CAJ | 학술논문

转向架作为列车走行装置，其性能直接影响着列车运行舒适性以及安全可靠性。构架作为转向架骨架，将转向架各个零部件组成一个整体，并且承受和传递各种力，因此在转向架机构中起着举足轻重的作用。对于现行CRH系列转向架构架而言，均为钢焊接结构，钢焊接结构易出现裂纹、漏焊、焊缝外观不规则等缺陷，因此对焊接构架质量检测尤为重要。本文通过对焊接表面缺陷原因分析，选取了焊接构架裂纹、漏焊、焊缝外观不规则等工件进行了焊接热应力分析验证，并提出了提高焊接构架强度的措施，对生产实际具有一定指导意义。
전향가작위열차주행장치，기성능직접영향착열차운행서괄성이급안전가고성。구가작위전향가골가，장전향가각개령부건조성일개정체，병차승수화전체각충력，인차재전향가궤구중기착거족경중적작용。대우현행CRH계렬전향가구가이언，균위강한접결구，강한접결구역출현렬문、루한、한봉외관불규칙등결함，인차대한접구가질량검측우위중요。본문통과대한접표면결함원인분석，선취료한접구가렬문、루한、한봉외관불규칙등공건진행료한접열응력분석험증，병제출료제고한접구가강도적조시，대생산실제구유일정지도의의。
The bogie was the running device of a high-speed train, its performance was with a great effect on running safety, riding comfort and stability for vehicles. Frame was the skeleton of the bogie, it assembled all parts, was used to support and bear transmission torque and load, thus it played an important role in the bogies. As for CRH1 bogie frames, the frame was with all steel welded structure, and easily producing bead cracks, leakage solder, irregular weld shapes and so on. Thus, the surface quality detection for the weld was necessary. This paper ifrstly analyzed formation reasons of fault welds, and then, adopted the work piece of class bead cracks, class leakage solder, class irregular weld shapes to test and verify welding thermal stress analysis. Finally, effective measures for frame welding strength were proposed to guide the actual production to some extent.