Novel elevator safety air cushion

Abstract

The invention discloses a novel elevator safety air cushion, which consists of an air cushion (1), a speed sensing device (2), an air generator (3), an embedded car floor (4) and vents (5), and is characterized in that: the air cushion (1) which almost has the same area as the embedded car floor (4) is arranged under the internal floor of the car of the elevator; the speed sensing device (2) is arranged on the car; the air generator (3) is arranged in the air cushion (1); and the two vents (5) are formed on the bottom face and side face of the air cushion (1) respectively. The air cushion has a simply designed structure, is convenient to mount and skillful in concept. With changing the structure of the elevator and affecting the normal operation of the elevator at normal times, the air cushion avoids damaging the elevator equipment during startup.

Description

technical field [0001] The invention relates to electric-driven traction or forced passenger elevators, ward elevators and cargo elevators, in particular to a novel elevator safety air cushion. Background technique [0002] Recently, safety accidents have emerged in an endless stream in our country, especially the elevators in large public places urgently need to strengthen safety protection measures to avoid accidents. The various safety devices arranged on the elevator both at home and abroad at present all are limited to the protection to elevator equipment (car) when the elevator falling accident takes place, lack the protection to the passenger's body in the elevator. When these devices fail, passengers can cause bone injuries to legs and feet. The present invention can effectively enhance the safety of the elevator as the last safety protection measure for passengers of the elevator. [0003] In the existing safety protection measures for elevators, when the speed of...

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Problems solved by technology

[0003] In the existing safety protection measures for elevators, when the speed of the car exceeds 1.3 times the rated speed, the electric actuation is forced to cut off the power supply, so that the brake on the traction main machine clamps the main shaft of the traction machine; when the speed of the car exceeds the rated speed When the speed is 1.4 times, the safety gear on the car is activated, and the brake block is used to clamp the rail; when the car falls to the pit, the buffer on the pit provides the reaction force of the car to avoid the car from being crashed. Accidents happen, but these safety measures can only passively provide the safety of the occupants in the car, and cannot provide protection for the occupants in the car

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