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从国外发展电力牵引的趋势看,电力牵引一般多采用在繁忙的干线和山区,机车的轴功率越做越大,机车设计功率和直线区段发挥的粘着功率越来越接近。但将这种机车用于山区,由于山区铁路坡道较大,曲线多且小,一般在限制换算坡道上有小半径曲线,因此往往在要机车发挥大牵引力的区段上,由于机车通过曲线时钢轨和轮缘发生挤压和摩擦及轮轨间有相对滑动,使机车粘着状态变坏,造成计算牵引定数时不能按电机设计的牵引力来计算。如秦—广
From abroad to develop the trend of electric traction, electric traction is generally used in busy trunk and mountainous areas. The axle power of the locomotive is getting larger and larger, and the locomotive design power and the linear section play the adhesive power getting closer and closer. However, this kind of locomotives are used in mountainous areas. Since the mountain railway has a large ramp with many curves and small tracts, it usually has a small radius curve on the limited conversion ramp. Therefore, on locomotives that require large traction, locomotives pass curves When the rails and rims occur squeezing and friction and the relative sliding between the wheel and rail, so that the deterioration of locomotive adhesion, resulting in the calculation of the traction number can not be calculated by the motor design traction. Such as Qin - wide