宽V带无级变速器中轴向压力的研究  

Study on the Axial Forces of Wide V-Belt CVT

作　　者：莫帅[1] 李振亮[1] 李亚[1] 许玮[1] 

机构地区：[1]天津科技大学机械工程学院,天津300222

出　　处：《机械设计与制造》2012年第9期120-122,共3页Machinery Design & Manufacture

基　　金：国家科技部科技人员服务企业行动项目(2009GJB00009)

摘　　要：介绍了宽V带无级变速器的工作原理,阐述了V带当量摩擦系数的计算对于宽V带无级变速器中轴向力确定的重要性,根据平带传动的欧拉公式并结合宽V带无级变速器中V带传动的实际情况,提出了摩擦力方向角,推导出了V带传动的当量摩擦系数,无级变速器在传动过程中V带紧边和松边所受拉力的变化将导致摩擦力方向角的出现,当量摩擦系数是摩擦力方向角的函数,V带从绕进带轮到绕出带轮的过程中,当量摩擦系数逐渐增大,并将包角区域分为动弧区和静弧区,分别推导了宽V带无级变速器中主动轮和从动轮轴向压力的计算公式。The operational principles of wide V-beh CVT is introduced, elaborating the importance of the calculation of equivalent friction coefficient of V-belt drive in the confirm axial force of CVT.Based on Euler formula of flat belt and the actual peorormance of wide V-beh CVT, the formula of the equivalent friction coefficient and axial force of wide V-belt CVT/s put forward.The change of tensile force in tight and loose sides will lead to appearance of direction angle of friction.The equivalent friction coefficient is a function of direction angle of friction,and during the process of entrance and exit of V-belt from the pulley, equivalent friction coefficient increases gradually, dividing the belt contact into two region： inactive and active area,and respectively deducing the calculating formula for the axial pressure of active wheel and driven wheel in the V-belt CVT.

关 键 词：当量摩擦系数 摩擦力方向角 轴向压力 宽V带无级变速器 

分 类 号：TH16[机械工程—机械制造及自动化] TH132.46