针对风力发电系统核心装置—增速齿轮箱动态性能影响整个风电系统问题,分析兆瓦级风电齿轮箱基本结构及传动原理,对各级齿轮传动轮齿修形量进行计算,并确定其修形曲线及参数.在兆瓦级齿轮箱台架上对修形前后齿轮箱动态特性进行试验分析.结果表明:合理的轮齿修形能提高风电齿轮箱动态性能；齿轮箱振动频率主要集中在中间级啮合频率、高速级啮合频率及倍频,修形后该频率处的振动加速度、时域冲击、振动烈度均相应减少.研究为风电齿轮箱的修形及动态性能优化提供重要依据.%Dynamic performance of a speed-growth gearbox being a core device of a wind power generating system has a direct effect on the whole wind power system. Here, the basic structure and driving principle of a megawatt level wind turbine gearbox were analyzed, the gear teeth modification volumes of its all pairs of gears were calculated and the dynamic performances of the gearbox before and after modification were tested. The results revealed that rational gear teeth modification can improve the dynamic performances of the wind turbine gearbox, the main vibration frequencies of the wind turbine gearbox focus on the mesh frequencies and their multiple-frequencies of its output stage and middle-level transmission. After modified, its vibration acceleration, shock response spectrum and vibration intensity dropped at these frequencies accordingly. This study provided an important basis for gear teeth modification of a wind turbine gear box and optimization of its dynamic performance.
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