The invention belongs to the field of aircraft structure design, and particularly relates to a large-angle folding self-folding type lock supporting rod mechanism which comprises a lower supporting rod, an upper supporting rod, an actuator cylinder, a lock driving rocker arm, a connecting rocker arm and a switching rocker arm. The end parts of the upper support rod and the lower support rod are mutually hinged; the lower end of the lower support rod is connected with the undercarriage through a connecting bolt of a hinge fulcrum O1; the upper end of the lower supporting rod is connected with the switching rocker arm; the switching rocker arm is hinged to the lower end of the upper supporting rod through a hinge fulcrum O2. The number of parts is small, the structure is simple, only 3-4 main lock mechanism assemblies are arranged except the main force bearing supporting rod, and the structural weight is light. A lock mechanism assembly of the supporting rod mechanism is arranged on one side of the supporting rod, the large-angle folding function can be achieved, and the folding angle can be adjusted to be within 10 degrees through geometric arrangement. A position retaining spring of a lock mechanism of the supporting rod mechanism is a compressed spring, and compared with the mode that most mechanisms adopt tension springs, the compressed spring is higher in use reliability and longer in service life.
本申请属于飞机结构设计领域,特别涉及一种大角度折叠自折式锁撑杆机构,包括下撑杆、上撑杆、作动筒、锁驱动摇臂、连接摇臂和转接摇臂;上撑杆和下撑杆的端部相互铰接,下撑杆下端通过铰支点O1的连接螺栓与起落架相连;下撑杆上端与转接摇臂相连;所述转接摇臂与上撑杆下端通过铰支点O2铰接;零件数量少,结构简单,除主承力撑杆外主要锁机构组件仅3‑4个,结构重量轻。撑杆机构的锁机构组件布置在撑杆的一侧,可以实现较大角度的折叠功能,可通过几何布置将折叠角度调整小至10°以内。撑杆机构的锁机构的保位弹簧采用的是压簧,与大多数机构采用拉簧的形式相比压簧使用的可靠性要高,使用寿命更长。
Large-angle folding self-folding type lock supporting rod mechanism
一种大角度折叠自折式锁撑杆机构
2025-02-25
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Self-folding type supporting rod lock mechanism of large undercarriage
European Patent Office | 2024
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