Wall climbing robots, also known as wall moving robots, are also known abroad as extreme work robots because vertical wall work is beyond human limits. Despite its superior performance, there has been little research on the subject. This paper introduces a vacuum adsorption structure for a one-footed multi-suction wall climbing robot and establishes a onefooted multi-suction model. Using a four-legged wall crawler as a carrier, the basic conditions to be met by this structure are analysed for both the three-legged and four-legged suction states of the wall crawler. The feasibility of attaching the robot to the structure to move on a vertical wall is verified. The deformation of the body is simulated by ansys for the two adsorption states with load forces ranging from 500N to 700N to verify the feasibility of the structure and to derive a range of feasibility.
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