Lifting device and ship unloader

The invention relates to the technical field of ship unloading equipment, and discloses a lifting device and a ship unlor.The lifting device comprises a rack, a lifting mechanism and a lifting mechanism, one end of the cantilever support is slidably arranged on the stand column; the material taking mechanism is arranged on the cantilever frame and used for taking materials; the lifting mechanism comprises a lifting traction rope, a lifting pulley assembly and a lifting driving unit; the lifting driving unit is fixed to the side, away from the cantilever support, of the rack. The two ends of the lifting traction rope are connected with the cantilever support and the lifting driving unit through lifting pulley assemblies correspondingly. The balance weight mechanism comprises a balance weight traction rope, a balance weight pulley assembly and a balance weight piece; the counterweight is positioned on one side of the rack away from the cantilever frame; the two ends of the balance weight traction rope are conne