Density control type anti-over-bending cable

Abstract

The invention discloses a density control type anti-over-bending cable, which belongs to the technical field of cables. The density control type anti-over-bending cable can be flexible and deformable in a straightened state by arranging an anti-over-bending chain in the cable, necessary bending laying of the cable is facilitated, meanwhile, a control pull wire is arranged to control the density of the anti-over-bending chain, and when the cable is bent, due to the fact that the distance between every two adjacent density control balls on the anti-over-bending chain is shortened, a control pull wire is correspondingly controlled to be changed into a loose state from a tightened state, after the tension of an inflation magnetic film in each density control ball is reduced, deformation inflation is conducted on the opposite side under the magnetic attraction effect, the density control balls are forced to conduct expansion extrusion in a hardening pipe between the density control balls, and then the filler microspheres in the hardening pipe are gradually dense from an original loose state, and the strength of the hardening pipe is also increased, so that the strength of the hardening pipe is maximum until the filler microspheres are completely and compactly extruded, the cable can be effectively prevented from being continuously bent, and the anti-over-bending protection of the cable is realized.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a density-controlled anti-bending cable. Background technique [0002] A cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires. [0003] Definition 1: A wire made of one or more mutually insulated conductors and an outer insulating layer to transmit power or information from one place to another. [0004] Definition 2: It is usually a rope-like cable twisted by 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, and the entire outer wrap Has a highly insulating covering. The cable has the characteristics of internal electrification and external insulation. [0005] Due to the large outer diameter of the power cable, it is difficult to transport and lay, and the requirements for the turning radius of the power cable are...

AI Technical Summary

Problems solved by technology

[0005] Due to the large outer diameter of the power cable, it is difficult to transport and lay, and the requirements for the turning radius of the power cable are relatively strict. If the turning angle of the power cable is too large, the inside of the conductor may be mechanically damaged, and the mechanical damage is caused by the insulating layer of the power cable. Even if the loop resistance is measured, the insulation and leakage tests are difficult to find defects, and the damaged part is overheated during operation to reduce the insulation strength of the cable until it fails

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