移动式救援升降梯设计及仿真研究

发布时间：2018-04-18 08:41

本文选题：救援 + 校核　；参考：《吉林大学》2012年硕士论文

【摘要】：近几年来，随着社会的发展，船闸、桥梁、港口、码头、水库、电站等大型地下场所迅速发展起来。鉴于地下建筑的特殊性，导致其发生火灾后所面临的形势异常严峻，如果抢险救援工作不当，将会造成非常严重的后果。针对三峡船闸救援工作的特点，结合其它救援场合，本文首先提出了三套移动式升降梯的整体设计方案。通过认真比对每套方案的优缺点，最终确定了最优方案。它应用常用电梯的基本原理，采取3段可以伸缩的直立式电梯相互连接的创新思想，将电梯由传统的倾斜式变成直立式，增加了救援深度，节省了工作空间，具有快速安全、可靠方便的特点。在完成最终方案选择后，进行了详细的结构设计，并对关键部件进行了受力分析和校核计算，为各组件的准确选型提供了依据。为了使设计更为可靠合理，本文在结构设计的基础上采用有限元分析软件ANSYS，通过建模功能强大的Pro/E软件进行建模导入，根据一些基本的假设（模型的简化、力和边界条件的简化等），计算出了梯架在工作状态承载情况下的应力和变形，检验了设备强度和刚度是否满足要求。本文最后利用动力学仿真软件ADAMS建立了变幅机构的仿真模型，对龙门架翻转过程进行了动力学仿真，在此基础上应用ADAMS优化模块，设置合理变量参数和目标函数，采用非线性二次规划计算方法，进行了优化设计研究。结果表明：优化后的绞点位置改善了油缸的受力状况，缩短了油缸最大伸长长度，提高了装置整体稳定性能。通过本文的研究，基本解决了移动式深度救援升降梯在设计生产过程中的主要问题，，为该设备的研究提供了一种全新的研究分析方法，也为深度救援设备以后的发展提供了一个参考方向。
[Abstract]:In recent years, with the development of society, large underground places such as lock, bridge, port, wharf, reservoir and power station have developed rapidly.In view of the particularity of underground building, the situation it faces after fire is very serious. If the rescue work is not proper, it will cause very serious consequences.According to the characteristics of the rescue work of the three Gorges ship lock and other rescue occasions, this paper first puts forward three sets of overall design scheme of the mobile elevator.By carefully comparing the merits and demerits of each set of schemes, the optimal scheme is finally determined.It applies the basic principle of common elevators and adopts the innovative idea of connecting each other with three sections of vertical elevators which can be telescoped. The elevator is changed from the traditional inclined type to the vertical type, which increases the rescue depth, saves the working space, and is fast and safe.The characteristic of being reliable and convenient.After the final scheme selection is completed, detailed structural design is carried out, and the stress analysis and checking calculation of the key components are carried out, which provides the basis for the accurate selection of each component.In order to make the design more reliable and reasonable, the finite element analysis software ANSYSand the powerful modeling software Pro/E are used in this paper. According to some basic assumptions (simplification of the model),The stress and deformation of the ladder frame under the condition of working load are calculated, and the strength and stiffness of the equipment are tested to meet the requirements.In the end, the simulation model of the amplitude change mechanism is established by using the dynamic simulation software ADAMS, and the dynamic simulation of the gantry frame turnover process is carried out. On this basis, the reasonable variable parameters and the objective function are set up by using the ADAMS optimization module.The optimization design is studied by using nonlinear quadratic programming method.The results show that the optimized point position improves the stress condition of the cylinder, shortens the maximum elongation length of the cylinder, and improves the overall stability of the device.Through the research in this paper, the main problems in the design and production of the mobile deep relief elevator are basically solved, which provides a new research and analysis method for the research of the equipment.It also provides a reference for the future development of deep rescue equipment.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH21;X924.4

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