论述了液压挖掘机工作装置的结构特点;分析了工作装置结构研究的现状和存在的问题;提出了一个较为系统、全面的处理方法;解决了机械结构中常遇到的铰点传力问题,并进行了典型结构的数值分析;最后归纳了几点结论。 The structure features of the hydraulic excavator working device are discussed. The status quo of the research on the structure of the working device and the existing problems are analyzed. A more systematic and comprehensive processing method is proposed; the problem of the transfer force of the hinge point often encountered in the mechanical structure is solved. Numerical analysis of the typical structure was performed; several conclusions were concluded at the end.