The invention relates to a sealing pipeline cleaning device, in particular to a trolley suitable for cleaning sealing pipelines. At present, pipeline cleaning tools frequently used by people comprise pipeline cleaning robots, pipeline cleaners, ultrasonic cleaners and the like; and the tools need to be operated by professional technicists when in use and have the defects of low cleaning quality of pipelines, high cost, complicated structure, inconvenient operation and the like. The invention has the technical scheme that the trolley adopts two power wheels as driving force for vehicle runningand one universal wheel as a steering wheel, and the front end of an impact rod is provided with a front-end rolling bearing for generating rolling friction when impacting, thereby reducing friction force. The top ends of guiding rods at two sides are provided with rolling bearings for reducing the friction force, and a bottom plate is made of an aluminum alloy hollow plate. The guiding rods at the two sides are automatically returned by adopting springs. The guiding rods at the two sides uniformly and symmetrically extend to the two sides through the springs and four-connecting rod mechanisms to automatically adapt to the pipelines with different widths.