EP1950348B1 - Device and method for reshaping rails - Google Patents
Device and method for reshaping rails Download PDFInfo
- Publication number
- EP1950348B1 EP1950348B1 EP07001837A EP07001837A EP1950348B1 EP 1950348 B1 EP1950348 B1 EP 1950348B1 EP 07001837 A EP07001837 A EP 07001837A EP 07001837 A EP07001837 A EP 07001837A EP 1950348 B1 EP1950348 B1 EP 1950348B1
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- EP
- European Patent Office
- Prior art keywords
- rail
- chamfer
- chamfers
- assigned
- tracks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/13—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by milling
Definitions
- FIG. 1 shows the cross section of a rail 1, as it is commonly used for railways or full tracks and is for example a Vignol rail according to the standard S49DIN.
- the rail 1 comprises a rail web 2, which is arranged centered on a rail foot 3 and at whose rail foot 3 opposite end of a rail head 4 is provided.
- the rail head 4 has a convex cross-sectional area 5, which comprises a driving mirror 12 and a running edge 13, on which runs the wheel of a rail vehicle, in particular a railway. Wear can lead to deformation of the convex cross-sectional area 5 of the rail head 4. Such wear may require reprofiling make, so that the convex cross-sectional area 5 of the rail head 4 again reaches the original state, ie the original cross-sectional shape, in the best possible approximation.
- the cutters 17 are preferably arranged such that the milling tracks 15 formed by them overlap as much as possible, so that a chamfer between the milling tracks can be avoided or kept small.
- the cutters 17 for adjacent profile areas are preferably arranged offset from one another. That is, in plan view of the device 16, the cutters 17 intersect (as in FIG FIG. 4 shown).
- the drive units 18, one of which is associated with a cutter 17, 17 ', are preferably designed as hydraulic motors, each comprising a pump, not shown, and a hydraulic line, not shown.
- the pump has a power of 7 kW.
- the drive units 18 can also be designed as electric motors of the same power.
- the cutters 17, 17 ' are preferably driven by the drive units 18 so that they rotate at the same speed.
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Nachprofilieren einer Schiene gemäss Oberbegriff des Anspruchs 1 und ein Verfahren zum Nachprofilieren einer Schiene gemäss Oberbegriff des Anspruchs 15.The invention relates to a device for reprofiling a rail according to the preamble of
Zum Nachprofilieren verschlissener Schienen, wie beispielsweise Eisenbahnschienen oder Strassenbahnschienen, werden üblicherweise Schleifmaschinen mit flachen Schleifkörpern in Form von Schleiftöpfen eingesetzt. Ein Schleiftopf kann üblicherweise zum Abtragen von Schienenmaterial in einer Höhe von bis zu 0,4 mm eingesetzt werden, bis der Verschleiss eintritt und ein Austauschen des Schleiftopfes erforderlich macht. Da beim Nachprofilieren üblicherweise mehr als 0,4 mm Schienenmaterial zu entfernen sind, sind mit einer somit Schleifmaschine mehrere Durchgänge erforderlich. Auch führt der Einsatz einer Schleifmaschine zu Funkenwurf.For re-profiling worn rails, such as railroad tracks or tram tracks, grinding machines with flat grinding wheels in the form of cup wheels are commonly used. A grinding cup can usually be used to remove rail material at a height of up to 0.4 mm, until the wear occurs and requires the replacement of the cup. Since re-profiling usually requires removal of more than 0.4 mm of rail material, several passes are required with a grinding machine. The use of a grinding machine also leads to sparking.
Es ist ferner bekannt, zum Nachprofilieren von Schienen profilierte Fräser in Form von Walzenfräsern einzusetzen, die mit Wendeschneidplatten bestückt sind. Mit dem Walzenfräser wird die Schiene im Abwälzverfahren gefräst. Bei einem Walzenfräser handelt es sich um einen relativ grossen, für den jeweiligen Schienentyp spezial angefertigten Fräser, der wegen der Stabilität ein schweres Trägerfahrzeug mit einem Gewicht von 50 Tonnen voraussetzt. Mit einem Walzenfräser können üblicherweise nur raue Schienenoberflächen erzielt, so dass im Nachhinein ein Schleifband eingesetzt werden muss, um eine glatte Oberfläche zu erreichen. Ferner führt die dem Walzenfräser eigene Vibration häufig zu Microwellen in der Schienenoberfläche.It is also known to use for profiling rails profiled cutter in the form of milling cutters, which are equipped with indexable inserts. With the roller cutter, the rail is milled in the rolling process. A milling cutter is a relatively large, specially designed for the respective rail type cutter, which requires the stability of a heavy carrier vehicle with a weight of 50 tons. With a roll mill usually only rough rail surfaces can be achieved, so that in retrospect, an abrasive belt must be used to achieve a smooth surface. Furthermore, the vibration inherent in the mill cutter often results in microwaves in the rail surface.
Aus der Patentanmeldung
Es ist Aufgabe der Erfindung, eine Vorrichtung und ein Verfahren zum Nachprofilieren einer Schiene bereitzustellen, mit denen die genannten Nachteile vermieden werden können.It is the object of the invention to provide a device and a method for reprofiling a rail to provide, with which the mentioned disadvantages can be avoided.
Die Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und ein Verfahren mit den Merkmalen des Anspruchs 15 gelöst.The object is achieved by a device having the features of
Die erfindungsgemässe Vorrichtung kennzeichnet sich dadurch aus, dass mehrere Fräser zur Erzeugung von in Längsrichtung einer Schiene verlaufenden Frässpuren vorgesehen sind, wobei jedem Fräser ein Profilbereich der Schiene zugeordnet ist und wobei eine Antriebseinheit für jeden Fräser vorgesehen ist. Je nach Breite der Schiene kann die Anzahl der Fräser verschieden sein. Vorzugsweise sind insgesamt acht bis zwölf Fräser vorgesehen. Dadurch, dass die erfindungsgemässe Vorrichtung mehrere Fräser umfasst, kann sie vorzugsweise zum Nachprofilieren von Schienen mit unterschiedlichen Profilgeometrien eingesetzt werden. Die Anpassung an eine andere Profilgeometrie kann insbesondere durch unterschiedliche Positionierung der Fräser erfolgen. Beispielsweise kann die Anpassung an eine andere Profilgeometrie dadurch erfolgen, dass einzelne Fräser höhenmässig verstellt werden oder nicht in Betrieb genommen werden. Ferner entsteht wegen des Einsatzes von Fräsern kein Funkenwurf und die Lärmbelastung ist gering.The device according to the invention is characterized in that a plurality of milling cutters are provided for generating milling tracks extending in the longitudinal direction of a rail, wherein each milling cutter is assigned a profile region of the rail and a drive unit is provided for each milling cutter. Depending on the width of the rail, the number of cutters may be different. Preferably, a total of eight to twelve cutters are provided. Because the device according to the invention comprises a plurality of cutters, it can preferably be used for re-profiling rails with different profile geometries. The adaptation to another profile geometry can be done in particular by different positioning of the cutter. For example, adaptation to another profile geometry can be achieved by adjusting individual cutters in height or not putting them into operation. Furthermore, due to the use of milling cutters, no sparking occurs and the noise load is low.
Gemäss Ausgestaltung der Erfindung sind die Fräser derart angeordnet, dass sich die im Betrieb von ihnen gebildeten Frässpuren überschneiden. Hierzu sind die Fräser, die benachbarten Profilbereichen zugeordnet sind, vorzugsweise versetzt zueinander angeordnet. Auf diese Weise können Fasen zwischen benachbarten Frässpuren im Wesentlichen vermieden bzw. gering gehalten werden und es kann eine glattere Schienenoberfläche erzielt werden, wobei dies vorteilhafterweise auch bei kurvenförmigen Schienenabschnitten der Fall ist.According to the embodiment of the invention, the cutters are arranged in such a way that the milling tracks formed by them overlap. For this purpose, the cutters which are assigned to adjacent profile areas are preferably arranged offset from one another. In this way, chamfers between adjacent milling tracks can be substantially avoided or kept low and it can be achieved a smoother rail surface, which is advantageously also the case with curved rail sections of the case.
Das erfindungsgemässe Verfahren zum Nachprofilieren einer Schiene kennzeichnet sich dadurch aus, dass mittels einer erfindungsgemässen Vorrichtung durch Fräsen mehrere in Längsrichtung der Schiene verlaufende Frässpuren erzeugt werde, die sich überschneiden. Die Breite der erzeugten Frässpuren nimmt vorzugsweise gegen die Fahrkante der Schiene hin ab.The inventive method for reprofiling a rail is characterized in that by means of an inventive device by Milling several running in the longitudinal direction of the rail milling tracks are generated, which overlap. The width of the generated milling tracks preferably decreases towards the running edge of the rail.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und den anhand der Zeichnungen nachfolgend dargestellten Ausführungsbeispielen. Es zeigen:
-
eine Darstellung eines Querschnitts einer Eisenbahnschiene,Figur 1 -
eine Darstellung eines Querschnitts einer Strassenbahnschiene,Figur 2 -
eine schematische Darstellung eines konvexen Querschnittteils eines Schienenkopfs, der mit Frässpuren versehen ist undFigur 3 -
Figur 4 eine schematische Darstellung einer Vorderansicht einer erfindungsgemässen Vorrichtung mit Fräsern und diesen zugeordneten Antriebseinheiten.
-
FIG. 1 a representation of a cross section of a railway track, -
FIG. 2 a representation of a cross section of a tramway rail, -
FIG. 3 a schematic representation of a convex cross-sectional part of a rail head, which is provided with milling tracks and -
FIG. 4 a schematic representation of a front view of an inventive device with milling cutters and associated drive units.
In den Figuren bezeichnen gleiche Bezugszeichen strukturell bzw. funktionell gleichwirkende Komponenten. Die in den Figuren angegebenen Massangaben sind beispielhafter Natur.In the figures, like reference numerals designate structurally or functionally equivalent components. The measures given in the figures are exemplary in nature.
Bevorzugt nimmt die Breite der Frässpuren 15 von der Fräskante 13 bzw. von deren äusserem Ende bis zur Mitte des Frässpiegels 12 hin zu. Auf diese Weise kann ein genaueres Nachprofilieren und eine glatte Oberfläche des konvexen Querschnittsbereichs 5, 11 erzielt werden. Die gegebenenfalls vorhandenen, nicht näher gekennzeichneten Kanten zwischen den einzelnen Frässpuren 15 verringern sich bzw. verschwinden durch den Gebrauch der Schiene. Vorzugsweise umfasst die erfindungsgemässe Vorrichtung acht bis zwölf Fräser, die entsprechende, in Längsrichtung der Schiene verlaufende Frässpuren 15 erzeugen.The width of the
Die Fräser 17 sind vorzugsweise derart angeordnet, dass sich die im Betrieb von ihnen gebildeten Frässpuren 15 möglichst überschneiden, so dass eine Fase zwischen den Frässpuren vermieden bzw. gering gehalten werden kann. Hierzu sind die Fräser 17 für benachbarte Profilbereiche bevorzugterweise versetzt zueinander angeordnet. Das heisst, in Draufsicht auf die Vorrichtung 16 überschneiden sich die Fräser 17 (wie in
Die Fräser 17 sind derart angeordnet, dass zumindest einige der Fräser 17 im Betrieb stirnseitig mit der Schiene bzw. mit deren konvexen Querschnittsbereich 5, 11 in Kontakt treten. Hierzu ist ein im Betrieb stirnseitig mit der Schiene in Kontakt tretender Fräser 17 bevorzugt in einem solchen Winkel angeordnet, dass sich seine Achse in einem im Wesentlichen rechten Winkel mit einer Tangente schneidet, die den dem Fräser 17 zugeordneten Profilbereich der Schiene in dessen Mittellinie berührt. Eine stirnseitige Anordnung sämtlicher Fräser 17 ist vorzugsweise für das Nachprofilieren einer in
Insbesondere zum Nachprofilieren einer Rillenschienenbahn, wie sie beispielhaft in
Die Antriebseinheiten 18, von denen jeweils eine einem Fräser 17, 17' zugeordnet ist, sind vorzugsweise als Hydraulikmotoren ausgeführt, die jeweils eine nicht dargestellte Pumpe und eine nicht dargestellte Hydraulikleitung umfassen. Die Pumpe weist beispielsweise eine Leistung von 7 kW auf. Selbstverständlich können die Antriebseinheiten 18 auch als Elektromotoren gleicher Leistung ausgeführt sein. Die Fräser 17, 17' werden vorzugsweise derart durch die Antriebseinheiten 18 angetrieben, dass sie mit gleicher Drehzahl rotieren. Zum Betreiben bzw. zur Ölversorgung der Antriebseinheiten 18 ist vorzugsweise ein nicht dargestellter Verbrennungsmotor in Form eines Dieselmotors vorgesehen, dem eine nicht dargestellte Steuereinheit, insbesondere in Form eines Verteilerblocks, zugeordnet ist, wobei zum Erreichen einer gleichen Drehzahl für sämtliche Fräser 17, 17' die nicht dargestellte Steuereinheit jeder Antriebseinheit 18 die gleiche Ölmenge zuordnet. Ferner kann jedem Fräser 17, 17' eine Kühlung, insbesondere eine Kühlleitung, zum Kühlen zugeordnet sein.The
Die Fräser 17, 17' sind vorzugsweise jeweils an ihren der Schiene zugewandten Enden mit Wendeschneidplatten versehen, die eingeschraubt oder angeklemmt sind. Die Wendeschneidplatten besitzen mehrere Schneidkanten. Verschleisst eine Schneidkante, so wird die Wendeschneidplatte einfach gedreht bzw. gewendet und kann weiterhin eingesetzt werden.The
Die erfindungsgemässe Vorrichtung 16 ist vorzugsweise mobil ausgestaltet, insbesondere in der Art, dass sie zum Nachprofilieren, vorzugsweise mittels eines Fahrzeugs, auf die Schiene bzw. auf das Gleis und dann über die Schiene bzw. das Gleis bewegt werden kann. Mittels der erfindungsgemässen Vorrichtung kann vorteilhafterweise das Profil der Schiene in einem Durchgang nachprofiliert werden, d.h. die erfindungsgemässe Vorrichtung braucht, beispielsweise mittels eines Fahrzeugs, nur einmal über die Schiene bewegt zu werden. Geht man bei einer Strassenbahnschiene von einer Standzeit von 30 Jahren aus, so ist es für das Erreichen dieser Standzeit ausreichend mit der erfindungsgemässen Vorrichtung halbjährlich 0,4 mm beim Nachprofilieren abzufräsen, was 0,8 mm pro Jahr entspricht. Durch die erfindungsgemässe Vorrichtung wird vorteilhafterweise kein Funkenwurf erzeugt und es entsteht weniger Lärm als beim Einsatz einer Schleifmaschine. Die beim Fräsen entstehenden Späne können nach dem Fräsvorgang oder gleichzeitige zum Fräsvorgang durch eine entsprechende Saugvorrichtung ab- bzw. weggesaugt werden.The
Claims (16)
- Apparatus for reshaping a rail, with several chamfers (17, 17') for forming chamfer tracks (15) running in a longitudinal direction of the rail, wherein each chamfer (17, 17') is to be assigned a profile region of the rail (1, 6) and wherein a drive unit (18) is provided for each chamfer (17, 17'), characterized in that the drive units (18) are formed as hydraulic motors.
- Apparatus according to claim 1, characterized in that the chamfers (17, 17') are arranged such that the chamfer tracks (15), that are formed by them in operation, overlap.
- Apparatus according to claim 2, characterized in that the chamfers (17, 17') for adjacent profile regions are arranged offset to each other.
- Apparatus according to one of the preceding claims, characterized in that the chamfers (17, 17') are formed such that the width of the chamfer tracks (15) formed by them decreases at least towards one end of a running edge (13) of the rail (1, 6).
- Apparatus according to one of the preceding claims, characterized in that at least some of the chamfers (17) are arranged such that they contact with the rail (1, 6) with the front face in operation.
- Apparatus according to claim 5, characterized in that a chamfer (17), that contacts with the rail (1, 6) with the front face in operation, is arranged at such an angle that its axis intersects in a substantially right angle with a tangent, that touches the profile region that is assigned to the chamfer (17) at its centre line.
- Apparatus according to one of the preceding claims, characterized in that at least one, preferably two, chamfer (17'), whose assigned profile region is provided at a running edge (13) of the rail (6), is arranged such that it contacts with the rail (6) with the shell side in operation.
- Apparatus according to claim 7, characterized in that a chamfer (17'), that contacts with the rail (6) with the shell side in operation, is arranged in such an angle that its axis runs substantially parallel to a tangent, that touches the profile region that is assigned to the chamfer (17') at its centre line.
- Apparatus according to one of the preceding claims, characterized by a combustion engine for driving the drive units (18).
- Apparatus according to claim 9, characterized in that the combustion engine is assigned a control unit.
- Apparatus according to one of the preceding claims, characterized in that each chamfer (17, 17') is assigned a cooling.
- Apparatus according to one of the preceding claims, characterized in that preferably eight to twelve chamfers (17, 17') are provided.
- Apparatus according to one of the preceding claims, characterized in that the chamfers (17, 17') each comprise indexable inserts.
- Apparatus according to one of the preceding claims, characterized in that the apparatus (16) is construed such that it is mobile, in particular movable on a rail.
- Method for reshaping a rail, characterized in that by means of an apparatus (16) according to one of the claims 1 to 14 through milling several chamfer tracks (15) are formed that run in a longitudinal direction of the rail, that overlap each other, wherein each chamfer (17, 17') of the apparatus (16) is driven by the drive unit (18) that is assigned to it and formed as a hydraulic motor.
- Method according to claim 15, characterized in that the width of the formed chamfer tracks (15) decreases towards the running edge (13) of the rail (1, 6).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502007002996T DE502007002996D1 (en) | 2007-01-29 | 2007-01-29 | Device and method for reprofiling a rail |
EP07001837A EP1950348B1 (en) | 2007-01-29 | 2007-01-29 | Device and method for reshaping rails |
AT07001837T ATE459756T1 (en) | 2007-01-29 | 2007-01-29 | DEVICE AND METHOD FOR REPROFILING A RAIL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07001837A EP1950348B1 (en) | 2007-01-29 | 2007-01-29 | Device and method for reshaping rails |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1950348A1 EP1950348A1 (en) | 2008-07-30 |
EP1950348B1 true EP1950348B1 (en) | 2010-03-03 |
Family
ID=38145355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07001837A Not-in-force EP1950348B1 (en) | 2007-01-29 | 2007-01-29 | Device and method for reshaping rails |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1950348B1 (en) |
AT (1) | ATE459756T1 (en) |
DE (1) | DE502007002996D1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007060215A1 (en) * | 2007-12-12 | 2009-06-18 | Laurent Goer | Device for processing a running edge |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL248863A (en) | 1958-07-30 | |||
DE3028071A1 (en) * | 1980-07-24 | 1982-03-11 | Werkzeugmaschinenfabrik Adolf Waldrich Coburg Gmbh & Co, 8630 Coburg | METHOD FOR REPROFILING RAILROAD RAIL PROFILES |
EP0088197B1 (en) * | 1982-03-10 | 1986-11-12 | MATIX INDUSTRIES (Société Anonyme) | Apparatus for reshaping tracks by continuous milling |
WO1995020071A1 (en) * | 1994-01-19 | 1995-07-27 | Linsinger Maschinenbau Gesellschaft Mbh | Process for milling a strip-shaped workpiece surface |
-
2007
- 2007-01-29 AT AT07001837T patent/ATE459756T1/en active
- 2007-01-29 EP EP07001837A patent/EP1950348B1/en not_active Not-in-force
- 2007-01-29 DE DE502007002996T patent/DE502007002996D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
ATE459756T1 (en) | 2010-03-15 |
DE502007002996D1 (en) | 2010-04-15 |
EP1950348A1 (en) | 2008-07-30 |
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