变速器扭矩测量及其标定装置设计
摘 要
本说明书主要是设计变速器一轴扭矩测量及标定装置，而扭矩传感器的选择和传输方式的选择是本次设计的重点。
扭矩传感器选择了电阻应变片式，传输方式选择了轴通式，而四个应变片接成全桥，然后引出线接到四个集流环上，集流环与轴一起转动，电信号再通过电刷（设计成起落架式电刷，为了减少磨损）传输给PCM数据采集系统。考虑到该设备所用的领域，对应变片处的直径进行了计算，额定扭矩小于100N.m的变速器一轴均可测量。
本次设计参考了以往的设计，并进行了改进，后边附有相关内容的参考文献和附录。
由于设计过程中贯穿了三化，大大的提高了其使用寿命和维修性。
标定装置的设计主要考虑到如何加载的问题，选择了一端用花键连接并用螺栓固定在实验台上，另一端用花键连接并与加载杠杆一起转动，通过这种方式产生扭转，并测试其轴的扭矩，绘制标定曲线。
关键词：应变片式扭矩传感器，集流环，PCM3132数据采集系统，标定装置
DESIGN OF A TRANSMISSION SHAFT TORQUE
MEASUREMENT AND CALIBRATION DEVICE
ABSTRACT
Summary of the manual transmission design is a shaft torque measurement and calibration equipment home, and torque sensor choice and the choice of the transmission mode of this design is the key.
Torque Sensor choose strain gage type, the choice of the transmission mode shaft formula, and then four strain gauge make full bridge, then connect leading-out wire to four slip rings. Slip rings rotate with the axis. Electric signal transmitted to the PCM data acquisition system through brush. Taking into account the equipment used in the fields of the strain gauge the diameter, Rated torque less than 100 Nm fixation of a transmission shaft can be measured.
The design references the previous design, and has an improvement, afterward with the relevant content of the references and appendices. As the design process through the three and greatly improved its service life and maintainability.
Calibration device design mainly to the problem of how to feed one-end connected with spline and fixed on experimental stage with bolt and the other connected to spend bond with the loading lever rotation together, in this way have reversed, and test its axis torque, Drawing calibration curve.
Key words: strain gages-torque sensor, slip ring, PCM3132 data acquisition system, calibration device
目 录
第一章 前言…………………….. ………………1
第二章 概述 ……………………………………..3
第三章 扭矩传感器方案分析 …………………………4
- 3.1用电力测功器测扭矩………………………… 4
- 3.1.1直流电力测功器测量扭矩………………… 4
- 3.1.2交流电力测功器测量扭矩………………… 5
- 3.1.3电涡流测功器测量扭矩………………….. 5
- 3.2 用扭矩仪测扭矩………………………. ….. 6
- 3.2.1电阻应变片式扭矩仪……………………. 6
- 3.2.2相位差扭矩仪…………………………. 9
- 3.2.3 频闪观测式扭力计…………………….. 10
- 3.2.4 钢弦式扭矩仪………………………… 11
- 3.3 辅助装置………………………………. 12
- 3.3.1传输装置分析…………………………12
- 3.3.2 数据分析与采集系统…………………….12
第四章 设计计算及结构分析…….. .. ………………14
- 4.1 零部件的设计计算………………………….14
- 4.1.1离合器轴上贴应变片处直径的确定………….14
- 4.1.2 离合器轴和变速器一轴矩形花键连接长度的计算.14
- 4.1.3 一轴上薄弱截面强度校核计算…………….15
- 4.1.4 电桥输出电压的计算…………………….15
- 4.1.5 标定装置力和扭矩曲线图…………………16
- 4.2 零部件的结构特点及加工工艺性分析……………18
- 4.2.1测量装置…………………….18
- 4.2.2标定装置…………………….18
第五章 结论………………………………… ….20
参考文献………………………………………..21
致谢……………………………………………22
