Elevator preventing car door from being opened when elevator car stops at dangerous height

Abstract

The invention discloses an elevator preventing a car door from being opened when an elevator car stops at a dangerous height. The elevator comprises landing doors arranged on all layer stations and the elevator car which is arranged in an elevator shaft and can move vertically. Each landing door comprises a landing door upper door sleeve located at the upper end of the landing door, and a landing door sill located at the lower end of the landing door. Landing door heads are arranged above the landing door upper door sleeves, and working gaps are formed between the elevator car and the landing doors. The elevator car comprises an elevator car sill located at the bottom of the elevator car, the car door located above the elevator car sill, and a foot protection plate arranged below the elevator car sill. The landing door heads are provided with door head blocking pieces, and the door head blocking pieces protrude in the working gaps. The car door is provided with car door blocking pieces corresponding to the door head blocking pieces, and the car door blocking pieces protrude in the working gaps. When the elevator car stops at the dangerous height, the door head blocking pieces block the car door blocking pieces to prevent the car door from being opened, and therefore safety accidents that personnel in the car fall into the shaft are avoided, the use safety of the elevator is improved, and meanwhile the structure is simpler and can be easily additionally arranged on the elevator in use.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an elevator that prevents the car door from being opened when the car stops at a dangerous height. Background technique [0002] In daily life, we often see news that people trapped in the elevator car fall into the elevator shaft and cause casualties. Such accidents will not only cause huge economic losses, but also bring serious negative impacts to society. [0003] For the situation of people trapped in the car, there are special safety operation regulations for rescue, but due to various reasons, the trapped people in the car and rescuers often do not operate according to the relevant safety regulations, which often leads to accidents. Obviously, relying on management systems and safety norms to ensure safety is unreliable and the last choice, because it depends on people's understanding and compliance with system regulations. Therefore, only when the design of the elevato...

AI Technical Summary

Problems solved by technology

However, for elevators with mechanical locks on the car door, the mechanical lock structure is more complicated and the cost is higher, and because it is related to the safety of the elevator, the reliability of its work is very high, and the locking elements in the mechanical lock are movable. Yes, if the design, installation, maintenance and other links are not done properly, it is prone to failure or failure, and it is difficult to meet the safety requirements. Therefore, most of the elevator doors currently in use are not equipped with mechanical locks.

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