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 PDFInfo
- 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
- Authority
- FR
- France
- Prior art keywords
- nabla
- fastener
- instrument
- measurement
- sliding rod
- 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.)
- Granted
Links
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
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)
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 |
Family
ID=9285358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (1)
Country | Link |
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FR (1) | FR2539866A1 (en) |
Cited By (4)
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)
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 |
-
1983
- 1983-01-26 FR FR8301289A patent/FR2539866A1/en active Granted
Patent Citations (4)
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)
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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ST | Notification of lapse |