Rigid-flexible coupling dynamics analysis of revolve drive system of segment erector

As a very important part of shield tunnel machine and double-shield TBM, segment erector is mainly used to erect the segment to an already excavated innerface of the tunnel and make the segment a permanent support. Revolve-driving system is a critical movement of the segment erector. Based on the FET and dynamic simulation software, a rigid-flexible coupling dynamics analysis model is established which takes into account the brace stiffness and tooth deformation and is aimed at specific working conditions of the segment erector. The load values were gaind after discussing the erecting of different segments. Then in accordance with the obtained load conditions, simulation of the model and analysis of the variation of angular velocity of the inner gear slewing bearing and the dynamic response of the engaging process are conducted. Increasing slewing bearing's stiffness can smooth the rotary mesh system and improve the accuracy of the rotary system's positioning. Finally this method can provides the foundation for the design of gear of the revolve drive system of segment erector.