Elevator speed limiting device and method for power maintenance

Abstract

The invention discloses an elevator speed limiting device for power maintenance. The elevator speed limiting device for power maintenance comprises an installation box, wherein a cable wheel is arranged at the inner side of the installation box, a main shaft is installed on the cable wheel, an electromagnetic switch is arranged at the outer side of the installation box, a driving rod is connected to the outer side of the electromagnetic switch, and the driving rod is located at the outer side of the installation box; and a first transverse shaft is installed on the driving rod, a trigger block is arranged on the upper surface of a brake rod, a brake plate is installed at the other end of the brake rod and located between the cable wheel and the installation box, and a microswitch is arranged above the trigger block and installed on the outer side surface of the installation box. According to the elevator speed limiting device for power maintenance, after the electromagnetic switch stops working, a vortex spring pushes the driving rod to rotate on the first transverse shaft at the moment, the driving rod conveniently pushes and jacks a pawl, the pawl can rotate, connection between the pawl and a ratchet wheel is facilitated, and subsequent related structures can be conveniently triggered and driven.

Description

[0001] This application is a divisional application with an application date of July 14, 2020, and an application number of CN202010676746.X, whose invention name is a speed limiting device for an elevator for electric power maintenance. technical field [0002] The invention relates to the technical field of electric power maintenance, in particular to an elevator speed limiting device and method for electric power maintenance. Background technique [0003] The power supply system is composed of power equipment, cables, and support rods. When the high-altitude power supply equipment fails, it is often necessary to perform maintenance on the high-altitude power supply. In order to facilitate the maintenance of high-altitude power equipment, workers usually need to use elevators, etc. The equipment carries out climbing work, which is convenient for workers to reach the corresponding height for maintenance and maintenance of related equipment. However, the existing winder devic...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a speed-limiting device and method for an elevator used for electric power maintenance, so as to solve the problem that when the driving wire pulley of the elevator proposed in the above-mentioned background technology is overspeeding, it is easy to affect the stability of the traction of the lifting platform, thereby easily causing related problems. In the case of personnel falling from a high altitude, overspeed work will bring a large pulling force to the traction cable, which may easily cause the traction line to break. When the drive wire wheel of the elevator is overspeeded, it is convenient to stop the drive wire wheel of the elevator in an emergency. Or limit the speed, which makes it inconvenient for the lifting platform to hover at a fixed point, which affects the normal power maintenance work of workers

Images