Coated cable

Abstract

The invention provides a covered wire rope for a running wire, having good flexibility against bending, prevented from abrasion caused by the contact of wires of a core rope and side members with each other, the contact of the core rope with the side members and the contact of the side members with each other, and achieving good transmission of driving force to a sheave and silence. The core ropehas a core rope body having a synthetic resin core and two or more side strands arranged around the resin core and twisted so as to have spaces between them at one or more parts, and a resin coveringlayer including the core rope body. The side member has a synthetic resin core and two or more strands or wires twisted around the core. The resin covering layer has spacer parts at the outer periphery, and uniform spaces are formed among respective side members by the spacer parts. A resin layer integrated with the resin layer of the outer layer, going over the circumcircle of the side member fills the spaces, and also fills the spaces among the strands or wires of each of the side members.

Description

technical field [0001] The present invention relates to a cable, and more particularly to a sheathed cable suitable for use as a moving cable in a crane or an elevator. Background technique [0002] Moving ropes, such as hoisting ropes for elevators or ropes for loading and unloading machinery such as cranes, move through pulleys and are wound up on drums, so they are under strict conditions that tension and bending act on the entire length. under. In addition, for example, for hoisting ropes of elevators, it is strongly desired to reduce the diameter of pulleys and downsize the system, and in order to achieve this, it is essential to improve the bending fatigue resistance of the cables used. [0003] Conventionally, as a rope for a moving rope used under the condition that the ratio D / d of the pulley diameter D to the rope diameter d is about 40, as stipulated in Japanese Industrial Standards G 3525 or 3546, etc., the following is used. The rope of the above structure: it...

AI Technical Summary

Problems solved by technology

However, the former still cannot avoid wear and tear due to the direct contact between the side strands.

In addition, in the former and the latter, since the circumscribed circle of the side stranded strands and the pulley often slide relative to each other in metal contact, it still cannot solve the problems of noise generation, wear of the soft pulley, and a lot of labor and time spent on replacing the pulley.

In addition, it is difficult to avoid abrasion due to contact between the core rope and the individual filaments of the side strands, and the rope as a whole tends to have insufficient flexibility against bending.

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