高速单立柱巷道式堆垛机的动态性能研究

发布时间：2018-05-04 08:22

本文选题：虚拟样机 + 模态分析　；参考：《东华大学》2012年硕士论文

【摘要】：堆垛机在汽车船舶,航空航天,烟草食品,机械加工等领域广泛应用,面对物流效率及效益目标的不断提高,空间高层化、速度高速化和高效能化必将成为堆垛机的发展趋势。然而我国堆垛机才刚刚起步,运行速度、起升高度等重要指标远远落后于国外先进水平,主要原因是传统经验测绘设计无法解决机械动态特性上的缺陷,例如强噪音和剧烈振动。如何实现高速单立柱堆垛机动态设计,改进堆垛机结构及控制方式是国内设计人员最为关心的问题,其中涉及到静刚度、动刚度、高加减速能力、噪音等关键指标,因此开展堆垛机的动态性能研究提高其整体性能具有重要意义,主要研究工作包括以下几个方面： 1)针对传统经验测绘设计缺陷,提出了基于虚拟样机技术的堆垛机动态设计方法,搭建了堆垛机动态设计集成环境,建立了堆垛机的虚拟样机模型。 2)利用有限元技术分析计算了单立柱堆垛机的固有频率和模态振型,并通过模态试验对比验证了模型的有效性。以此为基础,提出了变截面立柱优化设计方案,相同材料条件下,其刚度及固有频率分别提高6%和20%。 3)研究了堆垛机加减速运动机理,提出了一种新的双驱动控制方法,提高了堆垛机运动的稳定性。 4)研究并探索了集成环境下堆垛机整机结构优化技术,并给出相应的实例。
[Abstract]:The stacker is widely used in the fields of automobile and ship, aerospace, tobacco food, machine processing and so on. Facing the continuous improvement of logistics efficiency and benefit target, high level space, high speed and high efficiency, it will become the development trend of stacker crane. However, the stacker in our country has just started, and the important indexes such as running speed and lifting height lag far behind the advanced level of foreign countries. The main reason is that the traditional experience surveying and mapping design can not solve the defects of mechanical dynamic characteristics. For example, strong noise and violent vibration. How to realize the dynamic design of high speed single pillar stacker, improve the stacker structure and control mode is the most concerned problem for the domestic designers, including static stiffness, dynamic stiffness, high acceleration and deceleration ability, noise and so on. Therefore, it is of great significance to study the dynamic performance of stacker crane and improve its overall performance. The main research work includes the following aspects: 1) aiming at the defects of traditional empirical surveying and mapping design, a dynamic design method of stacker based on virtual prototyping technology is put forward, the integrated environment of dynamic design of stacker is built, and the virtual prototype model of stacker is established. 2) the natural frequency and modal mode of single pillar stacker are analyzed and calculated by finite element method, and the validity of the model is verified by modal test. Based on this, the optimum design scheme of column with variable cross section is put forward. Under the same material condition, the stiffness and natural frequency of column are increased by 6% and 20%, respectively. 3) the mechanism of stacker acceleration and deceleration is studied, and a new double drive control method is proposed to improve the stability of stacker motion. 4) the structure optimization technology of stacker under the integrated environment is studied and explored, and the corresponding examples are given.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH246

【参考文献】