Hydraulic machine with a threaded central pin for setting machine preload
AssigneeDana Motion Systems Italia S.R.L.
InventorsLuca FONTANESI, Piergiorgio TRINCHIERI, Fabio NATALI
Life of this patent
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Abstract
Systems and methods for a hydraulic machine. The hydraulic machine includes, in one example, a rotational shaft, a central pin rotationally coupled to the rotational shaft and threadingly engaged with a cylinder block via a threaded interface, and pistons coupled to the rotational shaft and mated with cylinders in the cylinder block. The hydraulic machine further includes a distribution plate in fluidic communication with the cylinders and a fluid inlet and a fluid outlet.
Claims20
A hydraulic machine, comprising:
- a rotational shaft;
- a central pin rotationally coupled to the rotational shaft and threadingly engaged with a cylinder block via a threaded interface;
- a plurality of pistons coupled to the rotational shaft and mated with a plurality of cylinders in the cylinder block;
- and
- a distribution plate in fluidic communication with the plurality of cylinders and a fluid inlet and a fluid outlet.
A method for operation of a first hydraulic machine, comprising:
- rotating a rotational shaft while a preload force is exerted on a distribution plate by a cylinder block;
- wherein an amount of preload force is dictated by an amount of threaded engagement between a central pin and the cylinder block;
- and
- wherein the first hydraulic machine includes:
- the rotational shaft;
- the central pin rotationally coupled to the rotational shaft and threadingly engaged with the cylinder block;
- a plurality of pistons coupled to the rotational shaft and mated with a plurality of cylinders in the cylinder block;
- and
- the distribution plate in fluidic communication with the plurality of cylinders and a fluid inlet and a fluid outlet.
A bent axis hydraulic machine, comprising:
- a rotational shaft;
- a central pin rotationally coupled to the rotational shaft and threadingly engaged with a cylinder block;
- a plurality of pistons coupled to the rotational shaft and mated with a plurality of cylinders in the cylinder block;
- and
- a distribution plate in fluidic communication with the plurality of cylinders and a fluid inlet and a fluid outlet;
- wherein the cylinder block exerts a preload force on the distribution plate that is based on an amount of threaded engagement between the central pin and the cylinder block.
Dependencies are inferred from the claim text.