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With the continuous construction of infrastructure such as high-speed rail and subway engineering, complete sets of tunnel and underground space equipment are receiving more and more attention from construction companies. At present, there are only a handful of European and American companies that manufacture tunnel excavators worldwide. Due to market positioning and price factors, they have not been widely used in the domestic market. Xugong Mining Machinery Division adheres to the product concept of “leading technology, not destroyingâ€, based on domestic high-speed rail and subway construction, and developed the first tunnel excavator XE400T in China. The equipment has excellent performance and good adaptability, which can help users to determine the excavation amount more accurately. The number of on-site workers is reduced by about 40%, the operating efficiency is increased by 2 times, and the construction cost is reduced by more than 50%. The introduction of this equipment has added a new weapon to the Xugong tunnel and underground space equipment.
"At present, the domestic tunnel construction generally adopts the blasting process, which not only can not accurately control the deviation, but also has a high risk factor." During the project investigation, a project manager with nearly 10 years of construction experience in the industry said. According to reports, the traditional excavation process is mainly artificial, the process efficiency is low, the labor cost is high, the construction accuracy is poor, the safety cost is high, the construction period pressure is very high, some projects use foreign construction equipment, but the purchase price and the use cost are very high. And maintenance is not timely. With the development trend of mechanized construction instead of labor, all construction enterprises have greater demand for tunnel construction equipment, and the market space is huge in the future.
“At the beginning of the project, we focused on these construction difficulties. The product development requirements are close to the actual working conditions, enhance the adaptive design, and finally choose the path of joint development with the customer.†Project designer Dong Yuzhong said. After nearly one year of hard work, Xugong R&D team went deep into the high-speed rail tunnel construction site, communicated directly with customers, collected customer needs, fully grasped the tunnel construction method, and formulated technical design schemes so that the products could fully meet the tunnel construction requirements at the beginning of development. .
The product can easily cope with the common noise, dust, heat, high-intensity vibration and impact working environment in tunnel engineering, and overcomes more than ten core technologies such as tunnel environment power matching, tunnel mining special tooling structure optimization, intelligent tunneling system, etc. Formed five major product highlights, with 15 core patents, reaching the international advanced level.
The biggest highlight of the XE400T is that the machine is equipped with an intelligent tunneling system. In the conventional operation, due to the large dust concentration, the driver's viewing line of sight is limited, resulting in limited operation. With this system, the driver can determine the excavation method and the amount of excavation according to the monitor display content in the comfortable cockpit, and use the joystick to excavate in real time. The prominent color on the screen can help the driver to locate the excavation direction, making the passage more To be reasonable.
The XE400T adopts high-pressure common rail fuel injection and exhaust gas recirculation technologies, which are not easy to spread the fumes and dust generated in tunnel construction operations, optimize the design of the intake system, and improve the service life of the equipment by more than 15%. The working device adopts a tunnel-specific structure, which makes the excavator better adapt to the tunnel section, and it is necessary to move the position in a limited space to increase the excavation range. The application of new vehicle safety technology effectively prevents damage to equipment and personnel from falling rocks. At the same time, the independent development of multi-functional machine intelligent control system, can be equipped with crushers, milling heads, quick-change devices, tunnel buckets and other tools to achieve a multi-functional machine.
The launch of Xugong XE400T tunnel excavator will further promote the optimization of tunnel construction environment and the progress of construction technology, break the monopoly of international brands in this field, and enhance the technical strength of China's research and development of complete equipment in tunnels and underground space.
