【摘要】 蜗卷弹簧是机械弹性储能的关键零部件,其一端与旋转芯轴连接,另一端与储能箱体内壁连接,连接部分的强度直接影响蜗卷弹簧工作的可靠性。针对蜗卷弹簧内端与芯轴的连接,提出了芯轴盒-螺钉组-压块连接方式,通过理论计算、实体建模及有限元分析,得到了连接中各零件的应力及其分布,提出螺钉组连接应力主要集中于螺纹杆接触面周围,连接的最大应力值出现在压块螺钉孔下边缘,而螺钉上的最大应力位于螺杆与蜗簧和压块接触面相切部位。最后通过仿真结果与理论计算结果的比较,验证了分析的正确性。研究成果为储能箱可靠运行提供有力依据。更多还原

【Abstract】 The spiral spring is a key component of mechanical elastic energy storage. One end of the spiral spring is connected with the rotating spindle,and the other end is fixed with the inner wall of the energy storage box.The strength of the connecting part directly affects the reliability of the spring working. Aiming to the connection between the spiral spring and the rotating spindle,a new connection scheme,that is,combination of spindle box-screw group-pressing block is put forward.The solid model and finite element model of the connection are created. The stressdistribution of the connection is obtained by FEM analysis. The results showthat the connection stress is mainly concentrated on the contact surface around the threaded rod,and the maximum stress is located at screw hole edge on the pressing block,while the maximum stress of the screw is located in the tangent place of the screw rod and the contact surface of spring and pressing block. Finally,the correctness of the analysis is verified by comparing the simulation results with the theoretical results. The research could provide a strong basis for the stable operation of energy storage box.更多还原