Smooth surface polishing device with fixing mechanism

The utility model discloses a smooth surface polishing device with a fixing mechanism, which relates to the technical field of polishing and comprises a platform, supporting legs are fixedly mounted at the bottom of the platform, a motor box is mounted at the top of the platform, a fixing block is rotatably connected to the top of the motor box through a bearing, and a first supporting rod is hinged to the fixing block through a hinge block. A groove is formed in the bottom of the first supporting rod, a telescopic hydraulic cylinder is fixedly installed on the outer wall of the motor box, and the telescopic hydraulic cylinder is arranged on the top of the motor box. By adopting the fixing device I, the round surface of the pipeline is flatly placed on the inner wall of the fixing main body, the threaded shaft is pushed into the fixing main body through threaded rotation by using the rotating ring, the fixing pieces are attached to the outer wall of the pipeline along with the threaded shaft, and the four fix