AXIAL-FLOW PLUNGER-TYPE HYDRAULIC MACHINE Russian patent published in 1998 - IPC

FIELD: hydraulic machines. SUBSTANCE: shaft-mounted cylinder block with spring and plungers is coupled with shaft through involute gearing. Plunger shoes are installed in separator and rest on balancing ring placed between inclined washers and riveted to separator through spacing member. Hydrostatic release chamber are provided on supporting surfaces of shoes and balancing ring. Hold-down sphere is installed on cylindrical surface of shaft for contacting balancing ring and rests on its end surface to transmit spring pressure. Balancing ring has central spherical-surface bore and separator is provided with through radial slots whose width equals diameter of shoe neck; these holes function to connect shoe-receiving holes with central bore whose diameter equals diameter of circumference passing through points of intersection of slots over which side surfaces of shoe fillets are moving. EFFECT: improved design. 5 cl, 4 dwg