Steel structure detection device with distance detection mechanism

The utility model discloses a steel structure detection device with a distance detection mechanism, which comprises four supporting columns, baffles are fixedly connected to the tops of the two supporting columns arranged on the same side, a conveying mechanism is movably connected to the sides, close to each other, of the two baffles, and supporting plates are fixedly connected to the sides, away from each other, of the two baffles. The tops of the two supporting plates are fixedly connected with a cover plate, the bottom of the cover plate is fixedly connected with an electric telescopic rod, the bottom of the electric telescopic rod is fixedly connected with a protective shell, the inner walls of the two sides of the protective shell are fixedly connected with sliding rails, the inner walls of the two sliding rails are slidably connected with mounting plates, and the sides, close to each other, of the two mounting plates are fixedly connected with a detection body. The detection body is fixed in the protec