A maintenance vehicle has a vehicle frame, supported on on-track undercarriages, on which are arranged two side walls extending in a longitudinal direction of the vehicle and adjustable with respect to one another and relative to the vehicle frame in a transverse direction of the vehicle by way of drives. The vehicle is equipped with at least one load crane which is displaceable on a crane guide that extends in the transverse direction of the vehicle. The crane guide, designed to be elongatable in the transverse direction of the vehicle, is connected at each end to a side wall.

The invention relates to a rail vehicle (1) having a machine frame (2) supported on on-track undercarriages (4), on both sides of which are arrangedin the longitudinal direction (3) of the rail vehiclecrane rails (8) for a mobile gantry crane (11). In this, for lifting or lowering of the gantry crane (11), a crane rail section (12) of the respective crane rail (8) is arranged to be vertically adjustable by a drive (18). In this manner, contrary to the prior art, a higher gantry crane (11) can be used without violating a given clearance profile during transfer travel.

The invention relates to a rail vehicle (1) having a machine frame (2) supported on on-track undercarriages (4), on both sides of which are arrangedin the longitudinal direction (3) of the rail vehiclecrane rails (8) for a mobile gantry crane (11). In this, for lifting or lowering of the gantry crane (11), a crane rail section (12) of the respective crane rail (8) is arranged to be vertically adjustable by a drive (18). In this manner, contrary to the prior art, a higher gantry crane (11) can be used without violating a given clearance profile during transfer travel.

A crane includes a jib which is mounted on the crane structure so as to be rotatable about a bearing point, a counterweight arrangement which can be positioned variably in relation to the bearing point, and a hoisting cable which runs out from a hoisting winch and is guided via the jib. A counterweight adjustment device, which is coupled to the counterweight arrangement, includes a lever element mounted rotatably about a pivot point, a hoisting cable guide arranged in the course of the hoisting cable between the hoisting winch and an upper jib section, with a first deflecting pulley arrangement mounted on the jib and a second deflecting pulley arrangement mounted on the lever element, wherein the hoisting cable is guided in an alternating manner via the first and the second deflecting pulley arrangement, and a coupling element acting on the lever element and connected to the counterweight arrangement.

The invention relates to a method for unloading, transporting and installing a railway track, which does not require the rail-carrying train to be brought closer after each cycle of unloading continuous welded rail (CWR), the train remaining parked at the end of the track already laid until all the CWR has been completely unloaded. According to the invention, the method consists of: fastening two rails to a crane of an unloading wagon and moving same through windows along the wagon, facilitating the descent thereof to the track; transferring the rails to a machine for pulling and positioning which moves along, leaving the rails supported on transport elements that move along the track already laid; transferring the rails from the track already laid to a section of sleepers; and moving the rails to their final position, using sliding elements placed on the sleepers.

The invention relates to a method for unloading, transporting and installing a railway track, which does not require the rail-carrying train to be brought closer after each cycle of unloading continuous welded rail (CWR), the train remaining parked at the end of the track already laid until all the CWR has been completely unloaded. According to the invention, the method consists of: fastening two rails to a crane of an unloading wagon and moving same through windows along the wagon, facilitating the descent thereof to the track; transferring the rails to a machine for pulling and positioning which moves along, leaving the rails supported on transport elements that move along the track already laid; transferring the rails from the track already laid to a section of sleepers; and moving the rails to their final position, using sliding elements placed on the sleepers.

A method for renewal of a track includes picking up a plurality of old track panels using a crane jib projecting over the track from a train end of a work train and depositing the old track panels on the work train, thus creating a renewal gap delimited by a gap beginning and a gap end. New ballast is introduced with the aid of the crane jib into the gap end of the renewal gap. Subsequently, a new track panel pre-deposited on the work train is placed by the crane jib on the graded ballast of the gap end. A work train for renewal of a track is also provided.

A method for renewal of a track includes picking up a plurality of old track panels using a crane jib projecting over the track from a train end of a work train and depositing the old track panels on the work train, thus creating a renewal gap delimited by a gap beginning and a gap end. New ballast is introduced with the aid of the crane jib into the gap end of the renewal gap. Subsequently, a new track panel pre-deposited on the work train is placed by the crane jib on the graded ballast of the gap end. A work train for renewal of a track is also provided.

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.

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.