Quick detachable combined cover cap capable of bearing stress

The invention relates to the improvement of an aircraft cover cap, in particular to a quick detachable combined cover cap capable of bearing stress. The cover cap comprises a positive stress bearing cover cap and a quick detachable cover cap, and is characterized in that the quick detachable cover cap is installed at the opening in the positive stress bearing cover cap; the shape of the quick detachable cover cap is matched with that of the opening installed in the positive stress bearing cover cap, and the quick detachable cover cap is connected with the positive stress bearing cover cap through a hinge and a bearing lock at the opening of the positive stress bearing cover cap so as to cover the opening in the positive stress bearing cover cap. The adoption of the combined cover cap formof the positive stress bearing cover cap and the quick detachable cover cap guarantees the structural strength need and the maintainability need of the aircraft and facilitates the installation and maintenance of the aircraft, without affecting the structural weight of the aircraft.