Gear Pump Root Cause Failure Analysis Using Vibrations Analysis and Signal Processing

摘要

In this paper, gear pump failure because of bush bearing looseness is investigated. Vibrations analysis is one of the main manners of the diagnosis of mechanical failure. After bearing looseness, gears clearance is changed because of change between gears' clearances. Time signal, spectrum velocity, spectrum accelerations, envelope velocity, and envelope accelerations are methods of vibrations analysis and signal processing to diagnose a failure in rotary machines. In this study, bush bearing failure and adhesive wear in gear using signal processing including machine spectrum, envelope spectrum acceleration, and acceleration spectrum are detected. Gear failure because of bush looseness has many symptoms that these symptoms are pronounced in this research. The best time for failure detection is the beginning of failure so the beginning of bush and worn gear's teeth failure was found in this paper.