毕业设计（论文）-液压机械变速箱闭式试验台设计（含全套CAD图纸）.doc

液压机械变速箱闭式试验台设计 摘　要 随着汽车工业的迅猛发展，变速箱作为汽车的重要传动部件，其操作性、传动性与安全性日显重要，为了缩短汽车变速箱的开发周期，降低研发成本，本论文以河南科技大学研发的1302R_HMT系统为基础，对液压机械变速箱的检测项目及检测方法进行了研究，设计和研发了“汽车变速箱性能检测系统”。本论文由以下几个部分组成： 1．系统的组成 试验台由直流电动机提供动力，利用快速安装机构定位、安装被测试的HMT；选NJ型转矩传感器作为力矩检测装置，选用直流发电机为加载装置，然后根据HMT的动力输出与加载装置的工作需求设计升速箱。 2．信号采集与处理 利用本校车动学院开发的PCM3132数据采集系统采集HMT的输入、输出转矩、转矩、油压、流量、温度等参数，为试验提供参考数据。通过A/D转换，由计算机屏幕显示。 根据以上分析，综合现有控制方案的特点的基础上给出了一种新型的变速箱试验台控制方案——直流电封闭机械传动试验台，并深入分析了其组成和工作原理，给出了硬件结构图和工作原理图，在此基础上根据模拟加载技术的要求提出了实现模拟加载功能的技术方案，对其中的一些关键环节进行了技术分析。该试验台实用性强，具有很高的推广价值。 关键词：功率封闭，电加载，变速箱，能量反馈 THE DESIGN OF THE DYNAMIC SIMULATION BENCH FOR TRACTOR HYDRAULIC MECHANICAL TRANSMISSION ABSTRACT With the rapid development of motorcar industries, the performance of gearbox is becoming more and more important. In order to shorten the development period of automatic transmissions of motorcar and reduce the research cost, this paper regards the HMT dynamic system of 1302R of Henan University of Science and Technology as the research background, and carried on a research about the test item and the method, then developed a test system for the performance of HMT. This article consists of several components below: First, we introduce the system’s structure in general: the tester’s energy is provided by the direct current motive, making use of the quickly install equipment of fixed the position of HMT; choosing the NJ type’s torque equipment to test the torque, choosing the direct current generator as an add device, then design a gearbox according to the output power of the HMT. Second, using the PCM3132 detecting the system’s oil pressure, controlling oil pressure, cooling flow or discharge etc, all these above parameters will contribute to diagnose the HMT. These signals can be output to the screen and displayed through an A/D change. This paper introduces the components and working principle of the DC-power closed mechanical drive tester, on the basis of which the analog loading scheme of the DC power closed tester is presented an i