多绳提升载荷及张力平衡无线监测系统研究

发布时间：2018-06-19 06:25

本文选题：提升载荷 + 张力平衡　；参考：《中国矿业大学》2015年硕士论文

【摘要】：超载、钢丝绳张力不平衡是影响摩擦提升安全运行的两个重要因素,本文以麻家梁煤矿主井2#提升系统为背景,开展了提升载荷及张力平衡无线监测研究,对提高多绳摩擦提升安全性、提高煤矿生产效益具有的重要的理论和实际意义。首先,根据装载过程的动力学特征,建立了箕斗装载过程的动态数学模型,对模型进行变换推导得到了下落煤流量和系统参数的关系式,从而把动态称重问题转化为一个系统参数辨识问题来解决;推导了参数估计公式,采用渐消记忆递推最小二乘算法进行了称重过程的仿真实验和实际验证,实验表明加入辨识算法后,系统的测重精度有所提高,调节时间减小,可满足现场快速测重、判断是否超载的要求。针对多绳提升张力平衡问题,分析了钢丝绳张力不平衡原因,介绍了平衡装置工作原理,分析了两种工作状态下活塞杆位置变化与应钢丝绳张力的关系,指出活塞杆位置监测的必要性。其次,构建了以单片机为下位机、工控机为上位机、点对点通信的无线监测系统,根据煤矿防爆要求,设计了相应的硬件和防爆箱;在软件设计中,给出了下位机程序设计流程图,编写了基于AVR单片机的采集发射程序,确定了上位机程序功能结构,并采用Lab VIEW分模块编写了上位机程序,实现了软件的图形化和模块化。最后,所研究的监测系统在在麻家梁矿进行了工业性实验,实验表明该系统实现了多绳提升的载荷和张力平衡的实时监测,对提升机装载过载、二次装载、卸载不彻底、钢丝绳张力不平衡、平衡油缸活塞杆到达极限位置、卡罐等故障具有识别和预警。
[Abstract]:Overloading and tension imbalance of wire rope are two important factors that affect the safe operation of friction hoisting. Based on the hoisting system of Majialiang coal mine in 2#, the research on wireless monitoring of lifting load and tension balance is carried out in this paper. It is of great theoretical and practical significance to improve the safety of multi-rope friction hoisting and to improve the efficiency of coal mine production. Firstly, according to the dynamic characteristics of the loading process, the dynamic mathematical model of the skip loading process is established, and the relationship between the falling coal flow rate and the system parameters is derived by the transformation of the model. Thus, the dynamic weighing problem is transformed into a system parameter identification problem, the parameter estimation formula is derived, and the simulation experiment and practical verification of the weighing process are carried out by using the fading memory recursive least square algorithm. The experimental results show that the precision of weight measurement is improved and the adjusting time is reduced after adding the identification algorithm, which can meet the requirements of quick weight measurement on the spot and whether the system is overloaded or not. In view of the tension balance problem of multi-rope hoisting, the causes of tension imbalance of wire rope are analyzed, the working principle of balancing device is introduced, and the relationship between the change of piston rod position and the tension of steel rope under two working conditions is analyzed. The necessity of piston rod position monitoring is pointed out. Secondly, a wireless monitoring system with single-chip microcomputer as lower computer, industrial control computer as upper computer and point-to-point communication is constructed. According to the requirements of coal mine explosion-proof, the corresponding hardware and explosion-proof box are designed. The program flow chart of the lower computer is given, the acquisition and launching program based on AVR single chip computer is compiled, the function structure of the upper computer program is determined, and the upper computer program is compiled by using LabVIEW sub-module, which realizes the graphics and modularization of the software. Finally, the industrial experiment of the monitoring system in Majialiang Mine shows that the system can realize the real-time monitoring of load and tension balance of multi-rope hoisting, and the loading overload, secondary loading and unloading of hoist are not complete. The tension of wire rope is unbalanced, the piston rod of balancing cylinder reaches the limit position, and the faults such as jam tank can be identified and warned.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD538

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