Rotary drive assembly for a drill rod
AssigneeEURODRILL GmbH
InventorsHendrik Uelhoff, Andreas Pikowski
Life of this patent
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Abstract
The invention relates to a rotary drive assembly for a drill rod having an outer tube and an inner rod extending at least in sections inside the outer tube, comprising a first gear unit having at least a first drive unit for driving the inner rod in a rotating manner and a second gear unit, which is offset to the said first gear unit in the longitudinal direction of the drill rod and has at least a second drive unit for driving the outer tube in a rotating manner. In accordance with the invention provision is made for the second drive unit to be spaced from the second gear unit and for the second drive unit to be arranged adjacent to the first drive unit on the first gear unit.
Claims10
Rotary drive assembly for a drill rod having an outer tube and an inner rod extending at least in sections inside the outer tube, in particular for double-head or superposed drilling, comprising
- a first gear unit having at least a first drive unit for driving the inner rod in a rotating manner and
- a second gear unit, which is offset to the said first gear unit in the longitudinal direction of the drill rod and has at least a second drive unit for driving the outer tube in a rotating manner,
- wherein
- the second drive unit is spaced from the second gear unit and
- the second drive unit is arranged adjacent to the first drive unit on the first gear unit.
Method for producing a borehole, in which a drill rod having an outer tube and an inner rod extending at least in sections inside the outer tube is set into rotation and displaced axially by means of a rotary drive assembly according to any one of the preceding claims.
Dependencies are inferred from the claim text.