Gondola apparatus

A gondola apparatus to be used for maintenance of a blade in an aerogenerator including a columnar tower, a nacelle provided on the tower, and the blade rotatably attached to the nacelle, the aerogenerator being configured to rotate the blade to operate a generator, the gondola apparatus comprising:

• a front scaffold frame horizontally extending in a direction crossing the tower, the front scaffold frame being configured to face a back of the blade, and the front scaffold frame having a first lateral side and a second lateral side;
• a first side scaffold frame horizontally movably attached to the front scaffold frame, the first side scaffold frame being configured to face one side surface of the blade;
• a second side scaffold frame horizontally movably attached to the front scaffold frame, the second side scaffold frame being configured to face an other side surface of the blade;
• a stabilizing member attached over both the first lateral side and the second lateral side of the front scaffold frame such that the stabilizing member is extendable and contractable to the tower, the stabilizing member abutting on an outer surface of the tower;
• a first lifting device attached to the front scaffold frame;
• a second lifting device attached to the first side scaffold frame such that the second lifting device is rockable with respect to the first side scaffold frame;
• a third lifting device attached to the second side scaffold frame such that the third lifting device is rockable with respect to the second side scaffold frame;
• a first drive device attached to the front scaffold frame, the first drive device being configured to horizontally drive the first side scaffold frame;
• a second drive device attached to the front scaffold frame, the second drive device being configured to horizontally drive the second side scaffold frame;
• a first traction rope wound on the first lifting device and configured to be connected at one end to an origin on a side of the nacelle;
• a second traction rope wound on the second lifting device and configured to be connected at one end to the origin on the side of the nacelle;
• and
• a third traction rope wound on the third lifting device and configured to be connected at one end to the origin on the side of the nacelle
• a first handrail provided on the first side scaffold frame;
• a second handrail provided on the second side scaffold frame;
• a first guide frame provided onto the first handrail;
• and
• a second guide frame provided onto the second handrail,
• wherein the second lifting device includes a first side prop, the third lifting device includes a second side prop, a rocking motion of the first side prop is guided by the first guide frame, and a rocking motion of the second side prop is guided by the second guide frame.