Cranes play a crucial role in many industrial operations, enabling efficient and safe handling of heavy loads. Among the different types of cranes available, double-girder overhead cranes and gantry cranes are two popular choices. However, while both cranes are used to lift and move heavy loads, their design, applications, and features differ. This article will explore double girder overhead and gantry cranes to help you understand their differences.
Double Girder Overhead Cranes
As the name suggests, a double girder overhead crane has two girders that run parallel to each other on top of the support structure. The rafters are connected to end trucks that move along the length of the crane’s runway. The hoist, which carries the load, is suspended from the rafters and can move horizontally along the length of the crane. Double girder overhead cranes sydney are typically used for lifting and moving heavy loads that require high lifting capacities, long spans, and high lifting heights.
One of the main advantages of double-girder overhead cranes is their ability to handle heavy loads efficiently. They can lift loads ranging from a few to several hundred tons, making them ideal for steel, construction, and manufacturing industries. In addition, the double girder design provides excellent stability and rigidity, allowing the crane to handle off-centre loads without swaying or tipping. They also offer a wide range of options for customisation, including variable speed controls, anti-sway systems, and remote control operations.
Gantry Cranes
A gantry crane, also known as a portal crane, has a similar design to a double girder overhead crane with two parallel girders. However, instead of being mounted on a fixed structure, a gantry crane melbourne is mounted on a mobile frame or legs that straddle the workspace. The hoist, which carries the load, moves horizontally along the rafters, while the entire crane can move along the rails or tracks.
Gantry cranes are used in outdoor applications, such as ports, shipyards, and construction sites, where the load needs to be moved over a large area. They are ideal for lifting and moving heavy loads in open spaces without overhead obstacles. In addition, gantry cranes can be customised to meet specific requirements, such as a cantilevered extension for reaching over obstacles or a rotating trolley for precise load placement.
Differences between Double Girder Overhead Cranes and Gantry Cranes
While double-girder overhead and gantry cranes share some similarities in design and function, they differ in several key aspects. Here are some of the main differences between the two types of cranes:
- Support Structure: Double girder overhead cranes are mounted on a fixed support structure, while gantry cranes are mounted on a mobile frame or legs that straddle the workspace.
- Workspace: Double girder overhead cranes are suitable for indoor applications, while gantry cranes are typically used outdoors.
- Capacity: Double girder overhead cranes have a higher lifting capacity than gantry cranes, making them suitable for heavy-duty lifting operations.
- Span: Double girder overhead cranes can cover longer spans than gantry cranes, making them ideal for large indoor spaces.
- Mobility: Gantry cranes offer greater mobility and flexibility than double girder overhead cranes, allowing them to move around the workspace and access hard-to-reach areas.
Conclusion
In conclusion, double girder overhead cranes and gantry cranes are two popular types of cranes used in a wide range of industries for lifting and moving heavy loads. While both types of cranes have similar designs and functions, their support structure, workspace, capacity, span, and mobility differ. Understanding the differences between the two types of cranes can help you choose the right one for your specific application, whether you need one for indoor or outdoor use, heavy-duty lifting or long-span operations, or high mobility or stability. By selecting the appropriate crane for your needs, you can improve your operations’ efficiency, safety, and productivity and reduce the risk of accidents, downtime, and damage to equipment and materials.