April 28，Hunan Province celebrates“May Day”International Labor Day and Commendation Conference for Advanced Collectives and Individuals Held in Changsha。The Congress won the National Award for Hunan Province、May 1st Labor Medal of Hunan Province、The certificate of merit and the advanced collectives and individuals of the National Worker Pioneer were commended.，Zhang Shuaikun, Vice President of Railway Construction Heavy Industry Roadheader Research and Design Institute, won the National May Day Labor Medal。
At the meeting，Zhang Shuaikun spoke as an award-winning representative.，He shared on the spot that he led the team to tackle key technical problems in Railway Construction Heavy Industry.，Break foreign monopolies，Help domestic Shield Machine start from scratch、The Story of the Struggle of Rapid Rise。
Zhang Shuaikun spoke at the conference.
/Zhang Shuaikun：Brave to Be a Struggler of a Powerful Country in the New Era/
International Workers' Day
TBM Research and Design Institute of China Railway Construction Heavy Industry
Vice Dean Zhang Shuaikun
He was awarded the locomotive medal of the All-China Railway Federation of Trade Unions.、First Huxiang Craftsman Nomination Award、Top Ten Models of China Railway Construction Corporation（Team）Wait for the honor。In 2023, he was awarded the National May Day Labor Medal、Model worker of Hunan Province。
Zhang Shuaikun，Vice President of TBM Research and Design Institute of China Railway Construction Heavy Industry。Fifteen years ago，He works as a shield driver.，It's imported.“Ocean shield”，By foreigners everywhere“Stuck in the neck”。Today，Zhang Shuaikun led the team to independently develop the domestic Shield Machine in the Railway Construction Heavy Industry.，Firmly grasp the key core technology in their own hands.，So that the most important tool of the country is no longer controlled by others。
Only self-reliance and self-improvement，Domestic high-end equipment can really“ Stand up ”。Shield Machine is also called“Underground aircraft carrier”“Steel dragon”，More than a decade ago.，Spend more than 200 million yuan“The sky-high price”Buy one“Ocean shield”，Not only is the delivery cycle as long as two years，And the service can't keep up，Even one screw is damaged.，Have to spend dozens of times the price to buy from overseas.，Even foreign service personnel are charged by the hour from the time they leave the country.，And request first class.、Five-star hotel suites and other treatment。Even an ordinary maintenance，Also pull out a cordon.，Keep the Chinese away.。
One time，The shield machine assembly system shakes.，Cause the whole machine“Paralysis”，Three groups of foreign personnel were invited.，It hasn't been repaired for more than a month.，The daily loss is more than 200000 yuan.。When the Chinese side offered to repair it by itself.，Foreign personnel refused to provide information，Or even threaten to no longer provide product warranty.。It's a critical moment，The project team withstood the pressure to form its own team.，Zhang Shuaikun knows operation and maintenance，Become a core member。
Zhang Shuaikun's team translated the instructions.，While disassembling the parts，After seven days and seven nights of research and comparison.，Find out the unqualified motor valve cores，Rapid localization substitution，Finally, the foreign side lowered its head.。From now on，Zhang Shuaikun stepped into the research and development position.，Began to participate in the development of domestic shield machine。
Zhang Shuaikun and his team members studied and discussed the drawings together.
Only independent innovation，Domestic high-end equipment can really“Get strong”。Shield machine is a customized high-end equipment.，A large shield machine consists of tens of thousands of parts.，Each design should be combined with engineering practice and personalized research.，The technology is extremely difficult。
2018，Railway Construction Heavy Industry Receives the Construction Task of the First River-crossing Tunnel in Changde，The shield machine is going to dive into the river.，Challenging high water pressure and loose pebble layer。Every 10 meters of equipment descending，Increase by one atmosphere.，Divers have to drill into the hyperbaric chamber more than 40 meters deep at any time to replace the worn tools.，It takes 1 day to replace each tool，And the risk is great。Zhang Shuaikun and his team members have done more than 300 high water pressure tests.，Successful research and development“Normal pressure tool change”Technology，It only takes two hours.。This unique skill fills the gap in the industry.，Successfully applied to the deepest underwater tunnel shield machine in China“Shenjiang No.1”And so on dozens of Taiwan's most important weapon.，Set the fastest record in the industry。
Zhang Shuaikun and his team conducted field research
Only excellence leads，Domestic high-end equipment can really“Walk out”。In the shield line“River, lake and sea city”In the actual combat of innovation，Zhang Shuaikun and his team have nurtured more than 120 innovative talents of high-end underground equipment.，Undertake the state、7 provincial and ministerial projects，More than 300 authorized patents。
The diameter of the Roadheader of China Railway Construction Heavy Industry is from 0..5 meters to 23 meters，Covering more than 130 categories of products。2020，Zhang Shuaikun's team spent 7 months.，Successfully developed the first domestic 16-meter super-large diameter shield machine“Jinghua”，Cast the greatest glory made in China，Be selected《Questions and Answers on the Study of Xi Jinping's Socialist Thought with Chinese Characteristics in the New Era》，Become a vivid case from Made in China to Created in China，And join the country with honor.“The 13th Five-Year Plan”Science and Technology Innovation Achievement Exhibition and“Strive for a new era”Theme Achievement Exhibition，Be inspected by Party and state leaders。
The shield machine developed and manufactured by Railway Construction Heavy Industry has been exported to many overseas markets.
Nowadays，The products of China Railway Construction Heavy Industries are exported to dozens of countries and regions.，Export Chinese-style modern scientific and technological achievements and Chinese standards to foreign countries，Realize from“Run with”“And run”To“Lead the race”，It opens the way for China to equip the world with equipment.。
