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橋式起重機，是一種類型xing的de起qi重zhong機ji在zai工gong業ye環huan境jing中zhong。高gao架jia起qi重zhong機ji由you平ping行xing的de跑pao道dao組zu成cheng，行xing進jin橋qiao橫heng跨kua該gai間jian隙xi。一yi個ge葫hu蘆lu，起qi重zhong機ji的de起qi重zhong部bu件jian，沿yan著zhe橋qiao行xing駛shi。如ru果guo橋qiao在zai地di麵mian上shang固gu定ding在zai固gu定ding導dao軌gui上shang的de兩liang個ge或huo多duo個ge支zhi腿tui上shang受shou到dao剛gang性xing支zhi撐cheng，則ze該gai起qi重zhong機ji稱cheng為wei龍門起重機或巨人起重機。
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幾ji乎hu所suo有you造zao紙zhi廠chang都dou使shi用yong橋qiao式shi起qi重zhong機ji進jin行xing定ding期qi維wei護hu，需xu要yao拆chai除chu重zhong型xing壓ya榨zha輥gun和he其qi他ta設she備bei。橋qiao式shi起qi重zhong機ji用yong於yu造zao紙zhi機ji的de初chu始shi構gou造zao，因yin為wei它ta們men使shi安an裝zhuang重zhong型xing鑄zhu鐵tie紙zhi製zhi幹gan燥zao鼓gu和he其qi他ta大da型xing設she備bei（某些重達70噸）更加容易。