High-strength metal sleeve for optical cables

A metal sheath, high-strength technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of poor compressive performance, heavy weight, large diameter of optical cable, etc., to achieve enhanced compressive performance, reduced thickness, and reduced overall diameter Effect

Inactive Publication Date: 2011-08-10
张建军
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: because the metal sheaths 4 and 5 are arranged in a circle by high-strength steel wires, the diameter formed is relatively large, resulting in a relatively large diameter and heavy weight of the final formed optical cable, especially the double-layer steel wire metal sheath; and due to the circumferential arrangement There is no connection between the horizontal steel wires, and the compressive performance is not good

Method used

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  • High-strength metal sleeve for optical cables
  • High-strength metal sleeve for optical cables
  • High-strength metal sleeve for optical cables

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Embodiment Construction

[0016] A single strip metal sheet 41 is shaped as Figure 5 , as shown in Figure 6, the embodiment is made of stainless steel, of course it can also be made of other rust-resistant or rust-resistant metal materials. The production process is as follows: first cut the stainless steel sheet or draw it into a narrow strip with steel wire, and then roll it to form a circular arc surface in the transverse direction. The curvature of the arc surface is determined by the required cable specifications; Pressed into a basic "Z" shape by a mold, the height of the formed step matches the thickness of the stainless steel strip 41, and the upper and lower step surfaces 41a and 41b formed are all arc surfaces, so that the horizontal overlap is as close as possible Paste; the formed step bend can play the role of reinforcing ribs, which is beneficial to enhance the compressive strength of the sheath; finally twist it into a spiral shape, and the direction of twist can be left-handed or right...

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Abstract

The invention relates to photo-communication transmission equipment, in particular to a high-strength metal sleeve for optical cables. In the sleeve, a plurality of bar-shaped metal sheets are overlapped transversely to form a circular tube, and each metal sheet is arranged in a spiral form and is made of stainless steel, the section of each metal sheet is pressed into a Z shape basically, and the height of the formed step is matched with the height of the metal sheet. Compared with a sleeve formed by arranging steel wires into a circle, under the condition that the weights of used materials are same, the sleeve has obviously reduced thickness, thus the overall diameter of a cable is reduced, and the manufacture, transportation, construction and maintenance costs of the product are lowered. Since inner and outer cambered surfaces formed by the sleeve of such a structure are a full circle, forces acting on the cable are uniform, and the cable can be better protected; in addition, the metal sheets are overlapped transversely, compression resistance is improved greatly while tensile strength is ensured.

Description

Technical field: [0001] The invention relates to optical communication transmission equipment, which is an improvement to the sheath of the optical cable, and is especially suitable for the manufacture of the submarine optical cable. Background technique: [0002] Optical fiber in optical cable is widely used in information transmission technology as an optical waveguide medium. For submarine optical cables, mechanical properties such as tensile and compressive properties have higher requirements, because once the optical cable breaks, repairs will be very difficult and expensive. Chinese patent 02218752.9 "High-strength steel wire armored submarine optical cable" introduces an improvement scheme, such as figure 1 As shown, it includes an optical fiber 1, a stainless steel loose tube 2, an insulating inner sheath 3, and a metal sheath 4 and 5 composed of two layers of metal armor layers outside the inner sheath, made of high-strength steel wire coated with zinc-aluminum-mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 张建军
Owner 张建军
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