| 引用本文: | 魏静,杨攀武,秦大同,张爱强,白培鑫.柔性销轴式人字齿星型轮系均载特性[J].哈尔滨工业大学学报,2018,50(7):144.DOI:10.11918/j.issn.0367-6234.201707127 |
| WEI Jing,YANG Panwu,QIN Datong,ZHANG Aiqiang,BAI Peixin.Load sharing characteristics of the herringbone star gear transmission system with flexible pin[J].Journal of Harbin Institute of Technology,2018,50(7):144.DOI:10.11918/j.issn.0367-6234.201707127 |
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| 摘要: |
| 为研究人字齿星型轮系各路功率分流载荷分配机理，提高齿轮箱承载能力，采用节点有限元法建立柔性销轴式齿轮涡扇发动机人字齿星型轮系动力学模型.研究当量啮合误差下星型轮系动态均载性能，分析误差激励、销轴结构、工况参数对系统均载特性的影响.结果表明：齿轮偏心误差使中心齿轮振动轨迹偏离原点，是造成不均载的主要原因；系统均载系数随误差增加呈线性增加，且制造误差的影响大于安装误差；柔性销可以明显改善系统均载性能，在4种星轮柔性销轴中Montestruc改进的柔性销均载性能最佳；系统的均载系数随输入转速增加呈增大趋势，共振会导致系统的均载性能急剧下降；均载性能随系统承载功率增大而变好，且功率变小，柔性销对系统的均载性能改善的优势更加明显.
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| 关键词: 星形轮系 人字齿 均载 柔性销 齿轮动力学 |
| DOI：10.11918/j.issn.0367-6234.201707127 |
| 分类号:TH132.4 |
| 文献标识码:A |
| 基金项目:2016工信部民机专项项目(MJZ-2016-D-33) |
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| Load sharing characteristics of the herringbone star gear transmission system with flexible pin |
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WEI Jing,YANG Panwu,QIN Datong,ZHANG Aiqiang,BAI Peixin
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(State Key Laboratory of Mechanical Transmission(Chongqing University), Chongqing 400044, China)
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| Abstract: |
| To study the load distribution mechanism of power-split transmission and improve the carrying capacity of the gear box for herringbone star gear transmission system, a dynamics model for the geared turbofan(GTF) engine with a flexible pin was established based on finite element method. The dynamic load sharing characteristic of the system was studied in equivalent meshing error, and the influence of the error incentives, structure of pins, and working condition on load sharing characteristic was analyzed. The results show that the vibration track of the center gears deviates from the origin resulted by the eccentricity error, which is the primary cause for the inequality of load distribution. The load sharing coefficient of the system increases linearly with the error, and the influence of manufacturing errors is larger than assembling errors. The flexible pin can significantly improve the load sharing performance, and the flexible pin improved by Montestruc has best load sharing performance among the four kinds of pins. The load sharing coefficient declines with the increase of input speed, the resonance would lead to a sharp drop of loading sharing performance. The load sharing performance is improved with the increase of the input power, and the advantage of flexible pin is more prominent when the input power becomes lower.
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| Key words: star gear transmission herringbone gears load sharing flexible pin gear dynamics |
