The new bridge 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, which is lightweight, universal, energy-saving and environmentally friendly, and has high technological content. The design, manufacturing, and inspection of this crane are in accordance with relevant national standards, equivalent to some foreign standards such as FEM, DIN, IEC, etc. Compared with the original universal QD bridge crane products, the self weight is reduced by about 15-30%, and the wheel pressure is reduced by about 10-35%, which can reduce the requirements of the crane for the factory structure and save the manufacturing cost of the factory. The core component of the transmission mechanism, the reducer, is entirely made of hard tooth surfaces and high-precision gear pairs. With the application of steel drums, forged wheels, and variable frequency speed control systems, this model of crane has become an updated product with excellent economic and social benefits, suitable for industries such as mechanical manufacturing, assembly, petrochemicals, warehousing and logistics, power construction, papermaking, and railways. The main beam adopts a biased rail box structure and is connected to the end beam with high-strength bolts for easy transportation. Specialized processing equipment ensures the accuracy of the main end beam connection, ensuring smooth operation of the crane. The lifting trolley is an open and compact winch structure, and European style hoist trolley can also be used for small and medium-sized tonnage. The operating mechanism of the large and small cars adopts a European technology three in one drive form, with a hard tooth reducer, compact structure, low noise, no oil leakage, and long service life. Due to the use of European compact cars and high-strength materials, the overall size of the machine is small and lightweight. Compared to traditional cranes, under the same lifting height conditions, the height of the factory can be reduced, effectively reducing the cost of the factory. Ø Modular design, short design cycle, high degree of universality, improving the utilization rate of components. Ø Compact structure, low clearance, small external dimensions, large working range, effectively improving production efficiency. Ø Full frequency conversion control, smooth operation, no impact, slow heavy load, fast light load, energy-saving and consumption reducing.