Rope for elevator and manufacturing method therefor

Abstract

The present invention relates to a rope for an elevator. The rope for the elevator comprises: a center strand formed by twisting a plurality of wires; inner layer strands formed by twisting the plurality of wires and arranged along the outer periphery of the center strand; and outer layer strands formed by twisting the plurality of wires and arranged along the outer periphery of the inner layer strands, wherein ten of each of the inner layer strands and the outer layer strands are prepared, the diameter of the center strand, the diameter of the inner layer strand and the diameter of the outer layer strand are respectively 0.33-0.35 times, 0.13-0.15 times and 0.22-0.24 times as large as the diameter of a first imaginary circle circumscribed around the outer layer strands, and a fill factor is 64-67%.

Description

technical field [0001] The present invention relates to ropes for elevators (elevators) and methods of manufacture thereof, and more particularly to ropes for elevators and methods of manufacture thereof such that the structure can be stabilized due to an increased number of strands and a high filling factor , excellent roundness and dimensional stability can be obtained, and passenger comfort can be improved by minimizing vibration when driving lifts. Background technique [0002] Generally, conventional elevator ropes for mid-rise / high-rise buildings consist of eight outer strands and a central part (individual wire rope core (IWRC) or fiber). Typically, the fiber-applied product is used for the main traction, and the IWRC-applied product is used for the governor. [0003] However, since a high safety factor is required for use in super high-rise buildings, a higher breaking load is required compared to conventional elevator ropes with a fiber core. Although it is possib...

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Problems solved by technology

[0003] However, since a high safety factor is required for use in super high-rise buildings, a higher breaking load is required compared to conventional elevator ropes with a fiber core

Although the strength of the wire can be increased to obtain a high breaking load, due to the characteristics of the elevator rope, there is a friction between the main traction rope and the traction pulley (cable pulley), therefore, there is a limit to the increase in the strength of the wire forming the elevator rope

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