This product adopts a double beam double track beam structure and is currently the largest double beam single trolley casting crane in China. The bridge is composed of two main beams and two hinged end beams. The overall layout is compact and reasonable. All reducers use hard tooth surface reducers; The pulley adopts a new process to roll the pulley, which has a beautiful appearance and wear-resistant rope groove; The main load-bearing shafts are all made of forgings; To ensure assembly accuracy, an integrated manufacturing process is adopted. The whole vehicle adopts a modular and equal strength design concept, while considering more scientific human-machine engineering and more reasonable matching of transmission and structural components. This not only facilitates maintenance and repair, but also greatly improves the service life of the entire machine.