A manual anti-drop crank connecting rod device for vertical elevators

Abstract

The invention discloses a manual anti-falling crank and connecting rod device for a vertical elevator. The manual anti-falling crank and connecting rod device comprises a crank, a connecting rod, a locking sliding block, an operation rod and a set of avoiding holes. The locking sliding block is arranged on an elevator car frame and can horizontally slide. One end of the connecting rod is connected with the locking sliding block through a first connecting shaft, and the connecting rod can swing with the first connecting shaft as the fulcrum. The other end of the connecting rod is connected with one end of the crank through a second connecting shaft, and the connecting rod and the crank can mutually swing with the second connecting shaft as the fulcrum. The other end of the crank is connected with the elevator car frame through a third connecting shaft, and the crank can swing with the third connecting shaft as the fulcrum. One end of the operation rod is connected with the crank through a fourth connecting shaft, and the operation rod and the crank can mutually swing with a connecting point as the fulcrum. The other end of the operation rod is arranged in an elevator car and provided with a clamp hook device. The avoiding holes are formed in the shaft wall and are matched with the locking sliding block in shape. When an existing anti-falling device is in failure, a person in the elevator can manually brake the elevator to achieve the anti-falling purpose, and self rescue of the person in the elevator is achieved.

Description

technical field [0001] The invention relates to a fall prevention device, in particular to a manual fall prevention crank connecting rod device for a vertical 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, althou...

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.

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