介绍了一种新型对称加载行星牵引传动减速器，它保留了行星齿轮传动比大的优点．由于它采用３组行星轮与２个锥面钢套对称加载，利用牵引油拖动，工作面多，传动效率高；接触处采用共曲面，接触应力下降；与齿轮传动相比结构简单，制造安装方便，噪声小，特别具有不受行星齿轮传动齿数安装条件限制的优点 A new type of planetary traction gear reducer is introduced, which retains the advantages of large planetary gear ratio. Because of its symmetrical loading with three sets of planet wheels and two conical steel sleeves, it uses towing oil to drag, with many working faces and high transmission efficiency. The common curved surface is used at the contact point to reduce the contact stress. Compared with the gear drive, the structure is simple, Easy to install, low noise, especially with the planetary gear transmission number of teeth installed under the conditions of advantages