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大功率分动器润滑散热系统的设计与试验研究 预览

Design and Experimental Research of Lubrication System of High Power Transfer Case
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摘要 大功率分动器作为某多轴超重型底盘传动系统的关键部件,具有传递转矩大、转速高、环境温差大等特点,单纯依靠飞溅润滑和自然风冷散热已无法满足多轴超重型底盘高机动性、高越野性和极限环境温度的使用需求,需采用强制润滑系统对分动器内部各产热点尤其是轴承位置进行润滑。因此,首先建立了传动部件各产热点的功率热能模型,通过热平衡条件估计各润滑点和总体的流量需求,然后建立液压仿真分析模型,设计匹配润滑系统管路;同时,针对动力传动系统功率大,自然风冷散热无法满足分动器热平衡要求的问题,通过计算分动器的表面风速、散热表面积评估分动器箱体自身的散热能力,并根据散热量需求匹配外置的风冷散热器和风扇。最后,通过台架和跑车试验,验证了所设计的大功率分动器强制润滑散热系统能够满足某多轴超重型底盘的各项使用要求。 The high power transfer case as a key component of a multi-axis super-heavy chassis transmission system,with the characteristics of large torque,high speed,and large temperature difference,rely on splash lubrication and natural air cooling has been unable to meet the need of the chassis for high mobility,high through off-road and extreme ambient temperature.It is necessary to use the forced lubrication system to lubricate the internal hot spots of the transfer case,especially the bearing position.Therefore,the power thermal energy model of the hotspots of the transmission parts is built first,through the heat balance conditions,the flow demand of the lubrication point and the overall are estimated,and then a hydraulic simulation analysis model is established,the matching lubrication system piping is designed.Aiming at the problem of the natural air cooling can't achieve the system thermal balance requirements in the great power of the transmission system,by calculating the surface wind speed and heat dissipation surface,the heat dissipation capacity of the transfer case itself is evaluated,the external air-cooled radiator and fan are matched according to the heat dissipation requirement.Finally,through the bench and running vehicle test,the design of the high power transfer case forced lubrication system to meet a multi-axis super-heavy chassis of the use of the requirements is verified.
作者 张磊 葛铠 单红波 李洪彪 赵焱明 张斌 慕连好 高丽丽 赵娟 蒋众 Zhang Lei;Ge Kai;Shan Hongbo;Li Hongbiao;Zhao Yanming;Zhang Bin;Mu Lianhao;Gao Lili;Zhao Juan;Jiang Zhong(Beijing Institute of Space Launch Technology,Beijing 100076,China;Rocket Force Military Representative Office in Jinan Area,Ji′nan 250000,China)
出处 《机械传动》 CSCD 北大核心 2018年第9期173-178,共6页 Journal of Mechanical Transmission
基金 国家留学基金委项目(201604980006)
关键词 分动器 润滑系统 散热系统 试验研究 Transfer case Lubrication system Cooling system Experimental research
作者简介 张磊(1982— ),男,辽宁沈阳人,工学博士,高级工程师,主要从事特种底盘传动技术研究。
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