When was the first bridge erecting machine invented in China?

The first 900-ton mobile bridge erecting machine in China was assembled in Jiangsu Huayuan Omar Heavy Industry Co., Ltd. located in Huishan District, and the experts from Wuxi Branch of Jiangsu Special Inspection Institute 12 also completed the "manufacturing supervision" task for half a year.

Mobile bridge erecting machine is mainly used for the transportation of prestressed reinforced concrete box girder of high-speed railway in China. Compared with track bridge erecting machine, it belongs to the all-in-one machine for transporting bridges.

The tire walking mechanism is more flexible and efficient. Compared with the existing bridge erecting machine, it has unique technical advantages. It can smoothly hoist and transport double-line box girders through tunnels with speeds of 250 km/h and 300 km/h, and can erect beams at the tunnel entrance or even in the tunnel. According to the plan, in 20 12 years, the 900-ton bridge erecting machine, which embodies the painstaking efforts of Wuxi researchers, will go to the first line of high-speed rail construction in China.

The extended information takes JQ900A double-girder three-legged gantry bridge erecting machine as an example, which is mainly composed of boom, 1 lifting trolley, No.2 lifting trolley, 1 column, No.2 column, No.3 column, hydraulic system, electrical system, diesel generator set and safety protection monitoring system (attached figure 1).

The girder erection operation of JQ900A bridge erecting machine adopts simply supported cross-hole method. Use YL900 beam carrier to transport the beam to the tail of bridge erecting machine, use lifting trolley to tow the beam, and fine-tune the box girder position in the air. The bridge erecting machine adopts the operation mode that the tires are driven by hydraulic pressure and the steps move vertically through the holes. It can erect 32m, 24m and 20m double-line whole-hole box girders, and is suitable for erecting box girders with minimum curve radius R5500m, maximum longitudinal slope of 20‰ and rated lifting capacity of 900t.

People's Network-Wuxi built the first super bridge erecting machine in China.