Mobile drilling rig having a retractable guiding mount or mast
OwnerHeinrich Manteninventor
Life of this patent
Estimating the term…
Abstract
The mobile drilling machine includes a full track or wheeled undercarriage, a drilling mast provided with first guiding tracks extending in the longitudinal direction of the mast for guiding a rotary turntable for drilling pipes and with second guiding tracks, a slider movable on the second guiding tracks, a short supporting arm hinged between the undercarriage and a lower part of the mast, a longer supporting arm hinged at a different point on the undercarriage and connected by a universal joint to the slider and a self-locking driving mechanism provided on the slider to engage a tooth rack or chain mounted on the slider to adjust the inclination of the mast when actuated.
Claims7
A mobile drilling machine comprising a mobile undercarriage;
- a mast for supporting and guiding a drive unit for drilling tools;
- a slider arranged for movement in the longitudinal direction on said mast;
- at least one first arm of a constant length hinged at fixed points relative to said mast and said under carriage;
- at least one single second arm of a constant length hinged at fixed points relative to said slider and said undercarriage;
- the hinge points of said first and second arms on said undercarriage being spaced apart from each other about a constant distance;
- a self-locking power drive arranged between said mast and said slider to displace the same to a desired position on said mast;
- and a hydraulically driven cylinder-and-piston unit hinged at fixed points relative to said first arm and said undercarriage to tilt said mast in cooperation with said self-locking power drive about the corresponding hinge points of said first and second arms.
Dependencies are inferred from the claim text.