EP0803268B1 - Pulley with pivoting side plate and integral clamp - Google Patents

Pulley with pivoting side plate and integral clamp Download PDF

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Publication number
EP0803268B1
EP0803268B1 EP97410043A EP97410043A EP0803268B1 EP 0803268 B1 EP0803268 B1 EP 0803268B1 EP 97410043 A EP97410043 A EP 97410043A EP 97410043 A EP97410043 A EP 97410043A EP 0803268 B1 EP0803268 B1 EP 0803268B1
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EP
European Patent Office
Prior art keywords
flange
spindle
rope
tumbler
pulley
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP97410043A
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German (de)
French (fr)
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EP0803268A1 (en
Inventor
Jean Marc Hede
Paul Petzl
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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

Definitions

  • Single oscillating flange pulleys are used with classic way to make lifting devices, including hoists, hauling, diverts, as well as horizontal progression devices like the zip line.
  • the rotary roller is mounted idly on the axis of the pulley. If the devices must respond for security measures to functions non-return, it is essential to associate a blocker with the pulley intended to block the rope when the force of handling.
  • the blocker is formed by a separate device connected to the pulley by a connecting carabiner. The whole then presents a significant bulk, and requires the obligatory passage of the rope in the two devices in series.
  • the object of the invention is to produce a flange pulley reliable swivel and non-return device with a small footprint.
  • the pulley according to the invention is characterized in that said second axis is tubular, extending parallel to the first axis, and having an internal orifice intended to come into alignment with a hole conjugate of the second flange when the latter reaches the close to the closed position, so as to allow hooking a carabiner through the articulation of the trigger, simultaneously causing the locking of the second flange in closed position.
  • Attaching the carabiner to the hinge pin of the blocker reduces the size of the pulley while guaranteeing safety, because the retractable flange remains locked positively in the closed position preventing all rope escape.
  • the second axis of the blocker is mounted in cantilever on the first flange, and comprises first means for axial positioning of the trigger, and second means for nesting the second flange in closed position.
  • the first means of positioning of the trigger in space are formed by a stop arranged at near the end of the second axis opposite the second flange.
  • the second means of fitting the second flange consist of an annular rim projecting from the stop and arranged coaxially with the orifice of the second axis.
  • the means of articulation of the second flange on the first axis are arranged to authorize when closing the second flange, opposite movements of spacing and approximation with respect to the second axis.
  • the movable trigger advantageously includes means for control to secure the trigger lock in the inactive unlocking position inhibiting the action of the blocker. The use of the device is then reduced to a single pulley without blocker.
  • a pulley designated by the reference general 10 has a first fixed flange 12 serving as a support to a first axis 14 of a rotary roller 16 and to a second axis 18 a locking trigger 20 constituting an integrated blocker 21.
  • the two axes 14, 18 are fixed and extend parallel to one another. the other in a direction perpendicular to the fixed flange 12.
  • the roller 16 is mounted to rotate freely on the first axis 14 with interposition of a self-lubricating bearing 22, which could well heard to be replaced by other running gear.
  • the rotary roller 16 is provided with an annular groove 24 for the rope guide, which can be blocked by a surface of jamming of trigger 20 when it is located in active position.
  • a second mobile flange 28 is mounted at rotation on the end of the first axis 14 between a position closed ( Figure 1), and an open position ( Figure 9).
  • the second flange 28 is urged to bear against a shoulder 30 of the first axis 14 by the action of an elastic joint 32 of shape toric, which is arranged in an annular groove 34 of the flange 28, and closed by an external washer 36 secured to the first axis 14.
  • the seal 32 can of course be replaced by a simple wavy elastic washer.
  • the shoulder 30 protrudes slightly from the front face of the bearing 22 so as to generate an axial clearance between the flange 28 and the bearing 22 so as not to hinder the rotational movement of the movable flange 28 relative to the roller 16.
  • the flanges 12,28 and the roller 16 are made of aluminum, while trigger 20 is in steel.
  • the wedging surface 26 has a plurality of retaining pins 38 intended to wedge the rope in the active position, and a central slot 40 to facilitate the evacuation of mud or ice from the rope.
  • the roller 16 and the blocker 21 are both arranged in a transverse space 41 formed between the two flanges 12,28.
  • the second axis 18 of the trigger 20 is tubular and is mounted in overhang on the first flange 12.
  • One of the ends 42 is crimped on the first flange 12, while the end opposite 44 has a stop 46 for axial positioning of the body trigger 20, and a flange 48 of nesting of the second flange 28 when the latter is moved to the closed position.
  • the internal orifice 50 of the second axis 18 has a circular section and allows the passage of a carabiner.
  • the establishment of the second flange 28 on the annular flange 48 fitting is possible thanks to a circular hole 52 provided for the free end of the second movable flange 28.
  • the diameter internal hole is slightly larger than the outside diameter of the rim 48 of nesting.
  • the presence of the seal 32 in the groove 34 allows a certain friction braking of the rotational movement of the second flange 28 around the first axis 14, and in addition allows a slight alternating tilting movement of the second flange 28 at close to the closed position.
  • the tilting movement is centered on the first axis 14, and is made possible thanks to the deformation of the seal 32 (FIG. 3), alternately allowing a spacing in the direction of arrow F1 for aligning the hole 52 with orifice 50, and an approximation in the opposite direction indicated by arrow F2 for the insertion of the hole 52 on the flange 48 fitting the second axis 18.
  • the body of the trigger trigger 20 is provided with a light 54 of lockout allowing the passage of a carabiner for the trigger 20 locked in the inactive position.
  • a return spring 55 urges trigger 20 towards the active blocking position, the spring being formed by a torsion spring inserted in a notch in the body of trigger 20.
  • the trigger 20 In the absence of a rope inside the space 41, the trigger 20 abuts on the roller 16. In the separated position, a rib of the trigger 20 comes into abutment against a stopper of the flange 28.
  • FIG. 6 shows a first application of a deflection pulley non-return, the movable flange 28 not being shown for reasons of clarity of the drawing.
  • Rope 56 is in place on the roller 16, and the wedging surface 26 is in contact with the rope 56 following the spring return action 55.
  • the hoisting of a mass M by the left strand is made possible thanks to the trigger drive in the unlocking direction indicated by arrow D.
  • Unlocking by pivoting in the direction reverse of trigger 20 is operated by the friction exerted by the rope 56 on the pins of the surface 26 when the roller 16 rotates clockwise. If the force F is released, the mass M does not descend, thanks to the antagonistic action of the non-return blocker 21, the trigger 20 automatically returns in the opposite direction to the active position, in which the wedging surface 26 exerts significant pressure on the rope 56.
  • the closure of the second movable flange 28 is illustrated on the Figures 7 to 9, the rope 56 not being shown.
  • the movable flange 28 is first turned in the direction F3 around the first axis 14, followed at the end of the closing stroke by a slight spreading movement in direction F1 to allow passage over the flange 48 for nesting the second hollow axis 18.
  • Figure 8 corresponds to Figure 3 illustrating the next step of reclosure of the movable flange 28, in which the hole 52 is in alignment with the orifice 50, and ready to be fitted on the flange 48 of the second axis 18.
  • Figure 9 shows the final closing phase of the second flange 28, which is fitted on the articulation of the trigger 20 of the blocker 21.
  • the hole 52 of the second flange 28 serves bearing at the edge 48 of the second axis 18, which avoids a trigger overhang 20.
  • FIG. 10 represents two modes of use of the pulley 10 depending on whether the trigger 20 is free or locked.
  • the passage of carabiner 58 through the second hollow axis 18 and the hole 52 of the second flange 28 allows use in pulley of non return return. In this case, the trigger 20 is free, and is likely to block the rope.
  • the hooking of the carabiner 58 to through the articulation of the trigger 20 of the blocker 21 allows a reduction of the size of the pulley body 10.
  • the second flange 28 remains locked in the closed position after the passage of the carabiner 58 in the hollow axis 18 of trigger articulation 20.
  • Trigger 20 remains locked in the open position, which permanently spreads the surface of jamming 28 of rope 56.
  • Figure 11 shows another application of pulley 10 as booster for climbing up the rope 56.
  • the weight P is applied to the axis 18 of the trigger 20, and the rope 56 passes between the roller 16 and the wedging surface 26.
  • Figure 12 shows a zip line application unidirectional, in which the pulley 10 moves along of a rope 56 between a starting point A and a finishing point B located on a lower level.
  • the rope 56 passes under the roller 16, and the mass M is attached to the second axis 18 of the trigger 20.
  • the blocking trigger 20 is provided with a control lever 60 articulated on an axis 62 of the trigger 20, and having an angled shape.
  • the lever 60 has a first arm 60a located between the axis 62 and the intermediate zone 60b bent at right angle, and a second arm 60c serving as a gripping.
  • the first arm 60a is intended to cooperate with a bearing surface 64 provided at the upper part of the flanges 12, 28 to position the trigger 20 in an open position ( Figure 13), in which the wedging surface 28 does not enter in contact with the rope 56.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Lowering Means (AREA)
  • Pulleys (AREA)
  • Massaging Devices (AREA)

Description

L'invention est relative à une poulie comportant:

  • une paire de premier et deuxième flasques délimitant un espace transversal dans lequel est agencé un galet monté à rotation sur un premier axe,
  • une gorge ménagée dans le galet pour le guidage de la corde,
  • des moyens d'articulation du deuxième flasque sur le premier axe autorisant un déplacement relatif dudit flasque entre une position fermée emprisonnant la corde dans l'espace, et une position ouverte pour la mise en place de la corde sur le galet,
  • et un bloqueur intégré dans l'espace, et comprenant une gâchette mobile articulée sur un deuxième axe entre une position active de blocage et une position inactive de déblocage de la corde. Une telle poulie est connue de FR-A-2 339 566.
The invention relates to a pulley comprising:
  • a pair of first and second flanges defining a transverse space in which is arranged a roller mounted to rotate on a first axis,
  • a groove in the roller for guiding the rope,
  • means of articulation of the second flange on the first axis allowing relative movement of said flange between a closed position trapping the rope in space, and an open position for the placement of the rope on the roller,
  • and a blocker integrated in the space, and comprising a movable trigger articulated on a second axis between an active blocking position and an inactive position for unlocking the rope. Such a pulley is known from FR-A-2 339 566.

Des poulies simples à flasque oscillant sont utilisées d'une manière classique pour réaliser des appareils de levage, notamment des palans, des mouflages, des renvois, ainsi que des dispositifs de progression horizontale comme la tyrolienne. Le galet rotatif est monté fou sur l'axe de la poulie. Si les appareils doivent répondre pour des mesures de sécurité à des fonctions anti-retour, il est indispensable d'associer à la poulie un bloqueur destiné à bloquer la corde lors du relâchement de la force de manipulation. Le bloqueur est formé par un appareil distinct relié à la poulie par un mousqueton de liaison. L'ensemble présente alors un encombrement important, et nécessite le passage obligatoire de la corde dans les deux appareils en série.Single oscillating flange pulleys are used with classic way to make lifting devices, including hoists, hauling, diverts, as well as horizontal progression devices like the zip line. The rotary roller is mounted idly on the axis of the pulley. If the devices must respond for security measures to functions non-return, it is essential to associate a blocker with the pulley intended to block the rope when the force of handling. The blocker is formed by a separate device connected to the pulley by a connecting carabiner. The whole then presents a significant bulk, and requires the obligatory passage of the rope in the two devices in series.

L'objet de l'invention consiste à réaliser une poulie à flasque pivotant et à anti-retour fiable ayant un encombrement réduit.The object of the invention is to produce a flange pulley reliable swivel and non-return device with a small footprint.

La poulie selon l'invention est caractérisée en ce que ledit deuxième axe est tubulaire en s'étendant parallèlement au premier axe, et présente un orifice interne destiné à venir en alignement avec un trou conjugué du deuxième flasque lorsque ce dernier arrive au voisinage de la position fermée, de manière à autoriser l'accrochage d'un mousqueton à travers l'articulation de la gâchette, en provoquant simultanément le verrouillage du deuxième flasque en position fermée.The pulley according to the invention is characterized in that said second axis is tubular, extending parallel to the first axis, and having an internal orifice intended to come into alignment with a hole conjugate of the second flange when the latter reaches the close to the closed position, so as to allow hooking a carabiner through the articulation of the trigger, simultaneously causing the locking of the second flange in closed position.

L'accrochage du mousqueton d'attache à travers l'axe d'articulation du bloqueur réduit l'encombrement de la poulie tout en garantissant la sécurité, car le flasque escamotable reste verrouillé positivement dans la position fermée en empêchant tout échappement de la corde.Attaching the carabiner to the hinge pin of the blocker reduces the size of the pulley while guaranteeing safety, because the retractable flange remains locked positively in the closed position preventing all rope escape.

Selon une caractéristique de l'invention, le deuxième axe du bloqueur est monté en porte-à-faux sur le premier flasque, et comporte des premiers moyens de positionnement axial de la gâchette, et des deuxièmes moyens d'emboítement du deuxième flasque en position fermée. Les premiers moyens de positionnement de la gâchette dans l'espace sont formés par une butée agencée au voisinage de l'extrémité du deuxième axe en regard du deuxième flasque. Les deuxièmes moyens d'emboítement du deuxième flasque sont constitués par un rebord annulaire faisant saillie de la butée et disposé coaxialement avec l'orifice du deuxième axe.According to a characteristic of the invention, the second axis of the blocker is mounted in cantilever on the first flange, and comprises first means for axial positioning of the trigger, and second means for nesting the second flange in closed position. The first means of positioning of the trigger in space are formed by a stop arranged at near the end of the second axis opposite the second flange. The second means of fitting the second flange consist of an annular rim projecting from the stop and arranged coaxially with the orifice of the second axis.

Selon un mode de réalisation préférentiel, les moyens d'articulation du deuxième flasque sur le premier axe sont agencés pour autoriser lors de la fermeture du deuxième flasque, des mouvements opposés d'écartement et de rapprochement par rapport au deuxième axe.According to a preferred embodiment, the means of articulation of the second flange on the first axis are arranged to authorize when closing the second flange, opposite movements of spacing and approximation with respect to the second axis.

La gâchette mobile comporte avantageusement des moyens de commande pour assurer le verrouillage de la gâchette dans la position inactive de déblocage inhibant l'action du bloqueur. L'usage de l'appareil est alors réduit à une poulie simple sans bloqueur.The movable trigger advantageously includes means for control to secure the trigger lock in the inactive unlocking position inhibiting the action of the blocker. The use of the device is then reduced to a single pulley without blocker.

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

  • la figure 1 est une vue en perspective de la poulie selon l'invention, le flasque mobile étant en position fermée;
  • la figure 2 montre une vue en éclatée de la poulie de la figure 1;
  • la figure 3 représente une vue en coupe verticale de la poulie de la figure 1;
  • la figure 4 est une vue de la poulie selon la figure 1, après basculement du flasque mobile vers la position ouverte;
  • la figure 5 montre la poulie de la figure 4, après déplacement de la gâchette du bloqueur vers la position inactive de déblocage pour l'insertion de la corde dans la gorge du galet;
  • la figure 6 illustre la poulie de la figure 1, après introduction de la corde, le flasque mobile n'étant pas représenté;
  • les figures 7 à 9 montrent des vues de profil de la poulie de la figure 1, au cours des différentes phases de fermeture du flasque mobile;
  • la figure 10 représente deux possibilités d'usage de la poulie, soit en poulie de renvoi anti-retour, soit en poulie simple sans bloqueur suite à un cadenassage de la gâchette en position inactive de déblocage au moyen d'un mousqueton additionnel ( en pointillé) ;
  • la figure 11 montre une autre application de la poulie comme bloqueur d'appoint pour une remontée le long d'une corde;
  • la figure 12 illustre une autre application de la poulie dans une tyrolienne unidirectionnelle;
  • la figure 13 montre une variante de la poulie équipée d'un levier de commande destiné à positionner la gâchette dans une position ouverte inactive;
  • la figure 14 est une vue identique de la figure 13 lors du déblocage du levier ramenant la gâchette vers la position active.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment, given by way of nonlimiting example and represented in the appended drawings in which:
  • Figure 1 is a perspective view of the pulley according to the invention, the movable flange being in the closed position;
  • Figure 2 shows an exploded view of the pulley of Figure 1;
  • Figure 3 shows a vertical sectional view of the pulley of Figure 1;
  • Figure 4 is a view of the pulley according to Figure 1, after tilting of the movable flange towards the open position;
  • Figure 5 shows the pulley of Figure 4, after moving the trigger of the blocker to the inactive unlocking position for the insertion of the rope in the groove of the roller;
  • Figure 6 illustrates the pulley of Figure 1, after introduction of the rope, the movable flange not being shown;
  • Figures 7 to 9 show side views of the pulley of Figure 1, during the various phases of closing the movable flange;
  • FIG. 10 represents two possibilities for using the pulley, either as a non-return deflection pulley or as a simple pulley without blocker following padlocking of the trigger in the inactive unlocking position by means of an additional carabiner (dotted line) );
  • FIG. 11 shows another application of the pulley as an auxiliary blocker for a rise along a rope;
  • FIG. 12 illustrates another application of the pulley in a one-way zip line;
  • FIG. 13 shows a variant of the pulley equipped with a control lever intended to position the trigger in an inactive open position;
  • Figure 14 is an identical view to Figure 13 when the lever is released bringing the trigger to the active position.

En référence aux figures 1 à 4, une poulie désignée par le repère général 10, comporte un premier flasque 12 fixe servant de support à un premier axe 14 d'un galet 16 rotatif et à un deuxième axe 18 d'une gâchette 20 de blocage constituant un bloqueur 21 intégré. Les deux axes 14,18 sont fixes et s'étendent parallèlement l'un à l'autre selon une direction perpendiculaire au flasque fixe 12. Le galet 16 est monté à rotation libre sur le premier axe 14 avec interposition d'un coussinet 22 autolubrifiant, lequel pourrait bien entendu être remplacé par d'autres organes de roulement. Referring to Figures 1 to 4, a pulley designated by the reference general 10, has a first fixed flange 12 serving as a support to a first axis 14 of a rotary roller 16 and to a second axis 18 a locking trigger 20 constituting an integrated blocker 21. The two axes 14, 18 are fixed and extend parallel to one another. the other in a direction perpendicular to the fixed flange 12. The roller 16 is mounted to rotate freely on the first axis 14 with interposition of a self-lubricating bearing 22, which could well heard to be replaced by other running gear.

Le galet 16 rotatif est muni d'une gorge 24 annulaire pour le guidage de la corde, laquelle peut être bloquée par une surface de coincement 26 de la gâchette 20 lorsque cette dernière se trouve en position active. Un deuxième flasque 28 mobile est monté à rotation sur l'extrémité du premier axe 14 entre une position fermée (figure 1), et une position ouverte (figure 9). Le deuxième flasque 28 est sollicité en appui contre un épaulement 30 du premier axe 14 par l'action d'un joint 32 élastique de forme torique, lequel est agencé dans une rainure 34 annulaire du flasque 28, et obturée par une rondelle 36 externe solidaire du premier axe 14. Le joint 32 peut bien entendu être remplacé par une simple rondelle élastique ondulée.The rotary roller 16 is provided with an annular groove 24 for the rope guide, which can be blocked by a surface of jamming of trigger 20 when it is located in active position. A second mobile flange 28 is mounted at rotation on the end of the first axis 14 between a position closed (Figure 1), and an open position (Figure 9). The second flange 28 is urged to bear against a shoulder 30 of the first axis 14 by the action of an elastic joint 32 of shape toric, which is arranged in an annular groove 34 of the flange 28, and closed by an external washer 36 secured to the first axis 14. The seal 32 can of course be replaced by a simple wavy elastic washer.

L'épaulement 30 fait légèrement saillie de la face frontale du coussinet 22 de manière à générer un jeu axial entre le flasque 28 et le coussinet 22 pour ne pas gêner le mouvement de rotation du flasque mobile 28 par rapport au galet 16. Les flasques 12,28 et le galet 16 sont réalisés en aluminium, tandis que la gâchette 20 est en acier. La surface de coincement 26 comporte une pluralité de picots de retenue 38 destinés à coincer la corde en position active, et une fente 40 centrale pour faciliter l'évacuation de boue ou de glace en provenance de la corde. Le galet 16 et le bloqueur 21 sont agencés tous les deux dans une espace transversal 41 ménagé entre les deux flasques 12,28.The shoulder 30 protrudes slightly from the front face of the bearing 22 so as to generate an axial clearance between the flange 28 and the bearing 22 so as not to hinder the rotational movement of the movable flange 28 relative to the roller 16. The flanges 12,28 and the roller 16 are made of aluminum, while trigger 20 is in steel. The wedging surface 26 has a plurality of retaining pins 38 intended to wedge the rope in the active position, and a central slot 40 to facilitate the evacuation of mud or ice from the rope. The roller 16 and the blocker 21 are both arranged in a transverse space 41 formed between the two flanges 12,28.

Le deuxième axe 18 de la gâchette 20 est tubulaire et est monté en porte-à-faux sur le premier flasque 12. L'une des extrémités 42 est sertie sur le premier flasque 12, tandis que l'extrémité opposée 44 comporte une butée 46 de positionnement axial du corps de la gâchette 20, et un rebord 48 d'emboítement du deuxième flasque 28 lorsque ce dernier est déplacé vers la position fermée. L'orifice 50 interne du deuxième axe 18 a une section circulaire et permet le passage d'un mousqueton d'attache.The second axis 18 of the trigger 20 is tubular and is mounted in overhang on the first flange 12. One of the ends 42 is crimped on the first flange 12, while the end opposite 44 has a stop 46 for axial positioning of the body trigger 20, and a flange 48 of nesting of the second flange 28 when the latter is moved to the closed position. The internal orifice 50 of the second axis 18 has a circular section and allows the passage of a carabiner.

La mise en place du deuxième flasque 28 sur le rebord 48 annulaire d'emboítement est possible grâce à un trou 52 circulaire prévu à l'extrémité libre du deuxième flasque 28 mobile. Le diamètre interne du trou est légèrement supérieur au diamètre extérieur du rebord 48 d'emboítement.The establishment of the second flange 28 on the annular flange 48 fitting is possible thanks to a circular hole 52 provided for the free end of the second movable flange 28. The diameter internal hole is slightly larger than the outside diameter of the rim 48 of nesting.

La présence du joint 32 dans la rainure 34 permet un certain freinage par friction du mouvement de rotation du deuxième flasque 28 autour du premier axe 14, et autorise en plus un léger mouvement de basculement alterné du deuxième flasque 28 au voisinage de la position fermée. Le mouvement de basculement est centré sur le premier axe 14, et est rendu possible grâce à la déformation du joint 32 (figure 3), permettant alternativement un écartement dans le sens de la flèche F1 pour l'alignement du trou 52 avec l'orifice 50, et un rapprochement dans le sens opposé indiqué par la flèche F2 pour l'insertion du trou 52 sur le rebord 48 d'emboítement du deuxième axe 18.The presence of the seal 32 in the groove 34 allows a certain friction braking of the rotational movement of the second flange 28 around the first axis 14, and in addition allows a slight alternating tilting movement of the second flange 28 at close to the closed position. The tilting movement is centered on the first axis 14, and is made possible thanks to the deformation of the seal 32 (FIG. 3), alternately allowing a spacing in the direction of arrow F1 for aligning the hole 52 with orifice 50, and an approximation in the opposite direction indicated by arrow F2 for the insertion of the hole 52 on the flange 48 fitting the second axis 18.

Le corps de la gâchette 20 de blocage est muni d'une lumière 54 de cadenassage permettant le passage d'un mousqueton pour le verrouillage de la gâchette 20 en position inactive. Après retrait du mousqueton de la lumière 54, un ressort de rappel 55 sollicite la gâchette 20 vers la position active de blocage, le ressort étant formé par un ressort de torsion inséré dans une encoche du corps de la gâchette 20.The body of the trigger trigger 20 is provided with a light 54 of lockout allowing the passage of a carabiner for the trigger 20 locked in the inactive position. After withdrawal of the light carabiner 54, a return spring 55 urges trigger 20 towards the active blocking position, the spring being formed by a torsion spring inserted in a notch in the body of trigger 20.

En l'absence de corde à l'intérieur de l'espace 41, la gâchette 20 vient en butée sur le galet 16. En position écartée, une nervure de la gâchette 20 vient en butée contre un taquet d'arrêt du flasque 28.In the absence of a rope inside the space 41, the trigger 20 abuts on the roller 16. In the separated position, a rib of the trigger 20 comes into abutment against a stopper of the flange 28.

L'introduction de la corde 56 dans la poulie 10 s'effectue après abaissement préalable du flasque mobile 28 vers la position ouverte (figure 4), suivi du déplacement de la gâchette 20 vers la position inactive (figure 5) permettant l'insertion de la corde 56 dans la gorge 24 du galet 16.The introduction of the rope 56 into the pulley 10 takes place after prior lowering of the movable flange 28 towards the position open (Figure 4), followed by the movement of the trigger 20 towards the inactive position (figure 5) allowing the insertion of the rope 56 in the groove 24 of the roller 16.

La figure 6 montre une première application d'une poulie de renvoi anti-retour, le flasque mobile 28 n'étant pas représenté pour des raisons de clarté du dessin. La corde 56 est en place sur le galet 16, et la surface de coincement 26 se trouve en contact avec la corde 56 suite à l'action de rappel du ressort 55. En présence d'une force F suffisante appliquée au brin de droite de la corde 56, le hissage d'une masse M par le brin de gauche est rendu possible grâce à l'entraínement de la gâchette dans le sens de déblocage indiqué par la flèche D. Le déblocage par pivotement dans le sens inverse des aiguilles d'une montre de la gâchette 20, est opéré par la friction exercée par la corde 56 sur les picots de la surface 26 lorsque le galet 16 tourne dans le sens des aiguilles d'une montre. En cas de relâchement de la force F, la masse M ne descend pas, grâce à l'action antagoniste du bloqueur 21 anti-retour, dont la gâchette 20 revient automatiquement en sens inverse vers la position active, dans laquelle la surface de coincement 26 exerce une pression importante sur la corde 56.Figure 6 shows a first application of a deflection pulley non-return, the movable flange 28 not being shown for reasons of clarity of the drawing. Rope 56 is in place on the roller 16, and the wedging surface 26 is in contact with the rope 56 following the spring return action 55. In the presence of a sufficient force F applied to the right strand of rope 56, the hoisting of a mass M by the left strand is made possible thanks to the trigger drive in the unlocking direction indicated by arrow D. Unlocking by pivoting in the direction reverse of trigger 20, is operated by the friction exerted by the rope 56 on the pins of the surface 26 when the roller 16 rotates clockwise. If the force F is released, the mass M does not descend, thanks to the antagonistic action of the non-return blocker 21, the trigger 20 automatically returns in the opposite direction to the active position, in which the wedging surface 26 exerts significant pressure on the rope 56.

La fermeture du deuxième flasque 28 mobile est illustrée sur les figures 7 à 9, la corde 56 n'étant pas représentée. Sur la figure 7, le flasque mobile 28 est d'abord tourné dans le sens F3 autour du premier axe 14, suivi en fin de course de fermeture d'un léger mouvement d'écartement dans le sens F1 pour autoriser le passage par dessus le rebord 48 d'emboítement du deuxième axe 18 creux.The closure of the second movable flange 28 is illustrated on the Figures 7 to 9, the rope 56 not being shown. In Figure 7, the movable flange 28 is first turned in the direction F3 around the first axis 14, followed at the end of the closing stroke by a slight spreading movement in direction F1 to allow passage over the flange 48 for nesting the second hollow axis 18.

La figure 8 correspond à la figure 3 illustrant l'étape suivante de refermeture du flasque mobile 28, dans laquelle le trou 52 est en alignement avec l'orifice 50, et prêt à être emboíté sur le rebord 48 du deuxième axe 18.Figure 8 corresponds to Figure 3 illustrating the next step of reclosure of the movable flange 28, in which the hole 52 is in alignment with the orifice 50, and ready to be fitted on the flange 48 of the second axis 18.

La figure 9 montre la phase finale de fermeture du deuxième flasque 28, lequel se trouve emboíté sur l'articulation de la gâchette 20 du bloqueur 21. Le trou 52 du deuxième flasque 28 sert de palier au rebord 48 du deuxième axe 18, ce qui évite un fonctionnement en porte-à-faux de la gâchette 20.Figure 9 shows the final closing phase of the second flange 28, which is fitted on the articulation of the trigger 20 of the blocker 21. The hole 52 of the second flange 28 serves bearing at the edge 48 of the second axis 18, which avoids a trigger overhang 20.

La figure 10 représente deux modes d'utilisation de la poulie 10 selon que la gâchette 20 est libre ou verrouillée. Le passage du mousqueton d'attache 58 à travers le deuxième axe 18 creux et le trou 52 du deuxième flasque 28 permet une utilisation en poulie de renvoi anti-retour. Dans ce cas, la gâchette 20 est libre, et est susceptible de bloquer la corde. L'accrochage du mousqueton 58 à travers l'articulation de la gâchette 20 du bloqueur 21 permet une réduction de l'encombrement du corps de la poulie 10. Le deuxième flasque 28 reste verrouillé en position fermé suite au passage du mousqueton 58 dans l'axe creux 18 d'articulation de la gâchette 20. En cas d'introduction d'un mousqueton 59 additionnel dans la lumière 54 de cadenassage de la gâchette 20 lorsque cette dernière est en position écartée, l'appareil se comporte alors comme une poulie normale sans bloqueur. La gâchette 20 reste verrouillée dans la position ouverte, ce qui écarte en permanence la surface de coincement 28 de la corde 56.FIG. 10 represents two modes of use of the pulley 10 depending on whether the trigger 20 is free or locked. The passage of carabiner 58 through the second hollow axis 18 and the hole 52 of the second flange 28 allows use in pulley of non return return. In this case, the trigger 20 is free, and is likely to block the rope. The hooking of the carabiner 58 to through the articulation of the trigger 20 of the blocker 21 allows a reduction of the size of the pulley body 10. The second flange 28 remains locked in the closed position after the passage of the carabiner 58 in the hollow axis 18 of trigger articulation 20. If an additional carabiner 59 is inserted into the light 54 for padlocking the trigger 20 when the latter is in the open position, the device then behaves like a normal pulley without blocker. Trigger 20 remains locked in the open position, which permanently spreads the surface of jamming 28 of rope 56.

La figure 11 montre une autre application de la poulie 10 comme bloqueur d'appoint pour une remontée le long de la corde 56. Le poids P est appliqué à l'axe 18 de la gâchette 20, et la corde 56 passe entre le galet 16 et la surface de coincement 26.Figure 11 shows another application of pulley 10 as booster for climbing up the rope 56. The weight P is applied to the axis 18 of the trigger 20, and the rope 56 passes between the roller 16 and the wedging surface 26.

La figure 12 représente une application de tyrolienne unidirectionnelle, dans laquelle la poulie 10 se déplace le long d'une corde 56 entre un point de départ A, et un point d'arrivée B situé à un niveau inférieur. La corde 56 passe sous le galet 16, et la masse M est accrochée au deuxième axe 18 de la gâchette 20.Figure 12 shows a zip line application unidirectional, in which the pulley 10 moves along of a rope 56 between a starting point A and a finishing point B located on a lower level. The rope 56 passes under the roller 16, and the mass M is attached to the second axis 18 of the trigger 20.

D'autres applications sont possibles, notamment pour le mouflage, les opérations de secours, et de progression le long d'une corde.Other applications are possible, in particular for hauling, rescue operations, and progression along a rope.

Sur les figures 13 et 14, la gâchette 20 de blocage est pourvue d'un levier de commande 60 articulé sur un axe 62 de la gâchette 20, et présentant une forme coudée. Le levier 60 comporte un premier bras 60a situé entre l'axe 62 et la zone intermédiaire 60b pliée à angle droit, et un deuxième bras 60c servant d'organe de préhension. Le premier bras 60a est destiné à coopérer avec une surface d'appui 64 prévue à la partie supérieure des flasques 12, 28 pour positionner la gâchette 20 dans une position ouverte (figure 13 ), dans laquelle la surface de coincement 28 n'entre pas en contact avec la corde 56.In FIGS. 13 and 14, the blocking trigger 20 is provided with a control lever 60 articulated on an axis 62 of the trigger 20, and having an angled shape. The lever 60 has a first arm 60a located between the axis 62 and the intermediate zone 60b bent at right angle, and a second arm 60c serving as a gripping. The first arm 60a is intended to cooperate with a bearing surface 64 provided at the upper part of the flanges 12, 28 to position the trigger 20 in an open position (Figure 13), in which the wedging surface 28 does not enter in contact with the rope 56.

Il suffit de faire basculer le deuxième bras 60c dans le sens du déblocage DV (figure 14), pour ramener automatiquement la gâchette 20 vers la position active sous l'action de ressort de rappel 55.Just tilt the second arm 60c in the direction of DV unlock (figure 14), to automatically bring the trigger 20 towards the active position under the spring action of reminder 55.

Claims (10)

  1. A pulley comprising :
    a pair of first and second flanges (12, 28) bounding a transverse space (41) in which there is arranged a roller (16) mounted with rotation on a first spindle (14),
    a gorge (24) arranged in the roller (16) to guide the rope (56),
    means for articulation of the second flange (28) on the first spindle (14) enabling a relative movement of said flange between a closed position holding the rope (56) captive in the space (41), and an open position for fitting the rope on the roller (16),
    and a jammer (21) built into the space (41), and comprising a movable tumbler (20) articulated on a second spindle (18) between an active locking position and an inactive unlocking position of the rope (56)
    characterized in that said second spindle(18) is tubular and extending parallel to the first spindle (14), and presents an internal orifice (50) designed to come into alignment with a conjugate hole (52) of the second flange (28) when the latter reaches a position near to the closed position, in such a way as to enable a snap-hook (58) to be attached through the articulation of the tumbler (20) simultaneously resulting in locking of the second flange (28) in the closed position.
  2. The pulley according to claim 1, characterized in that the second spindle (18) of the jammer (21) is mounted overhanging the first flange (12) and comprises first means for axial positioning of the tumbler (20) and second means for engagement of the second flange(28) in the closed position.
  3. The pulley according to claim 2, characterized in that the first means for positioning the tumbler (20) in the space (41) are formed by a stop (46) arranged near to the end (44) of the second spindle (18) facing the second flange (28).
  4. The pulley according to claim 3, characterized in that the second means for engaging the second flange (28) are formed by an annular edge (48) protruding out from the stop (46) and arranged coaxially with the orifice (50) of the second spindle (18).
  5. The pulley according to claim 2 or 4, characterized in that the means for articulation of the second flange (28) on the first spindle (14) are arranged to authorize when closing of the second flange (28) takes place opposite movements away from and towards the second spindle (18).
  6. The pulley according to claim 5, characterized in that a seal (32) is fitted on the first spindle (14) in an annular gorge (34) of the second flange (28) outside the space (41), said seal (32) cooperating with a washer (36) to urge the second flange (28) against an internal shoulder (30) of the first spindle (14), whilst enabling rocking of this flange near to the closed position following deformation of the seal (32).
  7. The pulley according to claim 6, characterized in that the rotary roller (16) is mounted on the first fixed spindle (14) with bearing means interposed, notably a self-oiling bearing (22), or ball-bearings.
  8. The pulley according to claim 1, characterized in that the movable tumbler (20) comprises operating means to perform locking of the tumbler (20) in the inactive unlocking position, so as to inhibit the action of the jammer (21).
  9. The pulley according to claim 8, characterized in that the pivoting tumbler (20) cooperates with a return spring (55) urging the jammer (21) to the active locking position after the operating means have been actuated.
  10. The pulley according to claim 8, characterized in that the operating means comprise a lever (60) articulated on a spindle (62) of the tumbler (20) and presenting an angled shape designed to cooperate with the bearing surface (64) of the flanges (12, 28) when the tumbler (20) is in the open position in which the jamming surface (28) does not enter into contact with the rope (56).
EP97410043A 1996-04-25 1997-04-11 Pulley with pivoting side plate and integral clamp Expired - Lifetime EP0803268B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605463 1996-04-25
FR9605463A FR2748078B1 (en) 1996-04-25 1996-04-25 PULLEY WITH PIVOTING FLANGE AND INTEGRATED LOCKER

Publications (2)

Publication Number Publication Date
EP0803268A1 EP0803268A1 (en) 1997-10-29
EP0803268B1 true EP0803268B1 (en) 2003-01-22

Family

ID=9491743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97410043A Expired - Lifetime EP0803268B1 (en) 1996-04-25 1997-04-11 Pulley with pivoting side plate and integral clamp

Country Status (9)

Country Link
US (1) US5845894A (en)
EP (1) EP0803268B1 (en)
JP (1) JP3961067B2 (en)
AU (1) AU713327B2 (en)
CZ (1) CZ289602B6 (en)
DE (1) DE69718547T2 (en)
ES (1) ES2191160T3 (en)
FR (1) FR2748078B1 (en)
RU (1) RU2174941C2 (en)

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Also Published As

Publication number Publication date
AU1903097A (en) 1997-10-30
US5845894A (en) 1998-12-08
JP3961067B2 (en) 2007-08-15
DE69718547D1 (en) 2003-02-27
EP0803268A1 (en) 1997-10-29
JPH1036086A (en) 1998-02-10
FR2748078A1 (en) 1997-10-31
CZ115897A3 (en) 1997-11-12
AU713327B2 (en) 1999-12-02
RU2174941C2 (en) 2001-10-20
DE69718547T2 (en) 2003-11-20
ES2191160T3 (en) 2003-09-01
FR2748078B1 (en) 1998-06-12
CZ289602B6 (en) 2002-03-13

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