Nylon drag chain The use environment of the cable in is very complex, which is often kneaded and pressed, so its wear resistance and pressure resistance are very important.
Nylon drag chain transportation is used in port, mining, steel, chemical, automobile, logistics, petroleum, packaging and other industries. As various underground mining mobile equipment, large lifting equipment, gantry crane, gantry crane, cantilever crane, bridge crane, rocker crane, marine grab, waste grab, transportation equipment, transportation equipment, cable collector, crown block, mobile crane and other equipment. The relevant reel system needs to receive and release cables frequently, and the laid nylon drag chain cable has been in a continuous and frequent reciprocating dynamic winding state. Under the installation environment of thousands of reciprocating movements and conflicts, the common nylon drag chain cable will have a series of problems such as conductor core breaking, sheath cracking, and aging. To this end, the company has developed a new type of nylon drag chain cable that is more wear-resistant and pressure resistant.
1. In order to increase the weatherability and kneading resistance of the cable, the insulation layer is made of high-strength radiation ethylene propylene rubber material with weatherability and kneading resistance. The ethylene propylene rubber insulation shall be tightly squeezed on the conductor to ensure that the section is free of visible bubbles and impurities, the appearance is smooth, the radiation is sufficient, and it is easy to separate from the conductor to achieve good insulation protection effect.
2. In order to strengthen the strength of the entire cable structure and ensure the durability of the cable, the central stiffener is selected. The central stiffener is composed of irradiated ethylene propylene rubber layer, which is extruded from aramid yarn and aramid yarn. In order to separate each cable core, improve the insulation effect, enhance the structural strength, and improve the tensile and compressive capacity, the filler reinforcement is selected. The filler reinforcement adopts fine hemp rope, which will not increase the weight of the cable while achieving the above purposes.
3. According to the functional requirements of nylon drag chain cable, special stranding method shall be adopted for the formation of cable cores.
4. In order to ensure the flexibility, resistance to twists, cracking, fracture and aging of the cable, you can experience long-term winding and dragging movements, maintain the stability of the cable during a long journey, prevent changes and spirals, and resist the damage of tension to the cable and the damage of spirals to the internal structure of the cable during winding, A reinforced torsion resistant layer (woven interlayer) is added between the inner and outer sheaths.
According to the test, the new wear-resistant and pressure resistant nylon drag chain cable product fully meets all the functional requirements of the planning. It can try to wind and drag for a long time. It has excellent tensile resistance, abrasion resistance, insulation pressure resistance, winding pressure resistance and other characteristics. It can resist the damage of the cable caused by the tension during the winding process. The spiral can damage the internal structure of the nylon drag chain cable.
