The method according to the invention and a device suitable therefor are used for controlling various device units on a rail vehicle by means of lateral copying. By additionally using available information from the track channel (12), for example, of check rails (30) or wing or switch rails (31, 33), device units for machining and/or analyzing laid tracks (10) can more precisely follow the actual rail profile, in particular in the region of rail gaps or railroad crossings. The lateral copying of the rails (10) and the copying of the rest of the track channel (12) takes place with at least one dual-action or a plurality of single-action or dual-action scanning or sensor units (20).

The method according to the invention and a device suitable therefor are used for controlling various device units on a rail vehicle by means of lateral copying. By additionally using available information from the track channel (12), for example, of check rails (30) or wing or switch rails (31, 33), device units for machining and/or analyzing laid tracks (10) can more precisely follow the actual rail profile, in particular in the region of rail gaps or railroad crossings. The lateral copying of the rails (10) and the copying of the rest of the track channel (12) takes place with at least one dual-action or a plurality of single-action or dual-action scanning or sensor units (20).

An improved process for repair of worn and damaged surfaces of railway structures such as frog and diamond transition surfaces, rail head surfaces and wheels. A worn or damaged surface is prepared using a robotically-controlled laser to melt or gouge away metal using controlled laser energy and air pressure to remove existing worn or damaged surfaces. The process further utilizes laser cladding, laser weld overlaying, or laser additive manufacturing, of formulated powder, wire or stick welding material to worn surfaces that have been prepared for material build-up to original dimensions and similar metallurgical properties.

An improved process for repair of worn and damaged surfaces of railway structures such as frog and diamond transition surfaces, rail head surfaces and wheels. A worn or damaged surface is prepared using a robotically-controlled laser to melt or gouge away metal using controlled laser energy and air pressure to remove existing worn or damaged surfaces. The process further utilizes laser cladding, laser weld overlaying, or laser additive manufacturing, of formulated powder, wire or stick welding material to worn surfaces that have been prepared for material build-up to original dimensions and similar metallurgical properties.

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.

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.

A welding unit for welding rails of a track has a unit lower edge forming a lower boundary of the welding unit, with regard to a vertical, and a shearing device provided for removing a weld bead. A rail base section of the shearing device is designed to be lowered, relative to the welding unit, by way of a drive from a rest position situated above the unit lower edge into a shearing position situated below the unit lower edge. Thus, the welding operation can be carried out without lifting the rails from the sleepers.

A welding unit for welding rails of a track has a unit lower edge forming a lower boundary of the welding unit, with regard to a vertical, and a shearing device provided for removing a weld bead. A rail base section of the shearing device is designed to be lowered, relative to the welding unit, by way of a drive from a rest position situated above the unit lower edge into a shearing position situated below the unit lower edge. Thus, the welding operation can be carried out without lifting the rails from the sleepers.

Systems and methods for a first rail grinding machine and a second rail grinding machine can be used to enhance specialized rail grinding. A first rail grinding machine can detect, process, and communicate a portion of track rail needing specialized grinding to a second rail grinding machine that can process and display a detected portion of rail requiring specialized rail grinding and display the portion of rail as a virtual image to an operator. A displayable image allows an operator to perform specialty rail grinding without the need to be physically present at the location for specialized rail grinding.

The system described herein relates to machining the running surface of a rail by means of at least one rotating, chip-removing shaping tool which can be moved along the rail and can be pressed at least against its running surface. In order to create advantageous design conditions, it is proposed that after the machining with the chip-removing shaping tool at least one rolling body which is adapted to the shape-machined rail surface is rolled over the rail, with cold deformation of the running surface of the rail, in order to level out unevenness of the running surface of the rail.