HYDRAULIC MACHINE Russian patent published in 2013 - IPC F03C2/00 F04C2/63 

FIELD: machine building.

SUBSTANCE: hydraulic machine comprises first and second pumping modules 1, 2, each including annular chamber 3, 4 with inlets and outlets to house two pairs of pistons 7, 8. Each said piston is arranged between pistons of another pair. Pairs of pistons 7, 8 are rigidly coupled with aligned separate axles 9, 10 articulated with shaft 19 by hinges 11, 12 and countershafts 15, 16 so that planes of aligned yokes of adjacent hinges 11, 12 are located at 90 degrees to each other. Countershaft and hinges make cardan shaft of asynchronous gearing. Every axle 9, 10 is engaged by cardan shaft 13, 14 with shaft 15, 16 and gear 17, 18 fitted thereon and engaged with gear 20 of shaft 19. Gears 17, 18 of shafts 15, 16 in modules 1, 2 engage with gear 20 of shaft 19 so that planes of hinge yokes of module 2 are inclined to those of the first module 1 at 45 degrees. Inlets are communicated with common inlet channel. Outlets are communicated with common outlet channel.

EFFECT: uniform delivery if pump or uniform shaft rotation if hydraulic motor.

4 dwg