工程用門式起重機主要適用於公路、橋梁、電dian廠chang等deng建jian設she工gong場chang,進jin行xing一yi般ban的de裝zhuang卸xie及ji起qi重zhong搬ban運yun作zuo業ye。整zheng機ji采cai用yong桁heng架jia結jie構gou,自zi重zhong輕qing,輪lun壓ya小xiao,性xing能neng可ke靠kao。主zhu要yao采cai用yong型xing鋼gang拚pin接jie而er成cheng,從cong其qi結jie構gou上shang一yi般ban分fen為wei單dan主zhu梁liang和he雙shuang主zhu梁liang形xing式shi,起qi升sheng機ji構gou一yi般ban為wei卷juan揚yang機ji,根gen據ju其qi工gong作zuo特性,起升度和運行速度較慢,造價較低,適合工地使用。