Abstract: A rail tool-holder cart (1) comprises a “T”-shaped support frame (2), a tool-holder arm, (12) rotatable about a vertical axis and tiltable between an upper position and a lower position and having a coupling interface for a tool (17, 17?), a spring (19), which pushes the tool-holder arm permanently towards the upper position, so as to compensate at least one part of the weight of the tool (17, 17?), as well as adjustment means (20) for adjusting the spring thrust (19).

Abstract: The present disclosure relates to a rail vehicle that includes a chassis and a rail milling assembly coupled to the chassis. The rail milling assembly includes a bracket for coupling the rail milling assembly to the chassis and a milling workhead forming a portion of the rail milling assembly. The milling workhead including a spindle and a cutter depending downwardly from the spindle. The spindle and cutter are driven by a spindle motor. The milling workhead further includes a cylinder rod disposed between the spindle motor and the spindle to thereby bias the cutter towards the rail during operation.

Abstract: The invention relates to a method and a machine tool for hard finishing toothed gearing, particularly internally toothed portions (3), in which method a toothed hard finishing tool (W) which rotates about its axis of rotation is brought into rolling machining engagement with the machined toothed gearing in one pass or in a plurality of passes of differing radial infeed depth under an advance motion with a direction component parallel to the axis of rotation (C) of the machined toothed gearing and under a non-null axis crossing angle, and material is removed from the machined toothed gearing with a tooth flank region (4a) of the machine tool gearing with tooth thickness increasing in the tooth trace direction from the end face (5) facing the machined toothed gearing.

Abstract: A cold saw module may be a rail saw module that includes a cold saw configured to cut a railway rail along a cutting path, a rail alignment clamp configured to grip the railway rail near the cutting path, a feed actuator to drive the cold saw along the cutting path, and a module coupling element configured to selectively couple to a mating module coupling element of an articulated arm and/or a tool adapter. Cold saw modules may be used to cut metal workpieces such as a railway rail. Cutting a railway rail may include positioning the cold saw module at a cutting site along the railway rail installed in a railway, clamping the cold saw module to the railway rail, and cutting the railway rail at the cutting site with the cold saw module while the cold saw module is clamped to the cutting site.

Abstract: A method of repairing a defect in a damaged rail of a railroad track comprises positioning a rail profiling device on the rails of the railroad track proximate a defect; securing the rail profiling device to the railroad; adjusting its grinder according to a selected value of wheel cone angle to create a profiled running surface over a portion of the damaged rail; creating a median zone using the grinder to remove material from the damaged rail adjacent the defect at a depth corresponding to at least a maximum depth of the defect; creating an incline from the top of the rail and leading to the median zone and one incline leaving the median zone to the top of the rail by using the grinder to grinding material off the damaged rail.

Abstract: A cold saw module may be a rail saw module that includes a cold saw configured to cut a railway rail along a cutting path, a rail alignment clamp configured to grip the railway rail near the cutting path, a feed actuator to drive the cold saw along the cutting path, and a module coupling element configured to selectively couple to a mating module coupling element of an articulated arm and/or a tool adapter. Cold saw modules may be used to cut metal workpieces such as a railway rail. Cutting a railway rail may include positioning the cold saw module at a cutting site along the railway rail installed in a railway, clamping the cold saw module to the railway rail, and cutting the railway rail at the cutting site with the cold saw module while the cold saw module is clamped to the cutting site.

Abstract: An apparatus for surface finishing a flange surface of a flange of a pipe includes a frame assembly, a drive assembly coupled to the frame assembly, and a bracket assembly coupled to the frame assembly. The flange is clamped between the frame assembly and the drive assembly. The drive assembly circumferentially translates the apparatus around the pipe. A power tool is coupled to the bracket assembly to perform the surface finishing operation on the flange surface of the flange.

Abstract: Methods and apparatus for orienting and operating grinding motors and their associated mechanical parameters for rail applications are described. A method for determining a parameter for operation of grinding motors on a grinding vehicle, may include: receiving a rail profile, comparing the rail profile with a target rail template to provide a comparison result, and determining, by a processor, based on the comparison result, one or more of a grinding motor's orientation, power, and speed.

Abstract: A milling system for milling a track surface with at least one rotatable milling plate. A modular blade system for each milling plate allows individual blades to be removed and replaced when an individual blade becomes dull or broken. The blade system also allows the milling plates to be oriented in both Type 2 and Type 3 configurations depending upon track surroundings and the presence of encumbrance. The milling plates can be mounted to a positioning assembly for adjusting the relative distance between the milling plate and the track surface as well as the angle at which the milling plate engages the track surface. The milling system can include a depth guide so as to physically prevent the milling plate from cutting too deeply into the track surface.

Abstract: A tangential grinding machine slidable on rails to be ground includes a base structure mounted on wheels slidable on the rails to be ground; a grinding unit freely slidable along the cross-members of the base structure, the grinding unit having a frame rigidly movable vertically relative to the base structure towards and away from the rail, the frame being rigidly coupled to at least two longitudinally aligned plates supporting a grinding wheel with a rotatable axis transverse to the rail longitudinal axis; and a bar hinged at its ends to the base structure and to the grinding unit respectively, there being connected to the frame supporting the plates a gear motor provided with a vertical axis worm gear, the end of which rests on the grinding unit, a control unit being associated with the gear motor to control frame descent following wear of the grinding wheel.

Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail.

Abstract: The invention relates to a method of profiling a running surface of a laid rail by means of a processing vehicle, in particular in the region of a switch, comprising placing a first copying probe element displaceable transversely to the rail in contact with the running edge or the inner side edge and machining the rail.

Abstract: A portable cutting apparatus (1) for the in situ truncation of railway rails (9) comprises a rail saw (2) having a motor (3) with a cyclic movement output member (4), a plate holder (5) adapted to carry an abrasive blade (6) and a movement transmitter (7) engaging the motor output member (4) and the plate holder (5) to set the plate holder (5) in a cyclic movement, a linkage structure (27) with a rail connector (29) and a saw connector (31) and a sawing position alternator (45) to autonomously and alternately move the plate holder (5) to and fro.

Abstract: Methods and apparatus for orienting and operating grinding motors and their associated mechanical parameters for rail applications are described. A method for determining a parameter for operation of grinding motors on a grinding vehicle, may include: receiving a rail profile, comparing the rail profile with a target rail template to provide a comparison result, and determining, by a processor, based on the comparison result, one or more of a grinding motor's orientation, power, and speed.

Abstract: A portable apparatus (1) for the tooling of a workpiece (9) comprises a motor (3) with a cyclic movement output member (4), a tool holder (5) adapted to carry a tool (6) and a movement transmitter (7) engaging the motor output member (4) and the tool holder (5) to set the tool holder (5) in a cyclic movement, wherein the movement transmitter (7) comprises a transmission ratio adjuster (8) that, in response to a preset reduction of the cyclic movement speed (?_m) of the output member (4) of the motor, increases the transmission ratio (?_m/?_ph) thereby reducing the cyclic movement speed (? ph) of the tool holder (5) with respect to the cyclic movement speed (?_m) of the output member (4) of the motor (3).

Abstract: A portable apparatus (1) for the tooling of a workpiece (9) comprises a motor (3) with a cyclic movement output member (4), a tool holder (5) adapted to carry a tool (6) and a movement transmitter (7) engaging the motor output member (4) and the tool holder (5) to set the tool holder (5) in a cyclic movement, wherein the movement transmitter (7) comprises a transmission ratio adjuster (8) that, in response to a preset reduction of the cyclic movement speed (?_m) of the output member (4) of the motor, increases the transmission ratio (?_m/?_ph) thereby reducing the cyclic movement speed (? ph) of the tool holder (5) with respect to the cyclic movement speed (?_m) of the output member (4) of the motor (3).

Abstract: A portable cutting apparatus (1) for the in situ truncation of railway rails (9) comprises a rail saw (2) having a motor (3) with a cyclic movement output member (4), a plate holder (5) adapted to carry an abrasive blade (6) and a movement transmitter (7) engaging the motor output member (4) and the plate holder (5) to set the plate holder (5) in a cyclic movement, a linkage structure (27) with a rail connector (29) and a saw connector (31) and a sawing position alternator (45) to autonomously and alternately move the plate holder (5) to and fro.

Abstract: A rail consist having at least one propulsion car having traction motors and at least one working car having working motors. Energy storage units are provided on the consist to provide power to the traction motors and the working motors. The energy storage units provide sufficient power for work mode, travel speeds and curve characteristics of the consist. The use of the energy storage units provides safety, environmental and operational benefits.

Abstract: The present disclosure concerns embodiments of an improved knife sharpener. In particular embodiments, the knife sharpener has an elongated sharpening member, which can be, for example, an abrasive sharpening rod. The sharpening rod can be made of any of various suitable materials, such as ceramic, porcelain, stone, diamond. The sharpening member extends through a sharpening guide, which is movable in both directions along the length of the sharpening member. The sharpening guide defines at least one guide slot for receiving a knife blade to be sharpened. The guide slot is configured to position a facet of the knife blade in sliding contact with the sharpening member and at a predetermined angle with respect to the sharpening member.

Abstract: A railway grinding system is capable of grinding a frog, another switch, or another railway section of interest in situ over a precisely defined path that is unaffected by the geometry of the railway section to be ground. The system includes a frame providing the reference path and a grinding machine movable along the reference path. The grinding tool preferably has at least four degrees of freedom with respect to the reference frame. Versatility can be further enhanced by permitting one grinding tool, such as a cup grinder configured to grind a generally horizontal surface of the railway, to be replaced with another grinding tool, such as a flange grinder configured to grind a generally vertical surface of the railway. The frog grinder can perform either single-event reconditioning grinding or periodic maintenance grinding.

Abstract: A device for the continuous reprofiling of the rails of railroads includes at least one abrasive rail reprofiling unit (2) guided along the railroad tracks and comprising at least one abrasive disk (3) that can be pressed against a rail (1). This device notably includes at least one abrasive-waste pickup (20) having at least one segment forming a collection port (21). This segment is placed in the immediate vicinity of at least one abrasive disk (3) and into the geometric axis (41) of the major waste jet (40) produced during operation of this abrasive disk (3). The segment (21) simultaneously cooperates with means for transporting the waste. Moreover, each waste pickup (20) includes elements for reflecting and absorbing the kinetic and thermal energy that allow the formation of agglomerations of matter on the pickup to be avoided.

Abstract: An apparatus having a mounting body, a support having a first end and a second end. The first end of the support being pivotally secured to the mounting body for pivotal movement about a substantially horizontal primary pivot axis. A rail grooming head mounted to the second end of the support.

Abstract: A system for the grinding of unencumbered and encumbered sections of rail includes a locomotive that pulls a first and a second grinding module. The first grinding module is movable between a first and a second position. In the first position, the first grinding module is presented at angle enabling grinding of unencumbered section of rail while in the second position, the first grinding module is presented at an able enabling grinding of the encumbered section of rail. The locomotive continues in non-stop forward motion while the first grinding module is moved back and forth between its first and second positions. The second grinding module is generally used only for grinding of encumbered rail sections and is used simultaneously with the first grinding module in its second position.

Abstract: A wheeled trolley carries various tools across an object to be worked. A track attaches directly to the work and simultaneously isolates the tool from the work. A standard connection to the trolley readily accommodates a variety of diverse tools, using a keyway or the like to ensure accurate and repeatable placement of the tools. A preferred contouring guide allows a tool to be moved through an arc, where the focal point of the arc may be set to produce an infinite variety of custom shapes, bevels or angles of cut. An upper stop is provided which readily sets the break line between surface finish and edge contour. An adjustable tool carriage allows control over both position and force, including preloading a work tool with force. Resilience is incorporated into the apparatus to accommodate diverse hardness and abrasion characteristics, and, in at least one embodiment, to enable the track to accurately follow a warped or sagging work piece.

Abstract: One or more high angle grinding units are supported by a carriage mountable on the underside of a rail grinding vehicle. Each grinding unit is attached to the carriage in a manner enabling controllable movement of the grinding units laterally, vertically, and angularly, with respect to the rails, so that a grinding stone rotated by the grinding unit can be operated to grind between a railhead and a closely adjacent rail structure to reform the gauge side of the railhead and the field side of the closely adjacent structure.

Abstract: A method and apparatus for directing a spark stream generated by contact between a rotating grinding stone and a railhead away from nearby combustible material, wherein the grinding stone is tilted at an angle such that only one of the leading and trailing edges of the grinding stone contacts the railhead during the grinding operation. The leading or trailing edge is selected such that the spark stream is directed away from the nearby combustible material. The apparatus can include tilting assembly, associated with a grinding unit, including a grinding stone, which is controllable to tilt the grinding unit at an angle to the railhead during the grinding operation such that only one of the leading and trailing edges of the grinding stone contacts the railhead during the grinding operation.

Abstract: The invention relates to a method for grinding at least the running surface of a rail (1), especially of a railway rail, by producing a relative movement between a grinding wheel (12) having a profile that mates the profile of the running surface, and a rail (1) in the longitudinal direction thereof. The aim of the invention is to avoid an overheating when large amounts of material are removed. To this end, the axis (21) of the grinding wheel (12) includes, with a plane (22) that is perpendicular to the longitudinal direction of the rail (1), an angle ? that deviates from 0°.

Abstract: A rail grinding machine comprises a machine frame having guide wheels running on the rail, a follower frame mounted on the machine frame, the follower and machine frames being pivotally connected for pivoting about an axis extending in the longitudinal direction, and the follower frame having sensing rollers running on the rail of the track. A rail grinding device is mounted on the follower frame for adjustment relative to the rail, a drive motor for driving the rail grinding device is vertically adjustably mounted on a vertical guide connected to the machine frame, and a transmission connects the drive motor to the rail grinding device.

Abstract: The invention relates to a method for re-profiling the running surface of a rail, preferably the convex portion of the rail head cross-profile of a rail, especially a railway rail, by peripheral milling. The aim of the invention is to obtain a profile that meets the requirements and has few corrugations. To this end, for producing the profile in a single peripheral grinding step, more than five, preferably nine milling tracks are produced that are oriented in parallel to the longitudinal direction of the rail. Optionally, the running surface, preferably the convex portion of the rail head cross-profile including the running surface is ground afterwards.

Abstract: A rail grinding apparatus for use in grinding rails. The rail grinding apparatus includes a transport vehicle and a rail grinding unit. The transport vehicle is capable of moving along the rails or a conventional road. The rail grinding unit is capable of grinding at least one of the rails. The rail grinding unit is movable between a stored position on the transport vehicle and a deployed position on the rails.

Abstract: A rail grinding machine comprises a machine frame having guide wheels running on the rail, a follower frame mounted on the machine frame, the follower and machine frames being pivotally connected for pivoting about an axis extending in the longitudinal direction, and the follower frame having sensing rollers running on the rail of the track. A rail grinding device is mounted on the follower frame for adjustment relative to the rail, a drive motor for driving the rail grinding device is vertically adjustably mounted on a vertical guide connected to the machine frame, and a transmission connects the drive motor to the rail grinding device.

Abstract: The grinding machine comprises a grinding head with a rotary abrasive tool, carried by a chassis equipped, at its ends, with rollers for running and guiding on the rail that is to be ground. A balancing assembly, resting on the other rail of the track, is mounted to pivot on the chassis, also provided with an orientable maneuvering arm. To rotate the grinding tool, an internal combustion engine is fixed to a support articulated to the balancing assembly, the horizontal output shaft of the engine being connected by a transmission assembly to the grinding head. The machine makes it possible to grind the profile of the head of the rail through an angle of 180° while at the same time avoiding excessive inclination of the engine.

Abstract: A portable multi-purpose rail grinding machine for grinding field welds, switch points and frogs, including a hydraulically driven grinder with a disk-shaped stone adjustably mounted on a frame for setting the grinding stone between horizontal and vertical positions, an adjustable rail assembly including a hook-shaped guide member and a flanged wheel guide member, one of which may be selectively chosen to guide movement along a rail, and adjustably positionable handlebars for allowing the operator to control and manipulate the grinder from an ergonomic upright position.

Abstract: The invention relates to a method for grinding at least the running surface of a rail (1), especially of a railway rail, by producing a relative movement between a grinding wheel (12) having a profile that mates the profile of the running surface, and a rail (1) in the longitudinal direction thereof. The aim of the invention is to avoid an overheating when large amounts of material are removed. To this end, the axis (21) of the grinding wheel (12) includes, with a plane (22) that is perpendicular to the longitudinal direction of the rail (1), an angle a that deviates from 0°.

Abstract: A system for the grinding of unencumbered and encumbered sections of rail includes a locomotive that pulls a first and a second grinding module. The first grinding module is movable between a first and a second position. In the first position, the first grinding module is presented at angle enabling grinding of unencumbered section of rail while in the second position, the first grinding module is presented at an able enabling grinding of the encumbered section of rail. The locomotive continues in non-stop forward motion while the first grinding module is moved back and forth between its first and second positions. The second grinding module is generally used only for grinding of encumbered rail sections and is used simultaneously with the first grinding module in its second position.

Abstract: A rail grinding apparatus for use in grinding rails. The rail grinding apparatus includes a transport vehicle and a rail grinding unit. The transport vehicle is capable of moving along the rails or a conventional road. The rail grinding unit is capable of grinding at least one of the rails. The rail grinding unit is movable between a stored position on the transport vehicle and a deployed position on the rails.

Abstract: A grinder support apparatus for supporting a grinder on a railroad rail. The apparatus comprises a support wheel adapted to roll on a top surface of the rail, and a frame having the support wheel connected thereto. The frame comprises a handle for a user to move the support wheel and frame along the rail and a support section for removably connecting the grinder to the frame. A grinding wheel of the grinder can contact a surface of the rail as the support wheel contacts the top surface.

Abstract: A cutting apparatus for cutting a rail or other elongated workpiece includes a rotatable blade for cutting the rail, a blade cover for covering the blade, an engine (or motor) for driving the blade, and a frame for supporting the blade, the blade cover and the driver. The cutting apparatus further includes link mechanisms. One link mechanism supports the blade and the blade cover relative to the frame and permits the blade cover to move while maintaining a predetermined attitude during cutting. Therefore, the blade cover moves vertically and avoids hitting obstacles. Another link mechanism moves the driver while maintaining a predetermined attitude of the driver. Therefore, the driver remains level during cutting.

Abstract: A main body 1 of a grinding assembly for use in a track rail joint grinding apparatus comprising a pair of grinding assemblies A, A' rotating around vertical shafts 5, 5' in mutually opposite directions so as to grind one and the other width-wise halves of a track rail R, comprises grinding blade supporting portions 3A to 3C which each constitute a recess edge 2 complementarily engaging with a head Ra of the track rail R, said grinding blade supporting portions being arranged at equiangular distances in the rotational direction of the vertical shaft 5, 5', and a suitable number of grinding blades 4a to 4h being detachably attached to grinding blade attaching portions 6a to 6h of each of the grinding blade supporting portions 3A to 3C.

Abstract: A grinding stone for grinding a railhead surface of a rail includes abrasive material. The abrasive material has a first side surface and an opposed second side surface. The first and second sides surfaces are joined by a circumferential surface. The circumferential surface is transversely disposed with respect to at least the first side surface. The abrasive material presents a bevelled grinding surface extending from a substantially circular locus of points on the second side surface to a substantially circumferential locus of points on the circumferential surface. A method of re-profiling the railhead surface of a rail includes the steps of:rotating at least one grinding stone;bringing the bevelled grinding surface of the grinding stone into contact with the railhead surface; andadvancing the grinding stone along the rail.

Abstract: A fine grinding device for the continuous reprofiling in situ of the surface of the head of at least one rail of a railway track includes at least one fine grinding unit per rail. Each one of these fine grinding units carries a beam (1) on which are mounted rotatably at least two pulleys (4, 8) situated slightly above the rail (3) and around which is arranged an endless abrasive brand (5) working in the longitudinal direction of the rail. Between these two pulleys (4) there is a biasing shoe (12) that contacts the rail over a rectangular surface and that is subjected to the action of a jack supported by the beam (1) and acting on the shoe (12) with a determined force for applying the abrasive band (5) against the head of the rail (3) without any vibration. At least one of the pulleys (4) is driven in rotation by a motor to set the abrasive band (5) into motion.

Abstract: Apparatus for grinding rails of a track, includes a carrier frame which has roller-type tracers adapted for mobility on the track and is swingably mounted to a support frame for rotation about a pivot axis oriented longitudinally in direction of the rail. The support frame is provided with rollers which can roll on the track, with each roller and each tracer having a roller tread. A guide member which is adapted for bearing upon a vertical side of the rail head is secured to the support frame and adjustable with respect to the carrier frame wherein at a horizontal disposition, the rotational axis of each tracer is in parallel relationship with the rotational axis of each roller, with the roller tread surface on contact with the rail defining a roller contact area which in the horizontal disposition of the tracer is disposed at a vertically elevated position in relation to a roller contact area defined by the tracer tread surface on contact with the rail.

Abstract: A remote appliance for supporting a tool for performing work at a worksite on a substantially circular bore of a workpiece and for providing video signals of the worksite to a remote monitor comprising: a baseplate having an inner face and an outer face; a plurality of rollers, wherein each roller is rotatably and adjustably attached to the inner face of the baseplate and positioned to roll against the bore of the workpiece when the baseplate is positioned against the mouth of the bore such that the appliance may be rotated about the bore in a plane substantially parallel to the baseplate; a tool holding means for supporting the tool, the tool holding means being adjustably attached to the outer face of the baseplate such that the working end of the tool is positioned on the inner face side of the baseplate; a camera for providing video signals of the worksite to the remote monitor; and a camera holding means for supporting the camera on the inner face side of the baseplate, the camera holding means being adj

Abstract: The rail cutting device includes a base having a pair of jaws fastened together about the head of a rail with a fastening member and an elongate member extending upward from the rail and further comprises a pivot linkage which has one end pivotally attached to the top end of the support member and other end pivotally attached to an elongate support column having a pair of handle members at the top end of the column and a cutting member at the bottom end of the column, the cutting member being actuatable by a hydraulic motor and the support column being of a sufficient length such that the handle members are essentially at or above the waist of a user standing essentially erect and operating the cutting device.

Abstract: In the proposed process of machining the top surface of a rail by a circumferential grinding by means of at least one abrasive product, which is moved along the rail and urged against the top surface of the rail and rotates about an axis of rotation which includes an acute angle with the longitudinal direction of the rail, desirable grinding conditions are ensured in that a freely rotatable abrasive is caused to roll and slide on the top surface is caused to roll and slide on the top surface of the rail in frictional contact therewith and thus to grind said top surface.

Abstract: A grinding apparatus of a welded residue on a seam of a rail head portion including a rail, a machine table capable of moving forward and backward along the rail, an apparatus base erected on a distal end side of the machine table, a first support disk board mounted on the apparatus base and capable of moving vertically by electric power or an operator's hand, a second support disk board mounted on the first support disk board and capable of moving vertically by electric power or an operator's hand, a grinding drive motor mounted on a front surface of the second support disk board and capable of rotating about a horizontal axis, a cutter unit mounted on the front surface of the second support disk board and capable of rotating about the horizontal axis, the cutter unit being operatively connected to the grinding drive motor, an engaging portion formed on the cutter unit and adapted to engage a head portion of the rail, and a grinding edge disposed on the engaging portion and adapted to grind an upper surface,

Abstract: A rail grinding machine for grinding rails of a track includes a machine frame with rollers for support on both rails of the track and a swivel drive for swingably mounting a carrier frame to the machine frame for rotation about a pivot axis which extends longitudinally in direction of the track. A grinder is adjustably secured to the carrier frame in an area of one rail, with a drive motor for supplying energy to the swivel drive and the grinder being secured to the machine frame at an area distant to the carrier frame. The distance of the carrier frame and its pivot axis from a support roller located opposite to the grinder is reducible by a length compensation unit which includes a pressure-exerting element for applying in opposition to the distance reduction a force by which the grinder is pressed against a rail head inner flank of the rail being ground.

Abstract: A mobile rail grinding machine comprises a machine frame extending in a longitudinal direction, and undercarriages supporting the machine frame on the track rails for movement in an operating direction. A mounting frame is supported on the track rails by flanged wheels, and a drive vertically adjustably connects the mounting frame to the machine frame. At least one rail head grinding unit is arranged on the mounting frame and comprises an abrasive belt having opposite ends, a storage spool holding one of the belt ends and a collecting spool holding the opposite belt end whereby the abrasive belt may be reeled off the storage spool and onto the collecting spool, and a pressure element arranged to press the abrasive belt against the surface area of the rail head off which the irregularities are to be ground.

Abstract: The reprofiling installation includes, arranged below a railway carriage, a milling device consisting of two frames (8, 9) linked together. These frames (8, 9) of differing lengths and guided by the track, carry each one a milling unit (22, 24). The installation further includes track heating means (31) located in front of each milling unit (22, 24), means for cooling the tracks behind each milling unit, as well as units for measuring the deformation of the track.

Abstract: The reprofiling installation includes, arranged below a railway carriage, a milling device consisting of two frames (8, 9) linked together. These frames (8, 9) of differing lengths and guided by the track, carry each a milling unit (22, 24). The installation further includes a track heating unit (31) located in front of each milling unit (22, 24), and a unit for cooling the tracks behind each milling unit, as well as units for measuring the deformation of the track.