Domestic large-tonnage crawler crane breaks the frontier of foreign technology monopoly station

The successive launch of China-made large-tonnage crawler cranes indicates that the intellectual property barriers of leading foreign companies in the field of hoisting machinery have been gradually overcome by China’s independent intellectual property rights. The domestic construction machinery enterprises have already broken the monopoly of foreign 3000 ton class crawler cranes, standing on the forefront of the global hoisting machinery industry, and it also marks that China's construction machinery research and development level has entered a new height.

The independent intellectual property rights escort cranes landing on the global stage Zoomlion ZCC3200NP crawler crane project development brings together Zoomlion's top experts including two national research institutes, including research and development, manufacturing, and management personnel. More than 100 special task teams have made major breakthroughs in key technologies such as “machinery, structure, calculation, hydraulics, and electrical engineering” through a series of independent innovations in research and development ideas, project organization, and research and development methods. According to reports, the product has more than 20 patented technologies, and the overall plan of the parallel-arms and front-to-front tracked vehicles is a breakthrough in the design philosophy of traditional crawler cranes, which has resulted in a breakthrough in product safety.

The R&D of Sany SCC86000TM (3600 tons) crawler crane adopts advanced limit state design method, digital prototype and TopDown design method, which breaks through the design problems of non-linear and large-deformation metal structures. It has also applied GB3811-2008 to nuclear applications. The high-risk coefficient recommended for industrial cranes has made substantial breakthroughs in structural design and control systems. At present, the crawler crane has applied for 30 invention patents. Among them, the double main chord tube single arm section technology and dual super lift trolley technology have applied for international invention patents in Germany, the United States and other countries.

Strong technical support has made domestically produced crawler cranes attract attention in the international arena. The mine accident rescue in Chile made "Made in China" appear in the global field of vision. The Japanese nuclear power station rescue incident made "Made in China" win more eyes and trust. Under the trend of the industry's vigorous development of large-tonnage cranes, China now has world-class megatonne product R&D and manufacturing capabilities. The birth of a number of independent intellectual property rights is also making China's lifting machinery manufacturing industry an international leader.

Large-tonnage development trend of nuclear power is still strong The development situation of large-tonnage crawler cranes is flourishing, but the explosion of nuclear power in Japan in March 2011 undoubtedly poured a cold water. At present, large-scale domestic lifting machinery is mainly used in the construction of nuclear power, wind power, and water conservancy. Japan’s nuclear power leaked a warning bell for global nuclear power construction. The construction of nuclear power in various countries has been halted. China’s State Council has also requested the suspension of the approval of nuclear power projects. For a time, the construction of nuclear power, which once had a vanguard, was in a dilemma. According to reports, oversized tonnage caterpillar cranes are mostly custom-made products and are used in large-scale nuclear power plant construction. Now that the prospects for the construction of nuclear power are not clear, can the large tonnage development trend of crawler cranes continue?