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EP1611924A1 - Energy absorbing device for a lifeline - Google Patents

Energy absorbing device for a lifeline Download PDF

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Publication number
EP1611924A1
EP1611924A1 EP05291335A EP05291335A EP1611924A1 EP 1611924 A1 EP1611924 A1 EP 1611924A1 EP 05291335 A EP05291335 A EP 05291335A EP 05291335 A EP05291335 A EP 05291335A EP 1611924 A1 EP1611924 A1 EP 1611924A1
Authority
EP
European Patent Office
Prior art keywords
cable
lifeline
energy absorbing
absorbing device
cutout
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.)
Withdrawn
Application number
EP05291335A
Other languages
German (de)
French (fr)
Inventor
Nicolas Faye
Benoît Fourgeot
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.)
Honeywell Fall Protection France SAS
Original Assignee
Bacou Dalloz Vierzon 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 Bacou Dalloz Vierzon SAS filed Critical Bacou Dalloz Vierzon SAS
Publication of EP1611924A1 publication Critical patent/EP1611924A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/04—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion incorporating energy absorbing means

Definitions

  • the present invention relates to a device intended to be inserted on a horizontal cable stretched along a building and constituting a lifeline and along which slides a slide connected by a link to a harness worn by a person working with high places.
  • the invention relates to devices which, inserted on the lifeline when the person accidentally falls, allow said lifeline stressed, to absorb energy and thus limit the efforts at the points of interest. anchoring said lifeline.
  • One of the aims of the present invention is to provide a very simple device, inexpensive, effective and offers great security.
  • the device is intended to be inserted on a cable constituting a lifeline and disposed horizontally along a wall and having a hole for fixing one end of the cable, at the other end, a hole for fixing an end of said cable, characterized in that it consists of two superimposed plates and slidable relative to each other, each plate having a cutout forming a series of strips s' extending transversely to the longitudinal axis of said wafers and a finger passing through the cutout of the other wafer in the vicinity of the holes for fixing the ends of the cable.
  • the fingers are constituted by rivets on which are mounted washers bearing against the face of the pads opposite to that turned one facing the other.
  • the bars have a V shape whose tip is turned towards the end of the cutout provided with the finger.
  • the two plates are identical and turned head to tail relative to each other.
  • FIG 1 there is shown a lifeline 1 disposed horizontally along a building; on it is movable a sliding member 2 connected by a cable 3 to a harness 4 intended to be worn by a worker working at high places.
  • the lifeline is fixed at its ends to anchors 7.
  • the device consists of two elongated plates 6 and 8 cut, for example in a metal plate.
  • the wafer 6 has an elongated shape with, at one end, a circular hole 9 intended to be traversed by a hooking member of the cable 3.
  • the plate 6 is pierced with a hole 10 in which is mounted a finger constituted by a rivet 11 on which is mounted a large washer 12.
  • the wafer 6 has a longitudinal cutout 14 forming a series of parallel strips 15 transverse to the longitudinal axis of said wafer 6.
  • the bars 15 have a V shape whose tip is turned towards the rivet 11.
  • the second plate 8 is identical to the first plate 6 and is arranged head to tail with respect to said first plate 6.
  • the second plate 8 comprises, at one end, a hole 17 for fixing the cable 3 and, at the other end, a hole 18 in which is fixed a finger formed by a rivet 19 on which is mounted a washer 20.
  • the wafer 8 has a cut-out 21 forming a series of strips 22 transverse to the longitudinal axis of the wafer 8.
  • the wales 22 are parallel to each other and in the shape of a V whose point is turned towards the rivet 19.
  • the rivet 11 passes through the cutout 21 and is housed between the end 21a of said cutout and the bar 22 adjacent to this end, the washer 12 bearing on the free face of the wafer 8.
  • the rivet 19 passes through the cutout 14 and is disposed between the end 14a of the cutout 14 and the bar adjacent to this end, the washer 20 bearing against the free face of the wafer 8 opposite to that turned towards the wafer 6.
  • the device according to the invention is particularly simple, inexpensive to manufacture and offers great security.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Emergency Lowering Means (AREA)

Abstract

The device has elongated link plates (6, 8) which are superposed and sliding with respect to each other. The link plates comprise respective cut outs (14, 21) with a set of lugs (15, 22) extending transversal to longitudinal axes of the link plates, and respective fingers (11, 19) traversing the cutout of the other link plate near holes (9, 17) for the fixation of ends of a cable (1).

Description

La présente invention se rapporte à un dispositif destiné à être inséré sur un câble horizontal tendu le long d'un bâtiment et constituant une ligne de vie et le long duquel glisse un coulisseau relié par un lien à un harnais porté par une personne travaillant à des endroits élevés.The present invention relates to a device intended to be inserted on a horizontal cable stretched along a building and constituting a lifeline and along which slides a slide connected by a link to a harness worn by a person working with high places.

L'invention se rapporte à des dispositifs qui, insérés sur la ligne de vie lorsque la personne vient à chuter accidentellement, permettent à ladite ligne de vie sollicitée en tension, d'absorber l'énergie et ainsi de limiter les efforts aux points d'ancrage de ladite ligne de vie.The invention relates to devices which, inserted on the lifeline when the person accidentally falls, allow said lifeline stressed, to absorb energy and thus limit the efforts at the points of interest. anchoring said lifeline.

L'un des buts de la présente invention est de réaliser un dispositif très simple, peu onéreux, efficace et qui offre une grande sécurité.One of the aims of the present invention is to provide a very simple device, inexpensive, effective and offers great security.

Le dispositif, selon l'invention, est destiné à être inséré sur un câble constituant une ligne de vie et disposé horizontalement le long d'une paroi et comportant un trou pour la fixation d'une extrémité du câble, à l'autre extrémité, un trou pour la fixation d'une extrémité dudit câble, caractérisé en ce qu'il est constitué de deux plaquettes superposées et susceptibles de glisser l'une par rapport à l'autre, chaque plaquette comportant une découpe ménageant une série de barrettes s'étendant transversalement à l'axe longitudinal desdites plaquettes et un doigt traversant la découpe de l'autre plaquette au voisinage des trous pour la fixation des extrémités du câble.The device, according to the invention, is intended to be inserted on a cable constituting a lifeline and disposed horizontally along a wall and having a hole for fixing one end of the cable, at the other end, a hole for fixing an end of said cable, characterized in that it consists of two superimposed plates and slidable relative to each other, each plate having a cutout forming a series of strips s' extending transversely to the longitudinal axis of said wafers and a finger passing through the cutout of the other wafer in the vicinity of the holes for fixing the ends of the cable.

Grâce à cette disposition, en cas de chute, les doigts briseront les barrettes engendrant un amortissement de la tension de la ligne de vie.With this arrangement, in case of a fall, the fingers will break the bars causing a damping of the voltage of the lifeline.

Suivant un détail constructif, les doigts sont constitués par des rivets sur lesquels sont montées des rondelles portant contre la face des plaquettes opposée à celle tournée l'une en regard de l'autre.According to a constructive detail, the fingers are constituted by rivets on which are mounted washers bearing against the face of the pads opposite to that turned one facing the other.

De préférence, les barrettes affectent une forme en V dont la pointe est tournée du côté de l'extrémité de la découpe pourvue du doigt.Preferably, the bars have a V shape whose tip is turned towards the end of the cutout provided with the finger.

Enfin, les deux plaquettes sont identiques et tournées tête-bêche l'une par rapport à l'autre.Finally, the two plates are identical and turned head to tail relative to each other.

L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation particulier donné à titre d'exemple seulement et représenté aux dessins annexés.

  • Figure 1 est une vue en perspective montrant schématiquement un ensemble de sécurité.
  • Figure 2 et figure 3 montrent, à plus grande échelle, le dispositif selon l'invention.
  • Figure 4 montre en perspective le dispositif lorsqu'il a été utilisé.
The invention will now be described in more detail with reference to a particular embodiment given by way of example only and shown in the accompanying drawings.
  • Figure 1 is a perspective view schematically showing a safety assembly.
  • Figure 2 and Figure 3 show, on a larger scale, the device according to the invention.
  • Figure 4 shows in perspective the device when it was used.

A la figure 1, on a représenté une ligne de vie 1 disposée horizontalement le long d'un bâtiment ; sur celle-ci est mobile un organe coulissant 2 relié par un câble 3 à un harnais 4 destiné à être porté par un ouvrier travaillant à des endroits élevés.In Figure 1, there is shown a lifeline 1 disposed horizontally along a building; on it is movable a sliding member 2 connected by a cable 3 to a harness 4 intended to be worn by a worker working at high places.

La ligne de vie est fixée par ses extrémités à des ancrages 7.The lifeline is fixed at its ends to anchors 7.

Sur la ligne de vie 1 est inséré, au voisinage d'un ancrage 7, le dispositif selon l'invention et qui est référencé en 5.On the lifeline 1 is inserted, in the vicinity of an anchor 7, the device according to the invention and which is referenced in 5.

Le dispositif est constitué de deux plaquettes allongées 6 et 8 découpées, par exemple dans une plaque métallique. La plaquette 6 a une forme allongée avec, à une extrémité, un trou circulaire 9 destiné à être traversé par un organe d'accrochage du câble 3.The device consists of two elongated plates 6 and 8 cut, for example in a metal plate. The wafer 6 has an elongated shape with, at one end, a circular hole 9 intended to be traversed by a hooking member of the cable 3.

A son autre extrémité, la plaquette 6 est percée d'un trou 10 dans lequel est monté un doigt constitué par un rivet 11 sur lequel est montée une large rondelle 12.At its other end, the plate 6 is pierced with a hole 10 in which is mounted a finger constituted by a rivet 11 on which is mounted a large washer 12.

La plaquette 6 présente une découpe longitudinale 14 ménageant une série de barrettes parallèles 15 transversales à l'axe longitudinal de ladite plaquette 6.The wafer 6 has a longitudinal cutout 14 forming a series of parallel strips 15 transverse to the longitudinal axis of said wafer 6.

Les barrettes 15 ont une forme en V dont la pointe est tournée vers le rivet 11.The bars 15 have a V shape whose tip is turned towards the rivet 11.

La seconde plaquette 8 est identique à la première plaquette 6 et est disposée tête-bêche par rapport à ladite première plaquette 6.The second plate 8 is identical to the first plate 6 and is arranged head to tail with respect to said first plate 6.

La seconde plaquette 8 comporte, à une extrémité, un trou 17 destiné à la fixation du câble 3 et, à l'autre extrémité, un trou 18 dans lequel est fixé un doigt constitué par un rivet 19 sur lequel est montée une rondelle 20.The second plate 8 comprises, at one end, a hole 17 for fixing the cable 3 and, at the other end, a hole 18 in which is fixed a finger formed by a rivet 19 on which is mounted a washer 20.

La plaquette 8 comporte une découpe 21 ménageant une série de barrettes 22 transversales à l'axe longitudinal de la plaquette 8. Les barrettes 22 sont parallèles entre elles et en forme de V dont la pointe est tournée vers le rivet 19.The wafer 8 has a cut-out 21 forming a series of strips 22 transverse to the longitudinal axis of the wafer 8. The wales 22 are parallel to each other and in the shape of a V whose point is turned towards the rivet 19.

En position d'utilisation, le rivet 11 traverse la découpe 21 et vient se loger entre l'extrémité 21a de ladite découpe et la barrette 22 adjacente à cette extrémité, la rondelle 12 portant sur la face libre de la plaquette 8.In the position of use, the rivet 11 passes through the cutout 21 and is housed between the end 21a of said cutout and the bar 22 adjacent to this end, the washer 12 bearing on the free face of the wafer 8.

Le rivet 19 traverse la découpe 14 et est disposé entre l'extrémité 14a de la découpe 14 et la barrette adjacente à cette extrémité, la rondelle 20 portant contre la face libre de la plaquette 8 opposée à celle tournée du côté de la plaquette 6.The rivet 19 passes through the cutout 14 and is disposed between the end 14a of the cutout 14 and the bar adjacent to this end, the washer 20 bearing against the free face of the wafer 8 opposite to that turned towards the wafer 6.

Si l'utilisateur vient à chuter accidentellement, le câble 3 se tend et, sous le poids de l'utilisateur, la ligne de vie 1 est sollicitée en tension de sorte que la plaquette 6 tend à glisser par rapport à la plaquette 8, le rivet 11 engendrant une rupture des barrettes 22, tandis que le rivet 19 casse les barrettes 15.If the user falls accidentally, the cable 3 is stretched and, under the weight of the user, the lifeline 1 is stressed in tension so that the plate 6 tends to slide relative to the plate 8, the rivet 11 causing a rupture of the bars 22, while the rivet 19 breaks the bars 15.

On a ainsi un amortissement progressif.There is thus a progressive damping.

On conçoit que le dispositif, selon l'invention, est particulièrement simple, peu onéreux à fabriquer et offre une grande sécurité.It is understood that the device according to the invention is particularly simple, inexpensive to manufacture and offers great security.

Bien entendu, l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit et représenté. On pourra y apporter de nombreuses modifications de détail sans sortir pour cela du cadre de l'invention.Of course, the invention is not limited to the embodiment just described and shown. It will be possible to make many changes in detail without departing from the scope of the invention.

Claims (4)

Dispositif absorbeur d'énergie pour ligne de vie destiné à être inséré sur un câble (1) constituant une ligne de vie disposée le long d'un bâtiment et comportant, à une extrémité, un trou (17) pour la fixation d'une extrémité du câble (1) et, à l'autre extrémité, un trou (9) pour la fixation de l'autre extrémité d'un câble (1), caractérisé en ce qu'il est constitué de deux plaquettes (6, 8) superposées et susceptibles de glisser l'une par rapport à l'autre, chaque plaquette (6, 8) comportant une découpe (14, 21) ménageant une série de barrettes (15, 22) s'étendant transversalement à l'axe longitudinal desdites plaquettes (6, 8) et un doigt (11, 19) traversant la découpe de l'autre plaquette (6, 8) au voisinage des trous (9, 17) pour la fixation des extrémités du câble (1).Energy absorbing device for a lifeline intended to be inserted on a cable (1) constituting a lifeline arranged along a building and comprising, at one end, a hole (17) for fastening an end of the cable (1) and, at the other end, a hole (9) for fixing the other end of a cable (1), characterized in that it consists of two plates (6, 8) superimposed and slidable relative to each other, each plate (6, 8) having a cutout (14, 21) forming a series of bars (15, 22) extending transversely to the longitudinal axis of said plates (6, 8) and a finger (11, 19) passing through the cutout of the other plate (6, 8) in the vicinity of the holes (9, 17) for fixing the ends of the cable (1). Dispositif absorbeur d'énergie pour ligne de vie, selon la revendication 1, caractérisé en ce que les doigts (11, 19) sont constitués par des rivets sur lesquels sont montées des rondelles (20, 12) portant contre la face des plaquettes opposée à celle tournée l'une en regard de l'autre.Energy absorbing device for life-line, according to claim 1, characterized in that the fingers (11, 19) are constituted by rivets on which are mounted washers (20, 12) bearing against the face of the plates opposite to that turned one facing the other. Dispositif absorbeur d'énergie pour ligne de vie, selon la revendication 1, caractérisé en ce que les barrettes (15, 22) affectent une forme V dont la pointe est tournée du côté de l'extrémité de la découpe pourvue du doigt (11, 19).Energy absorbing device for life-line, according to claim 1, characterized in that the bars (15, 22) have a V shape whose tip is turned towards the end of the cutout provided with the finger (11, 19). Dispositif absorbeur d'énergie pour ligne de vie, selon la revendication 1, caractérisé en ce que les deux plaquettes (6, 8) sont identiques et tournées tête-bêche l'une par rapport à l'autre.Energy absorbing device for life line, according to claim 1, characterized in that the two plates (6, 8) are identical and turned head to tail with respect to each other.
EP05291335A 2004-06-29 2005-06-22 Energy absorbing device for a lifeline Withdrawn EP1611924A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0407134A FR2872057B1 (en) 2004-06-29 2004-06-29 ENERGY ABSORBER DEVICE FOR LIFE LINE

Publications (1)

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EP1611924A1 true EP1611924A1 (en) 2006-01-04

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Family Applications (1)

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EP05291335A Withdrawn EP1611924A1 (en) 2004-06-29 2005-06-22 Energy absorbing device for a lifeline

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US (1) US20050284694A1 (en)
EP (1) EP1611924A1 (en)
FR (1) FR2872057B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920997A1 (en) * 2007-09-19 2009-03-20 Ajuva Safety Sarl Potential and kinetic energy absorbing device for e.g. cable fixation stud, has male unit with teeth stopped and deformed against rim of opening for limiting or blocking relative sliding of male and female units subjected to traction force
LU101596B1 (en) * 2020-01-08 2021-07-09 Capital Access S A Energy absorber device for lifeline

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US8925679B2 (en) * 2011-01-28 2015-01-06 Tuffbuilt Products Inc. Apparatus for receiving shock loading
US9707421B2 (en) 2013-02-08 2017-07-18 D B Industries, Llc Energy absorber cover
EP2982417B1 (en) * 2014-08-04 2018-07-04 Honeywell International Inc. Deformable energy absorber with deformation indicator
DE102017116701A1 (en) * 2017-07-24 2019-01-24 Liftair Gmbh Energy absorber for an aircraft rescue or landing system
GB2609632B (en) * 2021-08-10 2024-02-14 Rapid Rail International Ltd Fall arrest device
AU2021106324A4 (en) * 2021-08-17 2021-11-04 Sayfa R&D Pty Ltd A fall arrest and rope access roof mount anchor
GB2614135B (en) * 2021-08-17 2024-07-10 Sayfa R&D Pty Ltd A fall arrest roof mount anchor
US20240261604A1 (en) * 2022-03-16 2024-08-08 Beaver Technology Services Pty Limited Height safety davit with fail-safe mechanism

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US4538702A (en) * 1983-03-21 1985-09-03 D B Industries, Inc. Shock absorber for fall protection system
WO1999051304A2 (en) * 1998-04-02 1999-10-14 Choate, Gary, A. Energy absorption device for fall arrest systems

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DE7219172U (en) * 1975-04-24 Daimler Benz Ag Arrangement for fastening a seat belt in a motor vehicle
US3563498A (en) * 1968-11-22 1971-02-16 Stencel Aero Eng Corp Device for applying a restraining and stabilizing force to a moving object
DE2460163A1 (en) * 1974-12-19 1976-06-24 Volkswagenwerk Ag Safety belt stress limiting device - longitudinal portion with cut outs is ripped apart when predeter-mined stress exceeded
FR2299433A1 (en) * 1975-01-30 1976-08-27 Lambin Et Ravau Strap for e.g. parachute harness - has weft yarns allowing strap to rip longitudinally under predetermined force
US4538702A (en) * 1983-03-21 1985-09-03 D B Industries, Inc. Shock absorber for fall protection system
WO1999051304A2 (en) * 1998-04-02 1999-10-14 Choate, Gary, A. Energy absorption device for fall arrest systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920997A1 (en) * 2007-09-19 2009-03-20 Ajuva Safety Sarl Potential and kinetic energy absorbing device for e.g. cable fixation stud, has male unit with teeth stopped and deformed against rim of opening for limiting or blocking relative sliding of male and female units subjected to traction force
LU101596B1 (en) * 2020-01-08 2021-07-09 Capital Access S A Energy absorber device for lifeline

Also Published As

Publication number Publication date
US20050284694A1 (en) 2005-12-29
FR2872057B1 (en) 2006-09-15
FR2872057A1 (en) 2005-12-30

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