JPH08244652A - Floor construction of loading platform for dump truck - Google Patents

Abstract

PURPOSE: To lower the height, lighten the weight, simplify the manufacturing operation and increase the strength. CONSTITUTION: There is provided a longitudinal sleeper 1 made of an extrusion molding aluminum material with U-shaped cross section having a pair of vertical walls 2 opposed to each other and the horizontal wall 3 interconnecting the lower ends of both vertical walls 2. There are provided lateral sleepers 4, 5 made of an extrusion molding aluminum with U-shaped cross section having a pair of vertical walls 6, 7 opposed to each other and horizontal walls 8, 9 interconnecting the lower ends of both vertical walls 6, 7. Horizontal reinforcing walls 11, 12 interconnecting both vertical walls 2 are formed integrally with both vertical walls 2 above the horizontal wall 3 between both vertical walls 2 of the longitudinal sleeper 1. The upper portion of the horizontal wall 3 between both vertical walls 2 of the longitudinal sleeper 1 has horizontal reinforcing walls 11, 12 interconnecting both vertical walls 2 and formed integrally with both vertical walls 2. The height of the upper portion higher than reinforcing walls 11, 12 is equalized to the height of the lateral sleepers 4, 5. Both vertical walls 2 of the longitudinal sleeper 1 are respectively formed with notches 13, 14 for fitting the lateral sleeper from the upper end. The lateral sleepers 4, 5 are connected with the longitudinal sleeper 1 while the lateral sleepers 4, 5 are fitted in the notches 13, 14 and supported by the reinforcing walls 11, 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor mount for a dump truck bed.

In this specification, the term "aluminum" includes aluminum alloy in addition to pure aluminum.

[0003]

2. Description of the Related Art Conventionally, as a floor assembly of a dump truck bed, as shown in FIG. 5, steel having a U-shaped cross section supported by a chassis frame (not shown). Vertical joist (30) and a plurality of U-shaped steel horizontal joists placed on the vertical joist (30) at intervals.
The one composed of (31) and the floorboard (32) stretched on the horizontal joist (31) was used (see Jitsukaihei 3-28081).

However, the conventional floor assembly has a problem that the height in the vertical direction becomes large. Moreover,
Since the vertical joist (30) and the horizontal joist (31) are made of steel, there is a problem that the weight becomes large.

Therefore, a floor structure as shown in FIG. 6 has been considered. This floor structure is made of steel vertical joist (3
5) and a steel horizontal joist (36) having a U-shaped cross section. A notch (38) having a height equal to the height of the horizontal joist (36) is formed from the upper end of the vertical walls (37) facing each other of the vertical joist (35), and the lateral joist (36) has the notch (38). It is welded to the vertical joist (35) while it is fitted inside. Also, at the position displaced from the notch (38) in the length direction of the vertical joist (35), the vertical joist (3
A plurality of rectangular vertical reinforcing plates (39) are fitted in 5),
The lower edge and both side edges of the reinforcing plate (39) are welded to the vertical joist (35). The reinforcing plate (39) is for improving the rigidity of the vertical joist (35) against bending.

However, even in the floor assembly shown in FIG. 6, since the vertical joists (35) and lateral joists (36) are made of steel, there is a problem that the weight becomes large. In addition, a reinforcing plate (39) is attached to the vertical joist.
There is a problem that the work of welding to (35) is troublesome, and eventually the work of manufacturing the floor assembly is troublesome.

An object of the present invention is to provide a floor mount for a dump truck bed that solves the above problems all at once.

[0008]

According to the floor assembly of a dump truck bed according to the present invention, a pair of vertical walls facing each other and a horizontal wall integrally formed with both vertical walls and connecting lower parts of the vertical walls to each other are provided. A vertical joist made of aluminum extruded profile, and a horizontal joist made of aluminum extruded profile having a pair of vertical walls which are also opposed to each other and a horizontal wall integrally formed with both vertical walls and connecting lower parts of both vertical walls. The horizontal reinforcing wall connecting both vertical walls is formed integrally with both vertical walls in the portion above the horizontal wall between both vertical walls of the vertical joist. The height of the part above the reinforcing wall is made equal to the height of the horizontal joist, and the vertical joist vertical walls are formed with notches for lateral joist fitting from their upper ends, and the horizontal joist fits in this notch. Encased and supported by a reinforced wall And those that are joined to the vertical joists state.

In the floor assembly of the dump truck carrier, the vertical joist and the horizontal joist may have a U-shaped cross section by the vertical wall and the horizontal wall, respectively.

[0010]

In the floor assembly of the dump truck carrier according to the present invention, since the vertical joists and the horizontal joists are made of aluminum extruded shape members, the weight can be reduced as compared with the conventional longitudinal joists and horizontal joists made of steel. Further, the height of the portion above the reinforcing wall in both vertical wall of the vertical joist is equal to the height of the horizontal joist, and the vertical joist vertical walls are formed with notches for lateral joist fitting from their upper ends, Since the horizontal joists are fitted in the notches, the height of the floor assembly is lower than that of the conventional one shown in FIG. In addition, since the horizontal reinforcing wall that connects the vertical walls is integrally formed with the both vertical walls in a portion above the horizontal wall between the vertical walls of the vertical joist, the rigidity against bending is improved. Moreover, since the lateral joists are supported by the vertical joist reinforcing wall, the supporting force for the lateral joists increases. Further, since the vertical joists are made of aluminum extruded profile, the reinforcing wall can be formed simultaneously with the vertical wall and the horizontal wall.

When the vertical joist and the horizontal joist are U-shaped in cross section by the vertical wall and the horizontal wall, respectively, it is possible to reduce the weight of the floor assembly while ensuring necessary strength and rigidity.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a floor assembly of a dump truck bed according to the present invention.

In FIG. 1, the floor assembly of the dump truck bed is composed of a pair of vertical walls (2) facing each other and both vertical walls.
(1) which is also integrally formed with (2) and has a vertical joist (1) made of aluminum extruded section with a U-shaped cross section and having a horizontal wall (3) connecting the lower ends of both vertical walls (2). A pair of vertical walls (6) (7) and horizontal walls (8) (9) that are integrally formed with both vertical walls (6) (7) and that connect the lower ends of both vertical walls (6) (7). It is provided with two types of lateral joists (4) and (5) made of extruded aluminum U-shaped cross sections having different heights.

Between the vertical wall (2) of the vertical joist (1), both vertical walls
A plurality of, for example, two horizontal reinforcing walls that connect (2) (11)
(12) is formed integrally with both vertical walls (2) with a vertical spacing. The height of the upper part of the vertical walls (2) of the vertical joist (1) above the upper reinforcing wall (11) is made equal to the height of the first lateral joist (4) having a low height. The height of both vertical walls (2) of the vertical joist (1) above the lower reinforcing wall (12) is made equal to the height of the second tall joist (5). . First for horizontal joist fitting that can reach the upper reinforcing wall (11) from the upper end to the opposite parts of both vertical walls (2) of the vertical joist (1) and to which the first lateral joist (4) can be fitted. The notch (13) is formed. The first notch (13) is different from the vertical joist (1) at a position displaced in the longitudinal direction.
A second horizontal joist for fitting a second horizontal joist (5) that can reach the lower reinforcing wall (12) and the second lateral joist (5) can be inserted into the opposite parts of both vertical walls (2) of (1). A notch (14) is formed. The lower end of the first notch (13) coincides with the upper surface of the upper reinforcing wall (11), and the lower end of the second notch (14) coincides with the upper surface of the lower reinforcing wall (12). The first lateral joists (4) are fitted in the first notches (13) and the second lateral joists (5) are fitted in the second notches (14), respectively, and the reinforcing walls (11) (12) are inserted. It is joined to the vertical joist (1) by welding, brazing, etc. while being supported by.

FIG. 2 shows another embodiment of the floor assembly of the dump truck bed according to the present invention.

In FIG. 2, a vertical joist (20) made of extruded aluminum and lateral joists (21) (22) made of extruded aluminum are shown.
The upper ends of both vertical walls (2) (6) (7) are connected by horizontal walls (23) (24) (25) integrally formed with the vertical walls (2) (6) (7). Has been done. The other structure is the same as that of the embodiment shown in FIG. 1, and the same portions and the same members are designated by the same reference numerals and the description thereof will be omitted.

In the above, in the case of the embodiment shown in FIG.
As compared with the case of the embodiment shown in FIG. 2, the weight can be reduced without substantially lowering the bending strength of the vertical joists and the strength of the lateral joists.

3 and 4 show another embodiment of the floor assembly of the dump truck bed according to the present invention.

In FIG. 3 and FIG. 4, between the vertical walls (2) of the vertical joist (1) made of an aluminum extruded profile having a U-shaped cross section,
A plurality of, for example two reinforcing walls (2
6) (27) is formed integrally with both vertical walls (2) with a vertical gap. Each reinforcing wall (26) (27) is a horizontal part (26a) (27a)
And the slanted portion (26b) (27
b) consists of. The height of the upper part of the vertical wall (2) of the vertical joist (1) above the horizontal part (26a) of the upper reinforcing wall (26) is the height of the first horizontal joist (4) having a low height. Is equal to. Reinforcement wall on the lower side of both vertical walls (2) of vertical joist (1)
The height of the portion above the horizontal portion (27a) of (27) is made equal to the height of the second horizontal joist (5) having a high height. The lower end of the first notch (13) for lateral joist fitting formed at the opposite portions of both vertical walls (2) of the vertical joist (1) has an upper reinforcing wall (26).
Is located below the upper surface of the horizontal portion (26a) and above the lower end of the inclined portion (26b). Vertical joists (1) on both vertical walls
2nd for horizontal joist fitting formed on the opposite parts of (2)
The lower end of the notch (14) is located below the upper surface of the horizontal portion (27a) of the lower reinforcing wall (27) and above the lower end of the inclined portion (27b). And the first horizontal joist (4) is the first notch (13)
The second horizontal joists (5) are fitted in the second notches (14) and are supported by the horizontal portions (26a) (27a) of the reinforcing walls (26) (27). It is joined to (1) by welding, brazing, etc.

In the case of the embodiment shown in FIG. 1, the notch (13)
When forming (14), the lower ends of the notches (13) and (14) and the reinforcing wall (1
1) The work of matching the height position with the upper surface of (12) is troublesome, but in the case of the embodiment shown in FIG. 3 and FIG.
(13) It is not necessary to match the height positions of the lower end of the (14) and the upper surfaces of the horizontal portions (26a) and (27a) of the reinforcing walls (26) and (27).
3) The work of forming (14) is simplified. Further, in the case of the embodiment shown in FIG. 1, cracks may occur from the surface forming the lower ends of the notches (13) and (14) in the vertical wall (2) to the reinforcing walls (11) and (12). However, in the case of the embodiment shown in FIGS. 3 and 4, there is no such concern.

The other structure is the same as that of the embodiment shown in FIG. 1, and the same portions and the same members are designated by the same reference numerals and the description thereof will be omitted.

[0023]

As described above, according to the floor assembly of the dump truck bed of the present invention, the weight can be reduced as compared with the conventional vertical joists and lateral joists made of steel. In addition, the height of the upper part of the vertical joist vertical wall above the reinforcing wall is made equal to the height of the lateral joist, and the vertical joist vertical walls are fitted with lateral joist fitting cuts from their upper ends to the reinforcing wall. Since the notch is formed and the lateral joist is fitted in the notch, the height of the floor assembly becomes lower than that of the conventional one shown in FIG. In addition, since the horizontal reinforcing wall that connects the vertical walls is integrally formed with the vertical walls in the portion above the horizontal wall between the vertical walls of the vertical joist, the rigidity against bending is improved, and Since the lateral joists are supported by the reinforcing wall of the vertical joists, the supporting force for the lateral joists increases. Therefore, the strength of the entire floor assembly is increased. Further, since the vertical joists are made of aluminum extruded profile, the reinforcing wall can be formed simultaneously with the vertical wall and the horizontal wall. Therefore, the manufacturing work is simplified as compared with the conventional floor assembly shown in FIG.

If the vertical joist and the horizontal joist are U-shaped in cross section by the vertical wall and the horizontal wall, respectively, it is possible to reduce the weight of the floor assembly while ensuring necessary strength and rigidity.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an embodiment of a floor assembly of a dump truck carrier according to the present invention.

FIG. 2 is a partial perspective view showing another embodiment of the floor assembly of the dump truck bed according to the present invention.

FIG. 3 is a partial perspective view showing still another embodiment of the floor assembly of the dump truck bed according to the present invention.

FIG. 4 is a partially enlarged sectional view of FIG.

FIG. 5 is a partially cutaway perspective view showing an overall configuration of a conventional dump truck loading platform including a floor assembly.

FIG. 6 is a partial perspective view showing another conventional floor assembly of a dump truck bed.

[Explanation of symbols]

 (1) Vertical joist (2) Vertical wall (3) Horizontal wall (4) 1st horizontal joist (5) 2nd lateral joist (6) Vertical wall (7) Vertical wall (8) Horizontal wall (9) Horizontal wall ( 11) Reinforcing wall (12) Reinforcing wall (13) First notch for lateral joist fitting (14) Second notch for lateral joist fitting (26) Reinforcing wall (27) Reinforcing wall

Claims (2)

[Claims] 1. A vertical joist made of an aluminum extruded profile having a pair of vertical walls facing each other and a horizontal wall integrally formed with the vertical walls and connecting lower parts of the vertical walls to each other. A horizontal wall between the vertical walls of the vertical joist and a pair of vertical walls and a horizontal joist made of aluminum extruded profile having a horizontal wall integrally formed with the vertical walls and connecting the lower parts of the both vertical walls. A horizontal reinforcing wall that connects both vertical walls is formed integrally with both vertical walls in the upper part above, and the height of the part above the reinforcing wall in both vertical walls of the vertical joist is the height of the horizontal joist. Equal to each other, cutouts for horizontal joist fitting are formed on both vertical walls of the vertical joist from its upper end, and the horizontal joists are fitted into these notches and joined to the vertical joist while being supported by the reinforcing wall. The floor structure of the loading platform for the dump truck. 2. The floor assembly of a dump truck bed according to claim 1, wherein the vertical joists and the horizontal joists are U-shaped in cross section by a vertical wall and a horizontal wall, respectively.