EP0389933B1 - Lochscheibe für Verbindungsvorrichtungen für Gerüstelemente - Google Patents

Lochscheibe für Verbindungsvorrichtungen für Gerüstelemente Download PDF

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Publication number
EP0389933B1
EP0389933B1 EP90105278A EP90105278A EP0389933B1 EP 0389933 B1 EP0389933 B1 EP 0389933B1 EP 90105278 A EP90105278 A EP 90105278A EP 90105278 A EP90105278 A EP 90105278A EP 0389933 B1 EP0389933 B1 EP 0389933B1
Authority
EP
European Patent Office
Prior art keywords
wedge
holes
push
abutment surface
scaffolding elements
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.)
Expired - Lifetime
Application number
EP90105278A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0389933A1 (de
Inventor
Ruth Geb. Layher Langer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0389933A1 publication Critical patent/EP0389933A1/de
Application granted granted Critical
Publication of EP0389933B1 publication Critical patent/EP0389933B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/32—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using wedges
    • 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
    • E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
    • E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
    • E04G7/307—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect with tying means for connecting the bars or members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/30—Laterally related members connected by latch means, e.g., scaffold connectors

Definitions

  • connection heads and wedges are known.
  • High-strength perforated disks are required for such connecting devices, a wedge contact surface on which the wedge is supported being formed on the outer edge of the hole, while the precise positioning of the inner edge of the wedge hole is not important.
  • Perforated disks with corresponding wedge holes, alternately small and large, as can be seen from the drawings, have proven themselves for 15 years.
  • scaffolding elements are made of light metal. Standardized scaffolding is bound to certain dimensions that are binding for all interchangeable elements. For this reason, the permissible loads are often severely limited by the material properties and the specified dimensions.
  • the areas around the wedge holes represent the force application and transmission areas that can be used to optimize the clamping forces and payloads.
  • the basic use of light metal for such scaffolding is such. B. become known in DE-OS 37 02 057 A1. However, one always used the old hole shapes and only tried to take advantage of the installation and assembly play as well as certain tolerances as far as possible, but did not know how to influence the voltage profiles in the perforated disks.
  • a connecting device for connecting horizontal and vertical framework elements made of aluminum in which a four-armed connecting part produced in a non-cutting molding process has arms, the vertical thickness of which decreases towards the outside.
  • special support surfaces for the attachment of fastening shoes are formed on the connecting part. Outside open spaces are left between the arms.
  • the arms have radial recesses for the insertion of wedges, the vertical surfaces of which are wedge-shaped and partly rounded.
  • the outward boundary with the greatest radial distance from the center each recess is also designed as a partial cone.
  • ribs and profiles are formed. No horizontal pipes can be connected in the diagonal areas.
  • a connecting device is known from EP-A-0 289 825, the perforated disk of which has a collar-like edge and the connecting elements of which are of a different design.
  • the holes in the perforated discs have a trapezoidal shape with rounded edges in the acute-angled corners of the straight-line hole boundaries facing the center with the smallest possible radius. It can be seen from this that optimization of the stress relationships is not part of the content of the disclosure of this document.
  • the object of the invention is to achieve improvements in the areas of such perforated disks which are important for the propagation of force, transmission and the course of the tension, with their essential features dealt with in advance in order to increase the permissible clamping forces and payloads by suitable design.
  • Edge areas and the introduction of the forces into the perforated disk and the transfer into the handle can, however, also be used in a somewhat modified form, but the wedge contact surface remains in the intended form and the rest of the lines run continuously and without kinks.
  • a punched perforated disk made of light metal with significantly improved load conditions can be produced without additional effort.
  • the perforated disc 10 has an outer, cylindrically delimited edge 11 with the diameter 12, which is 124 mm in the designs of a particularly proven design.
  • the perforated disc 10 has a thickness 14, which is 10 mm in the proven design.
  • the perforated disc 10 also has a central bore 15 which has a diameter 16.
  • the diameter 16 is 48.8 mm in a tried-and-tested version and fits exactly on corresponding tubes that are to be used for supports and supports as well as other scaffolding elements.
  • the perforated disk is made of light metal, for example an Al-Mg-Si alloy, and can be punched out from corresponding plates. It is attached to the pipes in a suitable manner and fastened, for example, by welding. However, other types of fastening such as shrinking, crimping, gluing or other deformation and fastening techniques are also to be used.
  • the perforated disc 10 has two different types of wedge holes.
  • There are larger wedge holes 20 which are located opposite one another in the diagonals and which are delimited by two part-circle-hole walls 21 and 22 running on circular sections and two radial edges 23.1 and 23.2 and in the corners with the corner Radius 24 are rounded.
  • the inner part-circle-hole wall 21 of the wedge holes 20 runs at a distance 17 from the inner wall 15.1 of the central bore 15, which is, for example, about 5.6 mm, so that there is an inner boundary circle of diameter 25 with, for example, 60 mm .
  • the outer part-circle-hole wall 22 runs on a wedge contact circle, the diameter 26 of which is 100 mm in the selected exemplary embodiment.
  • the outer part-circle-hole walls 22 represent the wedge contact surfaces of the large holes, which make it possible to connect corresponding connection heads with wedges at angles which are not strictly specified, which is in particular at 45 ° to the other connections for diagonal bars, but in the case of oblique mounting and additional elements is also possible at other angles.
  • Such wedge holes 20 have always been used in the same form.
  • the angular range that the hole occupies is indicated by 27 and is approximately 40 °, the remaining angle 28 to the main axes 29.1 and 29.2 being 25 °, so that the large wedge holes 20 run symmetrically over the diagonal.
  • the small wedge holes 30 important for the invention have a special shape.
  • the outer wedge contact surface 31 is designed as a tangent or chord in the wedge contact circle 26, the differences between the chord and tangent not being important because of the shortness of the distance.
  • the wedge contact surface 31 has a width 32, which in the exemplary embodiment is approximately 6 to 6.5 mm, in any case as wide as the thickness of conventional wedges plus an assembly and compensation play of approximately 0.5 to 1 mm.
  • the radial hole depth 33 corresponds the hole depth of the large wedge holes 20, but the limitation shape is chosen here in a special way.
  • the entire hole boundary 35 or contour in the embodiment according to the invention has the shape of a continuously curving curve which is symmetrical to the radius running through the centers of the wedge contact surfaces 31 and forming the two main axes 29.1 and 29.2.
  • the result is approximately a pear shape which has an almost cylindrical region 36 of smaller diameter facing the central bore 15 or the stem inserted therein and two side regions 37/38 which adjoin continuously with larger radii and which are of the same overall shape. You go in the corners 39 in the wedge contact surface 31 relatively sharp with an obtuse angle.
  • this area is, however, of a much larger diameter than the inner areas, there is sufficient accumulation of material in the wedge-like, diverging fixed areas 42, so that the internal stresses are low even with high clamping forces.
  • less material is available in the areas 41 closer to the center, which is why any peak effects that occur with previous shapes are significantly more critical of the stress curve and thus the material loads impact.
  • Such disadvantageous peak effects are now completely avoided by the kink-free shape in the areas 41 of low material accumulation.
  • the new perforated disc 10 according to the invention thereby allows the introduction of significantly larger wedge support forces on the wedge contact surfaces 31, which are taken up in critical places without the risk of breakage, so that the scaffolding is also subjected to higher loads in the light metal version without the risk of inadmissible deformations or breaks can be.
  • the perforated disc (10) has a central bore (15) for the stem and large known wedge holes (20) and approximately pear-shaped new wedge holes (30) with wedge contact surfaces (31).

Landscapes

  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Dowels (AREA)
  • Drilling Tools (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Surgical Instruments (AREA)
  • Air Bags (AREA)
  • Tents Or Canopies (AREA)
  • Soil Working Implements (AREA)
  • Movable Scaffolding (AREA)
  • Ladders (AREA)
EP90105278A 1989-03-24 1990-03-21 Lochscheibe für Verbindungsvorrichtungen für Gerüstelemente Expired - Lifetime EP0389933B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909809A DE3909809A1 (de) 1989-03-24 1989-03-24 Lochscheibe fuer verbindungsvorrichtungen fuer geruestelemente
DE3909809 1989-03-24

Publications (2)

Publication Number Publication Date
EP0389933A1 EP0389933A1 (de) 1990-10-03
EP0389933B1 true EP0389933B1 (de) 1993-06-02

Family

ID=6377167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105278A Expired - Lifetime EP0389933B1 (de) 1989-03-24 1990-03-21 Lochscheibe für Verbindungsvorrichtungen für Gerüstelemente

Country Status (12)

Country Link
US (1) US5046879A (no)
EP (1) EP0389933B1 (no)
JP (1) JPH0810631Y2 (no)
AT (1) ATE90135T1 (no)
AU (1) AU630437B2 (no)
CA (1) CA2012953C (no)
DE (2) DE3909809A1 (no)
DK (1) DK0389933T3 (no)
ES (1) ES2042109T3 (no)
FI (1) FI86211C (no)
NO (1) NO174400C (no)
PT (1) PT8346U (no)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008006911A1 (de) 2008-01-24 2009-07-30 Wilhelm Layher Verwaltungs-Gmbh Zum Aufbau einer Rahmenstütze, eines Traggerüsts und/oder eines Traggerüstturms bestimmter Vertikalrahmen
WO2010045693A2 (en) 2008-10-21 2010-04-29 Marc Keersmaekers A scaffold, upright and connecting element for a scaffold, and other scaffolding elements
DE202010013128U1 (de) 2010-12-15 2011-03-03 Wilhelm Layher Verwaltungs-Gmbh Anschlusskopfeinrichtung zum Anschluss an einer Lochscheibe eines Gerüststiels bzw. zum Koppeln mehrerer mit Lochscheiben versehenen Gerüststiele
DE102010000472A1 (de) 2010-02-19 2011-08-25 Wilhelm Layher Verwaltungs-GmbH, 74363 Baugerüst und Verfahren zum Montieren bzw. Demontieren eines derartigen Baugerüsts

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2101577C (en) * 1992-07-31 2005-06-07 Dale L. Taipale Modular portable stage system
DE19726950C2 (de) * 1997-06-25 1999-12-23 Plettac Ag Rosettenförmige Haltevorrichtung für Gerüstelemente
DE19844612A1 (de) * 1998-09-29 2000-03-30 Plettac Ag Haltevorrichtung an einem vertikalen Gerüstrohr
DE19918131A1 (de) * 1999-04-21 2000-10-26 Plettac Ag Haltevorrichtung aus gestanztem und gebogenem Blech
DE19925707B4 (de) * 1999-06-07 2007-04-12 Günter Rux GmbH Modulgerüst aus Rohren
ITBS20060029A1 (it) * 2006-02-17 2007-08-18 Nyco System S R L Metodo di fissaggio di una flangia di aggancio dei traversi di collegamento tra i montanti di un ponteggio al tubo del montante stesso
DE202006015586U1 (de) 2006-10-11 2008-02-21 Wilhelm Layher Verwaltungs-Gmbh Vertikalrahmenelement aus Metall
DE202009008127U1 (de) 2009-06-12 2009-08-27 G.M.B. Trade And Service Company Ltd. Fachwerk-Modulgerüstsystem
US9206618B2 (en) 2012-03-16 2015-12-08 Honeywell International Inc. Edge protection system using cantilevered counterweight
CN104358397A (zh) * 2014-10-30 2015-02-18 无锡市安捷脚手架有限公司 一种固定盘与立杆分离式盘式脚手架
DE202017102638U1 (de) 2017-05-03 2017-09-21 Hennadii Oleksandrovych Rybak Dreidimensionales mobiles Modulbaugerüsthandelsmessesystem des Fischers
JP6729881B2 (ja) * 2018-06-21 2020-07-29 戸田建設株式会社 足場における緊結装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449124C3 (de) * 1974-10-16 1980-01-03 Eberhard 7129 Gueglingen Layher Verbindungsvorrichtung für Gerüstelemente
US4493578A (en) * 1982-09-30 1985-01-15 Harsco Corporation Scaffolding connector and system
FR2553456B1 (fr) * 1983-10-18 1986-01-24 Roux Marcel Dispositif d'assemblage directionnel entre les elements tubulaires horizontaux et verticaux d'un echafaudage
DE3702057A1 (de) * 1987-01-24 1988-08-04 Langer Ruth Geb Layher Geruest mit verbindungsvorrichtungen
DE3715296A1 (de) * 1987-05-08 1988-11-17 Huennebeck Gmbh Knoten fuer baugerueste od. dgl.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008006911A1 (de) 2008-01-24 2009-07-30 Wilhelm Layher Verwaltungs-Gmbh Zum Aufbau einer Rahmenstütze, eines Traggerüsts und/oder eines Traggerüstturms bestimmter Vertikalrahmen
WO2009092340A1 (de) 2008-01-24 2009-07-30 Wilhelm Layher Verwaltungs-Gmbh Zum aufbau einer rahmenstütze, eines traggerüsts und/oder eines traggerüstturms bestimmter vertikalrahmen
WO2010045693A2 (en) 2008-10-21 2010-04-29 Marc Keersmaekers A scaffold, upright and connecting element for a scaffold, and other scaffolding elements
DE102010000472A1 (de) 2010-02-19 2011-08-25 Wilhelm Layher Verwaltungs-GmbH, 74363 Baugerüst und Verfahren zum Montieren bzw. Demontieren eines derartigen Baugerüsts
WO2011100941A1 (de) 2010-02-19 2011-08-25 Wilhelm Layher Verwaltungs-Gmbh Baugerüst und verfahren zum montieren bzw. demontieren eines derartigen baugerüsts
DE202010013128U1 (de) 2010-12-15 2011-03-03 Wilhelm Layher Verwaltungs-Gmbh Anschlusskopfeinrichtung zum Anschluss an einer Lochscheibe eines Gerüststiels bzw. zum Koppeln mehrerer mit Lochscheiben versehenen Gerüststiele
EP2466034A1 (de) 2010-12-15 2012-06-20 Wilhelm Layher Verwaltungs-GmbH Anschlusskopfeinrichtung zum Anschluss an einer Lochscheibe eines Gerüststiels bzw. zum Koppeln mehrerer mit Lochscheiben versehenen Gerüststiele

Also Published As

Publication number Publication date
PT8346U (pt) 1994-08-31
FI86211B (fi) 1992-04-15
CA2012953C (en) 1999-08-24
DE59001587D1 (de) 1993-07-08
EP0389933A1 (de) 1990-10-03
AU630437B2 (en) 1992-10-29
NO901362D0 (no) 1990-03-23
ATE90135T1 (de) 1993-06-15
US5046879A (en) 1991-09-10
DK0389933T3 (da) 1993-10-04
NO174400C (no) 1994-04-27
FI86211C (fi) 1992-07-27
ES2042109T3 (es) 1993-12-01
CA2012953A1 (en) 1990-09-23
DE3909809A1 (de) 1990-09-27
FI901433A0 (fi) 1990-03-22
NO174400B (no) 1994-01-17
PT8346T (pt) 1992-03-31
JPH02141052U (no) 1990-11-27
JPH0810631Y2 (ja) 1996-03-29
NO901362L (no) 1990-09-25
AU5217090A (en) 1990-09-27

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