The hottest intelligent bolt black technology tran

2022-07-24
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Intelligent bolt "black technology" has transformed the market into a civil market of billions of yuan. Bolts are known as the rice of industry and are widely used in machinery, electronics, electric power, vehicles, ships, aviation, construction and other industries. The bolts are small and have large energy, and the looseness of bolts at key parts may cause aircraft crash, plant collapse and Bridge fracture, resulting in incalculable losses. Recently, by the aviation industry, we may be able to adjust some materials that constitute the internal structure of aircraft. Bolts are called industrial meters and are widely used in machinery, electronics, electric power, vehicles, ships, aviation, construction and other industries. The bolts are small in size and large in energy. The loosening of bolts at key parts may cause aircraft crash, plant collapse, bridge fracture... And the resulting losses are incalculable. Recently, the intelligent bolt developed by a post-80s engineer of Shenyang Aircraft Design and Research Institute of aviation industry has attracted great attention at home and abroad. This invention can monitor the load and status of the bolt in real time, providing a "safety lock" for equipment (Engineering) safety

on December 5, Wang Jianzhi, the inventor of intelligent bolt, was interviewed. He graduated from Nanjing University of Aeronautics and Astronautics and is a senior engineer in the comprehensive strength Department of Shenyang Aircraft Design and Research Institute. Now, he has another identity: technical director of Shenyang Zhihang Intelligent System Co., Ltd., a private enterprise invested by social capital and responsible for the transformation of the military "black technology" market

the smart bolt placed in the laboratory looks uncomplicated. There is a 1mm small hole on the bolt. The small optical fiber and grating sensors are hidden in the hole, and the outgoing optical fiber is connected to the monitoring instrument. "With the sensor function added to the ordinary bolt, the bolt can actively sense the load force, monitor its own status in real time, and give an early warning if there are signs of loosening and fracture."

the aircraft body is composed of many parts, and many bolts are required at the splicing part. During long-term flight, the connecting bolts at the structural principle position of the key abrasion resistance testing machine can not bear the load or reach the "metal fatigue period", and the bolts will have problems or even break, directly endangering the safety of the whole aircraft. In recent years, how to accurately measure the bolt load is a hot and difficult point in the industry. Some people try to install ultrasonic statistical sensors outside the bolts. Due to the limitations of environment, conditions and other factors, it is difficult to obtain accurate data of internal forces, which is not widely used

"the optical fiber of the sensor is slender, and the bolt is axially slender, so I wonder if I can put the optical fiber into the bolt." Driven by this idea, Wang Jianzhi and his team have explored for five years, successfully mastered the key technologies such as deep hole machining of high-strength bolts, fiber Bragg grating surface treatment, sensor packaging design, sensor signal processing and basic work completion identification under strong noise environment, and developed intelligent bolt prototype products of various materials. After laboratory and aircraft tests, the bolt load error measured by intelligent bolts is plus or minus 1%, Suitable for high precision measurement

"derived from the army and integrated into the people." Smart bolts are not only widely used in military products, but also have a broader civil market prospect. The market demand of domestic power, shipbuilding, construction, high-speed rail and other industries alone has reached 2.5 billion yuan. After active docking in Huanggu District of Shenyang, Shenyang Aircraft Design and research institute took the intelligent bolt as the first military civilian integration pilot project and authorized the invention patent to Shenyang Zhihang Intelligent System Co., Ltd. to be responsible for the transformation of the military "black technology" market

it is revealed that the first batch of smart bolts customized for customers by Shenyang Zhihang Intelligent System Co., Ltd. has been produced and will be installed on a ship and high-speed rail bridge in the near future. A military "black technology" produced in the laboratory will benefit the whole society. Following this path, under the background of the country's vigorous implementation of the development of military civilian integration, more and more military technology associations of Shenyang Aircraft Design and Research Institute have gradually realized civil use

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