An active leg-retracting type compact space main landing gear is characterized in that one end of a supporting rod is connected with an aircraft body structure, the other end of the supporting rod is connected with a main supporting column, the upper portion of the main supporting column is connected with one end of an upper supporting arm, one end of a leg-retracting actuating cylinder and the aircraft body structure, the lower portion of the main supporting column is connected with a lower rocker arm, and the leg-retracting actuating cylinder is connected with the upper supporting arm; the lower rocker arm is connected with an airplane wheel tire; one end of the buffer is connected with the upper support arm and the other end is connected with the lower rocker arm; one end of the retractable actuating cylinder is connected with the main supporting column, and the other end of the retractable actuating cylinder is connected with the machine body structure; the uplock is connected with the machine body structure. A four-connecting-rod mechanism is formed by the main supporting column, the upper supporting arm, the buffer and the lower rocker arm, the leg retracting actuating cylinder pushes the upper supporting arm in the four-connecting-rod mechanism to rotate so as to drive the four-connecting-rod mechanism to enable the main landing gear to actively retract legs, the leg retracting angle reaches about 80 degrees, and the leg retracting angle is greatly increased; and after the main landing gear is folded, the storage space requirement is greatly reduced.

    一种主动缩腿式紧凑空间主起落架,其中,撑杆一端与机体结构连接,撑杆另一端与主支柱连接,主支柱上部分别与上支臂一端、缩腿作动筒一端及机体结构连接,主支柱下部与下摇臂连接,缩腿作动筒与上支臂连接;下摇臂与机轮轮胎连接;缓冲器一端与上支臂连接,缓冲器另一端与下摇臂连接;收放作动筒一端与主支柱连接,所述收放作动筒另一端与机体结构连接;上位锁与机体结构连接。本发明通过主支柱、上支臂、缓冲器及下摇臂形成四连杆机构,由缩腿作动筒推动四连杆机构中的上支臂旋转进而带动四连杆机构促使主起落架主动缩腿,缩腿角度达到接近约80°,极大提高缩腿角度,使主起落架收起后大幅减小收藏空间需求。


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    Title :

    Active leg retracting type compact space main landing gear


    Additional title:

    一种主动缩腿式紧凑空间主起落架


    Contributors:
    YANG BO (author) / ZENG XIANGCAI (author) / LI BIN (author) / XIANG XIAOPING (author) / YAN HUIMING (author) / LU WEIFU (author) / XU WEIDONG (author) / LI XIAOBAO (author) / PEI HUAPING (author) / SUN MIN (author)

    Publication date :

    2023-03-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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