The invention discloses a four-rotor aircraft with variable propeller wheelbase, which belongs to the technical field of aircraft design, and is characterized in that an outer arm is horizontally and rotatably arranged at the end part of each first frame arm; the variable pitch sheet is coaxially and rotationally connected with the center of the main frame body; the length of the second frame arm is larger than that of the first frame arm, and a track groove is formed in the end of the second frame arm in the vertical direction. The outer arm is provided with a variable-pitch limiting piece perpendicular to the outer arm. One end of the variable-pitch limiting piece penetrates through the track groove and is in sliding fit with the track groove; lift assemblies are mounted on the sides, away from the tops of the first frame arms, of the outer arms; an angle adjusting assembly is erected on the main frame body; the angle adjusting assembly is used for driving the variable-pitch pieces to rotate horizontally, then the four outer arms are driven to rotate synchronously and horizontally, the distance between the lifting force assembly and the center of the main frame body is adjusted, the safety performance of the aircraft in different wheelbase states is guaranteed, and the aircraft can land and deliver goods in narrow and small areas.

    本发明公开了一种可变桨轴距四旋翼飞行器,属于飞行器设计技术领域,在设置的每个第一架臂的端部水平转动有一个外臂;变距片和主架体的中心同轴转动连接;第二架臂的长度大于第一架臂的长度,且第二架臂的端部沿垂直方向开通有轨迹槽;外臂上设有与外臂垂直的变距限位件;变距限位件的一端穿过轨迹槽,与轨迹槽滑动配合;外臂远离第一架臂的顶部一侧安装有升力组件;主架体上架设有角度调节组件;角度调节组件,用于驱动变距片水平转动,进而分别带动四个外臂同步水平转动,调节升力组件与主架体中心的距离,保障飞行器在不同轴距状态下的安全性能,使其可以在狭小地带降落送货。


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    Title :

    Four-rotor aircraft with variable propeller wheelbase


    Additional title:

    一种可变桨轴距四旋翼飞行器


    Contributors:
    LIU LU (author) / WANG SHENGNAN (author) / FU SEN (author) / HOU XIAOHENG (author)

    Publication date :

    2023-09-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64U



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