Adjusting device for improving construction precision of large-size steel member

The utility model provides an adjusting device for improving the construction precision of a large-size steel member. The adjusting device comprises a frame body, opening and closing mechanisms are fixedly mounted on the two sides of the frame body; the telescopic linkage mechanism is fixedly mounted on the inner side of the frame body; the hydraulic telescopic rods are fixedly mounted at the tops of the two sides of the opening and closing mechanism; through the arrangement of the telescopic rod, the sliding block, the linkage block, the positioning seat, the opening and closing arm, the sliding groove and the ejection piece, the telescopic rod is used for stretching out and drawing back to drive the linkage block, the linkage block drives the opening and closing arm to open and close through the sliding block with the two sides slidably connected to the interior of the sliding groove and fixing of the positioning seat, and the ejection piece drives the steel structure with deviation to eject back to the ori