An elevator safety system

Abstract

The invention discloses an elevator safety system. The elevator safety system comprises an inflatable lifesaving device, a two-dimensional forked retractable speed reducing device, an in-car emergency response device, an outer-car emergency response device, an inflatable buffer device, a foot step type inflation electrical storage device, a foot step contact type limiting switch and an emergency start device. The emergency start device is provided with at least two gears including an upper gear and a middle gear; when the car descends normally, the emergency start device is at the middle gear, and a power supply of each device in linkage with the emergency start device is not in operation; when the car suddenly falls at a limit speed, the emergency start device is at the upper gear, and the power supply of each device in linkage with the emergency start device starts operating. When an elevator falls down, the elevator safety system is capable of reducing elevator falling speed and buffering impulsive force of a car falling to a well pit to enable the car to stably stop at the well pit, so that life safety of passengers in the elevator is effectively protected.

Description

technical field [0001] The invention belongs to the technical field of mechatronics, and in particular relates to an elevator safety system that slows down the falling speed of an elevator and smoothly stops at the bottom pit of a hoistway. Background technique [0002] With the continuous development of economy and society, the number of high-rise buildings is also increasing, and the use of elevators is becoming more and more popular. However, because the safety system design of elevators is not comprehensive enough, safety accidents about elevators often occur. For example, when an elevator is trapped, passengers in a panic will forcibly pry open the door or dig a hole because the rescue is not timely. This may cause the elevator to suddenly fall. According to the existing elevator safety measures, although it is often installed The buffer is used as the final protection link, but if the elevator falls too fast, the safety protection played by the buffer is extremely limi...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of economy and society, the number of high-rise buildings is also increasing, and the use of elevators is becoming more and more popular. However, due to the insufficient design of the safety system of elevators, safety accidents related to elevators often occur

For example, when an elevator is trapped, passengers in a panic will forcibly pry open the door or dig a hole because the rescue is not timely. This may cause the elevator to suddenly fall. According to the existing elevator safety measures, although it is often installed The buffer is used as the final protection link, but if the elevator falls too fast, the safety protection provided by the buffer is extremely limited

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