DUPLEX AXIAL-PISTON HYDRAULIC MACHINE Russian patent published in 1994 - IPC

FIELD: positive-displacement hydraulic machines. SUBSTANCE: mounted in housing and fastening flange of hydraulic machine is input shaft with drive gear of transfer reduction gear. Drive gear is engageable with driven gears of reduction gear which transmit torque to pumping units. Each of pumping units has inclined cylinder block located on side of fastening flange and distributor. Distributor ports are in communication with suction chamber of hydraulic machine. Booster pump impeller is mounted on the drive shaft in fastening flange chamber. Fastening flange chamber and suction chamber of the hydraulic machine are brought in communication. Booster pump impeller rotating simultaneously with drive shaft creates excessive pressure in suction chamber of hydraulic machine. Working fluid under this pressure is first sucked in chambers of inclined hydraulic cylinder blocks and then it is compressed and delivered under pressure to the pressure mains of hydraulic machine. Each cylinder block has regulator of angle of inclination of block mounted in fastening flange. EFFECT: enhanced reliability. 1 dwg