JP3004349U - Sleepers for carrying heavy goods - Google Patents

Abstract

(57) [Abstract] [Purpose] Lightweight, convenient to handle, can be used with double the height, high strength and large load-bearing capacity.
Provide an aluminum sleeper that can be manufactured with good dimensional accuracy. [Structure] A horizontal reinforcing wall (3) made of a hollow extruded material made of a high-strength aluminum alloy, having a rectangular cross section having a width (W) twice as high as the height (H), and having one internal space.
And the three vertical reinforcing walls (4) partition into eight hollow parts (5) each of which has a substantially square shape. Then, a built-up portion (6) having an inner surface of a concave curved surface is provided at an entering corner where the respective molds intersect.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sleeper for transporting heavy objects, for example, an aluminum sleeper used for temporarily placing and supporting the machinery lifted by a jack or the like when relocating large machinery.

[0002]

[Prior art]

 Regarding this type of aluminum sleeper, the present inventor has previously proposed the one described in Japanese Utility Model Publication No. 5-20782. The sleeper according to this prior proposal is made of a high-strength aluminum alloy into a hollow extruded material having a cross-section of a T-shape.

[0003]

[Problems to be solved by the device]

 The above sleepers are extremely suitable because they are lightweight, easy to handle, and have excellent load-bearing capacity, and are being used more and more recently, but when they are used, heavy items are placed at a position higher than their height and width. If you intend to place and support the sleepers, you must align two or three sleepers and use them in a stacked state.

However, when a plurality of sleepers are used in a stacked state, the stability of the sleepers themselves deteriorates, and the number of sleepers to be prepared in advance at the work site increases, which is a labor-intensive task. It was disadvantageous in terms of material cost.

An object of the present invention is to provide an aluminum sleeper which is convenient in practical use and which is advantageous in manufacturing in which the above disadvantages are eliminated.

More specifically, 90 ^. By changing the direction, it can be used by converting it to a normal height and sleepers having a height twice that of the normal height, and at the same time, it has the same level of durability per unit area under any usage condition. It is an object of the present invention to be able to be extruded into a material having a load performance and a high dimensional accuracy without causing distortion in manufacturing.

[0007]

[Means for Solving the Problems]

 For the above-mentioned purpose, the present invention comprises a hollow extruded material made of a high-strength aluminum alloy, in which the peripheral wall is formed in a rectangular shape having a width twice as high as the height, and the center of the height between the left and right side walls is formed. One horizontal reinforcing wall is provided at a position, and three vertical reinforcing walls are provided at equal intervals between the upper and lower walls so as to intersect with the horizontal reinforcing wall in a cross shape, and to the left and right side walls of the peripheral wall. The sleeper for transporting heavy goods is characterized in that a wall and a built-up portion having a concave curved inner surface are formed at respective corners where the horizontal reinforcing wall and the vertical reinforcing wall are orthogonal to each other. And

[0008]

【Example】

 The sleeper (1) of the illustrated embodiment is made of a hollow extruded material made of a high-strength aluminum alloy. The high-strength aluminum alloy used here is Si: 0.20-0. A6000-based Al-Si-Mg-based alloy containing 9 wt% and Mg: 0.40 to 0.9 wt% and the rest being aluminum and impurities is preferable, and especially T5 refining material made of 6N 01 alloy is preferable. Used for.

The sleeper (1) is formed in a laterally long rectangular shape in which the peripheral wall (2) has a width (W 2) twice as high as the height (H) in a cross section. From the viewpoint of versatility, it is preferable that the height (H) is 150 mm and the width (W) is 300 mm. The length (L) is formed to an arbitrary length of, for example, about 1 to 7 m according to the purpose of use.

In the internal space surrounded by the peripheral wall (2), one horizontal reinforcing wall (3) connecting the left and right side walls (2a) (2a) at their height centers and the upper and lower walls ( 2b) and three vertical reinforcing walls (4) connected to each other at equal intervals are provided so as to cross each other in a cross shape. As a result, the inner space of the peripheral wall (2) is divided into eight hollow portions (5) each of which has a substantially square shape.

In addition, the corners where the left and right side walls (2a) (2a) and the upper and lower walls (2b) (2b) of the peripheral wall (2) intersect, and the peripheral wall (2) and the horizontal and vertical reinforcing walls (3). ) (4) is formed at each of the mutually orthogonal corners, that is, at the four corners of each of the hollow portions (5) described above, a built-up portion (6) having a concave curved surface (6a) on the inner surface side is formed. . The concave curved surface (6a) on the inner surface of the built-up portion (6) preferably has a radius (R) of 5 to 10 mm.

As shown in FIG. 1, the above-mentioned sleeper (1) is used for moving a heavy load (A) such as a large machine or lifting and transporting the heavy load (A) for installation. After being lifted from the floor with B) or the like, it is used as a cradle component member that is inserted and installed under the heavy object (A) and supports the heavy object (A) on it. At this time, depending on the distance between the floor surface (G) and the lower surface of the heavy object (A), one or a plurality of them may be stacked in a horizontal position, or they may be flipped 90 degrees to be tall and tall. Use it in the facing posture.

[0013]

[Effect of device]

 Since this invention is made of a hollow extruded material made of a high-strength alloy, it is lightweight and easy to handle, and also has a peripheral wall formed in a rectangular shape having a width twice the height. Therefore, by changing the posture horizontally or vertically, the height can be arbitrarily changed to two heights, that is, the normal height and twice the height. As a result, the number of required sleepers to be prepared at the site can be reduced, which is economically advantageous. Also, in the lateral position, a large bearing area can be obtained, which is useful for stable bearing and good stability can be obtained even when used in a stack of two stages. Even when used in a vertical position, better stability can be obtained compared to the case where two pieces with a Ta-shaped cross section are used in a stack.

In addition, the interior of the peripheral wall is partitioned by one horizontal reinforcing wall and three vertical reinforcing walls, and the inner wall is divided into eight hollow portions each of which has a substantially square shape. Therefore, in any usage posture, it is possible to have substantially uniform and excellent pressure resistance in any part of the outer peripheral surface and to have a large load bearing capacity for loading heavy objects.

Further, as described above, since the reinforcing walls are provided in the uniform partition arrangement, and the built-in portion having the concave surface on the inner surface is provided at the corner portion where the walls are orthogonal to each other, Despite being a large hollow material that is difficult to extrude with high precision, the metal flow during extrusion can be made uniform throughout, resulting in no distortion and flatness and dimensional accuracy of the outer peripheral surface. Can make good sleepers.

[Brief description of drawings]

FIG. 1 is a front view showing a use state of a sleeper according to an embodiment of the present invention.

FIG. 2 is a perspective view of the sleeper.

FIG. 3 is an enlarged view of a part III in FIG.

[Explanation of symbols]

 1 ... Sleepers 2 ... Perimeter wall 2a ... Left and right side walls 2b ... Upper and lower walls 3 ... Horizontal reinforcing wall 4 ... Vertical reinforcing wall 5 ... Hollow part 6 ... Overlay part

Claims (2)

[Scope of utility model registration request] 1. A hollow extruded material made of a high-strength aluminum alloy, the peripheral wall of which is formed in a rectangular shape having a width twice the height in cross section, and one wall is formed between the left and right side walls at a central position of those heights. A horizontal reinforcing wall is provided, and three vertical reinforcing walls are provided at equal intervals between the upper and lower walls so as to intersect with the horizontal reinforcing wall in a cross shape. A sleeper for carrying heavy goods, characterized in that a built-up portion having a concave curved surface on the inner surface is formed at each corner of the reinforcing wall and the vertical reinforcing wall which are orthogonal to each other. 2. The peripheral wall has a height of 150 mm and a width of 300 m.
m, and the inner surface of the built-up portion at the corner is a radius of 5
The sleeper for carrying heavy objects according to claim 1, which is formed into a curved surface of 10 mm.