WO2012046049A2 - Rambarde de sécurité d'échafaudage et procédé d'assemblage - Google Patents

Rambarde de sécurité d'échafaudage et procédé d'assemblage Download PDF

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Publication number
WO2012046049A2
WO2012046049A2 PCT/GB2011/051896 GB2011051896W WO2012046049A2 WO 2012046049 A2 WO2012046049 A2 WO 2012046049A2 GB 2011051896 W GB2011051896 W GB 2011051896W WO 2012046049 A2 WO2012046049 A2 WO 2012046049A2
Authority
WO
WIPO (PCT)
Prior art keywords
panel
safety rail
scaffold
brackets
safety
Prior art date
Application number
PCT/GB2011/051896
Other languages
English (en)
Other versions
WO2012046049A3 (fr
Inventor
Mark Edward Bowman
Original Assignee
Steelhoard Limited
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 Steelhoard Limited filed Critical Steelhoard Limited
Priority to EP11782190.0A priority Critical patent/EP2625350A2/fr
Publication of WO2012046049A2 publication Critical patent/WO2012046049A2/fr
Publication of WO2012046049A3 publication Critical patent/WO2012046049A3/fr

Links

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
    • E04G5/00—Component parts or accessories for scaffolds
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/145—Toe boards therefor
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/147—Railings specially adapted for mounting prior to the mounting of the platform
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G2005/148—Railings latticed or netted

Definitions

  • the present invention relates to a safety rail for a scaffold and to a method of assembling a safety rail for a scaffold.
  • Scaffolding is used as a temporary structure to support personnel and/or materials during construction, for example, of a building.
  • the scaffold comprises a combination of tubes, couplers for joining together the tubes, and boards.
  • the tubes which are usually of metal, are attached together using the couplers to form a framework onto which the boards are secured to form platforms at vertically spaced apart levels, called lifts.
  • the horizontal extents between adjacent upright tubes are called bays.
  • the upright tubes are usually referred to as "standards” and the horizontal tubes are either referred to as "ledgers” if they are generally parallel to the structure (e.g. the building) or “transoms" if they are generally perpendicular to the structure.
  • Safety regulations require that at each level a safety rail, or guard rail, comprising at least two fixed, horizontally spaced tubes, is mounted on the uprights, to help prevent an operative from falling from the side of the scaffold.
  • a safety rail or guard rail, comprising at least two fixed, horizontally spaced tubes, is mounted on the uprights, to help prevent an operative from falling from the side of the scaffold.
  • Increasingly strict safety rules are insisting that a safety rail is put in place before an operative is allowed to mount the platform. This requires the rail to be installed from below i.e. the safety rail for the next level above must be installed from the current, lower level which has already been made safe, so that operatives are protected at all times.
  • Embodiments of the present invention aim to provide a safety rail for a scaffold, and a method of installing a safety rail, in which some or all of the aforementioned drawbacks are eliminated or substantially reduced.
  • a safety rail system for a scaffold comprising at least one safety panel and at least two mounting members for mounting the panel on a scaffold, each mounting member having a body portion, upper and lower panel brackets for engaging the panel and upper and lower scaffold tube brackets for releasable attachment to a scaffold tube.
  • the upper panel bracket preferably comprises a first peg portion attached to and extending substantially away from the body portion.
  • the first peg portion comprises an arm portion extending substantially away from the first peg portion for engaging an upper part of the panel.
  • the first peg portion may comprise a moveable gate portion for retaining an upper part of the panel.
  • the upper panel bracket may be shaped so as to engage the panel, and in one preferred arrangement the upper panel bracket and the panel itself have complementary engaging profiles.
  • the lower panel bracket comprises a second peg portion attached to and extending substantially away from the body portion.
  • the second peg portion may comprise a moveable latch portion for retaining a lower part of the panel.
  • the moveable latch may comprise a captive cotter.
  • At least one of the upper and lower scaffold tube brackets may comprise a collar member arranged for releasable
  • each, collar member may be arranged to be secured to a scaffold tube by a progressive friction engagement, such as a wedge passing through at least one aperture on the collar member.
  • the upper scaffold tube bracket is arranged in use for sliding engagement with a scaffold tube.
  • the panel preferably comprises a frame portion and a mesh portion .
  • the invention also includes a mounting member for a scaffold safety rail, the mounting member comprising a body portion, spaced apart upper and lower panel brackets for engaging respectively upper and lower regions of a safety panel and spaced apart upper and lower scaffold tube brackets for releasable attachment to a scaffold tube.
  • the invention provides a method of assembling a scaffold safety rail, the method comprising: attaching a safety rail mounting member to each of two upright scaffold tubes, sliding the mounting members upwards on the tubes to a predetermined height and engaging panel brackets of the mounting members with a safety panel to form the safety rail.
  • the method may comprise engaging upper panel brackets of the mounting members with an upper portion of the panel, and then engaging lower panel brackets with a lower portion of the panel .
  • the method comprises attaching an upper scaffold tube bracket of each of the mounting members to a respective tube, then sliding the mounting members upwards on the tubes, then attaching lower scaffold tube brackets of the mounting members to the respective tubes, then engaging panel brackets of the mounting members with a safety panel to form the safety rail.
  • the invention may comprise any combination of the features or limitations referred to herein, except a combination of such features as are mutually exclusive.
  • Figure 1 shows schematically a mounting member for a safety rail, according to an embodiment of the present invention
  • FIG 2 shows schematically in front view a safety rail including overlapping safety panels and a mounting member, secured to an upright scaffold tube, according to an embodiment of the present inventions-
  • Figure 3 shows schematically the safety rail of Figure 2 in side view;
  • Figure 4 shows schematically the safety rail of Figures 2 and 3 in plan;
  • Figures 5a to 5e show schematically a sequence of steps during assembly of the safety rail of Figures 2 to 4 , by an operative;
  • Figure 6 shows an alternative embodiment of mounting member according to the invention
  • Figure 7 shows, in plan view, an upper portion of a further alternative embodiment of mounting member, according to the invention
  • FIG 1 this shows generally at 10 an upright steel scaffold tube such as is used as part of a larger scaffolding structure (not shown) .
  • an upright steel scaffold tube such as is used as part of a larger scaffolding structure (not shown) .
  • coupling devices to form a framework which can support working platforms for operatives to stand on whilst undertaking construction or maintenance of property or machinery, for example.
  • the mounting member 12 for a safety rail.
  • the mounting member comprises a main body 14, having upper 14a and lower 14b ends, of box-section steel or aluminium and upper and lower steel or aluminium tube brackets, 16a and 16b respectively, for securing the mounting member 12 to the tube 10.
  • the brackets 16a and 16b are simple steel or aluminium collar fittings, welded or otherwise fixed to the body 14, which are shaped to receive the tube 10 and which retain the tube by driving wedge members 18 through holes in the ends of the brackets. Once driven, the wedge members are then held in place by friction.
  • a top panel bracket 20 for retaining the top of a safety panel (not shown) , is welded to the body 14.
  • the top panel bracket 20 comprises a first, horizontal peg portion 20a which extends away from the body 14, and therefore from the tube 10, substantially at right angles thereto. The peg portion 20a then bends substantially through ninety degrees downwards to form an arm portion 20b.
  • a gate portion 20c is pivotally mounted at the region of the bend.
  • a lower panel bracket 22, for retaining the bottom of a safety panel (not shown) is welded to the body 14.
  • the lower panel bracket comprises a horizontal peg 22a which extends substantially at right angles away from the body 14.
  • a captive cotter 22b pivotally engages with the peg.
  • the captive cotter 22b is able to slide up and down on the peg, generally vertically, and projects above and below the peg 22a in a rest position. At the limit of its upward movement it may also pivot to a substantially horizontal orientation (not shown) whilst remaining always connected to the peg 22a.
  • the captive cotter 22b rests horizontally until it is raised manually to a vertical orientation.
  • the lower panel bracket 22 also comprises a substantially horizontal rest portion 22c which extends outwardly from the body portion 14 beneath the peg 22a and which is arranged to support a panel in use, as will be described below.
  • the collar shaped tube brackets 16a and 16b face away from each other for ease of mounting.
  • the brackets 16a and 16b may be arranged to face the same way in applications where this is more convenient.
  • FIG. 1 A safety panel (not shown in Figure 1) can then be mounted on the mounting member, as will now be described with reference to Figures 2 to 4.
  • Figures 2 to 4 show schematically the mounting member 12 of Figure 1, attached to the scaffold tube 10.
  • FIG. 2 to 4 show overlapping rectangular safety panels 24 mounted on the mounting member 12.
  • Each panel 24 comprises a tubular aluminium frame 26, a mesh 28 of steel rods welded thereto, and an aluminium toe board 28a at the lower end of the panel.
  • the panels are held securely on the mounting member 10 at their upper and lower edges respectively by the panel brackets 20 and 22.
  • the upper edge of the panel frame 26 is located under the upper panel bracket 20, within the arm portion 20b and beyond the pivoting gate portion 20c. Then, the lower edge of the panel 24 is advanced towards the lower panel bracket 22.
  • the captive cotter 22b is firstly slid upwards and then, when it is able to do so, is pivoted into a substantially horizontal configuration where it rests. Now the captive cotter 22b and peg portion 22a can then be slid though rods of the mesh 28 so that the mesh 28 comes to be supported on the peg 22a and/or the rest portion 22c.
  • the cotter 22b is then pivoted to a substantially vertical configuration and then lowered to the position shown in Figures 2 and 3.
  • the safety panel 24 is then securely held on the mounting member 12 where it can move neither up nor down, nor sideways, nor away from the mounting member
  • the upper and lower panel brackets 20 and 22 are sufficiently large to accommodate a second, overlapping panel 24, as shown in Figures 2 to 4, which is mounted in the same way.
  • a mounting member is mounted on each of a plurality of upright scaffold tubes then a plurality of safety panels, overlapping as necessary, can be put together to form a substantially continuous safety rail system extending horizontally along a scaffold. Since the panels can be made to overlap to variable degrees the system is inherently flexible, and different spacing between upright tubes can readily be accommodated without the need to provide panels of different lengths.
  • the mounting members 12 can be attached to the tubes 10 at their upper ends (i.e. upper mounting brackets 16a) before being slid upwards to a desired height, corresponding to a maximum reach of an operative.
  • upper mounting brackets 16a When sliding the mounting members upwards they must be held at an angle to the upright tubes until the lower ends of the mounting members clear any nearby horizontal scaffold tubes, as will be described below with reference to Figures 5a to 5e. Then the lower brackets 16b can be secured to the tubes 10.
  • the panels 24 can be lifted into position, locating firstly under the upper panel brackets 20 and then onto the lower panel brackets 22, and the safety rail can be completed simply and with minimum effort at a height above the level at which the operative is currently standing.
  • the next platform above can now be constructed, using supports such as planks for example, and the operatives can ascend to the new level, with a safety rail already in place. All that remains to be done when standing at the next level is tightening of the wedge 18 securing the upper bracket 16a.
  • Figures 5a to 5e show schematically the assembly of a safety rail according to the embodiment described above.
  • this shows an operative 30 attaching a mounting member to each of four upright scaffold tubes 10a, 10b, 10c, and lOd.
  • horizontal ledger tubes lOf and horizontal transom tubes lOg are also shown.
  • the upper tube bracket 16a is located on the tube 10.
  • the wedge 18 is loosely pushed through the holes in the bracket 16a.
  • the mounting member In the third stage the mounting member is slid up the tube 10 above the head of the operative 30, whilst holding the mounting member at an angle to the upright until its lower end has cleared the ledger tube lOf.
  • the operative drives the wedge through the holes in the lower tube bracket 16b, to hold the mounting member securely on the tube 10.
  • a pair of operatives lifts the panels 24 into position.
  • Each panel 24 is lifted through the legers and transoms, and slid upwards against the body portions 14 of the mounting members 12.
  • the upper edge is firstly located on the upper panel bracket 20, under the peg portion 20a, beyond the arm 20b and gate 20c.
  • the lower edge of the panel 24 is located on the lower panel bracket 22, manipulating the captive cotter 22b as described above, so that the weight of the panel 24 comes to be supported on the peg 22a and/or rest portion 22c.
  • the panels are made to overlap so that adjacent panels can share a common mounting member as necessary.
  • Figure 5e shows operatives 30 standing on the platform 34 and beginning the installation of the safety rail for the next level up, in the same manner as described above.
  • FIG. 6 shows an alternative embodiment of mounting member 12 in which the upper and lower panel brackets, 20 and 22 respectively, have a different configuration.
  • the upper panel bracket 20 comprises a peg 40 having a profile which is substantially M-shaped and is arranged to receive the upper frame portions (not shown) of two overlapping panels in a snug fit.
  • the lower panel bracket 22 has a rest portion 22c, as in the previous embodiment, but in this case the portion 22c has a pair of raised bumps 42 which divide the portion 22c into two discrete areas for supporting the two separate, overlapping panels (not shown) .
  • the details of the upper and lower panel brackets 20 and 22 may differ from those shown but are preferably adapted to accommodate the overlapping panels. In one such variation
  • At least the upper panel bracket 20 is provided with a profile that is arranged to engage with a complementary profile on an upper portion of a panel, so that the panel may be retained securely on the bracket. Such arrangements help to prevent movement of the panel, particularly where there is only a single panel.
  • Figure 7 shows, in plan view, an upper part of a further embodiment of mounting member 12.
  • the mounting member 12 of Figure 7 is similar to that of the Figure 6, though it could be of the type described with reference to Figure 1.
  • the embodiment of Figure 7 differs from the previously described embodiment in that short spacers 50 of rectangular tube steel are provided between the body 14 and the upper and lower tube brackets 16a and 16b (only the upper end is shown in Figure 7) .
  • the short spacer tubes 50 serve to provide an increased gap between the body 14 of the mounting member and an adjacent scaffold tube (represented by broken lines in Figure 7). This allows the mounting member to be mounted on the upright tubes of so called system-type scaffolds, which sometimes include permanent fixtures at spaced nodes for the attachment of other tubes.
  • the short spacers 50 are only used at the location of the tube brackets and are dimensioned to provide suitable clearance from any system scaffold fixture across the span of the mounting member.
  • the mounting member 12 of Figure 7 also differs from the previously described embodiments in that the scaffold tube brackets 16a and 16b are oriented differently with respect to the body portion 14. In particular the tube brackets face away from the panel brackets and therefore from an operative during installation. In this configuration the mounting member may be easier to manipulate.
  • the mounting member and panel have been described as of aluminium, the skilled person will realise that they may be made of a number of different materials, including metals and metal alloys.
  • the means employed to mount the panels on the panel brackets need not be limited to the specific devices described above, and indeed a panel comprising cladding, or a plurality of parallel tubes or rods, with or without a frame, or a substantially continuous sheet of material, such as of metal or plastics, may be utilised as part of the safety rail, provided that the panel can engage the mounting member broadly as described above, for example by having a portion, such as the peg 22a or captive cotter 22b pass through a mesh or through a pre- formed aperture.
  • the panels are typically between 950mm and 1050mm, and more preferably 1000mm high, with the toe-board being preferably 150mm high and the mesh (if mesh is used) being 50mm x 50mm.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

L'invention décrit une rambarde de sécurité d'échafaudage comprenant au moins un panneau de sécurité et au moins deux éléments de montage pour monter le panneau sur un échafaudage, chaque élément de montage (12) comportant une partie de corps (14), espacée et séparée de supports (20, 22) supérieur et inférieur de panneau pour entrer en prise respectivement avec les zones supérieure et inférieure du panneau, et des supports (16a, 16b) de tube d'échafaudage, espacés, supérieur et inférieur, pour se fixer de façon réversible à un tube (10) d'échafaudage. Après que les éléments de montage ont été fixés aux tubes de cette façon, on peut hisser les panneaux en position, en les plaçant d'abord sous les supports supérieurs (20) de panneau et ensuite sur les supports inférieurs (22) de panneau, et on peut achever la rambarde de sécurité simplement et avec le minimum d'effort à une hauteur au-dessus du niveau auquel l'ouvrier se tient actuellement. On peut maintenant construire au-dessus la plateforme suivante, au moyen de supports tels que par exemple des planches et les ouvriers peuvent monter au nouveau niveau avec une rambarde de sécurité déjà en place. Tout ce qui reste à faire quand on se tient au niveau suivant est de serrer le coin (18) qui fixe solidement le support supérieur (16a).
PCT/GB2011/051896 2010-10-06 2011-10-05 Rambarde de sécurité d'échafaudage et procédé d'assemblage WO2012046049A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11782190.0A EP2625350A2 (fr) 2010-10-06 2011-10-05 Rambarde de sécurité d'échafaudage et procédé d'assemblage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1016793.0A GB201016793D0 (en) 2010-10-06 2010-10-06 Scaffold safety rail and method of assembly
GB1016793.0 2010-10-06

Publications (2)

Publication Number Publication Date
WO2012046049A2 true WO2012046049A2 (fr) 2012-04-12
WO2012046049A3 WO2012046049A3 (fr) 2012-06-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/051896 WO2012046049A2 (fr) 2010-10-06 2011-10-05 Rambarde de sécurité d'échafaudage et procédé d'assemblage

Country Status (3)

Country Link
EP (1) EP2625350A2 (fr)
GB (2) GB201016793D0 (fr)
WO (1) WO2012046049A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021097762A1 (fr) * 2019-11-20 2021-05-27 苏思月 Structure de liaison de protection omnidirectionnelle pour filet de protection métallique d'une plate-forme de protection sécurisée d'opération de levage attachée
GB2601292A (en) * 2020-10-14 2022-06-01 Morris White Stephen Scaffolding tool
EP4353924A1 (fr) * 2022-10-13 2024-04-17 Peri Se Dispositif de fixation pour fixer un élément d'échafaudage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223831A1 (de) * 2013-11-21 2015-05-21 Wilhelm Layher Verwaltungs-Gmbh Sicherungselement
GB2539375A (en) * 2015-04-24 2016-12-21 Src Consultancy Ltd Scaffold safety apparatus
GB201612364D0 (en) * 2016-07-15 2016-08-31 Simcol Holdings Ltd Connector
WO2019204621A1 (fr) * 2018-04-20 2019-10-24 Deltak Manufacturing, Inc. Ensemble rebord protecteur de grille d'échafaudage destiné à être utilisé sur une grille d'échafaudage

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JPH08218616A (ja) * 1995-02-08 1996-08-27 Asahi Sutetsupu Kk 安全金網用支持装置
US6061341A (en) * 1997-12-16 2000-05-09 Telefonaktiebolaget Lm Ericsson (Publ) Use of transmission control protocol proxy within packet data service transmissions in a mobile network
JP2004316227A (ja) * 2003-04-16 2004-11-11 Nikko Co Ltd 建築用等の枠組足場の手摺
EP2096236A2 (fr) * 2007-10-24 2009-09-02 Safety Plast S.r.l. Parapet modulaire fournissant une protection temporaire sur des structures

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US6062341A (en) * 1998-09-11 2000-05-16 Safway Steel Products Inc. Guard rail stud adapter
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08218616A (ja) * 1995-02-08 1996-08-27 Asahi Sutetsupu Kk 安全金網用支持装置
US6061341A (en) * 1997-12-16 2000-05-09 Telefonaktiebolaget Lm Ericsson (Publ) Use of transmission control protocol proxy within packet data service transmissions in a mobile network
JP2004316227A (ja) * 2003-04-16 2004-11-11 Nikko Co Ltd 建築用等の枠組足場の手摺
EP2096236A2 (fr) * 2007-10-24 2009-09-02 Safety Plast S.r.l. Parapet modulaire fournissant une protection temporaire sur des structures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021097762A1 (fr) * 2019-11-20 2021-05-27 苏思月 Structure de liaison de protection omnidirectionnelle pour filet de protection métallique d'une plate-forme de protection sécurisée d'opération de levage attachée
GB2601292A (en) * 2020-10-14 2022-06-01 Morris White Stephen Scaffolding tool
EP4353924A1 (fr) * 2022-10-13 2024-04-17 Peri Se Dispositif de fixation pour fixer un élément d'échafaudage

Also Published As

Publication number Publication date
GB2484395B (en) 2013-01-02
GB201016793D0 (en) 2010-11-17
WO2012046049A3 (fr) 2012-06-07
GB2484395A (en) 2012-04-11
GB201117103D0 (en) 2011-11-16
EP2625350A2 (fr) 2013-08-14

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