Abstract: A tamping assembly for tamping sleepers of a track has a tamping unit with tamping tools. The tamping tools are located opposite one another, are mounted on a height-adjustable tool support, and, by way of drives, can be caused to vibrate and can be fed relative to each other. Each tamping tool includes a pivot lever, which can be rotated about a feed axis, and an inner and an outer tamping pick retainer. Each tamping pick retainer can be laterally pivoted relative to the pivot lever. The outer tamping pick retainer can be pivoted about a first pivot axis and the inner tamping pick retainer can be pivoted about a second pivot axis. The second pivot axis is arranged at an offset to the first pivot axis. Thus, it is no longer necessary to adjacently arrange elements for pivoting the tamping pick retainers.

Abstract: A machine for profiling and distributing ballast of a track, having a frame supported on on-track undercarriages and lateral ballast pick-up devices which are adjustably fastened to the frame, wherein each ballast pick-up device is actuated by a conveyor drive. In this, the machine is designed in such a way that, in an inoperative position, the upper contours of the machine are arranged below a delimiting plane which slopes downward in the working direction and extends through a field of vision of a driver's cabin of a rail vehicle to be coupled to the machine at the rear end thereof. Thus, the machine can be employed as a leading wagon of the rail vehicle, wherein sufficient visibility from the driver's cabin to the track is ensured.

Abstract: A rail treatment machine, mobile on a track, for removing irregularities on a rail head surface of at least one rail of a laid track, includes a machine frame supported on a front on-track undercarriage and a rear on-track undercarriage, as seen in a working direction. A tool frame accommodates at least one tool carrier. A rear end of the tool frame is articulated on the rear on-track undercarriage in an articulation point on a vertical axis of rotation. A front end of the tool frame is supported on a separate on-track undercarriage situated between the front on-track undercarriage and the rear on-track undercarriage.

Abstract: An installation for cleaning ballast of a track includes a plurality of vehicles having machine frames supported on on-track undercarriages. Two shoulder clearing chains, positioned opposite one another relative to a transverse direction of the track, take up ballast located in a shoulder area adjoining sleeper ends, an endless clearing chain follows the shoulder clearing chains relative to a working direction of the installation and is to be guided around the track for taking up ballast underneath the track. A screening installation, conveying devices for transporting ballast, and a ballast introduction device are also provided. A first conveying device transporting ballast to the screening installation is associated with the shoulder clearing chains. A second conveying device transporting ballast to a processing unit is associated with the endless clearing chain. A third conveying device transporting ballast to the screening installation is associated with the processing unit.

Abstract: The invention relates to a machine for profiling and distributing ballast of a track, having a frame supported on on-track undercarriages and lateral ballast pick-up devices which are adjustably fastened to the frame, wherein each ballast pick-up device is actuated by a conveyor drive. In this, the machine is designed in such a way that, in an inoperative position, the upper contours of the machine are arranged below a delimiting plane which slopes downward in the working direction and extends through a field of vision of a driver's cabin of a rail vehicle to be coupled to the machine at the rear end thereof. Thus, the machine can be employed as a leading wagon of the rail vehicle, wherein sufficient visibility from the driver's cabin to the track is ensured.

Abstract: A rail treatment machine, mobile on a track, for removing irregularities on a rail head surface of at least one rail of a laid track, includes a machine frame supported on a front on-track undercarriage and a rear on-track undercarriage, as seen in a working direction. A tool frame accommodates at least one tool carrier. A rear end of the tool frame is articulated on the rear on-track undercarriage in an articulation point on a vertical axis of rotation. A front end of the tool frame is supported on a separate on-track undercarriage situated between the front on-track undercarriage and the rear on-track undercarriage.

Abstract: In the course of rehabilitation of a ballast bed of a track, while creating a track construction site (10), old bulk material (6) to be removed is stored on a plurality of storage wagons (2) connected to form a loading train (7). Parallel thereto, new bulk material (9) pre-deposited on a plurality of storage wagons (2) connected to form a loading train (8) is introduced into the track construction site (10). The introduction of the new bulk material (9) into the track construction site (10) is controlled automatically in dependence on a volume of the old bulk material (6) removed from the track construction site (10).

Abstract: A track maintenance machine for carrying out track maintenance operations includes a plurality of mounts disposed at a distance from one another in the longitudinal direction of the machine in an upper end region of the machine relative to a vertical. A lower end of each mount relative to the vertical is mounted on the track maintenance machine, while an upper end of each mount located at a distance from the lower end is connected to a safety line extending in the longitudinal direction of the machine. A method for carrying out service work on track maintenance machines is also provided.

Abstract: In the course of rehabilitation of a ballast bed of a track, while creating a track construction site (10), old bulk material (6) to be removed is stored on a plurality of storage wagons (2) connected to form a loading train (7). Parallel thereto, new bulk material (9) pre-deposited on a plurality of storage wagons (2) connected to form a loading train (8) is introduced into the track construction site (10).

Abstract: A track maintenance machine for carrying out track maintenance operations includes a plurality of mounts disposed at a distance from one another in the longitudinal direction of the machine in an upper end region of the machine relative to a vertical. A lower end of each mount relative to the vertical is mounted on the track maintenance machine, while an upper end of each mount located at a distance from the lower end is connected to a safety line extending in the longitudinal direction of the machine. A method for carrying out service work on track maintenance machines is also provided.

Abstract: A machine group for cleaning ballast of a track includes a first machine, having an endless clearing chain for ballast cleaning, and a second machine preceding the former with regard to a working direction and having a pick-up device for picking up cleaned ballast pre-deposited on the track. A third machine is arranged to precede the second machine. The third machine has two shoulder excavating devices for picking up the ballast located in a shoulder region of a ballast bed, and a second screening plant for cleaning the picked-up ballast.

Abstract: The invention relates to a clearing device (5) provided for removing ballast below a track (4), which clearing device comprises a clearing beam (10) of a clearing chain (11) that can be positioned below the track (4) in a ballast bed (6) and pivoted about a vertical axis of rotation (7). An end (12) of the clearing beam (10) that is distanced from the axis of rotation (7) can be connected by a releasable coupling (13) to a supporting device (14) fastened to the machine frame (1). In order to pivot jointly with the clearing beam (10), the supporting device is fastened to the machine frame (1) via a linkage (16) that is distanced from the coupling (13) and has a pivot axis (15).

Abstract: In a first method step for cleaning a ballast bed (8) of a track (9), the ballast (6) picked up from a bedding section (7) adjoining sleepers ends (30), after having been cleaned, is introduced underneath the track (9) immediately after the removal—carried out in a second method step—of the ballast (6) located underneath the sleepers.

Abstract: The invention relates to a clearing device (5) provided for removing ballast below a track (4), which clearing device comprises a clearing beam (10) of a clearing chain (11) that can be positioned below the track (4) in a ballast bed (6) and pivoted about a vertical axis of rotation (7). An end (12) of the clearing beam (10) that is distanced from the axis of rotation (7) can be connected by a releasable coupling (13) to a supporting device (14) fastened to the machine frame (1). In order to pivot jointly with the clearing beam (10), the supporting device is fastened to the machine frame (1) via a linkage (16) that is distanced from the coupling (13) and has a pivot axis (15).

Abstract: A machine group for cleaning ballast of a track includes a first machine, having an endless clearing chain for ballast cleaning, and a second machine preceding the former with regard to a working direction and having a pick-up device for picking up cleaned ballast pre-deposited on the track. A third machine is arranged to precede the second machine. The third machine has two shoulder excavating devices for picking up the ballast located in a shoulder region of a ballast bed, and a second screening plant for cleaning the picked-up ballast.

Abstract: A tamping tine (5) for a tamping machine consists of a tine shaft (8) and, positioned at the lower end thereof, a tine pad (9) having a pad bottom edge (10) spaced from the tine shaft (8). The tine pad (9) has pad side surfaces (11), spaced from one another in the direction of the pad bottom edge (10) and extending perpendicularly to the same, each of which connect a pad front side (12) to a pad rear side of the tine pad (9). Hardened metal plates (14) for increasing the abrasion resistance are fastened to the tine pad (9). The hardened metal plates (14) situated side by side along the pad bottom edge (10) form a common boundary line (15) both on the pad front side (12) as well as on the pad rear side. Armouring (17) in the shape of a build-up welding, standing out from a plane (16) of the pad front- or -rear side, is provided adjoining each boundary line (15).

Abstract: In a first method step for cleaning a ballast bed (8) of a track (9), the ballast (6) picked up from a bedding section (7) adjoining sleepers ends (30), after having been cleaned, is introduced underneath the track (9) immediately after the removal—carried out in a second method step—of the ballast (6) located underneath the sleepers.

Abstract: The compression of ballast for a rail track takes place after two-stage cleaning by a cleaning machine. For this purpose, cleaned ballast is dispensed and a first ballast layer is thereby formed. The rail track which is laid on the first ballast layer has lateral oscillations imparted to it by a front stabilization unit, and the first ballast layer is thereby compressed. The formation of a second ballast layer takes place by a second chute, which second ballast layer is subsequently compressed by a rear stabilization unit.

Abstract: The compression of ballast for a rail track takes place after two-stage cleaning by a cleaning machine. For this purpose, cleaned ballast is dispensed and a first ballast layer is thereby formed. The rail track which is laid on the first ballast layer has lateral oscillations imparted to it by a front stabilization unit, and the first ballast layer is thereby compressed. The formation of a second ballast layer takes place by a second chute, which second ballast layer is subsequently compressed by a rear stabilization unit.

Abstract: In a method of tracing a track geometry immediately ahead of a ballast pick-up device of a cleaning machine in a working direction, a first and a second measuring chord are guided on the track by a respective front and rear end point. A versine measured by a first versine sensor of the first measuring chord is stored, in connection with a distance measurement, for registering the rear end point of the first measuring chord as a desired position with respect to a local track point. After the rear end point of the second measuring chord has reached the local track point, the rear end point is displaced until a measurement value corresponding to the stored versine is reached by a second versine sensor, and thus the desired position has been attained.