论文部分内容阅读
东风3型机车装用的ZQFR—1350型主发电机(以下称主发电机)随着机车运用时间的增加,近年来电枢接地故障十分突出。仅在1983年8～11月,我段就连续出现三起此类问题。故障原因都是电枢铁芯后压圈和支架配合的轴向键磨损旷动或者键被切断使后压圈沿圆周方向移动而致绕组绝缘磨破。主发电机电枢接地后果严重,不仅造成机破、临修,危害行车安全,而且落车检修远比牵引电动机费时费力,甚至机务段解决不了,需要进工厂修理。因此,探讨和解决主发电机电枢接地是保证机车安全运行的一个重要问题。主发电机自冷风扇装在电枢铁芯后压圈上,后压圈和支架之间是一种过渡配合形式的安装。同时靠在圆周方向成180°角的两根轴向键联结。后压圈的自重为166公斤,其上面安
Dongfeng 3 locomotive installed ZQFR-1350-type main generator (hereinafter referred to as the main generator) with the use of locomotives increased time, armature grounding fault in recent years is very prominent. Only in August and November 1983 saw three consecutive such problems in my paragraph. Fault causes are armature core back pressure ring and the bracket with the axial key wear Kuangkuang or the key is cut off so that the pressure ring along the circumferential direction of movement caused by winding insulation breakdown. The main generator armature grounding serious consequences, not only caused by broken machine, temporary repair, endanger traffic safety, and take-off maintenance far more time-consuming than the traction motor, or even the maintenance section can not be resolved, need to enter the factory repair. Therefore, to explore and solve the main generator armature grounding is to ensure the safe operation of the locomotive is an important issue. The main generator self-cooling fan mounted on the armature core pressure ring, the pressure ring and the bracket is a form of transition between the installation. At the same time by the 180 ° angle in the circumferential direction of the two axial keys. The weight of the back pressure ring is 166 kg, the above safety