中、小型橋式(shi)起(qi)重(zhong)(zhong)(zhong)機(ji)較多采用制動(dong)器、減速(su)器和(he)電動(dong)機(ji)組(zu)合成一體的(de)(de)“三合一”驅(qu)動(dong)方式(shi)，大起(qi)重(zhong)(zhong)(zhong)量(liang)的(de)(de)普通橋式(shi)起(qi)重(zhong)(zhong)(zhong)機(ji)為(wei)便于(yu)安裝和(he)調整(zheng)，輕小型起(qi)重(zhong)(zhong)(zhong)設備，驅(qu)動(dong)裝置常采用萬向聯軸器。塔式(shi)起(qi)重(zhong)(zhong)(zhong)機(ji)簡(jian)稱塔機(ji)，亦(yi)稱塔吊，起(qi)源于(yu)西(xi)歐。塔式(shi)起(qi)重(zhong)(zhong)(zhong)機(ji)由金屬(shu)結(jie)構、工作機(ji)構和(he)電氣系統三部(bu)分組(zu)成，動(dong)臂裝在高聳塔身上部(bu)的(de)(de)旋轉起(qi)重(zhong)(zhong)(zhong)機(ji)。持有崗(gang)位證(zheng)書的(de)(de)施(shi)工現場管理人員(yuan)不(bu)少(shao)于(yu)3人，且安全(quan)員(yuan)、機(ji)械員(yuan)等人員(yuan)齊(qi)全(quan)。技術負責人主持完成過本類別資質二級(ji)以(yi)上標(biao)準要求的(de)(de)工程(cheng)業績不(bu)少(shao)于(yu)2 項。

企業(ye)工(gong)(gong)程(cheng)業(ye)績：近 5 年承(cheng)擔過(guo)下(xia)列 2 類(lei)中的(de) 1 類(lei)工(gong)(gong)程(cheng)，小型起(qi)重(zhong)設備，工(gong)(gong)程(cheng)質量合格。（1）累(lei)計安(an)裝(zhuang)拆(chai)卸(xie)(xie) 1600 千(qian)牛·米以上(shang)塔式起(qi)重(zhong)機(ji)8 臺(tai)次；（2）累(lei)計安(an)裝(zhuang)拆(chai)卸(xie)(xie) 100 噸以上(shang)門式起(qi)重(zhong)機(ji) 8 臺(tai)次。三級(ji)資質可承(cheng)擔 800 千(qian)牛·米以下(xia)塔式起(qi)重(zhong)機(ji)、各類(lei)施工(gong)(gong)升(sheng)降(jiang)機(ji)和門式起(qi)重(zhong)機(ji)的(de)安(an)裝(zhuang)與拆(chai)卸(xie)(xie)。建筑(zhu)施工(gong)(gong)特種作(zuo)業(ye)人員是指(zhi)在房屋(wu)建筑(zhu)和市(shi)政工(gong)(gong)程(cheng)施工(gong)(gong)活動中，從事(shi)起(qi)重(zhong)機(ji)械(xie)作(zuo)業(ye)的(de)人員。經考(kao)核或(huo)培訓合格的(de)工(gong)(gong)人不少(shao)于(yu)10 人，長治(zhi)起(qi)重(zhong)設備，其中起(qi)重(zhong)信號司索工(gong)(gong)不少(shao)于(yu)2 人、建筑(zhu)起(qi)重(zhong)機(ji)械(xie)安(an)裝(zhuang)拆(chai)卸(xie)(xie)工(gong)(gong)不少(shao)于(yu)6 人、電工(gong)(gong)不少(shao)于(yu)1人。

一級：企(qi)業資(zi)(zi)(zi)產(chan)(chan)：凈資(zi)(zi)(zi)產(chan)(chan) 800 萬(wan)(wan)元(yuan)以(yi)上。企(qi)業主(zhu)要(yao)人員(yuan)：技(ji)術負責(ze)人具(ju)有 10 年以(yi)上從事工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)施工(gong)(gong)技(ji)術管理(li)工(gong)(gong)作經歷，且具(ju)有工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)序列(lie)職稱。申報(bao)起(qi)重(zhong)設備安(an)裝(zhuang)工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)三級資(zi)(zi)(zi)質需要(yao)滿(man)足以(yi)下條件：企(qi)業資(zi)(zi)(zi)產(chan)(chan)：凈資(zi)(zi)(zi)產(chan)(chan)150 萬(wan)(wan)元(yuan)以(yi)上。三級資(zi)(zi)(zi)質可承包的工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)范圍：可承擔800 千牛·米以(yi)下塔式(shi)起(qi)重(zhong)機、各(ge)類施工(gong)(gong)升降(jiang)機和門(men)式(shi)起(qi)重(zhong)機的安(an)裝(zhuang)與拆卸。二級：企(qi)業資(zi)(zi)(zi)產(chan)(chan)：凈資(zi)(zi)(zi)產(chan)(chan) 400 萬(wan)(wan)元(yuan)以(yi)上。企(qi)業主(zhu)要(yao)人員(yuan)：技(ji)術負責(ze)人具(ju)有 8 年以(yi)上從事工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)施工(gong)(gong)技(ji)術管理(li)工(gong)(gong)作經歷，且具(ju)有工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)序列(lie)中級以(yi)上職稱；