By | 01 Nov 2016
A "Transformer" from Pfaff Rail Systems for maintaining tube trains used by London Underground
At Ealing Common depot, a railway service workshop of London Underground, the Tube trains used on the District line will now be maintained with the aid of a lifting system from Pfaff Verkehrstechnik GmbH, Kissing (Germany). On account of its futuristic design, the maintenance staff have nicknamed the versatile and unique dual-purpose system the "Transformer". A total of 28 stationary hybrid lifting jacks from Pfaff Verkehrstechnik with bogie lifting beams and body supports raise and hold the trains measuring up to 117 m long up to 1.44 m high, thus granting the engineers the greatest possible and safe access underneath the vehicle.
Precision throughout the entire length
The versatility of the lifting system from Pfaff Verkehrstechnik lies with its ability to lift the Tube trains either as one complete unit or individual carriages for maintenance purposes to an infinitely adjustable, ergonomic height. The 28 jacks lift up to 280 tonnes total weight and the supports can carry a load of up to 196 tonnes. This is a task that requires utmost precision. If a complete train is lifted, the lifting process of the Pfaff-silberblau jacks runs precisely synchronised with a deviation of less than ± 2 mm. The worm gear screw jacks owe this precision to a series of frequency converters, which also permit differing lifting speeds within the system.
Once the vehicle has been lifted, the next components of the hybrid system are ready to go into action. The jacks feature additional, motor-driven supports for holding up the carriage bodies. This in turn makes it possible to lower the individual bogies back down onto the rails and to roll them out from underneath the raised vehicle. Large, bright LED lights integrated into the lifting beams ensure the effective illumination of the work area under the raised vehicle.
Once the Pfaff-silberblau system is lowered, the lifting beams mesh together with the main rail and sit flush with the floor. As soon as the lifting beams go up, they are followed by gap covers, thereby resealing the recesses (which would otherwise remain open), such that they can be stood on.
The lifting system and the work processes are controlled via an easy-to-use touch display, which also enables the maintenance staff to check the status of all the major system components at all times.
New and cost-efficient concept
Pfaff Verkehrstechnik has developed the new concept of a hybrid lifting jack system as a cost-effective alternative to the established underfloor lifting and support systems. It offers excellent value for money, not least due to the fact that the extremely shallow pit depths require significantly less foundation work.
The motion technology for the lifting system from Pfaff Verkehrstechnik GmbH was developed by the sister company also based in Kissing: Columbus McKinnon Engineered Products delivered the sophisticated Pfaff-silberblau screw jacks as an integral component of the system used for lifting and supporting the London Underground Tube trains.
Further information on Pfaff Verkehrstechnik and its products is available online at www.pfaff-silberblau.com/rail-systems.
About Pfaff Verkehrstechnik
Pfaff Verkehrstechnik GmbH is an affiliated company of Columbus McKinnon Engineered Products GmbH, which is also based in Kissing, under the umbrella of Columbus McKinnon Corporation (CMCO), Getzville/USA.
As well as supplying transportation components, Pfaff Verkehrstechnik primarily supplies complete planning, installation and maintenance of turnkey jacking systems for rail vehicles. Pfaff jacking systems are used worldwide in locations such as Montreal/Canada, Guangzhou/China, Taipei/Taiwan, Madrid/Spain and Vienna/Austria.
More information about the services and products of Pfaff Verkehrstechnik can be found at www.pfaff-silberblau.com.
About Columbus McKinnon Engineered Products
Columbus McKinnon Engineered Products GmbH, Kissing/Germany, ranks with its brand Pfaff-silberblau amongst the technology leaders in components and system solutions for mechanical motion and lifting technology. The product portfolio ranges from high quality worm gear screw jacks to powerful lifting tables and rope winches. Based on these components, Columbus McKinnon Engineered Products also offers customer specific solutions for all kinds of applications.
Columbus McKinnon Engineered Products GmbH, Kissing/Germany, is a company of the listed Columbus McKinnon Corporation (CMCO), Getzville/USA, a leading designer, manufacturer and marketer of material handling products, systems and services. Worldwide, the corporation has more than 2,600 employees on 18 production sites in 7 countries and 52 additional sales offices.
For more information about Columbus McKinnon Engineered Products and the brand Pfaff-silberblau please visit www.pfaff-silberblau.com.
A "Transformer" from Pfaff Rail Systems for maintaining tube trains used by London Underground
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At Ealing Common depot, a railway service workshop of London Underground, the Tube trains used on the District line will now be maintained with the aid of a lifting system from Pfaff Verkehrstechnik GmbH, Kissing (Germany). On account of its futuristic design, the maintenance staff have nicknamed the versatile and unique dual-purpose system the "Transformer". A total of 28 stationary hybrid lifting jacks from Pfaff Verkehrstechnik with bogie lifting beams and body supports raise and hold the trains measuring up to 117 m long up to 1.44 m high, thus granting the engineers the greatest possible and safe access underneath the vehicle.
BLS, a railway operating company in Switzerland, has equipped the modernised plant in Spiez with lifting jacks from Pfaff Verkehrstechnik for the maintenance of the latest generation of multiple units. Thanks to the wireless control of the entire lifting jack system via a WLAN infrastructure, flexibility during maintenance work is increased and there are no longer any troublesome control cables on the ground.
The 16 Pfaff-silberblau lifting jacks each have a load capacity of 25 tonnes and can lift and lower entire multiple units with a total weight of up to 400 tonnes and a total length of up to 105 metres for maintenance purposes, for example the well-known 4-carriage multiple-unit train “Mutz” with a total weight of 217 tonnes. Thanks to the new system, which can be extended to include further lifting jacks, the modernised workshops in Spiez will also be able to service 6-carriage multiple units in future.
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