EP2812513A1 - Plateau pou échafaudage et procédé pour son adaptation - Google Patents

Plateau pou échafaudage et procédé pour son adaptation

Info

Publication number
EP2812513A1
EP2812513A1 EP13706161.0A EP13706161A EP2812513A1 EP 2812513 A1 EP2812513 A1 EP 2812513A1 EP 13706161 A EP13706161 A EP 13706161A EP 2812513 A1 EP2812513 A1 EP 2812513A1
Authority
EP
European Patent Office
Prior art keywords
deck
plate member
end part
fibres
top side
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.)
Withdrawn
Application number
EP13706161.0A
Other languages
German (de)
English (en)
Inventor
Carsten Lau KJÆRGAARD
Per Mose JAKOBSEN
Carl Bagger ØSTERVIG
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.)
NORDIC PLATFORM P/S
Original Assignee
Nordic Platform P/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 Nordic Platform P/S filed Critical Nordic Platform P/S
Publication of EP2812513A1 publication Critical patent/EP2812513A1/fr
Withdrawn legal-status Critical Current

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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/153—Platforms made of plastics, with or without reinforcement

Definitions

  • the present invention concerns a scaffold with a deck and a method for adapting a deck to a scaffold, wherein the scaffold includes scaffolding frames as well as decks, wherein the scaffolding frames are typically made of steel and wherein the deck is made with fixing means for fixing a deck to the frames, wherein the fixing means at least include cutouts and/or projections, wherein at least part of the deck is made of a fibre composite material and includes a at least a plate member with a top side, a bottom side, two longitudinal sides and two transverse ends.
  • the perforated platforms are typically used on so-called bricklayer's scaffolds.
  • the platforms are frequently made of wood or metal and with an open structure on the surface such that dust, lost mortar and the like largely fall through the perforated platform and therefore do not constitute any safety hazard due to weight and with regard to fall accidents.
  • the platforms and the scaffolding as such are elevated as the bricklaying proceeds, and usually no work is done under the platforms why is it acceptable with an open structure on the surface.
  • Platforms of wood have the disadvantage that they are heavy.
  • a platform with a width of about 50 cm and a length of about 220 cm typically weighs 37 kg in dry condition, which is often not the case as wood easily absorbs water.
  • scaffold decks also called decks or planks which basically are plates forming a solid bottom on a work platform or on a scaffold of the type known from construction work, where e.g. a multi-storey building can be entirely covered by scaffolding at many storeys on one or more facades.
  • Scaffolding is usually put up with several deck layers where normally there are about 200 cm between respective decks, and where individual sections have lengths of typically 175, 250 or 300 cm, but other lengths are found on the market as well.
  • the invention concerns a scaffold with a deck, wherein the deck is made with fixing means for fixing a deck, wherein the fixing means at least include cutouts and/or projections, and wherein at least part of the deck is made of a fibre composite material.
  • a deck further includes two end parts, each with a top side and a bottom side wherein the fixing means are arranged on or in the end parts, and that the plate member is entirely or partially made by pultrusion, having a weight between 8 and 14 kg/m 2 or less, alternatively with a weight between 9 and 1 1 kg/m 2 , while at the same time fitting with current scaffolding frames.
  • fibre composite By using fibre composite and in particular pultrusion, an exceptional good uniformity is achieved in the product and fibres can be positioned accurately and in very controlled amount/strength/type at specially selected positions in the product.
  • a deck for a scaffold typically has a width of about 30 or 60 cm, and lengths of about 175, 250 or 300 cm, and none of these different sizes have a weight more that 8 to 14 kg/m 2 , or even less, when made according to the invention.
  • the plate member can advantageously be made of fibre composite, wherein the fibres are selected among glass fibres, carbon fibres, aramide fibres, polyethylene fibres, steel fibres, other plastic fibres or natural fibres, such as plant fibres or combinations of the mentioned types of fibres, and wherein the fibres are embedded in a matrix of a suitable type of plastic, e.g. polypropylene, polyester, vinyl ester, epoxy, polyurethane, or other suited type of plastic.
  • a suitable type of plastic e.g. polypropylene, polyester, vinyl ester, epoxy, polyurethane, or other suited type of plastic.
  • Providing a skidproof deck can be achieved by providing the outer layer of the surface of the deck with special friction means.
  • friction means can be provided during or after the pultrusion process itself and may, for example, include application of a layer of a suitable granulate or performing machining of the surface of the deck such that a certain roughness is produced.
  • a scaffold with a deck according to the invention can advantageously be provided with a fibre content of the plate member corresponding to a weight percentage between 40 and 80, for example between 50 and 75, such as between 60 and 70 by glass fibres, for example.
  • a fibre content of the plate member corresponding to a weight percentage between 40 and 80, for example between 50 and 75, such as between 60 and 70 by glass fibres, for example.
  • the weight can be optimised and at the same time the strength or load capacity is optimised.
  • fibres of glass can be used in some areas of a plate member while in other areas fibres with higher rigidity can be used, e.g. carbon fibres or steel fibres.
  • steel fibres which in principle are thin strands of a suitable steel alloy, are particularly suited for the outermost surface of the top side of a deck for a scaffold as there is a very high wearability in such a surface, while e.g.
  • carbon fibres are much better suited for being disposed in parts of the pultruded plate member in which tension is absorbed for the greater part, typically corresponding to the lowermost parts of a deck.
  • Various types of fibres have different properties and applications why careful planning of the position of respective fibres can result in distinctive and optimal properties.
  • the plate member includes a top side and a bottom side, where between top side and bottom side a number of longitudinal stringers extend by which a spacing is maintained between top side and bottom side.
  • a kind of sandwich construction wherein the spacing between top side and bottom side provides increased rigidity.
  • the top side ensures disposition of the stringers and in principle absorbs compressive forces whereas the bottom side absorbs tensile forces together with the stringers, which can be regarded as beams partly absorbing compressive forces and partly tensile forces.
  • a particularly preferred variant of a scaffold with a deck according to the invention is that the plate member includes at least a partially open bottom side divided into a number of longitudinal faces, wherein the longitudinal faces are coherent with one or more of the longitudinal stringers.
  • the bottom side may thus be constituted by a surface for each of the mentioned longitudinal stringers.
  • the top side can e.g. be a plane and closed surface, where from the back side of the surface a number of stringers project and where each of these stringers in principle is similar to the web in a known I- beam.
  • a deck thus includes a plurality of I-beams, the top of the I-beams being constituted by the top side of the plate member whereas the bottom side of the plate member is constituted by the lower flanges of the I-beams.
  • top side and bottom side both are closed and that a number of stringers or ribs extend between the two sides so that there is produced a closed profile with inner profile walls.
  • the top side is closed while the bottom side is partly open as a surface at the bottom side is fixed to several of the mentioned longitudinal stringers or inner profile walls.
  • the top side as well as the bottom side - irrespective of their general design - can be provided with apertures such that dust, mortar remains and other dirt can fall through such a plate member.
  • the deck can include two end parts wherein the two end parts are selected among a number of differently designed end parts with specific properties.
  • Such end parts for a scaffold with a deck according to the invention can be made of metal, fibre composite, plastic or combinations thereof, wherein the end parts are moulded and/or machined to the desired shape.
  • the end parts include the said fixing means by which the deck is fixed to the scaffolding frames, and the fixing means may include hooks, cutouts in the bottom side or blocks mounted at the bottom side, or any other kind of fixing means known from scaffolding. In this way it is possible to perform a selection of end parts with a specific design according to the type of scaffold for which the deck is to be used. Furthermore, end parts with cutouts or with blocks intended to ensure that the deck/platform lies firm on a pipe as known from the so- called bricklayer's scaffolds can be selected.
  • the end parts can be fixed to a plate member by gluing, welding or they can be fixed by mechanical securing.
  • a mechanical securing can be effected, for example, by one or more pins, rivets, bolts or screws, or by one or more spring-biased locking pawls on the end parts, wherein the end parts interact with locking means adapted therefor on a plate member.
  • An end part may advantageously be designed with one or more projecting fingers which are dimensioned to be passed into the end of the plate member, where fixing between end parts and plate part occurs by fixing between side faces of the plate part and/or stringers/inner profile walls and the projecting finger/fingers on an end part.
  • the description of figures will show examples of mechanical fixing with a pin. Fixing may, as mentioned, also be effected by gluing or by another suitable process that renders separation of end part and plate member impossible at a later time.
  • an end part is provided with a spring-biased locking pawl which by joining with a plate member engages corresponding locking means adapted for the purpose. It may e.g. be a recess or other kind of cutout at either the top side, the bottom side or the longitudinal flanges between top side and bottom side of a plate member.
  • the end part may advantageously be arranged with its top side at level with the top side of the plate member and where the top side of the end part includes anti-skid means.
  • the end part can hereby constitute part of the surface of the deck itself without risking fall accidents as the two parts are right at the same level, and thus with a surface preventing a user from skidding.
  • Prior art solutions in the market describe several examples showing a difference in level at the transition between the deck itself and the end part, and typically also an edge, a surface or similar with a smooth surface.
  • This problem is solved by the invention as the two parts are at the same level and as anti-skid means are provided at the top side of the end part in the form of a friction surface.
  • This may e.g. be a coating applied after production, but in a preferred variant it is a rough surface established during or in connection with the making of the end part itself.
  • a deck for a scaffold according to the invention may furthermore include that the end parts are equipped with one or more sets of through-going apertures from the top side of the end part in direction towards the bottom side of the end part, for securing the deck to the scaffolding frames.
  • These through-going apertures may advantageously be used for mounting a wire, steel wire, cable tie or similar by which a deck can be secured to a scaffolding frame such that it cannot be lifted, alternatively be entirely detached and removed by wind gusts.
  • Such a through-going aperture will typically be with a diameter of 3, 4, 5 or 6 mm, but may be greater or lesser according to need.
  • the apertures do not need to be circular which, however, appears to be most expedient.
  • each single deck/end part By securing each single deck/end part in this way, - preferably at both ends and at either side of the end part - there is achieved increased certainty that a deck for a scaffold will not cause an accident in use due to faulty disposition and due to wind. Moreover, it is prevented that a deck can be blown off completely and down onto e.g. a pedestrian or a road user.
  • a deck for a scaffold includes that at least one through-going hole is arranged in the end part for coupling to a hoisting rope or similar.
  • a through-going hole is arranged in the end part for coupling to a hoisting rope or similar.
  • the plate member can advantageously be provided with at least one marking for adaptation of the length of the plate member and, for example, with several sets of locking means for interacting engagement by one or more locking pawls on an end part.
  • a scaffold with a deck according to the invention may include a plate member where the plate member is built up with a top side and a bottom side, where between the sides there is provided a foamed plastic material, e.g. foamed PVC, polyurethane, or another plastic type suited for foaming.
  • foamed plastic material e.g. foamed PVC, polyurethane, or another plastic type suited for foaming.
  • a plate member with a foam core can be provided with an end part in the same way as indicated above, and it will furthermore be possible to fill some or all the cavities present in a plate member with longitudinal flanges with a foam material as mentioned above.
  • the invention also concerns a method for adapting a deck to a scaffold, wherein the length and/or end parts are adapted for a specific type of scaffold
  • the method includes at least three of the following four steps:
  • Figs. 1-7 shows a detail of a plate member and examples of fixing means on an end part for a deck for a scaffold
  • Fig. 8 shows an example of a typical cross-section of a plate member
  • Fig. 9 shows a deck/platform with fixing means at the bottom side
  • Fig. 10 shows a detail of a deck with end part provided with skidproofing and at level with the top side of the deck;
  • Fig. 1 1 shows an end part with skidproofing.
  • Fig. 1 appears a detail of a deck in unassembled condition.
  • the plate member 2 includes a top side 3 with a non-skid coating 4, a bottom side 5, two longitudinal sides 6 and two transverse ends 7 of which only one is seen. Between the top side 3 and the bottom side 5 are arranged a number of longitudinal stringers 8 which also can be termed inner profile walls. Transversely of the plate member 2 and in parallel with the transverse end is seen a through-going recess 9 adapted for receiving a cylindrical pin 10. Furthermore, in Fig. 1 is seen an end part 1 1 with fixing means 12 for joining or fixing to a not shown frame part on a not shown scaffold.
  • the end part 11 further includes a number of fingers 13 which are adapted to be passed into the longitudinal spaces formed by the top side 3, the bottom side 5 and the longitudinal stringers 8.
  • the end part 1 1 is also made with a transversal through-going cutout 9 for receiving a cylindrical pin 10.
  • the shape of the cylindrical pin 10 may readily be changed, only requiring change of the cutout 9 in the plate member 2 and change of the end part 1 1 as well such that cutout 9 and pin 10 fit together.
  • the pin 10 may, however, also be replaced by other suitable locking means, e.g. bolts, screws, rivets, spring-biased locking pawls, glue, welds or other mechanical or chemical methods of joining.
  • Fig. 2 shows the same as in Fig. 1, but with the difference that the fixing means 12 do not extend along the entire transverse end 14 on the end part 1 1. Furthermore, there is the difference that an edged pin 15 and an edged cutout 9 for receiving the edged pin 15 are shown.
  • Fig. 3 shows a variant with fixing means 12 that e.g. can be moulded in plastic or fibre composite as well as the end part 1 1.
  • the fixing means can also be made of other types of material, including metal.
  • the fixing means 12 can be mounted to the end part 11 after making, but may also be an integrated part of the end part 11. The same goes for the variants shown in Figs. 4, 5 and 6.
  • Fig. 7 is seen a variant of an end part 1 1 where the fixing means 12 are constituted by a transverse recess at the bottom side of the end part.
  • Such a solution can e.g. be used on perforated platforms for a bricklayer's scaffold.
  • Fig. 8 shows a cross-section of a variant of a plate member 2.
  • the plate member 2 has a closed top side 3 and an open bottom side 5 where on each of the longitudinal stringers 8 there is arranged a narrow strip bottom side 5.
  • the plate member 2 thus appears as a plurality of juxtaposed I-beams constituted by the stringers 8 and the top side and the narrow bottom side strips 5, respectively.
  • the bottom side 5 is therefore open, appearing with a number of slots 16.
  • Fig. 9 appears a deck 1 with a cross-section as also shown in Fig. 8, where at the bottom side 5 there are arranged fixing means in the form of blocks 17 having the purpose of securing the deck 1 on a scaffold.
  • the blocks 17 can be glued or in other ways joined with the bottom side 5 or with the longitudinal stringers 8 between the top side 3 and the bottom side 5.
  • end parts 1 1 which are pushed in between the longitudinal stringers 8 and project relative to the bottom side 5 in the mentioned slots 16.
  • An alternative end part 1 1 can be fixed to the plate member 2 by various suitable means, they be permanent fixations by gluing or welding, or fixations which can be undone and reapplied again and again if so desired. There may e.g. be used pins 10, 14 as shown in Figures 1 to 7.
  • Fig. 10 appears a detail of a deck 1 where on the end part 1 1 is arranged a skidproofing 18, in this case established by providing the surface with a chattered pattern. Furthermore, it appears in Fig. 10 that the top side 3 on the plate member 2 is at level with the top side 19 of the end part. At the top side 3 of the plate member 2 and at the sides thereof appear rivets 20 used for fixing the end part 1 1 to the plate member 2. Transversely through the end part 11 at either side are arranged two through-going apertures 21 extending from the top side 19 to the bottom side 22 on the end part 1 1. Furthermore, two hoisting eyelets 24 are seen in the end part 1 1.
  • Fig. 1 1 shows part of an end part 1 1 with skidproofing 18 and with through-going apertures 21 and hoisting eyelets 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

La présente invention concerne un échafaudage doté d'un plateau et un procédé permettant d'adapter un plateau à un échafaudage, l'échafaudage comprenant des châssis d'échafaudage, généralement fabriqués en acier, ainsi que des plateaux dotés de moyens de fixation permettant la fixation aux châssis, les moyens de fixation comprenant au moins des découpes et/ou des saillies, au moins une partie du plateau étant fabriquée dans un matériau composite en fibre et comprenant au moins un élément de plaque doté d'une face supérieure, d'une face inférieure, de deux faces longitudinales et de deux extrémités transversales. Un plateau selon la présente invention comprend, en outre, deux parties d'extrémité, les moyens de fixation étant disposés sur ou dans les parties d'extrémité, et l'élément de plaque étant entièrement ou partiellement fabriqué par pultrusion, présentant un poids compris entre 8 et 14 kg/m2 ou moins, et s'insérant dans le même temps dans des châssis d'échafaudage courants.
EP13706161.0A 2012-02-06 2013-02-06 Plateau pou échafaudage et procédé pour son adaptation Withdrawn EP2812513A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201270058 2012-02-06
PCT/DK2013/050031 WO2013117196A1 (fr) 2012-02-06 2013-02-06 Plateau pou échafaudage et procédé pour son adaptation

Publications (1)

Publication Number Publication Date
EP2812513A1 true EP2812513A1 (fr) 2014-12-17

Family

ID=47750376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13706161.0A Withdrawn EP2812513A1 (fr) 2012-02-06 2013-02-06 Plateau pou échafaudage et procédé pour son adaptation

Country Status (2)

Country Link
EP (1) EP2812513A1 (fr)
WO (1) WO2013117196A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI11281U1 (fi) * 2016-02-24 2016-06-13 Erik Ahto Oy Moduulirakennusteline
DK179666B1 (da) * 2016-10-14 2019-03-14 Nordic Platform P/S Rørforankring for forankring af stillads til en facade eller til-svarende fast bygningsdel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3639697A1 (de) * 1986-11-20 1988-06-01 Gerhard Grund Geruest, insbesondere baugeruest
US5775463A (en) * 1996-07-15 1998-07-07 Alumax Extrusions, Inc. Toeboard system for a deckplate
US5882136A (en) * 1997-07-18 1999-03-16 Safway Steel Products, Inc. End cap system for scaffolding planks
GB9825958D0 (en) * 1998-11-26 1999-01-20 Smith James L Load-bearing structures
EP1362966B1 (fr) * 2002-05-15 2008-10-22 Hussor S.A. Panneau composite pultrudé
US20070289813A1 (en) * 2006-06-07 2007-12-20 Bothwell Timothy B Scaffold plank with end connector and method of making the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013117196A1 *

Also Published As

Publication number Publication date
WO2013117196A1 (fr) 2013-08-15

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