重型矿用变速箱结构强度分析与优化设计

发布时间：2018-03-29 13:54

本文选题：变速箱　切入点：矿用　出处：《江苏大学》2016年硕士论文

【摘要】：重型自卸车是煤矿中的主要运输车辆,由于受恶劣地理运输环境,导致普通重型自卸车事故频发。变速箱作为车辆重要动力总成,在换挡、结构强度方面至关重要。矿用变速箱作业环境恶劣,路面凸凹不平,对变速箱使用质量是一个严重考验,特别是频繁的换挡造成的变速箱故障更不可避免,研发出矿用重型变速箱变的尤为重要。本文在总结对国内外重型变速箱发展现状的基础上,对公司某重型变速箱的设计依据、结构原理进行了介绍,重点分析换挡机构部分、主轴系部分和副箱组件部分。换挡机构的灵活性、可操作性、结构强度对矿用变速箱频繁换挡是一个严重考验,是保证变速箱使用稳定的重要部分。主轴的结构强度关系着变速箱使用的动力性与可靠性,至关重要。在本文中,以矿车变速箱稳定性、可靠性和使用经济性为目标,采用先进实用的结构和工艺及新材料,并对矿用变速箱研发原型进行了关键部件的结构强度分析及优化设计,同时实现了实验分析及验证,为矿用变速箱的优化设计提供实验数据及改进的基础,最终保证了矿车变速箱性能良好、结构简单、紧凑、换挡灵活可靠。在本研究中,主要从主轴结构及换挡机构方面进行了研究。主轴方面,对主轴进行加粗,对具体加粗尺寸进行了实验对比分析,主轴增加润滑油道。换挡机构方面,对拨叉轴进行加强,理论计算并实验得出具体加强厚度等。通过以上强度分析结构看出,变速箱重要部位结构进行了加强,经试装实验、温升实验、噪声实验及静扭试验,结果达到矿用变速箱使用要求,取得了效果,具有重要的意义。
[Abstract]:Heavy duty dump truck is the main transportation vehicle in coal mine. Because of the bad geographical transportation environment, the accidents of ordinary heavy duty dump truck occur frequently. The gearbox, as the important power assembly of the vehicle, is shifting gears. Structural strength is very important. The working environment of mine gearbox is bad and the road surface is uneven, so it is a serious test to the gearbox quality, especially the gearbox failure caused by frequent shift is more inevitable. On the basis of summarizing the development of heavy duty gearbox at home and abroad, this paper introduces the design basis and structural principle of a heavy duty gearbox in our company, with emphasis on the analysis of gear shifting mechanism. The flexibility, maneuverability and structural strength of the shift mechanism are a serious test for the frequent shift of the mine gearbox. The structural strength of the spindle relates to the power and reliability of the gearbox. In this paper, the stability, reliability and economy of the gearbox are the targets. Using advanced and practical structure, technology and new materials, the structural strength analysis and optimization design of key parts of the prototype of mine gearbox are carried out. At the same time, the experimental analysis and verification are realized. This paper provides experimental data and improved basis for optimization design of mine gearbox, and finally ensures that the gearbox of mine car has good performance, simple structure, compact structure, flexible and reliable shift. This paper mainly studies the main shaft structure and gear shifting mechanism. In the main shaft aspect, the main shaft is thickened, the specific thickening size is compared and analyzed experimentally, the main shaft increases the lubricating oil channel, and the shift mechanism strengthens the fork shaft. Through the above strength analysis structure, it can be seen that the structure of the important parts of the gearbox has been strengthened, through the trial test, the temperature rise experiment, the noise experiment and the static torsion test, etc. Results meet the requirements of mine gearbox, obtain the effect, have important significance.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD50

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