EP1921222A1 - Metallgerüstsystem - Google Patents

Metallgerüstsystem Download PDF

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Publication number
EP1921222A1
EP1921222A1 EP07120086A EP07120086A EP1921222A1 EP 1921222 A1 EP1921222 A1 EP 1921222A1 EP 07120086 A EP07120086 A EP 07120086A EP 07120086 A EP07120086 A EP 07120086A EP 1921222 A1 EP1921222 A1 EP 1921222A1
Authority
EP
European Patent Office
Prior art keywords
welded
tubular
scaffolding system
ring
molds
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.)
Granted
Application number
EP07120086A
Other languages
English (en)
French (fr)
Other versions
EP1921222B1 (de
Inventor
Eric Limasset
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.)
Layher Sas
Original Assignee
Layher Sas
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Publication date
Application filed by Layher Sas filed Critical Layher Sas
Publication of EP1921222A1 publication Critical patent/EP1921222A1/de
Application granted granted Critical
Publication of EP1921222B1 publication Critical patent/EP1921222B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/301—Scaffolding bars or members with non-detachably fixed coupling elements for connecting bars or members which are parallel or in end-to-end relation
    • 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
    • E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
    • E04G1/04—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section
    • E04G1/06—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section comprising members with rod-like or tubular portions fitting together end to end, with or without separate connecting pieces
    • 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
    • E04G1/152—Platforms made of metal or with metal-supporting frame
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/20—Stiff scaffolding clamps for connecting scaffold members of common shape for ends of members only, e.g. for connecting members in end-to-end relation
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/24—Couplings involving arrangements covered by more than one of the subgroups E04G7/08, E04G7/12, E04G7/20, E04G7/22

Definitions

  • the present invention relates to the field of removable scaffolding, which is used in particular in the building to provide floor areas in height on which it is possible to move and work.
  • the invention relates to a metal scaffolding system consisting of vertical tubular uprights interconnected by horizontal moldings, diagonal spacers and beams. These last support the floor elements.
  • a coupling system comprising transverse perforated rings, secured at regular intervals tubular uprights cooperating with connecting members with integral keys of the molds and other transverse beams.
  • the connecting member comprises a tubular portion forming a housing of a movable key along the axis thereof. A slot is formed across this tubular portion.
  • the connecting member is presented by engaging the ring of the upright in the slot so that a hole of the ring comes to be placed in the axis of the tubular part. .
  • the key is then slid into the tubular portion through the hole in the ring. In this way the connecting member is locked on the perforated ring.
  • Such a connection means of the components of the scaffolding between them is described in the patent FR2288199 on behalf of the plaintiff company and is widely used.
  • scaffolding When used in certain environments, particularly in an area related to the nuclear industry, such as a nuclear power plant, scaffolding may incur the risk of being contaminated by irradiated dusts. Such a risk also exists sometimes in the chemical industry and in environments using friable asbestos. Precautions are then taken to prevent any potentially contaminated material or dust from being transported outside the enclosure or critical area. Until now, in the nuclear field, the scaffolding is stored on the spot until at the end of life it is decided to discard them. When disposal is required, the material undergoes all appropriate treatments. Overall, it results in a relatively important for such a scaffolding whose further use remains exclusive for the site where it was introduced.
  • the present applicant has set itself the objective of making a scaffolding that it would not be necessary to maintain inside areas sensitive to contamination.
  • the same material could then be used fully or only partially, that is to say that after use in sensitive area, and after decontamination, it would be available for use in non-sensitive area. This availability would reduce the overall cost.
  • the objective is more particularly to achieve a scaffolding system whose decontamination can be carried out simply and economically without the implementation of tools or complex installation of decontamination.
  • a metal scaffolding system comprising tubular uprights connected by molds, the uprights being provided with at least one transverse ring forming a collar with openings at its periphery, the at their ends are provided with a connecting member with a locking key, the connecting member comprising a slot by which it is engaged on the ring and the key ensuring the locking by engagement in one of the openings of the ring, and possibly floors resting on months.
  • This scaffolding system is characterized in that the tubular uprights, and / or the moldings and / or the floors are of controllable type and that the tubular uprights consist of tubular elements comprising an axial stud at each end, two elements tubulars being assembled in the extension of one another by means of a connecting tube in which are slid the studs end to end.
  • the invention relates preferably to scaffolding made of aluminum or aluminum alloy because the surface treatment is integrated in the material, but it also relates to the realization of another metal, steel for example.
  • Controllable qualification designates elements - uprights, floor slabs and others - composed of first parts whose surface is accessible for manual cleaning and a live visual inspection and possibly of second parts, the surface of which is not accessible for manual cleaning and live visual control. These second parts are closed by manufacturing and the joints guaranteed by welding.
  • a part is said to be accessible to manual cleaning if it can be wiped off the surface with a cloth, directly, without the assistance of any instrument.
  • the whole surface must be in direct vision.
  • the material may comprise parts not accessible to manual cleaning, such as for example inside the tubes. In this case, these parts are closed by so-called plugs, completely sealed and guaranteed for the life of the product. By this condition, the dust can not reach these surfaces and settle. There is no need to access it.
  • the scaffolding system according to the invention can then be decontaminated according to known decontamination rules without cost going beyond what is industrially acceptable.
  • the tubular elements comprise a tube closed at both ends by an axial stud welded so as to seal the inside of the tube.
  • the axial studs are solid with a transverse orifice, passing through or not for the passage of a locking means of the connecting tube on the axial studs.
  • the horizontal molds comprise a longitudinal element with a U-shaped cross section, at the end of which the connecting members are welded.
  • the diagonal moldings comprise a longitudinal element with a U-shaped cross section, at the end of which the connecting members are bolted.
  • the transverse ring is formed of a solid plate welded to the tubular element.
  • the scaffolding system comprises at least one floor element, preferably anti-slip, with two hooks on both sides cooperating with the molds, said floor element being of controllable type.
  • the hooks themselves are controllable type and are preferably full.
  • the floor element comprises at least one hollow closed-profile element, the ends of which are closed by a sheet welded tightly.
  • the scaffolding system comprises horizontal molds forming floor support beams and provided or not with reinforcing members.
  • the scaffolding system comprises at least one controllable type ladder formed at least in part of tubes whose ends are closed by attached plates and sealingly welded.
  • FIG. 1 a metal scaffold, more particularly aluminum, whose structure is itself already known. It is composed of vertical uprights 3 spaced from each other and interconnected by horizontal molds 5, the longitudinal ones 5B, the other transverse 5A. Diagonal molds 7 consolidate the parallelograms thus formed. The transverse horizontal molds 5A serve as supports for floor elements 8.
  • the uprights 3 are composed of upright members 30, one of which is shown in FIG. 2.
  • This element consists of a tube 31 with a circular cross-section or the like, shaped by rolling a sheet and soldering autogenously or other, for example. It comprises at each end an axial pin 32 welded at the end of the tube tightly; that is to say that inside the tube is invisible and inaccessible.
  • the weld seam 32A visible in FIG. 3 completely circles the contact zone between the tube and the stud. This one is full and obtained by machining; if necessary, it is chamfered. The machining allows easy implementation and a guarantee of play between the assembly parts. It is pierced transversely with a hole 33. The stud makes it possible to assemble two elements end to end.
  • molds 5 To connect the uprights together they use molds 5. These are formed of a longitudinal element 50 with U section with a connecting member 51 at each end. Figure 5 shows only one end.
  • the connecting member 51 has a substantially trapezoidal section shape. It is pierced with a channel 51A for the passage of a key 53. This channel is perpendicular to the axis of the element 50 and the base of the U of the U-shaped section. A slot 51B is formed transversely thereto. channel.
  • the member 51 is welded to the element 50 by its base. It is observed that the weld bead 54 is continuous inside and outside all along the surface of the element 50 in contact with the base of the connecting member 51.
  • the connecting member 51 remains easily accessible by the back.
  • the connecting member 51 makes it possible to fix the collar to an upright 30.
  • This upright 30 is provided with a ring 34 forming a collar welded transversely to the tubular element 31, as can be seen in FIG. weld bead 34A connecting the ring 34 to the tubular element 31 is continuous all the way around.
  • the ring 34 is pierced with openings 34 B oriented along the axis of the tubular element 31.
  • For the fixing a connecting member on the ring simply engage the member 51 by the slot 51B on the ring 34 ensuring that the channel 51A is in alignment with an opening 34 B.
  • the key 53 is then slid into the channel through the opening of the ring.
  • the connecting member 51 is in this way locked on the ring 34.
  • This method of attachment is in itself known and commonly used. It corresponds to the teaching of the patent FR 2288199 .
  • the solution of the invention makes it possible to bind the tubular elements forming the uprights and the molds to elements of the prior art which are not of the controllable type.
  • This solution therefore has the advantage of interchangeability between the controllable type elements in the sense defined above and the current elements already in use.
  • the possibility of mixing the controllable elements with elements of the traditional range constitutes a certain economic advantage. It should be noted that in this area the regulations prohibit this diversity for scaffolding of different origins
  • FIG. 6 shows the end of a diagonal ribbon 7.
  • a rib comprises a longitudinal element 70 with a U-shaped section and at each end a connecting member 71 of the same structure as the linkage member. 51 of the horizontal molds.
  • the member is fixed to the longitudinal member by a screw 72 cooperating with a nut 73.
  • it is a safety nut to prevent inadvertent loosening during use of the scaffold.
  • This attachment mode allows to adjust the angle formed by the longitudinal member 70 with the key 74 for locking the connecting member 71 on a ring of a vertical upright.
  • the assembly formed by the screw and the nut is of the consumable type.
  • the diagonal rib is removed to separately treat the U 70 and the connecting member 71. The screw and nut assembly is not recovered; it is disposed of with other waste.
  • the scaffolding system according to the invention also comprises floor elements of controllable type. An example is shown in Figures 7, 8 and 9.
  • Such a floor element 8 comprises two longitudinal side girders 81 and 82, with a closed closed profile here of substantially rectangular section, a longitudinal central beam 83 with a T-section, the plateau 80 covering the beams, two transverse plates 85 and 86 at the end of the longitudinal beams, and two pairs of hooks 87 and 88 on the transverse plates.
  • the floor element is of the controllable type.
  • this character is obtained by welding the plates 85 and 86 at the end of the beams 81, 82 and 83 so that the weld bead, 85A and 86 and respectively, is continuous making the beams 81 and 82 watertight. No dust can penetrate inside the tubular beams 81 and 82.
  • the hooks are also welded to the plates so that the weld bead formed is continuous so as to prevent the formation of any crevice that may constitute the receptacle. dust particles that can not be removed by direct manual cleaning.
  • a floor element provided with a hatch for the passage of a ladder for access from one floor of the scaffold to the other.
  • the parts of the element are dismantled and treated in the same way as the other elements, the bolts being always considered as waste.
  • Other controllable and not shown scaffolding elements are baseboards, pedestals and safety seals and monoblock guardrails.
  • FIG 10 there is shown a scale 9 made according to the principle of the invention.
  • the lateral uprights consist of two tubes 91 and 92 closed at their ends by plates 91 ', 92' reported and welded with a weld bead 91A, 92A continuous making the amounts sealed.
  • the bars 93 of the ladder are also tubular and welded to the uprights along continuous weld seams making them tight.
  • Fig. 11 shows a horizontal beam, serving as a floor support for large widths, transverse comprising a reinforced longitudinal member 100 by a tubular frame 110. Plates 91 ', 92' are welded on one side to the member and on the other to the chord. In this component we find the characteristics of the invention. The welds are continuous and any hollow part not accessible directly is closed by a weld.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP07120086.9A 2006-11-06 2007-11-06 Metallgerüstsystem Active EP1921222B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0654746A FR2908143B1 (fr) 2006-11-06 2006-11-06 Systeme d'echafaudage metallique

Publications (2)

Publication Number Publication Date
EP1921222A1 true EP1921222A1 (de) 2008-05-14
EP1921222B1 EP1921222B1 (de) 2013-12-11

Family

ID=38123674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07120086.9A Active EP1921222B1 (de) 2006-11-06 2007-11-06 Metallgerüstsystem

Country Status (2)

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EP (1) EP1921222B1 (de)
FR (1) FR2908143B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3003284A1 (fr) * 2013-03-14 2014-09-19 Axmann Sas Plancher d'echafaudage en caillebotis
US9103080B2 (en) 2004-03-31 2015-08-11 Safway Services, Llc Articulating work platform support system, work platform system, and methods of use thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120228060A1 (en) * 2008-06-10 2012-09-13 Rogers Peter J High capacity vertical member for use with modular scaffolding

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1090185A (en) * 1963-10-31 1967-11-08 Theodore Coppel Improvements in scaffolding and like frameworks
FR2288199A1 (fr) * 1974-10-16 1976-05-14 Layher Eberhard Systeme d'echafaudage tubulaire, notamment pour le batiment
GB2000541A (en) * 1977-06-29 1979-01-10 Layher E Scaffolding
DE3005128A1 (de) * 1980-02-12 1981-08-20 Eberhard 7129 Güglingen Layher Baukasten zum zusammenbau beliebiger zerlegbarer modelle von baugeruesten
WO1993001380A1 (en) * 1991-07-12 1993-01-21 Ronald Lubinski Aluminum scaffold system
US5207527A (en) * 1992-04-13 1993-05-04 Warren Duncan System scaffold wedging arrangement
DE29815450U1 (de) * 1998-08-28 1998-12-10 Wilhelm Layher Vermögensverwaltungs-GmbH, 74363 Güglingen Querriegel für ein Gerüst
US20030079420A1 (en) * 2001-10-30 2003-05-01 Arxx Building Products, Inc. Temporary bracing system for insulated wall form and method
FR2833028A1 (fr) * 2001-12-04 2003-06-06 Hymer Leichtmetallbau Assemblage a emboitement pour echafaudages

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296916A1 (de) * 1987-06-11 1988-12-28 Gérard Saby Modulares Bauelement, insbesondere für Leitern oder Gerüste

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1090185A (en) * 1963-10-31 1967-11-08 Theodore Coppel Improvements in scaffolding and like frameworks
FR2288199A1 (fr) * 1974-10-16 1976-05-14 Layher Eberhard Systeme d'echafaudage tubulaire, notamment pour le batiment
GB2000541A (en) * 1977-06-29 1979-01-10 Layher E Scaffolding
DE3005128A1 (de) * 1980-02-12 1981-08-20 Eberhard 7129 Güglingen Layher Baukasten zum zusammenbau beliebiger zerlegbarer modelle von baugeruesten
WO1993001380A1 (en) * 1991-07-12 1993-01-21 Ronald Lubinski Aluminum scaffold system
US5207527A (en) * 1992-04-13 1993-05-04 Warren Duncan System scaffold wedging arrangement
DE29815450U1 (de) * 1998-08-28 1998-12-10 Wilhelm Layher Vermögensverwaltungs-GmbH, 74363 Güglingen Querriegel für ein Gerüst
US20030079420A1 (en) * 2001-10-30 2003-05-01 Arxx Building Products, Inc. Temporary bracing system for insulated wall form and method
FR2833028A1 (fr) * 2001-12-04 2003-06-06 Hymer Leichtmetallbau Assemblage a emboitement pour echafaudages

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9103080B2 (en) 2004-03-31 2015-08-11 Safway Services, Llc Articulating work platform support system, work platform system, and methods of use thereof
US9783939B2 (en) 2004-03-31 2017-10-10 Safway Services, Llc Articulating work platform support system, work platform system, and methods of use thereof
US10563365B2 (en) 2004-03-31 2020-02-18 Brandsafway Services Llc Articulating work platform support system, work platform system, and methods of use thereof
FR3003284A1 (fr) * 2013-03-14 2014-09-19 Axmann Sas Plancher d'echafaudage en caillebotis

Also Published As

Publication number Publication date
FR2908143A1 (fr) 2008-05-09
EP1921222B1 (de) 2013-12-11
FR2908143B1 (fr) 2010-11-12

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