Lifting appliance for trapezoidal sleeper

The invention discloses a lifting appliance for a trapezoidal sleeper. The lifting appliance comprises a bearing device, a suspension device and a movable lifting device. The bearing device takes a bearing frame body as a formwork, and four balanced supporting devices are arranged on the frame body. Two fork grooves are formed in the lower portion of the frame body in a bilateral symmetry mode, and a positioning device is disposed at one corner of the frame body. The movable lifting device takes a force transmission frame body as a framework, and the frame body is provided with four angle adjustment tracks matched with the balanced supporting devices. Two positioning blocks and two movable lifting hooks are arranged below a left short-edge support and a right short-edge support respectively, and the side edges of the two short-edge supports are provided with lifting hook locking devices. The bearing frame body of the bearing device acts on the force transmission frame body of the movable lifting device throug