The utility model discloses a multipurpose motor, including the drive assembly, its characterized in that: still including shell, automatically controlled box and setting up first order gear train in the shell, second level gear train, third level gear train, fourth stage gear train, pyatyi gear train, the 6th grade of gear train, the 7th grade of gear train and neutral gear resetting means, this motor has compact structure, safe in utilization, and simple to operate, application range are very extensive, like electric roller shutter door, high -speed crossing, the adaptation of parking area gate and mechanical equipment homoenergetic, the motor just reversing and output speed all controllable, adjustable, the moment of torsion transships adjustable the protection, the user can select different functions for use according to the demand, using -way is nimble.