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A Rail Mounted Container Gantry (RMG) crane is a large crane, widely used in open areas such as large-tonnage docks, heavy cargo and container berths, front loading and unloading of ships and cargo loading and unloading, transportation, and front-yard stacking operations. These cranes operate on fixed rail tracks, allowing them to move horizontally over a stack of containers and handle heavy, repetitive lifting tasks efficiently.
Rail Mounted Gantry cranes are built for high-load handling capacity, capable of lifting multiple containers simultaneously. These cranes move along fixed rails installed on the ground, covering large areas of container yards and rail terminals. They operate with a high degree of precision and speed, making them crucial for container storage, loading, and unloading.
|
Lifting speed Trolley speed Crane speed Container |
||||
|
Capacity (t) |
30 |
35 |
45 |
50 |
|
Span (m) |
18~35 |
18~35 |
18~35 |
18~35 |
|
Lifting speed(m/min) |
12.5 |
9.5 |
9.8 |
9.2 |
|
Lifting height (m) |
12.3~21 |
12.3~21 |
12.3~21 |
12.3~21 |
|
Trolley speed(m/min) |
0-20 |
0-20 |
0-20 |
0-20 |
|
Crane speed |
0-30 |
0-30 |
0-30 |
0-30 |
|
(m/min) |
A6-A8 |
A6-A8 |
A6-A8 |
A6-A8 |
|
Work duty |
QU80 |
QU80/QU100 |
QU100/QU120 |
QU100/QU120 |
Gantry Structure: The main frame of the crane, usually made of high-strength steel, which includes the legs and cross girders. It supports the trolley and hoist systems.
Rails: Rails are installed on the ground parallel to the stacking lanes, guiding the gantry crane's movements along the storage area.
Trolley: The trolley is mounted on rails on the gantry and can move horizontally across the crane’s span. It houses the hoist system and carries the spreader for lifting containers.
Hoist Mechanism: The hoist mechanism, typically motorized, raises and lowers the spreader and the load. It provides the vertical movement necessary for handling containers.
Spreader: The spreader is an adjustable frame attached to the hoist, used for gripping and lifting containers. It locks onto the corners of containers to secure them during lifting.
Cabin: The operator's cabin is usually mounted at a high vantage point on the gantry, giving the operator a clear view of the container stacking area.
1 High Efficiency: RMG cranes offer fast and precise handling of containers, which is essential for high-throughput environments like ports and terminals.
2 Stability and Precision: The rail-mounted design ensures stable and accurate movement, reducing the risk of accidents and damage to containers.
3 Environmentally Friendly: Being electrically powered, RMG cranes produce lower emissions compared to diesel-powered equipment, contributing to greener port operations.
4 Automated Operations: Many modern RMG cranes feature automation and remote operation capabilities, reducing labor costs and increasing safety.
1 Port and Container Terminals: RMG cranes are primarily used in ports and container terminals for loading and unloading shipping containers from ships to the dock and vice versa.
2 Rail Yards: They are also used in rail yards to transfer containers between railcars and trucks, facilitating intermodal transportation.
3 Storage Yards: In large storage facilities, RMG cranes manage the stacking and retrieval of containers, optimizing the use of space and improving operational efficiency.
