40results about How to "Reduce laying space" patented technology

The invention relates to a thin-wall crosslink low smoke cable for ships communication or control signal and a preparation method thereof. The cable structure is that the outer layer of a multi-strand conductor is an insulating layer, the outer layer of the insulating layer is a shielding layer, the outer layer of the shielding layer is a lapped covering, the outer layer of the lapped covering isarmor, and the outer layer of the armor is a sheathed layer. The preparation method is as follows: a line-cable stranding machine strands tin plated copper wire as a conductor; an extruder is utilized to manufacture the insulating layer outside the conductor, the insulating layer is subjected to irradiation and crosslinking by an electron accelerator; a cable former is ustilized to strand insulated wires together; the shielding layer and the armor are braided by utilizing a braiding machine; and the sheathed layer is manufactured by the extruder, and the sheathed layer is subjected to irradiation and crosslinking by the electron accelerator. The thin-wall crosslink low smoke cable has the advantages of small outside diameter, light weight, ageing resistance, tear resistance, heat oil resistance, high flame retardancy, low smoke, no halogen, low toxicity and good ability of keeping excellent electrical performance and mechanical property in hostile environment, wherein the weight of the thin-wall crosslink low smoke cable is 30%-45% lighter than that of common cables.

The invention discloses a direct-current power and control composite cable for rail transit, and relates to the field of cables. The composite cable comprises a power cable core and at least one control cable core, and the control cable cores are arrayed outside the power cable core in a surrounding mode; the power cable core comprises a first conductor formed by multiple stranded copper wires, wherein the first conductor is wrapped by a first insulating layer; each control cable core comprises two control core wires stranded in pairs, and each control core wire comprises a second conductor formed by stranding multiple copper wires, wherein the second conductor is wrapped by a second insulating layer. The power cable and the control cables are effectively combined, laying investment and material production cost are reduced, and laying space is reduced; the power cable and the control cables do not disturb each other, and safety of system operation is ensured; the composite cable has the advantages of being fireproof, large in carrying capacity, resistant to impact voltage and mechanical damage, free of halogen or toxicity, anti-explosion, waterproof, resistant to corrosion, long in service life, safe, structurally flexible and resistant to mechanical vibration, overloads and high temperature.

The invention relates to a towline cable and a manufacturing process thereof. The towline cable structurally comprises a conductor, an insulator, a tensile core, an inner sheath and an outer sheath. The radiation ethylene propylene rubber insulator is arranged on the periphery of the conductor, the low temperature resistant elastic body inner sheath is arranged on the periphery of the radiation ethylene propylene rubber insulator, and the flexible polyurethane outer sheath is arranged on the periphery of the inner sheath. The manufacturing process is that a tinned copper wire is stranded by a wire cable stranding machine to server as the conductor, an extruder device is utilized to extrude the environment-friendly radiation ethylene propylene rubber insulator on the outside of the conductor, the stranding machine is utilized to strand high-strength tensile fibers, flexible polyvinyl chloride (PVC) is extruded by the extruder device on the outer layer to serve as the tensile core, then a cabling machine is utilized to strand an insulation wire core and the tensile core together, and the extruder device is utilized to extrude low temperature elastic body sheath materials to serve as the sheaths. The cable has the advantages of high mechanical strength, flexibility, high abrasion resistance, aging resistance, cracking resistance, mould resistance, moisture resistance and acid-base corrosion resistance, is flexible under the low temperature condition and suitable for special environments such as weapons, electronics, high-level civil use.