中文摘要：

自动张紧带传动-齿轮传动是一种新型传动机构,为满足工作可靠性和优化结构参数,在受力平衡方程的基础上,以带传动可靠性为主要约束条件,以带的根数最少和齿轮体积最小为目标函数,对该装置进行了可靠性优化设计.该设计法可在保证带传动可靠度的同时迅速取得一组最佳结构参数,设计方法先进,极大提高了设计速度与设计质量,为该种新型传动提供了有效的设计方法.

英文摘要：

The automatic tension belt drive and toothed gearing is a new type mechanism. In order to satisfy the working safety and optimize the structural parameters, based on the force equilibrium equation, taking the relia- bility of belt drive as main constraint condition, the minimum number of belts and the minimum volume of gears as objective function, the device is designed by using reliability optimization design method. By using this method, a group of optimum structure parameters will be obtained rapidly and the reliability of belt drive can be ensured simul- taneously. This method is advanced. The design speed and quality are both improved greatly. An effect design method is proposed for the new type transmission.