The invention relates to the technical field of main undercarriage upper position lock repairing, in particular to a main undercarriage upper position lock spring device earring bolt fastening method which comprises the following specific steps: S1, theoretical stress analysis; s2, actual torque; s3, loosening mechanism research; s4, the earring bolt is repaired; s5, performing test verification; s6, determining a fastening method; the method comprises the following steps: carrying out theoretical stress analysis on an earring bolt of a main landing gear folding position lock spring device, actually measuring a torque range provided by compression deformation of a metal thin edge when the earring bolt of the spring device is decomposed, and carrying out data statistical analysis; secondly, the loosening mechanism of the earring bolt is researched, torque ranges provided by different fastening methods are analyzed through a finite element analysis method, and the influence of the different fastening methods on the material strength of the spring device is analyzed; the effective fastening method for the earring bolt of the spring device is determined through test verification, the maintenance standard of the main landing gear folding position lock is perfected, and the repair reliability of the product is improved.

    本发明涉及主起落架收上位置锁修理技术领域,具体是一种主起落架收上位置锁弹簧装置耳环螺栓紧固方法,其具体步骤如下:S1、理论受力分析;S2、实际力矩;S3、松动机理研究;S4、耳环螺栓修理;S5、试验验证;S6、紧固方法确定;对主起落架收上位置锁弹簧装置耳环螺栓进行理论受力分析,同时在分解弹簧装置耳环螺栓时实际测量金属薄边压缩变形提供的力矩范围,并进行数据统计分析;其次对耳环螺栓松动机理进行研究,通过有限元分析方法,对不同紧固方法提供的力矩范围进行分析,分析不同紧固方法对弹簧装置材料强度的影响;通过试验验证确定弹簧装置耳环螺栓有效的紧固方法,完善主起落架收上位置锁维修标准,提高产品的修理可靠性。


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    Titel :

    Fastening method for lug bolt of lock spring device at upper position of main landing gear


    Weitere Titelangaben:

    一种主起落架收上位置锁弹簧装置耳环螺栓紧固方法


    Beteiligte:
    LIU TINGYU (Autor:in) / WANG YAJUN (Autor:in) / TANG WEN (Autor:in) / SUN TONGMING (Autor:in) / GU KEYU (Autor:in)

    Erscheinungsdatum :

    2023-12-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge / 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 / F16F SPRINGS , Federn / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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