The invention discloses an undercarriage folding and unfolding mechanism capable of being stopped for posture adjustment. The upper end of a vertical torsion bar is connected with the lower end of a gear connecting rod; the upper end of the gear connecting rod is connected with the gear. The upper end of the ball screw is connected with the lower end of the vertical torsion bar; the lower end of the ball screw is installed on the lower end check block. And a ball nut is sleeved on the ball screw. Buffer connecting sleeves are respectively sleeved at the upper ends and the lower ends of the buffers; and the buffers are respectively in sliding fit with the two vertical guide rails. The wheel is connected with one end of the buffer piston rod, and the other end of the buffer piston rod is provided with the buffer. When an airplane provided with the landing gear device is used for loading and unloading goods, the height of a cargo hold floor can be reduced by actively folding part of the landing gear, so that goods loading and unloading are more convenient, the existing height of the floor of a transportation type airplane is reduced by at least 30% or above, goods loading and unloading are facilitated, and the structural space is saved; and the transmission device has the advantages and characteristics of high transmission precision, high high-speed feeding efficiency, small heat generation, stable movement and transmission reversibility, and the maintenance and operation cost is reduced.

    一种可停机调姿的起落架收放机构,竖直扭杆上端与齿轮连接杆下端连接;齿轮连接杆上端与齿轮连接。滚珠丝杆上端与竖直扭杆下端连接;滚珠丝杠下端安装在下端挡块上。在滚珠丝杠上套装有滚珠螺母。在缓冲器的上端与下端分别套装有缓冲器连接套筒,各缓冲器分别与两条垂直导轨滑动配合。机轮与缓冲器活塞杆的一端连接,缓冲器活塞杆的另一端有缓冲器。安装有本发明飞机在装卸货物时能够通过主动收起部分起落架而降低货舱地板的高度,从而使装卸货物更加便捷,使运输类飞机地板在现有高度降低至少30%以上,方便了货物的装卸,节约了结构空间,并具有传动精度高、高速进给效率高、发热小、运动平稳、具有传动的可逆性的优特点,降低了维护运营成本。


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    Title :

    Undercarriage folding and unfolding mechanism capable of adjusting posture after shutdown


    Additional title:

    一种可停机调姿的起落架收放机构


    Contributors:
    XUE XIAOFENG (author) / MA BOWEN (author) / FENG YUNWEN (author) / HE ZHIYU (author)

    Publication date :

    2023-07-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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