SPINDLE FOR DOWNHOLE MOTOR Russian patent published in 2004 - IPC

FIELD: well boring technology.

SUBSTANCE: spindle has body with nipple nut, hollow shaft with inlet aperture in connecting half-coupling, upper and lower radial sliding supports, hydraulically connected to each other by peripheral channels, upper and lower compactions mounted between radial sliding supports, butterfly governor, radial thrust roller bearings and oiling chamber with inner and outer iron rings, adjusting members in the body and on hollow shaft. Adjusting elements are made in form of shock-absorbers, for example, disk spring or cushioning spring, some of which with most rigidity are mounted in upper portion of body above radial thrust roller bearings, and other with lesser rigidity - on hollow shaft under radial thrust roller bearings or under lower compaction, placed in oiling chamber in form of moveable toroidal hollow ring. Peripheral channels are made inside outer iron rings of compactions, radial thrust roller bearings and oiling chamber. Butterfly governor is mounted above upper radial sliding support.

EFFECT: higher reliability and durability of spindle operation.

7 cl, 6 dwg