And adaptability of pipeline robot is improved

The utility model discloses an expansion device for improving the adaptability of a pipeline robot. The robot comprises a walking expansion assembly and/or a top expansion assembly. The walking expanding assembly comprises an expanding chassis, expanding walking wheels and a flexible piece. Wherein the expansion chassis is detachably installed below the pipeline robot, the expansion walking wheelsare detachably installed on the expansion chassis, the expansion walking wheels are connected to the output end of a walking power source of the pipeline robot through flexible pieces, and the walking power source is used for providing walking power for the pipeline robot; the top expanding assembly comprises an expanding top frame and a jacking and pressing set protruding out of the upper surface of the expanding top frame, the expanding top frame is detachably installed above the pipeline robot, and the jacking and pressing set telescopically abuts against the top of the inner wall of the pipeline where the pipelin