Novel axial flow fan hub

The utility model discloses a novel axial flow fan hub which comprises a hub cover, a blade handle half groove is formed in the position close to the periphery of the hub cover, first bolt holes are formed in the two sides of the blade handle half groove in the circumferential direction of the hub cover, and the first bolt holes are matched with first locking bolts. A second bolt hole is formed in the hub cover and located between the blade handle half groove and the central axis of the hub cover, and the second bolt hole is matched with a second locking bolt. According to the utility model, the second locking bolts in the annular array can powerfully ensure the locking force between the two hub covers, so that the locking force between the blade handle groove and the blade handle is improved at the same time. The first locking bolts arranged on the two sides of the blade handle half groove can remarkably improve the locking force between the blade handle groove and the blade handle, and meanwhile the locking