Automatic cleaning device for outer arc surface of large-diameter aluminum pipe

The invention relates to the technical field of cleaning, and particularly discloses an automatic cleaning device for the outer arc surface of a large-diameter aluminum pipe. Two chucks are rotationally mounted at the two ends of a rack correspondingly, a spray head can spray cleaning liquid to the outer arc surface of the aluminum pipe, a cleaning frame is arranged on a moving frame, and a rotating body is rotationally mounted on the cleaning frame; the first cleaning part and the second cleaning part are arranged on the rotating body in a spaced mode, the first cleaning part and the second cleaning part are each provided with a cleaning face, the cleaning faces can be attached to the outer arc face of the aluminum pipe, the first cleaning part and the second cleaning part are both made of elastic materials, and the elastic modulus of the second cleaning part is larger than that of the first cleaning part; according to the aluminum pipe cleaning device, when the outer arc surface of the aluminum pipe is grad