EP0028041A1 - Dispositif de sécurité pour empêcher une chute - Google Patents

Dispositif de sécurité pour empêcher une chute Download PDF

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Publication number
EP0028041A1
EP0028041A1 EP80200940A EP80200940A EP0028041A1 EP 0028041 A1 EP0028041 A1 EP 0028041A1 EP 80200940 A EP80200940 A EP 80200940A EP 80200940 A EP80200940 A EP 80200940A EP 0028041 A1 EP0028041 A1 EP 0028041A1
Authority
EP
European Patent Office
Prior art keywords
rope
pulley
hollow rod
counterweight
safety device
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Withdrawn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
EP80200940A
Other languages
German (de)
English (en)
Inventor
Enzo Monferrato
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.)
A and A MONFERRATO FOREVER SNC
Original Assignee
A and A MONFERRATO FOREVER SNC
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 A and A MONFERRATO FOREVER SNC filed Critical A and A MONFERRATO FOREVER SNC
Publication of EP0028041A1 publication Critical patent/EP0028041A1/fr
Withdrawn legal-status Critical Current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

  • This invention relates to a fall arrest safety device of the so-called "first man” type, particularly for personnel operating on power line pylons and the like, but also for application in other situations where safety against falling is required.
  • a fall arrest safety device which comprises an attachment hook firmly connected to a hollow rod, a pulley rotatably mounted near an upper end of the hollow rod, a rope having one end secured to a counterweight slidably mounted within said hollow rod, said rope extending from an upper end of said hollow rod and passing around said pulley and through locking means anchored to said hollow rod, the other end of said rope being provided with means for attachment to a safety-belt of the user, said locking means being arranged to permit free passage of the rope in both directions when said rope is running slowly and to lock said rope when it is running in the direction of lifting of the counterweight at a speed exceeding a prede termined value.
  • a fall arrest safety device comprises an attachment hook 10 made preferably of a steel tube formed in U-shape and reinforced by an iron strap 12 welded along the out side of the curved portion.
  • One end of the hook 10 terminates in a tubular member 14 which in turn is rigidly connected by means of welded brackets 16 to hollow rod 18 which extends for a length of a few metres from the end of the hook 10.
  • a cylindrical counterweight 20 is slidably mounted within the hollow rod 18 and a rope 22, preferably made of three twisted strands of nylon, has one end firmly secured to the counterweight 20 and extends upwardly therefrom through the hollow rod 18, passed around a pulley 24 mounted for free rotation in the tubular member 14 and comes out of the lower end of this tubular member 14 after passing through locking means which will be described in greater detail hereinafter, to terminate with a free end 26 provided with a spring catch 28 for attachment to a safety-belt (not shown) of a user.
  • the locking means is located in the tubular member 14 between a pair of plugs 30, 32.
  • the first plug 30 supports a guide shoe 34 for retaining the rope on the pulley and preventing it from derailing whereas the second plug 32 is provided with a bore permitting the rope to pass therethrough.
  • the locking means then comprises a sleeve 36 located above the plug 32 and having a frustoconical inner seat for receiving a floating piston 38 the end of which has a frustoconical shape complementary to that of the inner seat in the sleeve 36.
  • a helical spring 40 normally pushes the piston 38 upwardly away from the sleeve 36.
  • the piston 38 is provided with a central bore permitting the rope 22 to pass therethrough.
  • the rope 22 is guided toward the piston 38 by a fixed guide member 42.
  • the conical portion of the piston 38 has three radial apertures 44 (only one of which is seen in the drawings) each receiving a steel ball 46.
  • the upper end of the floating piston 38 supports a slidable strut 48 having an inclined surface 50 at its upper end.
  • a rotatable plate 52 having at least one projecting pin 54 is mounted for rotation in the pulley 24 so that during rotation of the plate 52 the pin 54 will engage the inclined surface 50 on the strut 48 to move the piston 38 downwardly against the action of the spring 40.
  • a centrifugally operated device for coupling the rotatable plate 52 to the pulley 24 when the latter rotates at a speed exceeding a predetermined value.
  • Various devices capable of achieving this are known, but a preferred embodiment will now de described with reference to Fig. 3.
  • a crescent-shaped weight 56 is accommodated in a central cylindrical recess in the pulley 24 and mounted for pivotal movement around a pivot 58 connecting the crescent-shaped weight 56 to the body of the pulley.
  • a calibrated helical spring 60 normally holds the crescent-shaped weight 56 in a position close to the axis of the pulley.
  • the rotatable plate 52 has a projection 62 extending inwardly from and over part the periphery of the plate 52.
  • the safety device is used and operates as follows: The user attaches the spring catch 28 to this safety-belt, grips the rod 18 near its lower end and lifts the entire device for attaching it by the hook 10 to a point as high as possible on the pylon, i.e. as far he can reach from his starting positions. During this operation the rope 22 will be withdrawn from the device by passing around the pulley 24 and lifting the counterweight 20. This movement of the rope will not be obstructed by the device as the speed of rotation of the pulley 24 is lower than that required for coupling the rotatable plate 52 to the pulley.
  • the user will climb up the latter without further bothering about the safety device while the counterweight 20 will gradually recover the rope 22 as the user approaches the hook 10.
  • the user will repeat the operation of attaching the hook 10 to a position above him a distance corresponding at least to the length of the rod. 18 and by repeating this operation a number of times he will reach the desired position up on the pylon.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Lowering Means (AREA)
EP80200940A 1979-10-26 1980-10-04 Dispositif de sécurité pour empêcher une chute Withdrawn EP0028041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6908879 1979-10-26
IT69088/79A IT1119475B (it) 1979-10-26 1979-10-26 Dispositivo di sicurezza anticaduta particolarmente per operatori in scalata su tralicci di elettrodotti e simili

Publications (1)

Publication Number Publication Date
EP0028041A1 true EP0028041A1 (fr) 1981-05-06

Family

ID=11311324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200940A Withdrawn EP0028041A1 (fr) 1979-10-26 1980-10-04 Dispositif de sécurité pour empêcher une chute

Country Status (2)

Country Link
EP (1) EP0028041A1 (fr)
IT (1) IT1119475B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824939A2 (fr) * 1996-08-23 1998-02-25 ABBPATENT GmbH Système de protection des personnes durant l'ascension des mâts treillis
WO1999003538A1 (fr) * 1997-07-17 1999-01-28 Octavio Bessa Lima Junior Dispositif de blocage automatique pour empecher la chute libre et l'acceleration de corps suspendus
CN101108270A (zh) * 2006-07-19 2008-01-23 中国科学院沈阳自动化研究所 电力高空作业安全挂杆
WO2010102341A1 (fr) * 2009-03-12 2010-09-16 Safety Compliance Design & Services Pty Ltd Système de sécurité en hauteur et procédé d'installation
CN102247668A (zh) * 2011-06-29 2011-11-23 浙江德清一线安全带有限公司 一种速差自控器的鼓轮
CN104606800A (zh) * 2013-11-01 2015-05-13 陆震海 火灾逃生器
WO2015185725A1 (fr) * 2014-06-05 2015-12-10 BÖTTCHER, Andrea Dispositif de sécurisation d'une personne escaladant un objet comprenant au moins un croisillon de sécurité, système composé d'un tel dispositif avec croisillon de sécurité et procédé de fixation d'un tel dispositif
CN110254386A (zh) * 2019-06-28 2019-09-20 胡泽兵 一种借助重力安全降落防受伤的双层巴士逃生急救绳
IT201800004272A1 (it) * 2018-04-06 2019-10-06 Sistema e metodo anti-caduta
CN112870580A (zh) * 2021-02-19 2021-06-01 贵州电网有限责任公司 一种伸缩式双钩安全带
CN115715855A (zh) * 2022-11-18 2023-02-28 史一凡 一种基于电磁技术的建筑施工防坠安全绳

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE239573C (fr) *
US2538904A (en) * 1948-10-19 1951-01-23 Patrick J Hurley Tower ladder safety device
US2886227A (en) * 1955-07-25 1959-05-12 Rose Mfg Company Ladder climber
GB1061903A (en) * 1962-10-10 1967-03-15 Irving Air Chute Gb Ltd Locking devices in particular for vehicle safety belts
US3418021A (en) * 1967-04-19 1968-12-24 Robbins Seat Belt Co Belt retracting device with collet locking means
US3442529A (en) * 1967-04-24 1969-05-06 Robbins Seat Belt Co Inertia retracting device with weight actuated take-up
DE7337770U (de) * 1974-01-31 Raduege W Sicherheitsvorrichtung für Leitern
DE7919515U1 (de) * 1979-10-04 Mittelmann & Co Armaturenwerk, 5603 Wuelfrath Sicherungshaken für absturzgefährdete Personen oder Sachen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE239573C (fr) *
DE7337770U (de) * 1974-01-31 Raduege W Sicherheitsvorrichtung für Leitern
DE7919515U1 (de) * 1979-10-04 Mittelmann & Co Armaturenwerk, 5603 Wuelfrath Sicherungshaken für absturzgefährdete Personen oder Sachen
US2538904A (en) * 1948-10-19 1951-01-23 Patrick J Hurley Tower ladder safety device
US2886227A (en) * 1955-07-25 1959-05-12 Rose Mfg Company Ladder climber
GB1061903A (en) * 1962-10-10 1967-03-15 Irving Air Chute Gb Ltd Locking devices in particular for vehicle safety belts
US3418021A (en) * 1967-04-19 1968-12-24 Robbins Seat Belt Co Belt retracting device with collet locking means
US3442529A (en) * 1967-04-24 1969-05-06 Robbins Seat Belt Co Inertia retracting device with weight actuated take-up

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824939A3 (fr) * 1996-08-23 1999-07-14 ABBPATENT GmbH Système de protection des personnes durant l'ascension des mâts treillis
EP0824939A2 (fr) * 1996-08-23 1998-02-25 ABBPATENT GmbH Système de protection des personnes durant l'ascension des mâts treillis
WO1999003538A1 (fr) * 1997-07-17 1999-01-28 Octavio Bessa Lima Junior Dispositif de blocage automatique pour empecher la chute libre et l'acceleration de corps suspendus
CN101108270B (zh) * 2006-07-19 2010-10-27 中国科学院沈阳自动化研究所 电力高空作业安全挂杆
CN101108270A (zh) * 2006-07-19 2008-01-23 中国科学院沈阳自动化研究所 电力高空作业安全挂杆
AU2010223855B2 (en) * 2009-03-12 2013-06-27 Safety Compliance Design & Services Pty Ltd A height safety system and method of installation
WO2010102341A1 (fr) * 2009-03-12 2010-09-16 Safety Compliance Design & Services Pty Ltd Système de sécurité en hauteur et procédé d'installation
CN102247668A (zh) * 2011-06-29 2011-11-23 浙江德清一线安全带有限公司 一种速差自控器的鼓轮
CN102247668B (zh) * 2011-06-29 2013-01-02 浙江德清一线安全带有限公司 一种速差自控器的鼓轮
CN104606800A (zh) * 2013-11-01 2015-05-13 陆震海 火灾逃生器
WO2015185725A1 (fr) * 2014-06-05 2015-12-10 BÖTTCHER, Andrea Dispositif de sécurisation d'une personne escaladant un objet comprenant au moins un croisillon de sécurité, système composé d'un tel dispositif avec croisillon de sécurité et procédé de fixation d'un tel dispositif
DE102014107992B4 (de) 2014-06-05 2024-02-29 Andrea Böttcher Vorrichtung zur Sicherung einer an einem Objekt mit mindestens einer Sicherheitssteigsprosse kletternden Person, System aus einer solchen Vorrichtung mit einer Sicherheitssteigsprosse und Verfahren zur Befestigung einer solchen Vorrichtung
IT201800004272A1 (it) * 2018-04-06 2019-10-06 Sistema e metodo anti-caduta
CN110254386A (zh) * 2019-06-28 2019-09-20 胡泽兵 一种借助重力安全降落防受伤的双层巴士逃生急救绳
CN112870580A (zh) * 2021-02-19 2021-06-01 贵州电网有限责任公司 一种伸缩式双钩安全带
CN115715855A (zh) * 2022-11-18 2023-02-28 史一凡 一种基于电磁技术的建筑施工防坠安全绳
CN115715855B (zh) * 2022-11-18 2023-11-10 史一凡 一种基于电磁技术的建筑施工防坠安全绳

Also Published As

Publication number Publication date
IT7969088A0 (it) 1979-10-26
IT1119475B (it) 1986-03-10

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LU NL SE

17P Request for examination filed

Effective date: 19810717

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19821011

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MONFERRATO, ENZO