Use a soft, thin copper single wire, bundled and twisted at a small pitch. The bending and torsion of the pipeline robot cable is also affected by the insulation and sheath structure. Therefore, it cannot be considered that the thinner the monofilament, the smaller the pitch, the better.　the use of co-directional stranding and twisting can improve flexibility. in order to facilitate the relative sliding of the wires in the insulating layer and facilitate installation and maintenance. Electric drill cables and small cross-section mining machine cable conductors should be tin-plated, and large cross-section mining machine cables should be isolated and insulated with paper tape outside the conductors.　　

      The insulation layer is required to have sufficient electrical insulation performance. 1. Use rubber with a rubber content of no less than 35 percent. 2. The insulation thickness is thicker than general rubber-sheathed cables. 3. Use rubber with good electrical properties and use good extruded rubber. Process (such as extrusion rubber vulcanization continuous production line) 3: The shielding layer uses semi-conductive rubber as the shielding layer, and its transition resistance should meet the standard requirements to ensure the reliable operation of the relay protection system in an accident state. 

      "Cushion Core": The cushion core should fully play a cushioning role when the pipeline robot cable is smashed or squeezed, and the outer diameter of the cable should not be too large. A reasonable design is required to fill the gaps between the insulated core wires.　the mechanical properties should not be lower than the requirements of the insulating rubber.　no adhesion to the insulated core.