EP3763425A1 - Riemenscheibe mit gesicherter öffnung - Google Patents

Riemenscheibe mit gesicherter öffnung Download PDF

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Publication number
EP3763425A1
EP3763425A1 EP20181528.9A EP20181528A EP3763425A1 EP 3763425 A1 EP3763425 A1 EP 3763425A1 EP 20181528 A EP20181528 A EP 20181528A EP 3763425 A1 EP3763425 A1 EP 3763425A1
Authority
EP
European Patent Office
Prior art keywords
flange
finger
blocker
rotation
actuation zone
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
EP20181528.9A
Other languages
English (en)
French (fr)
Other versions
EP3763425B1 (de
Inventor
Christophe Quillard
Benoît Vuillermoz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zedel SAS
Original Assignee
Zedel SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zedel SAS filed Critical Zedel SAS
Publication of EP3763425A1 publication Critical patent/EP3763425A1/de
Application granted granted Critical
Publication of EP3763425B1 publication Critical patent/EP3763425B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
    • B66D3/08—Arrangements of sheaves
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63G—MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT
    • A63G21/00—Chutes; Helter-skelters
    • A63G21/22—Suspended slideways

Definitions

  • the invention relates to a double pulley.
  • the double pulley In many fields, it is known to use a double pulley which must move on a cable.
  • the double pulley is commonly used when making zip lines with a user sliding along the cable.
  • the double pulley has two sheaves which are mounted for rotation.
  • the cable is installed inside the pulley in contact with the two sheaves.
  • the double pulley has a connection point that is used to make the mechanical connection between the user suspended from the pulley and the cable that holds the pulley.
  • the two sheaves are mounted in line so that the two sheaves run on the cable.
  • the pulley defines a housing for the cable and a slot for introducing or extracting the cable.
  • the slot By means of the slot, the cable can be introduced into the housing to come into contact with the sheaves. After use, the cable is extracted from the housing by means of the slot.
  • an openable finger which has a first position closing the slot and a second position which leaves the slot open.
  • the openable finger is rotatably mounted and the user presses on the finger so as to allow or prevent the introduction of the cable into the housing or its extraction.
  • a locking system which maintains the finger in the position closing the slot.
  • the locking system is configured to prevent a single press on the openable finger from opening the slot.
  • a locking system is used in the pulley marketed by the company International Safety Components Ltd. under the name Zippey TM.
  • the opening of the slot is not obtained by pressing on the openable finger but by pressing on a rod connected to the openable finger.
  • the openable finger is rotatably mounted on the rear flange to come into contact with the front flange and the locking rod projects from the rear flange.
  • the user presses on the rod to move it away from the sheaves, which causes the mobile finger to rotate.
  • the double pulley is remarkable in that the blocker defines an actuation zone separated from the first flange by the finger, the rotation of the actuation zone from the blocking position to the unlocking position corresponding to a distance from the actuation zone relative to the second flange, said rotation of the actuation zone causing pivoting of the rod.
  • the actuation zone and the rod are separated by a blocker rotation shaft so that said rotation of the actuation zone causes the rod to move towards the sheaves.
  • the actuation zone is a concave actuation zone having a bearing wall extending from the rotation shaft in a direction parallel to the axis of rotation of the sheaves when the actuation zone is in the locked position.
  • the concave actuation zone has a stop wall extending from the rotation shaft in the direction of the second flange when the actuation zone is in the blocking position.
  • the stop wall and the second flange define a slot opening into the housing intended to receive a cable, the stop wall separating the stopper wall. support wall and the second flange, the slot being intended to allow the passage of the cable.
  • the stop wall is separated from the second flange by a distance less than the separation distance between the first flange and the second flange in the housing.
  • the movement from the locked position to the unlocked position corresponds to a rotation of the actuation zone by an angle greater than or equal to 90 °.
  • the displacement from the locked position to the unlocked position corresponds to a rotation of the actuation zone by an angle strictly greater than 95 °.
  • the blocker has no projecting zone from the external face of the first flange.
  • the finger has an obstacle projecting from the internal face of the second flange and directed towards the first flange when the rod is in the closed position, the distance between the obstacle and the first flange is less than 12mm and in which the first flange is provided with a through hole or a recess arranged to allow the passage of the obstacle when the finger is in the open position.
  • the finger defines a hook resting on an orifice in the second flange.
  • the invention also relates to a displacement device which provides better safety than the configurations of the prior art while remaining easy to use.
  • the displacement device comprises a cable and a double pulley according to one of the preceding configurations, the cable being arranged in the housing.
  • a double pulley device 1 comprises a pair of sheaves 2 which are advantageously of identical structures.
  • the pair of sheaves 2 is mounted in line.
  • Each sheave 2 is mounted for free rotation on a shaft 3.
  • the two shafts 3 are fixed to a support bracket 4.
  • the support bracket 4 is advantageously in the shape of an inverted U.
  • the support bracket 4 can be a metal support bracket.
  • the support bracket 4 can be formed by a sheet deformed to define a U or substantially a U.
  • the support bracket 4 can be produced by assembling several elements.
  • Such a device is intended to form part of a movement device used for the air transport of a person during a zip line crossing on a rope or an insurance cable.
  • the double pulley 1 runs along a fixed cable 5.
  • the support bracket 4 has a first flange 6 and a second flange 7.
  • the two sheaves 2 are mounted to be able to rotate by means of two rotation shafts 3.
  • the two rotation shafts 3 are installed parallel to each other.
  • the two rotation shafts 3 define two axes of rotation different.
  • the two axes of rotation 3 belong to the same plane which divides each sheave 2 into two equal parts.
  • the two shafts 3 are mounted fixed on the caliper 4.
  • the two rotation shafts 3 are fixed to the first and second flanges 6 and 7.
  • the two sheaves 2 are mounted between the first and second flanges 6 and 7.
  • the two sheaves 2 face the internal faces of the two flanges 6 and 7.
  • the double pulley 1 comprises a finger 8 which is configured to be movable between a first position and a second position.
  • the mobility of the finger 8 makes it possible to define the slot for introducing or extracting the cable 5.
  • the finger 8 closes the slot.
  • the cable 5 arranged in the housing cannot be extracted.
  • the finger 8 defines a slot with the second flange 7 to allow the introduction or extraction of the cable 5.
  • the finger 8 is spaced from the second flange 7 by a distance ensuring the passage of the cable. 5.
  • the housing is defined in part by the first flange 6, the second flange 7, the finger 8 and the two sheaves 2.
  • the finger 8 is rotatably mounted between the two positions to define or not the slot.
  • the finger 8 is mounted around a rotation shaft which is fixed to the first flange 6.
  • the rotation shaft defines an axis of rotation of the finger 8 which is advantageously arranged parallel to an axis which passes through the two axes of rotation. of the two sheaves 2 and which is perpendicular to the two axes of rotation of the sheaves 2.
  • a spring connected to the first flange 6 and to the finger 8.
  • the spring is configured to move the movable finger 8 towards the closed position and thus close the slot in the absence of stress.
  • the spring applies a force to the finger 8 to direct it towards the second flange 7.
  • the finger 8 is associated with a blocker 9 which ensures the locking of the finger 8 in the closed position even with a mechanical stressing of the finger 8.
  • the blocker 9 is mounted on the finger 8 so as to move with the movements of the finger.
  • the blocker 9 has an actuation zone 10 which is mounted on the finger 8. The actuation zone 10 is intended to cooperate with the user's finger.
  • the blocker 9 is movably mounted between a first position and a second position.
  • the first position of the blocker 9 is a blocking position which maintains the movable finger 8 in the closed position.
  • the second position of the blocker 9 is an unlocking position which allows the movement of the finger 8 between the closed position and the open position.
  • the blocker 9 is mounted to move relative to the finger 8 and relative to the first flange 6.
  • the blocker 9 is mounted to rotate relative to the finger 8. It is particularly advantageous to use a blocker 9 mounted to rotate around a rotation shaft 11 which is mounted fixedly on the finger 8.
  • the zone d 'actuation 10 is mounted to rotate about the shaft 11.
  • the axis of rotation of the blocker 9 is different from the axis of rotation of the finger 8.
  • the rotation shaft 11 of the blocker 9 defines an axis of rotation which is parallel to the axis of rotation of the movable finger 8.
  • the axis of rotation of the blocker 9 is arranged between the axis of rotation of the movable finger 8 and the point of contact with the second flange 7.
  • the blocker 9 In the blocking position, the blocker 9 bears on the first flange 6 directly or indirectly for example by means of a rod 12. The bearing is opposed to the movement of the finger 8 from the closed position to the open position. . In another configuration, the blocker 9 bears on the finger 8 by means of the rod 12. In its blocking position, the rod 12 opposes the rotation of the finger 8.
  • the blocker 9 preferably has a rod 12 mounted at rotation.
  • the blocker 9 rests on the internal face of the first flange 6, that is to say the face which is opposite the sheaves 2.
  • the blocker 9 allows the movement of the finger 8 towards the first flange 6, for example by not pressing simultaneously on the first flange 6 and on the finger 8.
  • the actuation zone 10 When moving from the locked position to the unlocked position, the actuation zone 10 rotates away from the sheaves 2 and the second flange 7. The displacement of the actuation zone 10 causes the displacement of the rod 12 which advantageously approaches the sheaves 2.
  • the actuation zone 10 of the blocker 9 is visible on the front face of the pulley, that is to say the face which has the slot.
  • the actuation zone 10 protrudes from the front face of the pulley 1 which facilitates its actuation by the user who directly sees the zone to be used to open the pulley 1.
  • This configuration makes it possible to have a blocker 9 which does not no protrusion on the outer rear face of the pulley which increases safety in use.
  • the blocker 9 is in one piece and is partly located in the housing intended to receive the cable 5.
  • the rod 12 is mounted in one piece with the actuation zone 10.
  • the rod 12 is mounted to rotate around the rotation shaft 11.
  • the rotation shaft 11 separates the rod 12 and the actuation zone 10.
  • the bearing of the rod 12 on the first flange 6 causes the locking of the finger 8 because the rotation shaft of the blocker 9 is attached to finger 8.
  • the actuation zone 10 is disposed at one end of the blocker 9 and the opposite end is formed by the rod 12 which bears on the first flange 6 when the blocker 9 is in the blocking position.
  • the rod 12 is rotatably mounted with an axis of rotation which is different from that of the actuation zone 10.
  • the rotation of the rod 12 is caused by the rotation of the actuation zone.
  • the shaft of rotation of the rod 12 can be mounted on the first flange 6. This embodiment is less advantageous than the previous one because it requires more elements which increases the bulk.
  • the rod 12 is in the form of two elements which are separated by the finger 8 along the axis of rotation of the blocker 9.
  • the two projecting elements ensure better transmission of forces and can move to come. adjacent to the finger in a direction parallel to the axis of rotation of the finger as illustrated in figure 3 .
  • the actuation zone 10 is advantageously a concave actuation zone and not a convex actuation zone.
  • the actuation zone 10 defines a recess which encourages the user to place a finger in the recess to move the blocker 9 then the finger 8.
  • the concave actuation zone 10 has a stopper wall 13 and a bearing wall 14 which represent two distinct surfaces meeting to define the concavity.
  • the stop wall 13 covers the finger 8, extending mainly from the rotation shaft 11 towards the second flange 7, that is to say towards the two sheaves 2.
  • the stop wall 13 extends substantially along the longitudinal axis of finger 8 to avoid direct contact between the user's finger and finger 8 when the blocker 9 is in the locking position.
  • the area of the bearing wall 14 is arranged projecting from the finger 8, extending orthogonally to the axis of rotation of the blocker 9 and orthogonally to the longitudinal axis of the finger 8.
  • the bearing wall 14 extends. from the rotation shaft 11 in a direction parallel to the axis of rotation of the sheaves 2.
  • the support wall is disposed projecting from the front face of the pulley which facilitates the actuation of the blocker.
  • the bearing zone 14 is mounted fixed relative to the stop wall 13.
  • the stop wall 13 covers at least 50% of the distance which separates the axis of rotation of the blocker 9 and the second flange 7 in the closed position, preferably at least 75%.
  • the stop wall is optional in actuating the blocker from the blocked position.
  • the actuation zone 10 moves away from the two sheaves 2 and away from the second flange 7.
  • the stop wall 13 pivots in moving away from the second flange 7. In this way, the user's finger which moves the actuation zone 10 is naturally away from the second flange 7 which avoids obstructing the slot and will facilitate insertion or extraction of the cable 5.
  • the stop wall 13 and the second flange 7 define a slot opening into the housing intended to receive a cable 5.
  • the wall of stop 13 separates the bearing wall 14 and the second flange 7.
  • the slot is intended to allow the passage of the cable 5.
  • the stop wall 13 is separated from the second flange 7 by a distance less than the separation distance between the first flange 6 and the second flange 7 in the housing.
  • the slot allows the introduction of the cable while allowing to form a compact blocker.
  • the inventors have observed that with a pulley provided with a pivoting finger 8, the user pushes on the finger 8 in order to bring it closer to the first flange 6 and to define the slot.
  • the user's finger naturally slides towards the second flange, because of the pivoting, so that the user's finger moves towards the inside of the slot which obstructs the slit.
  • the height of the slot must be increased and / or the separation distance between the actuation area and the slot must be increased.
  • the Zippey TM pulley presented above uses an actuation zone placed on the rear face of the pulley, which is less intuitive in its operation.
  • the blocker 9 remains in the unlocked position and the force applied by the user on the actuation zone 10 brings the finger 8 closer to the first flange 6 to define the slot.
  • the slot is defined at one end by the distance between the second flange 7 and the stop wall 13 and at the other end by the distance between the second flange 7 and the finger 8. The finger of the the user is protected from any contact with the cable 5 by the stop wall 13.
  • the blocker 9 defines an end stop when moving from the first position to the second position. Once the end-of-travel stop is reached, pressing on the actuation zone 10 results in a force on the finger 8 which moves the finger 8 from the closed position to the open position.
  • the actuation zone 10 of the blocker 9 also forms the actuation zone of the finger 8 so that the user's finger is able to move the blocker 9 from the blocking position to the unlocking position. and that the force applied in the unlocking position moves the finger 8.
  • the actuation zone 10 is separated from the first flange 6 by the finger 8.
  • the rotation shaft 11 of the blocker 9 is mounted between the rotation shaft of the finger 8 and the end of the finger 8 which comes into contact with the second flange 7 to close the slot.
  • the displacement of the actuation zone 10 from the locked position to the unlocked position corresponds to a rotation of an angle greater than or equal to 90 ° and preferably greater than 95 °.
  • a rotation makes it possible to better distinguish the movement causing the release of the blocker 9 and the movement causing the opening of the slot.
  • a vertical downward movement applied to the pulley shown in figure 1 results in the release of blocker 9 without opening finger 8.
  • the same movement applied to the Zippey TM pulley causes the pulley to open.
  • the vertical downward movement is then associated with a horizontal movement towards the first flange 6 to open the slot.
  • Safety is improved by means of two consecutive efforts having two different orientations to obtain the opening of the pulley.
  • the movable finger 8 has an obstacle 15 which is arranged between the first flange 6 and the second flange 7.
  • the obstacle 15 is movable between the two flanges 6 and 7.
  • the first flange 6 defines a hole crossing and / or a recess 16 which cooperate with the obstacle 15.
  • the recess 16 does not extend over the entire width of the first flange 6. The width is measured along the longitudinal axis of the cable 5 or the axis perpendicular to the two axes of rotation of the sheaves 2 and passing through the two axes of rotation.
  • the obstacle 15 partially sinks into the through hole and / or into the recess 16.
  • the obstacle 15 is configured to at least partially obstruct the space between the two flanges 6 and 7 and prevent the cable 5 is located between finger 8 and the first flange 6 which prevents the extraction of cable 5.
  • the obstacle 15 cooperates with the two flanges 6 and 7 so that the obstruction length of the obstacle 15 in the housing changes depending on whether the finger 8 is in the closed position or in the open position.
  • the length is measured in the direction which passes through the first flange 6 and the second flange 7.
  • the obstruction length is greater in the closed position than in the open position. In the closed position, the length of the obstruction opposes the passage of the cable between the first flange 6 and the obstacle 15.
  • the distance between the obstacle 15 and the first flange 6 is less than the diameter of the cable 5.
  • the distance between the obstacle 15 and the second flange 7 is greater than the diameter of the cable 5.
  • the obstacle 15 extends a first distance from the first flange 6 to the second flange 7.
  • the first distance is less than or equal to the minimum distance which separates the two flanges 6 and 7 in a plane parallel to the plane which contains the two axes of rotation of the sheaves 2 and which passes through the obstacle 15.
  • the difference between the first distance and the minimum distance which separates the two flanges 6 and 7 is less than the diameter of the cable 5, for example 12mm.
  • the cable 5 has a tension or a rigidity which prevents it from deforming and passing between the obstacle 15 and the first flange 6. The cable 5 remains between the obstacle 15 and the sheaves 2.
  • the obstacle 15 sinks into the recess 16 and / or the through hole so that the distance between the obstacle 15 and the second flange 7 is greater than the diameter of the cable 5. This allows the insertion or extraction of the cable 5.
  • the obstacle 15 makes it possible to limit the movement of the cable 5 and prevents the cable 5 from being trapped between the finger 8 and the first flange 6. With this jamming, it is not possible to extract the cable or even to open. finger 8.
  • the double pulley has an attachment point 17 which is intended to mechanically connect the user with the pulley.
  • the attachment point 17 allows the introduction of a lanyard, a strap, a rope or a carabiner.
  • the finger 8 comprises a hook 18 which cooperates with the second flange 7.
  • the hook 18 cooperates with a through hole of the second flange 7. The through hole passes through the inner wall and the outer wall of the second flange. 7.
  • the hook 18 bears against the side wall of the second flange 7 when the force applied to the fixing point 17 reaches a threshold value.
  • the threshold force advantageously corresponds to a user suspended from the attachment point 17.
  • the resting of the hook 18 against the side wall of the second flange 7 prevents the opening of the slot.
  • the pulley 1 has an attachment point 17 which is located under the housing.
  • the attachment point 17 is formed by a rod 19 which extends from the first flange 6.
  • the rod 19 extends to a second additional flange 20 which is fixed to the. first flange 6 by other means.
  • the connections between the rod 19, the first flange 6 and the second additional flange 20 allow part of the forces applied on the rod 19 to be transmitted to the first flange 6.
  • the first flange 6 is connected to the second flange 7 by means of a support 21.
  • the support 21 may have an upper face which defines one or two notches 22 which are arranged at the ends. of the support bracket along the longitudinal axis of the cable 5.
  • Each notch 22 can be configured to retain a carabiner.
  • the notch 22 is configured to define a depression which is located between the rotation shaft 3 and the end of the support.
  • the notch 22 may be formed by an element 23 which defines a horn.
  • the rotation shaft of the movable finger 8 is mounted on a spacer 24 which is configured to offset the axis of rotation with respect to the first flange 6.
  • the spacer 24 is mounted between the first flange 6 and the second additional flange 20.
  • the blocker 9 comes to rest on the spacer 24 which itself is in support on the first flange 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Pulleys (AREA)
  • Transmission Devices (AREA)
  • Emergency Lowering Means (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
EP20181528.9A 2019-07-08 2020-06-23 Riemenscheibe mit gesicherter öffnung Active EP3763425B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1907640A FR3098409B1 (fr) 2019-07-08 2019-07-08 Poulie a ouverture securisee

Publications (2)

Publication Number Publication Date
EP3763425A1 true EP3763425A1 (de) 2021-01-13
EP3763425B1 EP3763425B1 (de) 2022-03-23

Family

ID=68138506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20181528.9A Active EP3763425B1 (de) 2019-07-08 2020-06-23 Riemenscheibe mit gesicherter öffnung

Country Status (6)

Country Link
US (1) US11560294B2 (de)
EP (1) EP3763425B1 (de)
CN (1) CN214138504U (de)
BR (1) BR102020008632A2 (de)
FR (1) FR3098409B1 (de)
TW (1) TW202116658A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD996193S1 (en) * 2021-05-19 2023-08-22 Zedel Pulley

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2042401A1 (de) * 2007-09-25 2009-04-01 Camp S.p.A. Seilrollenträger
CH704409A1 (fr) * 2011-01-31 2012-07-31 Kanopeo Gmbh Poulie pour système de ligne d'assurance continue.
GB2522553A (en) * 2014-01-24 2015-07-29 Internat Safety Components Ltd Improvements in and relating to zipwire trolleys

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI381795B (zh) * 2008-10-08 2013-01-01 Compal Electronics Inc 攜帶式電子裝置的閂鎖結構
CN110799762B (zh) * 2017-02-01 2023-02-17 特鲁布鲁有限公司 双锁扣钩环

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2042401A1 (de) * 2007-09-25 2009-04-01 Camp S.p.A. Seilrollenträger
CH704409A1 (fr) * 2011-01-31 2012-07-31 Kanopeo Gmbh Poulie pour système de ligne d'assurance continue.
GB2522553A (en) * 2014-01-24 2015-07-29 Internat Safety Components Ltd Improvements in and relating to zipwire trolleys

Also Published As

Publication number Publication date
US20210009389A1 (en) 2021-01-14
CN214138504U (zh) 2021-09-07
FR3098409A1 (fr) 2021-01-15
EP3763425B1 (de) 2022-03-23
RU2020122263A (ru) 2022-01-10
FR3098409B1 (fr) 2021-07-09
BR102020008632A2 (pt) 2021-08-17
TW202116658A (zh) 2021-05-01
US11560294B2 (en) 2023-01-24

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