Track curve lining method and apparatus

Details Track curve lining method and apparatus Track curve lining method and apparatus

B - Operations, Transporting

61

K

104/1, 354/25

B61K 9/08 (2006.01) E01B 35/04 (2006.01) G01C 5/00 (2006.01)

Patent

CA 1199114

Abstract A railroad track curve is plotted by measuring ordinates at a fixed point of a fixed length reference line that is moved to a series of incremental points spaced around the curve, and the ordinates are stored in a data processor memory. The data processor calculates theoretical ordinates for an ideal curve which most closely fits the measured ordinates, and the track is shifted at the incremental points under control of the processor a distance and direction corresponding to the deviation between the measured and calculated ordinates. The system permits determination of transition points for simple and compound curves, and allows superelevation values to be selected and intermediate values calculated for smooth transition between tangent and constant curve track. The reference line is established by a light beam, and the processor is part of a self-propelled, on-track lining machine.

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