电牵引单轨吊驱动系统动力学特性研究

发布时间：2018-03-13 02:10

本文选题：单轨吊　切入点：优化设计　出处：《中国矿业大学》2016年硕士论文　论文类型：学位论文

【摘要】：单轨吊是煤矿辅助运输的关键装备,而驱动系统是单轨吊的主要工作部件。现有单轨吊由电机驱动的较少,故研究电牵引单轨吊驱动系统动力学特性,可以填补单轨吊电机驱动研究空白,对提高电牵引单轨吊驱动特性,实现井下辅助运输的安全高效发展具有重要意义。本论文以电牵引单轨吊的驱动系统为研究对象,基于优化设计理论、非线性有限元分析、轨道车辆动力学对电牵引单轨吊驱动系统的动力学特性进行了研究。基于优化设计基本理论,适当简化电牵引单轨吊驱动系统的齿轮传动系统,并使用MATLAB中的Fmincon函数对其进行优化设计,利用ANSYS/Workbench的Modal模块和Transient模块,对优化前后的传动系统进行有限元分析,得到优化前后传动系统的模态频率和振型以及在啮合过程中的应力分布。结果表明优化后的齿轮传动系统在减小体积的同时,承载能力也有所提高,优化效果较为显著,对生产实际有参考意义。基于轨道车辆动力学基本理论,结合电牵引单轨吊工作环境和运行方式的特殊性,针对单轨吊驱动系统的动力学行为进行探讨。将单轨吊中的各种轮对作用在动力学分析中进行等效简化,建立了电牵引单轨吊驱动系统在直线和曲线轨道上的受力模型,获得该系统稳定性的影响因素。分析指出使用较大夹紧力和刚度的轮对有利于增加系统稳定性,为后续试验研究和系统仿真奠定理论基础。基于建立单轨吊驱动系统简化模型的方法,利用Pro/E建立电牵引单轨吊驱动系统的三维模型,采用ADAMS分别对齿轮传动部分和驱动系统整体进行动力学仿真,以控制负载、夹紧力、输入速度、和轨道类型等工作参数的方式对单轨吊驱动系统动力学特性进行研究,并分析各工作参数下电牵引单轨吊驱动系统振动加速度、输入扭矩及启动时间的变化规律,为单轨吊运行参数的选取和轨道的设计提供指导。以山东能源重装集团鲁中装备制造有限公司生产的DC120/80Y型柴油机牵引单轨吊及其检测轨道作为试验平台,对单轨吊在进行多种轨道类型、多种夹紧力以及多种负载条件下的动力学特性进行试验研究,并与动力学仿真进行对比,验证了单轨吊驱动系统简化模型的正确性,为进一步对电牵引单轨吊驱动系统的仿真研究提供试验依据。
[Abstract]:Monorail crane is the key equipment of auxiliary transportation in coal mine, and the driving system is the main working part of monorail crane. There are few monorail cranes driven by motor, so the dynamic characteristics of electric traction monorail crane drive system are studied. It can fill in the blank of motor drive of monorail crane, improve the driving characteristics of electric traction monorail crane, and realize the safe and efficient development of underground auxiliary transportation. In this paper, the driving system of electric traction monorail crane is taken as the research object. Based on the theory of optimal design, nonlinear finite element analysis and dynamics of rail vehicle, the dynamic characteristics of electric traction monorail crane drive system are studied. The gear transmission system of the electric traction monorail crane drive system is simplified properly, and the Fmincon function in MATLAB is used to optimize its design. The finite element analysis of the transmission system before and after optimization is carried out by using the Modal module and Transient module of ANSYS/Workbench. The modal frequency and mode shape of the transmission system before and after the optimization and the stress distribution in the meshing process are obtained. The results show that the optimized gear transmission system not only reduces the volume, but also improves the bearing capacity of the gear transmission system. Based on the basic theory of rail vehicle dynamics, combined with the particularity of working environment and operation mode of electric traction monorail crane, The dynamic behavior of the driving system of monorail crane is discussed. The equivalent simplification of various wheelsets in monorail crane in dynamic analysis is carried out, and the force model of driving system of electric traction monorail crane on straight line and curve track is established. The factors affecting the stability of the system are obtained. It is pointed out that the wheelset with large clamping force and stiffness can increase the stability of the system. Based on the simplified model of monorail crane drive system, the three-dimensional model of electric traction monorail crane drive system is established by using Pro/E. The dynamic simulation of the gear drive part and the whole driving system is carried out by using ADAMS, and the dynamic characteristics of the monorail crane drive system are studied by controlling the working parameters such as load, clamping force, input speed and track type. The variation rules of vibration acceleration, input torque and start-up time of electric traction monorail crane drive system under various working parameters are analyzed. This paper provides guidance for the selection of operating parameters and the design of track for monorail crane. Taking the DC120/80Y diesel engine traction monorail crane and its testing track produced by Shandong Energy heavy loading Group Luzhong equipment Manufacturing Co., Ltd as the test platform, The dynamic characteristics of monorail crane under various rail types, clamping forces and loads are experimentally studied, and compared with dynamic simulation, the correctness of simplified model of monorail crane driving system is verified. It provides experimental basis for further simulation research of electric traction monorail crane drive system.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD634

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