Hydraulic arrangement for supplying construction machines with a pressure medium, and construction machine

Abstract

Hydraulic arrangement (30) for supplying construction machines, in particular civil engineering machines, with a pressure medium, comprising a machine-side hydraulic unit (40) that has a motor-driven machine-side pump (33) for delivering a pressure medium from a machine-side tank (37) under pressure and a machine-side hydraulic system (36) that can be supplied with the pressure medium, as well as a return line (45) for returning the pressure medium to the machine-side tank (37), and an additional hydraulic unit (41) that has an electrically driven aggregate-side pump (34) for delivering a pressure medium from an aggregate-side tank (38) under pressure, a pressure-bearing outlet connection (46) for the pressure medium under pressure and a pressureless inlet connection (47) for returning the pressure medium to the aggregate-side tank (38). The pressureless inlet connection (47) of the additional hydraulic unit (41) is connectable to the machine-side hydraulic system (40), and the machine-side hydraulic unit (40) has a switching device (35) that is connected to a pressure line (44) from the machine-side pump (33) and is connectable to the pressure-bearing outlet connection (46) of the additional hydraulic unit (41) and which is configured to supply the machine-side hydraulic system (36) with the pressure medium under pressure from the machine-side pump (33) and/or from the aggregate-side pump (34).

Dependencies are inferred from the claim text.