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目前,在中硬和坚硬岩石内凿岩,广泛使用风动凿岩机。因为它结构简单,操作方便,维修量小。但它的缺点是噪音大,喷射油雾和水雾,影响工作面视线等。 苏联和其他国家,对液压凿岩机进行改进,使它比风动凿岩机劳动生产率高2～2.5倍,噪音大大降低,劳动条件得到改善。但液压凿岩机的成本大大超过风动凿岩机,同时还要为这种凿岩机建立复杂的动力系统,
At present, rock drills are used extensively in hard and hard rocks and are widely used. Because of its simple structure, easy operation, small maintenance. But its disadvantage is noise, jet mist and water mist, affecting the face line of sight. The Soviet Union and other countries improved hydraulic rock drills to make them 2 to 2.5 times more productive than pneumatic rock drills, with significantly reduced noise and improved working conditions. However, the cost of hydraulic rock drills is much higher than that of pneumatic rock drills, and at the same time, it is necessary to establish complex dynamical systems for such rock drills,