As the highest award in the field of patents in my country, on June 25, 2021, the State Intellectual Property Office issued the awarding decision of the 22nd China Patent Awards. China Railway Construction Heavy Industry "Open Type Roadheader (ZL201610784961.5)" won the patent gold medal. "A cutter head drive system for TBM (ZL201610738807.4)" and "Self-propelled cotton picker (ZL201830267352.2)" won the China Patent Excellence Award and China Design Excellence Award respectively. This is the 7th consecutive year that China Railway Construction Heavy Industry has won the China Patent Award. Up to now, it has won 1 China Patent Gold Award, 1 Silver Award, and 11 Excellence Awards.

The open tunnel boring machine, also known as TBM, is mainly used for hard rock tunneling. It has the advantages of safety, efficiency, high quality, greenness and precision, and represents a country's high-end equipment and technology level. The gold medal patent "open type roadheader" solves the construction problems of the cutterhead shield being easily jammed due to the shrinkage of the tunnel diameter under the conditions of large buried depth and high ground stress surrounding rock, and fills the large range of roadheaders. The gap in diameter expansion technology has overcome the three major technical problems recognized by the global TBM industry of "unstable support, unsatisfactory digging, and unsound support", and has promoted domestic TBMs "from scratch" and "from existence to excellence". This patented product has been successfully applied to the largest tunnelling machine cluster project in the world, and has been successfully applied in more than 100 major domestic and foreign projects such as the Baolin Tunnel in Northern Hubei and the San Gawang Hydropower Station in Peru. It is recognized as a "manufacturing industry" by the Ministry of Industry and Information Technology of China. Single champion product".

This time, "a cutter head drive system for TBM", which won the China Patent Excellence Award, broke through the TBM electro-hydraulic hybrid drive technology. Through the electro-hydraulic hybrid synchronous coupling technology, the problem of the cutter head chucking machine was solved. The “self-propelled cotton picker” that won the China Outstanding Design Award vividly combines brand characteristics with product functional design. The product has been widely used in Xinjiang, which has greatly increased the mechanization rate of Xinjiang cotton picking. In 2021, it won the People’s Daily and other mainstream media Like it, it was posted on Weibo hot search, with more than 100 million views, and was hailed as the "domestic cotton picking artifact".

Keywords: engineering news, state-owned enterprises

The China Patent Award is the only government award in China that specifically rewards inventions and creations granted patent rights, and is recognized by the United Nations World Intellectual Property Organization (WIPO). China Railway Construction Heavy Industry has always insisted on independent innovation, the combination of production, education and research, and the high-quality development of intellectual property as the guide. In the future, it will continue to strengthen basic research, applied basic research, and key core technology research, and is determined to achieve the goal from "China Equipment China" to The goal of "China's equipment and the world".Editor/Xing Wentao