闸调器弹簧的早期断裂失效及预防  

A Brief Analysis on Early Fracture Failure and Prevention Measures of Slack Adjuster Spring

作　　者：李晓霞[1] 潘全章[1] 陈淑梅[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081

出　　处：《铁道机车车辆》2010年第4期42-47,71,共7页Railway Locomotive & Car

摘　　要：铁路货车制动的闸瓦间隙调整是由闸瓦间隙自动调整器(以下简称闸调器)内部弹簧力的变化实现的,弹簧件的质量直接影响到闸调器的使用性能。因此,提高弹簧的质量,防止弹簧的早期失效,对于保证闸调器的使用性能和质量是十分重要的。通过对闸调器弹簧的受力分析以及闸调器弹簧早期断裂失效实例的分析,探讨闸调器弹簧断裂失效的起因,并结合实际生产加工工艺提出保证闸调器弹簧质量、预防早期断裂失效的可行措施。Brake shoe slack adjustment involved in railway wagons brake is achieved by the changing of internal spring force of automatic brake shoe slack adjuster（hereinafter referred to as slack adjuster）,thus the quality of springs will directly affect the functional performance of slack adjuster.Therefore,improving the quality and preventing the early failure of spring become quite important for ensuring the slack adjuster＇s functional performance and quality.This paper explores the causes of slack adjuster spring fracture through analysis on slack adjuster spring force as well as spring early fracture failure examples,and then put forward some feasible measures related to actual production process to ensure slack adjuster＇s quality and prevent early fracture failures.

关 键 词：弹簧 断裂失效 氢脆 预防 

分 类 号：U272.351[机械工程—车辆工程]