Hydraulic drive and hydraulically actuated tool

摘要

The drive (H) has a switching valve (U) comprising a working force/pressure control function. The valve responds counter to spring force and depending on pressure and/or through flow volume. The switching valve takes a through flow position when the pressure source is cut off or switched off to connect an actuation chamber of a hydro consumer (2) through a bore with the tank for a return stroke of the hydroconsumer. The hydroconsumer is stopped during the return stroke hydraulically through the pressure source by a pressure pulse and a through flow volume pulse. An independent claim is also included for a hydraulically operable working tool.