ROLLER FOR DEVELOPMENT OF WELLS IN SOIL Russian patent published in 2010 - IPC E02F5/18 

FIELD: construction.

SUBSTANCE: invention is related to construction equipment, namely to devices for development of wells in soil by method of rolling. Roller for development of wells in soil comprises master shaft, on which eccentric bushes are fixed, conical runners, longitudinal axes of which are arranged at the angle to longitudinal axis of master shaft, rings, every of which is installed on rolling bearings that perceive radial loads from runners. Rings are arranged on outer support surface of spherical shape, which interacts with inner support surface of runner spherical shape. Each runner is provided with annular grooves on its outer surface, longitudinal axes of which are perpendicular to longitudinal axis of runner. Eccentric bushes of two neighbouring runners are arranged as a whole with flange installed in the middle of neighbouring runners and interacting with end surfaces of neighbouring runners rings. End sliding bearings are installed between end surfaces of rings are flange, which are simultaneously end seals perceiving axial loads from runners and are made of antifriction material.

EFFECT: improved durability of operation, and also prevention of soil and moisture ingress into bearing units of roller.

2 cl, 2 dwg