Natural ventilation equipment for long tunnel

The invention discloses long tunnel natural ventilation equipment which comprises a plurality of vertical shafts, the vertical shafts are arranged at the top of a long tunnel at intervals, the upper end of each vertical shaft is fixedly connected with a plurality of supporting cross beams, the supporting cross beams are fixedly connected with vertical rods, the upper ends of the vertical rods are rotationally connected with wind energy blades, and the bottoms of the vertical rods are rotationally connected with ventilation blades. The wind energy blades are in transmission shaft connection or electric power transmission connection with the ventilation blades. A protective grating assembly is arranged at the upper end of the vertical shaft. The electric push rod extends to push the circular grating to ascend in the axial direction of the vertical rod, the edge of the circular grating extrudes the fan-shaped grating, the fan-shaped grating is made to turn outwards around the hinged shaft of the fan-shaped grati