EP1283301B1 - Machine and method for recognizing the sleeper positions in a track - Google Patents

Machine and method for recognizing the sleeper positions in a track Download PDF

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Publication number
EP1283301B1
EP1283301B1 EP02450149A EP02450149A EP1283301B1 EP 1283301 B1 EP1283301 B1 EP 1283301B1 EP 02450149 A EP02450149 A EP 02450149A EP 02450149 A EP02450149 A EP 02450149A EP 1283301 B1 EP1283301 B1 EP 1283301B1
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EP
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Prior art keywords
sleeper
machine
track
distance
detection section
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EP02450149A
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German (de)
French (fr)
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EP1283301A2 (en
EP1283301A3 (en
Inventor
Josef Theurer
Bernhard Dr. Lichtberger
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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Priority to AT02450149T priority Critical patent/ATE333536T1/en
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Publication of EP1283301A3 publication Critical patent/EP1283301A3/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B35/00—Applications of measuring apparatus or devices for track-building purposes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
    • E01B27/13—Packing sleepers, with or without concurrent work on the track
    • E01B27/16—Sleeper-tamping machines

Definitions

  • the invention relates to a machine with a cyclically usable working device for processing a track having rails and tracks and with a non-contact scanning device for detecting a threshold position in conjunction with a path measuring unit for detecting a path traveled by the machine on the track and with a control unit for centering the Operating device in response to the sensed threshold position and a method for non-contact scanning of thresholds.
  • an electron-optical control device in the form of a television camera, by which the operator can make an individual adjustment of the tamping unit to the position of the thresholds.
  • US 5,671,679A discloses the use of various types of sensors for non-contact sensing of the location of a threshold plate or similar target.
  • JP 322707/94 A it is also known to determine the difference between the threshold and ballast surface on the basis of an image processing device formed by a light slot and a camera and to control the lowering of tamping units of a tamping machine accordingly.
  • the object of the present invention is now to provide a generic machine and a method by which or the improved detection of a threshold position is guaranteed.
  • this object is achieved with a machine of the generic type, characterized in that the scanning device is designed as a distance meter for non-contact detection of vertical Distanzmeß exchange between the scanning on the one hand and sleepers or gravel of the track on the other hand, and that connected to the distance meter control unit for a continuous and successive subdivision of the path-dependent measuring path is formed in each case in a threshold detection section X comprising only slightly different distance measured values and an adjoining ballast detection section Y characterized by a sequence of abruptly changed distance measuring values.
  • a machine 1 illustrated in FIG. 1 has a machine frame 3 supported on rail carriages 2 and can be moved by a travel drive 4 on a track 7 formed from sleepers 5 and rails 6.
  • a cyclically usable working device 8 is arranged in the form of a tamping unit 9. This is a track lifting unit 10 and a reference system 11 assigned.
  • a working direction shown by an arrow 12 in front of the working device 8 are located in the cross machine direction two opposing scanning 13 for detecting the threshold position in the track. 7
  • a travelable on the rail 6 Wegmeßtechnik 14 is provided. This is just like the scanner 13 with a control unit 15 in connection.
  • the scanning device 13 is designed as a distance meter 16 for a non-contact measurement of the vertical distance to the underlying threshold 5 or to gravel 17.
  • a measured curve 18 detected as a function of the distance s traveled by the machine 1 is composed of a plurality of distance measured values d.
  • the measuring curve 18 is composed in an alternating sequence of a threshold detection section X having only slightly different distance measured values d and a ballast detection section Y which is composed of a large number of distantly measured distance values d.
  • the beginning and the end of the threshold detection section X can be detected relatively easily by assigning a jump A or B, respectively.
  • a centering point Z x is determined for the time-shifted centering of the tamping unit 9 above the corresponding threshold 5.
  • the distance measured values d lying within the two discontinuities A, B are within a minimum bandwidth m with their respective maximum values.
  • the distance measuring values d defining the ballast detection section Y, with their maximum values, are clearly outside the minimum bandwidth m.
  • two distancers 16 spaced apart in the cross-machine direction are provided in order to scan the threshold position along two lines of measurement 21 running in the longitudinal direction of the track in the context of a work precedence of the machine 1.
  • the two following tamping units 9, not shown here can be centered independently of each other optimally above the respective threshold section for initiating the tamping process.
  • the path-dependent trace 18 formed of a plurality of distance readings is divided into successive threshold detection sections X and ballast detection sections Y, for example, those lying only within a minimum bandwidth m Distance measurements d are filtered out.
  • limit values for defining the minimum bandwidth m and a minimum and maximum width of thresholds 5 possibly occurring in the track 7 for defining a threshold acceptance range SA can be input.
  • a plausibility check of the previously determined threshold detection section X is carried out as to whether the threshold width defined by the two discontinuities A, B lies within the limit values stored in the input unit 22. If this check is negative, the activation of an audible and / or visual warning device 24 to alert an operator to the unclear situation occurs.
  • the centering point Z x is determined by halving the path distance between the discontinuities A, B, stored and sent away for an automatic foremost stop of the machine 1, in order finally to center the tamping units 9 above the respective threshold 5.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The machine has a contactless sensor device (13) for determining the position of the sleepers (5) in conjunction with a displacement measuring unit (14) determining the position of the machine along the track rail (7), with centering of the working tools in dependence on the sleeper positions. The sensor device has a distance sensor (16) providing vertical distance values between the sensor device and the sleepers and between the sensor device and the track ballast (17), coupled to a control unit (15) determining the sleeper width (X) and the intermediate ballast gap (Y). An Independent claim is also included for a railway track maintenance method.

Description

Die Erfindung betrifft eine Maschine mit einer zyklisch einsetzbaren Arbeitsvorrichtung zur Bearbeitung eines Schwellen und Schienen aufweisenden Gleises sowie mit einer berührungslos wirkenden Abtasteinrichtung zum Erkennen einer Schwellenlage in Verbindung mit einer Wegmesseinheit zur Erfassung eines von der Maschine am Gleis zurückgelegten Weges und mit einer Steuereinheit zur Zentrierung der Arbeitsvorrichtung in Abhängigkeit von der abgetasteten Schwellenlage sowie ein Verfahren zur berührungslosen Abtastung von Schwellen.The invention relates to a machine with a cyclically usable working device for processing a track having rails and tracks and with a non-contact scanning device for detecting a threshold position in conjunction with a path measuring unit for detecting a path traveled by the machine on the track and with a control unit for centering the Operating device in response to the sensed threshold position and a method for non-contact scanning of thresholds.

Durch US 3 762 333A ist bereits eine derartige Maschine bekannt, die als Gleisstopfmaschine mit einem Stopfaggregat als Arbeitsvorrichtung ausgebildet ist. In Arbeitsrichtung vor dieser ist am Maschinenrahmen im Bereich der Schienenbefestigungsmittel eine als Pulsor ausgebildete Abtasteinrichtung angeordnet, die auf die Nähe eines metallischen Objektes, z.B. einer Schienenschraube, anspricht und ein entsprechendes Signal abgibt. Anhand einer Wegmeßeinrichtung wird der von der Maschine zurückgelegte Weg registriert. Die Maschine wird in weiterer Folge unter Berücksichtigung des bekannten Abstandes zwischen Pulsor und Stopfaggregat durch eine Steuereinrichtung derart gestoppt, daß das Stopfaggregat genau über einer Schwelle zu deren Unterstopfung zentriert ist.By US 3,762,333A such a machine is already known, which is designed as a track tamping machine with a tamping unit as a working device. In the working direction in front of this, on the machine frame, in the region of the rail fastening means, a scanner designed as a pulsor is arranged, which is sensitive to the proximity of a metallic object, e.g. a rail screw, responds and emits a corresponding signal. By means of a distance measuring device, the distance traveled by the machine is registered. The machine is subsequently stopped, taking into account the known distance between Pulsor and Stopfaggregat by a control device such that the Stopfaggregat is centered just above a threshold to their Unterstopfung.

Bei einer weiteren, gemäß AT 321 347B bekannten Maschine ist ein elektronenoptisches Kontrollorgan in Form einer Fernsehkamera vorgesehen, anhand derer die Bedienungsperson eine individuelle Einstellung des Stopfaggregates auf die Lage der Schwellen vornehmen kann.In another known from AT 321 347B machine an electron-optical control device is provided in the form of a television camera, by which the operator can make an individual adjustment of the tamping unit to the position of the thresholds.

Durch US 5 671 679A ist die Verwendung von verschiedenen Arten von Sensoren geoffenbart, mit denen die Lage einer Schwellenplatte oder eines ähnlichen Zielobjektes berührungslos erfaßt werden kann.US 5,671,679A discloses the use of various types of sensors for non-contact sensing of the location of a threshold plate or similar target.

Gemäß JP 322707/94 A ist es auch bekannt, anhand einer aus einem Lichtschlitz und einer Kamera gebildeten Bildverarbeitungseinrichtung den Unterschied zwischen Schwellen- und Schotteroberfläche festzustellen und das Absenken von Stopfaggregaten einer Gleisstopfmaschine entsprechend zu steuern.According to JP 322707/94 A, it is also known to determine the difference between the threshold and ballast surface on the basis of an image processing device formed by a light slot and a camera and to control the lowering of tamping units of a tamping machine accordingly.

Die Aufgabe der vorliegenden Erfindung besteht nun in der Schaffung einer gattungsgemäßen Maschine sowie eines Verfahrens, mit der bzw. dem eine verbesserte Erkennung einer Schwellenlage gewährleistet ist.The object of the present invention is now to provide a generic machine and a method by which or the improved detection of a threshold position is guaranteed.

Gemäß der Erfindung wird diese Aufgabe mit einer Maschine der gattungsgemäßen Art dadurch gelöst, daß die Abtasteinrichtung als Distanzmesser zur berührungslosen Erfassung von vertikalen Distanzmeßwerten zwischen Abtasteinrichtung einerseits und Schwellen bzw. Schotter des Gleises andererseits ausgebildet ist, und daß die mit dem Distanzmesser verbundene Steuereinheit für eine fortlaufende und aufeinanderfolgende Unterteilung der wegabhängigen Meßstrecke jeweils in einen lediglich geringfügig voneinander abweichende Distanzmeßwerte umfassenden Schwellenerkennungsabschnitt X und einen daran anschließenden, durch eine Folge von sprunghaft veränderten Distanzmeßwerten gekennzeichneten Schottererkennungsabschnitt Y ausgebildet ist.According to the invention, this object is achieved with a machine of the generic type, characterized in that the scanning device is designed as a distance meter for non-contact detection of vertical Distanzmeßwerten between the scanning on the one hand and sleepers or gravel of the track on the other hand, and that connected to the distance meter control unit for a continuous and successive subdivision of the path-dependent measuring path is formed in each case in a threshold detection section X comprising only slightly different distance measured values and an adjoining ballast detection section Y characterized by a sequence of abruptly changed distance measuring values.

Durch diese erfindungsgemäße Lösung ist es möglich, die Schwellenlage zuverlässig und vorallem unabhängig von der Schwellenart zu erkennen, so daß auch ältere Gleise mit einer Vielzahl von verschiedenen Schwellenarten bzw. Schienenbefestigungsarten problemlos abtastbar sind. Durch Anordnung zweier in Maschinenquerrichtung voneinander distanzierter Abtasteinrichtungen besteht auch in vorteilhafter Weise die Möglichkeit, eine Schräglage von Schwellen zu erkennen.By this solution according to the invention, it is possible to detect the threshold position reliably and especially independent of the Schwellenart, so that even older tracks with a variety of different types of sleep or rail fastening types are easily scanned. By arranging two scanning devices which are distanced from one another in the cross machine direction There is also the possibility advantageously to detect a skew of sleepers.

Weitere vorteilhafte Ausbildungen der Erfindung ergeben sich aus den Unteransprüchen und den Zeichnungen.Further advantageous embodiments of the invention will become apparent from the dependent claims and the drawings.

Im folgenden wird die Erfindung an Hand eines in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben.In the following the invention will be described with reference to an embodiment shown in the drawing.

Es zeigen:

  • Fig.1 eine vereinfachte Seitenansicht einer Maschine mit einer zyklisch einsetzbaren Arbeitsvorrichtung zur Bearbeitung eines Gleises,
  • Fig.2 eine schematische Darstellung einer Abtasteinrichtung mit einer Meßkurve,
  • Fig.3 eine schematisierte Darstellung eines Gleises mit zwei Abtasteinrichtungen sowie entsprechenden Meßkurven, und
  • Fig.4 eine schematisierte Darstellung von Teilen der Maschine.
Show it:
  • 1 shows a simplified side view of a machine with a cyclically usable working device for processing a track,
  • 2 shows a schematic representation of a scanning device with a measuring curve,
  • A schematic representation of a track with two scanning devices and corresponding traces, and
  • 4 shows a schematic representation of parts of the machine.

Eine in Fig.1 dargestellte Maschine 1 weist einen auf Schienenfahrwerken 2 abgestützten Maschinenrahmen 3 auf und ist durch einen Fahrantrieb 4 auf einem aus Schwellen 5 und Schienen 6 gebildeten Gleis 7 verfahrbar. Zwischen den Schienenfahrwerken 2 ist eine zyklisch einsetzbare Arbeitsvorrichtung 8 in Form eines Stopfaggregates 9 angeordnet. Diesem ist ein Gleishebeaggregat 10 sowie ein Bezugsystem 11 zugeordnet. In einer durch einen Pfeil 12 dargestellten Arbeitsrichtung vor der Arbeitsvorrichtung 8 befinden sich zwei in Maschinenquerrichtung einander gegenüberliegende Abtasteinrichtungen 13 zur Erkennung der Schwellenlage im Gleis 7.A machine 1 illustrated in FIG. 1 has a machine frame 3 supported on rail carriages 2 and can be moved by a travel drive 4 on a track 7 formed from sleepers 5 and rails 6. Between the rail chassis 2, a cyclically usable working device 8 is arranged in the form of a tamping unit 9. This is a track lifting unit 10 and a reference system 11 assigned. In a working direction shown by an arrow 12 in front of the working device 8 are located in the cross machine direction two opposing scanning 13 for detecting the threshold position in the track. 7

Für die Messung des von der Maschine 1 am Gleis 7 zurückgelegten Weges ist eine auf der Schiene 6 abrollbare Wegmeßeinheit 14 vorgesehen. Diese steht ebenso wie die Abtasteinrichtung 13 mit einer Steuereinheit 15 in Verbindung.For measuring the distance traveled by the machine 1 on the track 7, a travelable on the rail 6 Wegmeßeinheit 14 is provided. This is just like the scanner 13 with a control unit 15 in connection.

Wie insbesondere aus Fig.2 ersichtlich, ist die Abtasteinrichtung 13 als Distanzmesser 16 für eine berührungslose Messung des vertikalen Abstandes zu der darunterliegenden Schwelle 5 bzw. zu Schotter 17 ausgebildet. Eine in Abhängigkeit des von der Maschine 1 zurückgelegten Weges s erfaßte Meßkurve 18 setzt sich aus einer Vielzahl von Distanzmeßwerten d zusammen.As can be seen in particular from FIG. 2, the scanning device 13 is designed as a distance meter 16 for a non-contact measurement of the vertical distance to the underlying threshold 5 or to gravel 17. A measured curve 18 detected as a function of the distance s traveled by the machine 1 is composed of a plurality of distance measured values d.

Die Meßkurve 18 besteht in abwechselnder Folge aus einem lediglich geringfügig voneinander abweichende Distanzmeßwerte d aufweisenden Schwellenerkennungsabschnitt X und einem Schottererkennungsabschnitt Y zusammen, der sich aus einer Vielzahl von sprunghaft zueinander verändernden Distanzmeßwerten d zusammensetzt. Beginn und Ende des Schwellenerkennungsabschnittes X können relativ einfach unter Zuordnung einer Sprungstelle A bzw. B erkannt werden. Durch Halbierung des Schwellenerkennungsabschnittes X wird ein Zentrierpunkt Zx für die zeitversetzte Zentrierung des Stopfaggregates 9 oberhalb der entsprechenden Schwelle 5 ermittelt.The measuring curve 18 is composed in an alternating sequence of a threshold detection section X having only slightly different distance measured values d and a ballast detection section Y which is composed of a large number of distantly measured distance values d. The beginning and the end of the threshold detection section X can be detected relatively easily by assigning a jump A or B, respectively. By halving the threshold detection section X, a centering point Z x is determined for the time-shifted centering of the tamping unit 9 above the corresponding threshold 5.

Die innerhalb der beiden Sprungstellen A,B liegenden Distanzmeßwerte d befinden sich mit ihren jeweiligen Maximalwerten innerhalb einer Minimalbandbreite m. Die den Schottererkennungsabschnitt Y definierenden Distanzmeßwerte d liegen mit ihren Maximalwerten deutlich außerhalb der Minimalbandbreite m.The distance measured values d lying within the two discontinuities A, B are within a minimum bandwidth m with their respective maximum values. The distance measuring values d defining the ballast detection section Y, with their maximum values, are clearly outside the minimum bandwidth m.

Wie in Fig.3 ersichtlich, sind zwei in Maschinenquerrichtung voneinander distanzierte Distanzmesser 16 vorgesehen, um im Rahmen einer Arbeitsvorfahrt der Maschine 1 entlang zweier in Gleislängsrichtung verlaufender Meßlinien 21 die Schwellenlage abzutasten. Damit besteht die Möglichkeit, zwei voneinander unabhängige Meßkurven 18 zu bilden, aus denen schließlich z.B. infolge einer wegversetzten Sprungstelle A eine Schräglage SL einer Schwelle 5 erkennbar ist. Damit können die beiden nachfolgenden, hier nicht näher dargestellten Stopfaggregate 9 unabhängig voneinander jeweils optimal über dem jeweiligen Schwellenabschnitt zur Einleitung des Stopfvorganges zentriert werden.As can be seen in Figure 3, two distancers 16 spaced apart in the cross-machine direction are provided in order to scan the threshold position along two lines of measurement 21 running in the longitudinal direction of the track in the context of a work precedence of the machine 1. This gives the possibility of two from each other to form independent traces 18 from which finally, for example, as a result of a staggered discontinuity A, a skew SL a threshold 5 can be seen. Thus, the two following tamping units 9, not shown here, can be centered independently of each other optimally above the respective threshold section for initiating the tamping process.

Wie in Fig. 4 schematisch dargestellt, wird in der Steuereinheit 15 unter Registrierung von Sprungstellen A, B die aus einer Vielzahl von Distanzmeßwerten gebildete, wegabhängige Meßkurve 18 in abwechselnd aufeinanderfolgende Schwellenerkennungsabschnitte X und Schottererkennungsabschnitte Y unterteilt, indem beispielsweise die lediglich innerhalb einer Minimalbandbreite m liegenden Distanzmeßwerte d herausgefiltert werden.As schematically illustrated in FIG. 4, in the control unit 15 registering jump points A, B, the path-dependent trace 18 formed of a plurality of distance readings is divided into successive threshold detection sections X and ballast detection sections Y, for example, those lying only within a minimum bandwidth m Distance measurements d are filtered out.

In einer Eingabeeinheit 22 können Grenzwerte zur Definition der Minimalbandbreite m sowie eine Minimal- und Maximalbreite von im Gleis 7 möglicherweise vorkommenden Schwellen 5 zur Definition eines Schwellenakzeptanzbereiches SA eingegeben werden. In einer Prüfeinheit 23 erfolgt eine Plausibilitätsprüfung des zuvor ermittelten Schwellenerkennungsabschnittes X, ob die durch die beiden Sprungstellen A,B definierte Schwellenbreite innerhalb der in der Eingabeeinheit 22 gespeicherten Grenzwerte liegt. Falls diese Prüfung negativ ist, erfolgt die Aktivierung einer akustischen und/oder optischen Warneinrichtung 24, um eine Bedienungsperson auf die unklare Situation aufmerksam zu machen.In an input unit 22, limit values for defining the minimum bandwidth m and a minimum and maximum width of thresholds 5 possibly occurring in the track 7 for defining a threshold acceptance range SA can be input. In a test unit 23, a plausibility check of the previously determined threshold detection section X is carried out as to whether the threshold width defined by the two discontinuities A, B lies within the limit values stored in the input unit 22. If this check is negative, the activation of an audible and / or visual warning device 24 to alert an operator to the unclear situation occurs.

Bei positiver Prüfung wird unter Halbierung der Wegdistanz zwischen den Sprungstellen A, B der Zentrierpunkt Zx ermittelt, gespeichert und wegversetzt für einen automatischen Vorfahrtsstopp der Maschine 1 abgegeben, um schließlich die Stopfaggregate 9 über der jeweiligen Schwelle 5 zu zentrieren.In the case of a positive test, the centering point Z x is determined by halving the path distance between the discontinuities A, B, stored and sent away for an automatic foremost stop of the machine 1, in order finally to center the tamping units 9 above the respective threshold 5.

Durch die Berechnung der mittleren Schwellenbreite und des mittleren Schwellenabstandes kann das Vorliegen von Doppelschwellen erkannt und angezeigt werden. Durch einen Vergleich der gerechneten mit der tatsächlich gemessenen Vorfahrt wird automatisch ein Korrekturwert berechnet, der die sich während der Arbeit ergebenden unterschiedlichen Verhältnisse (Reibwert Rad/Schiene) in der Berechnung der Sollvorfahrtswerte berücksichtigt. Durch die Möglichkeit, den Bremspunkt der Maschine 1 und das Vorsignal mittels digitaler Einstellmöglichkeit zu verschieben, ist auch eine manuelle Korrektur der Zentrierung der Arbeitsvorrichtung 8 durch die Bedienungsperson möglich. Eventuell im Bereich der Meßlinien 21 liegender Schotter 17 ist durch eine höhenverstellbare Kehreinrichtung 25 (Fig.1) entfernbar.By calculating the average threshold width and the average threshold distance, the presence of double thresholds can be detected and are displayed. By comparing the calculated with the actually measured right of way, a correction value is automatically calculated which takes into account the different ratios (friction value wheel / rail) resulting during the work in the calculation of the desired approach values. By the possibility to move the braking point of the machine 1 and the advance signal by means of digital adjustment, a manual correction of the centering of the working device 8 by the operator is possible. Any gravel 17 lying in the area of the measuring lines 21 can be removed by a height-adjustable sweeping device 25 (FIG. 1).

Claims (7)

  1. A machine (1) having a cyclically operable working device (8) for treating a track (7) comprising sleepers (5) and rails (6), and also having a non-contact scanning device (13) for detecting a sleeper position in connection with an odometer (14) for registering a distance (s) travelled by the machine (1) on the track (7), and a control unit (15) for centering the working device (8) in dependence upon the scanned sleeper position, characterized in that the scanning device (13) is designed as a distance measuring device (16) for non-contact registration of vertical distance measurement values (d) between the scanning device (13), on the one hand, and sleepers (5) or ballast (17) of the track (7), on the other hand, and that the control unit (15) connected to the distance measuring device (16) is designed for continuously and sequentially subdividing the path-correlated measuring span in each case into a sleeper detection section X, comprising distance measurement values (d) differing only slightly from one another, and an adjacent ballast detection section Y characterized by a sequence of abruptly fluctuating distance measurement values (d).
  2. A machine according to claim 1, characterized in that two distance measuring devices (16) are provided, distanced from one another with regard to the transverse direction of the machine, with each of which a separate testing unit (23) is associated.
  3. A method of treating a track (7) by means of a cyclically operable working device (8), wherein, during advance of a machine, the travelled distance (s) is measured and the position of sleepers (5) is scanned in a non-contact manner, characterized in that
    a) along a measuring line (21) extending in the longitudinal direction of the track across sleepers (5) and ballast (17), distance measurement values (d) extending in a vertical direction between the machine (1) and ballast (17) or sleeper (5) are continuously obtained and stored, whereafter
    b) a path-correlated measuring curve (18) thus established is subdivided into a sleeper detection section (X), at the beginning of which a first transition point (A) is registered and which comprises merely minimal variations of the measuring value, which
    c) is followed in each case, in correlation with a second transition point (B), by a ballast detection section (Y) which is characterized by number of sequential, abruptly fluctuating measuring values (d) whose maximal values lie outside of the minimal band width (m).
  4. A method according to claim 3, characterized in that the minimal and maximal distance measurement values (d) defining the sleeper detection section (X) can be stored for defining a minimal band width (m).
  5. A method according to claim 3 or 4, characterized in that the distance, defining the sleeper detection section (X), of the two transition points (A,B) from one another is compared, in the course of a continual plausibility check, with a sleeper acceptance range (SA) for the sleeper width, stored in a control unit (15) and comprising various sleeper widths of different types of sleepers (5) possibly occurring in the track (7).
  6. A method according to one of claims 3 to 5, characterized in that an optical and/or acoustical warning device (24) is activated as soon as the plausibility check of the sleeper detection section (X) produces a result lying outside the stored sleeper acceptance range (SA).
  7. A method according to one of claims 3 to 6, characterized in that a region of the sleeper (5) situated in the measuring line (21) is swept clean in front of the scanning device (13), with regard to the direction of advance of the machine.
EP02450149A 2001-08-09 2002-07-03 Machine and method for recognizing the sleeper positions in a track Expired - Lifetime EP1283301B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT02450149T ATE333536T1 (en) 2001-08-09 2002-07-03 MACHINE AND METHOD FOR DETECTING THE THRESHOLD POSITION OF A TRACK

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0124901A AT411277B (en) 2001-08-09 2001-08-09 MACHINE AND METHOD FOR DETECTING THE THRESHOLD POSITION OF A JOINT
AT12492001 2001-08-09

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EP1283301A2 EP1283301A2 (en) 2003-02-12
EP1283301A3 EP1283301A3 (en) 2004-07-28
EP1283301B1 true EP1283301B1 (en) 2006-07-19

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US (1) US6662728B2 (en)
EP (1) EP1283301B1 (en)
JP (1) JP4058306B2 (en)
CN (1) CN1215229C (en)
AT (2) AT411277B (en)
CA (1) CA2396911C (en)
DE (1) DE50207541D1 (en)
ES (1) ES2266441T3 (en)
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PL203982B1 (en) 2009-11-30
AT411277B (en) 2003-11-25
ATE333536T1 (en) 2006-08-15
DE50207541D1 (en) 2006-08-31
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US6662728B2 (en) 2003-12-16
ATA12492001A (en) 2003-04-15
JP4058306B2 (en) 2008-03-05
CA2396911A1 (en) 2003-02-09
JP2003074004A (en) 2003-03-12
CN1215229C (en) 2005-08-17
CA2396911C (en) 2006-02-14
PL355144A1 (en) 2003-02-10
EP1283301A2 (en) 2003-02-12
RU2002121059A (en) 2004-02-20
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US20030029350A1 (en) 2003-02-13
EP1283301A3 (en) 2004-07-28

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