Maintenance tool of biochemical analyzer

The maintenance tool comprises arc-shaped plates, a bristle body, a first H-shaped frame, a second H-shaped frame, a driving motor, a connecting block, an inserting rod and an inserting groove, the bristle body is fixedly connected to the peripheries of the arc-shaped plates, the first H-shaped frame is arranged between the two arc-shaped plates, the second H-shaped frame is fixedly connected to the inner wall of the first H-shaped frame, and the driving motor is arranged on the inner wall of the second H-shaped frame. The driving motor is fixedly mounted on the first H-shaped frame, and the output end of the driving motor is fixedly connected with the surface of the first H-shaped frame; the connecting block is fixedly connected to the inner wall of the arc-shaped plate, the inserting rod is fixedly connected to one end of the connecting block, and the inserting groove is formed in the end of the first H-shaped frame; by arranging the outer diameter adjusting mechanism, the cleaning width of the whole mainte