AUTONOMOUS ELECTROHYDRAULIC STEERING DRIVE Russian patent published in 2010 - IPC F15B9/09 

FIELD: transportation.

SUBSTANCE: drive is intended for systems of wheel machines steering control. Autonomous electrohydraulic steering drive comprises electric motor of direct current 10, which is connected to control unit 4, uncontrolled irreversible pump 11, four-port three-throw electrohydraulic distributor 18 with spring alignment and two control windings, actuating mechanism 19, which is communicated by injection 14 and drain 13 lines with hydraulic tank 12, two comparators 6 and 7, double semiperiodic rectifier 2 and summator 3, to inlet of which displacement signal is supplied. At the same time control signal is supplied to inlets of comparators 6 and 7 and double semiperiodic rectifier 2, outlets of comparators are connected with control windings of four-port three-throw electrohydraulic distributor 18, outlet of double semiperiodic rectifier 2 via summator 3 is connected to control unit 4, and specified injection 14 and drain 13 lines are arranged with the possibility of connection to each other in case signals are unavailable.

EFFECT: simplified design of steering drive with simultaneous increase of its reliability.

3 cl, 1 dwg