轻型全液压清扫除尘车辆液压系统的设计与研究

发布时间：2018-04-13 11:30

本文选题：清扫除尘车 + 液压系统　；参考：《广西大学》2012年硕士论文

【摘要】：随着城市的快速发展,对广场、火车站以及公园等公共场所的清扫和保洁任务也就显得越发的艰巨。因此,设计与研究出适应现代化环卫发展要求的新型、高效、环保的清扫车具有重要的理论意义和实用价值。本文首先介绍了国内外清扫车的发展现状,通过对轻型全液压清扫车技术要求进行分析,设计出了清扫车行走驱动及各个工作模块的液压驱动方案。其中,行走系统采用静液压无级变速驱动和闭式循环系统及在盘刷清扫和转向液压子系统中采用转向优先分流技术,可保证清扫车正常行驶、工作和转向；在风机回路中添置一个单向阀,能有效的避免风机由工况转变为非工况时风机因旋转惯性而造成的液压冲击,从而延长其使用寿命。其次,对清扫车液压系统的组成元件进行了设计、计算和元件的选型以及液压集成块的设计。最后,运用FLUENT仿真软件对清扫车风机的两类不同叶轮形式进行建模与仿真,通过分析与比对两类风机叶轮的静压、总压、湍动能及速度的分布云图,从而选择出适合于应用在清扫车上的风机结构。对轻型全液压清扫除尘车辆进行了液压系统的设计与研究,并与协作企业共同开发出了全液压清扫车的样机,运用FLUENT仿真软件对抽风机结构进行建模与仿真,对清扫车的抽吸系统结构进行了优化,为整车结构的改进提供了理论依据。同时,在对样机进行安装与调试过程中出现的爬坡和吸嘴上升问题进行了调试与改进。
[Abstract]:With the rapid development of cities, the task of cleaning and cleaning public places such as squares, railway stations and parks is becoming more and more arduous.Therefore, it is of great theoretical significance and practical value to design and research a new type of sweeper which can meet the requirements of modern sanitation development.This paper first introduces the development status of sweeper at home and abroad, through the analysis of the technical requirements of light full hydraulic sweeper, designs the hydraulic driving scheme of sweeper driving and each working module.Among them, the walking system adopts hydrostatic stepless variable speed drive and closed circulation system, and adopts steering preferential shunt technology in brush cleaning and steering hydraulic subsystem, which can ensure the normal running, working and steering of sweeper.Adding a one-way valve to the fan loop can effectively avoid the hydraulic impact caused by rotating inertia when the fan changes from working condition to off-condition, thus prolonging its service life.Secondly, the components of the hydraulic system for sweeper are designed, calculated and selected, and the hydraulic manifold block is designed.Finally, FLUENT simulation software is used to model and simulate two different types of impellers of sweeper fan. By analyzing and comparing the distribution of static pressure, total pressure, turbulent kinetic energy and velocity of the two kinds of fan impellers, the distribution cloud diagram of impeller pressure, total pressure, turbulent kinetic energy and velocity are analyzed and compared.Thus, the fan structure suitable for application in sweeper is selected.The design and research of hydraulic system for light duty fully hydraulic cleaning and dedusting vehicle are carried out, and the prototype of full hydraulic sweeper is developed together with cooperative enterprises, and the structure of the extractor is modeled and simulated by FLUENT simulation software.The pumping system structure of sweeper is optimized, which provides a theoretical basis for the improvement of the whole vehicle structure.At the same time, the problems of climbing and nozzles rising in the process of installation and debugging of the prototype are debugged and improved.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137;U469.691

【参考文献】