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.
Manual retracting mechanism of ramp door
06.01.2016
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
Retracting mechanism and cabin door structure thereof
Europäisches Patentamt | 2021
|Stern ramp retracting and releasing device for ship and synchronous retracting and releasing method
Europäisches Patentamt | 2024
|