JP2021151274A - Combine-harvester - Google Patents

Abstract

To address the desire of facilitating maintenance work of the inside of a grain tank, while favorably storing harvested grain culms.SOLUTION: A lateral plate 31 in a grain tank 7 is configured to rotationally turn around a vertical axis center with respect to a tank body 32 to change over an opening 35 formed in the tank body 32 into a closed state of closing the opening and an open state opened to the outside. A seal member 81 is provided around a peripheral edge of the opening 35. A rod 69 for locking the lateral plate 31 into the closed state is configured to, as the opening changes over from the open state to the closed state, enter inside the storage space through the opening 35 until reaching a position corresponding to a locking object member 70. A combine-harvester further includes a regulation part 82 that regulates intrusion of the rod 69 into the tank inward side, when the rod 69 reaches such a position state as to come into contact with the seal member 81.SELECTED DRAWING: Figure 7

Description

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

Conventionally, the grain tank has been configured to store grains in a storage space closed by a wall body formed in a box shape (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-184768

In the above-mentioned conventional configuration, since the space is formed in the state where the grain tank is closed in a box shape, for example, dust and residual grains adhering to and accumulating on the inner wall surface of the storage space after the harvesting work is completed. There was a disadvantage that it was difficult to perform maintenance work inside the tank such as cleaning work to remove grains. In order to perform maintenance work, for example, an opening closed by an openable lid is formed on a part of the upper surface of the grain tank so that the work can be performed from the upper side of the grain tank through this opening. However, it was difficult to work from above on a large grain tank.

Therefore, in order to eliminate such a disadvantage, it is conceivable that the side portion of the grain tank can be widely opened. When the side portion is wide open in this way, there is a concern that grains may leak from the opening / closing portion.

Therefore, it has been desired to reduce the risk of grains leaking when the grain tank is in a state where it can be stored, while facilitating maintenance work inside the grain tank.

The characteristic configuration of the combine according to the present invention is that a grain tank for storing grains is provided in the internal storage space, and the side plate in the grain tank can rotate around the vertical axis core with respect to the tank main body. The side plate is supported, and by rotating around the vertical axis core, the opening formed in the side portion of the tank body is closed to allow the storage of grains, and the side plate is closed through the opening. A seal member is provided on the peripheral edge of the opening in the tank body so as to project toward the inner peripheral side, and the storage space is provided on the side plate so as to be switchable to an open state in which the storage space is open to the outside. A locking tool that locks the side plate to the closed state by locking to the locked member provided inside is provided, and the locking tool is provided as the side plate switches from the open state to the closed state. The lock tool is provided so as to be able to enter the storage space to a position corresponding to the locked member through the opening, and when the lock tool is in a position where it comes into contact with the seal member, the lock tool moves toward the inside of the tank. The point is that there is a regulatory department that regulates the entry of people.

According to the present invention, when the harvesting operation is performed, the harvested crop can be stored in the storage space inside the grain tank by switching the side plate of the grain tank to the closed state. When the harvesting work is completed, the side plate of the grain tank is switched to the open state, and the storage space is opened to the outside through the opening formed on the side, so maintenance work such as cleaning can be easily performed. Become.

A sealing member is provided on the periphery of the opening in the tank body, and it can be locked in the closed state by the locking mechanism, so there are disadvantages such as grain leaking from the gap between the side plate and the tank body and rainwater entering the inside. It is possible to store grains well. Then, since the lock tool passes in the vicinity of the seal member, the lock tool may come into contact with the seal member and cause damage. However, since the locking tool is provided with a regulating portion that regulates the entry of the locking tool into the tank when the locking tool is in contact with the sealing member, the locking tool is received by the regulating section and sealed. It does not pass as it is so as to break the member. Even if the seal member is pinched by the locking tool and the regulating portion, there is little risk of damage just by being pinched. As a result, damage to the sealing member can be prevented, and in a state where the side plate is locked in the closed state, it is possible to prevent the grains from leaking out or rainwater from entering the inside, and to maintain a state in which the grains can be stored well. Will be done.

Therefore, it has become possible to easily perform maintenance work inside the grain tank and reduce the risk of grains leaking when the grain tank can be stored.

In the present invention, it is preferable that the regulating portion is provided above the sealing member.

According to this configuration, even when the lock tool moves downward from the upper side of the seal member, the lock tool is received by the regulating portion, so that the lock tool directly collides with the seal member and is damaged. Can be prevented.

In the present invention, it is preferable that the restricting portion is formed by extending the locked member upward.

According to this configuration, since the locking tool acts to lock, the locking member provided on the tank body side is effectively utilized, and the locking member is extended upward to form the regulating portion. .. As a result, it is not necessary to provide a dedicated member for forming the regulating portion separately from the locked member, and a simple configuration can be used.

In the present invention, it is preferable that the locked member is connected and fixed by a fastener with the collar extrapolated to the wall portion where the opening is formed in the tank body.

According to this configuration, by interposing a collar having a diameter larger than that of the fastener, even if a force acts laterally on the locked member, the collar having a large diameter catches it in the widest possible range. By supporting it, it is possible to prevent deformation and damage in the fastener, the locked member, and the like.

It is an overall side view of a combine. It is the whole plan view of the combine. It is a perspective view of a grain tank. It is a perspective view of the grain tank in a maintenance state. It is a longitudinal front view of a grain tank. It is a cross-sectional plan view of a grain tank. It is a vertical sectional front view of the opening and closing wall part at the time of switching from an open state to a closed state. It is a vertical sectional front view of the opening and closing wall part in a closed state. It is a perspective view of the upper part of the front part of the opening and closing wall part.

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

〔overall structure〕
As shown in FIGS. 1 and 2, the combine according to the present invention is provided with a cutting section 3 for cutting planted culms at the front portion of a traveling machine 2 that is self-propelled by a pair of left and right crawler traveling devices 1. .. On the right side of the front portion of the traveling machine body 2, a driving unit 5 whose circumference is covered with a cabin 4 is provided. Behind the driving unit 5, a threshing device 6 for threshing the grain culms cut by the cutting unit 3 and a grain tank 7 for storing the grains obtained by the threshing process are arranged in the horizontal direction. Deployed in 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 driving 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's unit 5. A grain discharge device 9 is provided at the rear of the traveling machine 2 and behind the grain tank 7 to discharge the grains stored in the grain tank 7 to the outside of the machine. The rear part of the threshing device 6 is provided with a waste straw processing device 20 for shredding the straw.

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

The cutting unit 3 was raised by a weeding tool 10 that guides the root of the planted culm to be harvested, and a plurality of raising devices 11 that cause the planted culm to be harvested in a vertical position. Varican-type cutting device 12 that cuts the root of the planted culm, and vertical transportation that transports the harvested culm backward while changing the posture so that it gradually changes from the vertical position to the sideways position and supplies it to the grain removal device 6. The device 13 and the like are provided. The upper side of the vertical transfer device 13 is covered with a dustproof cover 14.

Although not shown, the threshing device 6 performs a threshing process by handling the tip side in a handling room while sandwiching and transporting the stock root side of the supplied harvested culm by a threshing feed chain. The processed product after the threshing treatment is sorted into grains, straw waste and the like in the lower sorting section. The grains are carried out to the outside on the right side of the threshing device 6 by a first-class transport screw (not shown), and then lifted by a grain-lifting conveyor 15 and transported to the inside of the grain tank 7. The grain tank 7 stores grains sent from the threshing device 6. After that, the grains stored in the grain tank 7 are carried out by the grain discharging device 9.

The bottom of the grain tank 7 is provided with a bottom screw 16 for transporting grains that are rotated and stored around the front-rear axial core toward the rear side of the machine body. The grain discharge device 9 receives the grains carried out from the bottom screw 16 and conveys the grains upward. The vertical feed screw conveyor 17 as a vertical transfer device, and the vertical feed screw conveyor 17 A lateral feed screw conveyor 19 for transporting grains in the lateral direction from a base end portion connected to an upper end portion to a discharge port 18 at the tip end is provided.

Although the support configuration will not be described in detail, the entire tank of the grain tank 7 is swingably supported around the vertical shaft core X, which is the rotation shaft core of the vertical feed screw conveyor 17. That is, as shown in FIGS. 1 and 2, it is possible to switch between a normal storage state in which the aircraft is stored on the side of the inside of the aircraft and a maintenance state in which the aircraft extends outward on the side of the aircraft and swings as shown in FIGS. In addition, it is supported so as to be swingable around the vertical axis X. The posture of the grain tank 7 is held by a position holding mechanism (not shown) in the stored state.

The grain-lifting conveyor 15 uses a screw conveyor 28 to lift grains to near the upper end, and then uses a feeding blade 24 provided at the upper end to feed the grains through an opening 25 formed in the grain tank 7. Release toward the inward side.

[Grain tank 7]
Next, the grain tank 7 will be described.
As shown in FIGS. 3, 5 and 6, the grain tank 7 is surrounded by the front, rear, left and right sides, and a grain storage space Q is formed. A part of the right side wall portion 30 (the opening / closing wall portion 31 described later) constituting the right side surface of the grain tank 7 is a closed state in which the storage space Q is closed to enable storage of grains, and a storage space. It is provided so as to be switchable to an open state in which the Q is opened to the outside and the worker can access the storage space Q.

The other side surfaces of the grain tank 7 other than the right side surface, that is, the front side surface, the rear side surface, the left side surface, and the upper side surface are all formed by wall members in a state of being connected in a series, and the tank main body portion. It constitutes 32. As shown in FIG. 6, the left wall portion 33 of the tank main body portion 32 is formed with a recessed portion 34 for deploying the grain raising conveyor 15 in a state of being inserted.

The right side wall portion 30 of the grain tank 7 is located so as to face the right lateral side outer side of the traveling machine body 2. The right side wall portion 30 can open a region extending from the upper part to the lower part and from the front part to the rear part. That is, as shown in FIGS. 5 and 7, an opening 35 is formed in the right wall portion 30 in a state of being greatly opened so as to open a region extending from the upper part to the lower part and from the front part to the rear part. There is. The opening 35 that is widely opened in this way is closed by an opening / closing wall portion 31 (an example of a side plate) that can be opened and closed to form a storage space Q inside.

As shown in FIG. 4, the right side wall portion 30 includes an opening / closing wall portion 31 and a frame-shaped portion 36 surrounding the opening 35, and the frame-shaped portion 36 is connected to another side surface and is a tank. It constitutes a part of the main body 32. As shown in FIG. 5, the opening / closing wall portion 31 is switched to the storage state, and the opening / closing wall portion 31 and the frame-shaped portion 36 are integrally connected as described later to form the right side wall portion 30. ..

As shown in FIG. 4, the opening / closing wall portion 31 is supported by the tank main body portion 32 so as to swing open / close around the vertical axis core Y1 located behind the grain tank 7. At the right end of the rear side wall 38 of the tank body 32, two rotation support portions 39 are provided at intervals in the vertical direction, and the rotation support portion 39 causes the opening / closing wall portion 31 to have a vertical axis core Y1. It has a structure that supports it so that it can swing around.

Next, a configuration for strengthening the strength of the tank body 32 will be described.

As shown in FIGS. 4 and 6, a front-rear frame 40 extending in the front-rear direction of the machine body is provided over the front part and the rear part of the tank main body 32. The front-rear frame 40 is formed in a cylindrical shape and is provided so as to extend over the front side wall portion 41 and the rear side wall portion 42 of the tank main body portion 32. The front-rear frame 40 is provided in a state of being located in the upper and lower middle portions of the right end portion of the machine body inside the grain tank 7.

The front-rear frame 40 and the bracket 44 attached to the left side wall 33 are attached to the front-rear frame 40 at a position closer to the front side than the front-rear center portion and at a position closer to the rear side than the front-rear center portion. A first auxiliary frame 45 made of a round bar member to be connected is provided.

As shown in FIG. 4, when the opening / closing wall portion 31 is in the open state, an opening degree holder 46 for holding the opening / closing wall portion 31 in the open state is provided. The opening degree holder 46 is a rod-shaped member whose both ends are bent, one end (support end) is held by the support plate 47, and the other end (free end) is the frame of the tank body 32. It is inserted into the hole of the connector 48 attached to the shaped portion 36 (see the virtual line in FIG. 4). As a result, the opening / closing holder 46 holds the opening / closing wall portion 31 in an open state. When the opening degree holder 46 is not used, it is held by a clip member (not shown) in a hanging posture as shown by a solid line in FIG.

Further, an opening prevention wire 50 for preventing the opening / closing wall portion 31 from opening at a predetermined angle (for example, 90 degrees) or more is provided. The release prevention wire 50 is a flexible metal wire, one end of which is connected to a connector 48 of the tank body 32 and the other end of which is connected to a pin 53 provided on the opening / closing wall 31. ing. When the opening / closing wall portion 31 is held by the opening / closing holder 46 or the opening / closing wall portion 31 is closed, the opening / closing wall portion 31 is in a loosened state.

When the opening / closing wall portion 31 is held in the open state by the opening opening holder 46 or the opening prevention wire 50, an unreasonable force is applied in the direction of further opening the opening / closing wall portion 31 by, for example, wind. If this is applied, the frame-shaped portion 36 of the tank body 32 to which the opening degree holder 46 and the opening prevention wire 50 are connected may be deformed. Therefore, the following second auxiliary frame body 54 is provided.

As shown in FIG. 5, the second auxiliary frame body 54 is composed of a strip plate, and the bracket 44 on the left side wall portion 33 side to which the first auxiliary frame body 45 on the rear side is connected and the frame-shaped portion 36 side. It is erected and connected to the connecting tool 48 of the above. The second auxiliary frame body 54 prevents deformation of the tank body 32 side due to the unreasonable force when an unreasonable force is applied to the opening / closing wall portion 31 in the direction of further opening.

Next, a configuration for strengthening the opening / closing wall portion 31 will be described.

As shown in FIG. 5, the opening / closing wall portion 31 is formed in a gentle arc shape when viewed in the front-rear direction. As shown in FIGS. 4 and 5, an upper reinforcing portion 56 is provided at an upper portion of the opening / closing wall portion 31 on the inner side of the tank. The upper reinforcing portion 56 is formed by bending a plate material into a substantially U-shaped cross section, and an upper support 57 extending in the front-rear direction is integrally connected to the wall surface of the opening / closing wall portion 31 over the entire front-rear direction to form a square cylinder. It constitutes a reinforcing part.

A lower reinforcing portion 59 is provided at a lower portion of the opening / closing wall portion 31 on the inner side of the tank. The lower reinforcing portion 59 is configured by connecting a first reinforcing body 59a formed by bending a plate material into a substantially U shape and a flat plate-shaped second reinforcing body 59b in a substantially cylindrical shape (see FIG. 8). ). The lower reinforcing portion 59 is integrally connected to the wall surface of the opening / closing wall portion 31 over the entire area in the front-rear direction. As shown in FIG. 6, at the rear end of the opening / closing wall portion 31, a square cylindrical vertical reinforcing portion 58 for supporting the entire opening / closing wall portion 31 via the rotation support portions 39 on both the upper and lower sides is provided. It is provided (see FIG. 6).

On the inner side of the tank of the opening / closing wall portion 31, a plurality of vertical support plates extending in the vertical direction are provided over the upper reinforcing portion 56 and the lower reinforcing portion 59 at intervals in the front-rear direction. .. Specifically, as shown in FIGS. 4 and 6, the vertical support plate is set more than the first vertical support plate 60 located at the front side end portion of the opening / closing wall portion 31 and the front side end portion. A second vertical support plate 61 located closer to the rear side by the width and a third vertical support plate 62 located in the front-rear intermediate portion are provided. Each of the plurality of vertical support plates 60, 61, 62 is formed of a plate having an L-shaped cross section, and is integrally connected to the inner side surface of the opening / closing wall portion 31 on the inner side of the tank. The upper reinforcing portion 56 is provided over the entire width of the opening / closing wall portion 31 in the front-rear direction. The lower side reinforcing portion 59 is provided from the second vertical support plate 61 to the rear side end portion.

Next, a connecting structure for connecting the opening / closing wall portion 31 to the tank main body portion 32 will be described.
The opening / closing wall portion 31 is provided with a locking member 63 that locks to the front-rear frame 40. By swinging the operation lever 64, the locking member 63 can be switched between a locked state in which the locking member 63 is caught and locked by the front-rear frame 40 and a released state in which the locking member is released. The locking member 63 is composed of a hook-shaped member having a substantially U-shaped locking groove 65.

As shown in FIGS. 4 and 6, a rotation shaft 66 that is integrally rotated by the swing operation of the operation lever 64 is provided, and the locking member 63 is integrally rotatably connected to the rotation shaft 66. .. The locking member 63 is switched between the locked state and the released state by the rotation of the rotating shaft 66 accompanying the swinging operation of the operating lever 64.

The rotating shaft 66 is provided at a position close to the inside of the tank of the opening / closing wall portion 31 so as to extend in the front-rear direction from the front-rear intermediate portion and the front portion of the opening / closing wall portion 31. The rotation shaft 66 is inserted through the insertion holes (not shown) formed in the second vertical support plate 61 and the third vertical support plate 62, respectively, and the second vertical support plate 61 and the second vertical support plate 61 are inserted into the rotating shaft 66. It is rotatably supported by the three vertical support plates 62.

The operating lever 64 is provided at the front end of the rotating shaft 66 in a state of being located between the first vertical support plate 60 and the second vertical support plate 61. As shown in FIG. 1, an opening 67 is formed in the opening / closing wall portion 31 at a position corresponding to the operation lever 64 between the first vertical support plate 60 and the second vertical support plate 61. .. The opening 67 can be switched between a state of being covered by a lid body 68 (see FIG. 6) that can be slid in the vertical direction and a state of being opened. When the lid body 68 is slid upward, the operation lever 64 faces outward through the opening 67, and the operator can manually operate the lid body 68 from the outside of the machine body.

As shown in FIGS. The swing-side end of the portion 31 and the tank body 32 are connected. As shown in FIG. 7, when the operating lever 64 is manually pulled outward through the opening 67 to switch the operating lever 64 to an inclined posture in which the operating lever 64 is tilted outward, the locking member 63 is moved to the front-rear frame 40. Is released from the lock, and the connection between the swing-side end of the opening / closing wall portion 31 and the tank main body portion 32 is released.

The grain tank 7 is provided with a configuration for holding the opening / closing wall portion 31 in a stored state and pulling the opening / closing wall portion 31 toward the tank main body portion 32 to eliminate a gap and enhance the closedness of the storage space. Has been done.
The configuration will be described below.

As shown in FIGS. A plurality of rods 69 as locking tools are provided, and a guide holding member 70 as a plurality of locked members is provided in the tank main body 32.

At a portion of the guide holding member 70 corresponding to the inner peripheral side of the opening 35 of the tank main body 32, an inclined portion 71 that inclines toward the outer peripheral side is formed. At a portion of the guide holding member 70 corresponding to the outer peripheral side of the opening 35, a receiving holding portion 72 extending in the vertical direction in a series connected state from the inclined portion 71 is formed. To add an explanation, the upper guide holding member 70 has an inclined portion 71 formed at the lower portion and a receiving holding portion 72 formed at the upper portion. The lower guide holding member 70 has an inclined portion 71 formed at the upper portion and a receiving holding portion 72 formed at the lower portion.

When the operating lever 64 is switched from the tilted posture to the vertical posture so that the locking member 63 is in the locked state, the rod 69 is slidably guided by the tilted portion 71 of the guide holding member 70. The opening / closing wall portion 31 is configured to be attracted to the tank main body portion 32 side. When the operating lever 64 is switched to the vertical posture, the rod 69 is received by the receiving holding portion 72, and the opening / closing wall portion 31 is maintained in a state of being pulled toward the tank main body portion 32 side.

To add an explanation, in view from the side, a total of four rods 69 are provided at the front and rear ends of the rotating shaft 66, and at the upper and lower ends of the opening / closing wall 31, respectively. It is equipped so that it can move only in the vertical direction. As shown in FIGS. 4 and 5, the two upper rods (upper rods) 69 located on the upper side are in a state of inserting the insertion holes formed in the upper support member 73 and the upper reinforcing portion 56, respectively. It is provided and is supported so that it can be moved only in the vertical direction. The two rods (lower rods) 69 located on the lower side are moved only in the vertical direction by the lower support member 74 formed in a substantially U shape in the front-rear direction and having an insertion hole through which the rod 69 is inserted. It is supported as much as possible.

As shown in FIGS. 4 and 5, an operating body 77 as a balance arm that rotates integrally is connected to both front and rear ends of the rotating shaft 66. In the operating body 77, an upper upper rod 69 is pivotally connected to one end in the longitudinal direction via a link member 78. In the operating body 77, a lower lower rod 69 is pivotally connected to the other end in the longitudinal direction via a link member 78. The rotation shaft 66 rotates with the operation of the operation lever 64, and the rod 69 slides in the vertical direction via the operation body 77 and the link member 78.

As shown in FIG. 4, a plurality of guide holding members 70 are provided at a position where the rod 69 slides in the frame-shaped portion 36 of the tank main body 32. The two guide holding members 70 located on the upper side are provided at a position on the outside of the tank in the frame-shaped portion 36. The two guide holding members 70 located on the lower side are provided at a position inside the tank in the frame-shaped portion 36. The two guide holding members 70 located on the upper side are provided with an inclined surface in which the lower end portion is located on the side away from the frame-shaped portion 36 and approaches the frame-shaped portion 36 toward the upper side. The two guide holding members 70 located on the lower side are provided with an inclined surface whose upper end portion is located on the side separated from the frame-shaped portion 36 and approaches the frame-shaped portion 36 toward the lower side.

The two guide holding members 70 located on the upper side change the tightening position of the screw shaft 79 with respect to the frame-shaped portion 36 by the nut 80, so that the position of the tank main body portion 32 and the opening / closing wall portion 31 in the approaching / separating direction can be changed. It is provided so that it can be changed and adjusted. The mounting structure of the two guide holding members 70 located on the lower side will be described later.

When the operating lever 64 is switched to the vertical posture, the upper rod 69 moves upward and the lower rod 69 moves downward via the operating body 77 and the link member 78. The upper rod 69 is slidably guided by the upper guide holding member 70 provided in the tank body 32, and the lower rod 69 is slid to the lower guide holding member 70 provided in the tank body 32. You will be guided. Due to the sliding guidance between the rod 69 and the guide holding member 70, the opening / closing wall portion 31 and the tank main body portion 32 are relatively displaced, and the opening / closing wall portion 31 is pulled toward the tank main body portion 32. As a result, the opening / closing wall portion 31 and the frame-shaped portion 36 around the opening 35 of the tank main body portion 32 are in close contact with each other.

A seal member 81 is provided at a contact point between the opening / closing wall portion 31 and the peripheral edge portion of the opening 35 in the frame-shaped portion 36. In particular, as shown in FIG. 4, a rubber weather strip having a large amount of elastic deformation and capable of improving airtightness is provided at the lower edge portion and the swinging outer peripheral side edge portion of the peripheral edge portion of the opening 35. A seal member 81 composed of the above is provided.

As shown in FIG. 7, the weather strip type seal member 81 as described above is provided in a state of projecting toward the inner peripheral side at the peripheral edge of the opening 35 in the tank main body 32. Then, when the opening / closing wall portion 31 is switched from the maintenance state (open state) to the storage state (closed state), it is possible to prevent the lower rod 69 from coming into contact with the seal member 81 and being damaged. It has become.

That is, as the opening / closing wall portion 31 switches from the maintenance state (open state) to the storage state (closed state), the lower rod 69 enters the storage space through the opening 35 to a position corresponding to the guide holding member 70. It is provided so that it can enter. Then, as shown in FIG. 7, a regulation unit 82 for restricting the rod 69 from entering the tank when the rod 69 is in contact with the seal member 81 is provided. The regulating portion 82 is integrally formed by extending the two guide holding members 70 located on the lower side upward, and the upper inclined portion 71 is positioned so as to overlap the seal member 81. , Is provided over the seal member 81.

With this configuration, when the opening / closing wall portion 31 swings from the maintenance state (open state) to the storage state (closed state), the lower rod 69 is not sufficiently raised and the seal member 81 Even if the rod 69 may swing in contact with the rod, the lower rod 69 is received by the regulating portion 82, and the opening / closing wall portion 31 cannot swing any more, so that the swing operation is stopped. At this time, the seal member 81 is sandwiched between the lower rod 69 and the regulating portion 82, but the sandwiched state is immediately released, so that there is no risk of damage to the seal member 81.

Further, when the opening / closing wall portion 31 swings toward the storage state (closed state), the opening / closing wall portion 31 is not sufficiently closed even if it is located above the regulation portion 82. , The lower rod 69 may stop in a state of being located above the seal member 81, and the lock operation may be performed as it is. In that case, when the lower rod 69 slides downward, it first hits the regulating portion 82 located above the seal member 81, and contact with the seal member 81 is avoided.

As shown in FIG. 7, the two guide holding members 70 located on the lower side have a collar 84 having a diameter larger than that of the screw shaft 83 as a fastener interposed between the guide holding member 70 and the frame-shaped portion 36. In this state, the screw shaft 83 and the nut 85 are tightened to connect and fix the frame-shaped portion 36. By interposing the large-diameter collar 84 in this way, even if a force acts in the lateral direction on the guide holding member 70 that extends long in the vertical direction, the large-diameter collar 84 receives and supports it over a wide range. By doing so, the screw shaft 83, the guide holding member 70, and the like are prevented from being deformed or damaged.

A shim 86 for adjusting a gap is interposed between the collar 84 and the frame-shaped portion 36. By changing the number of shims 86, the position of the screw shaft 83 of the guide holding member 70 is adjusted in the axial direction.

In the configuration as described above, as shown in FIG. 7, when the operating lever 64 is switched to the tilted posture, the locking member 63 is in the released state, and accordingly, the upper side is interposed via the operating body 77 and the link member 78. The rod 69 moves downward and is disengaged from the guide holding member 70, and the lower rod 69 moves upward and is disengaged from the guide holding member 70. As a result, the opening / closing wall portion 31 can be swung outward to switch to the maintenance state.

As shown in FIG. 6, the lever storage area sandwiched between the first vertical support plate 60 and the second vertical support plate 61 of the opening / closing wall portion 31 and the storage space Q are partitioned. Even if grains are stored in the storage space Q, there are no grains in the lever storage area provided with the operation lever 64, and the operation can be easily performed.

A detection sensor S for detecting whether or not the opening / closing wall portion 31 has been switched to the closed state is provided at an upper portion of the frame-shaped portion 36 of the tank main body portion 32 on the front portion side of the machine body. The detection sensor S is configured to detect the closed state by the contact action of the detected body 87 provided on the opening / closing wall portion 31. Although not shown, if the detection sensor S does not detect the closed state, the start of the engine E is restrained, and if the closed state is not detected during the harvesting operation, the engine E is stopped. There is.

As shown in FIG. 1, a lower cover 93 covering the outer right side of the lower side of the grain tank 7 is provided on the lower side of the opening / closing wall portion 31. The lower cover 93 is formed so that the vertical width of the front end portion is slightly narrower than the vertical width of the rear end portion, the lower end edge is in a substantially horizontal posture, and the upper end edge is in a rearward rising inclined posture. .. The lower cover 93 is detachably supported. As shown in FIG. 3, the lower cover 93 is positioned so that the hook-shaped locking members 94 provided on both front and rear portions are locked to the locking pins 95 provided on both front and rear sides of the opening / closing wall portion 31. It can be held and locked by locking to a locking portion (not shown) provided on the tank body 32 by a well-known elastic engagement type locking tool 96 provided on both front and rear sides on the lower side. It is configured to be possible.

As shown in FIGS. 4 and 9, a circular insertion hole 88 is formed at an upper portion of the lateral edge portion of the front end portion of the opening / closing wall portion 31. Through the insertion hole 88, the operator can visually inspect whether or not the upper rod 69 is securely locked to the guide holding member 70 (locked state). The insertion hole 88 can be used when hanging by a lifting device when performing painting work in the manufacturing process.

[Another Embodiment]
(1) In the above embodiment, the regulating unit 82 has a configuration in which the guide holding member 70 (locked member) is extended upward and is integrally formed with the guide holding member 70. Alternatively, the regulating unit 82 may be formed separately from the guide holding member 70.

(2) In the above embodiment, the regulation unit 82 is provided over the seal member 81, but instead of this configuration, no member corresponding to the regulation unit 82 is provided above the seal member 81. It may be configured.

(3) In the above embodiment, the lower guide holding member 70 as the locked member is connected and fixed to the tank main body 32 by the fastener with the collar 84 extrapolated. Instead of this configuration, the collar 84 may not be provided and may be connected only by the fastener consisting of the screw shaft 83 and the nut 85. By changing the tightening position of the nut 85 with respect to the screw shaft 83, the tank body 32 The position may be adjusted with.

The present invention is applicable not only to a self-removing combine, but also to a normal combine in which all the culms of the harvested culm are put into a threshing device.

7 Grain tank 31 Side plate 32 Tank body 35 Opening 69 Rod (locking tool)
70 Locked member 81 Seal member 82 Regulator
83 Fastener 84 Color

Claims (4)

A grain tank for storing grains is provided in the internal storage space,
The side plate in the grain tank is rotatably supported around the vertical axis core with respect to the tank body.
The side plate is in a closed state in which the opening formed in the side portion of the tank main body is closed by rotating around the vertical axis core to enable storage of grains, and the storage space is passed through the opening. Is provided so that it can be switched between the open state and the open state.
A sealing member is provided on the peripheral edge of the opening in the tank main body so as to project toward the inner peripheral side.
The side plate is provided with a locking tool that locks the side plate to the closed state by locking the locked member provided in the storage space.
The lock tool is provided so as to be able to enter the storage space through the opening to a position corresponding to the locked member as the side plate switches from the open state to the closed state.
A combine provided with a regulating unit that regulates the entry of the lock tool into the tank when the lock tool is in contact with the seal member. The combine according to claim 1, wherein the regulating portion is provided above the sealing member. The combine according to claim 1 or 2, wherein the restricting portion is formed by extending the locked member upward. Any one of claims 1 to 3 in which the locked member is connected and fixed by a fastener with the collar extrapolated to the wall portion of the tank body where the opening is formed. The combine described in the section.

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