The invention belongs to the technical field of aircraft landing gears, and particularly discloses an undercarriage folding and unfolding system for single-action control folding and unfolding and locking, which comprises a first supporting rod, a second supporting rod, a third supporting rod, a folding and unfolding actuating cylinder and a multi-connecting rod mechanism, one end, connected with the undercarriage cabin, of the first supporting rod is hinged to a connector, and the other end is provided with an airplane wheel; the other end of the second supporting rod is hinged to a third supporting rod, and the end, away from the second supporting rod, of the third supporting rod is hinged to the middle of the first supporting rod; an upper lock mechanism is arranged on a rod body of the second supporting rod, and a lower lock mechanism is arranged at one end close to the third supporting rod; the retracting and releasing actuating cylinder is connected between the connector and the steering knuckle and is in transmission connection with the lower lock mechanism through the multi-connecting-rod mechanism. The multi-connecting-rod mechanism is compact in structure and easy to operate, the multi-connecting-rod mechanism is driven through the single actuator cylinder, the folding, unfolding and locking functions of the undercarriage can be synchronously completed, the operation process is simplified, the structural stability is improved, and the service life of the undercarriage can be prolonged.
本发明属于飞行器起落装置技术领域,具体公开一种单作动控制收放和锁止的起落架收放系统,包括第一撑杆、第二撑杆、第三撑杆、收放作动筒以及多连杆机构;第一撑杆与起落架舱体相接一端铰接连接头,另一端安装机轮;第二撑杆与起落架舱体相接一端铰接转向节,另一端铰接第三撑杆,第三撑杆远离第二撑杆的一端铰接在第一撑杆的中部;第二撑杆的杆身上设有上位锁机构,靠近第三撑杆的一端设有下位锁机构;收放作动筒连接在连接头和转向节之间,通过多连杆机构与下位锁机构传动连接。本发明结构紧凑、操作简单,通过单作动筒驱动多连杆机构,能够同步完成起落架的收放与锁止功能,简化了操作流程,提高了结构稳定性,能够延长起落架的使用寿命。
Undercarriage folding and unfolding system capable of controlling folding and unfolding and locking through single actuation
一种单作动控制收放和锁止的起落架收放系统
30.05.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |
Europäisches Patentamt | 2025
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