《皮带运输机的控制》由会员分享，可在线阅读，更多相关《皮带运输机的控制（8页珍藏版）》请在金锄头文库上搜索。
1、皮带运输机的控制Revised at 2 pm on December 25, 2020.随着矿井大型化、机械化和自动化水平的不断提高，皮带运输机已成为高产高效 矿井输煤的主要运输设备。在皮带运输机的连续生产中，常会出现打滑、撕裂、跑 偏、堆煤等现象。为了提高带式输送机运行的可鼎性，LI前已采用多种装置对皮带运 输机进行保护，山于各装置间相互独立，不能对检测信息进行综合判断，出现误报， 从而造成输送机不应有的停机，给矿井生产造成了巨大的经济损失。因此，只有综合 了多方面的故障信息，利用智能判断方法，才能在现有的基础上，提高整个输送机系 统的安全性、可靠性，实现智能化控制，提高矿井生产的效率。本
2、文首先详细分析了皮带运输机各种故障的原因及检测方法，设计了系统的整体 方案及控制系统，采用了选用双速度传感器来检测皮皮带运输机的打滑、断带等故障 的方法。通过比较传感器的性能，选定了速度传感器、温度传感器、煤位传感器等型 号。其次采用了适应工业环境、可靠性高、抗干扰能力强的西门子S7-200系列PLC为 控制核心，设汁了皮带运输机的综合保护系统。采用了 PLC的高速计数器进行频率量 采集和故障综合分析的方法，提高了系统故障检测的可幕性和准确性。在软件构建中，设汁了主程序和各功能模块子程序，选用了与CPU配套的低成本 的西门子文本显示设备，增强操作员与保护系统的人机交互能力。最后开发了利用RS4
3、85总线方式实现的PLC与单片机的通讯系统，分别设计了系 统的硬件电路、通信协议及软件流程，编制了软件程序。同时，PLC作为Prof让us-DP 总线的下位机与上位机通讯，最终实现了对皮带运输机运行状态的远程监测。调试结果表明：保护系统运行稳定，动作可靠，各项性能指标均满足设计要求。关键i司：皮带运输机，可编程控制器，保护系统，RS485ABSTRACTAs me improvement of mine maximization,空boui空“94卫型beltconveyer has been the main transport equipment in high and efficient
4、 coalfield . During continuous operation period of conveyer belt, the phenomenon such as belt creeps, broken belt, tearing, running deviation, coal heaps would happen, which result in serious consequences . In order to improve the reliability many types of equipment shave been used to protect belt o
5、nveyor . As the equipments are independent, they couldnt give comprehensive and intelligence judgments . Then, incorrect shutdown happens and great economic losses are caused . The safety and reliability of system Can be improved by comprehensive information, intelligence judge methods and centraliz
6、ed control, and the production efficiency would be improved .In this paper . all the causes and detection ways of belt-conveyor are simultaneously analyzed . The control system has is designed . Double speed sensors are used to detect belt slipping and tearing . Temperature sensors, coal level senso
7、rs, pulling to one side sensors and portrait tearing sensors are selected respectively by comparing the performance of sensors .Then? CPU 226 of S7-2OO family of PLC as the control core is used for its reliability and strong anti-jamming . The method . that high speed counter of PLC is used to colle
8、ct the frequency and synthesis analysis of fault, has improved the reliability and veracity of slipping detection of the system .In the software constnjction, module programmed design ethos is used . Main programmer and function subprograms are compiled . The lower Cost text display is used . It is
9、with good visual effect and is easy to be learned, improves the communication ability between machine and user .Finally, the communication system which is complemented by way of RS485 bus between PLC and chip microcomputer system is designed . Besides, the hardware circuit is designed, the communica
10、tion protocols and the software flow is worked out as well . At the same time, PLC, as the lower computer, communicates with the higher computer by Prefabs-DP? and the long-distance real . time monitor contiOliS achieved . The results indicate that the protection system can run steadily and reliably
11、 . All the indexes of performance satisfy the requirement of design .KEY WORDS : Belt conveyor, Programmable logical controller, Protection ofSystem, RS485目录第一章绪论1引言1研究皮带运输机综合保护系统的意义2皮带运输机综合保护系统的研究现状及发展趋势31. 3.1皮带运输机综合保护系统的研究现状31. 3. 2皮带运输机综合保护系统的发展趋势5本文的研究目标及主要内容6第二章 皮带运输机故障分析及检测8打滑故障分析及检测8皮带打滑原因及解
12、决方法82. 1.2打滑故障检测9跑偏故障分析及检测92. 2. 1皮带跑偏的解决方法102. 2.2调偏装置11跑偏故障检测15超温故障分析及检测152. 3. 1超温故障的原因及解决方法16故障检测方法17烟雾故障分析与检测18堆煤保护18撕裂故障分析及检测192. 6. 1撕裂故障原因及解决方法192. 6. 2撕裂检测21本章小结21第三章矿井皮带运输机综合保护系统的硬件设计23系统整体方案23PLC的工作原理与特点243. 2. 1 PLC 的结构24的工作原理283. 2.3 S7-226PLC 介绍31打滑保护设计333. 3. 1信号采集与处理333. 3.2打滑保护控制电路3
13、8跑偏保护设计383. 4.1跑偏传感器和急停传感器的选择39温度保护设计43烟雾保护设计45煤位保护设计46撕裂保护设计46声光报警电路473. 9. 1报警电路473. 9. 2二极管电路48皮带运输机供电电路49抗干扰设计50本章小结52第四章矿井皮带运输机综合保护系统软件设计53系统软件开发坏境53系统软件结构设计534. 2. 1系统软件设计原则53系统软件结构54监控主程序设计54功能模块子程序设计56计数器初始化子程序56中断子程序57通信子程序57监控定时器复位指令59显示界面59本章小结60第五章皮带运输机保护系统的通讯62通讯端口物理特性625. 1. 1RS-485 接 口标准625. 1. 2CPU226的9针串口引脚定义635. 1. 3CPU226 通讯方式63保护系统与急停传感器通讯功能的实现655. 2.1通讯方案的设计655. 2.2硬件电路设计675. 2.3软件程序设计705. 2. 4通讯协议设定70保护系统与上位机通讯功能的实现715. 3.1现场总线介绍715. 3. 2通讯方式确定765. 3. 3通讯功能的实现78本章小结79第六章系统调试81保护单元调试816. 1.1打滑保护调试816. 1.2超温保护调试826. 1.3堆煤保护调试83通讯单元的调试85显示单元的调试88本章小结89第七章研究结论90参考文献92致谢96
