Magnetic steel protective device of large-capacity MW grade low-speed permanent magnetic fan

The utility model provides a magnetic steel protective device of a large-capacity MW grade low-speed permanent magnetic fan. The device is characterized by comprising a pole shoe used for clamping multiple blocks of magnetic steel, and a bottom plate located on the lower portion of the magnetic steel. The magnetic steel is located between the pole shoe and the bottom plate. Two sides of the pole shoe are provided with clamping tables clamping the magnetic steel. A groove is formed in the bottom plate to increase adhesion force of the magnetic steel. The magnetic steel is adhered to the middle of the pole shoe and the bottom plate through magnetic steel adhesives. The device solves the complex assembly problem of the magnetic steel, enables the problem to be simplified through a step-by-step method during manufacturing, is suitable for mass production, meanwhile solves the protective problem of the magnetic steel, and does not influence normal operation of the fan.