The invention discloses a manual retracting mechanism of a ramp door. The manual retracting mechanism comprises an upper handrail assembly, a supporting rod, a triangular piece, a movable lug piece, a lower handrail assembly and a folding device. The upper handrail assembly and the triangular piece are hinged through a first axial line, the triangular piece and the movable lug piece are hinged through a second axial line, the movable lug piece and the supporting rod are hinged through a fourth axial line, the supporting rod and the lower handrail assembly are hinged through a third axial line, and the lower handrail assembly and the triangular piece are hinged through a fifth axial line. The supporting rod and the ramp door are hinged. The folding device is connected to a door frame, the supporting rod and the ramp door. The manual retracting mechanism has the advantages of being simple in structure, convenient to operate, low in manufacturing cost and high in reliability, avoiding on-board power sources by adopting manual retracting, lowering the use requirement for aerial carriers, being small in occupied space after being folded, providing handrails for passengers to ascend or descend a ramp and guaranteeing the safety of the passengers.


    Access

    Download


    Export, share and cite



    Title :

    Manual retracting mechanism of ramp door


    Contributors:
    ZENG QIANG (author) / ZENG XIAOKANG (author)

    Publication date :

    2016-01-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



    Novel manual retracting mechanism of ramp door

    ZENG QIANG / ZENG XIAOKANG | European Patent Office | 2016

    Free access

    Retracting mechanism and cabin door structure thereof

    MA SEN / LI FU / YUAN QIANGBO et al. | European Patent Office | 2021

    Free access

    MANUAL RETRACTING HEAD RESTRAINT

    TAME OMAR D | European Patent Office | 2016

    Free access

    Stern ramp retracting and releasing device for ship and synchronous retracting and releasing method

    QIN WEIRAN / QIU DABAO / XIA HAIHONG et al. | European Patent Office | 2024

    Free access

    RAMP DOOR OPERATING MECHANISM

    ROTH BRYAN J / ALBRECHT JEFFREY K / BILANCIO DOMINICK et al. | European Patent Office | 2019

    Free access