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Wire rope rigging is a kind of wire rope system processed from wire rope as raw material, which is mainly used to improve the lifting, traction, tension and bearing capacity. Wire rope rigging has the characteristics of high strength, light weight, stable working ability and economic development, and it is not easy to suddenly break the whole root. Wire rope products include phosphating coated wire rope, galvanized wire rope, stainless steel wire rope and smooth wire rope. Phosphating coated wire rope has the ability of wear resistance and corrosion resistance.
The infinite life of the wire rope sheath is not allowed during the overall structural design of the hoisting equipment machinery.
When a wire break occurs at or near the sheath end of the wire rope, even if the number of wire breaks is small, it indicates that the stress in this part is very high, which may be caused by improper installation of the sheath end of the wire rope. The cause of the damage should be identified. If the length of the wire rope allows, the wire rope at the broken part should be installed reasonably.
If the broken wire is close to the people and the students form a local gathering of their own, the wire rope sleeve should be scrapped. If the broken wires are concentrated on the wire rope with a length of less than 6d, or can be concentrated on one wire rope, the wire rope sleeve shall be discarded in time even if the number of broken wires is less than the listed value.
In some enterprises, through the use of different occasions, fatigue is the main research problem that causes the damage of wire rope slings, and the broken wire appears in the process of continuous development after a very important period of using the method to design, but the broken wire The number can be gradually increased, and its time interval is required to be shorter and shorter. In this case, in order to be able to judge the increase rate of broken wires, we should carefully analyze, check and record the increase of broken wires. It is determined that this "law" can be used for analysis and research work methods to determine the date of scrapping of wire rope rigging in my country in the future development.
If the whole strand breaks, the wire rope rigging should be scrapped.
Wire ropes should be scrapped when the fiber core of the wire rope is damaged or the steel core (or the inner strands in a multi-layer structure) is broken, resulting in a significant reduction in the diameter of the wire rope.