EP2832937B1 - Équipement de sécurité antichute, en particulier pour réaliser des sols dans un logement résidentiel - Google Patents

Équipement de sécurité antichute, en particulier pour réaliser des sols dans un logement résidentiel Download PDF

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Publication number
EP2832937B1
EP2832937B1 EP14178659.0A EP14178659A EP2832937B1 EP 2832937 B1 EP2832937 B1 EP 2832937B1 EP 14178659 A EP14178659 A EP 14178659A EP 2832937 B1 EP2832937 B1 EP 2832937B1
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EP
European Patent Office
Prior art keywords
sleeve
bush
equipment
upright
end section
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.)
Not-in-force
Application number
EP14178659.0A
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German (de)
English (en)
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EP2832937A1 (fr
Inventor
Paolo Vaccarini
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Individual
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Individual
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Publication of EP2832937A1 publication Critical patent/EP2832937A1/fr
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Publication of EP2832937B1 publication Critical patent/EP2832937B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • 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
    • A62B35/0056—Horizontal 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

Definitions

  • the present invention for industrial patent relates to an anti-fall safety equipment, in particular for realizing floors in residential housing.
  • the present invention relates to a preventive and protective equipment against falls from a height, which allows for realizing horizontal structures, such as beams and floors for residential housing, having a minimum distance between the work surface and the underneath level lower than 3 m and higher than the maximum height of 2 m required by the safety regulations of building yards.
  • the safety system must stop the free fall and hold the worker in such manner to avoid personal injuries.
  • a set of uprights is fixed on top of the pillars, being provided with an upper eyelet into which at least one horizontal rope is inserted.
  • the operator can attach one end of the safety cable to the sling and the other end of the safety cable to a rope of the network of horizontal ropes, for example with a snap-hook.
  • the worker is attached to the network of horizontal ropes with the safety cable. At the same time he can move between the pillars because the upper end of the safety cable can slide with respect to the horizontal rope where it is attached.
  • the length of the safety cable determines the free movement and the maximum travel of the worker in case of a free fall.
  • a very long safety cable would provide a wide freedom of movement to the workers, but would not guarantee a safety stop in case of an accidental free fall.
  • ITAN20110174 A1 discloses a safety equipment according to the preamble of claim 1.
  • Figs. 1 and 2 diagrammatically show what happens in case of an accidental fall of a worker.
  • the parameter that must be guaranteed according to the legislation is the safety height (QS), which is the height at which the free fall of the worker is stopped, with respect to the underneath surface, in case of a free fall.
  • QS safety height
  • Fig. 1 shows a lower level (PI) and an upper level (PS) supported by three aligned pillars (1) extending between said lower level (PI) and said upper level (PS).
  • Fig. 1 also shows three uprights (2), each of them being fixed on top of each pillar (1) and being provided with a top eyelet (12) wherein a horizontal rope (3) is inserted.
  • the height (h2) of the uprights (2) must exceed the height of the operator (6) slightly; more precisely, said height must be such to allow the operator (6) to carry out these operations while standing on the upper level (PS) without using a ladder or the like.
  • Fig. 2 shows what happens when the operator (6) accidentally falls from the upper level (PS).
  • the body of the operator (6) stops at a safety height (QS) that depends on the height (h1) of the pillars (1), on the height (h2) of the uprights (2), on the length (h4) of the safety cable (4), on the arrow (F) caused by the downward bending of the horizontal rope (3) where the safety cable (4) is fixed, and on the height (h5) of the operator (6).
  • QS safety height
  • the height (h5) is the distance between the fixing point of the safety cable (4) to the sling (5) and the feet of the operator (6).
  • the arrow (F) depends on the length of the horizontal rope (3) given that the latter is only fixed at its ends.
  • Such an anti-fall safety equipment is not suitable to work in structures with a height (h1) of the pillars (1) between two levels (PI and PS) lower than 3 m.
  • the design of the safety equipment should alternatively provide for:
  • the purpose of the present invention is to devise a new anti-fall safety equipment that, while maintaining the aforementioned structural configuration, can be advantageously used also when floors are spaced by a distance lower than 3 m. Such purpose is achieved with a safety equipment according to claim 1.
  • the present invention is based on the provision of one or more tightening and tensioning devices on top of each upright (2), which are adapted to fix and advantageously tighten a section of the horizontal rope.
  • each of said devices allows for inserting the horizontal rope through an eyelet and tightening it.
  • the rope (3) can be divided into several sections (3a) comprised between an adjacent pair of uprights (2).
  • said tightening devices also allow for tensioning the rope (3).
  • the equipment of the invention comprises a set of uprights (2) with lower end section (2b) fixed on top (1 a) of a pillar (1) and with upper end section (2a) provided with tightening and tensioning means (7) of at least one horizontal rope (3) that connects two adjacent uprights (2).
  • the equipment comprises a set of bushes (8) adapted to be fixed on top of the pillar (1), substantially in axis, in such manner that one of the two ends of the bush (8), specifically the upper end (8a), is faced upwards.
  • the bush (8) can be partially drowned inside the pillar (1) as long as the mouth (8b) defined by the upper end (8a) can be accessed from above.
  • Figs. 7 and 8 show one of the tightening and tensioning devices (7) of the horizontal ropes (3), as well as the tensioning means (7c,9) that cooperate when said tightening and tensioning device (7) is coupled with the upright (2).
  • each upright (2) has an upper end (2a) with an upper circular mouth (2c) adapted to house the lower end section (7a) of the tightening device (7).
  • said tightening and tensioning device (7) consists in a circular sleeve (7) provided with a lower end (7a) having the external diameter identical to the internal diameter of the upper end (2a) of the upright (2).
  • the device (7) is provided with an upper end (7b) having the internal diameter identical to the internal diameter of the upper end (2a) of the upright (2).
  • each device (7) can be fixed with each upright (2), and it can also be fixed in such manner that multiple tightening and tensioning devices (7) are overlapped in the same upright (2), thus allowing the user to personalize the network of horizontal ropes (3).
  • the upper end section (2a) of the upright (2) and the lower end section (7a) of the sleeve (7) are provided with means (7c, 9) adapted to lock the rotation of the sleeve (7) with respect to the upright (2).
  • Said means (7c, 9) consist in a toothed profile (7c) obtained on the external surface of the lower end section (7a) of the sleeve (7), and in a striker (9) arranged in correspondence of the upper end section (2a) of the upright (2) and provided with a tip adapted to be engaged inside a tooth of said toothed profile (7c) as soon as the sleeve (7) is completely inserted into the upright (2).
  • the sleeve (7) is provided with an external annular tooth (7d) that acts as stop and defines the lower end section (7a) with smaller external diameter with respect to the upper end section (7b) with larger diameter.
  • the sleeve (7) is also provided with a pair of diametrally opposite longitudinal notches (7e) ending in upper position; said longitudinal notches (7e) are adapted to house one of the horizontal ropes (3) that are inserted inside the notches (7e) from above.
  • the tightening and tensioning of the horizontal ropes (3) provides for rotating the sleeve (7) with respect to the upright (2) wherein it is inserted, or with respect to the sleeve (7) underneath, in case of multiple sleeves (7) disposed one on top of the other and supported by the same upright (2), as shown in Fig. 9 .
  • the striker (9) is retracted and overrides the teeth until rotation is completed; in such a configuration, the striker (9) is inserted and pushed inside the tooth opposed to it.
  • each rope (3) is provided with a set of sections (3a) comprised between two adjacent uprights (2).
  • the equipment of the invention also comprises a sling (5) adapted to be worn by the operator (6) and a safety cable (4) with lower end (4b) fixed to said sling (5), whereas the upper end (4a) is slidingly and selectively fixed to one of the sections (3a) of the horizontal ropes (3) of the network.
  • Figs. 10A and 10B show the tightening and tensioning device (7) with the striker (9); specifically the striker (9) has a T-shaped enlarged head adapted to be actuated by an ordinary hammer.
  • the striker (9) ends with a transversal wing (91) that can be grabbed with the forked end of a hammer, such as the ones that are normally used to remove nails.
  • a hammer can be used to unlock the striker (9), exactly like when removing a nail.
  • the striker (9) can be actuated easily, considering that, in operational position, it requires a great amount of energy in order to be disengaged from the tooth of the toothed profile (7c).
  • the striker (9) can be hit from down up in order to be disengaged from the toothed profile (7c).
  • the striker and its housing are shaped in such manner that, when the striker is engaged with the toothed profile (7c), the device (7) can be extracted backwards only if the striker (9) is lifted.
  • Fig. 11 shows the upright (2) according to a second embodiment, wherein a stiffening rod (20) is inserted into the upright (2).
  • stiffening rod (20) increases the rigidity of the upright (2) in any radial direction of stress, unlike tie-rods that would make the upright (2) rigid almost exclusively in a direction opposite to the one in which they are fixed to the upright (2).
  • the rigidity of the upright (2) depends on the thickness of the upright (2) and additionally on the thickness of the stiffening rod (20); alternatively, in order to obtain such a rigidity, the thickness of the upright (2) can be increased, although this results in a higher weight of the upright during the installation of the equipment (in contrast with the safety regulations for building yards).
  • Fig. 11 shows an upright (2) and a stiffening rod (20) with square section.
  • the equipment of the invention comprises a bush (T) adapted to close the sleeve (7).
  • the peculiarity of the bush (T) consists in a top wall (T1), which is centrally provided with a hole (T2) with square section wherein the square pin of a dynamometric wrench (not shown in the attached figures) is inserted.
  • the top wall (T1) of the bush (T) is also provided with a side (T1 a) faced towards the sleeve (7), from which two teeth (T3) protrude in diametrally opposite position, which are adapted to be inserted in the pair of notches (7e); by rotating the bush (T) with a dynamometric wrench, rotation is transmitted to the sleeve (7) by means of the pair of teeth (T3) inserted into the pair of notches (7e) in order to precisely tension the rope (3) inserted in the pair of notches.
  • the bush of the invention is provided with a side edge (T4) to which said teeth (T3) are joined; said edge (T4) surrounds and embraces the top section of the sleeve (7) when the bush (T) is inserted onto the sleeve (7) in operating position.
  • the side edge (T4) allows the bush to remain inserted on the tightening and tensioning device (7) without having to be constantly maintained in the correct operating position by the operator.
  • the side edge (T4) is provided with a notch (T5) perpendicular with respect to the top wall (T1), which houses the striker (9), as shown in Fig. 13 .
  • the equipment of the invention preferably comprises a Y-shaped safety cable so that the operator can fix the lower end of the Y-shaped cable to the sling, and the other two upper ends of the Y-shaped cable to two adjacent sections (3a) of the rope (3) in order to guarantee the safety of the operator, who is always attached with at least one of the two end sections of the safety cable.
  • the operator when moving along a rope (3) and passing beyond an upright (2), the operator can unfix the first end section of the Y-shaped cable, fix it to a section of rope (3) downstream the upright (2) and remain attached to the section of rope (3) upstream the upright (2) with the second end section of the Y-shaped cable.
  • the operator can unfix the second section of the Y-shaped cable and fix it along the rope (3) downstream the upright (2) to continue his route.
  • the bush (8) has a quadrangular section and the equipment of the invention comprises a plug (81) with basically T-shaped configuration, which comprises a vertical portion (81 a) adapted to be exactly inserted into the bush (8) and an enlarged head (81 b) adapted to remain outside the bush (8) and rest on the mouth (8b) of the bush (8).
  • the plug (81) comprises:
  • the height of the wings (81 d) is identical to the height of the upper end (8a) of the bush (8), which protrudes from the top (1 a) of the pillar (1) when the bush (8) is drowned inside the pillar (1).
  • the plug (81) is used to correctly operate the bush (8), which must be partially drowned inside the pillar (1).
  • the plug (81) is inserted inside the bush (8) and, as soon as the pillar is cast, the bush and the plug are simultaneously inserted inside the pillar from above, until the wings (81 d) of the plug (81) are engaged on the free surface of the concrete casting.
  • the plug (81) can be extracted from the bush (8), which remains firmly drowned inside the pillar (1), with the upper end (8a) protruding from the top (1 a) of the pillar (1).
  • the operation can be partially carried out to obtain the network on a portion of the surface and can be repeated to obtain the network on the remaining portions.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Support Of Aerials (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Claims (10)

  1. Équipement de sécurité pour structures qui comprennent au moins un étage inférieur (PI) et au moins un étage supérieur (PS) supporté par une série de piliers (1) qui se déploient entre ledit étage inférieur (PI) et ledit étage supérieur (PS); équipement comprenant:
    - une série de tiges montantes (2) qui présentent une extrémité inférieure (2b) destinée à être fixée au-dessus d'un pilier (1) et une extrémité supérieure (2a);
    - au moins une corde horizontale (3) supportée par l'une des dites tiges montantes (2) en correspondance de son extrémité supérieure (2a) ;
    - un harnais (5) destiné à être mis par un opérateur (6);
    - un câble de sécurité (4) ayant un segment inférieur (4b) fixé au dit harnais et un segment supérieur (4a) accroché de manière coulissante à au moins l'un des cordes horizontales (3); équipement comprenant au moins un dispositif de serrage (7), positionné sur le sommet d'au moins l'une des dites tiges montantes (2), apte à serrer une portion de la corde horizontale (3) supportée par la tige (2) sur laquelle le dispositif de serrage (7) est positionné; étant prévu que ledit dispositif de serrage (7) soit un dispositif de serrage et de tensionnage (7) de la corde horizontale (3) qu'il supporte; ledit dispositif de serrage et de tensionnage (7) consistant d'un manchon embrevé sur la tige (2); équipement où:
    - ledit dispositif de serrage et tensionnage (7) consiste en un manchon (7) de section circulaire qui présente une extrémité inférieure (7a);
    - ladite tige (2) présente une extrémité supérieure (2a) ayant une bouche supérieure (2c) de section circulaire apte à loger le segment inférieur (7a) du dispositif de serrage et tensionnage (7) ;
    - ledit manchon (7) comprend une paire d'entailles longitudinales (7e), destinées à loger l'une des cordes horizontales (3) ;
    - sont compris des moyens de blocage (7c, 9) réalisés tant sur le segment d'extrémité inférieure (7a) du manchon (7), qu'en correspondance du segment d'extrémité supérieure (2a) de la tige (2) ; lesdits moyens (7c, 9) coopérant de manière réciproque dès que le manchon (7) est entièrement enfilé à l'intérieur de la tige (2) ;
    équipement caractérisé en ce qu'il comprend une douille (T) qui est destinée à être enfilée, du haut vers le bas, sur ledit manchon (7) et qui présente :
    - une paroi de sommet (T1), qui présente une face (T1 a) destinée à être tournée vers le manchon (7) lorsque la douille (T) est enfilée dans le manchon (7) ;
    - un perçage (T2) de section carrée réalisé centralement par rapport à ladite paroi de sommet (T1) ; ledit perçage (T2) étant apte à loger un pivot carré d'une clé dynamométrique ;
    - au moins une dent (T3) qui fait saillie inférieurement de ladite face (T1 a) et qui est enfilée à l'intérieur d'une entaille (7e) de la paire d'entailles (7e) lorsque la douille (T) est enfilée dans le manchon (7).
  2. Équipement selon la revendication 1, où ladite douille (T) présente un rebord latéral (T4) auquel est solidaire au moins une dent (T3) ; ledit rebord latéral (T4), lorsque la douille (T) est enfilée dans le manchon (7), circonscrit et entoure le segment de sommet du manchon (7).
  3. Équipement selon la revendication 1 ou 2, où ladite douille (T) comprend deux dents (T3), diamétralement opposées.
  4. Équipement selon les revendications 2 et 3, où ledit rebord latéral (T4) de la douille (T) présente une entaille (T5), perpendiculaire par rapport à sa paroi de sommet (T1), et à l'intérieur de laquelle est destiné à être logé l'ergot (9) lorsque la douille (T) est enfilée dans le manchon (7).
  5. Équipement selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits moyens (7c, 9) consistent en un profil denté (7c), réalisé sur la surface externe du segment d'extrémité inférieure (7a) du manchon (7) et d'un ergot (9), positionné en correspondance du segment d'extrémité supérieure (2a) de la tige (2) et dont la pointe est apte à s'enfiler à l'intérieur de l'une des dents du dit profil denté (7c), dès que le manchon (7) est entièrement enfilé à l'intérieur de la tige (2).
  6. Équipement selon la revendication 5, où ledit manchon (7) présente une extrémité supérieure (7b) qui lui autorise le couplage avec l'extrémité inférieure (7a) d'un manchon identique (7) ; étant prévu que ledit manchon (7) comprenne des moyens (7c, 9) réalisés sur la surface externe du segment d'extrémité inférieure (7a) du manchon (7) et en correspondance du segment d'extrémité supérieure (7b) du manchon (7), qui coopèrent dès que le manchon (7) est entièrement enfilé à l'intérieur d'un autre manchon (7) qui lui est identique.
  7. Équipement selon la revendication 6, où lesdits moyens (7c, 9) consistent en un profil denté (7c), réalisé sur la surface externe du segment d'extrémité inférieure (7a) du manchon (7) et d'un ergot (9), positionné en correspondance du segment d'extrémité supérieure (2a) du manchon (7) et dont la pointe est apte à s'enfiler à l'intérieur de l'une des dents du dit profil denté (7c), dès que le manchon (7) est entièrement enfilé à l'intérieur d'un autre manchon (7) qui lui est identique.
  8. Équipement selon l'une quelconque des revendications précédentes, comprenant au moins une douille (8) destinée à être fixée au-dessus du pilier (1) et qui présente une extrémité supérieure (8a) définissant une bouche (8b) où est enfilée l'extrémité inférieure (2b) d'une tige (2).
  9. Équipement selon la revendication 8, comprenant au moins un bouchon (81), ayant essentiellement une conformation en «T», qui présente une portion verticale (81 a), destinée à être enfilée exactement à l'intérieur de la douille (8) et une tête grossie (81 b) destinée à rester à l'extérieur de la douille (8), en appui sur la bouche (8b) de la douille (8) ; ledit bouchon (81) comprenant:
    - une portion verticale (81 a) apte à être enfilée entièrement et exactement à l'intérieur de la douille (8) en passant à travers la bouche (8b) de la douille (8);
    - une tête grossie (81 b), qui présente une surface inférieure de butée (81 c) qui va en battement, au moins partiellement, au-dessus de la bouche (8b) de la douille (8);
    - deux ailes (81 d), saillantes vers le bas de ladite tête grossie (81 b) et qui sont destinées à se positionner, lorsque le bouchon (81) est entièrement enfilé à l'intérieur de la douille (8), en assiette juxtaposée et rapprochée à l'extrémité supérieure (8a) de la douille (8) ; la hauteur (h) des dites ailes (81 d) étant identique à la hauteur (h) de l'extrémité supérieure (8a) de la douille (8), qui fait saillie du sommet (1 a) du pilier (1), lorsque la douille (8) est noyée à l'intérieur du pilier (1).
  10. Équipement selon l'une quelconque des revendications précédentes, où lesdites tiges montantes (2) ont une section quadrangulaire; ledit équipement comprenant une tige de raidissement (20) enfilée à l'extérieur d'une tige (2) correspondante.
EP14178659.0A 2013-08-02 2014-07-25 Équipement de sécurité antichute, en particulier pour réaliser des sols dans un logement résidentiel Not-in-force EP2832937B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000145A ITAN20130145A1 (it) 2013-08-02 2013-08-02 Attrezzatura di sicurezza anticaduta, in particolare per la realizzazione di solai di civile abitazione.

Publications (2)

Publication Number Publication Date
EP2832937A1 EP2832937A1 (fr) 2015-02-04
EP2832937B1 true EP2832937B1 (fr) 2016-03-16

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Application Number Title Priority Date Filing Date
EP14178659.0A Not-in-force EP2832937B1 (fr) 2013-08-02 2014-07-25 Équipement de sécurité antichute, en particulier pour réaliser des sols dans un logement résidentiel

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EP (1) EP2832937B1 (fr)
IT (1) ITAN20130145A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522472A (en) * 1994-11-03 1996-06-04 Shuman, Jr.; Jack W. Fall protection system for bridge construction
US6776398B1 (en) * 2003-01-28 2004-08-17 Strong-Way United Co., Ltd. Belt post structure
US20070176158A1 (en) * 2006-02-01 2007-08-02 Robinson Jeffery A Portable safety barrier
ITAN20110174A1 (it) * 2010-12-30 2012-07-01 Paolo Vaccarini Attrezzatura di sicurezza anticaduta, in particolare per la realizzazione di solai di civile abitazione.
US8708099B2 (en) * 2011-11-11 2014-04-29 Ez Roof Anchors, 7875819 Canada Inc. Safety anchoring device

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EP2832937A1 (fr) 2015-02-04

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