Disclosed is an articulated assembly of two links for a ballast removal chain, a first of the two links comprising a single-piece member having two flanges which are parallel to one another and each of which has a through-hole, a second of the two links comprising a single-piece member comprising a guide flange that is inserted between the two parallel flanges of the first link, the guide flange being penetrated by a guide hole, the articulated assembly further comprising a hinge pin that is inserted into the guide hole and the through-hole in each of the two parallel flanges. The guide hole is reinforced by a bushing designed to receive the hinge pin and rotatingly guide the hinge pin relative to the single-piece member of the second link. The through-hole in one of the two parallel flanges comprises a flat portion cooperating with a flat section of the hinge pin so as to prevent the hinge pin from rotating relative to the single-piece member of the first link.

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.

A machine having a ballast take-up device for taking up ballast located underneath a track. The take up device has an endless clearing chain guided in a chain channel. In a connecting joint from a transverse channel to a transport channel. There is also a ballast deflector blade pivotable about a pivot axis. Arranged on the ballast deflector blade is a ballast conveyor, designed for ballast transport in the direction towards a pivot axis by means of a conveyor drive. With this, it is possible to expand the operating range of the ballast take-up device, as needed.

A machine for repairing a ballast bed has an undercutter that defines a direction of movement of the repairing machine, and a distributor for dividing a flow of ballast entering from the undercutter into a rear flow of exiting ballast and a separate front flow of exiting ballast. At least one rear screening machine is positioned behind the undercutter in the direction of movement and is fed by the rear flow of exiting ballast. At least one front screening machine is positioned in front of the undercutter and fed by the front flow of exiting ballast, and the distributor has a variator for varying the ratio between the separate first and the second flows of exiting ballast.

A machine for repairing a ballast bed has an undercutter that defines a direction of movement of the repairing machine, and a distributor for dividing a flow of ballast entering from the undercutter into a rear flow of exiting ballast and a separate front flow of exiting ballast. At least one rear screening machine is positioned behind the undercutter in the direction of movement and is fed by the rear flow of exiting ballast. At least one front screening machine is positioned in front of the undercutter and fed by the front flow of exiting ballast, and the distributor has a variator for varying the ratio between the separate first and the second flows of exiting ballast.

A machine for repairing a ballast bed has an undercutter that defines a direction of movement of the repairing machine, and a distributor for dividing a flow of ballast entering from the undercutter into a rear flow of exiting ballast and a separate front flow of exiting ballast. At least one rear screening machine is positioned behind the undercutter in the direction of movement and is fed by the rear flow of exiting ballst. At least one front screening machine is positioned in front of the undercutter and fed by the front flow of exiting ballast, and the distributor has a variator for varying the ratio between the separate first and the second flows of exiting ballast.

A machine for repairing a ballast bed has an undercutter that defines a direction of movement of the repairing machine, and a distributor for dividing a flow of ballast entering from the undercutter into a rear flow of exiting ballast and a separate front flow of exiting ballast. At least one rear screening machine is positioned behind the undercutter in the direction of movement and is fed by the rear flow of exiting ballst. At least one front screening machine is positioned in front of the undercutter and fed by the front flow of exiting ballast, and the distributor has a variator for varying the ratio between the separate first and the second flows of exiting ballast.

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.

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.

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).