Multistage layered high-intensity tunnel cable

Abstract

The invention relates to the technical field of a cable, and discloses a multistage layered high-intensity tunnel cable. The multistage layered high-intensity tunnel cable comprises an insulation rod,wherein a cable core is arranged at the outer part of the insulation rod; a cable insulation protection layer is movably sheathed at the outer side of the cable core; a cable inner protection layer is fixedly sheathed at the outer part of the cable core; an insulation filling layer is filled between the cable inner protection layer and the cable insulation protection layer; a rubber protection layer is fixedly sheathed at the outer part of the cable inner protection layer; a cable shielding layer is arranged at the outer part of the rubber protection layer. The multistage layered high-intensity tunnel cable has the advantages that through the matched use of the insulation rod, the cable core, the cable insulation protection layer, the cable inner protection layer and the insulation filling layer, when being twisted, the cable can rotationally slide in the cable inner protection layer, so that the conditions that when the cable is twisted in the use and installing process, the moving cannot be performed, so that the cable damage is caused, and the service life of the cable is influenced are avoided.

Description

Technical field [0001] The invention relates to the technical field of cables, in particular to a multi-level layered high-strength tunnel cable. Background technique [0002] The cable is usually a rope-like cable formed by twisting several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and is often twisted around a center. The whole outer bread has a height Insulated covering layer, and the cable has the characteristics of internal energization and external insulation. The cables are divided into power cables, control cables, compensation cables, shielded cables and high temperature cables. [0003] In the process of cable use and installation, the cable is easy to be twisted, making the cable easy to be damaged, and because the cable's compression resistance is weak, when the cable is squeezed and impacted, it is easy to be damaged, and the structure of the cable connection The space is not stable enough to easily fall ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-level layered high-strength tunnel cable, which has the advantages of strong compression resistance and stable structure, and solves the problem that the cable is easily twisted and the compression resistance of the cable is weak. When squeezed and collided, it is easy to be damaged, and the structure of the cable connection is not stable enough and easy to fall off, which can easily cause the cable to generate virtual electricity, and the connector does not have a protective function, which is prone to safety accidents

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