Method and device for producing a borehole in the soil
AssigneeBAUER Maschinen GmbH
InventorGerold Schwab
Life of this patent
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Abstract
The invention relates to a method for producing a borehole in the soil, in which a drill pipe and a conveyor screw arranged inside the drill pipe are set into rotation and introduced into the soil, and in which outcropping soil material is loosened by means of at least one main cutting edge, which is positioned axially in front of the conveyor screw, and is conveyed by means of the conveyor screw in the inside of the drill pipe. In accordance with the invention provision is made for the main cutting edge to be arranged on the drill pipe and to be rotated therewith. The invention further relates to a device for producing a borehole in the soil which can be employed in the method according to the invention.
Claims18
A device for producing a borehole in the soil, comprising:
- a drill pipe having a drill pipe wall and a drill pipe axis,
- a conveyor screw arranged inside the drill pipe and having a cross-sectional surface, and
- at least one main cutting edge arranged on the drill pipe for rotation therewith around the drill pipe axis and positioned axially in front of the conveyor screw for stripping soil material, the at least one main cutting edge extending from the drill pipe wall towards the drill pipe axis, so that the main cutting edge covers at least a considerable part of the cross-sectional surface of the conveyor screw when the at least one main cutting edge is rotated about the drill pipe axis.
Dependencies are inferred from the claim text.