| 风机变桨轴承螺栓的疲劳性能研究 |
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| 引用本文： | 陈俞廷,王慧.风机变桨轴承螺栓的疲劳性能研究[J].电机技术,2020(2):31-36. |
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| 作者姓名： | 陈俞廷 王慧 |
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| 作者单位： | 上海电气风电集团股份有限公司;浙江国检检测技术股份有限公司 |
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| 摘 要： | 杆部直径不同的变桨轴承螺栓的耐疲劳性能会直接影响风力发电机的使用寿命。采用静态拉伸试验、螺栓结合面拉开试验和疲劳试验等方法对杆部直径不同的变桨轴承的疲劳性能进行分析。结果表明,在相同运行工况下,缩小变桨轴承螺栓的杆部直径,降低螺栓与被连接件的刚度比,可有效改善螺栓的疲劳性能。
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| 关 键 词： | 变桨轴承螺栓 测力螺栓 载荷幅 刚度比 疲劳试验 |
Study on Fatigue Property of the Bolts Connecting Blade Bearing and Hub in the Wind Turbine |
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| CHEN Yuting,WANG Hui.Study on Fatigue Property of the Bolts Connecting Blade Bearing and Hub in the Wind Turbine[J].Electrical Machinery Technology,2020(2):31-36. |
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| Authors: | CHEN Yuting WANG Hui |
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| Affiliation: | (Shanghai Electric Wind Power Group Co.,Ltd.;Zhejiang GuoJian Testing Technology Co.,Ltd.) |
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| Abstract: | Service life of wind turbine is affected by the fatigue property of the bolts connecting blade bearing and hub when diameter of the stud varying.Static stretching test on the bolt,pull test at joint surface of screw and stud as well as the fatigue property test are performed,to analyze the fatigue property of the pitch bearing quipped with different stud diameters.The results show that both decreasing the stud diameter of the pitch bearing bolt or reducing stiffness ratio between bolts and clamping parts will improve the bolt fatigue property when wind turbine operating under same condition. |
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| Keywords: | pitch bearing bolt dynamo-meter bolt load amplitude stiffness ratio fatigue property test |
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