轮胎拆装机轮辋夹紧装置的设计与可靠性分析  

Design and Reliability Analysis of Rim Clamping Device for Tire Changer

作　　者：霍凤伟 赵凤芹[1] 周立瑶 HUO Feng-wei;ZHAO Feng-qin;ZHOU Li-yao(School of Mechanical and Power Engineering,Yingkou Institute of Technology,Liaoning Yingkou 115014,China)

机构地区：[1]营口理工学院机械与动力工程学院,辽宁营口115014

出　　处：《机械设计与制造》2022年第7期235-238,共4页Machinery Design & Manufacture

基　　金：辽宁省自然科学基金项目(20180551042);营口理工学院博士-企业双创项目(QB-2018-07)。

摘　　要：现有四爪式轮辋夹紧装置由于夹紧刚度不同,气缸驱动力不能均匀分配给四个卡爪,会产生四爪不在一个圆周上、夹紧时轮毂非均匀变形、夹紧不牢固等问题。夹紧时轮辋变形量过大不仅影响轮胎的拆装,还会对轮胎寿命产生不利影响,而为了防止夹紧不牢固,往往需要较大的夹紧力,这可能夹伤轮辋。针对该缺点设计了一种夹爪夹紧刚度相同且夹紧力相同的汽车轮胎拆装机轮辋夹紧装置,建立了轮辋夹紧装置的运动学与力学方程,分析了位移、速度、加速度以及夹紧力的变化规律。分析结果表明该装置速度稳定,且夹紧力随轮辋尺寸的变小而变小,能防止过大的夹紧力损伤轮辋。Due to the clamping stiffness difference of the existing four claw rim clamping device,the driving force of pneumatic cylinderscan not be evenly transmitted to the four claws,which results in problems such as the four claws are not on a circle,the hub is notdeformed evenly during clamping,and the clamping is not firm.The excessive deformation of the rim during clamping not only affects the disassembly and assembly of the tire,but also adversely affect the service life of the tire.A larger clamping force is often required to avoidan invalid clamping.which may scratch the rim.In view of this shortcoming,a rim clamping device with identicalclaw clamping stiffness and identical clamping force infor tire changers is designed,the kinematic and mechanical equations of the rim clamping device are established,and the variation laws of displacement,velocity,acceleration and clamping force are analyzed.The analysis results show that the speed of the device is stable and the clamping force decreases with the decreaseof the rim size,whichcan avoid to damage small rims due to the excessiveclamping force.

关 键 词：轮辋夹紧装置 轮胎拆装机 夹紧刚度 仿真分析 

分 类 号：TH16[机械工程—机械制造及自动化] TH122