伸缩臂叉装车工作装置动力学特性研究及优化设计

发布时间：2018-03-07 23:00

本文选题：伸缩臂叉装车　切入点：工作装置　出处：《中南大学》2011年硕士论文　论文类型：学位论文

【摘要】：伸缩臂叉装车是传统叉车、轮式装载机、高空作业平台和小型汽车起重机有机结合而形成的一类新兴产品,并逐步成为农业、建筑、厂房建设等领域不可或缺的小型工程机械。它凭借工作装置完成物料的装卸、搬运和举升,因此伸缩臂叉装车工作装置的结构和性能参数直接影响整机作业性能。本文以SWTH3514伸缩臂叉装车工作装置设计为例,应用矢量方程解析法和牛顿-欧拉法建立伸缩臂叉装车工作装置多刚体运动学和动力学数学模型。利用计算机仿真技术,在MATLAB-Simulink环境下,建立举升作业工况下伸缩臂叉装车工作装置的多刚体动力学仿真模型,计算得到不同负载作用下工作装置的动力学特性。在保证叉装车工作装置的举升作业能力和卸料角一定的条件下,分别建立伸缩臂叉装车工作装置的变幅机构、六连杆机构以及平移性能的数学模型,采用遗传算法多目标优化方法,运用MATLAB优化工具箱对数学模型进行求解,并对比分析优化前后工作装置的主要性能参数和动力学特性。以SWTH3514型伸缩臂叉装车为实验平台进行相关实验研究,验证所建伸缩臂叉工作装置动力学模型的正确性、仿真研究的可行性、优化设计的有效性。
[Abstract]:Telescopic arm fork loading is a kind of new product which is formed by the organic combination of traditional forklift, wheeled loader, aerial working platform and small truck crane, and has gradually become agriculture and architecture. The construction of factory building and other fields is indispensable for small-scale construction machinery, which depends on the working device to complete the loading, unloading, handling and lifting of materials, so the structure and performance parameters of the working device of the telescopic arm fork loading vehicle have a direct impact on the performance of the whole machine. In this paper, taking the design of SWTH3514 telescopic arm fork loading device as an example, using vector equation analysis method and Newton-Euler method, a mathematical model of multi-rigid body kinematics and dynamics of the working device of telescopic arm fork loading vehicle is established, and the computer simulation technology is used. In the MATLAB-Simulink environment, the dynamic simulation model of multi-rigid body is established for the working device of telescopic arm fork loading under lifting operation condition. The dynamic characteristics of the working device under different loads are calculated. Under the condition of ensuring the lifting ability and unloading angle of the fork loading working device, the amplitude changing mechanism of the telescopic arm fork loading working device is established respectively. The mathematical model of the six-bar linkage mechanism and the translation performance is solved by using the genetic algorithm multi-objective optimization method and the MATLAB optimization toolbox. The main performance parameters and dynamic characteristics of the working device before and after the optimization are compared and analyzed. The dynamic model of the telescopic arm fork working device is verified by using SWTH3514 type telescopic arm fork loading as the experimental platform. The feasibility of simulation research and the effectiveness of optimization design.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH242

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