Elevator traction mechanism

Abstract

The invention discloses an elevator traction mechanism. The elevator traction mechanism comprises an elevator control system for controlling elevator running, a traction machine, a traction wheel connected with the traction machine, and traction ropes wound around the traction wheel. One ends of the traction ropes are connected with an elevator car, the other ends of the traction ropes are connected with counter weights, the traction wheel is coaxially connected with a worm gear, a worm is engaged with the worm gear, and accordingly a traction wheel locking mechanism is formed. The worm is connected with a protection motor, and the protection motor and the traction machine adopt servo motors. A synchronous controller controls the rotation speed of the traction machine and the protection motor according to the transmission ratio of the worm and the worm gear, and the rotation speed ratio of the worm and the worm gear and the transmission ratio of the worm and the worm gear are kept synchronous. When the load of the protection motor exceeds the maximum set value, the elevator control system cuts off a power source of the protection motor and the traction machine. By means of the elevator traction mechanism, reliable traction wheel braking can be achieved when the elevator system is powered off or breaks down, and safety accidents of elevator car roof rushing or bottom squatting are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of elevator manufacturing, in particular to an elevator traction mechanism with high safety. Background technique [0002] In high-rise buildings, the elevator is a necessary accessory equipment, which can bring great convenience to the occupants. At present, with the development of the economy, a large number of middle and high-income groups have emerged, and the demand for villas is also increasing. Correspondingly, home elevators suitable for villa buildings have also become popular. The elevator mainly includes a shaft, a car that can be lifted and lowered in the shaft, and a drive mechanism for driving the car to go up and down. The traction machine is connected to the traction wheel, and a traction rope is wound around the traction wheel. One end of the traction rope is connected to the car, and the other end is connected to a counterweight that can be lifted and lowered in the hoistway, so as to bala...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of difficult reliable braking and low safety in the existing elevator traction mechanism, and provide an elevator traction mechanism, which can realize the traction sheave braking when the elevator system fails or fails. The reliable braking can effectively avoid the safety accident of the car jumping to the top or squatting at the bottom

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