Prefabricated box girder production line

The utility model discloses a prefabricated box girder production line which comprises a box girder production line unit, and the box girder production line unit comprises a formwork mounting and pouring station, an inner formwork in-out station, a curing pre-tensioning station, a steam curing station and an initial tensioning and reinforcement cage in-mold station which are arranged in sequence. An inner mold avoiding station is arranged on the outer side of the inner mold in-out mold station; wherein the formwork mounting and pouring station is used for completing inner formwork and end formwork mounting, concrete pouring and final setting and end formwork dismounting in a bottom formwork and side formwork combined system where a reinforcement cage is mounted; the primary tensioning and reinforcement cage in-mold station is used for carrying out primary tensioning on the box girder transferred from the steam curing station, and after the box girder is demolded and transferred, installation of a reinforcemen