Solution
Today, an extremely robust polymer chain from igus GmbH, Cologne, is used to safely guide the hoses of the system over the entire travel. This is the maintenance-free
E4.350 model that is openable from both sides and is part of the exceptionally robust
E4.1 series that has proven itself in countless applications. It also shows its versatility in composting and sewage treatment plants, tooling and construction machinery, crane technology and wood processing.
The E4.350 with an inner height of 350mm and inner widths of up to 800mm is the largest polymer energy chain in the world to date. In the most demanding "heavy duty" applications, it can easily guide heavy and, if required, stiff loads and is sometimes highly wear-resistant, corrosion-resistant and resistant to oil and seawater. In order to minimise the rolling resistance, sliding rollers made of the tribo-optimised plain bearing material iglidur, which displays its strength in the most diverse applications, prove themselves as a special design on the crossbars. The friction of the hose in the chain is significantly reduced and stability is guaranteed.
In addition to the energy supply system, a corrosion-resistant guide trough and floating moving ends are used. They serve to compensate for any lateral offset tolerances. The energy chain filled with hoses and cables is always safely guided along its entire length in wind and weather. Despite the difficult operating and environmental conditions, there have been no failures so far.
For reasons of operational safety of the bridge construction, the system builder also decided to invest in an electronic monitoring unit. The
diagnostic tool PPDS (Push/Pull Detection System), which is especially useful on long travels, measures the pull/push forces of the energy chain online every four seconds and compares them with a calculated target specification. If malfunctions occur, the system can be stopped automatically with the help of the diagnostic tool in order to prevent damage.