一种带附加气室的空气悬架剪式座椅振动特性理论分析  

Study on Vibration Characteristics of One Scissors Linkage Seat with Suspension of the Air Spring and Auxiliary Chamber

作　　者：刘委[1] 朱思洪[1] 王家胜[2] 朱星星[1] 

机构地区：[1]南京农业大学,南京210031 [2]青岛农业大学,青岛266109

出　　处：《中国机械工程》2010年第14期1647-1650,共4页China Mechanical Engineering

基　　金："十一五"国家科技攻关计划资助项目(2006BAD11A02)

摘　　要：将带有附加气室的空气弹簧应用于一种剪式座椅中,建立了该空气悬架座椅系统运动微分方程,推导出了系统的等效垂向刚度、等效阻尼系数、固有频率及阻尼比的计算公式,分析了该空气悬架座椅系统的影响因素,并以ContiTech公司的SK37-6型膜式空气弹簧和HY-Z04型剪式座椅为例,计算出了不同簧载质量、不同节流孔开度条件下系统的等效刚度、等效阻尼系数及固有频率,分析了其变化规律。研究结果表明,随着节流孔开度的增大,系统的固有频率逐渐减小;可以通过调节节流孔开度的大小,改变系统的固有频率,以适应不同的驾驶员体重和路况,进一步改善座椅的乘坐舒适性。A air spring with auxiliary chamber was used in one kind of scissors linkage seat.The motion differential equation of the air suspension seat was established and the theoretical computing formulation of its equivalent vertical stiffness,equivalent damping coefficient,natural frequency and damping rate were deducted,besides,the influence factors of them were analyzed.Taking SK37-6 membrane type air spring of ContiTech and HY-Z04 type scissors linkage seat as an example,the equivalent stiffness,damping coefficient and natural frequency in different conditions of the sprung mass and the throttle＇s size were computed and analyzed.Study results show that the natural frequency descends with the throttle＇s size increasing;as a result,in order to adapt different driver＇s weights and road conditions,the systerm＇s natural frequency can be changed by adjusting the throttle＇s size to make it more comfortable.

关 键 词：空气弹簧 附加气室 剪式座椅 等效刚度 

分 类 号：U463.3[机械工程—车辆工程]