Rail mounted gantry cranes are specialized machinery for loading, unloading, handling and stacking operations in container freight yards, mainly applicable to ports, wharfs, railway freight yards, warehouses, and yards. The rail container gantry crane has a large span and more stacking layers, which can make full use of the site area. Rail-type container gantry cranes have strong positioning capabilities and are relatively easy to implement fully automated loading and unloading. They are an ideal machine for automated container yards. Compared with tire-type gantry cranes, they have a simple structure, good stability, easy operation and safety, and it is easy to realize single machine automatic control. Rail-type container gantry cranes can "stack 4 through 5" or "stack 5 through 6" between two rails and outreach distances, stacking 8 to 15 rows of containers. When moving on the track, the action is accurate and there are few accidents.
