Single-layer four-strand non-rotating steel wire rope and manufacturing process thereof

Abstract

The invention relates to a steel wire rope manufacturing process, in particular to single-layer four-strand non-rotating steel wire rope and a manufacturing process thereof. The steel wire rope is manufactured by spinning and hammering four outer layer strands which are independently compacted and a rope core containing an oil-containing polymer high molecular material, wherein the lay length of each outer layer strand is 6.6-7.0 times the diameter of the strand; and the lay length of the entire steel wire rope is 8.6-9.0 times the diameter of the rope. The steel wire rope provided by the invention has a flat and smooth outer surface, so that the contact areas of the steel wire rope with a pulley, a drum and a support wheel are increased, the stress concentration is reduced, and the service life of the steel wire rope is ensured; the rope core is made of the oil-containing polymer high molecular material, so that internal lubrication of steel wire rope is ensured; the manufacturing cost is relatively reduced; and a reasonable parameter design is adopted, so that the rotating resistance of the steel wire rope is equivalent to that of a 35W*7 surface contact steel wire rope.

Description

technical field [0001] The invention relates to a steel wire rope manufacturing process, in particular to a single-layer four-strand non-rotating steel wire rope and a manufacturing process thereof. Background technique [0002] The wire ropes used on heavy mobile crawler cranes are generally 35W×7 surface contact wire ropes. The twisting method is: the center strand is 1×7 common stock, the first layer is 6 1×7 surface contact strands, and the second layer is 6 large and 6 small 1×7 surface contact strands alternately distributed , the 18 strands are twisted once as the rope core; the third layer is 16 1×7 surface contact strands, wrapped around the outside of the rope core, and the twist direction is opposite to the rope core. In this way, during the operation of the steel wire rope, the torque generated by the rope core and the outer strands cancel each other out, so as to achieve the purpose of anti-rotation. This kind of wire rope has the characteristics of anti-rotat...

AI Technical Summary

Problems solved by technology

[0003] The 35W×7 surface contact wire rope mainly has the following four disadvantages: 1. The price is too high, with an average price of more than 40,000 yuan / ton; 2. Since the wire rope is all steel wire, the internal oil storage of the wire rope is insufficient; 3. The service life is long Not all, the short life span is less than half a year, and it is often difficult to reach an agreement with the supplier on compensation; 4. The structure of the steel wire rope is unstable, and it is easy to be difficult to rope, loose strands, and rope core extrusion during multi-layer winding.

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