EP0752255B1 - Bewegliches Absturzsicherungsgerät für flexibles Rettungsseil - Google Patents

Bewegliches Absturzsicherungsgerät für flexibles Rettungsseil Download PDF

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Publication number
EP0752255B1
EP0752255B1 EP96410075A EP96410075A EP0752255B1 EP 0752255 B1 EP0752255 B1 EP 0752255B1 EP 96410075 A EP96410075 A EP 96410075A EP 96410075 A EP96410075 A EP 96410075A EP 0752255 B1 EP0752255 B1 EP 0752255B1
Authority
EP
European Patent Office
Prior art keywords
lever
ramp
axis
fall device
radius
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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EP0752255B2 (de
EP0752255A1 (de
Inventor
Laurent Cherpitel
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.)
SK Sarl
Original Assignee
SK Sarl
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Filing date
Publication date
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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
Application granted granted Critical
Publication of EP0752255B2 publication Critical patent/EP0752255B2/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 safety device for the pivoting lever individual against falls from a height. It relates to a fall arrest system mobile for belay support more particularly adapted to supports vertical belay devices, in particular flexible belay devices, such as cables or ropes.
  • the present invention provides a new device particularly safe, reliable and convenient to use.
  • the mobile fall arrester for support belay device such as a cable or rope
  • the mobile fall arrester for support belay device is of the type comprising a axis retaining groove, in which said belay support is retained thanks to a cam, integral with a pivoting lever between an open position which allows the passage of the belay support in the groove and a position of closure, which limits the passage of the belay support in the groove, characterized in that the free end of the pivoting lever comprises a hole intended to receive a carabiner, while a stop system for the carabiner limits the pivoting of the lever in an intermediate position when passing from the closed position to the open position when the carabiner is engaged in the hole.
  • the retaining groove is produced through the wall of a main flange, while the fall arrester includes a secondary flange constituted by a wall, the lever being pivotally mounted between the two flanges.
  • a longitudinal and parallel passage to the axis of the groove said passage being limited laterally by, on the one hand, the first border of the main flange and, on the other hand, the first border of the second flaccid.
  • the second borders include a clearance allowing the movement of the lever with its carabiner and delimiting the stops defining the intermediate position of the lever.
  • the second side border of each of the flanges includes a succession of two ramps, a lower ramp set back from an upper ramp to form the clearance.
  • the lower ramp is circular radius centered on the axis
  • the upper ramp is circular radius centered on the axis, knowing that the radius of said ramp upper is greater than the radius of said lower ramp, the clearance formed by the lower recessed ramp, is limited towards the high by the stops arranged radially and substantially in the plane horizontal passing through the pivot axis of the lever.
  • the lever cam consists of a locking ramp extended by a release ramp, while the width of the lever is such that it does protrudes beyond the upper ramps when the lever is in position of extreme opening.
  • Figure 1 is an overview showing how is used the fall arrest device of the invention.
  • Figure 2 is a side view showing more particularly the fall arrester mounted on the belay cable and its connection to the harness carried by the user.
  • FIGs 3, 4 and 5 are execution views of the fall arrester; the FIG. 3 is a plan view, FIG. 4 is a side view on the lever side, while Figure 5 is a top view.
  • Figure 6 is a view similar to Figure 3 but illustrating the fall arrester, in its extreme opening position showing the different elements constituting the fall arrester.
  • Figure 7a is an exploded perspective view, while Figure 7b is a perspective representing the mounted fall arrester.
  • FIGS 8 to 12 illustrate the different stages of implementation of the fall arrest device of the invention.
  • Figure 13 shows how fall arrest is used according to the invention.
  • Figure 14 is a view similar to Figure 5 showing a variant with partial cut along the pivot axis lever.
  • Figures 15, 16 and 17 illustrate an alternative embodiment, the Figures 15 and 16 being views similar to Figures 3 and 6.
  • the mobile fall arrester (1) is part of protective equipment individual against falls from a height with the general reference (2) and comprising in addition to said fall arrester (1) a harness (3) carrying the minus a mooring loop (4) with a snap hook (5), said fall arrester (2) being intended to be removably connected to a vertical belay support (6) fixed, for example, on a pylon intervention (7).
  • the mobile fall arrester (1) In its position of use, that is to say connected to the harness (3), the mobile fall arrester (1) can be moved upwards (HA) or down (BA) by normal sliding (i.e. at speed user ascending or descending) along the vertical cable (6) constituting the belay support which can, moreover, be constituted by a rope. In the event of a fall, which corresponds to a descent speed accelerated, the mobile fall arrester hangs on the cable.
  • the user (8) can then climb or descend along the pylon (7) by letting the fall arrester slide up (HA) or down (BA) the along the safety cable (6), if necessary, while it will be ensured do not fall down by blocking its fall arrester (1) on said cable (6) constituting the belay support.
  • the fall arrester (1) essentially comprises a hollow profile (9) straight intended to receive the belay cable (6) which is retained there after engagement, thanks to a pivotally movable cam (10).
  • the profile hollow (9) is constituted by the wall (11a) of a main flange (12a) whose first side border (13a) is folded parallel to said wall, so as to form a gutter or a semi-circular groove (9), while the second lateral border (14a) is in the plane of the wall and is curved to include a clearance at the bottom (15a).
  • the groove has a semi-circular 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 with an operating lever and hook (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 lower ramp (17a) set back by relative to 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 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 (15a) whose function will be explained later in the description, formed by the lower recessed ramp, is limited to the high 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 addition to the flange main (12a) described above and forming the groove (9), a flange secondary (12b).
  • the latter is integral with the main flange for him be parallel and spaced by a distance (d) to constitute, on the one hand, a space (e) between the two flanges intended for the movement of the lever (16) and, on the other hand, a longitudinal passage (40) for the engagement of the cable (40).
  • the secondary flange has a configuration identical to the wall (11a) of the main flange (12a).
  • the second side border (14b) comprises a succession of two ramps, a lower ramp (17b) set back from a ramp upper (18b) to form the clearance (15b).
  • the lower ramp is circular with radius (R1) centered on the axis (XX '), while the ramp upper 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 passage (40) is laterally limited by the first border (13a) of the main flange (12a) and the first border (13b) of the secondary flange (12b).
  • the width of the passage is greater than the diameter of the cable (6) intended to be engaged therein, said passage extending parallel to the axis (YY ') of the throat.
  • the lever (16) previously mentioned is disposed movable in pivot 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). It is thus rotatably mounted around an axis (21) extending between the two flanges so that its end attachment (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 comprises a hole hook (23) for receiving the snap hook (5) which can be engaged thanks to the clearance (15a, 15b) provided on the edges flanges (12a, 12b).
  • the hanging hole (23) is cylindrical and its axis (QQ ') is at a distance (L1) from the axis (XX') between the value of 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 hole hooking (23) a cam (10) constituted by a locking ramp (25) to block the fall arrester (1) on the belay cable extended by a ramp for unlocking (26) the fall arrester allowing the sliding of said fall arrester on said belay cable (6).
  • the lever (16) can be rotated around the axis (XX ') two positions extremes, an open position as illustrated in FIGS. 6 and 8, and a closed position as shown in Figures 3, 10, 11 and 12.
  • the lever is constantly biased towards its position of closing with a torsion spring (27).
  • the latter is useful, on the one hand, maintaining the fall arrester (1) on the belay cable (6) at moment of fitting and removing the carabiner (5) and, on the other part, to ensure that the fall arrester is locked in the event of a fall, before even that 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 movement of the lever downwards by a stop lower (28) and upwards by an upper stop (29).
  • Stop lower (28) is produced by a small transverse wall (30) extending between the two flanges (12a, 12b) in the area of the ramps lower (17a, 17b), while the upper stop (29) is produced by an upper cylindrical spacer connecting the upper position of the two flanges (12a, 12b).
  • Figures 8 to 12 illustrate the different stages of implementation of the fall arrest device of the invention.
  • the user by putting the first flange (12a) of the fall arrester (1) in the palm of the right hand rotate with his thumb the lever (16) upwards along R1 to clear the passage (40) for the cable. He brings the fall arrester (1) on the cable (6) to make pass said cable (6) for passage (40), as illustrated in the figure 8. Then he engages the cable (6) in the groove (9) and releases the lever (16), as illustrated in FIG. 9.
  • the lever (16) urged by the spring (27) pivots downwards along (R2) until the ramp blocking (25) pinch the cable, thus retaining it in the groove (9), as shown in Figure 10.
  • the user then installs a carabiner (5) by engaging it in the hole (23) of the lever (16), as illustrated in FIG. 11. Then, it fixes its harness (3) to the carabiner, for example, through the loops mooring (4), as shown in Figure 12.
  • the fall arrester (1) is blocked against any untimely descent to the bottom (BA) preventing the fall of the user but can be moved up (HA) by rotation upwards along (R1) of the lever (16), as illustrated in the figure 13.
  • the user swivels the lever (16) upwards (HA) according to (R2) until the carabiner abuts on the stops (20a) and (20b) flanges.
  • the prohibited lever any possibility for the cable to leave the groove (9) and as soon as the lever, it pivots again according to (R1), which causes the blocking on the fall arrestor cable.
  • the fall arrester includes a system of stops (20a, 20b) for the carabiner, system of stops which limit the pivoting of the lever in a position intermediate when the user passes this lever from the position of closing to the open position. It is then impossible for the user to exceed this intermediate position, and it is then impossible for the cable leaving the retaining groove, the cam (10) still being engaged in the cable retention area, as shown in Figure 13.
  • the clearance (1 Sa, 15b) allows the displacement of the carabiner (5) and therefore the lever (16) from the closed position to the intermediate position according to which the carabiner rests on the two stops (20a, 20b).
  • the fall arrester is advantageously metallic such as, for example, stainless steel.
  • the length (L2) of the lever is such that its end (22) projects beyond the upper ramps (18a, 18b).
  • FIG. 14 represents an alternative embodiment according to which the lever (16) does not rub on the wall (11a) of the first flange (12a).
  • a washer (210) disposed around the axis (21) between said lever (16) and the wall (11a), as it appears in the drawing in the sectioned area.
  • FIGS 15 and 16 are views illustrating a variant embodiment according to which the locking ramp (25) comprises two locking projections, namely, an upper projection (250) and a projection lower (251). Furthermore, according to this variant, the lower ramp (17a, 17b) extends over a greater length than previously for extend beyond and above the horizontal plane (H). Note also that an additional safety device is provided, consisting of a pawl pivoting (40) urged to close by a spring. Said pawl (50) being intended to condemn the untimely release of the support belay (6) through the passage (40).
  • means are provided for complementary locks (51, 52, 53) for the lever (16) so that in a completely inverted position of the device as illustrated in FIG. 17 there is locking of said lever (16) in its extreme open position.
  • a sliding rod (51) intended to slide. freely in a hole (52) made in the lever, while in position locking, the end of the rod, by its own weight, engages in a corresponding hole (53) made in the axis (21).

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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 (7)

  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, dadurch gekennzeichnet, daß das freie Ende des verschwenkbaren Hebels (16) ein Loch (23) aufweist, das zur Aufnahme eines Karabinerhakens (5) dient, wobei ein Anschlagsystem (20a, 20b) 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.
  2. Absturzsicherung nach Anspruch 1, dadurch gekennzeichnet, daß die Halterille (9) durch die Wand (11a) eines Hauptflansches (12a) gebildet wird und einen Nebenflansch (12b) umfaßt, der durch eine Wand (11b) gebildet wird, wobei der Hebel (16) zwischen den beiden Flanschen (12a, 12b) verschwenkbar montiert ist.
  3. Absturzsicherung nach Anspruch 2, dadurch gekennzeichnet, daß sie einen in Längsrichtung und parallel zur Achse (YY') der Rille (9) verlaufenden Durchlaß (40) umfaßt, wobei der Durchlaß seitlich einerseits vom ersten Rand (13a) des Hauptflanschs (12a) und andererseits vom ersten Rand (13b) des zweiten Flanschs begrenzt ist.
  4. Absturzsicherung nach Anspruch 3, dadurch gekennzeichnet, daß die zweiten 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.
  5. Absturzsicherung nach Anspruch 4, 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, wobei die untere Rampe 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 ist, wobei ferner 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.
  6. Absturzsicherung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Nocken (10) aus einer Blockierrampe (25) besteht, die durch eine Entriegelungsrampe (26) verlängert ist.
  7. 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 true EP0752255B1 (de) 2000-11-29
EP0752255B2 EP0752255B2 (de) 2004-06-30

Family

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
USD746125S1 (en) 2013-05-10 2015-12-29 D B Industries, Llc Fixed side plate of a rope grab
USD764258S1 (en) 2013-05-10 2016-08-23 D B Industries, Llc Housing of a rope grab
USD739212S1 (en) 2013-05-10 2015-09-22 D B Industries, Llc Housing of a rope grab
AU2014302008C1 (en) * 2013-06-28 2018-05-24 3M Innovative Properties Company Fall arrester
CN107635624B (zh) * 2015-03-23 2021-07-09 凯比特安全设备集团（北欧）有限公司 绳索滑行器
EP3133706A1 (de) 2015-08-19 2017-02-22 Zurecon AG Verfahren zur installation von stromschienen
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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

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Also Published As

Publication number Publication date
DE69611064T2 (de) 2001-07-19
ES2153947T3 (es) 2001-03-16
US5860493A (en) 1999-01-19
CA2198027A1 (fr) 1998-08-19
ATE197769T1 (de) 2000-12-15
ES2153947T5 (es) 2004-12-01
FR2736273A1 (fr) 1997-01-10
DE69611064D1 (de) 2001-01-04
EP0752255B2 (de) 2004-06-30
EP0752255A1 (de) 1997-01-08
DE69611064T3 (de) 2006-05-11

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