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202型转向架轴箱密封结构不好的原因是,轴箱体和轴箱盖的配合局部产生1.4～2.6mm的间隙。本文在介绍几种国外客车滚动轴箱密封结构的基础上,对202型转向架轴箱密封结构提出了三种改进方案:采用大小唇防尘挡圈的迷宫式密封结构;采用橡胶油封防尘结构;在轴箱后盖和防尘挡圈间采用了油封挡圈。第三方案已装在厂修车上进行运用考验。
202 bogie axlebox sealing structure is not good because the shaft box and shaft cover with the local production of 1.4 ~ 2.6mm gap. In this paper, based on the introduction of several foreign passenger car rolling axle box sealing structure, three kinds of improved solutions are proposed for the 202 bogie axle box sealing structure: the labyrinth sealing structure with the size lip dust ring; the rubber oil seal dust Structure; Oil seal retainer ring is used between the back of the axle box and the dust-proof ring. The third program has been installed on the factory car to use the test.