移动模架安全监控系统研究

发布时间：2019-01-09 14:48

【摘要】：桥梁建设是交通基础建设中的重要组成部分,移动模架施工技术作为一种先进桥梁施工工艺,以其特有优势赢得了众多业界人士的青睐,市场占有率正迅速提高。然而,移动模架施工过程中由于设备、管理、操作等原因导致的安全事故却时有发生,为移动模架造桥工艺的进一步推广应用带来了不利影响。为了避免移动模架安全事故的发生,消除移动模架施工过程中的安全隐患,本文进行了移动模架安全监控系统的研究。本文针对某型下行式移动模架的全施工过程展开研究,搭建了该型下行式移动模架的三维模型并结合有限元方法对各个施工环节的不安全因素进行了分析,结合工程实际提出了移动模架安全监控系统方案。基于PLC、ZigBee无线通信等技术完成了安全监控系统的软硬件开发。硬件开发包括数据采集部分(左、右开模位移、纵移位移、风速、前后主千斤顶支反力和纵移液压缸顶推力采集对应的传感器选型设计)设计、控制器PLC及人机界面的选型设计、视频监控系统设计和系统外部电路的设计。依据系统的硬件平台,以西门子编程软件microwin v4.0 sp9为软件开发环境,采用梯形图语言完成系统编程,以WINCC flexible 2008 sp4为软件开发环境实现移动模架运行状态的实时显示、报警等功能。将建立的移动模架安全监控系统通过上机运行实验的方式检验该系统的可靠性和适应性,同时查找该系统在安装、使用之中的不足,以便进一步改进、完善。该移动模架安全监控系统经过在岳阳某工地近一年的运行,能够及时有效地监控设备运行状态,并在危险工况出现时发出报警信号,提醒监管人员及时采取有效措施避免事故的发生,达到了预定设计目标。
[Abstract]:Bridge construction is an important part of traffic infrastructure construction. As an advanced bridge construction technology, mobile mold frame construction technology has won the favor of many people in the industry with its unique advantages, and the market share is increasing rapidly. However, the safety accidents caused by the equipment, management and operation in the construction process of the mobile mould frame occur from time to time, which has brought adverse influence to the further popularization and application of the mobile mould frame bridge construction technology. In order to avoid the occurrence of the safety accident and eliminate the hidden danger in the construction of the mobile mould frame, this paper studies the security monitoring system of the mobile mould frame. In this paper, the whole construction process of a downlink movable die frame is studied, and the 3D model of the downlink moving die frame is built, and the unsafe factors of each construction link are analyzed with the finite element method. Combined with engineering practice, the scheme of mobile mould frame security monitoring system is put forward. The software and hardware of the security monitoring system are developed based on PLC,ZigBee wireless communication technology. Hardware development includes data acquisition part (left and right open die displacement, longitudinal shift, wind speed, reaction force of front and rear main Jack support and sensor type selection design corresponding to longitudinal hydraulic cylinder top thrust acquisition). Controller PLC and HMI selection design, video surveillance system design and system external circuit design. According to the hardware platform of the system, using Siemens programming software microwin v4.0 sp9 as the software development environment, using ladder diagram language to complete the system programming, and using WINCC flexible 2008 sp4 as the software development environment to realize the real-time display of the running state of the mobile mold frame. Alarm function. The reliability and adaptability of the system are tested by the running experiment of the mobile mould frame, and the shortcomings of the system in installation and use are also found in order to further improve and perfect the system. After nearly a year of operation in a certain construction site in Yueyang, the safety monitoring system of the mobile mould frame can monitor the running state of the equipment in time and effectively, and send out an alarm signal when the dangerous working condition appears. To remind supervisors to take effective measures to avoid accidents in time and achieve the intended design goal.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.463

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