What is an elevator traction machine
An elevator traction machine is the power equipment of an elevator, also known as a lift main engine. Its function is to transport and transmit power to make the elevator run. It consists of a motor, brake, coupling, gearbox, traction wheel, frame and guide wheel, and subsidiary disc rider wheel. The guide wheel is generally installed in the frame or on the load-bearing beam under the frame. Some of the disc rider wheels are fixed on the motor shaft, and some are usually hung on the nearby wall, and then set on the motor shaft when in use.
The working principle of elevator traction machines
The electric motor installed in the machine room, together with the gearbox and brake, is the driving force of the traction elevator. The traction wire rope is connected to the car through the traction sheave at one end and to the counterweight at the other. In order to make the car and the counterweight in the shaft run along the guide rails in the shaft without rubbing against each other, a guide wheel is placed on the traction machine to separate the two. The gravity of the car and the counterweight device cause the traction wire rope to be pressed against the groove of the traction sheave to generate friction. In this way, the rotation of the motor drives the traction wheel to drive the wire rope and drag the car and counterweight into relative movement. In other words, the car rises and the counterweight descends; the counterweight rises and the car descends. Thus, the car runs up and down along the guide rails in the shaft, and the elevator performs vertical transport tasks. The relative movement of the car and the counterweight is achieved by the friction between the traction rope and the traction wheel. This force is called traction force or driving force. The load on the elevator car and the position of the car as well as the direction of travel change during operation.
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