Frame girder lifting device

The utility model discloses a frame girder lifting device which comprises a base, universal wheels are arranged on the outer surface of the lower end of the base, a mounting frame is fixedly connected to the outer surface of the upper end of the base, and an automatic rotation angle adjustable lifting device used for improving lifting position adjusting convenience is arranged on the inner surface of the upper end of the mounting frame. The automatic rotation angle adjustable lifting device comprises a hydraulic cylinder and a guide sliding rail, limiting blocks are arranged at the two ends of the guide sliding rail, and a guide sliding sleeve is arranged between a piston rod of the hydraulic cylinder and the middle of the inner surface of the upper end of the mounting frame. According to the frame girder lifting device, the automatic rotation angle adjustable lifting device is arranged, the structure is simple, operation is convenient and fast, the automation degree is high, the convenience of position adjus