A Fault Identification Method of Mechanical Element Action Unit Based on CWT-2DCNN

Figure 4

Vibration signals and corresponding time-frequency diagrams. (a) Normal state vibration image. (b) Normal time-frequency image. (c) The contact surface in the coupling is worn. (d) The contact surface in the coupling is worn. (e) Deformation of plum star elastic bond. (f) Deformation of plum star elastic bond. (g) Worm axis offset vibration image. (h) Worm axis offset time frequency image. (i) Flat key surface wear vibration image. (j) Time frequency image of flat key surface wear. (k) The flat key locating hole is worn. (l) The flat key locating hole is worn. (m) Bearing assembly clearance is too large. (n) Bearing assembly clearance is too large. (o) Poor bearing lubrication. (p) Poor bearing lubrication.

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