Elevator speed limiting device

Abstract

The invention discloses an elevator speed limiting device. The device comprises roller guide shoes, speed detecting devices, safety tongs and electric components, wherein the roller guide shoes are mounted on a car of an elevator; the speed detecting devices are arranged on the roller guide shoes and are used for detecting the real-time running speed of the elevator; the safety tongs and the electric components are electrically connected; the electric components are used for opening or closing the safety tongs based on the real-time running speed, detected by the speed detecting devices, of the elevator car. According to the elevator speed limiting device adopting the abovementioned structure, safety steel wire ropes in a traditional elevator speed limiting device can be saved, so that theeconomic cost can be saved, and moreover, the electric signal transmission speed of the electric components is far more than the response speed of the steel wire ropes, and the electric components can respond as the elevator runs at overspeed; in addition, the roller guide shoes and the safety tongs are hard to damage; the speed detecting devices and the electric components are only the easy-damage parts, so that the difficulty in maintenance and the cost of maintenance can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of elevator safety speed limiting, in particular to a safe and economical elevator speed limiting device. Background technique [0002] The function of the elevator speed limiting device is to monitor the running speed of the elevator in real time. When the running speed of the elevator car exceeds the designed rated speed, it will stop the elevator running urgently and force the car to continue moving to ensure the safety of the people in the car. At present, the combination mode of speed limiter and safety gear is used. The safety gear is fixed on the bottom wall of the elevator car. The safety gear is activated and released through a safety wire rope. When the speed limiter detects that the car is overspeed, the speed limiter sends out a signal. , start the wire rope pulling mechanism to pull the safety wire rope, and the safety rope then pulls the safety gear to brake the car. As the height of the floor ...

AI Technical Summary

Problems solved by technology

At present, the combination mode of speed limiter and safety gear is used. The safety gear is fixed on the bottom wall of the elevator car. The safety gear is activated and released through a safety wire rope. When the speed limiter detects that the car is overspeed, the speed limiter sends out a signal. , start the wire rope pulling mechanism to pull the safety wire rope, and the safety rope then pulls the safety gear to brake the car. As the height of the floor increases, the longer the safety wire rope used by the speed limiting device, the higher the corresponding elevator manufacturing cost. If the wire rope is broken, not only will there be serious safety problems, but it will be quite troublesome to replace

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