High-load-bearing steel wire rope and producing method thereof

Abstract

The invention discloses a high-load-bearing steel wire rope and a producing method thereof. The steel wire rope is prepared by that an outer strand, a filling strand and an inner strand are wrapped on a central strand through twisting, a surface contact state is formed between steel wires and between strands in the steel wire rope, the twisting directions of the outer strand, the filling strand and the inner layer are leftward, the twisting direction of the central strand is rightward, the strand lay lengths of the outer strand and the inner strand are 7.5-7.8 times as large as the strand sizes thereof, the strand lay lengths of the central strand and the filling strand are 6.4-6.6 times as large as the strand sizes thereof, the outer strand, the filling strand and the inner strand are wrapped on the central strand, the twisting direction of the rope is rightward, the inner and outer strands are same in lay length and twisting direction, and the lay lengths are 6.3-6.5 times as large as the diameter of the rope. Compared with a common round strand wire rope with a diameter same as that of the steel wire rope disclosed by the invention, the wear resistance of the steel wire rope is increased by nearly 30%, the impulse load resistance and the rotating resistance are increased, and the bearing capacity can be increased by 28.4%.

Description

technical field [0001] The invention relates to a steel wire rope, in particular to a high load-bearing steel wire rope. Background technique [0002] At present, the steel wire ropes used in construction machinery are mainly 6-strand contact wire ropes and multi-layer wire ropes. It is difficult for such wire ropes to meet the requirements of use under complex working conditions in terms of bearing capacity and fatigue resistance. The solid-strand steel wire rope is used in construction machinery instead of the above-mentioned steel wire rope. However, since the strand compression ratio and internal stress of the compacted strand steel wire rope cannot be well resolved, the breaking strength, fatigue resistance and rotation resistance of the steel wire rope have not reached Requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a steel wire rope for engineering machinery with high bearing capacity. [0...

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Problems solved by technology

[0002] At present, the steel wire ropes used in construction machinery are currently mainly 6-strand contact wire ropes and multi-layer wire ropes. It is difficult for this type of wire rope to meet the use requirements in complex working conditions in terms of load-carrying capacity and fatigue resistance. Solid-strand steel wire ropes are used in construction machinery instead of the above-mentioned steel wire ropes. However, since the strand compression ratio and internal stress of the compacted strand steel wire ropes cannot be well resolved, the breaking strength, fatigue resistance and rotation resistance of the steel wire ropes have not been achieved. Requirements

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