On January 17, the reporter walked into the assembly workshop of China Railway Engineering Equipment Group Co., Ltd. (hereinafter referred to as "China Railway Equipment") located in Zhengzhou City, Henan Province. The lively scene in front of him instantly "isolated" the cold outdoors. Welding flowers splashed like fireworks, staff climbed high to assemble and debug, bent over and painted; mechanical roars in their ears, cranes and cutting machines operated in an orderly manner, and there were also the sound of tool parts colliding and knocking from time to time.
China Railway Equipment is a high-end equipment manufacturing enterprise specializing in the research, development, manufacturing and services of tunnel and underground engineering equipment. It has built the largest shield structure/TBM R&D and manufacturing base in Zhengzhou, and various products are used in more than 40 cities in China. In recent years, enterprises have followed the "Belt and Road" initiative, and their influence in the international shield market has increased day by day. Every year around the Spring Festival, it has become the peak period for order delivery at home and abroad. The staff have long been used to this busyness.
"We have a total of 4 shield machine production lines in our Zhengzhou workshop, which are currently operating at full capacity. We are making every effort to make a batch of overseas orders. Some orders have been accepted, and some are preparing for commissioning." Following the finger of Li Ning, deputy chief engineer and director of the production department of China Railway Equipment Shield Company, the reporter saw a shield machine "China Railway No. 911" that will be exported to Singapore after the Spring Festival. Because the issuance time is the earliest, all preparations must be completed before the Spring Festival holiday.
The preparation process before the shield machine "going to sea" is very complicated. The wrapping pipeline must be handled first, and then the cutter plate, shield, main drive and supporting trailer must be removed. Only after maintenance and cleaning can the coating be coated. Among them, the operation of key components and moisture-proof and salt-alkali measures are the links that Li Ning is most concerned about. In order to ensure on-time and smooth delivery, he has to inspect the workshop at least twice a day. "Every order is the customer's trust in China Railway Equipment, and we must ensure that all links of the machine are reliable and stable."
According to relevant data, China Railway Equipment products have successfully entered 34 overseas countries and regions, with a total of more than 120 overseas orders. In the fierce international market competition environment, how to maintain the market advantage of products?
"We incorporate the concept of green shield in production, and can improve machine intelligent control and low-carbon environmental protection performance in terms of energy conservation, emission reduction, consumption reduction, etc. according to different application scenarios and customization needs." Pang Peiyan, deputy director of China Railway Equipment Boring Machine Research Institute, told reporters that on the one hand, China Railway Equipment has introduced four core intelligent manufacturing technology equipment, namely intelligent design, intelligent manufacturing, intelligent operation and intelligent warehousing, and has the flexible intelligent manufacturing capabilities of the full series of shield machines from 4 to 16 meters in diameter; on the other hand, through innovative technological breakthroughs, mastering continuous excavation technology, rapid mold replacement technology, etc., to greatly improve the excavation efficiency of the shield machine; at the same time, build an intelligent operation and maintenance platform, build a digging construction data transmission system and cloud computing platform, and realize remote intelligent command of the shield machine.
The promotion of new technologies has attracted many new customers, and the order of Singapore’s “China Railway No. 911” is one of them. According to Pompeiyan, in response to the specific needs of customers, China Railway Equipment has carefully equipped this shield machine with a series of cutting-edge technologies such as slag viscosity detection system and double-layer shield recycling system. Through intelligent calculation and customized reuse solutions, it can not only achieve accurate control of the construction process, but also effectively help construction companies reduce construction costs and create greater value for customers.
In the TBM industrialization center less than 100 meters away from the assembly workshop, a shield machine with an excavation diameter of more than 15 meters is being assembled quickly. It is expected to be sent to Australia in May this year and will become the largest diameter shield machine exported overseas by China Railway Equipment. The reporter learned that this machine also has many intelligent and green technologies, including a knife change robot, an automatic transportation system, a sleeper grabbing robot, a mud cake erosion robot, etc., to ensure the safe and efficient excavation of the shield machine and provide important technical support for engineering construction.
"Exporting a shield machine means sending out a Chinese business card." A relevant person in charge of China Railway Equipment said. China Railway Equipment is keeping pace with market demand and is striving to plan the research and development of the next generation of excavation equipment. By continuously expanding product application scenarios, it continues to promote the high-end, intelligent and green transformation of shield machines. Central Commission for Discipline Inspection and the National Supervisory Commission website Chen Yao reported from Zhengzhou, Henan
