EP0727006B1 - Sicherheitsvorrichtung und gleiter dafür - Google Patents

Sicherheitsvorrichtung und gleiter dafür Download PDF

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Publication number
EP0727006B1
EP0727006B1 EP93917821A EP93917821A EP0727006B1 EP 0727006 B1 EP0727006 B1 EP 0727006B1 EP 93917821 A EP93917821 A EP 93917821A EP 93917821 A EP93917821 A EP 93917821A EP 0727006 B1 EP0727006 B1 EP 0727006B1
Authority
EP
European Patent Office
Prior art keywords
carriage
rail
rims
brackets
profile
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
EP93917821A
Other languages
English (en)
French (fr)
Other versions
EP0727006A1 (de
Inventor
Jukka Immonen
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.)
JITA-PIPE Oy
Original Assignee
JITA-PIPE Oy
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 JITA-PIPE Oy filed Critical JITA-PIPE Oy
Publication of EP0727006A1 publication Critical patent/EP0727006A1/de
Application granted granted Critical
Publication of EP0727006B1 publication Critical patent/EP0727006B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • E06C7/187—Guiding rail

Definitions

  • the invention relates to a safety device preventing a person from falling when climbing on a ladder.
  • the safety device stops in a rail fixed to the ladder and prevents from falling when the person is suspended in the safety device. More particularly, the invention relates to a safety device and a carriage of the kind defined in the independent claims.
  • a rail is used as safety device to which a carriage is fixed that moves in the rail and reacts upon dropping by stopping in the rail and thus preventing the safety device user from falling.
  • Safety carriages are known from, among others, the Finnish publication 61133 and application 842035. In these examples, the safety carriage hits the rail or an obstacle formed in the profile.
  • T-profiles and square profiles and corresponding C-profiles are used, the profile of which is open at a point allowing the safety carriage to be guided off the rail.
  • EP-A-0418405 discloses a safety device of the kind with which the present invention is concerned. When in the stopped position the carriage of this safety device transmits the forces to the rail flanges defining the rail opening through a pair of wheels having a common axis, so that a localised load is applied to the rail flanges.
  • This safety device accordingly has the disadvantage mentioned above.
  • US-A-3933220 discloses a safety device in which the stopping of the carriage is effected by pushing a pair of wedge elements into a slot in a tubular safety rail.
  • the tube forming the rail has to have a substantial wall thickness and thus a substantial weight.
  • the profile is either a C- or a square profile, in each profile there is a gap for the carriage.
  • the profile has rims bent to the profile inside.
  • the C- and square profiles have the tendency to spread out thus enlargening the gap in the profile front edge.
  • Fig. 1 shows a carriage 4 in rail profile 1.
  • the carriage moves up and down in the rail while belt loop 5 is being pulled off the rail.
  • the user suspends him/herself in the belt, one end of which is in belt loop 5.
  • carriage 4 is pulled from loop 5 on moving up or down in the ladder direction, the carriage does not stop in the collision brackets 2 arranged on the profile back wall.
  • Fig. 2 shows a rail profile 1, on the inside back wall of which curved brackets 2 are hammered by a tool at suitable intervals.
  • This profile type holes 13 are made between the brackets in the back wall for fastening the rail to the ladder.
  • the rail profile design tapers towards the front wall, where the profile is open. At the edges of the produced gap the profile has rims 3 bent to the profile inside. The inner walls of these bent rims 3 are marked by ref.no 12.
  • Figure 3 shows a cross-section of a situation as per figure 1, where carriage 4 is stopped in rail 1.
  • Carriage wheel 6, which can move in the carriage frame is stretched toward belt loop 5 by spring 14 around pin 7 in carriage 4, whereupon carriage wheel 6 has hit the front wall of the rail and, accordinly, carriage 4 has then moved against the rail back wall by the impact of spring 14. Since the carriage motion has been down, its lower collision edge 10 has then hit bracket 2 and stopped the carriage. Carriage 4 remains stopped as long as the frame is being pulled down. The carriage is released on pulling belt loop vertically off the rail with respect to the rail.
  • Figure 4 shows a carriage with an elongated hole 8 for the wheel pair axle and a pin 7 for fixing spring 14. At both carriage ends there are collision edges 10 which hit the brackets 2 upon collision. Further, at both ends of the carriage there is a pair of brackets 9 adjusted to the rail profile 1 so that suittable clearance is left between their inner surfaces 11 and the inner surfaces 12 of bent rims 3.
  • the rail 1 wall thickness and stiffness is so adjusted that in situations of stress of the rail, due to falling, the rail profile gap can expand, whereat bent rims 3 take support from the bracket pairs 9 of carriage 4 and prevent further extension of the profile gap. This support also results in an increased friction between the carriage and the rail in the locked situation.
  • the rail can be made of quite a thin plate or its walls to a rather thin profile.
  • the front edge as per fig. 2 has a strong tendency to spread out at the front edge gap, but also other square, circular or combination profiles tend to do the same.
  • bracket pairs 9 can be replaced also by wheel pairs if one wants to secure perfect rolling of carriage in the profile front edge. Then the inner flanks of the wheel pairs are adjusted to function with the bent rims 3 and front edges 6 in the same way as parts 9 and their inner surfaces 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Lowering Means (AREA)
  • Ladders (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Claims (9)

  1. Ein Wagen (4), der in einer Sicherheitschiene (1) fährt und stoppt, wenn er von seiner Fahrtrichtung abweicht und mit seiner Kollisionskante (10) mit Anschlägen (2) zusamnenstösst, die in die schiene auf eine seiner Hinterwände eingebaut sind, und der Wagen (4) hat Teile (9), um sich an die Vorderwand der Schiene (1) zu stützen, und diese Vorderwand schliesst ein Paar Ränder (3) ein, die nach innen gegen die Hinterwand gebogen sind und eine Lücke in die vorderwand formen, gekennzeichnet dadurch, dass die genannten Teile (9) überstehende Teile sind, geformt als ein Paar Konsolen in beiden Enden des Wagens (4), die in die Ränder 3 hineineinpassen, und dass die Innenflächen (11) in der Weise angepasst worden sind, dass sie die Rander (3) stützen, wenn sich diese Ränder beim Stoppen des wagens zu öffnen und auszubreiten streben.
  2. Ein Wagen gemäss Patentanspruch 1 gekennzeichnet dadurch, dass die Konsolen (9) gleitende Teile sind.
  3. Ein Verfahren gemäss Patentanspruch 1 gekennzeichnet dadurch, dass das Konsolenpaar zwei Räder oder entsprechende Rollen einschliesst.
  4. Ein Sicherheitsschienenprofil (1) mit Anschlägen (2), zum Stoppen die Fahrt des Wagens (4), und mit offener Vorderwand mit nach Innen gebogenen Rändern (3), die die Kanten der Lücke in der Vorderwand des Schienenprofils (1) formen, gekennzeichnet dadurch, dass die Ansatzflächen (11) des Wagens (4) angepasst sind, die gegenseitige Ausbreitungstendenz der Schienenränder (3) bei Beanspruchung des Schienenprofils zu empfangen.
  5. Eine Sicherheitsschiene gemäss Patentanspruch 4 gekennzeichnet dadurch, dass der gegenseitige Abstand der Innenflächen (12) der Ränder (3) so angepasst sind, dass sie mit den entsprechenden Flächen (11) des Wagens (4) einen Freiraum formen.
  6. Eine Sicherheitsvorrichtung bestehend aus einem Sicherheitsschienenprofil (1) und einen Wagen (4), der in dem Sicherheitsschienenprofil beweglich ist, der Schienenprofil mit Anschlägen (2) versehen, die in den Schienenprofil in eine seiner Hinterwände eingebaut sind um die Fahrt des Wagens zu stoppen, wenn der Wagen 4) von seiner Fahrtrichtung abweicht und mit seiner Kollisionskante (10) mit den genannten Anschlägen (2) zusammenstösst, und der Wagen (4) hat Teile um sich an eine Vorderwand der Schiene (1) zu stützen, welche Vorderwand ein Paar Ränder (3) einschliesst, die nach innen gegen die Hinterwand gebogen sind und eine Lücke in die Vorderwand formen, gekennzeichnet dadurch, dass die genannten Teile (9) überstehende Teile sind, geformt als ein Paar Konsolen in beiden Enden des Wagens, die in die Ränder 3 hineineinpassen, und dass die Innenflächen (11) in der Weise angepasst sind, dass sie die Ränder (3) stützen, wenn sich diese Ränder bei grosser Belastung, wenn der Wagen gestoppt wird, zu öffnen und auszubreiten streben.
  7. Eine Sicherheitsvorrichtung gemäss Patentanspruch 6 gekennzeichnet dadurch, dass die Konsolen gleitende Teile sind.
  8. Eine Sicherheitsvorrichtung gemäss Patentanspruch 6 gekennzeichnet dadurch, dass das Konsolenpaar zwei Räder oder entsprechende Rollen einschliesst.
  9. Eine Sicherheitsvorrichtung gemäss Patentanspruch 6 gekennzeichnet dadurch, dass der gegenseitige Abstand der Innenflächen (12) der Ränder (3) so angepasst sind, dass sie mit den entprechenden Flächen (11) der Konsolen (9) einen Freiraum formen.
EP93917821A 1992-08-19 1993-08-19 Sicherheitsvorrichtung und gleiter dafür Expired - Lifetime EP0727006B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI923709 1992-08-19
FI923709A FI116512B (fi) 1992-08-19 1992-08-19 Turvakiskoon lukittuva vaunu
PCT/FI1993/000327 WO1994004786A1 (en) 1992-08-19 1993-08-19 On the safety bar lockable carriage

Publications (2)

Publication Number Publication Date
EP0727006A1 EP0727006A1 (de) 1996-08-21
EP0727006B1 true EP0727006B1 (de) 1998-04-08

Family

ID=8535731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93917821A Expired - Lifetime EP0727006B1 (de) 1992-08-19 1993-08-19 Sicherheitsvorrichtung und gleiter dafür

Country Status (5)

Country Link
EP (1) EP0727006B1 (de)
AU (1) AU4711893A (de)
DE (1) DE69317913T2 (de)
FI (1) FI116512B (de)
WO (1) WO1994004786A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29610333U1 (de) * 1996-06-12 1996-08-22 Söll GmbH, 95028 Hof Steigvorrichtung
US5941340A (en) * 1997-03-31 1999-08-24 Dalloz Safety, Inc. Device for use in climbing or in transporting a mass
GB2328917B (en) * 1997-09-09 2002-03-06 Duncan Hugh Swinson Safety system for example marine crew safety system to be used by wheelchair dependant & able bodied people
DE29719485U1 (de) 1997-11-03 1999-03-18 Söll GmbH, 95028 Hof Absturzsicherung
DE60030669T2 (de) 1999-12-24 2007-09-13 T2 Systems Ltd. Strukturelemente und zugehörige Teile
GB2357543B (en) * 1999-12-24 2003-12-31 Total Fabrications Ltd Structural members
US6471000B2 (en) * 2001-03-16 2002-10-29 Albert A. Wolfe Safety harness and ladder assembly
US11346153B2 (en) * 2018-11-02 2022-05-31 Chen-Wei Lin Ladder
DE102018127562A1 (de) * 2018-11-05 2020-05-07 Chen-Wei Lin Leiterstruktur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933220A (en) * 1974-05-17 1976-01-20 Swager William E Climbing device
DE3426551A1 (de) * 1983-11-23 1985-05-30 Virtaradat Oy, Helsinki Daempfungseinrichtung
EP0418405A1 (de) * 1989-09-16 1991-03-27 Fahrleitungsbau GmbH Fangeinrichtung für eine Steigschutzeinrichtung

Also Published As

Publication number Publication date
FI923709L (fi) 1994-02-20
FI116512B (fi) 2005-12-15
DE69317913D1 (de) 1998-05-14
AU4711893A (en) 1994-03-15
DE69317913T2 (de) 1998-12-24
WO1994004786A1 (en) 1994-03-03
FI923709A0 (fi) 1992-08-19
EP0727006A1 (de) 1996-08-21

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