Gear fault diagnosis device and method

Abstract

The invention provides a gear fault diagnosis device and method. The gear fault diagnosis device comprises a vibration detection disc, a vibration sensor, a data collector and a fault diagnosis terminal, wherein the vibration detection disc is mounted on a transmission shaft of a gear to be detected; the vibration sensor is used for detecting the vibration of the vibration detection disc; the data collector is connected with the vibrator sensor; and the fault diagnosis terminal is connected with the data collector. According to the gear fault diagnosis device and method disclosed by the invention, the vibration detection disc is mounted on the transmission shaft of the gear to be detected, and the transmission shaft is vibrated along the vibration of the gear to be detected; the vibration detection disc is vibrated along the vibration of the transmission shaft; the vibration detection disc can reflect a vibration condition of the gear to be detected so as to get rid of influences of the vibration of a box body of a gearbox or the vibration of other vibration sources of a system; and the vibration of the vibration detection disc is detected through the vibration sensor, and a fault characteristic of the gear to be detected can be accurately extracted through analysis and treatment of the data collector and the fault diagnosis terminal, so that effective diagnosis of gear faults is realized.

Description

technical field [0001] The invention relates to the field of gears, in particular to a gear fault diagnosis device and method. Background technique [0002] At present, the gear box vibration signal is generally collected in gear fault diagnosis. Install a vibration acceleration sensor on the bearing seat of the box to obtain the vibration signal of the box, and perform signal analysis and processing on the vibration signal of the box, such as synchronous filtering, spectrum analysis, cepstrum analysis, wavelet analysis, etc., to extract the meshing of the gear to be diagnosed Vibration signal to realize gear fault diagnosis. However, since the box vibration signal includes the meshing vibration of each gear and the response of other vibration sources in the machine system, the signal-to-noise ratio of the gear to be diagnosed is very poor. It is very difficult to separate from strong noise. However, signal processing methods such as time-domain synchronous averaging cann...

AI Technical Summary

Problems solved by technology

However, since the box vibration signal includes the meshing vibration of each gear and the response of other vibration sources in the machine system, the signal-to-noise ratio of the gear to be diagnosed is very poor. It is very difficult to separate from strong noise

However, signal processing methods such as time-domain synchronous averaging cannot achieve good results. This is because while suppressing noise, some useful signals, especially high-frequency components in the signal, are also suppressed to a certain extent. The diagnosis of early faults is very disadvantageous

Therefore, it is difficult to realize the effective diagnosis of gear faults by using the vibration signal of the box

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