EP0408210A2 - Schalungsvorrichtung - Google Patents

Schalungsvorrichtung Download PDF

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Publication number
EP0408210A2
EP0408210A2 EP90306916A EP90306916A EP0408210A2 EP 0408210 A2 EP0408210 A2 EP 0408210A2 EP 90306916 A EP90306916 A EP 90306916A EP 90306916 A EP90306916 A EP 90306916A EP 0408210 A2 EP0408210 A2 EP 0408210A2
Authority
EP
European Patent Office
Prior art keywords
end plate
main leg
plate
bracing
formwork system
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Withdrawn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
EP90306916A
Other languages
English (en)
French (fr)
Other versions
EP0408210A3 (en
Inventor
Roy Derek Brownley
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.)
RMD Kwikform Ltd
Original Assignee
GKN Kwikform Ltd
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 GKN Kwikform Ltd filed Critical GKN Kwikform Ltd
Publication of EP0408210A2 publication Critical patent/EP0408210A2/de
Publication of EP0408210A3 publication Critical patent/EP0408210A3/en
Withdrawn legal-status Critical Current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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/483—Supporting heads

Definitions

  • This invention relates to a formwork system as utilised by the construction industry to provide what is known in the art as soffit, table or flying formwork/­falsework.
  • the invention particularly relates to a lightweight formwork system wherein the majority of its components are manufactured of an aluminium alloy by extrusion techniques.
  • a formwork system comprising a plurality of vertically disposable main legs, ledgers and bracing wherein each main leg is provided with an end plate at each end thereof to which a rotatable female threaded element of a screw jack is securable; releasable retaining means engaging a flange portion of said female threaded element and said end plate and being releasably secured to said end plate whereby said female element is retainable captive to said end plate in freely rotatable relation thereto.
  • Said releasable retaining means conveniently comprises a metal plate having a central semi-circular slot formed therein extending from an edge thereof with a peripheral rim of said slot being offset from the plane of the plate whereby the plate is releasably securable to a said end plate of a main leg with the said rim of the slot engaged over a said flange portion of a female element of a screw jack.
  • Said metal plate is conveniently provided with an aperture alignable with an aperture provided in a said end plate of a main leg whereby said metal plate may be bolted through said aligned apertures to the main leg end plate.
  • the lightweight formwork system described and illustrated herein in accordance with the invention includes a plurality of components, the majority of which are manufactured as aluminium alloy extrusions.
  • the systems illustrated therein comprise a plurality of horizontally spaced vertically disposed main leg assemblies 10, a plurality of ledger frames 12 each interconnecting and being releasably securable to adjacent pairs of main legs, a plurality of horizontally spaced apart horizontally disposed primary beams 14 supported either directly on the main legs or on the ledger frames, and a plurality of horizontally spaced apart horizontally disposed secondary beams 16 supported on the primary beams.
  • base and head screw jacks 18 and 20 attached to the respective lower and upper ends of each main leg, jack base members 22 and bracing collars 24 for receiving bracing 26 and 28 for supporting the ledger frames.
  • Each main leg assembly 10 comprises a main leg proper 30 manufactured as an aluminium alloy extrusion of the profile shown in Figures 4,5, 9 and 12.
  • the profile comprises a substantially square hollow centre section 32 with integral flanges 34 defining four longitudinally extending T-shaped slots 36 with the mouth of each slot facing outwardly of the leg.
  • Each main leg also has secured thereto, as by welding, at each of its upper and lower ends an end plate 38 which in the embodiment illustrated in Figures 9 and 12 is of octagonal configuration.
  • Each end plate 38 has an aperture 40 extending therethrough for the purpose further described hereinafter.
  • Each main leg assembly 10 also includes either or both base and head screw jacks 18 and 20, a head jack 20 being shown in more detail in Figures 8 and 9.
  • the head screw jack comprises a central male screw threaded element 42 of coarse pitch and a winged rotatable female screw threaded element 44 engaged about the male element 42.
  • the female element 44 includes an end flange 46 which, as shown in Figures 8 and 9, rests on the upper end plate 38 of the main leg with part of the male element 42 extending into the central hollow section of the leg 30.
  • a pressed metal retainer plate 48 is located to engage over respective parts of the associated end plate 38 and over the flange 46.
  • the metal plate 48 has a central semi-circular slot extending from one edge thereof with a peripheral rim of said slot offset from the plane of the plate whereby the plate 48 is releasably securable to the end plate 38 with the rim of the slot engaged over the end flange 46 of the female element 44.
  • the retainer plate is clamped in position by a bolt 50 passing through an aperture in the plate 48 aligned with the aperture 40 in the main leg end plate 38 as shown in Figure 9 whereby the jack 30 is secured to the main leg with the female element 44 being freely rotatable.
  • a similar arrangement of retainer plate assembly may be provided at the lower end plate of each main leg to secure a base jack 18 thereto.
  • the end plate 38 is provided with four equi-angularly spaced slots 52.
  • Such slots 52 in the end plate 38 enable an additional main leg 30 to be secured thereto by bolting passing through the slots in adjacent end plates of the two legs.
  • a head jack 20 may not be utilised, and a primary beam 14 may be supported directly on the upper end plate of the main leg by bolting to the upper end plate 38 through the slots 52.
  • the upper end of the male element 42 of the head jack 20 may be provided with differing head fittings 54 or 56 as shown in Figure 8.
  • the head fitting 54 may comprise a channel-shaped member 58 within which a primary beam 14 may be disposed, and include a plurality of apertured lugs 60 for receiving bracing members.
  • the head fitting 56 may comprise a flat plate 62 having apertures therethrough in which are engaged T-bolts 64 clampable within the lower slot of a primary beam 14; the primary beam being described in more detail below.
  • Such a plate type head fitting 56 may also include a plurality of apertured lugs 60 for the securing of bracing members thereto.
  • the head fitting 54 and 56 includes a downwardly depending collar 66 which fits over the upper end of the head jack male element 42 and is secured thereto by a bissell pin 68 passing through aligned apertures 70 in the collar 66 and a transversely extending bore 72 in the element 42.
  • FIG. 10 which also illustrates a jack base member 22 comprising an aluminium alloy casting having a cylindrical central collar 74 for receiving the lowermost end of the base jack male element 42.
  • the casting also includes four radially outwardly extending equi-distantly spaced apart wings 76 within each of which is provided an aperture 78 for the securing of bracing 26 thereto.
  • the jack base member also includes a planar base plate 80 and is secured to the male element 42 by means of a bissell pin 82 extending through aligned apertures 84 in the collar 74 and a bore 86 in the male element 42.
  • the base jack member may be secured to the lower end plate of the main leg by a similar retaining plate 48 to that shown in Figure 9 and thus the effective length of the main leg assembly 10 may be varied by appropriate rotation of the female elements 44 of the base or head jacks 18 and 20.
  • Each main leg assembly 10 may also include a bracing collar 24 as shown in Figures 11 and 12.
  • Such collar 24 comprises a two-part hinged aluminium alloy casting having central body parts 88 - 90 shaped to fit snugly around the main leg 30 and to be clamped thereon by a clamping nut and bolt assembly 92.
  • the collar 24 includes four radially outwardly extending equi-­distantly spaced apart wings 94 each having an apertured lug 96 therein for engagement by bracing members 28.
  • the bracing collar 24 is conveniently clamped around a main leg 30 immediately adjacent and above the lower end plate 38 of the respective main leg.
  • loading on the ledger frames is transmitted via bracing 28 and collar 24 to the lower end plate 38 of a respective main leg and thence to the associated base jack 18.
  • each ledger frame 12 is comprised essentially of upper and lower horizontally disposed elements 98 and 100, a pair of vertically disposed end elements 102 extending between the horizontal elements and one or more intermediate vertically disposed elements interconnecting the horizontal elements 98 and 100.
  • Diagonal bracing 106 may also be included at one or more positions in each ledger frame.
  • Either or both of the upper and lower horizontal elements 98 and 100 may be provided with respective upwardly or downwardly projecting apertured lugs 108 for the securing of bracing members 26 or 28 thereto.
  • each vertical end element 102 of each ledger frame 12 is illustrated in more detail in Figures 4 and 5 and comprises a hollow box section extrusion of a substantially T-shaped profile to provide a longitudinally extending projection 110 engageable within the mouth of a T-shaped slot 36 on a main leg 30.
  • each ledger frame 12 interconnects and is securable to adjacent pairs of main legs 30 and such securement is effected by the clamping bolt 112 shown in Figures 5 and 6.
  • each of such clamping bolts 112 has a T-head 114 engageable within a T-shaped slot 36 of a main leg 30 and a threaded shank 116 which extends through aligned apertures 118 in opposed faces of the end element 102 of a ledger frame.
  • a nut 120 with an integral lever arm 122 is threadedly engaged on the bolt shank 116 to engage that face of the ledger frame end element 102 remote from the projection 110 whereby tightening of the nut will clamp the frame to the main leg.
  • the Primary Beams and Secondary Beams are The Primary Beams and Secondary Beams.
  • the primary beams 14 and the secondary beams 16 are of somewhat similar configuration with the primary beams 14 being disposed in horizontally spaced relationship and supported either directly by a head fitting 54 or 56 of a main leg assembly 10 or on the upper horizontal elements 98 of the ledger frames 12.
  • the secondary beams 16 are supported in horizontally spaced relationship on the upper surfaces of the primary beams 14 and secured thereto in a known manner.
  • each of said primary beams 14 is an aluminium alloy extrusion comprising two spaced I-section flanged elements 124 integrally interconnected by a planar central web 126 and also interconnected by two opposed channel-shaped integral webs 128 each located intermediate the central web 126 and the upper and lower co-planar flanges 130 of the beam respectively.
  • Each of said secondary beams 16 is also an aluminium alloy extrusion conveniently substantially of the profile illustrated in British Registered Design 995006 comprising two spaced I-section flanged elements integrally interconnected by a pair of parallel spaced planar webs intermediate upper and lower co-planar flanges of the beam.
  • each primary beam 14 is secured to an upper horizontal ledger frame element 98 by a U-shaped clip 132 having a T-shaped head 134 at one end engageable within the T-shaped slot of the primary beam 14 and having a securing flange 136 at the other end through which passes a nut and bolt assembly 138 for clamping that end of the clip to the slower flanges 130 of the primary beam.
  • bracing members 26, 28 may be connected between the ledger frames 12 and associated main leg assemblies 10.
  • bracing may be connected between the wings 76 of the jack base members 22 and the lower horizontal elements 100 of the ledger frames, or between the wings 94 of the bracing collars and the lower horizontal elements 100 of the ledger frames, or between the lugs 60 of the head fittings 54 or 56 and the upper horizontal elements 98 of the ledger frames.
  • the braces 26 may be of the form described in British Patent 1 599 646 comprising tubular telescopic elements extending from either or both the upper and lower horizontal frame elements 98, 100 of the ledger frames 12 to a respective main leg assembly 10.
  • the ledger frame 12 is supported in accordance with the invention by bracing such as is shown at 28 in Figures 1 and 2.
  • bracing 28 may comprise a vertically or substantially vertically disposed turn-buckle assembly extending, as shown in Figures 1 and 2, from the wings 94 of the bracing collar 24 to locations adjacent the ends of the lower horizontal elements 100 of the ledger frames.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP19900306916 1989-07-08 1990-06-25 Formwork system Withdrawn EP0408210A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898915695A GB8915695D0 (en) 1989-07-08 1989-07-08 Formwork system
GB8915695 1989-07-08

Publications (2)

Publication Number Publication Date
EP0408210A2 true EP0408210A2 (de) 1991-01-16
EP0408210A3 EP0408210A3 (en) 1991-08-07

Family

ID=10659756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900306916 Withdrawn EP0408210A3 (en) 1989-07-08 1990-06-25 Formwork system

Country Status (3)

Country Link
EP (1) EP0408210A3 (de)
GB (2) GB8915695D0 (de)
IE (1) IE64192B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002266A1 (en) * 1991-07-17 1993-02-04 Speral Aluminium Inc. Modular scaffolding assembly
US5240089A (en) * 1991-07-17 1993-08-31 Speral Aluminum Inc. Modular scaffolding assembly
KR20010000269A (ko) * 2000-08-31 2001-01-05 박성수 거푸집용 프리케스트 판넬과 다목적 조립재의 제조 및시공 시스템
CN111212951A (zh) * 2017-11-20 2020-05-29 Peri有限公司 脚手架柱、脚手架和用于生产脚手架柱的方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2262561B (en) * 1991-12-20 1995-05-17 Sgb Holdings Ltd Improvements in or relating to a shoring leg
GB2262562B (en) * 1991-12-20 1994-10-19 Sgb Holdings Ltd Improvements in or relating to a shoring system
GB9127100D0 (en) * 1991-12-20 1992-02-19 Sgb Holdings Ltd Improvements in or relating to a shoring system
GB2265921B (en) * 1992-04-08 1995-05-24 Sgb Holdings Ltd Improvements in or relating to a shoring leg
CN108316634A (zh) * 2018-03-28 2018-07-24 天津鼎维固模架工程股份有限公司 一种用于承插型盘扣式钢管支架的铝托梁结构
CN113585730B (zh) * 2021-08-13 2022-07-01 中国建筑第五工程局有限公司 一种用于柱与柱之间的模板结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693309A (en) * 1970-08-19 1972-09-26 Jacob H Kutchai Shoring system
EP0058042A1 (de) * 1981-02-06 1982-08-18 George Wilbert Jackson Vorrichtung zur Befestigung eines Elementes am Stützrohr einer Stützkonstruktion
DE3641349A1 (de) * 1986-12-03 1988-06-16 Ischebeck Friedrich Gmbh Baustuetze

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693309A (en) * 1970-08-19 1972-09-26 Jacob H Kutchai Shoring system
EP0058042A1 (de) * 1981-02-06 1982-08-18 George Wilbert Jackson Vorrichtung zur Befestigung eines Elementes am Stützrohr einer Stützkonstruktion
DE3641349A1 (de) * 1986-12-03 1988-06-16 Ischebeck Friedrich Gmbh Baustuetze

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002266A1 (en) * 1991-07-17 1993-02-04 Speral Aluminium Inc. Modular scaffolding assembly
US5240089A (en) * 1991-07-17 1993-08-31 Speral Aluminum Inc. Modular scaffolding assembly
US5263296A (en) * 1991-07-17 1993-11-23 Speral Aluminium Inc. Modular scaffolding assembly
KR20010000269A (ko) * 2000-08-31 2001-01-05 박성수 거푸집용 프리케스트 판넬과 다목적 조립재의 제조 및시공 시스템
CN111212951A (zh) * 2017-11-20 2020-05-29 Peri有限公司 脚手架柱、脚手架和用于生产脚手架柱的方法

Also Published As

Publication number Publication date
GB8915695D0 (en) 1989-08-31
IE902323A1 (en) 1991-01-16
GB2234776B (en) 1993-04-07
GB2234776A (en) 1991-02-13
EP0408210A3 (en) 1991-08-07
GB9014101D0 (en) 1990-08-15
IE64192B1 (en) 1995-07-12

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