以9 MW海上风电机组两级行星一级平行轴齿轮箱为研究对象,采用集中参数法建立其多体动力学模型,研究各级浮动太阳轮和内齿圈的支撑刚度对两级行星轮系均载特性和浮动构件振动特性的影响,基于正交试验法得到支撑刚度对传动轴振动的影响规律并对其进行优化设计。研究结果表明：综合考虑浮动构件的影响,在两级均载系数对支撑刚度敏感的区间内,浮动构件支撑刚度显著影响齿轮箱的振动特性;与仅考虑齿轮箱均载特性相比,优化后齿轮箱整体振动指标降低8.9%。
Abstract
Taking two-stage planetary and one-stage parallel shaft gearbox of the 9 MW offshore wind turbine as the research objective, the multi-body dynamic model for the gearbox is established by using the lumped parameter method. The impact of support stiffness of the floating sun gear and ring gear on the load-sharing of the two-stage planetary and the vibration characteristics of the floating components were researched. Based on the orthogonal test method, the influence of the support stiffness on the vibration of transmission shafts was obtained and the optimization design was carried out. The results show that the support stiffness of the floating components significantly affects the vibration characteristics of the gearbox in the range where the two-stage load sharing coefficient is sensitive to the support stiffness. Compared with only considering the load sharing characteristics, the overall vibration index of the gearbox is reduced by 8.9% after optimization.
关键词
海上风电机组 /
动力学分析 /
振动 /
齿轮箱 /
支撑刚度
Key words
offshore wind turbines /
dynamic analysis /
vibration /
gearbox /
support stiffness
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基金
国家重点研发计划（2018YFB1501304）
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