高空作业车连杆变幅机构优化设计
发布时间：2018-10-21 08:18
【摘要】：连杆变幅机构在高空作业车上的应用,形式新颖,不仅可增加作业幅度,还可改善变幅油缸工作条件,降低变幅油缸的最大受力和降低变幅油缸液压冲击。因此对连杆变幅机构进行优化分析具有重要的意义。 本文以大连理工大学与某公司合作研发的26米高空作业车实际项目为背景,基于MATLAB数值计算能力和遗传算法优化工具箱技术,结合虚拟样机技术对高空作业车连杆变幅机构的铰点位置进行分析研究。主要完成以下内容： (1)分析高空作业车连杆变幅机构的工作原理,初步选取变幅机构铰点位置,建立变幅机构的数学模型并编写了数学模型的计算程序。根据高空作业车的不限幅作业工况,分析变幅油缸和变幅机构铰点的受力特点。根据受力特点确定了变幅油缸受力最大时对应的变幅机构最恶劣工况。 (2)以连杆变幅机构铰点位置坐标为设计变量,以降低变幅油缸受力最大值为目标函数,在变幅油缸受力最恶劣工况下建立优化模型,结合MATLAB遗传算法优化工具箱技术和遗传算法容易获取全局最优解的特点,在最恶劣工况下对优化模型进行优化分析。 (3)基于Pro/E三维建模能力和ADAMS动态仿真技术,建立连杆变幅机构的虚拟样机模型。对比分析虚拟样机模型的动力学仿真结果与优化模型的数值计算结果,验证初选铰点位置的合理性及数学模型的正确性。
[Abstract]:The application of connecting rod luffing mechanism in high altitude working vehicle is novel. It can not only increase the working amplitude, but also improve the working conditions of the variable amplitude cylinder, reduce the maximum force of the variable amplitude cylinder and reduce the hydraulic shock of the variable amplitude cylinder. Therefore, it is of great significance to optimize the linkage luffing mechanism. Based on the actual project of 26m aerial vehicle developed by Dalian University of Technology and a company, this paper is based on the MATLAB numerical computing ability and genetic algorithm optimization toolbox technology. Combined with virtual prototyping technology, the hinge position of connecting rod luffing mechanism of aerial working vehicle is analyzed and studied. The main contents are as follows: (1) analyzing the working principle of the linkage luffing mechanism of the aerial working car, selecting the hinge position of the luffing mechanism, establishing the mathematical model of the luffing mechanism and compiling the calculation program of the mathematical model. According to the operating condition of the aerial working vehicle, the stress characteristics of the cylinder and the hinge of the luffing mechanism are analyzed. According to the stress characteristics, the worst working conditions of the luffing mechanism corresponding to the maximum force are determined. (2) taking the position coordinate of the hinge point of the linkage luffing mechanism as the design variable, and taking the maximum force of the variable amplitude cylinder as the objective function, The optimization model is established under the worst load condition of the variable amplitude cylinder, and combined with the MATLAB genetic algorithm optimization toolbox technology and genetic algorithm, it is easy to obtain the global optimal solution. The optimization model is optimized under the worst working conditions. (3) based on the 3D modeling ability of Pro/E and the ADAMS dynamic simulation technology, the virtual prototype model of the linkage luffing mechanism is established. The dynamic simulation results of the virtual prototype model and the numerical results of the optimization model are compared to verify the rationality of the primary hinge location and the correctness of the mathematical model.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH21
本文编号：2284523
[Abstract]:The application of connecting rod luffing mechanism in high altitude working vehicle is novel. It can not only increase the working amplitude, but also improve the working conditions of the variable amplitude cylinder, reduce the maximum force of the variable amplitude cylinder and reduce the hydraulic shock of the variable amplitude cylinder. Therefore, it is of great significance to optimize the linkage luffing mechanism. Based on the actual project of 26m aerial vehicle developed by Dalian University of Technology and a company, this paper is based on the MATLAB numerical computing ability and genetic algorithm optimization toolbox technology. Combined with virtual prototyping technology, the hinge position of connecting rod luffing mechanism of aerial working vehicle is analyzed and studied. The main contents are as follows: (1) analyzing the working principle of the linkage luffing mechanism of the aerial working car, selecting the hinge position of the luffing mechanism, establishing the mathematical model of the luffing mechanism and compiling the calculation program of the mathematical model. According to the operating condition of the aerial working vehicle, the stress characteristics of the cylinder and the hinge of the luffing mechanism are analyzed. According to the stress characteristics, the worst working conditions of the luffing mechanism corresponding to the maximum force are determined. (2) taking the position coordinate of the hinge point of the linkage luffing mechanism as the design variable, and taking the maximum force of the variable amplitude cylinder as the objective function, The optimization model is established under the worst load condition of the variable amplitude cylinder, and combined with the MATLAB genetic algorithm optimization toolbox technology and genetic algorithm, it is easy to obtain the global optimal solution. The optimization model is optimized under the worst working conditions. (3) based on the 3D modeling ability of Pro/E and the ADAMS dynamic simulation technology, the virtual prototype model of the linkage luffing mechanism is established. The dynamic simulation results of the virtual prototype model and the numerical results of the optimization model are compared to verify the rationality of the primary hinge location and the correctness of the mathematical model.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH21
【引证文献】
相关硕士学位论文 前1条
1 刘仁华;多功能破拆消防车臂架动力学分析[D];大连理工大学;2013年
，本文编号：2284523
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