起重运输机械
起重運輸機械
기중운수궤계
HOISTING AND CONVEYING MACHINERY
2014年
8期
116-118
,共3页
门式起重机%应力测试%腹板加高
門式起重機%應力測試%腹闆加高
문식기중궤%응력측시%복판가고
gantry crane%stress test%heightening web
在铁路货场使用10 a的MQ门式起重机对腹板进行了加高，以便增加额定载荷；而后又服役了10 a，对静、动态应力测试进行分析，得知额定载荷下最大静应力出现在南梁右侧悬臂根部；经改造后的主梁仍具有理想的强度储备，仍能满足额载的工况需求；南梁跨中右侧1/4跨下盖板连接焊缝处动态响应最敏感，应引起重视，需定期检查。
在鐵路貨場使用10 a的MQ門式起重機對腹闆進行瞭加高，以便增加額定載荷；而後又服役瞭10 a，對靜、動態應力測試進行分析，得知額定載荷下最大靜應力齣現在南樑右側懸臂根部；經改造後的主樑仍具有理想的彊度儲備，仍能滿足額載的工況需求；南樑跨中右側1/4跨下蓋闆連接銲縫處動態響應最敏感，應引起重視，需定期檢查。
재철로화장사용10 a적MQ문식기중궤대복판진행료가고，이편증가액정재하；이후우복역료10 a，대정、동태응력측시진행분석，득지액정재하하최대정응력출현재남량우측현비근부；경개조후적주량잉구유이상적강도저비，잉능만족액재적공황수구；남량과중우측1/4과하개판련접한봉처동태향응최민감，응인기중시，수정기검사。
The 1 0a MQ gantry crane is used to heighten the web on the railway goods yard to increase the rated load;then 1 0a gantry crane is put into service again for analysis of static and dynamic test,to work out that the maximum static stress under rated load is at the root of cantilever on the right side of the southern beam;the reconstructed main beam still has ideal strength margin,able to meet the working demand for rated load;the dynamic response at the attachment weld of cover plate on the right side of 1/4 mid-span of south beam is most sensitive,which shall be brought to the forefront,requi-ring regular inspection.
