Abstract: A machine having a ballast take-up device (5) for taking up ballast located underneath a track has an endless clearing chain (8) guided in a chain channel (14). In a connecting joint (18) from a transverse channel (15) to a transport channel (17), a ballast deflector blade (20) pivotable about a pivot axis (19) is fastened. Arranged on said ballast deflector blade (20) is a ballast conveyor (24), designed for ballast transport in the direction towards a pivot axis (19) by means of a conveyor drive (23). With this, it is possible to expand the operating range of the ballast take-up device, as needed.

Abstract: The invention relates to an energy supply system for a mobile resistance welding machine for flash-butt welding of track rails, comprising a combustion engine (1) coupled to a generator (2) as well as a charging device (5) for charging an energy store (7), wherein the energy store (7) is a buffer element of an intermediate circuit (13) to which a welding inverter (14) is connected. In this, the energy supply system comprises an island grid to which the generator (2) is connected and which is coupled to the intermediate circuit (13) by means of a controlled power converter (16).

Abstract: Provided in a tamping unit for tamping a track are squeezing drives (14) for a squeezing motion of tamping tines. In a hydraulic cylinder (19)—having a squeezing piston (17) with a piston rod (18)—of the squeezing drive (14), a first pressure chamber (20) for producing the squeezing motion (8) is provided. Additionally arranged is a second pressure chamber (21) for producing an opening motion directed opposite to the squeezing motion, and a third pressure chamber (22) provided for producing vibrations.

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 cleaning vehicle (1) for cleaning ballast (2) of a track (4) with a rail vehicle (10) has a screening installation (15) provided for the ballast cleaning. A gantry crane (6) mobile on the rail vehicle (10) via crane rails (8) in a longitudinal direction (7) of the vehicle is provided for the transport of the ballast (2) stored in containers (11). Forming a discharge station (12) for discharging the soiled ballast (2), a receiving end (13) of a first conveyor belt (14) is provided, the latter having a discharge end (16) positioned above the screening installation (15). Forming a loading station (17) for discharging the cleaned ballast (2) into an empty container (11), a discharge end (18) of a second conveyor belt (19) is provided, the receiving end (20) of which is associated with an outlet opening (21) of the screening installation (15).

Abstract: Two squeezing drives, each connected via a joint to a tamping tine of a tamping unit, are connected to one another—unchangeably with regard to their position relative one another—to form a drive unit. The latter has a sliding bearing, situated between the two joints, which is freely movable in vertical direction in a bearing guide connected to the tine carrier.

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 a method for stabilizing an earth formation exposed after removal of a track and ballast, in a first working pass in a work section following a rear crawler track with regard to a working direction, parallel to the removal of the ballast the earth formation is loosened up, aggregates are introduced, and grading takes place. In a second working pass, the earth formation to which aggregates have been added is mixed thoroughly by getting picked up by means of a clearing chain and transported onward to a discharge point located behind the rear crawler track and discharged again upon the exposed earth formation, after which, by grading and consolidating the discharged earth formation, a rehabilitation layer is formed.

Abstract: A loading car for picking up, transporting onward and discharging bulk material has a car frame supported on on-track undercarriages and a distributing conveyor belt extending in a longitudinal direction of the car, for transporting the bulk material to discharge devices. The distributing conveyor belt is constructed to be displaceable in the longitudinal direction of the car for selectively charging the discharge devices. A first discharge device is constructed as a chute disposed above a track. A second as well as a third discharge device are constructed in each case as a conveyor belt pivotable about a vertical axis and each has a receiving end positioned in the region of the axes.

Abstract: A storage wagon (1) for bulk material (2) has, above the transfer end (9) of a bottom conveyor belt (4) and underneath a discharge end (15) of an auxiliary conveyor belt (14), a deflector plate (17) extending perpendicularly to the longitudinal direction (3) of the wagon. The deflector plate (17) is designed to be pivotable about a pivot axis (18) relative to the loading container (5) for changing a deflection angle ? enclosed with a conveying plane (19) of the bottom conveyor belt (4).

Abstract: 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).

Abstract: For correction of a track position in connection with ballast cleaning, after cleaned ballast has been returned to a track, the actual position of the latter is measured while determining actual position data. Parallel to that, fixed point correction values are determined by a sighting trolley following behind. The actual position data and the fixed point correction values are transmitted to the tamping machine, following behind, and are used for determining correction values for a desired track position to be created by tamping.

Abstract: A tamping unit of a machine for simultaneously tamping at least two sleepers of a track, positioned one following the other with regard to a longitudinal direction of the machine, includes inner tamping tines provided for simultaneous immersion into the same sleeper crib and, arranged at either end, a respective outer tamping tine. Each tamping lever mounted on an assembly frame for pivoting about a pivot axis is connected to a squeeze drive. Each squeeze drive is mounted on a common eccentric shaft having an eccentricity with respect to an axis of rotation. The eccentricity causing vibrations of the inner tamping tine is configured differently as compared to the eccentricity causing vibrations of the outer tamping tine.

Abstract: In a tamping unit for tamping sleepers of a track, both squeezing drives of a tamping tine pair are articulatedly connected to a common connecting carrier. A vibration exciter fastened to the tine carrier is connected to the connecting carrier, likewise fastened to the tine carrier, for transmission of tamping tine vibrations from the connecting carrier to the squeezing drives and the tamping tines.

Abstract: A cleaning vehicle (1) for cleaning ballast (2) of a track (4) with a rail vehicle (10) has a screening installation (15) provided for the ballast cleaning. A gantry crane (6) mobile on the rail vehicle (10) via crane rails (8) in a longitudinal direction (7) of the vehicle is provided for the transport of the ballast (2) stored in containers (11). Forming a discharge station (12) for discharging the soiled ballast (2), a receiving end (13) of a first conveyor belt (14) is provided, the latter having a discharge end (16) positioned above the screening installation (15). Forming a loading station (17) for discharging the cleaned ballast (2) into an empty container (11), a discharge end (18) of a second conveyor belt (19) is provided, the receiving end (20) of which is associated with an outlet opening (21) of the screening installation (15).

Abstract: 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).

Abstract: A welding unit for welding rails of a track includes a shearing device for removing a weld bead. The shearing device includes a head part having a shearing edge and two side parts which are pivotable towards one another and have a shearing edge. A rail base section to be applied to a rail base is associated with each side part. The rail base sections each include an end region facing towards each another having a tooth system for a form-locking connection which is effective in a longitudinal direction of the rail after the two side parts have been applied to the rail.

Abstract: For tamping two adjacent sleepers (9) of a track (3), the joint lowering of two adjoining tamping units (2) takes place with a time delay. As a result, the immersion in particular of immediately adjacent inner tamping tines (20) plunging into a common sleeper crib (18) is facilitated.

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 vehicle combination for cleaning ballast on a track consists of a first ballast-collecting vehicle at the front with respect to a working direction, equipped with two edge-clearing chains which are mutually opposed across the width of the track and are designed to collect the ballast lying in a track bed region adjacent to the sleeper ends, and also consists of a subsequent second ballast-collecting vehicle having a continuous clearing chain that can be placed around the track to collect the ballast lying under the track, and comprising sieve systems for cleaning the ballast. In front of the first ballast-collecting vehicle there are two mutually separable sieve vehicles disposed one behind the other in a longitudinal direction of the machine and each having a sieve system. The two sieve vehicles can be loaded via a first conveyor belt line with ballast collected by the ballast-collecting vehicles.