一、前言乘坐舒适,振动与噪声小,是高速电梯应具备的重要条件。目前高速电梯存在的振动和噪声有:(1) 随着电梯高速化而引起轎廂的水平振动;(2) 电梯起动和减速时引起的轎廂的垂直振动;(3) 机房发出的电动机的交流声以及曳引轮与钢丝绳的摩擦声在井道内传播给轎 First, the preface ride comfort, vibration and noise is small, high-speed elevator should have an important condition. At present, the vibration and noise in the high-speed elevator are as follows: (1) Horizontal vibration of the car caused by the high-speed elevator; (2) Vertical vibration of the car caused by the elevator starting and decelerating; (3) The hum and the frictional sound of the traction sheave and wire rope propagate to the sedan in the hoistway