Axial piston machine utilizing a bent-axis construction
AssigneeLinde Hydraulics GmbH & Co. KG
InventorMartin Bergmann
Life of this patent
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Abstract
A hydrostatic axial piston machine (1) has a cylinder barrel (7) with a plurality of piston bores having pistons (10) fastened in an articulated manner to a drive flange (3). For articulated fastening of the pistons (10) to the drive flange (3), ball joints (20) are provided that are formed by a spherical cap-shaped receptacle socket (3a) in an end surface (3b) of the drive flange (3) and a ball head (10a) that is operatively connected with the piston (10). The receptacle sockets (3a) are each in the form of hemispheres that extend to the ball equator, and on one end surface (3b) of the drive flange (3), in the vicinity of the receptacle sockets (3a), there is a retaining web (30) that extends beyond the ball equator of the hemisphere to grip the ball head (10a) at an angle of greater than 180°.
Claims16
A hydrostatic axial piston machine with a bent-axis construction, comprising:
- a drive shaft located inside a housing and rotatable around a first axis of rotation (Rt),
- a drive flange located inside the housing and rotatable around the first axis of rotation (Rt),
- a cylinder barrel located inside the housing and rotatable around a second axis of rotation (Rz), wherein the cylinder barrel includes a plurality of piston bores,
- a longitudinally displaceable piston located in each piston bore, wherein the pistons are fastened in an articulated manner to the drive flange;
- and
- ball joints for articulated fastening of the pistons to the drive flange, wherein the ball joints include a spherical cap-shaped receptacle socket in an end surface of the drive flange and a ball head operatively connected with the piston,
- wherein the receptacle sockets comprise hemispheres that extend to a ball equator, and wherein on an end surface of the drive flange, in a vicinity of the receptacle sockets, there is a retaining web that extends beyond the ball equator of the hemisphere to grip the ball head at an angle of greater than 180°, and
- wherein the retaining web on each receptacle socket forms two retaining segments that are located opposite each other on the receptacle socket, and extend beyond the hemisphere.
Dependencies are inferred from the claim text.