Box girder built-in sleeve positioning structure

The utility model discloses a box girder built-in sleeve positioning structure which comprises a box girder, a sleeve and a positioning tool device, the box girder comprises a main rib plate a, a main rib plate b and a main rib plate c which are sequentially arranged from top to bottom, the main rib plate a is provided with a positioning seat, and the main rib plate b is provided with a positioning groove. The sleeve sequentially penetrates through the main rib plate c and the main rib plate b from bottom to top and is concentric with the positioning seat, and the positioning tool device comprises a positioning rod and a positioning block which is arranged at one end of the positioning rod and can be matched in an inner cavity of the positioning seat. And a coaxial plate which is concentric with the positioning rod and can be sleeved in the inner cavity of the sleeve is fixedly arranged on the outer wall of the positioning rod. According to the box girder built-in sleeve positioning tool, the perpendicularity