带式输送机断带抓捕装置设计及其动态性能研究

发布时间：2018-03-27 23:14

本文选题：带式输送机　切入点：断带抓捕　出处：《中国矿业大学》2015年硕士论文

【摘要】：带式输送机是目前运输行业最主要的应用工具之一,由于其具有运量大、结构比较简单、需要的投入费用比较小以及维护较方便等优点,被广泛的应用于煤矿、码头以及港口等行业。近年来,随着带式输送机的生产效率逐渐提高,其上运送物料增多,输送机运行时间过长,输送带长期处于受高负载的状态,使得输送带发生断带的情况发生频率逐渐增大,发生事故会带来严重的人员的伤亡以及巨大的经济损失。因此,除了需要加大对带式输送机的安全性的重视外,还要设计一个配套的断带抓捕器来进行断带之后的保护。本文根据现有的带式输送机的工作状况,分析了以往的断带抓捕器的设计经验,针对对输送安全提出的保护要求,设计了一种新型的断带抓捕器。根据断带抓捕器的工作原理,设计其每一个部件的结构,通过其相互之间的配合关系,行程一整套的抓捕装置,并根据设计出来的结构完成三维模型的建立。分析整个断带抓捕器在工作时的受力状态,找出其中承受载荷比较大的重要的零件,通过ANSYS软件进行受力分析以及优化,检测该零件是否在安全范围之内,并在保证其安全的基础上进行优化,获得合理的结构尺寸。研究断带抓捕器的动态抓捕特性,通过分析处于静止和动态时断带抓捕器的受力状况,推导出在发生断带事故后断带抓捕器从平衡位置到达抓捕位置所需要的时间与其受到的影响因素。通过ADAMS软件进行输送带的仿真模拟,根据输送带的粘弹特性建立模型,并依据其实际工作时的状态对输送带模型进行施加载荷和约束,通过仿真计算得出其运动状态与实际工作状态进行对比。在已建立的输送带的模型上导入断带抓捕器的模型,定义其相互之间的接触关系等,通过软件的控制与计算,可以对带式输送机的断带过程以及断带抓捕器的动作抓捕过程进行仿真,并与理论情况相比较,验证了仿真的合理性。考虑到输送带的粘弹特性的存在,建立一种基于伏格特模型的输送带的动态模型,研究输送带在被抓捕后的振动状态。依据输送带的每一个模型单元的受力状态,将输送带被抓捕时的状态作为初始条件,求解出输送带的振动微分方程,得出其达到稳定状态的时间。
[Abstract]:Belt conveyor is one of the main tools of transportation industry application at present, because of its large volume, relatively simple structure, the advantages of the investment cost is relatively small and need more convenient maintenance, is widely used in mines, docks and ports and other industries. In recent years, with the increase of belt conveyor production efficiency. The transportation of materials increased, the conveyor belt conveyor running time is too long, long under high load condition, the belt conveyor broken belt the frequency increases, the accident will bring serious personnel casualties and huge economic losses. Therefore, in addition to the need to increase the safety of the belt conveyor's attention outside, but also the design of a complete break to break protection belt after belt catcher. According to the operation of the belt conveyor in the existing, analysis of the broken belt protector. According to the experience of the protection plan, transportation safety requirements, design a new type of broken belt protector. According to the working principle of broken belt protector, the structure design of every component, through cooperation between them, a stroke catching device, and according to the established three-dimensional model of structure design the analysis of the broken belt protector. The stress state at work, find out the load more important parts, force analysis and optimization by ANSYS software, the detection part is in a safe range, and in the foundation to ensure the safety of structure optimization, reasonable size study on the dynamic characteristics of the arrest. Broken belt protector, through the analysis of static and dynamic in broken belt catcher stress state is deduced in the broken zone after the accident off from the equilibrium position to capture belt protector Factors affecting the time and location to the conveyor belt. The simulation by ADAMS software, establish the model according to the viscoelastic properties of the conveyor belt, according to the actual working state of the conveyor belt model applied loads and constraints, compared the motion with the actual working condition by simulation in. Transport has been established with the model on the import of broken belt protector model, the definition of the contact between each other, through the calculation and control software, can be used to simulate the process of broken belt conveyor and the motion capture process of broken belt protector, and compared with the theory, the simulation results reasonable. Considering the viscoelastic properties of conveyor belt exist, establish a dynamic model of conveying Vogt model with based on the research of conveyor belt in the vibration condition is after the arrest. On the basis of delivery The stress state of each model unit is taken as the initial condition of the state when the conveyor belt is captured. The differential equation of the conveyor belt is solved, and the time to reach the stable state is obtained.

【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】：TD528.1

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