Screw structure, sliding door hanging wheel structure and shower room sliding door structure

The utility model relates to the technical field of sliding doors, and discloses a screw structure, a sliding door hanging wheel structure and a shower room sliding door structure. The device comprises a screw rod, a first fixing piece, a first body and a second body, the screw rod is in threaded connection with the first body and penetrates through the first body; a containing cavity is formed inthe second body, the screw rod is in threaded connection with the second body, and the tail end of the screw rod extends into the containing cavity; the first fixing piece is located in the containing cavity and arranged at the tail end of the screw rod in a sleeving mode. The accommodating cavity is formed in the second body, the tail end of the screw extends into the accommodating cavity, and the first fixing piece is arranged at the tail end of the screw in a sleeving manner, so that the tail end of the screw can only move in the accommodating cavity; and in the screw rod adjusting process, the tail end is limited