Drilling rig for generating or expanding a ground hole in the ground and method for controlling a feed drive of such a rig

摘要

The invention relates to a drilling rig for generating or expanding a ground hole in the ground (18) and to a method for controlling a feed drive (336, 338) of such a drilling rig (10). A drill pipe (14) connected to a drilling and / or expansion tool (20, 24) is rotated around its longitudinal axis by means of a rotary drive (334) and driven by a feed drive (336, 338) in the direction of its longitudinal axis through the earth (18 ) emotional. The feed force exerted by the feed drive (336, 338) on the drill pipe (14) in the direction of its longitudinal axis is limited to a preset limit value (Fmax).