STAND-ALONE HYDROELECTRIC DRIVE WITH COMBINED REGULATION OF OUTPUT LINK AND DAMPING VALVE Russian patent published in 2013 - IPC B64C13/36 F15B9/00 

FIELD: transport.

SUBSTANCE: invention relates to hydroelectric control servosystems, namely to stand-alone hydroelectric drive with combined regulation of output link speed and damping valve. The stand-alone hydroelectric drive comprises electronic units of control microprocessor and inverting amplifier, DC brushless motor, unregulated irreversible pump, slide-type reversing valve, symmetrical or unsymmetrical hydraulic cylinder, cocked hydraulic compensator, filter, feeding valves, safety valves of injection cavity and filter, differential pressure and hydraulic cylinder stem position sensors, drain hydraulic compensator, drain cavities relief valve, command hydroelectric valve, on/off damping valve, two damping throttles, cocked hydraulic compensator. The command hydroelectric valve connects its outlet channel either with drain hydraulic compensator cavity or with working chamber of cocked hydraulic compensator. One end of on/off damping valve is affected by forces of spring and fluid pressure in drain hydraulic compensator, and the other end is affected by output pressure of command valve. The cocked hydraulic compensator has return spring, hydroelectric fixing valve of cocking plunger and sealed drainage cavity.

EFFECT: simplified design.

2 dwg