The utility model discloses an electric fan with full wind direction, wherein an swivelbearing is fixed on a foundation of the electric fan, and a support arm is installed on the swivelbearing;
本实用新型公开了一种全风向电风扇，它是在电风扇的底座上设有旋转轴承， 支撑臂安装在旋转轴承上；
2
The mean value of work loads on a shaft bearing of swivel and rotary table is determined by basic principles of fuzzy theory, considering the loads' fuzziness and the requirement for reliability.