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从事设备状态监测与诊断工作,要得到科学的、有实际使用价值的诊断结论,必须掌握设备的工作原理及尽可能多的原始数据,计算出相应的故障特征参数。 弄清被诊断设备的工作原理不难,但参数的收集、计算工作却十分繁重。以TR—100B—1波兰八米卧车而言,许多形状不规则的零部件,其固有频率计算公式必须经过大量的实验才能得出。最初从事故障诊断工作时,往往仅计算各轴转频与啮合齿对的啮合频率,有时甚至还计算必要数目的传动路线(档次)及对应各轴轴承的工作频率;识谱困难,更谈不上诊断设备的劣化原因、部位及趋势,使设备故障诊断工作收获很小。下面以TR—100B—1八米卧车为例,介绍笔者在收集原始数据、计算故障特征参数中的切身体会。 一、弄清被测设备传动路线,确定测试档次
Engaged in equipment condition monitoring and diagnosis work, to get a scientific, practical diagnostic value of the use of conclusions, we must master the working principle of the equipment and as much as possible the original data to calculate the corresponding fault characteristics parameters. Understand the working principle of the equipment being diagnosed is not difficult, but the parameters of the collection, calculation work is very heavy. To TR-100B-1 Poland eight meters sleeper, many irregularly shaped parts, the natural frequency formula must be subjected to a large number of experiments to be drawn. Initially engaged in fault diagnosis, often only calculate the frequency of each shaft and meshing teeth meshing frequency, and sometimes even calculate the necessary number of transmission lines (grades) and the corresponding bearing operating frequency; identification of the spectrum is difficult, let alone not On the reasons for the deterioration of diagnostic equipment, parts and trends, so that equipment failure diagnosis work is small. The following to TR-100B-1 eight meters sleeper car, for example, introduces the author in the collection of raw data, calculate the fault characteristics of personal experience. First, make sure the transmission line of the tested equipment, determine the test grade