Steel structure strength detector

The utility model discloses a steel structure strength detector which comprises a working table, a plurality of supporting columns are arranged at the top end of the working table, a top plate is arranged at the top ends of the supporting columns, a hydraulic cylinder is arranged in the middle of the top end of the top plate, and a hydraulic rod penetrating to the position below the top plate is arranged at the bottom end of the hydraulic cylinder. The correction device has the beneficial effects that by arranging the box body, the correction plate, the interchange adjusting mechanism and the correction sliding plate, when a convex block with a pressure sensor faces downwards and a groove is in an open state, strength detection of a steel structure can be achieved, when a movable block faces downwards, a limiting open groove is completely sealed, and the groove is in a closed state, straight correction of the complete steel structure can be achieved, and the correction effect is good. The straightness detecti