The invention discloses a synchronous stretching arm type deployable light shield. A bottom ring of the light shield is connected with the top ring through two connecting rods, and a shading film is connected with the top ring and the bottom ring. The three sets of two-connecting-rods are evenly distributed in the circumferential direction, the motor driving assemblies on the two-connecting-rods are connected with the bottom ring and the driving rod through the rotating hinges, the driving rod is connected with the driven rod through the rotating hinges, and the driven rod is connected with the top ring through the rotating hinges. The rotating hinge comprises a rotating shaft, a bearing, a hinge upper base, a hinge lower base, a pin, a spring and a limiting screw, one end of the rotatingshaft is connected with the hinge upper base through the bearing, the other end of the rotating shaft is connected with the hinge lower base, and the spring presses the pin into the hinge lower base and fixes the pin through the limiting screw. The light shield has a high folding-unfolding ratio, can be contracted during launching, reduces the occupied space of the fairing, is unfolded in orbit after launching to form a light shield with a large length-diameter ratio, and improves the capability of inhibiting stray light and external heat flow in orbit of a satellite payload.

    本发明公开了一种同步伸展臂式可展开遮光罩。遮光罩的底环通过二连杆与顶环相连,遮光膜分别与顶环和底环相连。二连杆共三组,圆周均布,二连杆上的电机驱动组件通过转动铰链与底环和主动杆相连,主动杆通过转动铰链与从动杆相连,从动杆通过转动铰链与顶环相连。转动铰链包括转轴、轴承、铰链上座、铰链下座、柱销、弹簧和限位螺钉,其中转轴一端通过轴承与铰链上座相连,另外一端与铰链下座相连,弹簧将柱销压在铰链下座中,并通过限位螺钉将弹簧固定。此遮光罩具有较高的折展比,可在发射时收缩,减少占用整流罩空间,发射后在轨展开,形成大长径比的遮光罩,提高卫星有效载荷在轨抑制杂散光和外热流的能力。


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    Titel :

    Synchronous stretching arm type expandable light shield


    Weitere Titelangaben:

    一种同步伸展臂式可展开遮光罩


    Beteiligte:
    WU CHUNLIANG (Autor:in) / LI ZHENGDA (Autor:in) / RAO PENG (Autor:in) / SUN SHENGLI (Autor:in) / SUN LIWEI (Autor:in) / JIANG LEIJIE (Autor:in)

    Erscheinungsdatum :

    2021-02-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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