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冲击回转式凿岩是以机械法破碎矿岩的进一步发展,它可大大地提高凿岩速度。近年来苏联作了专门的研究,因而确定了最合理的冲击回转式凿岩钻机的速度,推荐了适合苏联矿山条件[1—6]的钻具结构和钻机参数。并以此研究为基础,制成几种冲击回转式钻机。苏联中央科学研究院地下矿建研究所设计的、并由库茲湼茨克机器制造厂制造的Бy-1和CБy-2型钻机,带有单活塞风动冲击机构,其每分钟冲击次数达到了3200次。但是,具有这样冲击频率的冲击机构,在坚硬的矿岩中不
Impact rotary rock drilling is the further development of mechanical rock broken rock, it can greatly improve the rock drilling speed. In recent years, the Soviet Union made a special study, thus determining the most reasonable impact rotary drilling rig speed, recommended for the Soviet mining conditions [1-6] the drill structure and rig parameters. Based on this research, several impact rotary drilling rigs were manufactured. The Бy-1 and CБy-2 rigs, designed by the Institute of Underground Mining and Construction at the Soviet Institute of Central Academy of Sciences and manufactured by the Kuznetsk Machine Works, have a single-piston pneumatic impact mechanism with an impact per minute of up to 3200 times. However, impact mechanisms with such an impact frequency are not found in hard rock