大型多支承回转窑动力学建模与分析

DYNAMIC MODELING AND ANALYSIS OF LARGE-SCALE ROTARY KILN WITH MULTI-SUPPORTING

针对回转窑运行轴线变化所引起筒体发生弯曲振动,推导了托轮系统各向异性等效刚度计算方程,发展了传递矩阵法来建立回转窑的动力学模型,并进行实例求解分析,从理论上阐明了常用的轴线检测方法存在动态误差的本质缺陷,为计算筒体动应力和轴线检测动态误差提供了基础方程.

Rotary kiln is a key equipment in the production of metals, cement and refractory materials. For studying bending vibration of its body system related with its axis movement, the method of transfer matrix is developed to set up the body system＇s dynamical model with the anisotropy equivalent stiffness equation of the wheel-bearing system. An example is given to illustrate why there are dynamical errors in the common axis measurement methods. The transfer matrix model provides a basic equation for computing dynamical stresses of roller and dynamical errors in the axis measurement.