EP1264057B1 - Ledger with locking device for modular scaffolding or similar - Google Patents

Ledger with locking device for modular scaffolding or similar Download PDF

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Publication number
EP1264057B1
EP1264057B1 EP01915977.1A EP01915977A EP1264057B1 EP 1264057 B1 EP1264057 B1 EP 1264057B1 EP 01915977 A EP01915977 A EP 01915977A EP 1264057 B1 EP1264057 B1 EP 1264057B1
Authority
EP
European Patent Office
Prior art keywords
ledger
catch
locking device
locking
standard
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
EP01915977.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1264057A1 (en
Inventor
Ulf Oskarsson
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.)
Haki AB
Original Assignee
Haki AB
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 Haki AB filed Critical Haki AB
Publication of EP1264057A1 publication Critical patent/EP1264057A1/en
Application granted granted Critical
Publication of EP1264057B1 publication Critical patent/EP1264057B1/en
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
    • E04G7/302—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

Definitions

  • the present invention relates to a ledger with a locking device for modular scaffolding, such as building site scaffolding, mason's staging or similar, and especially to such ledger with a locking device between ledgers and standards, for preventing the components of the modular scaffolding to become disconnected from each other.
  • the locking device is springing and self-locking.
  • a previously known method for fitting ledgers (horizontal members) to standards (vertical poles) in a modular scaffolding, for example a scaffold, is to utilise e.g. screws and wedges.
  • Such fastening devices do not allow any simple and advantageous way of mounting and disassembling of the modular scaffolds.
  • Another, more advantageous method of the prior art comprises the arrangement of loops or rings on the standards, wherein ledgers are fastened by attaching hooks, provided on the ledger ends, from above into the loops.
  • the mounting is locked by means of a manual locking device.
  • This manual locking device comprises a catch, turned manually towards the standard, the catch thereby becoming fixed in its locked position by means of gravity and the friction occurring between rivet and washer, which hold the catch comprised in the locking device, and thus locks the ledger to the standard.
  • Document US 5 988 317 A discloses a ledger with locking device for locking ledgers to standards in modular scaffolding.
  • the locking device exhibits a spring catch to be arranged between the ledger and a standard.
  • the spring catch comprises a bent wire and at least one separate spring for bias of the spring catch.
  • the present invention relates to an improvement of the known locking devices, wherein the locking of ledgers to standards is made by means of a springing and self-locking locking device.
  • the present invention thus relates to a ledger with a locking device between ledgers and standards for modular scaffolds or similar.
  • the locking device exhibits a spring catch between the ledger and the standard.
  • the catch is provided on the ledger and will, in its locked position, secure the ledger to the standard.
  • the catch may have the shape of a curved wire, both ends of which are arranged at the ledger, in two holes controlling the springing properties of the catch.
  • the present invention relates to a springing and self-locking locking device, arranged between a ledger and a standard in e.g. scaffolding.
  • the locking device comprises a spring catch, preferably arranged at the exterior end of the ledger.
  • the catch may be modified to be arranged on the standard (not shown).
  • Fig. 1 shows a ledger 1 without a catch 2.
  • two holes 3 and 3' and a slot 4 are provided for mounting of the catch as shown in Fig. 2 .
  • the holes 3 and 3' are spaced from each other both vertically and horizontally, for controlling the springing properties of the catch 2.
  • one of the holes 3 or 3' may be shaped like a slot (not shown).
  • Figs. 4 and 6 show a side view and an end view, respectively, of said catch 2.
  • the catch 2 When mounting the ledger 1 to the standard, the catch 2 will be in its open or its locked position. In its open position, the hooks 6 and 7 of the ledger 1 can be hooked, without resistance, into the loops on the standard. The catch is then switched over to its locking position. The protruding tip of the catch 2 will then be placed under the upper loop of the standard, preventing the ledger from being lifted up; thus making it securely locked. Disassembling is performed in reverse order.
  • Assembly can also be performed with the catch in the locking position 4A.
  • the catch will then perform a self-locking function.
  • the lower loop on the standard (not shown), will then push the catch 2 a small distance in the direction towards the vertical portion 5 of the ledger 1, as the ledger is pushed on from above.
  • the catch 2 will spring back towards the standard, thereby wedging the catch 2 against the lower edge of the upper loop thus performing automatic locking.
  • the above catch 2 is made of an corrosion-resistant material, such as zinc-coated or stainless steel, plastic or some other material suitable for the purpose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)
  • Emergency Lowering Means (AREA)
  • Laser Surgery Devices (AREA)
  • Laser Beam Processing (AREA)
  • Lasers (AREA)
EP01915977.1A 2000-03-15 2001-03-13 Ledger with locking device for modular scaffolding or similar Expired - Lifetime EP1264057B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0000867A SE523130C2 (sv) 2000-03-15 2000-03-15 Låsanordning för modulställning eller liknande
SE0000867 2000-03-15
PCT/SE2001/000518 WO2001069009A1 (en) 2000-03-15 2001-03-13 Locking device for modular scaffolding or similar

Publications (2)

Publication Number Publication Date
EP1264057A1 EP1264057A1 (en) 2002-12-11
EP1264057B1 true EP1264057B1 (en) 2016-09-28

Family

ID=20278826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01915977.1A Expired - Lifetime EP1264057B1 (en) 2000-03-15 2001-03-13 Ledger with locking device for modular scaffolding or similar

Country Status (7)

Country Link
EP (1) EP1264057B1 (pl)
AU (1) AU2001242922A1 (pl)
DK (1) DK1264057T3 (pl)
NO (1) NO320920B1 (pl)
PL (1) PL207828B1 (pl)
SE (1) SE523130C2 (pl)
WO (1) WO2001069009A1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20093035A1 (no) * 2009-09-21 2011-03-22 Delta System As Koplingsanordning for sammenfoyning av vertikale og horisontale konstruksjonsdeler for bygningsstillas, tildekningskonstruksjoner, telt, lagerhaller etc.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874802A (en) * 1973-03-30 1975-04-01 Edward George Lindsey Locking devices
US4197642A (en) 1977-09-29 1980-04-15 Melvin Wallshein Bent wire orthodontic spring clip
US4592689A (en) * 1984-05-25 1986-06-03 Leitzke Rue S Ring spring cotter
US4630956A (en) * 1984-10-05 1986-12-23 Safway Scaffolds Company Of Houston Scaffolding connection and retention device and method
DE4237442A1 (de) * 1992-11-06 1994-05-11 Scozzari Agostino Bolzensicherung
GB9602816D0 (en) * 1996-02-12 1996-04-10 Nolan James G Ladder tie
US5988317A (en) 1998-09-21 1999-11-23 Riding; Gary Modular hinged scaffold unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
NO20024203D0 (no) 2002-09-03
WO2001069009A1 (en) 2001-09-20
DK1264057T3 (en) 2017-01-16
SE523130C2 (sv) 2004-03-30
SE0000867L (sv) 2001-09-16
PL358003A1 (pl) 2004-08-09
NO320920B1 (no) 2006-02-13
AU2001242922A1 (en) 2001-09-24
EP1264057A1 (en) 2002-12-11
SE0000867D0 (sv) 2000-03-15
NO20024203L (no) 2002-11-13
PL207828B1 (pl) 2011-02-28

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