US 11,920,308 B2Granted

Method for track position improvement by means of a track-movable track-tamping machine

AssigneeHP3 Real GmbH

InventorBernhard Lichtberger

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Abstract

A method is proposed for track position improvement by means of a track-movable track-tamping machine (6) with a three-point work measurement system having three measurement carriages (A, B, C) and a cord (9) stretched therebetween, a tamping unit (5), a lifting and straightening unit (8) for tracks and in particular an odometer. The position of the track after the correction work of the track-tamping machine (6) is recorded by means of a measurement system. In order to reduce the straightening error, it is proposed that a computer (R) calculates the difference between a predetermined desired track position (1) and an actual position recorded by the measurement system, i.e. a residual error (Kh), and in that the position of the rear cord end on the rear measurement carriage (C) of the track-tamping machine (6) of the three-point work measurement system is continuously corrected in such a way that the rear cord end on the measurement carriage (C) is guided on the desired track position (1).

Claims21

Dependent claims

A method comprising:

performing correction work providing track position improvement using a track-movable track-tamping machine with a three-point work measurement system having three measurement carriages and a cord stretched therebetween, a tamping unit, and a lifting and straightening unit for tracks;
and
recording an actual position of the track after the correction work of the track-tamping machine using the measurement system;
calculating using a computer a difference between a predetermined desired track position and the actual position recorded by the measurement system, as a residual error;
and
continuously adjusting a detected position of a rear cord end on a rear measurement carriage of the measurement carriages of the track-tamping machine of the three-point work measurement system so that an adjusted detected position the rear cord end on the rear measurement carriage is guided on the desired track position;
and
calculating with the computer a correction of a position the track to a desired track position using the adjusted detected position of the rear cord end in the three-point measurement system;
and
correcting the position of the track with the track-movable track-tamping machine so as to place said track into a position defined by said calculated correction.

7 more elements

A method for improving positioning of a track of a railroad bed, said method comprising:

providing a track-tamping machine being movably supported on said track, and having a three-point work measurement system having three measurement carriages, a tamping unit, and a lifting and straightening unit for tracks;
said three point measurement system having a rear point A on a rearmost of the measurement carriages and a front point C on a forwardmost of the measurement carriages, said tamping unit and said lifting and straightening unit being located therebetween;
performing correction work on the track using the track-tamping machine so as to move a portion of the track toward a predetermined desired position therefor;
moving the track-tamping machine forward so that the lifting and straightening unit is operable on another portion of the track;
recording an actual position of the track after the correction work of the track-tamping machine in an area of the rear point A;
calculating using a computer a residual error as a difference between a predetermined desired track position and the actual position of the track;
and
measuring a position of the rear point A on the rearmost of the measurement carriages in said three-point measurement system;
deriving in the computer an adjusted position of the rear point A from the measured position of the rear point A on the rearmost of the measurement carriages in said three point measurement system and the residual error such that said adjusted position of the rear point A corresponds to the desired track position;
measuring a position of the front point C on the forwardmost of the measurement carriages of said three-point measurement system;
determining a correction for movement of said another portion to a desired position therefor, said correction being derived from the measured position of front point C and the adjusted position of rear point A in the computer;
and
moving said another portion of the track to the desired position thereof based on the correction and using the lifting and straightening unit.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/960,471Filed 17 Jan 2019
Priority: AT A 50051/201822 Jan 2018
Published: US 2020/0347557 A15 Nov 2020
Granted: 5 Mar 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

E01B 35/00
Applications of measuring apparatus or devices for track-building purposes
E01B 35/10
For measuring irregularities in longitudinal direction: for aligning
B61K 9/08
Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track…:…
E01B 27/17
Sleeper-tamping machines: combined with means for lifting, levelling or slewing the track