Container cranes are large lifting devices used to move containers in ports and construction sites. They come in different designs and use a hoist that travels along an overhead beam. The operator sits in a cabin above the hoist and must undergo training and certification.
A container crane is a very large lifting device used to lift containers. These cranes can be used to load or unload containers from a ship or simply move them around a port or construction site. Container cranes serve as a type of gantry crane, which is a form of crane with a hoist that travels along an overhead girder. Compared to smaller construction cranes, a container crane is usually stationary or stationary in one permanent location. These machines are extremely large and powerful and typically require extensive training and care to ensure they are used safely.
Depending on where it will be used, a container crane can come in different designs and profiles. Full trestle units straddle a canal or body of water and lift containers when the vessel is positioned underneath. Half-gantry units are much more common and extend beyond the water’s edge into a deep harbor or port. High-profile units feature a hinged arm that can lift containers up and over the vessel and onto the shoe. The low-profile units swing to move these containers without lifting them to extreme heights.
Each container crane features a steel frame with a lifting mechanism installed along an overhead beam. The hoist travels back and forth along the beam as needed to access containers in different parts of the ship or yard. A spreading device hangs from the hoist by steel cables. This spreader features latching mechanisms that lock onto each corner of the container to hold it securely while being moved. Many containers include integral corner castings or cutouts designed to accept hooks on a standard spreader.
A container crane can rely on several operating systems to provide the power and force needed to lift these containers. Some use a hydraulic lift mechanism, while others use an electric or hybrid motor. Each crane can rely on a diesel fuel generator or electricity from the shore to power its engine.
The operator of a container crane sits in a special operating cabin located above the hoist. This cab can typically travel the length of the beam so that the operator can easily position the spreader and raise or lower the bins. Many regions require these operators to undergo training and certification to ensure they are capable of operating the crane. This teaches the operator not only how to check the crane to maximize safety, but also how to inspect the crane for defects before each use.
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