多点液压同步提升自动化控制系统设计与实现

Design and Realization of Automatic Control System for Multi-point Hydraulic Synchronous Lifting

液压提升技术在大型重构件吊装中的应用非常广泛,但大部分控制系统存在自动化程度低、同步性较差、无钢绞线卷绕装置或钢绞线卷绕散乱等问题,需要过多的人工干预。针对上述问题,根据东江南支流港湾大桥钢箱梁多点同步提升施工的需要,通过Controller Link、以太网、Profinet DP等多种通讯方式,实现了设备之间的数据传输。基于TIA Portal、CX-Programmer、EBPRO等多种软件平台,结合主动卷绕的收线方式,采用位移同步、载荷监控和卷绕行程自动识别的控制策略,开发了一套多点液压同步提升自动化控制系统,并成功应用于项目中。现场使用结果表明,系统不仅能实现集群自动同步控制、均载控制、自动卷绕和故障保护等功能,而且具有很强的稳定性和可靠性,卷绕效果完全可控,达到了预期的效果。

Hydraulic lifting technology is widely used in the hoisting of large reconstruction parts,but most of the control systems have some problems,such as low automation degree,poor synchronicity,no strand winding device or strand winding disorder,which requires too much manual intervention.To solve the above problems,according to the needs of multi-point synchronous lifting construction of the steel box girder of the Dongjiang South Tributary Harbor Bridge,data transmission among the equipment was realized through Controller Link,Ethernet,Profinet DP and other communication methods.Based on TIA Portal,CX-Programmer,EBPRO and other software platforms,combined with the winding mode of active winding,the control strategy of displacement synchronization,load monitoring and automatic identification of winding stroke was adopted to develop a set of automatic control system of multi-point hydraulic synchronous lifting,which had been successfully applied in the project.The field application results show that the system can not only realize the functions of cluster automatic synchronization control,load sharing control,automatic winding and fault protection,but also has strong stability and reliability,and the winding effect is completely controllable,which achieves the desired effect.