Pull rod structure for large-span steel structure

The utility model belongs to the field of building construction, and particularly discloses a pull rod structure for a large-span steel structure, which comprises a pull rod body, and a first nut, a mounting plate, a second nut, a limiting plate, a thrust knuckle bearing and a third nut are sequentially mounted on the pull rod body along the axial direction of the pull rod body. The first nut and the second nut are in threaded connection to one end of the pull rod body, the third nut is in threaded connection to the other end of the pull rod body, the two sides of the mounting plate abut against the end faces of the first nut and the second nut respectively, and the mounting plate is used for being welded to a main body embedded part. One side of the thrust knuckle bearing abuts against the end face of the third nut, and a steel structure is installed between the other side of the thrust knuckle bearing and the limiting plate. A reinforcing piece is detachably connected between the pull rod body and the mount