减振器反弹机理的分析与研究  

Research on Causations of Piston Rod Rebound of Shock Absorber

作　　者：周长城[1] 

机构地区：[1]山东理工大学交通与车辆工程学院

出　　处：《拖拉机与农用运输车》2008年第2期9-11,13,共4页Tractor & Farm Transporter

基　　金：武器装备预研基金项目(51404040104BQ01);全国优秀博士论文育苗及奖励基金(010003)

摘　　要：对减振器活塞杆出现反弹的机理进行分析,给出了出现气体反弹减振器油液使用前、后的理化特性数值。对油液气穴产生的原因进行了研究,提出了避免气穴产生的结构设计措施;对油液层流和紊流运动进行分析,建立了减振器临界速度的概念;对活塞杆摩擦力进行了分析,建立摩擦力解析计算式,给出了减小摩擦力的措施;对减振器油封的结构以及吞入空气的机理进行了探讨,提出了减振器油封结构设计应采取的措施。In this article, the causations of piston rod rebound is analyzed. Shown the tested physics characteristic value of the shock absorber oil before and after by the air rebound of tele-scope shock absorber. Studied on the principium of the air pocket emergence, the measures for avoiding air pocket is put forward. Analyzed the oil laminar flow and turbulence flow, the critical velocity of shock absorber is established. Researched the friction force of cylinder rod, the formula of friction force is found, and the methods is given for reduce the friction force. Studied on the structure of airproof ring and the mechanism of inbreathing air into the shock absorber,the techniques for structure design of airproof ring is put forward.

关 键 词：减振器 活塞杆反弹 密封圈 气穴 

分 类 号：U463.335.1[机械工程—车辆工程] TH703.63[交通运输工程—载运工具运用工程]