Track geometry readings repeatability - TQM precision

Frame vibration-free measurement
TQM Horizontal and Vertical Measurement modules work independently of the trolley frame. Track geometry measurement modules are either suspended or supported by the trolley frame. Frame is pushing, pulling against the rail and holding in position all track geometry measuring modules along the track
Rigid track geometry measuring bases
In order to be able to deliver measurements with sub-milimeter accuracy, TQM solution uses a rigid chord design solution (instead of a pivoting one). All chords are further strengthened against deflection in both Horizontal and Vertical planes

Graph illustrates typical TQM precision of 6 TQM runs (HV readings repeatability) - Y scale in mm

Track geometry edge measurement
Horizontal and Vertical alignments are based on self-cleaning contact rollers rim measurements capable of measuring worn rail position below rail lipping. Only the Cross Level module is equipped with 75mm wide measuring wheels

Secured position of track geometry measuring modules against the rail
In TQM solution, frame movement is set free and Measuring Modules are held by antivibration pullers against the rail

Motorised TQM 12V battery powered motor delivers a smooth survey ride