Elevator falling piston type air cushion buffering device

Abstract

An elevator falling piston type air cushion buffering device is mainly composed of two parts, namely a piston body and a buffering well. The piston body is arranged at the bottom of an elevator car, the piston body is of a cylinder-like structure with a gradual transition diameter, the upper part of the piston body is thick, and the lower part of the piston body is thin. The buffering well is arranged at the bottom of an elevator shaft and is a downward cylindrical deep well with a certain depth, and the diameter of the buffering well is slightly larger than that of the upper end of the pistonbody. A conventional spring type or oil filling type shock absorber is arranged in the center of the bottom of the buffering well to serve as auxiliary damping. An elastic rubber shock absorbing ringwith the inner diameter similar to that of the buffering well is arranged on the edge of an upper opening of the buffering well, is used for keeping the sealing performance of the edge of the buffering well and accurately adjusting the clearance around the piston body and the buffering well, and can also serve as a final damping device. The car falls, passes through double buffering and is finally stably stopped on the device. The buffering device is simple in structure and does not need to be maintained. By means of the air resistance, the inertia of elevator falling can be effectively buffered, the landing impact force of an elevator can be counteracted, and the safety of the elevator can be improved. Smooth and slow deceleration avoids harm to the human body, and the discomfort at themoment of falling impact can be relieved.

Description

technical field [0001] The invention relates to a shock-absorbing and buffering device for an elevator falling, in particular, the piston structure added at the bottom of the car is used to offset the impact force of the elevator falling by means of air buffering. Background technique [0002] With the rapid development of my country's economy and the rapid rise of the real estate industry, the use of elevators is becoming more and more common. At present, my country's elevator production and ownership have ranked first in the world. According to the data released by the General Administration of Quality Supervision, Inspection and Quarantine, as of the end of 2015, the number of elevators in use in my country has exceeded 4.25 million, and it is growing at a rate of about 20% every year. At the same time, elevator crash accidents are common in the news, and elevator safety issues have gradually become the focus of social attention. In the elevator failure, the elevator fa...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that when the elevator car falls, all the weight is concentrated on the shock absorber, which cannot disperse the force.

The buffer distance is small, and the deceleration is too sudden, which will still cause some personal injury

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