Apparatus for measuring the profile of a railroad tunnel
AssigneeFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
InventorsJosef Theurer, Klaus Riessberger
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Abstract
A mobile apparatus for measuring the profile of a railroad tunnel comprising a car mounted for mobility on the railroad track, a beam emitter and receiver instrument capable of continuously receiving a signal corresponding to the distance of the tunnel profile from the instrument, a rotatable axle supporting the instrument on the car for pivoting about an axis extending parallel to the longitudinal track axis, and a drive arranged to pivot the instrument about the axis extending parallel to the track axis whereby the instrument may sweep the profile and continuously receive the signal.
Claims11
A mobile apparatus for measuring and indicating the profile of a bounded space surrounding a track having two rails and a longitudinal axis intermediate and parallel to the track rails, which comprises
- (a) a distance measuring instrument capable of continuously receiving a signal corresponding to the distance of the profile of the bounded space from the instrument,
- (b) a car mounted for mobility on the track rails and supporting the instrument for pivoting about an axis extending parallel to the longitudinal track axis,
- (c) a drive arranged to pivot the instrument about the axis extending parallel to the longitudinal track axis whereby the instrument may sweep the profile of the bounded space and continuously receive the signal, (1) the drive comprising a rotatable axle extending in the pivoting axis,
- (d) a drive for moving the car on the track rails,
- (e) a transmission means connecting the rotatable axle to the car drive for pivoting the distance measuring instrument in synchronism with the car drive, and
- (f) an indicating instrument operatively connected to the distance measuring instrument and capable of indicating the signal received thereby.
Dependencies are inferred from the claim text.