文档介绍：: .
机械科学与技果载荷谱数据，应用 ANSYS 对工作装置的动臂-底座关节进行
动态接触特性仿真分析。结果表明，工作装置在挖掘过程启动和结束时候存在较大突变载荷，对耳板产生
冲击；接触端面的峰值应力远低于材料许用应力，端面破坏主要是由疲劳破坏造成；接触磨损区域主要集
中于一侧端面外边缘处，伴随着相互之间的黏附，端面的磨损由外向内将逐渐延伸。所得结论，为挖掘机
工作装置关节端面碰撞冲击、磨损分析以及关节接触优化提供依据。
关键词：挖掘机工作装置; 关节摩擦副; 动力学仿真; 载荷谱; 磨损
中图分类号：TH113
Analysis of dynamic contact characteristics of joint friction pair of
excavator working device
Liu Wei1, Wang Zijian1, Chen Xuehui1, Li Hao1, Huang Lei1,
Wang Kechao1, Li Wei1, He Hongbin2
( Jianzhu University, School of Mechanical and Electrical Engineering, Hefei Anhui 230601；
Bolin Advanced Materials Co. Ltd, Hefei, 230601）
Abstract: The joint friction pair of excavator working device is directly related to the operation quality and
product reliability of excavator. Aiming at the problems of joint friction pair ear plate eversion and end face wear
in the use of excavator, the dynamic model of working device is established, and the dynamic simulation is carried
out based on ADAMS to obtain the load spectrum of three main load-bearing joints of working device. At the same
time, it is verified by strain gauge experiment to ensure the correctness of dynamic simulation results. On this basis,
based on the load spectrum of dynamic simulation results, the dynamic contact characteristics of boom base joint
of working device are simulated and analyzed by ANSYS. The results show that the working device has a large
sudden load at the start and end of the excavation process, which has an impact on the ear plate; The failure of joint
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