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Heavy bridge raised easily with secure energy supply from igus
Technical Articles- Jan 01,19
The Memorial Bridge spans the Piscataqua River between Portsmouth, New Hampshire and Kittery, Maine on the east coast of the US. It replaced the original one, which was built in 1923 to remember local sailors and soldiers who participated in the first World War. Pre-assembled energy chains from igus reliably ensure secure energy supply in the lifting bridge.
The Memorial Bridge spans the Piscataqua River between Portsmouth, New Hampshire and Kittery, Maine on the east coast of the US. It replaced the original one, which was built in 1923 to remember local sailors and soldiers who participated in the first World War. Pre-assembled energy chains from igus reliably ensure secure energy supply in the lifting bridge.
For ships to pass under the Memorial Bridge, it must be raised by a vertical lifting mechanism. In operation an average speed of 1 m/s is required for a total distance of 40 metres. To reduce maintenance and increase overall reliability, the bridge builders used pre-assembled igus readychains instead of the hanging cables of the original design. The cables, which were harnessed with connectors and fitted in energy chains, were pre-assembled in the nearby igus factory and delivered as ready-to-install systems to be fitted on site.
The igus engineers used highly flexible chainflex cables in the E4 energy chain as well as heavy-duty CFXL clamps for secure cable strain relief. Each of the installed cable types - including the CF300, CF9 and CF34 motor cables and the 4-core CFLG fibre optic cable - were extensively tested in the 2,750 square metre test laboratory. In this way, igus is the only cable manufacturer in the world capable of providing a 36-month guarantee on its chainflex cables.
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