Communication optical cable with marking strips

Abstract

The invention relates to the technical field of cables, in particular to a communication optical cable with marking strips. The communication optical cable comprises a cable core, an outer sheath covering the cable core, a reinforced element made of a single steel wire or glass fiber reinforced plastics, a suspension wire protective layer covering the reinforced element, and a rib connected with the suspension wire protective layer and the outer sheath, wherein cable core comprises a center reinforcer positioned in the center, a plurality of loose tubes positioned outside the center reinforcer, and a protective layer covering the loose tubes; the loose tubes comprise at least one light-guide fiber; two marking strips are symmetrically arranged on the suspension wire protective layer; the suspension wire protective layer, the outer sheath and the rib made of the same materials are formed integrally; a marking band is arranged on the outer sheath; the marking strips are made of special materials. The communication optical cable has the following benefits: the thickness of the suspension wire protective layer is more convenient to control, the suspension wire protective layer is smoother and rounder, the production speed of products is higher, and the percent of pass is high; the dead weight of cables is lighter, the suitable span is longer, and the color of the marking strips is 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 communication optical cable with identification strips. 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 researches have been carried o...

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.

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