摘要
    电梯的曳引机主要是由曳引绳、电动机、减速器、曳引轮、制动器和联轴器组成。根据电梯运行的速度和载荷来选用电动机和制动器。曳引绳的设计，首先选用一种曳引绳的绕法，再由它的受力情况来选择曳引绳的数量和截面积。减速器是设计的主体部分，要根据电动机的转速、电梯的运行速度、曳引轮的直径等参数设计减速器。电梯是利用曳引钢丝绳与曳引轮缘上绳槽的摩擦力传递动力，所以必须设计表面摩擦系数大且耐磨的曳引轮。选用刚性联轴器，保证传递的动力，但要求两轴的对中度较高。
关键词 货运电梯；曳引机；组成；设计
Abstract
Elevator traction machine mainly by the traction rope, motor, reducer, traction wheels, brakes and coupling components. The operating speed of the elevator and load the selection of motor and brake. The design of the traction rope, first choose a traction rope around the law, then the forces it to choose the number of the traction rope and cross-sectional area. Reducer is the main part of the design, according to motor speed, lift speed, traction wheel gear design parameters such as diameter. Lift is the use of traction on the rim of the traction rope friction groove transmit power, it must design and wear-resistant surface friction coefficient of the traction wheel. Rigid coupling used to ensure the transfer of power, but requires moderately high on both axes.
Keywords  Freight elevator  Traction machine  composition  design 
目       录