WO2007131508A1 - système de protection antichute pour les utilisateurs d'échelles - Google Patents

système de protection antichute pour les utilisateurs d'échelles Download PDF

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Publication number
WO2007131508A1
WO2007131508A1 PCT/DK2007/000229 DK2007000229W WO2007131508A1 WO 2007131508 A1 WO2007131508 A1 WO 2007131508A1 DK 2007000229 W DK2007000229 W DK 2007000229W WO 2007131508 A1 WO2007131508 A1 WO 2007131508A1
Authority
WO
WIPO (PCT)
Prior art keywords
rail
fall protection
hinge
sides
latch
Prior art date
Application number
PCT/DK2007/000229
Other languages
English (en)
Inventor
Søren MIDTGAARD
Original Assignee
Avanti Stigefabrik A/S
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 Avanti Stigefabrik A/S filed Critical Avanti Stigefabrik A/S
Priority to DE602007006301T priority Critical patent/DE602007006301D1/de
Priority to EP07722608A priority patent/EP2021574B1/fr
Priority to AT07722608T priority patent/ATE467032T1/de
Publication of WO2007131508A1 publication Critical patent/WO2007131508A1/fr

Links

Classifications

    • 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
    • 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
    • A62B35/0043—Lifelines, lanyards, and anchors therefore
    • A62B35/005—Vertical lifelines

Definitions

  • the invention relates to a system for protecting individuals during work on ladders with rungs, which system encompasses anti-fall protection that comprises a first and a second side and a displaceable hinge that can be secured to an individual by means of a safety line, safety harness or the like and a rail for being attached in an essentially vertical position on or at the ladder; said anti-fall protection and rail having cooperating locking means that are adapted such that the anti-fall protection is able to slide on the rail when the hinge is displaced in one direction, and is secured on the rail when the hinge is displaced in another direction, said rail and anti-fall protection being also configured with complementary and asymmetrical engagement means such that the anti-fall protection can be mounted on the rail with only one side up, and wherein said first and second sides can be displaced relative to each other to the effect that the engagement means can be caused to engage and disengage the rail.
  • Equipment for anti-fall protection which is used in connection with eg work on ladders.
  • Such equipment usually comprises a anti-fall protection which is able to slide on a rail intended therefor.
  • the anti-fall protection usually comprises a brace or a hinge which, via eg one or more snap hooks and a safety harness, can be connected to the worker who uses the equipment.
  • This kind of anti-fall protection functions in that the anti-fall protection slides on the rail at the rates and accelerations that occur in case of normal use of the ladder and, in return, locks securely onto the rail at the rates and accelerations that usually occur in case of a fall.
  • the underlying mechanical principle of these anti-fall protection systems is based on an eccentric mechanism accommodated at the bottom of the brace or the hinge which is rotatably joumalled.
  • the eccentric mechanism functions in that it is forced into locking engagement with the rail when the brace or the hinge is influenced relatively by a downwards force.
  • the hinge When the anti-fall protection is used by a person who climbs the ladder, the hinge thus occupies such position where the eccentric is released from the rail, whereas a fall will influence the brace or the hinge in a direction where the eccentric engages lockingly with the rail.
  • the system comprises an anti-fall protection provided with brace/hinge which is mounted on a rail configured therefor.
  • the anti-fall protection allows the individual using it to move up and down in case of normal use of the ladder, but in case an individual using the system slides or falls, the slider instantly locks onto the rail.
  • the anti-fall protection functions by means of an eccentrics mechanism as described above which is connected to the hinge or the brace and which, when the hinge/brace is influenced by a sufficient force in a downwards direction, is forced to lockingly engage the associated rail.
  • the anti-fall protection between the first and the second sides also comprises connection means that cooperate with the hinge to the effect that the first and the second sides of the anti-fall protection can be displaced out of engagement with the rail only when the hinge is shifted in one direction, said connection means being configured such that the first and the second sides of the anti-fall protection can be shifted out of engagement with the rail only when the hinge is displaced in a direction where it does not lock the anti-fall protection against the rail; and wherein the anti-fall protection further comprises a stop means that allows the hinge to be moved to a position in which the anti-fall protection is able to slide on the rail, but prevents the hinge from being moved to a position, where the first and the second sides can be shifted out of their engagement with the rail, which stop means cooperates with a displaceable latch to the effect that the latch is to be taken to a predetermined position before the stop means can be moved to a position in which the first and the second sides can be shifted out of engagement with the rail
  • the anti-fall protection, latch, ladder and rail are adapted to each other to be such that the latch will hit the rungs of the ladder when the anti-fall protection is mounted on the rail, and the latch occupies the position in which it allows a movement of the stop means to enable it to occupy a position where the hinge can be moved to a position in which the first and the second sides can be shifted out of engagement with the rail.
  • the invention further relates to an anti-fall protection as featured in claims 3- 4.
  • the designation 'hinge' comprises any kind of displaceable mechanism to which an individual is able to secure a line.
  • Figure 1 is a perspective view of an anti-fall protection on which a rail is mounted
  • Figure 2 is a perspective view of an anti-fall protection in a partially exploded view
  • Figure 3 is a perspective view of an anti-fall protection as shown in Figure 1 in a partially exploded view, from another angle;
  • Figure 4 shows an anti-fall protection as shown in Figure 1 with its latch in pressed-in position
  • Figure 5 shows the anti-fall protection shown in Figure 4 with mounted and pressed-in latch
  • Figure 6 shows the anti-fall protection shown in Figure 3 with mounted and pressed-in latch, where the hinge is turned forwards to the position where the sides can be pulled apart;
  • FIG. 7 shows a latch seen from the side.
  • Figure 1 is a perspective view of an anti-fall protection 1 on which a rail (2) is mounted.
  • the anti-fall protection comprises a first and a second side 10, 11 and a displaceable hinge 12, to which an individual can be secured by means of a safety line, safety harness or the like (not shown).
  • the system further comprises a rail 20 for attachment in an essentially vertical position on or at the ladder (not shown either).
  • Anti-fall protection 1 and rail 20 are configured with co-operating locking means that are adapted such that the anti-fall protection is able to slide on the rail 20 when the hinge 12 is displaced in one direction and locked onto the rail 20 when the hinge is displaced in another direction.
  • the locking means are constituted by an eccentric 15 at the bottom of the hinge 12 which can be forced downwards towards the ladder 20 when the anti-fall protection is mounted on the rail, and the hinge is turned about the axis 18.
  • the rail 20 and the anti-fall protection are also configured with complementary and asymmetrical engagement means 13, 14 and 21 , 22 which, in the shown case, are constituted by flanges 21 , 22 on the rail and cavities 13, 14 configured therefor in the anti-fall protection.
  • That edge 23 and the associated recess 16 ensure that the anti-fall protection can be mounted on the rail in only one way.
  • the anti-fall protection is constructed such that the two sides 10 and 11 can be shifted in such a way relative to each other that the cavities 13, 14 can be pulled off the flanges of the rail and thereby the anti-fall protection can be mounted and dismounted anywhere on the rail.
  • this functionality is obtained ia through the use of a guide 17 on which the part 10 can be mounted slideably by means of an opening 18 corresponding to the guide.
  • the technical means that connect the first 10 and the second side 11 of the anti-fall protection are configured such that the side can be shifted out of engagement with the rail 20 only when the hinge 12 is in a specific position.
  • an opening 40 will appear which is, to the right of the Figure, round and, further into the side 10, it proceeds to assume a substantially square shape.
  • the square part of the opening 40 extends such distance into the side 10 that the corresponding head 41 on the shaft 19 allows a relative and axial movement between the shaft 19 and the side 10 when the head is in the square part of the opening 40.
  • This attachment takes place by means of rivets 30, 31 (shown in Figure 2) that are able to engage with a corresponding recess in the one end of the shaft when the latter is introduced into the other side 11 of the anti-fall protection, and the rivets 30, 31 are mounted in holes configured therefore (not shown) underneath the openings 31a and 32a (as are shown in Figure 3).
  • the length of the shaft 19 is adapted such to the anti- fall protection that the head 41 is located in the round part of the hole 40 when the anti-fall protection is mounted on the rail 20, and thereby a rotation of the shaft is allowed an hence also of the hinge 12 when the anti-fall protection is used on the rail.
  • the hinge is turned to a position where the square head of the shaft is able to slide into the corresponding square part of the hole 40, following which the side 10 can be displaced relatively relative to the side 11 , the head now being able to side into the square part of the hole 40.
  • the anti-fall protection is secured against the sides being entirely dismounted, the internal diameter 42 of the hole 40 (best seen in Figure 2) being of such size and shape that the head 41 is unable to pass there through.
  • Figure 4 shows an embodiment of the invention where the hinge is shifted to a position where the eccentric mechanism 15 (not shown in Figure 4) is not in engagement with the rail, but wherein the sides 10 and 11 can be shifted mutually to the effect that the anti-fall protection can be dismounted from and mounted on the rail 20.
  • Figure 5 schematically shows how the anti-fall protection further comprises a stop means which, in its shown position, allows the hinge to be moved to the position where the anti-fall protection is able to slide on the rail and simultaneously be dismounted from or mounted on the rail.
  • This stop means 32 is joumalled rotatably on a shaft 34 and the shop means comprises an edge 32 (shown in Figure 3) which is able to lockingly engage with a corresponding edge 33 on the hinge (also shown in Figure 3).
  • the shaft 34 of the stop means 32 is spring- biased such that the stop means seeks towards the position in which it prevents the hinge from turning towards the position in which the anti-fall protection can be separated from the rail. Thereby further preventive measures against the anti-fall protection being unintentionally dismounted form the rail 20 are provided.
  • the hinge 12 can also be securely locked in engagement with the stop means 32, it being possible to fixate the stop means in this position by means of a latch 50.
  • the latch 50 which is shown in greater detail in Figure 7 is, in this embodiment of the invention, mounted such - in the second side 11 of the anti-fall protection, as shown in figures 1 and 3 - that it can be displaced in its longitudinal direction.
  • the latch has an area which is able to engage with an essentially flat piece 35 on the shaft of the stop means 32, and the length of the latch is adapted to be such that it takes place precisely when the latch is, as shown in Figure 1 , pressed partially into the anti-fall protection.
  • the latch further has an area 51 of reduced diameter and that area is adapted to the shaft on the stop means to enable the stop means to rotate when that part 51 of the latch is arranged opposite the shaft 35 of the stop means.
  • the latch allows rotation only when the latch is pressed completely into the anti-fall protection, as shown by figures 4 and 5.
  • the anti-fall protection and the latch can be adapted to be such that the lower end 52 of the latch protrudes out through the underside of the anti-fall protection. It is the object of this that the end 52 of the latch - when the latch allows rotation of the stop means 32 - can and will hit the rungs of a ladder (not shown in the figuresl on which the rail 20 and anti-fall protection are mounted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Ladders (AREA)
  • Emergency Lowering Means (AREA)
  • Programmable Controllers (AREA)

Abstract

La présente invention concerne un système de protection antichute de personnes travaillant sur des échelles avec des barreaux. Le système comprend une protection antichute avec un premier et un second côté et une charnière mobile pouvant être fixée à une personne au moyen d'une corde de sécurité, d'un harnais ou analogue, et un rail pour une fixation dans une position sensiblement verticale sur ou au niveau de l'échelle. La protection antichute et le rail comportent des moyens de verrouillage coopérants conçus pour que ladite protection puisse coulisser sur le rail lorsque ce dernier est déplacé dans une direction et elle est solidement attachée au rail lorsque la charnière est déplacée dans une autre direction. Le rail et la protection antichute sont également configurés avec des moyens de mise en prise complémentaires et asymétriques pour que ladite protection puisse être montée sur le rail avec uniquement un côté vers le haut, et lesdits premier et second côtés étant mutuellement mobiles pour que les moyens puissent être amenés à se dégager du rail. Entre les premier et second côtés, le système antichute comprend également des moyens de raccord qui coopèrent avec la charnière dans le but que les premier et second côtés de ladite protection puissent être dégagés du rail uniquement lorsque la charnière est déplacée dans une direction.
PCT/DK2007/000229 2006-05-16 2007-05-14 système de protection antichute pour les utilisateurs d'échelles WO2007131508A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602007006301T DE602007006301D1 (de) 2006-05-16 2007-05-14 System und absturzsicherung für personen, die leitern verwenden
EP07722608A EP2021574B1 (fr) 2006-05-16 2007-05-14 Système de protection antichute pour les utilisateurs d'échelles
AT07722608T ATE467032T1 (de) 2006-05-16 2007-05-14 System und absturzsicherung für personen, die leitern verwenden

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200600685A DK177726B1 (da) 2006-05-16 2006-05-16 Et system og en faldsikring til beskyttelse af personer, som benytter stiger
DKPA200600685 2006-05-16

Publications (1)

Publication Number Publication Date
WO2007131508A1 true WO2007131508A1 (fr) 2007-11-22

Family

ID=38326796

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2007/000229 WO2007131508A1 (fr) 2006-05-16 2007-05-14 système de protection antichute pour les utilisateurs d'échelles

Country Status (6)

Country Link
EP (1) EP2021574B1 (fr)
AT (1) ATE467032T1 (fr)
DE (1) DE602007006301D1 (fr)
DK (1) DK177726B1 (fr)
ES (1) ES2345850T3 (fr)
WO (1) WO2007131508A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103656914A (zh) * 2012-09-13 2014-03-26 中际联合工业技术(北京)有限公司 安全锁及防坠器
CN107952189A (zh) * 2017-11-09 2018-04-24 国网山东省电力公司临沂供电公司 用于杆塔作业的防坠装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437846A1 (fr) * 1978-10-03 1980-04-30 Linelec Dispositif d'assujettissement individuel de securite pour le personnel
DE8606240U1 (de) * 1986-03-07 1986-04-24 Lorenz Hasenbach GmbH & Co KG, 6277 Bad Camberg Fallschutzläufer für Fallschutzschienen
DE20314230U1 (de) * 2003-09-12 2003-11-06 Christian Dalloz Holding Deuts Auffanggerät als Teil einer Absturzsicherung für Leitern und ähnliche Steigwege

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437846A1 (fr) * 1978-10-03 1980-04-30 Linelec Dispositif d'assujettissement individuel de securite pour le personnel
DE8606240U1 (de) * 1986-03-07 1986-04-24 Lorenz Hasenbach GmbH & Co KG, 6277 Bad Camberg Fallschutzläufer für Fallschutzschienen
DE20314230U1 (de) * 2003-09-12 2003-11-06 Christian Dalloz Holding Deuts Auffanggerät als Teil einer Absturzsicherung für Leitern und ähnliche Steigwege

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103656914A (zh) * 2012-09-13 2014-03-26 中际联合工业技术(北京)有限公司 安全锁及防坠器
CN107952189A (zh) * 2017-11-09 2018-04-24 国网山东省电力公司临沂供电公司 用于杆塔作业的防坠装置

Also Published As

Publication number Publication date
EP2021574A1 (fr) 2009-02-11
DK200600685A (da) 2007-11-17
ATE467032T1 (de) 2010-05-15
EP2021574B1 (fr) 2010-05-05
ES2345850T3 (es) 2010-10-04
DE602007006301D1 (de) 2010-06-17
DK177726B1 (da) 2014-05-05

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