In a method for renewing a track (2) and cleaning a ballast bed (3), the old track (2) is lifted off the ballast bed in sections as a track panel (15), transported forward in a working direction (4) and deposited on track panel wagons (8). The exposed ballast bed (3), forming a renewal gap (17), is cleaned by a cleaning machine (11), spoil (32) accruing in the process is transported forward underneath the track panels (15) deposited on the track panel wagons (8), and stored in hopper cars (10). New rails (29), pre-deposited underneath new sleepers (27) positioned on sleeper wagons (14), are pulled forward into the renewal gap (17) by the cleaning machine (11) and deposited on the cleaned ballast bed (3). The new sleepers (27) are laid down on the cleaned ballast bed and connected to the new rails (29) lifted off the ballast bed (3).

Systems and methods for using a mobile crane assembly are provided. The mobile crane assembly includes a mobile crane having a first truss assembly and a second truss assembly spaced apart and movable relative to one another. The first truss assembly and the second truss assembly are each coupled to a rail car end assembly. The mobile crane further comprises an upper gantry assembly movable along the first truss assembly and the second truss assembly. A flat cart is coupled to the rail car end assembly, and a material handling cart is received upon the flat cart and is configured to move between the flat cart and the rail car end assembly based upon input from a controller in electrical communication with the upper gantry assembly.

The present disclosure generally relates to a road rail stoneblower vehicle for carrying out rail maintenance operations near fixed structures such as bridges and overpasses. The road rail stoneblower includes a hi-rail chassis having a first set of wheels configured to engage a road surface and a second set of wheels configured to engage surfaces of substantially parallel rails of a railroad track. The road rail stoneblower further includes a plurality of workheads that are capable of dispensing ballast stones into a bed of ballast underlying the railroad track to adjust the height of the rails. The road rail stoneblower further includes a leveling system detachedly coupled to the hi-rail chassis that is configured to transmit a detectable signal that defines a reference plane with which the rails are to be aligned. Related methods of operation of the road rail stoneblower vehicle and associated maintenance of ballast beds underlying railroad tracks are also described.

The invention relates to a method for correcting vertical position defects of a track after a lifting-tamping process, with a stabilizing process carried out by means of a dynamic track stabilizer in which a stabilizing unit acts on the track at a forward-moving working point in a working direction, with track position data of the untreated track being recorded before the lifting-tamping process, and with track position data of the tamped track being recorded after the lifting-tamping process at a measuring point located in front of the stabilizing unit in the working direction. In this case, additional track position data of the stabilized track are recorded at an post-measuring point located behind the stabilizing unit in the working direction, with the dynamic track stabilizer being actuated during the stabilizing process as a function of track position data of the untreated and the tamped track at the working point and of track position data of the stabilized track at the post-measuring point. The additional post-measurement of the track position after the stabilizing process enables precise control of the dynamic track stabilizer.

A tamping machine (1) for compacting the ballast bed of a track (9), has tamping units (4) for tamping under a track, with a lifting-straightening device (2) arranged between running gears (8), preferably in front of the tamping units (4) in the working direction (C), for lifting and straightening tracks and railroad switches, having at least one height-adjustable lifting roller (6) and having at least one lifting hook (7) that is height-adjustable independently of the lifting roller (6), the lifting roller (6) and the lifting hook (7) being arranged on a common console (31) that is guided displaceably transversely to the longitudinal axis (L) of the tamping machine by means of an adjusting drive (17). The console (31) is arranged on a guiding slide (10), with which it is displaceable transversely to the longitudinal axis (L) of the tamping machine along a transverse guide (16), and the console (31) is mounted on the guiding slide (10) so as to be pivotally adjustable about a pivot axis (30) parallel to the longitudinal axis of the tamping machine by means of a swivel drive (12).

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.

Tie-arrangement system includes a conveyor assembly configured to receive ties for placement in a track for rail vehicles. The conveyor assembly is configured to receive the ties in a common plane relative to each other. The tie-arrangement system includes an accumulator assembly configured to receive the ties in the common plane from the conveyor assembly. The accumulator assembly is configured to arrange the ties in a same orientation in groups and to move the groups of the ties out of the accumulator assembly. The tie-arrangement system includes a delivery assembly configured to receive the groups of the ties arranged by the accumulator assembly into the same orientation. The delivery assembly is configured to place the groups of the ties onto a surface off the tie-arrangement system for placement of the ties in the track for the rail vehicles.

The invention relates to a method for treatment of a ballast track by means of track maintenance machine which comprises a lifting unit, having gripping rollers for gripping a track grid formed of rails and sleepers and lifting drives for lifting the track grid, and a measuring system for comparing to a target position of the track, wherein the lifting unit is set in vibration by means of a vibration exciter and the vibration is transmitted to the track grid, wherein the lifting unit is controlled by means of a control device in such a way that, during a lifting operation, the lifting unit is set in vibration, and the track grid is first lifted to above the target position and subsequently lowered to the target position. By means of the method according to the invention it is possible to carry out in a simple manner a lifting of the track grid with simultaneous stabilization of the track position.

The present disclosure generally relates to a railroad chassis vehicle having independently operable workheads for carrying out rail maintenance operations on non-uniform sections of railroad tracks. Related methods of operation of the railroad chassis and associated maintenance of ballast beds underlying railroad tracks are also described.

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.