Lifting appliance for electric lifting of fully-prefabricated box culvert

The utility model discloses a lifting appliance for electrically lifting a fully-prefabricated box culvert, which comprises a U-shaped frame, four limiting devices are arranged on two sides of the U-shaped frame in a liftable manner, a driving device is arranged on the U-shaped frame, the U-shaped frame is transversely inserted into the box culvert, and a lifting device is arranged on the U-shaped frame. The driving device is used for driving the limiting device to get close to and press the box culvert inserted in the U-shaped frame; the limiting device comprises a mounting plate arranged on the U-shaped frame, a pressing plate hinged to the mounting plate and an angle adjusting device arranged on the mounting plate, and the angle adjusting device is used for driving the pressing plate to rotate and adjust; the power device is used for driving the angle adjusting device to move. According to the box culvert fixing device, adaptive adjustment can be carried out according to different inclination conditions of