China's first set of high-speed concrete construction equipment is put into operation

China's first set of high-speed concrete construction equipment is put into operation

The China Railway 25 Bureau adopted the special equipment for concrete machinery provided by Zoomlion. Recently, it successfully produced the first standard box girder with a weight of 900 tons in the pontoon river beam field of the Macheng Hefei (Han) Passenger Dedicated Line in Hubei. . This marks that China's first set of concrete machinery-specific complete sets of equipment for high-speed railway construction has entered normal operation, and it also provides a useful reference model for equipment selection of related beam-making units.
The Hewu high-speed railway is an important part of the newly planned Hu-Han-Rong passage of the state. It has an investment of 18.7 billion yuan and starts from Hefei in the east, passing through the hinterland of Dabie Mountain to Macheng to Wuhan. After the completion of the traffic, the time from Hefei to Wuhan will be significantly reduced from the current 10 hours to 2 hours.
Due to the high standard of high-speed railway concrete construction, strict requirements, heavy load, and difficulty in pumping, general equipment is difficult to perform. As early as 2005, Zoomlion began tracking and researching high-speed rail projects, and set up a project team to tackle the problem. Through research on high-speed rail construction specifications, construction techniques and construction conditions, and repeated discussions and exchanges with relevant experts of China Railway System, the company has gradually formed a unique Zhonglian, which can meet the diversity of high-speed railway construction conditions and environmental differences. High-speed railway special equipment design plan.
Based on the profound technical foundation of concrete machinery and the experience of construction under various special conditions for many years, Zoomlion has modified and optimized all aspects of high-strength concrete production such as mixing and pumping to ensure construction requirements. High standards and high reliability of the construction process. At the same time, it also makes full use of its own equipment supporting capacity. From the beginning, the mixing, pumping and fabric links are considered as a large system, and the units are connected into a perfect unit to make the whole system more coordinated and flexible.
For this construction, a Zoomlion 2HZS120T twin concrete mixing station, two HBT80·13·132·ST pumps and two HG19 distributors were integrated. Among them, the mixing station was specially designed according to the technical requirements of high-speed high-strength concrete and the site conditions. The mixing station was selected as a compact and shallow pit design to minimize the equipment footprint and excavation workload; the metering method and accuracy were also targeted to meet the high-precision batching requirements of the high-speed rail project; The reliability is optimized from the aspects of structure, component selection and control to ensure continuous construction with high load. The equipment not only can produce high-strength concrete, but also can produce commodity concrete through button switching, which is convenient and quick to convert.
HBT80·13·132·ST concrete pump is specially developed for the characteristics of high-speed railway construction process. By optimizing the pumping, distribution and hopper system, it has higher suction efficiency and better power, and is more suitable for high-performance concrete. Pumping.
The HG19 distribution machine is completely developed for the high-speed rail project. It has a simple structure, convenient operation, flexible and economical, and can realize the combination of multiple foundations of a single cloth machine. The cloth machine can be hoisted as a whole, and the conversion foundation is convenient and fast. The two cloth machines can meet the requirements of prefabrication of high iron box beams, and it is an ideal equipment for prefabrication of large box beams.

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