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Φ690连轧机组主减速器,新安装的中硬齿面渐开线人字齿轮使用三个月后检修时,发现齿轮损伤较严重。为此,对减速器进行现场测试及故障分析。Φ690连轧机组结构如图1,主减速器为二级渐开线人字齿轮减速器。各特征频率理论值:f_1=4.12;f_2=0.867;f_3=0.412;f_(c1)=98.88;f_(c2)=24.28。测试及分析系统如图2所示,测点1、2、3、4分别布置在Ⅰ、Ⅱ、Ⅲ、Ⅳ轴上。图3、图4分别为齿轮箱测点1的垂直及水平方向振动的自功率谱图。从图中可以看到在99HZ处有一突峰,比其它频率的能量高出一个数量级。该频率
Φ690 continuous rolling mill main reducer, the newly installed in the hardened involute HG gears used after three months overhaul, gear damage was found more serious. To this end, the reducer for field testing and fault analysis. Φ690 continuous rolling mill structure shown in Figure 1, the main reducer for the second involute herringbone gear reducer. Each characteristic frequency theoretical value: f_1 = 4.12; f_2 = 0.867; f_3 = 0.412; f_ (c1) = 98.88; f_ (c2) = 24.28. Test and analysis system shown in Figure 2, measuring points 1,2,3,4 were arranged in Ⅰ, Ⅱ, Ⅲ, Ⅳ axis. Figure 3, Figure 4, respectively, for the gear box measuring point 1 vertical and horizontal vibration of the self-power spectrum. It can be seen from the figure that there is a sudden peak at 99HZ, which is an order of magnitude higher than the other frequencies. This frequency