DEVICE FOR HANDLING AND STORING OF DRILL PIPES ON DRILLING RIG Russian patent published in 1998 - IPC

FIELD: drilling equipment. SUBSTANCE: this is used with drilling rig having upper drive. It has system of side stepped withdrawal of drill block located on derrick. This system incorporates first mechanism made in the form of first hydraulic cylinder connected with drill block and ensuring its withdrawal from its central position above drill pipe and parallel displacement aside. Drill block is connected with travelling block and is installed on carriage for transportation of equipment units. Carriage is movable along vertical guide members. Included in side withdrawal system is also upper block mounted on derrick and connected with second mechanism made in the form of second hydraulic cylinder. Ropes oncoming on upper block and outcoming from it pass through pivoted joints connected with upper block. Guiding device for ropes is located in upper block zone and is operated by second hydraulic cylinder due to acting on ropes for their displacement in direction of displacing drill block and travelling block. EFFECT: high efficiency. 1 cl, 8 dwg