The root cause of failure caused by high-power gear reduction

High-power gear reducer is a very important gear transmission product, and gear transmission is one of the main ways of mechanical transmission. At present, gear reducers are used in metallurgy, petrochemical, mining, transportation and other industrial sectors. , also used gears. However, due to the harsh working environment of the gear location and other reasons, it is easy to be harmed and faulty. According to statistics, 80% of the faults in high-power gear reduction machinery are caused by gears.

There are various failure modes of gears. Among them, the more common crack failure is a more serious failure mode. The further expansion of the crack may lead to fatigue fracture of the gear teeth, and even cause the failure of the entire gear. Therefore, it is very important to analyze the fault mechanism of cracks and find a useful method for diagnosing crack faults.

For a long time, people have carried out a lot of research on the diagnosis method of tooth root cracks, and achieved a lot of results. The conventional diagnosis method is vibration spectrum analysis, which is based on the traditional vibration theory, uses the diagnosis instrument to collect its vibration data and waveform, and then analyzes and diagnoses to find out the cause and location of the fault. However, the prerequisite for this is that the fault model must be established accurately so that the vibration signal in the fault state can be correctly identified. This method requires the diagnostic personnel to have rich fault diagnosis and diagnosis experience.

The failure of the gear will directly affect the safe and reliable operation of the high-power gear reducer, and even lead to the paralysis of the entire system. Therefore, more and more attention has been paid to the monitoring of the working state of gears and the research on fault diagnosis technology.