En
The wind turbine is expensive, and its operating environment is harsh. In the process of operation, it is subjected to the comprehensive action of various loads such as vibration and torsion for a long time, and various components and connecting fasteners between components will be damaged in different degrees. The bolts in each part, especially the blade root bolts, often suffer from bolt tightening reduction or even bolt fracture. If the fault is not found in time, it will lead to equipment accidents of wind turbines, resulting in huge economic losses, and even serious personal injury accidents. According to statistics, every year, serious equipment accidents such as tower toppling and blade falling off will occur due to bolt loosening and fracture.
The wind turbine operation site is usually located in the offshore and remote mountainous areas, so it is difficult, time-consuming and labor-intensive, and even requires downtime for maintenance, which leads to expensive maintenance.
