CA2198249A1 - A device for a scaffold - Google Patents

A device for a scaffold

Info

Publication number
CA2198249A1
CA2198249A1 CA 2198249 CA2198249A CA2198249A1 CA 2198249 A1 CA2198249 A1 CA 2198249A1 CA 2198249 CA2198249 CA 2198249 CA 2198249 A CA2198249 A CA 2198249A CA 2198249 A1 CA2198249 A1 CA 2198249A1
Authority
CA
Canada
Prior art keywords
diagonal strut
wedge
fastener
rim
set forth
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.)
Abandoned
Application number
CA 2198249
Other languages
French (fr)
Inventor
Martin Husebo
Johnny Skold
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.)
Alustar AS
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 CA2198249A1 publication Critical patent/CA2198249A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00Connections between parts of the scaffold
    • E04G7/30Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/32Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using wedges
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00Connections between parts of the scaffold
    • E04G7/30Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/302Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
    • E04G7/306Scaffolding 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
    • E04G7/307Scaffolding 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Clamps And Clips (AREA)
  • Electric Cable Installation (AREA)
  • Movable Scaffolding (AREA)
  • Bridges Or Land Bridges (AREA)
  • Ladders (AREA)

Abstract

A scaffold comprises vertical struts or spires (7) and horizontal struts, which may be jetting out struts, each supported by a diagonal strut (1) which, at each end thereof, is provided with a fastener (2) for connection to rims (6) on horizontal struts and spires (7) in the junction points of the scaffold, and wherein the interconnection between the diagonal strut fastener (2) and the rim (6) is secured by means of a locking means, which may have the shape of a wedge (4) or another interconnecting insertion means, e.g. a bolt, passing through registering hole portions of holes (3', 3'', 5) in diagonal strut fastener (2) and rim (6). One has aimed at providing a pressure force transferring arrangement wherein the wedge (4) is not loaded or is loaded minimally. To this end, the diagonal strut fastener (2) is formed with at least one first land area (10, 10') for resting pressure force transferringly against an opposing, adjacent face portion (7') on a spire (7) and at least one second land area (11) for resting pressure force transferringly against an opposing, adjacent face portion (6') on the rim (6) on the spire (7).

Description

~ WO96/06~1 P~ i39 A DEVICE FOR A SCAFFOLD

The invention relates to a device for a cr~ffrl~ of the kind comprising vertical struts or spires, horizontal struts which may be cantilever struts each supported by a diagonal strut which, at each end, is provided with fasteners for connection to rims on horizontal struts and spires in the ~unction points of the scaffold, and where the interconnection between diagonal strut fastener and rim is secured by means of a locking means, which may have the form of a wedge or another insertion means, e.g. a bolt passing through registering wedge/bolt ar~ ting hole portions of holes in diagonal strut fastener and rim.

In conventional scaffolas of the kind defined introductorily, ~ the wedge sticks and may get locked within a diagonal strut fastener's hole not used hitherto.

In conventional sr~ffrl~, the wedge acts as a force transferring means for pressure forces and a~ tes the entire pressure load. Consequently, the wedge must be dimensioned correspondingly and, therefore, it becomes voluminous and heavy. Each wedge is connected temporarily (prior to the mounting) to the diagonal strut fastener, and during the mounting the wedge is often operated manually from the opposite end of the diagonal strut, and a heavy wedge w~ll then be rather unwieldy.

r.

W096/06~1 ~ P~l...~ :/( ISY ~
,~ . 2 1 98249 A primary object of the present invention has, therefore, been to design ànd shape the diagonal fastener such in relation to adjacent elements and members of the scaffold that transfer of pressure forces between diagonal strut and horizontal strut/spire is secured, without loading the wedge, the bolt or a similar connecting insertion means in the junction point of the scaffold.

This object is realized through designing and shaping the diagonal strut fastener in accordance with the characterising clause of the following claim 1.

To this end, the diagonal strut fastener is formed with land areas adapted to come to rest ~L~SYUL~ force transferringly against faces on the horizontal strut/spire and against a face on said rim. When the diagonal strut is subjected to ~l~S~UL~ forces, a land area thereon is pressed against the rim with a contact creating ~La~uLe, in order to secure an efficient pressure force transfer.

As indicated introductorily, the insertion means (wedge/
bolt) which is to secure the interconnection of the diagonal strut fastener and the rim and which, to this end, becomes inserted through their registering hole portions, is connected such with the diagonal strut fastener that said insertion means is carried by the diagonal strut fastener, following the same during the installation.

The invention does not require that a substantial real wedge action takes place, so that a bolt having a uniform cross-section may be used; the insertion means, e.g. the wedge, exhibiting a hook at the upper end in order to prevent that the wedge get stuck within the diagonal strut fastener prior to the latter being attached to a rim. The opposite end of the wedge may have a lateral tube rivet which, in the connection position, is to a '~te a split pin. The tube rivet has a larger axial length than the width of the upper hole in the bifurcated diagonal strut fastener, and the lower .
, ~ WO96/06~1 ~I...J~ 13Y
3 21 9824~

end of the wedge can, consequently, not get lost by being pulled upwardly.

The lower hole, i.e. the hole in the lower branch of the bifurcated diagonal strut fastener, will, of course, have so large dimensions in the lateral direction of the wedge that the wedge's lower end and its tube rivet may pass therethrough.

As previously indicated, during the installation of the scaffold, a diagonal strut may be handled in such a way that the operator holds one end of the diagonal strut while he tries to interconnect its upper fastener carrying the wedge and an overlying rim on a spire, the lower end of the latter occupying a position above the ground and being connected to the outer end of a jetting-out strut. With such a manoeuvring, the branches of the bifurcated strut fastener are to be placed one above and one below the rim, three wedge Ar -~Ating hole portions vertically aligned;
moreover, the lower end of the wedge must simultaneously take a position immediately above said hole of the rim.
This is very difficult to manage by traditional scaffold rnmpnnPntS .

According to the invention, the wedge, bolt or another connecting insertion means may be formed such that it has a first longitudinal portion forming~an obtuse angle in relation to the another longitudinal portion. Such an angled/curved wedge/bolt may, prior to the mounting, be tilted rearwardly and take a temporarily stable position of rpA~inpccl so that the lower end carrying the tube rivet occupies the desired position just below the upper branch of the bifurcated diagonal strut fastener. When this lower wedge end is lmmediately above the hole in the rim belonging thereto, the diagonal strut fastener through the strut may be subjected to ~n appropriate displacement movement, during which the diagonal strut fastener for instance impinges slightly against the adjacent spire portion, putting the WO96106~1 ~ s ~ 4 r~ 9 upwardly extending, rearwardly swung portion into an adequate motion, so that the wedge falls into position within the registering hole portions of the holes in the bifurcated diagonal strut and the hole in the rim.

If tensile forces are expected to occur in the junction points of the scaffold, real wedges should be used; otherwise undesired displacements between adjacent parts to be kept together may take place.
; , ~he invention is further explained in connection with the drawings, wherein:

Figure l shows a perspective partial view illustrating adjacent components, respectively portions thereof, which may be incorporated in a scaffold junction point;
:
Figure 2 shows the diagonal strut fastener coupled to the end portion of the diagonal strut, seen separately in side elevational view;

Figure 3 shows the same as figure 2, seen from above;

Figure 4 shows the same as figure 2, but here the wedge is not only passed through the wedge a:- '~ting hole in the upper branch of the bi~urcated diagonal strut fastener, but also secured against being pulled out through said hole;
additionally, the wedge's upper angled portion is tilted rearwardly so that the wedge takes a position of r~;n~cq, from where it may be put into motion forwardly, in order to get it to fall down into the hole of the rim as well as into the corresponding hole portion of the bottom branch of the ~ifurcated fastener.

According to figure l, the upper end of a diagonal strut l is connected to a bifurcated diagonal strut fastener 2 by means of a lateral bolt 13.

WO 96/06251 P~1II~J _.'~ I~Y
21g8~49 The diagonal strut fastener's 2 upper branch is indicated at 2' and the lower one at 2". The branches 2', 2" of the bifurcated fastener 2 are each formed with a wedge ting, vertically through-going hole 3' and 3", respectively, which in size and shape is adapted to ~ te a wedge, generally denoted by means of the reference numeral 4, sald wedge 4, ln the position of use, figure 1, takes a substantially vertical position.

The wedge 4 is curved repectively angled in the longitudinal direction and, in the position of use, has an upper portion 4' and a lower portion 4", said portions 4', 4"
forming an obtuse angle with each other.

Figure 4 shows how the wedge's ~ulv~LuLe/angular course can be utilized. Thereby, the wedge is tilted rearwardly (in relation to the junction point of the scaffold, figure 1), taking a position of r~in~qs, from where it with relative ease should be tilted forwardly in order to fall down into vertically registering hole portions of holes 3', 3" in branches 2', 2" of the bifurcated fastener 2 and an int~ te hole 5 in a rim 6 on a scaffold spire 7, figure 1. : ~

Likewise, it appears from figure 1 and 4 that the wedge portion being the uppermost in the position of use has a hook 4''' preventing the wedge 4 from getting stuck in the upper hole 3'.

Likewise, from figure 4 it appears that the lower end of the wedge 4 is provided with a lateral tube rivet 8 which is placed in a hole in the wedge subsequent to the passage of the lower portion 4" of the wedge 4" through the hole 3' of the upper ~ranch 2', so that the wedge 4 thereafter can not be pulled out of its engagement with the diagonal strut fastener 2, whereafter wedge 4 and diagonal strut 1,2 constitute an assembly facilitating the subsequent mounting operations.

.

W096/06251 PCT~095/00139 ~ 6 2~982 When the wedge 4, as known per se, has been passed through the holes of the branches 2', 2" and one hole 5 of the rim 6, said three holes registering in the vertical direction, or rather those portions of said holes 3', 3" and 5 ~LL ~1~.."Sing vertically and the opening area thereof complementarily corrPcpnn~;ng to the wedge's 4 cross-section at the cross-section positioning level in question, a locking cotter 9 is inserted into the tube rivet 8.

In order to secure that ~L~S~ULe force transfer in the scaffold junction points takes place without loading the wedge or a similar insertion means, such as a bolt, so that a slender wedge can be used, light in weight and, thus, simple to handle during its movements between the position of rP~inP~s according to figure 4 and the locking position according to figure l, the diagonal strut fastener 2 is formed with land areas lO, lO', ll, ll' adapted to rest ~L~S~Le force transferringly partly against a face 7' on the spire 7 and partly against a face 6' on the rim 6.

In the Pr~Q~;r t, first land areas lO, lO' on the diagonal strut fastener 2 are formed on the outer end edge of the two branches 2', 2" in the form of projecting mouldings engaging into vertical grooves or flutes formed in the opposing rim portion and the bottom portion thereof forming a land area.

Second land area ll forms an angle differing from a right angle with a vertical plane through the wedge ~ ting holes 3', 3" of the branches 2', 2".

The design, shaping and mutually positioning of the pressure force transferring land areas/stop faces cooperating in pairs are, in other respects, such that these are pressed toward each other with a force substantially proportional with the pressure forces to be transferred.

~ WO96/06~1 PCT~09~00139 From the top plan view of ~igure 3 it will appear that the bi~urcated connection portion 2',2" of the ~;~gnn~l strut ~astener 2 is angled in relation to an i~aginary plane through the fl;Agon~l strut 1.

, ;.

Claims (8)

C l a i m s
1. A device for a scaffold of the kind comprising vertical struts or spires (7) and horizontal struts which may be jetting out struts each supported by a diagonal strut (1) which, at each end thereof, is provided with a fastener (2) to be connected to rims (6) on horizontal struts and spires (7) at the junction points of ther scaffold, and wherein the interconnection between diagonal strut fastener (2) and rim (6) is secured by a locking means which may have the shape of a wedge (4) or another interconecting insertion means, e.g. a bolt, passing through registering hole portions of holes (3', 3", 5) in the diagonal strut fastener (2) and in the rim (6), respectively, c h a r a c t e r i z e d i n that the diagonal strut fastener (2) is formed with at least a first land area (10, 10') adapted to rest pressure force transferringly against an opposing, adjacent face portion (7') of a scaffold spire (7) and at least one second land area (11) adapted to rest pressure force transferringly against an opposing, adjacent face portion (6') on the rim (6) on the spire (7).
2. A device as set forth in claim 1, c h a r a c t e r i z e d i n that said first and second land areas (10, 10', 11, 11') on the diagonal strut fastener (2) each has a vertical course in the position of use.
3. A device as set forth in claim 1 or 2, c h a r a c t e r i z e d i n that said first land area (10, 10') on the diagonal strut fastener (2) is formed by a tongue-like portion engaging into a groove-like portion (7') formed in the spire (7), the tonge (10, 10') resting pressure force transferring against the bottom of the groove (7').
4. A device as set forth in claim 1 or 2, c h a r a c t e r i z i n g i n that said first land area on the diagonal strut fastener (2) is formed by a groove-like portion into which engages a tongue-like portion formed on the spire (7), the tongue resting pressure force transferringly against the bottom of the groove.
5. A device as set forth in any one of the preceding claims, c h a r a c t e r i z e d i n that said second land area (11) forms an angle differing from a right angle with a central plane through the wedge-accommodating holes (3', 3") of the branches (2', 2").
6. A device as set forth in any one of the preceding claims, c h a r a c t e r i z e d i n that the wedge (4) or a corresponding interconnecting insertion means is curved respectively angled in the longitudinal direction.
7. A device as set forth in claim 6, c h a r a c t e r i z e d i n that the wedge (4) is a a gibhead key.
8. A device as set forth in any one of the preceding claims, c h a r a c t e r i z e d i n that the diagonal strut fastener (2) is angled respectively curved in the longitudinal direction and, at one end thereof, is formed with said bifurcated portion (2',2") having wedge-accommodating holes (3', 3") while, at the opposite end thereof, it has a bifurcated connection portion for the end of the diagonal strut (1), said bifurcated connection portion being angularly displaced in relation to the first-mentioned bifurcated portion (2', 2").
CA 2198249 1994-08-22 1995-08-21 A device for a scaffold Abandoned CA2198249A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO943095 1994-08-22
NO943095A NO179877C (en) 1994-08-22 1994-08-22 Device for diagonal rod attachment for scaffolding purposes

Publications (1)

Publication Number Publication Date
CA2198249A1 true CA2198249A1 (en) 1996-02-29

Family

ID=19897327

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2198249 Abandoned CA2198249A1 (en) 1994-08-22 1995-08-21 A device for a scaffold

Country Status (7)

Country Link
EP (1) EP0777804B1 (en)
AU (1) AU686448B2 (en)
CA (1) CA2198249A1 (en)
DE (1) DE69513405T2 (en)
DK (1) DK0777804T3 (en)
NO (1) NO179877C (en)
WO (1) WO1996006251A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011326881B2 (en) * 2010-11-08 2014-12-18 Alustar As Method and device for locking a support ring to a scaffolding column
CN108131009A (en) * 2018-02-12 2018-06-08 陶冶 A kind of vertical brace taps fastener

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878273B1 (en) * 2004-11-24 2007-02-23 Comabi Snc DEVICE FOR ASSEMBLING ELEMENTS OF A TUBULAR SCAFFOLDING
DE102011001796A1 (en) 2011-04-05 2012-10-11 Wilhelm Layher Verwaltungs-Gmbh scaffolding post
WO2012163340A1 (en) 2011-06-01 2012-12-06 Wilhelm Layher Verwaltungs-Gmbh Arrangement of a scaffolding component and of a vertical scaffolding element
KR101905363B1 (en) 2018-04-30 2018-10-05 김봉민 Apparatus for using rectangle scaffold
NO345174B1 (en) * 2018-07-27 2020-10-26 Gunnar Strand Node connection for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system.
KR102054706B1 (en) * 2018-09-14 2019-12-11 주식회사 네오 Hybrid scaffolding stricture, and integrated connector for the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8112653U1 (en) * 1981-04-29 1981-11-05 Layher, Eberhard, 7129 Güglingen "FRAME ELEMENT"
US4493578A (en) * 1982-09-30 1985-01-15 Harsco Corporation Scaffolding connector and system
US5207527A (en) * 1992-04-13 1993-05-04 Warren Duncan System scaffold wedging arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011326881B2 (en) * 2010-11-08 2014-12-18 Alustar As Method and device for locking a support ring to a scaffolding column
CN108131009A (en) * 2018-02-12 2018-06-08 陶冶 A kind of vertical brace taps fastener

Also Published As

Publication number Publication date
DE69513405T2 (en) 2000-06-15
NO943095L (en) 1996-02-23
NO179877C (en) 1997-01-08
AU686448B2 (en) 1998-02-05
WO1996006251A1 (en) 1996-02-29
DK0777804T3 (en) 2000-05-15
AU3356795A (en) 1996-03-14
NO179877B (en) 1996-09-23
NO943095D0 (en) 1994-08-22
EP0777804B1 (en) 1999-11-17
DE69513405D1 (en) 1999-12-23
EP0777804A1 (en) 1997-06-11

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Legal Events

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