Lock structure and shielding door system

The invention relates to the field of lock structures, and discloses a lock structure and a shielding door system. The lock structure comprises a mounting bottom plate, a first driving part, a sliding plate and two lock plates are arranged on the mounting bottom plate, the top end of the sliding plate is bent to form a bent part, an output shaft of the first driving part is connected with the bent part, a push plate is arranged at the bottom end of the sliding plate in the direction facing the mounting bottom plate in an extending mode and used for being connected with a second driving part, and a limiting column is arranged on the sliding plate; the lock plates are rotationally connected with the mounting bottom plate, the two lock plates are oppositely arranged, and lock grooves and hook grooves are formed in the lock plates. According to the lock structure, the sliding plates are arranged in a special structure mode, the mass of the sliding plates is reduced under the condition that the strength and the mi