基于虚拟样机技术的火电厂带式输送机动态特性研究

发布时间：2018-04-20 14:22

本文选题：输送机 + 虚拟样机　；参考：《华北电力大学》2012年硕士论文

【摘要】：带式输送机是散装物料重要的运输设备之一,其优点主要有：输送能力强；输送范围广；装卸方便；安全系数大；距离输送长；动力及维修费用低等一系列优点。近年来,长距离、高带速、大运量带式输送机已经成为输送机发展的主流,与此同时输送机工作状态下系统的稳定性显得尤为重要。传统的稳定性研究主要集中在非稳定状况、动张力传播、纵向振动及横向振动等方面,未从整个系统的动态特性方面进行研究,本文则是侧重于从系统的观点出发研究分析其动态特性,从而为输送机系统的稳定运行提出合理建议。本文将虚拟样机技术引入到带式输送机的设计中,介绍了虚拟样机技术的理论基础、应用方式及前景。以某火电厂带式输送机为参考,在合理简化其参数的基础之上,运用RecurDyn多体动力学仿真软件,建立了虚拟环境下满足验证要求的带式输送机模型。着重分析了一下几方面的内容：在使用Harrision曲线驱动带式输送机情况下,比较分析启动及正常运行阶段带式输送机张力的变化情况,得出最大张力发生的位置；得到传统启动曲线在何种工况下最实用及具体应用场合；重力张紧装置对输送机系统的作用及在动力学方面的反应。分析得出的结果对于输送机的设计制造和使用维护中具有重要的意义。
[Abstract]:Belt conveyor is one of the important transportation equipment for bulk materials. Its advantages include: strong transportation capacity, wide range of transportation, convenient handling, large safety factor, long distance transportation, low power and maintenance costs, and so on. In recent years, long distance, high belt speed, large volume belt conveyor has become the mainstream of the development of the conveyor, at the same time, the stability of the system is particularly important in the working state of the conveyor. The traditional stability studies mainly focus on the unstable conditions, dynamic tension propagation, longitudinal vibration and lateral vibration, etc., but not from the dynamic characteristics of the whole system. This paper focuses on the study and analysis of its dynamic characteristics from the point of view of the system, so as to put forward reasonable suggestions for the stable operation of the conveyor system. In this paper, the virtual prototype technology is introduced into the design of belt conveyor, and the theoretical basis, application mode and prospect of virtual prototype technology are introduced. On the basis of reasonably simplifying the parameters of belt conveyor in a thermal power plant, a belt conveyor model satisfying the verification requirements in virtual environment is established by using RecurDyn multi-body dynamics simulation software. The following aspects are emphatically analyzed: in the case of belt conveyor driven by Harrision curve, the change of belt conveyor tension in start-up and normal operation stage is compared and analyzed, and the position where the maximum tension occurs is obtained. The most practical and practical application of the traditional starting curve is obtained, and the effect of the gravity tensioning device on the conveyor system and its dynamic response are obtained. The results are of great significance to the design, manufacture and maintenance of conveyors.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH222

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