Device for advancing drillings in the ground
AssigneeWirth Maschinen-und Bohrgerate-Fabrik GmbH
InventorMichael Mohrmann
Life of this patent
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Abstract
A device for driving boreholes in the ground, having a rotationally driven main shaft with a shaft journal whose axis (B) forms an acute angle with respect to the axis (A) of the main shaft. A drill head is mounted such that it can rotate about the axis (B) of the shaft journal and has a circumferential region which runs on a complementary circumferential region, wherein the complementary circumferential region can be set rotating.
Claims16
A device for driving boreholes in the ground, having a rotationally driven main shaft (12) disposed in a housing (15), comprising a shaft journal (11) whose axis (B) forms an acute angle (w) with respect to the axis (A) of the main shaft (12), and having a drill head (1) which is mounted such that the drill head can rotate about the axis (B) of the shaft journal (11) and has a circumferential region (18) which runs on a complementary circumferential region (19) so that the drill head is shifted in rotational speed reciprocal to the main shaft, wherein the complementary circumferential region (19) is rotatable relative to the housing (15).
Dependencies are inferred from the claim text.