What Is Double Girder Overhead Crane?

Introduction

Overhead cranes are used in various industries for lifting, loading and unloading heavy loads. These cranes are classified according to different factors such as the purpose, configuration, and capacity of the crane. In this article, we are going to focus on double girder overhead cranes.

What is a double girder overhead crane?

A double girder overhead crane is a type of crane with two parallel girders that are supported by vertical columns. The girders are placed at a specific distance from each other and connect the two end trucks that carry the crane's trolley or hoist.

Functioning of a double girder overhead crane

The double girder overhead crane operates with the help of two motors that are responsible for the movement of the hoist and the trolley. The hoist is used for lifting loads, while the trolley moves the lifted object horizontally to different locations. The trolley can move back and forth on the double girder, and the hoist moves up and down.

Advantages of a double girder overhead crane

The double girder overhead crane has numerous advantages when compared to a single girder crane.

1. Higher lift capacity: The double girder crane can lift much heavier loads than a single girder crane because it has two girders instead of one.
2. Greater span: The double girder crane has a much larger span than a single girder crane, which makes it possible to cover a larger area and lift objects from further away.
3. Better stability: Due to the presence of two girders, the double girder crane is much more stable than a single girder crane.
4. More flexibility: The double girder crane has a wider range of movement because it can move the hoist and trolley in multiple directions.
5. Reduced maintenance: The double girder crane requires less maintenance than a single girder crane because it has a higher load capacity and greater stability.

Applications of Double Girder Overhead Cranes

The double girder overhead crane has various applications in different industries.

1. Steel mills: The crane is used for the transportation and stacking of heavy steel coils and beams.
2. Construction sites: The crane is used for lifting and placing concrete blocks, beams, and other construction materials.
3. Shipping yards: The crane is used for lifting and handling containers and other heavy loads in shipping ports.
4. Power plants: The crane is used for lifting and transporting heavy equipment in power plants, such as turbines and generators.
5. Automobile industry: The crane is used for transporting car components in assembly lines.

Factors to consider when purchasing a double girder overhead crane

When purchasing a double girder overhead crane, there are several factors that you need to consider to ensure that you get the right crane for your needs.

1. The crane''s capacity: You need to consider the weight of the heaviest object that you plan to lift with the crane. The crane capacity should be at least 10-15% higher than this weight.
2. Span and lift height: You need to consider the span of the crane and the height at which you need to lift the objects. The crane''s span and lift height should be sufficient for your needs.
3. Speed and control: You need to consider the speed at which you want the crane to move and the type of control that you need.
4. Functionality and safety features: You need to consider the crane''s functionality and the safety features that it comes with. The crane should have features to prevent accidents and ensure the safety of the operator and the load.
5. Maintenance and service: You need to consider the maintenance and service requirements of the crane and ensure that it comes with an excellent warranty and after-sales service.

Conclusion

A double girder overhead crane is a reliable, versatile and cost-effective solution for lifting heavy loads in different industries. When purchasing a double girder overhead crane, it''s essential to consider factors such as the crane''s capacity, span and lift height, speed and control, functionality and safety features, and maintenance and service. Ultimately, the right double girder overhead crane will improve the efficiency and safety of your lifting operations.