Turnover mechanism for steel structure machining

The utility model discloses a turnover mechanism for steel structure machining, and relates to the technical field of machining. Comprising an operation table, a translation assembly, an overturning assembly and a clamping assembly. The overturning assembly comprises a strip-shaped mounting box, a mounting groove communicating with the exterior of the mounting box is formed in the mounting box, a sliding rod is rotatably mounted in the mounting groove, a thread is arranged in the middle area of the sliding rod, and a first-stage screw is vertically and rotatably mounted in the middle of the mounting groove upwards; the first-stage screw rod is meshed with a first-stage screw sleeve, the sliding rod is connected with a second-stage screw sleeve in series, and the overturning assembly comprises a supporting rod rotationally connected with the first-stage screw sleeve and the second-stage screw sleeve; the end, close to the first-stage threaded sleeve, of the supporting rod is provided with two clamping assembli