Measurement device and method for detecting a track geometry

Patent metadata

Field	Value
Publication number	US-10954637-B2
Application number	US-201716348725-A
Country	US
Kind code	B2
Filing date	Nov 29, 2017
Priority date	Dec 19, 2016
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

The invention relates to a measuring device ( 13 ) for recording a track geometry of a track ( 5 ) immediately after a treatment of the track ( 5 ) by means of track maintenance machine ( 1 ), wherein the measuring device comprises wheel axles ( 16 ) for travelling on the track ( 5 ), connecting elements ( 15 ) for mounting to the track maintenance machine ( 1 ) and a data interface ( 41 ) for exchanging data with the track maintenance machine ( 1 ). Further, the measuring device ( 13 ) comprises an assembly frame ( 22 ) on which an inertial measuring unit ( 14 ) is arranged, wherein a front wheel axle ( 16 ) and a rear wheel axle ( 16 ) are mounted on the assembly frame ( 22 ) for rotation relative to one another about an axis of rotation ( 21 ) extending orthogonally to the wheel axles ( 16 ). Thus, an efficient check measurement of the lateral, longitudinal and vertical position of the track ( 5 ) is possible.

First claim

The invention claimed is:

1. A measuring device ( 13 ) for recording a track geometry of a track ( 5 ) immediately after a treatment of the track ( 5 ) by means of track maintenance machine ( 1 ), wherein the measuring device comprises wheel axles ( 16 ) for travelling on the track ( 5 ), connecting elements ( 15 ) for mounting to the track maintenance machine ( 1 ) and a data interface ( 41 ) for exchanging data with the track maintenance machine ( 1 ), wherein the measuring device ( 13 ) comprises an assembly frame ( 22 ) on which an inertial measuring unit ( 14 ) is arranged, and that a front wheel axle ( 16 ) and a rear wheel axle ( 16 ) are mounted on the assembly frame ( 22 ) for rotation relative to one another about an axis of rotation ( 21 ) extending orthogonally to the wheel axles ( 16 ).

2. The measuring device ( 13 ) according to claim 1 , wherein to form the axis of rotation ( 21 ), the assembly frame ( 22 ) is split by a rotation joint ( 23 ) into a front frame part ( 24 ) and a rear frame part ( 25 ).

3. The measuring device ( 13 ) according to claim 1 , wherein the connecting elements ( 15 ) comprise a first Watt linkage ( 28 ) for guiding the assembly frame ( 22 ) in lateral direction.

4. The measuring device ( 13 ) according to claim 1 , wherein the measuring device ( 13 ) comprises a support bracket ( 51 ) for each rail ( 4 ) for coupling to a linkage of a levelling chord ( 10 ).

5. The measuring device ( 13 ) according to claim 1 , wherein the measuring device ( 13 ) comprises a chord tensioning device ( 43 ) for clamping a lining chord ( 9 ).

6. The measuring device ( 13 ) according to claim 5 , wherein the chord tensioning device ( 43 ) is connected via a steering arm ( 47 ), supported centrally on the assembly frame ( 22 ), to a second Watt linkage ( 46 ) for connection to the track maintenance machine ( 1 ).

7. The measuring device ( 13 ) according to claim 1 , wherein at least one contact-less position measuring device ( 17 ) is arranged for determining the position of the assembly frame ( 22 ) relative to each rail ( 4 ).

8. The measuring device ( 13 ) according to claim 1 , wherein each wheel axle ( 16 ) is designed as a telescopic axle ( 18 , 19 ) on which the measuring wheels ( 20 ) having cylindrical running surfaces are arranged.

9. The measuring device ( 13 ) according to claim 8 , wherein a measuring sensor ( 35 ) for registering a track gauge is associated with at least one telescopic axle ( 18 , 19 ).

10. The measuring device ( 13 ) according to claim 8 , wherein a guide blade ( 36 ) for guidance along a check rail is associated with each measuring wheel ( 20 ).

11. The measuring device ( 13 ) according to claim 1 , wherein at least one measuring wheel ( 20 ) is designed as an element of a path measuring device ( 42 ).

12. The measuring device ( 13 ) according to claim 1 , wherein each measuring wheel ( 20 ) comprises a running wheel ( 38 ) and a flange ( 39 ) which are mounted for rotation relative to one another on a shaft ( 40 ).

13. The method for recording a track geometry of a track ( 5 ) by means of the measuring device ( 13 ) according to claim 1 , wherein, immediately after an rail undercarriage ( 3 ) of the track tamping machine ( 1 ) has travelled on the track ( 5 ), the wheel axles ( 16 ) of the measuring device ( 13 ) are pressed onto the rails ( 4 ) from above for check measurement of the track geometry, and that the position of the assembly frame ( 22 ) is registered by the inertial measuring unit ( 14 ).

14. The method according to claim 13 , wherein a separate spatial curve is established for each rail ( 4 ) in an evaluation device ( 52 ) from a spatial curve recorded by means of the inertial measuring unit ( 14 ) and from a recorded track gauge.

15. The method according to claim 13 , wherein a chord tensioning device ( 43 ), arranged on the measuring device ( 13 ) and laterally guided between two stops ( 49 , 50 ), is pressed against one of the two stops ( 49 , 50 ) for positioning relative to a rail ( 4 ).

Assignees

• Plasser & Theurer Export Von Bahnbaumaschinen Gmbh

Inventors

• Kaiser Christoph

Classifications

• E01B27/16 Primary

  Sleeper-tamping machines · CPC title

• E01B35/00

  Applications of measuring apparatus or devices for track-building purposes (apparatus on locomotives or cars to indicate or record bad track sections B61K9/00; measuring angles, linear dimensions, or irregularities in general G01B, G01C) · CPC title

• E01B2201/08

  by plastic or elastic deformation of fastener · CPC title

• E01B35/06

  for measuring irregularities in longitudinal direction · CPC title

• E01B27/17 Primary

  combined with means for lifting, levelling or slewing the track · CPC title