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Simplifying digital monitoring in freight transport Schaeffler and Siemens Mobility develop intelligent axlebox generator

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With a generator integrated into the axlebox bearing housing cover, Schaeffler provides an independent power supply for freight cars. (Photos: Schaeffler & Siemens Mobility)

04.06.2019 | Schweinfurt/Munich

  • Axlebox generator from Schaeffler supplies Siemens Mobility’s Controlguide CTmobile telematic unit with power
  • Wireless system can easily be retrofitted
  • “Intelligent axlebox generator” as a digital monitoring solution for efficient rail freight transport

Customers who want to digitally monitor their freight train fleets can do so in an easy and efficient manner by using a solution developed by Schaeffler and Siemens Mobility.
The “Intelligent axlebox generator” innovation project combines the expertise of both companies in the fields of axlebox generators (Schaeffler) and telematic systems (Siemens Mobility), resulting in a digital system for improving transparency and increasing efficiency in rail freight transport.
With a generator integrated into the axlebox bearing housing cover, Schaeffler provides an independent power supply for freight cars. Siemens Mobility uses this independent power supply for its telematics units, which record information about the train during operation and make the data immediately available via a mobile network.

Independent power supply for telematics units using axlebox generators

Freight cars generally do not have their own electrical power supply. Until now, electrical systems in freight cars have mainly been supplied with power from batteries. The available energy quantity is thus limited from the outset, which also limits the systems’ functionality.

With its axlebox generator, Schaeffler is presenting an independent power supply that is flange-mounted to the wheelset and provides an alternative to a supply of power from the locomotive or batteries. The performance of the electronic system is therefore available without restriction. The wear-free generator supplies one watt of power starting from approximately 40 km/h.

The combination of a continuous supply of power and the Controlguide CTmobile telematic system from Siemens Mobility makes additional added-value services such as condition-based monitoring and immediate data availability possible.

The system is “wireless” and can easily be retrofitted or replaced. For customers, converting to an “intelligent” axlebox generator means that the wheelset’s standard components – like the housing, bearing, and axle journals – remain unchanged. Only the housing cover and the axle cover need to be replaced. In addition, the system is maintenance-free.

Sensors for monitoring the wheelset regarding temperatures, vibrations, wear, and flat spots on the wheels can optionally be integrated and are currently being developed.

Siemens Mobility offers information about the train in real time

Siemens Mobility’s scope of delivery includes a circuit board integrated into the axlebox bearing housing cover and the CTmobile telematic box installed on the freight car, which records the data und transmits them via a mobile network. Moreover, different sensors for parameters such as door openings, load, and temperatures can be integrated into the system.

Herausgeber: Schaeffler AG
Ausgabeland: Deutschland

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