EP3063086A1 - Treuil pour évoluer le long d'un brin de levage - Google Patents
Treuil pour évoluer le long d'un brin de levageInfo
- Publication number
- EP3063086A1 EP3063086A1 EP14790072.4A EP14790072A EP3063086A1 EP 3063086 A1 EP3063086 A1 EP 3063086A1 EP 14790072 A EP14790072 A EP 14790072A EP 3063086 A1 EP3063086 A1 EP 3063086A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pulley
- frame
- strand
- winch according
- winch
- 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
Links
- 238000004804 winding Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 2
- 241000254032 Acrididae Species 0.000 description 1
- 230000002426 anti-panic effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B29/00—Apparatus for mountaineering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7489—Capstans having a particular use, e.g. rope ascenders
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B29/00—Apparatus for mountaineering
- A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons
Definitions
- the present invention relates to a winch for moving along a lifting strand such as a rope or cable, and in particular a winch to which a user can anchor to go up and down along a rope.
- the invention relates to the field of winches and in particular winches with traction sheave.
- Winches with traction sheaves should not be confused with drum winches or the like.
- the winches pulley adhesion have the characteristic of being able to be used with cables of unlimited length because of the principle of retention by adhesion of the cable inside a single groove of the traction block in which the cable is wound on less than one turn.
- winches have been developed for professional, safety and sporting purposes: access to building facades, windmill or boat mats, work areas in elevator shafts, silo, rescue in assembly and climbing, etc. They have compared to other winches the following advantages:
- the winch can move along the cable and therefore accompany the load, whether an object or a user.
- EP 1 030 726 discloses, for example, an adhesion winch comprising a motor whose driving shaft is coupled to a single V-groove pulley mounted on a frame.
- the winch comprises a locking member connected to the frame, which allows the winch to climb on the rope, and locks as soon as the upward force stops.
- a guide ring is positioned above the pulley, close to it. The rope is put in place by the user so as to pass through the guide ring, wrap around the pulley and pass through the same guide ring again, the rope is thus engaged 180 ° in the groove of the pulley.
- the design of the pulley portion of this winch, with a contact angle of 180 °, implies the need for a locking member.
- Another disadvantage is related to forced passage of the strand and soft strand through the guide ring, which implies that the rope enters and exits through the top of the winch.
- pulling up can be problematic and cause jams.
- Other devices employing throat pulleys for traction can be cited.
- GB 2057871 describes, for example, a rescue apparatus for rappelling persons comprising a frame, to be hooked to the person to descend, and a rope pulley, the latter being guided wound on an angle greater than 180 degrees. The braking of the pulley is done by a mechanism that takes into account the weight of the person.
- GB 2057871 describes a winch of the winch type of boat, for hauling sails.
- EP0876987 discloses an emergency lift system for installation outside a building.
- WO2010049597 discloses an inserter-chute device, self-locking, anti-panic and lockable in position.
- the object of the present invention is to provide an improved winch not having the disadvantages mentioned above.
- a hoist-type traction hoist winch comprising: a frame having, in use, an upper region facing a portion of the tensioning strand under tension and a lower region of the slack of lifting strand; an adhesion pulley mounted on the frame and comprising at its periphery a groove for traction (transmission of force / movement) of the lifting strand by adhesion; guiding means adapted to guide the lifted strand from the upper region of the frame to its lower region, the guiding means comprising on the lower region of the frame side a guide pulley close to the traction sheave and guiding the lifting strand at the entry of the traction sheave; a clamping pulley at the outlet of the traction sheave, close to the guide pulley, exerting a pressure on the lifting strand in the direction of the traction sheave.
- the winch according to the invention allows the ascent and descent along a lifting strand of unlimited length (the term "lifting strand” is used here to designate a rope, in particular a synthetic rope, a rope, etc.). . It will be appreciated that the design of the winch has been particularly thought for the ropes, which results in an output of the soft strand down, and eliminates the tendency to jam unlike the winches in which the soft strand comes out from above.
- the design of the winch according to the invention which employs a grip in combination with a clamping pulley, allows a control of the forces so as to ensure the locking of the rope in the traction sheave when there is no drive, eliminating the need for a specific locking device.
- the proximity of the guide and clamping pulleys also allows a large winding angle of the lifting strand on the pulley, which increases the lifting force.
- the guide pulley and the clamping pulley are positioned so that the lifting strand is engaged in the groove of the traction sheave at an angle of at least 200 °, preferably at least 280 ° and more preferably between 300 and 340 °.
- the traction sheave is preferably mounted on a shaft coupled to a manual or motor drive mechanism, usually via a gear box.
- the motor may be of the electric or thermal type.
- the motor control allows the traction pulley to rotate in both directions of rotation, allowing the user to control the raising and lowering of the winch on the lifting line.
- the design of the winch also allows great compactness, and is therefore suitable for use as a stand-alone portable unit, whose size will still function of the drive mechanism.
- the winch advantageously comprises an anchor point, which, depending on the applications, will be used for fixing a flexible link or a rigid structure, able to support a user or a load.
- the clamping pulley is preferably constrained in the direction of the traction sheave by resilient means, particularly a compression spring.
- the guide and clamping pulleys are retractable, which allows to wind the rope around the traction block on the running part of the rope (and not only end of rope).
- the clamping pulley is carried by an arm pivotally mounted on the frame about an axis and cooperating with a toggle-type mechanism for locking the clamping pulley in the use position against the lifting strand.
- the drive pulley is preferably of the V-groove type.
- the adhesion can be improved by a raised pattern on the sides of the groove.
- the rope and the traction sheave are chosen in adequacy.
- a pulley of at least 150 mm of winding diameter is advantageously chosen, and a winding coefficient of the order of 14 to 18 is aimed at.
- Fig.1 a front view of an embodiment of the present winch
- Fig.2 a rear perspective view of the winch of Fig.1;
- Fig.3 a perspective view of the traction sheave
- Fig.4 a detailed view of the groove of the pulley of Fig.3;
- Fig.5 a perspective view of the rope guide.
- FIG. 1 shows a front view of an alternative embodiment of the present winch 10. It comprises a frame 12 on which is mounted a traction pulley 14 (also known as a traction sheave) comprising at its periphery a groove 16 ( single) for driving a lifting strand by adhesion, in particular a synthetic rope which is referenced 20 and materialized by the dashed lines.
- a traction pulley 14 also known as a traction sheave
- the traction pulley 14 is fixed to a shaft 19 of which it is integral in rotation.
- the shaft 19 is generally part of a driving means coupled to the pulley 14 via it, as will be seen below.
- the winch 10 is shown in its service / use position, in which it can be seen that the stretched strand 20a of the rope 20 arrives from the top of the winch 10 (the opposite end of the stretched strand being secured to a support), and that the soft strand 20b is discharged downwards.
- the stretched strand 20a arrives on the side of the upper region of the frame 12, while the soft strand 20b leaves on the side of the lower region of the frame 12.
- Guiding means is provided for guiding the rope 20 under tension from the upper region of the frame towards its lower region and comprises a guide pulley 22 cooperating preferably with at least one deflection pulley 24, here two.
- the deflection pulleys 24 (crazy in rotation) are positioned in the upper part of the frame 12, above the traction pulley 14, to receive the stretched strand 20a and deflect laterally to the guide pulley 22 which is positioned in the lower part, under and near the pulley d 14.
- the strand rope 20a under tension coming from the top passes through the deflection pulleys 24 to arrive on the guide pulley 22, which makes the stretched strand 20a upward again and ensures its transfer to the pulley. 14.
- the rope 20 then forms a loop around the pulley 14 and leaves it behind a clamping pulley 26 which exerts pressure on the rope 20 towards the bottom of the groove 16.
- the rope 20 falls by gravity downwards; it is the soft strand 20b.
- a guide 28 is placed directly behind the clamping pulley 26 to guide the rope 20 downwards when it leaves the groove 16.
- the guide 28 is a square-section channel, partly open laterally, one end is close to the traction pulley 14.
- the guide 28 preferably comprises a curved finger 30 which extends from its upper end partially into the groove 16 of the traction pulley to facilitate the extraction of the rope 20.
- the guide 28 allows the extraction of the soft strand 20b out of the winch. It is not useful to ballast the soft strand with a weight to extract it from the traction block 14.
- traction hoist 14 traction force depends on the winding angle of the rope in the groove of the traction sheave and the coefficient of adhesion of the rope in the groove, as well as the force exerted by the clamping pulley 26 at the outlet of the traction sheave.
- the winch is calculated to prevent slippage of the rope when raising or lowering a load greater than or equal to 1, 5 times the maximum load.
- the walls 31 of these are preferably in V.
- the adhesion is further increased by protuberances, here radial ribs 33 positioned offset on the opposite sides of the groove 16.
- the ribs are regularly distributed on each of the flanks, and the ribs on one side face the middle of the inter-rib space on the other side.
- Adherence is further controlled by proper groove / rope sizing, the bottom of the groove having a diameter slightly smaller than that of the rope, e.g. 0.7 to 0.9 times the diameter of the rope, preferably between 0.7 and 0.8.
- the opening angle of the groove (denoted alpha in Fig. 4) can be chosen between 15 and 35 °, preferably between 20 and 30 °. It will also be possible to adjust the thickness of the protuberances.
- ⁇ Another parameter acting on the traction force is the winding angle, here denoted ⁇ , on which the rope is engaged in the groove 16 of the drive pulley 14.
- the angle ⁇ is greater than 200 °, preferably greater than 280 ° and in particular between 300 and 340 °.
- the clamping and guiding pulleys are positioned close to each other, separated by the guide 28, which allows a large winding angle ⁇ of the order of 320 °.
- the different parameters influencing the adhesion will be dimensioned with care, since they are also factors of wear of the rope.
- a winding coefficient (ratio winding diameter to rope diameter) of the order of 14 to 18, with a pulley having a winding diameter of at least 150 mm, will be aimed at.
- the present winch 10 is compact, the different pulleys being mounted on the frame in the same plane.
- the winch is preferably associated with drive means (not shown) which comprises a motor coupled to a gearbox output.
- the shaft 19 which drives the pulley 14 can be part of the gearbox or be coupled thereto.
- the motor / reducer assembly is fixed firmly to the frame by its rear face 12a (FIG.
- the engine will include a brake of service, that is to say a mechanical brake normally closed at rest.
- the reference sign 76 indicates a tab that forms an anchor point or support for an anchor point for receiving a carabiner or other link by which the user can attach a harness, a lanyard or any load.
- the tab 76 may form an anchor point for a rigid frame comprising a seat, which allows the user to be seated rather than suspended from the winch.
- the skilled person may further develop any other solution to form a structure suspended from, or supported by, the present winch.
- the two deflection pulleys 24 have a fixed axis of rotation 32 mounted on the frame, and rotate about their respective axis 32 by means of a bearing 34, for example ball bearings.
- the axis 36 of the guide pulley 22 (free to rotate) is also fixed in use, but this pulley 22 is mounted retractable by means of an arm 38.
- the arm 38 thus carries at one end the guide pulley 22 and is fixed pivotally at its other end to the frame 12.
- the arm 38 consists of a pair of rods 40 fixed by an axis 42 passing through the frame 12, and receiving between them, at the opposite end, the guide pulley 22 rotatably supported by an axis 44 and a bearing 46.
- the reference sign 48 indicates a guide piece which extends from the pivot 42 of the arm 38 partially along the pulley 14.
- the pressure exerted by the clamping pulley 26 on the rope 20 is preferably obtained by means of a resilient spring system 50, which makes it possible to avoid adapting the position of the pulley 26 according to the diameter and / or the wear condition of the rope 20.
- the elastic spring system 50 is inspired by the knee or grasshopper type mechanisms.
- the sheave 26 is mounted idle in rotation at the end of a clamping arm 56 which pivots relative to the frame 12 (at the lower end of a guide piece 57 fixed to the frame and which extends along the traction sheave 14, on the opposite side to the guide piece 48).
- the arm 56 comprises a pair of rods 58 fixed by an axis 60 passing through the frame 12, and receiving between them the guide pulley supported by an axis 52 and a bearing 54.
- the reference sign 62 indicates a rod forming an operating handle , pivotally mounted on the frame 12 about an axis 64 in the upper part of the frame.
- the arm 56 and the handle 62 are connected by a pair of rods 66, extending on either side of the frame 12.
- the rod 66 is housed in the axis of rotation 52 of the clamping pulley 26, in which it is axially locked.
- the rod 66 passes through a pivoting axis 68, in which it can slide axially.
- a compression spring 70 is disposed on the end of the rods 66, beyond the pivot axis 68.
- the spring 70 is retained by an axial stop 72, whose axial position is preferably adjustable.
- This elastic system 50 thus makes it possible to retract the clamping pulley 26 for the positioning of the rope 20, the retracted position being shown in phantom.
- the system 50 locks by pivoting the handle 62 from the retracted position toward the arrow 74.
- the pivot axis 68 exceeds the alignment point of the axes 52 and 64, the handle 62 is blocked.
- the locking position of the handle 62, and the pressing force exerted by the clamping pulley 26 on the rope 20, can be adjusted by adjusting the spring force by means of axial stop 72.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Pulleys (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU92298A LU92298B1 (fr) | 2013-10-28 | 2013-10-28 | Treuil à poulie d'adhérence autonome |
PCT/EP2014/073034 WO2015063043A1 (fr) | 2013-10-28 | 2014-10-27 | Treuil pour evoluer le long d'un brin de levage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3063086A1 true EP3063086A1 (fr) | 2016-09-07 |
EP3063086B1 EP3063086B1 (fr) | 2017-11-15 |
Family
ID=49584766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14790072.4A Active EP3063086B1 (fr) | 2013-10-28 | 2014-10-27 | Treuil pour évoluer le long d'un brin de levage. |
Country Status (6)
Country | Link |
---|---|
US (1) | US9790064B2 (fr) |
EP (1) | EP3063086B1 (fr) |
DK (1) | DK3063086T3 (fr) |
ES (1) | ES2659379T3 (fr) |
LU (1) | LU92298B1 (fr) |
WO (1) | WO2015063043A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA033461B1 (ru) | 2014-07-01 | 2019-10-31 | Saint Gobain | Нагреваемое многослойное боковое стекло |
US9604087B2 (en) * | 2015-06-30 | 2017-03-28 | The United States Of America As Represented By The Secretary Of The Navy | Rope climbing systems and methods of use |
US10654045B2 (en) * | 2017-03-15 | 2020-05-19 | Robert Stineman | Winching chipper |
US10787347B1 (en) * | 2019-03-04 | 2020-09-29 | Randy Gurule | Self-locking pulley |
SE543179C2 (en) * | 2019-04-09 | 2020-10-20 | Actsafe Systems AB | A portable power-driven system |
WO2022111839A1 (fr) * | 2020-11-30 | 2022-06-02 | Freundorfer Isabell Christine | Dispositif d'acheminement de corde |
EP4116252A1 (fr) * | 2021-07-08 | 2023-01-11 | Skylotec GmbH | Dispositif à coulisseau de sécurité pour un système motorisé portatif |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH529060A (fr) * | 1971-03-26 | 1972-10-15 | Virdis Joseph | Treuil d'échafaudage |
DE2307370C3 (de) * | 1973-02-15 | 1979-03-29 | Carl 5291 Kupferberg Kaeufer | Seilwinde, insbesondere für Hängegerüste |
US3944185A (en) * | 1974-06-28 | 1976-03-16 | Mayco Equipment Co., Inc. | Hoist apparatus |
US4205871A (en) * | 1977-08-17 | 1980-06-03 | Nihon Biso Kabushiki Kaisha | Rope traction apparatus |
US4139178A (en) * | 1977-09-22 | 1979-02-13 | Power Climber Inc. | Hoist apparatus |
FR2457834A1 (fr) * | 1979-06-01 | 1980-12-26 | Tractel Sa | Dispositif de pression d'un cable contre la gorge d'une poulie |
SE430214B (sv) * | 1979-07-31 | 1983-10-31 | Hans Bloder | Reddningsredskap for nedfirning av personer |
AT384741B (de) * | 1979-07-31 | 1987-12-28 | Bloder Hans | Rettungsgeraet zum abseilen von personen |
SE417947B (sv) * | 1979-08-10 | 1981-04-27 | Carl Olov Harry Wallin | Kraftreducerande vinsch, serskild utnyttjad vid skotning av segel |
US4555091A (en) * | 1983-06-23 | 1985-11-26 | Power Climber, Inc. | Efficient lightweight hoist with multiple-cable-size traction and safety systems |
US4611787A (en) * | 1983-06-23 | 1986-09-16 | Power Climber, Incorporated | Efficient lightweight hoist with multiple-cable-size traction and safety systems |
DE3509920C2 (de) * | 1985-03-19 | 1993-11-25 | Greifzug Hebezeugbau Gmbh | Seilzugvorrichtung |
US4620615A (en) * | 1985-11-14 | 1986-11-04 | Westinghouse Electric Corp. | Elevator system |
FR2647427B1 (fr) * | 1989-05-29 | 1991-09-06 | Tractel Sa | Appareil d'entrainement d'un lien porteur d'une charge, avec dispositif coordonne de deflection de la charge et guidage du lien |
JPH0818795B2 (ja) * | 1993-07-16 | 1996-02-28 | 日本ビソー株式会社 | ロープ牽引装置 |
KR100251014B1 (ko) * | 1997-05-06 | 2000-04-15 | 김경주 | 승강기 |
SE521204C2 (sv) * | 1997-11-06 | 2003-10-07 | Act Safe Systems Ab | Klätteranordning |
GB2398054B (en) * | 2003-01-24 | 2005-08-03 | Ropepower Ltd | Powered rope climbing apparatus |
WO2010049597A1 (fr) * | 2008-10-28 | 2010-05-06 | Claude Boulliat | Dispositif assureur-descendeur, avec manette de pilotage a reglage ergonomique, pour tous diametres de cordes en simple ou en double, auto bloquant, anti-panique et verrouillable en position |
KR101334778B1 (ko) * | 2011-05-17 | 2013-11-29 | 김미경 | 재난용 인명 대피 및 구조장비 |
-
2013
- 2013-10-28 LU LU92298A patent/LU92298B1/fr active
-
2014
- 2014-10-27 US US15/030,984 patent/US9790064B2/en active Active
- 2014-10-27 EP EP14790072.4A patent/EP3063086B1/fr active Active
- 2014-10-27 WO PCT/EP2014/073034 patent/WO2015063043A1/fr active Application Filing
- 2014-10-27 DK DK14790072.4T patent/DK3063086T3/da active
- 2014-10-27 ES ES14790072.4T patent/ES2659379T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
US9790064B2 (en) | 2017-10-17 |
EP3063086B1 (fr) | 2017-11-15 |
DK3063086T3 (da) | 2018-01-29 |
WO2015063043A1 (fr) | 2015-05-07 |
US20160297651A1 (en) | 2016-10-13 |
LU92298B1 (fr) | 2015-04-29 |
ES2659379T3 (es) | 2018-03-15 |
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