1.5MW风电机组变桨距用针摆行星减速器结构设计与传动效率研究

Study on Pin Cycloid Planetary Gear Reducer Used in Propeller Pitch Variator for 1.5MW Wind Turbine

为提高承载能力,提出使用两级"二齿差"针摆行星传动替代三级渐开线行星齿轮传动作为目前我国1.5 MW风力发电机组变桨减速器的传动型式。详细介绍了该新型减速器的设计结构及工作原理,并以转化机构法为基础,通过对针轮与摆线轮啮合效率、轴承效率、输出机构效率的分析,推导出该减速器传动效率的计算公式。

For the purpose of improving load capacity, the two - stage with two - teeth difference pin cycloid planetary gearing drive is proposed to replace the three - stage involute planet gear drive which used in 1.5 MW wind turbine. Structure and work principle of this new type reducer are described in detail. After that, to be considered, the main factors are pin cycloid gear meshing efficiency, bearing efficiency and output mechanism efficiency. Finally, the transmission efficiency of this new- type reducer is calculated by the inverted mechanism method.