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EP0371328A2 - Method of and device for grinding the upper surfaces and/or the guide surfaces of rails or like - Google Patents

Method of and device for grinding the upper surfaces and/or the guide surfaces of rails or like Download PDF

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Publication number
EP0371328A2
EP0371328A2 EP89121168A EP89121168A EP0371328A2 EP 0371328 A2 EP0371328 A2 EP 0371328A2 EP 89121168 A EP89121168 A EP 89121168A EP 89121168 A EP89121168 A EP 89121168A EP 0371328 A2 EP0371328 A2 EP 0371328A2
Authority
EP
European Patent Office
Prior art keywords
rail
grinding
deflection
running
roller
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.)
Withdrawn
Application number
EP89121168A
Other languages
German (de)
French (fr)
Other versions
EP0371328A3 (en
Inventor
Gerhard Arndt
Hans Dr. Guntermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goldschmidt ETB GmbH
Original Assignee
Elektro Thermit GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elektro Thermit GmbH filed Critical Elektro Thermit GmbH
Publication of EP0371328A2 publication Critical patent/EP0371328A2/en
Publication of EP0371328A3 publication Critical patent/EP0371328A3/en
Withdrawn legal-status Critical Current

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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
    • E01B31/175—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding using grinding belts

Definitions

  • the invention relates to a method for grinding the rail head surface consisting of the running surface, rounded corners and outer surfaces, the so-called running and guiding surfaces of rails or the like, in which the running and / or guiding surfaces can be moved by an endless, revolving surface and against the surfaces Grinding belt are ground, as well as on a device for performing this method.
  • Weld beads such as those produced in the case of aluminothermic connection welding, excess weld metal that occurs during electrical build-up welding on both new and repairable track rails, but also undulating or corrugated unevenness in the running or guide surfaces of the track rails, which affect the running properties of rail vehicles significantly impair, are eliminated by a grinding process or a grinding process.
  • a mobile rail grinding machine for carrying out such a grinding method, with which the tread according to the exemplary embodiment of FIG. 6 is processed by an endless, rotating grinding belt which is pressed against the running surface of the track rail.
  • the sanding belt is picked up on the one hand by a drive roller and on the other hand by another roller, which is arranged at a distance from the drive roller and serves to deflect, both of which can be rotated about a horizontal axis which runs transversely to the longitudinal axis of the track rail. This means that the sanding belt rotates in the direction of the track rail and thus in the direction of travel or opposite to the direction of travel of the machine.
  • the drive roller and the deflection roller are either completely cylindrical or, for better guidance of the sanding belt, slightly curved outwards or convex. The consequence of this is that such a grinding process only leaves a flat surface on the running surface of the rail, by means of which unevenness or welding beads are eliminated only in this area.
  • several such grinding units are therefore arranged one behind the other in a machine, each subsequent grinding unit being rotated by a few angular degrees in the longitudinal direction of the track rail relative to the previous grinding unit.
  • the tread consists of several planes, each inclined by a few degrees to each other, which come very close to the desired shape of the tread, but never reach it.
  • the tread will always have a polygonal cross-section. Furthermore, such a grinding method has the major disadvantage that the loosened grinding dust moves or flies in the longitudinal direction of the rail and can settle on the rail or its running surface.
  • This previously known device requires a considerable financial outlay and is nevertheless unsuitable for machining weld beads on track connections and short track sections, the properties of which are improved prior to installation by build-up welding.
  • the one has a considerably simpler and therefore also cheaper structure.
  • the head or running surface is processed by means of an endless, revolving grinding belt which is guided over a drive roller and a pressure roller, both of which can be rotated about an axis which runs horizontally and transversely to the rail.
  • the grinding belt runs in the longitudinal direction of the rail, so that here too there is always a polygonal head or running surface after the processing or the grinding process.
  • the pressure roller is designed as a profile roller, the free cross section of which corresponds to the running surface of the track head.
  • Such a profiled pressure roller leads to undesired stretching in the edge regions of the sanding belt, which leads to very rapid wear or rapid destruction of the sanding belt. For this reason, such a pressure roller is not used in practice.
  • the invention is therefore based on the object of demonstrating a method with which it is possible with little effort and without difficulty to grind the running and / or guide surfaces of rails and to rule out the formation of polygonal surfaces.
  • the running and / or guiding surfaces of the rail are ground by an abrasive belt that runs at least partially around the longitudinal axis of the rail and that wraps around the running and / or guiding surfaces under tension.
  • Such a grinding process ensures processing of curved surfaces of the rail; Polygonal surfaces, as is customary in the previously known methods, no longer arise.
  • the method can be carried out both for butt joints, for surfacing and for eliminating undulations and / or grooves in the form of grooves. Grooved rails can also be processed perfectly using this method.
  • FIG. 1 Of a device 1 for grinding the tread 2 of a track rail 3, only one guide 4 is shown in FIG. 1, which is carried in a manner known per se, not shown, from a frame which can be carried out, for example, by means of four castors by hand or by means of a special drive can be moved on a rail track consisting of two rails 3 or a rail track section.
  • the guide 4 receives a guide plate 5 which can be moved horizontally on the guide 4 in the direction of the double arrow 6 by hand or by means of a special drive known per se.
  • the displacement is preferably carried out via a threaded spindle with an associated nut.
  • a carriage 7 is arranged, which can be raised or lowered in a guide, not shown, in the direction of the double arrow 8.
  • the carriage 7 is raised and lowered, for example, via a threaded spindle, not shown, which is connected to a drive motor.
  • the carriage 7 carries a horizontal pin 9a, running perpendicular to the plane of the drawing, on which a lever 9 is pivotally attached.
  • the pivoting of this lever 9 can also take place, for example, via a threaded spindle, not shown, which is rotated by hand or by a drive.
  • the end of this lever 9 located at the top of the drawing is designed as a pointer 10 which interacts with a scale 11 which is only indicated.
  • the lever 9 can be set in a predetermined angular position in a simple manner via this scale 11.
  • the lower end of the lever 9 carries an approximately V-shaped bracket 12 which, in this exemplary embodiment, is formed from two plates 13 connected to one another at a predetermined distance. These plates are 13 arranged perpendicular to the plane of the drawing one behind the other so that only the front plate 13 can be seen.
  • the two plates 13 are connected to the lever 9 either by screws or by welding.
  • a deflection roller 16, 17 is rotatably arranged between the two legs 14, 15 of the two plates 13, each deflection roller 16, 17 being formed, for example, from a plurality of ball bearings arranged next to one another on an axis.
  • the distance between the two deflection rollers 16, 17 and thus also between the two legs 14, 15 of the bracket 12 is slightly larger than the width of the head 18 of the track rail 3.
  • a drive roller 19 which is attached to the shaft 20 of a drive motor, not shown, which is known per se.
  • the drive motor with the drive roller 19 is carried by a bracket, not shown, which can be raised and lowered on the carriage 7.
  • This console is moved in the direction of the double arrow 21 via a gas spring, also not shown, for example a pneumatically actuated piston-cylinder unit.
  • a gas spring also not shown, for example a pneumatically actuated piston-cylinder unit.
  • an endless grinding belt 22 is placed over it, which is so large or long that it can also be guided over the two deflection rollers 16, 17.
  • the drive roller 19 is moved upwards and the grinding belt 22 is tensioned by this movement. This tension causes the grinding belt 22 to run straight between the two deflection rollers 16, 17.
  • the device 1 described is placed on a rail track or a rail track section with its rollers, not shown, for machining the rail 3 and then move the guide plate horizontally until the bracket 12 and thus the carriage 7 is located centrally above the rail 3 . Then the carriage 7 is moved down until the lower surface of the two rollers 16, 17 is a predetermined amount below the running surface 2 of the track rail 3 (Fig. 1). Due to the tension or preload of the drive roller 19, the same moves downward, so that the grinding belt 22 between the two deflection rollers 16, 17 can assume the position shown in FIG. 1, in which the tread 2 despite its curvature over its entire width is wrapped or covered by the grinding belt 22.
  • the motor of the drive roller 19 is expediently switched on, so that the grinding belt 22 rotates in the direction of the arrow 23.
  • the running surface 2 of the track rail 3 is ground by this circumferential grinding belt 22, the device 1 possibly being able to be moved in the axial direction of the track rail 3.
  • the desired curvature of the tread 2 arises as a function of the tension of the grinding belt 22 and the height of the deflection rollers 16, 17.
  • the bracket 12 and thus also the slide 7 is located centrally above the track rail 3, so that a symmetrical running surface 2 is created.
  • a symmetrically running tread 2 of the track rail 3 can be produced.
  • Such displacement and pivoting also takes place, for example, when a grooved rail is ground on its running surface.
  • a deflection roller 16 or 17 then projects into the groove of a track rail with a correspondingly small diameter.
  • a pressure plate 25 is provided on the bracket 12, which is pressed against the running surface 2 of the track rail 3 by a pressure member 26, which is designed, for example, as a piston-cylinder unit which can be acted upon pneumatically.
  • This pressure must be chosen so that the grinding belt 22 does not wear out too quickly.
  • the shape of the running surface 2 of the track rail 3 is to be influenced. In order to avoid undesired heating of the pressure plate 25, the same can have channels through which a coolant of a cooling circuit is conveyed.
  • the grinding dust removed from the tread 2 by the sanding belt 22 is laterally removed and does not reach the tread 2. The resulting impairment of the tread 2 is therefore excluded.
  • bracket 12 can also be firmly connected to the carriage 7 or the guide plate 5.
  • the movement of bracket 12, drive roller 19 or tension roller, carriage 7 and guide plate 5 can be carried out via a program control known per se.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Method of grinding the upper surfaces and/or the guide surfaces of rails or the like, in which the upper surfaces are ground by an endless, rotating grinding belt which can be moved towards the upper surfaces, the upper surfaces and/or the guide surfaces of the rail being ground by a grinding belt rotating transversely to the longitudinal axis of the rail and at least partly wrapping around the upper surfaces and/or the guide surfaces under pretension, as well as a device for carrying out the method, consisting of a moveable grinding machine guided on at least one rail of the track and having an endless grinding belt which rotates via a drive pulley and a deflection means arranged at a distance therefrom and can be moved via the same towards the surfaces of the rail to be ground, characterised in that the deflection means is formed from two deflection pulleys (16, 17) which are at a relatively small distance from one another, in that the axes of the deflection pulleys (16, 17) and of the drive pulley (19) are arranged parallel to the longitudinal axis of the rail (3) and thus the grinding belt (22) rotates transversely to the longitudinal axis of the rail (3), and in that at least one deflection pulley (16, 17), for the belt to partly wrap around the surfaces (2) of the rail (3), can be lowered below the top edge of the upper surface (2) of the rail (3).

Description

Die Erfindung bezieht sich auf ein Verfahren zum Schleifen der aus Lauffläche, Kopfabrundung und Außenflächen bestehenden Schienenkopf­oberfläche, den sogenannten Lauf- und Führungsflächen von Schienen oder dgl., bei dem die Lauf- und/oder Führungsflächen durch ein end­loses, umlaufendes und gegen die Flächen bewegbares Schleifband ge­schliffen werden, sowie auf eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for grinding the rail head surface consisting of the running surface, rounded corners and outer surfaces, the so-called running and guiding surfaces of rails or the like, in which the running and / or guiding surfaces can be moved by an endless, revolving surface and against the surfaces Grinding belt are ground, as well as on a device for performing this method.

Im Rahmen der Gleisverbesserung und der Gleiserhaltung kommt der Bear­beitung der Lauf- und Führungsflächen von Schienen - dies gilt sowohl für Breitfuß- als auch für Rillenschienen - eine ständig steigende Be­deutung zu.As part of track improvement and track maintenance, machining the running and guiding surfaces of rails - this applies to both wide-foot and grooved rails - is becoming increasingly important.

Schweißwülste, wie sie beispielsweise bei der aluminothermischen Ver­bindungsschweißung entstehen, überschüssiges Schweißgut, welches bei der elektrischen Auftragsschweißung sowohl bei neuen als auch bei in­standzusetzenden Gleisschienen auftritt, aber auch wellen- oder rif­felförmige Unebenheiten der Lauf- bzw. Führungsflächen der Gleis­schienen, die die Laufeigenschaften von Schienenfahrzeugen erheblich beeinträchtigen, werden durch einen Schleifvorgang bzw. ein Schleif­verfahren beseitigt.Weld beads, such as those produced in the case of aluminothermic connection welding, excess weld metal that occurs during electrical build-up welding on both new and repairable track rails, but also undulating or corrugated unevenness in the running or guide surfaces of the track rails, which affect the running properties of rail vehicles significantly impair, are eliminated by a grinding process or a grinding process.

Zur Durchführung eines solchen Schleifverfahrens ist aus der DE-OS 28 01 110 eine fahrbare Schienenschleifmaschine bekannt, mit der die Lauffläche gemäß dem Ausführungsbeispiel der Fig. 6 durch ein end­loses, umlaufendes Schleifband bearbeitet wird, welches gegen die Lauffläche der Gleisschiene gedrückt wird. Dabei wird das Schleifband einerseits von einer Antriebsrolle und andererseits von einer wei­teren, mit Abstand von der Antriebsrolle angeordneten, der Umlenkung dienenden Rolle aufgenommen, die beide um eine horizontale Achse drehbar sind, die quer zur Längsachse der Gleisschiene verläuft. Das bedeutet, daß das Schleifband in Richtung der Gleisschiene und damit in Fahrtrichtung bzw. entgegengesetzt der Fahrtrichtung der Maschine umläuft. Die Antriebsrolle und die Umlenkrolle sind entweder voll­kommen zylinderisch oder, zur besseren Führung des Schleifbandes, leicht nach außen gewölbt bzw. konvex ausgebildet. Dies hat zur Folge, daß ein solches Schleifverfahren ausschließlich eine ebene Fläche auf der Lauffläche der Schiene hinterläßt, durch die nur in diesem Bereich Unebenheiten bzw. Schweißwülste beseitigt werden. Um z. B. gewölbte Laufflächen vollständig zu bearbeiten, werden daher mehrere derartiger Schleifeinheiten hintereinander in einer Maschine angeordnet, wobei jede nachfolgende Schleifeinheit gegenüber der vorhergehenden Schleif­einheit um einige Winkelgrade in Längsrichtung der Gleisschiene gedreht ist. Nach dieser Bearbeitung besteht die Lauffläche aus mehreren ebenen, jeweils um einige Winkelgrade gegeneinander geneigten Flächen, die der angestrebten Form der Lauffläche sehr nahe kommen, diese jedoch niemals erreichen. Die Lauffläche wird immer einen poly­gonalen Querschnitt besitzen. Weiterhin hat ein solches Schleifver­fahren den großen Nachteil, daß der abgelöste Schleifstaub sich in Längsrichtung der Schiene bewegt bzw. fliegt und sich auf der Schiene bzw. deren Lauffläche festsetzen kann. Diese vorbekannte Vorrichtung erfordert einen erheblichen finanziellen Aufwand und ist dennoch zur Bearbeitung von Schweißwülsten an Gleisverbindungen sowie von kurzen Gleisstücken, die vor dem Einbau durch Auftragsschweißungen in ihrer Eigenschaft verbessert werden, ungeeignet.From DE-OS 28 01 110 a mobile rail grinding machine is known for carrying out such a grinding method, with which the tread according to the exemplary embodiment of FIG. 6 is processed by an endless, rotating grinding belt which is pressed against the running surface of the track rail. The sanding belt is picked up on the one hand by a drive roller and on the other hand by another roller, which is arranged at a distance from the drive roller and serves to deflect, both of which can be rotated about a horizontal axis which runs transversely to the longitudinal axis of the track rail. This means that the sanding belt rotates in the direction of the track rail and thus in the direction of travel or opposite to the direction of travel of the machine. The drive roller and the deflection roller are either completely cylindrical or, for better guidance of the sanding belt, slightly curved outwards or convex. The consequence of this is that such a grinding process only leaves a flat surface on the running surface of the rail, by means of which unevenness or welding beads are eliminated only in this area. To z. B. to fully process curved treads, several such grinding units are therefore arranged one behind the other in a machine, each subsequent grinding unit being rotated by a few angular degrees in the longitudinal direction of the track rail relative to the previous grinding unit. After this processing, the tread consists of several planes, each inclined by a few degrees to each other, which come very close to the desired shape of the tread, but never reach it. The tread will always have a polygonal cross-section. Furthermore, such a grinding method has the major disadvantage that the loosened grinding dust moves or flies in the longitudinal direction of the rail and can settle on the rail or its running surface. This previously known device requires a considerable financial outlay and is nevertheless unsuitable for machining weld beads on track connections and short track sections, the properties of which are improved prior to installation by build-up welding.

Aus der EP-PS 0 110 246 ist ebenfalls eine Vorrichtung zur schleifen­den Bearbeitung der Lauffläche von Gleisschienen bekannt, die einen erheblich einfacheren und damit auch preiswerteren Aufbau besitzt. Auch bei dieser Vorrichtung wird die Kopf- bzw. Lauffläche mittels eines endlosen, umlaufenden Schleifbandes bearbeitet, welches über eine Antriebsrolle und eine Anpreßrolle geführt ist, die beide um eine horizontale und quer zur Schiene verlaufende Achse drehbar sind. Damit läuft auch hier das Schleifband in Längsrichtung der Schiene um, so daß auch hier stets eine polygonale Kopf- bzw. Lauffläche nach der Be­arbeitung bzw. dem Schleifvorgang vorhanden ist. Gemäß dem Ausfüh­rungsbeispiel der Fig. 4 ist zwar die Anpreßrolle als Profilrolle aus­gebildet, deren freier Querschnitt der Lauffläche des Gleiskopfes ent­spricht. Eine solche profilierte Anpreßrolle führt jedoch in den Rand­bereichen des Schleifbandes zu einer unerwünschten Dehnung, die einen sehr raschen Verschleiß bzw. eine rasche Zerstörung des Schleifbandes zur Folge hat. Aus diesem Grunde wird eine derartig profilierte An­preßrolle in der Praxis nicht eingesetzt.From EP-PS 0 110 246 a device for grinding the tread of track rails is also known, the one has a considerably simpler and therefore also cheaper structure. In this device, too, the head or running surface is processed by means of an endless, revolving grinding belt which is guided over a drive roller and a pressure roller, both of which can be rotated about an axis which runs horizontally and transversely to the rail. So that here too the grinding belt runs in the longitudinal direction of the rail, so that here too there is always a polygonal head or running surface after the processing or the grinding process. According to the embodiment of FIG. 4, the pressure roller is designed as a profile roller, the free cross section of which corresponds to the running surface of the track head. Such a profiled pressure roller, however, leads to undesired stretching in the edge regions of the sanding belt, which leads to very rapid wear or rapid destruction of the sanding belt. For this reason, such a pressure roller is not used in practice.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren aufzu­zeigen, mit dem es mit geringem Aufwand und ohne Schwierigkeiten mög­lich ist, die Lauf- und/oder Führungsflächen von Schienen zu schleifen und das Entstehen von polygonalen Flächen auszuschließen.The invention is therefore based on the object of demonstrating a method with which it is possible with little effort and without difficulty to grind the running and / or guide surfaces of rails and to rule out the formation of polygonal surfaces.

Zur Lösung dieser Aufgabe wird bei einem Verfahren der eingangs be­schriebenen Gattung vorgeschlagen, daß die Lauf- und/oder Führungs­flächen der Schiene von einem quer zur Längsachse der Schiene umlau­fenden und die Lauf- und/oder Führungsflächen unter Vorspannung zu­mindest teilweise umschlingenden Schleifband geschliffen werden.To solve this problem, it is proposed in a method of the type described in the introduction that the running and / or guiding surfaces of the rail are ground by an abrasive belt that runs at least partially around the longitudinal axis of the rail and that wraps around the running and / or guiding surfaces under tension.

Ein solches Schleifverfahren stellt eine Bearbeitung auch gewölbter Flächen der Schiene sicher; polygonale Flächen, wie bei den bisher be­kannten Verfahren üblich, entstehen nicht mehr. Das Verfahren ist so­wohl bei Stoßverbindungen, bei Auftragsschweißungen und zur Besei­tigung von wellen- und/oder rillenförmigen Unebenheiten durchführbar. Auch Rillenschienen können nach diesem Verfahren einwandfrei bearbei­tet werden.Such a grinding process ensures processing of curved surfaces of the rail; Polygonal surfaces, as is customary in the previously known methods, no longer arise. The method can be carried out both for butt joints, for surfacing and for eliminating undulations and / or grooves in the form of grooves. Grooved rails can also be processed perfectly using this method.

Weitere Merkmale des erfindungsgemäßen Verfahrens sowie die Ausbildung einer Vorrichtung zur Durchführung dieses Verfahrens sind in den An­sprüchen 2 - 23 offenbart.Further features of the method according to the invention and the design of a device for carrying out this method are disclosed in claims 2-23.

Das erfindungsgemäße Verfahren wird nachfolgend anhand in einer Zeich­nung in stark vereinfachter Weise dargestellten Vorrichtungen näher erläutert. Dabei zeigen

  • Fig. 1 eine Aufrißdarstellung der wesentlichen Teile einer Vor­richtung gemäß der Erfindung und
  • Fig. 2 eine besondere Ausbildung eines Bügels mit Umlenkrollen ent­sprechend der Fig. 1.
The method according to the invention is explained in more detail below with reference to the devices shown in a drawing in a highly simplified manner. Show
  • Fig. 1 is an elevation of the essential parts of a device according to the invention and
  • 2 shows a special design of a bracket with deflection rollers corresponding to FIG. 1.

Von einer Vorrichtung 1 zur schleifenden Bearbeitung der Lauffläche 2 einer Gleisschiene 3 ist in der Fig. 1 nur eine Führung 4 gezeigt, die in an sich bekannter, nicht dargestellter Weise von einem Gestell ge­tragen wird, welches beispielsweise über vier Laufrollen von Hand oder mittels eines besonderen Antriebes auf einem aus zwei Schienen 3 be­stehenden Schienenstrang bzw. einem Schienenstrangteilstück verfahren werden kann.Of a device 1 for grinding the tread 2 of a track rail 3, only one guide 4 is shown in FIG. 1, which is carried in a manner known per se, not shown, from a frame which can be carried out, for example, by means of four castors by hand or by means of a special drive can be moved on a rail track consisting of two rails 3 or a rail track section.

Die Führung 4 nimmt eine Führungsplatte 5 auf, die auf der Führung 4 horizontal in Richtung des Doppelpfeiles 6 von Hand oder mittels eines besonderen, an sich bekannnten Antriebes horizontal verschoben werden kann. Vorzugsweise erfolgt die Verschiebung über eine Gewindespindel mit zugeordneter Mutter. Auf dieser Führungsplatte 5 ist ein Schlit­ten 7 angeordnet, der in einer nicht dargestellten Führung in Richtung des Doppelpfeiles 8 gehoben oder abgesenkt werden kann. Das Heben und Senken des Schlittens 7 erfolgt beispielsweise über eine nicht ge­zeichnete und mit einem Antriebsmotor verbundene Gewindespindel.The guide 4 receives a guide plate 5 which can be moved horizontally on the guide 4 in the direction of the double arrow 6 by hand or by means of a special drive known per se. The displacement is preferably carried out via a threaded spindle with an associated nut. On this guide plate 5, a carriage 7 is arranged, which can be raised or lowered in a guide, not shown, in the direction of the double arrow 8. The carriage 7 is raised and lowered, for example, via a threaded spindle, not shown, which is connected to a drive motor.

An seinem unteren Ende trägt der Schlitten 7 einen horizontalen, senk­recht zur Zeichnungsebene verlaufenden Zapfen 9a, auf dem ein Hebel 9 schwenkbar befestigt ist. Das Verschwenken dieses Hebels 9 kann bei­spielsweise ebenfalls über eine nicht dargestellte Gewindespindel er­folgen, die von Hand oder durch einen Antrieb gedreht wird. Das in der Zeichnung oben befindliche Ende dieses Hebels 9 ist als Zeiger 10 aus­gebildet, der mit einer nur angedeuteten Skala 11 zusammenwirkt. Über diese Skala 11 kann der Hebel 9 in einfacher Weise in einer vorgege­benen Winkellage eingestellt werden.At its lower end, the carriage 7 carries a horizontal pin 9a, running perpendicular to the plane of the drawing, on which a lever 9 is pivotally attached. The pivoting of this lever 9 can also take place, for example, via a threaded spindle, not shown, which is rotated by hand or by a drive. The end of this lever 9 located at the top of the drawing is designed as a pointer 10 which interacts with a scale 11 which is only indicated. The lever 9 can be set in a predetermined angular position in a simple manner via this scale 11.

Das untere Ende des Hebels 9 trägt einen etwa V-förmigen Bügel 12, der in diesem Ausführungsbeispiel aus zwei mit vorgegebenem Abstand mit­einander verbundenen Platten 13 gebildet ist. Diese Platten 13 sind senkrecht zur Zeichnungsebene hintereinander angeordnet, so daß nur die vordere Platte 13 zu sehen ist. Die beiden Platten 13 sind mit dem Hebel 9 entweder durch Schrauben oder mittels Schweißung verbunden. An den Enden der Schenkel 14, 15 des Bügels 12 ist zwischen den beiden Schenkeln 14, 15 der beiden Platten 13 jeweils eine Umlenkrolle 16, 17 drehbar angeordnet, wobei jede Umlenkrolle 16, 17 beispielsweise aus mehreren nebeneinander auf einer Achse angeordneten Kugellagern gebildet ist. Der Abstand zwischen den beiden Umlenkrollen 16, 17 und damit aber auch zwischen den beiden Schenkeln 14, 15 des Bügels 12 ist geringfügig größer als die Breite des Kopfes 18 der Gleisschiene 3.The lower end of the lever 9 carries an approximately V-shaped bracket 12 which, in this exemplary embodiment, is formed from two plates 13 connected to one another at a predetermined distance. These plates are 13 arranged perpendicular to the plane of the drawing one behind the other so that only the front plate 13 can be seen. The two plates 13 are connected to the lever 9 either by screws or by welding. At the ends of the legs 14, 15 of the bracket 12, a deflection roller 16, 17 is rotatably arranged between the two legs 14, 15 of the two plates 13, each deflection roller 16, 17 being formed, for example, from a plurality of ball bearings arranged next to one another on an axis. The distance between the two deflection rollers 16, 17 and thus also between the two legs 14, 15 of the bracket 12 is slightly larger than the width of the head 18 of the track rail 3.

Am oberen Ende des Schlittens 7 befindet sich eine Antriebsrolle 19, die auf der Welle 20 eines nicht dargestellten, an sich bekannten An­triebsmotors befestigt ist. Der Antriebsmotor mit der Antriebsrolle 19 wird von einer nicht gezeichneten Konsole getragen, die heb- und senk­bar am Schlitten 7 geführt ist. Diese Konsole wird über eine ebenfalls nicht gezeichnete Gasfeder, beispielsweise eine pneumatisch beauf­schlagbare Kolbenzylindereinheit, in Richtung des Doppelpfeiles 21 bewegt. In der unteren Stellung der Antriebsrolle 19 wird über die­selbe ein endloses Schleifband 22 gelegt, welches so groß bzw. lang ausgebildet ist, daß es auch über die beiden Umlenkrollen 16, 17 ge­führt werden kann. Anschließend wird die Antriebsrolle 19 nach oben bewegt und dabei durch diese Bewegung das Schleifband 22 gespannt. Diese Spannung führt dazu, daß das Schleifband 22 zwischen den beiden Umlenkrollen 16, 17 gerade verläuft.At the upper end of the carriage 7 there is a drive roller 19 which is attached to the shaft 20 of a drive motor, not shown, which is known per se. The drive motor with the drive roller 19 is carried by a bracket, not shown, which can be raised and lowered on the carriage 7. This console is moved in the direction of the double arrow 21 via a gas spring, also not shown, for example a pneumatically actuated piston-cylinder unit. In the lower position of the drive roller 19, an endless grinding belt 22 is placed over it, which is so large or long that it can also be guided over the two deflection rollers 16, 17. Subsequently, the drive roller 19 is moved upwards and the grinding belt 22 is tensioned by this movement. This tension causes the grinding belt 22 to run straight between the two deflection rollers 16, 17.

Die beschriebene Vorrichtung 1 wird zur Bearbeitung der Schiene 3 auf einen Schienenstrang bzw. ein Schienenstrangteilstück mit ihren nicht dargestellten Laufrollen aufgesetzt und anschließend die Führungs­platte so weit horizontal verfahren, bis sich der Bügel 12 und damit aber auch der Schlitten 7 mittig über der Schiene 3 befindet. Danach wird der Schlitten 7 nach unten bewegt und zwar so weit, bis sich die untere Fläche der beiden Laufrollen 16, 17 um ein vorgegebenes Maß unterhalb der Lauffläche 2 der Gleisschiene 3 befindet (Fig. 1). Durch die Spannung bzw. Vorspannung der Antriebsrolle 19 bewegt sich die­selbe dabei nach unten, so daß das Schleifband 22 zwischen den beiden Umlenkrollen 16, 17 die in Fig. 1 gezeichnete Lage einnehmen kann, in der die Lauffläche 2 trotz ihrer Wölbung über ihre gesamte Breite von dem Schleifband 22 umschlungen bzw. abgedeckt ist. Während dieser Be­ wegung des Schlittens 7 ist zweckmäßigerweise der Motor der Antriebs­rolle 19 angeschaltet, so daß das Schleifband 22 in Richtung des Pfeiles 23 umläuft. Durch dieses umlaufende Schleifband 22 wird die Lauffläche 2 der Gleisschiene 3 geschliffen, wobei die Vorrichtung 1 gegebenenfalls in axialer Richtung der Gleisschiene 3 verfahren werden kann. In Abhängigkeit von der Spannung des Schleifbandes 22 und der Höhenlage der Umlenkrollen 16, 17 entsteht die angestrebte Wölbung der Lauffläche 2.The device 1 described is placed on a rail track or a rail track section with its rollers, not shown, for machining the rail 3 and then move the guide plate horizontally until the bracket 12 and thus the carriage 7 is located centrally above the rail 3 . Then the carriage 7 is moved down until the lower surface of the two rollers 16, 17 is a predetermined amount below the running surface 2 of the track rail 3 (Fig. 1). Due to the tension or preload of the drive roller 19, the same moves downward, so that the grinding belt 22 between the two deflection rollers 16, 17 can assume the position shown in FIG. 1, in which the tread 2 despite its curvature over its entire width is wrapped or covered by the grinding belt 22. During this loading movement of the carriage 7, the motor of the drive roller 19 is expediently switched on, so that the grinding belt 22 rotates in the direction of the arrow 23. The running surface 2 of the track rail 3 is ground by this circumferential grinding belt 22, the device 1 possibly being able to be moved in the axial direction of the track rail 3. The desired curvature of the tread 2 arises as a function of the tension of the grinding belt 22 and the height of the deflection rollers 16, 17.

Wie bereits oben ausgeführt, befindet sich der Bügel 12 und damit auch der Schlitten 7 mittig über der Gleisschiene 3, so daß eine symme­trische Lauffläche 2 entsteht. Durch entsprechendes horizontales Ver­fahren der Führungsplatte 5 und/oder Verschwenken des Bügels 12 über den Zapfen 9a des Hebels 9 kann eine asymmetrisch verlaufende Lauf­fläche 2 der Gleisschiene 3 erzeugt werden. Eine solche Verschiebung und Verschwenkung findet beispielsweise auch dann statt, wenn eine Rillenschiene an ihrer Lauffläche geschliffen wird. Hier ragt dann eine Umlenkrolle 16 oder 17 bei entsprechend kleinem Durchmesser in die Rille einer Gleisschiene. In Abhängigkeit von dem Schwenkwinkel des Bügels 12 kann es erforderlich sein, an bzw. zwischen den Schen­keln 14, 15 der Platten 13 zusätzliche Führungsrollen 24 vorzusehen, die in Fig. 1 angedeutet sind und die sicherstellen sollen, daß das Schleifband 22 nicht in unerwünschter Weise an dem Bügel 12, dem He­bel 8 oder sonstigen Teilen schleift und damit zerstört wird.As already stated above, the bracket 12 and thus also the slide 7 is located centrally above the track rail 3, so that a symmetrical running surface 2 is created. By moving the guide plate 5 appropriately horizontally and / or pivoting the bracket 12 over the pin 9a of the lever 9, an asymmetrically running tread 2 of the track rail 3 can be produced. Such displacement and pivoting also takes place, for example, when a grooved rail is ground on its running surface. A deflection roller 16 or 17 then projects into the groove of a track rail with a correspondingly small diameter. Depending on the pivoting angle of the bracket 12, it may be necessary to provide additional guide rollers 24 on or between the legs 14, 15 of the plates 13, which are indicated in FIG. 1 and which are intended to ensure that the grinding belt 22 does not undesirably on the bracket 12, the lever 8 or other parts grinds and is destroyed.

Bei dem Ausführungsbeispiel der Fig. 2 ist am Bügel 12 eine Druck­platte 25 vorgesehen, die durch ein Druckglied 26, welches beispiels­weise als pneumatisch beaufschlagbare Kolben-Zylinder-Einheit ausge­bildet ist, gegen die Lauffläche 2 der Gleisschiene 3 gedrückt wird. Dieser Druck muß dabei so gewählt werden, daß das Schleifband 22 nicht zu rasch verschleißt. In Abhängigkeit von der Form der Druckfläche und der Breite der Druckplatte 25 ist die Form der Lauffläche 2 der Gleis­schiene 3 zu beeinflussen. Um ein unerwünschtes Erhitzen der Druck­platte 25 zu vermeiden, kann dieselbe Kanäle aufweisen, durch die ein Kühlmittel eines Kühlkreislaufes gefördert wird.In the embodiment of FIG. 2, a pressure plate 25 is provided on the bracket 12, which is pressed against the running surface 2 of the track rail 3 by a pressure member 26, which is designed, for example, as a piston-cylinder unit which can be acted upon pneumatically. This pressure must be chosen so that the grinding belt 22 does not wear out too quickly. Depending on the shape of the pressure surface and the width of the pressure plate 25, the shape of the running surface 2 of the track rail 3 is to be influenced. In order to avoid undesired heating of the pressure plate 25, the same can have channels through which a coolant of a cooling circuit is conveyed.

Der von dem Schleifband 22 von der Lauffläche 2 abgenommene Schleif­staub wird seitlich entfernt und gelangt nicht auf die Lauffläche 2. Daraus resultierende Beeinträchtigungen der Lauffläche 2 sind daher ausgeschlossen.The grinding dust removed from the tread 2 by the sanding belt 22 is laterally removed and does not reach the tread 2. The resulting impairment of the tread 2 is therefore excluded.

In Abänderung des erläuterten Ausführungsbeispieles ist es möglich, die Antriebsrolle 19 und deren Motor ortsfest anzuordnen und zu­sätzlich eine besondere Spannrolle für das Schleifband 22 vorzusehen. Bedarfsweise kann auch der Bügel 12 fest mit dem Schlitten 7 bzw. der Führungsplatte 5 verbunden sein. Die Bewegung von Bügel 12, Antriebs­rolle 19 bzw. Spannrolle, Schlitten 7 und Führungsplatte 5 kann über eine an sich bekannte Programmsteuerung erfolgen.In a modification of the exemplary embodiment explained, it is possible to arrange the drive roller 19 and its motor in a stationary manner and additionally to provide a special tensioning roller for the grinding belt 22. If necessary, the bracket 12 can also be firmly connected to the carriage 7 or the guide plate 5. The movement of bracket 12, drive roller 19 or tension roller, carriage 7 and guide plate 5 can be carried out via a program control known per se.

Claims (23)

1. Verfahren zum Schleifen der Lauf- und/oder Führungsflächen von Schienen oder dgl., bei dem die Laufflächen durch ein endloses, um­laufendes und gegen die Laufflächen bewegbares Schleifband ge­schliffen werden, dadurch gekennzeichnet, daß die Lauf- und/oder Führungsflächen der Schiene von einem quer zur Längsachse der Schiene umlaufenden und die Lauf- und/oder Führungsflächen unter Vorspannung zumindest teilweise umschlingenden Schleifband ge­schliffen werden.1. A method for grinding the running and / or guide surfaces of rails or the like., In which the running surfaces are ground by an endless, rotating and movable grinding belt against the running surfaces, characterized in that the running and / or guide surfaces of the rail of a grinding belt running transversely to the longitudinal axis of the rail and at least partially wrapping around the running and / or guiding surfaces under pretension are ground. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Lauf- und/oder Führungsflächen der Schiene unter vollständiger Umschlin­gung durch das Schleifband geschliffen werden.2. The method according to claim 1, characterized in that the running and / or guide surfaces of the rail are ground with complete wrap through the grinding belt. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Vor­spannung einstellbar ist.3. The method according to claim 1, characterized in that the bias is adjustable. 4. Vorrichtung zum Schleifen der Lauf- und/oder Führungsflächen von Schienen oder dgl., insbesondere zur Durchführung des Verfahrens nach mindestens einem der Ansprüche 1 bis 3, bestehend aus einer auf zumindest einer Schiene des Gleises geführten fahrbaren Schleifmaschine mit einem endlosen Schleifband, welches über eine Antriebsrolle und einer mit Abstand davon angeordneten Umlenkung umläuft und über dieselben gegen die zu schleifenden Flächen der Schiene bewegbar ist, dadurch gekennzeichnet, daß die Umlenkung aus zwei verhältnismäßig geringen Abstand voneinander aufweisenden Um­lenkrollen (16, 17) gebildet ist, daß die Achsen der Umlenkrollen (16, 17) und der Antriebsrolle (19) parallel zur Längsachse der Schiene (3) angeordnet sind und somit das Schleifband (22) quer zur Längsachse der Schiene (3) umläuft und daß zumindest eine Umlenk­rolle (16, 17) zur teilweisen Umschlingung der Flächen (2) der Schiene (3) unter die Oberkante der Lauffläche (2) der Schiene (3) absenkbar ist.4. Device for grinding the running and / or guide surfaces of rails or the like., In particular for performing the method according to at least one of claims 1 to 3, consisting of a guided on at least one rail of the track grinding machine with an endless grinding belt, which rotates via a drive roller and a deflection arranged at a distance therefrom and can be moved over the same against the surfaces of the rail to be ground, characterized in that the deflection is formed from two relatively small spaced deflection rollers (16, 17) that the axes of the Deflection rollers (16, 17) and the drive roller (19) are arranged parallel to the longitudinal axis of the rail (3) and thus the grinding belt (22) rotates transversely to the longitudinal axis of the rail (3) and that at least one deflection roller (16, 17) for partial Wrapping the surfaces (2) of the rail (3) under the upper edge of the tread (2) of the rail (3) a is lowerable. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die An­triebsrolle (19) mit Antriebsmotor und die beiden Umlenkrollen (16, 17) auf einem heb- und senkbaren Schlitten (7) angeordnet sind.5. The device according to claim 4, characterized in that the drive roller (19) with the drive motor and the two deflection rollers (16, 17) are arranged on a liftable and lowerable carriage (7). 6. Vorrichtung nach Anspruch 4 und/oder 5, dadurch gekennzeichnet, daß der Schlitten (7) auf einer horizontal verschiebbaren Füh­rungsplatte (5) angeordnet ist.6. The device according to claim 4 and / or 5, characterized in that the carriage (7) is arranged on a horizontally displaceable guide plate (5). 7. Vorrichtung nach mindestens einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß dem Schleifband (22) eine Spannrolle zuge­ordnet ist.7. The device according to at least one of claims 4 to 6, characterized in that the grinding belt (22) is assigned a tension roller. 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Spannrolle eine Feder zugeordnet ist.8. The device according to claim 7, characterized in that the tensioning roller is assigned a spring. 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Feder als Gasdruckfeder ausgebildet ist.9. The device according to claim 8, characterized in that the spring is designed as a gas pressure spring. 10. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Feder durch eine pneumatisch beaufschlagbare Kolben-Zylinder-Einheit ge­bildet ist.10. The device according to claim 8, characterized in that the spring is formed by a pneumatically actuated piston-cylinder unit. 11. Vorrichtung nach mindestens einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die Spannrolle durch die Antriebsrolle (19) gebildet ist.11. The device according to at least one of claims 7 to 10, characterized in that the tensioning roller is formed by the drive roller (19). 12. Vorrichtung nach mindestens einem der Ansprüche 4 bis 11, dadurch gekennzeichnet, daß die beiden Umlenkrollen (16,17) auf einem schwenkbaren Bügel (12) angeordnet sind.12. The device according to at least one of claims 4 to 11, characterized in that the two deflecting rollers (16, 17) are arranged on a pivotable bracket (12). 13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß der Bü­gel (12) U- bzw. V-förmig ausgebildet ist und die Umlenkrollen (16,17) an den Schenkelenden des Bügels (12) gelagert sind.13. The apparatus according to claim 12, characterized in that the bracket (12) is U- or V-shaped and the deflection rollers (16, 17) are mounted on the leg ends of the bracket (12). 14. Vorrichtung nach Anspruch 12 und/oder 13, dadurch gekennzeichnet, daß der Bügel (12) aus zwei mit Abstand voneinander angeordneten Platten (13) gebildet ist, zwischen denen die Umlenkrollen (16,17) gelagert sind.14. The apparatus according to claim 12 and / or 13, characterized in that the bracket (12) is formed from two spaced plates (13), between which the deflection rollers (16, 17) are mounted. 15. Vorrichtung nach mindestens einem der Ansprüche 4 bis 14, dadurch gekennzeichnet, daß jeder Umlenkrolle (16,17) mindestens eine Füh­rungsrolle (24) zugeordnet ist.15. The device according to at least one of claims 4 to 14, characterized in that each deflection roller (16, 17) is assigned at least one guide roller (24). 16. Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, daß die Füh­rungsrollen (24) mit Abstand von den Umlenkrollen (16,17) an den Schenkeln (14,15) des Bügels (12) gelagert sind.16. The apparatus according to claim 15, characterized in that the guide rollers (24) are mounted at a distance from the deflecting rollers (16, 17) on the legs (14, 15) of the bracket (12). 17. Vorrichtung nach mindestens einem der Ansprüche 4 bis 16, dadurch gekennzeichnet, daß die Umlenkrollen (16,17) und/oder die Füh­rungsrollen (24) durch mindestens zwei nebeneinander angeordnete Kugel- oder Rollenlager gebildet sind.17. The device according to at least one of claims 4 to 16, characterized in that the deflecting rollers (16, 17) and / or the guide rollers (24) are formed by at least two ball or roller bearings arranged next to one another. 18. Vorrichtung nach mindestens einem der Ansprüche 4 bis 17, dadurch gekennzeichnet, daß zwischen den beiden Umlenkrollen (16, 17) eine mit dem Schleifband (22) zusammenwirkende Druckplatte (25) ange­ordnet ist.18. The device according to at least one of claims 4 to 17, characterized in that a pressure plate (25) cooperating with the grinding belt (22) is arranged between the two deflection rollers (16, 17). 19. Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, daß der Druckplatte (25) ein Druckglied (26) zugeordnet ist.19. The apparatus according to claim 18, characterized in that the pressure plate (25) is associated with a pressure member (26). 20. Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß das Druckglied (26) als Feder ausgebildet ist.20. The apparatus according to claim 19, characterized in that the pressure member (26) is designed as a spring. 21. Vorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß das Druckglied (26) durch eine hydraulisch oder pneumatisch beauf­schlagbare Kolben-Zylinder-Einheit gebildet ist.21. The apparatus according to claim 19, characterized in that the pressure member (26) is formed by a hydraulically or pneumatically actuated piston-cylinder unit. 22. Vorrichtung nach mindestens einem der Ansprüche 18 bis 21, dadurch gekennzeichnet, daß die Druckplatte (26) eine profilierte Druck­fläche aufweist.22. The device according to at least one of claims 18 to 21, characterized in that the pressure plate (26) has a profiled pressure surface. 23. Vorrichtung nach mindestens einem der Ansprüche 18 bis 22, dadurch gekennzeichnet, daß die Druckplatte an einen Kühlkreislauf ange­schlossen ist.23. The device according to at least one of claims 18 to 22, characterized in that the pressure plate is connected to a cooling circuit.
EP19890121168 1988-11-26 1989-11-16 Method of and device for grinding the upper surfaces and/or the guide surfaces of rails or like Withdrawn EP0371328A3 (en)

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DE3840006A DE3840006C1 (en) 1988-11-26 1988-11-26
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US5997391A (en) * 1996-12-20 1999-12-07 Speno International Sa Device for the continuous and fine reprofiling in situ of the surface of the head of at least one rail of a railway track
IT202200006317A1 (en) * 2022-03-31 2023-10-01 Salvatore Pugliese Device for roughing and smoothing railway rails

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US7413505B1 (en) * 2007-02-12 2008-08-19 Rowlen Jr Michael A Pipe and shaft sander
RU2016136432A (en) * 2014-12-26 2018-03-15 Сррс Бейджинг Эрки Лоукомоутив Ко., Лтд. RAIL-GRINDING DEVICE AND RAIL-MILLING AND RAIL-GRINDING MACHINE
CN110820445B (en) * 2019-12-04 2024-09-13 北京交通大学 Abrasive belt grinding type full-class steel rail grinding device and grinding method thereof

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US5577954A (en) * 1995-03-10 1996-11-26 Tohokugiken Industries Co., Ltd. Grinding apparatus of welded residue on seam of rail head
US5997391A (en) * 1996-12-20 1999-12-07 Speno International Sa Device for the continuous and fine reprofiling in situ of the surface of the head of at least one rail of a railway track
IT202200006317A1 (en) * 2022-03-31 2023-10-01 Salvatore Pugliese Device for roughing and smoothing railway rails

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US5031365A (en) 1991-07-16
CA1301459C (en) 1992-05-26
EP0371328A3 (en) 1991-07-17
DE3840006C1 (en) 1990-07-26

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