Micromotor speed changing small hydraulic turbine speed governor

The utility model provides a micro-motor miniature variable-speed hydroturbine speed governor which comprises a driving part, a transmission part and an output part. The driving part comprises a miniature motor and a reducer. The transmission part is provided with a ball bearing screw pair. The output shaft of the reducer is connected with the screw rod of the ball bearing screw pair by a bearing. The nut of the ball bearing screw pair is connected with an output device which comprises a slide sleeve which is mounted outside the nut and is connected with the nut and an output rod which is connected with the tail end of the slide sleeve. The external wall of the slide sleeve is provided with a guide key and a guide base which is matched with the guide key. The utility model does not require the pressure oil operation and a mechanical hydraulic pressure component and has simple structure and convenient maintenance, so a plurality of troubles during the operation and the maintenance are avoided, which is conveni