Patent ID: 9732773
Date: 2017-08-15
CPC Classifications: A01D,A01F,F04B,F15B

Claim:
1. A drive system for hydraulically driven working mechanisms of a working machine, comprising: an axial piston pump having a pump capacity and flow direction that is varied by changing a pivot angle of the axial piston pump; a hydraulic motor connected via a line to the axial piston pump and drivably connected to the driven working mechanisms; a control unit that is operated to set the pump capacity of the axial piston pump to zero via actuation of a solenoid valve; and an actuator system that is actuated by the control unit to actuate a limiting device to enable mechanically setting the pivot angle of the axial piston pump to zero degrees)(0°); wherein the actuator system is a control valve arrangement that comprises a valve assembly and a first and a second control valve; and wherein the limiting device comprises a piston-shaped element, at least one side of which is acted upon with hydraulic pressure.