Platform supporting device

The load platform support device (10) is provided by a housing (12) enclosing a piston (15) for deployment and retraction of a hydraulically operated support foot (13). The hydraulic medium supply line (20) is coupled to the housing space (19) which is pressurized for retraction of the support foot, the housing space (14) pressurized for deployment of the support foot connected to the hydraulic medium supply line via a pressure setting device (22).