基于RecurDyn的带式输送机打滑特性研究

发布时间：2018-06-06 01:48

本文选题：带式输送机 + 打滑　；参考：《太原理工大学》2015年硕士论文

【摘要】：打滑是带式输送机工作过程中不可回避的问题，打滑不仅加快输送带的磨损、诱发噪声、影响生产率，严重时还将导致失火引发重大事故。由于打滑对输送机在运行上的严重影响，对输送机打滑特性的研究已成为迫不及待的问题。目前国内外对这方面的研究是基于挠性体传动的欧拉式，即假设输送带是无弯曲剪力、没有质量及厚度、不可拉伸的纯柔性体，但由欧拉式计算出来的结果与现实之间差别很大，不能较好的描述输送机与滚筒的动力学关系及运动状态。因此，建立带式输送机的打滑模型，准确描述带式输送机与滚筒的力学关系及运动状态，研究输送机打滑特性具有重要的实用价值和理论意义。本论文的主要工作如下：（1）在对输送带打滑原因分析的基础上，针对现有欧拉式在输送机系统应用上的不足，综合考虑输送带的弯曲剪力，建立了输送带打滑模型。（2）对输送机系统进行简化后，结合某矿图纸在RecurDyn软件中建立了输送机虚拟样机。通过对虚拟样机进行仿真分析，发现仿真结果与带式输送机实际工作中的特性是相符合的；发现初始张紧力、围包角、摩擦系数参数越大，输送带系统越不容易发生打滑，这与文献上记录的相吻合。因此表明本文在虚拟环境中建立的输送机样机模型是合理的，是正确的。（3）通过分别在不同初始张紧力、围包角、摩擦系数下对传统打滑式及本文建立的打滑式计算，，计算结果表明：传统打滑式与仿真结果存在很大偏差，而本文建立的打滑模型与仿真结果基本一致。因此本文建立的输送机打滑模型是正确的，是更符合实际工况的。（4）利用Matlab软件对影响输送机打滑特性的因素进行数值分析，研究了输送带厚度、初始张紧力、驱动滚筒半径、输送带与驱动滚筒的摩擦系数、围包角对输送机打滑的影响，并针对输送机的打滑特性对各影响因素提出防滑安全措施。（5）结合清徐李家楼煤矿主斜井带式输送机打滑实际案例进一步验证本文建立打滑模型的准确性，并结合该矿的计算说明书分析打滑原因，提出防打滑措施。
[Abstract]:Skidding is an unavoidable problem in the working process of belt conveyors. Slip not only speeds up the wear and tear of conveyor belt, induces noise, affects productivity, but also leads to serious accidents caused by misfire. Because of the serious influence of skidding on the running of conveyer, the study of skid characteristics of conveyer has become an urgent problem. At present, the research on this aspect is based on the Euler type of flexible body transmission, which assumes that the conveyor belt is a pure flexible body with no bending shear force, no mass and thickness, and no stretch. However, the result calculated by Euler's formula is quite different from the reality, and it can not describe the dynamic relation and motion state of conveyor and drum. Therefore, it is of great practical value and theoretical significance to establish the sliding model of belt conveyor, to accurately describe the mechanical relationship between belt conveyor and roller and to study the sliding characteristics of belt conveyor. The main work of this thesis is as follows: 1) based on the analysis of the reasons of belt slip, aiming at the deficiency of the existing Euler type in the application of conveyor system, a belt slip model is established by considering the bending shear force of the conveyor belt synthetically. After simplifying the conveyer system, the virtual prototype of the conveyor is established in RecurDyn software combined with the drawing of a mine. Through the simulation analysis of the virtual prototype, it is found that the simulation results are consistent with the characteristics of the belt conveyor in actual work, and that the higher the parameters of initial tension, girth angle and friction coefficient, the less likely the belt system will slip. This coincides with what is recorded in the literature. It shows that the prototype model of conveyer established in this paper is reasonable and correct. 3) the traditional slip formula and the slip formula established in this paper are calculated under different initial tension, girth angle, friction coefficient, respectively. The results show that there is a great deviation between the traditional slip mode and the simulation results. The model is consistent with the simulation results. Therefore, the slip model of conveyer established in this paper is correct and more in line with the actual working conditions. Matlab software is used to analyze the factors affecting the slip characteristics of conveyor, and the influence of belt thickness, initial tension force, radius of driving drum, friction coefficient between conveyor belt and driving drum, circumference angle on the slip of conveyor is studied. According to the slip characteristics of conveyer, the paper puts forward the anti-slip safety measures. Combined with the actual case of belt conveyor of main inclined shaft in Qingxu Lijialou Coal Mine, the accuracy of the skid model is further verified, and the reason of skid is analyzed in combination with the calculation instruction of the mine, and the anti-skid measures are put forward.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.1

【参考文献】