Locking mechanism and locking method thereof

The invention discloses a locking mechanism and a locking method thereof. The locking mechanism comprises a driving device, a central shaft, a self-locking rod, a lock catch and a sling device, one end of the central shaft is connected with the driving device, the driving device can drive the central shaft to longitudinally move up and down, the other end of the central shaft is connected with the self-locking rod, the lower portion of the self-locking rod is hinged to the lock catch, movement of the self-locking rod can drive the lock catch to be opened and closed, and a sling device is arranged at an opening of the lock catch. The locking mechanism is in a normally open state, when goods need to be hung, the sling connector connected with the goods is inserted into the locking mechanism, after the proximity sensor senses the sling connector, the hydraulic action cylinder acts to drive the self-locking rod to enter a dead angle locking angle, the sling connector is locked through the lock catch, and mounting