The invention discloses a composite material wing fuel tank maintenance covering cap structure and a preparation method, and belongs to the technical field of wing covering caps. The weight of the fuel tank covering cap assembly can be effectively reduced, meanwhile, the weight of the wings is reduced, the problem of electrochemical corrosion caused by a single aluminum alloy metal covering cap is solved, sufficient overall rigidity is provided, the requirement for oil pressure of a fuel tank is met, meanwhile, manufacturing feasibility and using performance are guaranteed, and the sealing requirement and the detachable requirement of the covering cap are met. An oil tank opening cover opening hole is formed in the wing lower wall plate, and the inner opening cover and the outer opening cover are oppositely arranged inside and outside and are fixedly clamped and installed in the oil tank opening cover opening hole of the wing lower wall plate through bolts. The nut sealing cap and the isolation lining which are integrally designed and manufactured are used for protecting a bolt for assembling a covering cap, lightning stroke discharge caused by exposure of a metal bolt structure is avoided, and the requirements for lightning stroke prevention of an oil tank, ignition source protection and the like are met.

    一种复合材料机翼油箱维护口盖结构及制备方法,属于机翼口盖技术领域。能有效减轻油箱口盖组件重量,同时减轻了机翼的重量,避免了因单一铝合金金属口盖而带来的电化学腐蚀问题,提供了足够的整体刚度,保证了油箱油压的要求,同时保证制备的可行性及使用性能,确保口盖的密封要求及可拆卸要求。所述机翼下壁板上设置有油箱口盖开孔,所述内口盖和外口盖内外相对设置并由螺栓固定夹持安装在机翼下壁板的油箱口盖开孔内。本发明一体化设计制造的螺母密封帽和隔离衬套,用于保护口盖装配用的螺栓,避免金属螺栓结构裸露造成雷击放电,满足油箱防雷击和点火源防护等要求。


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    Title :

    Composite material wing fuel tank maintenance covering cap structure and preparation method


    Additional title:

    一种复合材料机翼油箱维护口盖结构及制备方法


    Contributors:
    LIU TIANQI (author) / QIAO TIANJIAO (author)

    Publication date :

    2024-06-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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