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我国拥有自主知识产权的世界最小直径硬岩掘进机下线,标志着我国最小掘进机研制技术和产业化达到世界先进水平。据了解,该硬岩掘进机由中国中铁工程装备集团有限公司自主研制,其开挖直径为3.53m,组装全长达到235m,由于要在较小的空间布局数百万的零件,内部结构极其复杂,设计研发和生产制造难度前所未有。中铁装备集团采用全新设计,提高了刀盘强度和安装精度,能够有效预防焊接变
China has independent intellectual property rights of the world’s smallest diameter hard rock roadheader off the assembly line, marking China’s smallest roadheader development technology and industrialization reached the world advanced level. It is understood that the hard rock roadheader by the China Railway Engineering Equipment Group Co., Ltd. independently developed, the excavation diameter of 3.53m, assembly length of 235m, due to the layout of the small space of millions of parts, the internal structure is extremely Complex, design R & D and manufacturing more difficult than ever. China Railway Equipment Group adopted a new design to improve cutter strength and installation accuracy, which can effectively prevent welding changes