600匹液压打桩机智能冷却系统的研究

发布时间：2018-05-20 12:28

  本文选题：冷却系统 + 打桩机　； 参考：《湘潭大学》2017年硕士论文

【摘要】：随着我国基础建设的高速发展,跨海大桥、高层建筑、铁路高架桥等建设项目不断增多,施工处的地质条件越来越复杂,建设难度也越来越高,因此,对工程中所需要的大型工程设备的要求也越来越高,而桩工机械又是大型工程设备中的重中之重。600匹液压打桩机是我国自行研制的大功率桩工机械,广泛应用于建筑、桥梁、码头和海洋工程等项目的桩基础施工。由于打桩机作业环境复杂,且需要长时间高负荷运行,因此其液压油冷却系统经常出现过热甚至严重过热的问题,影响工程进度及施工质量。为解决600匹液压打桩机液压油冷却系统的过热问题,本文作者在大量查阅国内外文献并与打桩机生产厂家交流后,研制了适用于打桩机液压油散热的智能冷却系统并运用AMESim软件对该系统仿真分析。通过智能冷却系统的安装测试结果表明,此智能冷却系统较好的解决了600匹液压打桩机液压油过热的问题。论文的具体研究内容及创新成果如下:1.设计了针对600匹液压打桩机的智能冷却系统,包括智能冷却系统控制方案的设计、冷却系统液压元件的匹配、控制软件算法的设计等;2.选择最优的散热器制造材料并制定了散热器焊接工艺;3.针对600匹液压打桩机液压油散热器的散热要求及安装尺寸,确定了散热器的结构及尺寸参数,并对散热器进行校核计算,同时对散热器内流体的阻力进行了计算,计算出空气及液压油通过散热器的阻力,为冷却系统液压元件的匹配提供依据;4.运用AMESim软件建立了600匹液压打桩机智能冷却系统的仿真模型,依据智能控制原理建立了以气-液换热器、双风扇、热负荷组件为主要分析对象的仿真模型,并利用软件内的控制元件和温度传感器组合,实现对风扇转速的智能控制,分别设置环境温度为35℃和45℃,得出不同环境温度下液压油的温度变化曲线;5.在35℃环境温度下对智能冷却系统进行实机试验,证明该智能冷却系统完全满足600匹液压打桩机液压油的散热要求,通过试验结果与仿真结果对比,证明了基于AMESim软件打桩机智能冷却系统仿真建模的可行性,为冷却系统的优化设计提供了参考依据。
[Abstract]:With the rapid development of China's infrastructure, the number of construction projects such as cross-sea bridges, high-rise buildings and railway viaducts is increasing, and the geological conditions of the construction sites are becoming more and more complex and the construction is becoming more and more difficult. The requirement of large engineering equipment is higher and higher, and piling machinery is the most important part of the large engineering equipment. 600 hydraulic piling machines are high power piling machines developed by our country, which are widely used in buildings and bridges. Pile foundation construction for projects such as wharf and ocean engineering. Because the working environment of pile driver is complex and needs a long time and high load operation, the hydraulic oil cooling system often overheat or even seriously overheat, which affects the project progress and construction quality. In order to solve the overheating problem of the hydraulic oil cooling system of 600 hydraulic pile drivers, the author consulted a large number of literatures at home and abroad and communicated with the pile driver manufacturers. An intelligent cooling system suitable for the heat dissipation of hydraulic oil of pile driver is developed and simulated by AMESim software. The test results of the intelligent cooling system show that the intelligent cooling system can solve the problem of 600 hydraulic pile driver hydraulic overheating. The specific research contents and innovative results of this paper are as follows: 1. The intelligent cooling system for 600 hydraulic pile drivers is designed, including the design of the control scheme of the intelligent cooling system, the matching of the hydraulic components of the cooling system, the design of the control software algorithm and so on. The optimum radiator manufacturing material is selected and the welding process of radiator is made. According to the heat dissipation requirements and installation dimensions of hydraulic oil radiators of 600 hydraulic pile drivers, the structure and dimension parameters of the radiators are determined, the radiators are checked and calculated, and the resistance of the fluid in the radiator is calculated. The resistance of air and hydraulic oil through the radiator is calculated, which provides the basis for the matching of hydraulic components in cooling system. The simulation model of intelligent cooling system of 600 hydraulic pile drivers is established by using AMESim software. According to the principle of intelligent control, the simulation model of gas-liquid heat exchanger, double fan and heat load module is established. The intelligent control of fan rotational speed is realized by the combination of control element and temperature sensor in the software. The ambient temperature is set at 35 鈩，

本文编号：1914623