Rope gripper device to prevent accidental movement of the car

Abstract

The invention provides a wire holder for preventing a lift car from moving by accident. The wire holder comprises a driving control mechanism, a transmission gear assembly, a fan-shaped pressing plate, a sliding block, a rolling shaft, an energy storage spring, a transmission arm, a movable clamping plate, a fixed clamping plate and a guide supporting shaft, wherein the driving control mechanism is connected with the transmission gear assembly, a main gear shaft in the transmission gear assembly is engaged with the fan-shaped pressing plate, the fan-shaped pressing plate can slide along the sliding block and is hinged to the rolling shaft, the energy storage spring is connected with the rolling shaft, the rolling shaft is hinged to one end of the transmission arm, the other end of the transmission arm is hinged to the movable clamping plate, and the movable clamping plate can be driven by the transmission arm to move close to or away from the fixed clamping plate along the guide supporting shaft. The rolling shaft is pushed by the energy storage spring to move along an arc, and then the movable clamping plate is driven to get close to the fixed clamping plate to quickly clamp a steel wire rope. The wire holder is ingenious in structure and can effectively prevent the lift car from moving by accident.

Description

technical field [0001] The invention relates to the technical field of elevator safety protection devices, in particular to a rope clamp device for preventing accidental movement of a car. Background technique [0002] The potential safety hazards of elevators include many aspects, among which the accidental movement of the elevator car occupies a large proportion. The unexpected movement of the elevator car includes the abnormal speed of the elevator when it is running and then rushing to the top or squatting at the bottom, and the car moving away from the leveling floor with the door open. Said situation all can bring great potential safety hazard to passenger, relying on the working brake of elevator system itself is unreliable, must arrange the safety braking device independent of elevator system. [0003] After searching the prior art, it is found that the utility model with the application number 201420651752.X and the name of the rope gripper discloses an electromagn...

AI Technical Summary

Problems solved by technology

However, this utility model needs to be reset manually every time. After the compression spring is pressed to a certain position, the lock hook part is used to lock the spring and then triggered by the electromagnetic switch. Because the rope gripper is often installed in the machine room or the hoistway Among them, the steps of locking are very cumbersome, and it is very inconvenient to use

Patent No. CN103434912A discloses a rope gripper for elevator wire ropes, which has a complex trigger structure and transmission reliability needs to be improved; patent No. CN103359576A discloses a reliable rope gripper, which can only realize upward protection, and the self-locking device High standard

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