Device for producing holes in the ground for anchoring and posts comprises an endless screw having several helix cutouts arranged in a part of the screw helix surfaces arranged behind the crown

摘要

Device for producing holes in the ground comprises an endless screw (11) having several helix cutouts arranged in a part of the screw helix surfaces (1) arranged behind the crown (7). The helix cutouts are directed from the screw helix periphery line (3) in the direction of the core tube. Preferred Features: The cutouts are triangular, rounded and are delimited in an irregular manner. The cutouts are 10-50 mm wide.