DRILLING MACHINE Russian patent published in 2011 - IPC E21B3/00 

FIELD: mining.

SUBSTANCE: drilling machine includes transport base, mast with guides and upper tie, and movable rotator with guides, which is installed with possibility of axial movement along the mast guides, at that, rotator guides are arranged parallel to longitudinal axis of the mast, drilling column, hoisting winch, rope and movable and stationary rope sheaves, cross beam with clamps for fixation relative to the mast guides, which is arranged below upper tie of mast between movable and stationary rope sheaves, power feed hydraulic cylinders the stocks of which interact with cross beam, and housings are rigidly connected to guides of rotator. Clamps on cross beam are made in the form of the levers acting in the plane of perpendicular longitudinal axis of mast and connected to each other by means of locking hydraulic cylinder of double action, which is arranged in the same plane.

EFFECT: possibility of creating the additional pressure of drilling column during drilling process.

2 cl, 4 dwg