What are the classification of wire ropes according to contact status?
2024-01-09
The steel wire rope is a flexible rope twisted by multiple or multiple strands of thin steel wire. The steel wire rope is twisted by multiple layers of steel wire into strands, and then twisted by a certain number of strands into a spiral rope with the core as the center. In materials handling machinery, for lifting, pulling, tensioning, and carrying purposes. The wire rope has high strength, light weight, stable work, not easy to break the whole wire suddenly, and reliable work.
We know that the wire rope can be divided into single winding rope, double winding rope and three winding rope according to the level of winding. The following main analysis of the wire rope according to the contact state of what are the main classification.
Experts pointed out that the steel wire rope can be divided into point contact, line contact and surface contact according to the contact state between each layer of steel wire.
First of all, let's talk about the point of contact with the wire rope. The wire diameters in the point contact wire rope strands are all the same. In order to make the steel wire force uniform, the helix angle of each layer of steel wire after winding is roughly equal, but the twist distance is not equal, so the inner and outer layers of steel wire cross each other, showing a point contact state.
Secondly, the wire contacts the wire rope. The twist distance of each layer of steel wire in the wire contact wire rope strand is equal, and the inner and outer layers of steel wire contact with each other on a spiral line, in line contact state. The performance of line contact wire rope is greatly improved than that of point contact, so it is widely used.
Finally, the sealed wire rope, that is, a kind of surface contact wire rope. The outer layer is made of B- shaped steel wire, with smooth surface and good wear resistance. Compared with other types of steel wire ropes of the same diameter, the tensile strength is larger and can withstand lateral pressure, but the flexibility is poor, the process is more complicated, and the manufacturing cost is high. It is often used as a bearing cable, such as a cable crane and a cable on an aerial ropeway.
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