为获得辊式立磨摇臂的变形位移、应力云图和安全系数,为辊磨机传动装置的关键零部件设计提供科学依据和解决方案,在阐述辊式立磨结构、工作原理和受力分析的基础上,采用基于ANSYS Workbench平台的计算机辅助工程(Computer Aided Engineering,CAE)技术对辊式立磨摇臂进行了有限元分析。对辊式立磨的摇臂和磨辊部件结构进行简化,建立了摇臂和磨辊的三维实体模型,并对其进行了网格划分。定义了摇臂和磨辊部件的材料属性、接触类型、载荷和约束条件,经数值计算后得到摇臂的位移变形、等效应力云图和安全系数。结果表明,上摇臂的最大位移为1.1mm;下摇臂的最大位移为6.61mm,上摇臂的顶部和下摇臂的底端转动半径最大,此外两处受力也较大;上摇臂的最低安全系数为1.36,主要集中在摇臂固定销孔处和附近的小圆角处,下摇臂的最低安全系数为0.485,主要集中在摇臂与摇臂轴配合处。

To get the vertical roller mill radial stress nephogram, deformation displacement and safety coefficient, and provide a scientific and solution basis for designing key parts of the roll grinding machine transmission device. Based on the structure, working principle as well as force analysis of vertical roller mill, the finite element analysis of rocker arms is carried out on ANSYS Workbench platform by using the CAE technology. First of all, the structure of rocker arms and grinding roll components are simplified, then the three-dimensional entity model and meshing model of vertical roller mill both are established, and then meshed. Secondly, the material attribute, contact type, load and constraints of rocker arms and grinding roll components are defined, and the total deformation, equivalent stress and safety factor of rocker arms are obtained by numerical calculation. Results show that, the maximum displacement of the up rocker arm is 1.1 mm, and the maximal displacement of lower rocker arm is 6.61 mm. The rotating radii are the largest both on the top of the up rocker arm and under the bottom of lower rocker arm, and stress are bigger in these two places. The minimum safety factor of the up rocker arm is 1.36, mainly concentrated in the fixed pin hole on a rocker and near the small fillet, and the minimum safety factor of the lower rocker arm is 0.485, mainly concentrated in joint place of the rocker arm and rocker arm shaft.