| 摘要 |
A tool for drilling holes through ice has a central drill rod ( 2 ) having a spiral ( 5 ) for lifting crushed ice formed by the drilling, a carrier ( 6 ) attached to one end of the drill rod ( 2 ) and being fixed to at least one cutting blade ( 12 ) extending substantially radially with respect the drill rod ( 2 ) and having a cutting edge ( 13 ) for cutting and thereby drilling into the ice upon rotation of the drill rod ( 2 ). A member is fixed with respect to the carrier ( 6 ) for support on the ice through a surface ( 15 ) at a distance in the direction of the axis of the drill rod ( 2 ) in the drilling direction behind the cutting edge of the cutting blade ( 12 ) for defining the cutting depth when drilling by the tool. |
