Steerable boring machine
AssigneeTracto-Technik Paul Schmidt Spezialmaschinen
InventorFranz-Josef Puttmann
Life of this patent
Estimating the term…
Abstract
With a boring machine having a multistrand rod assembly (3) for producing boreholes in the ground, comprising a rotatable inner rod (29), an outer rod (19), at least one steering and digging tool (5; 33, 35, 36) driven by the inner rod and having an axis of rotation (22) inclined at an angle of for example 90.degree. to the axis of the rod (23), and a linear drive for the rod assembly (3, 19, 20), it is possible to perform both straight-ahead boring and, if only the steering and digging tool is driven, curve boring.
Claims18
A boring machine for the production of bore holes in the ground, comprising:
- a multi-strand rod assembly comprising a rotatable inner member and a rotatable outer member;
- a steering and digging tool carried by the rod assembly and driven by the rotatable inner member;
- a first drive system providing rotational and linear movement for the rotatable outer member;
- and
- a second drive system, for rotating the rotatable inner member independently of the rotation of the outer member,
- whereby steering of the boring machine is effected by varying the driving of the rotatable inner member.
A method of directed boring of a bore hole in the ground, comprising:
- boring a bore hole with a boring machine comprising a multi-strand rod assembly comprising a rotatable inner member and a rotatable outer member;
- a steering and digging tool carried by the rod assembly and driven by the rotatable inner member;
- a first drive system providing rotational and linear movement for the rotatable outer member;
- and a second drive system, for rotating the rotatable inner member independently of the rotation of the outer member;
- and
- adjusting rotation of the rotatable inner member to vary a digging power of the steering and digging tool to change a direction of boring.
Dependencies are inferred from the claim text.