新型摩擦式无级变速器的开发及其应力应变的改善性分析

Development of new friction CVT and analysis of its improvement with stress and strain

为了解决目前实际生产中常用的单滚轮平盘摩擦式无级变速器(CVT)中出现的一些重要部件关键部位的受力不均匀问题,在单滚轮平盘摩擦式无级变速器结构的基础上,利用两个平盘和二次摩擦传动,开发了一种新型多滚轮摩擦式无级变速器。首先,叙述了该无级变速器的传动原理;然后,给出了4种无级变速器可以采用的具体传动结构形式;最后,利用有限元分析软件ANSYS计算出了在某一例数据下两种变速器相应的关键部位的应力和应变云图,并以其数据为依据进行了对比分析。研究结果表明,采用该新型变速器其相应部位的应力及应变情况都有了较大的改善,同时显示了该新型变速器在受力方面的优势。

In order to solve the problems of uneven stress at key points on some important parts of the single-roller friction continuously variable transmission（CVT） now commonly used in practice, it was developed that a new type of muhi-roller friction CVT inspired by the structure of single-roller friction type CVT and using motion transmission by friction two times. Firstly, its transmission principle was introduced, and then four kinds of concrete possible structure was given out. At last, it was calculated and compared that the data of the stress and strain, and their cloud pictures in these key points with the finite element analysis software ANSYS used as an example. After analyzing the dates, the results indicate that their stress and strain conditions have been improved and the results show its advantages of the new type of CVT than the old one.