Steel chimney detection port supporting mechanism

The utility model relates to the technical field of chimneys, and discloses a steel chimney detection port supporting mechanism which comprises bottom plates, the bottom plates are fixedly connected to the lower middle portion of the left wall in a chimney body and the middle portion of the bottom wall outside a detection pipeline respectively, and fixing plates are fixedly connected to the sides, away from the bottom plates, of the left wall in the chimney body and the bottom wall outside the detection pipeline. Air cylinders are fixedly connected to the side walls, close to the bottom plate, of the fixing plates, connecting grooves are formed in the sides, close to the fixing plates, of the interiors of the bottom plate, connecting blocks are slidably connected to the interiors of the connecting grooves, and mounting cavities are formed in the sides, close to the fixing plates, of the interiors of the connecting blocks. According to the supporting and fixing mechanism, by starting the air cylinder, the outp