针对目前国内外液压冲击机械工作参数调节方法的局限性，提出了行程无级调节原理，设计了一种新型的行程无级调节装置，并对该装置进行了数字仿真研究；在此基础上设计了一种基于微机控制的无级调节工作参数的液压冲击机构，论述了其设计原理、结构特点、技术性能和控制策略。

This paper analyses the working parameter adjustment methods for hydraulic impact machine at home and abroad. An adjustment principle with distance shifted continually is first suggested in this paper. A new device with distance shifted continually on the basis of this study is designed, and the computer digital simulation is performed. A hydraulic impact machine which is controlled by computer on the basis of this study is designed. The design principles, structural feature, technical properties and control strategy are also described.