ROTARY PLANETARY HYDRAULIC MOTOR Russian patent published in 1997 - IPC

FIELD: hydraulic drives for building and mining machines. SUBSTANCE: end covers of the machine are made in the form of circumferentially mated internal and external disks installed to form clearances and adopted to movement relative to each other. The internal disks are made split along plane perpendicular to the longitudinal axis of the hydraulic motor. Mating surfaces of the internal disks are provided with annular channels. The internal disks are mounted to produce relative movement or elastic deformation when working liquid is fed into annular channels. The external disks are mounted on end faces of the rotor and gear. Channels made in the rotor for feeding working media into and discharging it out of every row of working chambers are at least of different cross section . EFFECT: enhanced efficiency. 3 cl, 2 dwg