JP2942768B1 - Dump truck - Google Patents

Abstract

[PROBLEMS] A dump truck that is capable of transporting not only cargo having no regularity such as powders and granules, liquids, etc. but also cargo having a regularity such as solids, and is excellent in economy and safety. Offer. SOLUTION: A dump truck 1 is provided in a packing box 4 and is provided with a bag body 20 capable of accommodating an irregular-shaped cargo, and is provided on a front side in the packing box 4 to support the bag body 20 and to move backward. A front elevating plate 11 which can move up and down while moving, a rear elevating plate 12 which can support the bag body 20 and can pivot so as to jump rearward, and a front elevating plate 1 protruding from the floor surface 40a of the packing box 4;
1 and a locking mechanism 50 having a locking member 57 capable of lowering below the floor surface 40 a of the packing box 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dump truck capable of transporting not only cargo having no regularity such as powders and granules, liquids, but also solid cargoes and the like.

[0002]

2. Description of the Related Art Conventionally, when transporting, for example, polypropylene granules used as raw materials for resin products, or granules such as grains such as rice and soybeans, a so-called tank lorry having a dedicated tank is generally used. is there. The tank of such a tank lorry is equipped with a dedicated tank for filling a powder or the like. The dedicated tank is connected to a hydraulic elevating device fixed to the front of the loading platform. When unloading the powder or the like, operate the hydraulic drive device, etc.
Raise the front of the dedicated tank. As a result, the dedicated tank is inclined, and the powder and the like are discharged from the discharge port provided at the rear of the dedicated tank.

[0003] When a large amount of powder or granules is transported, a bag made of a synthetic resin called a so-called flexible container pack may be used. In such a flexible container pack,
Approximately 1 ton of powder or granules can be filled. When transporting powders and granules using the flexible container pack, the powders and the like are packed into the flexible container pack manually,
It is loaded on a truck (a so-called wing car). Similarly, the unloading operation of the powder or the like is performed manually.

[0004]

However, conventionally,
There are the following problems in transporting powders and the like.

[0005] That is, when a tank lorry having a dedicated tank is used to transport irregular shaped cargo such as powder, granules, and liquid, or when a flexible container containing irregular shaped cargo is transported by a wing truck. In many cases, cargo is actually loaded on tank lorries only one way. For this reason, in the conventional atypical freight transportation, there is a problem that the transportation cost increases as the transportation distance increases due to a low utilization rate of truck vehicles.

Therefore, the present invention is capable of transporting not only cargoes having no fixed shape such as powders and granules, liquids, but also solid shaped products such as solids, and is excellent in economy and safety. To provide a dump truck.

[0007]

According to the first aspect of the present invention, there is provided a dump truck according to the present invention, in which a non-standard-size cargo such as powder, granules, and liquid, and a solid-like material such as solids are contained in a loadable box. Dump trucks each capable of loading standard cargo, provided in a packing box, and capable of accommodating irregular-shaped cargo, and a bag body provided on the front side of the packing box, supporting the bag body and A front elevating member capable of ascending while moving to the rear, a rear elevating member rotatable to support the bag body and jump back, and engageable with the front elevating member protruding from the floor of the packing box. And a lock mechanism having a locking member that can be lowered from the floor surface of the packing box.

When transporting irregular-shaped cargo using this dump truck, the front lifting member and the rear lifting member are lowered. The bag is supported by a front elevating member and a rear elevating member located on the floor of the packing box. At this time, the lock mechanism is operated. Thereby, the locking member protrudes from the floor of the packing box and engages with the front elevating member. Then, the atypical cargo is accommodated inside the bag. When discharging the irregular shaped cargo from the packing box, the packing box is inclined.

On the other hand, in the case of transporting the fixed cargo, the locking mechanism is released, the locking member is lowered from the floor of the cargo box, and the front lifting member and the rear lifting member are raised.
The front elevating member gradually moves upward while moving backward, and the rear elevating member rotates so as to jump up rearward. A bag for accommodating the irregular-shaped cargo is stored in the upper part of the cargo box while being supported by the front elevating member and the rear elevating member. Thereby, a space for accommodating the standard cargo is secured between the front lifting member and the rear lifting member and the floor surface of the packing box.

As described above, this dump truck can transport not only cargo having no fixed shape such as powders and granules and liquids but also cargo having fixed shape such as solids. When transporting the irregular-shaped cargo, the front elevating member is locked to the floor of the packing box by the lock mechanism, so that the front elevating member can be prevented from rattling during traveling of the dump truck. Further, the bag housing the irregular-shaped cargo is maintained in a stable state in the packing box. Furthermore, when transporting the regular cargo, the locking member of the lock mechanism does not descend from the floor of the packing box and does not protrude, so that there is no hindrance in accommodating the regular cargo.

In this case, the front elevating member forms a link mechanism with a plurality of arms, one end of which is rotatably supported on the upper part of the packing box and arranged at a predetermined interval. Preferably, it is pivoted by a drive. By adopting such a configuration, the front elevating member can be smoothly and reliably moved up and down, and
The bag can be stored safely and reliably above the packing box.

When the front elevating member is lowered, a predetermined gap is formed between the floor surface of the packing box and the lower surface of the front elevating member, and the front elevating member engages with the locking member. Then
It is preferable that the cargo box is drawn to the floor side of the packing box. Thereby, even if the front elevating member is operated, the front elevating member does not interfere with the floor surface of the packing box,
Both will not be damaged. Further, by locking the engaging member engaging with the front elevating member toward the floor of the packing box by the lock mechanism, when transporting the irregular-shaped cargo, the front elevating member can be securely moved relative to the packing box. Can be locked.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view showing a dump truck according to the present invention. The dump truck 1 shown in FIG. 1 has a cargo box 4 arranged on a carrier 3 extending behind the cab 2. The packing box 4 is rotatably supported with respect to the rear end portion of the packing board 3. Behind the cab 2, a hydraulic cylinder 5 as a cargo box driving device is arranged. Hydraulic cylinder 5
Is connected to the front of the packing box 4 and has a hydraulic cylinder 5
Is extended, the packing box 4 inclines with its front portion rising (see FIG. 15).

The packing box 4 is made of an aluminum alloy or the like, and is appropriately reinforced with beams. Figures 1-3
As shown in the figure, doors 6a and 6b that can be opened and closed in the vertical direction are provided on both sides of the packing box 4. Of the doors 6a and 6b, the lower door 6b is divided into two right and left doors. The upper front end of the packing box 4 is inclined downward, and an introduction hatch 7 is provided in this portion to be used when loading fixed-size cargo such as powders and liquids into the packing box 4. . Furthermore,
On the rear end face of the packing box 4, a funnel-shaped discharge portion 8 having a discharge nozzle 8a is provided. The discharge unit 8 communicates with the inside of the packing box 4, and fixed-size cargo such as powders and liquids is discharged from the discharging nozzle 8 a to the outside of the packing box 4.

FIG. 4 shows the internal structure of the packing box 4. As shown in FIG. 1, a front elevating plate (a front elevating member) 11 and a rear elevating plate 12 (a rear elevating member) are arranged inside the packing box 4. The front elevating plate 11 is provided on the front side in the packing box 4 and has a total length of about two thirds of the total length of the packing box 4 (for example, a total length of 5000 mm and a width of 2200 m).
m). On both sides of the front elevating plate 11, three arms 14a, 14 are provided at predetermined intervals.
The lower ends 141 of the b and 14c are rotatably connected. Upper end 142 of each arm 14a, 14b, 14c
Is rotatably supported on the upper part of the packing box 4. Thereby, each arm 14a, 14b, 14c, the front elevating plate 11, and the packing box 4 form the link mechanism 10.

Of the arms 14a, 14b, 14c, one end of a fluid cylinder 16 for driving the link mechanism 10 is connected via a frame 15 to the arm 14a located at the forefront. The other end of the fluid cylinder 16 is rotatably supported on an upper part of an inner surface in front of the packing box 4. The fluid cylinders 16 are provided one by one on the left and right. When the front elevating plate 11 is located at the lowest point (the state shown in FIG. 4), the fluid cylinder 16 and the arms 14a, 14b, 14
c extends obliquely, but the fluid cylinder 16
Extend in a state where the arms 14a, 14b, and 14c are slightly inclined.

Thus, when the fluid cylinder 16 is extended, the arms 14a, 14b, and 14c rotate counterclockwise in FIG. 4, and the front elevating plates 11 move upward while moving backward. become. The fluid cylinder 1
If 6 is contracted, the front elevating plate 11 will descend while moving forward. Further, a bag connecting portion 17 is fixed to the frame 15 fixed to the arm 14a. At the upper part of the bag connecting portion 17, an introduction pipe 18 is provided which extends to the vicinity of the introduction hatch 7 provided in the packing box 4.

As shown in FIG. 5A, the lower end 141 of each of the arms 14a, 14b, 14c (on the side of the front elevating plate 11) is inserted into the arm body 140 so as to be extendable and contractible. Are connected by two tension springs 143. Thereby, torsion, bending, vibration, and the like generated in the front elevating plate 11 and the like can be absorbed. Furthermore,
Each arm 14a, 14b, 14 is provided on the floor plate 40 of the packing box 4.
Guide part 41 is provided corresponding to c.

When the arms 14a, 14b, and 14c are rotated to lower the front elevating plate 11 completely, the lower ends 141 of the arms 14a, 14b, and 14c are positioned as shown in FIG.
And (b), it fits into the guide portion 41 provided on the floor plate 40 of the packing box 4. The guide portion 41 is provided in a recess provided in the flat floor plate 40. Here, as shown in FIG. 5B, the rear portion of the guide portion 41 is widened, and the lower end portion 141 is smoothly connected to the guide portion 4.
Get stuck in one. The lower end portion 141 is connected to the guide portion 4.
1 and comes into contact with the front wall portion 42. Thereby, each arm 14
The forward rotation of a, b, c is restricted. At this time, a predetermined gap C (for example, 10 mm) is formed between the lower surface 11a of the front elevating plate 11 and the upper surface (floor surface) 40a of the floor plate 40 of the packing box 4. Thus, even if the front elevating member 11 is operated, the front elevating member 11 and the floor plate 40 of the packing box 4 do not interfere with each other, so that both are not damaged.

On the other hand, as shown in FIG. 4, the rear elevating plate 12 is rotatably supported by the packing box 4 via a supporting portion 13 provided at the rear of the packing box 4. One end of a fluid cylinder 19 is connected to a side of the rear elevating plate 12. The other end of the fluid cylinder 19 is rotatably supported on the inner surface behind the packing box 4. Fluid cylinder 19
Are provided one by one on the left and right. When the fluid cylinder 19 is extended, the rear elevating plate 12 is positioned horizontally as shown in FIG. When the fluid cylinder 19 is contracted,
The rear elevating plate 12 is moved 90
Rotate °. The front end of the rear elevating plate 12 is obliquely inclined as shown in FIG. 4, and an extension 120 is formed at the center thereof (see FIG. 8). A smooth sheet material such as nylon is attached to the surface of the extension 120.

When the link mechanism 10 is rotated to lower the front elevating member 11 completely, and the fluid cylinder 19 is extended to completely lower the rear elevating plate 12 (the state shown in FIG. 4), The extension 120 located at the tip of the rear elevating plate 12 is located below the rear end of the front elevating plate 11. That is, the lower side of the rear end portion of the front elevating plate 11 is formed so as to be inclined upward, and has a concave portion (not shown) in which the extension portion 120 is accommodated. The rear end of the front elevating plate 11 covers the front end and the extension 120 of the rear elevating plate 12 located horizontally.

The above-mentioned front elevating plate 11 and rear elevating plate 12
, Respectively, supports a bag body 20 capable of accommodating an atypical cargo. The bag 20 is made of a cloth material coated with nylon PVC, while weaving warp and weft made of a durable material, and has a tubular shape as shown in FIG. The front end 20f of the bag 20 is
It is fixed to the bag connecting part 17 fixed to a. In this case, the front end of the bag 20 is folded back to make it double. And
It covers over the bag connection part 17 and is fastened using the metal band 21. On the other hand, the rear end 20r of the bag 20
It is connected and fixed to a discharge section 8 provided at the rear of the packing box 4. In this case, similarly to the front end 20f, the rear end of the bag 20 is folded back to be double. Then, it is covered with a connecting portion (not shown) connected to the discharge portion 8 in the packing box 4 and is fastened using a metal band 22.

The bag 20 may include a strip 23 if necessary.
Fix and reinforce. Further, a plurality of suspension rings 24 are fixed to an upper portion of the bag body 20. Then, a plurality of hooks (not shown) are attached to the upper part in the packing box 4, and the hooks and the suspension ring 24 are connected via a belt (not shown). In addition,
A so-called town may be formed on the bag body 20 at an appropriate interval. In this way, the bag 20, which is arranged in the packing box 4, can accommodate powder, granules, liquid, and the like via the introduction hatch 7 and the introduction pipe 18. If the packing box 4 is inclined, the irregular-shaped cargo in the bag 20 can be discharged from the discharge nozzle 8a of the discharge unit 8.

FIGS. 7 and 8 show that the link mechanism 10 is rotated to completely raise the front elevating member 11, and the fluid cylinder 19 is contracted to completely raise the rear elevating plate 12 (flipped up). It shows the status. In this state, the front elevating member 11 is positioned horizontally near the rear of the upper part in the packing box 4. In addition, the rear elevating member 12 stands almost vertically. The bag body 20 fixed to the bag connecting section 17 and the discharge section 8 is lifted by the front lifting plate 11 and the rear lifting plate 12, and is partitioned by the packing box 4, the front lifting plate 11 and the rear lifting plate 12. Is stored in the space. At this time, as shown in FIG. 4 and FIG.
If the roller 110 is provided at the rear end of the bag 4, the bag 20 can be stored in the upper part in the packing box 4 without damage. As shown in these drawings, when the front lifting plate 11 and the rear lifting plate 12 are completely lifted,
The front end portion (extended portion 120) of the rear elevating member 12 supports the lower surface of the rear end portion of the front elevating plate 11. As a result, a space 4b for loading the standard cargo is formed below the front elevating plate 11 and in front of the rear elevating plate 12.

As shown in FIGS. 4 and 7, an elevating member locking mechanism 25 which can be engaged with the front elevating member 11 is provided at an upper portion in the packing box 4. This lifting member locking mechanism 2
5 has a fluid cylinder 26 as shown in FIG.
A cylindrical body 29 that rotatably supports the roller 28 is fixed to a distal end of the fluid cylinder 26 via a link.
The cylindrical body 29 is rotatably supported by a bracket 30 fixed to an upper part of the inner surface at the rear of the packing box 4. In addition, cylindrical body 2
Reference numeral 9 is connected to one end of a long rod 31 via a link. At the other end of the rod 31, a cylindrical body 33 that rotatably supports the roller 32 via a link is fixed. The cylindrical body 33 is rotatably supported by a bracket 34 fixed to an upper part of the inner surface of the front part of the packing box 4.

On the other hand, on both sides of the front lifting plate 11, FIG.
As shown at 0, a guide portion 111 is provided. The upper end 111a of the guide 111 protrudes toward the inner side of the packing box 4. Accordingly, when the fluid cylinder 26 of the elevating member locking mechanism 25 is contracted in conjunction with the ascent / descent operation of the front elevating plate 11, the rollers 28 and 32 protrude inside the packing box 4 (the lower side in FIG. 9). Then, each of the rollers 28 and 32 engages with the lower surface of the upper end portion 111a of the guide portion 111. This makes it possible to securely fix the front elevating member 11 to the upper part of the packing box 4, and to improve the safety during transportation. When the fluid cylinder 26 is extended, the rollers 28 and 32 rotate counterclockwise in FIG. 9 and move to the side of the packing box 4.
And the front elevating plate 11 can be released from engagement.

Next, the lock mechanism 50 provided in the packing box 4 of the dump truck 1 will be described. The lock mechanism 50 is for locking the front elevating plate 11 that has been completely lowered to the floor plate 40 of the packing box 4. FIG.
As shown in FIGS. 1 and 12, below the floor plate 40 of the packing box 4, two lock mechanisms 50 are provided. In this dump truck 1, an integrated lock mechanism 5 is provided at a position spaced from the front end of the packing box 4 by about one third of the entire length of the packing box 4.
The lock mechanism 50 is disposed at a position separated from the rear end of the packing box 4 by about one third of the entire length of the packing box 4. Each lock mechanism 50 has an integral fluid cylinder 51. One end of the fluid cylinder 51 is rotatably supported by a bracket 52 fixed to the lower surface of the floor plate 40. A shaft 53 extending in the width direction of the dump truck 1 is connected to the other end of the liquid cylinder 51.

Links 54 are fixed to both ends of the shaft 53. As shown in FIG. 12, a link 55 extending forward is rotatably connected to a tip of each link 54. A link 56 extending in a substantially vertical direction is rotatably connected to a front end of the link 55.
A locking member 57 is rotatably connected to the upper end of the link 56. The locking member 57 includes a free end 57
a and the base end portion 57b. The base end 57 b of the locking member 57 is slidable along the outer periphery of the roller 58. The rollers 58 are fixed to the floor plate 40 via brackets (not shown). Base end portion 5 of locking member 57
A roller 59 is rotatably supported near the center of 7b. Further, a mounting member 60 is fixed to the lower surface of the floor plate 40, and a roller guide 61 formed by bending an elongated plate material is fixed to the mounting member 60. The roller 59 attached to the locking member 57 is in contact with the roller guide 61.

When the fluid cylinder 51 is contracted, the locking member 57 is in a collapsed state as shown in FIG. 12, and is located below the floor plate 40. FIG.
When the fluid cylinder 51 is extended from this state, the links 54 and 55 rotate counterclockwise in FIG. The link 56 connected to the link 55
Moves down. Then, the locking member 57 connected to the link 56 is pulled by the link 56 and slides along the outer periphery of the roller 58. At this time, the roller 59 provided on the locking member 57 rolls on the inner peripheral surface of the roller guide 61. Therefore, the locking member 57 is not
As shown by the dashed line, it gradually rises while rotating clockwise and protrudes from an opening 40 b formed in the floor plate 40. And the concave portion 57c provided in the locking member 57 is
It engages with a locking pin 112 fixed at a predetermined position on the front elevating plate.

At the stage when the recess 57c and the locking pin 112 are engaged, as shown in FIG. 13, a predetermined gap C is provided between the lower surface 11a of the front elevating plate 11 and the upper surface 40a of the floor plate 40.
Only separated. When the fluid cylinder 51 is further extended from this state, the front elevating plate 11 is drawn toward the upper surface 40a of the floor plate 40 as shown in FIG. The gap between the lower surface 11a of the front elevating plate 11 and the upper surface 40a of the floor plate 40 is substantially zero as shown in FIG. Thereby, the front elevating plate 11 is locked to the floor plate 40 by the lock mechanism 50. On the other hand, when releasing the front elevating plate 11 from the floor plate 40, the fluid cylinder 51 may be gradually contracted.

As described above, when the front elevating plate 11 is lowered, the lock mechanism 50 is operated to cause the locking member 57 to protrude from the upper surface 40 a of the floor plate 40 of the packing box 40, and The locking pin 112 provided is engaged.
Thereby, when transporting the irregular-shaped cargo, the front elevating plate 11 can be locked to the cargo box 4. Further, when the front elevating plate 11 is raised, the locking member 50 can be released from the upper surface 40 a of the floor plate 40 by releasing the lock mechanism 50.

The operation of the above-described dump truck 1 will be described below.

When transporting irregular-shaped cargo using the dump truck 1, the front fluid cylinder 16 is contracted and the rear fluid cylinder 19 is extended, so that the front lifting plate 11 and the rear lifting plate 12 are connected. Lower (state shown in FIG. 4). The bag body 20 is supported by a front elevating plate 11 and a rear elevating plate 12 located on the floor plate 40 of the packing box 4. At this time, the lock mechanism 50 is operated. Thereby, the locking member 57 protrudes from the floor surface 40a of the floor plate 40 of the packing box, and the locking pin 11 provided on the front elevating plate 11
Engage with 2.

Then, the introduction hatch 7 provided in the packing box 4 is opened, and an irregular-shaped cargo such as powder, granules, and liquid is injected into the bag 20 through the introduction pipe 18. When the atypical cargo is stored in the bag 20, the dump truck 1 is driven to the destination. During the traveling of the dump truck 1, the front lifting plate 11 is moved by the lock mechanism 50 to the floor plate 4 of the packing box 4.
Since it is locked with respect to 0, the front elevating plate 11 is prevented from rattling. Further, the bag 20 containing the irregular-shaped cargo is maintained in a stable state in the packing box 4. When the dump truck 1 arrives at the destination, unload the irregular-shaped cargo. When discharging the irregular-shaped cargo from the bag body 20 in the packing box 4, the discharging nozzle 8a of the discharging unit 8 is opened, and the hydraulic cylinder 5 is extended to tilt the packing box 4 as shown in FIG. Let it. Thereby, the irregular-shaped cargo is discharged from the discharge nozzle 8a.

For example, in the case of transporting a fixed-size cargo after unloading the non-fixed-size cargo, the lock mechanism 5 may be used.
The first fluid cylinder 51 is contracted to release the engagement between the front elevating plate 11 and the locking member 57. Then, the front fluid cylinder 16 is extended and the rear fluid cylinder 19 is contracted, so that the front lifting plate 11 and the rear lifting plate 12 are completely raised. In this case, first, the front fluid cylinder 16 for driving the front elevating plate 11 is operated, and then the rear fluid cylinder 19 for driving the rear elevating member is operated. The front elevating plate 11 gradually rises while moving backward. Further, the rear end of the front elevating plate 11 is pushed up by the front end portion (extended portion 120) of the rear elevating plate 12 which rotates so as to jump back.

At this time, since a smooth sheet material such as nylon is adhered to the surface of the extension 120, the front lifting plate 11 and the rear lifting plate 12 slide smoothly with each other. Then, a state in which the rear elevating plate 12 is turned 90 ° to be vertical, that is, the rear end of the front elevating plate 11 is
The operation of the fluid cylinder 16 and the operation of the fluid cylinder 16 are stopped while being supported by the extension 120 of the rear elevating plate 12. Also, the fluid cylinder 26 of the lifting member locking mechanism 25
Is contracted to lock the front elevating plate 11 on the upper part of the packing box 4. Thereby, the bag 2 for accommodating the irregular shaped cargo
0 is stored in the upper part of the packing box 4 while being supported by the front lifting plate 11 and the rear lifting plate 12, and the front lifting plate 1
1 and between the rear elevating plate 12 and the floor plate 40 of the packing box 4,
Space for accommodating standard cargo is secured.

As described above, the dump truck 1 is capable of transporting not only cargo having no fixed shape such as powders and granules and liquids, but also cargo having fixed shape such as solids. Also,
When the front elevating plate 11 is raised and lowered, the front elevating plate 11 can be stably and reliably raised to the upper part of the packing box 4 by utilizing the bouncing operation of the rear elevating plate 12 as an auxiliary. Further, the front elevating plate 1 located above the packing box 4
1 is supported by the rear elevating plate 12, so that the bag 20
Can be reliably stored in the upper part of the packing box 4 in a stable state. Further, when transporting the regular cargo, the locking member 57 of the lock mechanism 50 is connected to the upper surface 40 a of the floor plate 40 of the packing box 4.
Because it does not protrude from the ground, it does not hinder the storage of regular cargo.

[0039]

Since the dump truck according to the present invention is constructed as described above, the following effects can be obtained. That is, by providing a lock mechanism having a locking member that protrudes from the floor of the packing box and can be engaged with the front elevating member, and that can be lowered from the floor of the packing box, It is possible to transport not only cargo that does not have a fixed form such as
It is possible to realize a dump truck excellent in economy and safety.

[Brief description of the drawings]

FIG. 1 is a side view of a dump truck according to the present invention.

FIG. 2 is a front view of the dump truck according to the present invention.

FIG. 3 is a rear view of the dump truck according to the present invention.

FIG. 4 is a schematic diagram showing an internal structure of a packing box included in the dump truck of FIG. 1;

FIG. 5 is an enlarged view showing a portion V in FIG. 4;

FIG. 6 is a perspective view showing a bag included in the dump truck of FIG. 1;

FIG. 7 is a schematic diagram showing an internal structure of a packing box included in the dump truck of FIG.

FIG. 8 is a schematic diagram showing a front elevating plate and a rear elevating plate.

FIG. 9 is a schematic diagram showing a lifting member locking mechanism.

FIG. 10 is a schematic diagram showing an operating state of a lifting member locking mechanism.

FIG. 11 is a schematic view showing a lock mechanism included in the dump truck of FIG. 1;

FIG. 12 is a schematic diagram showing a lock mechanism included in the dump truck of FIG.

FIG. 13 is a schematic diagram showing a lock mechanism included in the dump truck of FIG.

FIG. 14 is a schematic diagram showing a lock mechanism included in the dump truck of FIG. 1;

FIG. 15 is a side view showing a state where the packing box of the dump truck of FIG. 1 is inclined.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Dump truck, 4 ... Packing box, 11 ... Front elevating plate (front elevating member), 12 ... Rear elevating plate (rear elevating member), 2
0: bag body, 50: locking mechanism, 57: locking member.

──────────────────────────────────────────────────続 き Continued on the front page (72) Mikio Ohno 3-1 Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Prefecture Inside the Tokyu Vehicle Manufacturing Co., Ltd. (72) Daisuke Tajima 3-1 Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Inside Tokyu Corporation (72) Inventor Shigeru Yamanaka 3-1 Okawa, Kanazawa-ku, Yokohama, Kanagawa Prefecture Inside (72) Inventor Koji Okuda 3-1 Okawa, Kanazawa-ku, Yokohama, Kanagawa Inside Tokyu Vehicle Manufacturing Co., Ltd. (72) Kenichi Murai 3-1 Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Prefecture Inside (72) Inventor Kunihiko Tanabe 3-1 Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Prefecture (56) References JP-A-61-200043 (JP, A) JP-A-11-11141 (JP, A) JP-A-6-8082 (JP, A) -70323 (JP, U) Japanese Utility Model 62-71044 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60P 3/42 B60P 1/02

Claims (3)

(57) [Claims] 1. A dump truck capable of loading an irregular cargo such as powder, granules, and liquid and a regular cargo such as a solid object in a cargo box that can be tilted, A bag body that is provided in the inside and that can accommodate the irregular-shaped cargo; and a front elevating member that is provided on the front side in the packing box and that can support the bag body and move upward while moving backward. A rear elevating member provided on the rear side in the packing box and rotatable to support the bag body and jump backward, and engages with the front elevating member protruding from the floor surface of the packing box. And a lock mechanism having a locking member that can be lowered from the floor of the packing box. 2. The link mechanism according to claim 1, wherein the front elevating member has one end rotatably supported at an upper portion of the packing box and a plurality of arms arranged at a predetermined interval. The dump truck according to claim 1, wherein the dump truck is rotated by a driving device. 3. A predetermined gap is formed between a floor surface of the packing box and a lower surface of the front elevating member when the front elevating member is lowered, and the front elevating member is The lock mechanism is drawn to the floor side of the packing box by engaging with a stop member.
Dump truck as described in.