The invention discloses a self-adaptive variable-stiffness fin and a working method thereof. The fin comprises an active swing mechanism, the active swing mechanism comprises a motor and an active swing part, and the active swing part is connected with an output shaft of the motor; the driven fin is rotationally connected with the driving swinging part; the two ends of the torsional spring are connected to the driving swing part and the driven fin respectively; the variable stiffness assembly comprises a shifting block and two spring sets, the shifting block is connected with the passive fin, the two spring sets are arranged on the two sides of the shifting block respectively, the end of the shifting block can make contact with the spring sets, and each spring set comprises a plurality of springs. Two elastic pieces, namely the torsional spring and the spring set, are arranged, so that the torsional spring provides rigidity for the fin when a shifting block in the passive fin does not make contact with the spring set; when the shifting block in the passive fish fin is in contact with the spring set, the torsional spring and the spring set jointly provide rigidity for the fish fin. Therefore, the rigidity of the fin can change along with the change of the swing amplitude. The invention relates to the technical field of bionics.
本申请公开了一种自适应变刚度鱼鳍及其工作方法。本鱼鳍包括主动摆动机构,其包括电机和主动摆动件,主动摆动件与电机的输出轴连接;被动鱼鳍,其与主动摆动件转动连接;扭簧,其两端分别连接至主动摆动件和被动鱼鳍;变刚度组件,其包括拨动块和弹簧组,拨动块与被动鱼鳍连接,弹簧组的数量有两个并分别设置在拨动块的两侧,拨动块的端部能够与弹簧组接触,各个弹簧组内包含若干个弹簧。通过设置扭簧和弹簧组两种弹性件,在被动鱼鳍中的拨动块未接触到弹簧组时,扭簧提供鱼鳍的刚度;当被动鱼鳍中的拨动块接触到弹簧组时,扭簧和弹簧组共同提供鱼鳍的刚度。从而,鱼鳍的刚度能够随摆动幅度的变化而变化。本申请涉及仿生学技术领域。
Self-adaptive variable-stiffness fin and working method thereof
一种自适应变刚度鱼鳍及其工作方法
2025-03-18
Patent
Electronic Resource
Chinese
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