本文提出了一种新型压力反馈液压冲击器的结构和工作原理。所谓压力反馈控制就是可通过无级调节系统压力来达到无级调节冲击器冲击能的目的，压力高时冲击能大，压力低时冲击能小。该冲击器时针对不同作业对象来调节系统压力，从而实现降低主机（如挖掘机等）装机容量的目的。 This paper presents a new type of pressure feedback hydraulic impactor structure and working principle. The so-called pressure feedback control is through stepless adjustment of system pressure to achieve the purpose of infinitely adjustable impactor impact energy, high pressure impact energy, low pressure impact energy. The impactor for different tasks to adjust the system pressure, so as to reduce the host (such as excavators, etc.) installed capacity purposes.