Receptacle for tubular drilling tools having different diameters
AssigneeAbf Bohrtechnik GmbH & Co. KG
InventorRainer Miesen
Life of this patent
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Abstract
The invention relates to a tool holder on a drill transmission for tubular drilling tools having at least two different diameters, wherein the holder is equipped with a hollow-cylindrical recess and with at least one radially oriented locking bolt which is installed in the wall of the hollow-cylindrical recess and which engages in a corresponding opening in the drilling tool, wherein there is at least one further hollow-cylindrical recess which is complementary to one of the different drilling tools.
Claims5
A device on a motor-driven drilling gearing for supporting tubular drilling tools for introducing bore holes for foundation piers comprising:
- a tool receptacle including a first hollow cylindrical recess having a first internal diameter and being complementary to drilling tools of a first exterior dimension, and a second hollow cylindrical recess having a second internal diameter and being complementary to drilling tools of a second exterior dimension;
- and
- at least one radially oriented locking bolt installed in a wall of the tool receptacle that is engageable in an opening of a drilling tool;
- wherein the first internal diameter of the first hollow cylindrical recess is larger than the second internal diameter of the second hollow cylindrical recess;
- and
- wherein the first and second hollow cylindrical recesses have, at a respective upper end, a bulge or ridge protruding into their respective interiors, said buldge or ridge defining a plane that lies perpendicular to a longitudinal axis of the drilling tool, and said buldge or ridge serving to support a drilling tool inserted into the respective recess against forces acting on the drilling tool in the direction of said longitudinal axis.
A device on a drilling gearing for supporting tubular drilling tools comprising:
- a tool receptacle including a first hollow cylindrical recess having a first internal diameter and being complementary to drilling tools of a first exterior dimension, and a second hollow cylindrical recess having a second internal diameter and being complementary to drilling tools of a second exterior dimension;
- and
- at least one radially oriented locking bolt installed in a wall of the tool receptacle that is engageable in an opening of a drilling tool;
- wherein the first internal diameter of the first hollow cylindrical recess is larger than the second internal diameter of the second hollow cylindrical recess,
- and wherein the device includes a spacer ring in the first hollow cylindrical recess engaging an interior wall of the first hollow cylindrical recess, the spacer ring including passages for the at least one radially oriented locking bolt, an interior of the spacer ring forming the second hollow cylindrical recess;
- and
- each of the at least one radially extending locking bolt projects through one of the passages of the spacer ring and into an opening of a drilling tool held in the second hollow cylindrical recess.
Dependencies are inferred from the claim text.