大型球磨机静压轴承有限元分析

Finite Element Analysis on the Hydrostatic Bearing of Large-Scale Ball Mill

针对某大型球磨机静压轴承的结构特点及工作特性,建立了球磨机回转体和静压轴承的有限元模型。通过建立中空轴-轴瓦合金的接触、轴瓦-鞍形座的接触,对球磨机回转体与两个轴瓦直接接触模型进行了仿真分析,通过计算得出了中空轴与轴瓦合金之间和轴承衬体与鞍形座之间的接触应力分布规律及变化规律,并对中空轴与轴瓦合金的接触面绘制了轴向和周向的压力变化曲线,从而得出了最大的接触压力,为轴瓦材料的选择提供了理论依据。

Based on the structure characteristics and working performance of the hydrostatic bearing for a large-scale ball mill, a finite element model of the rotary body and hydrostatic bearing isestablished. Through constructing the contact pairs between the hollow shaft and bearing alloy, the bearing bush and saddle seat, the model of the direct contacts among the rotary body and two bearing bushes is carried out simulation analysis. Through calculation, the principles of distribution and changing of contract stress between the contact pairs are obtained. In addition, the axial and circumferential stress curves of the contact surface between the hollow shaft and bearing alloy are drawn, so that the maximal contact pressure is obtained, which provides a theoretical basis for selecting materials of bearing bush.