EP0859648B1 - Dispositif d'arret automatique de chute pour des personnels travaillant en hauteur - Google Patents
Dispositif d'arret automatique de chute pour des personnels travaillant en hauteur Download PDFInfo
- Publication number
- EP0859648B1 EP0859648B1 EP97933737A EP97933737A EP0859648B1 EP 0859648 B1 EP0859648 B1 EP 0859648B1 EP 97933737 A EP97933737 A EP 97933737A EP 97933737 A EP97933737 A EP 97933737A EP 0859648 B1 EP0859648 B1 EP 0859648B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam
- clamping
- roller
- lever
- sense
- 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
Links
Images
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
Definitions
- the present invention relates to a device personal fall protection and more in particular, a device designed to stop automatically the fall of a person working in height.
- the patent of the United States of America No. 4923037 describes an anti-fall arrest device at automatic operation, mobile along a support vertical.
- This device includes a mounted gear to rotate in its housing, which is articulated to the interior of an exterior dwelling and is constrained elastically in the direction applying the gear against the support passing through a vertical channel provided at the front of the exterior housing.
- the gear wheel is rotated by its friction thereon. If the rate of descent of the device along the support reaches a predetermined value, the speed of corresponding rotation of the toothed wheel triggers a centrifugal clutch mechanism that stops rotation of the gear wheel.
- the friction between the support and the immobilized gear wheel then causes the pivoting of the housing thereof in the direction which ensures the tightening of the support between the toothed wheel and the external housing and blocking the device on the support.
- the system centrifugal clutch which acts as a trigger automatic clamping, is an expensive and fragile, sensitive to dust.
- This device due to the lightness of the roller clamp which can go up along the ramp guidance due to jolts or vibrations, is poorly controlled operating sensitivity and is susceptible to erratic operations.
- the object of the present invention is to realize an automatic fall arrest device avoiding the above mentioned disadvantages of known devices and having the advantages of simplicity, robustness and improved efficiency.
- the stop device automatic fall which slides without operation additional on a belay support fixed at a point located above said device to which is connected the user or a load, is of the type comprising a clamping device for the belay support and a member detector of an acceleration or speed threshold of scrolling of the belay support relative to the device.
- the organ detector consisting of a roller or a rotating member equivalent, and the clamping member being distinct
- the detector member is mounted on the clamping member and drives it in the direction of tightening under the effect of a resistant torque of determined level opposing the rotation of the roller and partially joining the roller and the clamping member, said resistant torque being generated by a means fixed on the clamping member and acting from a determined speed threshold or of acceleration of the belay support in the device.
- the means generating the resistant torque consists of a friction shoe, applied against the roller under the effect of a spring resting on the clamping member and generating a resistant torque increasing with the speed of the support in the device up to a threshold higher than a resistant torque cam antagonist.
- the clamping member can be constituted by a self-locking pivoting cam with the support belay device, on which the detector roller is located so as to be in cooperative contact with the support for a determined position of the cam in the absence a tightening stress applied thereto, and so as to leave this contact as soon as the cam starts its clamping action.
- the center of gravity of the cam is placed with respect to the axis of rotation thereof so as to request this cam, in association with its mass, in the direction of its loosening in the absence of a given acceleration of the device down, and at request the said cam in the opposite direction in the presence of such an acceleration, starting from a threshold of this, to initiate the clamping action.
- the device comprises a load actuating lever cooperating so unidirectional with the cam by a stop, so this cam cannot be actuated by this lever only in the direction causing the tightening.
- a connecting spring mounted on the hinge pin common to lever and cam has two ends one of which applies at a point in the housing of device and the other applies to the cam so the stress in rotation in the direction of loosening of so as to apply it constantly in contact with the lever in the absence of a positive action to immobilize this one in high position simultaneously with a phenomenon causing the cam to tighten.
- the mass of the cam, associated with positioning of its center of gravity is calculated from so as to neutralize the action of the spring to operate a tightening movement under acceleration determined, down, of the entire device.
- the actuation lever is configured and positioned so that it can activate or support the cam over its entire tightening stroke up to complete blocking of the rope.
- the device automatic shutdown generally designated as 1 is intended for tightening a vertical belay rope 2 which crosses.
- Rope 2 is attached at its end upper, and it is provided with a ballast (not shown) at its lower end.
- the device 1 comprises a housing consisting of two side plates 3 (only one of which is visible in the drawing) connected by spacers 4, of a front wall 5 and a rear wall 6.
- cam clamp 7 mounted to pivot around an axis horizontal 8 carried by the flanges 3.
- cam 7 Towards its part front, cam 7 has an arcuate clamping surface 9 and it has, at its upper front part, a detection roller 10 mounted idly on a transverse axis 11 carried by the cam 7.
- a bent lever 15, articulated in its part intermediate around axis 8, has an arm which protrudes through a slot 16 in the rear wall 6, while the end 17 of its other arm is used, in the high position of the lever 15 in abutment against the wall 6 (as shown in Figure 1), stop for the cam 7 in the release position.
- roller 10 on the cam 7 is provided so that in this cam stop position against the lever 15, the roller 10 comes into contact with the rope 2.
- Cam 7 is such that its center of gravity is placed relative to the axis of rotation 8 of so as to urge this cam in the direction of its loosening in the absence of a given acceleration of the device down, and to solicit this cam in the opposite direction by inertia in the presence of such a acceleration from a determined threshold thereof while neutralizing the action of the spring 14.
- the arm of the lever 15 which crosses the slot 16 has at its end an opening 18 for hooking the carabiner (not shown) to a lanyard associated with a worker.
- lever 15 does not control the displacement of the cam 7, by stop, only in the direction of Tightening. This avoids any untimely action by loosening by an awkward or untimely maneuver of this lever.
- Cam 7, as indicated above, is in its loose position, pressing against the abutment part 17 of the lever 15, itself in abutment against the wall 6, under the combined effect of the mass of the cam and the spring 14.
- the device 1 then slides freely along the safety rope 2, towards the up or down, depending on the displacement of the user, by rotating the roller 10.
- a lever locking device 15 in position blocking constituted for example by a ratchet 19 articulated in 20 on the case and engaging the face rear of lever 15, keeps cam 7 in its rope locking position 2, doing so parking brake office.
- the device housing includes a means opening (not shown in the drawing), such as the closed position of the case is locked by two separate organs, requiring the intervention of two successive voluntary operations to open this housing.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
Description
- par accélération d'un organe détecteur situé sur l'organe de serrage et qui en amorce le mouvement de serrage,
- par la réalisation de l'organe de serrage sous la forme d'une came de serrage montée de façon que la position de son centre de gravité par rapport à son axe de rotation provoque un effet inertiel, en cas de sollicitation brusque du dispositif vers le bas, qui entraíne le mouvement serreur de la came,
- par l'action d'un levier sous l'effet de la charge.
Claims (8)
- Dispositif d'arrêt automatique de chute, coulissant sans opération supplémentaire sur un support d'assurage (2) fixé à un point situé au-dessus du dit dispositif auquel est relié l'utilisateur ou une charge, ce dispositif comportant un organe de serrage (7) du support d'assurage (2) et un organe détecteur (10) d'un seuil d'accélération ou de vitesse de défilement du support d'assurage (2) par rapport au dispositif, caractérisé en ce que l'organe détecteur (10), constitué par un galet ou un organe rotatif équivalent, et l'organe de serrage (7) étant distincts, l'organe détecteur est monté sur l'organe de serrage (7) et entraíne celui-ci dans le sens du serrage sous l'effet d'un couple résistant de niveau déterminé s'opposant à la rotation du galet (10) et solidarisant partiellement le galet (10) et l'organe de serrage (7), ledit couple résistant étant engendré par un moyen (12,13) fixé sur l'organe de serrage (7) et agissant à partir d'un seuil déterminé de vitesse ou d'accélération du support d'assurage (2) dans le dispositif.
- Dispositif selon la revendication 1, caractérisé en ce que le dit moyen engendrant le couple résistant est constitué par un frotteur (12), appliqué contre le galet (10) sous l'effet d'un ressort (13) s'appuyant sur l'organe de serrage (7) et engendrant un couple résistant croissant avec la vitesse du support d'assurage (2) dans le dispositif jusqu'à un seuil supérieur à un couple résistant antagoniste de l'organe de serrage (7).
- Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que le dit organe de serrage est constitué par une came pivotante (7) à effet d'autoserrage avec le support d'assurage (2), sur laquelle le galet détecteur (10) est situé de façon à être en contact de coopération avec le support (2) pour une position déterminée de la came (7) en l'absence d'une sollicitation de serrage appliquée à celle-ci, et de façon à quitter ce contact dès que la came (7) amorce son action de serrage.
- Dispositif selon la revendication 3, caractérisé en ce que la course de la came (7) dans le sens du desserrage est limitée par une butée (17) qui détermine une position du galet de détection (10) permettant à celui-ci d'être entraíné par le mouvement relatif du support d'assurage (2), un ressort (14) prenant appui sur le boítier du dispositif et s'appliquant sur cette came (7) pour la solliciter dans le sens du desserrage jusqu'à ce qu'elle atteigne sa position de butée.
- Dispositif selon la revendication 4, caractérisé en ce que le centre de gravité de la came (7) est placé par rapport à l'axe de rotation (8) de celle-ci de façon à solliciter cette came (7), en association avec sa masse, dans le sens de son desserrage en l'absence d'une accélération donnée du dispositif vers le bas, et à solliciter la dite came (7) dans le sens inverse en présence d'une telle accélération, à partir d'un seuil de celle-ci, dans une mesure suffisante pour neutraliser l'action du ressort (14) qui s'y applique, pour engager l'action d'autoserrage.
- Dispositif selon l'une quelconque des revendications 3 à 5, caractérisé en ce qu'il comporte un levier (15) d'actionnement par la charge, qui coopère de façon unidirectionnelle avec la came (7) par une butée (17) de sorte que la came (7) ne puisse être actionnée par ce levier (15) que dans le sens provoquant le serrage.
- Dispositif selon la revendication 6, caractérisé en ce que la butée de course de la came (7) dans le sens du desserrage est assurée par l'intermédiaire du levier d'actionnement (15) au moyen d'une butée de celui-ci sur le boítier du dispositif, de sorte que, en association avec le ressort (14) appliqué à la came (7), on obtienne un contact continu du levier (15) et de la came (7) en l'absence d'une action sur le levier (15) empêchant celui-ci de suivre la came (7) dans un mouvement de serrage.
- Dispositif selon l'une quelconque des revendications 3 à 7, caractérisé en ce qu'il comporte un organe (19) verrouillant, en cas de besoin la position de serrage de la came (7).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9608841A FR2751233B1 (fr) | 1996-07-16 | 1996-07-16 | Dispositif d'arret automatique de chute pour des personnels travaillant en hauteur |
FR9608841 | 1996-07-16 | ||
PCT/FR1997/001305 WO1998002210A1 (fr) | 1996-07-16 | 1997-07-15 | Dispositif d'arrêt automatique de chute pour des personnels travaillant en hauteur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0859648A1 EP0859648A1 (fr) | 1998-08-26 |
EP0859648B1 true EP0859648B1 (fr) | 2003-06-25 |
Family
ID=9494070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97933737A Expired - Lifetime EP0859648B1 (fr) | 1996-07-16 | 1997-07-15 | Dispositif d'arret automatique de chute pour des personnels travaillant en hauteur |
Country Status (13)
Country | Link |
---|---|
US (1) | US6056086A (fr) |
EP (1) | EP0859648B1 (fr) |
JP (1) | JP3262279B2 (fr) |
CN (1) | CN1100576C (fr) |
AU (1) | AU729685B2 (fr) |
BR (1) | BR9702343A (fr) |
CA (1) | CA2231722C (fr) |
CZ (1) | CZ292340B6 (fr) |
DE (1) | DE69723046T2 (fr) |
ES (1) | ES2202628T3 (fr) |
FR (1) | FR2751233B1 (fr) |
PL (1) | PL184120B1 (fr) |
WO (1) | WO1998002210A1 (fr) |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2842113B1 (fr) | 2002-07-12 | 2004-09-24 | Zedel | Dispositif antichute suiveur pour corde fixe |
FR2860982B1 (fr) * | 2003-10-20 | 2006-01-20 | Zedel | Dispositif antichute a galet bloqueur |
FR2889453B1 (fr) * | 2005-08-04 | 2007-11-30 | Emax Sarl | Dispositif de securite de type assureur/descendeur |
GB2441140B (en) * | 2006-08-21 | 2008-12-31 | Hugh Irving Banner | Rope grab |
DE202007019498U1 (de) * | 2006-10-27 | 2013-01-11 | Faszinatour Touristik - Training - Event Gmbh | Sicherungseinrichtung |
BRPI0822197A2 (pt) * | 2008-01-22 | 2015-06-23 | Cti Systems S A | Aparelho de segurnaça antiqueda com mecanismo de acionamento de cabo |
CN101559267A (zh) * | 2008-04-18 | 2009-10-21 | 陈锦鹏 | 一种防坠落设备及*** |
DE102008033431B4 (de) * | 2008-07-16 | 2010-03-04 | Faszinatour Touristik - Training - Event Gmbh | Anschlagelement für eine Sicherungseinrichtung |
DE202008010819U1 (de) | 2008-08-05 | 2008-10-16 | Skylotec Gmbh | Auffanggerät mit geschwindigkeitsabhängiger Kupplung |
FR2938771B1 (fr) * | 2008-11-27 | 2010-12-31 | Zedel | Dispositif bloqueur a came pour l'assurage sur corde fixe |
DE202009014714U1 (de) | 2009-10-30 | 2010-01-07 | Skylotec Gmbh | Auffanggerät mit geschwindigkeitsabhängiger Kupplung |
GB201019462D0 (en) * | 2010-11-18 | 2010-12-29 | Latchways Plc | Rescue descender system |
FR2970183B1 (fr) | 2011-01-11 | 2014-11-21 | Tractel Sas | Dispositif d'arret automatique de chute pour travailleur en hauteur. |
JP5766535B2 (ja) * | 2011-07-27 | 2015-08-19 | エス・デー・ケイ株式会社 | 墜落防止装置 |
DK2753771T3 (en) * | 2011-09-05 | 2018-10-08 | Ancsafe Ab | TEMPORARY FALL PROTECTION |
WO2013104139A1 (fr) * | 2012-01-13 | 2013-07-18 | He Shaodun | Dispositif anti-inversion de câble pour système de descente à suspension |
DE102012207223B3 (de) * | 2012-04-30 | 2013-09-26 | Bornack Gmbh & Co. Kg | Sicherungsvorrichtung |
US9168402B2 (en) * | 2012-07-18 | 2015-10-27 | D B Industries, Llc | Rope grab |
US9132297B2 (en) * | 2012-07-18 | 2015-09-15 | D B Industries, Llc | Rope grab |
FR3000900B1 (fr) * | 2013-01-15 | 2015-02-27 | Zedel | Appareil de securite antichute sur corde avec fonction bloqueur |
FR3000899B1 (fr) | 2013-01-15 | 2015-06-26 | Zedel | Appareil de securite antichute et blocage sur corde |
US9623269B2 (en) * | 2013-03-14 | 2017-04-18 | Black Diamond Equipment, Ltd. | Systems for assisted braking belay with a cam-clutch mechanism |
GB2514155A (en) * | 2013-05-15 | 2014-11-19 | Spanset Inter Ag | Fall arrest traveller |
WO2014205479A1 (fr) * | 2013-06-28 | 2014-12-31 | Capital Safety Group (Australia) Pty Limited | Dispositif d'arrêt de chute |
US10632332B2 (en) * | 2015-01-28 | 2020-04-28 | Bashlin Industries, Inc. | Fall restriction device |
CA2928081C (fr) * | 2015-04-24 | 2018-09-18 | Buckingham Manufacturing Company, Inc. | Mecanisme de came destine a un dispositif de restriction de chute lors de l'escalade de poteau |
US9874034B2 (en) * | 2016-03-10 | 2018-01-23 | Meyer Ostrobrod | Anti-panic cable grab |
US10946248B1 (en) | 2017-02-28 | 2021-03-16 | Buckingham Manufacturing Company, Inc. | Adjustable body belt having D-rings/attachments |
CN106841951B (zh) * | 2017-03-09 | 2023-09-29 | 中国南方电网有限责任公司超高压输电公司梧州局 | 特高压直流输电线路绝缘子检测机器人高空防坠落装置 |
KR101897154B1 (ko) * | 2017-05-26 | 2018-09-12 | 주식회사 코닥트 | 로프형 승강장치 |
GB201712177D0 (en) * | 2017-07-28 | 2017-09-13 | Heightec Group Ltd | Fall arrest device |
DE102018102325B4 (de) * | 2018-02-01 | 2021-01-21 | Bornack Gmbh & Co. Kg | Sicherungsvorrichtung |
CN108394784B (zh) * | 2018-04-11 | 2023-07-25 | 波士顿电梯(湖州)有限公司 | 客梯防坠落轮式安全装置 |
CN110538396A (zh) * | 2019-09-20 | 2019-12-06 | 中际联合(北京)科技股份有限公司 | 一种防坠器 |
CN212282600U (zh) * | 2019-09-20 | 2021-01-05 | 中际联合(北京)科技股份有限公司 | 防坠落锁紧组件、防坠落装置和防坠落*** |
CN111410153B (zh) * | 2020-03-27 | 2021-10-22 | 广东博智林机器人有限公司 | 防坠保护装置 |
CN111853107B (zh) * | 2020-07-09 | 2024-04-02 | 上海市隧道工程轨道交通设计研究院 | 一种竖直方向的自动锁定装置及其工作方法 |
CN111840851A (zh) * | 2020-08-18 | 2020-10-30 | 中际联合(北京)科技股份有限公司 | 绳索锁止装置 |
US12042678B2 (en) * | 2020-10-22 | 2024-07-23 | Bashlin Industries, Inc. | Adjustable lineman safety belt |
CN112757192B (zh) * | 2021-02-01 | 2022-08-09 | 长春合心机械制造有限公司 | 快换夹具自锁紧定位机构 |
CN113509656A (zh) * | 2021-06-15 | 2021-10-19 | 杭州制氧机集团股份有限公司 | 一种便捷式生命保护绳 |
US11781610B2 (en) | 2021-06-18 | 2023-10-10 | Cmc Rescue, Inc. | Systems for line device |
CN113847389B (zh) * | 2021-09-29 | 2023-04-18 | 广东电网有限责任公司 | 一种用于杆塔作业的重物防坠挂钩 |
NO20211209A1 (no) * | 2021-10-08 | 2022-11-28 | Lonevag Beslagfabrikk As | Fallsikring for skråtak |
CN114908854B (zh) * | 2022-06-10 | 2024-06-21 | 安徽碧之润生态环境科技有限公司 | 一种市政工程排水检测井防坠装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4657110A (en) * | 1984-12-10 | 1987-04-14 | D B Industries, Inc. | Inertia rope grab |
SU1301417A1 (ru) * | 1985-11-25 | 1987-04-07 | Производственное Объединение По Наладке,Совершенствованию Технологии И Эксплуатации Электростанций И Сетей "Союзтехэнерго" | Устройство дл страховки |
GB8627320D0 (en) * | 1986-11-14 | 1986-12-17 | Latchways Ltd | Lockable load-transfer |
US4923037A (en) * | 1989-06-29 | 1990-05-08 | John Stephenson | Fall arrest device |
FR2688815B1 (fr) * | 1992-03-18 | 1994-06-10 | Komet | Perfectionnements aux dispositifs de securite pour ouvriers travaillant dans des endroits eleves. |
FR2720283B1 (fr) * | 1994-04-21 | 1996-08-23 | Froment Sa | Appareil anti-chute verrouillage automatiquement sur une corde de sécurité. |
-
1996
- 1996-07-16 FR FR9608841A patent/FR2751233B1/fr not_active Expired - Fee Related
-
1997
- 1997-07-15 AU AU36983/97A patent/AU729685B2/en not_active Ceased
- 1997-07-15 ES ES97933737T patent/ES2202628T3/es not_active Expired - Lifetime
- 1997-07-15 PL PL97325518A patent/PL184120B1/pl not_active IP Right Cessation
- 1997-07-15 WO PCT/FR1997/001305 patent/WO1998002210A1/fr active IP Right Grant
- 1997-07-15 JP JP50568998A patent/JP3262279B2/ja not_active Expired - Fee Related
- 1997-07-15 BR BR9702343-4A patent/BR9702343A/pt not_active IP Right Cessation
- 1997-07-15 CN CN97190905A patent/CN1100576C/zh not_active Expired - Fee Related
- 1997-07-15 CA CA002231722A patent/CA2231722C/fr not_active Expired - Fee Related
- 1997-07-15 US US09/043,176 patent/US6056086A/en not_active Expired - Lifetime
- 1997-07-15 EP EP97933737A patent/EP0859648B1/fr not_active Expired - Lifetime
- 1997-07-15 CZ CZ1998798A patent/CZ292340B6/cs not_active IP Right Cessation
- 1997-07-15 DE DE69723046T patent/DE69723046T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU3698397A (en) | 1998-02-09 |
DE69723046D1 (de) | 2003-07-31 |
PL325518A1 (en) | 1998-08-03 |
ES2202628T3 (es) | 2004-04-01 |
WO1998002210A1 (fr) | 1998-01-22 |
JPH11512958A (ja) | 1999-11-09 |
JP3262279B2 (ja) | 2002-03-04 |
CA2231722C (fr) | 2005-03-22 |
DE69723046T2 (de) | 2004-04-01 |
BR9702343A (pt) | 1999-12-28 |
CN1197401A (zh) | 1998-10-28 |
AU729685B2 (en) | 2001-02-08 |
EP0859648A1 (fr) | 1998-08-26 |
CZ79898A3 (cs) | 1998-06-17 |
CA2231722A1 (fr) | 1998-01-22 |
PL184120B1 (pl) | 2002-09-30 |
CZ292340B6 (cs) | 2003-09-17 |
US6056086A (en) | 2000-05-02 |
FR2751233A1 (fr) | 1998-01-23 |
CN1100576C (zh) | 2003-02-05 |
FR2751233B1 (fr) | 1998-10-09 |
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