Hydrostatic radial piston machine

Patent metadata

Field	Value
Publication number	US-10107099-B2
Application number	US-201514975797-A
Country	US
Kind code	B2
Filing date	Dec 20, 2015
Priority date	Dec 22, 2014
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A hydrostatic radial piston machine is useable inversely. The hydrostatic radial piston machine has a distributor in which a flushing valve, a pressure-maintaining valve connected downstream of the flushing valve, and two nonreturn valves are arranged.

First claim

What is claimed is:

1. A hydrostatic radial piston machine, comprising:
a rotatable housing in which a cylinder block is arranged, cylinder block pistons displaceably arranged in the cylinder block, the pistons supportable on a housing-secured cam ring and each piston bounding a cylinder space in the cylinder block,
wherein the cylinder spaces are connectable to a first and second main port via a housing-secured distributor configured to supply pressure medium,
wherein a core element is inserted into the distributor and is configured to connect the distributor to the first and second main ports, the core element configured for rotation relative to the distributor, and
wherein at least one of a flushing valve, a pressure-maintaining valve, and a nonreturn valve for the first main port is arranged in the distributor, and
wherein a nonreturn valve for the second main port is arranged in the distributor.

2. The hydrostatic radial piston machine according to claim 1 , wherein:
the distributor with the core element bounds a first annular groove which is connectable to the first main port,
the distributor together with the core element bounds a second annular groove, which is connectable to the second main port, and
the flushing valve is connected to the first annular groove via a first pressure medium flow path and is connected to the second annular groove via a second pressure medium flow path.

3. The hydrostatic radial piston machine according to claim 1 , wherein the flushing valve and the pressure-maintaining valve are arranged on the distributor approximately diametrically with respect to the nonreturn valves.

4. The hydrostatic radial piston machine according to claim 1 , wherein the pressure-maintaining valve and the nonreturn valves have an identical valve body.

5. The hydrostatic radial piston machine according to claim 1 , wherein the flushing valve, the pressure-maintaining valve, the nonreturn valve for the first main port, and the nonreturn valve for the second main port are arranged in the distributor.

6. A hydrostatic radial piston machine, comprising:
a rotatable housing in which a cylinder block is arranged, cylinder block pistons displaceably arranged in the cylinder block, the pistons supportable on a housing-secured cam ring and each piston bounding a cylinder space in the cylinder block,
wherein the cylinder spaces are connectable to a first and second main port via a housing-secured distributor configured to supply pressure medium,
wherein a core element is inserted into the distributor and is configured to connect the distributor to the first and second main ports, the core element configured for rotation relative to the distributor, and
wherein at least one of a flushing valve, a pressure-maintaining valve, and a nonreturn valve for the first main port is arranged in the distributor,
wherein a nonreturn valve for the second main port is arranged in the distributor,
wherein the flushing valve has a valve slide which is arranged in an axially displaceable manner in a valve slide bore introduced into the distributor, and
wherein the valve slide bore extends approximately tangentially with respect to an inner lateral surface of the distributor.

7. The hydrostatic radial piston machine according to claim 6 , wherein the valve slide bore is introduced into the distributor approximately level with the first annular groove or approximately level with the second annular groove, as seen in the longitudinal direction of the radial piston machine.

8. The hydrostatic radial piston machine according to claim 6 , wherein two connection bores extending approximately at a parallel distance to each other open into the valve slide bore approximately transversely with respect to the valve slide bore to form the pressure medium flow paths.

9. The hydrostatic radial piston machine according to claim 8 , wherein:
the first connection bore is connected via a first connecting bore to a second connecting bore which opens in the first annular groove, to form the first pressure medium flow path, and
the second connection bore opens in the second annular groove.

10. The hydrostatic radial piston machine according to claim 6 , wherein the pressure-maintaining valve has a valve bore, which is introduced into the distributor, for a valve body.

11. The hydrostatic radial piston machine according to claim 10 , wherein the valve bore opens in the valve slide bore of the flushing valve.

12. The hydrostatic radial piston machine according to claim 10 , wherein the valve bore of the pressure-maintaining valve is introduced from an end side of the distributor and is approximately parallel to the longitudinal axis of the distributor.

13. A hydrostatic radial piston machine, comprising:
a rotatable housing in which a cylinder block is arranged, cylinder block pistons displaceably arranged in the cylinder block, the pistons supportable on a housing-secured cam ring and each piston bounding a cylinder space in the cylinder block,
wherein the cylinder spaces are connectable to a first and second main port via a housing-secured distributor configured to supply pressure medium,
wherein a core element is inserted into the distributor and is configured to connect the distributor to the first and second main ports, the core element configured for rotation relative to the distributor,
wherein at least one of a flushing valve, a pressure-maintaining valve, and a nonreturn valve for the first main port is arranged in the distributor,
wherein a nonreturn valve for the second main port is arranged in the distributor, and
wherein a respective valve bore is provided for a respective nonreturn valve, which valve bores extend approximately parallel to the longitudinal axis of the distributor.

14. The hydrostatic radial piston machine according to claim 13 , wherein the valve bore for the first nonreturn valve extends from a first end side of the distributor, and/or wherein the valve bore for the second nonreturn valve extends from a second end side of the distributor.

15. The hydrostatic radial piston machine according to claim 13 , wherein the valve bore of the second nonreturn valve is connected to the first annular groove via a connecting bore and/or the valve bore of the first nonreturn valve is connected to the second annular groove via a connecting bore.

Assignees

• Bosch Gmbh Robert

Inventors

• Offenburger Johannes
• Essig Heinz-Gerhard
• Macphee Adam

Classifications

• F03C1/08

  Distributing valve-gear peculiar thereto (for engines with positive-displacement in general F01L; {F03C1/06 takes precedence}) · CPC title

• F01B1/0606

  with cam-actuated distribution member(s) · CPC title

• F03C1/0472

  with cam-actuated distribution members · CPC title

• F01B1/0603

  the connection of the pistons with an element being at the outer ends of the cylinders · CPC title

• F01B9/06 Primary

  the piston motion being transmitted by curved surfaces · CPC title