Pneumatic-liquid auto-balance actuator with large diameter

A pneumatic-liquid auto-balance actuator, comprising a stator and a balance disk, wherein the stator and a bearing are fixedly provided on a base, the bearing supports a rotor to be balanced, the balance disk is fixedly provided outside the rotor to be balanced and rotates synchronously with the rotor to be balanced, and the stator is provided outside the balance disk;

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• the balance disk comprises an intermediate sleeve, a liquid storage tray and a shield, wherein the intermediate sleeve is interference-sheathed on an outer side wall of the liquid storage tray, an outer side wall of the intermediate sleeve is axially provided with four gas circulation grooves, the liquid storage tray comprises four liquid storage cavities which are uniformly distributed along a circumferential direction, an equal amount of balance liquid is initially provided in each of the liquid storage cavities, gas injection pipes are provided in the liquid storage cavities and are respectively fixedly provided on outer side walls of the liquid storage cavities and are inserted into inner side walls of the liquid storage cavities, and the gas injection pipes are in communication and connected with the gas circulation grooves;
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• a communication pipe is in communication and connected between the liquid storage cavity and another liquid storage cavity provided opposite thereto, an evacuation pipe is in communication and connected with the middle of the communication pipe, one end of the evacuation pipe is fixedly provided on a bottom surface of the liquid storage tray, the other end of the evacuation pipe is in communication with the atmosphere, the middle of the evacuation pipe is in communication and connected with the communication pipe, the communication pipe and an exhaust pipe are provided in a shield, and the shield is fixedly provided on the liquid storage tray.