Electro-hydraulic variable pitch system

The utility model discloses an electro-hydraulic variable pitch system which comprises driving assemblies with the number corresponding to that of fan blades, each driving assembly comprises a driver, a motor, a two-way hydraulic pump and a hydraulic cylinder, the driver is electrically connected wi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG GUOYIN, SHAO ANCANG, QI BAOCHUN, LI NING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	The utility model discloses an electro-hydraulic variable pitch system which comprises driving assemblies with the number corresponding to that of fan blades, each driving assembly comprises a driver, a motor, a two-way hydraulic pump and a hydraulic cylinder, the driver is electrically connected with the motor and controls the rotating speed and the rotating direction of a power output shaft of the motor, and the two-way hydraulic pump is connected with the hydraulic cylinder. A power output shaft of the motor is connected with a power input end of the two-way hydraulic pump, the two-way hydraulic pump is connected with the hydraulic cylinder through an oil way, a piston rod of the hydraulic cylinder is connected with the root of a fan blade, the driver in each driving assembly is further electrically connected with the variable-pitch controller, and each part in the system is powered by the fan. According to the variable pitch system disclosed by the utility model, the hydraulic part adopts the closed oil w