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An axle counter detection point in the UK Axle counter for automatic railway crossing (Slovenia) An axle counter is a system used in railway signalling to detect the clear or occupied status of a specified section of track. The system generally consists of a wheel sensor (one for each end of the section) and an evaluation unit for counting the ...
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
There are several levels of inspection on railroad equipment. Inspections are continuous, starting when the car is being built and repeated at regular intervals. Before the train begins its journey, the locomotives and the cars are checked. This is done by mechanical department workers, sometimes cameras and scanners are also used.
The detectors would transmit their data via wired links to remote read-outs in stations, offices or interlocking towers, where a stylus-and-cylinder gauge would record a reading for every axle; a defect would register a sharp spike on the graph and an alarm would sound or a visible signal would be given to the train crew.
In 1927, Dr. Elmer Sperry built a massive rail inspection car under contract with the American Railway Association. Magnetic induction was the method used on the first rail inspection cars. This was done by passing large amounts of the magnetic field through the rail and detecting flux leakage with search coils.
Traditionally these are the wheels, axles, axle boxes, springs and vehicle frame of a railway locomotive or wagon. [1] The running gear of a modern railway vehicle comprises, in most instances, a bogie frame with two wheelsets. However there are also wagons with single axles (fixed or movable) and even individual wheels.
Adtranz was a multi-national rail transportation equipment manufacturer with facilities concentrated in Europe and the US. The company, legally known as ABB Daimler-Benz Transportation, was created in 1996 as a joint venture between ABB and Daimler-Benz to combine their rail equipment manufacturing operations.
A rail vehicle wheelset, comprising two wheels mounted rigidly on an axle A wheelset is a pair of railroad vehicle wheels mounted rigidly on an axle allowing both wheels to rotate together. Wheelsets are often mounted in a bogie (" truck " in North America ) – a pivoted frame assembly holding at least two wheelsets – at each end of the vehicle.