基于“三化”综合设计法的自同步直线振动筛设计

发布时间：2018-11-24 17:24

【摘要】：自同步直线振动筛在我国工业生产中应用广泛,主要应用于采矿、建筑物料筛分等行业。其较高的振动频率、稳定的振动幅度,使物料筛分变得容易而高效。当前振动筛的应用领域愈来愈多,振动筛的结构强度也越来越受到重视。自同步直线振动筛在工作过程中,承担筛分工作的主要部分是筛箱。但由于工作环境、承载重量的原因,筛箱侧板容易发生断裂的情况。在对振动筛进行设计时,传统的设计方法只是根据承载物料的大小,依据经验进行的设计,没有充分考虑振动筛的筛箱在长时间、高强度的工作环境下的结构强度问题,很容易导致筛箱结构发生破坏。本文是运用“三化综合设计法”对ZKB2460型自同步直线振动筛进行的研究。在对ZKB2460型自同步直线振动筛的筛箱易出现裂纹的问题进行分析时,主要是运用的“三化综合设计法”中的动态优化设计进行研究的,并辅助有可视化和智能化设计。论文首先是对振动筛参数计算,并用Solidworks建模软件对它的重要零部件进行三维建模,再把振动筛的各个零部件装配起来。然后运用ANSYS Workbench有限元分析软件对振动筛的筛箱容易出现断裂的情况进行模态分析和谐响应分析。通过模态分析判断出筛体存在共振的危险,对筛箱侧板和挡板等部位重新进行了加厚,再重新对筛箱部分进行了模态分析,并寻找出厚度增加量的一个最优值。从谐响应分析中得出筛箱结构的薄弱区域的动应力值远小于其许用应力值,满足工作要求,设计合理。最后对振动筛进行了自动定时的设计。
[Abstract]:Self-synchronous linear vibrating screen is widely used in China's industrial production, mainly in mining, construction materials screening and other industries. Its high vibration frequency, stable vibration amplitude, material screening becomes easy and efficient. At present, the application field of vibrating screen is more and more, and the structural strength of vibrating screen is paid more and more attention. In the working process of self-synchronous linear vibrating screen, the main part of screening work is screen box. But because of working environment and carrying weight, the side plate of screen box is easy to break. In the design of vibrating screen, the traditional design method is only based on the size of the bearing material and the design based on experience, without fully considering the structural strength of the vibrating screen box in the long time and high strength working environment. It is easy to cause damage to the structure of the screen box. In this paper, the ZKB2460 self-synchronous linear vibrating screen is studied by using the three chemical synthesis design method. In the analysis of the crack in the screen box of ZKB2460 type self-synchronous linear vibrating screen, the dynamic optimization design in the "three chemical synthesis design method" is mainly studied, and the visual and intelligent design is auxiliary. In this paper, the parameters of the vibrating screen are calculated, and its important parts are modeled by Solidworks software, and then the components of the vibrating screen are assembled. Then the modal analysis and harmonic response analysis of the vibration screen box are carried out by using ANSYS Workbench finite element analysis software. According to modal analysis, the risk of resonance in sieve body is determined, and the side plate and baffle of screen box are thickened again, then modal analysis of the part of screen box is carried out again, and an optimum value of thickness increase is found out. From the harmonic response analysis, it is concluded that the dynamic stress value of the weak area of the screen box structure is far less than its allowable stress value, which meets the working requirements and is reasonably designed. Finally, the automatic timing design of the vibrating screen is carried out.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD452

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