JP3062267U - Sleeper for transporting heavy objects - Google Patents

Abstract

(57) [Summary] [Purpose] Lightweight, convenient for handling, usable in two different heights, and can be manufactured to high strength, large load capacity, and good dimensional accuracy. To provide comfortable aluminum sleepers. [Structure] It is made of a hollow extruded material made of a high-strength aluminum alloy and has a height (H) of 175 mm and a width (W) of 200.
mm, and the inner space is defined by one horizontal reinforcing wall (3) and two vertical reinforcing walls (4) into six hollow portions (5), each of which is almost a square. . A built-up portion (6) having a concave inner surface is provided at a corner where the walls intersect.

Description

[Detailed description of the invention]

[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 a machine lifted by a jack or the like when a large machine is relocated.

[0002]

[Prior art]

 Regarding this type of aluminum sleeper, the present inventors have previously proposed the one described in Japanese Utility Model Publication No. 5-20782. The sleeper according to this prior proposal is formed of a hollow extruded member having a cross section in the shape of a cross-section using a high-strength aluminum alloy.

[0003]

[Problems to be solved by the invention]

 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. If you want to support the car, you must align two or three sleepers and stack them.

However, when a plurality of sleepers are used in a stacked state, the stability of the sleepers themselves becomes poor, and the number of sleepers that must be prepared in advance at the work site increases, resulting in trouble in work, This was disadvantageous in terms of material costs.

[0005] Furthermore, if the bearing height of the heavy object does not correspond to an integral multiple of the height and width of the sleeper, it is difficult to adjust the bearing height of the sleeper, which hinders the work efficiency on site. I often came.

[0006] In view of the above-described problems, the present invention can be used in two forms having different heights, and can be used by stacking or using together with other sleepers. Therefore, the present invention aims to provide a practically convenient aluminum molded sleeper that can conveniently cope with fine adjustment of the height.

[0007] More specifically, by changing the direction by 90 degrees, it can be used in two modes with different heights of 25 mm, and by stacking two pieces, it is possible to use three types of 350 mm, 375 mm, and 400 mm. It can be used in different modes, and can be used at different heights at a pitch of 25 mm by stacking it together with other sleepers, and at the same load capacity per unit area in any use state. It is an object of the present invention to be able to extrude into a product having high performance and high dimensional accuracy without producing distortion in production.

[0008]

[Means for Solving the Problems]

 For the above purpose, this invention consists of a hollow molded material made of a high-strength aluminum alloy, the peripheral wall of which is formed in a rectangular shape with a height of 175 mm and a width of 200 mm in a cross section, between the left and right side walls at a central position of those heights. One horizontal reinforcing wall is provided, and two vertical reinforcing walls are provided at equal intervals between the upper and lower walls so as to cross the horizontal reinforcing wall in a cross shape, and the left and right side walls and the upper and lower walls of the peripheral wall, and The purpose of the present invention is to provide a sleeper for carrying heavy loads, characterized in that a built-up portion having a concave inner surface is formed at each of the corners where the horizontal reinforcing wall and the vertical reinforcing wall are orthogonal to each other.

[0009] Since the sleeper is manufactured as an extruded material by extrusion, it can be manufactured with excellent dimensional accuracy with high efficiency.

In addition, the thickness of the peripheral wall, the horizontal reinforcing wall, and the vertical reinforcing wall is formed to be 4.5 to 5.5 mm, and the inner surface of the corner is formed into a curved surface having a radius of 5 to 10 mm. , While maintaining excellent load-bearing capacity, and relatively lightweight and easy to handle.

[0011]

【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 0.40-0.9 wt% of Mg and the balance of aluminum and impurities is suitable, and T5 tempered material with 6N01 alloy is particularly preferable. Used for

The sleeper (1) has a peripheral wall (2) formed in a horizontally long rectangle having a width (W) of 200 mm and a height (H) of 175 mm in a cross section. 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) and (2a) at the center of their heights, and upper and lower walls (2). 2b) (2b) Two vertical reinforcing walls (4) which are connected 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 six hollow portions (5) each of which has a slightly elongated rectangular shape.

[0015] Furthermore, 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) Overlays (6) having concave surfaces (6a) on the inner surface side are formed at the respective corners of the hollows (5) which are orthogonal to each other, that is, at the four corners of the hollows (5). . The concave curved surface (6a) on the inner surface of the built-up portion (6) is preferably formed to have a radius (R) in a range of 5 to 10 mm, particularly about 8 mm.

As shown in FIG. 1, the sleeper (1) jacks the heavy object (A) when the heavy object (A) such as a large machine is transferred or lifted for installation. After being lifted off the floor by means of B) or the like, it is used as a pedestal component for insertion and installation under the heavy load (A) to carry and support the heavy load (A) thereon. At this time, depending on the distance between the floor surface (G) and the lower surface of the heavy object (A), use one or more of them in a horizontally laid posture, or turn them 90 degrees to make them tall and tall. Use it in the orientation. Alternatively, use two or more of them in a combination of the horizontal position and the vertical position, or use them in combination with other types of sleepers of different dimensions and stack them as necessary. .

The wall thickness of the peripheral wall (2), the horizontal reinforcing wall (3) and the vertical reinforcing wall (4) is formed in a range of 4.5 to 5.5 mm, particularly preferably 5.0 mm. With such a thickness setting, it is possible to secure necessary and sufficient strength in relation to the cross-sectional size of the sleeper (1), and to manufacture and provide a relatively lightweight and inexpensive material with reduced material cost. Can.

[0017]

[Effect of the invention]

 Since this invention is made of a hollow molded material made of a high-strength alloy, it is lightweight and easy to handle, and the peripheral wall is formed in a rectangular shape with a height of 175 mm and a width of 200 mm. By changing the posture in the horizontal or vertical direction, it is possible to arbitrarily convert and use two kinds of heights having different heights of 25 mm. In addition, by stacking and using two of them, it can be used in three aspects of heights of 350 mm, 375 mm, and 400 mm. In addition to the case of single use, it can be used in various types with different bearing heights. It can respond conveniently. Therefore, the work efficiency on site is good.

Further, the inside of the peripheral wall is partitioned by one horizontal reinforcing wall and two vertical reinforcing walls, and each of the inner walls is divided into six hollow portions that are almost square in shape. In any of the use postures, any part of the outer peripheral surface has substantially uniform and excellent pressure-resistant strength, and can have a large load-bearing capacity when a heavy object is loaded.

Furthermore, as described above, each reinforcing wall is provided in an evenly-spaced arrangement, and each wall is provided with a built-up portion having a concave inner surface at the corner where the wall is orthogonal. Despite being a hollow material that is inherently difficult to extrude with high precision, it is possible to make the metal flow during extrusion molding uniform throughout, and to create a sleeper that is free of distortion and has good outer surface flatness and dimensional accuracy. Can be manufactured.

[Brief description of the 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. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sleeper 2 ... Perimeter wall 2a ... Right and left side wall 2b ... Upper and lower wall 3 ... Horizontal reinforcement wall 4 ... Vertical reinforcement wall 5 ... Hollow part 6 ... Overlay part

Claims (3)

[Utility model registration claims] 1. A hollow molding made of a high-strength aluminum alloy, having a peripheral wall having a height of 175 mm and a width of 2 in a cross section.
One horizontal reinforcing wall is provided between the left and right side walls at the center of their height, and two vertical reinforcing walls are formed at equal intervals between the upper and lower walls with the horizontal reinforcing wall and the cross shape. Are formed on the left and right side walls and the upper and lower walls of the peripheral wall, and at each of the corners where the horizontal reinforcing wall and the vertical reinforcing wall intersect at right angles with each other. A sleeper for transporting heavy objects, characterized in that it is made. 2. The sleeper according to claim 1, comprising a hollow extruded material. 3. The peripheral wall, the horizontal reinforcing wall, and the vertical reinforcing wall are formed to have a thickness of 4.5 to 5.5 mm, and the inner surface of the corner is formed as a curved surface having a radius of 5 to 10 mm. Or the sleeper for carrying heavy objects according to 2.