EP2399651B1 - Descender braking device for rope climbing and descent - Google Patents

Descender braking device for rope climbing and descent Download PDF

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Publication number
EP2399651B1
EP2399651B1 EP11354034.8A EP11354034A EP2399651B1 EP 2399651 B1 EP2399651 B1 EP 2399651B1 EP 11354034 A EP11354034 A EP 11354034A EP 2399651 B1 EP2399651 B1 EP 2399651B1
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EP
European Patent Office
Prior art keywords
rope
descender
ascender
appliance according
chain
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EP11354034.8A
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German (de)
French (fr)
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EP2399651A1 (en
Inventor
Alain Maurice
Benoît Vuillermoz
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Zedel SAS
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Zedel SAS
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/398—Bendable, ductible

Definitions

  • the invention relates to a descending blocker device for rope ascending and descending, comprising a body having attachment means intended to be connected to the user's shoulder belt, and a blocking device that can be unlocked under load.
  • Such a safety device is used by landscapers for pruning work, or for all types of work at height.
  • Prusik knot is formed by a rope wrapped around the main rope.
  • the descent is achieved by placing your hand on the top of the Prusik knot.
  • the action of the hand down makes it possible to control the speed of descent. If you remove your hand, the knot re-locks.
  • there is early wear of the cord which requires frequent replacement of the Prusik node to ensure safety.
  • Another disadvantage is that of the moisture of the rope and cord in case of rain, which can change the stress of unlocking the Prusik knot.
  • the document US 6382355 (Kowalewski) relates to a locking device for raising and lowering rope, in which the locking is effected by pinching the rope created by a pivoting movement of a cam which presses the rope against the body of the apparatus.
  • the unlocking is effected by means of a knot cord or an auxiliary lever so as to rotate the body of the device to loosen the rope.
  • premature wear of the aluminum cam a lack of progressivity on the descent, and a difficulty in positioning the rope which requires prior disassembly of the shaft and the cam.
  • the unit can only be used with a double rope with rope return.
  • the document FR 2409765 discloses a rope chute comprising three parts hinged together by hinges, each bar-shaped piece being pierced with a hole for the passage of the rope.
  • the lower piece is attached to the harness.
  • the locking position is obtained when all three parts are vertically drawn.
  • a lever is mounted at the free end of the lower part to control the speed of descent. Ascent up the rope is not possible with this unit. It is only a descender.
  • the object of the invention is to provide a self-locking descender device, easy to maneuver at the ascent and descent, and can be unlocked under load with a moderate effort regardless of the moisture content of the rope.
  • the blockage thus starts from the upper link, then is transmitted downwards with the formation of a multitude of friction that amplify to the lower link articulated to the body.
  • the user remains immobilized on the rope thanks to the self-locking effect of the device. Unblocking can intervene in charge, thanks to a manual action on the upper link. In case of relaxation of the support action on the upper link, the blocking device becomes active automatically under the weight of the user.
  • a descending blocking device 10 for raising and lowering on rope, comprises a metal body 11 formed for example by two parallel flanges 12, 13 spaced apart from one another by spacers 14.
  • One of the EX1 ends of the body 11 is provided with a bracket 15 having a first hole 16 for hooking a first carabiner 17, which is intended to be connected to the shoulder (not shown) of the user.
  • the other end EX2 of the body 11 is equipped with a chain of metal links 18, constituted by a succession of friction elements 19 hinged together.
  • This chain of links 18 is arranged outside the body 11.
  • the friction elements 19 have identical structures in the form of diabolos 20 articulated together by link rods 21.
  • the diabolos 20 are parallel to each other, and extend in directions perpendicular to the flanges 12, 13, so as to form a series of intervals 22 for the passage of the rope 23.
  • the rope 23 crosses in zigzag the successive intervals 22 of the chain of links 18 coming into contact with each of the diabolos 20. Two successive diabolos are thus positioned on both sides of the rope 23. In the presence of the rope 23, this chain of links 18 constitutes the device blocking device.
  • the passage zigzag of the rope 23 in the intervals 22 of the chain of links 18 creates a plurality of friction of the rope on the diabolos 20.
  • the upper link 24 at the free end of the chain 18 is advantageously provided with means to initiate the blockage, thanks to the friction of his diabolo 20 on the rope 23.
  • the priming means comprise a spring 25, in particular a torsion spring, biasing the spacing of the two pairs of link rods 21 causing the upper diabolo 20 to come into contact with the rope 23.
  • the torsion spring 25 is threaded on the pivot axis 26 of the upper link 24.
  • the two opposite ends of the spring 25 are supported on abutments 27, 28 provided on the same side on the last and the last but one of the links 21.
  • the friction of the rope 23 on the upper link 24 is generated by a jumper 29 in U flanking the upper diabolo 20, so as to rub against the rope.
  • the inner faces of the jumper 29 comprise for example ribs 30, or may be made or coated with a suitable material, in particular based on rubber or rubber.
  • the combination of a spring and a jumper can also be provided for the initiation of the blockage.
  • the attachment lug 15 has a second hole 31 for hooking the end of the rope by means of a second carabiner 32.
  • This use in double rope allows the rope 23 to pass around a return 33 located 10
  • This reference 33 may consist of a branch of a tree, or a ring or a pulley.
  • the rope 23 is thus wound up in an inverted U by being hooked to the attachment lug 15 of the apparatus 10.
  • the rope 23 passes through the chain of links 18, and then the space between the flanges 12, 13 of the body 11.
  • a pulley 34 is mounted for free rotation between the flanges 12, 13 at the end EX2 of the body 11 to promote upward reversion.
  • the blocking of the apparatus 10 starts on the upper link 24 thanks to the friction of its diabolo 20 on the rope 23 following the action of the spring 25.
  • the user applies his weight down of the body 11.
  • the upper link 24 being fixed, the set of links of the other friction elements 19 pivot about the axes 26 of their respective diabolos 20 with spacing their link rods 21.
  • the user thus remains immobilized on the rope 23, thanks to the self-locking effect of the device 10.
  • the release can intervene in charge, just press the upper link 24 to trigger the release of the blocker. It is then possible to descend along the rope 23, with a controlled and progressive speed. This release persists as long as the manual action of support on the upper link 24 is maintained. In case of relaxation of the action of support on the upper link 24, the blocker becomes active by locking itself automatically under the weight of the user.
  • the blocker For the ascent towards the return 33, the blocker must be unlocked, and it is sufficient for the user to pull on the free bottom run of the rope 23 in the direction of the arrow F1 ( figure 5 ).
  • the presence of the pulley 34 facilitates this upward movement or upward movement.
  • the means for initiating the locking at the upper part of the chain of links 18 comprise a first pallet 50 articulated on the axis 26 of the upper link, and a second pallet 51 articulated on the axis 26 of the penultimate link.
  • Each of the two pallets 50, 51 has an orifice 52, 53 for the zig-zag passage of the rope 23.
  • Such a combination of the two pallets 50, 51 makes it possible to pull the chain of links 18 firmly upwards ( Figures 9 to 11 ) and adapts better to different rope diameters.
  • the unblocking occurs as on the realization of Figures 4 and 5 pressing the first upper pallet 50, causing the release of the blocker.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Lowering Means (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à un appareil bloqueur descendeur pour la remontée et la descente sur corde, comprenant un corps ayant des moyens d'attache destinés à être reliés au baudrier de l'utilisateur, et un dispositif bloqueur pouvant être débloqué en charge.The invention relates to a descending blocker device for rope ascending and descending, comprising a body having attachment means intended to be connected to the user's shoulder belt, and a blocking device that can be unlocked under load.

Un tel appareil de sécurité est utilisé par les paysagistes pour des travaux d'élagage , ou pour tous types de travaux en hauteur.Such a safety device is used by landscapers for pruning work, or for all types of work at height.

État de la techniqueState of the art

On connaît la technique poulie et noeud Prusik souvent utilisée par les élageurs pour assurer la remontée et la descente sur corde. Le noeud Prusik est formé au moyen d'une cordelette enroulée autour de la corde principale. La descente est obtenue en plaçant la main sur le haut du noeud Prusik. L'action de la main vers le bas permet de contrôler la vitesse de descente. Si on enlève la main, le noeud se rebloque. On a néanmoins constaté une usure prématurée de la cordelette, qui nécessite un remplacement fréquent du noeud Prusik pour assurer la sécurité. Un autre inconvénient est celui de l'humidité de la corde et de la cordelette en cas de pluie, ce qui peut modifier l'effort de déblocage du noeud Prusik.We know the technique pulley and Prusik knot often used by the haulers to ensure the ascent and descent on rope. The Prusik knot is formed by a rope wrapped around the main rope. The descent is achieved by placing your hand on the top of the Prusik knot. The action of the hand down makes it possible to control the speed of descent. If you remove your hand, the knot re-locks. However, there is early wear of the cord, which requires frequent replacement of the Prusik node to ensure safety. Another disadvantage is that of the moisture of the rope and cord in case of rain, which can change the stress of unlocking the Prusik knot.

Les documents US 2006/0081418 et 2005/262669 décrivent un bloqueur descendeur ayant une série d'éléments bloquants destinés à assurer un effet de pincement de la corde. Les éléments bloquants sont tous articulés du même côté de l'appareil. Pour le déblocage, il faut exercer une action de rapprochement de deux palettes aux extrémités du système, soit à la main, soit à l'aide de la corde. A la main, l'effort de déblocage est important en charge. En faisant passer la corde autour des deux palettes, on peut diminuer l'effort de déblocage, par contre pour s'arrêter, l'utilisateur ne maîtrise pas la position d'arrêt avec précision.The documents US 2006/0081418 and 2005/262669 describe a descending blocker having a series of blocking elements intended to ensure a pinching effect of the rope. The blocking elements are all articulated on the same side of the device. For the unlocking, it is necessary to exert an action of bringing two pallets closer to the ends of the system, either by hand or with the help of the rope. By hand, the release effort is important in charge. By passing the rope around the two pallets, it can reduce the release effort, for against to stop, the user does not control the stop position accurately.

Le document US 6382355 (Kowalewski) concerne un appareil bloqueur pour la remontée et la descente sur corde, dans lequel le blocage s'effectue par pincement de la corde créé par un mouvement de pivotement d'une came qui presse la corde contre le corps de l'appareil. Le déblocage s'opère au moyen d'une cordelette à noeuds ou d'un levier auxiliaire de manière à faire pivoter le corps de l'appareil pour décoincer la corde. On a néanmoins constaté une usure prématurée de la came en aluminium, un manque de progressivité à la descente, et une difficulté de mise en place de la corde qui nécessite un démontage préalable de l'axe et de la came. L'appareil peut uniquement être utilisé avec une corde à double avec renvoi de la corde.The document US 6382355 (Kowalewski) relates to a locking device for raising and lowering rope, in which the locking is effected by pinching the rope created by a pivoting movement of a cam which presses the rope against the body of the apparatus. The unlocking is effected by means of a knot cord or an auxiliary lever so as to rotate the body of the device to loosen the rope. However, it has been found premature wear of the aluminum cam, a lack of progressivity on the descent, and a difficulty in positioning the rope which requires prior disassembly of the shaft and the cam. The unit can only be used with a double rope with rope return.

Le document FR 2409765 décrit un descendeur sur corde comprenant trois pièces articulées entre elles par des charnières, chaque pièce en forme de barrette étant percée d'un trou pour le passage de la corde. La pièce inférieure est attachée au harnais. La position de blocage est obtenue lorsque les trois pièces sont ailignées verticalement. Un levier est monté à l'extrémité libre la pièce inférieure pour piloter la vitesse de descente. La remontée le long de la corde n'est pas possible avec cet appareil. Il s'agit uniquement d'un descendeur.The document FR 2409765 discloses a rope chute comprising three parts hinged together by hinges, each bar-shaped piece being pierced with a hole for the passage of the rope. The lower piece is attached to the harness. The locking position is obtained when all three parts are vertically drawn. A lever is mounted at the free end of the lower part to control the speed of descent. Ascent up the rope is not possible with this unit. It is only a descender.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser un appareil bloqueur descendeur autobloquant, facile à manoeuvrer à la remontée et à la descente, et pouvant être débloqué en charge avec un effort modéré indépendamment du degré d'humidité de la corde.The object of the invention is to provide a self-locking descender device, easy to maneuver at the ascent and descent, and can be unlocked under load with a moderate effort regardless of the moisture content of the rope.

L'appareil selon l'invention est caractérisé en ce que

  • le dispositif bloqueur comporte une chaîne de maillons métalliques constituée par une succession d'éléments de frottement articulés entre eux par des biellettes de liaison pour former une série d'intervalles pour le passage en zig-zag de la corde,
  • les éléments de frottement de la chaîne de maillons comportent des diabolos parallèles entre eux, et s'étendant perpendiculairement au corps, les diabolos successifs se trouvent ainsi positionnés de part et d'autre de la corde,
  • la partie supérieure de la chaîne de maillons coopère avec des moyens pour amorcer le blocage du dispositif bloqueur soumis au poids de l'utilisateur, le déblocage pouvant s'effectuer sous charge lors du maintien d'une action d'appui sur le maillon supérieur.
The apparatus according to the invention is characterized in that
  • the blocking device comprises a chain of metallic links consisting of a succession of friction elements hinged together by connecting rods to form a series of intervals for the zig-zag passage of the rope,
  • the friction elements of the chain of links comprise diabolos parallel to each other, and extending perpendicular to the body, the successive diabolos are thus positioned on either side of the rope,
  • the upper part of the chain of links cooperates with means for initiating the blocking of the blocking device subjected to the weight of the user, the unlocking being carried out under load when maintaining a bearing action on the upper link.

Le blocage s'amorce ainsi depuis le maillon supérieur, puis est transmis vers le bas avec formation d'une multitude de frottements qui s'amplifient jusqu'au maillon inférieur articulé au corps. L'utilisateur reste ainsi immobilisé sur la corde grâce à l'effet d'autoblocage de l'appareil. Le déblocage peut intervenir en charge, grâce à une action manuelle sur le maillon supérieur. En cas de relâchement de l'action d'appui sur le maillon supérieur, le dispositif bloqueur redevient actif automatiquement sous le poids de l'utilisateur.The blockage thus starts from the upper link, then is transmitted downwards with the formation of a multitude of friction that amplify to the lower link articulated to the body. The user remains immobilized on the rope thanks to the self-locking effect of the device. Unblocking can intervene in charge, thanks to a manual action on the upper link. In case of relaxation of the support action on the upper link, the blocking device becomes active automatically under the weight of the user.

Les moyens d'amorçage du blocage peuvent être formés par :

  • soit par un ressort apte à écarter les biellettes de liaison au sommet de la chaîne en sollicitant la venue en contact de l'élément de frottement supérieur contre la corde,
  • soit par un cavalier encadrant l'élément de frottement supérieur, et présentant une structure en U frottant contre la corde.,
  • soit par une paire de palettes articulées sur les axes respectifs du maillon supérieur et de l'avant dernier maillon, chaque palette ayant un orifice pour le passage de la corde.
The locking initiation means may be formed by:
  • either by a spring able to move the tie rods at the top of the chain by urging the contact of the upper friction element against the rope,
  • either by a jumper framing the upper friction element, and having a U-shaped structure rubbing against the rope.
  • or by a pair of pallets articulated on the respective axes of the upper link and the penultimate link, each pallet having an orifice for the passage of the rope.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique en perspective d'un appareil bloqueur descendeur selon l'invention utilisé en corde à simple ;
  • la figure 2 montre une vue en coupe verticale de l'appareil de la figure 1 ;
  • la figure 3 représente une vue de détail à échelle agrandie de la partie supérieure de la chaîne de maillons ;
  • les figures 4 et 5 illustrent des vues en perspective d'une variante de réalisation de l'appareil utilisé en corde à double, respectivement en position de blocage et de déblocage ;
  • la figure 6 est une vue de profil de la figure 4 ;
  • la figure 7 est une variante de réalisation de la figure 3 ;
  • la figure 8 est une autre variante de réalisation de la figure 3 ;
  • les figures 9 et 10 illustrent des vues de profil et en coupe de l'appareil équipé du dispositif de la figure 8, et représenté en position de blocage ;
  • les figures 11 et 12 illustrent des vues de profil et en coupe de l'appareil équipé du dispositif de la figure 8, et représenté en position de déblocage.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of nonlimiting example and represented in the accompanying drawings, in which:
  • the figure 1 is a schematic perspective view of a descending blocker device according to the invention used in single rope;
  • the figure 2 shows a vertical sectional view of the device of the figure 1 ;
  • the figure 3 represents an enlarged detail view of the upper part of the chain of links;
  • the Figures 4 and 5 illustrate perspective views of an alternative embodiment of the apparatus used in double rope, respectively in the locking and unlocking position;
  • the figure 6 is a profile view of the figure 4 ;
  • the figure 7 is an alternative embodiment of the figure 3 ;
  • the figure 8 is another variant embodiment of the figure 3 ;
  • the Figures 9 and 10 illustrate profile and section views of the device equipped with the device of the figure 8 , and shown in blocking position;
  • the Figures 11 and 12 illustrate profile and section views of the device equipped with the device of the figure 8 , and shown in the unlocking position.

Description détaillée de l'inventionDetailed description of the invention

Sur les figures 1 à 3, un appareil bloqueur descendeur 10 pour la remontée et la descente sur corde, comporte un corps 11 métallique formé à titre d'exemple par deux flasques 12, 13 parallèles espacés l'un de l'autre par des entretoises 14. L'une des extrémités EX1 du corps 11 est dotée d'une patte d'attache 15 ayant un premier orifice 16 pour l'accrochage d'un premier mousqueton 17, lequel est destiné à être relié au baudrier (non représenté) de l'utilisateur.On the Figures 1 to 3 , a descending blocking device 10 for raising and lowering on rope, comprises a metal body 11 formed for example by two parallel flanges 12, 13 spaced apart from one another by spacers 14. One of the EX1 ends of the body 11 is provided with a bracket 15 having a first hole 16 for hooking a first carabiner 17, which is intended to be connected to the shoulder (not shown) of the user.

L'autre extrémité EX2 du corps 11 est équipée d'une chaîne de maillons 18 métalliques, constituée par une succession d'éléments de frottement 19 articulés entre eux. Cette chaîne de maillons 18 est agencée à l'extérieur du corps 11.The other end EX2 of the body 11 is equipped with a chain of metal links 18, constituted by a succession of friction elements 19 hinged together. This chain of links 18 is arranged outside the body 11.

Les éléments de frottement 19 ont des structures identiques en formes de diabolos 20, articulés entre eux par des biellettes de liaison 21. Les diabolos 20 sont parallèlement entre eux, et s'étendent selon des directions perpendiculaires aux flasques 12, 13, de manière à former une série d'intervalles 22 pour le passage de la corde 23.The friction elements 19 have identical structures in the form of diabolos 20 articulated together by link rods 21. The diabolos 20 are parallel to each other, and extend in directions perpendicular to the flanges 12, 13, so as to form a series of intervals 22 for the passage of the rope 23.

La corde 23 traverse en zig zag les intervalles 22 successifs de la chaîne de maillons 18 en venant en contact avec chacun des diabolos 20. Deux diabolos successifs se trouvent ainsi positionnés des deux côtés de la corde 23. En présence de la corde 23, cette chaîne de maillons 18 constitue le dispositif bloqueur de l'appareil.The rope 23 crosses in zigzag the successive intervals 22 of the chain of links 18 coming into contact with each of the diabolos 20. Two successive diabolos are thus positioned on both sides of the rope 23. In the presence of the rope 23, this chain of links 18 constitutes the device blocking device.

Le passage en zig zag de la corde 23 dans les intervalles 22 de la chaîne de maillons 18 crée une pluralité de frottements de la corde sur les diabolos 20. Le maillon supérieur 24 à l'extrémité libre de la chaîne 18 est avantageusement pourvu de moyens pour amorcer le blocage, grâce au frottement de son diabolo 20 sur la corde 23.The passage zigzag of the rope 23 in the intervals 22 of the chain of links 18 creates a plurality of friction of the rope on the diabolos 20. The upper link 24 at the free end of the chain 18 is advantageously provided with means to initiate the blockage, thanks to the friction of his diabolo 20 on the rope 23.

Cet amorçage peut s'effectuer de différentes façons.
Dans l'exemple de la figure 3, les moyens d'amorçage comportent un ressort 25, notamment un ressort de torsion, sollicitant l'écartement des deux paires de biellettes de liaison 21 provoquant la venue en contact du diabolo supérieur 20 avec la corde 23. Le ressort 25 de torsion est enfilé sur l'axe 26 de pivotement du maillon supérieur 24. Les deux extrémités opposées du ressort 25 prennent appui sur des butées 27, 28 prévues d'un même côté sur la dernière et l'avant dernière des biellettes 21.This boot can be done in different ways.
In the example of the figure 3 , the priming means comprise a spring 25, in particular a torsion spring, biasing the spacing of the two pairs of link rods 21 causing the upper diabolo 20 to come into contact with the rope 23. The torsion spring 25 is threaded on the pivot axis 26 of the upper link 24. The two opposite ends of the spring 25 are supported on abutments 27, 28 provided on the same side on the last and the last but one of the links 21.

Dans l'exemple de la figure 7, le frottement de la corde 23 sur le maillon supérieur 24 est généré par un cavalier 29 en U encadrant le diabolo 20 supérieur, de manière à frotter contre la corde. Les faces internes du cavalier 29 comportent par exemple des nervures 30, ou peuvent être réalisées ou revêtues avec un matériau approprié, notamment à base de gomme ou de caoutchouc. La combinaison d'un ressort et d'un cavalier peut également être prévue pour l'amorçage du blocage.In the example of the figure 7 the friction of the rope 23 on the upper link 24 is generated by a jumper 29 in U flanking the upper diabolo 20, so as to rub against the rope. The inner faces of the jumper 29 comprise for example ribs 30, or may be made or coated with a suitable material, in particular based on rubber or rubber. The combination of a spring and a jumper can also be provided for the initiation of the blockage.

Sur les figures 4 à 6, la patte d'attache 15 comporte un deuxième orifice 31 pour l'accrochage du bout de corde au moyen d'un deuxième mousqueton 32. Cette utilisation en corde double permet de faire passer la corde 23 autour d'un renvoi 33 situé au-dessus de l'appareil 10. Ce renvoi 33 peut être constitué par une branche d'un arbre, ou par un anneau ou une poulie. La corde 23 est ainsi enroulée selon un U renversé en étant accrochée à la patte d'attache 15 de l'appareil 10. La corde 23 traverse la chaîne de maillons 18, et ensuite l'espace compris entre les flasques 12, 13 du corps 11. Une poulie 34 est montée à rotation libre entre les flasques 12, 13 à l'extrémité EX2 du corps 11 pour favoriser le ravalage vers le haut.On the Figures 4 to 6 , the attachment lug 15 has a second hole 31 for hooking the end of the rope by means of a second carabiner 32. This use in double rope allows the rope 23 to pass around a return 33 located 10 This reference 33 may consist of a branch of a tree, or a ring or a pulley. The rope 23 is thus wound up in an inverted U by being hooked to the attachment lug 15 of the apparatus 10. The rope 23 passes through the chain of links 18, and then the space between the flanges 12, 13 of the body 11. A pulley 34 is mounted for free rotation between the flanges 12, 13 at the end EX2 of the body 11 to promote upward reversion.

Le fonctionnement de l'appareil bloqueur descendeur 10 selon les figures 4 à 6, est le suivant :The operation of the descending blocking device 10 according to the Figures 4 to 6 , is the next :

Le blocage de l'appareil 10 s'amorce sur le maillon supérieur 24 grâce au frottement de son diabolo 20 sur la corde 23 suite à l'action du ressort 25. Pour assurer le blocage de l'appareil 10, l'utilisateur applique son poids vers le bas du corps 11. Le maillon supérieur 24 étant fixe, l'ensemble des maillons des autres éléments de frottement 19 pivotent autour des axes 26 de leurs diabolos 20 respectifs avec écartement de leurs biellettes de liaison 21. Il en résulte un allongement de la chaîne de maillons 18 (figures 4 et 6) le long de la corde 23, et une multitude de frottements qui s'amplifient vers le bas jusqu'au maillon inférieur articulé au corps 11. L'utilisateur reste ainsi immobilisé sur la corde 23, grâce à l'effet d'autoblocage de l'appareil 10.The blocking of the apparatus 10 starts on the upper link 24 thanks to the friction of its diabolo 20 on the rope 23 following the action of the spring 25. To ensure the locking of the apparatus 10, the user applies his weight down of the body 11. The upper link 24 being fixed, the set of links of the other friction elements 19 pivot about the axes 26 of their respective diabolos 20 with spacing their link rods 21. This results in an elongation of the chain of links 18 ( figures 4 and 6 ) along the rope 23, and a multitude of friction that grow down to the lower link articulated to the body 11. The user thus remains immobilized on the rope 23, thanks to the self-locking effect of the device 10.

Le déblocage peut intervenir en charge, il suffit d'appuyer sur le maillon supérieur 24 pour provoquer le déclenchement du bloqueur. Il est alors possible de descendre le long de la corde 23, avec une vitesse contrôlée et progressive. Ce déblocage persiste aussi longtemps que l'action manuelle d'appui sur le maillon supérieur 24 est maintenue. En cas de relâchement de l'action d'appui sur le maillon supérieur 24, le bloqueur redevient actif en se rebloquant automatiquement sous le poids de l'utilisateur.The release can intervene in charge, just press the upper link 24 to trigger the release of the blocker. It is then possible to descend along the rope 23, with a controlled and progressive speed. This release persists as long as the manual action of support on the upper link 24 is maintained. In case of relaxation of the action of support on the upper link 24, the blocker becomes active by locking itself automatically under the weight of the user.

Pour la remontée en direction du renvoi 33, le bloqueur doit être débloqué, et il suffit à l'utilisateur de tirer sur le brin inférieur libre de la corde 23 dans le sens de la flèche F1 (figure 5). La présence de la poulie 34 facilite ce mouvement de remontée, ou de ravalage vers le haut..For the ascent towards the return 33, the blocker must be unlocked, and it is sufficient for the user to pull on the free bottom run of the rope 23 in the direction of the arrow F1 ( figure 5 ). The presence of the pulley 34 facilitates this upward movement or upward movement.

En référence à la variante illustrée aux figures 8 à 13, les mêmes numéros de repères seront utilisés pour désigner des pièces identiques ou similaires. Les moyens pour amorcer le blocage à la partie supérieure de la chaîne de maillons 18, comportent une première palette 50 articulée sur l'axe 26 du maillon supérieur, et une deuxième palette 51 articulée sur l'axe 26 de l'avant dernier maillon. Chacune des deux palettes 50, 51 comporte un orifice 52, 53 pour le passage en zig-zag de la corde 23. Une telle association des deux palettes 50, 51 permet de tirer fermement la chaîne de maillons 18 vers le haut (figures 9 à 11) et s'adapte mieux aux différents diamètres de corde. Le déblocage intervient comme sur la réalisation des figures 4 et 5, en appuyant sur la première palette 50 supérieure, entraînant le déclenchement du bloqueur.With reference to the variant illustrated in FIGS. 8 to 13, the same reference numbers will be used to designate identical or similar parts. The means for initiating the locking at the upper part of the chain of links 18 comprise a first pallet 50 articulated on the axis 26 of the upper link, and a second pallet 51 articulated on the axis 26 of the penultimate link. Each of the two pallets 50, 51 has an orifice 52, 53 for the zig-zag passage of the rope 23. Such a combination of the two pallets 50, 51 makes it possible to pull the chain of links 18 firmly upwards ( Figures 9 to 11 ) and adapts better to different rope diameters. The unblocking occurs as on the realization of Figures 4 and 5 pressing the first upper pallet 50, causing the release of the blocker.

Claims (10)

  1. An ascender/descender appliance for ascending and descending on a rope, comprising :
    - a body (11) having attachment means to be connected to the user's harness,
    - a clampling device arranged outside the body, and able to be released on load,
    characterized in that
    - the clamping device comprises a chain of metal links (18) formed by a succession of friction elements (19) articulated on one another by connecting rods (21) to form a series of gaps (22) for zigzag passage of the rope (23),
    - the friction elements (19) of the chain of links (18) comprise diabolos (20) parallel to one another and extending perpendicularly to the body (11), successive diabolos thus being positioned on opposite sides of the rope,
    - the top part of the chain of links (18) collaborates with means for triggering clamping of the ascender device under the weught of the user, unlocking being performed on load when manually pressing is maintained on top link 24;
  2. The ascender/descender appliance according to claim 1, characterized in that the means for triggering clamping are formed by a spring (25) designed to separate the connecting rods at the top of the chain urging the top friction element (19) into contact against the rope (23).
  3. The ascender/descender appliance according to claim 2, characterized in that the spring (25) is formed by a torsion spring threaded onto the pivot-pin (26) of the top link (24), the opposite ends of the spring (25) pressing against stops (27, 28) provided on the last and penultimate connecting rods (21).
  4. The ascender/descender appliance according to claim 1, characterized in that the means for triggering clamping comprise a rider (29) framing the top friction element (19) and presenting a U-shaped structure rubbing against the rope (23).
  5. The ascender/descender appliance according to claim 4, characterized in that the inner surfaces of the rider (29) in contact with the rope are provided with ribs (30).
  6. The ascender/descender appliance according to claim 4, characterized in that the inner surfaces of the rider (29) are coated by a gum- or rubber-based material.
  7. The ascender/descender appliance according to claim 1, characterized in that, at one of the ends (EX1) of the body (11), the attachment means comprise a first opening (16) for attaching a first karabiner (17) connected to the harness, and a second opening (31) for attaching a second karabiner (32) connected to the top strand of the rope when a double rope is used.
  8. The ascender/descender appliance according to claim 7, characterized in that the chain of links (18) is arranged at the other end (EX2) of the body (11), which is formed by a pair of parallel flange-plates (12, 13) separated from one another by spacers (14).
  9. The ascender/descender appliance according to claim 8, characterized in that a pulley (34) is arranged between the flange-plates (12, 13) to facilitate the sliding movement of the rope (23) on climbing, or upward hoisting.
  10. The ascender/descender appliance according to claim 1, characterized in that the means for triggering clamping comprise a pair of tongues (50, 51) articulated on the respective pivot-pins (26) of the top link and of the penultimate link, each tongue (50, 51) having an opening (52, 53) for passage of the rope (23).
EP11354034.8A 2010-06-23 2011-06-14 Descender braking device for rope climbing and descent Active EP2399651B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1002636A FR2961709B1 (en) 2010-06-23 2010-06-23 DESCENDOR BLOCKING APPARATUS FOR ROPE UP AND DOWN

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EP2399651A1 EP2399651A1 (en) 2011-12-28
EP2399651B1 true EP2399651B1 (en) 2016-08-17

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US (1) US8950550B2 (en)
EP (1) EP2399651B1 (en)
CN (1) CN102407005B (en)
AU (1) AU2011202960B2 (en)
ES (1) ES2593961T3 (en)
FR (1) FR2961709B1 (en)

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FR2961709B1 (en) * 2010-06-23 2012-12-07 Zedel DESCENDOR BLOCKING APPARATUS FOR ROPE UP AND DOWN
US8925680B2 (en) * 2010-07-14 2015-01-06 Brian Christopher Herrli Rappelling apparatus and method
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US10689807B2 (en) * 2013-03-14 2020-06-23 Albany International Corp. Industrial fabrics comprising infinity shape coils
GB201315065D0 (en) * 2013-08-22 2013-10-02 Coyle Claire Climbing and friction line receiving device
FR3011475B1 (en) * 2013-10-07 2016-03-04 Simond Ets DESCENDOR-INSURER AUTOBLOQUANT
US10052522B2 (en) * 2014-10-03 2018-08-21 Cmc Rescue, Inc. Brake bar
US11198026B2 (en) * 2014-10-27 2021-12-14 Black Ash Outdoor Products, LLC Fall restraint system
JP2016106793A (en) * 2014-12-04 2016-06-20 宗教法人立善寺 Evacuation tool
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CN105508508A (en) * 2016-02-25 2016-04-20 李先登 Knotted single-wirerope spherical toothed chain rope and manufacturing method thereof
US10864387B2 (en) * 2017-04-19 2020-12-15 Auburn University Tactical rope insertion assist device
US10987525B2 (en) * 2017-05-22 2021-04-27 Cmc Rescue, Inc. Descending apparatus and methods for use of same
USD869939S1 (en) * 2018-07-17 2019-12-17 Zedel Rope climbing apparatus
USD878185S1 (en) * 2018-07-17 2020-03-17 Zedel Mechanical prusik
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Publication number Publication date
AU2011202960A1 (en) 2012-01-19
US20110315480A1 (en) 2011-12-29
FR2961709B1 (en) 2012-12-07
CN102407005A (en) 2012-04-11
EP2399651A1 (en) 2011-12-28
AU2011202960B2 (en) 2016-05-12
CN102407005B (en) 2015-06-03
ES2593961T3 (en) 2016-12-14
FR2961709A1 (en) 2011-12-30
US8950550B2 (en) 2015-02-10

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