The invention relates to a collision energy-absorbing inclined strut capable of being converted between fixed connection and hinged connection under an aircraft floor, which comprises a composite material pipe, a flat pressing joint and a turnover joint, a plurality of flat pressing fixed connection holes are formed in the upper end of the flat pressing joint, the flat pressing joint is fixedly connected with a floor cross beam through a flat pressing fixed connection piece, a flat pressing hinged hole is formed in the middle of the flat pressing fixed connection holes. The flat pressing joint is hinged with the floor cross beam. The lower end of the turnover connector is provided with a plurality of turnover fixed connection holes and fixedly connected with the machine body frame through turnover fixed connection pieces, a turnover hinge hole is formed in the middle of each turnover fixed connection hole, and each turnover fixed connection hole is hinged to the machine body frame through a turnover hinge piece. After crushing is generated, the two ends of the supporting column are hinged, the supporting column only bears axial loads and cannot be broken, good energy absorption is achieved, reliability and durability are higher, connection between the circular supporting column and the plane of the fuselage frame and the plane of the floor beam is considered in form, and the collision energy-absorbing inclined strut is more suitable for being applied to an aircraft structure.
本发明涉及一种飞机地板下可固接‑铰接转换的碰撞吸能斜支柱,包括复合材料管、平压接头、翻转接头,所述平压接头上端设有若干平压固接孔,并通过平压固接件与地板横梁固接,所述平压固接孔的中间设有一平压铰接孔,并通过平压铰接件与地板横梁铰接;所述翻转接头下端设有若干翻转固接孔,并通过翻转固接件与机身框固接,所述翻转固接孔的中间设有一翻转铰接孔,并通过翻转铰接件与机身框铰接。当压溃产生后,支柱两端变为铰接,支柱只承受轴向载荷,不会折断,实现良好的吸能,可靠性和耐久性更高,在形式上考虑了圆形支柱和机身框和地板梁平面的连接,更适合在飞机结构上应用。
Collision energy-absorbing inclined strut capable of being converted between fixed connection and hinged connection under aircraft floor
一种飞机地板下可固接-铰接转换的碰撞吸能斜支柱
2021-06-29
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Aircraft underfloor collision energy absorption groove type inclined strut structure
European Patent Office | 2020
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