JP6858453B2 - Truck shatterproof device - Google Patents

Description

The present invention relates to a truck shatterproof device.

Conventionally, a truck (freight vehicle) provided with an anti-scattering device has been known in order to prevent earth and sand loaded on a packing box from scattering during traveling (see, for example, Patent Document 1). The shatterproof device has a configuration in which a sheet is hung on a frame rotatably supported, for example, on the upper edge of a side gate of a packing box. Specifically, a frame on which a seat is hung (referred to as a "frame with a seat") is provided over substantially the entire length of the side gate in the longitudinal direction (front-rear direction). By rotating the frame with the seat with respect to the side gate, the frame with the seat stands upright on the side gate in a substantially vertical posture, and the frame with the seat is arranged facing the outer wall surface of the side gate. It is possible to position the frame with a seat at an outer position or the like.

Further, the shatterproof device is a lock device that switches between a locked state in which the frame with a seat cannot rotate with respect to the side gate and an unlocked state in which the frame with a seat can rotate with respect to the side gate (unlocked state). Is provided. The locking device has a configuration in which, for example, a bracket provided at the front end of the frame can be engaged with and detached from a locking member provided on the front protector (front wall) of the packing box. Then, in the locked state of the lock device, the bracket is engaged with the lock member to restrict the rotation of the frame with the seat, and the frame with the seat is held in the upright position.

Japanese Unexamined Patent Publication No. 2006-76499

In the conventional shatterproof device as described above, the bracket is fixed to the front end portion of the frame by means such as welding in order to securely hold the frame with the seat in the upright position in the locked state of the lock device. However, in the unlocked state of the locking device, the rotatable range of the seated frame is limited between the upright position and the outer position, so that the seated frame covers the upper opening of the packing box to the inner position. The frame with the seat could not be rotated. That is, when the frame with the seat is to be rotated from the upright position to the inner position, the bracket interferes with the front protector of the packing box, so that the rotation of the frame with the seat toward the inner position is hindered. It was. As described above, in the unlocked state of the lock device, the rotation range of the frame with the seat is limited, and there is a concern that the versatility of the shatterproof device is reduced.

The present invention has been made in view of the above circumstances, and the seated frame is held inside the seated frame in the locked state while the seated frame is securely held in the upright position while the locked device is released. It is an object of the present invention to provide a shatterproof device for a truck that can be easily rotated to a position.

The present invention constitutes means for solving the above-mentioned problems as follows. That is, the present invention is a shatterproof device for a truck provided with a frame with a seat along the longitudinal direction of the side gate of the packing box, and the frame with the seat is locked so as not to rotate with respect to the side gate. A lock device for switching the frame with a seat from a rotatable release state with respect to the side gate is provided, and the lock device is provided on a movable member provided at a front end portion of the frame with a seat and a packing box. The movable member has a locked member, and the movable member has a protruding position that protrudes toward the front side and engages with the lock member, and a retracted position that retracts toward the rear side and separates from the lock member. The movable member is moved to the protruding position, so that the locking device is locked and the frame with the seat is held in an upright position in a substantially vertical position. When the movable member moves to the retracted position, the lock device is released, and the movable member moves rearward to a position where it does not overlap with the packing box in a side view, and the movable member is movable. The member is rotatably provided about a shaft extending along the vehicle width direction with respect to the frame of the frame with a seat, and the movable member is provided with respect to a fixing member fixed to the front end portion of the frame. The fixing member is rotatably provided, is connected to a parallel portion arranged substantially parallel to the front end portion of the frame, and is connected to the front end of the parallel portion, and is bent in a direction substantially perpendicular to the parallel portion. The bent portion is provided, and the front end portion of the frame is fixed to the bent portion, while a predetermined gap is provided between the parallel portion and the frame in a plan view. It is supposed to be.

According to the above configuration, in the locked state of the locking device, the seated frame can be reliably held in the standing position where the seated frame stands up in a substantially vertical posture on the side gate, and the locking device is released. Therefore, the frame with the seat can be easily rotated to the inner position where the frame with the seat covers the upper opening of the packing box. That is, in the unlocked state of the lock device, the movable member moves to the rear side to a position where it does not overlap with the packing box in the side view, so that when the frame with the seat is rotated from the standing position to the inner position, the load is loaded. It is possible to prevent the movable member from interfering with the box. As a result, in the unlocked state of the lock device, a range between the inner position and the outer position where the frame with the seat is arranged facing the outer wall surface of the side gate is secured as the rotation range of the frame with the seat. This makes it possible to improve the versatility of the shatterproof device.

According to the above configuration, the locked state and the unlocked state of the locking device can be easily switched by rotating the movable member around the shaft.

Here, when there is no gap between the parallel portion of the fixing member and the frame of the frame with the seat, the seat is tied (fixed) to the frame at the place where the fixing member is provided. It becomes difficult to arrange the ropes and the like, and there is a concern that the sheet may come off from the frame at that location. On the other hand, according to the above configuration, the seat can be fixed to the frame by passing a rope or the like through the above gap, and the seat can be securely fixed to the frame by using the rope or the like even in a place where the fixing member is provided. can do. As a result, it is possible to prevent the sheet from peeling off from the frame.

In the shatterproof device of the truck having the above configuration, the frame with the seat can be rotated to the inner position covering the upper opening of the packing box in the unlocked state of the lock device, and the frame is rotatable at the inner position. However, it is preferable that the frame with the seat is held in a substantially horizontal posture by abutting on the upper edge portion of the side gate.

According to the above configuration, the frame of the frame with the seat abuts on the upper edge of the side gate to restrict the rotation of the frame with the seat, so that the frame with the seat is placed in a substantially horizontal posture at the inner position. Can be easily held.

According to the truck shatterproof device of the present invention, in the locked state of the locking device, the seated frame is securely held in an upright position in which the seated frame stands upright on the side gate in a substantially vertical position, while the locking device is held. In the released state, the seated frame can be easily rotated to the inner position where the seated frame covers the upper opening of the packing box.

FIG. 1 is a side view showing a schematic configuration of a dump truck according to an embodiment of the present invention. FIG. 2 is a side view showing a schematic configuration of a shatterproof device provided on the dump truck of FIG. FIG. 3 is a side view showing a shatterproof device when the lock device is in the released state. FIG. 4 is a rear view showing a frame with a seat located at an outer position, an upright position, and an inner position in the shatterproof device of FIG. FIG. 5 is an enlarged side view showing the bracket of the locking device. FIG. 6 is a plan view of the bracket of FIG.

An embodiment of the present invention will be described with reference to the drawings. Hereinafter, as a truck according to the embodiment of the present invention, a dump truck 100 as shown in FIG. 1 will be described as an example.

First, the schematic configuration of the dump truck 100 will be described with reference to FIG. As shown in FIG. 1, in the dump truck 100, a cargo box 2 is mounted on a vehicle body 1 having a longitudinal direction in the front-rear direction so as to be tilted (dump) rearward of the vehicle via a hinge 1a. The tilting of the packing box 2 is performed by a dump device (not shown) provided on the vehicle body 1, and by extending the dump cylinder (not shown) of the dumping device, the packing box 2 is directed toward the rear of the vehicle centering on the hinge 1a. It is tilted.

The packing box 2 includes a floor surface portion 2a, a front protector (front wall) 2b erected at the front end of the floor surface portion 2a, side gates 2c erected on the left and right sides of the floor surface portion 2a, and a floor surface portion 2a. It has a tailgate 2d erected at the rear end. A hinge 2e is provided at the upper end of the tailgate 2d, and when the loading box 2 is tilted as described above, the tailgate 2d rotates about the hinge 2e in a downward opening operation.

The dump truck 100 is provided with a scattering prevention device 10 in order to prevent the earth and sand loaded on the packing box 2 from scattering during traveling. The shatterproof device 10 will be described with reference to FIGS. 1 to 6. The shatterproof device 10 is provided on each of the left and right side surfaces of the packing box 2, but here, the shatterproof device 10 provided on one side surface (left side surface) of the packing box 2 will be described as a representative. To do.

As shown in FIGS. 1 to 6, the shatterproof device 10 has a frame 20 with a sheet provided along the longitudinal direction (front-rear direction) of the side gate 2c of the packing box 2, and the frame 20 with the sheet as a side gate. It is provided with a lock device 30 for switching between a locked state in which the frame 20 with a seat cannot be rotated with respect to 2c and an unlocked state in which the frame 20 with a seat can be rotated with respect to the side gate 2c.

The frame 20 with a seat is provided over substantially the entire length of the side gate 2c in the longitudinal direction. The frame 20 with a seat has a configuration in which the seat 24 is hung on a frame 23 rotatably supported by an upper edge portion 2f of the side gate 2c. Specifically, the frame 20 with a seat includes a bearing member 21, a frame 23 having a support shaft 22 pivotally supported by the bearing member 21, and a seat 24 hung on the frame 23.

The bearing member 21 is provided at the front end portion and the rear end portion of the upper edge portion 2f of the side gate 2c, respectively. The frame 23 has a configuration in which a substantially rectangular outer frame member 23a formed of a pipe-shaped steel material and a rod-shaped reinforcing member 23b provided inside the outer frame member 23a are combined. Support shafts 22 extending in the front-rear direction are provided at the front end portion and the rear end portion of the outer frame member 23a, respectively, and these support shafts 22 are rotatably supported by the bearing member 21 described above. The sheet 24 is hung so as to cover the outer frame member 23a of the frame 23. In this case, the sheet 24 is hung on the frame 23 by passing the rope 25 through the hole 24a formed in the outer edge of the sheet 24 and binding it to the outer frame member 23a. The front end portion of the frame 20 with a seat has an obliquely inclined shape, and is formed substantially parallel to the rear surface of the side panel 2h of the front protector 2b in a side view. A slight gap is provided between the front end of the frame 20 with a seat and the rear surface of the side panel 2h so that the frame 20 with a seat does not interfere with the side panel 2h when the frame 20 with a seat is rotated. It has become. By narrowing the gap between the front end of the frame 20 with a seat and the rear surface of the side panel 2h, it is possible to improve the effect of preventing scattering.

As shown in FIG. 4, the frame 20 with a seat is rotatable about the support shaft 22 with respect to the side gate 2c. Due to such rotation of the frame 20 with a sheet, in the present embodiment, the frame 20 with a sheet is arranged at the outer position P1 (position indicated by the alternate long and short dash line) where the frame 20 with the sheet is arranged to face the outer wall surface 2g of the side gate 2c, and the sheet. Standing position P2 (position indicated by solid line) in which the attached frame 20 stands up on the side gate 2c in a substantially vertical posture, and inner position P3 (position indicated by the alternate long and short dash line) in which the frame 20 with sheet covers the upper opening of the packing box 2. ) Etc., it is possible to position the frame 20 with a seat.

The outer position P1 is a position where the frame 20 with a seat faces each other along the outer wall surface 2g of the side gate 2c, and the standing position P2 is a position where the frame 20 with a seat substantially follows the outer wall surface 2g of the side gate 2c. It is a position that is raised in the direction (approximately vertical direction). The inner position P3 is a position where the frame 20 with a seat is laid down on the inner side of the packing box 2 in a substantially horizontal direction. When the vehicle travels with the earth and sand loaded in the packing box 2, the frame 20 with a seat may be positioned at the inner position P3 in order to prevent the earth and sand from scattering. On the other hand, when discharging earth and sand, the frame 20 with a sheet may be positioned at the upright position P2 or the outer position P1. The frame 20 with a seat can be rotated manually, or can be automatically rotated by using a hydraulic device, an electric device, or the like.

Further, at the inner position P3, as shown in FIG. 4, the frame 23 is brought into contact with the upper edge portion 2f of the side gate 2c, so that the frame 20 with a seat is held in a substantially horizontal posture. Specifically, the bearing member 21 is provided above the upper edge portion 2f of the side gate 2c, and the bearing member 21 is fixed to the upper edge portion 2f of the side gate 2c via the support member 26. There is. The connecting portion 23d that connects the outer frame member 23a of the frame 23 and the support shaft 22 is formed in a curved shape. Then, the connection portion 23d of the frame 23 abuts on the upper edge portion 2f of the side gate 2c, so that the rotation of the frame with seat 20 is restricted, and the frame with seat 20 is in a substantially horizontal posture at the inner position P3. It is supposed to be retained.

Next, the lock device 30 will be described. The locking device 30 includes an engaging member 31 and a locking member 32. When the engaging member 31 engages with the locking member 32, the locking device 30 is in the locked state as shown in FIG. 2, and when the engaging member 31 is disengaged from the locking member 32, the locking device 30 is shown in FIG. The release state is as shown in 3.

As shown in FIGS. 5 and 6, the engaging member 31 includes a fixed bracket 31b fixed to the frame 20 with a seat and a movable bracket rotatably provided about the shaft 31c with respect to the fixed bracket 31b. It is equipped with 31a. The fixing bracket 31b is integrally provided on the frame 23 (outer frame member 23a) of the frame 20 with a seat. The central axis of the shaft 31c extends along the vehicle width direction.

Specifically, the fixing bracket 31b is formed in a substantially L shape in a plan view, is connected to a parallel portion 31d arranged substantially parallel to the frame 23, and a front end of the parallel portion 31d, and is a parallel portion. It is provided with a bent portion 31e that is bent in a direction substantially perpendicular to 31d. The parallel portion 31d of the fixing bracket 31b is provided along the front-rear direction, and the bent portion 31e is provided along the vehicle width direction. Then, the front end portion 23c of the frame 23 is fixed to the bent portion 31e of the fixing bracket 31b by means such as welding. A wing nut 31h is attached to the parallel portion 31d of the fixing bracket 31b. Further, a predetermined gap C1 is provided between the parallel portion 31d of the fixing bracket 31b and the frame 23 in a plan view (see FIG. 6).

The movable bracket 31a is connected to the fixed bracket 31b by a shaft 31c. The movable bracket 31a is arranged substantially parallel to the parallel portion 31d of the fixed bracket 31b, and is provided along the front-rear direction. The movable bracket 31a is formed with two recesses 31f and 31g. Further, the movable bracket 31a is provided with a protrusion 31i protruding in the vehicle width direction.

The movable bracket 31a can rotate about the shaft 31c within a range of approximately 180 ° between the protruding position P11 shown in FIG. 2 and the retracted position P12 shown in FIG. By grasping the protrusion 31i described above, the movable bracket 31a can be manually rotated. In FIG. 3, the movable bracket 31a located between the protruding position P11 and the retracted position P12 is shown by a alternate long and short dash line.

At the projecting position P11, the movable bracket 31a projects toward the front side so as to overlap the side panel 2h of the front protector 2b in a side view. At the protruding position P11, the hook 32a of the lock member 32 is positioned in the recess 31f of the movable bracket 31a, so that the movable bracket 31a engages with the hook 32a. This prevents the movable bracket 31a from rotating counterclockwise.

On the other hand, at the retracted position P12, the movable bracket 31a does not overlap with the side panel 2h of the front protector 2b when viewed from the side, and retracts to a position where a gap is provided between the side panel 2h and the movable bracket 31a. At this retracted position P12, the movable bracket 31a overlaps with the parallel portion 31d of the fixed bracket 31b in a side view, and the wing nut 31h is positioned in the recess 31g so that the movable bracket 31a engages with the wing nut 31h. .. This prevents the movable bracket 31a from rotating clockwise. Further, by tightening the wing nut 31h, the movable bracket 31a can be reliably fixed at the retracted position P12.

As shown in FIGS. 2 and 3, the lock member 32 includes a hook 32a attached to the side panel 2h of the front protector 2b, a handle 32b supported by the side panel 2h, and a frame 32c integrally connected to the handle 32b. , A ring member 32d that can be hooked on the hook 32a, a spring 32e housed in the frame 32c, and the like. When the handle 32b is operated to the lowered position (position shown in FIGS. 2 and 3), the elastic force of the spring 32e causes the ring member 32d to move to the side panel 2h side (the back side of the paper in FIGS. 2 and 3). A pressing force is generated in the direction of the direction. Then, as shown in FIG. 2, by operating the handle 32b to the lowered position with the ring member 32d hooked on the hook 32a, the movable bracket 31a located at the above-mentioned protruding position P11 becomes the ring member 32d and the ring member 32d. It is sandwiched by the side panel 2h of the front protector 2b. As a result, the movable bracket 31a is held in a non-rotatable state.

On the other hand, when the handle 32b is operated to the raised position, the above-mentioned pressing force against the ring member 32d due to the elastic force of the spring 32e is released. In this state, when the ring member 32d is detached from the hook 32a and the handle 32b is operated to the lowered position again, the state shown in FIG. 3 is obtained. As a result, the movable bracket 31a located at the above-mentioned protruding position P11 becomes rotatable, and can be rotated to the above-mentioned retracted position P12.

In the present embodiment, the shatterproof device 10 is provided with the lock device 30 configured as described above, and when the movable bracket 31a moves to the protruding position P11, the lock device 30 is locked and the seat is locked. While the attached frame 20 is held in the upright position P2, the movable bracket 31a moves to the retracted position P12, so that the lock device 30 is released and the movable bracket 31a is viewed from the side with the packing box 2. It is characterized by moving backward to a position where it does not overlap.

According to such a shatterproof device 10, the frame 20 with a seat can be reliably held at the standing position P2 in the locked state of the lock device 30, and up to the inner position P3 in the unlocked state of the lock device 30. The frame 20 with a seat can be easily rotated. That is, in the unlocked state of the lock device 30, the movable bracket 31a moves rearward to a position where it does not overlap with the side panel 2h of the front protector 2b of the packing box 2 in the side view, so that the frame 20 with the seat is in the upright position. When rotating from P2 toward the inner position P3, it is possible to prevent the movable bracket 31a from interfering with the front protector 2b. As a result, in the unlocked state of the lock device 30, it is possible to secure a range (a range of approximately 270 °) between the outer position P1 and the inner position P3 as the rotation range of the frame 20 with a seat, and the shatterproof device. The versatility of 10 can be improved.

Further, in the present embodiment, since the movable bracket 31a is rotatably provided with respect to the frame 23 of the frame 20 with a seat about the shaft 31c extending along the vehicle width direction, the movable bracket 31a is movable around the shaft 31c. By rotating the bracket 31a, the locked state and the unlocked state of the locking device 30 can be easily switched.

Further, in the present embodiment, a predetermined gap C1 is provided between the parallel portion 31d of the fixed bracket 31b and the frame 23 of the frame 20 with a seat in a plan view. Here, when the gap C1 is not provided, it becomes difficult to arrange the rope 25 for binding (fixing) the seat 24 to the frame 23 at the place where the fixing bracket 31b is provided. There is a concern that the sheet 24 may come off from the frame 23 at the location. On the other hand, according to the present embodiment, the seat 24 can be fixed to the frame 23 by passing the rope 25 through the gap C1, and the seat 24 can be framed by using the rope 25 even in the place where the fixing bracket 31b is provided. It can be securely fixed to 23. As a result, it is possible to prevent the sheet 24 from peeling off from the frame 23.

The embodiments disclosed this time are exemplary in all respects and do not provide a basis for limited interpretation. The technical scope of the present invention is not construed solely by the embodiments described above, but is defined based on the description of the claims. In addition, the technical scope of the present invention includes all modifications within the meaning and scope equivalent to the claims.

In the above embodiment, the movable bracket 31a as a movable member is configured to move between the protruding position P11 and the retracted position P12 by rotating around the shaft 31c. However, the present invention is not limited to this, and the movable member may be configured to move between the protruding position P11 and the retracted position P12 by sliding the movable member linearly.

In the above, the case where the present invention is applied to the dump truck 100 in which the packing box 2 can be tilted by the dump device has been described. However, the present invention is not limited to this, and the present invention can be applied to a truck that is not provided with a dump truck and does not tilt the packing box 2.

INDUSTRIAL APPLICABILITY The present invention can be used as a truck scattering prevention device for preventing earth and sand loaded on a packing box from scattering during traveling.

100 dump truck (truck)
2 Packing box 2b Front protector 2c Side gate 10 Anti-scattering device 20 Frame with seat 23 Frame 24 Seat 30 Locking device 31 Engagement member 31a Movable bracket (movable member)
31b Fixing bracket (fixing member)
32 Lock member P1 Outer position P2 Standing position P3 Inner position P11 Protruding position P12 Evacuation position

Claims (2)

A truck shatterproof device in which a frame with a seat is provided along the longitudinal direction of the side gate of the packing box.
A locking device for switching between a locked state in which the frame with a seat cannot be rotated with respect to the side gate and an unlocked state in which the frame with a seat can be rotated with respect to the side gate is provided.
The lock device has a movable member provided at the front end portion of the frame with a seat and a lock member provided at the packing box.
The movable member is configured to be movable between a protruding position that protrudes toward the front side and engages with the lock member and a retracted position that retracts toward the rear side and separates from the lock member.
When the movable member moves to the protruding position, the locking device is locked, and the frame with the seat is held in an upright position in a substantially vertical posture.
When the movable member moves to the retracted position, the lock device is released, and the movable member moves rearward to a position where it does not overlap with the packing box in a side view .
The movable member is rotatably provided about a shaft extending along the vehicle width direction with respect to the frame of the frame with a seat.
The movable member is rotatably provided with respect to a fixing member fixed to the front end portion of the frame.
The fixing member includes a parallel portion arranged substantially parallel to the front end portion of the frame, and a bent portion connected to the front end of the parallel portion and bent in a direction substantially perpendicular to the parallel portion. ,
A truck shatterproof device, characterized in that a front end portion of the frame is fixed to the bent portion, and a predetermined gap is provided between the parallel portion and the frame in a plan view. In the truck shatterproof device according to claim 1,
When the lock device is released, the frame with the seat can rotate to an inner position that covers the upper opening of the packing box.
A truck shatterproof device, characterized in that, at the inner position, the frame is held in a substantially horizontal posture by abutting the upper edge portion of the side gate.

Images