起(qi)(qi)(qi)步起(qi)(qi)(qi)重(zhong)(zhong)機(ji)對房屋(wu)建造的(de)重(zhong)(zhong)要(yao)性不言而喻，它(ta)是(shi)房屋(wu)建設的(de)過程中不可或(huo)缺的(de)部(bu)分，因此，安(an)裝或(huo)拆卸起(qi)(qi)(qi)重(zhong)(zhong)機(ji)也(ye)需(xu)要(yao)有(you)(you)資(zi)質才能進行的(de)。塔(ta)(ta)式(shi)起(qi)(qi)(qi)重(zhong)(zhong)機(ji)簡稱(cheng)(cheng)塔(ta)(ta)機(ji)，亦稱(cheng)(cheng)塔(ta)(ta)吊，起(qi)(qi)(qi)源(yuan)于(yu)西歐。塔(ta)(ta)式(shi)起(qi)(qi)(qi)重(zhong)(zhong)機(ji)由(you)金屬結構、工作機(ji)構和電氣系(xi)統三部(bu)分組成，小型起(qi)(qi)(qi)重(zhong)(zhong)設備，動(dong)臂裝在(zai)高聳塔(ta)(ta)身上部(bu)的(de)旋(xuan)轉起(qi)(qi)(qi)重(zhong)(zhong)機(ji)。建筑企業想要(yao)承接工程，擁(yong)有(you)(you)資(zi)質是(shi)其前提條件。新辦(ban)企業想要(yao)申(shen)辦(ban)資(zi)質需(xu)要(yao)從(cong)等級(ji)開始(shi)，故企業想要(yao)申(shen)報起(qi)(qi)(qi)重(zhong)(zhong)設備安(an)裝需(xu)要(yao)從(cong)其低級(ji)三級(ji)資(zi)質開始(shi)申(shen)報起(qi)(qi)(qi)，

城(cheng)市(shi)化的速度(du)越(yue)來越(yue)快，房子越(yue)建(jian)(jian)(jian)越(yue)多(duo)，而無論(lun)多(duo)美的建(jian)(jian)(jian)筑，都(dou)少不了(le)起(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)的身影。起(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)是(shi)指(zhi)在一定范圍內垂直提升(sheng)和水平(ping)搬運(yun)重(zhong)(zhong)(zhong)物的多(duo)動作起(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)械。又稱天(tian)車(che)，航吊，吊車(che)。工(gong)種有建(jian)(jian)(jian)筑起(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)械司機(ji)(ji)(ji)（T/S/W）、建(jian)(jian)(jian)筑起(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)械安(an)裝(zhuang)拆卸工(gong)（T/S/W）、建(jian)(jian)(jian)筑起(qi)重(zhong)(zhong)(zhong)信號司索(suo)工(gong)這幾(ji)種。其(qi)中，起(qi)重(zhong)(zhong)(zhong)設備(bei)廠(chang)，T是(shi)指(zhi)塔式(shi)起(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)；S是(shi)指(zhi)施(shi)工(gong)升(sheng)降機(ji)(ji)(ji)；W是(shi)指(zhi)物料提升(sheng)機(ji)(ji)(ji)。對(dui)鋼結構的銹蝕(shi)、磨(mo)損、裂紋、變形等損傷情況進行(xing)檢查(cha)和測量，并按規定對(dui)整(zheng)機(ji)(ji)(ji)性能進行(xing)荷載試驗，南平(ping)起(qi)重(zhong)(zhong)(zhong)設備(bei)，由(you)此分析判斷出安(an)全度(du)，做出合(he)格或不合(he)格結論(lun)的活動。

中、小型橋(qiao)式(shi)起重(zhong)(zhong)機較多(duo)采用(yong)制動器(qi)、減速器(qi)和(he)電動機組合成一(yi)體的“三合一(yi)”驅動方式(shi)，大起重(zhong)(zhong)量(liang)的普通(tong)橋(qiao)式(shi)起重(zhong)(zhong)機為便(bian)于安(an)裝和(he)調整(zheng)，驅動裝置常采用(yong)萬向聯軸器(qi)。一(yi)級資質可(ke)承擔(dan)塔式(shi)起重(zhong)(zhong)機、各(ge)(ge)類(lei)施(shi)(shi)工升(sheng)(sheng)降機和(he)門(men)(men)式(shi)起重(zhong)(zhong)機的安(an)裝與拆(chai)卸。二(er)級資質可(ke)承擔(dan) 3150 千(qian)牛·米(mi)以(yi)下塔式(shi)起重(zhong)(zhong)機、各(ge)(ge)類(lei)施(shi)(shi)工升(sheng)(sheng)降機和(he)門(men)(men)式(shi)起重(zhong)(zhong)機的安(an)裝與拆(chai)卸。三級：企業(ye)(ye)資產(chan)：凈資產(chan) 150 萬元以(yi)上。企業(ye)(ye)主(zhu)人員：技術負責人主(zhu)持完成過本(ben)類(lei)別資質二(er)級以(yi)上標準要(yao)求的工程業(ye)(ye)績(ji)不少(shao)于 2 項(xiang)。