液压冲击机械的无级调节理论及装置研究

Research on Stepless Adjustment Theory and Device of Hydraulic Impact Machine

针对目前各国液压冲击机械工作参数调节方法的局限性,突破传统结构原理,率先提出了变行程无级调节理论。通过协调改变施加于冲击器上的推进力Ft和系统工作压力P这两个控制参数,从而相对改变活塞回程反馈信号孔位置,实现活塞行程的连续可变调节来达到无级控制冲击器输出参数的目的。在此基础上设计了一种新型的变行程无级调节装置,并对该装置进行了数字仿真研究,仿真结果说明了该设计方案的正确性,为进一步研制可变频调能的液压冲击机械提供了理论依据。

Authors analysed the working parameter adjustment methods of home and abroad hydraulic impact machine, and showed their defects. An adjustment principle with variation distance shifted stepless was first suggested in this paper. To achieve stepless control, the working parameter of hydraulic impact machine, the drive force F, and the work pressure of the hydraulic system P were adjusted, the place of comparatively. Authors designed a new device by of this study, and performed a computer digital the piston back haul signal orifice was changed variational distance shifted stepless on the basis simulation, which provided the theoretical basis and technical guidance for the development of the hydraulic impact machine.