SELF-MOVING DRILLING RIG Russian patent published in 2008 - IPC E21B7/02 

FIELD: mining, particularly drilling rigs for inclined expendable and technical well drilling in pit ledges and in confined building area.

SUBSTANCE: drilling rig comprises fixed platform carried by vehicle and pivotally connected with support frame, which may rotate in vertical plane passing through longitudinal vehicle axis by means of hydraulic jack. Drilling rig also has pole stem moving in vertical plane along rotary carriage. The carriage is secured to support frame axis and may rotate relatively the frame through angle of not more than 20° in opposite directions in plane transversal to vertical support frame rotation plane with the use of hydraulic jack installed on rotary frame. Rotary carriage has pole stem position fixation unit. The fixation unit comprises fixed toothed member secured to support frame axis and movable toothed member brought into engagement with fixed one. The movable toothed member is installed on rotary carriage axis and may be shifted from engagement with fixed toothed member to change pole stem rotation angle.

EFFECT: extended field of drilling rig usage.

3 cl, 3 dwg