| 摘要 |
A hydraulic machine (1) is shown, in particular a hydraulic pressure exchanger, comprising a drum (2) rotatable about an axis, a front plate arrangement having a front plate (7) and a pressure shoe (8), said drum (2) comprising a plurality of working cylinders (4), each working cylinder (4) having a front opening, during rotation of this drum (2), said front opening sliding over said pressure shoe (8) along a path, said pressure shoe (8) having at least two kidney-shaped openings, said kidney-shaped openings being arranged in said path. A hydraulic machine should be operated with low noise. To this end said pressure shoe (8) is arranged between said drum (2) and said front plate (7) and comprises at least a pressure cylinder (21) arranged between two neighboring kidney-shaped openings, a piston (22) being arranged in said pressure cylinder (21), said piston (22) resting against said front plate (7), said pressure cylinder (21) being connected with a supply opening (24) in a side of the pressure shoe (8) opposite said front plate (7), said opening (24) at least partly overlapping said path. |
