全断面掘进机刀盘(TBM)是TBM的核心部件,TBM刀盘模型装配过程耗费设计人员大量的时间,不仅降低了刀盘整体设计的效率,还会由于操作人员对各类三维软件的不熟悉而降低刀盘装配的可靠性,因此对TBM刀盘自动装配进行系统开发很有必要。对工程上常见的几类典型结构刀盘装配体模型进行Solid Works二次开发做了研究,运用C#语言在Visual Studio 2010环境下进行Windows界面开发,最终开发出TBM刀盘自动装配系统的Solid Works插件,该系统具有自动装配和干涉检查功能,保证了自动装配后的刀盘模型准确、可靠。
Achieving highly efficient extrication of the tunnel boring machine(TBM)cutter-head driving system from the collapsed surrounding rock has become a key problem globally,and significant effort has been directed to improve TBM cutter-head extricating ability.In this study,the characteristics of a hydro-viscous device have been investigated to improve extricating performance of the TBM cutter-head.A numerical method based on an explicit pressure-linked equation is presented for computing the film parameters of the HVC,which is then applied to investigate extrication characteristics of a TBM cutter-head with a hydro-viscous clutch(HVC).The explicit pressure-linked equation is derived from the Navier–Stokes equations and the conservation equation,where boundary conditions are involved.The model of a cutter-head driving system with an HVC is established,and the extrication characteristics of the cutterhead driving system are analyzed and compared with three extrication strategies.The variation in extrication torque shows that the linear strategy or positive parabolic strategy are preferred for their relatively high extrication efficiency and low rigid impact,and the effects of throughflow rate on torque transmission are also investigated.The test rig of the TBM cutter-head driving system was set up to validate the numerical method and the model of a cutter-head driving system,and the feasibility of the proposed numerical method for researching the extrication of the TBM cutter-head is verified.
