DRILLING-AND-HOISTING RIG Russian patent published in 2007 - IPC E21B7/02 E21B3/02 

FIELD: drilling rigs characterized by means for land transport, namely rigs for well drilling and communication and power transmission line post installation in wells.

SUBSTANCE: drilling-and-hoisting rig comprises basic chassis with power plant and transmission, as well as boring mast. Swivel, drill rod, drill rod rotator and drill tool are mounted in the boring mast. Pulleys adapted to lift and lower swivel with drill rod are arranged in upper part thereof. Drilling-and-hoisting rig has hook suspension having fixer, single drum winch, pulley system and rope. Drill rod is made as hollow thin-walled pipe having round cross-section. Rotator is aligned with swivel. Upper drill rod end is connected to rotator by means of square shank. Lower movable drill rod part is mounted in guiding means formed as pipe section having diameter exceeding outer rod diameter. Guiding means is installed in lower drilling mast part. Rotator is kinematically connected with basic chassis transmission by means of two-stage chain loop. The first stage of the loop is supported by sprockets. One sprocket is connected to output transmission shaft end. Another one is mounted on remote end of lower elongated beam. The second loop stage is mounted on short beam of long and short beams joined with each other by ends thereof. Upper beam end remote from common rotation axis thereof is connected to horizontal axis of symmetry of receiving rotator shaft in the same way. Each chain loop is provided with toothed chain having sliding hinge. Each chain loop also has tightening roller carried by movable beam.

EFFECT: increased drilling efficiency, simplified structure and operational reliability.

3 cl, 7 dwg