FR2539866A1 - Portable instrument for measuring the residual play of "Nabla" elastic fasteners for clamping railway rails - Google Patents

Portable instrument for measuring the residual play of "Nabla" elastic fasteners for clamping railway rails Download PDF

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Publication number
FR2539866A1
FR2539866A1 FR8301289A FR8301289A FR2539866A1 FR 2539866 A1 FR2539866 A1 FR 2539866A1 FR 8301289 A FR8301289 A FR 8301289A FR 8301289 A FR8301289 A FR 8301289A FR 2539866 A1 FR2539866 A1 FR 2539866A1
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France
Prior art keywords
nabla
fastener
instrument
measurement
sliding rod
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Granted
Application number
FR8301289A
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French (fr)
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FR2539866B1 (en
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Individual
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Individual
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Priority to FR8301289A priority Critical patent/FR2539866A1/en
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Publication of FR2539866B1 publication Critical patent/FR2539866B1/fr
Granted 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The instrument is intended to measure and indicate instantaneously the residual play existing under elastic fasteners of the "Nabla" type, intended for clamping railway rails. The measurement is obtained by the difference in levels existing between the two contact points made at 8a and 8b on the framework 6 on the top of the fastener 1 and the contact point 8c of the sliding rod 9 placed at the centre of the "Nabla" fastener 1 at its upper part. This difference in height is read from a comparator dial which is suitably oriented so as to facilitate reading by the operator who holds this instrument by the handle 7, on top of the "Nabla" fastener 1.

Description

La présente invention concerne un instrument destine à mesurer et à indiquer le jeu existant sous les attaches en acisr commune ment désignées " Nabla " utilisées à la fixation des rails de chemin de fer sur les traverses.The present invention relates to an instrument intended to measure and indicate the clearance existing under the steel fasteners commonly designated "Nabla" used for fixing railway rails on the sleepers.

Le jeu existant sous ces attaches Nabla détermine leur élasticité résiduelle, et il est proportionnel à la pressai( effective de serrage du rail sur la traverse, deoù son importance.The play existing under these Nabla fasteners determines their residual elasticity, and it is proportional to the pressure (effective tightening of the rail on the crosspiece, hence its importance.

Ce jeu est actuellement mesuré soit à l'aide de jauges d'épaisseur que l'on glisse sous l'attache Nabla en son centre, soit à l'aide de calibres maxi-mini donnant une approximation de la tolérance de serrage, et ne permettant pas de connaître avec précision et rapidité le jeu réel existant sous l'attache Nabla en son centre
L'instrument objet de l'invention est léger et portable et permet de mesurer et d'obtenir la lecture instantanée et exacte du jeu résiduel existant au centre de l'attache Nab2 et permet donc de remédier aux inconvénients précités
Il est principalement caractérisé par le fait qu'il comporte un bâti dont chacune des deux extrémités vient au contact des bords extrêmes de l'attache Nabla, et un palpeur central coulissant venant en contact du centre supérieur de l'attache Nabla, les trois points ainsi formés étant alignés. La cambrure centrale de l'attache
Nabla se trouyera donc mesurée par le palpeur central, ce qui en conséquence déterminera. le jeu existant sous l'attache Nabla en son centre.This clearance is currently measured either using thickness gauges that are slipped under the Nabla fastener at its center, or using maxi-mini calibers giving an approximation of the tightening tolerance, and does not not allowing to know precisely and quickly the real game existing under the Nabla fastener in its center
The instrument that is the subject of the invention is light and portable and makes it possible to measure and obtain the instantaneous and exact reading of the residual clearance existing at the center of the Nab2 fastener and therefore makes it possible to remedy the aforementioned drawbacks
It is mainly characterized by the fact that it comprises a frame, each of the two ends of which comes into contact with the extreme edges of the Nabla fastener, and a sliding central probe coming into contact with the upper center of the Nabla fastener, the three points thus formed being aligned. The central camber of the fastener
Nabla will therefore be measured by the central probe, which will therefore determine. the existing game under the Nabla tie in its center.

Le palpeur central actionne indirectement une montre de comparateur solidaire du bâti de l'instrument, donnant ainsi lecture directe et comparative des niveaux existant entre les deux points de contact du bâti et le point de contact du palpeur central, lorsque ceux-ci sont posés sur une attache Nabla.The central probe indirectly activates a comparator watch secured to the frame of the instrument, thus giving a direct and comparative reading of the levels existing between the two contact points of the frame and the contact point of the central probe, when these are placed on a Nabla attachment.

L'invention sera mieux comprise à l'aide de la description ci-après qui en donne un exemple non limitatif de réalisation pratique et qui est illustrée par les dessins joints
Dans ces dessins
La figure 1 est une vue d'ensemble en élévation d'une attache Nabla posée sur une butée isolante en matière plastique , cet ensemble représenté reposant d'un côte sur le dessus d'une traverse de chemin de fer en béton dont la configuration est bien connue, et de l'autre c8té sur un patin de rail Vignole standard représenté partiellement. L'ensemble attache Nabla et butée isolante est normalement serré par un boulon non représenté.The invention will be better understood using the description below which gives a nonlimiting example of practical embodiment and which is illustrated by the accompanying drawings.
In these drawings
Figure 1 is an overall elevational view of a Nabla fastener placed on an insulating stopper of plastic material, this assembly shown resting on one side on the top of a concrete railway sleeper whose configuration is well known, and on the other side on a standard Vignole rail pad shown partially. The assembly of Nabla and insulating stopper is normally tightened by a bolt not shown.

Linstrument objet de l'invention est montré en position sur le dessus de attache Nablas en cours de mesure.The object of the invention is shown in position on top of the Nablas attachment during measurement.

La figure 2 est une vue de droite de la figure 1 montrant l'attache Nabla seule avec l'instrument objet de l'invention complet et en cours de mesure.Figure 2 is a right view of Figure 1 showing the Nabla attachment alone with the instrument object of the invention complete and being measured.

A la figure 1, ltattadle Nabla (9) est pose sur la butée (2). L'ensemble prend appui à l'arriere de la butée (2) sur le dessus de la traverse (5), et à l'avant de la butée (2) sur le dessus du patin du rail (3) sous lequel se trouve une semelle en dlastomere (4). L'instrument objet de l'invention est représenté par son bssti (6) auquel est fixée une poignée (7). Cette figure montre clairement la position du bAti (6) de l'instrument sur le dessus-de l'attache (1) située à quelques millimètres du bord (15) de l'attache (1).In Figure 1, the Nabla ltattadle (9) is placed on the stop (2). The assembly is supported at the rear of the stop (2) on the top of the cross member (5), and at the front of the stop (2) on the top of the rail pad (3) under which is located a dlastomer sole (4). The instrument which is the subject of the invention is represented by its bssti (6) to which a handle (7) is fixed. This figure clearly shows the position of the frame (6) of the instrument on the top of the clip (1) located a few millimeters from the edge (15) of the clip (1).

La figure 2 montre l'ensemble de l'instrument dont le btti (6) auquel est fixée la poignée (7). La partie inférieure du bâti (6) dont la longueur totale est approximativement celle de la largeur de l'attache (1) comporte deux points de contact (8a et 8b) situés près des extrémités de l'attache (1), et en son centre une tige coulissante (9) constituant à sa partie inférieure le troisième point de contact (8c). Ces trois points de contact (8a, 8b, 8c) viennent sur le dessus de l'attache (1) lorsque l'instrument est en position de travail.De plus, ils sont alignés comme le montre la figure 1 Mals, pour des raisons techniques, le point de contact 8c pourrait être légèrement décalé en abcisse ou en ordonnée dans le plan formé par les trois points de contact (8a, b, 8c) sans changer le principe de mesure de l'instrument, ceci pouvant être considéré comme une des variantes possibles.Figure 2 shows the entire instrument including the btti (6) to which the handle (7) is attached. The lower part of the frame (6) whose total length is approximately that of the width of the fastener (1) has two contact points (8a and 8b) located near the ends of the fastener (1), and in its center a sliding rod (9) constituting at its lower part the third contact point (8c). These three contact points (8a, 8b, 8c) come on top of the clip (1) when the instrument is in the working position. In addition, they are aligned as shown in Figure 1 Mals, for reasons techniques, the contact point 8c could be slightly offset on the abscissa or on the ordinate in the plane formed by the three contact points (8a, b, 8c) without changing the measuring principle of the instrument, this being able to be considered as a possible variants.

Une équerre pivotante (10) vient en appui sur le dessus de la tige coulissante (9), et pivote autour d'un axe (11) solidaire du bssti (6) dans un plan parallèle à la droite formée par les points de contact (8a, 8b).A pivoting bracket (10) comes to rest on the top of the sliding rod (9), and pivots around an axis (11) integral with the bssti (6) in a plane parallel to the right formed by the contact points ( 8a, 8b).

Une montre de comparateur classique (12) est rendue solidaire du bâti (6) par une vis de serrage (15). A conventional comparator watch (12) is made integral with the frame (6) by a clamping screw (15).

La tige coulissante (14) du comparateur (12) vient en contact permanent contre l'autre cdté de 11 équerre (10) grâce au ressort interne du comparateur (12) qui a toujours tendance à pousser la tige 14 selon la flèche F.The sliding rod (14) of the comparator (12) comes into permanent contact against the other side of the square (10) thanks to the internal spring of the comparator (12) which always tends to push the rod 14 along the arrow F.

Lorsque l'instrument est pris par la poignée (7) et placé manuellement sur le dessus d'une attache (i) dont on désire contr8ler le serrage, donc le jeu J existant au centre de l'attache (1) comme. représenté figure 2, la tige (9) remonte verticalement à l'intérieur du bssti (6), par le contact (8c) sur le dessus de l'attache (1) jusqu'd ce que les contacts (8a et 8b) soient établis entre le btti (6) et le dessus de l'attache (1). When the instrument is taken by the handle (7) and placed manually on top of a fastener (i) whose tightening is desired to be controlled, therefore the clearance J existing at the center of the fastener (1) like. shown in Figure 2, the rod (9) rises vertically inside the bssti (6), by the contact (8c) on the top of the clip (1) until the contacts (8a and 8b) are established between the btti (6) and the top of the fastener (1).

La mesure de la cambrure de l'attache (i) est ainsi réalisée, et transmise au comparateur (12) par linter- médiaire de l'équerre pivotante (10), puis la lecture comparative de hauteur entre les points (8a, 8b) et le point (8c) est instantanée sur la montre (t2) le présent instrument trouve son application dans tous les cas où l'on désire connattre le jeu réel existant sous les attaches Nabla, donc l'importance -du jeu résiduel de serrage de ces attachés The measurement of the camber of the fastener (i) is thus carried out, and transmitted to the comparator (12) via the pivoting bracket (10), then the comparative reading of height between the points (8a, 8b) and the point (8c) is instantaneous on the watch (t2) the present instrument finds its application in all cases where it is desired to know the actual play existing under the Nabla fasteners, therefore the importance - of the residual play of tightening of these attachés

Claims (3)

REVENDICATIONS 1 - Instrument de mesure et de lecture instantanée de l'élasticité résiduelle des attaches Nabla de fixation des rails de chemin de fer caractérisé par le fait que le bâti de mesurage prend appui sur le dessus de l'attache Nabla et à chacune de ses extrémités, et que la mesure de l'élasticité résiduelle, liée au jeu existant sous le centre de l'attache, est obtenue à l'aide d'une tige coulissante venant s'appuyer au centre de l'attache Nabla à quelques millimètres du bord latéral de l'attache, les trois points de contact ainsi constitués pouvant être alignés selon une parallèle aux génératrices du rail. CLAIMS 1 - Instrument for instantaneous measurement and reading of the residual elasticity of the Nabla fasteners for fixing railway rails, characterized in that the measuring frame is supported on the top of the Nabla fastener and at each of its ends, and that the measurement of the residual elasticity, linked to the play existing under the center of the fastener, is obtained using a sliding rod coming to rest in the center of the Nabla fastener a few millimeters from the lateral edge of the fastener, the three contact points thus formed can be aligned in a parallel to the generatrices of the rail. 2 - Instrument tel que défini dans le revendication 1 caractérisé par le fait que le moyen de lecture instantanée de la mesure de l'élasticité résiduelle est constitué par une montre de comparateur rendue solidaire du b & i de mesure et donnant ainsi la lecture comparative de la mesure existante entre les points de contact du bâti de l'instrument situés aux extrémités de l'attache Nabla, et entre celui réalisé par la tige coulissante.2 - Instrument as defined in claim 1 characterized in that the instantaneous reading means of the measurement of the residual elasticity is constituted by a comparator watch made integral with the measurement b & i and thus giving the comparative reading of the existing measurement between the contact points of the instrument frame located at the ends of the Nabla attachment, and between that made by the sliding rod. 3 - Instrument tel que défini dans le revendication 2 et 1, caractérisé par le fait que le moyen de transmission de la différence de hauteur existante entre les extrémités de l'attache Nabla et sa partie centrale réalisé entre la tige coulissante eentrale et la montre de comparateur est obtenu par une équerre pivotantes 3 - Instrument as defined in claim 2 and 1, characterized in that the means of transmitting the difference in height existing between the ends of the Nabla fastener and its central part produced between the central sliding rod and the watch comparator is obtained by a pivoting bracket
FR8301289A 1983-01-26 1983-01-26 Portable instrument for measuring the residual play of "Nabla" elastic fasteners for clamping railway rails Granted FR2539866A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8301289A FR2539866A1 (en) 1983-01-26 1983-01-26 Portable instrument for measuring the residual play of "Nabla" elastic fasteners for clamping railway rails

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8301289A FR2539866A1 (en) 1983-01-26 1983-01-26 Portable instrument for measuring the residual play of "Nabla" elastic fasteners for clamping railway rails

Publications (2)

Publication Number Publication Date
FR2539866A1 true FR2539866A1 (en) 1984-07-27
FR2539866B1 FR2539866B1 (en) 1985-04-19

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FR8301289A Granted FR2539866A1 (en) 1983-01-26 1983-01-26 Portable instrument for measuring the residual play of "Nabla" elastic fasteners for clamping railway rails

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643714A1 (en) * 1989-02-24 1990-08-31 France Etat Ponts Chaussees Apparatus for measuring the variation in curvature of a beam under the action of a variation in the bending moment and method for systematic auscultation of a concrete bridge using the said measurement apparatus
FR2737003A1 (en) * 1995-07-19 1997-01-24 Fassetta Measuring gauge for determining tightness of rail track anchorage clips - includes movable device attached to clip and rail track with electrical sensor switches detecting position of feeler gauges on clip
WO2007063557A1 (en) * 2005-11-29 2007-06-07 Giorgio Pisani System and method for simultaneously controlling and storing the physical parameters during the internal stress adjustment operations in the long welded rail installation
ES2684435A1 (en) * 2017-03-30 2018-10-02 ADIF (Administrador de Infraestructuras Ferroviarias) DEVICE FOR CHECKING SUBJECTIONS ON RAILWAYS (Machine-translation by Google Translate, not legally binding)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579206A (en) * 1944-03-29 1946-07-26 Archibald Milne Hamilton Improvements in or relating to extensometers or similar instruments
CH251163A (en) * 1945-11-28 1947-10-15 U Dr Huggenberger Arnold Strain gauges and deflection gauges.
FR1027097A (en) * 1950-10-31 1953-05-07 Curvature measuring and comparison device
WO1979000207A1 (en) * 1977-10-13 1979-04-19 S Norberg A device for testing cross-country skis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579206A (en) * 1944-03-29 1946-07-26 Archibald Milne Hamilton Improvements in or relating to extensometers or similar instruments
CH251163A (en) * 1945-11-28 1947-10-15 U Dr Huggenberger Arnold Strain gauges and deflection gauges.
FR1027097A (en) * 1950-10-31 1953-05-07 Curvature measuring and comparison device
WO1979000207A1 (en) * 1977-10-13 1979-04-19 S Norberg A device for testing cross-country skis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643714A1 (en) * 1989-02-24 1990-08-31 France Etat Ponts Chaussees Apparatus for measuring the variation in curvature of a beam under the action of a variation in the bending moment and method for systematic auscultation of a concrete bridge using the said measurement apparatus
FR2737003A1 (en) * 1995-07-19 1997-01-24 Fassetta Measuring gauge for determining tightness of rail track anchorage clips - includes movable device attached to clip and rail track with electrical sensor switches detecting position of feeler gauges on clip
WO2007063557A1 (en) * 2005-11-29 2007-06-07 Giorgio Pisani System and method for simultaneously controlling and storing the physical parameters during the internal stress adjustment operations in the long welded rail installation
ES2684435A1 (en) * 2017-03-30 2018-10-02 ADIF (Administrador de Infraestructuras Ferroviarias) DEVICE FOR CHECKING SUBJECTIONS ON RAILWAYS (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
FR2539866B1 (en) 1985-04-19

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