EP2826947B1 - Vertical lifeline for elevated work - Google Patents

Vertical lifeline for elevated work Download PDF

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Publication number
EP2826947B1
EP2826947B1 EP13720981.3A EP13720981A EP2826947B1 EP 2826947 B1 EP2826947 B1 EP 2826947B1 EP 13720981 A EP13720981 A EP 13720981A EP 2826947 B1 EP2826947 B1 EP 2826947B1
Authority
EP
European Patent Office
Prior art keywords
anchoring system
elevated work
work according
movable body
cable
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.)
Active
Application number
EP13720981.3A
Other languages
German (de)
French (fr)
Other versions
EP2826947A1 (en
Inventor
Florent Oriol
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.)
Escaleras Aguerri SL
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Escaleras Aguerri SL
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.)
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Publication date
Application filed by Escaleras Aguerri SL filed Critical Escaleras Aguerri SL
Publication of EP2826947A1 publication Critical patent/EP2826947A1/en
Application granted granted Critical
Publication of EP2826947B1 publication Critical patent/EP2826947B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/003—Indicating devices, e.g. user warnings or inclinators
    • 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
    • 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
    • A62B35/0068—Anchors
    • 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

Definitions

  • the present invention refers to a vertical lifeline having a cable for elevated work, wherein the lifeline comprises an upper anchoring system for anchoring the cable, which enables the user to gradually stop in the event of a fall, and prevents injuries to the user, absorbing part of the impact when the a prevention device is locked, so that the user does not have to absorb the entire impact.
  • Lifelines for vertical work are known in the state of the art, especially when said work is performed at great heights, such as in inner staircases in wind turbine towers, telecommunication towers, buildings undergoing rehabilitation, or in any vertical work requiring climbing through any climbing means, which may be manual, such as stairs, or mechanical, such as elevators. These lifelines guarantee the safety of the users in the event that they fall from great heights.
  • Known lifelines incorporate a cable that is arranged parallel to the climbing system, so that the users are anchored to said cable with some locking means that are capable of being released by easy manipulation to slide through the cable, thus enabling the user to climb, but also, if the user gets detached from the elevation system, said user will remain attached to the cable without falling.
  • Said lifeline's cable should be safely anchored to the upper part, since this is the point that must bear the weight of the cable and the entire load attached to said cable.
  • Attached to said anchor or upper anchoring system is the cable to which a fall prevention device is coupled, to which, in turn, some anchoring means are attached where the user hooks the body harness.
  • the fall prevention device is movable along the cable and can be locked/unlocked along said cable by the user during the process of climbing or descending the vertical ladder.
  • the aforementioned upper anchoring system for the cable may cause injuries for the user if the latter falls, due to the rigidity of said system, since the area of the user's body where the body harness is attached must instantly absorb all of the impact resulting from the fall prevention device being locked.
  • said systems have the disadvantage of breaking the safety chain during the operation of attaching or detaching the fall prevention device.
  • document CA2181858 discloses a vertical lifeline for elevated work according to the preamble of claim 1, comprising: an upper anchoring system arranged in the upper part of an installation; a lower anchoring system arranged on the lower part of the installation; and a cable, anchored to the anchoring systems, and configured both so as to be fastened to a user, as well as so as to be attached to a fall prevention device, wherein the upper anchoring system further comprises an energy absorption system enabling a gradual stop in the event of a fall.
  • an energy absorption system comprising: a movable body which is movable with respect to the upper anchoring system, wherein said movable body is attached to the cable; at least a breakable section comprised in the movable body; wherein the movable body has the shape of a plate and is rotatable around an articulation that is present in the upper anchoring system; and a surface, adjacent to the upper anchoring system, for actuating the breakable section(s).
  • the lifeline of the present invention solves all of the previously discussed disadvantages.
  • the present invention refers to a vertical lifeline for elevated work which comprises an upper anchoring system arranged on the upper part of the installation where the lifeline is arranged and a lower anchoring system placed on the lower part of said installation, wherein these systems enable the attachment of a cable to which a fall prevention device, which moves along the cable where the user is attached by a body harness or similar device, is coupled.
  • the cable's upper anchoring system further comprises an energy absorption system to gradually stop the user in the event of a fall and to prevent injuries to said user, since said energy absorption system takes on part of the impact when the fall prevention device is locked, so that the user does not have to absorb the entire impact.
  • the cable's upper anchoring system further comprises a secondary anchor point for the attachment of at least one user during the fall prevention system's lock and unlock operations, which prevents the safety chain from being broken, ensuring that the user is attached to the lifeline at all times throughout the use of the installation.
  • the lifeline further comprises some fall detection means which enable to instantly inform of the user's fall, with the subsequent advantages that arise from quickly being able to establish an appropriate rescue and/or safety plan in the event that it becomes necessary.
  • the lifeline for elevated work may be used in essentially vertical installations, i.e., which features a certain slope with respect to the vertical, but which fulfill the same aforementioned function.
  • a preferred embodiment of the lifeline of the present invention which comprises an upper anchoring system (1) arranged on the upper part of the installation (17) and a lower anchoring system (3) arranged on the lower part of the installation (17), these anchoring systems (1, 3) enabling to anchor a cable (4) to which a fall prevention device (5) is attached which is movable along the cable (4) and to which, in turn, some attachment means (6) are fixed, which in this preferred embodiment is a hook going through an opening of the fall prevention device (5), where the user is fastened.
  • the cable's upper anchoring system (1) comprises, in turn, an energy absorption system (2) which enables the gradual stop of the user in the event of a fall, where said energy absorption system (2) comprises a movable body (7) which is movable with respect to the upper anchoring system (1) and which is attached to the cable (4), the movable body (7) comprising at least one breakable section (8) which enables the user's gradually stop in the event of a fall.
  • the movable body (7) has the shape of a plate which is articulated at the upper anchoring system (1), so that in the event of a fall, the movable body (7) rotates around an articulation (9) that is present in the upper anchoring system (1), a surface (18) rigidly coupled to the upper anchoring system (1) thereby actuating at least a breakable section (8) in the movable body (7).
  • the movable body (7) comprises three breakable sections (8) which gradually break during the fall depending on the user's weight.
  • the cable's upper anchoring system (1) further comprises a secondary anchor point (10) for attaching the user during the lock and unlock operations of the fall prevention device (5), this secondary anchoring point (10) being fixed to a lateral of the upper anchoring system (1).
  • the lifeline further comprises some fall detection means (11) which comprise a safety electronic sensor which is placed in contact with the movable body (7) when said movable body (7) is in a stand-by position, Figure 2 , and is separated from said movable body (7) when said movable body moves with respect to the upper anchoring system (1) or rotates around the articulation (9) featured in said upper anchoring system (1), Figures 3 to 5 , so that it sends an alarm signal which may be integrated into the security protocol of the PLC monitoring the installation. This way, the PLC may send the alarm to the communications center and/or the rescue teams in order to implement a safety plan.
  • fall detection means (11) comprise a safety electronic sensor which is placed in contact with the movable body (7) when said movable body (7) is in a stand-by position, Figure 2 , and is separated from said movable body (7) when said movable body moves with respect to the upper anchoring system (1) or rotates around the articulation (9) featured in said upper anchoring system (1), Figures 3
  • the installation (17) is a ladder, where the upper anchoring system (1) is attached to the three upper steps (12) of said ladder, which prevents any risk of said upper anchoring system (1) moving with respect to the ladder.
  • the cable (4) is connected to the upper anchoring system (1) with a bezel and a thimble, without the possibility of using with single pieces.
  • the lower anchoring system (3) comprises a tensioner (13), a pretension indicator (14) and a fixing device (15) for fixing the cable (4) by using screws, where said lower anchoring system (3) is attached to the two lower steps (16) of the ladder.

Landscapes

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

Description

    OBJECT OF THE INVENTION
  • The present invention refers to a vertical lifeline having a cable for elevated work, wherein the lifeline comprises an upper anchoring system for anchoring the cable, which enables the user to gradually stop in the event of a fall, and prevents injuries to the user, absorbing part of the impact when the a prevention device is locked, so that the user does not have to absorb the entire impact.
    • BACKGROUND OF THE INVENTION
  • Lifelines for vertical work are known in the state of the art, especially when said work is performed at great heights, such as in inner staircases in wind turbine towers, telecommunication towers, buildings undergoing rehabilitation, or in any vertical work requiring climbing through any climbing means, which may be manual, such as stairs, or mechanical, such as elevators. These lifelines guarantee the safety of the users in the event that they fall from great heights.
  • Known lifelines incorporate a cable that is arranged parallel to the climbing system, so that the users are anchored to said cable with some locking means that are capable of being released by easy manipulation to slide through the cable, thus enabling the user to climb, but also, if the user gets detached from the elevation system, said user will remain attached to the cable without falling.
  • Said lifeline's cable should be safely anchored to the upper part, since this is the point that must bear the weight of the cable and the entire load attached to said cable.
  • For that purpose, there is the solution featured in the Spanish Utility Model having publication number ES1055904U , which discloses an anchor for a lifeline in a vertical ladder, of the type comprising an upper suspension fastener in order to hang a cable at the front of the ladder to be used, wherein the suspension fastener consists of a "U" shape piece, whose lateral branches are provided with two slits open from the end, while the central branch features an opening in the central area from which the lifeline's cable fastener is established, the piece being thereby arranged in a coupling anchor, by means of its lateral branches, over some attachment plates of the ladder in the installation assembly.
  • Attached to said anchor or upper anchoring system is the cable to which a fall prevention device is coupled, to which, in turn, some anchoring means are attached where the user hooks the body harness. The fall prevention device is movable along the cable and can be locked/unlocked along said cable by the user during the process of climbing or descending the vertical ladder.
  • The aforementioned upper anchoring system for the cable may cause injuries for the user if the latter falls, due to the rigidity of said system, since the area of the user's body where the body harness is attached must instantly absorb all of the impact resulting from the fall prevention device being locked.
  • Besides, the systems known in the state of the art do not allow instantly informing of the user's fall, with the subsequent delay in establishing an appropriate rescue and/or safety plan in the event it becomes necessary.
  • Furthermore, said systems have the disadvantage of breaking the safety chain during the operation of attaching or detaching the fall prevention device.
  • In particular, document CA2181858 discloses a vertical lifeline for elevated work according to the preamble of claim 1, comprising: an upper anchoring system arranged in the upper part of an installation; a lower anchoring system arranged on the lower part of the installation; and a cable, anchored to the anchoring systems, and configured both so as to be fastened to a user, as well as so as to be attached to a fall prevention device, wherein the upper anchoring system further comprises an energy absorption system enabling a gradual stop in the event of a fall.
  • Additionally document US2011/094839 discloses an energy absorption system comprising: a movable body which is movable with respect to the upper anchoring system, wherein said movable body is attached to the cable; at least a breakable section comprised in the movable body; wherein the movable body has the shape of a plate and is rotatable around an articulation that is present in the upper anchoring system; and a surface, adjacent to the upper anchoring system, for actuating the breakable section(s).
  • The lifeline of the present invention solves all of the previously discussed disadvantages.
    • DESCRIPTION OF THE INVENTION
  • The present invention refers to a vertical lifeline for elevated work which comprises an upper anchoring system arranged on the upper part of the installation where the lifeline is arranged and a lower anchoring system placed on the lower part of said installation, wherein these systems enable the attachment of a cable to which a fall prevention device, which moves along the cable where the user is attached by a body harness or similar device, is coupled.
  • The cable's upper anchoring system further comprises an energy absorption system to gradually stop the user in the event of a fall and to prevent injuries to said user, since said energy absorption system takes on part of the impact when the fall prevention device is locked, so that the user does not have to absorb the entire impact.
  • The cable's upper anchoring system further comprises a secondary anchor point for the attachment of at least one user during the fall prevention system's lock and unlock operations, which prevents the safety chain from being broken, ensuring that the user is attached to the lifeline at all times throughout the use of the installation.
  • The lifeline further comprises some fall detection means which enable to instantly inform of the user's fall, with the subsequent advantages that arise from quickly being able to establish an appropriate rescue and/or safety plan in the event that it becomes necessary.
  • The lifeline for elevated work may be used in essentially vertical installations, i.e., which features a certain slope with respect to the vertical, but which fulfill the same aforementioned function.
    • DESCRIPTION OF THE DRAWINGS
  • To complement the description being made and in order to help better understand the features of the invention, according to a preferred embodiment thereof, a set of drawings is attached as an integral part of said description, wherein the following is shown as way of illustration but not limited to:
    • Figure 1.- Shows a perspective view of the vertical lifeline for elevated work of the present invention, installed over a vertical ladder.
    • Figures 2 to 5.- Show a sectioned detailed view of the upper anchoring system in different positions of the energy absorption system.
    PREFERRED EMBODIMENT OF THE INVENTION
  • In light of the figures, described below is a preferred embodiment of the lifeline of the present invention which comprises an upper anchoring system (1) arranged on the upper part of the installation (17) and a lower anchoring system (3) arranged on the lower part of the installation (17), these anchoring systems (1, 3) enabling to anchor a cable (4) to which a fall prevention device (5) is attached which is movable along the cable (4) and to which, in turn, some attachment means (6) are fixed, which in this preferred embodiment is a hook going through an opening of the fall prevention device (5), where the user is fastened.
  • The cable's upper anchoring system (1) comprises, in turn, an energy absorption system (2) which enables the gradual stop of the user in the event of a fall, where said energy absorption system (2) comprises a movable body (7) which is movable with respect to the upper anchoring system (1) and which is attached to the cable (4), the movable body (7) comprising at least one breakable section (8) which enables the user's gradually stop in the event of a fall.
  • The movable body (7) has the shape of a plate which is articulated at the upper anchoring system (1), so that in the event of a fall, the movable body (7) rotates around an articulation (9) that is present in the upper anchoring system (1), a surface (18) rigidly coupled to the upper anchoring system (1) thereby actuating at least a breakable section (8) in the movable body (7).
  • Preferably, the movable body (7) comprises three breakable sections (8) which gradually break during the fall depending on the user's weight.
  • The cable's upper anchoring system (1) further comprises a secondary anchor point (10) for attaching the user during the lock and unlock operations of the fall prevention device (5), this secondary anchoring point (10) being fixed to a lateral of the upper anchoring system (1).
  • The lifeline further comprises some fall detection means (11) which comprise a safety electronic sensor which is placed in contact with the movable body (7) when said movable body (7) is in a stand-by position, Figure 2, and is separated from said movable body (7) when said movable body moves with respect to the upper anchoring system (1) or rotates around the articulation (9) featured in said upper anchoring system (1), Figures 3 to 5, so that it sends an alarm signal which may be integrated into the security protocol of the PLC monitoring the installation. This way, the PLC may send the alarm to the communications center and/or the rescue teams in order to implement a safety plan.
  • In a preferred embodiment, the installation (17) is a ladder, where the upper anchoring system (1) is attached to the three upper steps (12) of said ladder, which prevents any risk of said upper anchoring system (1) moving with respect to the ladder.
  • The cable (4) is connected to the upper anchoring system (1) with a bezel and a thimble, without the possibility of using with single pieces.
  • The lower anchoring system (3) comprises a tensioner (13), a pretension indicator (14) and a fixing device (15) for fixing the cable (4) by using screws, where said lower anchoring system (3) is attached to the two lower steps (16) of the ladder.

Claims (13)

  1. Vertical lifeline for elevated work which comprises:
    - an upper anchoring system (1) arrangeable in the upper part of the installation (17);
    - a lower anchoring system (3) arrangeable on the lower part of the installation (17); and
    - a cable (4) anchored to the anchoring systems, said cable (4) being configured both so as to be fastened to the user and so as to be attached to a fall prevention device (5); and
    - an energy absorption system (2) located in the upper anchoring system (1) for enabling the gradual stop of the user in the event of a fall;
    characterized in that the energy absorption system (2) comprises:
    - a movable body (7) which is movable with respect to the upper anchoring system (1), wherein said movable body (7) is attached to the cable (4), and
    - at least a breakable section (8) comprised in the movable body (7);
    wherein the movable body (7) has the shape of a plate and is rotatable around an articulation (9) that is present in the upper anchoring system (1), where the lifeline further comprises a surface (18) rigidly coupled to the upper anchoring system (1), for actuating the breakable section(s) (8).
  2. Vertical lifeline for elevated work according to claim 1, characterized in that the movable body (7) comprises three breakable sections (8).
  3. Vertical lifeline for elevated work according to any of the above claims, characterized in that it further comprises a fall detection means (11).
  4. Vertical lifeline for elevated work according to claims 2 and 3, characterized in that the fall detection means (11) comprise a safety electronic sensor configured so as to be in contact with the movable body (7) when said movable body (7) is in a stand-by position and to be separated from said movable body (7) when said movable body (7) moves with respect to the upper anchoring system (1).
  5. Vertical lifeline for elevated work according to any of the above claims, characterized in that the upper anchoring system (1) of the cable further comprises a secondary anchoring point (10) for attaching the user lock and unlock operations of the fall prevention device (5).
  6. Vertical lifeline for elevated work according to claim 5, characterized in that the secondary anchoring point (10) is fixed to a lateral of the upper anchoring system (1).
  7. Vertical lifeline for elevated work according to any of the above claims, characterized in that the cable (4) is connected to the upper anchoring system (1) with a bezel and a thimble.
  8. Vertical lifeline for elevated work according to any of the above claims, characterized in that the lower anchoring system (3) comprises a tensioner (13).
  9. Vertical lifeline for elevated work according to any of the above claims, characterized in that the lower anchoring system (3) comprises a pretension indicator (14).
  10. Vertical lifeline for elevated work according to any of the above claims, characterized in that the lower anchoring system (3) comprises a fixing device (15) for fixing the cable (4) by means of screws.
  11. Vertical lifeline for elevated work according to any of the above claims, characterized in that the installation (17) is a ladder.
  12. Vertical lifeline for elevated work according to claim 11, characterized in that the upper anchoring system (1) is attached to the three upper steps (12) of the ladder.
  13. Vertical lifeline for elevated work according to claim 11, characterized in that the lower anchoring system (3) is attached to the two lower steps (16) of the ladder.
EP13720981.3A 2012-03-13 2013-03-11 Vertical lifeline for elevated work Active EP2826947B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201230380A ES2385530B1 (en) 2012-03-13 2012-03-13 Vertical lifeline for work at height
PCT/ES2013/070152 WO2013135929A1 (en) 2012-03-13 2013-03-11 Vertical lifeline for working at heights

Publications (2)

Publication Number Publication Date
EP2826947A1 EP2826947A1 (en) 2015-01-21
EP2826947B1 true EP2826947B1 (en) 2016-05-04

Family

ID=46466973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13720981.3A Active EP2826947B1 (en) 2012-03-13 2013-03-11 Vertical lifeline for elevated work

Country Status (3)

Country Link
EP (1) EP2826947B1 (en)
ES (2) ES2385530B1 (en)
WO (1) WO2013135929A1 (en)

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US10806955B2 (en) * 2015-12-23 2020-10-20 Xsplatforms B.V. Fall arrestor to gradually absorb a pull on a safety cable coupled with the fall arrestor

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US11480013B2 (en) * 2017-12-04 2022-10-25 Formetco, Inc. Fall protection system
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EP3797202B1 (en) * 2018-05-22 2023-10-11 Branach Technology Pty Ltd Fall control ladder
WO2020150212A1 (en) 2019-01-14 2020-07-23 Msa Technology, Llc Fall protection compliance system and method
CN114718054B (en) * 2022-04-19 2024-03-01 山东省建筑工程质量检验检测中心有限公司 Emergency protection device for manual hole digging pile

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US10806955B2 (en) * 2015-12-23 2020-10-20 Xsplatforms B.V. Fall arrestor to gradually absorb a pull on a safety cable coupled with the fall arrestor

Also Published As

Publication number Publication date
WO2013135929A8 (en) 2014-04-10
EP2826947A1 (en) 2015-01-21
ES2385530B1 (en) 2013-05-31
WO2013135929A1 (en) 2013-09-19
ES2385530A1 (en) 2012-07-26
ES2587943T3 (en) 2016-10-27

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