EP1301662B1 - Method for grinding a rail and device for carrying out said method - Google Patents
Method for grinding a rail and device for carrying out said method Download PDFInfo
- Publication number
- EP1301662B1 EP1301662B1 EP01984253A EP01984253A EP1301662B1 EP 1301662 B1 EP1301662 B1 EP 1301662B1 EP 01984253 A EP01984253 A EP 01984253A EP 01984253 A EP01984253 A EP 01984253A EP 1301662 B1 EP1301662 B1 EP 1301662B1
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- EP
- European Patent Office
- Prior art keywords
- rail
- grinding wheel
- grinding
- several
- running surface
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
Definitions
- the invention aims to avoid these disadvantages and difficulties and has as its object to provide a method of the type described above, which on the one hand allows sufficient for rails material removal in a single passage for the entire section to be ground and on the other hand prevents overheating of the rail material. Furthermore, the grinding wheel should have a sufficient life, u.zw. despite high performance, i. despite the large rail length cut per unit time.
- Fig. 1 and 2 show a device according to the invention, which is arranged stationary and at which the rail to be processed 1 is moved past.
- Fig. 3 represents a device according to the invention, which is installed in a mobile device, such as a locomotive, so that with this device already laid rails can be edited.
- the device according to the invention is duplicated, so that both the left and the right rail can be finished with a crossing finished.
- the mutually equal parts and facilities of the stationary device and the mobile device are provided with the same reference numerals.
- the axis 21 of the grinding wheel 12 can expediently be arranged so as to be adjustable on the device.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Feeding Of Workpieces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Optical Head (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Fräsen und Schleifen mindestens des Fahrspiegels einer Schiene, insbesondere einer Eisenbahnschiene.The invention relates to a method for milling and grinding at least the driving mirror of a rail, in particular a railroad track.
Zum Schleifen des den Fahrspiegel aufweisenden konvexen Querprofiles einer Schiene, wie einer Eisenbahnschiene, ist es bekannt, Topfscheiben einzusetzen. Hierbei gelingt es jedoch nur, bei einem Durchgang eine schmale Spur zu schleifen, so daß eine Vielzahl von Überfahrten der Schleifscheibe an der Schiene durchgeführt werden müssen. Diese Vielzahl der Überfahrten bedingt Ungenauigkeiten, da die bei jeder Überfahrt hergestellte Spur nicht genau zur vorher geschliffenen Spur ausgerichtet werden kann. Zudem ergibt sich eine hohe Lärmbelästigung und bei Trockenheit eine Brandgefahr durch Funkenflug.For grinding the driving mirror having convex cross profile of a rail, such as a railway rail, it is known to use cup wheels. In this case, however, it is only possible to grind a narrow track in one pass, so that a large number of passes of the grinding wheel on the rail must be performed. This variety of crossings causes inaccuracies, since the track produced at each crossing can not be aligned exactly with the previously ground track. In addition, there is a high level of noise and drought a risk of fire by flying sparks.
Es ist weiters bekannt, das den Fahrspiegel aufweisende konvexe Querprofil des Schienenkopfes mittels Stirnschleifscheiben zu bearbeiten, wobei die Schleifscheibe das gewünschte Profil des Schienenkopfes aufweist und so ausgerichtet ist, daß ihre Achse senkrecht steht zur Längssymmetrieebene der Schiene. Hierbei tritt jedoch der Nachteil auf, daß ein Schleifabtrag nahe den Seitenbereichen des Schienenkopfes, d.h. nahe der Fahrkante, nur beschränkt möglich ist, da hier die Schleifscheibe nur einen ungünstigen Eingriffswinkel der Schleifkörner mit dem Nachteil des Überhitzens des Schienen werkstoffes ermöglicht. Will man diesen Nachteil ausschalten, ist man gezwungen, das Abtragsvolumen pro Zeiteinheit zu reduzieren, was jedoch wiederum eine Mehrzahl von Überfahrten bzw. Schleifvorgängen für ein- und dieselbe zu schleifende Fläche an der Schiene erfordert.It is also known to machine the traveling mirror having convex transverse profile of the rail head by Stirnschleifscheiben, wherein the grinding wheel has the desired profile of the rail head and is oriented so that its axis is perpendicular to the longitudinal plane of symmetry of the rail. However, there is a disadvantage that a grinding abrasion near the side portions of the rail head, i. near the driving edge, only limited possible, since here the grinding wheel only allows an unfavorable pressure angle of the abrasive grains with the disadvantage of overheating of the rail material. If you want to eliminate this disadvantage, you are forced to reduce the removal volume per unit of time, which in turn requires a plurality of crossings or grinding operations for one and the same surface to be ground on the rail.
Gemäß der
Gemäß der
Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, ein Verfahren der eingangs beschriebenen Art zu schaffen, welches einerseits einen für Schienen ausreichenden Materialabtrag in einem Durchgang für den gesamten zu schleifenden Querschnitt ermöglicht und andererseits eine Überhitzung des Schienenmaterials verhindert. Weiters soll die Schleifscheibe eine ausreichende Standzeit aufweisen, u.zw. trotz hoher Leistungsfähigkeit, d.h. trotz großer pro Zeiteinheit geschliffener Schienenlänge.The invention aims to avoid these disadvantages and difficulties and has as its object to provide a method of the type described above, which on the one hand allows sufficient for rails material removal in a single passage for the entire section to be ground and on the other hand prevents overheating of the rail material. Furthermore, the grinding wheel should have a sufficient life, u.zw. despite high performance, i. despite the large rail length cut per unit time.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of
Bevorzugte Ausführungsformen sind in den Unteransprüchen 2 bis 21 näher gekennzeichnet.Preferred embodiments are characterized in detail in the
Eine Vorrichtung zur Durchführung des Verfahrens mit
- einer Fräseinheit mit einem Umfangsfräser und
- einer Schleifeinheit umfassend:
- eine Schleifscheibe,
- eine Einrichtung zum Erzeugen einer Relativbewegung zwischen einer Schiene und der Schleifscheibe in Längsrichtung der Schiene,
- einen Schteifscheibenantrieb und
- eine Lagerung der Achse der Schleifscheibe in einer Richtung abweichend von einer senkrecht zur Längsrichtung der Schiene gelegten Ebene und
- eine an den Fahrspiegel der Schiene anpreßbare Führung,
- eine unabhängig von der Führung einstellbare Schleiftiefenregelung und
- eine Einrichtung zum Nachstellen der Schleifscheibe in Abhängigkeit der Abnützung in Richtung zur Schiene vorgesehen ist, welche Einrichtung vorzugsweise eine Meßeinrichtung zur Ermittlung des Schleifscheibendurchmessers aufweist.
- a milling unit with a peripheral cutter and
- a grinding unit comprising:
- a grinding wheel,
- a device for generating a relative movement between a rail and the grinding wheel in the longitudinal direction of the rail,
- a Schteifscheibenantrieb and
- a bearing of the axis of the grinding wheel in a direction deviating from a plane perpendicular to the longitudinal direction of the rail plane and
- a guide which can be pressed against the travel mirror of the rail,
- an independent of the leadership adjustable grinding depth control and
- a device for adjusting the grinding wheel is provided depending on the wear in the direction of the rail, which device preferably has a measuring device for determining the grinding wheel diameter.
Bevorzugte Ausführungsformen der Vorrichtung sind in den Unteransprüchen 23 bis 33 enthalten.Preferred embodiments of the device are contained in the
Die Erfindung ist nachfolgend anhand der Zeichnung an zwei Ausführungsbeispielen näher erläutert, wobei
In
Bei alten Schienen mit verschlissenem Schienenkopfprofil soll das Schienenkopfprofil reprofiliert werden, wofür das erfindungsgemäße Fräsen und Schleifen vorgesehen sind. Bei neuen Schienen ist es zweckmäßig, die Walzhaut zu entfernen, um bessere Laufeigenschaften, eine längere Lebensdauer und eine Lärmminderung zu erzielen; hierfür genügt der erfindungsgemäße Schleifvorgang ohne vorhergehendes Fräsen.In old rails with worn rail head profile, the rail head profile is to be reprofiled, for which the milling and grinding according to the invention are provided. For new rails, it is appropriate to remove the mill scale for better running, longer life and noise reduction; For this purpose, the grinding process according to the invention without previous milling is sufficient.
Wie aus
Die
Mit 7 ist eine Fräseinheit bezeichnet, deren Fräser 8 als Umfangsfräser ausgebildet ist. Dieser Fräser 8 ist über einen Antriebsmotor 9 und ein Getriebe 10 antreibbar, wobei die Drehrichtung so gewählt ist, daß die Schiene 1 im Gleichlauffräsverfahren bearbeitet wird. Unmittelbar benachbart zur Fräseinheit 7 ist eine Schleifeinheit 11 vorgesehen, deren Schleifscheibe 12 mittels eines Antriebs 13 antreibbar ist, u.zw. vorzugsweise ebenfalls in der Drehrichtung wie der Fräser 8, so daß ein Gleichlaufschleifen an der Schiene 1 durchgeführt wird. Die Schleifscheibe 12 ist mit einer Schleiftiefenregelung 14 ausgestattet, so daß die Schleifscheibe 12 kontinuierlich entsprechend ihrer Abnutzung an die Schiene 1 nachgestellt werden kann. Diese Schleiftiefenregelung 14 umfaßt eine Meßeinrichtung zum Messen des sich kontinuierlich verringernden Durchmessers des Umfanges der Schleifscheibe 12; sie kann auch auf Meßdaten von Messungen des Antriebsmomentes zurückgreifen.7 with a milling unit is designated, the
Sowohl die Frässpäne als auch die Schleifspäne bzw. der Schleifstaub werden unmittelbar nach ihrem Entstehen abgesaugt, u.zw. über Absaugeinrichtungen 15 und 16.Both the milling chips and the grinding chips or the grinding dust are sucked immediately after their emergence, u.zw. via
Unmittelbar vor der Fräseinheit 7 und unmittelbar nach der Schleifeinheit 11 sind jeweils Führungen 17 für die Schiene 1 vorgesehen, gegen die die Schiene 1 mittels Unterstützungsrollen 18 preßbar ist, wobei zumindest der Fahrspiegel 4 der Schiene 1, vorzugsweise der Scheitel des Schienenkopfes 3, preßbar ist. Weiters sind entlang der Vorrichtung beidseitig am Schienenkopf 3 angreifende Seitenführungsrollen 19 vorgesehen, wobei die an Seite der Fahrkante 6 der Schiene 1 anliegenden Seitenführungsrollen 19 in ihrer Lage fixiert sind. Die Schiene wird von den an der gegenüberliegenden Seite anliegenden Seitenführungsrollen 19 gegen die fixierten Seitenführungsrollen 19 gepreßt, wodurch die Schiene 1 eine exakte Lage gegenüber der Fräseinheit und Schleifeinheit einnimmt.Immediately before the
Zwischen der Fräseinheit 7 und der Schleifeinheit 11 ist eine weitere Führung 20 vorgesehen, die mit einer Dämpfung versehen ist, um vom Fräser verursachte Schwingungen an der Schiene 1 zu eliminieren.Between the
Wie insbesondere aus
Die Schleifscheibe 12 ist im Neuzustand bereits vorprofiliert, d.h. sie weist etwa das Gegenprofil zur Schiene 1 auf. Um dieses Gegenprofil exakt herzustellen, ist vorteilhaft eine Abzieheinrichtung 23 mit einem Abziehstein 24, vorgesehen, der gegen den Umfang der Schleifscheibe 12 preßbar ist. Dieser Abziehstein weist genau das gewünschte herzustellende Profil auf und er schließt mit der Schleifscheibe ebenfalls den Winkel α ein. Dieser Abziehstein 24 wird vor Beginn des Schleifens der ersten Schiene 1 gegen die Schleifscheibe 12 gepreßt, bis diese dessen Profil angenommen hat.The grinding
Während des Schleifens der Schiene 1 kann der Abziehstein 24 von der Schleifscheibe 12 abgehoben werden, denn die Schleifscheibe profiliert sich selbst am Vorprofil; d.h. an der gefrästen Schienenkopffläche bzw. an der noch mit der Walzhaut versehenen Schienenkopfoberfläche. Der Abziehstein kann gegebenenfalls zur zeitweiligen Schärfung an die Schleifscheibe 12 während des Bearbeitens eines Schienenkopfes 3 an die Schleifscheibe 12 angestellt werden.During the grinding of the
Zur Einstellung eines genauen Gegenprofiles der Schleifscheibe 12 kann auch die Schiene 1, sofern sie hinreichend genau gefräst ist oder noch die Walzhaut aufweist, herangezogen werden.To set an exact Gegenprofiles the grinding
Wenn, wie beim dargestellten Ausführungsbeispiel, eine gefräste Schienenkopfoberfläche geschliffen wird, so hat die profilierte Schleifscheibe 12 vorrangig nur noch die Aufgabe, die vom Fräser 8 erzeugten Wellen zu glätten und ein Längsschleifbild zu erzeugen.If, as in the illustrated embodiment, a milled rail head surface is ground, the profiled
Durch das erfindungsgemäße Schrägstellen der Schleifscheibe 12 ergeben sich besonders gute Eingriffsbedingungen und ein hoher Glätteffekt. Der Eingriff der schräg gestellten Schleifscheibe 12 ist in
Es kann von Vorteil sein, wenn die Achse 21 der Schleifscheibe 12 gegenüber der Längs-Symmetriemittelebene 26 der Schiene ebenfalls geneigt ist, u.zw. um einen Winkel β, dessen Größe zwischen 1 und 20° liegen kann.It may be advantageous if the
Sollen mit der erfindungsgemäßen Vorrichtung unterschiedliche Schienenprofile bearbeitet werden, so kann zweckmäßig die Achse 21 der Schleifscheibe 12 an der Vorrichtung verstellbar angeordnet sein.If different rail profiles are to be machined with the device according to the invention, the
Gemäß der in
Claims (33)
- A method of milling and grinding at least the running surface (4) of a rail (1), especially of a railway rail, by producing a relative motion between a grinding wheel (12) having a profile that mates the profile of the running surface and being driven by means of a motor (9) and a rail in the longitudinal direction thereof, with the axis of the grinding wheel and a plane perpendicular to the longitudinal direction of the rail including an angle α deviating from 0° and the grinding wheel (12) being moved against the rail (1) up to the point of engagement, wherein, after peripheral milling of the running surface, said movement - the grinding wheel (12) against the rail (1) - is restricted by means of a guide (17) which can be pressed against the milled running surface (4) of the rail (1) independently of regulating the depth of grinding, and wherein the grinding wheel (12) is readjusted, preferably automatically, in the direction toward the rail (1) by regulating the depth of grinding depending on the wear of the grinding wheel.
- A method according to claim 1, characterized in that the grinding wheel (12) is movable in the direction against the guiding surface (6) of the rail (1), which movement is restricted by means of a guide (19) directed against the guiding surface (6) of the rail (1).
- A method according to claim 1 or 2, characterized in that the axis (21) of the grinding wheel (12) and the plane perpendicular to the longitudinal direction of the rail (1) include an angle α of between 1 and 20°C.
- A method according to claim 3, characterized in that the angle α ranges between 5 and 12°, ideally amounting to about 8°.
- A method according to one or several of claims 1 to 4, characterized in that the axis (21) of the grinding wheel (12), with a cutting line of a plane of symmetry lying in the longitudinal direction of the rail (1), and the plane directed so as to be perpendicular to the longitudinal direction of the rail (1) include an angle β of about 90°.
- A method according to one or several of claims 1 to 4, characterized in that the angle β is smaller than 90° and greater than 70°, with said angle β being maintained on the side of the guiding surface (6) of the rail (1).
- A method according to one or several of claims 1 to 6, characterized in that a roller skin present of the running surface (4) of the rail (1) is removed by means of the grinding operation.
- A method according to one or several of claims 1 to 7, characterized in that a milled surface, which is present of the running surface (4) prior to grinding, is removed at least partially by means of the grinding operation.
- A method according to one or several of claims 1 to 8, characterized in that the entire convex cross-profile (5) of the rail head, which cross-profile exhibits the running surface (4), is ground in addition to the running surface (4).
- A method according to one or several of claims 1 to 9, characterized in that the depth of grinding is regulated by making use of measured values gained from measuring the diameter of the grinding wheel surface or by making use of measuring data gained from measuring the driving torque of the grinding wheel (12).
- A method according to one or several of claims 1 to 10, characterized in that the grinding wheel (12) is profiled by means of a grinding stone (24), wherein the grinding stone (24) exhibits the profile of at least the running surface (4) of the rail (1) and its longitudinal direction, together with the grinding wheel (12), includes the same angle α and β as does the rail (1).
- A method according to claim 11, characterized in that before grinding of the running surface (4) of the rail (1) is started and, subsequently, during grinding, profiling is carried out only optionally and at larger time intervals.
- A method according to one or several of claims 1 to 12, characterized in that the relative longitudinal motion between the rail (1) and the grinding wheel (12) is generated by longitudinally displacing the rail (1) relative to the grinding wheel (12).
- A method according to claim 13, characterized in that, immediately before the engagement of the grinding wheel (12), the rail (1) is pressed against a guide directed against the running surface (4) of the rail (1).
- A method according to claim 14, characterized in that the guide (17) is damped in order to avoid vibrations.
- A method according to one or several of claims 13 to 15, characterized in that, immediately before the engagement of the grinding wheel (12), the rail (1) is pressed against a lateral guide (19) directed against the guiding surface (6) of the rail (1).
- A method according to one or several of claims 13 to 16, characterized in that, immediately upon the engagement of the grinding wheel (12), the rail (1) is pressed against a further guide (17) directed toward the running surface (4) of the rail.
- A method according to one or several of claims 13 to 17, characterized in that, immediately upon the engagement of the grinding wheel (12), the rail (1) is pressed against a lateral guide (19) directed against the guiding surface (6) of the rail (1).
- A method according to one or several of claims 1 to 18, characterized in that, just upon their emergence, the grinding chips are sucked off.
- A method according to one or several of claims 1 to 19, characterized in that grinding is performed using the down-grinding method.
- A method according to one or several of claims 1 to 12, characterized in that the relative longitudinal motion between the rail (1) and the grinding wheel (12) is performed by longitudinally moving the grinding wheel (12) along a laid rail (1).
- A device for carrying out the method according to one or several of claims 1 to 21, comprising:• a milling unit (7) comprising a peripheral milling cutter (8) and• a grinding unit (11) comprising:• a grinding wheel (12),• a means for generating a relative motion between a rail (1) and the grinding wheel (12) in the longitudinal direction of the rail,• a grinding wheel driving means (9), and• a positioning of the axis (21) of the grinding wheel (12) in a direction deviating from a plane perpendicular to the longitudinal direction of the rail (1), and• a guide (17) which can be pressed against the running surface (4) of the rail (1),• a grinding depth regulating system (14) which is adjustable independently of the guide (17), and• a means for readjusting the grinding wheel (12) in the direction toward the rail (1) depending on the wear, which means preferably has a measuring system for evaluating the diameter of the grinding wheel.
- A device according to claim 22, characterized in that the deviation α from the plane perpendicular to the longitudinal direction of the rail (1) amounts to between 1 and 20°.
- A device according to claim 23, characterized in that the deviation α amounts to from 5 to 12°, preferably to about 8°.
- A device according to one or several of claims 22 to 24, characterized in that the positioning of the axis (21) of the grinding wheel (12) is displaceable from a plane perpendicular to the longitudinal direction of the rail (1) in order to adjust different deviations.
- A device according to one or several of claims 22 to 25, characterized in that the positioning of the axis (21) of the grinding wheel (12) is configured such that the axis (21) of the grinding wheel (12), with a cutting line of a plane of symmetry lying in the longitudinal direction of the rail (1), and the plane directed so as to be perpendicular to the longitudinal direction of the rail (1) include an angle β of about 90°.
- A device according to one or several of claims 22 to 26, characterized by a grinding stone (24) which has the profile of at least the running surface (4) of the rail (1) and the longitudinal direction of which includes the same angle α and β against the grinding wheel (12) as does the rail (1).
- A device according to one or several of claims 22 to 27, characterized by a means for moving a rail (1) past the grinding wheel (12) in the direction of the longitudinal axis of the rail.
- A device according to claim 28, characterized in that the means comprises a guide (17) directed against the running surface (4) of the rail (1) and a pressing facility (18) for pressing the rail (1) against said guide (17).
- A device according to claim 29, characterized in that the guide (17) is vibration-reduced.
- A device according to claim 29 or 30, characterized in that a lateral guide (19) for the rail (1), which lateral guide is directed against the guiding surface (6) of the rail (1), as well as a pressing facility for pressing the rail against said lateral guide (19) are provided.
- A device according to one or several of claims 22 to 27, characterized in that the grinding wheel (12) is provided on a travelling means (27) displaceable along a laid rail (1).
- A device according to claim 32, characterized in that the travelling means (27) is provided with guides (17,19) restricting the engagement of the grinding wheel (12) approximately vertically and approximately horizontally and enganging the rail (1) at the running surface (4) and at the guiding surface (6).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT12422000 | 2000-07-17 | ||
AT0124200A AT411912B (en) | 2000-07-17 | 2000-07-17 | METHOD FOR GRINDING A RAIL AND DEVICE FOR IMPLEMENTING THE METHOD |
PCT/AT2001/000233 WO2002006586A1 (en) | 2000-07-17 | 2001-07-12 | Method for grinding a rail and device for carrying out said method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1301662A1 EP1301662A1 (en) | 2003-04-16 |
EP1301662B1 true EP1301662B1 (en) | 2008-02-13 |
Family
ID=3687738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01984253A Expired - Lifetime EP1301662B1 (en) | 2000-07-17 | 2001-07-12 | Method for grinding a rail and device for carrying out said method |
Country Status (13)
Country | Link |
---|---|
US (1) | US6921319B2 (en) |
EP (1) | EP1301662B1 (en) |
JP (1) | JP2004503699A (en) |
KR (1) | KR100851611B1 (en) |
CN (2) | CN1296562C (en) |
AT (2) | AT411912B (en) |
AU (1) | AU2002222947A1 (en) |
DE (1) | DE50113600D1 (en) |
ES (1) | ES2301568T3 (en) |
HU (1) | HU229327B1 (en) |
PL (1) | PL208718B1 (en) |
RU (1) | RU2272858C2 (en) |
WO (1) | WO2002006586A1 (en) |
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CN113136750B (en) * | 2021-04-26 | 2022-10-04 | 株洲时代电子技术有限公司 | Steel rail cambered surface polishing method |
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AT388764B (en) * | 1987-05-12 | 1989-08-25 | Plasser Bahnbaumasch Franz | BAND GRINDING UNIT FOR GRINDING IRREGULARITIES ON THE RAIL TOP OF ONE OR BOTH RAILS OF A LAYED TRACK |
DE3772057D1 (en) * | 1987-11-07 | 1991-09-12 | Scheuchzer Fils Auguste | GRINDING MACHINE FOR REPROFILING RAIL HEADS. |
ATE72851T1 (en) * | 1988-05-30 | 1992-03-15 | Scheuchzer Fils Auguste | RAIL GRINDING MACHINE. |
IT1239247B (en) * | 1990-05-08 | 1993-09-28 | Rotafer | TANGENTIAL GRINDING MACHINE, PARTICULARLY FOR RAILWAY RAILS |
CH685129A5 (en) * | 1991-03-01 | 1995-03-31 | Speno International | Device for reprofiling the rails of a railway. |
CH689643A5 (en) * | 1994-02-18 | 1999-07-30 | Speno International | An installation for reprofiling the rails of a railway. |
DE4437585C1 (en) * | 1994-10-20 | 1996-03-21 | Pomikacsek Josef | Method and device for machining the running surface of rails by peripheral grinding |
CN2250374Y (en) * | 1995-10-12 | 1997-03-26 | 沈阳铁路局锦州工程处电器设备厂 | Two-purpose rail polishing machine |
IT1291080B1 (en) * | 1996-11-12 | 1998-12-14 | Mecno Srl | TANGENTIAL GRINDING MACHINE |
-
2000
- 2000-07-17 AT AT0124200A patent/AT411912B/en not_active IP Right Cessation
-
2001
- 2001-07-12 JP JP2002512469A patent/JP2004503699A/en not_active Withdrawn
- 2001-07-12 EP EP01984253A patent/EP1301662B1/en not_active Expired - Lifetime
- 2001-07-12 WO PCT/AT2001/000233 patent/WO2002006586A1/en active IP Right Grant
- 2001-07-12 DE DE50113600T patent/DE50113600D1/en not_active Expired - Lifetime
- 2001-07-12 CN CNB018141862A patent/CN1296562C/en not_active Expired - Lifetime
- 2001-07-12 ES ES01984253T patent/ES2301568T3/en not_active Expired - Lifetime
- 2001-07-12 HU HU0301227A patent/HU229327B1/en unknown
- 2001-07-12 AU AU2002222947A patent/AU2002222947A1/en not_active Abandoned
- 2001-07-12 KR KR1020037000772A patent/KR100851611B1/en active IP Right Grant
- 2001-07-12 AT AT01984253T patent/ATE386165T1/en active
- 2001-07-12 PL PL365650A patent/PL208718B1/en unknown
- 2001-07-12 RU RU2003104520/11A patent/RU2272858C2/en active
-
2002
- 2002-06-28 CN CNA2007100023677A patent/CN1992025A/en active Pending
-
2003
- 2003-01-17 US US10/346,057 patent/US6921319B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AT411912B (en) | 2004-07-26 |
US20030143928A1 (en) | 2003-07-31 |
US6921319B2 (en) | 2005-07-26 |
PL365650A1 (en) | 2005-01-10 |
EP1301662A1 (en) | 2003-04-16 |
KR20030024789A (en) | 2003-03-26 |
ES2301568T3 (en) | 2008-07-01 |
HUP0301227A2 (en) | 2003-08-28 |
CN1992025A (en) | 2007-07-04 |
WO2002006586A1 (en) | 2002-01-24 |
CN1296562C (en) | 2007-01-24 |
AU2002222947A1 (en) | 2002-01-30 |
CN1447869A (en) | 2003-10-08 |
ATA12422000A (en) | 2003-12-15 |
KR100851611B1 (en) | 2008-08-12 |
PL208718B1 (en) | 2011-06-30 |
HU229327B1 (en) | 2013-11-28 |
DE50113600D1 (en) | 2008-03-27 |
ATE386165T1 (en) | 2008-03-15 |
RU2272858C2 (en) | 2006-03-27 |
JP2004503699A (en) | 2004-02-05 |
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