汽车发动机水泵带轮结构改进设计  

IMPROVED STRUCTURE DESIGN OF BELT WHEEL IN AUTOMOBILE ENGINE WATER PUMP

作　　者：解芳[1,2] 冯长虹 王召兴 陈铁军[1] 

机构地区：[1]郑州大学控制科学与工程博士后流动站,郑州450001 [2]南阳理工学院机械与汽车工程学院,南阳473004 [3]河南省西峡汽车水泵股份有限公司博士后工作站,西峡474500

出　　处：《机械强度》2014年第2期285-289,共5页Journal of Mechanical Strength

基　　金：中国博士后科学基金第54批面上资助项目(2013M541985);2012年度河南省博士后科研资助项目(2012091);河南省教育厅科学技术研究重点项目(13A460808)~~

摘　　要：为了提高汽车发动机水泵中传统实心式结构带轮的强度,基于其受力特点分别提出了腹板式和凹凸实心式两种结构改进方案,通过构建其有限元分析模型,对比研究了结构改进前后带轮内部的应力分布情况。研究表明:离心力对带轮应力的影响几乎可以忽略不计;在相同外载荷作用下,腹板式带轮的最大应力与传统实心式相比差别不大,但是其应力分布与承载方向密切相关;而凹凸实心式带轮的最大应力远小于传统实心式及腹板式,因此采用凹凸实心式结构可明显改善带轮的强度。最后,通过汽车水泵总成可靠性试验验证了有限元分析结果的可靠性。In order to improve the strength of the traditional solid structural belt wheel in the automobile engine water pump, two kinds of novel structures that web and concave-convex solid of belt wheel were proposed based on its loading characteristics. Moreover, the finite element models of belt wheels respectively for the three types were established in order to investigate the stress distribution of belt wheels comparatively. The results show that： the effects of centrifugal force on the belt wheel stress almost can be neglected. Furthermore, under the same external load, there is little difference between the web type and the traditional solid type of belt wheel for the maximum stress, while the stress distribution of web structure is closed related to the load direction. However, the maximum stress of concave-convex solid of belt wheel is much less than that of other two types, so the concave-convex solid structure can be adopted to improve the belt wheel strength significantly. Finally, the reliability of the finite element results was verified by the assembly refiability test of automobile engine water pump.

关 键 词：带轮 应力 有限元分析 水泵 结构设计 

分 类 号：TH122[机械工程—机械设计及理论]