This model of crane is a new type of crane that our company has introduced and digested advanced foreign technology, guided by modular design theory and modern computer technology, and introduced optimization design and reliability design methods. It is completed with imported configurations, new materials, and new processes, and is lightweight, universal, energy-saving, environmentally friendly, maintenance free, and high-tech. The main beam and end beam are welded box girder structures, with the lower flange plate serving as the electric hoist running track. The main beam and end beam are connected by high-strength bolts for easy transportation and on-site installation. The lifting mechanism adopts a new type of electric hoist, which has a compact structure and is easy to maintain.