Hydraulic control arrangement for a mobile working machine, in particular for a wheeled loader, for damping of pitching vibrations

摘要

Hydraulic control arrangement for a mobile working machine, in particular for a wheeled loader,with at least one hydraulic cylinder (12), with the aid of a work tool is movable,with a directional control valve (11) for controlling the pressure fluid conduit between a pressure chamber (15) of the hydraulic cylinder (12), a fluid pressure source and a tank (27),with a hydraulic accumulator (21), which by means of a filling valve (22), which is located in a filling line (20) is located, with the pressure medium source and the boost pressure can be connected via the filling valve (22) to a maximum pressure can be increased,and with a control valve (42), by means of the shifting, a connection between the hydro store (22) and the pressure chamber (15) of the hydraulic cylinder (12) to - and is capable of being,characterised by a check valve (63), which in an additional fluid path (62) between the hydraulic accumulator (21) and the pressure chamber (15) of the hydraulic cylinder (12) is arranged and to the pressure space (15) of the hydraulic cylinder (12) and opens towards the.