Patent attributes
The invention relates to a hydraulically telescopic support device for a vehicle, in particular for a mobile loading crane, comprising a hydraulically movable piston-cylinder unit for extending and retracting the support device and a hydraulic system comprising a first hydraulic circuit for moving the piston-cylinder unit and a hydraulic force measuring device for determining a supporting force which acts on the support device, wherein the hydraulic force measuring device has a dedicated second hydraulic circuit that is independent from the first hydraulic circuit of the hydraulic system, at least during the determination of the supporting force.