Auxiliary shaft device and lifting equipment

The utility model discloses an auxiliary shaft device and lifting equipment, and relates to the technical field of rotating shaft equipment, and the auxiliary shaft device comprises a support which comprises a supporting plate, and the supporting plate is provided with a supporting groove for a driving shaft to penetrate through; the rolling assembly comprises at least two rolling parts, the rolling parts are arranged along the edge of the supporting groove, each rolling part abuts against the driving shaft, and the central angle of a sector formed by every two adjacent rolling parts and the center of the driving shaft is smaller than 180 degrees. The auxiliary shaft device is provided with the supporting groove for the driving shaft to penetrate through, and the outer edge of the supporting groove is provided with the rolling piece abutting against the driving shaft. When the auxiliary shaft device is used, the auxiliary shaft device is arranged at the position, where bending deformation is large, of the dri