EP0919513A1 - Device for maintaining the tension in a cable - Google Patents

Device for maintaining the tension in a cable Download PDF

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Publication number
EP0919513A1
EP0919513A1 EP98420193A EP98420193A EP0919513A1 EP 0919513 A1 EP0919513 A1 EP 0919513A1 EP 98420193 A EP98420193 A EP 98420193A EP 98420193 A EP98420193 A EP 98420193A EP 0919513 A1 EP0919513 A1 EP 0919513A1
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EP
European Patent Office
Prior art keywords
cable
keeping
drum
under tension
pressure rollers
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Granted
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EP98420193A
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German (de)
French (fr)
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EP0919513B1 (en
Inventor
Gérard Piron
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Reel SAS
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Reel SAS
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Publication of EP0919513A1 publication Critical patent/EP0919513A1/en
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Publication of EP0919513B1 publication Critical patent/EP0919513B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control

Definitions

  • the invention relates to a device intended to keep a cable under tension, in particular during its winding, and especially on a winch drum.
  • the apparatus and devices used generally consist of of one or more cables, wound on a drum, said drum being rotated at by means of a motor, generally electric.
  • the drum is grooved, that is to say that it has a groove in diameter substantially equivalent to the diameter of the cable, produced at its periphery in a spiral, and that the winch is equipped with a cutting device, that is to say a device moving parallel to the axis of rotation of the drum as the winding of the cable, in a known manner, to achieve a uniform winding, the insufficient tension to precisely accommodate in said groove the cable intended to be there received or, in the case of multilayer windings, to ensure positioning regular cable corresponding to the correct pitch.
  • a cutting device that is to say a device moving parallel to the axis of rotation of the drum as the winding of the cable, in a known manner, to achieve a uniform winding, the insufficient tension to precisely accommodate in said groove the cable intended to be there received or, in the case of multilayer windings, to ensure positioning regular cable corresponding to the correct pitch.
  • the object of the invention is to propose a device capable of ensuring the tension of the cable. during its winding by the creation of a resistant force, in the same direction as the tension exerted by the drum on the cable, but in the opposite direction.
  • This force is of much lower intensity than the nominal pulling capacity of the cable. It is subjected to this force continuously, including during the lateral movement of the cable in order to achieve a uniform distribution of the first layer or upper layers, especially when a cutting member is used.
  • the device according to the invention is intended to generate a force resistant, upstream of the winch or lifting device, and whose intensity is adjustable by the implementation of a brake.
  • the device according to the invention is mounted on a cutting member and movable in synchronism with it, such so as to continuously generate the resistive force, whatever the lateral positioning of the cable relative to the drum at which it is intended to to be rolled up.
  • the rollers comprise several sets, coupled together and are connected to the braking member directly or via a bevel gear.
  • the braking member is constituted by a system hydraulic consisting of one or more gear pumps directly coupled to the axes of the rollers or on the intermediate transmission member, constituted for example by a bevel gear.
  • These pumps supply a hydraulic circuit, one of the branches of which is provided with a adjustable throttle, ensuring flow limitation, and therefore, allow generation of the cable retaining force.
  • This circuit branch can be short-circuited by means of a solenoid valve, in the event that the creation of tension is not necessary or, during the course of the cable.
  • the braking member is constituted by a system of powder couplers, connected directly or indirectly to the axes of the pressure rollers, said couplers being electrically supplied with current of suitable intensity in order to generate an adequate resistive torque, function of the tension that we want to create at the cable level.
  • FIG. 1 a top view of the device according to the invention.
  • This device is advantageously mounted on the cutting body (17) of a winch, and more generally of a lifting or hauling device with cable (s). So known and as already specified, such a cutting member is intended to move parallel to the generator of the drum at which it is intended to come and wind the cable, and thus sweep the entire length of said drum, in order to achieve a regular winding of the cable at the drum.
  • the cable, bearing the reference (1) is oriented, and centered relative to the member intended to exert on it a resistant force opposing the tension exerted by the drum, in the vertical plane, and horizontal, by means of input rollers, respectively (2) and (3), mounted free in rotation on respective axes (4) and (5).
  • the cable (1) is taken up at the outlet of the device according to the invention by a set also of two vertical (6) and horizontal (7) rollers, also mounted free in rotation, and intended to ensure the continuity of the direction given to the cable in direction of the drum, called to receive it.
  • the device described is intended for exert a resistant force on the cable, tending to oppose the tension force exerted by the drum on it.
  • the cable is received at pressure devices, and typically pressure rollers (8) and (9), mounted in pairs, as can be observe it in FIG. 1.
  • These pressure rollers (8, 9) are positioned in the same plane and have a common tangency zone, as can be observed, in particular in FIG. 3.
  • These pressure rollers have a groove (10) of compatible diameter with the diameter of the cable (1), so as to present the largest contact surface possible when said cable (1) is received between the two rollers (8) of the same torque.
  • rollers are made of materials with a relatively high coefficient of friction, such as polyurethane example to limit the risk of slipping and therefore increase the adhesion of said rollers at the level of the cable, therefore the effectiveness of the braking member associated with the device according to the invention.
  • the pressure rollers (8) and (9) are capable of rotating relative to of these respective parallels, and said these of the same pair (8) (9) being coupled to a synchronization axis (11), also parallel to the axes of the rollers (8) and (9) by means chains (12), meshing in pinions (13) formed at the axes respective (see Figure 3).
  • rollers (8) and (9), by this coupling, can only rotate at the same speed.
  • the axis (11) is coupled with an angle deflection device (14) (FIG. 3), intended for transform the vertical direction of the axis (11) into a horizontal direction according to a new axis (15).
  • an angle deflection device (14) FIG. 3
  • such couplers are electrically powered, so as to generate an electrical torque at the level of the constituent discs of said couplers which, depending on the direction of the current, are capable of ensuring a resistant torque on the axis (15) and therefore, on the axis (11), therefore consequently, on the rollers (8) and (9).
  • a fan (not shown) is associated with each of them to ensure its cooling.
  • each of these (11) is coupled to the by means of a gear with one or more pumps.
  • These pumps supply a circuit hydraulic, with a throttle adjustable in diameter, ensuring flow limitation, and therefore exerting an obstacle to the free rotation of the pump gears, and therefore axes (11), therefore, as a result of the pressure rollers (8) and (9), so generating the resistive force at the level of the cable (1) opposing the tensile force exerted by the drum.
  • the circuit also comprises a short-circuit branch supplied by means of a solenoid valve, when the creation of this resistance force is not necessary, i.e. in case of winding under load, or unwinding of the cable.
  • the active branch of hydraulic systems is equipped with a radiator for evacuating the developed heat energy, this radiator being associated with a fan calibrated accordingly.
  • This device is particularly simple to implement and to realize and can be very easily mount on the slicing device which associates in a traditional way winches.

Abstract

Ce dispositif de maintien sous tension d'un câble, notamment lors de son enroulement sur le tambour d'un appareil de levage ou de halage, comprend au moins un jeu de deux galets presseurs (8, 9), situés dans un même plan et montés de manière quasi-tangentielle, et dont les gorges respectives sont destinées à recevoir le câble au niveau de leur point de tangence ou de quasi-tangence commun, lesdits galets étant couplés directement ou indirectement à un organe de freinage (15, 16), propre à engendrer au niveau du câble, une force résistante, réglable en intensité, s'opposant à la tension exercée par le tambour du dispositif de levage ou de halage au niveau duquel il est mis en place. <IMAGE>This device for keeping a cable under tension, in particular when it is wound on the drum of a lifting or hauling device, comprises at least one set of two pressure rollers (8, 9), located in the same plane and mounted quasi-tangentially, and the respective grooves of which are intended to receive the cable at their point of common tangency or quasi-tangency, said rollers being directly or indirectly coupled to a braking member (15, 16), suitable for generating at the cable, a resistant force, adjustable in intensity, opposing the tension exerted by the drum of the lifting or hauling device at which it is put in place. <IMAGE>

Description

L'invention concerne un dispositif destiné à maintenir sous tension un câble, notamment lors de son enroulement, et tout particulièrement sur un tambour de treuil.The invention relates to a device intended to keep a cable under tension, in particular during its winding, and especially on a winch drum.

Elle concerne donc le domaine des appareils de levage et de halage.It therefore relates to the field of lifting and hauling devices.

Dans cette industrie, les appareils et dispositifs mis en oeuvre sont généralement constitués de un ou plusieurs câbles, enroulés sur un tambour, ledit tambour étant mû en rotation au moyen d'un moteur, généralement électrique.In this industry, the apparatus and devices used generally consist of of one or more cables, wound on a drum, said drum being rotated at by means of a motor, generally electric.

Afin de réduire l'encombrement de l'enroulement ainsi constitué, ou de favoriser le déroulement du ou des câbles, il est nécessaire de veiller à la qualité de l'enroulement sur ledit tambour. Or, pour aboutir à des enroulements uniformes, qu'ils soient monocouches ou multicouches, il est nécessaire d'appliquer une certaine tension sur le câble. Si certes, dans le cadre des appareils de levage, cette tension est assurée par le poids des organes de levage, notamment le câble lui-même, un moufle, un crochet voire par la charge suspendue elle-même, tel n'est pas le cas lorsque le treuil est utilisé en halage. En effet, quand bien même le tambour est rainuré, c'est à dire qu'il présente une gorge de diamètre sensiblement équivalent au diamètre du câble, réalisé à sa périphérie selon une spirale, et que le treuil est équipé d'un dispositif de trancanage, c'est à dire d'un dispositif se déplaçant parallèlement à l'axe de rotation du tambour au fur et à mesure de l'enroulement du câble, afin de manière connue, d'aboutir à un enroulement uniforme, la tension est insuffisante pour loger précisément dans ladite gorge le câble destiné à y être reçu ou, dans le cadre des enroulements multicouches, pour assurer un positionnement régulier du câble correpondant au pas convenable.In order to reduce the size of the winding thus formed, or to favor the unwinding of the cable (s), it is necessary to ensure the quality of the winding on said drum. However, to achieve uniform windings, whether they are monolayers or multilayer, it is necessary to apply a certain tension on the cable. If indeed, in the context of lifting devices, this tension is ensured by the weight of the lifting, in particular the cable itself, a block, a hook or even by the load itself suspended, this is not the case when the winch is used for hauling. Indeed, even if the drum is grooved, that is to say that it has a groove in diameter substantially equivalent to the diameter of the cable, produced at its periphery in a spiral, and that the winch is equipped with a cutting device, that is to say a device moving parallel to the axis of rotation of the drum as the winding of the cable, in a known manner, to achieve a uniform winding, the insufficient tension to precisely accommodate in said groove the cable intended to be there received or, in the case of multilayer windings, to ensure positioning regular cable corresponding to the correct pitch.

L'objet de l'invention est de proposer un dispositif propre à assurer la tension du câble lors de son enroulement par la création d'une force résistante, de même direction que la tension exercée par le tambour sur le câble, mais de sens opposé.The object of the invention is to propose a device capable of ensuring the tension of the cable. during its winding by the creation of a resistant force, in the same direction as the tension exerted by the drum on the cable, but in the opposite direction.

Cette force est d'intensité beaucoup plus faible que la capacité de traction nominale du câble. Celui-ci est soumis à cette force de manière continue, y compris lors du déplacement latéral du câble afin d'aboutir à une répartition uniforme de la première couche ou des couches supérieures, notamment lorsqu'un organe de trancanage est utilisé. This force is of much lower intensity than the nominal pulling capacity of the cable. It is subjected to this force continuously, including during the lateral movement of the cable in order to achieve a uniform distribution of the first layer or upper layers, especially when a cutting member is used.

En revanche, elle est supprimée lors d'un enroulement avec tension assurée par exemple lorsque le treuil est utilisé en appareil de levage et qu'il est muni d'une charge minimum résistante, ne serait-ce que par un moufle ou un crochet de levage. De la même manière, cette force est supprimée lors du mouvement de déroulement du câble.On the other hand, it is eliminated during a winding with assured tension for example when the winch is used as a lifting device and is fitted with a minimum load strong, if only with a block or lifting hook. In the same way, this force is eliminated during the unwinding movement of the cable.

Selon l'invention, ce dispositif de maintien sous tension d'un câble, notamment lors de son enroulement comprend au moins un jeu de deux galets presseurs, situés dans un même plan et montés de manière quasi-tangentielle, et dont les gorges respectives sont destinées à recevoir le câble au niveau de leur point de tangence ou de quasi-tangence commun, lesdits galets étant couplés directement ou indirectement à un organe de freinage, propre à engendrer au niveau du câble, une force résistante, réglable en intensité, s'opposant à la tension exercée par le tambour du treuil ou du dispositif de traction au niveau duquel il est mis en place.According to the invention, this device for keeping a cable under tension, in particular during its winding comprises at least one set of two pressure rollers, located in a same plane and mounted almost tangentially, and whose respective grooves are intended to receive the cable at their point of tangency or near-tangency common, said rollers being directly or indirectly coupled to a braking, capable of generating at the cable, a resistant force, adjustable in intensity, opposing the tension exerted by the winch drum or the traction device level of which it is set up.

En d'autres termes, le dispositif conforme à l'invention est destiné à engendrer une force résistante, en amont du treuil ou de l'appareil de levage, et dont l'intensité est réglable par la mise en oeuvre d'un frein.In other words, the device according to the invention is intended to generate a force resistant, upstream of the winch or lifting device, and whose intensity is adjustable by the implementation of a brake.

Selon une forme avantageuse de l'invention, le dispositif conforme à l'invention est monté sur un organe de trancanage et déplaçable en synchronisme avec celui-ci, de telle sorte à ainsi générer de manière continue la force résistante, quel que soit le positionnement latéral du câble par rapport au tambour au niveau duquel il est destiné à être enroulé.According to an advantageous form of the invention, the device according to the invention is mounted on a cutting member and movable in synchronism with it, such so as to continuously generate the resistive force, whatever the lateral positioning of the cable relative to the drum at which it is intended to to be rolled up.

Selon l'invention, les galets comportent plusieurs jeux, couplés entre eux et sont reliés à l'organe de freinage directement ou par l'intermédiaire d'un renvoi d'angle.According to the invention, the rollers comprise several sets, coupled together and are connected to the braking member directly or via a bevel gear.

Selon une première forme de réalisation, l'organe de freinage est constitué par un système hydraulique constitué par une ou plusieurs pompes à engrenages couplées directement sur les axes des galets ou sur l'organe de transmission intermédiaire, constitué par exemple par un renvoi d'angle.According to a first embodiment, the braking member is constituted by a system hydraulic consisting of one or more gear pumps directly coupled to the axes of the rollers or on the intermediate transmission member, constituted for example by a bevel gear.

Ces pompes alimentent un circuit hydraulique, dont l'une des branches est munie d'un étranglement réglable, assurant la limitation du débit, et partant, permettent la génération de l'effort de retenue du câble. These pumps supply a hydraulic circuit, one of the branches of which is provided with a adjustable throttle, ensuring flow limitation, and therefore, allow generation of the cable retaining force.

Cette branche de circuit peut être court-circuitée par l'intermédiaire d'une électrovanne, dans le cas où la création de la tension n'est pas nécessaire ou, lors du déroulement du câble.This circuit branch can be short-circuited by means of a solenoid valve, in the event that the creation of tension is not necessary or, during the course of the cable.

Dans une seconde forme de réalisation de l'invention, l'organe de freinage est constitué par un système de coupleurs à poudre, reliés directement ou indirectement aux axes des galets presseurs, lesdits coupleurs étant alimentés électriquement avec un courant d'intensité adapté afin de générer un couple résistant adéquat, fonction de la tension que l'on souhaite créer au niveau du câble.In a second embodiment of the invention, the braking member is constituted by a system of powder couplers, connected directly or indirectly to the axes of the pressure rollers, said couplers being electrically supplied with current of suitable intensity in order to generate an adequate resistive torque, function of the tension that we want to create at the cable level.

La manière dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exemple de réalisation qui suit donné à titre indicatif et non limitatif, à l'appui des figures annexées.

  • La figure 1 est une vue du dessus du dispositif conforme à l'invention.
  • La figure 2 est une vue latérale partiellement éclatée de la figure 1.
  • La figure 3 est une vue de front, également partiellement éclatée, du dispositif conforme à l'invention.
    • The manner in which the invention can be implemented and the advantages which result therefrom will emerge more clearly from the example of embodiment which follows, given by way of non-limiting example, in support of the appended figures.
  • Figure 1 is a top view of the device according to the invention.
  • Figure 2 is a partially exploded side view of Figure 1.
  • Figure 3 is a front view, also partially exploded, of the device according to the invention.

    • On a représenté sur la figure 1 une vue du dessus du dispositif conforme à l'invention. Ce dispositif est avantageusement monté sur le corps de trancanage (17) d'un treuil, et de manière plus générale d'un dispositif de levage ou de halage à câble(s). De manière connue et ainsi que déjà précisé, un tel organe de trancanage est destiné à se déplacer parallèlement à la génératrice du tambour au niveau duquel est destiné à venir s'enrouler le câble, et à balayer ainsi toute la longueur dudit tambour, afin d'aboutir à un enroulement régulier du câble au niveau du tambour.There is shown in Figure 1 a top view of the device according to the invention. This device is advantageously mounted on the cutting body (17) of a winch, and more generally of a lifting or hauling device with cable (s). So known and as already specified, such a cutting member is intended to move parallel to the generator of the drum at which it is intended to come and wind the cable, and thus sweep the entire length of said drum, in order to achieve a regular winding of the cable at the drum.

    Selon l'invention, le câble, portant la référence (1) est orienté, et centré par rapport à l'organe destiné à exercer sur celui-ci une force résistante s'opposant à la tension exercée par le tambour, selon le plan vertical, et horizontal, au moyen de rouleaux d'entrée, respectivement (2) et (3), montés libres en rotation sur des axes respectifs (4) et (5).According to the invention, the cable, bearing the reference (1) is oriented, and centered relative to the member intended to exert on it a resistant force opposing the tension exerted by the drum, in the vertical plane, and horizontal, by means of input rollers, respectively (2) and (3), mounted free in rotation on respective axes (4) and (5).

    De manière similaire, le câble (1) est repris en sortie du dispositif conforme à l'invention par un jeu également de deux rouleaux verticaux (6) et horizontaux (7), également montés libres en rotation, et destinés à assurer la continuité de la direction donnée au câble en direction du tambour, appelé à le recevoir. Similarly, the cable (1) is taken up at the outlet of the device according to the invention by a set also of two vertical (6) and horizontal (7) rollers, also mounted free in rotation, and intended to ensure the continuity of the direction given to the cable in direction of the drum, called to receive it.

    Selon une caractéristique essentielle de l'invention, le dispositif décrit est destiné à exercer une force résistante sur le câble, tendant à s'opposer à la force de tension exercée par le tambour sur celui-ci. Pour ce faire, le câble est reçu au niveau d'organes presseurs, et typiquement des galets presseurs (8) et (9), montés par couple, tel qu'on peut bien l'observer sur la figure 1. Ces galets presseurs (8, 9) sont positionnés dans un même plan et présentent une zone de tangence commune, tel qu'on peut bien l'observer, notamment sur la figure 3. Ces galets presseurs présentent une gorge (10) de diamètre compatible avec le diamètre du câble (1), de telle sorte à présenter la plus grande surface de contact possible lorsque ledit câble (1) est reçu entre les deux galets (8) d'un même couple. Ces galets sont réalisés en matériaux à coefficient de frottement relativement élevé, tel que par exemple en polyuréthanne pour limiter les risques de glissement et partant, augmenter l'adhérence desdits galets au niveau du câble, donc l'efficacité de l'organe de freinage associé au dispositif conforme à l'invention.According to an essential characteristic of the invention, the device described is intended for exert a resistant force on the cable, tending to oppose the tension force exerted by the drum on it. To do this, the cable is received at pressure devices, and typically pressure rollers (8) and (9), mounted in pairs, as can be observe it in FIG. 1. These pressure rollers (8, 9) are positioned in the same plane and have a common tangency zone, as can be observed, in particular in FIG. 3. These pressure rollers have a groove (10) of compatible diameter with the diameter of the cable (1), so as to present the largest contact surface possible when said cable (1) is received between the two rollers (8) of the same torque. These rollers are made of materials with a relatively high coefficient of friction, such as polyurethane example to limit the risk of slipping and therefore increase the adhesion of said rollers at the level of the cable, therefore the effectiveness of the braking member associated with the device according to the invention.

    Pour autant, ils sont réalisés en un matériau propre à éviter tout risque d'altération du câble. Les galets presseurs (8) et (9) sont susceptibles d'entrer en rotation par rapport à des ces respectifs parallèles, et lesdits ces d'un même couple (8) (9) étant couplés à un axe (11) de synchronisation, également parallèle aux axes des galets (8) et (9) au moyen de chaínes (12), venant engrener dans des pignons (13) ménagés au niveau des axes respectifs (voir figure 3).However, they are made of a material suitable for avoiding any risk of alteration of the cable. The pressure rollers (8) and (9) are capable of rotating relative to of these respective parallels, and said these of the same pair (8) (9) being coupled to a synchronization axis (11), also parallel to the axes of the rollers (8) and (9) by means chains (12), meshing in pinions (13) formed at the axes respective (see Figure 3).

    De la sorte, les galets (8) et (9), de par ce couplage, ne peuvent tourner qu'à la même vitesse.In this way, the rollers (8) and (9), by this coupling, can only rotate at the same speed.

    L'axe (11) est couplé avec un dispositif de renvoi d'angles (14) (figure 3), destiné à transformer la direction verticale de l'axe (11) en direction horizontale selon un nouvel axe (15). Au voisinage de l'extrémité de cet axe (15) sont montés des coupleurs à poudre (16).The axis (11) is coupled with an angle deflection device (14) (FIG. 3), intended for transform the vertical direction of the axis (11) into a horizontal direction according to a new axis (15). In the vicinity of the end of this axis (15) are mounted powder couplers (16).

    De manière connue, de tels coupleurs sont alimentés électriquement, de telle sorte à générer un couple électrique au niveau des disques constitutifs desdits coupleurs qui, fonction du sens du courant, sont susceptibles d'assurer un couple résistant sur l'axe (15) et partant, sur l'axe (11), donc par voie de conséquence, sur les galets (8) et (9). In known manner, such couplers are electrically powered, so as to generate an electrical torque at the level of the constituent discs of said couplers which, depending on the direction of the current, are capable of ensuring a resistant torque on the axis (15) and therefore, on the axis (11), therefore consequently, on the rollers (8) and (9).

    Par réglage de l'intensité du courant électrique au niveau de chacun des coupleurs à poudre, il est ainsi possible de limiter la vitesse de rotation des galets presseurs (8) et (9), lorsque le câble est soumis à la tension exercée par le tambour, et, compte-tenu de la relative adhérence desdits galets au niveau du câble, il devient ainsi possible de générer une force résistante, tendant à s'opposer à ladite tension exercée par le tambour. Ce faisant, on génère une direction sensiblement rectiligne du câble (1) en sortie du dispositif conforme à l'invention, permettant d'arriver au résultat recherché pour pouvoir aboutir à un enroulement uniforme dudit câble sur le tambour.By adjusting the intensity of the electric current at each of the couplers to powder, it is thus possible to limit the speed of rotation of the pressure rollers (8) and (9), when the cable is subjected to the tension exerted by the drum, and, taking into account the relative adhesion of said rollers at the level of the cable, it thus becomes possible to generate a resistant force, tending to oppose said tension exerted by the drum. This doing so, a substantially straight direction of the cable (1) is generated at the outlet of the device in accordance with the invention, making it possible to achieve the desired result in order to be able to achieve uniform winding of said cable on the drum.

    Lorsque le câble est sous tension, c'est à dire soumis à une charge suffisante pour assurer une tension propre à lui conférer une orientation sensiblement rectiligne, ou lors des phases de déroulement du câble, l'intensité du courant électrique acheminé au niveau des coupleurs à poudre est annulée, de telle sorte à permettre une libre rotation des galets presseurs, les rendant de fait insusceptibles de générer une force résistante au déroulement de celui-ci.When the cable is under tension, i.e. subjected to a sufficient load to ensure a tension capable of giving it a substantially rectilinear orientation, or during cable unwinding phases, the intensity of the electric current supplied to the powder couplers is canceled, so as to allow free rotation of the rollers pressers, making them in fact incapable of generating a force resistant to unwinding of it.

    Afin d'assurer la dissipation de l'énergie générée par les coupleurs à poudre (16), un ventilateur (non représenté) est associé à chacun d'eux afin d'assurer son refroidissement.In order to dissipate the energy generated by the powder couplers (16), a fan (not shown) is associated with each of them to ensure its cooling.

    Selon une seconde forme de réalisation de l'invention, chacun des ces (11) est couplé au moyen d'un engrenage à une ou plusieurs pompes. Ces pompes alimentent un circuit hydraulique, muni d'un étranglement réglable en diamètre, assurant la limitation du débit, et partant, exerçant un obstacle à la libre rotation des engrenages des pompes, et partant des axes (11), donc, par voie de conséquence des galets presseurs (8) et (9), de telle sorte à générer la force résistante au niveau du câble (1) s'opposant à la force de traction exercée par le tambour.According to a second embodiment of the invention, each of these (11) is coupled to the by means of a gear with one or more pumps. These pumps supply a circuit hydraulic, with a throttle adjustable in diameter, ensuring flow limitation, and therefore exerting an obstacle to the free rotation of the pump gears, and therefore axes (11), therefore, as a result of the pressure rollers (8) and (9), so generating the resistive force at the level of the cable (1) opposing the tensile force exerted by the drum.

    Le circuit comporte également une branche de court-circuit alimentée au moyen d'une électrovanne, lorsque la création de cette force résistance n'est pas nécessaire, c'est à dire en cas d'enroulement sous charge, ou de déroulement du câble.The circuit also comprises a short-circuit branch supplied by means of a solenoid valve, when the creation of this resistance force is not necessary, i.e. in case of winding under load, or unwinding of the cable.

    Par ailleurs, la branche active des systèmes hydrauliques est munie d'un système de radiateur permettant d'évacuer l'énergie calorifique développée, ce radiateur étant associée à un ventilateur calibré en conséquence. In addition, the active branch of hydraulic systems is equipped with a radiator for evacuating the developed heat energy, this radiator being associated with a fan calibrated accordingly.

    Enfin, lors de l'arrêt de l'installation, le maintien est assuré par un frein mécanique, notamment de type à disque. Ce frein est bien entendu libéré pendant les périodes de rotation du tambour tant à l'enroulement qu'au déroulement.Finally, when the installation is stopped, maintenance is ensured by a mechanical brake, especially disc type. This brake is of course released during periods of rotation of the drum both during winding and unwinding.

    On conçoit tout l'intérêt d'un tel dispositif permettant de générer une force résistante, y compris à l'arrêt, propre donc à s'opposer à la traction exercée par le tambour sur le câble et donc à assurer la tension de celui-ci sans pour autant générer une trop importante déperdition d'énergie qui nécessiterait alors un surdimensionnement de la capacité du tambour.We can understand the advantage of such a device making it possible to generate a resistant force, including understood when stationary, therefore capable of opposing the traction exerted by the drum on the cable and therefore to ensure the tension thereof without generating too much energy loss which would then require an oversizing of the capacity of the drum.

    Ce dispositif est tout particulièrement simple à mettre en oeuvre et à réaliser et peut se monter très facilement sur l'organe de trancannage qui associe de manière traditionnelle les treuils.This device is particularly simple to implement and to realize and can be very easily mount on the slicing device which associates in a traditional way winches.

    Claims (8)

    Dispositif de maintien sous tension d'un câble, notamment lors de son enroulement sur le tambour d'un appareil de levage ou de halage, caractérisé en ce qu'il comprend au moins un jeu de deux galets presseurs (8, 9), situés dans un même plan et montés de manière quasi-tangentielle, et dont les gorges respectives sont destinées à recevoir le câble au niveau de leur point de tangence ou de quasi-tangence commun, lesdits galets étant couplés directement ou indirectement à un organe de freinage (15, 16), propre à engendrer au niveau du câble, une force résistante, réglable en intensité, s'opposant à la tension exercée par le tambour du dispositif de levage ou de halage au niveau duquel il est mis en place.Device for keeping a cable under tension, in particular when it is wound on the drum of a lifting or hauling device, characterized in that it comprises at least one set of two pressure rollers (8, 9), located in the same plane and mounted in a quasi-tangential manner, and the respective grooves of which are intended to receive the cable at their point of common tangency or quasi-tangency, said rollers being coupled directly or indirectly to a braking member ( 15, 16), capable of generating at the level of the cable, a resistant force, adjustable in intensity, opposing the tension exerted by the drum of the lifting or hauling device at the level of which it is put in place. Dispositif de maintien sous tension d'un câble selon la revendication 1, caractérisé en ce qu'il est monté sur un organe de trancanage (17) et en ce qu'il est déplaçable en synchronisme avec celui-ci, de telle sorte à ainsi générer de manière continue la force résistante, quel que soit le positionnement latéral du câble par rapport au tambour au niveau duquel il est destiné à être enroulé.Device for keeping a cable under tension according to claim 1, characterized in that it is mounted on a cutting member (17) and in that it is displaceable in synchronism with the latter, so as to continuously generate the resistive force, regardless of the lateral positioning of the cable relative to the drum at which it is intended to be wound. Dispositif de maintien sous tension d'un câble selon l'une des revendications 1 et 2, caractérisé en ce qu'il comporte plusieurs jeux de galets presseurs (8, 9), couplés entre eux.Device for keeping a cable under tension according to one of claims 1 and 2, characterized in that it comprises several sets of pressure rollers (8, 9), coupled together. Dispositif de maintien sous tension d'un câble selon l'une des revendications 1 à 3, caractérisé en ce que les galets presseurs (8, 9) sont reliés à l'organe de freinage (15, 16) directement ou par l'intermédiaire d'un organe de transmission intermédiaire (14), tel qu'un renvoi d'angle.Device for keeping a cable under tension according to one of claims 1 to 3, characterized in that the pressure rollers (8, 9) are connected to the braking member (15, 16) directly or via an intermediate transmission member (14), such as a bevel gear. Dispositif de maintien sous tension d'un câble selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de freinage (15, 16) est constitué par un système hydraulique constitué par une ou plusieurs pompes à engrenages couplées directement sur les axes (11) de couplage des galets presseurs (8, 9) ou sur l'organe de transmission intermédiaire (14), lesdites pompes alimentant un circuit hydraulique, dont l'une des branches est munie d'un étranglement réglable, assurant la limitation du débit, et partant, permettent la génération de l'effort de retenue du câble.Device for keeping a cable under tension according to one of claims 1 to 4, characterized in that the braking member (15, 16) is constituted by a hydraulic system constituted by one or more gear pumps coupled directly to the pins (11) for coupling the pressure rollers (8, 9) or on the intermediate transmission member (14), said pumps supplying a hydraulic circuit, one of the branches of which is provided with an adjustable throttle, ensuring the flow limitation, and therefore, allow generation of the cable retaining force. Dispositif de maintien sous tension d'un câble selon la revendication 5, caractérisé en ce que la branche du circuit hydraulique munie de l'étranglement réglable comporte une branche de court-circuit accessible par l'intermédiaire d'une électrovanne, dans le cas où la création de la tension n'est pas nécessaire ou, lors du déroulement du câble. Device for keeping a cable under tension according to claim 5, characterized in that the branch of the hydraulic circuit provided with the adjustable throttle comprises a short-circuit branch accessible by means of a solenoid valve, in the case where the creation of tension is not necessary or, during the unwinding of the cable. Dispositif de maintien sous tension d'un câble selon l'une des revendications 5 et 6, caractérisé en ce qu'il comporte un fiein mécanique, notamment de type à disque, destiné à maintenir arrêtés les galets presseurs (8, 9), ledit frein étant libéré pendant la période de rotation du tambour tant à l'enroulement qu'au déroulement.Device for keeping a cable under tension according to one of claims 5 and 6, characterized in that it comprises a mechanical wire, in particular of the disc type, intended to keep the pressure rollers (8, 9) stopped, said brake being released during the drum rotation period both during winding and unwinding. Dispositif de maintien sous tension d'un câble selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de freinage est constitué par un système de coupleurs à poudre (16), reliés directement ou indirectement aux axes des galets presseurs (8, 9), lesdits coupleurs étant alimentés électriquement avec un courant d'intensité adapté afin de générer un couple résistant adéquat, fonction de la force résistante, et donc de la tension que l'on souhaite créer au niveau du câble.Device for keeping a cable under tension according to one of claims 1 to 4, characterized in that the braking member is constituted by a system of powder couplers (16), connected directly or indirectly to the axes of the pressure rollers (8, 9), said couplers being supplied electrically with a current of suitable intensity in order to generate an adequate resistive torque, a function of the resistive force, and therefore of the tension which it is desired to create at the level of the cable.
    EP19980420193 1997-10-21 1998-10-21 Device for maintaining the tension in a cable Expired - Lifetime EP0919513B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9713405A FR2769907B1 (en) 1997-10-21 1997-10-21 DEVICE FOR HOLDING A CABLE
    FR9713405 1997-10-21

    Publications (2)

    Publication Number Publication Date
    EP0919513A1 true EP0919513A1 (en) 1999-06-02
    EP0919513B1 EP0919513B1 (en) 2004-05-12

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    Application Number Title Priority Date Filing Date
    EP19980420193 Expired - Lifetime EP0919513B1 (en) 1997-10-21 1998-10-21 Device for maintaining the tension in a cable

    Country Status (4)

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    EP (1) EP0919513B1 (en)
    DE (1) DE69823778T2 (en)
    ES (1) ES2218790T3 (en)
    FR (1) FR2769907B1 (en)

    Cited By (1)

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    Publication number Priority date Publication date Assignee Title
    CN103601091A (en) * 2013-11-25 2014-02-26 江苏科技大学 Cable diameter speed measuring and guide device for flexible cable arranging mechanism

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2900141B3 (en) 2006-04-21 2008-07-11 Paillardet S A Sa LIFTING WINCH

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    US3618840A (en) * 1968-12-31 1971-11-09 France Etat Endless track devices for laying cables and the like
    US4033496A (en) * 1975-01-13 1977-07-05 The Post Office Apparatus for hauling cables or other elongate bodies
    GB2037693A (en) * 1978-12-21 1980-07-16 Standard Telephones Cables Ltd Cable handling apparatus
    US4508251A (en) * 1982-10-26 1985-04-02 Nippon Telegraph And Telephone Public Corp. Cable pulling/feeding apparatus
    US5009353A (en) * 1990-02-01 1991-04-23 Lake Shore, Inc. Cable tensioning device

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    Publication number Priority date Publication date Assignee Title
    US3618840A (en) * 1968-12-31 1971-11-09 France Etat Endless track devices for laying cables and the like
    US4033496A (en) * 1975-01-13 1977-07-05 The Post Office Apparatus for hauling cables or other elongate bodies
    GB2037693A (en) * 1978-12-21 1980-07-16 Standard Telephones Cables Ltd Cable handling apparatus
    US4508251A (en) * 1982-10-26 1985-04-02 Nippon Telegraph And Telephone Public Corp. Cable pulling/feeding apparatus
    US5009353A (en) * 1990-02-01 1991-04-23 Lake Shore, Inc. Cable tensioning device

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN103601091A (en) * 2013-11-25 2014-02-26 江苏科技大学 Cable diameter speed measuring and guide device for flexible cable arranging mechanism

    Also Published As

    Publication number Publication date
    EP0919513B1 (en) 2004-05-12
    FR2769907B1 (en) 2000-01-07
    DE69823778D1 (en) 2004-06-17
    FR2769907A1 (en) 1999-04-23
    ES2218790T3 (en) 2004-11-16
    DE69823778T2 (en) 2005-04-28

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