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Sibag Cross from Siemens: Combination of tray and cross belt simplifies baggage sorting


Erlangen, Germany, At the inter airport trade show in Munich, Siemens Mobility will be presenting its brand-new “Sibag Cross” baggage sorting system. This hybrid tray solution combines the advantages of swift and sure baggage transport in trays with the space-saving method of cross-belt sorting. The possibility of same-level tray loading and unloading makes especially compact system layouts an attractive alternative. Since no electric drive has to be installed in the tray for belt movement in the case of Sibag Cross, the system stands out because of its simplicity, high reliability and low purchase price.

Tray conveyor technology is one of the most important elements of a baggage handling system for transporting bags safely and accurately at high speed. Short transfer times – an important factor in the competition among international airport hubs – require the bags to be sorted and transported over great distances as quickly as possible. In order to maintain this speed and, nevertheless, ensure gentler handling during the sorting process, Siemens Mobility has developed the Sibag Cross system. This solution is based on the proven Sibag Tray technology and differs from the previous passive solution in that it integrates an active cross-belt conveyor. The belt can be moved transversely to the direction of travel on both sides, thus enabling bags to be loaded or unloaded more easily. They can now be taken off the tray and loaded onto the tray without tilting and without the use of a top loader.The cross belt is driven purely by mechanical means. Sibag Cross does not have a motor that is integrated into the tray, which means the cross-belt tray does not have to carry any drive and corresponding power supply. This considerably reduces the level of complexity and makes the design less expensive than motorized concepts.

With Sibag Cross, the risk of bag jams is reduced substantially because bag transfer from belt to belt is much gentler than the uncontrolled falling and sliding of bags common with conventional loading and unloading methods.

The transport speed is as high as 10 m/s. With lengths of up to 1,750 mm and widths up to 1,300 mm (depending on the type of construction), oversized baggage can also be transported. This enhances the efficiency of the sorting process because these items do not have to be handled separately.

The system ensures safe transportation at all times thanks to the automatic baggage centralizing function combined with the non-slip surface of the belt. During loading, the cross belt on the tray acts as a kind of “trough” and places the bag automatically in a middle position on Sibag Cross.

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The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of production, transportation, building and lighting technologies. With integrated automation technologies as well as comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. The Sector consists of six Divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility and Osram. With around 222,000 employees worldwide Siemens Industry posted a profit of EUR3.86 billion with revenues totalling EUR38 billion in fiscal year 2008 (ended September 30).

The Mobility Division (Erlangen, Germany) is the internationally leading provider of transportation and logistics solutions. With its “Complete mobility” approach, the Division is focused on networking the various modes of transportation in order to ensure the efficient transport of people and goods. “Complete mobility” combines the company’s competence in operations control systems for railways and traffic control systems for roadways together with solutions for airport logistics, postal automation, traction power supplies and rolling stock for mass transit, regional and mainline services, turnkey systems as well as forward-looking service concepts.


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