear center portion of the front-rear frame 58 and the lower side portion of the left side wall portion 47. The second auxiliary frame 62 is provided across the lower end portion of the storage case 23 that stores the quality measuring device 20 and the lower side portion of the left side wall portion 47. To explain further, as shown in FIGS. 3 and 8, a bracket 63 is integrally provided on the lower portion of the storage case 23. Further, a reinforcing member 64 having an L-shaped cross section is connected to a lower side portion of the left side wall portion 47. One end of the second auxiliary frame 62 is fastened and connected to the bracket 63 with a bolt Bo. The other end of the second auxiliary frame 62 is fastened and connected to the reinforcing member 64 with a bolt Bo.

  As described above, since the front-back facing frame 58, the two first auxiliary frames 61 and the one second auxiliary frame 62 are provided, the support strength of the tank main body portion 46 in which the right side wall portion 45 is largely opened is increased. be able to. In addition, since the front-side wall portion 59 and the rear-side wall portion 53 are connected to each other by the front-rear frame 58, the front-side wall portion 59 and the rear-side wall portion 53 have a force so that the weight of the grain extends outward. Even if it receives, the force can be received by the front-back frame 58 and deformation can be prevented. As shown in FIG. 8, even if the upper side portion of the left side wall portion 47 receives a force so as to project outward due to the weight of the grain, the first auxiliary frame 61 can receive the force and prevent the deformation. . Similarly, the lower side portion of the left side wall portion 47 can be prevented from being deformed by the second auxiliary frame 62.

The support structure of the storage case 23 that stores the quality measuring device 20 will be described.
A lower portion of the vertically oriented frame 39 in the storage case 23 is placed and supported in a state of being engaged with the longitudinally oriented frame 58. That is, as shown in FIG. 3, engagement recesses 65 that engage with the front-rear frame 58 are formed at the lower ends of the front wall portion 33 and the rear wall portion 34. The engaging recesses 65 of the front wall portion 33 and the rear wall portion 34 can be received and supported by the front-rear direction frame 58 while being engaged with the front-rear direction frame 58 from above.

  The upper part of the vertical frame 39 is connected to the upper part of the grain tank 7. That is, as shown in FIGS. 3, 6 and 8, the upper connecting portion 35 is located inside the tank at the upper edge portion 51 a of the frame-shaped portion 51 around the opening 49 in the right side wall portion 45 of the grain tank 7. The front and rear parts are fastened with bolts Bo in a state of being pressed from the side and connected.

  Next, the structure for reinforcing the strength of the opening / closing wall portion 50 will be described.

  As shown in FIG. 8, the opening / closing wall portion 50 is formed in a gentle arc shape when viewed in the front-rear direction. As shown in FIGS. 5, 10 and 11, an upper reinforcing member 67 is provided at an upper portion of the opening / closing wall 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 side reinforcing member 67 is integrally connected to the wall surface of the opening / closing wall portion 50 over the entire front-rear direction. The upper side reinforcing member 67 and the wall surface of the opening / closing wall portion 50 form a rectangular tubular frame body 68. At the rear end portion of the opening / closing wall portion 50, a rectangular tubular vertical reinforcing member 69 for supporting the entire opening / closing wall portion 50 via pivot brackets 57 on both upper and lower sides is provided.

  A lower side reinforcing member 70 is provided at a lower side portion of the opening / closing wall portion 50 on the inner side of the tank. 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 opening / closing wall portion 50 over the entire front-rear direction.

  An inclined guide body 71 is provided on the upper side of the lower side reinforcing member 70. The inclined guide body 71 includes an inclined surface 71 a that guides the stored grains by flowing down around the upper side of the lower side reinforcing member 70 toward the lower bottom screw 16. Intermediate upper and lower intermediate portions of the opening / closing wall portion 50 on the inner side of the tank are provided with intermediate reinforcing members 72 formed by bending a plate material into a substantially mountain shape and extending in the front-rear direction. The intermediate side reinforcing member 72 is integrally connected to the wall surface of the opening / closing wall portion 50 over the entire front-rear direction.

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

  As shown in FIGS. 5 and 11, the upper reinforcing member 67 is provided over the entire width of the opening / closing wall portion 50 in the front-rear direction. The intermediate-side reinforcing member 72, the inclined guide body 71, and the lower-side reinforcing member 70 are provided over the second vertical support plate 74 and the vertical reinforcing member 69, respectively.

Next, a connection structure for connecting the opening / closing wall 50 to the tank body 46 will be described.
A connecting device 76 that connects the swing-side end of the open / close wall 50 in the storage state to the tank body 46 is provided. As shown in FIGS. 7, 8 and 10, the connecting device 76 includes a front-rear frame 58 provided on the tank main body 46 and a locking member 77 provided on the opening / closing wall 50 and locked to the front-rear 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 frame 58 and a released state in which the locking is released. The front-rear frame 58 is provided on one side of the grain tank 7 on the side where the quality measuring device 20 is provided. As shown in FIG. 10, the locking member 77 is composed of a hook-shaped member having a substantially U-shaped locking groove 79.

The switching operation mechanism 78 can be switched between a locked state in which the locking member 77 is hooked and locked on the front-rear frame 58 and a released state in which the locking is released by swinging the operation lever 80 as an operating tool. Is configured. As shown in FIGS. 4, 10, and 11, the switching operation mechanism 78 includes a rotation shaft 81 that supports the operation lever 80 so that the operation lever 80 can swing, and the locking member 77 can rotate integrally with the rotation shaft 81. Are linked to. The locking member 77 switches between a locked state and a released state by the rotation of the rotary shaft 81 associated with the swing operation of the operation lever 80.

  The rotating shaft 81 is provided at a position close to the inside of the tank of the opening / closing wall portion 50 and extends in the front-rear direction across the front-rear intermediate portion and the front portion of the opening-closing wall portion 50. The rotation shaft 81 is inserted through insertion holes (not shown) formed in the second vertical support plate 74 and the third vertical support plate 75, respectively, and the second vertical support plate 74 and the second vertical support plate 74 are inserted. It is rotatably supported by three vertical support plates 75.

  As shown in FIG. 4, a cylindrical shaft portion 82 integrally connected to the locking member 77 is provided at the both front and rear end portions of the rotating shaft 81 so as to be externally inserted. As shown in FIG. 14, the support shaft portion 84 of the operation lever 80 made of an L-shaped rod is inserted and attached to the cylindrical shaft portion 82 located at the front end of the rotating shaft 81. A retaining pin 83 is attached to the support shaft portion 84 and the cylinder shaft portion 82 of the operation lever 80 to prevent the support lever 84 from coming off and to rotate integrally with the support shaft portion 84 and the cylinder shaft portion 82. Has become. Also at the rear end of the rotating shaft 81, a retaining pin 83 is attached across the rotating shaft 81 and the cylindrical shaft portion 82 to prevent the retaining pin 83 from coming off and to rotate integrally. It is provided. As shown in FIG. 4, the cylinder shaft portion 82 located on the front side contacts the second vertical support plate 74, and the cylinder shaft portion 82 on the rear side contacts the third vertical support plate 75. Thus, the rotation shaft 81 is prevented from coming off.

  As shown in FIG. 14, the operation lever 80 is provided in a state of being located between the first vertical support plate 73 and the second vertical support plate 74. Of the wall portion of the opening / closing wall portion 50, a removable lid body 85 (see FIG. 1) is provided at a position corresponding to the operation lever 80 between the first vertical support plate 73 and the second vertical support plate 74. ), An opening 86 is formed. When the lid 85 is removed, the operation lever 80 faces the outside 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 operating lever 80 is switched to the vertical posture positioned inside the opening / closing wall portion 50, the locking member 77 locks on the front-back frame 58. The swing-side end of the open / close wall 50 in the storage state and the tank body 46 are connected. As shown by the white arrow in FIG. 14, when the operation lever 80 is manually pulled outward through the opening 86 and the operation lever 80 is switched to the inclined posture, the locking member 77 causes the front-rear frame. The lock with respect to 58 is released, and the connection between the swing-side end of the opening / closing wall 50 and the tank body 46 is released.

  As shown in FIGS. 4 and 15, a toggle spring 87 is stretched over the rear side locking member 77 and the third vertical support plate 75. When the operation lever 80 is switched to the vertical posture, the toggle spring 87 is located below the axis of the rotation shaft 81 in the front-back direction, and the locking member 77 is urged to rotate downward. To do. As a result, the locking member 77 is maintained in a state of being locked to the front-rear frame 58. On the other hand, when the operation lever 80 is switched to the inclined posture on the outer side, the toggle spring 87 is positioned above the axis of the rotating shaft 81 in the front-rear direction, and the locking member 77 is directed upward. Energize the rotation. As a result, the locking member 77 is maintained in the released state separated from the front-rear frame 58.

  When the locking member 77 is locked to the front-rear frame 58, even if the opening / closing wall 50 receives a force so as to project outward due to the weight of the grain, the front-rear frame 58 receives the force and deforms. Can be prevented. Further, the front-back facing frame 58 and the frame-shaped portion 51 around the opening 49 in the right side wall portion 45 are connected via the up-down facing frame 39. As a result, as shown in FIG. 8, the front-rear frame 58 is supported 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. Since they are held, they can be received by each other in a state in which the loads on the respective side surfaces of the grain tank 7 are dispersed, and the supporting strength can be improved.

  The switching operation mechanism 78 has a configuration for holding the opening / closing wall portion 50 in a stored state and pulling the opening / closing wall portion 50 toward the tank main body portion 46 side so as to eliminate a gap and enhance the closing property of the storage space. . The configuration will be described below.

  As shown in FIGS. 7, 8, 10, and 11, the opening / closing wall portion 50 is supported so as to be movable only in the vertical direction, and is rotatable in the vertical direction as the rotating shaft 81 is rotated. A plurality of rods 88 linked to 81 are provided, and a plurality of tilt guide members 89 are provided on the tank main body 46. Then, when the operation lever 80 is switched from the tilted posture to the vertical posture so that the locking member 77 is brought into the locked state, the rod 88 is slidably guided by the tilted guide member 89 to open and close the opening / closing wall portion. It is configured to draw 50 toward the tank body 46 side.

  To add a description, a total of four rods 88 are provided at the positions corresponding to the front and rear ends of the rotating shaft 81 and at the upper side portion and the lower side portion of the opening / closing wall portion 50 in a side view. It is provided so that it can only move in the vertical direction.

  As shown in FIGS. 10 and 11, the second vertical support plate 74 and the third vertical support plate 75 each have an insertion hole through which the rod 88 is inserted in the upper middle part thereof. 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 so as to pass through the through holes formed in each of the upper side supporting member 90 and the upper side reinforcing member 67, and are supported so as to be movable only in the vertical direction.

  As shown in FIGS. 10 and 11, there is provided a lower side support member 91 which is formed in a substantially U shape in the front-rear direction and has an insertion hole through which the rod 88 is inserted. The lower side supporting member 91 is connected to the lower side reinforcing member 70 and the slant guide body 71. The two rods 88 located on the lower side are provided so as to pass through the through holes formed on both 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 operating body 92 that rotates integrally with the rotating shaft 81 is connected to a cylindrical shaft portion 82 that is externally inserted at both front and rear ends of the rotating shaft 81. The operating body 92 is provided at a front-rear intermediate side portion of the front and rear cylindrical shaft portions 82. That is, the front-side operation body 92 is provided at the rear end of the front-side cylinder shaft portion 82. The operation body 92 on the rear side is provided at the front end of the cylindrical shaft portion 82 on the rear side.

  The operating body 92 includes a first arm portion 92A that extends radially outward from the rotating shaft 81, and a second arm portion 92B that extends radially outward in a direction opposite to the first arm portion 92A. ing. The outer end of the first arm portion 92A and the upper rod 88 are pivotally connected by a link member 93. The outer end of the second arm portion 92B and the lower rod 88 are pivotally connected by a link member 93. The rotation shaft 81 rotates in accordance with the operation of the operation lever 80, 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 tilt guide members 89 are provided in the frame-shaped portion 51 of the tank main body 46 at positions where the rod 88 slides. The two inclined guide members 89 located on the upper side are provided at locations outside the tank in the frame-shaped portion 51. The two inclined guide members 89 located on the lower side are provided inside the tank in the frame-shaped portion 51. The two inclined guide members 89 located on the upper side are provided with inclined surfaces whose lower ends are located away from the frame-shaped portion 51 and which approach the frame-shaped portion 51 toward the upper side. The two inclined guide members 89 located on the lower side are provided with an inclined surface whose upper end is located away from the frame-shaped portion 51 and which is closer to the frame-shaped portion 51 as it goes downward.

  As shown in FIGS. 6 and 10, each of the plurality of tilt guide members 89 is integrally provided with two screw shaft portions 89a that insert the frame-shaped portion 51, and is tightened with nuts 89b that are screwed to the screw shafts 89a. And is fixed to the frame-shaped portion 51. The inclination guide member 89 is provided so that the position of the tank body 46 and the opening / closing wall 50 in the approaching / separating direction can be changed and adjusted by changing the tightening position of the screw shaft 89a with the nut 89b with respect to the frame-shaped portion 51. Has been.

  When the operation lever 80 is switched to the vertical posture, 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 an upper tilt guide member 89 provided on the tank body 46, and the lower rod 88 is slid on a lower tilt guide member 89 provided on the tank body 46. You will be notified. By the sliding guide of the rod 88 and the tilt guide member 89, the opening / closing wall portion 50 and the tank main body portion 46 are relatively displaced, and the opening / closing wall portion 50 is drawn toward the tank main body portion 46. As a result, the opening / closing wall portion 50 and the frame-shaped portion 51 around the opening 49 of the tank body portion 46 are in close contact with each other, and the grain can be stored.

By providing the connecting structure for connecting the opening / closing wall portion 50 to the tank main body portion 46 as described above, the opening / closing wall portion 50 is brought into a closed state and comes into close contact with the frame-shaped portion 51, thereby opening / closing the wall portion. 50 is switched to the storage state. Therefore, in the right side wall portion 45, not only the opening / closing wall portion 50 and the frame-shaped portion 51, but also a connecting structure for connecting the opening / closing wall portion 50 to the tank main body portion 46, that is, the front-back facing frame 58, the locking member 77. A switching operation mechanism 78 and the like are also included. The contact point between the opening / closing wall section 50 and the frame-shaped portion 51, that is, the contact point between the upper side reinforcing member 67 and the frame-shaped section 51, and the contact point between the lower side reinforcing member 70 and the frame-shaped section 51, It is advisable to interpose a seal member. The sliding guide structure between the rod 88 and the upper tilt guide member 89 and the mechanism in which the upper side reinforcing member 67 and the frame-shaped portion 51 contact each other correspond to the upper connecting mechanism, and the rod 88 and the lower tilt guide are provided. The sliding guide structure with the member 89 and the mechanism in which the lower side reinforcing member 70 and the frame-shaped portion 51 contact each other correspond to the lower connecting mechanism.

  When the operating lever 80 is switched to the inclined posture (the phantom line in FIG. 10), the locking member 77 is in the released state as shown by the phantom line in FIG. Along with this, as shown in FIG. 7, the upper rod 88 moves downward via the operating body 92 and the link member 93, and the engagement with the tilt guide member 89 is released. It moves upward and the engagement with the tilt guide member 89 is released. As a result, the opening / closing wall part 50 is switched to the closed state, and the right side wall part 45 is switched to the maintenance state.

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

  Since the opening / closing wall portion 50 is configured to be supported in a cantilever manner around the longitudinal axis Y1 on the rear side, the rocking end side is more slanted than the base end side due to backlash at the pivotal support portion or wear accompanying use. There is a risk of falling a little and becoming an oblique posture. Therefore, a mechanism is provided for lifting and guiding the swinging end side of the opening / closing wall portion 50 to an appropriate position when switching to the storage state in response to such a posture change.

  That is, as shown in FIG. 10, when the lower side reinforcing member 70 in the opening / closing wall section 50 is switched to the storage state, the lower side reinforcing member 70 comes into contact with the lower edge of the frame-shaped portion 51 and comes into contact with honey. The portion of the lower side reinforcing member 70 that comes into contact with the lower edge of the frame-shaped portion 51 is in an inclined posture such that it is positioned higher toward the inside of the tank. With this configuration, for example, even when the swing end side of the opening / closing wall portion 50 is slightly lower than the base end side and is in an oblique posture, the opening / closing wall portion 50 is switched to the storage state and the switching operation mechanism. When the connecting operation by 78 is performed, the inclined surface of the lower reinforcing member 70 rides on the lower edge of the frame-shaped portion 51, and the open / close wall 50 can be lifted and guided to an appropriate position.

Next, a cooling air guide path for cooling the quality measuring device 20 will be described.
A large amount of light is required for the measuring light applied to the grain in the quality measuring device 20. A light source that projects such a large amount of light (for example, a halogen lamp) also has a large amount of heat generation. Therefore, a cooling air guide path for taking in the outside air and discharging the high temperature air in the storage case 23 to the outside is provided.

  As shown in FIGS. 12 and 13, an inlet 96 for introducing air for cooling the quality measuring device 20 and a quality measuring device on one side of the grain tank 7 where the quality measuring device 20 is provided. A discharge port 97 for discharging the air after cooling the device 20 is provided. The introduction ventilation path 98 that connects the introduction port 96 and the quality measuring device 20 to each other and the discharge ventilation path 99 that connects the discharge port 97 to the quality measuring device 20 that communicate with each other are among the outer peripheral portions of the grain tank 7. Is provided along the right side wall portion 45 as a side wall portion on the side where the quality measuring device 20 is provided.

  The storage case 23 is connected to the air introduction opening 101 connected to the ventilation opening 100 formed in the introduction ventilation path 98 and the ventilation opening 105 formed in the discharge ventilation path 99. An opening 103 for exhaust is formed. The front-rear frame 58, which is a main body-side hollow frame provided in the tank main body 46, constitutes an introduction ventilation path 98. An exhaust ventilation path 99 is configured by the rectangular tubular frame body 68 as a hollow frame on the side plate side provided in the opening / closing wall portion 50, and the introduction ventilation path 98 and the exhaust ventilation path 99 are provided in the storage case 23. Through the.

  3 and 12, in the lower part of the storage case 23, there is provided a communication cylinder portion 104 that connects the internal space of the storage case 23 and the internal space of the front-rear frame 58 to each other. . The upper end of the communication cylinder 104 is open to the internal space of the storage case 23. The communication cylinder 104 is vertically inserted through the horizontal surface portion of the lower connecting portion 36, and is connected to the horizontal surface portion in an airtight state. The lower end of the communication cylinder 104 is open to the internal space of the front-rear frame 58. The communication cylinder 104 is inserted into the front-rear frame 58 and is connected to the front-rear frame 58 in an airtight state.

  The internal space of the storage case 23 and the internal space of the front-back facing frame 58 are communicatively connected to each other by the communication cylinder 104. Therefore, an opening 101 for introducing air is formed at the upper end of the communication cylinder 104, and an opening 100 for ventilation is formed at the lower end of the communication cylinder 104.

  As shown in FIG. 12, both longitudinal end edges of the front-rear frame 58 are open to the outside. As shown in FIGS. 3 and 12, the upper side portion of the outer side wall portion 38 of the storage case 23 is provided in a state of being arranged substantially vertically on the same plane with respect to the upper connecting portion 35. A plurality of exhaust openings 103 are formed in the upper side portion of the outer wall portion 38.

  As shown in FIG. 3, when the opening / closing wall part 50 is in the storage state, that is, when the opening / closing wall part 50 is in the closed state, the rectangular tubular frame of the upper side part of the outer wall part 38 and the opening / closing wall part 50. The body 68 comes into contact with the body 68. As shown in FIG. 13, in the rectangular tubular frame body 68 of the opening / closing wall portion 50, a plurality of openings 105, 106 are provided in the inner side surface 68 a and the upper side surface 68 b, which contact the upper side portion of the inner side wall portion 37. Are formed. The opening 105 of the inner side surface 68 a is formed at a position facing the opening 103 formed at the upper side portion of the outer wall portion 38. Therefore, when the opening / closing wall part 50 is in the storage state, the opening 105 formed in the inner side surface 68 a of the rectangular tubular frame body 68 and the opening 103 formed in the upper side part of the outer side wall part 38 communicate with each other. Connected.

  Although not shown, the quality measuring device 20 is provided with a fan for ventilation, and when the fan operates, air is sucked from the lower part of the storage case 23 and discharged from the upper part of the storage case 23 to the outside. The ventilation passage is formed like this. When the fan operates, the outside air is sucked into the storage case 23 from the openings 107 at both longitudinal end edges of the front-rear frame 58 through the internal space of the front-rear frame 58 and the communication cylinder 104. The air in the storage case 23 has an opening 103 formed at an upper side portion of the outer wall portion 38, an opening 105 formed on an inner side surface of the rectangular tubular frame body 68, and an internal space of the rectangular tubular frame body 68. , And is discharged to the outside through an opening 106 formed in the upper side surface of the rectangular tubular frame body 68. The air that has passed through the inner space of the rectangular tubular frame body 68 is discharged to the outside through not only the opening 106 but also the openings 108 formed at both longitudinal ends of the rectangular tubular frame body 68 (FIG. 13). reference).

  Therefore, the openings 107 on both side edges in the longitudinal direction of the front-rear frame 58 correspond to the introduction ports 96, and the inner space of the front-rear frame 58 corresponds to the introduction ventilation passage 98. The opening 106 and the opening 108 in the rectangular tubular frame body 68 correspond to the discharge port 97, and the internal space of the rectangular tubular frame body 68 corresponds to the exhaust ventilation path 99.

  When the grain is stored in the grain tank 7 in association with the mowing operation, the pressure inside the storage space Q increases with the storing operation, so it is necessary to discharge the air in the tank to the outside. The air in the storage case 23 can be discharged to the outside by using this air discharging operation. That is, as shown in FIG. 12, a check valve V that allows ventilation from outside the case to inside the case and prohibits ventilation from inside to the outside of the case is provided on the front side of the storage case 23. When the pressure inside the storage space Q becomes high, the air in the tank is discharged from the storage case 23 to the outside through the check valve V.

  When the swing end side of the opening / closing wall portion 50 is slightly lowered as compared to the base end side and the posture changes to an oblique posture, the swing end side of the opening / closing wall portion 50 is lifted and guided to an appropriate position when switching to the storage state. As another guide mechanism for this, the following locking guide body 110 is provided.

  As shown in FIGS. 4 and 16, the locking guide body 110 is provided at a position corresponding to the front-rear frame 58 on the first vertical support plate 73 provided on the opening / closing wall portion 50. The locking guide body 110 is a plate body having an L-shaped cross section, is cantilevered from the first vertical support plate 73 toward the inner side of the tank, and is an inclined guide that acts so as to ride on the front-back frame 58. The unit 111 is provided.

  As shown in FIGS. 16 and 17, when the opening / closing 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 frame 58 to move the swinging end portion of the opening / closing wall portion 50. The guide can be lifted and guided to an appropriate position, and the position can be maintained in the stored state.

[Another embodiment]
Other embodiments will be listed below.

(1) Instead of providing the front-rear frame 58 as a frame body in the tank main body, the front-rear frame 58 may be provided in the opening / closing wall 50. The frame body extends along the front-rear direction of the machine body. However, it may extend vertically or obliquely.

(2) The opening / closing wall portion 50 as the side plate may be configured to swing around the longitudinal axis located on the front side of the machine body .

(3) As shown in FIG. 18, the frame-shaped portion 51 of the opening 49 of the tank main body portion 46 is provided with the guide portion 120 that is inclined toward the inside of the opening toward the inside of the tank, and the guide portion 120 is provided on the opening / closing wall portion 50. It may be configured to include the abutment portion 121 in an inclined posture that abuts against the. With this configuration, the sealing property can be further improved by the contact between the guide part 120 and the contact part 121 in accordance with the closing operation, and there is also an advantage that the rigidity of the whole grain tank 7 is increased.

(4) Instead of manually switching the opening / closing wall portion 50 between the storage state and the maintenance state, for example, a damper such as a gas spring may be used to assist the opening / closing operation, or a hydraulic cylinder or an electric motor. It is also possible to use an actuator such as a motor to automatically perform opening / closing operation.

(5) A configuration may be adopted in which a lock mechanism for holding the position of the opening / closing wall portion 50 in the state of being switched to the maintenance state is provided. As the lock mechanism, for example, in the maintenance state, a structure in which the connecting member is connected and fixed with a pin to hold the position over the opening / closing wall 50 and the tank main body 46, or a structure in which the chain is connected to hold the position, etc. There is.

(6) A sensor that detects that the opening / closing wall 50 has switched to the storage state, a sensor that detects the holding state by the locking member 77, the engagement state by the rod 88, or the like, and these sensors must be detected. For example, a configuration may be provided such as a notification unit that performs notification processing. As the notification means, a structure is used in which a lamp is lit to notify, a message is displayed and displayed by a display device capable of displaying characters, a structure in which a member touched by an operator's body is vibrated to notify, a voice or a buzzer sound It is possible to consider various configurations such as a configuration for performing notification by means of, or a configuration for providing a small window on the opening / closing wall portion 50 and performing notification by a color change. Further, as shown in FIG. 19, if the above-described detection sensor does not detect, a configuration is provided that includes a control device (not shown) that warns the operator and executes an engine restraint process that restrains the start of the engine E. May be

(7) The mounting position of the quality measuring device 20 may be configured to be adjustable in the front-back direction. For example, as shown in FIG. 12, a plurality of bolt insertion holes 122 are formed in the upper edge portion 51a of the grain tank 7 to which the upper connection portion 35 of the storage case 23 supporting the quality measuring device 20 is bolted. In addition, a plurality of connecting portions on the left side wall portion 47 side with respect to the second auxiliary frame 62 are formed at different positions, and the storage case 23 is slidably fixed in the longitudinal direction of the frame 58 in the longitudinal direction. You can do it.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a normal combine as well as a self-removing combine.

7 Grain tank 20 Quality measuring device 46 Tank main body 50 Side plate (opening / closing wall)
58 frame body (front-back frame)
61,62 Auxiliary frame body 76 Coupling device 77 Locking member
78 Switching operation mechanism 79 Locking groove 80 Operation lever (operation tool)
81 rotation axis 88 rod 89 tilt guide member Y1 vertical axis core

Claims (11)

A grain tank for storing harvested grains is provided in the internal storage space,
A storage plate in which the side plate of the grain tank oscillates about the vertical axis to close the storage space and store the grains, and the storage space is opened to the outside. It is provided so that it can be switched to the maintenance state that enables access to
The grain tank includes the side plate and a tank main body other than the side plate,
The tank body is provided with an opening formed from the upper part to the lower part of the tank body and from the front part to the rear part, and the side plate is configured to open and close the opening,
A connecting device for connecting the side plate switched to the storage state to the tank main body,
The connecting device is provided on one of the tank body and the side plate, and a frame provided on the other of the tank body and the side plate and to which the engaging member engages. A body, and is configured such that the locking member and the frame body are locked after the side plate is switched to the storage state,
Said coupling device, apart from the locking member and the frame member, and an upper coupling mechanism which contacts connecting the portion located above the opening of the upper and the tank body portion of the side plate, the lower portion of the side plate And a lower connecting mechanism for contact-connecting the tank body with a portion of the tank body located below the opening. The connecting device includes an operating tool that operates the locking member, and a switching operation mechanism that links the operating tool and the locking member.
The combine according to claim 1, wherein the upper connection mechanism and the lower connection mechanism are linked to the switching operation mechanism and are interlocked with the locking member by an operation of the operation tool. The upper coupling mechanism includes a portion located above the opening of the upper and the tank body portion of the side plate, at a plurality of locations spaced in the longitudinal direction, contact connected,
The lower coupling mechanism and a lower and portion located below the opening of the tank body portion of the side plate, at a plurality of locations spaced in the longitudinal direction, combine according to claim 1 or 2 in contact connecting .   The combiner according to any one of claims 1 to 3, wherein the frame body extends along a front-rear direction of the machine body and extends over a front portion and a rear portion of the grain tank.   The combine according to any one of claims 1 to 3, wherein the frame body is provided in the tank main body portion.   6. The tank main body portion is provided with a plurality of auxiliary frame bodies that extend in different directions from the frame body and that connect the frame body and the planar tank construction body different from the side plate. Combine as described in.   The combine according to any one of claims 1 to 6, wherein the side plate is swingably openable and closable about a longitudinal axis.   The combiner according to any one of claims 1 to 7, wherein the side plate constitutes a side portion of an outer peripheral portion of the grain tank on the outer side of the fuselage. A grain tank for storing harvested grains is provided in the internal storage space,
A side plate in the grain tank is in a storage state in which the storage space is closed to enable storage of grains and a maintenance state in which the storage space is opened to the outside to enable access to the storage space. It is provided to be switchable,
The grain tank includes the side plate and a tank main body other than the side plate,
A connecting device for connecting the side plate switched to the storage state to the tank main body,
The connecting device is provided on one of the tank body and the side plate, and a frame provided on the other of the tank body and the side plate and to which the engaging member engages. With a body,
The connecting device is provided with an operation lever and a rotating shaft that supports the operation lever so that the operation lever can swing.
The locking member is integrally and rotatably connected to the rotation shaft, and is in a locked state in which the locking member is locked to the frame body by the rotation of the rotation shaft accompanying the swing operation of the operation lever. It is configured to switch to the released state to release the stop,
The one of the tank main body and the side plate on which the locking member is provided is movably supported only in the vertical direction, and is movable in the vertical direction as the rotary shaft rotates. A rod interlockingly connected to the moving shaft is provided,
An inclined guide member is provided on a side of the tank body portion and the side plate on which the frame body is provided,
A combiner for pulling the side plate toward the tank body when the operation lever is operated such that the rod is slidably guided by the inclined guide member and the locking member is in the locked state.   The combine according to claim 9, wherein the tilt guide member is capable of changing and adjusting the positions of the tank body and the side plate in the approaching and separating directions. A quality measuring device for measuring the quality of the grain is provided inside the grain tank,
The combine according to claim 1, wherein the quality measuring device is supported by the frame body.

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