The insulated pulley group is composed of an insulated rope and an insulated pulley. The number of pulleys is determined by the size of the load, and there are four types: single wheel, double wheel, three wheel, and four wheel. Widely used in live working. The metal components such as hooks, rings, and shafts of the insulated pulley block must be made of materials with mechanical properties not lower than 45 # steel; The protective plate, partition, pull plate, reinforcing plate, and insulation hook all need to be made of 3240 insulation plate; The pulley should be made of polyamide 1010 resin, with a tensile strength greater than 500 * 9.8 * 40Pa and a bending strength greater than 700 * 9.8 * 10Pa
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