【作者】 刘长福；

【导师】 容幸福；

【作者基本信息】 太原理工大学 ， 机械制造及其自动化， 2012， 硕士

【摘要】 从一个破碎过程来说,破碎机破碎方式主要分为粗碎、中碎、细碎、磨矿等几种方式。颚式破碎机是主要的粗碎破碎机。颚式破碎机破碎方式主要是靠挤压破碎物料,因而破碎机的机架尺寸以及破碎腔的几何形状对破碎机的性能有决定性影响。本文以单颗粒破碎且单颗粒物料在破碎腔内经五次破碎从排料口排出为假设条件,在确定复摆颚式破碎机的工作参数后得到基本尺寸的基础上,以复摆颚式破碎机整机实体测绘模型为研究对象,在完成自顶向下(骨架设计)的整机参数化模型基础上,以单颗粒五次破碎的推导计算为依据,对整机参数化模型进行了重新再设计。针对此模型进行了运动学和动力学分析研究及优化,实现了复摆颚式破碎机的真正意义上的参数化设计,得到了运动学和动力学特性,对实际的设计生产工作起到指导意义。主要研究工作有以下几部分：1.用三维软件Pro/E在实体测绘模型基础上完成了整机的实体参数化建模工作。应用Pro/E的自顶向下设计(骨架设计)功能,实现了整机模型的参数传递、尺寸自动更改、模型的自动生成。基于单颗粒物料破碎理论得到的腔型尺寸更改复摆颚式破碎机的尺寸,建立了一个单颗粒破碎理论的破碎机仿真及优化的整机模型。2.对复摆颚式破碎机的整机模型进行了运动学仿真研究,对动颚齿面上的点进行了运动特性分析,基于动颚中上部水平行程特性小的想法,确定了动颚板上水平位移最小的位置和悬挂高度的合理选择。3.通过对主要工作参数的敏感度分析,确定了优化分析的目标函数,并进一步以曲柄长度最短和传动角最大为目标进行了多目标优化研究,以曲柄长度最小为目标进行了单目标优化,分别得到了机构尺寸优化的模型,为动力学研究奠定了基础。4.在此基础上,将复摆颚式破碎机的参数化模型通过Pro/E和ANSYS的接口导入到ANSYS。5.建立动颚和机架的受力模型,基于ANSYS进行静力学分析。6.为了寻求机构的固有频率,了解结构的振动特性,进行了动颚和机架的模态分析。7.由于复摆颚式破碎机的动颚在破碎过程中主要承受的是冲击载荷的作用,所以进行了其瞬态动力学分析,得到了动颚的动力特性。本论文所做工作实现了复摆颚式破碎机的运动仿真与优化设计,为实际生产工作提供了有效的理论依据,对于推动单颗粒物料破碎理论下的复摆颚式破碎机的定型和生产具有十分重要的意义。更多还原

【Abstract】 From a broken process point of view, crusher divided into coarse, crushing, grinding, broken in several ways. The jaw crusher is mainly coarse crusher.Jaw crusher is broken by the main means extrusion material, so the frame size and broken crusher cavity of the geometry of the performance of the crusher have a decisive influence.Based on the single particle breaking and single particle materials in crushing cavity classic five broken from discharging from mouth to assume conditions, in determining the pendulum jaw crusher work parameters to get basic size after, on the basis of pendulum in the jaw crusher entity surveying and mapping model as the research object, in complete top-down (skeleton design) the parametric model based on the single grain five times the theoretical calculation of broken on the basis of the parametric model to design. According to this model the kinematics and dynamics analysis and optimization analysis, realize the pendulum jaw crusher on the true meaning of the parametric design, obtained the kinematic and dynamic characteristics of actual design production work have significance. The main research work has the following several parts: 1. With3D software Pro/E of surveying and mapping in the entity model based on completed the entity of parameterized modeling work. Application Pro/E of top-down design (skeleton design) function, achieve the machine parameters of the model transfer, size automatically change of the model, automatic generation.2. The pendulum of jaw crusher model of the kinematics simulation research, to move the jaw tooth surfaces at the motion characteristics analysis, based on the dynamic jaw level characteristics of small trip idea, determine the dynamic jaw plate on the position of the minimum displacement levels and hang the reasonable selection of height.3. Through the main parameters of sensitivity analysis, the optimization analysis to determine the objective function, and further to crank shortest length and transmission Angle on the objective of maximizing the multi-objective optimization study to crank length on the target of minimizing the single objective optimization are obtained in institutions size optimization of model, which establishes the foundation for dynamics.4. On this basis, the pendulum will jaw crusher parameterization models through the Pro/E and ANSYS interface imported into the AN SYS.5. Build dynamic jaws and the stress of the frame model, based on ANSYS static analysis of learning.6. In order to seek the inherent agency the natural frequency of the organization, and to learn the vibration of the structure characteristics, the dynamic jaws and frame of modal analysis.7. Because pendulum jaw crusher dynamic jaw broken in the main process of the bear is the role of the impact load, so the its transient dynamic analysis, the dynamic jaw got of the dynamic properties.This paper has realized the pendulum jaw crusher movement simulation and optimization design, for practical production work to provide effective theory basis for promoting single grain materials under the theory of the pendulum broken jaw crusher finalize the design and production has the very vital significance.更多还原