挖掘式装载机工作机构振动特性分析  

Vibration analysis of excavating-loader's working mechanism

作　　者：何洋 李晓豁 覃创业 孙蓉 HE Yang;LI Xiaohuo;QIN Chuangye;SUN Rong(College of Engineering,Bohai University,Jinzhou 121013,China;Department of Mechanical and Electrical Engineering,Guangdong Institute of Arts and Sciences,Zhanjiang 524400,China)

机构地区：[1]渤海大学工学院,辽宁锦州121013 [2]广东文理职业学院机电工程系,广东湛江524400

出　　处：《渤海大学学报（自然科学版）》2018年第3期255-262,共8页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金项目(No:59774033);省级大学生创新计划指导项目(LN201810167009)

摘　　要：为了搞清挖掘式装载机工作机构的振动特性,根据拉格朗日方程建立了工作机构的动力学模型,借助MATLAB仿真计算获得系统的固有频率和振型.利用Pro/e建立挖掘式装载机工作机构的三维实体模型,结合Ansys/Workbench建立其有限元模型,通过振动响应分析获得了系统的模态振型云图和位移响应云图.结果表明:有限元仿真结果与动力学模型计算值相差无几,且模态频率主要集中在9～75 Hz之间,对系统振动贡献较大频率在30 Hz附近; X向铲斗振动响应最大,Y、Z向响应值较接近,其结论为减小工作机构振动及系统参数优化奠定基础.In order to research vibration characteristics of working mechanism for a excavating - loader. The dynamic model of the working mechanism was established based on Lagrange equation, and the natural frequen- cies and mode shapes of the system were obtained by MATLAB simulation. The three - dimensional model of the working mechanism was established by Pro/e, and its finite element model was established with Ansys/Work- bench, the modal shapes and displacement responses were obtained through vibration response analysis. The conclusion shown ： The modal frequencies were mainly among 9 - 75 Hz. The vibration response of X is the lar- gest, and the response values of Y and Z are close. The conclusion provides the foundation for reducing the vi- bration of working mechanism and optimizing parameters.

关 键 词：挖掘式装载机 振动 有限元 模态分析 

分 类 号：TD421.52[矿业工程—矿山机电]