WO1995030878A1 - Track rail contour measurement process - Google Patents

Track rail contour measurement process Download PDF

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Publication number
WO1995030878A1
WO1995030878A1 PCT/AT1995/000085 AT9500085W WO9530878A1 WO 1995030878 A1 WO1995030878 A1 WO 1995030878A1 AT 9500085 W AT9500085 W AT 9500085W WO 9530878 A1 WO9530878 A1 WO 9530878A1
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WO
WIPO (PCT)
Prior art keywords
rail
contour
rail head
longitudinal direction
measurement
Prior art date
Application number
PCT/AT1995/000085
Other languages
German (de)
French (fr)
Inventor
Erich Permann
Franz Schrank
Franz Kulmer
Johann HIRSCHBÖCK
Original Assignee
Erich Permann
Franz Schrank
Franz Kulmer
Hirschboeck Johann
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
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Application filed by Erich Permann, Franz Schrank, Franz Kulmer, Hirschboeck Johann filed Critical Erich Permann
Publication of WO1995030878A1 publication Critical patent/WO1995030878A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08—Measuring installations for surveying permanent way

Definitions

  • the invention relates to a method and a device for performing this method for measuring the shape or the shape deviation of the contour of metallic and non-metallic profile parts, in particular the contour of the rail head of railroad tracks, by scanning the contour, the detected values being converted into analog measurement signals .
  • Rail transport has become increasingly important in recent years. The ecological movement (keyword: "Rolling Country Road) and, in Europe, the development or opening of the Eastern States have contributed to this. Rail transport will continue to play an important role in technology and society in the future.
  • ERSA ⁇ ZBL ⁇ T (RULE 26) dedicated.
  • the rails may continue to be used within precisely defined tolerances. If the degree of wear exceeds the specified limit, the rail heads must be repaired by applying new material - there are already proven methods available - or the worn rail track must be replaced with a new one.
  • the railroad tracks are currently checked by trained trainers by applying appropriate profile templates, manually measuring the degree of wear and then comparing them with a template corresponding to the nominal shape of the rail.
  • the object of the invention is therefore to design a method and a device by means of which the degree of wear of railroad tracks can be determined while keeping the disadvantages mentioned.
  • the object is achieved by the invention.
  • This is characterized in that the contour of the rail head is cyclically scanned along a measuring line which lies transversely to the longitudinal direction of the railroad track, and that the nominal point of the measurement is defined as the point which is perpendicular and centered on a fictitious, at the level of the measuring line Rail head, rail web and rail foot line, the nominal point is determined mathematically, or empirically via a reference rail, and that the measurement signals are evaluated mathematically and compared with a nominal shape of the rail head to be tested.
  • the method according to the invention can of course not only be used on railroad tracks, but also in the production of railroad tracks, but also of other types of profile parts.
  • inductive or capacitive or incremental or optical or acousto-optical or electro-optical or photo-electrical scanning principles are used.
  • this configuration always allows that scanning principle to be used for the control of profile parts, which delivers optimum results with regard to the material used in each case.
  • a device for carrying out the method is provided, which is characterized in that a scanning unit consisting of a basic module and sensor is arranged on a sliding element which is horseshoe-shaped in its basic form in a rail frame enclosing the rail head at a distance transversely to the longitudinal direction of the railway rail trained, arranged Garri ⁇ g and along this retaining ring from one to the other end face is movable, the end faces are designed as stop surfaces for the sliding element, and that the sensor, with respect to its longitudinal direction, has a resilient mounting.
  • the retaining ring is rigidly connected at its end faces to the fixed part of one of two two-part folding elements, and that its movable part can be latched with its free end on the railroad rail in its transition region from the rail web and rail flank.
  • FIG. 1 shows, in the form of a schematic diagram, the relationship between the mechanical and the electrotechnical part of the invention.
  • Fig. 2 the fastening part of the invention is shown.
  • the rail head 5 of a railroad rail 1 is enclosed at a distance and transversely to the longitudinal direction of the railroad rail 1 by a retaining ring 6 which is horseshoe-shaped in its basic form.
  • a sliding element 7 is arranged on this retaining ring 6, on which a scanning unit 8 consisting of the basic module 18 and sensor 9 is seated.
  • the scanning unit 8 can be moved along the retaining ring 6 from one end face to the other end face, these end faces being designed as stop faces.
  • the nominal point 16 for the measurement lies on a fictitious line 14, which runs vertically and centrally at the level of the measuring line through the rail head 5, rail web 2 and rail head 5.
  • the nominal point 16 is determined mathematically or empirically via a reference rail.
  • the measurement signals are evaluated mathematically and compared with a nominal shape of the rail head 5 to be tested.
  • the initially analog measuring signals are fed from the scanning unit 8 to an amplifier 11 via a measuring line 10.
  • the amplified analog measurement signals are then converted into digital signals in an analog / digital converter 12 and sent to a computer 13 for further processing.
  • the measurement signals are recorded in a database in terms of system technology and stored, assigned to the respective rail type.
  • the measurement data are shown numerically and graphically in relation to defined limit values; there the measured values are evaluated mathematically in comparison with a nominal form of the rail head 5 to be tested.
  • the inductance of the coils or their couplings by inductive sensors 9 is or are changed by certain physical influences - in the present case by the material thickness of the railroad track between the nominal point and the sensor head - along the measuring line.
  • the measuring line extends from the rail flank of one to the rail flank of the opposite side of the railroad rail 1. The scanning is carried out in such a way that the mathematical detection of the scanned measuring points can be carried out by means of the computer 13 using the principle of the polar coordinate system.
  • the angle is concrete, let it be called "A”, between a fictitious zero line, the length of which is known, from the transition region 4 to the nominal point 16, and a fictitious straight line, which is an elongated axis of symmetry of the sensor through the nominal point 9 is.
  • the profile of the usually 120 meter long railroad tracks should be measured in the longitudinal direction at intervals of about 5 meters each.
  • FIG. 2 shows a half of the retaining ring 6 with a fixed part 22 of a two-part folding element 21 attached to one end face thereof in the engaged state.
  • a movable part 23 lies with its end near the rail Transitional area 4 between the rail flank 3 and the rail web 2 of the railway rail 1 in a form-fitting manner.
  • the folding element 21 can be designed in such a way that the measuring device can be removed by lifting the movable part 23 in a clockwise direction.

Abstract

The invention relates to a process and device for measuring the contour of metallic and non-metallic sections, especially train track rails. According to the invention, the contour of the rail head (5) is cyclically scanned along a line of measurement transversely to the longitudinal direction of the track rail (1), with the measurement related to a defined reference point (16). The measurement signals thus produced are mathematically evaluated and compared with a reference shape of the rail head (5) to be checked. The device for carrying out the process of the invention is characterised in that a scanning unit (8) is arranged on a slide component (7) fitted in a basically horseshoe-shaped retainer (6) surrounding the rail head (5) at a distance transversely to the longitudinal direction of the track rail (1) and movable along said retainer (6) from one of its faces to the other.

Description

EISENBAHNSCHIENENKONTURMESSVERFAHREN RAILROAD CONTOUR MEASUREMENT METHOD
BESCHREffiUNGDESCRIPTION
Die Erfindung betrifft ein Verfahren und eine Einrichtung zur Durchführung dieses Verfahrens zum Vermessen der Form bzw. der Formabweichung der Kontur von metallischen und nichtmetallischen Profllteilen, insbesondere der Kontur des Schienenkopfes von Eisenbahnschienen, durch Abtastung der Kontur, wobei die erfaßten Werte in analoge Meßsignale umgesetzt werden.The invention relates to a method and a device for performing this method for measuring the shape or the shape deviation of the contour of metallic and non-metallic profile parts, in particular the contour of the rail head of railroad tracks, by scanning the contour, the detected values being converted into analog measurement signals .
Der Schienenverkehr hat in den letzten Jahren stark an Bedeutung gewonnen. Dazu haben beispielsweise die ökologische Bewegung (Stichwort: "Rollende Landstraße) und, in Europa, die Entwicklung bzw. Öffnung der Oststaaten beigetragen. Der Schienenverkehr wird auch in Zukunft in Technik und Gesellschaft eine wichtige Rolle spielen.Rail transport has become increasingly important in recent years. The ecological movement (keyword: "Rolling Country Road) and, in Europe, the development or opening of the Eastern States have contributed to this. Rail transport will continue to play an important role in technology and society in the future.
Um den Schienenverkehr im vorgegebenen Umfang reibungslos abwickeln zu können, ist eine von mehreren Voraussetzungen natürlich die optimale Kontrolle der Eisenbahnschienen. Diese Kontrolle wurde in jüngster Zeit wichtiger denn je, weil immer mehr Bahnstrecken auf Hochgeschwindigkeitstauglichkeit umgestellt werden. Aufgrund dieser Gegebenheit ergibt sich die Forderung, die Kontrollen desIn order to be able to handle the rail traffic smoothly in the specified scope, one of several prerequisites is of course the optimal control of the railroad tracks. This control has recently become more important than ever because more and more railway lines are being converted to high-speed suitability. Because of this, there is a requirement that the controls of the
Abnützungsgrades der Eisenbahnschienen in kürzeren Zeitabständen als zuvor durchzuführen.Degree of wear of the railroad tracks to be carried out at shorter intervals than before.
Der bei Eisenbahnschienen für die Benützungstauglichkeit wichtigste, weil am stärksten beanspruchte, Teil ist der Schienenkopf. Eisenbahnschienen werden in bestimmten Zeitabständen, welche vor allem von der Frequenz und der Art des die jeweilige Bahnstrecke belastenden Verkehrs abhängen, geprüft und nachgemessen. Dabei wird selbstverständlich vor allem dem Schienenkopf größtes AugenmerkThe most important part of railroad tracks for usability, because they are the most heavily used, is the rail head. Railroad tracks are checked and remeasured at certain time intervals, which mainly depend on the frequency and the type of traffic on the respective railway line. Of course, the main focus is of course the rail head
ERSAΓZBLÄΓT (REGEL 26) gewidmet. Innerhalb genau definierter Toleranzen dürfen die Schienen weiter¬ verwendet werden. Übersteigt der Abnutzungsgrad den festgelegten Grenzwert, so müssen die Schienenköpfe durch Auftragung neuen Materials - hiezu stehen bereits bewährte Verfahren zur Verfügung - instandgesetzt werden oder die abgenutzte Eisenbahnschiene ist durch eine neue zu ersetzen.ERSAΓZBLÄΓT (RULE 26) dedicated. The rails may continue to be used within precisely defined tolerances. If the degree of wear exceeds the specified limit, the rail heads must be repaired by applying new material - there are already proven methods available - or the worn rail track must be replaced with a new one.
Zur Zeit werden die Eisenbahnschienen von dafür ausgebildetem Bahnpersonal durch Anlegen entsprechender Profilschablonen, manuelle Messung des Abnützungsgrades und anschließenden Vergleich mit einer der Nominalform der Schiene entsprechenden Schablone kontrolliert.The railroad tracks are currently checked by trained trainers by applying appropriate profile templates, manually measuring the degree of wear and then comparing them with a template corresponding to the nominal shape of the rail.
Diese Art der Kontrolle weist gravierende Schwachpunkte auf. Sie ist zeit- und kostenaufwendig, somit also unwirtschaftlich, vor allem jedoch ungenau. Zudem beinhaltet die manuelle Messung auch noch die Gefahr des sogenannten "menschlichen Versagens", also von Fehlmessungen.This type of control has serious weaknesses. It is time-consuming and costly, therefore uneconomical, but above all inaccurate. In addition, the manual measurement also includes the risk of so-called "human error", that is, incorrect measurements.
Aufgabe der Erfindung ist es daher, ein Verfahren und eine Einrichtung zu konzipieren, mit deren Hilfe der Abnützungsgrad von Eisenbahnschienen unter Hintanhaltung der erwähnten Nachteile feststellbar ist.The object of the invention is therefore to design a method and a device by means of which the degree of wear of railroad tracks can be determined while keeping the disadvantages mentioned.
Die Aufgabe wird durch die Erfindung gelöst. Diese ist dadurch gekennzeichnet, daß die Kontur des Schienenkopfes entlang einer Meßlinie, welche quer zur Längsrichtung der Eisenbahnschiene liegt, zyklisch abgetastet wird, und daß als Nominalpunkt der Messung jener Punkt definiert wird, welcher auf einer fiktiven, auf Höhe der Meßlinie senkrecht und mittig durch Schienenkopf, Schienensteg und Schienenfuß gelegten Linie liegt, wobei der Nominalpunkt mathematisch, oder empirisch über eine Referenzschiene, ermittelt wird, und daß die Meßsignale mathematisch ausgewertet und mit einer Nominalform des zu prüfenden Schienenkopfes verglichen werden.The object is achieved by the invention. This is characterized in that the contour of the rail head is cyclically scanned along a measuring line which lies transversely to the longitudinal direction of the railroad track, and that the nominal point of the measurement is defined as the point which is perpendicular and centered on a fictitious, at the level of the measuring line Rail head, rail web and rail foot line, the nominal point is determined mathematically, or empirically via a reference rail, and that the measurement signals are evaluated mathematically and compared with a nominal shape of the rail head to be tested.
Mit der Erfindung ist es erstmals möglich, eine präzise Messung der Kontur von Eisenbahnschienen durchzuführen. Das erfindungsgemäße Verfahren ist selbst¬ verständlich nicht nur auf Bahnstrecken, sondern auch bei der Herstellung von Eisen¬ bahnschienen, aber auch von Profilteilen anderer Art, anwendbar. In einer Ausgestaltung der Erfindung werden induktive oder kapazitive oder inkrementale oder optische bzw. akustooptische bzw. elektrooptische bzw. foto¬ elektrische Abtastprinzipien angewandt werden.With the invention it is possible for the first time to carry out a precise measurement of the contour of railroad tracks. The method according to the invention can of course not only be used on railroad tracks, but also in the production of railroad tracks, but also of other types of profile parts. In one embodiment of the invention, inductive or capacitive or incremental or optical or acousto-optical or electro-optical or photo-electrical scanning principles are used.
Diese Ausgestaltung erlaubt es, global gesehen, für die Kontrolle von Profilteilen stets jenes Abtastprinzip einzusetzen, welches in bezug auf das jeweils verwendete Material optimale Ergebnisse liefert.From a global point of view, this configuration always allows that scanning principle to be used for the control of profile parts, which delivers optimum results with regard to the material used in each case.
Im Rahmen der Erfindung ist eine Einrichtung zur Durchführung des Verfahrens vorgesehen, welche dadurch gekennzeichnet ist, daß eine aus Grundmodul und Sensor bestehende Abtasteinheit auf einem Gleitelement angeordnet ist, welches in einem den Schienenkopf in Abstand quer zur Längsrichtung der Eisenbahnschiene umschließenden, in seiner Grundform hufeisenförmig ausgebildeten, Halteriπg angeordnet und entlang dieses Halteringes von dessen einer bis zu dessen anderen Stirnseite bewegbar ist, wobei die Stirnseiten als Anschlagflächen für das Gleitelement ausgebildet sind, und daß der Sensor, in bezug auf seine Längsrichtung, eine federnde Lagerung aufweist.In the context of the invention, a device for carrying out the method is provided, which is characterized in that a scanning unit consisting of a basic module and sensor is arranged on a sliding element which is horseshoe-shaped in its basic form in a rail frame enclosing the rail head at a distance transversely to the longitudinal direction of the railway rail trained, arranged Halteriπg and along this retaining ring from one to the other end face is movable, the end faces are designed as stop surfaces for the sliding element, and that the sensor, with respect to its longitudinal direction, has a resilient mounting.
Mit dieser Einrichtung ist das erfindungsgemäße Verfahren auf zweckmäßige Weise in der Praxis anwendbar.With this device, the method according to the invention is expediently applicable in practice.
In einer Weiterbildung der Erfindung ist vorgesehen, daß der Haltering an seinen Stirnseiten mit jeweils dem festen Teil eines von zwei zweiteiligen Klappelementen starr verbunden ist, und daß deren beweglicher Teil mit seinem freien Ende an der Eisenbahnschiene in deren Übergangsbereich von Schienensteg und Schienenflanke einrastbar ist.In a further development of the invention it is provided that the retaining ring is rigidly connected at its end faces to the fixed part of one of two two-part folding elements, and that its movable part can be latched with its free end on the railroad rail in its transition region from the rail web and rail flank.
Damit wird nicht nur eine sehr rasche Fixierung der erfindungsgemäßen Einrichtung auf den Eisenbahnschienen ermöglicht, sondern auch sichergestellt, daß der Haltering am Schienenhals aufsitzt. Diese Vorteile sind beim Einsatz der Erfindung auf stark frequentierten Bahnstrecken wichtig, wenn also für die Messung nur eine geringe Zeitspanne zur Verfügung steht.This not only enables a very quick fixation of the device according to the invention on the railroad tracks, but also ensures that the retaining ring is seated on the rail neck. These advantages are strong when using the invention frequented railway lines are important, if there is only a small amount of time available for the measurement.
Anhand eines Ausführungsbeispieles soll die Erfindung näher erläutert werden. Dabei zeigt Fig. 1, in Form einer Prinzipskizze, den Zusammenhang zwischen dem mechanischen und dem elektrotechnischen Teil der Erfindung. In Fig. 2 ist der Befestigungsteil der Erfindung dargestellt.The invention will be explained in more detail using an exemplary embodiment. 1 shows, in the form of a schematic diagram, the relationship between the mechanical and the electrotechnical part of the invention. In Fig. 2 the fastening part of the invention is shown.
Wie aus Fig. 1 ersichtlich, ist der Schienenkopf 5 einer Eisenbahnschiene 1 in Abstand und quer zur Längsrichtung der Eisenbahnschiene 1 von einem in seiner Grundform hufeisenförmig ausgebildeten Haltering 6 umschlossen. Auf diesem Haltering 6 ist ein Gleitelement 7 angeordnet, auf welchem eine aus Grundmodul 18 und Sensor 9 bestehende Abtasteinheit 8 aufsitzt. Die Abtasteinheit 8 ist entlang des Halteringes 6 von dessen einen bis zur dessen anderen Stirnseite bewegbar, wobei diese Stirnseiten als Anschlagflächen ausgebildet sind. Der Nominalpunkt 16 für die Messung liegt auf einer fiktiven, auf Höhe der Meßlinie senkrecht und mittig durch Schienenkopf 5, Schienensteg 2 und Schienenkopf 5 geführten Linie 14. Der Nominalpunkt 16 wird mathematisch, oder empirisch über eine Referenzschiene, ermittelt. Die Meßsignale werden mathematisch ausgewertet und mit einer Nominalform des zu prüfenden Schienenkopfes 5 verglichen.As can be seen from FIG. 1, the rail head 5 of a railroad rail 1 is enclosed at a distance and transversely to the longitudinal direction of the railroad rail 1 by a retaining ring 6 which is horseshoe-shaped in its basic form. A sliding element 7 is arranged on this retaining ring 6, on which a scanning unit 8 consisting of the basic module 18 and sensor 9 is seated. The scanning unit 8 can be moved along the retaining ring 6 from one end face to the other end face, these end faces being designed as stop faces. The nominal point 16 for the measurement lies on a fictitious line 14, which runs vertically and centrally at the level of the measuring line through the rail head 5, rail web 2 and rail head 5. The nominal point 16 is determined mathematically or empirically via a reference rail. The measurement signals are evaluated mathematically and compared with a nominal shape of the rail head 5 to be tested.
Im vorliegenden Beispiel sei angenommen, daß für die Messung induktive Abtastprinzipien angewandt werden. Die vorerst analogen Meßsignale werden von der Abtasteinheit 8 über eine Meßleitung 10 einem Verstärker 11 zugeführt. Die verstärkten analogen Meßsignale werden sodann in einem Analog/Digitalwandler 12 in digitale Signale umgewandelt und einem Rechner 13 zur weiteren Bearbeitung zugeleitet. Im Rechner 13 werden die Meßsignale in einer Datenbank systemtechnisch erfaßt und, dem jeweiligen Schienentypus zugeordnet, gespeichert. Die Meßdaten sind numerisch und grafisch in ihrem Bezug zu definierten Grenzwerten dargestellt; dabei erfolgt die mathematische Auswertung der Meßwerte im Vergleich mit einer Nominal¬ form des zu prüfenden Schienenkopfes 5.In the present example it is assumed that inductive scanning principles are used for the measurement. The initially analog measuring signals are fed from the scanning unit 8 to an amplifier 11 via a measuring line 10. The amplified analog measurement signals are then converted into digital signals in an analog / digital converter 12 and sent to a computer 13 for further processing. In the computer 13, the measurement signals are recorded in a database in terms of system technology and stored, assigned to the respective rail type. The measurement data are shown numerically and graphically in relation to defined limit values; there the measured values are evaluated mathematically in comparison with a nominal form of the rail head 5 to be tested.
Die Induktivität der Spulen bzw. deren Kopplungen von induktiven Sensoren 9 wird bzw. werden durch bestimmte physikalische Einflüsse - im vorliegenden Fall durch die Materialstärke der Eisenbahnschiene zwischen Nominalpunkt und Sensorkopf - entlang der Meßlinie, verändert. Die Meßlinie reicht von der Schienenflanke der einen bis zur Schienenflanke der gegenüberliegenden Seite der Eisenbahnschiene 1. Die Abtastung wird so durchgeführt, daß die mathematische Erfassung der abgetasteten Meßpunkte mittels des Rechners 13 unter Verwendung des Prinzips des Polar¬ koordinatensystems erfolgen kann.The inductance of the coils or their couplings by inductive sensors 9 is or are changed by certain physical influences - in the present case by the material thickness of the railroad track between the nominal point and the sensor head - along the measuring line. The measuring line extends from the rail flank of one to the rail flank of the opposite side of the railroad rail 1. The scanning is carried out in such a way that the mathematical detection of the scanned measuring points can be carried out by means of the computer 13 using the principle of the polar coordinate system.
Zur Erzielung eines hinreichend genauen Meßergebnisses genügt es, entlang der Meßlinie beispielsweise in Abständen von jeweils 2 ° zu messen, wodurch sich zirka 100 Meßpunkte ergeben. Bei dieser Messung ist konkret der Winkel, er sei hier "Ä" benannt, zwischen einer vom Übergangsbereich 4 bis zum Nominalpunkt 16 reichenden fiktiven Nullinie, deren Länge bekannt ist, und einer fiktiven Geraden, welche eine durch den Nominalpunkt gelegte, verlängerte Symmetrieachse des Sensors 9 ist. Jener Teil dieser verlängerten Symmetrieachse, welcher vom Nominal¬ punkt 16 bis zum jeweiligen Meßpunkt auf der Meßlinie der Eisenbahnschiene 1 reicht, sei als r bezeichnet, r errechnet sich sodann, lt. dem Prinzip des Polar¬ koordinatensystems, als Quotient aus dem Dividenden "Länge der Nullinie" und dem Divisor "cos Ä". Die Weiterführung des Abtastelementes um die erwähnten jeweils 2 ° erfolgt unter Zuhilfenahme eines Winkelgebers.To achieve a sufficiently precise measurement result, it is sufficient to measure along the measurement line, for example at intervals of 2 °, which results in approximately 100 measurement points. In this measurement, the angle is concrete, let it be called "A", between a fictitious zero line, the length of which is known, from the transition region 4 to the nominal point 16, and a fictitious straight line, which is an elongated axis of symmetry of the sensor through the nominal point 9 is. That part of this extended axis of symmetry, which extends from the nominal point 16 to the respective measuring point on the measuring line of the railroad track 1, is designated as r, r is then calculated according to the principle of the polar coordinate system as a quotient from the dividend "length" the zero line "and the divisor" cos Ä ". The scanning element is continued by the aforementioned 2 ° with the aid of an angle encoder.
Um größtmögliche Sicherheit der Geleise zu gewährleisten, sollte das Profil der üblicherweise 120 Meter langen Eisenbahnschienen in Längsrichtung in Abständen von jeweils etwa 5 Metern gemessen werden.To ensure the greatest possible safety of the tracks, the profile of the usually 120 meter long railroad tracks should be measured in the longitudinal direction at intervals of about 5 meters each.
In Fig. 2 ist eine Hälfte des Halteringes 6 mit einem an dessen einer Stirnseite angebrachtem festen Teil 22 eines zweiteiligen Klappelementes 21 im eingerasteten Zustand ersichtlich. Ein beweglicher Teil 23 liegt mit seinem schienennahen Ende im Übergangsbereich 4 zwischen Schienenflanke 3 und Schienensteg 2 der Eisenbahn¬ schiene 1 formschlüssig an.2 shows a half of the retaining ring 6 with a fixed part 22 of a two-part folding element 21 attached to one end face thereof in the engaged state. A movable part 23 lies with its end near the rail Transitional area 4 between the rail flank 3 and the rail web 2 of the railway rail 1 in a form-fitting manner.
Um die Meßeinrichtung von der Eisenbahnschiene 1 abzuheben, braucht lediglich der bewegliche Teil 23 des Klappelementes 21 entgegen dem Uhrzeigersinn angehoben werden. Auf diese Weise gleitet das schienennahe Ende des beweglichen Teiles 23 aus dem Übergangsbereich 4 über die Schienenflanke 3 in eine freie Stellung. Selbst¬ verständlich kann durch geringfügige konstruktive Modifizierung der beschriebenen Ausführung das Klappelement 21 so ausgeführt werden, daß das Entfernen der Meß- Vorrichtung durch Abheben des beweglichen Teiles 23 im Uhrzeigersinn vorgenommen werden kann.To lift the measuring device from the railroad track 1, only the movable part 23 of the folding element 21 needs to be raised counterclockwise. In this way, the near-rail end of the movable part 23 slides out of the transition area 4 over the rail flank 3 into a free position. Of course, by slightly modifying the described embodiment, the folding element 21 can be designed in such a way that the measuring device can be removed by lifting the movable part 23 in a clockwise direction.
Auf diese Weise ist das Aufsetzen und Abheben der erfindungsgemäßen Einrichtung rasch und präzise durchführbar. In this way, the installation and removal of the device according to the invention can be carried out quickly and precisely.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Verfahren zum Vermessen der Form bzw. der Formabweichung der Kontur von metallischen und nichtmetallischen Profilteilen, insbesondere der Kontur des1. Method for measuring the shape or the shape deviation of the contour of metallic and non-metallic profile parts, in particular the contour of the
Schienenkopfes (5) von Eisenbahnschienen (1), durch Abtastung der Kontur, wobei die erfaßten Werte in analoge Meßsignale umgesetzt werden, dadurch gekennzeichnet, daß die Kontur des Schienenkopfes (5) entlang einer Meßlinie, welche quer zur Längsrichtung der Eisenbahnschiene (1) liegt, zyklisch abgetastet wird, und daß als Nominalpunkt (16) der Messung jener Punkt definiert wird, welcher auf einer fiktiven, auf Höhe der Meßlinie senkrecht und mittig durch Schienenkopf (5), Schienensteg (2) und Schienenfuß (17) gelegten Linie (14) liegt, wobei der Nominalpunkt (16) mathematisch, oder empirisch über eine Referenz¬ schiene, ermittelt wird, und daß die Meßsignale mathematisch ausgewertet und mit einer Nominalform des zu prüfenden Schienenkopfes (5) verglichen werden.Rail head (5) of rail tracks (1), by scanning the contour, the detected values being converted into analog measurement signals, characterized in that the contour of the rail head (5) is along a measuring line which is transverse to the longitudinal direction of the rail rail (1) , is scanned cyclically, and that the nominal point (16) of the measurement is defined as the point which lies on a fictitious line (14th) which is vertically and centrally at the level of the measuring line by rail head (5), rail web (2) and rail foot (17) ), whereby the nominal point (16) is determined mathematically or empirically via a reference rail, and that the measurement signals are evaluated mathematically and compared with a nominal shape of the rail head (5) to be tested.
(Fig. 1(Fig. 1
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß induktive oder kapazitive oder inkrementale oder optische bzw. akustooptische bzw. elektrooptische bzw. fotoelektrische Abtastprinzipien angewandt werden.2. The method according to claim 1, characterized in that inductive or capacitive or incremental or optical or acousto-optical or electro-optical or photoelectric scanning principles are applied.
3. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine aus Grundmodul (18) und Sensor (9) bestehende Abtasteinheit (8) auf einem Gleitelement (7) angeordnet ist, welches in einem den Schienenkopf (5) in Abstand quer zur Längsrichtung der Eisenbahnschiene ( 1 ) umschließenden, in seiner Grundform hufeisenförmig ausgebildeten, Haltering (6) angeordnet und entlang dieses Halteringes (6) von dessen einer bis zu dessen anderen Stirnseite bewegbar ist, wobei die Stirnseiten als Anschlagflächen für das Gleitelement (7) ausgebildet sind, und daß der Sensor (9), in bezug auf seine Längsrichtung, eine federnde Lagerung aufweist.3. Device for carrying out the method according to claim 1 or 2, characterized in that a scanning unit (8) consisting of a basic module (18) and sensor (9) is arranged on a sliding element (7) which is in a the rail head (5) at a distance transversely to the longitudinal direction of the rail (1) enclosing, in its basic form horseshoe-shaped, retaining ring (6) arranged and along this retaining ring (6) from one to the other end face is movable, the end faces as stop surfaces for the sliding element ( 7) are formed, and that the sensor (9), in relation to its longitudinal direction, has a resilient mounting.
(Fig. 1) (Fig. 1)
4. Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Haltering (6) an seinen Stirnseiten mit jeweils dem festen Teil (22) eines von zwei zweiteiligen Klappelementen (21) starr verbunden ist, und daß deren beweglicher Teil (23) mit seinem freien Ende an der Eisenbahnschiene (1) in deren Übergangsbereich (4) von Schienensteg (2) und Schienenflanke (3) einrastbar ist.4. Device according to claim 3, characterized in that the retaining ring (6) on its end faces with the fixed part (22) of one of two two-part folding elements (21) is rigidly connected, and that the movable part (23) with its free End on the railroad rail (1) in the transition area (4) of rail web (2) and rail flank (3) can be snapped.
(Fig. 2) (Fig. 2)
PCT/AT1995/000085 1994-05-06 1995-05-04 Track rail contour measurement process WO1995030878A1 (en)

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ATA950/94 1994-05-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107585178A (en) * 2017-08-11 2018-01-16 中铁物轨道科技服务集团有限公司 Stock side wear rail ripple grinds measuring instrument in a kind of railway curve
US20230084963A1 (en) * 2020-04-09 2023-03-16 Hatch Ltd. Device, system and method for detecting leakage current for traction power system

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Publication number Priority date Publication date Assignee Title
FR2436366A1 (en) * 1978-09-14 1980-04-11 Fourcade Jean Railway line irregularity measurement device - uses mechanical coupling system to amplify displacements and produce direct chart
EP0044885A1 (en) * 1980-07-24 1982-02-03 Speno International S.A. Method and apparatus for determining at least one geometrical characteristic of the rail heads of a railway track
JPS60165502A (en) * 1984-02-08 1985-08-28 Japanese National Railways<Jnr> Measuring instrument for rail tread surface
WO1986001886A1 (en) * 1984-09-21 1986-03-27 Acet Limited Railhead profile measuring apparatus
EP0548377A1 (en) * 1991-09-11 1993-06-30 BA-BE-D GmbH Measuring instrument for surveying railway lines

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Publication number Priority date Publication date Assignee Title
FR2436366A1 (en) * 1978-09-14 1980-04-11 Fourcade Jean Railway line irregularity measurement device - uses mechanical coupling system to amplify displacements and produce direct chart
EP0044885A1 (en) * 1980-07-24 1982-02-03 Speno International S.A. Method and apparatus for determining at least one geometrical characteristic of the rail heads of a railway track
JPS60165502A (en) * 1984-02-08 1985-08-28 Japanese National Railways<Jnr> Measuring instrument for rail tread surface
WO1986001886A1 (en) * 1984-09-21 1986-03-27 Acet Limited Railhead profile measuring apparatus
EP0548377A1 (en) * 1991-09-11 1993-06-30 BA-BE-D GmbH Measuring instrument for surveying railway lines

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107585178A (en) * 2017-08-11 2018-01-16 中铁物轨道科技服务集团有限公司 Stock side wear rail ripple grinds measuring instrument in a kind of railway curve
CN107585178B (en) * 2017-08-11 2019-02-22 中铁物轨道科技服务集团有限公司 Stock side wear rail wave grinds measuring instrument in a kind of railway curve
US20230084963A1 (en) * 2020-04-09 2023-03-16 Hatch Ltd. Device, system and method for detecting leakage current for traction power system

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