Grooving device for power construction

The utility model discloses a grooving device for power construction, and belongs to the field of power construction. A grooving device for power construction comprises a bottom plate, a support is fixed to the rear side of the upper end of the bottom plate, a limiting sleeve is fixed to the upper side of the front end of the support, a plurality of gear rings are fixed to the outer end face of a supporting ring at equal intervals, and a front gear and a rear gear which are meshed with each other are rotationally installed in the support. The radius of the front gear is twice that of the rear gear, the front end of the front gear is meshed with the rear side of the gear ring, an output gear is fixed to the right end face of the rear gear, the diameter of the output gear is equal to that of the front gear, and a scale plate with the front end meshed with the rear end of the output gear is slidably installed in the support. A limiting ring is fixed to the upper side of the periphery of the motor, and the lower