CLG908D型挖掘机履带板及驱动链轮有限元分析  

Finite element analysis on crawler plate and driving sprocket of CLG908D excavator

作　　者：谢国进[1] XIE Guojin(School of Mechanical&Automotive Engineering,Guangxi University of Science&Technology,Liuzhou 545616,Guangxi,China)

机构地区：[1]广西科技大学机械与汽车工程学院,广西柳州545616

出　　处：《矿山机械》2022年第2期16-20,共5页Mining & Processing Equipment

基　　金：广西科技开发计划资助项目(桂科能1598021-2)。

摘　　要：以CLG908D履带式挖掘机性能参数为依据,使用SolidWorks软件对行走机构的关键部件履带板及驱动链轮进行了三维建模,介绍了在挖掘机转弯工况下履带板载荷及行走液压马达极限转矩的计算方法,并在ANSYS Workbench软件中进行了有限元分析,校核了履带板和驱动链轮的强度。仿真结果表明:在转弯工况下,履带板底部施加的回转力矩大小和方向对履带板最大应力的大小及位置影响较大;履带板销孔或者中部通孔圆角边缘处以及驱动链轮齿根处容易出现应力最大,最大值小于选用材料的屈服强度,安全系数均超过2.0,满足结构设计要求。该研究为履带板及驱动链轮的设计及结构优化提供了一种方法。Based on the performance parameters of CLG908D crawler excavator,3D modeling of the key components of the walking mechanism such as the crawler plate and the driving sprocket was carried out by SolidWorks software.And then,the calculation method for the loads on the crawler plate and the limit torque of the walking hydraulic motor in turning mode of the excavator was introduced,and the finite element analysis was conducted in ANSYS Workbench software to check the strength of the crawler plate and the driving sprocket.Simulation results showed:in turning mode,the magnitude and direction of the rotary torque exerted on the bottom of the crawler plate had great influence on the magnitude and location of the maximum stress;the maximum stress easily appeared at the round edge of the pin hole and the middle through hole of the crawler plate as well as the tooth root of the driving sprocket,the maximum values were less than the yield strength of the selected material,and the safety coefficient was more than 2.0,which met the structural design requirements.The research offered a method for the design and structural optimization of the crawler plate and the driving sprocket.

关 键 词：挖掘机 履带行走机构 履带板 驱动链轮 有限元分析 强度 

分 类 号：TD422.2[矿业工程—矿山机电]