Structure for nacelle cover connection portion of wind turbine generator

A structure for a nacelle cover connection portion of a wind turbine generator, wherein a lower panel constituting a lower part of each side wall of a nacelle cover covering a nacelle of a wind turbine generator and an upper panel constituting an upper part of said side wall are connected to each other, the structure comprising:

• a lengthy first frame member fixed to an inside surface of said nacelle cover and forming an upper end portion of said lower panel;
• a lengthy second frame member fixed to an inside surface of said nacelle cover and forming a lower end portion of said upper panel, the upper surface of said first frame member and the lower surface of said second frame member being aligned with and fixed to each other so as to connect the upper end portion of said lower panel and the lower end portion of said upper panel in substantially the same plane;
• a covering portion covering the upper end portion of said lower panel which forms an outer wall of the nacelle cover from the outside of the nacelle at a predetermined interval in an outward direction of the nacelle cover from the upper end portion of said lower panel, the covering portion being formed integrally with the lower end portion of said upper panel so as to protrude to the outside of said nacelle cover farther than the lower end portion of said upper panel;
• and
• a packing interposed between an upper surface of said first frame member and an lower surface of said second frame member.