Hydraulic Drive System and Method for Producing the Hydrostatic Drive System
AssigneeHMS-HYBRID MOTION SOLUTIONS GmbH
InventorsAchim HELBIG, Frank SOEHNEL, Jan RANTA
Life of this patent
Estimating the term…
Abstract
A hydrostatic drive system, and methods of making and using same, including a constant pump configured to provide at least two and at most three pumping states for pumping a corresponding volume flow. A switching device has a switching valve and a switching member, wherein a switching pressure is provided via the switching valve for switching the switching member, and wherein the switching member is configured, on the basis of the switching pressure, to switch the constant pump into one of the pumping states and to provide the corresponding volume flow to the hydraulic cylinder.
Claims17
A hydrostatic drive system comprising:
- at least one hydraulic cylinder with cylinder surfaces, wherein the cylinder surfaces of the at least one hydraulic cylinder which are hydraulically connected to a constant pump are configured to be of the same size;
- the constant pump for pumping a volume flow, wherein the constant pump is configured to provide at least two and at most three pumping states for pumping the volume flow as a corresponding volume flow;
- a switching device with a switching valve and a switching member, wherein a switching pressure is provided via the switching valve for switching the switching member;
- and
- wherein the switching member is configured, on the basis of the switching pressure, to switch the constant pump into one of the pumping states and to provide the corresponding volume flow to the hydraulic cylinder.
A method for producing a hydrostatic drive system, comprising:
- selecting at least one hydraulic cylinder with cylinder surfaces, wherein the cylinder surfaces of the at least one hydraulic cylinder which are hydraulically connected to a constant pump are configured to be of the same size;
- selecting the constant pump for pumping a volume flow, wherein the constant pump is configured to provide at least two and at most three pumping states for pumping a corresponding volume flow;
- selecting a switching device with a switching valve and a switching member, wherein a switching pressure is provided via the switching valve for switching the switching member;
- and
- configuring the switching member such that, on the basis of the switching pressure, the constant pump switches into one of the pumping states and provides the corresponding volume flow to the hydraulic cylinder.
Dependencies are inferred from the claim text.