Bearing lifting device

The utility model discloses a bearing lifting device which comprises a stand column, a first lifting lug is arranged at the upper end of the stand column, the lower end of the stand column is connected with a plurality of guide rails arranged in the radial direction of a cylinder through the cylinder, and the guide rails are in sliding fit with a clamping assembly used for clamping a bearing. The clamping assembly comprises a pulley yoke, pulleys matched with the guide rails are arranged on the inner side of the pulley yoke, a horizontal plate is connected to the lower portion of the pulley yoke through a connecting plate, two driving motors are symmetrically distributed on the plate face of the horizontal plate, rotating shafts of the driving motors vertically penetrate through the horizontal plate, and rubber cams are arranged at the lower ends of the rotating shafts. The two rubber cams abut against the outer ring and the inner ring of the bearing respectively under the action of the corresponding driving