本文建立了拆包机工作机构的数学模型，得出了多自由度系统在周期冲击作用下的数学解，讨论了固有频率与冲击频率的关系。这将为进一步研究拆包机以及同类设备的动力特性奠定基础，为研制拆包机提供一定的参考和依据，也可供同类设备设计及性能检测时参考 In this paper, the mathematical model of the working mechanism of the unpacking machine is established. The mathematical solution of the multi-degree of freedom system under cyclic impact is obtained. The relationship between the natural frequency and the impact frequency is discussed. This will lay a foundation for further research on the dynamic characteristics of the disassembler and similar equipment, provide some reference and basis for the development of the disassembler, and also provide reference for similar equipment design and performance testing