Vibration analysis of elastic coupling

　　Vibration analysis is one of the techniques for predicting coupling misalignment. It can judge the gradual change trend of the equipment state, but when judging whether a device is in a misalignment state, it needs to have a lot of past data and examples for reference, and there are differences. The problem is the bearing, lubricating oil, coupling, or the fixed connection, so there are some limitations.Infrared photography technology can distinguish overheated parts such as bearings, motor housings, couplings, etc. when the equipment is in poor condition, and determine the alignment error of the coupling, and combine it with other prediction technologies such as vibration analysis. , Its effect will be good.
　　 Due to the existence of the star-shaped (type) elastic coupling, the vibration of the shafting is aggravated, so many professional and technical personnel have conducted research on this.Among them, the literature analyzed the torsional vibration of the gear coupling, mainly using the Fourier series solution method, and took the gap, damping, and excitation force as parameters to perform a nonlinear analysis on the torsional vibration of the gear coupling connecting shaft system; A large number of tests were carried out on the axial vibration of the gear coupling connecting shaft system, and the main reason for the axial vibration was qualitatively explained. It was pointed out that the axial vibration was mainly caused by the misalignment and the frictional force of the tooth surface. Larger axial movement will occur when there is no axial restoring force or thrust bearing.