Apparatus for rock drill
    1.
    发明授权
    Apparatus for rock drill 失效
    凿钻装置

    公开(公告)号:US4883135A

    公开(公告)日:1989-11-28

    申请号:US235936

    申请日:1988-08-24

    IPC分类号: E21B10/44 E21B10/56 E21B10/58

    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 。