WO1995031027A1 - Fastening clamp for an overhead telecommunications cable - Google Patents
Fastening clamp for an overhead telecommunications cable Download PDFInfo
- Publication number
- WO1995031027A1 WO1995031027A1 PCT/FR1995/000581 FR9500581W WO9531027A1 WO 1995031027 A1 WO1995031027 A1 WO 1995031027A1 FR 9500581 W FR9500581 W FR 9500581W WO 9531027 A1 WO9531027 A1 WO 9531027A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cable
- housing
- clamp
- parts
- nut
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Definitions
- the present invention relates to a clamp intended to ensure the attachment and immobilization of an overhead cable with respect to a support for the latter, such as a vertical post, a facade wall or the like. , the tension of this cable between two supports of this kind can be adjusted by means of this clamp.
- the invention applies more particularly to a clamp of this kind, suitable for making the fastening and adjusting the tension of a fiber optic cable but of course extends to the more general field of distribution cables or connection, whether or not these cables contain such fibers.
- clamps require, for mounting the cable between its supports, a relatively heavy installation, in particular to ensure beforehand the tension of the cable by means of a pulley and a traction member provided with a dynamometer, kept in tension until the clamp is put in place and fixed to the support.
- clamps are conventional in the art and commonly used for immobilizing cables comprising internal conductors of copper or other metal, which can withstand a significant clamping force between the jaws of these clamps, which is not the case when the cable considered contains optical fibers for which the clamping and tensile forces are notably more limited.
- the present invention relates to an aerial cable clamp, which is versatile, that is to say which can be used both with a metal conductor cable and optical fibers, which has great ease for its installation carried out very quickly and which allows adjustment of the cable tension by the clamp itself.
- the invention also relates to a clamp of this kind, which can be used, both at the end of the line as a stop clamp, as well as in part to support and immobilize the cable relative to its support, thus avoiding use two different types of pliers, as in the prior art.
- the clamp considered comprises an external housing having a bore for crossing the cable and means for exerting on this cable a controlled and adjustable tensile force with respect to the housing.
- this grip is characterized in that the housing internally comprises a hollow sleeve with an internal passage of generally cylindrical shape adapted to receive the cable s • extending axial ent in the sleeve in engagement with the outer surface of cable, which has externally raised rings, extending with a helical configuration in the direction of the longitudinal axis of the cable, the hollow sleeve consisting of a nut, in two parts adapting to one another around the cable and having an internal thread cooperating with the rings of the sheath, the nut being extended outside the housing by a head, immobilizing it in translation without preventing it from being rotated, so as to be able to exert on the sheath the desired tensile force.
- the housing comprises, at the end of the cable-through bore, a complementary nut for axially maintaining this cable.
- the clamp is characterized in that the rings are directly engaged the interior of the housing with the helical thread of an endless screw, mounted to rotate freely inside the housing and extending parallel to the axis of the cable, the housing consisting of two separable parts, interlocking mutually with respect to each other using temporary fixing means.
- the fixing means are advantageously constituted by flexible tongues provided with a hook-shaped end, carried by one of the parts of the housing and capable of engaging in receiving housings provided in the other. part, these housings comprising immobilization spans for the hook of the tabs engaging behind these spans when the two parts of the housing are fitted.
- the clamp thus produced has the advantages already mentioned; in addition, it can be implemented whatever the nature of the cable used and in particular the structure of the outer sheath of this cable, which can be smooth or have a rough surface, which in the latter case improves its screw anchoring -in relation to the internal surface of the two parts with conical external profile, housed in the sleeve.
- FIG. 1 is a block diagram, illustrating the mounting of a telecommunications cable between any two vertical supports.
- FIG. 2 is a cross-sectional view of an attachment clamp according to the invention.
- FIG. 3 is another sectional view, on a smaller scale, of the clamp according to Figure 2 by a plane perpendicular thereto.
- - Figure 4 illustrates the various parts of the clamp in exploded view, to better explain the way in which their assembly is carried out.
- FIG. 5 is a sectional view schematically illustrating an alternative embodiment, with a cable, the sheath of which has external projecting rings wound helically along the direction of the longitudinal axis of the cable.
- FIG. 6 illustrates another variant where the cable sheath has straight grooves, in parallel planes, perpendicular to the longitudinal axis of the cable.
- the reference 1 generally designates a telecommunications cable, with metallic conductors or preferably with optical fibers, this cable being mounted "overhead" between two vertical supports, respectively 2 and 3, on which the ends of this cable is immobilized by means of clamps and tension adjustment, according to the invention.
- the cable can extend beyond its supports 2 and 3, these occupying, as the case may be, intermediate as well as terminal positions.
- FIGS 2 and 3 illustrate in more detail the structure of the attachment clamp 4.
- Part 6 has an internal countersink 8 for mounting a screw, making it possible to immobilize the housing against the support 2, this method of fixing having no limiting nature in itself, the housing 5 also being able to include in a lateral flange 10 of its part 6 of the holes 11 for the passage of holding studs or the like. These holes are used in particular for immobilizing the housing on a support, when the clamp 4 is used as a stop clamp.
- the second part 7 of the housing 5 advantageously has, in its face directed towards the first part 6, flexible tongues 12 each terminated by a hook 13, these tongues being provided for engaging in housings 14 of the part 6, bringing the hooks 13 behind a bearing surface 15 of these housings, the two parts of the housing thus assembling each other in the manner of a clip.
- the two parts 6 and 7 of the housing 5 are moreover closed laterally (FIG. 2) by parallel and opposite flanges, respectively 16 and 17, internally delimiting a cavity 18.
- the flanges 16 and 17 also have openings 19 and 20 , facing one another and forming through the housing 5 a transverse bore 21 in which the cable 1 engages.
- this cable is secured to an immobilizing sleeve 22, the latter preferably being made up of two parts 23 and 24 ( Figure 4), hinged together to fold around the cable 1 while being secured by means of a locking tongue 26 and a blind blocking hole 27 where this tongue engages.
- the two parts 23 and 24 of the sleeve 22 have an internal housing 28 which has a conical profile and which receives a clamping jaw 29 surrounding the cable 1.
- This jaw also has a conical external profile, allowing it to come to fit in the housing 28 of the sleeve, and is, like the latter, formed of two parts, respectively 30 and 31 ( Figure 4), arranged so as to come to surround and tightening tightly from the outside the sheath of the cable 1, the latter being in these conditions perfectly immobilized in the sleeve 22, in particular when a tensile force is exerted on its cable in its longitudinal direction.
- the sleeve 22 In its external surface, the sleeve 22 finally comprises a toothing 32, in the form of a rack, the successive teeth of which are provided to cooperate with an external thread 33 of an endless screw 34, mounted inside the housing 5 in the cavity 18 thereof, extending parallel to the axis of the sleeve 22 and of the cable 1 immobilized therein by the jaw 29.
- the endless screw 34 is mounted to rotate freely inside the housing 5 by means of two end journals 35 and 36, respectively supported by bearings 37 and 38 provided in the lateral flanges 16 and 17.
- the journal 36 is extended, outside the housing 5, by a control head 39, here in the form of a hexagon nut, this being adapted to cooperate with a torque wrench 40 or any other drive system with limiter of torque, making it possible to move the head 39 and to cause the rotation of the worm screw 34 on demand.
- This screw in turn causes, by means of the toothing 32 of the sleeve 22, the displacement of the latter in the bore 21, by exerting on the cable 1 an appropriate tensile force making it possible to permanently adjust its tension between its supports 2 and 3 ( Figure 1).
- the housing 5 receiving the cable 1 in its transverse bore 31.
- the cable is no longer smooth on the outside but has a sheath 50 whose external profile includes grooves 51 which, in the example shown, extend in a helix around the cable.
- a nut 52 formed of two parts, respectively 53 and 54, adapting to each other and which internally have a thread 55 of the same pitch as the 'propeller formed by the rings 51 of the sheath 50, which cooperate with this thread as illustrated.
- the two parts 53 and 54 of the nut are extended externally by a head 56, immobilizing this nut in translation but leaving it free to turn on itself relative to the sheath 50, by being driven by a control means (not shown), having the same effect as the torque wrench 40, shown in Figure 2.
- a second nut 57 can be mounted and immobilized on the opposite end of the housing 5, in line with the opening 19 of the latter, this nut likewise comprising an internal thread 58, cooperating with the rings 51 of the sheath, for maintain the latter in an axial position independently of the first nut 52.
- FIG. 6 illustrates another variant in which the outer sheath of the cable 1 has rings 59 which, instead of being wound helically around the cable, are straight and extend in neighboring parallel planes, perpendicular to the axis of the cable.
- the housing 5 has a general configuration close to that illustrated on the
- FIG 2 with a 34 'worm screw whose thread helical 33 'is in direct engagement with the rings 59 of the cable which passes through the housing in the axial passage provided in the housing between the openings 19 and 20 thereof.
- the screw 34 ' comprises, as in the previous example, pins 35' and 36 'supported in bearings 37' and 38 *.
- a control head 39 'cooperates with an operating key 40'.
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- Clamps And Clips (AREA)
Abstract
A fastening and tension-adjusting clamp, in particular for an overhead telecommunications cable, comprising an outer housing (5) with a through-bore (21) for the cable (1) and members (22, 29, 34, 52) for controllably exerting on said cable a pulling force adjustable for the housing.
Description
Pince d'attache pour câble aérien de télécommunications Clamp for overhead telecommunications cable
La présente invention est relative à une pince destinée à assurer l'attache et l'immobilisation d'un câble aérien vis-à-vis d'un support pour celui-ci, tel qu'un poteau vertical, un mur de façade ou autre, la tension de ce câble entre deux supports de ce genre est susceptible d'être ajustée au moyen de cette pince.The present invention relates to a clamp intended to ensure the attachment and immobilization of an overhead cable with respect to a support for the latter, such as a vertical post, a facade wall or the like. , the tension of this cable between two supports of this kind can be adjusted by means of this clamp.
L'invention s'applique plus particulièrement à une pince de ce genre, adaptée à réaliser l'attache et le réglage de la tension d'un câble à fibres optiques mais s'étend bien entendu au domaine plus général des câbles de distribution ou de branchement, que ces câbles comportent ou non de telles fibres.The invention applies more particularly to a clamp of this kind, suitable for making the fastening and adjusting the tension of a fiber optic cable but of course extends to the more general field of distribution cables or connection, whether or not these cables contain such fibers.
Les solutions actuellement connues pour l'immobilisation d'un câble vis-à-vis de supports du genre précité, soit en partie courante du câble, soit en fin de ligne à ses extrémités pour arrêter celles-ci, comportent des mâchoires ou similaires, notamment de forme générale conique à ces extrémités, toutes ces pinces d'arrêt ou en partie courante étant prévues pour serrer le câble entre elles en le bloquant rigidement en position lorsque les deux mâchoires sont appliquées l'une contre l'autre.The solutions currently known for immobilizing a cable with respect to supports of the aforementioned type, either in the running part of the cable, or at the end of the line at its ends to stop them, include jaws or the like, in particular of generally conical shape at these ends, all these clamps or part running being provided for clamping the cable between them by rigidly locking it in position when the two jaws are applied against each other.
L'usage de telles pinces exige toutefois, pour le montage du câble entre ses supports, une installation relativement lourde, notamment pour assurer préalablement la tension du câble par l'intermédiaire d'une poulie et d'un organe de traction muni d'un dynamomètre, maintenu en tension jusqu'à ce que la pince soit mise en place et fixée au support.The use of such clamps, however, requires, for mounting the cable between its supports, a relatively heavy installation, in particular to ensure beforehand the tension of the cable by means of a pulley and a traction member provided with a dynamometer, kept in tension until the clamp is put in place and fixed to the support.
Ces pinces sont classiques dans la technique et utilisées couramment pour l'immobilisation de câbles
comprenant des conducteurs internes en cuivre ou autre métal, qui peuvent supporter un effort de serrage notable entre les mâchoires de ces pinces, ce qui n'est pas le cas lorsque le câble considéré contient des fibres optiques pour lesquelles les efforts de serrage et de traction sont notablement plus limités.These clamps are conventional in the art and commonly used for immobilizing cables comprising internal conductors of copper or other metal, which can withstand a significant clamping force between the jaws of these clamps, which is not the case when the cable considered contains optical fibers for which the clamping and tensile forces are notably more limited.
En outre, le coût de ces pinces est relativement élevé ; surtout leur mise en place est longue, plusieurs interventions successives sur chaque poteau étant nécessaires pour l'accrochage de la poulie et de la pince, le montage du câble et le réglage de tension, ce dernier étant réalisé par des moyens qui sont indépendants de la pince elle-même et qui sont mis en oeuvre lorsque la pince est desserrée, la fermeture des mâchoires n'étant commandée qu'une fois la tension souhaitée obtenue et conservée jusqu'à ce que la pince immobilise le câble.In addition, the cost of these pliers is relatively high; especially their installation is long, several successive interventions on each post being necessary for the attachment of the pulley and the clamp, the cable assembly and the tension adjustment, the latter being carried out by means which are independent of the clamp itself and which are implemented when the clamp is loosened, the closing of the jaws being controlled only once the desired tension is obtained and maintained until the clamp immobilizes the cable.
La présente invention est relative à une pince d'attache pour câble aérien, qui soit polyvalente, c'est-à- dire qui puisse être utilisée aussi bien avec un câble à conducteurs métalliques qu'à fibres optiques, qui présente une grande facilité pour sa mise en place effectuée très rapidement et qui permette un réglage de la tension du câble par la pince elle-même.The present invention relates to an aerial cable clamp, which is versatile, that is to say which can be used both with a metal conductor cable and optical fibers, which has great ease for its installation carried out very quickly and which allows adjustment of the cable tension by the clamp itself.
L'invention vise également une pince de ce genre, qui puisse être utilisée, aussi bien en bout de ligne comme pince d'arrêt, qu'en partie courante pour soutenir et immobiliser le câble par rapport à son support, en évitant ainsi d'avoir recours à deux types de pinces différents, comme dans l'état de la technique.The invention also relates to a clamp of this kind, which can be used, both at the end of the line as a stop clamp, as well as in part to support and immobilize the cable relative to its support, thus avoiding use two different types of pliers, as in the prior art.
Notamment, la pince considérée comporte un boîtier externe présentant un alésage de traversée du câble et des
moyens pour exercer sur ce câble un effort de traction contrôlé et réglable vis-à-vis du boîtier.In particular, the clamp considered comprises an external housing having a bore for crossing the cable and means for exerting on this cable a controlled and adjustable tensile force with respect to the housing.
Dans une première forme de réalisation, cette pince se caractérise en ce que le boîtier comprend intérieurement un manchon creux avec un passage interne de forme générale cylindrique, apte à recevoir le câble s •étendant axiale ent dans le manchon en prise avec la surface externe du câble, lequel présente extérieurement des annelures en relief, s 'étendant avec une configuration hélicoïdale selon la direction de l'axe longitudinal du câble, le manchon creux étant constitué par un écrou, en deux parties s 'adaptant l'une à l'autre autour du câble et présentant un filetage interne coopérant avec les annelures de la gaine, l'écrou étant prolongé à l'extérieur du boîtier par une tête, l'immobilisant en translation sans empêcher sa commande en rotation, de manière à pouvoir exercer sur la gaine l'effort de traction souhaité.In a first embodiment, this grip is characterized in that the housing internally comprises a hollow sleeve with an internal passage of generally cylindrical shape adapted to receive the cable s • extending axial ent in the sleeve in engagement with the outer surface of cable, which has externally raised rings, extending with a helical configuration in the direction of the longitudinal axis of the cable, the hollow sleeve consisting of a nut, in two parts adapting to one another around the cable and having an internal thread cooperating with the rings of the sheath, the nut being extended outside the housing by a head, immobilizing it in translation without preventing it from being rotated, so as to be able to exert on the sheath the desired tensile force.
De préférence et dans cette forme de réalisation, le boîtier comporte, à l'extrémité de l'alésage de traversée du câble, un écrou complémentaire de maintien axial de ce câble.Preferably and in this embodiment, the housing comprises, at the end of the cable-through bore, a complementary nut for axially maintaining this cable.
Dans une autre forme de réalisation, adaptée à un câble comportant extérieurement des annelures en relief voisines, s'étendant dans des plans parallèles, perpendiculaires à l'axe longitudinal du câble, la pince se caractérise en ce que les annelures sont directement en prise à l'intérieur du boîtier avec le filetage hélicoïdal d'une vis sans fin, montée libre en rotation à l'intérieur du boîtier et s 'étendant parallèlement à l'axe du câble, le boîtier étant constitué de deux parties séparables, s' emboîtant mutuellement l'une par rapport à l'autre à l'aide de moyens de fixation temporaires.
Dans ce cas, les moyens de fixation sont avantageusement constitués par des languettes souples munies d'une extrémité en forme de crochet, portées par l'une des parties du boîtier et aptes à s'engager dans des logements de réception prévus dans l'autre partie, ces logements comportant des portées d'immobilisation pour le crochet des languettes s'engageant derrière ces portées lorsque les deux parties du boîtier sont emboîtées.In another embodiment, adapted to a cable having externally raised rings in relief, extending in parallel planes, perpendicular to the longitudinal axis of the cable, the clamp is characterized in that the rings are directly engaged the interior of the housing with the helical thread of an endless screw, mounted to rotate freely inside the housing and extending parallel to the axis of the cable, the housing consisting of two separable parts, interlocking mutually with respect to each other using temporary fixing means. In this case, the fixing means are advantageously constituted by flexible tongues provided with a hook-shaped end, carried by one of the parts of the housing and capable of engaging in receiving housings provided in the other. part, these housings comprising immobilization spans for the hook of the tabs engaging behind these spans when the two parts of the housing are fitted.
La pince ainsi réalisée présente les avantages déjà mentionnés ; en outre, elle peut être mise en oeuvre quelle que soit la nature du câble utilisé et en particulier la structure de la gaine externe de ce câble, qui peut être lisse ou présenter une surface rugueuse, ce qui dans ce dernier cas améliore son ancrage vis-à-vis de la surface interne des deux pièces à profil extérieur conique, logées dans le manchon.The clamp thus produced has the advantages already mentioned; in addition, it can be implemented whatever the nature of the cable used and in particular the structure of the outer sheath of this cable, which can be smooth or have a rough surface, which in the latter case improves its screw anchoring -in relation to the internal surface of the two parts with conical external profile, housed in the sleeve.
D'autres caractéristiques d'une pince d'attache établie conformément à l'invention, apparaîtront encore à travers la description qui suit de plusieurs exemples de réalisation, donnés à titre indicatif et non limitatif, en référence aux dessins annexés sur lesquels :Other characteristics of an attachment clamp established in accordance with the invention will become more apparent from the following description of several exemplary embodiments, given by way of non-limiting example, with reference to the appended drawings in which:
- La Figure 1 est un schéma de principe, illustrant le montage d'un câble de télécommunications entre deux supports verticaux quelconques.- Figure 1 is a block diagram, illustrating the mounting of a telecommunications cable between any two vertical supports.
- La Figure 2 est une vue en coupe transversale d'une pince d'attache conforme à l'invention.- Figure 2 is a cross-sectional view of an attachment clamp according to the invention.
- La Figure 3 est une autre vue en coupe, à plus faible échelle, de la pince selon la Figure 2 par un plan perpendiculaire à celle-ci.
- La Figure 4 illustre les diverses parties de la pince en vue éclatée, permettant de mieux expliciter la manière dont est réalisé leur montage.- Figure 3 is another sectional view, on a smaller scale, of the clamp according to Figure 2 by a plane perpendicular thereto. - Figure 4 illustrates the various parts of the clamp in exploded view, to better explain the way in which their assembly is carried out.
- La Figure 5 est une vue en coupe illustrant schématiquement une variante de réalisation, avec un câble dont la gaine comporte des annelures en saillie externe s 'enroulant hélicoïdalement selon la direction de l'axe longitudinal du câble.- Figure 5 is a sectional view schematically illustrating an alternative embodiment, with a cable, the sheath of which has external projecting rings wound helically along the direction of the longitudinal axis of the cable.
- La Figure 6 illustre une autre variante où la gaine du câble comporte des annelures droites, dans des plans parallèles, perpendiculaires à l'axe longitudinal du câble.- Figure 6 illustrates another variant where the cable sheath has straight grooves, in parallel planes, perpendicular to the longitudinal axis of the cable.
Sur la Figure l, la référence 1 désigne de façon générale un câble de télécommunications, à conducteurs métalliques ou de préférence à fibres optiques, ce câble étant monté en "aérien" entre deux supports verticaux, respectivement 2 et 3, sur lesquels les extrémités de ce câble sont immobilisées par l'intermédiaire de pinces d'attache et de réglage de tension, conformes à l'invention. Bien entendu, le câble peut se prolonger au- delà de ses supports 2 et 3, ceux-ci occupant selon le cas des positions intermédiaires aussi bien que terminales.In FIG. 1, the reference 1 generally designates a telecommunications cable, with metallic conductors or preferably with optical fibers, this cable being mounted "overhead" between two vertical supports, respectively 2 and 3, on which the ends of this cable is immobilized by means of clamps and tension adjustment, according to the invention. Of course, the cable can extend beyond its supports 2 and 3, these occupying, as the case may be, intermediate as well as terminal positions.
Les Figures 2 et 3 illustrent avec plus de détails la structure de la pince d'attache 4.Figures 2 and 3 illustrate in more detail the structure of the attachment clamp 4.
Celle-ci comporte principalement un boîtier 5, avantageusement réalisé en deux parties 6 et 7, prévues pour s'emboîter mutuellement l'une avec l'autre. La partie 6 comporte un lamage interne 8 pour le montage d'une vis, permettant d'immobiliser le boîtier contre le support 2, ce mode de fixation n'ayant en lui-même aucun caractère limitatif, le boîtier 5 pouvant également comporter dans une bride latérale 10 de sa partie 6 des perçages 11 pour
le passage de goujons de maintien ou autres. Ces perçages servent notamment pour l'immobilisation du boîtier sur un support, lorsque la pince 4 est utilisée comme pince d' arrêt.This mainly comprises a housing 5, advantageously made in two parts 6 and 7, designed to fit into each other. Part 6 has an internal countersink 8 for mounting a screw, making it possible to immobilize the housing against the support 2, this method of fixing having no limiting nature in itself, the housing 5 also being able to include in a lateral flange 10 of its part 6 of the holes 11 for the passage of holding studs or the like. These holes are used in particular for immobilizing the housing on a support, when the clamp 4 is used as a stop clamp.
La seconde partie 7 du boîtier 5 présente avantageusement, dans sa face dirigée vers la première partie 6, des languettes souples 12 terminées chacune par un crochet 13 , ces languettes étant prévues pour s'engager dans des logements 14 de la partie 6, en amenant les crochets 13 derrière une portée d'appui 15 de ces logements, les deux parties du boîtier s 'assemblant ainsi mutuellement à la manière d'un clip.The second part 7 of the housing 5 advantageously has, in its face directed towards the first part 6, flexible tongues 12 each terminated by a hook 13, these tongues being provided for engaging in housings 14 of the part 6, bringing the hooks 13 behind a bearing surface 15 of these housings, the two parts of the housing thus assembling each other in the manner of a clip.
Les deux parties 6 et 7 du boîtier 5 sont par ailleurs fermées latéralement (Figure 2) par des flasques parallèles et opposés, respectivement 16 et 17, en délimitant intérieurement une cavité 18. Les flasques 16 et 17 comportent de plus des ouvertures 19 et 20, en regard l'une de l'autre et formant à travers le boîtier 5 un alésage transversal 21 dans lequel s'engage le câble 1.The two parts 6 and 7 of the housing 5 are moreover closed laterally (FIG. 2) by parallel and opposite flanges, respectively 16 and 17, internally delimiting a cavity 18. The flanges 16 and 17 also have openings 19 and 20 , facing one another and forming through the housing 5 a transverse bore 21 in which the cable 1 engages.
Conformément à l'invention, ce câble est solidarisé d'un manchon d'immobilisation 22, celui-ci étant de préférence constitué de deux parties 23 et 24 (Figure 4) , articulées entre elles pour se rabattre autour du câble 1 en se solidarisant par l'intermédiaire d'une languette de verrouillage 26 et d'un trou borgne de blocage 27 où s'engage cette languette.According to the invention, this cable is secured to an immobilizing sleeve 22, the latter preferably being made up of two parts 23 and 24 (Figure 4), hinged together to fold around the cable 1 while being secured by means of a locking tongue 26 and a blind blocking hole 27 where this tongue engages.
Les deux parties 23 et 24 du manchon 22 présentent intérieurement un logement interne 28 qui comporte un profil conique et qui reçoit une mâchoire de serrage 29 entourant le câble 1.
Cette mâchoire présente également un profil externe conique, lui permettant de venir s'adapter dans le logement 28 du manchon, et est, comme ce dernier, formée de deux parties, respectivement 30 et 31 (Figure 4) , aménagées de manière à venir entourer et à serrer étroitement par l'extérieur la gaine du câble 1, celui-ci étant dans ces conditions parfaitement immobilisé dans le manchon 22, en particulier lorsque s'exerce sur ce câble un effort de traction selon sa direction longitudinale.The two parts 23 and 24 of the sleeve 22 have an internal housing 28 which has a conical profile and which receives a clamping jaw 29 surrounding the cable 1. This jaw also has a conical external profile, allowing it to come to fit in the housing 28 of the sleeve, and is, like the latter, formed of two parts, respectively 30 and 31 (Figure 4), arranged so as to come to surround and tightening tightly from the outside the sheath of the cable 1, the latter being in these conditions perfectly immobilized in the sleeve 22, in particular when a tensile force is exerted on its cable in its longitudinal direction.
Dans sa surface externe, le manchon 22 comporte enfin une denture 32, en forme de crémaillère, dont les dents successives sont prévues pour coopérer avec un filetage externe 33 d'une vis sans fin 34, montée à l'intérieur du boîtier 5 dans la cavité 18 de celui-ci, en s ' étendant parallèlement à l'axe du manchon 22 et du câble 1 immobilisé dans celui-ci par la mâchoire 29.In its external surface, the sleeve 22 finally comprises a toothing 32, in the form of a rack, the successive teeth of which are provided to cooperate with an external thread 33 of an endless screw 34, mounted inside the housing 5 in the cavity 18 thereof, extending parallel to the axis of the sleeve 22 and of the cable 1 immobilized therein by the jaw 29.
La vis sans fin 34 est montée libre en rotation à l'intérieur du boîtier 5 par l'intermédiaire de deux tourillons d'extrémité 35 et 36, respectivement supportés par des paliers 37 et 38 prévus dans les flasques latéraux 16 et 17. Le tourillon 36 se prolonge, à l'extérieur du boîtier 5, par une tête de commande 39, ici en forme d'écrou à six pans, celle-ci étant adaptée à coopérer avec une clé dynamométrique 40 ou tout autre système d'entraînement à limiteur de couple, permettant de déplacer la tête 39 et de provoquer à la demande la rotation de la vis sans fin 34.The endless screw 34 is mounted to rotate freely inside the housing 5 by means of two end journals 35 and 36, respectively supported by bearings 37 and 38 provided in the lateral flanges 16 and 17. The journal 36 is extended, outside the housing 5, by a control head 39, here in the form of a hexagon nut, this being adapted to cooperate with a torque wrench 40 or any other drive system with limiter of torque, making it possible to move the head 39 and to cause the rotation of the worm screw 34 on demand.
Cette vis entraîne à son tour, par l'intermédiaire de la denture 32 du manchon 22, le déplacement de ce dernier dans l'alésage 21, en exerçant sur le câble 1 un effort de traction approprié permettant de régler en permanence sa tension entre ses supports 2 et 3 (Figure 1) .
Dans la variante illustrée sur la Figure 5, on retrouve le boîtier 5 recevant le câble 1 dans son alésage transversal 31. Toutefois dans ce cas, le câble n'est plus lisse extérieurement mais comporte une gaine 50 dont le profil externe comprend des annelures 51 qui, dans l'exemple représenté, s'étendent en hélice autour du câble. A l'intérieur du boîtier 5, dans la cavité 18, est monté un écrou 52 formé de deux parties, respectivement 53 et 54, s 'adaptant l'une à l'autre et qui présentent intérieurement un filetage 55 de même pas que l'hélice constituée par les annelures 51 de la gaine 50, lesquelles viennent coopérer avec ce filetage de la façon illustrée.This screw in turn causes, by means of the toothing 32 of the sleeve 22, the displacement of the latter in the bore 21, by exerting on the cable 1 an appropriate tensile force making it possible to permanently adjust its tension between its supports 2 and 3 (Figure 1). In the variant illustrated in Figure 5, there is the housing 5 receiving the cable 1 in its transverse bore 31. However in this case, the cable is no longer smooth on the outside but has a sheath 50 whose external profile includes grooves 51 which, in the example shown, extend in a helix around the cable. Inside the housing 5, in the cavity 18, is mounted a nut 52 formed of two parts, respectively 53 and 54, adapting to each other and which internally have a thread 55 of the same pitch as the 'propeller formed by the rings 51 of the sheath 50, which cooperate with this thread as illustrated.
Les deux parties 53 et 54 de 1 'écrou se prolongent extérieurement par une tête 56, immobilisant cet écrou en translation mais en le laissant libre de tourner sur lui- même par rapport à la gaine 50, en étant entraîné par un moyen de commande (non représenté) , ayant le même effet que la clé dynamométrique 40, représentée sur la Figure 2.The two parts 53 and 54 of the nut are extended externally by a head 56, immobilizing this nut in translation but leaving it free to turn on itself relative to the sheath 50, by being driven by a control means ( not shown), having the same effect as the torque wrench 40, shown in Figure 2.
Un second écrou 57 peut être monté et immobilisé sur l'extrémité opposée du boîtier 5, au droit de l'ouverture 19 de celui-ci, cet écrou comportant de même un filetage interne 58, coopérant avec les annelures 51 de la gaine, pour maintenir celle-ci en position axiale indépendamment du premier écrou 52.A second nut 57 can be mounted and immobilized on the opposite end of the housing 5, in line with the opening 19 of the latter, this nut likewise comprising an internal thread 58, cooperating with the rings 51 of the sheath, for maintain the latter in an axial position independently of the first nut 52.
La Figure 6 illustre une autre variante dans laquelle la gaine extérieure du câble 1 comporte des annelures 59 qui, au lieu de s'enrouler hélicoïdalement autour du câble, sont droites et s'étendent dans des plans parallèles voisins, perpendiculairement à l'axe du câble.FIG. 6 illustrates another variant in which the outer sheath of the cable 1 has rings 59 which, instead of being wound helically around the cable, are straight and extend in neighboring parallel planes, perpendicular to the axis of the cable.
Dans cette variante, le boîtier 5 présente une configuration générale voisine de celle illustrée sur laIn this variant, the housing 5 has a general configuration close to that illustrated on the
Figure 2, avec une vis sans fin 34' dont le filetage
hélicoïdal 33' est en prise directe avec les annelures 59 du câble qui traverse le boîtier dans le passage axial prévu dans le boîtier entre les ouvertures 19 et 20 de celui-ci. La vis 34' comporte, comme dans l'exemple précédent, des tourillons 35' et 36' supportés dans des paliers 37' et 38*. Une tête de commande 39' coopère avec une clé de manoeuvre 40'.Figure 2, with a 34 'worm screw whose thread helical 33 'is in direct engagement with the rings 59 of the cable which passes through the housing in the axial passage provided in the housing between the openings 19 and 20 thereof. The screw 34 'comprises, as in the previous example, pins 35' and 36 'supported in bearings 37' and 38 *. A control head 39 'cooperates with an operating key 40'.
On réalise ainsi une pince d'attache pour câble aérien de conception très simple et dont la mise en oeuvre est particulièrement efficace, à la fois pour immobiliser les extrémités de ce câble sur des supports appropriés, mais également pour en ajuster la tension, quelle que soit la structure du câble et en particulier la forme ou la nature de sa gaine extérieure.This produces an attachment clip for overhead cable of very simple design and whose implementation is particularly effective, both to immobilize the ends of this cable on appropriate supports, but also to adjust the tension, whatever either the structure of the cable and in particular the shape or nature of its outer sheath.
Bien entendu, il va de soi que l'invention ne se limite pas à l'exemple de réalisation plus spécialement décrit en référence aux dessins annexés ; elle en embrasse au contraire toutes les variantes.
Of course, it goes without saying that the invention is not limited to the embodiment more specifically described with reference to the accompanying drawings; on the contrary, it embraces all its variants.
Claims
REVENDICATIONS
1 - Pince d'attache et de réglage de tension, notamment pour câble aérien de télécommunications, comportant un boîtier externe (5) présentant un alésage de traversée (21) du câble (1) et des moyens (22, 29, 34, 52) pour exercer sur ce câble un effort de traction contrôlé et réglable vis-à-vis du boîtier, caractérisé en ce que ce boîtier comprend intérieurement un manchon creux (22) avec un passage interne de forme générale cylindrique, apte à recevoir le câble s'étendant axialement dans le manchon en prise avec la surface externe du câble, lequel présente extérieurement des annelures en relief (51) , s'étendant avec une configuration hélicoïdale selon la direction de l'axe longitudinal du câble (1) , le manchon creux (22) étant constitué par un écrou (52), en deux parties (53, 54) s 'adaptant l'une à l'autre autour du câble et présentant un filetage interne (55) coopérant avec les annelures de la gaine, l'écrou étant prolongé à l'extérieur du boîtier (5) par une tête (56), l'immobilisant en translation sans empêcher sa commande en rotation, de manière à pouvoir exercer sur la gaine l'effort de traction souhaité.1 - Clamp for attaching and adjusting the tension, in particular for overhead telecommunications cable, comprising an external housing (5) having a through hole (21) in the cable (1) and means (22, 29, 34, 52 ) to exert on this cable a controlled and adjustable tensile force with respect to the housing, characterized in that this housing internally comprises a hollow sleeve (22) with an internal passage of generally cylindrical shape, capable of receiving the cable s extending axially in the sleeve in engagement with the external surface of the cable, which has externally raised rings (51), extending in a helical configuration in the direction of the longitudinal axis of the cable (1), the hollow sleeve (22) being constituted by a nut (52), in two parts (53, 54) adapting to each other around the cable and having an internal thread (55) cooperating with the corrugations of the sheath, l '' nut being extended outside the housing (5) by a head (56), immobilizing it in translation without preventing its rotational control, so as to be able to exert on the sheath the desired tensile force.
2 - Pince selon la revendication 1, caractérisée en ce que le boîtier (5) comporte, à l'extrémité de l'alésage de traversée (21) du câble (1) , un écrou complémentaire (57) de maintien axial de ce câble.2 - Pliers according to claim 1, characterized in that the housing (5) comprises, at the end of the through bore (21) of the cable (1), a complementary nut (57) for axial maintenance of this cable .
3 - Pince d'attache et de réglage de tension, notamment pour câble aérien de télécommunications, comportant un boîtier externe (5) présentant un alésage de traversée (21) du câble (1) et des moyens (22, 29, 34, 52) pour exercer sur ce câble un effort de traction contrôlé et réglable vis-à-vis du boîtier, adaptée à un câble comportant extérieurement des annelures en relief (59) voisines, s 'étendant dans des plans parallèles,
perpendiculaires à l'axe longitudinal du câble (1) , caractérisée en ce que les annelures sont directement en prise à 1 ' intérieur du boîtier avec le filetage hélicoïdal (33') d'une vis sans fin (34'), montée libre en rotation à l'intérieur du boîtier (5) et s •étendant parallèlement à l'axe du câble (1) , le boîtier (5) étant constitué de deux parties séparables (23, 24), s 'emboîtant mutuellement l'une par rapport à l'autre à l'aide de moyens de fixation temporaires (26, 27) .3 - Clamp for clamping and adjusting the tension, in particular for overhead telecommunications cable, comprising an external housing (5) having a through hole (21) in the cable (1) and means (22, 29, 34, 52 ) to exert on this cable a controlled and adjustable tensile force with respect to the housing, suitable for a cable externally having adjacent raised rings (59), extending in parallel planes, perpendicular to the longitudinal axis of the cable (1), characterized in that the corrugations are directly engaged inside the housing with the helical thread (33 ') of an endless screw (34'), mounted freely in rotation inside the housing (5) and s • extending parallel to the axis of the cable (1), the housing (5) consisting of two separable parts (23, 24), mutually interlocking one by relative to each other using temporary fastening means (26, 27).
4 - Pince selon la revendication 3 , caractérisée en ce que les moyens de fixation sont constitués par des languettes souples (12) munies d'une extrémité en forme de crochet (13) , portées par l'une des parties (16, 17) du boîtier (5) et aptes à s'engager dans des logements de réception (14) prévus dans l'autre partie, ces logements comportant des portées d'immobilisation (15) pour le crochet des languettes s *engageant derrière ces portées lorsque les deux parties du boîtier sont emboîtées.
4 - Clamp according to claim 3, characterized in that the fixing means are constituted by flexible tongues (12) provided with a hook-shaped end (13), carried by one of the parts (16, 17) of the housing (5) and able to engage in receiving housings (14) provided in the other part, these housings comprising immobilizing spans (15) for the hook of the tongues engaging behind these spans when the two parts of the housing are fitted.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9405637A FR2719719B1 (en) | 1994-05-06 | 1994-05-06 | Clamp for overhead telecommunications cable. |
FR94/05637 | 1994-05-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995031027A1 true WO1995031027A1 (en) | 1995-11-16 |
Family
ID=9462998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1995/000581 WO1995031027A1 (en) | 1994-05-06 | 1995-05-04 | Fastening clamp for an overhead telecommunications cable |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2719719B1 (en) |
WO (1) | WO1995031027A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2312563A (en) * | 1996-04-22 | 1997-10-29 | Andrew Corp | Transmission line hanger |
US6079673A (en) * | 1999-04-01 | 2000-06-27 | Andrew Corporation | Transmission line hanger |
ITMI20111435A1 (en) * | 2011-07-29 | 2013-01-30 | Cembre Spa | DEVICE FOR UNLOCKING AND ADJUSTING THE ANCHORAGE OF AN ELECTRIC LINE, IN PARTICULAR RAILWAY. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1978261A (en) * | 1933-06-06 | 1934-10-23 | William M Hanlon | Wire line clamp |
DE668040C (en) * | 1938-11-25 | Kurt Vogel | Device for tensioning electrical overhead lines | |
FR2379920A1 (en) * | 1977-02-08 | 1978-09-01 | Dervaux Ets | Anchor clamp for figure=of=eight type self supporting aerial cable - uses tapered body housing sectors of serrated spring assisted clamping jaws |
-
1994
- 1994-05-06 FR FR9405637A patent/FR2719719B1/en not_active Expired - Fee Related
-
1995
- 1995-05-04 WO PCT/FR1995/000581 patent/WO1995031027A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE668040C (en) * | 1938-11-25 | Kurt Vogel | Device for tensioning electrical overhead lines | |
US1978261A (en) * | 1933-06-06 | 1934-10-23 | William M Hanlon | Wire line clamp |
FR2379920A1 (en) * | 1977-02-08 | 1978-09-01 | Dervaux Ets | Anchor clamp for figure=of=eight type self supporting aerial cable - uses tapered body housing sectors of serrated spring assisted clamping jaws |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2312563A (en) * | 1996-04-22 | 1997-10-29 | Andrew Corp | Transmission line hanger |
GB2312563B (en) * | 1996-04-22 | 2000-04-12 | Andrew Corp | Transmission line hanger,a method of attaching the hanger and the resulting assembly |
US6079673A (en) * | 1999-04-01 | 2000-06-27 | Andrew Corporation | Transmission line hanger |
ITMI20111435A1 (en) * | 2011-07-29 | 2013-01-30 | Cembre Spa | DEVICE FOR UNLOCKING AND ADJUSTING THE ANCHORAGE OF AN ELECTRIC LINE, IN PARTICULAR RAILWAY. |
Also Published As
Publication number | Publication date |
---|---|
FR2719719B1 (en) | 1996-07-12 |
FR2719719A1 (en) | 1995-11-10 |
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