EP0803268A1 - 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
EP0803268A1
EP0803268A1 EP97410043A EP97410043A EP0803268A1 EP 0803268 A1 EP0803268 A1 EP 0803268A1 EP 97410043 A EP97410043 A EP 97410043A EP 97410043 A EP97410043 A EP 97410043A EP 0803268 A1 EP0803268 A1 EP 0803268A1
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EP
European Patent Office
Prior art keywords
flange
axis
trigger
pulley
rope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97410043A
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German (de)
French (fr)
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EP0803268B1 (en
Inventor
Jean Marc Hede
Paul Petzl
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Zedel SAS
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Zedel SAS
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Publication of EP0803268B1 publication Critical patent/EP0803268B1/en
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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

  • Simple pulleys with oscillating flange are used in a conventional manner to produce lifting devices, in particular hoists, hauling systems, deflections, as well as devices for horizontal progression such as the zip line.
  • the rotary roller is mounted idly on the axis of the pulley. If the devices must respond for safety measures to non-return functions, it is essential to associate with the pulley a blocker intended to block the rope when the handling force is released.
  • the blocker is formed by a separate device connected to the pulley by a connecting carabiner. The assembly 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 pulley with pivoting flange and reliable non-return having a reduced bulk.
  • the pulley according to the invention is equipped with more than one 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, said second axis being tubular extending parallel to the first axis, and having an internal orifice intended to come into alignment with a conjugate hole of the second flange when the latter arrives in the vicinity of the closed position, so as to allow the hooking of a carabiner through the joint of the trigger, simultaneously causing the locking the second flange in the closed position.
  • the attachment of the carabiner hook through the hinge pin reduces the size of the pulley while ensuring safety, because the retractable flange remains positively locked in the closed position preventing any escape of the rope.
  • 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 fitting the second flange in position closed.
  • the first means for positioning the trigger in space are formed by a stop arranged in the vicinity of the end of the second axis opposite the second flange.
  • the second means for fitting the second flange are constituted by 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 allow, when the second flange is closed, opposite movements of spacing and approximation with respect to the second axis.
  • the movable trigger advantageously comprises control means for ensuring the locking of the trigger 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 general reference 10 has a first fixed flange 12 serving to support a first axis 14 of a rotating roller 16 and a second axis 18 of a trigger 20 for blocking constituting an integrated blocker 21.
  • the two axes 14, 18 are fixed and extend parallel to each other in a direction perpendicular to the fixed flange 12.
  • the roller 16 is mounted for free rotation on the first axis 14 with the interposition of a self-lubricating bearing 22 , which could of course be replaced by other running gear.
  • the rotary roller 16 is provided with an annular groove 24 for guiding the rope, which can be blocked by a wedging surface 26 of the trigger 20 when the latter is in the active position.
  • a second movable flange 28 is rotatably mounted on the end of the first axis 14 between a closed position ( Figure 1), and an open position ( Figure 9).
  • the second flange 28 is biased in abutment against a shoulder 30 of the first axis 14 by the action of an elastic seal 32 of toric shape, which is arranged in an annular groove 34 of the flange 28, and closed by an external washer 36 integral of 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 pad 22 so as to generate an axial clearance between the flange 28 and the pad 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 the trigger 20 is made of steel.
  • the wedging surface 26 comprises 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 opposite end 44 has a stop 46 axial positioning of the body of the trigger 20, and a flange 48 for fitting the second flange 28 when the latter is moved to the closed position.
  • the internal hole 50 of the second axis 18 has a circular section and allows the passage of a fastening carabiner.
  • the establishment of the second flange 28 on the annular flange 48 of interlocking is possible thanks to a circular hole 52 provided at the free end of the second movable flange 28.
  • the diameter internal of the hole is slightly greater than the outside diameter of the interlocking rim 48.
  • the presence of the seal 32 in the groove 34 allows some friction braking of the rotation 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 in the vicinity of the closed position.
  • the tilting movement is centered on the first axis 14, and is made possible by the deformation of the seal 32 ( Figure 3), alternately allowing a spacing in the direction of the arrow F1 for the alignment of the hole 52 with the orifice 50, and an approximation in the opposite direction indicated by the arrow F2 for the insertion of the hole 52 on the flange 48 for interlocking the second axis 18.
  • the body of the locking trigger 20 is provided with a padlocking light 54 allowing the passage of a carabiner for locking the trigger 20 in the inactive position. After removal of the carabiner from the light 54, a return spring 55 biases the trigger 20 towards the active locking position, the spring being formed by a torsion spring inserted in a notch in the body of the 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 abuts against a stopper stopper of the flange 28.
  • the introduction of the rope 56 into the pulley 10 is carried out after prior lowering of the movable flange 28 towards the open position (FIG. 4), followed by the displacement of the trigger 20 towards the inactive position (FIG. 5) allowing the insertion of the cord 56 in the groove 24 of the roller 16.
  • FIG. 6 shows a first application of a non-return deflection pulley, the movable flange 28 not being shown for reasons of clarity of the drawing.
  • the rope 56 is in place on the roller 16, and the wedging surface 26 is in contact with the rope 56 following the return action of the spring 55.
  • F a sufficient force applied to the right strand of rope 56
  • Unblocking by pivoting in the anticlockwise direction of the trigger 20 is effected by the friction exerted by the rope 56 on the pins of the surface 26 when the roller 16 rotates clockwise.
  • FIGS. 7 to 9 The closure of the second movable flange 28 is illustrated in FIGS. 7 to 9, the cord 56 not being shown.
  • the movable flange 28 is firstly turned in the direction F3 around the first axis 14, followed at the end of the closing stroke by a slight movement of separation in the direction F1 to allow passage over the flange 48 for nesting the second hollow axis 18.
  • FIG. 8 corresponds to FIG. 3 illustrating the next step of reclosing the movable flange 28, in which the hole 52 is in alignment with the orifice 50, and ready to be fitted onto the flange 48 of the second axis 18.
  • FIG. 9 shows the final phase of closing the second flange 28, which is fitted onto the joint of the trigger 20 of the blocker 21.
  • the hole 52 of the second flange 28 serves as a bearing for the flange 48 of the second axis 18, which avoids a cantilevered operation of the trigger 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 the carabiner 58 through the second hollow axis 18 and the hole 52 of the second flange 28 allows use in a non-return pulley.
  • the trigger 20 is free, and is capable of blocking the rope.
  • the hooking of the carabiner 58 through the articulation of the trigger 20 of the blocker 21 allows a reduction in the size of the pulley body 10.
  • the second flange 28 remains locked in the closed position following the passage of the carabiner 58 in the hollow axis 18 of articulation of the trigger 20.
  • the device In the event of introduction of an additional carabiner 59 into the lumen 54 of padlocking the trigger 20 when this the latter is in the spread position, the device then behaves like a normal pulley without blocker. The trigger 20 remains locked in the open position, which permanently separates the wedging surface 28 from the rope 56.
  • FIG. 11 shows another application of the pulley 10 as an additional blocker for a rise along 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.
  • FIG. 12 represents a one-way zip line application, in which the pulley 10 moves along a rope 56 between a starting point A and an ending point B located at 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 comprises a first arm 60a situated between the axis 62 and the intermediate zone 60b folded at a right angle, and a second arm 60c serving as a gripping member.
  • 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 (FIG. 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)

Abstract

The pulley block, for use in lifting tackle, consists of a grooved roller (16) between two side plates (12,28). One plate can be opened for passing a rope round the pulley or removing it. Above the roller the pulley block has a locking element (21) with a spiked grooved surface (26) which allows the rope to run over the pulley in one direction but prevents it from running in the other. The locking element is mounted on a hollow pivot (18) which lies parallel to the pulley roller pivot (14). A spring clip can be passed through the hollow pivot and corresponding apertures (52) in the pulley block side plates, locking the second plate (28) in its closed position.

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,
  • et 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.
The invention relates to a pulley comprising:
  • a pair of first and second flanges delimiting a transverse space in which is arranged a roller mounted for rotation on a first axis,
  • a groove in the roller for guiding the rope,
  • and 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 positioning of the rope on the roller.

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.Simple pulleys with oscillating flange are used in a conventional manner to produce lifting devices, in particular hoists, hauling systems, deflections, as well as devices for horizontal progression such as the zip line. The rotary roller is mounted idly on the axis of the pulley. If the devices must respond for safety measures to non-return functions, it is essential to associate with the pulley a blocker intended to block the rope when the handling force is released. The blocker is formed by a separate device connected to the pulley by a connecting carabiner. The assembly 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 pulley with pivoting flange and reliable non-return having a reduced bulk.

La poulie selon l'invention est équipée de plus d'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, ledit deuxième axe étant tubulaire en s'étendant parallèlement au premier axe, et présentant 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 equipped with more than one 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, said second axis being tubular extending parallel to the first axis, and having an internal orifice intended to come into alignment with a conjugate hole of the second flange when the latter arrives in the vicinity of the closed position, so as to allow the hooking of a carabiner through the joint of the trigger, simultaneously causing the locking the second flange in the 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.The attachment of the carabiner hook through the hinge pin reduces the size of the pulley while ensuring safety, because the retractable flange remains positively locked in the closed position preventing any escape of the rope.

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'emboîtement 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'emboîtement 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 fitting the second flange in position closed. The first means for positioning the trigger in space are formed by a stop arranged in the vicinity of the end of the second axis opposite the second flange. The second means for fitting the second flange are constituted by 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 allow, when the second flange is closed, 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 comprises control means for ensuring the locking of the trigger 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 shows 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 additional 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 general reference 10, has a first fixed flange 12 serving to support a first axis 14 of a rotating roller 16 and a second axis 18 of a trigger 20 for blocking constituting an integrated blocker 21. The two axes 14, 18 are fixed and extend parallel to each other in a direction perpendicular to the fixed flange 12. The roller 16 is mounted for free rotation on the first axis 14 with the interposition of a self-lubricating bearing 22 , which could of course 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 guiding the rope, which can be blocked by a wedging surface 26 of the trigger 20 when the latter is in the active position. A second movable flange 28 is rotatably mounted on the end of the first axis 14 between a closed position (Figure 1), and an open position (Figure 9). The second flange 28 is biased in abutment against a shoulder 30 of the first axis 14 by the action of an elastic seal 32 of toric shape, which is arranged in an annular groove 34 of the flange 28, and closed by an external washer 36 integral of 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 pad 22 so as to generate an axial clearance between the flange 28 and the pad 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 the trigger 20 is made of steel. The wedging surface 26 comprises 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'emboîtement 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 opposite end 44 has a stop 46 axial positioning of the body of the trigger 20, and a flange 48 for fitting the second flange 28 when the latter is moved to the closed position. The internal hole 50 of the second axis 18 has a circular section and allows the passage of a fastening carabiner.

La mise en place du deuxième flasque 28 sur le rebord 48 annulaire d'emboîtement 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'emboîtement.The establishment of the second flange 28 on the annular flange 48 of interlocking is possible thanks to a circular hole 52 provided at the free end of the second movable flange 28. The diameter internal of the hole is slightly greater than the outside diameter of the interlocking rim 48.

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'emboîtement du deuxième axe 18.The presence of the seal 32 in the groove 34 allows some friction braking of the rotation 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 in the vicinity of the closed position. The tilting movement is centered on the first axis 14, and is made possible by the deformation of the seal 32 (Figure 3), alternately allowing a spacing in the direction of the arrow F1 for the alignment of the hole 52 with the orifice 50, and an approximation in the opposite direction indicated by the arrow F2 for the insertion of the hole 52 on the flange 48 for interlocking 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 locking trigger 20 is provided with a padlocking light 54 allowing the passage of a carabiner for locking the trigger 20 in the inactive position. After removal of the carabiner from the light 54, a return spring 55 biases the trigger 20 towards the active locking position, the spring being formed by a torsion spring inserted in a notch in the body of the 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 abuts against a stopper 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 is carried out after prior lowering of the movable flange 28 towards the open position (FIG. 4), followed by the displacement of the trigger 20 towards the inactive position (FIG. 5) allowing the insertion of the cord 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'entraînement 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.FIG. 6 shows a first application of a non-return deflection pulley, the movable flange 28 not being shown for reasons of clarity of the drawing. The rope 56 is in place on the roller 16, and the wedging surface 26 is in contact with the rope 56 following the return action of the spring 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 by pulling the trigger in the unlocking direction indicated by arrow D. Unblocking by pivoting in the anticlockwise direction of the trigger 20, is effected by the friction exerted by the rope 56 on the pins of the surface 26 when the roller 16 rotates clockwise. In the event of release of the force F, the mass M does not descend, thanks to the antagonistic action of the non-return blocker 21, the trigger 20 of which 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'emboîtement du deuxième axe 18 creux.The closure of the second movable flange 28 is illustrated in FIGS. 7 to 9, the cord 56 not being shown. In FIG. 7, the movable flange 28 is firstly turned in the direction F3 around the first axis 14, followed at the end of the closing stroke by a slight movement of separation in the 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 emboîté sur le rebord 48 du deuxième axe 18.FIG. 8 corresponds to FIG. 3 illustrating the next step of reclosing the movable flange 28, in which the hole 52 is in alignment with the orifice 50, and ready to be fitted onto the flange 48 of the second axis 18.

La figure 9 montre la phase finale de fermeture du deuxième flasque 28, lequel se trouve emboîté 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.FIG. 9 shows the final phase of closing the second flange 28, which is fitted onto the joint of the trigger 20 of the blocker 21. The hole 52 of the second flange 28 serves as a bearing for the flange 48 of the second axis 18, which avoids a cantilevered operation of the trigger 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 the carabiner 58 through the second hollow axis 18 and the hole 52 of the second flange 28 allows use in a non-return pulley. In this case, the trigger 20 is free, and is capable of blocking the rope. The hooking of the carabiner 58 through the articulation of the trigger 20 of the blocker 21 allows a reduction in the size of the pulley body 10. The second flange 28 remains locked in the closed position following the passage of the carabiner 58 in the hollow axis 18 of articulation of the trigger 20. In the event of introduction of an additional carabiner 59 into the lumen 54 of padlocking the trigger 20 when this the latter is in the spread position, the device then behaves like a normal pulley without blocker. The trigger 20 remains locked in the open position, which permanently separates the wedging surface 28 from the 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.FIG. 11 shows another application of the pulley 10 as an additional blocker for a rise along 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.FIG. 12 represents a one-way zip line application, in which the pulley 10 moves along a rope 56 between a starting point A and an ending point B located at 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 comprises a first arm 60a situated between the axis 62 and the intermediate zone 60b folded at a right angle, and a second arm 60c serving as a gripping member. 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 (FIG. 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.It suffices to tilt the second arm 60c in the unlocking direction DV (FIG. 14), to automatically return the trigger 20 to the active position under the action of return spring 55.

Claims (10)

Poulie comportant: - une paire de premier et deuxième flasques (12, 28) délimitant un espace (41) transversal dans lequel est agencé un galet (16) monté à rotation sur un premier axe (14), - une gorge (24) ménagée dans le galet (16) pour le guidage de la corde (56), - et des moyens d'articulation du deuxième flasque (28) sur le premier axe (14) autorisant un déplacement relatif dudit flasque entre une position fermée emprisonnant la corde (56) dans l'espace (56) , et une position ouverte pour la mise en place de la corde sur le galet (16), caractérisée en ce que la poulie (10) est équipée de plus d'un bloqueur (21) intégré dans l'espace (41), et comprenant une gâchette (20) mobile articulée sur un deuxième axe (18) entre une position active de blocage et une position inactive de déblocage de la corde (56), ledit deuxième axe (18) étant tubulaire en s'étendant parallèlement au premier axe (14), et présentant un orifice (50) interne destiné à venir en alignement avec un trou (52) conjugué du deuxième flasque (28) lorsque ce dernier arrive au voisinage de la position fermée, de manière à autoriser l'accrochage d'un mousqueton (58) à travers l'articulation de la gâchette (20), en provoquant simultanément le verrouillage du deuxième flasque (28) en position fermée.Pulley comprising: - a pair of first and second flanges (12, 28) delimiting a transverse space (41) in which is arranged a roller (16) rotatably mounted on a first axis (14), - a groove (24) formed in the roller (16) for guiding the rope (56), - And articulation means of the second flange (28) on the first axis (14) allowing relative movement of said flange between a closed position trapping the rope (56) in the space (56), and an open position for the placing the rope on the roller (16), characterized in that the pulley (10) is equipped with more than one blocker (21) integrated in the space (41), and comprising a movable trigger (20) articulated on a second axis (18) between an active position of blocking and an inactive unlocking position of the rope (56), said second axis (18) being tubular by extending parallel to the first axis (14), and having an internal orifice (50) intended to come into alignment with a hole (52) conjugate of the second flange (28) when the latter arrives in the vicinity of the closed position, so as to allow the hooking of a carabiner (58) through the articulation of the trigger (20), simultaneously causing locking the second flange (28) in the closed position. Poulie selon, la revendication 1, caractérisée en ce que le deuxième axe (18) du bloqueur (21) est monté en porte-à-faux sur le premier flasque (12), et comporte des premiers moyens de positionnement axial de la gâchette (20), et des deuxièmes moyens d'emboîtement du deuxième flasque (28) en position fermée.Pulley according to claim 1, characterized in that the second axis (18) of the blocker (21) is cantilevered on the first flange (12), and comprises first means of axial positioning of the trigger ( 20), and second means for fitting the second flange (28) in the closed position. Poulie selon la revendication 2, caractérisée en ce que les premiers moyens de positionnement de la gâchette (20) dans l'espace (41) sont formés par une butée (46) agencée au voisinage de l'extrémité (44) du deuxième axe (18) en regard du deuxième flasque (28).Pulley according to claim 2, characterized in that the first means for positioning the trigger (20) in the space (41) are formed by a stop (46) arranged in the vicinity of the end (44) of the second axis ( 18) opposite the second flange (28). Poulie selon la revendication 3, caractérisée en ce que les deuxièmes moyens d'emboîtement du deuxième flasque (28) sont constitués par un rebord (48) annulaire faisant saillie de la butée (46) et disposé coaxialement avec l'orifice (50) du deuxième axe (18).Pulley according to claim 3, characterized in that the second means for fitting the second flange (28) consist of an annular flange (48) projecting from the stop (46) and arranged coaxially with the orifice (50) of the second axis (18). Poulie selon la revendication 2 ou 4, caractérisée en ce que les moyens d'articulation du deuxième flasque (28) sur le premier axe (14) sont agencés pour autoriser lors de la fermeture du deuxième flasque (28), des mouvements opposés d'écartement et de rapprochement par rapport au deuxième axe (18).Pulley according to claim 2 or 4, characterized in that the means of articulation of the second flange (28) on the first axis (14) are arranged to allow, when the second flange (28) is closed, opposite movements of spacing and approximation with respect to the second axis (18). Poulie selon la revendication 5, caractérisée en ce qu' un joint (32) est monté sur le premier axe (14) dans une rainure (34) annulaire du deuxième flasque (28) à l'extérieur de l'espace (41), ledit joint (32) coopérant avec une rondelle (36) pour solliciter le deuxième flasque (28) en appui contre un épaulement (30) interne du premier axe (14), tout en autorisant son basculement au voisinage de la position fermée suite à la déformation du joint (32).Pulley according to claim 5, characterized in that a seal (32) is mounted on the first axis (14) in an annular groove (34) of the second flange (28) outside the space (41), said seal (32) cooperating with a washer (36) to urge the second flange (28) to bear against an internal shoulder (30) of the first axis (14), while allowing it to tilt in the vicinity of the closed position following the deformation of the seal (32). Poulie selon la revendication 6, caractérisée en ce que le galet (16) rotatif est monté sur le premier axe (14) fixe avec interposition des moyens de roulement, notamment un coussinet (22) autolubrifiant, ou des roulements à billes.Pulley according to claim 6, characterized in that the rotary roller (16) is mounted on the first fixed axis (14) with interposition of the rolling means, in particular a self-lubricating bearing (22), or ball bearings. Poulie selon la revendication 1, caractérisée en ce que la gâchette (20) mobile comporte des moyens de commande pour assurer le verrouillage de la gâchette (20) dans la position inactive de déblocage, de manière à inhiber l'action du bloqueur (21).Pulley according to claim 1, characterized in that the movable trigger (20) comprises control means for ensuring the locking of the trigger (20) in the inactive unlocking position, so as to inhibit the action of the blocker (21) . Poulie selon la revendication 8, caractérisée en ce que la gâchette (20) pivotante coopère avec un ressort de rappel (55) sollicitant le bloqueur (21) vers la position active de blocage après l'actionnement des moyens de commandePulley according to claim 8, characterized in that the pivoting trigger (20) cooperates with a return spring (55) urging the blocker (21) towards the active blocking position after actuation of the control means Poulie selon la revendication 8, caractérisée en ce que les moyens de commande comportent un levier (60) articulé sur un axe (62) de la gâchette (20), et présentant une forme coudée destinée à coopérer avec une surface d'appui (64) des flasques (12, 28) lorsque la gâchette (20) se trouve dans une position ouverte, dans laquelle la surface de coincement (28) n'entre pas en contact avec la corde (56).Pulley according to claim 8, characterized in that the control means comprise a lever (60) articulated on an axis (62) of the trigger (20), and having an angled shape intended to cooperate with a bearing surface (64 ) flanges (12, 28) when the trigger (20) is in an open position, in which the wedging surface (28) does not come 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)

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FR9605463A FR2748078B1 (en) 1996-04-25 1996-04-25 PULLEY WITH PIVOTING FLANGE AND INTEGRATED LOCKER
FR9605463 1996-04-25

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

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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)
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CN103816649A (en) * 2012-11-16 2014-05-28 齐德公司 Safety apparatus on a rope with locking under load
FR3000898A1 (en) * 2013-01-16 2014-07-18 Zedel SAFETY APPARATUS ON ROPE HAVING A INDICATING INDICATOR INDICATOR STATE INDICATOR FOR CLOSING FLASKS
US9289634B2 (en) 2013-01-16 2016-03-22 Zedel Safety apparatus on a rope with indicator for indicating the state of closing of the flange-plates
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FR3011475A1 (en) * 2013-10-07 2015-04-10 Simond Ets DESCENDOR-INSURER AUTOBLOQUANT
US9573002B2 (en) 2013-10-07 2017-02-21 Etablissements Simond Self-blocking descender-belay device
GB2518573A (en) * 2015-01-23 2015-03-25 Internat Safety Components Ltd Zipwire trolley braking
GB2518573B (en) * 2015-01-23 2015-10-28 Internat Safety Components Ltd Zipwire trolley braking
US10023208B2 (en) 2015-01-23 2018-07-17 International Safety Components Ltd. Zipwire trolley braking
CN110371881A (en) * 2018-04-13 2019-10-25 特里麦吉尼尔斯有限公司 The pulley assembly of the rope channel of modified cross section
CN110371881B (en) * 2018-04-13 2022-09-06 特里麦吉尼尔斯有限公司 Pulley assembly with rope passage of varying cross-section
US12070630B2 (en) 2018-04-13 2024-08-27 Treemagineers Ltd. Roped access system
FR3088828A1 (en) * 2018-11-28 2020-05-29 Zedel INSURANCE DEVICE
EP3659675A3 (en) * 2018-11-28 2020-06-10 Zedel Safety device
IT202100025394A1 (en) * 2021-10-04 2023-04-04 Aludesign Spa MULTI-PURPOSE DEVICE EQUIPPED WITH A LOCKING CAM AND A PULLEY FOR A SAFETY ROPE
WO2023057889A1 (en) * 2021-10-04 2023-04-13 Aludesign S.P.A. Multifunction device equipped with a locking cam and a pulley for a safety rope
WO2024079336A1 (en) 2022-10-13 2024-04-18 Gulli Concept Pulley for a zipline provided with a non-return member
FR3140850A1 (en) 2022-10-13 2024-04-19 Gulli Concept Pulley for zip line equipped with an anti-return device

Also Published As

Publication number Publication date
RU2174941C2 (en) 2001-10-20
FR2748078B1 (en) 1998-06-12
DE69718547D1 (en) 2003-02-27
JPH1036086A (en) 1998-02-10
DE69718547T2 (en) 2003-11-20
AU713327B2 (en) 1999-12-02
FR2748078A1 (en) 1997-10-31
EP0803268B1 (en) 2003-01-22
CZ115897A3 (en) 1997-11-12
AU1903097A (en) 1997-10-30
CZ289602B6 (en) 2002-03-13
JP3961067B2 (en) 2007-08-15
ES2191160T3 (en) 2003-09-01
US5845894A (en) 1998-12-08

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