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(te)性(xing),起(qi)升(sheng)度(du)和(he)運(yun)行(xing)速(su)度(du)較(jiao)慢(man),造(zao)價(jia)較(jiao)低(di),適(shi)合(he)工(gong)地(di)使(shi)用(yong)。