A locking device for manual fall prevention of elevators

Abstract

The invention discloses a locking device used for lift manual falling prevention. The locking device comprises a crank, a connecting rod, a locking sliding block, a joystick and stop dogs, wherein the locking sliding block is arranged on a lift car frame and can slide horizontally; one end of the connecting rod is connected with the locking sliding block, the connecting rod can swing with the connecting point as the fulcrum, the other end of the connecting rod is connected with one end of the crank, and the connecting rod and the crank can swing with the connecting point as the fulcrum; the other end of the crank is connected with the lift car frame, and the crank can swing with the connecting point as the fulcrum; one end of the joystick is connected with the crank, the joystick and the crank can swing with the connecting point as the fulcrum, and the other end of the joystick is arranged in the lift car; and the stop dogs are arranged on a shaft wall and are matched with the locking sliding block in shape. When an existing anti-falling device fails, a person in the lift can manually brake a lift to achieve the purpose of falling prevention, and self rescue of the person in the lift is achieved.

Description

technical field [0001] The invention relates to an anti-falling device, in particular to a locking device for manual anti-falling of an elevator. Background technique [0002] In recent years, with the advancement of urbanization and the improvement of residents' living standards, elevators have become an indispensable means of vertical transportation in people's production and life. In order to ensure safe operation, general vertical elevators are equipped with anti-falling devices. Gear, safety gear and the buffer at the bottom of the hoistway and other devices to achieve. Once it is found that the elevator is descending at an overspeed, the speed limiter will first stop the elevator driving the main engine. If the inside directly hits the buffer, the car will also stop. However, an error in any part of the system or failure of components may lead to the paralysis of the entire anti-fall system. When the car lands at an extremely fast speed, although the buffer can reduc...

AI Technical Summary

Problems solved by technology

However, an error in any part of the system or failure of components may lead to the paralysis of the entire anti-fall system. force, but the effect is limited, and it may still cause casualties to the occupants in the elevator

Although the vertical elevator has been equipped with the above two anti-fall protection devices, it still cannot completely avoid the occurrence of elevator falling accidents.

Images