According to the drive mechanism and the demand of the hydraulic rock drill, the structure character and the designing ways of the impact device, control valve and supporting arm were introduced.

根据水压凿岩机液压传动原理和使用要求，详细介绍了凿岩机中冲击器、操纵阀和支腿的结构特点和设计方法。

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Further more it also investigates the influence of the stiffness of CAM shaft and rock arm supporter and the high order frequency of CAM profile on the dynamic response of valve system.

同时考虑了气门初始间隙以及由此产生的冲击现象，并研究了凸轮轴刚度、摇臂支座刚度及凸轮升程高阶频率对气门运动规律的影响。

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