Sisal hemp core steel wire rope for high-speed elevator

Abstract

The invention discloses a sisal hemp core steel wire rope for a high-speed elevator, which comprises a sisal hemp core and an outer layer strand, wherein the outer layer strands wrap and are twisted on the outside of the sisal hemp core uniformly. The outer layer strands comprise 8 steel wire strands each of which has a seal type structure, a central steel wire is arranged in the middle of the outer layer strands, the inner layer of the outer layer strands consists of 9 thin steel wires which wrap and are twisted on the outside of the central steel wire uniformly, and the outer layer of the outer layer strands consist of 9 thick steel wires which wrap and are twisted on the outside of the inner layer uniformly. The invention also discloses a method for preparing the sisal hemp core steel wire rope for the high-speed elevator, which comprises: preparing the sisal hemp core, preparing the outer layer strands and combining to make the rope. The sisal hemp core steel wire rope for the high-speed elevator is uniform in diameter, high in torsion resistance and long in service life.

Description

technical field [0001] The invention relates to a steel wire rope and a preparation method thereof, in particular to a sisal-core steel wire rope for medium and high-speed elevators and a preparation method thereof. Background technique [0002] As the floors get higher and higher, the speed of the elevators is also gradually increasing, and the proportion of high-rise high-speed elevators in the elevators is also increasing year by year. Due to the relatively high operating speed of the elevators, the quality requirements for the steel wire ropes used are very high, especially The requirements for the uniformity of the diameter of the steel wire rope and the fatigue life are very high. At present, the steel wire ropes for elevators are mostly 8×19S+NF structural steel wire ropes. The national standard stipulates that the diameter range of steel wire ropes (not greater than 10mm) is +2% ~ +6% , the service life of the elevator with a ladder speed greater than 2m / s is very sh...

AI Technical Summary

Problems solved by technology

[0002]As the floors get higher and higher, the speed of the elevators is gradually increasing, and the proportion of high-rise high-speed elevators in the elevators is also increasing year by year. The speed is relatively high, and the quality requirements for the steel wire ropes used are very high, especially for the uniformity of the diameter of the steel wire rope and the fatigue life. The diameter range of steel wire rope (not greater than 10mm) is +2% to +6%. It is used in elevators with a ladder speed greater than 2m / s. Poor performance, high elongation, resulting in poor stability during use

In the prior art, the steel wire rope is prepared by plying first and then oiling, which cannot ensure sufficient lubrication of the steel wire. The stress relief in each process of the steel wire rope is not ideal, and the anti-rotation performance cannot be guaranteed. The diameter of the ordinary sisal core is poor. sex

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