盾构机主轴承密封结构研究

Research on the Seal Structure of Main Bearing for TBM

盾构机主轴承的密封是盾构机刀盘主驱动设计的技术关键,它直接影响主轴承及大小齿轮副的使用寿命。本文介绍了主轴承的密封圈形式和三种不同密封结构,从承压情况、油脂使用、维修调整和使用寿命等方面对三种密封结构进行了比较,为盾构机密封结构的选择提供了参考。

The seal of main bearing is the key technique in the design of ariving device for the cutterhed of Tunnel Boring Machine （TBM）, it influences on the service life of main bearing and gear pairs. This paper introduces the shapes of normal seal rings and compares the structures of three typical main bearing seals in standing pressure, seal grease use, maintenance and service life, which provides a reference for the selection of seal structures for TBM.