The invention relates to the field of cleaning devices. More precisely, the invention relates to a device for cleaning a rotor blade of an aircraft. The device comprises an opening (4) for the passage of the rotor blade (5) with an edge, with at least one cleaning element (6, 7; 19, 20) on a side region of this edge. is present, and a supporting element for restricting the rotation of the opening (4) about an axis of rotation (R) and for absorbing compressive forces is arranged on an opposite further side area, and wherein the opening (4) is arranged in a frame (1), which is tiltably connected to a holder (9) via a joint (8) providing the axis of rotation (R) so that both the at least one cleaning element (6, 7; 19, 20) and the support element can be placed on the rotor blade (5), while forces holding the frame (1) in position on the rotor blade (5) can be provided by means of the holder (9).
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