The wire rope for the elevator mainly refers to the trawling wire rope, and the traction rope bears the entire weight of the elevator, and is unidirectional or alternating bending around the wheel, the guide wheel or the reverse sheave in the elevator operation. The wire rope is also subjected to a high specific pressure in the rope groove. Therefore, the elevator wire rope must have high strength, flexibility and wear resistance. Here, the installation, maintenance and production process of the elevator wire rope are used to analyze the fatigue life. major factor.
The wire rope is a load component in the elevator, which bears almost all the weight of the elevator. The quality of the wire rope will directly affect the safety of the elevator operation. In the elevator operation, the wire rope is unidirectionally or alternately bent around the traction sheave, the guide wheel and the reverse sheave. The wire rope is subjected to a high specific pressure in the rope groove, and therefore the wire rope for the elevator is required to have high strength, flexibility and wear resistance.
The wire rope for elevators is generally a circular strand-like structure composed mainly of strands and rope cores composed of steel wires. Steel wire is the basic component of steel wire rope and requires high strength and toughness of steel wire. Wire strands are made of steel wire, usually 8 to 9 strands. The cord core is usually made of fiber sisal or olefinic synthetic fibers.
The factors affecting the service life of elevator wire rope mainly include the following aspects: the safety factor of the traction wire rope, the tensile load of the wire rope, the bending radius in the use of the wire rope, the material of the traction sheave and the groove type, the material of the wire rope itself and the tanning. Quality, lubrication of wire ropes, use and maintenance of wire ropes, etc.