轨道式龙门起重机，又称 RMG 起重机，是各行各业中用于高效物料搬运的必备设备。这些起重机通常用于港口、联运码头和制造工厂。

The gantry crane is a bridge-type crane in which the horizontal bridge is set on two legs to form a gantry shape. This kind of crane operates on above-ground rails and is mainly used for transportation and installation operations in open storage yards, shipyards, power stations, ports and railway cargo stations.

该类龙门起重机主要用于预制厂的梁体起重、桥梁运输及桥梁架设任务，并配有专用吊具。

自动化轨道龙门起重机是由许多零部件组成的，使用这些零部件需要组装成成品。