WO1991011573A1 - Ameliorations apportees aux raccords d'echafaudages - Google Patents

Ameliorations apportees aux raccords d'echafaudages Download PDF

Info

Publication number
WO1991011573A1
WO1991011573A1 PCT/AU1991/000033 AU9100033W WO9111573A1 WO 1991011573 A1 WO1991011573 A1 WO 1991011573A1 AU 9100033 W AU9100033 W AU 9100033W WO 9111573 A1 WO9111573 A1 WO 9111573A1
Authority
WO
WIPO (PCT)
Prior art keywords
tongue
members
joint
abutment
edges
Prior art date
Application number
PCT/AU1991/000033
Other languages
English (en)
Inventor
Martin Wallis
Original Assignee
Martin Wallis
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 Martin Wallis filed Critical Martin Wallis
Publication of WO1991011573A1 publication Critical patent/WO1991011573A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections

Definitions

  • This invention relates to scaffolding and in particular to joints in scaffolding made of aluminium alloy tube where vertical members (uprights) and horizontal members (transoms) intersect. Whilst the invention has been devised with the above use particularly in mind the joint of the invention has wider applications and is not limited to scaffolding applications and has application to joints between tubing which is other than aluminium and circular.
  • joints using joining members have proved successful in overcoming the fracture problem, associated with welded joints, they are expensive to form. Such joints necessarily include a joining member having spigot parts (itself providing a capital cost for each joint) and there is the cold forming (swaging) required to form the joints.
  • the present invention overcomes both of the foregoing problems by providing a strong joint at less expense than that for a joining member type joint.
  • tubing in the spigot and swaging type joint the tubing is of light gauge (0.058 inches wall thickness) and such thin walled tubing is easily damaged when the scaffolding is in commercial use.
  • the presently proposed scaffolding is intended to use an alloy tube of greater wall thickness (0.105 inches) thus creating a more durable construction.
  • the use of heavy walled tubing in welded type scaffolding has established the greater durability to be obtained from heavier walled tube under the severe working conditions frequently encountered in industry.
  • joints as proposed by the present invention are directly between the tubes forming the scaffolding and as a consequence corrosion between close contacting dissimilar metals is avoided. This can occur where there is a difference in the quality or type of material used in the joints of known joining-member scaffolding.
  • the tubing as proposed to be used in the present invention and as is widely used in commercial scaffolding presently, is made of aluminium which is prone to joint corrosion when the members are not of substantially identical material specification.
  • the present invention can be said to comprise a right angle joint between two elongated members where said joint comprises an axially extending tongue at one end of one of said members with the tongue comprised of two face to face blade members, shoulder means on the tongue and a length between said shoulder means and a free end of said tongue which is greater than the thickness of the other of said members, slot means extending laterally through the thickness of the other of said members, said slot means having a width dimension between edges thereof in the axial direction of said other member which is substantially the same as the width dimension of said tongue between edges thereof and a breadth dimension such that said tongue is received in said slot means with minimal clearance, and blade tails comprised of those portions of the blades which extend from the slot means in said other member turned over in opposite directions at an angle to the plane of the tongue to abut said other member to pull the abutment means tightly against said other member.
  • FIG. 1 is a perspective view of the components of the joint shown separated
  • Fig.2 is a side view of an assembled joint
  • Fig.3 is a perepective view of the assembled joint of Fig.3 and Fig.4 is a top view of the asembled joint of Fig.2.
  • the upright 1 is made of aluminium tube, having a wall thickness of, in the order of, 2.5 mms and the diameter is in the order of 38 mms.
  • Such tube is.used in scaffolding aimed at the domestic/home handyman market.
  • the joint to be described is suitable not only for- scaffolding for the above market but is equally suitable for the commercial market where heavy walled tube of the same or greater diameter is used and also for special purpose markets where lighter wall tube of the same of different diameter is used.
  • the upright 1 is provided with diametrically disposed slots 2 and 3.
  • the slot 2 is parallel sided.
  • the slot 3 has a parallel sided upper portion 4 and a parallel sided lower portion 5 and an enlarged curve sided central portion 6.
  • the transom 7 is manufactured from the same specification aluminium tube and is flattened and notched (the portion removed by notching is shown in broken outline in Fig.l) to form a tongue 8 with sides that converge towards the free end of the blade.
  • the rib 11 is tapered in height with the height increasing as it extends away from the free end of the tongue.
  • the rib has zero height at about 1/3 of the distance from the shoulders 9 and 10 towards the free end of the tongue.
  • the edge notching of the flattened tongue-forming end portion of the transom exposes the edges of two back to back abutting blades formed by the flattening process, the two blades constitute the tongue 8.
  • the tongue 8 and the slot 2 are dimensioned so that the tongue 8 at its free end will pass with small working clearance through the slot 2.
  • the relative sizing is a function of the joint as will be explained hereinafter.
  • the tongue 8 is a neat sliding fit in the slot portions 4 and 5 and the profiles of the ribs 11 are such as to occupy the notch central portion 6 of the slot 3. Again the fit between these members is a function of the joint.
  • Fig. 2 it will be seen that when assembled the shoulders 9 and 10 abut the exterior of the upright 1 above and below the ends of the slot portions 4 and 5 thus providing a pair of spaced apart bearing surfaces to resist up and down forces which may be applied to the joint when in service. It will also be noted that as the length of the tongue 8 from the shoulders to the tongue free end exceeds the diameter of the upright, when the transom tongue is inserted through the slots in the upright the free end of the blades will project beyond the slot 2. This provides tails 12 and 13 to be curled back so as to lie firmly against the peripheral surface of the upright 1 adjacent the slot 2.
  • the widths of the tongue 8 at the shoulder location and at a location spaced therefrom the same as the upright diameter are slightly greater than the spacing between the ends of the slot portions 4 and 5, and the length of the slot 2.
  • the joint is simple and inexpensive to create.
  • the upright slots are formed in a simple punching operation and the tongue and shoulders are likewise formed in a simple flattening and notching operation.
  • the actual formation of the joint by the turning over of the blade ends 12 and 13 can be readily achieved using known techniques.
  • first and second members not tubular and not of circular cross-section.
  • connection between the members by the tongue and slot described without a supplementing wedge connection which reinforces the zone where the blade merges into its associated member, thereby to provide additional strength to resist lateral forces on that member.
  • the tongue Whilst the presently preferred arrangement provides for the tongue to be tapered in its length direction a joint with adequate performance could be formed using a tongue which has parallel edges.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

Dans un raccordement entre deux éléments d'échafaudage allongés (1, 7), une languette (8) d'un élément (7) est introduite avec un ajustage sensiblement serré dans une fente allongée (2, 3) dans l'autre élément (1), qui s'étend dans le sens longitudinal de cet autre élément (1). Des moyens à épaulement (9, 10) situés sur l'élément à languette (7) sont appliqués contre l'autre élément (1) lorsque les parties terminales (12, 13) de la languette (8), s'étendant au-delà de l'autre élément (1), sont repliés en arrière pour s'appliquer contre l'autre élément (1).
PCT/AU1991/000033 1990-02-05 1991-01-30 Ameliorations apportees aux raccords d'echafaudages WO1991011573A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPJ8452 1990-02-05
AUPJ845290 1990-02-05

Publications (1)

Publication Number Publication Date
WO1991011573A1 true WO1991011573A1 (fr) 1991-08-08

Family

ID=3774486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1991/000033 WO1991011573A1 (fr) 1990-02-05 1991-01-30 Ameliorations apportees aux raccords d'echafaudages

Country Status (1)

Country Link
WO (1) WO1991011573A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481133A (zh) * 2014-11-24 2015-04-01 广西大学 一种脚手架的安装件

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701167A (en) * 1951-02-13 1955-02-01 Universal Mfg Co Bracing for scaffolds and the like
AU3385157A (en) * 1957-12-16 1958-06-19 Triangular skeleton frame for walls and method of constructing same
US3529857A (en) * 1968-05-14 1970-09-22 Osullivan Ind Inc Lock joint connection for tubing
AU3164777A (en) * 1976-12-22 1979-06-21 Me BONUGLI D. J. PARIVESH. L. AND MIDDLETON SE Interconnection of structural members
EP0110528A1 (fr) * 1982-10-13 1984-06-13 J.R. Commercial Enterprises Limited Structures tubulaires ainsi que jonction pour membres tubulaires
AU2809784A (en) * 1984-02-29 1985-09-05 Ulrich Layher Metal tube structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701167A (en) * 1951-02-13 1955-02-01 Universal Mfg Co Bracing for scaffolds and the like
AU3385157A (en) * 1957-12-16 1958-06-19 Triangular skeleton frame for walls and method of constructing same
US3529857A (en) * 1968-05-14 1970-09-22 Osullivan Ind Inc Lock joint connection for tubing
AU3164777A (en) * 1976-12-22 1979-06-21 Me BONUGLI D. J. PARIVESH. L. AND MIDDLETON SE Interconnection of structural members
EP0110528A1 (fr) * 1982-10-13 1984-06-13 J.R. Commercial Enterprises Limited Structures tubulaires ainsi que jonction pour membres tubulaires
AU2809784A (en) * 1984-02-29 1985-09-05 Ulrich Layher Metal tube structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481133A (zh) * 2014-11-24 2015-04-01 广西大学 一种脚手架的安装件

Similar Documents

Publication Publication Date Title
US6463711B1 (en) Construction hanger
JP6427163B2 (ja) 涙滴状切込み及びオフセットした切込み付きブリッジコネクタ
US5642957A (en) Tubular member connector
EP1712862A2 (fr) Fabrication d'un tube métallique brasé d'échangeur de chaleur
CA2130048C (fr) Articulation a souder utilisee pour joindre les elements d'une main courante
US2990203A (en) Extruded connecting tees for scaffolding
US6203239B1 (en) Wedge plug tubing connector
US4603756A (en) Metal pipe scaffolding
JP4659152B2 (ja) 管継手
EP2510167B1 (fr) Agrafe de jonction
RU2449200C2 (ru) Зубчатый сегмент зубчатого хомута и соответствующий зубчатый хомут
CA1181566A (fr) Tube-support pour ensemble tubulaire, et methode de fabrication connexe
US2126519A (en) Method of forming intersections for joining structural members
WO1991011573A1 (fr) Ameliorations apportees aux raccords d'echafaudages
US5893675A (en) Tubular member connector
WO2006045415A1 (fr) Tube en produit metallique profile et procede de production
US1920449A (en) Pipe joint
US4565296A (en) Cooking pans
KR100642203B1 (ko) 로킹부를 갖는 파형관용 커넥터
EP0664094B1 (fr) Membre latéral fabriqué à partir d'un élément de section tubulaire pour joindre les montants d'étagères métalliques
US2787039A (en) Hose clamp
EP0690187B1 (fr) Console d'échafaudage
FR2886069A1 (fr) Chemin de cables comprenant une eclisse et procede d'assemblage d'un tel chemin de cables
WO1995020081A1 (fr) Ossature
KR200339312Y1 (ko) 용접 결합없이 조립가능한 난간 동자

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

NENP Non-entry into the national phase

Ref country code: CA