轮轨间的粘着力依然是列车牵引学中的基本问题之一。在这方面所要研究问题的范围很广泛。它涉及到物理分子引力理论;走行部分构造特点对粘着重量利用的影响;化学的、机械的、磁性的和其它增加粘着力的方法;防止空转电气装置的设置问题;机车动力作用对粘着系数的影响等。近来,单个轮对的粘着系数引起了大家很 The adhesion between the wheel and rail is still one of the basic problems in train traction. The range of issues to be studied in this area is very wide. It involves the theory of physical molecular gravitation; the effect of some structural features on the adhesive weight utilization; chemical, mechanical, magnetic and other methods to increase the adhesion; prevent the setting problem of idling electrical devices; locomotive dynamic effects on the adhesion coefficient Influence and so on. Recently, the adhesion coefficient of a single wheel pair has caused everyone’s attention