Hydrostatic drive

摘要

The drive (1) has a valve arrangement that is provided for interconnecting the power ports of pump with each other and power ports of hydraulic motor (6a,6b) with a tank during free-wheeling mode. The power ports of motor are disconnected from tank, and connected with power ports of pump during stand-by mode. The power ports of pump are connected with power ports of motor during active mode, after separating the power ports of pump from each other and power ports of motor. Five 2/2 logic valves are provided for adjusting the operation modes through switching constellation.