Abstract
In this paper, a guide rail is designed to realize the stable climbing for a wall climbing robot with passive suction cups. Since the suction cups move relatively to the guide rail, their internal volume will be increased with the variation of the guide rail shape. Therefore, the increase of the internal volume of the suction cup leads to the decrease of the internal pressure, which improve the adsorption performance of the wall climbing robot. Experiments are conducted to confirm the usefulness of the guide rail and the climbing stability of the wall climbing robot.
