Traction device with manual rescue mechanism

Abstract

The invention discloses a traction device with a manual rescue mechanism. The traction device with the manual rescue mechanism comprises an elevator control system for controlling the operation of anelevator, a traction machine, a traction wheel connected to the traction machine, and a hoisting rope wound on the traction wheel, wherein one end of the hoisting rope is connected to a lift car; theother end of the hoisting rope is connected to a counter weight; the traction wheel is coaxially connected to a worm wheel; a worm is meshed with the worm wheel to form a locking mechanism of the traction wheel; the worm is connected to a protection motor; the protection motor and the traction machine are all made of servo motors; a synchronous controller controls the rotating speeds of the traction machine and the protection motor according to the transmission ratio of the worm to the worm wheel, so that the speed ratio of the worm to the worm wheel is synchronized with the transmission ratioof the worm to the worm wheel; and when the load of the protection motor exceeds the maximum set value, the elevator control system cuts off power supplies of the protection motor and the traction machine. When an elevator system is powered off or breaks down, the traction device with the manual rescue mechanism can realize the reliable braking of the traction wheel, and effectively avoids the safety accident of car topping or bottoming.

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 existing in the existing elevator traction mechanism, and to provide a traction device with a manual rescue mechanism, which can be used when the elevator system fails or fails. Realize the reliable braking of the traction sheave at the same time, effectively avoiding the safety accident of the car jumping to the top or squatting at the bottom

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