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在传递动力的齿轮中,尤其是在煤矿机械所采用的低速重载齿轮中,接触应力通常很高,因此轮齿接触表面材质的局部弹性变形不应忽视;同时齿轮在共轭啮合过程中,除节点部位以外,均为滚、滑运动。上述传动特征全符合弹性流体动力润滑(Elaslo—Hydrodynamic Lubrication)理论的研究范围。迄今,对于齿轮接触疲劳强度的分析和计算,仍惯于沿用传统的Hertz公式,即以交变应力作用下测定试样的断裂循环次数而制定的S—N曲线,作为疲劳设计依据,然而实际传动齿轮由于各类工
In the power transmission gear, especially in low speed heavy load gear used in coal mining machinery, the contact stress is usually very high, so the local elastic deformation of gear contact surface material should not be neglected. At the same time, In addition to node sites, are rolling, sliding movement. The above transmission features are all within the scope of the Elaslo-Hydrodynamic Lubrication theory. So far, the analysis and calculation of the contact fatigue strength of gears is still accustomed to using the traditional Hertz formula, that is, the S-N curve, which is determined by measuring the number of fracture cycles of the specimen under alternating stress, as the fatigue design basis. However, the actual Transmission gear due to all kinds of workers