自行车椭圆锥齿轮传动机构的设计

摘要

针对现有圆锥齿轮传动自行车传动机构存在踩踏用力不均匀、"死点"区域过大等问题, 提出了一种新的齿轮传动——椭圆锥齿轮传动.通过对椭圆锥齿轮传动的受力分析, 推导出自行车骑行脚蹬力与椭圆锥齿轮偏心率的函数关系式, 并进行Matlab仿真和三维数字建模.结果证明: 使用椭圆锥齿轮传动比传统锥齿轮传动踩踏用力均匀、发力区间更大.%Aiming at the shortcomings of existing bicycle transmission, a new gear transmission-elliptic bevel gear drive is proposed. By analyzing the curve of elliptical bevel gear and the force of the transmission mechanism of elliptical bevel gear, concluded the function relation between riding pedal force and elliptical bevel gear eccentricity, and Matlab simulation and three-dimensional digital modeling are present. The results show that using elliptical bevel gear driving is more uniform and more powerful than the traditional bevel gear transmission.