Self-supporting aerial optical cable capable of being identified through night vision

Abstract

The invention relates to the technical field of cables and in particular relates to a self-supporting aerial optical cable capable of being identified through night vision. The self-supporting aerial optical cable comprises a cable core, an outer sheath, a reinforcing element, a suspension wire sheath and a rib, wherein the cable core is coated by the outer sheath; the reinforcing element is made of a single steel wire or glass fiber reinforced plastics and is coated by the suspension wire sheath; the rib is used for connecting the suspension wire sheath with the outer sheath; the cable core is formed by a central reinforcer, a plurality of loose tubes and a protective layer, wherein the loose tubes are arranged outside the central reinforcer and are coated by the protective layer; at least an optical fiber is arranged in each loose tube; two marking strips are symmetrically arranged on the suspension wire sheath; the suspension wire sheath, the outer sheath and the rib, which are made of the same materials, are formed integrally; and the marking strips are made of special materials. The self-supporting aerial optical cable has the main beneficial effects that the thickness of the suspension wire sheath is more convenient to control; the suspension wire sheath is smoother and round; the product production speed is higher and the percent of pass of the product is higher; the dead weight of the optical cable is lighter and the suitable span is longer; and the colors of the marking strips are more stable.

Description

[0001] This application is a divisional application for an invention patent named: self-supporting optical cable with identification strip, application date: January 26, 2014, and application number: 201410036276.5. technical field [0002] The invention relates to the technical field of cables, in particular to a self-supporting aerial optical cable capable of night vision identification. Background technique [0003] Most of the self-supporting optical cables are used for overhead laying. Due to their excellent load-bearing performance, the cables can be laid without additional steel strands for support. Usually, the cables are fixed on the clamps at the towers. That is, it can be placed freely between adjacent towers. However, with the rapid development of the communication industry, the number of cables between poles and towers increases sharply, which brings great trouble to maintenance because it is not easy to distinguish. For this reason, a large amount of researche...

AI Technical Summary

Problems solved by technology

The above-mentioned document does disclose the marking strip for optical cable identification, but it has the following common defects: (1) using stranded steel wire as the reinforcement part of the suspension wire to realize self-support, although it has achieved the function of greater bearing capacity, but , the sheath outside the stranded steel wire is extremely rough, and the performance of the sheath of the optical cable is extremely unsatisfactory; to achieve smoothness, the thickness of the sheath must be greatly increased, which increases the weight and cost of the optical cable and shortens the span of the optical cable.

(2) According to the defect of (1) above, it is difficult to control the thickness of the marking strip on the suspension wire sheath, so the quality of the product is extremely unstable and the production speed is quite slow

In addition, the color of the identification strips in the prior art is generally unstable. In Southeast Asia, after one year of overhead cable laying, the identification strips have faded to varying degrees, which affects the accurate use of the identification.

Images