SPINDLE OF RAMMER MOTOR Russian patent published in 2002 - IPC

FIELD: drilling equipment, rotation drilling drives placed in hole. SUBSTANCE: springy member located inside body of device is installed between radial support and comes in the form of two groups of spring rings. Each group includes inner ring fixed on shaft and outer ring anchored in body. Rings are arranged with clearance. Axial support is placed between two groups of spring rings and has ring-shaped passages securing transfer of lubricating liquid between two groups of spring rings. EFFECT: reduced dynamic load on spindle, significant suppression f vibration and, as result, prolonged service life of spindle. 2 cl, 1 dwg