连铸坯摆式飞剪剪切过程动力学仿真分析

发布时间：2018-04-08 23:00

本文选题：摆式飞剪　切入点：曲轴　出处：《武汉科技大学》2015年硕士论文

【摘要】：薄板坯连铸连轧技术是钢铁生产工业近年来最重要的技术进步之一，摆式飞剪是连铸连轧生产线上的重要设备，其主要功能是对铸坯进行切头切尾以及将铸坯剪切成要求的定尺长度。摆剪系统的正常运行与否极大地影响着生产线的生产作业，因此，对摆式飞剪进行动力学分析并评估摆剪的整体性能有着重要的理论指导意义和实际应用价值。本文以某钢厂连铸坯生产线摆式飞剪为研究对象，对其机构原理进行了介绍，分析了顶剪故障产生的原因，运用刚柔耦合系统动力学技术，对摆剪工作过程进行仿真，重点研究了曲轴以及摆动框架两个关键零部件，具体研究了以下内容：对摆剪进行多刚体动力学仿真分析，得到主要构件的运动轨迹和速度曲线；分别把曲轴和摆动框架作为柔性体，对摆剪剪切动作进行刚柔耦合动力学仿真分析，，得出摆剪各关键连接处的受力以及柔性体的应力和应变；同时把曲轴和摆动框架作为柔性体对摆剪进行动态仿真分析，得到柔性体的应力、变形状况以及各连接处的受力；以最大设计剪切力作为载荷进行仿真分析，考察系统的承载能力。仿真结果表明，摆剪系统承载能力良好，曲轴以及摆动框架的强度和刚度满足生产需求，曲轴和摆动框架是否作为柔性体会在一定程度上影响各自的应力状况以及系统其他部件的受力。本文的研究工作对摆剪的设计、改造及维护有着较大的指导意义。
[Abstract]:Thin slab continuous casting and rolling technology is one of the most important technological advances in iron and steel production industry in recent years, and tilting flying shear is an important equipment in continuous casting and rolling production line.Its main function is to cut the head and tail of the billet and to cut the billet into the required length.The normal operation of the pendulum shear system greatly affects the production of the production line, so it is of great theoretical significance and practical application value to analyze the dynamics of the pendulum shear and evaluate the overall performance of the pendulum shear.In this paper, the tilting flying shear of a continuous casting billet production line in a steel plant is taken as the research object, the mechanism principle is introduced, the causes of the failure of top shear are analyzed, and the working process of pendulum shear is simulated by using rigid-flexible coupling system dynamics technology.Two key parts of crankshaft and swing frame are studied emphatically. The following contents are studied in detail: the kinematic trajectory and velocity curve of the main components are obtained by dynamic simulation analysis of the pendulum shear;At the same time, the crankshaft and swing frame are used as flexible body to simulate and analyze the pendulum shear, the stress and deformation of the flexible body and the stress at the joint are obtained, and the maximum design shear force is taken as the load to simulate and analyze.Investigate the bearing capacity of the system.The simulation results show that the bearing capacity of the shearing system is good, and the strength and stiffness of the crankshaft and the swing frame meet the production requirements.Whether the crankshaft and the swing frame are flexible will influence the stress condition of each other and the force of other parts of the system to a certain extent.The research work in this paper is of great significance to the design, renovation and maintenance of pendulum shear.
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG333.21

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