Lossless dismounting device for high-rotating-speed centrifugal fan blade

The utility model relates to a lossless dismounting device for a high-rotating-speed centrifugal fan blade. The hub comprises a fixing disc, a hydraulic jack, a lead screw and a hub body. A dismounting hole is formed in the hub body; a fixed support frame is arranged at the bottom of the fixed disc; a movable supporting frame is arranged at the bottom of the hub body. The fixed supporting frame comprises a first telescopic sleeve rod, a first arc-shaped supporting plate and a fixed lug plate. The top of the first arc-shaped supporting plate is fixedly arranged at the top of the first telescopic sleeve rod; the fixed lug plate is fixedly arranged at the bottom of a first telescopic sleeve rod; the movable supporting frame comprises a second telescopic sleeve rod, a second arc-shaped supporting plate, a rib plate and universal wheels. The second arc-shaped supporting plate is fixedly arranged at the top of the second telescopic sleeve rod; the rib plates are symmetrically arranged on thetwo sides of the second