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요약정보
动车组停放制动故障原因分析及改进措施 / Cause Analysis and Improvement Measures of EMU Parking Brake Failure
Resource Type
Academic Journal
Authors
高靖添
;
马永靖
;
孟繁辉
;
张笑凡
;
李松
;
王雯
;
杨洋
;
GAO Jingtian
;
MA Yongjing
;
MENG Fanhui
;
ZHANG Xiaofan
;
LI Song
;
WANG Wen
;
YANG Yang
Source
城市轨道交通研究 / Urban Mass Transit
. 26(4):78-81
Subject
动车组
停放制动故障
双脉冲电磁阀
Language
Chinese
ISSN
1007-869X
Online Access
Find it @ DONGA
초록
动车组偶发停放制动无法正常施加的故障,给停放在坡道上的动车组带来溜车的安全隐患.阐述了停放制动控制原理和双脉冲电磁阀工作原理,判断出动车组停放制动无法正常施加故障是由双脉电磁阀卡滞导致的.通过对电磁阀进行拆解分析进而推断,阀杆(柱塞)密封件滑动到铜套导气孔附近是导致双脉冲电磁阀卡滞情况发生的原因.原因分析结果表明,采用倒角去毛刺工艺的铜套导气孔不够光滑,使密封件滑动到铜套导气孔附近发生卡滞,密封失效,进而导致双脉冲电磁阀无法正常施加停放制动.由此提出两项改进措施:铜套导气孔采用研磨抛光去毛刺工艺,将阀杆中间两处K形圈更改为O形圈,并配合O形圈对阀杆局部结构进行适应性调整;对双脉冲电磁阀阀杆密封件的润滑脂用量进行定量控制.针对改进措施,定制双脉冲电磁阀试验样件,在疲劳试验后进行故障重现试验,试验结果验证了改进措施的有效性.
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