土压平衡顶管机液压驱动系统研究

发布时间：2018-04-14 15:01

本文选题：土压平衡 + 顶管机　；参考：《安徽理工大学》2014年硕士论文

【摘要】：土压平衡顶管机是一种集多项技术于一体的地下管道铺设设备,具有使用土质范围广、性能稳定、环境污染小和地面变形小等优异性能。近年来,伴随着我国城市化进程的加快,土压平衡顶管机的使用范围日益广泛,研究其驱动系统的相关设计理论与设计方法,可为顶管机设备的设计制造提供一定的理论参考。本文首先分析了国内外顶管机行业的发展历史与研究现状,重点分析了土压平衡顶管机的驱动方式和驱动系统的发展方向,提出液压驱动方式具有安装尺寸小、成本低以及适应剧变工况等优点更适合作为土压平衡顶管机的驱动方式,并以工称直径(?)2200mm土压平衡顶管机为例,采用理论分析、参数计算和模拟仿真等方法,设计出其液压驱动系统并进行性能仿真。论文所设计的土压平衡顶管机液压驱动系统分为刀盘驱动系统、纠偏驱动系统和输土驱动系统,其中刀盘驱动系统采用变量泵—变量马达闭式容积控制回路、油缸“#”字型布置的纠偏驱动系统、输土系统采用变量泵—定量马达开式容积控制回路,利用蓄能器实现出土闸口的紧急关闭。基于上述基础,完成了各系统参数匹配计算与关键液压元件选型,建立了AMESim仿真模型并进行仿真分析。仿真结果表明：刀盘驱动系统调速平稳,在剧变载荷条件下0.5s内刀盘能够稳定至额定转速工作；纠偏系统能在负载刚度1e-7N/m及以下的土层中正常工作；输土系统在负载波动条件下,能稳定工作,蓄能器在紧急情况下能快速关闭出土闸口。论文设计的液压驱动系统能够满足实际工程需要,为土压平衡顶管机液压驱动系统进一步优化设计提供一定参考。
[Abstract]:The soil pressure balanced pipe jacking machine is a kind of underground pipeline laying equipment which integrates many technologies. It has excellent performances such as wide range of use of soil, stable performance, small environmental pollution and small surface deformation.In recent years, with the acceleration of urbanization in China, the application of soil-pressure balanced pipe-jacking machine is becoming more and more extensive. To study the relevant design theory and design method of its driving system can provide a certain theoretical reference for the design and manufacture of pipe-jacking machine equipment.In this paper, the development history and research status of pipe-jacking machine at home and abroad are analyzed, and the driving mode and driving system of soil-pressure balanced pipe-jacking machine are emphatically analyzed. It is pointed out that the hydraulic driving mode has small installation size.The advantages of low cost and adapting to sudden changes are more suitable as the driving mode of the soil pressure balancing pipe jacking machine. Taking the weighing diameters of 2200mm earth pressure balancing pipe jacking machine as an example, the methods of theoretical analysis, parameter calculation and simulation are adopted, such as theoretical analysis, parameter calculation and simulation, etc.The hydraulic drive system is designed and its performance is simulated.The hydraulic driving system of the soil pressure balancing pipe jacking machine is divided into three parts: the cutter head drive system, the deviation correction drive system and the soil conveying drive system, in which the cutter head drive system adopts the closed volumetric control loop of variable variable pump and variable variable motor.The displacement correction drive system of "#" type of cylinder is arranged, the open volume control loop of variable pump and quantitative motor is adopted in the soil transportation system, and the emergency closure of unearthed gate is realized by accumulator.On the basis of the above, the parameter matching calculation and the selection of key hydraulic components are completed, and the AMESim simulation model is established and analyzed.The simulation results show that the speed regulation of the cutter head drive system is stable, the cutter head can work steadily to the rated speed within 0.5 s under the condition of sudden load change, and the bias correction system can work normally in the soil layer with load stiffness 1e-7N/m and below.Under the condition of load fluctuation, the system can work stably, and the accumulator can close the unearthed gate quickly in the case of emergency.The hydraulic drive system designed in this paper can meet the practical engineering requirements and provide a certain reference for the further optimization design of the hydraulic drive system of the soil pressure balance pipe jacking machine.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU990.3

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