Patent ID: 11920308
Assignee: HP3 REAL GMBH
Field: Civil engineering (Other fields)
Classification: CPC E  B  G | IPC B  E  G

Claim 15:
16. 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.