基于PLC的盾构机推进液压控制系统设计  

Design of Thrust Hydraulic System for Tunnel Boring Machine Control System Based on PLC

作　　者：李景轩 Li jingxuan

机构地区：[1]西门子(中国)有限公司,陕西西安710000

出　　处：《工业控制计算机》2021年第2期131-133,共3页Industrial Control Computer

摘　　要：系统为盾构机提供推进推力和转向功能。针对盾构机推进系统的控制,设计了以西门子S7-400为核心控制器的盾构推进液压控制系统,采用Profibus-DP总线对控制系统ET-200子站I/O点进行控制,分布的控制盾构控制系统的设备。最后在现场设备实现了推进油缸的同步伸缩,掘进的转向,推进速度和推进压力调节的控制,控制系统的速度和精度得到了提升,更好的实现密封舱土压平衡的控制。The system provides thrust and steering function for Tunnel shield machine.In order to meet the requirement of tunnel boring machine control system,a shield thrust hydraulic control system is put forward in the paper.The Profibus-DP communication is used to control the I/O points of the ET-200 substation of the control system,and the distributed control for the equipment of the shield control system.Finally,the field equipment realizes the control of synchronous expand and contract of the hydraulic cylinder,posture adjustment,propulsion speed and propulsion pressure regulation,the speed and accuracy of the control system have been improved,so that the control of the earth pressure balance of the chamber can be achieved better.

关 键 词：盾构机 推进液压系统 西门子PLC PROFIBUS-DP 土压平衡控制 

分 类 号：U455.39[建筑科学—桥梁与隧道工程]