Optical cable capable of being identified at night

Abstract

The invention relates to the technical field of cables, and particularly relates to an optical cable capable of being identified at night. The optical cable comprises a cable core, an external sheath, a reinforced member, a suspension wire protective layer and a rib. The cable core is composed of a central reinforced member which is arranged at the center, multiple loose tubes which are arranged outside the central reinforced member, and a protective layer which wraps the multiple loose tubes. The loose tubes are provided with at least one light guide fiber. The suspension wire protective layer is symmetrically provided with two marking strips. The suspension wire protective layer, the external sheath and the rib of the same material are integrally formed. The external sheath is provided with the marking strips. The thickness of the marking strips is 0.2mm-1.0mm, and the marking strips are made of special material. The optical cable capable of being identified at night has the following main beneficial effects that the thickness of the suspension wire protective layer is more convenient to control, the suspension wire protective layer is smoother and round and normal, product production speed is more rapid and the percent of pass is higher; and weight of the optical cable is lower, 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 an optical cable that can be identified at night. 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 out at ho...

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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