3000型沥青搅拌设备振动筛设计

发布时间：2018-05-11 11:30

本文选题：沥青搅拌设备 + 振动筛　；参考：《长安大学》2014年硕士论文

【摘要】：现今我国使用的沥青路面施工机械设备中占最主要之一的是沥青混合料搅拌设备，它在路面施工机械设备中有着无法替代的地位。沥青混合料搅拌设备可以分为间歇式以及连续式两种，沥青搅拌设备中的间歇式类型由于具有电子称量系统的“二次计量和搭配”以及振动筛的“二次筛分”这一优点，使得沥青混合料得到了更好的级配保证，因而，这种间歇式的沥青搅拌设备在我国高速公路等重点工程建设中被大量采用。沥青搅拌设备中的关键部分是振动筛，它的生产率高低以及筛分效率的高低对振动筛的生产质量的影响尤为重要。目前，较为常见的沥青搅拌筛分设备是多层直线振动筛，但国内外对多层直线振动筛的研究相对较少。随着路面施工技术的飞速发展，对沥青骨料级配的要求也越趋严格，对振动筛的生产质量有着更高的需要和标准。因而，本论文旨在通过对3000型沥青搅拌设备振动筛的合理设计，使得多层直线振动筛达到较高的生产质量和良好的可靠性。本文的研究对象是3000型沥青搅拌设备中的振动筛，以此类型的振动筛为对象主要进行了如下的设计和探讨：根据试验和调研结果，该3000型沥青搅拌设备需要满足生产率为240t/h，筛分效率要达到85%以上，以此为依据，，确定多层直线振动筛的相关工作参数。其主要包括筛网层数和孔径、筛网外形尺寸、筛面倾角、振动方向角、振幅、振动频率、激振力以及振动强度等，在依据直线振动筛的工作机理的基础上，计算出了相关的动力学参数。依据设计好的机械图纸，首先建立起三维的振动筛实体模型，然后再利用ADAMS对三维的实体模型进行运动学仿真分析。分析了振动筛的运动规律，从仿真结果可知，此振动筛的设计基本符合要求，但其振动幅值略小于设计的振动幅值。借助有限元分析软件ANSYS建立振动筛三维虚拟模型，对其加载激振力和添加约束，进行静力和动力学仿真分析，根据仿真结果分析整体强度和相关参数的设计是否满足可靠性要求，是否与试验结果相吻合。然后再对其在正常运行中所出现的问题进行预测和分析，以使该多层直线振动筛达到较高的生产质量和良好的可靠性。本论文先运用理论分析对3000型沥青搅拌设备直线振动筛进行了设计，再通过仿真分析验证其设计是否合理，为直线振动筛的设计与运用提供了一定的参考。论文的研究成果，有助于振动筛在3000型沥青搅拌设备中的合理设计和使用。
[Abstract]:The main part of asphalt pavement construction machinery used in our country is the asphalt mixture stirring equipment , which has the irreplaceable position in pavement construction machinery equipment . The key part of asphalt mixing equipment is a multi - layer linear vibrating screen . The key part of asphalt mixing equipment is a multi - layer linear vibrating screen .

The research object of this paper is a vibrating screen in 3000 asphalt mixing equipment , which is designed and discussed as follows :

According to the experiment and research results , the 3000 asphalt mixing equipment needs to meet the productivity of 240 t / h , the screening efficiency is above 85 % , and the relevant working parameters of the multi - layer linear vibrating screen are determined according to the test and research results . The main parameters include the number of screens and the pore size , the screen size , the screen inclination , the vibration direction angle , the amplitude , the vibration frequency , the excitation force and the vibration intensity , etc . The relevant dynamic parameters are calculated on the basis of the working mechanism of the linear vibrating screen .

According to the designed mechanical drawing , the solid model of the three - dimensional vibrating screen is first established , then the kinematic simulation of the three - dimensional solid model is analyzed by ADAMS . The motion law of the vibrating screen is analyzed . From the simulation results , the design of the vibrating screen is basically satisfactory , but the amplitude of the vibration amplitude is slightly smaller than the vibration amplitude of the design .

The three - dimensional virtual model of vibrating screen is established by means of finite element analysis software ANSYS . The dynamic simulation and static and dynamic simulation are carried out on the basis of the simulation results . Whether the design of the integral strength and relevant parameters meets the reliability requirements , is consistent with the test results . Then , the problems in the normal operation are predicted and analyzed , so that the multi - layer linear vibrating screen can achieve higher production quality and good reliability .

The paper designs the linear vibrating screen of 3000 asphalt mixing equipment by using the theory analysis , and then verifies whether the design is reasonable by simulation analysis , and provides some reference for the design and application of the linear vibrating screen . The research results of this paper are helpful to the rational design and use of the vibrating screen in the 3000 - type asphalt stirring equipment .

【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U415.52

【参考文献】