Patent ID: 9447686
Filing Date: 2016-09-20
CPC Classification: F01B,F04B,F05C

Claim Text:
1. A dual axial piston machine, comprising: a pump housing that includes a central part and that defines a double-cup shape; a first cylinder barrel and a second cylinder barrel mounted in the pump housing and having a multiplicity of pistons, each delimiting a working space and being supported on an adjustable swashplate; a first control disk arranged at a first side of the central part of the pump housing and configured to alternately connect the working space of the first cylinder barrel to a first low-pressure and a first high-pressure duct; a second control disk arranged at a second side of the central part of the pump housing and configured to alternatingly connect the working space of the second cylinder barrel to a second low-pressure and second high-pressure duct; a drive shaft configured to connect to the first cylinder barrel and second cylinder barrel to rotate conjointly; and a first insert ring, on which the drive shaft is mounted and in which a first high-pressure duct section is formed, the first insert ring inserted into the first side of the central part of the pump housing, wherein the first high-pressure duct section defines a first orifice region that is on a side of the first insert ring facing towards the first control-disk, and that extends in an at least substantially axial direction with respect to the drive shaft, and a second orifice region that is on a side of the first insert ring facing the first high-pressure duct, and that extends in an at least substantially radial direction with respect to the drive shaft; and a second insert ring, on which the drive shaft is mounted and in which a second high-pressure duct section is formed, the second insert ring inserted into the second side of the central part of the pump housing, wherein the second high-pressure duct section defines a third orifice region that is on a side of the second insert ring facing towards the second control-disk, and that extends in an at least substantially axial direction with respect to the drive shaft, and a fourth orifice region that is on a side of the second insert ring facing the second high-pressure duct, and that extends in an at least substantially radial direction with respect to the drive shaft; wherein the first and second insert rings are configured to absorb an amount of pressure that corresponds to pressure loading of the axial piston machine.