Drilling tool, in particular for the alkaline earth - and rock drilling, a method for producing a bore in the ground as well as the drilling assembly

摘要

Drilling tool, in particular for the alkaline earth - and rock drilling, with– a mast element (2),– a drill rod drive (4), which is disposed at the mast element (2) is arranged, and with which a drill string (11, 12) in order to provide a drilling axis (1) can be set in rotation and along the mast element (2) is able to be displaced, and– three clamping devices (21, 22, 23) for the drill column (11, 12), which is axially offset with respect to the mast element (2) are arranged, wherein at least one of the clamping devices (22) for breaking and / or fixing of a threaded connection of the drill rod assembly (11, 12) so as to be pivotable about the drilling axis (1) is designed,characterized by the,– that the three clamping devices (21, 22, 23) for forming a clamping unit to a support (25) are arranged which is longitudinally displaceably on the mast element (2) is mounted, and– that one of the clamping means (23) for clamping a discharge head (40) is designed.