【作者】 窦圣杰；

【导师】 孙伟；

【作者基本信息】 大连理工大学 ， 机械工程， 2012， 硕士

【摘要】 在隧道和地下工程施工中,全断面岩石隧道掘进机(TBM)具有自动化程度高、安全高效和在超长隧道中连续作业的特点,代表了当代隧道掘进技术的发展方向。在TBM施工中,主要的破岩工具是盘形滚刀。通过大量工程施工实践的证明,刀具损坏严重是影响掘进效率的最重要因素。而在刀具损坏中,滚刀轴承的损坏又是其最常见的损坏形式。本文首先对盘形滚刀的结构及破岩机理进行简单的介绍,然后利用科罗拉多矿业学院滚刀受力的力学公式对滚刀轴承进行基本的性能分析。在此基础上,我对滚刀轴承进行一个由内到外的结构优化设计。首先利用数据优化软件对滚刀轴承内部结构主参数进行优化。选取轴承的基本额定动载荷作为优化目标,利用已有的约束条件对其主参数进行优化；然后在加载的情况下对滚刀轴承滚子两端不同的圆弧度和凸度量进行分析,得到不同载荷下滚子最优的圆弧度和凸度量,为滚刀轴承的设计提供了一定依据；最后利用Ansys Workbench软件,分析滚刀轴承内外圈安装过盈量对其初始游隙的影响,并在此基础上得到了工作游隙对滚刀轴承摩擦力矩与寿命的影响,为滚刀轴承的在设计游隙和装配时提供一定参考和帮助。更多还原

【Abstract】 In the construction of tunnels and underground works, TBM has a high degree of automation, security, efficient and continuous operation in the long tunnel, and represents the direction of development of contemporary tunneling.In the construction of TBM,a disc cutter is the main rock-breaking tool.The serious damage of the tool is the most important factors of affecting the tunneling effciency.In all forms of tool damage,the damage of cutter bearing is the most common form of damage.Firstly,there is a brief introduction of the structure of the disc cutter and the mechanism of the rock-breaking,and then I analyze the basic mechanical properties of the cutter in the help of the predicted mechanical formula of the Colorado School of Mines. On the basis,I have a design of strcutural optimization of the cutter bearing from the inside to the outside.Firstly,I do a optimization of the main parameters of the cutter bearing’s internal structure using the optimization software.It selects the basic dynamic load rating as the optimization and use the existing constraints.Secondly,I do a design of optimization about the arc degrees and convex metric of the roller in the case of the load and get the optimal arc degrees and optimal convex metric providing some basis for bearing design.Finally,I analyze the affect of the amount of interference to the initial clearance and the influence of the work clearance to the friction torque and the life of the cutter bearing,providing some basis and help for the assembly of the bearing.更多还原