Field Diagnosis Dethod for Vibration Fault of Power Output Components of Marine Main Engine

The problem of failure of power output components of marine main engine due to severe vibration is deeply studied. The structural characteristics of high elastic coupling, universal coupling, intermediate support and shock absorber are analyzed in detail. The mechanical models of rotor unbalance, shafting misalignment, mechanical loosening and bearing failure are established, and their vibration and spectrum characteristics are studied. A set of field diagnosis method of vibration fault based on equipment spot inspection is proposed, which realizes the simple, accurate and reliable vibration cause location of the equipment.