Compound core steel wire rope for high-speed elevator and production method thereof

Abstract

The invention relates to a compound core steel wire rope for a high-speed elevator. The compound core steel wire rope for the high-speed elevator is characterized in that outer-layer strands and a compound rope core are included; the compound rope core comprises 1-5 rope core strands, each rope core strand comprises external winding steel wires and a plastic core strand, the outer half side of each external winding steel wire is in an oval shape, the outer side of each plastic core strand is covered with a layer of the external winding steel wires, and the plastic core strand is made of polypropylene or polyethylene; 8-9 outer-layer strands cover the outer side of the compound rope core; surface galvanization steel wires or steel wires made of stainless steel are adopted as the external winding steel wires of the rope core. The invention further relates to a production method of the compound core steel wire rope for the high-speed elevator. The compound core steel wire rope for the high-speed elevator and the production method thereof have the advantages of being capable of prolonging the fatigue life of the steel wire rope for the high-speed elevator.

Description

Technical field [0001] The invention relates to a steel wire rope, in particular to a composite core steel wire rope for high-speed elevators and a production method thereof. Background technique [0002] The elevator wire rope is an important safety component of the elevator. The formation of elevator traction is mainly generated by the friction force between the elevator wire rope and the traction sheave. In order to obtain a reliable and sufficient traction force, in addition to different designs in the traction sheave configuration, the number of ropes, the shape of the rope groove, etc., the structure of the steel wire rope and the surface hardness of the steel wire used for the wire rope and the fatigue of the wire rope The life span has strict requirements. [0003] At present, the elevator wire rope produced in China is mainly formed by the contact strands of the sisal core and the outer wire. Because the sisal core wears with the increase of fatigue life, the sisal core i...

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Problems solved by technology

[0003] At present, the elevator steel wire ropes produced in China are mainly composed of sisal core and outer wire contact strands to form a steel wire rope. Since the sisal core wears out with the increase of fatigue life, the sisal core is prone to early fragmentation. The aspect is relatively poor, which affects the fatigue life of the entire elevator wire rope, so it cannot meet the use requirements of medium and high-speed elevators. The steel wire ropes currently used for high-speed elevators are all steel core wire ropes. When the elevator rises to the top, the wire rope cannot be in close contact with the rope groove, and it needs to increase the load, which further increases the weight of the elevator, wire rope and accessories, and affects the service life of the high-speed elevator wire rope

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