The invention belongs to the technical field of rotor systems, and discloses a small paddle brake positioning and folding device which comprises a lift system and a brake limiting system. Wherein the lifting force system is a multi-blade rotor system with a brushless motor as a power source, the brake limiting system is arranged in a nacelle, and the brake limiting system brakes the lifting force system by controlling a brake structure of the brake limiting system to intermittently rub a rotary connecting structure of the lifting force system; a brake structure of the brake limiting system and a rotary connecting structure of the lift system are provided with a boss and a groove which are matched with each other, so that blades of the lift system stop at fixed positions after braking; after a motor of the lift force system brakes, paddles are automatically folded under the action of airflow. The blade folding and positioning structure has the characteristics of simple structure, high reliability, attractive appearance after the blade is folded, positioning in phase and the like, the structure and the control principle thereof are simple and easy to implement, and the blade folding can ensure that wake flow at the folded blade flows through the wing relatively stably while reducing the flight resistance.

    本发明属于旋翼系统技术领域,公开了一种小型桨叶刹车定位与折叠装置,包括升力系统和刹车限位系统;其中,升力系统是无刷电机为动力源的多桨叶旋翼系统,刹车限位系统设在短舱内,刹车限位系统通过控制其刹车结构间歇摩擦升力系统的转动连接结构,实现对升力系统的刹车;刹车限位系统的刹车结构与升力系统的转动连接结构具有相互配合的凸台和凹槽,使得刹车后升力系统的桨叶停在固定位置;升力系统的电机刹车后,桨叶在气流作用下自动折叠。本发明桨叶折叠定位结构具有结构简单、可靠性高、桨叶折叠后外形美观且具有相位上定位等特点,结构及其控制原理简单,易于实施,桨叶折叠减少飞行阻力的同时可保证折叠桨叶处尾流流经机翼时相对稳定。


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    Title :

    Small paddle brake positioning and folding device


    Additional title:

    一种小型桨叶刹车定位与折叠装置


    Contributors:
    DENG JINGHUI (author) / LIU JIFU (author) / MA DONGLIN (author) / LUO JUN (author)

    Publication date :

    2023-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64U



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