一种新型换挡离合器的设计与工作特性仿真

发布时间：2018-05-21 19:20

本文选题：电液控制 + 定轴式　；参考：《郑州大学》2011年硕士论文

【摘要】：电液控制定轴式动力换档变速器是一种在工程机械中应用比较广泛的变速器,变速箱中的齿轮都是常啮合的。采用的是液压操纵的多片湿式摩擦离合器进行换挡并且换挡时不必切断动力。因此,在变速箱中,换挡离合器性能的好坏对整个变速箱的性能的提升起着至关重要的作用。对其换挡离合器的结构以及性能进行分析研究具有很好的现实意义和经济价值。本课题来源于郑州大学机械工程学院与郑州宇通重工的联合申报的河南省重点科技攻关项目“电液换挡定轴式装载机用变速器的研制”。在此过程中,我们通过对进口的DANA32000型电液换挡定轴式变速箱换挡离合器的结构以及性能进行了系统的研究分析,得出了其工作原理,包括：机械、电控、液压方面的工作机理,并在此基础上,以8吨装载机使用变速箱所需的一些技术要求为设计基准重新进行了设计。本文主要包括了以下两方面的内容： (1)针对8吨装载机的设计要求,完成了以动力装备的选配为设计基础的变速箱内部传动系的分析、设计和计算；然后对换挡离合器进行了设计计算并建立起了三维模型；在此基础上对参与动力传动的主要部件进行了力学性能分析。 (2)利用系统高级建模与仿真软件AMESim,以实际设计中的一些数据为参数建立了一组换挡离合器的工作仿真模型并对其工作特性进行了分析研究。分析结果显示,动力传动的结构件安全性良好；所设计的换挡离合器在液压的控制下能够较好的实现换挡。这为后期的样机生产和物理实验的进行提供了必要的技术基础。
[Abstract]:Electro-hydraulic control fixed axis power shift transmission is a kind of transmission which is widely used in construction machinery. The gears in the gearbox are usually engaged. A hydraulic-operated multi-disc wet friction clutch is used to shift gears without cutting off the power. Therefore, in the gearbox, the performance of the gearshift clutch plays an important role in improving the performance of the whole gearbox. It is of great practical significance and economic value to analyze and study the structure and performance of the shift clutch. This subject comes from the joint application of Zhengzhou University School of Mechanical Engineering and Zhengzhou Yutong heavy Industry to tackle key scientific and technological problems in Henan Province, "the Development of Transmission for Electro-hydraulic shift fixed Axle Loader". In this process, the structure and performance of the imported DANA32000 type electro-hydraulic gearbox gearshift clutch are systematically studied and analyzed, and the working principles are obtained, including: mechanical, electrically controlled, hydraulic working mechanism. On this basis, some technical requirements for the use of the gearbox for the 8 ton loader are redesigned for the design benchmark. This paper mainly includes the following two aspects: 1) according to the design requirements of the 8 ton loader, the analysis, design and calculation of the transmission system of the gearbox based on the selection of power equipment are completed, and then the design and calculation of the shift clutch are carried out and the 3D model is established. On this basis, the mechanical properties of the main components involved in power transmission are analyzed. Using the advanced modeling and simulation software AMESimand taking some data in the actual design as parameters, a working simulation model of shift clutch is established and its working characteristics are analyzed and studied. The analysis results show that the structure of power transmission is safe and the designed shift clutch can shift gear well under the control of hydraulic pressure. This provides the necessary technical basis for the later prototype production and physical experiment.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.4

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