剩余压紧力条件下滑靴副的油膜特性及功耗  

Oil Film Characteristics and Power Consumption of Slipper Pair Under Redundant Pressing Force

作　　者：孙毅[1,2] 姜继海[1,2] 刘成强[1,2] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150080 [2]浙江大学流体传动及控制国家重点实验室,浙江杭州310027

出　　处：《华南理工大学学报（自然科学版）》2011年第1期111-116,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50875054);浙江大学流体传动及控制国家重点实验室开放基金资助项目(GZKF-2008003)

摘　　要：在考虑滑靴高速旋转时底面会形成热楔支承力的基础上,利用求解高次微分方程的研究方法建立了剩余压紧力状态下柱塞泵的滑靴底面的油膜模型,通过Matlab编程精确描述了剩余压紧力状态下滑靴油膜的动态特性,并以此为基础研究了滑靴的油膜厚度与负载、转速的关系,推导了滑靴高速运行所造成的功耗损失,同时分析了负载和转速变化对滑靴功耗损失的影响,并对二者的影响进行了比较.结果表明:转速的提高不仅会增大剪切流的损失,而且会增大压差流的损失,因此相对于负载的影响,转速对功耗损失的影响要大很多.In the consideration of the supporting force of wedge due to the high-speed rotation of the slipper,a model describing the oil film under the slipper of the piston pump in the presence of redundant pressing force is crea-ted by solving high-degree differential equations.Then,the dynamic characteristics of the oil film under above-mentioned conditions are described through Matlab programming.Moreover,the relationship between the oil film thickness and the load as well as the rotating speed is discussed,and the power losses of the slipper respectively due to the variations of load and rotating speed are analyzed and compared.The results indicate that the rotating speed affects the power loss more greatly than the load because the increase in rotating speed may result in the increase of not only the shear flow loss but also the pressure difference loss.

关 键 词：滑靴 支承力 油膜 功耗 

分 类 号：TH137[机械工程—机械制造及自动化]