Crawling robot for cleaning outer surface of pipeline

The invention belongs to the technical field of cleaning equipment, and particularly relates to a crawling robot for cleaning the outer surface of a pipeline, which comprises a wall body and a pipeline, the pipeline is fixed on one surface of the wall body through a plurality of pipe hoops, the crawling robot is arranged above the pipeline, a cavity is formed in the crawling robot, and a driving device is arranged in the cavity. A tail is fixedly installed at one end of the crawling robot, the surface of the tail fixedly communicates with a cleaning ring, and a cleaning device is arranged in the cleaning ring. According to the crawling robot for cleaning the outer surface of the pipeline, a first mechanical claw, a second mechanical claw and a third mechanical claw make contact with the outer surface of the pipeline and move from top to front, and the crawling robot crawls upwards along the outer surface of the pipeline and drives the cleaning sponge to move upwards along the outer surface of the pipeline alo