The invention relates to a driving device of an unmanned aerial vehicle undercarriage, folding and unfolding and steering actions of the unmanned aerial vehicle undercarriage are driven by the same hydraulic system, the structure is simple, folding and unfolding and steering sequential actions are controlled through a sequence valve, the folding and unfolding actions and the steering actions are mutually independent and do not influence each other, and reliability is high; the rodless cavities of the telescopic oil cylinders of the three undercarriages are connected to a first flow distributing and collecting valve, the rod cavities of the telescopic oil cylinders of the three undercarriages are connected to a second flow distributing and collecting valve, and through the equivalent flow distributing and collecting effect of the first flow distributing and collecting valve and the second flow distributing and collecting valve, it is guaranteed that the telescopic oil cylinders of the three undercarriages stretch out and draw back synchronously, through the pressure maintaining effect of a first hydraulic control one-way valve and a second hydraulic control one-way valve, the three undercarriages can stably keep the posture of the undercarriages after being folded to be in the preset posture, a damping shock absorption cylinder serves as a buffering device, and through the synergistic effect of the damping spring, the sealing partition plate and pressure oil liquid between the piston of the damping shock absorption cylinder and the sealing partition plate, a good buffering and damping effect is achieved.

    本申请的涉及一种无人机起落架的驱动装置,无人机起落架收放和转向动作由同一个液压系统驱动,结构简单,利用顺序阀控制收放和转向顺序动作,两者相互独立互不影响,可靠性高,三个起落架的伸缩油缸的无杆腔分别连接到第一分流集流阀、三个起落架的伸缩油缸的有杆腔分别连接到第二分流集流阀,通过第一分流集流阀、第二分流集流阀等量式的分流集流作用,保证了三个起落架的伸缩油缸伸缩同步,通过第一液控单向阀、第二液控单向阀的保压作用,使三个起落架收放到预定姿态后能够稳定保持起落架的姿态,阻尼减震缸作为缓冲装置,利用阻尼弹簧、密封隔板、阻尼减震缸的活塞与密封隔板之间的压力油液,三者协同作用,起到良好的缓冲减震作用。


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    Title :

    Driving device of unmanned aerial vehicle undercarriage


    Additional title:

    一种无人机起落架的驱动装置


    Contributors:
    LIU JUNJUN (author) / LIU SHAOJIE (author) / QIANG YANLONG (author) / JIA CHANJUAN (author)

    Publication date :

    2021-11-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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