乳化炸药输送管的自动输送装置及系统分析

发布时间：2018-02-15 02:56

本文关键词： 送管装置推送机构夹紧机构动态特性　出处：《安徽工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：在矿山作业中,爆破环节是必不可少的作业工序。目前,国内在地下采矿爆破过程中大部分采用人工或者简易的装药器装药,都有效率低下、装药耦合性差、劳动强度大、安全条件差等问题。随着越来越多的矿山开采从露天开采转向地下开采,受到工作空间等多重限制,装药效果和工人安全等问题突出;所以,地下自动装药将取代人工方式装药。因此一台运行稳定、适用的送管装置是地下自动装药所必需的。本文研究的主要内容如下:首先,简单介绍乳化炸药地下现场混装车发展状况,对国内外车用送管装置的发展及研究现状进行归纳总结。在分析总结以往设计的基础上确定送管装置的整体设计方案,主要包括送管方式、传动机构,夹紧机构和检测方案。其次,对送管装置推送和夹持两个重要环节进行重新设计研究。在确定采用摩擦轮式的送管装置后,对送管轮的夹持形状和表面防滑结构进行设计,并利用专业建模软件SolidWorks建立装置的三维模型。对于夹持机构将采用液控单向阀、电磁换向阀和电接点压力表共同作用来实现自动控制压力,并利用AMESim软件对该液压回路进行仿真,验证能否只需要很小的挤压量就可以达到且稳定在所需的压力范围内。最后,对送管传动系统的工作原理及各组成部分进行了详细的分析介绍,并建立了比例阀控液压马达速度系统的数学模型。对系统的动态响应特性进行描述,并绘制了开环系统的Bode图;针对系统不稳定问题,提出利用PID控制策略。与此同时,借助MATLAB/Simulink软件建立电磁比例阀控液压马达系统的完整仿真模型。仿真结果表明,本文所采用的控制方法可以有效实现装药退管过程中速度的稳定调控。
[Abstract]:In mine operation, blasting is an essential working procedure. At present, most of the domestic underground mining blasting process used artificial or simple charge device charge, the efficiency is low, the charge coupling is poor, the labor intensity is large. Problems such as poor safety conditions. As more and more mines move from open-pit mining to underground mining, they are subject to multiple restrictions such as workspace restrictions, and the effects of charge and worker safety are prominent; therefore, Underground automatic charge will replace manual charge. Therefore, a stable and suitable tube feeding device is necessary for underground automatic charge. The main contents of this paper are as follows: first, This paper briefly introduces the development situation of underground mixed loading vehicle of emulsion explosive, summarizes the development and research status of domestic and foreign vehicle pipe feeding device, and determines the overall design scheme of pipe feeding device on the basis of analyzing and summing up the previous design. It mainly includes pipe feeding mode, transmission mechanism, clamping mechanism and testing scheme. Secondly, two important links of pipe feeding device, push and clamp, are redesigned and studied. The clamping shape and surface anti-skid structure of the pipe feeding wheel are designed, and the 3D model of the device is established by using the professional modeling software SolidWorks. For the clamping mechanism, the hydraulic control one-way valve will be used. The electromagnetic reversing valve and the electric contact pressure gauge act together to realize the automatic control of the pressure, and use AMESim software to simulate the hydraulic circuit to verify whether it can be achieved and stabilized within the required pressure range with only a very small amount of extrusion. The working principle and components of pipe feeding drive system are analyzed and introduced in detail, and the mathematical model of proportional valve control hydraulic motor speed system is established. The dynamic response characteristics of the system are described. The Bode diagram of the open-loop system is drawn, and the PID control strategy is proposed for the instability of the system. At the same time, the complete simulation model of the electro-magnetic proportional valve controlled hydraulic motor system is established with the help of MATLAB/Simulink software. The simulation results show that, The control method adopted in this paper can effectively realize the stable control of the speed in the process of charging back tube.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD235.44

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