The invention belongs to the technical field of anti-impact design of aviation structures, and particularly relates to an anti-falling and anti-collision fuselage lower energy absorption structure. According to the structure, the cross section of a machine body frame is arc-shaped; two ends of the cabin floor beam are connected with the fuselage frame; the fuselage lower cross beam is arranged below the passenger cabin floor cross beam in parallel, the two ends of the fuselage lower cross beam are connected with the fuselage frame, and a containing space is formed between the fuselage lower cross beam and the passenger cabin floor cross beam. The two fuselage lower part inclined struts are symmetrically arranged, each fuselage lower part inclined strut comprises a first inclined strut section and a second inclined strut section, the end part of each first inclined strut section is connected with the fuselage frame, and the end part of each second inclined strut section is connected with the fuselage lower part cross beam; the first inclined strut section, the second inclined strut section, the fuselage lower cross beam and the fuselage frame jointly form a parallelogram-like structure; the upper ends of the fuselage lower stand columns are connected with the passenger cabin floor cross beam, and the lower ends of the fuselage lower stand columns are connected with the fuselage lower inclined struts. The falling collision load peak value can be reduced.

    本申请属于航空结构抗冲击设计技术领域,特别涉及一种抗坠撞机身下部吸能结构。结构包括:机身框的横截面呈弧形;客舱地板横梁的两端与机身框连接;机身下部横梁平行设置在客舱地板横梁的下方,机身下部横梁的两端与机身框连接,机身下部横梁与客舱地板横梁之间形成容纳空间;机身下部斜撑对称布置两个,机身下部斜撑包括第一斜撑段以及第二斜撑段,第一斜撑段的端部与机身框连接,第二斜撑段的端部与机身下部横梁连接,其中,第一斜撑段、第二斜撑段、机身下部横梁以及机身框之间共同形成类平行四边形结构;机身下部立柱对称布置两个,机身下部立柱的上端与客舱地板横梁连接,下端与机身下部斜撑连接。本申请能够降低坠撞载荷峰值。


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    Title :

    Anti-falling and anti-collision lower portion energy absorption structure of fuselage


    Additional title:

    一种抗坠撞机身下部吸能结构


    Contributors:
    ZHANG XINYUE (author) / HUI XULONG (author) / LIU XIAOCHUAN (author) / BAI CHUNYU (author) / LI XIAOCHENG (author) / MOU RANGKE (author)

    Publication date :

    2024-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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