The invention relates to the technical field of aircraft energy absorption structures, and discloses an energy absorption stand column structure for the lower portion of an aircraft cargo compartment floor, bolt holes are formed in the inner wall of a cargo compartment floor beam, and three sets of E-shaped combined stand columns are fixedly connected to the outer wall of one side of the cargo compartment floor beam through bolts; the E-shaped combined stand column further comprises an E-shaped supporting stand column structure edge strip part and an E-shaped supporting stand column structure web plate part, and the outer wall of one end of the E-shaped supporting stand column structure web plate part is fixedly connected with a machine body frame connecting end through bolts. The E-shaped combined stand column is guaranteed not to be bent and broken in the falling and colliding process, meanwhile, the E-shaped combined stand column is gradually damaged from bottom to top, therefore, the aim of greatly improving the crashworthiness of the fuselage structure can be achieved, the structure is guided to generate stable gradual failure, the weight of the structure can be reduced to a large extent after optimization design, and the cost is reduced. And the effect of saving the whole flight cost is achieved.
本发明涉及航空器吸能结构技术领域,且公开了一种用于飞机货舱地板下部的吸能立柱结构,所述货舱地板梁的内壁设有螺栓孔,所述货舱地板梁一侧的外壁通过螺栓固定连接有三组E型组合立柱,所述E型组合立柱还包括E型支撑立柱结构缘条部分和E型支撑立柱结构腹板部分,所述E型支撑立柱结构腹板部分一端的外壁通过螺栓固定连接有机身框连接端,本发明通过铺层递减设计和缘条变截面结构设计,保证E型组合立柱在坠撞过程中不会发生屈曲折断,同时使E型组合立柱发生自下而上的渐进破坏,因此可以达到大大改善机身结构耐撞性的目的,并引导结构发生稳定的渐进失效,且经过优化设计后可以较大限度上减少结构的重量,达到节约整体飞行成本的作用。
Energy-absorbing upright post structure for lower part of aircraft cargo hold floor
一种用于飞机货舱地板下部的吸能立柱结构
25.10.2022
Patent
Elektronische Ressource
Chinesisch
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