Abstract: A rail vehicle has a vehicle frame, supported on track undercarriages, and a vehicle superstructure with at least one driver's cabin. A motive drive is provided and has an electric motor supplied by an electric energy store. In this, it is provided that the energy store has a tempering by use of a liquid dielectric, and that the vehicle superstructure includes a compartment, separated from the driver's cabin, in which the electric energy store is arranged within at least one fire protection cabinet with a dielectric tank located there above.

Abstract: The invention relates to a machine for stabilizing a track, including a machine frame supported on on-track undercarriages and a vertically adjustable stabilizing unit designed to roll on rails of the track by means of unit rollers, the stabilizing unit comprising a vibration exciter with rotating imbalance masses for generating an impact force (FS) acting dynamically in a track plane perpendicularly to a track longitudinal direction and a vertical drive for generating a vertical load acting on the track. In this, it is provided that the vibration exciter comprises at least two imbalance masses which are driven applying a variably adjustable phase shift (??1, ??2). The invention further relates to a method for operating such a machine.

Abstract: In a method of operating a tamping unit of a track maintenance machine, the track maintenance machine having the tamping unit is first provided on a track bed. The tamping unit is displaced relative to the track bed. A driving force, acting on the tamping unit and required for the displacement, and acceleration acting on the tamping unit are determined. A ballast force acting between the tamping unit and the track bed is determined by way of the driving force and the acceleration, and is evaluated.

Abstract: A track recording vehicle for detecting the resilience of a rail track has a machine frame supported on two rail-mounted undercarriages. A first measuring system detects a vertical distance of the rail track under load and a second measuring system detects a vertical distance of the rail track under no load or with reduced load. The first measuring system is coupled to an evaluation device for calculating the course of a first vertical sine and the second measuring system determines a course of a second vertical sine, relative to a common reference base defined by two outer measuring points under load, at an interposed central measuring point without or with reduced load. The evaluation device calculates a subsidence of the rail track under load from the two vertical sines. The track recording vehicle detects a subsidence of the rail track under load in a single measuring run.

Abstract: A track measuring vehicle for recording a track geometry of a track includes a vehicle frame which has rail undercarriages and is mobile on two rails of a track. The vehicle also includes a first measuring base on which are arranged an inertial measuring unit and, for a position determination relative to each rail, at least one contact-less position measuring device. A lowerable second measuring base has measuring running wheels designed to be set upon the rails and is connected to the first measuring base via compensation measuring devices.

Abstract: A method for compaction of a track ballast bed uses a tamping unit including two oppositely positioned tamping tools which are actuated with vibrations and are lowered into the track ballast bed during a tamping operation and moved towards one another with a squeezing motion. A progression of a force acting upon the tamping tool over a path covered by the tamping tool is recorded during a vibration cycle by sensors disposed at the tamping unit for at least one tamping tool. At least one characteristic value is derived therefrom and used to carry out an evaluation of the tamping operation and/or of a quality of the track ballast bed. The tamping unit is thus used as a measuring apparatus during operative use. A device for performing the method is also provided.

Abstract: The invention relates to a method for tamping sleepers of a track by means of a tamping assembly comprising at least two tamping units which have tamping tools lying opposite one another in each case and supported on a lowerable tool carrier, wherein the tamping tools—actuated with a vibration—are lowered into a ballast bed during a tamping operation and squeezed towards one another via squeezing drives. In this, for tamping an obliquely-lying sleeper, the tamping tools or tamping tool pairs in a raised position are moved via a control by means of the squeezing drives in the squeezing direction with different adjustment paths in such a manner that the free ends of the tamping tools or tamping tool pairs rotate approximately about a common vertical rotation axis in order to adapt themselves to the oblique position of the sleeper. With this method according to the invention, the necessity of a separate mechanical rotation device is eliminated.

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-guided permanent way machine is operated by means of a control device in such a way that at least one state variable (Z) of the permanent way machine is determined in dependence on an operating state, and the at least one state variable is compared to at least one pre-defined limit value (GW, GS) for monitoring a derailment safety of the permanent way machine. Thus, the derailment safety of the permanent way machine is determined in accordance with the current operating state and monitored. As a result, the permanent way machine has an expanded operating range and increased performance and thus increased efficiency.

Abstract: The invention relates to a mobile device for correction of a vertical position of a pre-measured track, in particular for a track maintenance machine, including a measuring system which comprises a moving chord as reference base, and including a lifting device for lifting the track to a target level prescribed at a work location by means of the moving chord. In this, the moving chord is defined at two reference locations as to its position relative to a non-corrected area of the track, wherein the work location is arranged behind the reference locations in a working direction. In this manner, the position of the moving chord is defined unambiguously and precisely at all times.

Abstract: A device for welding a rail joint of a track, comprising two rail clamping devices spaced from one another in a rail longitudinal direction which are connected to one another via push rods to press rail ends apart prior to welding. In this, it is provided that at least one rail clamping device is coupled to a transverse displacement device for flush-aligning the rail ends after being pressed apart.

Abstract: The invention relates to a tamping assembly for tamping sleepers of a track, comprising a tamping unit having oppositely positioned tamping tools which are mounted on a lowerable tool carrier and connected in each case to a squeezing drive for generating a squeezing motion, wherein an eccentric drive having an eccentric shaft is provided for generating a vibratory motion. In this, it is provided that each squeezing drive is supported on a console having a ring-shaped housing section which is mounted on an eccentric section, associated with the squeezing drive, of the eccentric shaft.

Abstract: The invention relates to a tamping assembly for tamping sleepers (2) of a track (3), comprising a tamping unit (1) having a lowerable tool carrier (4) and oppositely positioned tamping tools (5), wherein each tamping tool (5) is connected via a pivot arm (6) to a squeezing drive (7) for generating a squeezing motion, and wherein a vibration drive (8) is provided for actuation of the tamping tools (5) with a vibratory motion. In this, it is provided that the vibration drive (8) comprises an electromagnetic actuator (11).

Abstract: The invention relates to a sleeper transport vehicle (1) having a loading area (25) which includes a lower supporting loading plane (7) and an upper supporting loading plane (8), wherein in each loading plane (7,8) a guide (10) is arranged in which pallets (9) are guided in the longitudinal direction of the sleeper transport vehicle (1), wherein, at a front side, a transfer area (26) is arranged into which the guides (10) protrude in order to pass along during a working operation pallets (9) with new sleepers (15) in one loading plane (7, 8) to a further sleeper transport vehicle (1) or loading/unloading vehicle (34) arranged at the front side, and to receive pallets with old sleepers (16) in the other loading plane (7, 8).

Abstract: An on-track work or rescue vehicle for fire-fighting and/or the rescue of persons in tunnels or subway tubes has a drive which can be operated for at least a limited duration without ambient air. A liquid tank is arranged on the work or rescue vehicle. A fan blower with a fluid spraying device is connected to the liquid tank for producing a spray mist. The work or rescue vehicle is a traction vehicle for pulling or pushing other rail vehicles. A work or rescue vehicle of this type can move to a fire source under the protection of the spray mist blown into the tunnel or subway tube and, if required, pull or push a damaged rail vehicle from a danger zone.

Abstract: The invention relates to a method for contactless recording of a track geometry of a track by means of a rail vehicle which is moved along the track on on-track undercarriages (4), wherein profile data of the track extending in transverse direction are compiled by means of a laser scanner. In this, it is provided that, by means of an evaluation device, profile data are evaluated relative to a reference base pre-defined on the rail vehicle in order to derive from this the course of a track central axis and/or a rail. The invention additionally relates to a rail vehicle which comprise an evaluation device configured for carrying out the method. Thus, no further measuring system is required to determine a track position.

Abstract: The invention relates to a track maintenance machine having a tamping unit for tamping sleepers of a track lying in a ballast bed, including a tool carrier which is mounted for vertical adjustment on an assembly frame and on which tamping tools are arranged so as to be squeezable towards one another, wherein the tool carrier is coupled to a vertical adjustment drive actuated by means of a control device. In this, a control circuit is set up for controlling a lowering motion of the tool carrier, the control circuit including a controller, a setting device for the vertical adjustment drive and a measuring device for recording the lowering motion. With this, it is possible to provide an optimal course for the lowering motion.

Abstract: The invention relates to a tamping assembly for tamping sleepers of a track, including a tamping unit having oppositely positioned tamping tools mounted on a vertically adjustable tool carrier, the tamping tools being coupled in each case via a squeezing drive to a vibration drive, wherein each tamping tool comprises a pivot lever rotatable about a pivot axis and at least one tamping tool mount for accommodating at least one tamping tine. In this, a first squeezing drive is coupled directly to the vibration drive and articulatedly connected to a first pivot lever, and a second squeezing drive is coupled to the vibration drive via a separate coupling unit and articulatedly connected to a link, mounted on the tool carrier, as well as to a second pivot lever. In this manner, the tamping unit can be configured in a very compact way with squeezing drives being arranged one below the other, wherein forces and momentums occurring during operation can be easily controlled.

Abstract: The invention relates to a method for tamping sleepers of a track by means of a tamping assembly comprising at least two tamping units which have tamping tools lying opposite one another in each case and supported on a lowerable tool carrier, wherein the tamping tools—actuated with a vibration—are lowered into a ballast bed during a tamping operation and squeezed towards one another via squeezing drives. In this, for tamping an obliquely-lying sleeper, the tamping tools or tamping tool pairs in a raised position are moved via a control by means of the squeezing drives in the squeezing direction with different adjustment paths in such a manner that the free ends of the tamping tools or tamping tool pairs rotate approximately about a common vertical rotation axis in order to adapt themselves to the oblique position of the sleeper. With this method according to the invention, the necessity of a separate mechanical rotation device is eliminated.

Abstract: A sleeper transport vehicle has a loading area which includes a lower supporting loading plane and an upper supporting loading plane, wherein in each loading plane a guide is arranged in which pallets are guided in the longitudinal direction of the sleeper transport vehicle, wherein, at a front side, a transfer area is arranged into which the guides protrude in order to pass along during a working operation pallets with new sleepers in one loading plane to a further sleeper transport vehicle or loading/unloading vehicle arranged at the front side, and to receive pallets with old sleepers in the other loading plane. In this, it is provided that in each loading plane a pushing device for pushing the pallets along the guide is designed as at least one circulating chain protruding into the transfer area, and that coupling elements are arranged on the pallets for temporary coupling to the chain.