METHOD OF MUTUAL CONNECTION OF DRILLING STEEL WITH DRILLING COLUMN THROUGH THREADED CONNECTION, LOADING-UNLOADING SYSTEM OF STEEL AND DRILLING UNIT Russian patent published in 2017 - IPC E21B19/16 E21B19/20 E21B19/24 

FIELD: mining.

SUBSTANCE: in the method of the compound of the drill rod to the drill string are aligned in the axial direction of the drill rod from the drill string, by rotating the drill rod and the drill string with respect to each other in the rotational direction of disengagement of the threaded connections, determine the angular position of the drill rod when the thread ends of the rod and drillstring slide on each other, mentioned rotation is stopped for a predetermined period and determining the angular position is performed, and rotation of the drill rod to the drill onny relative to each other in the direction of engagement for connecting threaded connection. The rod loading and unloading system comprises a movable arm with a gripping means, means for rotating the drill rod and drill string with respect to each other about their longitudinal axis in the direction of disengaging the threaded connection, and means for detecting the angular position of the drill rod, wherein the ends of the thread of the drill rod and the drill string slide over each other.

EFFECT: automatic and reliable finding of the thread entrance when connecting drill rods.

17 cl, 7 dwg