Axial piston machine

摘要

An axial piston machine includes a housing part, a drive shaft, which is mounted in the housing part, and a cylinder drum, which is connected to the drive shaft in a rotationally fixed manner and which accommodates a plurality of pistons. Each of the pistons bound a working chamber and are supported on a swashplate. The working chambers can be connected in alternation to a high-pressure channel and to a low-pressure channel, which extend in the housing part. An insert part is rigidly inserted into the housing part. A control surface of the insert part is directly opposite the cylinder drum. The insert part has a high-pressure channel section and a low-pressure channel section, which have approximately kidney-shaped opening areas in the control surface. The other openings of the high-pressure and low-pressure channel sections opposite the opening area in the control surface are formed radially on the insert part.

主权项

1. A double axial piston machine comprising:
a housing having a common housing part that defines:
an axial bore passing through the common housing part; anda pair of high pressure ducts and a pair of low pressure ducts that extend radially out from the axial bore a pair of insert parts fixedly inserted into opposite ends of the axial bore of the common housing part, each insert part defining:
a control face facing away from the common housing part;a high pressure duct section having an axial mouth opening through the control face and a cylindrical radial mouth configured to open into a corresponding one of the pair of high pressure ducts in the common housing part;a low pressure duct section having an axial mouth opening through the control face and a cylindrical radial mouth configured to open into a corresponding one of the pair of low pressure ducts in the common housing part; anda receptacle that is coaxial with the axial bore and passes through the insert part; a pair of bearings, each bearing received in the receptacle of a corresponding insert part; a coupling bushing that is coaxial with the axial bore and that is rotatably mounted within the receptacles of the insert parts via the bearings; a pair of drive shafts coaxial with the axial bore and inserted into opposite ends of the coupling bushing such that the pair of drive shafts and the coupling bushing are rotatably fixed to each other; and a pair of cylinder drums, each cylinder drum defining an end face having a shape complementary to the control face of the corresponding insert part, the cylinder drums mounted in a rotatably fixed fashion to the drive shafts such that the end face of each cylinder drum bears on the control face of the corresponding insert part.