外啮合齿轮泵侧板磨损分析
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摘要
针对联合收割机液压系统中齿轮泵浮动侧板磨损严重的问题,重点研究了齿轮端面与侧板密封面摩擦副的失效机理。以某型号联合收割机用齿轮泵为例,首先建立齿轮泵三维流体域模型;其次运用CFD软件解析齿轮泵内部流场,以获取作用于侧板两面的反推力和压紧力;再次运用热切油膜理论计算齿轮端面与侧板密封面摩擦副的油膜温升,确定导致侧板磨损的关键因素。该研究为降低侧板磨损而进行结构优化设计提供了理论基础和技术支撑。
For the serious wear of the floating end plate of the high-pressure gear pump of the combine harvester, the failure mechanism of the friction pair of the gear end face and the side plate sealing surface is mainly studied. First, the three-dimensional fluid domain model of the gear pump is established; Secondly, the internal flow field of the gear pump is analyzed by used CFD software toget the reverse thrust and pressing force acted on both sides of the end plate. Finally, the temperature rise of the oil film of the friction pair of the gear end face and the side plate sealing surface is calculated by using the theory of hot-cut oil film. This study provides theoretical basis and technical support for structural optimization design to reduce side panel wear.
For the serious wear of the floating end plate of the high-pressure gear pump of the combine harvester, the failure mechanism of the friction pair of the gear end face and the side plate sealing surface is mainly studied. First, the three-dimensional fluid domain model of the gear pump is established; Secondly, the internal flow field of the gear pump is analyzed by used CFD software toget the reverse thrust and pressing force acted on both sides of the end plate. Finally, the temperature rise of the oil film of the friction pair of the gear end face and the side plate sealing surface is calculated by using the theory of hot-cut oil film. This study provides theoretical basis and technical support for structural optimization design to reduce side panel wear.
引文
[1]王向前,孔青松,刘伟,刘宝林.齿轮泵试验故障分析与解决措施[J].液压气动与密封,2018,38(3):85-87.
[2]SujanDhar, AndreaVacca. A novel FSI-thermal Coupled TEHD Model and Experimental Validation Through Indirect Film Thickness Measurements for the Lubricating Interface in External Gear Machines[J]. Tribology International, 2015,(82):162-175.
[3]孟嘉嘉,刘伟,韩志英.高压齿轮泵浮动组合轴套的设计[J].液压气动与密封,2017,37(5):52-54.
[4]郝振华,王小鹏.内啮合齿轮泵浮动侧板轴向负载分析[J].液压气动与密封,2017,37(8):5-8.
[5]徐其俊.联合收割机液压系统技术升级对策[J].液压气动与密封,2018,38(4):1-4.
[6]刘巍,王安麟,单学文.齿轮泵主从动齿轮腔压力分布的非对称性分析[J].东北大学学报(自然科学版),2015,36(9):1327-1330.
[7]郭善新.齿轮泵侧板开槽对噪声的影响[J].液压气动与密封,2010,30(5):54-55.
[8]任小鸿,陈丽,刘邦友,高朝祥.耐磨减摩涂料在齿轮泵侧板铜基表面上的应用[J].润滑与密封,2016,41(6):125-128.
[2]SujanDhar, AndreaVacca. A novel FSI-thermal Coupled TEHD Model and Experimental Validation Through Indirect Film Thickness Measurements for the Lubricating Interface in External Gear Machines[J]. Tribology International, 2015,(82):162-175.
[3]孟嘉嘉,刘伟,韩志英.高压齿轮泵浮动组合轴套的设计[J].液压气动与密封,2017,37(5):52-54.
[4]郝振华,王小鹏.内啮合齿轮泵浮动侧板轴向负载分析[J].液压气动与密封,2017,37(8):5-8.
[5]徐其俊.联合收割机液压系统技术升级对策[J].液压气动与密封,2018,38(4):1-4.
[6]刘巍,王安麟,单学文.齿轮泵主从动齿轮腔压力分布的非对称性分析[J].东北大学学报(自然科学版),2015,36(9):1327-1330.
[7]郭善新.齿轮泵侧板开槽对噪声的影响[J].液压气动与密封,2010,30(5):54-55.
[8]任小鸿,陈丽,刘邦友,高朝祥.耐磨减摩涂料在齿轮泵侧板铜基表面上的应用[J].润滑与密封,2016,41(6):125-128.