EP0752255B2 - Bewegliches Absturzsicherungsgerät für flexibles Rettungsseil - Google Patents

Bewegliches Absturzsicherungsgerät für flexibles Rettungsseil Download PDF

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Publication number
EP0752255B2
EP0752255B2 EP96410075A EP96410075A EP0752255B2 EP 0752255 B2 EP0752255 B2 EP 0752255B2 EP 96410075 A EP96410075 A EP 96410075A EP 96410075 A EP96410075 A EP 96410075A EP 0752255 B2 EP0752255 B2 EP 0752255B2
Authority
EP
European Patent Office
Prior art keywords
lever
ramp
axis
fall device
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96410075A
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English (en)
French (fr)
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EP0752255B1 (de
EP0752255A1 (de
Inventor
Laurent Cherpitel
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SK Sarl
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SK Sarl
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Application filed by SK Sarl filed Critical SK Sarl
Publication of EP0752255A1 publication Critical patent/EP0752255A1/de
Publication of EP0752255B1 publication Critical patent/EP0752255B1/de
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Classifications

    • 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
    • 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
    • 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 device of the individual pivoting lever against falls in height. It relates to a mobile fall arrester for belay support more particularly adapted to vertical belay supports, especially flexible, such as cables or ropes.
  • 2,668,937 discloses a fall arrest device with a mechanism making accidental cable release impossible
  • a fall arrest device marketed under the CABLOC brand AC 350, according to the preamble of claim 1, which includes a control device deformable parallelogram type to which a carabiner is attached.
  • the known devices are not entirely satisfactory in terms of their convenience of use and their reliability.
  • the present invention provides a new particularly safe, reliable and convenient to put on in action.
  • the mobile fall arrester for belay support such as a cable or rope
  • the mobile fall arrester for belay support is type comprising an axle retaining groove, in which the said belay support is retained thanks to a cam, integral with a pivoting lever between a position opening that allows the passage of the belay support in the throat and a closed position, which limits the passage of the belay support in the groove
  • the free end of the pivoting lever comprises a hole intended to receive a carabiner, while that a stop system for the carabiner limits the pivoting of the lever in an intermediate position when moving from the closing position to the position opening when the carabiner is engaged in the hole.
  • the retaining groove is made by the wall of a main flange, while that the fall arrester includes a secondary flange consisting of a wall, the lever being pivotally mounted between the two flanges.
  • a longitudinal and parallel passage is provided at the axis of the groove, said passage being limited laterally on the one hand, the first border of the flange main and, secondly, the first border of the second flange.
  • the second borders include a clearance allowing the lever to move with its carabiner and delimiting the stops defining the position intermediate lever.
  • the second side border of each flanges includes a succession of two ramps, a lower ramp set back from a upper ramp to form the clearance.
  • the ramp lower is circular with radius centered on the axis, while that the upper ramp is circular with a centered radius on the axis, knowing that the radius of said upper ramp is greater than the radius of said lower ramp, the clearance formed by the lower recessed ramp, is limited upwards by the stops arranged radially and substantially in the horizontal plane passing by the pivot axis of the lever.
  • the lever cam is constituted by a locking ramp extended by an unlocking ramp, while the width of the lever is such that it does protrudes beyond the upper ramps when the lever is in the extreme open position.
  • Figure 1 is an overview illustrating how the fall arrest device of the invention is used.
  • Figure 2 is a side view showing more particularly the fall arrester mounted on the belay cable and its connection to the hamais worn by the user.
  • Figures 3, 4 and 5 are execution views fall protection;
  • Figure 3 is a plan view
  • Figure 4 is a side view on the lever side
  • FIG. 5 is a top view.
  • Figure 6 is a view similar to Figure 3 but illustrating the fall arrester, in its open position extreme showing the different components the fall.
  • FIG. 7a is an exploded perspective view, while Figure 7b is a perspective showing the fall arrester fitted.
  • FIGS 8 to 12 illustrate the different steps of setting up the fall arrest device of the invention.
  • Figure 13 shows how is used the fall arrester according to the invention.
  • Figure 14 is a view similar to Figure 5 representing a variant with a cut partial along the pivot axis of the lever.
  • FIGS. 15 and 16 illustrate a variant of execution, FIGS. 15 and 16 being similar views in Figures 3 and 6.
  • the mobile fall arrester (1) is part of an equipment personal protection against falls from a height bearing the general reference (2) and comprising in plus said fall arrester (1) a harness (3) carrying at least a mooring loop (4) with a snap hook (5), said fall arrester (2) being intended to be connected removably on a belay support (6) vertical fixed, for example, on an intervention pylon (7).
  • the mobile fall arrester (1) In its position of use, i.e. connected with the harness (3), the mobile fall arrester (1) can be at will moved up (HA) or down (BA) by sliding normal (i.e. ascent rate or user descent) along the vertical cable (6) constituting the belay support which can, by elsewhere, be constituted by a rope. In the event of a fall, which corresponds to an accelerated descent speed, the mobile fall arrester hangs on the cable.
  • the user (8) can then climb or descend along the pylon (7) while sliding the fall arrester up (HA) or down (BA) along the cable safety (6), if necessary, while it will be insured not to drop down by blocking its fall arrester (1) on said cable (6) constituting the support belay.
  • the fall arrester (1) essentially comprises a straight hollow profile (9) intended to receive the cable belay (6) retained there after engagement, thanks to a pivotally movable cam (10).
  • the profile hollow (9) is constituted by the wall (11 a) of a flange main (12a) of which the first lateral border (13a) is folded parallel to said wall, so as to form a semicircular gutter or groove (9), while that the second side border (14a) is in the wall plane and is curved to understand its part lower clearance (15a).
  • the throat has a semicircular profile with a vertical axis (YY ') and has substantially the dimension of the cable intended to be housed there.
  • the locking cam (10) is integral an operating and latching lever (16) which is pivotally mounted on the fall arrester around a transverse axis (XX ').
  • the second side border (14a) includes a succession of two ramps, a ramp lower (17a) set back from an upper ramp (18a) to form the clearance (15a).
  • the lower ramp is circular with radius (R1) centered on the axis (XX '), while the upper ramp is circular radius (R2) centered on the axis (XX ') knowing that the radius (R2) of said upper ramp is greater than the radius (R1) of said lower ramp.
  • the release (15a) whose function will be explained later in the description, formed by the lower recessed ramp, is limited upwards by a stop (20a) arranged radially and substantially in the horizontal plane (H) passing through the pivot axis (XX ') of the lever (16).
  • the body of the mobile fall arrester includes, in plus the main flange (12a) described above and forming the groove (9), a secondary flange (12b).
  • This the latter is integral with the main flange to be parallel thereto and spaced by a distance (d) to constitute, on the one hand, a space (e) between the two flanges intended movement of the lever (16) and, on the other hand, a longitudinal passage (40) for cable engagement (40).
  • the secondary flange has an identical configuration to the wall (11a) of the main flange (12a).
  • the second border lateral (14b) comprises a succession of two ramps, a lower ramp (17b) set back relative to an upper ramp (18b) to form the clearance (15b).
  • the lower ramp is circular with radius (R1) centered on the axis (XX '), while the upper ramp is circular with radius (R2) centered on the axis (XX '), knowing that the radius (R2) of said upper ramp is greater than the radius (R1) of said lower ramp.
  • the clearance (15b) whose function will be explained further in the description, formed by the ramp lower recessed, is limited upward by a stop (20b) arranged radially and substantially in the horizontal plane (H) passing through the pivot axis (XX ') lever (16).
  • the passage (40) is limited laterally by the first edge (13a) of the flange main (12a) and the first border (13b) of the flange secondary (12b).
  • the width of the passage is greater than the diameter of the cable (6) intended to be there engaged, said passage extending parallel to the axis (YY ') of the throat.
  • the lever (16) previously mentioned is disposed movable in pivoting around the axis (XX '). It is arranged to move between the two flanges (12a, 12b), in the space (e) formed between the main flange (12a) and the secondary flange (12b). So he went up rotating around an axis (21) extending between the two flanges so that its hooking end (22) extends beyond the lower ramps (17a, 17b) of two flanges (12a, 12b), in the area created by the clearances (15a, 15b).
  • Said free hooking end (22) further includes a hooking hole (23) intended to receive the hooking carabiner (5) which can be engaged thanks to the clearance (15a, 15b) provided on the edges of the flanges (12a, 12b).
  • the hole attachment (23) is cylindrical and its axis (QQ ') is at a distance (L1) from the axis (XX ') between the value the radius (R1) of the lower ramp (17a, 17b) and the value of the radius (R2) of the upper ramp (18a, 18b).
  • its diameter is such that its peripheral wall (24) either at a distance (L2) from the upper axis (XX ') to the radius (R2).
  • the lever (16) comprises on the side opposite the hanging hole (23) a cam (10) formed by a locking ramp (25) to ensure the fall arrester lock (1) on the extended belay cable by a ramp for unlocking (26) the fall arrester allowing the sliding of said fall arrester on said cable belay (6).
  • the lever (16) being able to take rotation around the axis (XX ') two extreme positions, an open position as illustrated in FIGS. 6 and 8, and a closed position as shown in the figures 3, 10, 11 and 12.
  • the lever is constantly used towards its closed position by a torsion spring (27).
  • the latter is useful, on the one hand, for maintaining in place fall arrester (1) on the belay cable (6) when the installation and removal of the carabiner (5) and, on the other hand, to ensure a blockage of the fall arrester in the event of a fall, even before the carabiner (5) does not have to ensure by itself the pivoting of the lever down.
  • the fall arrester has two stops (28, 29) to limit the angular displacement of the lever down by a lower stop (28) and towards the top by an upper stop (29).
  • the lower stop (28) is produced by a small transverse wall (30) extending between the two flanges (12a, 12b) in the lower ramps area (17a, 17b), while the upper stop (29) is produced by a cylindrical spacer connecting the upper position of the two flanges (12a, 12b).
  • Figures 8 to 12 illustrate the different steps of setting up the fall arrest device of the invention.
  • the user by fitting the first flange (12a) of the fall arrester (1) in the palm of the right hand rotate with its thumb the lever (16) upwards along R1 to release the passage (40) for the cable. He brings the fall arrester (1) on the cable (6) to pass said cable (6) to the passage (40), as illustrated in FIG. 8. Then it engages the cable (6) in the groove (9) and releases the lever (16), as illustrated in figure 9.
  • the lever (16) biased by the spring (27) pivots downward along (R2) until the locking ramp (25) pinches the cable thus retaining it in the groove (9), as this is shown in Figure 10.
  • the fall arrester (1) is blocked against any untimely descent down (BA) preventing the user from falling but can be moved up (HA) by rotation towards the top along (R1) of the lever (16), as illustrated in figure 13.
  • BA untimely descent down
  • R1 the lever (16) upwards (HA) according to (R2) until the carabiner is in abutment on the stops (20a) and (20b) flasks.
  • the lever prohibits any possibility of the cable leaving the groove (9) and as soon as the lever is released, it pivots again down according to (R1), which causes blocking on the fall arrest cable.
  • the fall arrester includes a system of stops (20a, 20b) for the carabiner, stop system which limits pivoting of the lever in an intermediate position when the user passes this lever from the closed position towards the open position. It is then impossible the user to exceed this intermediate position, and it is then impossible for the cable to leave the groove retaining, the cam (10) still being engaged in the cable retention area, as shown in the figure 13. Note also that the clearance (1 Sa, 15b) allows the carabiner (5) to move and therefore the lever (16) from the closed position to the position intermediary according to which the carabiner is in support on the two stops (20a, 20b).
  • the fall protection is advantageously metallic like, for example, stainless steel.
  • Figure 14 shows an alternative embodiment that the lever (16) does not rub against the wall (11a) of the first flange (12a). To this end, provision is made a washer (210) disposed around the axis (21) between said lever (16) and the wall (11a), as it appears on the drawing in the sectioned area.
  • Figures 15 and 16 are views illustrating a variant according to which the blocking ramp (25) comprises two locking projections, namely, an upper projection (250) and a lower projection (251). Furthermore, according to this variant, the lower ramp (17a, 17b) extends over a greater length than before to extend beyond and above from the horizontal plane (H). Note also that it is planned a complementary security organ constituted by a pivoting pawl (40) urged to close by a spring. Said pawl (50) being intended to condemn the release untimely belay support (6) by the passage (40).

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Emergency Lowering Means (AREA)
  • Impact Printers (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Claims (6)

  1. Bewegliche Absturzsicherung für eine Rettungsstütze (6), wie z. B. ein Kabel oder einen Strick, der Art mit einer Halterille (9) einer Achse (YY'), in der die Rettungsstütze mittels eines Nockens (10) gehalten wird, der fest mit einem Hebel (16) verbunden ist, der zwischen einer Öffnungsstellung, welche das Durchlaufen der Rettungsstütze (6) in der Rille (9) zuläßt, und einer Schließstellung, welche den Durchlauf der Rettungsstütze (6) in der Rille (9) begrenzt, verschwenkbar ist, wobei das freie Ende des verschwenkbaren Hebels (16) ein Loch (23) aufweist, das zur Aufnahme eines Karabinerhakens (5) dient, wobei ein Anschlagsystem für den Karabinerhaken das Verschwenken des Hebels in eine Zwischenstellung begrenzt, sobald man von der Schließstellung in Richtung zur Öffnungsstellung verschwenkt, wenn der Karabinerhaken in Eingriff mit dem Loch (23) steht, wobei die Halterille (9) durch die Wand (11a) eines Hauptflansches (12a) gebildet wird und die Absturzsicherung einen Nebenflansch (12b) umfaßt, der durch eine Wand (11 b) gebildet wird, wobei ferner der Hebel (16) zwischen den beiden Flanschen (12a, 12b) verschwenkbar montiert ist, dadurch gekennzeichnet, daß das Anschlagsystem durch Anschläge (20a, 20b) der Flansche (12a, 12b) gebildet wird, damit in der Zwischenstellung, in welcher der Karabinerhaken (5) gegen die Anschläge (20a, 20b) der Flansche anliegt, der Hebel jedwede Möglichkeit eines Austretens des Kabels aus der Rille (9) verhindert.
  2. Absturzsicherung nach Anspruch 1, dadurch gekennzeichnet, daß sie einen in Längsrichtung und parallel zur Achse (YY') der Rille (9) verlaufenden Durchlaß (40) umfaßt, wobei der Durchlaß seitlich einerseits von einem ersten Rand (13a) des Hauptflansches (12a) und andererseits von einem ersten Rand (13b) des zweiten Flansches begrenzt ist.
  3. Absturzsicherung nach Anspruch 2, dadurch gekennzeichnet, daß zweite Ränder (14a, 14b) einen Freischnitt (15a, 15b) aufweisen, der das Verschieben des Hebels (16) mit seinem Karabinerhaken (5) zuläßt und die Anschläge (20a, 20b) begrenzt, welche die Zwischenstellung des Hebels festlegen.
  4. Absturzsicherung nach Anspruch 3, dadurch gekennzeichnet, daß der zweite Seitenrand jedes Flansches (14a, 14b) zwei aufeinanderfolgende Rampen umfaßt, wobei eine untere Rampe (17a, 17b) relativ zu einer oberen Rampe (18a, 18b) zurückspringt, um den Freischnitt (15a) zu bilden. Die untere Rampe ist in Form eines Kreises mit einem Radius (R1) um die Achse (XX'), die obere Rampe dagegen in Form eines Kreises mit einem Radius (R2) um die Achse (XX') ausgebildet, wobei femer der Radius (R2) der oberen Rampe größer als der Radius (R1) der unteren Rampe ist und der durch die zurückspringende untere Rampe gebildete Freischnitt (15a, 15b) nach oben durch die Anschläge (20a, 20b) begrenzt wird, die radial und im wesentlichen in der durch die Achse (XX') der Schwenkbewegung des Hebels (16) verlaufenden, horizontalen Ebene (H) angeordnet sind.
  5. Absturzsicherung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Nocken (10) aus einer Blockierrampe (25) besteht, die durch eine Entriegelungsrampe (26) verlängert ist.
  6. Absturzsicherung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Länge des Hebels (16) dergestalt ist, daß er über die oberen Rampen (18a, 18b) vorsteht, wenn sich der Hebel in seiner äußersten Öffnungsstellung befindet.
EP96410075A 1995-07-03 1996-06-27 Bewegliches Absturzsicherungsgerät für flexibles Rettungsseil Expired - Lifetime EP0752255B2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9508216A FR2736273A1 (fr) 1995-07-03 1995-07-03 Antichute mobile pour support d'assurage
FR9508216 1995-07-03
CA002198027A CA2198027A1 (fr) 1995-07-03 1997-02-19 Dispositif d'antichute mobile pour support d'assurage
US08/805,059 US5860493A (en) 1995-07-03 1997-02-24 Fall preventing mechanism for safety lines

Publications (3)

Publication Number Publication Date
EP0752255A1 EP0752255A1 (de) 1997-01-08
EP0752255B1 EP0752255B1 (de) 2000-11-29
EP0752255B2 true EP0752255B2 (de) 2004-06-30

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ID=27170280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96410075A Expired - Lifetime EP0752255B2 (de) 1995-07-03 1996-06-27 Bewegliches Absturzsicherungsgerät für flexibles Rettungsseil

Country Status (7)

Country Link
US (1) US5860493A (de)
EP (1) EP0752255B2 (de)
AT (1) ATE197769T1 (de)
CA (1) CA2198027A1 (de)
DE (1) DE69611064T3 (de)
ES (1) ES2153947T5 (de)
FR (1) FR2736273A1 (de)

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DE202012008377U1 (de) * 2012-08-31 2013-01-14 Skylotec Gmbh Läufer für ein Sicherungssystem mit einer Führungsschiene
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CN105339050A (zh) * 2013-06-28 2016-02-17 凯比特安全设备集团（澳大利亚）有限公司 防坠器
KR20180034306A (ko) * 2015-03-23 2018-04-04 캐피탈 세이프티 그룹 (노턴 유럽) 리미티드 케이블 트래블러
EP3133706A1 (de) 2015-08-19 2017-02-22 Zurecon AG Verfahren zur installation von stromschienen
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ITUB20154778A1 (it) * 2015-10-27 2017-04-27 Aludesign Spa Dispositivo anticaduta.
DE102018102325B4 (de) * 2018-02-01 2021-01-21 Bornack Gmbh & Co. Kg Sicherungsvorrichtung
US11358031B2 (en) * 2019-05-28 2022-06-14 International Business Machines Corporation Safety device for assisting a user to traverse a structure
US11850199B2 (en) * 2021-04-05 2023-12-26 Match Grade Medical Llc Medical traction system with low back-travel
CN113398552B (zh) * 2021-07-08 2022-12-13 江西环境工程职业学院 一种可用于室内攀登的保护型套索
CN116747465B (zh) * 2023-06-06 2025-10-31 南京问度智能物联有限公司 防坠落绳安全锁扣和防坠落绳装设装置
FR3158692B1 (fr) * 2024-01-30 2026-02-06 Sigma Composite Véhicule de transport de personne, installation de transport par cable

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Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Notice PROTECTA INTERNATIONAL référencée AC350 †

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DE69611064T2 (de) 2001-07-19
EP0752255B1 (de) 2000-11-29
DE69611064D1 (de) 2001-01-04
EP0752255A1 (de) 1997-01-08
CA2198027A1 (fr) 1998-08-19
FR2736273A1 (fr) 1997-01-10
ATE197769T1 (de) 2000-12-15
US5860493A (en) 1999-01-19
ES2153947T3 (es) 2001-03-16
DE69611064T3 (de) 2006-05-11
ES2153947T5 (es) 2004-12-01

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