【摘要】 本文提出了一种基于两挡行星变速机构的新型电动齿形带式制动器，建立了制动过程的动力学数学模型和有限元模型，研究了制动带与制动齿之间的动力学特性，以及制动部件的应力分布特征。根据带式制动器的结构特点和工作原理，制动过程可分为消除间隙阶段、滑动阶段、啮合阶段和碰撞阶段。制动鼓初始转速越大，碰撞阶段冲击扭矩越大，制动部件应力越大，初始转速的理想范围为50～100 r/min，极限应力出现在右制动带上，达到了514 MPa。本文为两挡变速机构全电化研究和电动齿形带式制动器的应用提供了理论基础。更多还原

【Abstract】 A new electrical toothed band brake is proposed based on the planetary gear shifting transmission. The corresponding mathematical model and the finite element model are established to investigate the braking dynamic characteristics and the stress distribution of brake components. According to the structural features and working principle of the brake, the braking process can be divided into a gap elimination stage, a sliding stage, a meshing stage, and a collision stage. The greater the initial speed of brake drum, the higher the impact torque in the collision stage, and the larger the stress of brake components. The ideal range of initial speed is 50—100 r/min, and the ultimate stress is 514 MPa appeared in the right brake band. This study present a wide range of possibilities for further investigation and application of the electrical toothed band brake.更多还原