BRAKE CONTROL SERVO VALVE HAVING RAPID PRESSURE RELIEF PROTECTION

A brake control servo valve which has rapid pressure relief protection, the valve consisting of a torque motor (11), a jet amplifier (12), a pilot stage (13) and a power stage. The power stage comprises a hydraulic solenoid valve (2), a spool valve assembly (14), an electromagnet (24), and a shutter...

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Bibliographische Detailangaben
Hauptverfasser:	XIE, Zuojian, FANG, Qun, JIN, Yaolan, DING, Jianjun, WANG, Simin
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	ACTUATING-FLOATS AEROPLANES AIRCRAFT AVIATION BLASTING COCKS COSMONAUTICS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HELICOPTERS HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A brake control servo valve which has rapid pressure relief protection, the valve consisting of a torque motor (11), a jet amplifier (12), a pilot stage (13) and a power stage. The power stage comprises a hydraulic solenoid valve (2), a spool valve assembly (14), an electromagnet (24), and a shutter assembly (23); the hydraulic solenoid valve is provided with an oil inlet J, an oil return port H, a hydraulic solenoid valve pressure output port P and a load chamber pressure output port S, wherein the hydraulic solenoid valve pressure output port P and load chamber pressure output port S of the hydraulic solenoid valve are connected, and an one-way valve (21) is added therebetween, so that when the hydraulic solenoid valve is powered off, high-pressure oil of a brake chamber flows into an oil tank by means of a constant opening of a hydraulic servo valve spool and the one-way valve bypassed by the brake, thereby improving the controllability of brake pressure. Une vanne asservie de commande de frein présente un