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HXD3型机车牵引风机检修中的质量提升办法

2021-08-20郗珂立徐凤琳

机电工程技术 2021年11期

郗珂立 徐凤琳

摘要:HXD3型机车的辅助机组是机车重要的通风设备。由于初期检修能力的不足,2019年至今共出现了23次售后问题,包括异音或轴承固死等,给机车的检修质量和检修进度造成了很大的影响。为避免后续出现相同问题,组织技术人员和作业人员按照 HXD3型牵引风机的检修作业流程,结合检修规程及工艺,梳理了牵引风机在检修中重要的质量项点。经现场作业人员实践后,有效减少了牵引风机的售后问题,可为其他检修人员提供参考。

关键词:HXD3型机车;牵引风机;作业流程;检修项点

中图分类号:U279文献标志码:A文章编号:1009-9492(2021)11-0317-03

Quality Improvement Methods in Maintenance of Traction Fan for HXD3 Locomotive

Xi Keli,Xu Fenglin

( Xi′an Locomotive Maintenance Section,China Railway Xi′an Bureau Group Co.,Ltd.,Xi′an 710027,China )

Abstract:The auxiliary unit of the HXD3 locomotive is an important ventilation device for the locomotive.Due to the lack of initial maintenance capabilities,a total of 23 after-sales problems have occurred since 2019,including abnormal noise or bearing solidification,which has greatly affected the quality and schedule of locomotive maintenance.In order to avoid the same problems in the follow-up,organized technical personnel and operators to follow the maintenance procedures of the HXD3 traction fan,combined with the maintenance procedures and processes,sorted out the important quality items in the maintenance of the traction fan.After practice by field operators,the after-sales problems of the traction fan are effectively reduced,it provides a reference for other maintenance persons.

Key words:HXD3 locomotive;tractionfan;operation process;important quality items in the maintenance

0 引言

HXD3型机车共有两种通风冷却设备[1],一种是供牵引电机冷却强迫通风冷却的牵引通风机,每台牵引电机配备一台牵引通风机进行风冷。机车顶部冷空气经进风道引入到风机进口,然后轴向进入叶轮,经过叶轮加速后径向吹出[2]。第二种是供复合冷却器冷却的复合冷却器通风机。由于辅助机组通风机在机车起机后就处于连续的工作状态,机车运用中一旦发生电机轴承故障,将会导致通风机电机的烧损,从而造成机破事故[3]。

2019年至今,笔者所在车辆段共发生辅助机组售后共23次,其中电机固死发生4次,绕组接地发生2 次,风机异音13次,振动过大发生4次。为避免后续出现相同问题,组织技术人员和作业人员对辅助机组(尤其是牵引通风机)的检修进行攻关,制定了检修过程中重要的质量项点,为提升检修质量打下基础。……

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