Boarding bridge walking mechanism safety protection device capable of maintaining stability of protection frame

The invention discloses a boarding bridge walking mechanism safety protection device capable of maintaining stability of a protection frame, which comprises the protection frame, the protection frame comprises a pair of protection collision edges which are arranged at an interval, a follow-up hanging bracket is arranged between the protection collision edges, and protection frame form stability maintaining mechanisms are arranged between the protection collision edges and the follow-up hanging bracket. And after the protection frame is collided, the protection frame is adjusted by the protection frame shape stability maintaining mechanism to return to a stable state. The protective frame shape stability maintaining mechanism comprises a pair of protective collision edges, ball joint connecting pieces are arranged on the protective collision edges, the protective frame shape stability maintaining mechanism comprises a hanging rod connected to the ball joint connecting pieces, the hanging rod is sleeved with th