流動式起重機中,大部分輪胎起重機、lvdaiqizhongjiyijibufenqicheqizhongjihezhuanyongliudongshiqizhongji,douanzhuangyouhengjiabi,bingliyongqidingduandehualunzutongguoqishengzhuangzhilaigaibianqishenggangsishengdeweizhi,congershixianzhongwudeshengjiang;再zai通tong過guo改gai變bian桁heng架jia臂bi的de長chang度du和he傾qing斜xie角jiao度du來lai改gai變bian其qi提ti升sheng高gao度du和he工gong作zuo半ban徑jing。因yin此ci,保bao持chi桁heng架jia臂bi的de完wan好hao是shi非fei常chang重zhong要yao的de。因yin為wei起qi重zhong機ji升sheng降jiang重zhong物wu作zuo業ye內nei容rong的de多duo樣yang性xing和he各ge式shi各ge樣yang的de作zuo業ye環huan境jing,以yi及ji起qi重zhong機ji駕jia駛shi員yuan操cao作zuo水shui平ping的de高gao低di等deng原yuan因yin(有的還違規操作),這些都會造成桁架臂不同程度的損傷,甚至折臂或人員傷亡。
在桁架臂鋼管上特別是在焊接處,很容易出現裂紋;zheyaozaixidizhakan,biyaoshiyingyongfangdajingzaixiguancha。genjuwomenduoniandejingyan,zaihankouchudeliewenhenxiaoshi,jiuyaojinxingdingqigenzongjianzha,miqiezhushiliewendefazhanbianhua,yibianjishicaiqucuoshi。dangliewendekuandudadao1mm以上時,就應及時補焊。具體的方法是,先對裂紋處的原焊口進行打磨,去掉多少則視具體情況而定;然後進行補焊;最後整修好即可。
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