Aerodynamic adsorption device for realizing flight of wall-climbing robot

The invention discloses an aerodynamic force adsorption device for achieving flying of a wall-climbing robot, and belongs to the field of pneumatic design. The device comprises a gap limiting structure, a suction cup, a motor, a propeller and a connecting base, and the bottom end of the suction cup is connected with a robot body through the connecting base; the motor is coaxially installed on the connecting base, an output shaft of the motor is coaxially connected with the propeller, the propeller is coaxially arranged in the suction cup, the radius of a paddle disc of the propeller is R, the gap limiting structure is a hemispherical protrusion arranged on the surface of a lip of the suction cup and used for limiting the distance between the suction cup and the wall face, and the axial height of the gap limiting structure is 5% of the diameter of the paddle disc. The peripheral wall of the suction cup is of an expansion structure from the bottom end to the lip in the axial direction. And the axial section of