JPS6123497Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of a vehicle used in dump trucks, bulk cars, freight cars, etc.

The conventional structure of this type of vessel is as shown in Fig. 1, for example, in which a corner part a and a top frame b, which are made by bending a thick plate, are joined by welding to a wall part c and a bottom part d to form a container. e, bending channel steel f along its outer surface, and welding the entire circumference along the contact areas of each member.As a result of this structure, the following drawbacks are found: It has been pointed out.
In other words, there are many assembly steps, which takes time (bending, welding of curved surfaces).

Skilled workers are required for sheet bending and welding.

Processing costs are higher than material costs.

If it is made of steel, it will be heavy.

This invention eliminates all the drawbacks of the conventional structure as described above and achieves independent practical effects, and will be described in detail below with reference to embodiments shown in the drawings.

In FIG. 2, which shows an example in which this invention is applied to a dump truck bed cell, each rail material 2 of the upper rail, middle rail, and corner rail constituting the wall body 1,
3, 4 and the reinforcing beam 5 are made of extruded aluminum alloy, and the bottom plate 6 is made of a thick plate of aluminum alloy.

The respective rail materials 2, 3, and 4 are vertically joined to form the wall 1, and the upper rail 2 and the middle rail 3 are joined by overlapping joints, and at the outside of the overlapping joints. An overlap (fillet) weld 7 is formed, and a V-shaped groove 8 for butt welding is formed inside. In this case, in order to make the inner surface of the wall 1 flush, the overlapping portion 2' of the outer rail material 2, for example, one of the rail materials 2, has a rectangular portion 2a forming one of the overlapping welded portions 7 at the lower end. It is a thin and recessed portion having a tip (i.e., lower end in this case) at the tip (that is, the bottom end in this case), and at the border with the rail board at the upper end of this overlapping portion 2', there is an inclined stepped portion 2 forming one of the groove portions 8. The overlapped portion of the other rail material 3 that overlaps the overlapped portion 2' is a dimension adjustment piece 3' for adjusting the depth of the vessel, and the groove portion 8 is provided at its upper end. It has an inclined surface 3'' symmetrical to the inclined stepped portion 2'' to form the other side of the inclined step 2'', and the inner surface thereof, that is, the surface constituting the inner wall surface of the vessel, is provided with strips 9 at appropriate intervals (approximately 10 mm units). is engraved to serve as an index when cutting the size adjustment piece 3' to the size to be adjusted.

Note that one end of the rail material 4 constituting the corner rail has a groove 4' having a V-shaped groove 10 on the inside.
is formed, and one end of the reinforcing beam 5 is supported in this shaped groove 4'. In addition, the rail material 3 and the rail material 4 have a protrusion 11 and a groove 12 that rotatably fit each other on the outer edge of the joint, and a groove 13 for butt welding similar to the above is formed on the inner edge. After the above-mentioned fitting, they are connected by welding. Furthermore, in order to achieve economical strength suitable for the load distribution of the cargo,
The thickness of each rail material is configured to become thinner as it goes above the thickness of the bottom plate 6.

The assembly order of the wall structure of this invention having the above configuration is as follows.

First, the reinforcing beam 5 is temporarily assembled on the rail material 4 as a corner rail, the bottom plate 6 is placed on it, and both members are welded from the inside of the bessel at the groove portion 10. Then, the rail material 3 is placed on the rail material 4. They are joined by rotational fitting at the outer edge and welding at the welding groove 13 at the inner edge. Next, after welding the rail material 2 and the rail material 3 at the two inner and outer welding parts 7 and 8, the inner welded part is finished flat.

As a result of adopting the wall structure of this invention as explained above, the following functions and effects can be obtained. In other words, (1) The length of the weld is reduced to about 1/3, and the weld and weld groove have good dimensional accuracy, so continuous automatic welding in a straight line can be easily adopted as the welding method, reducing assembly man-hours. Reduced.

(2) Each rail material has a monolithic structure, so it has high mechanical strength.

(3) Vertical deviation between the inside and outside at the joint 2
Since welds are formed at fixed locations and there are overlapping parts, it has high rigidity and is less prone to distortion or warping even during welding.

(4) The required thickness of the inner wall can be appropriately designed according to the load distribution of the cargo.

(5) The required height of the betu cell can be easily determined by cutting down the dimension adjustment piece according to the strip that serves as an index.

(6) Processing costs can be reduced by reducing assembly man-hours and saving materials.

(7) By using aluminum alloy as the material, the weight of the Vetsu cell can be reduced by almost half compared to conventional products, which increases the loading capacity, and also reduces the weight of the vehicle itself, so it can be used even when there is no load. This reduces power consumption and contributes to energy conservation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of a conventional structure, and FIG. 2 is a sectional view of a main part of an embodiment of this invention. In the figure, 1... wall, 2, 3, 4...
Rail material, 2″... Inclined step, 5... Reinforcement beam, 6
. . . Bottom plate, 7. Overlap welded portion, 8.

Claims (1)

[Claims for Utility Model Registration] 1. In a wall constructed by joining a plurality of rail materials made of extruded aluminum sections vertically in several stages, the overlapping portion of one of the rail materials is made thin, and the thin wall portion The tip of the rail material is a square portion, and an inclined stepped portion is formed at the border of this thin portion with the rail board, and an inclined surface symmetrical to the inclined stepped portion is also formed at the tip of the overlapping portion of the other rail material. They are formed integrally, the two rail materials are overlapped at the overlapping portion, and overlap welding is performed between the square portion of one rail material and the substrate of the other rail material, and the slope of one rail material is A wall structure of a transportation vessel in which both rail materials are joined by butt welding a V-shaped groove formed between a step and an inclined surface at the tip of the other rail material. 2. Transportation according to claim 1 of the utility model registration claim, in which the overlapping portion of the other rail material in the overlapping portion of the rail material is used as a dimension adjustment piece and strips serving as cutting indicators are carved at appropriate intervals. The wall structure of Bethusel. 3. The wall structure of a transportation vessel according to claim 1, wherein the rail material is constructed such that the thickness of the rail material becomes thinner as it goes higher.