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公开(公告)号:US4883135A
公开(公告)日:1989-11-28
申请号:US235936
申请日:1988-08-24
申请人: Bernhard Moser , Wolfang Peetz , Hermann Hugger
发明人: Bernhard Moser , Wolfang Peetz , Hermann Hugger
CPC分类号: E21B10/445 , E21B10/56 , E21B10/58 , Y10T408/9097
摘要: A rock drill for rotary and percussive stressing exhibits equally good or improved transport characteristics of driling dust for a smaller transport groove as compared with prior rock drills. In order to achieve this, a main transport groove having longitudinal profiles is formed, with an interrupted secondary transport groove integrated in the main transport groove, the transport ribs of which exhibit a greater angle of twist than the angle of twist of the main transport groove.
摘要翻译: 用于旋转和冲击应力的凿岩机与以前的凿岩机相比,表现出与较小输送槽相同的良好或改善的输送特性。 为了实现这一点,形成具有纵向轮廓的主输送槽,其中一个中间的二次输送槽整体集成在主输送槽中,其输送肋的扭转角度大于主输送槽的扭转角度 。