ZD115型牵引电机检查与维护.docx

毕业设计（论文） ZD115型牵引电机检查与维护 *** *** 2018年12月 毕业设计（论文） ZD115型牵引电机检查与维护 姓名 ： *** 指导教师 ： *** 专业 ： 铁道机车（电力机车）专业 学院 ： 铁道机车学院 答 辩 日 期 ： 2018年12月 单位 ： *** 摘 要 - PAGE I - 摘 要 机车牵引动力主要取决于牵引电动机的运行状态良好与否。牵引电动机在运行中受力非常复杂，主要有电动机在启动加速过程中承受各部件的扭力、牵引力，机车通过曲线作用于走行部和车体的离心力,高速运行产生共振及各滑动部件的摩擦力,因此，机车经过一段时间运用后,不可避免地出现一些损伤。即各零部件会发生不同程度的自然磨损,各紧固螺栓松动发生折损、裂纹、松旷、变形、蚀损或物理化学变化，换向器表面短路，电刷磨损或电刷压簧松动等。若不能及时准确对牵引电动机进行保养和检修，就会加速局部故障的扩大或部件损坏,甚至引发事故，造成电机烧损。因此每次出车回段要严格执行机车整备作业要求,发现问题及时报修。 ZD115型脉流牵引电机功率大，恒功速比大，但作为客运电力机车牵引电机，经常在高速工况下运行，其电流脉动成份大.设计时，电机的换向参数和电位条件(如最大电抗电势、最大片间电压、最大电位梯度、换向器单位长度上的能量指标等)均接近允许极限值，对换向很不利，为了改善电机的换向，在设计时采用了一些新结构，相应在制造时实施了新工艺为确认这些措施的效果，我们对ZD115型电机运行情况进行追踪，对SS9型机车共6台ZD115型电机进行拆检并查阅,获取了大量数据。 关键词：牵引电动机,检查,维护 Abstract Abstract - PAGE II - Abstract Locomotive traction power mainly depends on whether the traction motor is 、which mainly includes the torsion and traction of each component in the starting and accelerating process of the motor, and the centrifugal force of locomotive acting on the walking part and the body through the curve. The high speed operation produces resonance and friction of the sliding parts. Therefore, after a period of operation, there will inevitably be some damage to the locomotive. That is, various parts will have varying degrees of natural wear, the loosening of fastening bolts will be broken, cracked, loosened, deformed, corroded or physical and chemical changes, commutator surface short circuit, brush wear or brush Spring loosening, etc. If the traction motor can not be maintained and overhauled in time and accurately, it will accelerate the expansion of the local fault or the damage of the parts, and even cause the accident and cause the motor to burn out. Therefore, the locomotive preparation requirements should be strictly carried out at each running and back stage, and problems should be reported for repair in time. ZD115 type pulse current traction motor has a large power and constant power speed ratio, but as a passenger