Processing method of drag chain cable conductor

Abstract

The invention discloses a processing method of a drag chain cable conductor, comprising the following steps: a plurality of copper wires with the elongation of more than or equal to 18% are selected;a strand is formed by standing 2-3 copper wires, multiple strands are taken to wrap the periphery of a hollow first reinforcing wire to obtain a wire unit, and the first reinforcing wire is arranged in the center of the strands; a plurality of wire units are arranged at the inner periphery of a drag chain cable conductor; and the wire units are firstly bundled and then re-stranded, and a second reinforcing wire is additionally arranged at the center of the compound strand. The mode of wire bundling and then compound stranding is conducive to maintaining the stability of the conductor structure, ensuring that the conductor is evenly stressed during bending, avoiding mechanical stress concentration and prolonging the bending fatigue life of the conductor. The reinforcing wires are added to the central positions of the strands and the compound strand to improve the bending strength of the whole conductor, increase the gaps between the single copper wires and reduce the stress effect during bending, so as to prolong the bending fatigue life of the conductor. Therefore, the bending frequency of the cable is greatly increased, and the comprehensive strength of the cable is high.

Description

technical field [0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to a processing method for drag chain cable conductors. Background technique [0002] Drag chain cables are mainly used in industrial electronic systems, automatic production lines, storage equipment, robots, fire protection systems, cranes, CNC machine tools and metallurgical industries. Since the supporting cables often need to move at high speed when the equipment unit needs to move back and forth, in order to prevent the cables from being entangled, worn, pulled off, hung and scattered, the cables are often put into the cable drag chain to protect the cables, and The cable can also move back and forth with the drag chain. Therefore, the cable should choose the most flexible conductor. Generally speaking, the smaller the diameter of the conductor, the softer the conductor and the better the flexibility of the cable. However, the diameter of the copp...

AI Technical Summary

Problems solved by technology

Therefore, the cable should choose the most flexible conductor. Generally speaking, the smaller the diameter of the conductor, the softer the conductor and the better the flexibility of the cable. However, the diameter of the copper wire is proportional to its mechanical fatigue resistance, and the smaller the diameter The weaker the strength of the copper wire against mechanical waste, that is, the poorer the toughness

The towline electrical system is in a dynamic working environment with repeated cycles, and the conductors used have extremely high requirements for toughness. Therefore, in the process of selecting conductors for the towline electrical system, attention should be paid to the combination of flexibility and toughness, and a degree needs to be mastered. The conductor blindly pursues refinement, and the phenomenon of copper wire winding will occur during use. The conductor is easy to break during the working process, because the conductor is too thin, and the tensile strength of the conductor is reduced.

[0003] The stability of the conductor structure of the traditional towline cable is not high, so that the force on the conductor is uneven when it is bent. Due to the concentration of mechanical force, the bending fatigue life of the conductor is not high. Therefore, the number of times the cable is bent is not high. The tensile strength is low, the overall flexibility is not enough, the service life during use is not long, or various damages and failures occur in a short period of time, and the comprehensive strength is too low to meet the needs of equipment

Images