Circular elevator compensation cable and machining process thereof

Abstract

The invention discloses a circular elevator compensation cable which comprises a core part and a protection layer arranged on the outer side of the core part, wherein the core part comprises 4 steel wire ropes arrayed to form a matrix; the protection layer is prepared from the following components in parts by mass: 10 to 20 parts of PVC, 10 to 20 parts of a plasticizer, 2 to 8 parts of nitrile rubber buna and 1 to 5 parts of a coupling agent. The invention further provides a machining process of the circular elevator compensation cable. The machining process comprises the following steps: (1) the 4 steel wire ropes are used as stress original pieces, and are arrayed to from the matrix; (2) an insulation material of the protection layer is prepared from the PVC, the plasticizer, the nitrile rubber buna and the coupling agent; and (3) extrusion is carried out. According to the circular elevator compensation cable and the machining process thereof, the bending radius of a product is consistent with a fully-plastic compensation chain; the number of times of the anti-fatigue loop test is increased to 3000000; and the use requirement on elevator maintenance can be completely met.

Description

technical field [0001] The invention relates to the technical field of elevator compensation cables, in particular to a round elevator compensation cable and its processing technology. Background technique [0002] In the process of elevator maintenance, there is a need for a compensation cable whose bending radius is equivalent to that of the all-plastic compensation cable, which can directly replace the old elevator, and whose performance parameters are not lower than that of the all-plastic compensation cable. For this reason, it is necessary to develop a circular compensation cable, the purpose of which is to be suitable for installation and replacement of elevator maintenance. Contents of the invention [0003] The object of the present invention is to provide a round elevator compensation cable and its processing technology. The round elevator compensation cable can well replace the all-plastic compensation cable and is convenient for replacement in elevator maintena...

AI Technical Summary

Problems solved by technology

A circular elevator compensation cable of the present invention adopts four steel wire ropes arranged uniformly in a matrix to solve the problem that the steel wire ropes are easy to twist and drive the compensation cable to shake. The protective layer adopts a special formula of PVC+plasticizer+NBR+coupling agent to solve The problem of cracking that is easy to occur during the use of the circular compensation chain is solved, and the anti-fatigue performance is improved to the standard of 3 million times