Wireless speed limiting system of elevator

Abstract

The invention discloses a cordless speed limit system of an elevator. The cordless speed limit system comprises a roller, a motion transferring mechanism and a speed limiter. The roller is connected with an elevator car or a counterweight housing, the surface of the roller closely adheres to a car guide rail or the surface of a counterweight housing guide rail, the roller is connected with the speed limiter through the motion transferring mechanism, when the roller vertically moves with the elevator car or the counterweight housing, the roller rolls with the frictional force generated between the roller and the car guide rail or the counterweight housing guide rail, the motion is transferred to the speed limiter through the motion transferring mechanism, thereby the collection of elevator car motion speed signals is realized, and the driving force is provided for a car safety device. The invention adopts the frictional force generated between the roller and the car guide rail or the counterweight housing guide rail to provide speed signals for the rolling roller and the driving force for the car safety device when the roller moves with the car or the counterweight housing, greatly simplifies the structure, and reduces the manufacturing cost; the whole speed limit system can be installed on the car or the counterweight housing, the space occupied is small, the maintenance is simple and convenient, and the daily maintenance cost is reduced.

Description

1. Technical field: [0001] The present invention relates to a cordless speed limiting system for an elevator, in particular to a cordless speed limiting system for an elevator car that uses driving rollers that roll purely on the guide rails of the elevator car or on the counterweight frame to provide speed signals and drive power for car safety devices. speed system. 2. Background technology: [0002] The working principle of the traditional elevator car speed limiting system is as follows: figure 1 As shown, the speed governor device traditionally used in the elevator industry generally consists of the speed governor sheave H installed in the machine room, the speed measuring and actuator device, and the speed governor tensioner device F installed in the shaft pit. , and a speed governor steel rope G vertically running through the full length of the hoistway. The speed governor steel rope G is wound between the sheave H and the tensioner device F to form a closed loop, a...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the above-mentioned overspeed governor is that: with the increase of floor height, the hoisting height of the elevator is extended, and the wire rope of the overspeed governor is lengthened accordingly, which not only increases the cost of elevator manufacturing, maintenance and operation, but also intensifies the The wear and tear of wire ropes and sheaves increases the noise of the elevator and reduces the reliability of the governor. At the same time, the elastic deformation of the wire rope prolongs the action response time and increases the maintenance workload of the elevator.

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