門式(shi)起(qi)重(zhong)機是橋式(shi)起(qi)重(zhong)機的一種變形，又(you)叫龍門吊。主(zhu)(zhu)要(yao)用(yong)于(yu)室外的貨(huo)場、料(liao)場貨(huo)、散(san)貨(huo)的裝(zhuang)卸作業，具有場地(di)利用(yong)率高、作業范圍(wei)大、適應面廣、通用(yong)性強等特點。太重(zhong)生產的門式(shi)起(qi)重(zhong)機，主(zhu)(zhu)要(yao)包(bao)含：通用(yong)門式(shi)起(qi)重(zhong)機、水(shui)電站(zhan)門式(shi)起(qi)重(zhong)機等。