Fixing device for flue processing

The utility model relates to the technical field of flue processing, in particular to a fixing device for flue processing, which is characterized in that a support cross rod is fixedly mounted at the upper end of the left side of a mounting base, a main mounting frame is fixedly mounted at the upper end of the right side of the mounting base, and a fixing bolt is arranged on the front side of the support cross rod; a telescopic groove is formed in the left side of the supporting transverse rod, a plurality of limiting holes are formed in the front side of the telescopic groove at equal intervals, a sliding base is fixedly installed on the right side of the telescopic groove, a hydraulic box is fixedly installed on the right side of the sliding base, and a hydraulic rod is fixedly installed on the inner bottom wall of the hydraulic box. And a pair of protection baffles is fixedly mounted on the inner wall of the upper side of the mounting base. Through the arrangement of the hydraulic rod, the main mounting fr