JP7192050B2 - combine - Google Patents

Description

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

Conventionally, grain tanks have a configuration in which grains are stored in a storage space closed by a box-shaped wall body (see, for example, Patent Document 1).

JP 2017-184768 A

In the above-described conventional configuration, the grain tank is closed like a box to form a space. 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 is formed in a part of the upper surface of the grain tank and is closed by a lid that can be opened and closed, and the work can be performed from above the grain tank through this opening. However, it was difficult to work on large grain tanks from above.

Therefore, in order to eliminate such a disadvantage, it is conceivable that the side portion of the grain tank can be opened widely. In the case of such a configuration in which the side portion is largely opened, there is a concern that grains may leak out from the opening and closing portion.

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

The characteristic configuration of the combine according to the present invention is provided with a grain tank that stores grain in an internal storage space, and the side plate of the grain tank is rotatable around the vertical axis with respect to the tank main body. An opening is provided in a side portion of the tank main body and formed so as to extend from the upper portion to the lower portion of the tank main portion and from the front portion to the rear portion of the tank main portion. By rotating around the axis, it is provided so as to be switchable between a closed state in which the opening is closed and grains can be stored, and an open state in which the storage space is opened to the outside through the opening, A seal member is provided on the peripheral edge of the opening in the tank main body in a state of protruding toward the inner peripheral side, and the side plate is engaged with a member to be engaged provided in the storage space to lock the side plate. A locking device for locking the closed state is provided, and the locking device extends through the opening to a position corresponding to the locked member as the side plate is switched from the open state to the closed state. It is provided with a regulating portion which is provided so as to be able to enter inside, and which regulates entry of the locking member toward the tank side when the locking member is in a position of contact with the sealing member.

According to the present invention, when harvesting work is performed, the harvested crops 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 storage space is opened to the outside through the opening formed on the side of the grain tank by switching the side plate of the grain tank to the open state, making it possible to easily perform maintenance work such as cleaning. Become.

A sealing member is provided on the periphery of the opening in the tank body, and the lock mechanism can be locked in the closed state, so there are no disadvantages such as grain leaking from the gap between the side plate and the tank body or rainwater entering the interior. Grains can be well stored without Further, since the locking tool passes in the vicinity of the sealing member, the locking tool may come into contact with the sealing member and damage it. However, since the locking member is provided with the restricting portion that restricts the locking member from entering into the tank when the locking member is in a position to contact the sealing member, the locking member is received by the restricting portion and sealed. It does not pass straight through to break the member. Even if the seal member is pinched between the lock member and the restricting portion, there is little risk of damage if the seal member is pinched. As a result, it is possible to prevent damage to the seal member, and when the side plate is locked in the closed state, the kernel is prevented from leaking out and rainwater enters the interior, maintaining a good condition for storing the kernel. be done.

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

In the present invention, it is preferable that the restricting portion is provided over the sealing member.

According to this configuration, even when the locking device moves downward from the upper side of the sealing member, the locking device is received by the regulating portion, so the locking device directly collides with the sealing 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, the member to be locked provided on the tank body side is effectively used for the lock member to perform the locking action, and the restricting portion is formed by extending the member to be locked upward. .
As a result, there is no need to provide a dedicated member for constituting the restricting portion, which is separate from the locked member, and a simple configuration can be used.

In the present invention, it is preferable that the member to be locked is connected and fixed to the wall portion of the tank body in which the opening is formed by a fastener in a state in which the collar is externally inserted.

According to this configuration, by interposing a collar having a diameter larger than that of the fastener, even if a lateral force is applied to the member to be locked, the collar having a large diameter can receive the force over as wide a range as possible. By supporting, it is possible to prevent deformation and damage to the fastener, the member to be locked, and the like.

It is the whole combine side view. It is the whole combine top view. 1 is a perspective view of a grain tank; FIG. 1 is a perspective view of a grain tank in a maintenance state; FIG. It is a longitudinal front view of a grain tank. Fig. 2 is a cross-sectional plan view of a grain tank; 4 is a longitudinal front view of the opening/closing wall portion when switching from the open state to the closed state; FIG. 4 is a longitudinal front view of the opening/closing wall portion in the closed state; FIG. FIG. 4 is a perspective view of the front upper portion of the opening/closing wall;

BEST MODE FOR CARRYING OUT THE INVENTION A case where an embodiment of the present invention is applied to a self-throwing combine harvester will be described below 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 harvesting unit 3 for harvesting planted grain culms at the front of a traveling body 2 which is self-propelled by a pair of left and right crawler traveling devices 1. . A driving unit 5 whose periphery is covered with a cabin 4 is provided on the front right side of the traveling body 2. - 特許庁
Behind the operating unit 5, a threshing device 6 for threshing the culms harvested by the harvesting unit 3 and a grain tank 7 for storing grains obtained by the threshing processing are arranged laterally. deployed in a 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. In other words, the driving section 5 is positioned in front of the grain tank 7 . An engine E is provided below a driver's seat 8 in the driver's seat 5 . A grain discharging device 9 for discharging grains stored in the grain tank 7 to the outside of the machine is provided at the rear part of the traveling body 2 and behind the grain tank 7 . At the rear of the threshing device 6, a waste straw processing device 20 for shredding waste straw is provided.

In this embodiment, when defining the longitudinal 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, left and right are defined when viewed in the traveling direction of the aircraft. . 1 and 2 is the front side of the fuselage, and the direction indicated by the code (B) in FIGS. 1 and 2 is the rear side of the fuselage. The direction indicated by the symbol (L) in FIG. 2 is the left side of the fuselage, and the direction indicated by the symbol (R) in FIG. 2 is the right side of the fuselage.

The harvesting unit 3 includes a weed dividing tool 10 for dividing and guiding the base of the planted grain culm to be harvested, a plurality of lifting devices 11 for lifting the divided planted grain culm to a vertical posture, and a raised device. A trimmer type reaping device 12 for cutting the base of planted grain culms, and a vertical conveyance for feeding the reaping grain culms to a threshing device 6 by conveying them rearward while gradually changing their posture from a vertical posture to a sideways posture. A device 13 or the like is provided. The upper side of the vertical transfer device 13 is covered with a dustproof cover 14 .

Although not shown, the threshing device 6 carries out threshing by threshing the tip side of the supplied harvested culm in a threshing chamber while pinching and conveying the root side of the supplied harvested grain culm by the threshing feed chain. After threshing, the processed material is sorted into grains, straw waste, and the like in the lower sorting section. The grains are conveyed to the outside of the right lateral side of the threshing device 6 by the first grain conveying screw (not shown), then lifted by the grain-lifting conveyor 15 and conveyed into the grain tank 7 . The grain tank 7 stores the grain sent from the threshing device 6 . After that, the grains stored in the grain tank 7 are carried outside by the grain discharging device 9 .

The bottom portion of the grain tank 7 is provided with a bottom screw 16 that rotates about the front-rear axis and conveys the stored grain toward the rear side of the machine body. The grain discharging device 9 receives the grains carried out from the bottom screw 16 and has a vertical feeding screw conveyor 17 as a vertical conveying device that conveys the grains upward, and the vertical feeding screw conveyor 17. A horizontal feed screw conveyor 19 is provided for conveying the grains in the horizontal direction from the base end connected to the upper end to the discharge port 18 at the tip.

Although the supporting structure is not described in detail, the grain tank 7 as a whole is supported so as to be swingable around a vertical axis X, which is the rotational axis 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 it is housed inside the body and a maintenance state in which it swings outward on the lateral side of the body as shown in FIGS. , is supported so as to be able to swing about the vertical axis X. The posture of the grain tank 7 is held by a position holding mechanism (not shown) in the storage state.

The grain-lifting conveyor 15 lifts the grains to the vicinity of the upper end by the screw conveyor 28, and then feeds the grains through the opening 25 formed in the grain tank 7 by the delivery vane 24 provided at the upper end. Release inward.

[Grain tank 7]
Next, the grain tank 7 will be explained.
As shown in FIGS. 3, 5, and 6, the grain tank 7 has front, rear, right, and left sides and is surrounded by a grain storage space Q to form a grain storage space Q. As shown in FIGS. A portion of the right side wall portion 30 constituting the right side surface of the grain tank 7 (an opening/closing wall portion 31 to be described later) is closed to block the storage space Q to enable storage of grains, and the storage space Q is open to the outside and can be switched to an open state in which access to the storage space Q is made possible by the operator.

Other sides of the grain tank 7 except for the right side, that is, the front side, the rear side, the left side, and the upper side, are all formed by wall members connected in series, and the tank main body portion 32. As shown in FIG. 6, the left side wall portion 33 of the tank main body portion 32 is formed with a recessed portion 34 for disposing the grain-lifting conveyor 15 in a state of being inserted therein.

The right side wall portion 30 of the grain tank 7 is positioned to face the outside of the traveling body 2 on the right lateral side.
The right side wall portion 30 can open a region extending from the upper portion to the lower portion and from the front portion to the rear portion. That is, as shown in FIGS. 5 and 7, an opening 35 is formed in the right side wall portion 30 in a wide open state so as to open an area extending from the upper portion to the lower portion and from the front portion to the rear portion. there is The opening 35 that is wide open 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 that surrounds the opening 35. The frame-shaped portion 36 is connected to the other side surface of the tank. It constitutes a part of the body portion 32 . As shown in FIG. 5, the opening/closing wall portion 31 is switched to the storage state, and as described later, the opening/closing wall portion 31 and the frame-shaped portion 36 are integrally connected 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 be capable of swinging and opening/closing around the vertical axis Y1 positioned behind the grain tank 7 . At the right end of the rear wall portion 38 of the tank main body 32, two rotation support portions 39 are provided with a space therebetween in the vertical direction. It is configured to be supported so as to be freely rockable around it.

Next, a configuration for reinforcing the strength of the tank main 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 fuselage is provided across the front and rear portions of the tank main body 32 . The front-rear frame 40 is formed in a cylindrical shape, and is provided in a state of extending across the front wall portion 41 and the rear wall portion 42 of the tank body portion 32 . The front-rear frame 40 is provided in a state of being positioned in the upper and lower middle portion 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 portion 33 are connected to each other at a position closer to the front side than the front-rear central portion of the front-rear frame 40 and at a position closer to the rear side than the front-rear central portion. A first auxiliary frame 45 made of a connecting round bar material is provided.

As shown in FIG. 4, when the opening/closing wall portion 31 is in the open state, an opening degree holder 46 is provided for holding the opening state. The opening retainer 46 is a rod-shaped member with both ends bent, one end (support end) is held by the support plate 47 and the other end (free end) is attached to the frame of the tank main body 32 . It is inserted into a hole in a connector 48 attached to the shaped portion 36 (see phantom lines in FIG. 4). As a result, the opening degree holder 46 holds the opening/closing wall portion 31 in the 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 indicated by the solid line in FIG.

Also, an opening prevention wire 50 is provided to prevent the opening/closing wall portion 31 from opening beyond a predetermined angle (for example, 90 degrees). The opening prevention wire 50 is a flexible metal wire, one end of which is connected to the 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. It should be noted that the state of being held by the opening degree holding member 46 and the state of the opening/closing wall portion 31 being closed are in a relaxed state.

When the opening-and-closing wall portion 31 is held in the open state by the opening degree holder 46 and the opening prevention wire 50, for example, wind or the like exerts an unreasonable force on the opening-and-closing wall portion 31 in the direction to open it further. If this is applied, the frame-like portion 36 of the tank main 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 band plate, and includes a 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 a bracket 44 on the side of the frame portion 36 side. , and are bridged and connected to the connector 48 of the . The second auxiliary frame body 54 prevents deformation of the tank main body 32 due to the excessive force when an excessive force is applied to the opening/closing wall portion 31 in a further opening direction.

Next, a configuration for reinforcing the strength of 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 extending in the front-rear direction. Constructs the reinforcement 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 side 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 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 front-rear direction. As shown in FIG. 6, at the rear end portion of the opening/closing wall portion 31, there is a vertically oriented reinforcing portion 58 in the form of a rectangular tube for supporting the entire opening/closing wall portion 31 via the rotation support portions 39 on both upper and lower sides. provided (see FIG. 6).

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

Next, a connection 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 onto the front-rear facing frame 40 .
By swinging the operation lever 64, the locking member 63 can be switched between a locking state in which the locking member 63 is caught by the front-back frame 40 and locked, and a release state in which the locking 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 rotating shaft 66 that rotates integrally by swinging operation of the operating lever 64 is provided, and the locking member 63 is integrally and rotatably connected to the rotating shaft 66 . . The locking member 63 is switched between the locked state and the released state by the rotation of the rotary shaft 66 accompanying the swinging operation of the operating lever 64 .

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

An operation lever 64 is provided at the front end of the rotating shaft 66 and positioned 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 covered by a vertically slidable cover 68 (see FIG. 6) and an open state. When the cover 68 is slid upward, the operation lever 64 faces outward through the opening 67, and the operator can manually operate the machine from the outside.

As shown in FIGS. 5 and 8, when the operating lever 64 is switched to the vertical posture positioned inside the opening/closing wall portion 31, the locking member 63 is locked to the front/rear frame 40, and the opening/closing wall in the stored state is locked. The swing-side end of the portion 31 and the tank body portion 32 are connected. As shown in FIG. 7, when the operation lever 64 is manually pulled outward through the opening 67 and is switched to a tilted posture in which the operation lever 64 is tilted outward, the locking member 63 is engaged with the forward-facing frame 40 . is released, and the connection between the rocking-side end portion 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 storage state and drawing the opening/closing wall portion 31 toward the tank main body portion 32 side to eliminate a gap to enhance the blockage of the storage space. It is
The configuration will be described below.

As shown in FIGS. 4 and 5, it is supported by the opening/closing wall portion 31 so as to be movable only in the vertical direction, and is interlocked with the rotating shaft 66 so as to be vertically movable as the rotating shaft 66 rotates. A plurality of rods 69 are provided as locking devices, and the tank main body 32 is provided with a plurality of guiding and holding members 70 as members to be engaged.

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 is formed that slopes outward toward the inner peripheral side. At a portion of the guide holding member 70 corresponding to the outer peripheral side of the opening 35 , a receiving holding portion 72 is formed which extends vertically in a continuous manner from the inclined portion 71 . More specifically, the upper guiding and holding member 70 has an inclined portion 71 formed at its lower portion and a receiving and holding portion 72 formed at its upper portion.
The lower guiding and holding member 70 has an inclined portion 71 formed in its upper portion and a receiving and holding portion 72 formed in its lower portion.

When the operation lever 64 is switched from the inclined posture to the vertical posture so that the locking member 63 is in the locked state, the rod 69 is slidably guided by the inclined portion 71 of the guide holding member 70. It is configured to draw the opening/closing wall portion 31 toward the tank body portion 32 side. When the operating lever 64 is switched to the vertical posture, the rod 69 is received by the receiving and holding portion 72 to maintain the state in which the opening/closing wall portion 31 is drawn toward the tank body portion 32 side.

To explain, in side view, a total of four rods 69 are provided at locations corresponding to the front and rear end portions of the rotating shaft 66 and at the upper and lower portions of the opening/closing wall portion 31, respectively. It is provided so as to be movable only in the vertical direction. As shown in FIGS. 4 and 5, two upper rods (upper rods) 69 located on the upper side are inserted through insertion holes formed in the upper support member 73 and the upper reinforcing portion 56, respectively. provided and supported so as to be movable only in the vertical direction. Two rods (lower rods) 69 located on the lower side are moved only in the vertical direction by a lower side support member 74 which is formed in a substantially U shape when viewed in the front-rear direction and has an insertion hole through which the rods 69 are inserted. supported as possible.

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

As shown in FIG. 4 , a plurality of guiding and holding members 70 are provided at portions of the frame-shaped portion 36 of the tank body 32 where the rod 69 slides. The two guide holding members 70 located on the upper side are provided 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 location inside the tank in the frame-shaped portion 36 . The two guide holding members 70 located on the upper side have lower ends located on the side away from the frame-shaped portion 36 and have inclined surfaces that approach the frame-shaped portion 36 as they go upward. The two guide holding members 70 positioned on the lower side have upper ends positioned away from the frame-shaped portion 36 and have inclined surfaces that approach the frame-shaped portion 36 downward.

The two guide holding members 70 located on the upper side change the positions of the tank main body 32 and the opening/closing wall portion 31 in the direction of approach and separation by changing the tightening position of the screw shaft 79 with respect to the frame-shaped portion 36 by the nut 80. It is adjustable to change. 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 an upper guide holding member 70 provided on the tank main body 32 , and the lower rod 69 is slidably guided by a lower guide holding member 70 provided on the tank main body 32 . motion guidance. Due to the sliding guidance of the rod 69 and the guide holding member 70 , the opening/closing wall portion 31 and the tank body portion 32 are displaced relative to each other, and the opening/closing wall portion 31 is drawn toward the tank body portion 32 . As a result, the opening/closing wall portion 31 and the frame-like portion 36 around the opening 35 of the tank body portion 32 are brought into close contact with each other.

A sealing member 81 is provided at a contact portion between the opening/closing wall portion 31 and the peripheral portion of the opening 35 in the frame-shaped portion 36 . In particular, as shown in FIG. 4, a rubber weatherstrip that has a large amount of elastic deformation and is capable of improving sealing performance is provided on the lower edge of the peripheral edge of the opening 35 and the edge on the swinging outer peripheral side. A seal member 81 is provided.

As shown in FIG. 7, the weatherstrip-type sealing member 81 as described above is provided on the periphery of the opening 35 of the tank main body 32 so as to protrude inward. Further, when the opening/closing wall portion 31 is switched from the maintenance state (open state) to the storage state (closed state), the rod 69 on the lower side can be prevented from contacting and damaging the seal member 81 . It's becoming

That is, the lower rod 69 moves into the storage space through the opening 35 to a position corresponding to the guide holding member 70 as the opening/closing wall portion 31 switches from the maintenance state (open state) to the storage state (closed state). It is provided so that it can be entered. As shown in FIG. 7, a restricting portion 82 is provided to restrict the rod 69 from entering the tank when the rod 69 is in contact with the seal member 81 . The restricting portion 82 is integrally formed by extending upward the two guide holding members 70 positioned on the lower side, and is positioned so that the upper inclined portion 71 overlaps the sealing member 81 above. , over the sealing member 81 .

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

Further, when the opening/closing wall portion 31 swings toward the stored state (closed state), even if the opening/closing wall portion 31 is positioned above the restricting portion 82, the opening/closing wall portion 31 does not sufficiently close. , the lower rod 69 may be stopped in a state above the sealing member 81, and the locking operation may be performed as it is. In this case, when the rod 69 on the lower side slides downward, it hits the restricting portion 82 positioned above the seal member 81 first, and contact with the seal member 81 is avoided.

As shown in FIG. 7, the two guiding and holding members 70 located on the lower side have collars 84 interposed between the guiding and holding members 70 and the frame-shaped portion 36, which are larger in diameter than the screw shafts 83 as fasteners. In this state, the screw shaft 83 and the nut 85 are tightened to be connected and fixed to the frame-shaped portion 36 . By interposing the large-diameter collar 84 in this manner, even if a lateral force acts 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 clearance adjustment is interposed between the collar 84 and the frame-like portion 36 . By changing the number of shims 86, the position of the screw shaft 83 of the guide holding member 70 in the axial direction can be adjusted.

In the above-described configuration, as shown in FIG. 7, when the operating lever 64 is switched to the inclined posture, the locking member 63 is released, and accordingly, the operating body 77 and the link member 78 move upward. The lower rod 69 moves downward to disengage from the guide holding member 70 , and the lower rod 69 moves upward to disengage 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 storage space Q and the lever housing area sandwiched between the first vertical support plate 60 and the second vertical support plate 61 of the opening/closing wall portion 31 are partitioned. Even if grains are stored in the storage space Q, there is no grain in the lever storage area where the operation lever 64 is provided, and the operation can be easily performed.

A detection sensor S for detecting whether or not the opening/closing wall portion 31 is switched to the closed state is provided at an upper portion of the frame-shaped portion 36 of the tank body portion 32 on the front side of the body. The detection sensor S is configured to detect the closed state by the contact action of the detection target 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 no longer detected during the harvesting work, the engine E is stopped. there is

As shown in FIG. 1 , a lower cover 93 that covers 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 such that the vertical width of the front end portion is slightly narrower than that 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. . This lower cover 93 is detachably supported. As shown in FIG. 3 , the lower cover 93 is positioned such that hook-shaped locking members 94 provided on both front and rear sides are locked to locking pins 95 provided on both front and rear sides of the opening/closing wall portion 31 . In addition to being able to hold it, it is locked by being locked to a locking portion (not shown) provided on the tank main body 32 by elastic engagement type locks 96 of well-known construction provided on both front and rear sides of the lower side. configured as possible.

As shown in FIGS. 4 and 9, a circular insertion hole 88 is formed at an upper portion of the lateral edge of the front end of the opening/closing wall portion 31 . Through this insertion hole 88, the operator can visually inspect whether or not the upper rod 69 is reliably engaged with the guide holding member 70 (locked state). The insertion hole 88 can be used for hooking and suspending with a lifting device during the coating work in the manufacturing process.

[Another embodiment]
(1) In the above-described embodiment, the restricting portion 82 is formed integrally with the guide holding member 70 (locked member) by extending the guide holding member 70 upward. Alternatively, the restricting portion 82 may be configured separately from the guide holding member 70 .

(2) In the above embodiment, the restricting portion 82 is provided over the sealing member 81, but instead of this configuration, no member corresponding to the restricting portion 82 is provided above the sealing member 81. may be configured.

(3) In the above embodiment, the lower guide holding member 70 as a member to be locked is connected and fixed to the tank main body 32 by a fastener with the collar 84 externally inserted. Instead of this structure, a structure may be adopted in which only a fastener consisting of a screw shaft 83 and a nut 85 is used for connection without providing the collar 84. You may make it position-adjust with.

The present invention can be applied not only to a self-threshing combine harvester but also to a normal combine harvester in which all harvested culms of grain culms are fed into a threshing device.

7 grain tank 31 side plate 32 tank main body 35 opening 69 rod (locking tool)
70 locked member 81 sealing member 82 restricting portion
83 Fastener 84 Collar

Claims (4)

Equipped with a grain tank that stores grain in the internal storage space,
A side plate of the grain tank is supported so as to be rotatable about a vertical axis with respect to the tank main body,
An opening is formed in a side portion of the tank body so as to extend from the top to the bottom of the tank body and to extend from the front to the rear of the tank body,
The side plate rotates around the vertical axis to switch between a closed state in which the opening is closed so that grains can be stored, and an open state in which the storage space is opened to the outside through the opening. provided that it is possible to
A sealing member is provided on the peripheral edge of the opening in the tank main body in a state of protruding toward the inner peripheral side,
The side plate is provided with a locking member that engages with a member to be locked provided in the storage space to lock the side plate in the closed state,
The locking device is provided so as to be able to enter the storage space through the opening to a position corresponding to the member to be locked as the side plate is switched from the open state to the closed state,
A combine harvester comprising a regulating portion for regulating entry of the locking member toward the tank when the locking member is in contact with the seal member. The combine according to claim 1, wherein the restricting portion is provided over the sealing member. The combine according to claim 1 or 2, wherein the restricting portion is formed by extending the locked member upward. 4. Any one of claims 1 to 3, wherein the member to be locked is connected and fixed to the wall portion of the tank main body where the opening is formed by a fastener in a state in which the collar is externally inserted. A combine as described above.

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