EP0538325A1 - Madrier pour echafaudages et son procede de production. - Google Patents

Madrier pour echafaudages et son procede de production.

Info

Publication number
EP0538325A1
EP0538325A1 EP91912690A EP91912690A EP0538325A1 EP 0538325 A1 EP0538325 A1 EP 0538325A1 EP 91912690 A EP91912690 A EP 91912690A EP 91912690 A EP91912690 A EP 91912690A EP 0538325 A1 EP0538325 A1 EP 0538325A1
Authority
EP
European Patent Office
Prior art keywords
profile
scaffold plank
scaffold
lower sheet
plank
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
EP91912690A
Other languages
German (de)
English (en)
Other versions
EP0538325B1 (fr
Inventor
Wolfgang Welser
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.)
JOSEF WELSER oHG PROFILIER- und STANZWERK
WELSER oHG JOSEF
Original Assignee
JOSEF WELSER oHG PROFILIER- und STANZWERK
WELSER oHG JOSEF
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 JOSEF WELSER oHG PROFILIER- und STANZWERK, WELSER oHG JOSEF filed Critical JOSEF WELSER oHG PROFILIER- und STANZWERK
Publication of EP0538325A1 publication Critical patent/EP0538325A1/fr
Application granted granted Critical
Publication of EP0538325B1 publication Critical patent/EP0538325B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04G1/152—Platforms made of metal or with metal-supporting frame

Definitions

  • the invention relates to a method for producing a scaffold plank for a scaffolding, in which a substantially smooth continuous, the upper side of the scaffold plank forming upper sheet metal profile with a corrugated, in cross-section trapezoidal troughs and valleys having the underside of the scaffold plank lower sheet profile connects.
  • Such a scaffold plank is known for example from FR-A 24 57 946. There, however, it is the case that the scaffold plank consists of an upper continuous plate and a lower continuous plate, with a trapezoidal corrugated plate being provided as the core between the two plates.
  • the scaffolding planks mentioned at the outset already have the advantage that they are relatively insensitive to the effects of the weather.
  • the use of steel sheets increases the weight of the scaffolding planks if you want to maintain their rigidity.
  • the object of the present invention is therefore to improve a scaffold plank of the type mentioned at the outset so that its stability is increased while the weight is reduced.
  • the sheet thickness of the sheet profiles can be kept very low. A certain minimum thickness will only have to be provided for the upper sheet metal profile in order to avoid damage to the sheet metal profile from falling tools.
  • the essentially point-by-point or section-wise linear connection of the upper and lower sheet metal profiles causes the foam filled into the cavity to deform at least slightly during its expansion and to brace it against one another. Even if the connection of the wave crests of the lower sheet profile to the upper sheet profile should still permit any movements, these movements are prevented by the foam bracing the two sheet profiles against one another.
  • the scaffold plank is completely rigid for the person entering it, evenly over the entire surface of the scaffold plank.
  • a foamed scaffold plank is already known from GB-20 58 188; there, however, the top and bottom of the scaffold plank consist of a glass fiber reinforced plastic, the cavities of which are only filled. Bracing the top of the scaffold plank against the underside is neither provided nor desirable since the glass fiber reinforced Plastic would be damaged in this way.
  • the foam can be a polyurethane foam.
  • the cavity enclosed by the upper and lower sheet metal profiles can be realized in a simple manner in that the upper sheet metal profile is bent downward at its longitudinal edges and engages around the longitudinal edges of the lower sheet metal profile.
  • This has the advantage that the long edges do not have to be connected to one another in a special way. Rather, the foam expanding in the cavity presses the encompassing longitudinal edges into one another.
  • the longitudinal edges of the lower sheet metal profile are formed by corrugated valleys spaced apart from the upper sheet metal profile, and on the other hand, in the corrugated valleys, adjacent to the longitudinal edges, longitudinally extending, upwardly directed beads are formed in which engages a hook tab of the upper plate from below. This creates a positive locking of the long edges of the upper and lower sheet when foaming the screed.
  • the longitudinal edges are sealed due to the inclined surfaces pressing against each other, so that no foam can escape to the outside.
  • the lower sheet profile has a sinusoidal cross section
  • the selected lower sheet profile has trapezoidal wave troughs and peaks in cross section.
  • the total volume of the cavity to be filled with foam can be kept relatively low without the stability of the scaffold board suffering as a result.
  • the upper profile sheet forming the top of the screed has a tread with embossments.
  • the indentations rise to the top of the scaffold board '.
  • the impressions can preferably be longer than wide and arranged in a herringbone-like pattern.
  • the herringbone pattern oblique to the longitudinal direction of the scaffold board is oriented so that different longitudinal directions are arranged at the longitudinal edges of the tread impressions'. This has the advantage that there is no continuous line in the direction toward the longitudinal direction of the screed, which would favor buckling of the scaffold plank in the event of a point load in the center of the scaffold plank.
  • the thickness of the lower sheet profile is less than that of the upper sheet profile. Since the upper sheet metal profile hardly has a supporting function, the thickness of the upper profile sheet is determined essentially on the basis of the puncture resistance required in order to prevent damage from falling tools or the like. Since the underside of the scaffold plank is not exposed to such stresses, the sheet thickness can be correspondingly lower without the static properties of the scaffold plank suffering as a result.
  • 1 is a plan view of a scaffold board according to the invention
  • 2 is a bottom view of the screed from FIG. 1
  • FIG. 3 is a sectional view through the screed from FIG. 1 along the line III-III,
  • Fig. 4 in a view similar to Fig. 1, a variant of a scaffold plank, and
  • Fig. 5 in a view similar to Fig. 1, a further variant of a scaffold plank.
  • the scaffold plank 1 shown in the drawing consists, as can be seen in particular from the enlarged cross-sectional view in FIG. 3, of an upper sheet metal profile 3 forming the upper side 2 and a selected lower sheet metal profile 4.
  • the waves achieved by the trapezoidal waves in the cross section of the lower sheet metal profile 4 Profiles extend in the longitudinal direction of the screed 1.
  • the trowel peaks 5 facing the upper sheet profile 3 are connected to one another at points 6 with the upper sheet profile 3 in the joining process, ie punched or riveted without the use of foreign material.
  • the upper and lower sheet metal profiles 3 and 4 are connected to one another at the longitudinal edges 7 of the scaffold plank.
  • the lower sheet profile 4 ends in the area of the longitudinal edges with a wave trough 8 spaced from the upper sheet profile 3, which ends in the middle. From there, the lower sheet metal profile 4 still extends upwards in a vertical section 9 and then ends in a horizontal leg 10.
  • the upper sheet profile 3 encompasses the horizontal leg 10, the section 9 from the outside and engages with a freely ending hook tab 11 into a longitudinal, upward-facing bead 17 of the lower wave valley 8 of the lower sheet metal profile 4.
  • the chambers 12 and 12 'of the cavity enclosed by the sheet metal profiles 3 and 4 resulting from the connection of the upper sheet metal profile 3 to the lower sheet metal profile 4 are foamed with a polyurethane foam which expands during curing.
  • 1 cross profiles 13 are riveted to the front ends of the scaffold plank, to which the connecting hooks 14 are fastened for hanging in the scaffold.
  • the upper side 2 formed by the upper sheet metal profile 3 is provided with impressions 15 directed towards the upper side.
  • the individual impressions 15 have a greater length than width and are arranged in a herringbone pattern.
  • the longitudinal orientation of the herringbone pattern which is indicated by the arrow 0, includes an angle with the longitudinal direction of the scaffold plank 1. This has the effect that the impressions 15 in the area of the longitudinal edges are not aligned over a longer distance, which increases the slip resistance. Furthermore, there is no closed line in the transverse direction of the scaffold plank, so that a "predetermined kink" is not provoked by the impressions 15.
  • the upper sheet metal profile 3 and the lower one are first separated from one another Sheet profile 4 made.
  • the lower sheet profile 4 is pushed into the upper sheet profile 3 in the longitudinal direction of the scaffold plank 1, the longitudinal edges 7 of the lower sheet profile being encompassed by the longitudinal edges of the upper sheet profile 3.
  • the upper sheet profile 3 is punched with the lower sheet profile in the area of the wave crests 5 of the same.
  • the cross sections 13 are plugged onto the front ends and riveted.
  • the hook tab 11 is pressed firmly into the bead 17 of the lower sheet profile, resulting in a stable connection of the longitudinal edges of the upper and lower sheet profiles and at the same time an effective seal against escaping foam.
  • the sheet used to manufacture the scaffold plank is preferably a galvanized steel sheet, the sheet thickness of the lower sheet profile depending on the width, length and requirements of the scaffold plank can be in the range of 0.3 to 1 mm, while the sheet thickness of the upper sheet profile can vary according to required puncture resistance and should rather be above 0.5 mm.
  • FIG. 4 shows a variant of a scaffold plank 1 which corresponds in all essential features to the scaffold plank described above, which is why identical reference numerals are used for identical and similar components.
  • the impressions 15 are not arranged in the form of a herringbone pattern.
  • the impressions are rather in the form of crosses arranged offset with respect to one another in the longitudinal and transverse directions of the scaffolding planks, the free ends 16 of which merge into sections of the top side 2 of the scaffolding plank free of embossing. This also avoids that the impressions run in the form of a closed direction in the transverse or longitudinal direction of the screed.
  • FIG. 5 shows a further variant of a scaffold plank, which also corresponds in all essential features to the scaffold planks described above, which is why identical reference numerals are also used for identical and similar components.
  • the embossments are provided in the form of star patterns offset from one another. These are individual impressions 15 which have different orientations and are each grouped in groups to form stars which are arranged offset from one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Movable Scaffolding (AREA)
  • Moulding By Coating Moulds (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Finishing Walls (AREA)

Abstract

Afin d'augmenter la stabilité tout en réduisant le poids d'un madrier pour échafaudages formé d'une tôle profilée ondulée supérieure et d'une tôle profilée ondulée inférieure, les crêtes de la tôle profilée inférieure (4) sont ponctuellement reliées à la tôle profilée supérieure (3). Les cavités (12) ainsi formées sont remplies d'une mousse expansible et durcissable qui sollicite pendant son expansion les tôles profilées supérieure et inférieure l'une contre l'autre.
EP91912690A 1990-07-06 1991-07-04 Madrier pour echafaudages et son procede de production Expired - Lifetime EP0538325B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9010264U 1990-07-06
DE9010264U DE9010264U1 (de) 1990-07-06 1990-07-06 Gerüstbohle

Publications (2)

Publication Number Publication Date
EP0538325A1 true EP0538325A1 (fr) 1993-04-28
EP0538325B1 EP0538325B1 (fr) 1994-02-02

Family

ID=6855361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91912690A Expired - Lifetime EP0538325B1 (fr) 1990-07-06 1991-07-04 Madrier pour echafaudages et son procede de production

Country Status (7)

Country Link
US (1) US5443137A (fr)
EP (1) EP0538325B1 (fr)
AT (1) ATE101227T1 (fr)
DE (2) DE9010264U1 (fr)
DK (1) DK0538325T3 (fr)
ES (1) ES2041620T3 (fr)
WO (1) WO1992001131A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690188B1 (fr) * 1992-04-17 1995-09-15 Edac Planche d'echafaudage metallique.
US6105723A (en) * 1996-12-23 2000-08-22 Harsco Corporation Steel plank for scaffolding
DE19806092A1 (de) * 1998-02-14 1999-08-19 Layher W Vermogensverw Gmbh Gerüstboden
US6419046B1 (en) * 1999-12-14 2002-07-16 Ninefields Cubby Limited Scaffold end caps
DE10012685B4 (de) * 2000-03-15 2007-06-21 Wilhelm Layher Verwaltungs-Gmbh Verfahren zur Herstellung eines Laufbodens
US6745871B2 (en) * 2002-03-27 2004-06-08 Chad D. Armstrong Interlocking scaffold plank
NO319365B1 (no) * 2003-11-12 2005-07-18 Rh Products Int As Gulvelement for stillas
US7476733B2 (en) 2005-03-25 2009-01-13 The United States Of America As Represented By The Department Of Health And Human Services Development of a real-time PCR assay for detection of pneumococcal DNA and diagnosis of pneumococccal disease
WO2009116096A1 (fr) * 2008-03-19 2009-09-24 Marcegaglia Builings S.P.A. Plaque métallique pour échafaudage et son procédé de fabrication
US20130256060A1 (en) * 2012-03-29 2013-10-03 Safway Services, Llc Scaffold Plank Structure
DE202013005337U1 (de) * 2013-06-12 2014-09-15 Tegometall International Ag Regalfachboden
DE102015212384A1 (de) * 2015-07-02 2017-01-05 Peri Gmbh Gerüstteil und Gerüst mit einem solchen Gerüstteil
US20190063085A1 (en) * 2018-10-31 2019-02-28 Canyon Metal Scaffolding Engineering Limited Bridge plank applicable to construction sites

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1962274A1 (de) * 1969-12-12 1971-07-15 Eberhard Layher Horizontales Geruestelement fuer Holz- und Metallgerueste
PL90358B1 (fr) * 1974-06-25 1977-01-31
DE2916826A1 (de) * 1979-04-26 1980-11-06 Eberhard Layher Laufplanke aus metall
GB1556553A (en) * 1978-02-22 1979-11-28 Lombard Engs Ltd Scaffolding
GB1590522A (en) * 1978-05-20 1981-06-03 Kwikform Ltd Scaffold board
FR2457946A1 (fr) * 1979-06-01 1980-12-26 Somefran Element de plancher pour echafaudage
GB2055944B (en) * 1979-07-17 1983-08-03 Kwikform Ltd Non-skid surfaces
GB2058188A (en) * 1979-08-14 1981-04-08 Hill R T Building Boards
GB2157752B (en) * 1984-04-05 1987-10-28 Rolkan Nv Double walled slat for roller shutters or for wall cladding
EP0268720B1 (fr) * 1986-11-24 1991-01-23 Polytex Plastic Sa Plancher d'échafaudage en matière synthétique, méthode pour fabriquer ce plancher et dispositif pour réaliser cette méthode
SE458538B (sv) * 1987-07-22 1989-04-10 Ahlsell Profil Ab Trall foer byggnadsstaellningar och saett att tillverka en saadan trall

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9201131A1 *

Also Published As

Publication number Publication date
DE59100998D1 (de) 1994-03-17
EP0538325B1 (fr) 1994-02-02
WO1992001131A1 (fr) 1992-01-23
US5443137A (en) 1995-08-22
ES2041620T1 (es) 1993-12-01
ATE101227T1 (de) 1994-02-15
DK0538325T3 (da) 1994-05-09
ES2041620T3 (es) 1994-06-01
DE9010264U1 (de) 1991-10-31

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