JP7224736B2 - Freight vehicles with packing boxes and packing boxes that can be tilted to the side - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo box that can be tilted (dumped) laterally with respect to the longitudinal direction of the vehicle, and a cargo vehicle on which the cargo box is mounted.

A packing box mounted on a freight vehicle is provided with a sheet over at least a part of the upper opening of the packing box in order to prevent the loaded earth and sand from scattering while the vehicle is traveling. The seat is hung on a seat mounting frame that is rotatably supported on the upper edge of a side gate (side plate) that stands on the floor of the cargo box and is positioned on the side of the vehicle. The unit (hereinafter simply referred to as the "frame with sheet") consisting of this frame with the sheet hung thereon can be manually operated in an "upright state" along the side gate or in an "upright state" facing the outer wall surface of the side gate. The posture is changed by rotating to the “deployed state”.

FIG. 6(a) is a side view of the packing box 90. The packing box 90 has a side gate 91, a sheet-equipped frame 92, and a front wall 93. In the drawing, the sheet-equipped frame is in an upright state. 92 is shown. The seat-equipped frame 92 has a support shaft 95 supported by bearing members 94 fixed to the front and rear upper end portions of the side gate 91 . The axial direction of the support shaft 95 is the vehicle front-rear direction, and the seat-equipped frame 92 is rotatable around the support shaft 95 (Patent Document 1).

The seat-equipped frame 92 is provided with an engagement bracket 921 that is fixed to the frame portion 92a by welding on the front side portion in the vehicle front-rear direction. A hook 931 and a lock handle 932 that can be engaged with the hook 931 are provided on the side of the front wall 93. When the seat-equipped frame 92 is raised, the engaging bracket 921 is engaged with the hook 931. and the seat-attached frame 92 is supported in a state of being sandwiched by the lock handle 932, so that the seat-equipped frame 92 is locked in rotation. That is, the seat-attached frame 92 is held in an upright state.

JP 2006-76499 A

As described above, the frame 92 with the seat can be kept upright. There is room.

As shown in FIG. 6(b), when the packing box 90 is dumped (arrow 90A) to the side of the vehicle from the normal state indicated by the dotted line (vehicle travelable state), the seat-equipped frame 92 is unfolded. be. In order to keep the upright state, the engagement bracket 921 must be locked by the hook 931 and the lock handle 932, and the packing box 90 is pushed to the side of the vehicle while the seat-equipped frame 92 is in the locked state (upright state). Before being dumped, the operator needs to unlock the engagement bracket 921 and the like in advance.

As the cargo box 90 is dumped to the side of the vehicle, the side gate 91 rotates (arrow 90B) from the two-dot chain line state to the solid line state to open downward. For example, if the packing box 90 is dumped to the side of the vehicle while the frame 92 with the seat is kept in the upright state, the state shown by the solid line in FIG. Since the relative position of the frame 92 with the seat does not change, a turning force (arrow 90C) is also generated in the frame 92 with the seat as the side gate 91 rotates (posture change) to the downwardly opened state. As a result, concentrated stress is generated on the engagement bracket 921 and the like that hold the seat-equipped frame 92 in an upright state. must be disengaged beforehand.

For this reason, for a worker who wants to keep the frame 92 with the seat in the upright state, it is not complicated to release the locked state each time the packing box 90 is dumped to the side of the vehicle, and to hold the locked state again after the release. Accompany.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a cargo box that can suppress the complicated operation of a frame to which a seat is attached, and a dumping operation to the side of a vehicle with the cargo box. Intended to provide freight vehicles.

A freight vehicle according to the present invention shall have the following configuration.

A cargo box mounted on a vehicle body frame having a vehicle longitudinal direction as a longitudinal direction and tiltable in at least one of the vehicle lateral directions via a dump device provided on the vehicle body frame is intended. a floor surface portion; a fixed portion fixed so as to maintain a constant relative position with respect to the floor surface portion when tilted; a side gate that is supported by upper hinges provided at both ends and is rotatable in the lateral direction of the vehicle; and a rotation restricting portion provided in the fixed portion for restricting rotation of the seat mounting frame. Further, the rotation restricting portion has an opposing wall portion that faces a portion of the seat mounting frame in a state of being erected with respect to the side gate, and the portion of the seat mounting frame faces the side gate. By being arranged inside the wall portion in the left-right direction of the vehicle, the rotation in the direction intersecting with the surface direction of the facing wall portion is regulated and the posture in the surface direction can be changed. . In addition, the above-mentioned "fixed part" is a part such as a front wall part or a fixed pillar whose relative position does not change with respect to the floor part. Even when , it means that the relative position and relative attitude with respect to the floor are the same as when the vehicle is running.

In addition to the above configuration, the seat mounting frame has a frame-like body on which a seat is hung, and the part is provided to protrude forward in the vehicle front-rear direction with respect to the front portion of the frame-like body. It is good also as a structure which is a protrusion part.

Further, in addition to the above configuration, the rotation restricting portion is formed by bending a plate-shaped member, the upper portion of the plate-shaped member is fixed to the fixed portion, and is erected so as to stand with respect to the upper portion. It is also possible to have a configuration in which the portion is bent, and the facing wall portion is further bent with respect to the erected portion.

In addition, the rotation restricting portion can be rotated up and down at one end in the vertical direction about the longitudinal direction of the vehicle, and is fixed at the other end in the vertical direction. It is good also as a structure provided so that it can be engaged/disengaged with respect to a part.
Further, the present invention can also be applied to a "cargo vehicle having a cargo box that can be tilted to the side", which includes the cargo box having the above-described configurations, the vehicle body frame, and the dump device.

By adopting the configuration of the present invention, the opposing wall portion facing a part of the seat mounting frame as the side gate rotates is fixed to the fixed portion such as the front wall portion having a constant relative position with respect to the floor surface portion. Therefore, when the opposing wall portion is arranged inside the portion of the seat mounting frame in the lateral direction of the vehicle, it is possible to restrict the turning of the frame in the lateral direction of the vehicle, particularly to the outside of the vehicle. In addition, since the opposing wall portions are arranged to face each other, the rotation in the direction intersecting with the plane direction of the opposing wall portion, which is the above-mentioned rotation direction, is restricted, but the seat attachment in the plane direction is prevented. It is possible to change the posture of the frame. That is, it is possible to change the posture of the seat mounting frame while appropriately and flexibly coping with changes in posture of the cargo box and the side gate accompanying dumping of the cargo box toward the side of the vehicle.

Therefore, before and after dumping the cargo box toward the side of the vehicle, the operator does not need to release the upright state of the seat mounting frame or hold the upright state of the seat mounting frame again after the release. can be maintained, and the complexity of the work can be eliminated. Of course, it is also possible to prevent deterioration in the durability of the holding member that holds the seat mounting frame in the upright state.

(a) is a side view of a main part of a freight vehicle to which a frame with a seat according to the present embodiment is attached, (b) is a side view showing a packing box, and (c) is a holding member for holding the frame with a seat. It is a side view showing 4A and 4B are a side view and a rear view showing a holding member of the frame with seat according to the present embodiment; FIG. It is the rear view which looked at the packing box which concerns on this embodiment from the vehicle rear side. (a) is a schematic rear view showing the rotating state of the side gate when the cargo box is tilted to the side of the vehicle in the freight vehicle according to the present embodiment; It is a model rear view which shows the released state. FIG. 5 is a side view showing a frame with a seat and side gates according to another embodiment of the present invention; FIG. 10 is a side view and a schematic diagram showing a frame with a seat and a side gate according to a conventional form;

An example of an embodiment according to the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration of a freight vehicle 100 according to this embodiment. In this freight vehicle 100, a cargo box 2 mounted on a vehicle body frame 1 whose longitudinal direction is the longitudinal direction of the vehicle (horizontal direction in the figure) is tilted not only to the rear of the vehicle but also to both sides of the vehicle by a dump device 3 dump) has a possible configuration. In addition, the left side in the drawing is the front side of the vehicle, and the right side is the rear side of the vehicle.

The dump device 3 includes a lift arm 31 , a tension arm 32 and an extension cylinder 33 . One end portions of the lift arm 31 and the tension arm 32 are pivotally supported by a pivot pin 34 . The other end of the lift arm 31 is attached to the bottom of the cargo box 2 via a cargo box side bracket 35 so as to be rotatable in the vertical and horizontal directions, and the other end of the tension arm 32 is connected via a vehicle body side bracket 36 . It is provided on the vehicle body 1 so as to be rotatable vertically and horizontally.

The extensible cylinder 33 has a tip part on the telescopic side supported by a pivot pin 37 in the middle of the lift arm 31 and a base end part pivoted by a pivot pin 38 near the other end of the tension arm 32 . there is The telescopic operation of the telescopic cylinder 33 tilts the packing box 2 via the lift arm 31 and the tension arm 32 .

In addition, the body frame 1 and the packing box 2 are provided with hinge portions 2a on the front, rear, left, and right, respectively, which serve as the centers of tilting of the packing box 2. As shown in FIG. These hinge portions 2a are configured to be freely engageable and disengageable by suitable engaging and disengaging means. For example, if the telescopic cylinder 33 of the dumping device 3 is extended in a state in which the left and right front hinge portions 2a are disengaged and only the left and right rear hinge portions 2a are engaged, the packing box 2 can be moved to the left and right rear hinge portions 2a. is tilted backward around the

Further, if the telescopic cylinder 33 of the dumping device 3 is extended while the left front and rear hinges 2a are disengaged and only the right front and rear hinges 2a are engaged, the cargo box 2 can be moved to the right front and rear hinges 2a. centered on the right side. On the other hand, if the right front and rear hinges 2a are disengaged and only the left front and rear hinges 2a are engaged, it is tilted leftward.

The cargo box 2 includes a floor (not shown), a rear tailgate 21 standing on the rear side of the vehicle with respect to the floor, side gates 22 standing on both left and right sides of the floor, and side gates 22 standing on the left and right sides of the floor. A seat mounting frame 23 which is rotatably connected to the upper end of the gate 22 with the longitudinal direction of the vehicle as an axial direction and to which a seat can be mounted, and a front wall portion 24 erected against the used surface portion on the front side of the vehicle. and a rotation restricting portion 25 provided on the front wall portion 24 and capable of restricting rotation of the seat mounting frame 23 . In addition, the front wall portion 24 is a fixed portion whose relative position (relative posture) is always constant with respect to the floor surface portion.

The tailgate 21 and the side gate 22 are configured to be openable upward and downward. The tailgate and side gate 22 are configured to be capable of opening and closing (downward opening) by rotating about the upper hinges 211 and 221, and opening and closing (opening and closing) by rotating about the lower hinges 21P and 22P. upward opening) operation is possible. The upper hinges 211 of the tailgate 21 are provided on the first fixed posts 212 at the rear part of the vehicle on both left and right sides, and the upper hinges 221 of the side gate 22 are provided on the second inner side of the four corners (corner portions) of the luggage box 2 . is provided on a fixed post (not shown).

As shown in FIG. 1B, the seat mounting frame 23 includes a bearing member 231, a frame main body portion 233 having a support shaft 232 supported by the bearing member 231, and a front portion of the frame main body portion 233. and a protruding portion 234 protruding toward the front side of the vehicle. Note that the frame main body portion 233 is a frame-like body whose longitudinal direction is the vehicle front-rear direction.

The bearing members 231 are fixed to the front and rear ends of the upper edge of the side gate 22 . The position and number of the bearing members 231 are not particularly limited, and other positions or two or more may be used.

The frame main body portion 233 is a frame-shaped body in which a substantially rectangular outer frame 233a and two substantially comb-shaped inner frames 233b are combined with a pipe-shaped steel material. In the frame main body 233 having such a configuration, the support shaft 232 is rotatably supported by the bearing member 231, so that the operator can manually rotate the support shaft 232 as a rotation center. The frame body portion 233 can also rotate about the support shaft 232 with respect to the side gate 22 .

The protruding portion 234 is formed of a pipe-shaped member protruding from the front portion 2331a toward the front side of the vehicle with the longitudinal direction of the vehicle being the longitudinal direction. The projecting portion 234 extends to a position where its projecting end portion (left end portion in the drawing) overlaps with the side portion 241 of the front wall portion 24 when viewed from the side of the vehicle. The protruding end portion is positioned so as to be on the vehicle outer side with respect to the outer side of the vehicle, and the later-described rotation restricting portion 25 is overlapped on the vehicle outer side. That is, the protruding end portion can contact the side portion 241 of the front wall portion 24 from the outside of the vehicle, and can also contact the rotation restricting portion. 22 is in a state in which the upright posture is maintained (a state in which rotation toward the inside and outside of the vehicle is restricted). In the seat mounting frame 23 according to the present embodiment, the frame body portion 233 is rotatable around the support shaft 232 as described above, but the projection portion 234 allows the frame body portion 233 to rotate. Rotation to the inside in the vehicle left-right direction from the state in which it is erected with respect to the side gate 22 is restricted, and rotation to the vehicle outer side region from the state in which it is erected is permitted.

As shown in FIG. 2(a), the rotation restricting portion 25 has a longitudinal direction of the vehicle and is fixed to a side portion 241 of the front wall portion 24 via a hinge member C at its upper end. A plate portion 251 made of steel, a hook portion 252 fixed to the side portion 241, and a lock handle portion 253 that is also provided to the side portion 241 and capable of rotating up and down.

As shown in FIG. 2(b) showing a cross section, the plate portion 251 has a first contact portion 2511 fixed in contact with the hinge hinge member C at the upper end portion, and a first contact portion 2511. A first standing portion 2512 that is bent to stand up from the portion 2511, and a facing wall portion 2513 that is bent to face the side portion 241 of the front wall portion 24 with respect to the first standing portion 2512. a second upright portion 2514 bent toward the side portion 241 at the lower portion of the opposing wall portion 2513; and a contact portion 2515 . Although the plate portion 251 has a configuration in which a sheet of metal plate material is bent, the above portions 2511 to 2515 may be configured as a unit by welding or the like.

As shown in FIG. 2A, the opposing wall portion 2513 has a width (size in the X-axis direction) that hides a partial region of the protruding portion 234 on the side of the protruding end portion 2341, and a size that is equal to the size of the protruding end portion 2341. In comparison, it has a length (size in the Y-axis direction) with sufficient margin in the vertical direction. In other words, the opposing wall portion 2513 has a size that allows sufficient surface contact with the protruding end portion 2341, and can reliably support the frame main body portion 233, which is about to fall due to its own weight, with a desired strength. can.

The second contact portion 2515 is provided with a long hole 2515a whose longitudinal direction is the vertical direction, and the hook 252 can be inserted through the long hole 2515a. The lock handle portion 253 has a known configuration, and includes a handle body portion 2531 supported by the side portion 241, a frame portion 2532 integrally connected to the handle body portion 2531, and an annular portion 2533 that can be hooked on the hook 252. , and a spring portion 2534 housed within the frame portion 2532 . When the handle body portion 2531 is operated to the lowered position (the position shown in FIGS. 2A and 2B), the elastic force of the spring portion 2534 moves the annular portion 2533 toward the side portion 241 side (FIG. 2B). A pressing force in the direction toward (right side in (b)) is generated. With the annular portion 2533 hooked on the hook 252 inserted through the long hole 2515a, the handle body portion 2531 is moved to the lowered position, so that the second contact portion 2515 is connected to the annular portion 2533 and the front wall portion 24. , and the plate portion 251 is fixed in the illustrated state.

On the other hand, when the handle body portion 2531 is rotated leftward from the state shown in FIG. The pressing force is released. Since the plate portion 251 is fixed via the hinge member C as described above, when the pressing force is released, the annular portion 2533 is disengaged from the hook 252, and the rotation axis C1 of the hinge member C is removed. , in the direction away from the side portion 241 (clockwise direction in FIG. 2B).

When the handle body portion 2531 is in the lowered position as shown in the drawing and the second contact portion 2515 is sandwiched between the annular portion 2533 and the side portion 241 (a state in which the plate portion 251 cannot rotate), the projection portion 234 The projecting end portion 2341 of the front wall portion 24 is inserted into a gap provided between the side portion 241 of the front wall portion 24 and the opposing wall portion 2513 . The opposing wall portion 2513 is provided such that the distance L1 from the side portion 241 is slightly larger than the outer diameter of the projecting end portion 2341 . When the handle body portion 2531 is in the lowered position and the plate portion 251 is in an engaged state (unrotatable state), the protruding end portion 2341 is sandwiched between the opposing wall portion 2513 and the side portion 241. The portion 233 is restricted from rotating in the lateral direction of the vehicle with respect to the side portion 241 of the front wall portion 24 . That is, the seat mounting frame 23 is restricted from moving in the lateral direction of the vehicle relative to the front wall portion 24 , and is maintained in a standing state with respect to the side gate 22 .

Since the truck 100 can dump the cargo box 2 to the side of the vehicle using the dumping device 3, as shown in the schematic diagram of the cargo box 2 viewed from the rear of the vehicle, when dumping leftward, the dashed line diagram , and when dumping to the right, the tilting posture is taken as shown by the chain double-dashed line. Although not shown, when the cargo box 2 is dumped in the left-right direction, the upper hinges 221 and 221 for lashing the side gates 22 when the vehicle is running are used to discharge earth and sand loaded in the cargo box 2 . Of the lower hinges 22P, the lower hinges 22P are released from lashing, and the weight of the side gates 22 causes the luggage box 2 to tilt and open to the side of the vehicle around the upper hinges 221 so as to separate from the floor ( downward opening operation is performed).

In the packing box 2 according to the present embodiment, the projecting end 2341 is sandwiched between the side portion 241 of the front wall portion 24 and the opposing wall portion 2513 when the packing box 2 is in a horizontal state (state in which the vehicle can travel). The seat mounting frame 23 can be dumped to the side of the vehicle while it is held between them. Furthermore, it is also possible to return the packing box 2 from the dumped state to the horizontal state while the protruding end portion 2341 remains in the sandwiched state. That is, the seat mounting frame 23, which has been standing upright with respect to the side gate 22 with the cargo box 2 in a horizontal state, is moved to the cargo box while the rotation movement in the lateral direction of the vehicle is restricted by the rotation restricting portion 25. 2 dump operations can be performed.

As shown in FIG. 4A, when the cargo box 2 is dumped to the left side of the vehicle and the side gate 22 is opened downward in the direction of the arrow A1, the side gate 22 is opened as the cargo box 2 is dumped to the left side. The seat mounting frame 23 is rotated clockwise around the upper hinge 221 that moves to the left, and the seat mounting frame 23 also changes its attitude around the support shaft 232 fixed to the upper end of the side gate 22 whose attitude is changed in this way. be done. Specifically, the front wall portion 24 and its side portions 241 are also rotated in line with the luggage box 2 that is rotated in the left-right direction of the vehicle about the hinge portion 2a (see FIG. 1(a)). On the other hand, the seat mounting frame 23 is in a state in which the protruding end portion 2341 is sandwiched between the facing wall portion 2513 and the side portion 241 and is restricted from rotating in the vehicle left-right direction (X-axis direction). and rotated counterclockwise around the support shaft 232 so as to be pulled by the rotation of the side portion 241 . The protruding end portion 2341, which was in the position indicated by the dotted line before the start of the dumping operation, moves to the position indicated by the solid line above the front wall portion 24 as indicated by the arrow A2 (movement along the Y-axis direction). The opposing wall portion 2513 also exhibits a guide function of guiding the movement of the projecting end portion 2341 along the arrow A2. In other words, even if the hinge portion 2a, the upper hinge 221, and the support shaft 232, which are the pivot shafts of the front wall portion 24, the side gate 22, and the seat mounting frame 23, are positioned at different positions, the movement in the left-right direction of the vehicle is prevented. The protruding end portion 2341, which tends to fall counterclockwise due to the weight of the dump of the packing box 2 or the seat mounting frame 23, is moved by the opposing wall portion 2513 in a direction intersecting the surface direction (negative direction side in the X-axis direction). Rotation to is restricted. At the same time, since the movement of the protruding end 2341 in the plane direction, particularly in the direction (Y-axis direction) substantially orthogonal to the rotation direction is not restricted but permitted, the protruding end 2341 moves in the direction indicated by arrow A2 or arrow A2. It is freely movable in the direction opposite to A2. Accordingly, as the protruding end portion 2341 is moved in the Y-axis direction while being guided by the opposing wall portion 2513, the seat mounting frame 23 is also appropriately rotated around the support shaft 232 to change its posture. there is

In this way, while restricting excessive rotation in the left-right direction of the vehicle (X-axis direction) via the rotation restricting portion 25 (opposing wall portion 2513), the rotation in the direction (Y-axis direction) substantially orthogonal to the direction is restricted. is allowed to move, even if the seat mounting frame 23 is kept upright with respect to the side gate 22 when the packing box 2 is in a horizontal state, the packing box 2 can still move. is dumped to the side of the vehicle, the downward opening operation of the side gate 22 can be satisfactorily performed. Needless to say, unnecessary stress concentration does not occur on the seat mounting frame 23, and unnecessary stress concentration does not occur on the rotation restricting portion 25 and the protruding end portion 2341 that hold the upright posture of the frame 23, either. When the packing box 2 returns to the horizontal state, the side gate 22 is rotated in the direction opposite to the arrow A1, and the front wall portion 24 is also rotated clockwise. As the front wall portion 24 rotates, the seat mounting frame 23 also rotates clockwise, and the protruding end portion 23 moves in the direction opposite to the arrow A2 along with the rotation and returns to the position indicated by the dotted line.

Therefore, the worker can dump the packing box 2 to the side of the vehicle while the protruding end 2341 remains sandwiched between the opposing wall 2513 and the side portion 241 of the front wall 24 . Since the packing box 2 can be returned to the horizontal state, the packing box 2 can be moved with the seat mounting frame 23 in the upright state with respect to the side gate 22 when the packing box 2 is in the horizontal state in which the vehicle can travel. An operator who wants to dump the vehicle sideways does not need to perform any work on the seat mounting frame 23, which is preferable because the man-hours for the work do not increase. In addition, since the position of the protruding end portion 2341 is appropriately changed as the posture of the cargo box 2 is changed due to the dumping operation to the side of the vehicle, unnecessary stress is not generated on the protruding end portion 2341 and the rotation restricting portion 25. This can be avoided in advance, and no damage or the like is caused. Note that, in the present embodiment, other shapes of the plate portion 251 can be appropriately applied as long as the opposing wall portion 2513 is provided. Of course, a configuration other than that in which the plate material is bent (for example, a configuration in which a plurality of members are integrated through welding) may be used. Furthermore, although the opposing wall portion 2513 has been described as being in surface contact with the protruding end portion 2341, if the protruding end portion 2341 is circular, it can be interpreted as a line contact configuration. As long as they are in line contact, the opposing wall portion 2513 is not limited to having a predetermined flat portion, and may be configured to have a round bar or pipe-shaped member.

Further, the rotation restricting portion according to the present embodiment can release the locked state of the second contact portion 2515 of the plate portion 251 from the side portion 241 of the front wall portion 24 by operating the lock handle portion 253 . When the locked state is released, the operator can manually rotate the plate portion 251 upward (arrow A3) as shown in FIG. You can also cancel the state of being sandwiched between That is, the seat mounting frame 23 can be easily turned to the side of the vehicle (to the left in this drawing) with respect to the front wall portion 24, and the seat mounting frame 23 can be moved toward the side gate 22. can also be defeated by

As described above, in the case of the cargo box 2 and the freight vehicle 100 according to the present embodiment, the cargo box can be mounted on the side of the vehicle while the seat mounting frame 23 is kept in the upright state in which the function of preventing the scattering of earth and sand can be exhibited. It is highly convenient for the operator who can dump 2, it is less troublesome, and there can be advantageous effects that the durability does not decrease. In the present embodiment, the plate portion 251 of the rotation restricting portion 25 is configured to be engageable with and disengageable from the side portion 241 of the front wall portion 24 at the second contact portion 2515. A configuration in which the 2515 is fixed to the side portion 241 via welding or a configuration in which it is fixed via bolts and nuts may be employed. As for the shape of the plate portion 251, although it is configured to have the standing portions 2512 and 2514, it can be changed as appropriate as long as the shape can form a gap between the side portion 241 and the projecting end portion 2341 to allow the movement of the projecting end portion 2341. . Similarly, the size of the gap can be changed as appropriate as long as it is a size that allows the protruding end portion 2341 to move.

Moreover, the present invention is not limited to the above-described embodiments, and similar effects can be achieved in other embodiments. 5(a), a protruding portion 734 having a metal plate-shaped protruding base portion 7341 and a protruding tip portion 7342 is provided. , the projecting tip portion 7342 is rotatable with respect to the projecting base portion 7341 via the shaft portion 7343 (arrow A4). That is, the projecting portion 734 can be inserted into the gap between the opposing wall portion 2513 and the side portion 241 of the front wall portion 24 on the side of the seat mounting frame 23 without operating the rotation restricting portion 25. Protrusions 734 can also be removed. In addition, in the present embodiment, the projecting tip portion 7342 is configured to rotate. It is good also as a structure which can be in/out (slidable) with respect to the protruding base. In this manner, by appropriately adjusting the length of the projection 734 on the side of the seat mounting frame 23 in the vehicle front-rear direction, the seat mounting frame 23 can extend further toward the inside of the vehicle from the state in which the seat mounting frame 23 is erected with respect to the side gate 22 . It can also be in a rotated state.

In addition, as shown in FIG. 5B, a regulation base 8511 supported by the side portion 241 in a state in which the projecting end portion 2341 is close to the vehicle outer side of the side portion 241 of the front wall portion 24; In the embodiment in which the plate portion 851 is provided with the restricting tip portion 8512 that is rotatable (arrow A5) with respect to the restricting base portion 8511, the projecting end portion 2341 is formed in the gap between the restricting tip portion 8512 and the side portion 241. It is considered to be in a state of being sandwiched.

The restricting tip portion 8512 is made of a metal plate material, and includes a substantially L-shaped first restricting tip portion 8512a connected to the restricting base portion 8511 via a shaft portion 8513, and a side portion 241 and a side portion 241 with respect to the first restricting tip portion 8512a. It has a second regulation tip portion 8512b that is bent so as to face each other. As shown in the figure, when the second restricting tip portion 8512b is rotated toward the rear side of the vehicle (to the right in the figure), the protruding end protrudes into the gap between the second restricting tip portion 8512b and the side portion 241 of the front wall portion 24. A portion 2341 is sandwiched. Therefore, when the packing box 2 is in a horizontal state, the seat mounting frame 23 can be maintained in an upright state with respect to the side gates 22 . In addition, even if the packing box 2 is dumped to the side of the vehicle in this state, the projecting end 2341 can move up and down in the illustrated state as the attitude of the seat mounting frame 23 changes. , concentration of unnecessary stress on the seat mounting frame 23 and the plate portion 851 can be avoided. Further, when the upright state of the seat mounting frame 23 is released, the second control tip portion 8512b is rotated counterclockwise, and the notch portion 8512U provided in the second control tip portion 8512b engages the hook 852. It can be put into a state in which the second restricting tip portion 8512b is lashed via the lock handle portion 853 from above.

In addition, a rotation restricting portion 85 having a plate portion 851, a fork 852, and a lock handle portion 853 is provided on a fixed portion such as the front wall portion 24 where the relative posture of the packing box 2 with respect to the floor is constant without changing. is provided, the seat mounting frame 23 is directly attached to the seat mounting frame 23 via the rotation restricting portion 85 without providing a projecting portion projecting toward the front side of the vehicle in the longitudinal direction of the vehicle. 23 may be restricted from turning to the side of the vehicle. Specifically, by setting the second regulation tip portion 8512b in a state in which it can face the frame main body portion 233, the above rotation regulation can be performed. In this case, if it is desired to keep the seat mounting frame 23 in an upright position with respect to the side gate 22, a regulation that restricts further turning toward the inside of the vehicle from the upright state on the bearing member 231 or the support shaft 232 may be applied. It is preferable to provide a member (for example, Japanese Unexamined Patent Application Publication No. 2013-28327) or to provide a similar rotation restricting portion on the inner surface of the side portion 241 of the front wall portion 24 .

As described above, in the other embodiment as shown in FIGS. 5(a) and 5(b), the seat mounting frame 23 is simply erected with respect to the side gate 22 in the horizontal packing box 2. The state can be maintained, and even if the packing box 2 is dumped to the side of the vehicle in that state, unnecessary stress can be avoided from occurring in the seat mounting frame 23 and the like.

In addition, although not shown, when the projecting end is provided to be rotatable up and down about the horizontal direction of the vehicle, the projecting end is bifurcated in the left and right direction of the vehicle. A configuration may be adopted in which the side portion 241 of the front wall portion 24 can be sandwiched between the forked portions. When it is desired to maintain the upright state of the seat mounting frame 23, the bifurcated portion sandwiches the side portion 241 of the front wall portion 24, and when it is desired to cancel the upright state, the projecting end portion is turned upward to bifurcate. can be pulled out from the side portion 241 of the front wall portion 24 . With this configuration, when the vehicle is dumped on the side, it is possible to have a configuration in which rotation to both the vehicle inner side and the vehicle outer side is restricted by the bifurcated portion (a configuration in which the standing state is maintained). .

In addition, although the cargo vehicle 100 according to any of the embodiments is configured to be capable of tilting (dumping) to both sides of the vehicle, it may be configured to be capable of being dumped only to one side. In addition, the rotation restricting portion 25 is provided on the front wall portion 24 which is a constant member whose relative position and relative posture with respect to the floor are not changed so as to match the dumping operation of the packing box 2, but the same applies. Alternatively, it may be provided on a fixed column (including a known column provided on the front side of the vehicle) whose relative position or attitude relative to the floor is not changed. Furthermore, although not shown, a sheet is hung on the frame 233, and the sheet is hung to help prevent the earth and sand piled up in the packing box 2 from scattering. The sheet is hung so as to cover the outer frame 233a by passing a string through the hole provided at the end and tying it to the outer frame 233a.

Reference Signs List 1 Body frame 2 Carton 3 Dump device 21 Tail gate 22 Side gate 23 Seat mounting frame 24 Front wall portion 25 Rotation restricting portion 100 Cargo vehicle 231 Bearing member (seat mounting frame)
232 spindle (seat mounting frame)
233 Frame body (seat mounting frame)
234 protrusion (seat mounting frame)
2341 protruding end (seat mounting frame)
241 side (front wall)
251 plate portion (rotation control portion)
252 hook (rotation control part)
253 lock handle (rotation restriction)
2513 opposing wall portion (rotation restricting portion)

Claims (5)

A packing box that is mounted on a vehicle body frame whose longitudinal direction is the vehicle front-rear direction and that can be tilted in at least one of the vehicle left-right directions via a dump device provided on the vehicle body frame,
a floor;
a fixed portion fixed so that the relative position with respect to the floor portion is constant when tilted;
a side gate erected at an end portion of the floor portion in the left-right direction of the vehicle and rotatable in the left-right direction of the vehicle by being supported by upper hinges provided at both ends in the front-rear direction of the vehicle;
a seat mounting frame provided at an upper edge portion of the side gate with the longitudinal direction of the vehicle as an axial direction and rotatable in a vehicle outer region in the lateral direction of the vehicle with respect to the side gate;
a rotation restricting portion provided in the fixed portion for restricting rotation of the seat mounting frame;
is provided,
The rotation restricting portion has an opposing wall portion that faces a portion of the seat mounting frame in an upright state with respect to the side gate,
The portion of the seat mounting frame is arranged inside the facing wall portion in the vehicle left-right direction, thereby restricting rotation in a direction intersecting the surface direction of the facing wall portion and A packing box characterized by being able to change its attitude in any direction. The seat mounting frame has a frame-like body on which the seat is hung,
The packing box according to claim 1, wherein the part is a protruding portion that protrudes forward in the vehicle front-rear direction with respect to the front portion of the frame-shaped body. The rotation restricting portion is formed by bending a plate-shaped member,
An upper portion of the plate-shaped member is fixed to the fixed portion, and the standing portion is bent so as to stand against the upper portion,
The packing box according to claim 2, wherein the facing wall portion is further bent with respect to the standing portion. The rotation restricting portion is rotatable up and down at one end in the vertical direction with the longitudinal direction of the vehicle as an axial direction, and is engaged with the fixed portion at the other end in the vertical direction. 4. The packing box according to claim 3, wherein the packing box is detachably provided. A packing box according to any one of claims 1 to 4;
the vehicle body frame;
the dump device;
A freight vehicle with a laterally tiltable packing box, characterized in that it has a

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