The invention belongs to the technical field of structural vibration isolation, and discloses a rigidity-adjustable magneto-rheological vibration isolation device for a multi-rotor vehicle body. The device is characterized in that at least one rigidity-adjustable magneto-rheological vibration isolator is uniformly arranged between an upper panel and a lower panel of the aircraft body; the magneto-rheological vibration isolator comprises a magnetic isolation base and a magnetic conduction shell, an iron core is mounted in the center of the magnetic conduction shell, and the bottom of the iron core is connected to the magnetic isolation base through a spring; a magneto-rheological elastomer is arranged between the iron core and the magnetic conduction shell; the middle part of the magneto-rheological elastomer is separated by a magnetic isolation plate; and a coil and a permanent magnet are mounted in an annular space in the magnetic conduction shell, the direction of a magnetic field generated by the coil is opposite to that of a magnetic field generated by the permanent magnet, and the magnetic field of the permanent magnet can be counteracted. According to the invention, a ceramicmagnet is used as the permanent magnet, a constant magnetic field is provided when the multi-rotor unmanned aerial vehicle flies normally, and the rigidity of the rack is guaranteed; under the condition that the multi-rotor unmanned aerial vehicle is subjected to great vibration, the magnetic field is adjusted by the coil, the rigidity of the magneto-rheological material is changed in real time,and the purpose of vibration isolation is achieved.

    本发明属于结构隔振技术领域,公开了一种用于多旋翼机身的刚度可调式磁流变隔振装置,将至少一个刚度可调的磁流变隔振器均匀布置在机身的上、下面板之间;磁流变隔振器包括隔磁底座和导磁壳体,导磁壳体中心安装有铁芯,铁芯底部通过弹簧连接于隔磁底座;铁芯和导磁壳体之间设置有磁流变弹性体,磁流变弹性体的中部由隔磁板分隔;导磁壳体内部的环形空间安装有线圈和永磁体,线圈产生的磁场方向与永磁体产生的磁场方向相反,且可将永磁体的磁场抵消。本发明利用陶瓷磁体作为永磁体,在多旋翼无人机正常飞行时提供恒定磁场,保证机架刚度;在多旋翼无人机受到较大振动的情况下,由线圈调节磁场,实时改变磁流变材料的刚度,达到隔振目的。


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    Titel :

    Rigidity-adjustable magneto-rheological vibration isolation device for multi-rotor vehicle body


    Weitere Titelangaben:

    一种用于多旋翼机身的刚度可调式磁流变隔振装置


    Beteiligte:
    ZHOU YADONG (Autor:in) / FU XIAOMAN (Autor:in) / LIU ZHONGXIAN (Autor:in) / QIU LIANG (Autor:in) / LIU JU (Autor:in) / LANG RUIQING (Autor:in) / CHENG XINGLEI (Autor:in) / CHAI SHOUXI (Autor:in)

    Erscheinungsdatum :

    2020-04-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F16F SPRINGS , Federn / B64C AEROPLANES , Flugzeuge



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