功率分流式行星锥无级变速器的设计研究

Design Research on Planet-Cone CVT with Power-Dividing

功率分流式行星锥无级变速器是以行星锥无级变速器作为封闭机构 ,以 2KH[A]齿轮差速器作为原始机构的组合式无级变速机构。分析了其组成原理 ,推导了传动比计算公式。分析了无封闭功率流传动的条件 ,有封闭功率流的情况下指出如何控制流动方向对传动有利。分析了原始机构 (齿轮差速机构 )两中心轮的齿数比对封闭功率流的影响。分析了封闭机构 (行星锥无级变速器 )在满足接触强度的条件下不发生打滑的最大传动能力 ,并给出了可作设计依据的输入功率与机构尺寸关系的公式。

The Power-dividing planet-cone continuously variable transmission is the combined CVT which the plane-cone CVT acts as its enclosed mechanism, and 2KH acts as fundamental mechanism. The combination principal of the combined CVT is analyzed and its formula of the transmission ratio is obtained. The transmitting condition of non-circulation power circuit is analyzed. In order to reveal wether the transmission is feasible, the transmitting conditions are elucidated. The gear ratio of two central gears of the fundamental mechanism (differential gear train) is analyzed on how to affect the circulation around circuit. The maximal transmitting power of the planetary mechanism (planet-cone CVT) is analyzed. And the formula of the input power and mechanism dimensions which may become the designing criteria are given.