H-shaped steel overturning and welding device

The utility model relates to an H-shaped steel overturning and welding device. The device comprises a stand column, a rotary frame, a positioning and locking device, a lifting device and a limiting device, wherein the positioning and locking device comprises a locking mechanism arranged on the stand column and a frame positioning rack fixedly connected to the rotary frame and matched with the locking mechanism, a height adjusting device is connected to the lower portion of the lifting device and can be used for adjusting the vertical movement ranges of a heel slab and an upper ejector plate, and then the length range of positioned structural steel is wider. The method that a piston rod of a cylinder pushes a positioning shaft is adopted for the positioning and locking device, and compared with the manual method, the method has the advantage that an operator only needs to conduct operation through a control switch so that operation can be more convenient. An electromagnetic sucker and a limiting plate are used in cooperation for the limiting device, both the limiting function and positioning function are realized, and when positioning is inaccurate, the exact position can be found by adjusting an adjusting screw, so that the problem that deviation adjustment is inconvenient after positioning and installation are achieved by means of a positioning hole is solved.