机械5

周转轮系--无级变速器设计 摘要 本课题是一种无级变速器，其是连续变化的驱动皮带轮和从动皮带轮之间的传动比（传动比被定义为每分钟转数或速度比），更具体地说，涉及一种压实的无级变速器中的机动车辆用。 它是已知的一种类型的无级变速器的具有V型皮带驱动和从动带轮之间延伸，并且通过改变在两个V形的开口（S）的大小控制的从动带轮的转数主动和从动滑轮。因此，在皮带轮和皮带轮的有效直径的带的位置可以改变，并且可以连续地改变输入轴和在所述无级变速器的输出轴之间的转速比。 它也被称为以形成从预定数目的金属箍，在它们的纵向可移动的V形块件安装的无级变速传动装置，该部件被连接在一起，并延长箍的总圆周周围。驱动滑轮的驱动力，然后由V形块构件的运动传递给从动皮带轮。 关键词：无级变速器V带 Co
nti
nuously Variable Tra
nsmissio
n Abstract The prese
nt i
nve
ntio
n relates to a co
nti
nuouslyvariable tra
nsmissio
nwhich co
nti
nuouslyvaries the tra
nsmissio
n ratio(tra
nsmissio
n ratio bei
ng defi
ned as the RPM or speed ratio) betwee
n a drivi
ng pulley a
nd a drive
n pulley, a
nd more particularly to a compacted co
nti
nuouslyvariable tra
nsmissio
n used i
n a motorizedvehicle. It is k
now
n that o
ne type of a co
nti
nuouslyvariable tra
nsmissio
n has a V-belt exte
ndi
ng betwee
n a drivi
ng a
nd drive
n pulley a
nd co
ntrols the
number of the revolutio
ns of a drive
n pulley byvaryi
ng the size of a V-shaped ope
ni
ng(s) i
n both the drivi
ng a
nd drive
n pulleys. Thus, the positio
n of the belt o
n the pulley a
nd the effective diameter of the pulley ca
n bevaried, a
nd it is possible to co
nti
nuouslyvary the RPM ratio betwee
n the i
nput shaft a
nd the output shaft i
n the co
nti
nuouslyvariable tra
nsmissio
n. It is also k
now
n to form a co
nti
nuouslyvariable tra
nsmissio
n mea
ns from a predetermi
ned
number of metallic hoops, upo
nwhich lo
ngitudi
nally shiftable V-shaped block members are mou
nted, the members are li
nked together a
nd exte
nd arou
nd the total circumfere
nce of the hoops. The drivi
ng force of the drivi
ng pulley is the
n tra
nsmitted to the drive
n pulley by the moveme
nt of the V-shaped block members. The keyword : CVT V-belt 目录 前言1 第一章无级变速器的发展和现状2 1.1无级变速器的出现2 1.2机械无级变速器2 1.3无级变速研究现状3 1.4无级变速器的展望3 第二章传动方案的设计4 2.1电动机的选择4 2.2传动方案4 2.3分配传动比6 第三章周转轮系的设计7 3.1轮系7 3.2第一组周转轮系参数计算8 3.3丝杠端齿轮的设计16 3.4第二组周转轮系的设计18 第四章三角皮带无级变速器设计22 4.1带式无级变速器的基本组成和工作原理23 4.2带式无级变速器的基本类型和调速方式24 4.3宽V带无级变速器的设计计算25 第五章无级变速器中滑动29 5.1摩擦传动中的滑动30 第六章速度调节机构的设计31 6.1螺旋传动的类型和应用31 6.2滑动螺旋传动的设计与计算32 第七章其他零件的设计36 7.1轴的设计36 结论40 致谢41 参考文献42