转子式混凝土湿喷机送料装置的设计与研究

发布时间：2019-01-10 21:25

【摘要】：介绍了国内外混凝土湿喷机的发展历程，探究了湿喷机送料装置研究的意义，对转子式混凝土湿喷机和湿喷机送料装置的工作原理作了重点介绍，分析了当前湿喷机在实际工作中存在着物料不能有效利用的缺点。本文利用现代设计理论和方法，对送料装置的螺旋总长、螺旋叶片厚度、螺旋外径、倾斜角度、螺旋叶片螺距、螺旋轴外径、螺旋轴内径进行优化，并针对某厂家某型号的混凝土湿喷机的送料装置展开优化设计和研究。为寻求物料在输送过程中的运动特征和受力特征，对转子式混凝土湿喷机螺旋送料装置的工作原理做了详细的分析，了解了物料的运动状态，总结出物料与送料装置螺旋轴轴心的距离和物料运动速度之间的关系，找到了保证送料装置按要求输送物料需满足的条件。通过了解优化设计思想和建模原则，建立了关于湿喷机送料装置的双目标多约束的数学模型。利用理想点求解思想和MATLAB软件对双目标数学模型进行求解，结合送料装置参数优先系列标准对求解结果进行圆整。对比优化前后送料装置的输送效率和整机重量，证明了此优化方案的可行性。利用PRO/E5.0对送料装置螺旋体进行三维建模，并将其导入ANSYS中进行有限元力学分析。观察螺旋体的应力云图和位移云图知，，优化后的螺旋体符合材料要求。介绍了JPS5I-L转子式混凝土喷射机组的操作方法和转矩测试系统，利用应变片转矩传感器完成了螺旋轴扭矩的测量，实验结果表明，送料装置优化方案可以实现设计目的。
[Abstract]:This paper introduces the development course of the wet spraying machine for concrete at home and abroad, probes into the significance of the research on the feeding device of the wet jet machine, and emphatically introduces the working principle of the rotary wet jet machine and the feeding device of the wet jet machine. This paper analyzes the shortcoming of the wet jet machine which can't be used effectively in the actual work. In this paper, the helical total length, thickness of helical blade, helical outer diameter, inclined angle, pitch of helical blade, outer diameter of helical shaft and inner diameter of helical shaft are optimized by using modern design theory and method. The optimal design and research on the feeding device of a certain type of wet concrete spraying machine are also carried out. In order to find out the movement and force characteristics of the material in the process of conveying, the working principle of the screw feeding device of the rotor type wet concrete sprayer is analyzed in detail, and the moving state of the material is understood. The relationship between the distance between the material and the axis of the helical shaft and the moving speed of the material is summarized, and the conditions to ensure that the material is transported according to the requirements of the feeding device are found. Through understanding the optimal design idea and modeling principle, a mathematical model of dual-objective and multi-constraint for the feeding device of wet jet machine is established. The ideal point solution idea and MATLAB software are used to solve the two-objective mathematical model, and the results are rounded by combining the feeding device parameter priority series standard. The feasibility of the optimization scheme is proved by comparing the conveying efficiency and the weight of the whole machine before and after the optimization. PRO/E5.0 was used to model the helix of feeding device, and it was introduced into ANSYS for finite element mechanical analysis. The stress cloud map and displacement cloud map of the helix are observed. The optimized spirals meet the requirements of materials. The operating method and torque testing system of JPS5I-L rotor-type concrete sprayer are introduced. The torque of spiral shaft is measured by strain gauge torque sensor. The experimental results show that the optimization scheme of feeding device can achieve the purpose of design.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU643

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