WIRE ROPE
Steel wire rope installation must strictly follow the equipment manufacturer's instruction. The installation process requires extreme care. Statistics show that 50% of wire rope quality problems are caused by improper installation.
After installation, the steel wire rope assembly needs to be run repeatedly under light loads and low speeds to acclimate it to the operating conditions. Generally, after repeated runs, the lay length of the wire rope increases slightly, the diameter decreases slightly, and the wire rope undergoes some permanent elongation due to external forces. This is normal. If conditions permit, after the breaking-in period, any torque and twisting that may have occurred can be relieved at the connections between the wire rope and other equipment components.
In many cases, cranes with installed new steel wire ropes must be tested before use. This verification test involves intentionally overloading the crane to varying degrees. The degree of overload depends on the crane type and lifting capacity, as well as the equipment certification agency. The overload applied during the test may range from 10% to 100% of the crane's rated lifting capacity. Please note that the overload test must be performed after the breaking-in period.
Multi-layer winding equipment requires extreme caution. Improper alignment of adjacent layers of wire rope on the drum can cause shearing, significantly shortening the life of the wire rope. If the crane uses a smooth, grooveless drum, ensure that the wire rope does not become tangled laterally.