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Launching P4HD.56.R – a new heavy-duty energy chain

Launching P4HD.56.R – a new heavy-duty energy chain

September 20, 2022 5:27 pm

The new heavy-duty energy chain P4HD.56.R is suitable for long travels, high speeds, heavy cable loads and Industry 4.0.

Container cranes in ports worldwide will be even more powerful and fail-safe in the future. This is because igus is launching P4HD.56.R – a new heavy-duty energy chain prepared for long travels, high speeds, heavy cable loads and Industry 4.0.

If your waistline expands, you need a new pair of trousers. Something similar is happening in ports around the world. Modern containerships are enormous – take the Ever Ace, which is 400m long, an62m wide and loads almost 24,000 containers. The new trousers in our comparison are a larger ship-to-shore (STS) crane that loads and unloads the containers. This enlargement also affects the energy chains that guide the energy and data cables for the crane trolley on the crane bridge. They have to withstand unprecedented loads: travels of over 130m, cable weights of up to 10kg/m (over 20kg/m for motor-driven trolleys) and accelerations of more than 1m/sec2 are standard for Triple E-class STS cranes.

In other applications, travel distances of several hundred meters, cable loads of up to 50kg/m and accelerations of 8m/sec2 and more can be achieved. Theo Diehl, Industry Manager for Cranes
at igus, said, “We have developed the new P4HD.56.R heavy-duty energy chain for these extreme requirements. Thanks to its sensor technology, the energy chain is particularly robust and prepared for Industry 4.0 trends, such as predictive maintenance. This combination significantly increases STS crane reliability.”

A heavy-duty energy chain is to run trouble-free for up to 15 years.

The engineers have developed special design features to achieve a long service life in STS cranes under high loads. “A special fork-tab principle ensures even greater stability at higher additional loads, while a pin/bore connection made of tri-biologically optimised plastic minimises wear,” says Diehl. Furthermore, rollers are mounted in the inner radius of the chain links. If the e-chain folds, the upper run rolls on the lower run instead of sliding. Thanks to the low coefficient of friction, payload and acceleration can be increased without changing the push/pull force.

Long-term tests in igus’s in-house laboratory prove that P4HD.56.R, the heavy-duty design, achieves a 50 percent longer service life than the normal P41.56R variant. “Our goal is for the e-chain systems to run on any STS crane for up to 15 years – trouble-free and with minimal maintenance,” says Diehl. A nice side effect: the rolling movement reduces the required drive energy by 57 percent. This is another advantage in times of rising energy prices. Since crane systems also require robust cables that can be used to realise long travels with high dynamics, igus also offers CFCRANE. This chainflex cable range has been specifically developed for crane applications.

Fit for Industry 4.0

But the new P4HD.56.R is not only robust, durable and energy saving. The heavy-duty energy chain is also suitable for Industry 4.0. For example, it allows predictive maintenance with the help of i.Sense monitoring sensors, the chain link status can be continuously transmitted to the i.Cee:plus communication module. i.Cee allows usage-based and condition-based maintenance, extending inspection intervals. Maintenance is necessary only when the system sends a signal to that effect. Operators of STS cranes can use the i.Cee system to greatly increase system availability and extend energy chain service life. Holiday shut-downs and other planned downtimes are automatically taken into account in the i.Cee service life calculation and the forecast is constantly checked with sensors. All these advantages do not limit usable inner width because the condition sensors and their electronics are integrated into the rol e-chain links to save space. No additional cables are necessary because data is transmitted via radio. Theo Diehl says, “The new P4HD.56.R-series e-chains thus meet all the requirements that apply to STS cranes of the next generation and the generation after that.”

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