This application is a National Stage of PCT/CN2018/078678, filed Mar. 12, 2018, all of which is incorporated herein by reference in its entirety.
The present invention relates to the field of logistics and warehousing technology, and in particular to a shelf that can be applied in the logistics and warehousing industries.
At present, common shelves are iron shelves, but iron shelves are generally heavy and difficult to move and handle. Moreover, the disassembly and assembly of such iron shelves is time consuming and laborious, and the iron shelves are prone to corrosion and rust. On the other hand, methods for processing a cross beam and a column face of an iron shelf body may be classified into two types. The first processing method is to form the cross beam and the column face by bending the entire plate through multiple procedures. The second processing method is to weld a plurality of plates to form the cross beam and the column face. However, with these two processing methods, there is a problem of stress concentration at both a bending portion and a welding point of the plate, which affects the service life of the plate and even of the shelf. Furthermore, for a bending piece, its shape cannot be too complicated due to process limitations, and its wall thickness, transition fillet, etc. are also greatly affected by process limitations; moreover, the plate of the bending piece is generally of equal thickness. Therefore, for the bending piece, a locally thickened feature cannot be formed thereon, and thus targeted thickness processing cannot be performed thereon on the basis of the force to which it is actually subjected.
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a shelf that is lightweight, resistant to rust and corrosion, easy to disassemble and assemble, and free of stress concentration problem.
To achieve the above object, the present invention provides a shelf that comprises a plurality of cross beams, a plurality of support portions, and at least one rest portion. Each of the cross beams is connected to a corresponding support portion by a connector, and a side face of each of the cross beams has a rest face for placement of a corresponding rest portion. At least two opposite ends of the rest portion are arranged on rest faces, in the same plane, of at least two corresponding cross beams. The plurality of cross beams and the plurality of support portions are profiles formed by die extrusion-stretching.
Preferably, the profile is an aluminum alloy profile, a magnesium alloy profile, an aluminum-magnesium alloy profile, or a titanium alloy profile.
Preferably, the contact face where the cross beam contacts with the support portion, the bending portion of the profile, the fillet of the profile, or the place where the profile is subjected to stress are thickened so that the mechanical strength and bending resistance of the profile are improved.
Preferably, the cross beam has a recessed structure, of which the cross-sectional shape comprises an “L” shape, an “inverted T” shape, or a “cross” shape.
Preferably, a bottom face of the rest face of the cross beam is connected with a first support face and a second support face; and the first support face and the second support face intersect to form a “y” shape.
Preferably, the side face of the cross beam is further provided with a reinforcing plate fixation face below the rest face; a bottom face of the rest face is connected with a first arc-shaped face and a second arc-shaped face above the reinforcing plate fixation face; and the first arc-shaped face and the second arc-shaped face intersect to form a “y” shape.
Preferably, the connector comprises a pin, a bolt, or a rivet.
Preferably, the support portion is provided with a plurality of through-holes; when the support portion is normally upright, each of the through-holes is formed by connecting one large hole and one small hole from up to down; the two ends of each of the cross beams are connected and fixed to the connector through connection holes; and the diameter of a head of the connector is smaller than the diameter of the large hole of the through-hole, but larger than the diameter of the small hole of the through-hole.
Preferably, the rest portion is a rectangular object made of a wooden plate, an iron plate, a wire mesh, or a plastic.
Preferably, a reinforcing plate perpendicular to the cross beams is provided between at least two opposite cross beams; and the reinforcing plate is connected and fixed to the cross beam by pins or bolts.
The concepts, specific structures, and resulting technical effects of the present invention will be further described below with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Hereinafter, a plurality of preferred embodiments of the present invention will be described with reference to the accompanying drawings of the specification to make its technical content more clear and easy to understand. The present invention may be embodied by many different forms of embodiments, and the scope of the present invention is not only limited to the embodiments mentioned herein.
In the accompanying drawings, components having the same structure are denoted by the same reference numeral, and assemblies having similar structures or functions in various places are denoted by similar reference numerals. The size and thickness of each assembly shown in the accompanying drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each assembly. To make the illustration more clear, the thickness of the component is properly exaggerated at some places of the accompanying drawings.
As shown in
In order to enable the connection and fixation between the support portion 1 and the cross beam 2, in the implementation modes shown in
In order to place the rest portion 3 in the shelf, as shown in
Furthermore, as shown in
In addition, in the shelves shown in
Next, the support portion 1 and the cross beam 2 employed in the shelf according to the present invention will be further described with reference to the accompanying drawings.
As shown in
As shown in
As shown in
Moreover, the inventor also noticed that when the cross beam has a recessed structure and the cross-sectional shape of the recessed structure comprises an “L” shape, an “inverted T” shape, or a “cross” shape, a better technical effect may be obtained.
The profile that may be used as the support portion 1 and the cross beam 2 is preferably an aluminum alloy profile. In other implementation modes, the profile that may be used as the support portion 1 and the cross beam 2 may also be a magnesium alloy profile, an aluminum-magnesium alloy profile, even a titanium alloy profile, and so on.
As a result of the use of a profile to manufacture of the support portion 1 and the cross beam 2, thickening processing may be performed at the contact face where the cross beam 2 contacts with the support portion 1, at the bending portion of the profile, at the fillet of the profile, or at the place where the profile is subjected to stress, so that the mechanical strength and bending resistance of the profile and thus of the shelf are improved.
In a preferred implementation mode, an aluminum alloy profile may also be selected to form the reinforcing plate 4 to reduce the overall weight of the shelf and facilitate mobility.
It can be seen from the above description that the following beneficial effects may be obtained by adopting the technical solutions of the present invention: 1. the weight of the shelf is obviously reduced as compared with the traditional shelf; 2. the shelf is easy to assemble and disassemble, and has less tendency to corrode and rust; 3. the shelf is free of stress concentration problem existing in the traditional shelf caused by the bending or welding process, so its service life can be significantly improved; 4. the profile employed in the shelf has good consistency, and has various forms.
The preferred specific embodiments of the present invention has been described in detail above. It should be understood that many modifications and variations may be made by those of ordinary skill in the art according to the concepts of the invention without the exercise of inventive faculty. Therefore, any technical solutions that may be obtained by those skilled in the art by way of logical analysis, reasoning or limited experiments on the basis of the prior art and according to the concepts of the present invention should fall within the scope defined by the claims.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2018/078678 | 3/12/2018 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2019/173935 | 9/19/2019 | WO | A |
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