The evaluation committee was chaired by Professor Li Ziguang from Changsha University of Science and Technology, Professor Zhou Zhixiong from Hunan University, Professor Hu Junke from Central South University, Wei Jue, a research fellow from Zoomlion, and Yang Shujie from the Changsha Institute of Mine Research, and from the National Construction Machinery Quality Supervision and Inspection Center. Senior Engineer Wang Huabin and Senior Engineer Peng Renjun of China Railway Fifth Group Co., Ltd. consisted of seven experts. At the meeting, the experts listened carefully to the detailed report of the Wuxin Tunnel installation and believed that the project had the following innovations: (1) The use of a mature automobile chassis can take into account the construction requirements of multiple tunnel heads, with strong mobility, convenient transition, and high construction efficiency. (2) Developed the pumping hydraulic system's peak-filling technique to reduce the pulsation during concrete spraying, reduce the segregation of concrete and excessive accumulation of accelerators, and improve the injection quality. (3) Using CAN bus control technology, equipment operation realizes functions such as automatic control, real-time monitoring, remote fault diagnosis and maintenance. (4) Developed a kind of extended concrete spraying vehicle manipulator with high strength, good rigidity, light weight and wide construction range. The evaluation committee reviewed the relevant technical documents, rigorously, conscientiously, and scientifically, questioned and answered questions about the scientificity, creativity, advancement, and applicability of scientific and technological achievements, and unanimously passed evaluation of scientific and technological achievements, and the project achievements ranked at the international advanced level. . Since its establishment, Wuxin Tunnel has been committed to research and innovation and has achieved a series of scientific and technological achievements with strong technological innovation, high promotion and application rate, and good economic benefits. There are currently 160 authorized patents, of which 28 are invention patents, and 2 are Won the Chinese patent award and established a complete intellectual property protection system. Five new tunnels will continue to work hard to further improve the research results and strive to obtain more obvious economic and social benefits. (This article is from Wuxin Tunnel)
Machining is a term used to describe a variety of material removal processes in which a cutting tool removes unwanted material from a workpiece to produce the desired shape. The workpiece is typically cut from a larger piece of stock, which is available in a variety of standard shapes, such as flat sheets, solid bars, hollow tubes, and shaped beams. Machining can also be performed on an existing part, such as a casting or forging,or sand castings,or die castings,ect.
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Parts that are machined from a pre-shaped workpiece are typically cubic or cylindrical in their overall shape, but their individual features may be quite complex. Machining can be used to create a variety of features including holes, slots, pockets, flat surfaces, and even complex surface contours. Also, while machined parts are typically metal, almost all materials can be machined, including metals, plastics, composites, and wood. For these reasons, machining is often considered the most common and versatile of all manufacturing processes.
On December 19, 2017, Hunan Machinery Industry Association organized authoritative experts to hold the “CHP25B Truck-mounted Concrete Shotcrete†project scientific and technological achievements evaluation meeting completed by Hunan Wuxin Tunnel Intelligent Equipment Co., Ltd. in Changsha City.
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