EP0005418B1 - Elément de fixation pour grilles transmettant les charges - Google Patents

Elément de fixation pour grilles transmettant les charges Download PDF

Info

Publication number
EP0005418B1
EP0005418B1 EP79850038A EP79850038A EP0005418B1 EP 0005418 B1 EP0005418 B1 EP 0005418B1 EP 79850038 A EP79850038 A EP 79850038A EP 79850038 A EP79850038 A EP 79850038A EP 0005418 B1 EP0005418 B1 EP 0005418B1
Authority
EP
European Patent Office
Prior art keywords
fastening element
gratings
steel members
edge steel
edge
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
Application number
EP79850038A
Other languages
German (de)
English (en)
Other versions
EP0005418A2 (fr
EP0005418A3 (en
Inventor
Johnny Hakansson
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.)
Weland & Soner AB
Original Assignee
Weland & Soner 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 Weland & Soner AB filed Critical Weland & Soner AB
Priority to AT79850038T priority Critical patent/ATE140T1/de
Publication of EP0005418A2 publication Critical patent/EP0005418A2/fr
Publication of EP0005418A3 publication Critical patent/EP0005418A3/xx
Application granted granted Critical
Publication of EP0005418B1 publication Critical patent/EP0005418B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/42—Gratings; Grid-like panels
    • E04C2/428—Separate connecting means, e.g. connecting gratings to underlying structure

Definitions

  • a bracket or fastener has to be mounted on one grating either before or after laying the grating but always before the adjacent grating is laid because a supporting side steel bar of the latter grating will be brought in position to rest on a free lower lug of the mounted bracket, whereupon a free upper lug of the bracket is bent over said supporting side steel bar.
  • Another prior art fastener is shown in GB­A­-1,412,453.
  • the present invention has for its object to provide a simple fastening element which after the laying of the gratings can be mounted in a simple manner without making it necessary to lift the gratings in relation to each other or to insert the fastening element from below.
  • the fastening element which is adapted to extend downwards between the edge steel members of two juxtaposed gratings, is substantially I-shaped having upper and lower flanges and a web between the flanges said web being of substantially the same length as the height of the edge steel members at right angles to the plane of the gratings, the lower flange of the fastening element being formed as an engaging surface for engaging the edge steel members of the gratings, while the upper flange of the fastening element has holding lugs which are bent outwardly in one direction substantially at right angles to the plane of a side face of the upper flange, and which, after the mounting of the fastening element by downward bending of the upper flange to bring said side face into engagement with the upper edges of the edge steel members, are adapted to project downwardly outside the remote side faces of the two edge steel members.
  • Fig. 4 shows two gratings 10, 11 which are placed in juxtaposition.
  • the gratings consist of a series of juxtaposed supporting steel members 12, 13 which are interconnected by means of transverse rods 14 spaced suitable distances apart along the upper sides of the supporting steel members 12, 13.
  • the supporting steel members and the transverse rods can be interconnected by pressure welding.
  • the transverse rods are of square cross-section, the rods being twisted in their longitudinal direction.
  • the outer longitudinal supporting steel members 13 will hereinafter be designated “edge steel members”.
  • the supporting steel members 12 and the edge steel members 13 rest freely on seatings (not shown).
  • the gratings can therefore move vertically in relation to each other if the gratings are subjected to different loads or if only one of the gratings is subjected to load.
  • the grating 11 is loaded in the direction of the arrow 15 the grating, if no special measures were taken, would sink a rather considerable distance down below the level of the grating 10, particularly if the gratings have been given too slender dimensions or have large free span widths.
  • Figs. 1-3 show an embodiment of a fastening element 16 according to the invention.
  • the fastening element is punched from a flat piece of sheet metal approximately into I-shape having upper and lower bars or flanges 17 and 18, respectively, with a web 19 therebetween.
  • the upper flange 18 of the fastening element has outwardly bent holding lugs 20 which have been bent at right angles in one direction from the flat piece of sheet metal.
  • the lower flange 17 has upper engaging edge surfaces 21 onwhich the edge steel members 13 of the juxtaposed gratings 10, 11 are adapted to rest.
  • the edge surfaces 22 of the upper flange 18, which face the engaging edge surfaces 21, are cut obliquely outwardly and upwardly at an angle of say 15° to a normal of the web 19.
  • the lower flange 17 has been given a larger height than the thickness of the piece of sheet metal so that the lower flange 17 can fulfill its task of a supporting cross beam in a better way.
  • the distance between the lower and upper flanges 17, 18, i.e. the length of the web 19, is so adapted to the height of the edge steel members 13 that said steel members will be retained between the lower flange 17 and the upper flange 18 after the latter has been bent down, in connection with the mounting, into the position shown in Figs. 4-6, where the holding lugs project downwardly on either side of the edge steel members 13, thereby fixing the fastening element in position and preventing rotation of said element.
  • the fastening element according to the invention is preferably manufactured from stainless steel instead of ordinary hot-galvanized steel since the zinc layer of a hot-galvanized fastening element might crack, with resulting corrosion of the fastening element.
  • the fastening element is manufactured in different sizes with regard to the heights of the supporting steel members and edge steel members of the gratings.
  • the fastening element can be realized after the gratings have already been brought into position. It is not necessary to raise, the gratings, and neither need the fastening element be inserted in position from below.
  • a screw driver to bend apart the edge steel members 13 of the gratings 10, 11 sufficiently for the fastening element, which at this time is of the appearance illustrated in Figs. 1-3, to be pushed down between the edge steel members 13, the lower flange 17 being parallel with the edge steel members 13.
  • the fastening element After the fastening element has been moved a sufficient distance downwards, the element is turned so that the lower flange 17 will extend transversely of the longitudinal direction of the edge steel members 13.
  • the upwardly projecting upper flange 18 is hammered down into the position shown in Figs. 4-6.
  • the upper flange is hammered down in this way use can be made of a screw driver to keep the fastening element in the correct position, with the lower flange 17 directed transversely of the edge steel members 13. if the fastening element is retained in this way the play between the fastening element and the edge steel members 13 will be the smallest possible.
  • the fastening elements can be mounted spaced 3 to 4 drn apart, and normally use can be made of two to four fastening elements per length of grating, depending upon the span width and the permissible load.
  • the sloping surfaces 22 at the lower edge of the upper flange 18 facilitate turning the fastening element 16 during mounting since the surfaces 22 owing to their obliquity will function as guiding cam surfaces.
  • the downwardly bent upper flange 18 is first bent up with the aid of a screw driver into upright position and then the fastening element is rotated through a quarter of a turn with the aid of a pair of tongs or other tool so that the lower flange 17 of the fastening element can be withdrawn from between the two edge steel members 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Sewage (AREA)
  • Floor Finish (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)

Claims (3)

1. Elément de fixation (16) destiné à raccorder des grilles juxtaposées (10, 11) disposées entre des sièges et ayant des organes latéraux (13) d'acier sur leurs bords latéraux, entre les sièges, l'élément de fixation étant destiné à descendre entre les organes latéraux de deux grilles juxtaposées, caractérisé en ce que l'élément de fixation (16) a sensiblement une forme en ayant des barres terminales supérieure et inférieure (18, 17) et une barre centrale (19) placée entre les barres terminales, la barre centrale ayant une longueur pratiquement égale à la hauteur des organes latéraux, mesurée perpendiculairement au plan des grilles, la barre terminale inférieure (17) de l'élément de fixation ayant une surface (21) de contact avec les organes latéraux (13) des grilles, alors que la barre terminale supérieure (18) de l'élément a des ailes (20) de maintien qui sont repliées vers l'extérieur d'un même côté, sensiblement perpendiculairement au plan d'une face latérale de la barre terminale supérieure et qui, après le montage de l'élément de fixation par pliage vers le bas de la barre terminale supérieure (18) afin que la face latérale vienne contre les bords supérieures des organes latéraux (13), sont destinées à dépasser vers le base en dehors des faces latérales opposées des deux organes latéraux (13).
2. Elément de fixation selon la revendication 1, caractérisé en ce que la barre terminale inférieure (17) a une hauteur supérieure à son épaisseur.
3. Elément de fixation selon l'une des revendications 1 et 2, caractérisé en ce que les surfaces latérales (22) de la barre terminale supérieure (18) qui, avant le montage de l'élément (16) de fixation, se trouvent en face des surfaces (21) de coopération de la barre terminale inférieure (17), sont inclinées vers le haut et vers l'extérieur à partir de la barre centrale (19) de l'élément de -fixation.
EP79850038A 1978-05-03 1979-05-02 Elément de fixation pour grilles transmettant les charges Expired EP0005418B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79850038T ATE140T1 (de) 1978-05-03 1979-05-02 Lastuebertragendes befestigungselement fuer gitterroste.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7805099 1978-05-03
SE7805099A SE406345B (sv) 1978-05-03 1978-05-03 Festdon for lastoverforing mellan gallerdurkar

Publications (3)

Publication Number Publication Date
EP0005418A2 EP0005418A2 (fr) 1979-11-14
EP0005418A3 EP0005418A3 (en) 1979-11-28
EP0005418B1 true EP0005418B1 (fr) 1981-08-05

Family

ID=20334832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79850038A Expired EP0005418B1 (fr) 1978-05-03 1979-05-02 Elément de fixation pour grilles transmettant les charges

Country Status (4)

Country Link
EP (1) EP0005418B1 (fr)
AT (1) ATE140T1 (fr)
DE (1) DE2960560D1 (fr)
SE (1) SE406345B (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640173A (en) * 1969-09-18 1972-02-08 Curt G Muller Fastener means
ZA721544B (en) * 1972-03-07 1972-12-27 A Mentis Improvements relating to metal grids
SE7403682L (fr) * 1974-03-19 1975-09-22 Hefla Bruks Ab

Also Published As

Publication number Publication date
SE406345B (sv) 1979-02-05
ATE140T1 (de) 1981-08-15
DE2960560D1 (en) 1981-11-05
EP0005418A2 (fr) 1979-11-14
EP0005418A3 (en) 1979-11-28

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