Photovoltaic support screw pile with vertical fins

The utility model provides a photovoltaic support screw pile with vertical fins, which comprises a steel sleeve, a screw steel pile steel pipe, screw steel pile blades, a vertical limit retaining ring and a plurality of vertical fins, the screw steel pile steel pipe is provided with the plurality of screw steel pile blades along the length direction, the steel sleeve is arranged between two adjacent screw steel pile blades, the vertical limit retaining ring is arranged on the steel sleeve, and the vertical fins are arranged on the vertical limit retaining ring. The vertical fins are arranged on the outer wall of the steel sleeve, the vertical limiting check rings are arranged at the upper end and the lower end of the steel sleeve, and the spiral steel pile steel pipe is sleeved with the steel sleeve and the vertical limiting check rings. The spiral steel pile steel pipes above and below the steel sleeve welded with the vertical fins are respectively provided with a group of limiting gears, so that the spiral