The invention discloses an emergency breaking safety device for a main landing gear, and belongs to the technical field of breaking safety devices. The anti-disengaging device comprises a rotating shaft pin, a pin shaft core, a shaft pin nut, a sealing cover and an anti-disengaging assembly, an annular groove is formed in the shaft pin nut, the sealing cover limits the anti-disengaging assembly in the annular groove, and the sealing cover is connected with the shaft pin nut; the anti-disengaging assembly comprises an anti-disengaging clamping ring and a locking ring, a clamping key is arranged on the anti-disengaging clamping ring, a notch is formed in the corresponding position of the shaft pin nut, a gap is formed between the clamping key and the peripheral face of the anti-disengaging clamping ring, and a positioning groove for positioning the locking ring is formed in the inner wall of the shaft pin nut. According to the anti-falling assembly, the nut can be prevented from rotating, the situation that the shaft pin nut is loosened is avoided, and it is ensured that the safety device is stably installed between the main undercarriage and the wing. The safety device not only can meet the requirement of stable positioning, but also can meet the requirements of a normal load design inner bearing use function and an emergency breaking function under an overload condition of the undercarriage.

    本发明公开了一种主起落架应急断离保险装置,属于断离保险装置技术领域。其包括转轴销、销轴芯、轴销螺母、密封盖及防脱组件,所述轴销螺母上设有环形凹槽,所述密封盖将防脱组件限位在环形凹槽内,所述密封盖与轴销螺母连接;所述防脱组件包括防脱卡环及锁紧环,所述防脱卡环上设有卡键,所述轴销螺母对应位置处设有槽口,所述卡键与防脱卡环的外周面之间设有间隙,所述轴销螺母的内壁上设有定位锁紧环的定位凹槽。本发明防脱组件能够防止螺母发生转动,避免轴销螺母出现松脱的情况,确保保险装置稳定的安装在主起落架与机翼之间。该保险装置不仅能满足稳定定位的要求,而且能满足起落架正常载荷设计内承载使用功能和超载条件下应急断离功能。


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    Title :

    Emergency breaking safety device for main landing gear


    Additional title:

    一种主起落架应急断离保险装置


    Contributors:
    XIAO FEI (author) / WANG XIAOLIANG (author) / LI DONGSHENG (author) / WANG XIAOWEI (author) / SUEMASA (author)

    Publication date :

    2024-10-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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