With cable trolleys, the cables hang unprotected on cranes in wind and weather. The cables themselves and the cable trolleys are exposed to varying temperatures as well as sand and salt (at outdoor facilities). The wind often lets the cables get tangled, which quickly results in downtime. igus offers a reliable and modular alternative to cable trolley systems on cranes, which helps you save cable length and avoid downtime. Energy, data, fibre optics, oil and air are safely managed in one system. More than 1,300 STS and over 6,500 RTG/RMG ASC cranes have been fitted with energy chains.
In this white paper, you can find the following topics:
In the solution with energy chains, the cables are fed into the e-chain in the middle of the travel. The e-chain is pushed or pulled halfway.
In a cable trolley system, the cables are attached at the end of the travel and the cable loops are pulled all the way by the trolley.
Very high stability. High tensile stability (20% higher tensile strength than in 4040 series). Standard for long travels.
Travels of more than 1,000m. Speeds of more than 5m/s. Low vibration and noise thanks to split profile roller
Defects are detected before they occur, unscheduled downtime and failures are avoided.
Designed for use in energy chains. Numerous types of cable with different approvals and certificates of conformity.
On 441 metres travel with a max. acceleration of 01m/sec², a motor cable drum and thus slip rings were used for the main power and data supply. Due to the high maintenance requirements, the operator opted for a new roller energy chain and fail-safe chainflex cables. This arrangement is not only simpler, safer and more secure than the motorised cable drum previously used, it also facilitates the supply of data via fibre optic cables.
This STS application is exposed to strong wind and consequently requires an energy supply that reliably withstands such conditions. For the customer, it was important that the cables were safely and securely guided in a controlled manner at all times, despite the double boom pivot point. igus designed and tested a customised solution that was subsequently installed together with the crane manufacturer: now, a P4 energy supply and a range of chainflex cables from igus are in use; these guide cables at a speed of up to 240m/min. over a travel of 117 metres.
With this RTG crane, the e-chain system from igus has been working trouble-free for more than 10 years, without even one component of the energy chain having to be replaced. With a travel of 19.2m and a speed of 70m/min and an acceleration of 0.7m/sec², the system keeps its promises: reliable cable guidance. The energy chain guides a range of chainflex cables which were developed specifically for moving applications.