TBM主轴承润滑系统减少故障的对策

主轴承对于隧道掘进机的工程地位特别重大，良好润滑是主轴承正常工作的重要保障。总结和分析TBM主轴承结构及特点，论述润滑方式及密封对于保证主轴承状态的作用，结合以往施工实践中曾经出现的主轴承故障，从状态监测、维护保养及运行操作三个方面，针对不同的侧重点，分别提出了避免和减少主轴承故障的对策，强调以加强维护保养、按技术规范操作和控制TBM掘进作为主轴承良好状态的重点保证措施，出现故障及时维修，只有这样才能为掘进施工保驾护航。

Technical Measures to Reduce the Failures of the Lubrication System of the Main Bearing of the TBM

The main bearing of a TBM plays an extremely important role in engineering,while good lubrication is central to the normal work of the main bearing. The structural composition and characteristics of the main bearing of the TBM are summed up and analyzed in the paper, with the lubricating modes of and the effects of the sealing on ensuring the normal operation of the main bearing dealt with. With the failures of the main bearing in the past construction experiences taken into account, some technical measures to reduce and prevent the failures of the main bearing are put forward from the angles of state-monitoring, maintenance and operation, with stress placed on different important points. It is emphasized in the paper that the strengthening of maintenance,operating strictly according to the technical specifications and controlling the drilling progress are always the most important ensuring measures to keep the main bearing in good condition. In case of any malfunction, timely maintenance must be performed. Only in this way can the safe tunneling construction be firmly ensured.