JPH0858982A - Crosstie - Google Patents

Abstract

PURPOSE: To provide a crosstie which can be used semipermanently having durability by lightening weight and facilitating handling, by forming the inside into a hollow cavity prism of an aluminum alloy, and mounting a slip lock member having elasticity in at least opposed two surfaces of the prism. CONSTITUTION: A cross tie is formed of a prism 2 with the hollow cavity inside formed of aluminum alloy, to provide inside the prism 2 a crossed reinforcing rib 3. In both side parts of each side surface of the prism 2, a liner groove 4, extended parallelly to a lengthwise direction respectively of the prism 2, is formed to removably fit a slip lock member 5 to the prism liner groove 4. The slip lock member 5 is mounted by fitting its one protrusive part 5a into the inside of the liner groove 4, and in a mounting condition, the other protrusive part 5b is protruded from each side surface of the prism 2, to perform slip lock shock absorbing action. In a cover plate 6, a plurality of legs 7 are protrusively provided in a back surface side, and when the cover plate 6 is mounted on an end part of the prism 2, each leg 7 is brought into contact with a protrusion 8, provided in an internal surface of the prism 2, and deformed to fix movement by the restoring force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeper used for supporting loads such as trucks.

[0002]

2. Description of the Related Art In the transportation of cargo by truck, as shown in FIG. 7, a cargo 11 is received on a sleeper 1 arranged on a bed of a truck, and a clearance 12 produced by the sleeper 1 is received.
The cargo 11 is loaded and unloaded using a forklift or the like.

A conventional sleeper is made of wooden lumber and is usually used by cutting a thick lumber of about 10 cm square to fit the entire length of a truck carrier.

[0004]

However, since the high-density wood having a large specific gravity is used for the above-mentioned wooden sleepers as described above, the weight of the wooden sleepers is large, and the wooden sleepers are large in handling. There was a problem that required labor.

In particular, when the sleepers absorb water due to rain or the like, the weight of the sleepers becomes extremely large, which makes the handling even more inconvenient, and the weight of the sleepers limits the load weight of the truck.

Further, when the sleepers get wet due to rain or the like, the surface of the wood becomes extremely slippery, the handling is poor, and the load is likely to shift.

[0007] In addition, the wooden sleepers have a drawback that they have poor durability because they are rotted by wind and rain or deformed and damaged when a large weight is applied.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a sleeper that is lightweight, easy to handle, and semi-permanently used in terms of durability.

[0009]

In order to solve the above problems, according to the sleeper of the present invention, a prism having a hollow inside is formed of an aluminum alloy, and at least two prisms facing each other are provided.
An elastic anti-slip member was attached to the surface.

Further, according to the second means of the present invention, liner grooves extending in the longitudinal direction of the prism are formed on both sides of the two surfaces of the prism which are opposed to each other, and the slip preventing member is detachably attached to the liner groove. It was possible to insert it.

[0011]

As described above, the weight of the sleeper itself can be remarkably reduced by forming the hollow prism with the aluminum alloy having a small specific gravity. Such an aluminum alloy has a mechanical strength such as a compressive strength that is several steps higher than that of wood, and even if the shape of a hollow prism is equal to or more than that of a wooden sleeper.

Further, by loading the load with the two sides of the prism having the anti-slip member attached thereto facing upward and downward, it is possible to prevent the load from slipping and to reduce the impact applied to the sleepers.

On the other hand, when the anti-slip member can be freely attached to and detached from the liner groove provided in the prism as in the second means,
Since the anti-slip member can be freely replaced even when it is worn or damaged, the sleeper can be repeatedly used over a long period of time.

[0014]

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

1 to 4 show a first embodiment. The sleeper 1 is composed of a hollow prism 2 formed of an aluminum alloy and having a hollow inside, and a cross-shaped reinforcing rib 3 is provided inside the prism 2.

Such a prism 2 is mass-produced by extruding or drawing an aluminum ingot.
The side wall and the wall thickness of the rib 3 are determined in consideration of the weight of the load in truck transportation or the like.

Liner grooves 4 extending parallel to the longitudinal direction of the prism 2 are formed on both sides of each side surface of the prism 2, and a slip preventing member 5 is detachably fitted in each liner groove 4. It is supposed to be crowded.

The liner groove 4 has a dovetail-shaped cross section and is formed over the entire length of the prism 2.

The anti-slip member 5 is made of a material having elasticity and great abrasion resistance, such as rubber or elastomer, and is formed by molding the material into an H-shaped cross section.
A long strip-shaped product is cut into the length of the prism 2 for use. The slip stopper 5 is attached by fitting one of the protrusions 5a in the interior of the liner groove 4, protrudes from the other projecting portion 5 _b in a state where the attached each side of the prism 2, cushioning and non-slip Demonstrate.

A lid plate 6 made of a flexible material such as synthetic resin is detachably attached to the end of the prism 2.

The lid plate 6 has a plurality of legs 7 projecting from the back side. When the lid plate 6 is attached to the end of the prism 2 as shown in FIG. 4, each leg 7 is provided on the inner surface of the prism 2. The protrusion 8 comes into contact with and deforms, and its restoring force fixes the movement. The shape of the cover plate 6 is formed to have a size that covers the entire end surface of the prism 2 to prevent rainwater, earth and sand, etc. from entering the inside of the prism 2, and prevent the anti-slip member 5 from slipping out of the liner groove 4. There is a function.

The sleeper 1 of the embodiment has the above-mentioned structure. As shown in FIG. 3, the slip preventing member 5 is fitted into each liner groove 4 of the prism 2 and the cover plate 6 is attached to the end of the prism 2. To use.

This sleeper 1 has a hollow inside and is made of an aluminum alloy having a small specific gravity.
It is significantly lighter than conventional sleepers made of wooden lumber and can be handled easily.

Further, since the aluminum alloy does not absorb water, the weight of the sleeper does not change even if it rains, and since it is resistant to corrosion, it can be used stably for a long period of time.

Furthermore, since the anti-slip members 5 attached to the respective side surfaces of the prism 2 exert anti-slip and cushioning effects, it is possible to prevent the slip of the load, reduce the impact on the sleepers, and prevent the damage. .

FIG. 5 shows a second embodiment. In this example,
A non-slip member 5'is formed in such a size as to extend over the two liner grooves 4 and 4, and each anti-slip member 5'provides a prism 2
Most of the sides of each are covered.

On the other hand, in the third embodiment shown in FIG. 6, the liner grooves 4 and 4 are formed only on the two opposing surfaces of the prism 2, and the non-slip members 5 "are spread over the liner grooves 4 and 4 on both sides. And is formed in a size that covers the entire side surface of the prism 2.

As in the second and third embodiments, the side surfaces of the prism 2 are widely covered by the antiskids 5 ', 5 "to make the antiskid effect more reliable and increase the shock absorbing effect on the sleeper. be able to.

In each of the above embodiments, the anti-slip member or the cover plate is fitted into the prism so that the prism can be attached and detached. However, the prism may be attached by an adhesive or a bolt.

Further, a reinforcing rib 3 provided inside the prism 2.
The shape of is arbitrary and may not be provided.

[0031]

[Effect] As described above, the sleeper of the present invention is made of aluminum alloy prisms, is lightweight and does not corrode or absorb water, so that it can be easily handled and can be used stably for a long period of time.

Further, since the non-slip member having elasticity exerts a non-slip effect on the surface of the sleeper and a cushioning effect, it is possible to stably support the load and prevent damage to the sleeper.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a sleeper according to a first embodiment.

FIG. 2 is a perspective view showing a mounted state of the above-mentioned non-slip agent.

FIG. 3 is a perspective view showing a usage state of the same.

FIG. 4 is a partially longitudinal side view showing a state in which the lid plate is mounted on the same.

FIG. 5 is a vertical sectional view showing a second embodiment.

FIG. 6 is a vertical sectional view showing a third embodiment.

FIG. 7 is a diagram showing a use state of sleepers.

[Explanation of symbols]

 1 sleepers 2 prisms 3 ribs 4 liner grooves 5, 5 ', 5 "non-slip members 6 cover plates 7 legs 8 protrusions

Claims (2)

[Claims] 1. A sleeper made of aluminum alloy to form a hollow prism having a hollow interior, and at least two opposing surfaces of the prism are fitted with elastic anti-slip members. 2. A liner groove extending in the length direction of the prism is formed on both sides of the two surfaces of the prism that face each other, and a non-slip member is detachably fitted in the liner groove. The listed sleepers.