In recent years, China Railway Group has actively promoted intelligent construction, fully implemented digital and intelligent upgrade projects, accelerated the cultivation of a new ecology of digital intelligent construction industry, and boosted the high-quality development of the "14th Five-Year Plan". China Railway Fourth Bureau quickly implemented the strategic deployment of digital intelligence construction as the main attack direction, promoted industrial technological transformation and optimization and upgrading, seized opportunities, improved quality and transformed, relying on the construction of Zhangjihuai high-speed rail and the "Zhai Changqing National Model Worker Innovation Studio" to form an "industry" The integrated R&D team of "study, research and use" conducts research on the technology of intelligent ballastless track laying equipment, and strives to become the vanguard of the intelligent upgrade of construction technology in the railway construction industry and even the national construction industry.

"The WPZ-500 type ballastless track intelligent track laying unit integrates tires, wheel rails and crawler tracks. It consists of four long rail intelligent sorting vehicles, long rail intelligent push vehicles, long rail intelligent roller recovery vehicles, and long rail intelligent tractors. It is composed of two equipment, making full use of cutting-edge high-tech such as intelligent robots, Internet of Things, big data, laser scanning precise positioning, AGV automatic tracking, etc., which can complete the precise traction and push of long rails, precise placement of rollers, automatic recycling, and stacking. A series of procedures such as loading and unloading." Introduced by the relevant person in charge of China Railway Fourth Bureau and Eighth Branch.

In addition, the unit has also been intelligently upgraded in terms of operation control, auxiliary control, remote operation and maintenance, and construction organization. Compared with the traditional track laying method, this unit has reduced auxiliary operators by 63% and increased its mechanization to 90%. In special areas such as lack of labor, high cold, and high altitude, the promotion is of greater significance. At present, the equipment has completed the declaration of 17 invention and utility model patents, and has been accepted by the State Intellectual Property Office for patent applications.

It is reported that the Zhangjihuai high-speed rail is known as the "most beautiful poverty alleviation high-speed rail". The line passes through 6 formerly national-level poor counties such as Mayang, Fenghuang and Yongshun, as well as famous scenic spots and cultural cities such as Zhangjiajie, Furong Ancient Town, and Fenghuang Ancient City, with a total length of 246 thousand. M, 8 stations are set up, and the design speed is 350 km/h. After the completion and opening to traffic, the operating time of Huaihua-Zhangjiajie trains will be shortened from 3.5 hours to about one hour. Cultural and tourist attractions such as Phoenix Ancient Town and Jishou will also end the history of no high-speed railways. This will help promote the economic construction of the central and western regions and speed up the development of the old, young, and border areas along the line. Development is of great significance. At present, the main project of Zhangjihuai high-speed railway has been basically completed, and it is expected to be put into operation within this year. Editor/Wang Jiangwen