| 摘要 |
A drilling device with a telescopic arm (2) is described and comprises a drilling member (3) and a drive means (4) with rotor and stator portions for rotating the drilling member (3). The rotor portion of the drive means (4) is connected directly to the drilling member (3) and the stator portion of the drive means (4) is fixed firmly to the telescopic arm (2) so that the drilling member (3) is driven with a rotary motion relative to the arm (2). |
