导轨激励下电梯水平振动的动力学建模

摘要

高速电梯在运行过程中,除了导轮与导轨间的接触刚度随接触载荷的变化而变化外,导轨本身的刚度也由于导轮与导轨接触位置的变化而变化,因此导轮与导轨的界面接触刚度是个复杂的时变量.通过研究导轮与导轨之间的实时界面刚度变化,建立轿厢的水平振动模型,并将导轨的不平度作为激励输入,对轿厢的水平振动进行研究.%When an elevator is in operation, the contact stiffness between the guide wheel and the rail changes with the contact load and the bulk stiffness of the guide rail changes with the car position. By considering the time varying interface stiffness between the guide wheel and the rail, a horizontal vibration model of high-speed elevator excited with the surface irregularity of the guild rail is proposed. Simulations with different surface irregularity excitations are performed, and the resulting horizontal vibration is analyzed.