The Ma'anshan road-rail dual-purpose Yangtze River Bridge auxiliary channel bridge constructed by China Railway Fourth Bureau is the world's largest-span road-rail dual-purpose ballastless track steel truss girder cable-stayed bridge. It adopts a double-tower three-cable plane steel truss-girder cable-stayed bridge and is semi-floating. system, the total length of the steel truss beam is 840m, and the total weight of the steel beam is approximately 35,000 tons. Steel truss beam segments are divided into two types: 28m double segments and 14m single segments. The maximum weight of the 28m double segments is about 1466t, and the maximum weight of the 14m single segment is about 621t. Both types of segmented steel beams need to be hoisted using a girder crane. .
The structure of the CQ1800B girder crane produced by our company consists of a frame structure, traveling system, jacking system, winch, hoisting system, lifting point longitudinal movement system, electro-hydraulic system, and walkway railings. The whole machine has a dead weight of 1050t and a rated lifting capacity. With a capacity of 1800t, a lifting range of 13.6m to 22.6m, and a lifting height of 75m, it is currently the largest tonnage girder crane in China.
Compared with the version 1.0 1800t girder crane that has been put into use, the CQ1800B girder crane accepted this time has been significantly upgraded in terms of working condition adaptability, frame structure modularization, automatic anchor box device and electrical control system. It can be applied to hoisting work with different anchor span distances and anchor box orientations, and fully meets the overall installation plan of the side span push erection and mid-span cantilever erection of the auxiliary channel of the Ma'anshan highway-rail Yangtze River Bridge. At the same time, in terms of safety monitoring and management, it can realize information monitoring functions such as system self-inspection before startup, data collection during operation, and full-process information transmission, fully meeting the monitoring and management needs of different levels of crane operators, on-site offices, remote managers, etc. .
The factory acceptance of the CQ1800B girder crane adds a solid guarantee to the safe and high-quality construction of the project. After the completion of the project, it will be of great significance to further improve the Yangtze River Delta high-speed railway network and support the higher-quality integrated development of the Wanjiang region, the province and the Yangtze River Delta.
It will also be of great significance to Ma'anshan City in accelerating the higher-quality integrated development of the Yangtze River Delta and deeply integrating it into the Yangtze River Delta region. The two major metropolitan areas of Nanjing and Hefei have played an important role in accelerating cross-river development.
