Study on Monitoring System of Bolt Preload for Main Bearing of Wind Power

According to solve the problem that the main bearing of large wind power is prone to axial vibration failure, based on the changing characteristics of the preload of end cap bolts, this paper intends to develop a collection and monitoring system for the preload of bolts. The system adopts a gasket type pressure sensor measurement method, and uses DH5902N data acquisition card and computer as hardware to realize the data acquisition and analysis of bolt preload. The strain gauge detection model applied to the main bearing of wind turbine is constructed, and the axial force detection of the main bearing of wind turbine is realized by establishing the bolt preload correction algorithm based on the sensor data measurement. LabVIEW is selected as the software development platform to realize the functions of channel data acquisition display and light alarm. Finally, the stress monitoring of the main bearing of wind power is realized.