Anti-shearing elevator car door system based on pressure sensing and shearing prevention method

Abstract

The invention relates to an anti-shearing elevator car door system based on pressure sensing and a shearing prevention method. The anti-shearing elevator car door system comprises a control unit, an elevator movement monitoring unit, pressure acquisition units and an elevator stopping signal output unit. The elevator movement monitoring unit is connected with the control unit. An upper door frameand lower door frame of an elevator car door are provided with the pressure acquisition units connected with the control unit. The elevator stopping signal output unit is connected with the control unit, and is used for receiving a stopping instruction which is sent by the control unit during extrusion and sending the stopping instruction to an elevator safety loop and a steel wire rope brake so that the safety loop can be cut off and the steel wire rope brake can work. The anti-shearing elevator car door system is universal, reasonable and safe, can be used during elevator delivery, new installation and regular installation, and has a relatively high practical value.

Description

technical field [0001] The invention belongs to the technical field of elevator safety, and in particular relates to a pressure sensing-based anti-shear elevator car door system and a shear prevention method. Background technique [0002] With the rapid development of the economy and the ever-changing cities, various high-rise buildings are increasing day by day. Elevators installed in high-rise buildings play an increasingly important role in people's lives and become an important means of transportation for people's daily travel. At the same time, as a kind of electromechanical special equipment, the safety of elevators has attracted more and more attention. Among them, the unexpected movement of the elevator car will cause the elevator door frame to squeeze and shear the passengers, which is a very dangerous part. This kind of accident, once the consequence that causes is disastrous, often causes the casualty of passenger. [0003] When the elevator door is opened, the m...

AI Technical Summary

Problems solved by technology

At the same time, as a kind of electromechanical special equipment, the safety of elevators has attracted more and more attention. Among them, the unexpected movement of the elevator car will cause the elevator door frame to squeeze and shear the passengers, which is a very dangerous part. This kind of accident, once it happens, the consequences will be disastrous, often causing casualties of passengers.

[0003] When the elevator door is opened, the movement of the car causes the elevator door frame to squeeze and shear the passengers, which is an extremely dangerous state, causing accidents such as shearing and extrusion, which directly affect the life safety of passengers

In fact, the problem of how to prevent shearing accidents has always been a thorny problem in the elevator industry, but the current situation is not optimistic. For many years, no manufacturer has been able to propose an effective solution to prevent such accidents. Whether it is design or mechanical protection, it often starts from the control system, but it still fails to solve the problem fundamentally

At present, the implementation of this protection measure is rare in the industry. Most of them use the protection of accidental movement of the elevator car to predict the upcoming accident and stop the elevator. However, there are still cases where the elevator cannot be effectively stopped when the brake fails. Case

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