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以某型液压挖掘机工作装置为研究对象,将铲斗和地面看作固定连接,建立闭链机构模型,利用变截面压杆稳定性计算的等效刚度法将动臂油缸等效成等截面杆,根据机构弹性动力学对挖掘瞬间的挖掘机工作装置进行动力学建模,用MATLAB编写程序分析其弹性动力学特性,为挖掘机的冲击响应分析和结构优化设计奠定力学基础。
Taking a working device of a hydraulic excavator as the research object, the bucket and the ground are regarded as a fixed connection, a closed-chain mechanism model is established, and the equivalent cylinder cylinder is equivalently isostated by the equivalent stiffness method of the variable section stability calculation According to the mechanism of elastic dynamics, excavator working device of instantaneous excavation was modeled dynamically. The program was analyzed by MATLAB to analyze the dynamic characteristics of the excavator, which laid the foundation of mechanics for the impact response analysis and structural optimization design of the excavator.