Concrete vibrating opening reaming device

The utility model relates to a reaming device for a concrete vibrating opening. The reaming device for the concrete vibrating opening comprises two reaming units and a connecting rod for connecting the two reaming units together. Each chambering unit comprises a supporting rod, a connecting pedal and a chambering plate, the supporting rod is vertically connected to the lower portion of the connecting rod, the connecting pedal is vertically connected to the bottom of the supporting rod, the section of the chambering plate is an isosceles triangle, the bottom edge of the chambering plate is fixedly connected with the connecting pedal, and the bottom edge extends in the front-back direction; the distance between the two waist edges of the reaming plate in the front-back direction is gradually reduced from top to bottom, clamping grooves penetrating through the reaming plate in the left-right direction are formed in the corresponding positions of the two waist edges of the reaming plate, and the distance between