Geared Motors Ensure Quick Turnaround at Frankfurt’s Hub Airport

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Baggage handling system

Motors & Drives

The multi-storey luggage storage facility is completely automated and linked to the transport architecture
The multi-storey luggage storage facility is completely automated and linked to the transport architecture
Whether on a belt or roller conveyor, the modular and interchangeable drives guarantee high operational availability over a long service life, practically no need for maintenance, easy accessibility, and minimum replacement effort
Whether on a belt or roller conveyor, the modular and interchangeable drives guarantee high operational availability over a long service life, practically no need for maintenance, easy accessibility, and minimum replacement effort
Height differences are easily bridged so the conveyor system can actually integrate all areas of the four-storey pier
Height differences are easily bridged so the conveyor system can actually integrate all areas of the four-storey pier

Frankfurt Airport is expecting a steep rise in the volume of both freight and passenger traffic. Accordingly, the capacity is being enlarged. The new northwest runway has just become operational, a new terminal is in the planning stage, and the new A-Plus pier will shortly be opened - increasing the number of A380 megaliners that can be processed simultaneously. In order to keep the luggage loading time under 45 minutes even in the face of more air traffic and tightened security measures, efficient and highly reliable handling technology is required. The extensive baggage handling system at the new pier, supplied by the Beumer Group, is driven by geared motors from Nord Drivesystems.

 

Until now, only a limited number of wide-bodied aircraft have been used internationally, but they have been established as a ground-breaking innovation in civil aviation. A380s offer more seating and cargo space than any other commercial aircraft, and they perfectly suit long-distance flights. They will therefore be the transport method of choice in the future. Airports with the necessary infrastructure in place will clearly hold the advantage.

Fast baggage handling facility for terminal expansion
The new A-Plus pier increases the number of wide-bodied aircraft Frankfurt Airport can serve simultaneously by 7 to 17. Alternatively, it provides enough space for processing several smaller aircraft. The intralogistics supplier Beumer has constructed the new luggage conveyor system which is more than seven kilometers long. The conveyor transport technology must not only be 100 % available, it must also be capable of reliably taking the pieces of luggage to the correct destination in less than 45 minutes. Nord Drivesystems has installed over 1,700 geared motors in the extensive system with nearly 2,000 conveyor elements and over 100 junctions. Working together with the operator Fraport AG and Beumer, the drive manufacturer has optimized the drives for reliable and energy-saving operation. The engineering calculations were verified through measurements taken at the facility. Due to the new design and construction, smaller drives can be used at many points, leading to lower installation and operating costs. At the same time, drive sizes have been harmonized as far as possible and the number of models in use has been reduced in order to improve logistics and reduce the spares inventory, thereby improving cost-efficiency. Easy maintenance and repair is also ensured: the interchangeable drive units are attached with just a few screws and a single electrical connector, and can be replaced in the shortest possible time. "For this project, Nord put together a team of sales, engineering, and logistics staff who were always available to us and quickly answered our concerns", says Klaus Ruhe, Project Manager at Beumer. "The requirements concerning the logistics of the airport were responded to precisely and with flexibility."

Efficiently designed drive motors
The power performance of the motors varies between 0.55 and 3 kW. All motors rated 0.75 kW and higher are IE2 models which, for the conveyor application, offer a higher efficiency and use less energy than the previously often used drives in the EFF2 efficiency class drives (now classified as IE1). In order to implement the Ecodesign Directive, Nord uses very high quality sheet metal with smaller losses and more active material in the stator. Additionally, the copper filling in the stator slots is increased and the winding scheme optimized. Due to these construction changes, Nord's IE2 motors offer a broader operating range which is taken into consideration in the drive configuration. In some circumstances it is possible to install smaller motors than previously possible because of the greater power reserves. Depending on the motor size, some models can operate at up to 150 % of the nominal power capacity, while maintaining high efficiency. When compared to their direct predecessor models, IE2-type motors offer higher start-up and breakdown torques and develop less waste heat.

Expertise in gearbox manufacturing
The gear units employed for speed adjustment in the facility are mostly SK9012.1 helical gearboxes, supplemented by a number of SK372.1 bevel gearboxes. About half of the drive units are equipped with brakes. Nord is not only a full-scale supplier of drive products and solutions, but also boasts a remarkable vertical range of manufacture including motors, inverters, and all gear parts - from casing and shafts to pinions and worms. The housing construction follows the UNICASE principle introduced by Nord in 1981. With no welded seams, screw fittings, and sealed surfaces, the one-piece housing with integrated shaft bearings features maximum torsional strength and ensures excellent radial and axial load capacity. To improve accuracy and avoid wear and tear, all bearing surfaces are machined in one operation. Thus, the gear units not only achieve a longer lifespan than conventionally manufactured models, but are also particularly quiet due to smoother running.

Conclusion
According to Fraport there are already over 73 kilometers of conveyor systems in use at Frankfurt Airport with a 99.62 % reliability. Of course, the airport operator sets equally high standards for those facilities which the Beumer Group is building within the framework of the extension of Terminal 1. The new seven kilometer long baggage handling line is being set up with particularly high demands for reliability and ease of maintenance. Nord Drivesystems has delivered about 1,700 geared motors, mostly IE2 models, for the new conveyors. They operate efficiently, are practically maintenance-free, and allow for quick exchange as they are easily accessible and interchangeable.

Posted on November 7, 2012 - (669 views)
by
Getriebebau NORD GmbH & Co. KG
NORD Drivesystems Rudolf-Diesel-Strasse 1
22941 Bargteheide - Germany
+49-4532-2890
+49-4532-2892239
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