立式辊磨机摇臂的动力学分析研究  

The Dynamics Analysis on Rocker Arm of Vertical Roller Mill

作　　者：刘青 LIU Qing(Department of Automotive and Mechanical Engineering,Anhui Communications Vocational&Technical College,Hefei,Anhui 230051,China)

机构地区：[1]安徽交通职业技术学院汽车与机械工程系,安徽合肥230051

出　　处：《九江学院学报（自然科学版）》2024年第3期55-58,共4页Journal of Jiujiang University：Natural Science Edition

基　　金：2023年度安徽省高校自然科学研究项目(编号2023AH052971)的研究成果之一。

摘　　要：摇臂是立式矿渣磨的关键受力部件,文章简要介绍了磨辊磨盘系统的结构和工作中的受力情况。在此基础上,用绘图软件绘制出摇臂的三维模型,经简化处理后导入有限元分析软件中,建立摇臂有限元模型。接着对其进行模态分析,得到摇臂的前六阶固有频率及振型,磨辊和磨盘二者的运动频率均远远小于摇臂固有频率。为了解结构各阶频率的响应情况,将摇臂下端液压拉力作为激振力,对摇臂进行谐响应分析,模拟摇臂受力数值出现波动时的工况,得到系统的两个共振频率,共振频率分别对应于摇臂的一阶和六阶固有频率。研究结果对提高立式辊磨机的动态性能及进一步优化有一定理论参考意义。Taking the rocker arm which was the critical force component of slag vertical roller mill as study object,briefly introduced the structure and stress at work of grinder roll and abbrasive wheel system.On this basis,construct the 3D model of rocker arm by drawing software,after simplified processing,import it into the finite element software to obtain finite element model of rocker arm.The modal analysis on rocker arm was made,and the first six order natural frequency and corresponding mode of vibration were obtained,the motion frequency of grinder roll and abbrasive wheel were far less than the natural frequency of rocker arm.To understand the response of each frequency,taking the hydraulic pressure on the bottom of rocker arm as excitation force,making the harmonic response analysis,simulate the working condition when the force value of the rocker arm fluctuates.The two resonance frequency get from the harmonic response analysis correspond to the first and sixth order natural frequency of rocker arm.The result of study presents some theoretical reference for improving dynamics performance of vertical roller mill and its further optimization.

关 键 词：立式辊磨机 摇臂 模态分析 谐响应分析 

分 类 号：G642.0[文化科学—高等教育学]