The invention relates to the technical field of railway vehicle buffering, in particular to an energy absorption structure with rigidity changing directionally. Comprising a plurality of rectangular units which are mutually connected in the horizontal direction and the vertical direction, free ends are arranged in the four directions of each rectangular unit, every two adjacent free ends of every two adjacent rectangular units are connected through a unit connecting plate, each rectangular unit comprises four metal plate frames, and the four metal plate frames are overlapped and nested to form the rectangular unit. And in the rigidity gradient increasing direction, the free end of the inner side of the metal plate frame of each layer of rectangular unit is gradually prolonged. Each rectangular unit internally comprises four same metal plate frames, the four metal plate frames are overlapped and nested, the free ends of the metal plate frames in the rectangular units are gradually prolonged in the rigidity gradient increasing direction, and an energy absorption structure with the rigidity changing directionally is formed. According to the energy absorption structure, rigidity directional change can be achieved through length change of the metal plate frame, and compared with an energy absorption structure without rigidity change, the energy absorption structure has better buffering capacity.
本发明涉及轨道车辆缓冲技术领域,具体为一种刚度定向变化的吸能结构。包括多个在水平方向和竖直方向相互连接的矩形单元,每个矩形单元的四个方向上均设有自由端,相邻两个矩形单元的相邻两个自由端通过单元连接板连接,矩形单元包括四个金属板框架,四个金属板框架交叠嵌套,形成矩形单元,沿着刚度梯度增加方向,每一层矩形单元的金属板框架内侧自由端逐渐延长。本发明每个矩形单元内包含四个相同的金属板框架,四个金属板框架交叠嵌套,矩形单元内金属板框架自由端沿着刚度梯度增加方向逐渐延长,形成一种刚度定向变化的吸能结构,该吸能结构通过金属板框架的长度变化就能实现刚度定向变化,相比于没有刚度变化的吸能结构具有更好的缓冲能力。
Energy absorption structure with directionally changed rigidity
一种刚度定向变化的吸能结构
2025-04-11
Patent
Electronic Resource
Chinese
Two-wheeled vehicle rear suspension system with gradually-changed rigidity
European Patent Office | 2023
|Micro-hinges changed flexural rigidity intermittently for micromechanism joints
British Library Online Contents | 2003
|Automotive Underbody With High Rigidity And Sound Absorption
European Patent Office | 2019