DRILLING RIG Russian patent published in 2008 - IPC E21B7/00 

FIELD: mining.

SUBSTANCE: invention relates to drilling technique and can be used in construction for drilling round wells for reinforced concrete supports, built-in-place piles etc as well as for drilling inclined and horizontal boreholes of medium length. The drilling rig contains a transport platform with a stowed drilling mast with working tools and a gear for lifting and installation of the mast in working position, which is located between the transport platform and the drilling mast and equipped with the positioning carriage fixed to the drilling mast so that it can perform reciprocal movements. The gear also contains a hydraulic rotor fixed to the transport platform to provide angular reversible turning, a movable cradle with arms fixed on the revolving hydraulic rotor with a possibility of reciprocal movement relative to the latter, an axis link, one end of which is fixed on the movable cradle and the other on the movable rotor, mounted on the carriage, hydraulic cylinders of adjustable length, the first of them being installed with one end on the hydraulic rotor and the other one - on the end of the movable cradle near the axis link. The second hydraulic cylinder is installed with one end on the carriage and the other one - on the movable rotor. The ends of the third and the fourth hydraulic cylinders are mounted on the arms of the movable cradle and the other ends- on the carriage. The invention provides reduction of weight and overall dimensions of the drilling rig and reduction of time required for installation of the drilling mast in working position.

EFFECT: reduction of weight and overall dimensions of the drilling rig and reduction of time required for installation of the drilling mast in working position.

5 cl, 4 dwg