Lifting bridge in video
Energy supply: Heavy bridge lifted easily
A pre-assembled e-chain system from Igus provides a fail-safe energy supply at the Memorial Bridge in New Hampshire. A video shows how the readychains support the vertical lifting mechanism.
The Memorial Bridge spans the Piscataqua River on the US east coast between Portsmouth in New Hampshire and Kittery in Maine. It replaced the original bridge, which was built in 1923 to commemorate the sailors and soldiers who died in the First World War. Pre-assembled energy chains from Igus ensure a safe energy supply in the lifting bridge.
In order for ships to pass under the Memorial Bridge, it must be lifted by means of a vertical lifting mechanism. This requires an average speed of one for a total distance of 40 meters. In order to reduce the general maintenance effort and increase reliability, the bridge builders used pre-assembled readychains from Igus instead of the suspended cables from the original design. The cables, pre-assembled with connectors and used in energy chains, were pre-assembled in the nearby Igus factory and delivered and installed directly on site as ready-to-install systems.
The technicians used highly flexible Chainflex cables in the E4 energy chain and heavy-duty CFXL strain relief clamps for easy access. Each type of cable installed - including the CF300, CF9 and CF34 motor cable and the 4-core CFLG fiber optic cable - was tested extensively in the 2,750-square-foot test lab. As a result, Igus is able to offer a 36-month guarantee on its Chainflex cables. as
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