Maintenance and maintenance device for cast -in -situ box girder

The utility model provides a maintenance and maintenance device for cast -in -situ box girder, including last truss structure, running gear, automatic spray maintenance system with overhaul work platform, go up the truss structure along case beam width degree direction set up in the top of case roof beam for provide power running gear set up in go up the truss structure both sides and drive it follows to go up the truss structure the length direction motion of case roof beam is located case roof beam top automatic spray maintenance system spray piping is fixed to be set up on going up the truss structure, set up in case roof beam below it suspends in midair to overhaul work platform go up truss structure department. The utility model discloses not only can realize automatic, regularly spraying maintenance to cast -in -situ box girder, the accessible overhauls work platform and overhauls in real time the cast -in -situ box girder who the concrete quality defect appears moreover, provides safe construction oper