Heavy weapon unsheathed! Delivery of the largest tonnage tower crane of China Railway Construction Corporation

On June 15, the R8000-320 tower crane jointly developed by China Railway Construction Bridge Bureau and Zhonglian Heavy Branch was successfully launched, which will help the hoisting construction of the steel tower segment of Zhangjinggao Yangtze River Bridge, the world's largest span suspension bridge built by the group. The lifting capacity of the tower crane ranks fourth in the world and is the largest tonnage tower crane of China Railway Construction Corporation at present. The delivery of the "heavy equipment for railway construction" will greatly enhance the hard power of China Railway Construction Corporation in bridge construction. The R8000-320 tower crane made a brilliant appearance at the off-line delivery ceremony held

in Changde, Hunan Province. At the first hoisting site of the equipment, the 5G remote control trial hoisting of Tianjin Branch 1500 kilometers away was also realized for the first time. The tower crane has a rated lifting torque of 8250 tons per meter, a maximum lifting capacity of 320 tons and a maximum lifting height of 400.3 meters, which is equivalent to lifting 230 cars to the height of 130 stories at one time. The upper part of the tower crane is equipped with L250-20 luffing tower crane, with a maximum lifting capacity of 20 tons and an installation arm length of 40 meters, which can cover the maintenance of the lifting mechanism of R8000 tower crane and the installation and removal of the attachment frame. If you want to do a good job at the

delivery ceremony

, you must first sharpen your tools. The group's investment in the construction of super-large tower cranes will add "diamond" to the enterprise's bridge construction, accumulate heavy equipment for the group to build a bridge brand, and greatly enhance the professional strength of bridge construction. Jointly developed

by China Railway Construction Bridge Bureau and Zoomlion, the R8000-320 tower crane has outstanding lifting performance and world-leading structural technology, integrating high-end, intelligent and green. Tower crane integrates 58 innovative scientific research achievements and 106 patented technologies, including more than 60 core key technologies, which not only realizes the powerful lifting performance of tower crane, but also ensures safety, convenience and reliability in transportation, assembly and disassembly, operation and maintenance.

R8000-320 tower crane

The tower crane is a "one tower and three machines" configuration with the coexistence of main and auxiliary towers, which can realize the coordinated hoisting of main and auxiliary towers, with efficient use and convenient maintenance; With strong modular design, only 5% of the parts need to be replaced to achieve the lifting performance of 12000 tons per meter, and the lifting performance is improved by 50%; The whole machine has more than 150 monitoring points, and more than 80 intelligent technologies have been created. The tower crane synchronously realizes a number of intelligent control technologies, such as anti-roof, anti-slip hook, anti-collision, anti-anchor, hook inclination detection and early warning, to fully ensure the safety and efficiency of construction. It is equipped with the latest intelligent hoisting high-precision matching measurement and control system to achieve precise hoisting; Build an intelligent command center to help upgrade the remote and digital management of equipment.

The tower crane will be mainly used in the construction of Zhangjinggao Yangtze River Bridge, the world's largest suspension bridge, after it is delivered to China Railway Construction Bridge Bureau. According to Zhang Hui, the project manager of the North Channel Bridge of Zhang Jinggao Yangtze River Bridge, "The North Channel Bridge adopts a portal structure steel tower with a total height of 217 meters, which fills in the blank of the performance of the steel tower of the suspension bridge of China Railway Construction Corporation. The hoisting construction of the steel tower segments through the tower crane requires a total of 6057.4 tons of hoisting, which is planned to be completed in 12 months." Zhang Jinggao Yangtze River Bridge is a key river-crossing channel promoted by the state during the 14th Five-Year Plan period, and is also a key implementation project of the comprehensive three-dimensional transportation corridor planning of the Yangtze River Economic Zone in Jiangsu Province. At the same time, the R4300-200 tower crane will be delivered to the construction site

of Zhangjinggao Yangtze River Bridge, which will be used in the construction of Guanyinsi Yangtze River Bridge of Wusong Expressway, the world's largest span highway cable-stayed bridge constructed by China Railway Construction Bridge Bureau. The tower crane has a rated lifting moment of 4300 tons per meter, a maximum lifting capacity of 200 tons, an independent height of 102 meters and a maximum lifting height of 415.3 meters, which is another powerful tool for the group's bridge construction.

At present, the Group has more than 50 sets of special construction equipment for bridges, such as super-large tower cranes, high-speed railway box girder lifting frames and crane ships. Among them, the first large crane ship of China Railway Construction Corporation, the 2200-ton crane ship of "Railway Construction Bridge 1", plays a role of "Hercules" on the water in the construction of the four bridges in Australia. In the future, it will purchase 1000 tons of full rotary crane ship, concrete mixing ship and other large-scale equipment. Special equipment has been developed for large-scale special bridge projects to provide strong equipment guarantee for the safe, high-quality and efficient completion of the construction of "high-end, difficult and dangerous" bridges.