Low-smoke zero-halogen flame-retardant environmental protection elevator trailing cable

Abstract

The invention discloses a low-smoke zero-halogen flame-retardant environmental protection elevator trailing cable. The cable comprises a flat-shaped outer sheath. Multiple groups of twisted wire cores are arranged in the outer sheath with intervals from left to right. There are ten groups of the twisted wire cores. The ten groups of the twisted wire cores comprise a first group of twisted wire cores, a second group of twisted wire cores, a third group of twisted wire cores, a fourth group of twisted wire cores, a fifth group of twisted wire cores, a sixth group of twisted wire cores, a seventh group of twisted wire cores, an eighth group of twisted wire cores, a ninth group of twisted wire cores and a tenth group of twisted wire cores from left to right. The elevator trailing cable possesses advantages that the structure is stable; and low-smoke zero-halogen performance, environmental protection performance and a shielding effect are good and so on.

Description

technical field [0001] The invention relates to the technical field of elevator accompanying cables, in particular to a low-smoke, halogen-free, flame-retardant and environment-friendly elevator accompanying cable. Background technique [0002] The elevator is an indispensable means of transportation in high-rise buildings. It needs to move up and down frequently, and the cable that provides the working power for the elevator must also move up and down with it. With the development of technology and the needs of people's work and life, the elevator Some activities such as communication and monitoring are also required in the interior. For this reason, relevant signal lines must be hung next to the elevator, and it will go up and down repeatedly with the elevator. During the high-speed movement of the elevator, the wind resistance of the cable is large, so that the cable is frequently pulled, which affects the service life, and because the various lines are too complicated, a...

AI Technical Summary

Problems solved by technology

During the high-speed movement of the elevator, the wind resistance of the cable is large, so that the cable is frequently pulled, which affects the service life, and because the various lines are too complicated, and these lines are relatively poor in tensile performance, they are frequently lifted in a long period of time. After that, there may be breakage or damage, resulting in the consequences of power failure or other related function interruption

In addition, the faster the elevator speed, the greater the wind resistance of the cable. In order to ensure the safe operation of the cable, the elevator can only run in a relatively low speed range, which affects work efficiency.

[0003] Currently known elevator cables use halogen-containing materials such as PVC insulation layer and sheath layer. It is not burned to death immediately, and because it is smoked to suffocation, and at the same time, halogen-containing substances release corrosive gas of halogen acid when burning, in addition to harming the human body, it will also cause indirect damage to the equipment. It is not suitable for densely populated or space Small places and high-end elevators

In addition, the shielding performance of the existing elevator cables is poor, and the adjacent twisted cores will interfere, which will affect the performance of the elevator cables

Images