What are the wheels called on a train?
A wheelset is the wheel–axle assembly of a railroad car. The frame assembly beneath each end of a car, railcar or locomotive that holds the wheelsets is called the bogie (or truck in North America).
Which metal is used in train wheel?
In common with the UIC steels, the type in question is a non-alloy steel; however its carbon content lies between 0.65 – 0.7% which is of a similar order to the usual steel used for rails. Its tensile strength of 1050N/mm² makes this steel comparable with an R9 in the upper tolerance range.
What are the dimensions of a railroad track?
How wide are railroad tracks? The US standard railroad gauge is 4 feet, 8.5 inches (Gauge means width between the two rails). The U.S. federal safety standards allow the standard gauge to vary from 4 ft 8 in (1,420 mm) to 4 ft 9 1⁄2 in (1,460 mm) for operation up to 60 mph (97 km/h).
How does wheel profile and diameter measuring system work?
Wheel Profile & Diameter measuring system : OVERVIEW. The SelectraVision WheelCheck measuring system checks the profile of the train wheels in order to prevent train derailment. The system is able to measure the profile of each passing wheel at very high speed and with an accuracy of 0.5 mm. It is currently working from 0 to 150 km/h.
What is the radiation ratio of a railway wheel?
The radiation ratios obtained for the zero-nodal-circle axial mode shapes with different numbers of nodal diameters, n (see Figure 4.3) are shown in Figure 6.6. In each case, the radiation ratio rises sharply at low frequency, reaching unity between about 250 and 1250 Hz, and then oscillating at higher frequencies.
How are the wheels on a train identified?
The software allows the user to do researches and to create report of wheels status in pdf format. In the web user interface every wheel is associated to a train that can be identified by rfid tags, plate of cars (detecting by ocr optical character recognition) and information given by the central control unit.
What are the modes of a railway wheel?
Top: modes of a disc set in a rigid baffle; middle: modes of an unbaffled disc; bottom: radial modes FIGURE 6-8. Radiation ratio of one-nodal-circle axial modes of 920 mm freight wheel with various numbers of nodal diameters, n.