EP0107833B1 - Vorrichtung zur Messung wellenförmiger Deformationen der Schienenrolloberfläche eines Eisenbahngleises - Google Patents

Vorrichtung zur Messung wellenförmiger Deformationen der Schienenrolloberfläche eines Eisenbahngleises Download PDF

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Publication number
EP0107833B1
EP0107833B1 EP83110242A EP83110242A EP0107833B1 EP 0107833 B1 EP0107833 B1 EP 0107833B1 EP 83110242 A EP83110242 A EP 83110242A EP 83110242 A EP83110242 A EP 83110242A EP 0107833 B1 EP0107833 B1 EP 0107833B1
Authority
EP
European Patent Office
Prior art keywords
rail
fact
wavelength
deformations
chassis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83110242A
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English (en)
French (fr)
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EP0107833A1 (de
Inventor
Romolo Panetti
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.)
Speno International SA
Original Assignee
Speno International SA
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Filing date
Publication date
Application filed by Speno International SA filed Critical Speno International SA
Priority to AT83110242T priority Critical patent/ATE20924T1/de
Publication of EP0107833A1 publication Critical patent/EP0107833A1/de
Application granted granted Critical
Publication of EP0107833B1 publication Critical patent/EP0107833B1/de
Expired 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
    • E01B35/00—Applications of measuring apparatus or devices for track-building purposes
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2203/00—Devices for working the railway-superstructure
    • E01B2203/16—Guiding or measuring means, e.g. for alignment, canting, stepwise propagation

Definitions

  • the present invention relates to a device for measuring the wave deformations of the running surface of the rails of a railroad track.
  • deformations are essentially classified according to their causes and effects in different wavelength ranges (short waves from 3 to 30 cm, and long waves from 130 cm to 3 m).
  • This control is carried out by means of appropriate measuring devices equipping an autonomous measurement vehicle or the rectification vehicle itself.
  • Known measuring devices comprise one or more distance detectors, mechanical or electronic or other, mounted on a chassis which serves as a reference base and bears on the running surface of the rail, either by means of rollers or by one or two pads rigidly fixed to this chassis.
  • Such measuring devices are described for example in patents CH 630,015 or FR 2,485,183.
  • the preamble of claim 1 mentions the characteristics of the device of the present invention which are known from this state of the art.
  • the surface of the rail comprises deformations of long wavelength to which superimposed deformations of short wavelength.
  • the output signal delivered by the distance detector d carried by the reference base r is not only a function of the short or long wave undulations of the rail, but also of the position of the reference base r with respect to this rail which is modified, during the movement of the chassis along the rail, by the wave deformations of the rail. Indeed, the chassis follows, by its rollers or its skids, the peaks and valleys of wave deformations thus modifying the position of the reference base, and therefore its distance from the rail so that the measurement made by the detector d is affected.
  • the object of the present invention is to provide a device for measuring the wave deformations of the running surface of the rails of a railroad which is of simple construction, of adjustment and of easy maintenance and whose position of the reference base is not influenced by wave deformations of short wavelength, and which allows the determination of wave wear long wave, as well as short wave.
  • the present measuring device is distinguished by the characteristics listed in the characterizing part of claim 1.
  • FIG. 3 illustrates a first embodiment of the measuring device resting on a rail and connected to a railway vehicle.
  • Figures 4 and 5 illustrate the measuring device of Figure 1 in a valley, respectively on a vertex of a wave deformation of long wavelength of the rail.
  • FIG. 6 schematically illustrates the processing of the signal delivered by the distance detector of the measuring device of FIGS. 3 to 5.
  • FIG. 7 schematically illustrates a second embodiment of the measuring device.
  • FIG. 8 illustrates a variant of the oscillating pads of the measuring device.
  • the device for measuring the wave deformations of a rail illustrated in FIGS. 3 to 6 comprises a chassis 1 carrying at least one distance detector 2, mechanical, electronic or other, delivering a signal representative of the distance separating the base reference, constituted by the position in space of the chassis 1, of a point on the surface of the rail 3.
  • the surface of this rail comprises wave deformations of short wavelength 1 superimposed on wave deformations of long wavelength L.
  • This chassis 1 of the measuring device is supported on the surface of the rail 3 by means of two pads 4, 4 ′ articulated on the chassis around axes 5, 5, normal to the longitudinal axis of the rail. These axes are preferably substantially parallel to the running surface of the rail.
  • each shoe 4, 4 ′ in the longitudinal direction of the rail is at least equal to twice the wavelength 1 of the short wave deformations which it is desired to measure with precision. Therefore, each shoe 4, 4 'always rests on at least two successive crests of these short wave deformations and each shoe 4, 4' tilts so as to be positioned substantially along a tangent to the undulation of the large rail. wavelength at the right of its axis of articulation 5.5 '.
  • the position of the reference base for the measurement determined by the position in space of the chassis 1, is independent of the wave deformations of short wavelengths 1 and no longer depends only on the wave deformations of long lengths. of L waves.
  • the distance between the articulations of the two skids is at least equal to twice the wavelength of the short wavelength ripples that it is desired to measure with precision, this that is to say the length of an oscillating pad 4, 4 ′, but at most equal to the wavelength of the longest wave deformations.
  • the signal delivered by the distance detector 2 is a signal representative of the amplitude of the long wave deformations modulated by the amplitude of the short wave deformations. It is therefore a simple measurement signal comprising a low frequency component corresponding to long wave deformations independent of short wave deformations and a high frequency component corresponding to short wave deformations independent of long wave deformations.
  • this measurement signal is therefore very simple, it suffices to amplify it at 6, then to separate the high and low frequency components using a part of a high pass filter 7 and d on the other hand using a low pass filter 8 to obtain signals f and F representative of the wave deformations of short wavelengths respectively of long wavelengths.
  • These signals f and F supply two inputs to a recorder, the strip 9 of which travels at a speed proportional to the speed of the measurement vehicle. This is obtained in a known manner by a pulse generator 10 driven by a wheel R of the towing vehicle supplying a stepping motor 11 driving the paper strip of the recorder.
  • the second embodiment of the measuring device illustrated in Figure 7 also includes a frame 1 provided, as in the first embodiment, pads 4, 4 'articulated on axes.
  • the center distance between the pivot axes of the pads 4, 4 'and the length of these pads are determined in the same way as in the first embodiment.
  • the chassis 1 carries three distance detectors ya, yb and yc, one of which yc is located in the middle of the distance separating the other two, and in the middle of the inter-axis separating the articulations of the pads 4, 4 '.
  • the distance detector yc measures the distance separating a point from the surface of the rail of the reference base, while the distance detectors ya and yb measure distances separating a point from the upper face of each shoe 4, 4 'of said baseline. These distances are in fact representative of the inclination a, of the pads 4, 4 ′ with respect to the ideal straight line which the surface of the rail should have.
  • the short waves are superimposed on the long waves so that the central detector yc, measures a quantity which corresponds to the sum of the deformations due to the short and long waves while the sum of the measurements of the detectors ya and yb corresponds to the amplitude of deformations of long waves.
  • the amplitudes of the long and short waves can be determined using extremely simple processing of the signals delivered by these detectors.
  • This measuring device is very sensitive and can even be used in leveling operations or to control the leveling of the railway.
  • the chassis 1 is connected to a rail vehicle V by two hydraulic cylinders 12 allowing it to be lifted and guided along the rail line.
  • the rail vehicle V can be equipped with at least one measuring device per rail line.
  • the pads 4, 4 ′ may comprise, in known manner, vertical flanks or rollers intended to come into contact with the flank inside of the rail head under the action of a spacer device to ensure lateral guidance of the chassis 1 along the rail 3.
  • the chassis 1 is also provided with articulated shoes 4,4 'and a distance detector 2.
  • these pads are fitted with wheels or rollers 13 serving as a guide and support for a band or chain 14.
  • the pads oscillate and roll, the band 14 circulating around the rollers 13, which greatly reduces the wear of the pads.
  • the rollers 13 and the chains or bands 14 can be replaced by a succession of rollers of small diameter and very close to each other.
  • the chassis 1 may include several distance detectors offset transversely with respect to the rail to measure the wave deformations of several different generatrices of the rail head.
  • Such a measuring device is thus compact, it is robust, simple and precise and requires virtually no maintenance.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Magnetic Heads (AREA)
  • Coating With Molten Metal (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Metal Rolling (AREA)

Claims (11)

1. Vorrichtung zum Messen wellenförmiger Verformungen der Lauffläche von Schienen mit einem über Auflageelemente (4,4') auf mindestens einer Schiene (3) aufliegenden Rahmen (1), der an einem Schienenfahrzeug (V) angebracht ist, und mit mindestens einem Detektor (2), dessen elektrische Ausgangssignale den Abständen zwischen einer durch die Raumlage des Rahmens (1) definierten Bezugsgeraden und aufeinanderfolgenden Punkten der Oberfläche des abgefahrenen Schienenstrangs (3) entsprechen, liefernden Detektor, dadurch gekennzeichnet, dass die Auflageelemente zwischen dem Rahmen (1) und der Schiene (3) aus zwei senkrecht zur Längsachse der Schiene (3) an dem Rahmen (1) angelenkte Kufen (4, 4') bestehen und die Kufen in Richtung der Längsachsen (5) der Schiene mindestens doppelt so lang wie kurzwellige (1) Verformungen jedoch kürzer als langweilige (L) Verformungen sind.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand der Schwenkachsen (5, 5') der beiden Kufen (4,4') des Rahmens (1) mehr als doppelt so gross wie die Wellenlänge (1) der kurzwelligen Verformungen jedoch kleiner als die Wellenlänge (L) der langwelligen Verformungen ist.
3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Kufen (4, 4') vertikale Bereiche aufweisen, die durch eine Spurhaltevorrichtung an die Innenflanke der Schiene (3) angedrückt werden.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jede Kufe (4, 4') Rollwalzen (13) aufweist, um die Bänder oder Ketten (4) laufen.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie über Stellzylinder (12) an dem Eisenbahnwagen (V) befestigt ist, die ihr Anheben ermöglichen.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch mehrere senkrecht zur Schiene versetzt angeordnete Abstandsdetektoren (2), die die wellenförmigen Verformungen längs mehrerer Mantellinien des Schienenkopfs messen.
7. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass jeder Detektor (2) den Amplituden der langweiligen (L) Verformungen proportionale Signale abgibt, die mit den Amplituden (1) der kurzwelligen Verformungen moduliert sind, und dass die Vorrichtung eine elektronische Signalverarbeitungsanlage (6, 7, 8) aufweist.
8. Vorrichtung nach Anspruch 7, gekennzeichnet durch einen Tiefpassfilter (8), der die niederfrequente, den langweiligen (L) Verformungen entsprechende Komponente des Signals durchlässt, und einen parallel zum Tiefpassfilter (8) angeordneten Hochpassfilter (7), der die hochfrequente, den kurzwelligen (1) Verformungen entsprechende Komponente des Signals durchlässt.
9. Vorrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch drei in Schienenrichtung beabstandet angeordnete Detektoren (Ya, Yb, Yc), wobei der mittlere Detektor (Yc) ein zur Summe der Amplituden der lang-und kurzwelligen Verformungen proportionales Signal abgibt.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Projektionen der Abstände zwischen den anderen Detektoren (Ya, Yb) und den dazugehörigen Kufenschwenkachsen (5, 5') auf die Basislinie gleich 1/8 des Abstands zwischen den Schwenkachsen der Kufen ist, und die Summe der von diesen beiden Detektoren (2) gelieferten Signale, ausschliesslich zur Amplitude der langweiligen (L) Verformungen proportional ist.
11. Vorrichtung nach Anspruch 10, gekennzeichnet durch eine elektronische Signalverarbeitungseinrichtung, die ein zur Differenz zwischen dem Signal des mittleren Detektors und der Summe der Signale der anderen Detektoren proportionales Signal abgibt, das der Amplitude der kurzwelligen Verformungen entspricht.
EP83110242A 1982-10-18 1983-10-14 Vorrichtung zur Messung wellenförmiger Deformationen der Schienenrolloberfläche eines Eisenbahngleises Expired EP0107833B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110242T ATE20924T1 (de) 1982-10-18 1983-10-14 Vorrichtung zur messung wellenfoermiger deformationen der schienenrolloberflaeche eines eisenbahngleises.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6044/82 1982-10-18
CH6044/82A CH653073A5 (fr) 1982-10-18 1982-10-18 Dispositif de mesure de la profondeur des deformations ondulatoires de la surface de roulement des rails d'une voie ferree.

Publications (2)

Publication Number Publication Date
EP0107833A1 EP0107833A1 (de) 1984-05-09
EP0107833B1 true EP0107833B1 (de) 1986-07-23

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EP83110242A Expired EP0107833B1 (de) 1982-10-18 1983-10-14 Vorrichtung zur Messung wellenförmiger Deformationen der Schienenrolloberfläche eines Eisenbahngleises

Country Status (9)

Country Link
US (1) US4548070A (de)
EP (1) EP0107833B1 (de)
JP (1) JPS5994002A (de)
AT (1) ATE20924T1 (de)
AU (1) AU561570B2 (de)
CA (1) CA1199491A (de)
CH (1) CH653073A5 (de)
DE (2) DE107833T1 (de)
ZA (1) ZA837574B (de)

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GB8603060D0 (en) * 1986-02-07 1986-03-12 Rank Taylor Hobson Ltd Usefulness of in situ roundness measurement
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GB2246440B (en) * 1990-05-26 1994-05-18 Tdm Tape Services Ltd Rail corrugation transducer apparatus
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DE19721915C1 (de) * 1997-05-26 1998-12-10 Stn Atlas Elektronik Gmbh Verfahren und Vorrichtung zur Messung von Unebenheiten in einer Objektoberfläche
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JP2019015552A (ja) * 2017-07-05 2019-01-31 東日本旅客鉄道株式会社 レールの波状摩耗測定装置
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CN116039698B (zh) * 2023-03-31 2023-07-07 成都盛锴科技有限公司 一种利用声音特征进行轨道线路健康检测的方法

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Also Published As

Publication number Publication date
ZA837574B (en) 1984-06-27
CH653073A5 (fr) 1985-12-13
EP0107833A1 (de) 1984-05-09
CA1199491A (en) 1986-01-21
AU2024483A (en) 1984-05-03
US4548070A (en) 1985-10-22
JPH034083B2 (de) 1991-01-22
DE107833T1 (de) 1984-09-13
DE3364736D1 (en) 1986-08-28
AU561570B2 (en) 1987-05-14
JPS5994002A (ja) 1984-05-30
ATE20924T1 (de) 1986-08-15

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