A method for measuring and displaying the track geometry of a track system uses a track-driveable permanent-way machine, comprising a control measurement system measuring the track position to be corrected before a lifting and lining device, an acceptance measurement system measuring the corrected track position after it, and output units displaying the measured values. The lifting and lining device is controlled depending on the measured values of the control measurement system and the acceptance measurement system to achieve a specified target track geometry. A three-dimensional position image is calculated from the curvature image (k.sub.(s)), longitudinal level image (h.sub.(s)) and superelevation image (u.sub.(s)) of the target track geometry, put into a perspective display, and displayed by the output unit, supplemented by measured error curves for track parameters of track direction, superelevation, twist, and longitudinal level.

The present disclosure generally relates to an improved railroad track ballast tamping tool. The tamping tool may be lowered into ballast underlying railroad tracks and between railroad track ties for performing ballast tamping operations. The tamping tool includes a shank and a paddle coupled to the shank. The paddle comprises a top ridge disposed on a top surface of the paddle and a bottom ridge disposed on a bottom surface of the paddle. The tamping tool additionally includes a top surface wear tile coupled to the top surface of the paddle and abutting a rear face of the top ridge, a bottom surface wear tile coupled to the bottom surface of the paddle and abutting a rear face of the bottom ridge, and a nose wear tile coupled to the top and bottom surfaces of the paddle and abutting a front face of both the top and bottom ridges.

The method for evaluating the compactness of a layer of railroad ballast near a railroad tie includes at least one step of taking at least two measurements (11,11a,11b) of the penetration resistance (Qd) of the ballast (13) near one and the same railroad tie (10), and a step of calculating the mean value (Qd.sub.mean) of these measurements (11,11a,11b) of penetration resistance (Qd). Also provided are a device for implementing such a method and a method for predicting the settlement of the ballast of a railroad track including a step of evaluating the compactness of a ballast near a railroad tie.

During the tamping of a switch, a switch section delimited by two adjacent sleepers is photographed in a front machine section for producing a reference photo, and the photo is stored. The stored reference photo is automatically made available on a monitor, positioned in a work cabin, for observation by an operator as soon as the tamping tools are situated above the section of the switch shown by the reference photo.

During the tamping of a switch, a switch section delimited by two adjacent sleepers is photographed in a front machine section for producing a reference photo, and the photo is stored. The stored reference photo is automatically made available on a monitor, positioned in a work cabin, for observation by an operator as soon as the tamping tools are situated above the section of the switch shown by the reference photo.

A machine (1) for stabilization of a track (2) has a machine frame (5), mobile on the track by means of on-track undercarriages, on which a stabilizing unit (4) is arranged which has vertical adjustment drives (6) as well as a vibration exciter (7). The stabilizing unit is designed to be displaceable relative to the machine frame (5) in a longitudinal direction (23) of the machine by means of a longitudinal displacement drive (24).

A machine (1) for stabilization of a track (2) has a machine frame (5), mobile on the track by means of on-track undercarriages, on which a stabilizing unit (4) is arranged which has vertical adjustment drives (6) as well as a vibration exciter (7). The stabilizing unit is designed to be displaceable relative to the machine frame (5) in a longitudinal direction (23) of the machine by means of a longitudinal displacement drive (24).

A method for measuring and displaying the track geometry of a track system uses a track-driveable permanent-way machine, comprising a control measurement system measuring the track position to be corrected before a lifting and lining device, an acceptance measurement system measuring the corrected track position after it, and output units displaying the measured values. The lifting and lining device is controlled depending on the measured values of the control measurement system and the acceptance measurement system to achieve a specified target track geometry. A three-dimensional position image is calculated from the curvature image (k.sub.(s)), longitudinal level image (h.sub.(s)) and superelevation image (u.sub.(s)) of the target track geometry, put into a perspective display, and displayed by the output unit, supplemented by measured error curves for track parameters of track direction, superelevation, twist, and longitudinal level.

During the tamping of a switch, a switch section delimited by two adjacent sleepers is photographed in a front machine section for producing a reference photo, and the photo is stored. The stored reference photo is automatically made available on a monitor, positioned in a work cabin, for observation by an operator as soon as the tamping tools are situated above the section of the switch shown by the reference photo.

A machine (1) for stabilization of a track (2) has a machine frame (5), mobile on the track by means of on-track undercarriages, on which a stabilizing unit (4) is arranged which has vertical adjustment drives (6) as well as a vibration exciter (7). The stabilizing unit is designed to be displaceable relative to the machine frame (5) in a longitudinal direction (23) of the machine by means of a longitudinal displacement drive (24).