Accident factors and shock inspection of dental machinery

The following is a description of the commonly used analysis method - power spectrum analysis. Power spectrum analysis can determine the frequency composition of the gear vibration signal and the distribution of vibration energy in each frequency component. It is an important frequency domain analysis method. There are generally three kinds of frequency structures in the power spectrum, which correspond to different reasons, as shown in Figure 1. A port crane hoisted a strong vibration during the earthwork. Initial inspection found that during the lifting process, if a hoist was started, one of the gearboxes vibrated the most.
The main cause is the random vibration signal. It is generally possible to have these three frequency structures in the power spectrum of a normally operating gearbox, but the amplitude is relatively small. With the occurrence of gear failure (such as gear wear), if the linear spectrum gear is faulty during operation, the temperature, the content and shape of the wear in the lubricating oil, the vibration of the gearbox and the noise of the radiation, some signs are extracted. It is not easy to achieve with analysis, and some conditions reflect the state of the situation is not sensitive.

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