Igus is now launching the world's first innovative self driving drag chain, which is suitable for applications with long travel, high dynamics, and long running times. Due to the fact that there is almost no pushing or pulling force acting on the drag chain during operation, this self driving feature allows it to operate for longer periods of time over extremely long journeys. So, its application range is very wide, and the rail type automatic stacker crane (ASC) in ports is one of the typical applications.
Forty years ago, container ships were still very small compared to today, with an average capacity of only 1000 containers per ship. Nowadays, 3E class giant container ships can carry nearly 24000 containers, and this number is constantly increasing. Such a large volume of ships poses a huge challenge to the port, which requires continuous expansion of its infrastructure, including ASC cranes used to load containers onto trucks and trains. This huge bridge crane needs to run hundreds of meters or even more on the track. Normally, the power cable will run immediately after the ASC crane. Therefore, when the travel exceeds 1000 meters, there will be a huge push and pull force acting on the drag chain, "said J ö rg Ottersbach, head of the igus drag chain business unit." In order to avoid this high load and further optimize the service life of the energy supply system in extreme applications, we have launched the world's first self driving drag chain