JPS629460B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo box for loading foreign materials in a dump truck.

Generally, when transporting cargo using a dump truck or the like, after the cargo is transported to the destination, the vehicle is mostly driven empty on the way back. However, since it is extremely wasteful to travel empty, there is a growing trend to increase transport efficiency by loading some cargo on the way back.

However, with conventional dump truck boxes, there is no problem when loading the same kind of cargo during a round trip, but when loading different kinds of cargo, for example, cement,
When transporting coal on the way home, there is a problem in that even after the cement has been discharged to the destination, cement adheres to the inner surface and corners of the cargo box, so if the coal is loaded as is, cement will adhere to the coal. If it is decided to clean the inside of the cargo box after discharging the cement in order to eliminate this problem, there is a drawback that a great deal of effort and time must be spent for this cleaning.

The present invention solves the above-mentioned drawbacks and provides a cargo box that can improve transportation efficiency.Examples will be described below with reference to the drawings. 1 is a dump truck;
The dump truck 1 has a structure in which a cargo box 3 is mounted on a vehicle body 2 so as to be tiltable backward.

Next, to explain the packing box 3 in detail, first, the side walls 5, 5 and the front wall 6 are erected and fixed on both sides and the front end of the floor board 4, and at the rear end of the floor board 4, The rear sliding door 8 is supported so as to be rotatable rearward through the provided brackets 7, 7, and the lower end of the rear sliding door 8 is secured by lashing devices 9, 9.

Further, a discharge port 10 extending diagonally backward is provided at the rear of the floor plate 4, and a discharge port cover 11 is attached to the tip of the discharge port 10.

Next, in the left and right side corners of the packing box 3, there are
A pair of shafts 12, 12 extending in the longitudinal direction are rotatably supported by brackets 13 erected on the floor plate 4. A pair of flat deck plates 14, 14 of the same size are fixed at one end.

Further, the front ends of the shafts 12, 12 are made to protrude from the front wall 6, and are connected to hydraulic cylinders 15, 15 provided on the front wall 6 via arms 16, 16 as shown in FIG. The deck plates 14, 14 are rotated by the expansion and contraction operation of 15.

Reference numeral 17 denotes a bag-shaped container formed in a sealed manner from a flexible material such as a rubber sheet.As shown in FIG. , the upper part of the container body 18 is provided with a charging opening lid 1.
Inlet ports 20 and 20 with 9 and 19 are provided, and a discharge chute 21 that extends diagonally backward is provided at the rear of the lower part, and mounting pieces 2 are provided horizontally at three locations on both sides, upper and lower.
As shown in FIG.
The lower one is fixed to the floor plate 4, and the discharge chute 21 is inserted into the discharge port 10 of the floor plate 4 as shown in FIG. 4, and is folded in half to close the discharge chute 21. There is.

Furthermore, when the deck plates 14, 14 are rotated downward, the bag-shaped container 17 can be folded and stored below the deck plates 14, 14, as shown in FIGS. 6 and 7. 23, 23 are seal members provided between the deck plates 14, 14 and the side walls 5, 5.

Reference numeral 24 denotes a canopy opening/closing device that covers the upper part of the loading box 3.
5, 25, a sheet 26 is stretched between the front and rear bending links 25, 25, one end of the bending link 25 is pivotally supported on the upper edge of the cargo box 3, and the other end is pivotally supported in the center of the cargo box 3. The seat 26 is pivotally supported at one end of a rotating arm 27, and the bending link 25 is rotated by a drive device 28 to open and close the seat 26.

The present invention has the above-mentioned structure. Next, the operation will be explained. First, when transporting cement, the hydraulic cylinders 15, 15 on the front wall 6 of the cargo box are
The bag-like container 17 is extended as shown in the solid line, and the deck plates 14, 14 are rotated upward to extend the bag-like container 17 as shown in FIGS. 4 and 5.

The inlet 20 of the protruding bag-like container 17 is opened and cement is poured into the bag-like container 17, and after the cement is stored in the bag-like container 17, it is transported to a predetermined discharge location.

At this time, the discharge chute 21 is folded in two to prevent cement from spilling. Further, since the canopy opening/closing device 24 is unnecessary, it is stored on the side of the cargo box 3.

When arriving at the discharge location, open the discharge port cover 11,
The discharge chute 21, which had been folded up to that point, is extended, and in this state, the cargo box 3 is tilted as shown by the dashed line in FIG. The cement in the bag-like container 17 is thereby discharged through the discharge chute 21.

Next, when the coal is to be transported on the way back, the hydraulic cylinders 15, 15 on the front wall 6 of the cargo box are contracted as shown by the dashed lines in FIG. 2, and the deck plates 14, 14 are rotated downward. Then, the bag-like container 17 that had been sticking out until then is folded up due to its flexibility and is stored below the deck plates 14, 14 as shown in FIGS. This will form a surface.

The coal is stored in this state and transported to a predetermined discharge location.

At that time, the canopy opening/closing device 24 covers the upper part of the cargo box 3 to prevent the coal from spilling out.
Further, the spaces between the deck plates 14, 14 and the side walls 5, 5 are sealed by seal members 23, 23.

When arriving at the discharge location, the securing devices 9, 9 of the rear sliding door 8 are removed, and in this state the cargo box 3 is tilted as shown by the dashed line in FIG. As a result, the rear fan door 8 is opened by its own weight as shown by the chain line in FIG. 6, and the coal is discharged from the rear of the cargo box 3.

In this way, by selectively using the packing box 3 and the bag-shaped container 17 depending on the type of cargo, it is possible to reliably prevent coal and cement from being mixed together.

In addition, although coal and cement were demonstrated in the Example, it is not limited to this.

As described above, the present invention provides a flexible bag-like container inside a packing box, so that the cargo can be stored in the bag-like container when the bag-like container is extended, and in the packing box when the bag-like container is stored. Therefore, different types of items can be loaded on the way back and forth, and the resulting mix-up can be reliably prevented, making it possible to maintain the quality of the loaded items and increase transportation efficiency.

[Brief explanation of the drawing]

Figure 1 is an overall view, Figure 2 is a front view of the packing box, Figure 3 is a rear view, Figure 4 is a sectional view taken along line A-A in Figure 3, Figure 5 is a sectional view taken along line B-B in Figure 4, and 6 and 7 are cross-sectional views of the bag-like container when it is stored, and FIG. 8 is a perspective view of the bag-like container. 3 is a cargo box, 8 is a rear sliding door, 14 is a deck board, 1
7 is a bag-like container.

Claims (1)

[Claims] 1. In a dump truck loading box that is tiltably mounted on the vehicle body and has a rear sliding door at the rear, a pair of flat deck plates extending in the longitudinal direction of the loading box are installed at both lateral corners of the loading box. One end is rotatably supported on a shaft, and a flexible bag-shaped container having approximately the same shape as the shipping box and having an input port at the top is provided inside the shipping box, and a part of the bag-shaped container is connected to a deck board and A discharge chute is fixed to the bottom plate of the cargo box and can extend out of the cargo box from the outlet at the rear of the floor plate of the bag-like container at the rear lower part of the bag-like container. A loading box for loading foreign materials on a dump truck, in which the bag-shaped container is extended and the deck plate is rotated downward so that the bag-shaped container is stored below the deck plate, and the deck plate forms the floor surface of the cargo box. .