Apparatus for cleaning a blade of a wind generator

A device for washing a blade of a wind generator of the present invention moves along the length direction of the blade of the wind generator so as to wash the surface of the blade. The device comprises: an ascending unit that includes an ascending plate having a through-hole formed at the center thereof so as to enable a blade to penetrate therethrough, a rope operating member provided so as to enable the ascending plate to ascend along the length direction of the blade, and a rope having one end connected with the ascending plate and the other end passing through a nacelle of the wind generator in order to be connected with the rope operating member; and a washing unit that is installed in order to be able to move right and left on a guide rail installed on the ascending plate to be adjacent to the through-hole and is operated to move towards another position in order to be able to contact the surface of the blade so as to wash the surface of the blade. The washing unit comprises: a washing body installed in order to be able to move right and left along the guide rail; a driveshaft that has one end connected with the washing body in order to be able to move forwards and backwards and provides a rotating force to a rotating member installed in the other end; a first interval adjusting unit that is disposed horizontally with respect to the driveshaft to be separated at a particular interval from the driveshaft, is installed in order to be able to move forwards and backwards on the washing body, and is equipped with a first rubber roller that is formed at the longitudinal end thereof in order to come in contact with the surface of the blade; and a second interval adjusting unit that is disposed horizontally with respect to the driveshaft to be separated at a particular interval from the driveshaft, is installed in order to be able to move forwards and backwards on the washing body, and is equipped with a second rubber roller that is formed at the longitudinal end thereof in order to come in contact with the surface of the blade. By means of the first rubber roller and second rubber roller, the rotating member is preferably provided in order not to directly contact the surface of the blade.