Fixing device for pipeline transformation

The utility model discloses a fixing device for pipeline transformation. The fixing device comprises a U-shaped frame and a supporting mechanism. The lower portion of the U-shaped frame is connected with a plurality of universal wheels, and the U-shaped frame is symmetrically connected with a pair of auxiliary supporting mechanisms. The supporting mechanism is installed in the U-shaped frame and comprises an arc-shaped supporting block, the arc-shaped supporting block is fixedly connected into the U-shaped frame, a containing groove is formed in the center of the arc-shaped supporting block, a pair of air cylinders is installed in the containing groove, the free ends of the air cylinders are connected with installation pieces, and the installation pieces are rotationally connected with a plurality of pipe unloading wheels. The auxiliary supporting mechanism comprises an auxiliary supporting plate used for being connected with the pair of extension rods. The auxiliary supporting plate is arranged on the upper