Locking device and corresponding self-locking type intelligent lifting safety protective fence

The invention provides a locking device and a corresponding self-locking intelligent lifting safety protective fence. The self-locking intelligent lifting safety protective fence comprises a fixed main body, a lifting main body, a handrail and the locking device. The driving device is connected with the first sliding parts to drive the first sliding parts to slide, the lifting bodies are located on one side of the fixed body, the linkage structure is connected with the fixed shell and the second sliding parts, the lifting shell is connected with the first sliding parts, and the two ends of the handrail are connected with the second sliding parts of the two lifting bodies respectively. The locking device comprises a guide mechanism arranged on the first sliding piece and a movable supporting structure arranged at the upper end of the fixed main body, the upper end of the guide mechanism is provided with an inlet end, the lower end of the guide mechanism is provided with an outlet end, a limiting notch is forme