| 摘要 |
<p>The invention relates to a device for providing a passage in a side wall of a pipe,from the inside of the pipe,said device being provided with a frame (1) and with a drilling means (4) to be rotated by means of a motor (13).The drilling means (4) with its motor (13) has been mounted on a bearing element (7) which is movable relative to the frame (1), transversely to the longitudinal axis of the device.The bearing element (7) is also rotatable about the longitudinal axis of the device . Futher the bearing element (7) has been coupled shiftable to a support plate (22) by means of a setting cylinder (23). The setting cylinder (23) has been arranged beside the drilling means (4) and extends parallel to the axis of rotation of the drilling means (4).Thereby is the arrangement so that the support plate (22) is rotatable about the longitudinal axis of the device with respect to the remainder to the device together with the bearing element (7) and the setting cylinder (23).</p> |
