Hydro-static drive system for use in rotary drive motor of rotary drive of mobile working machine i.e. excavator, has hydraulic accumulator attached to delivery line of pump, where delivery line is guided to directional valve

摘要

#CMT# #/CMT# The system has a hydraulic accumulator (19) for recovering brake energy of a double-acting load (6) during brake phase of the load. The hydraulic accumulator stands in connection with load lines (8a, 8b) for a changing purpose using a recuperation valve device (20), where the load lines stay in connection with an outlet side of the load. The hydraulic accumulator is attached to a delivery line (4) of a pump (1) for discharging process during acceleration phase of the load. The delivery line of the pump is guided to a directional valve (5). #CMT#USE : #/CMT# Hydro-static drive system for use in a rotary drive motor of a rotary drive of a mobile working machine (claimed) i.e. excavator. #CMT#ADVANTAGE : #/CMT# The system has simple structure with cost-effective construction and small effort for the recovery of the brake energy of the load in a less fuel consumption manner, and enables the simple and cost-effective charging and discharging of the storage. The system enables simple control of the loading operation of the storage without need for additional sensors. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a hydro-static drive system of a mobile working machine in a form of excavator. 1 : Pump 4 : Delivery line 5 : Directional valve 6 : Double-acting load 8a, 8b : Load lines 19 : Hydraulic accumulator 20 : Recuperation valve device.