Bent-axis axial-piston hydraulic machine

A bent-axis axial-piston hydraulic machine that comprises:

• a cylinder block that comprises a plurality of cylinder assemblies, each one with at least one cylinder and a cooperating piston that define between them a variable-volume chamber, said at least one cylinder assembly being movable circumferentially about a first rotation axis,
• in which in one complete rotation of a cylinder assembly about the rotation axis, the following are defined:
• an extension semi-circumference, in which the piston follows an extension stroke from a lower stroke limit position to an upper stroke limit position and
• a return semi-circumference, in which the piston follows a return stroke from an upper stroke limit position to a lower stroke limit position,
• a transmission shaft which is functionally associated with said cylinder block and which can rotate about a transmission axis incident on said rotation axis and
• a distributor which in turn comprises:
• a first fluid distribution circuit at a first pressure, which comprises a first distribution arc which is configured to be placed in fluid communication with the variable-volume chamber of at least one cylinder assembly during a passage of said cylinder assembly at the first distribution arc, and
• a second fluid distribution circuit at a second pressure, different from the first pressure, which comprises a second distribution arc which is configured to be placed in fluid communication with the variable-volume chamber of at least one cylinder assembly during a passage of said cylinder assembly at the second distribution arc,
• in which the first and the second distribution arc extend about a central axis which coincides with the rotation axis
• wherein the machine comprises an angular offsetting device which is associated with said distributor in order to rotate the first and the second distribution circuit about said rotation axis, so as to mutually angularly offset said extension and return semi-circumferences with respect to said first and second distribution arc, the first and the second distribution circuit being configured to be stably connected respectively to a first operating line of fluid at the first pressure and to a second operating line of fluid at the second pressure.