A density-controlled anti-bending cable

Abstract

The invention discloses a density-controlled over-bending type cable, which belongs to the technical field of cables. In the present invention, an over-bending chain can be arranged in the cable, which is flexible and deformable in a straight state, which facilitates the necessary bending of the cable. When the cable is laid, the control cable is set to control the density of the anti-bending chain. When the cable is bent, because the distance between the adjacent density control balls on the anti-bending chain becomes shorter, the corresponding control cable changes from a tight state to a loose state. After the tension is reduced, the inflatable magnetic film in the density control ball begins to deform and inflate to the opposite side under the action of magnetic attraction, forcing the density control ball to expand and squeeze into the hardened tube between them, and then harden the tube. The filler microspheres are gradually denser from the original loose state, and the strength of the hardened tube also increases, until the filler microspheres are completely compacted and extruded. At this time, the strength of the hardened tube is the largest, which can effectively prevent the cable from continuing to bend. Anti cornering protection.

Description

technical field [0001] The invention relates to the technical field of cables, and more particularly, to a density-controlled over-bending cable. Background technique [0002] A cable is a power or signal transmission device, usually consisting of several or groups of wires. [0003] Definition 1: A wire that transmits electricity or information from one place to another, made of one or more mutually insulated conductors and an outer insulating protective layer. [0004] Definition 2: It is usually a rope-like cable formed by twisting several or several groups of conductors (at least two in each group), each group of conductors is insulated from each other, and often twisted around a center, the entire outer wrap Has a highly insulating cover. The cable has the characteristics of inner energization and outer insulation. [0005] Due to the large outer diameter of the power cable, transportation and laying are more difficult, and the power cable has stricter requirements o...

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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