EP1094175A1 - Fastening device of diagonal bars on scaffolding ladders and scaffolding obtained - Google Patents

Fastening device of diagonal bars on scaffolding ladders and scaffolding obtained Download PDF

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Publication number
EP1094175A1
EP1094175A1 EP00402736A EP00402736A EP1094175A1 EP 1094175 A1 EP1094175 A1 EP 1094175A1 EP 00402736 A EP00402736 A EP 00402736A EP 00402736 A EP00402736 A EP 00402736A EP 1094175 A1 EP1094175 A1 EP 1094175A1
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EP
European Patent Office
Prior art keywords
scaffolding
diagonal
clamp
bars
jaws
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.)
Granted
Application number
EP00402736A
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German (de)
French (fr)
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EP1094175B1 (en
Inventor
Francis Manier
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.)
Tubesca SA
Tubesca SA France
Original Assignee
Tubesca SA
Tubesca SA France
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Publication date
Application filed by Tubesca SA, Tubesca SA France filed Critical Tubesca SA
Priority to DK00402736T priority Critical patent/DK1094175T3/en
Publication of EP1094175A1 publication Critical patent/EP1094175A1/en
Application granted granted Critical
Publication of EP1094175B1 publication Critical patent/EP1094175B1/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/16—Struts or stiffening rods, e.g. diagonal rods
    • 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
    • E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
    • E04G7/305—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect without tying means for connecting the bars or members

Definitions

  • the invention relates to a device for fixing the diagonal bars on the scaffolding ladders and the scaffolding obtained.
  • the invention aims to remedy this drawback and proposes a fixing device for the diagonal bars of the scaffolding ladders, for scaffolding comprising at least two post ladders and tubular rungs and round or close section, the ladders being connected to each other vertically by at least two bars diagonally fixed crosswise and on each side of the scaffolding, the bars being fixed by their ends to ladder rungs, characterized in what it includes a set of pliers hinged each to a end of the diagonal bars, each clamp having two upright grip jaws arranged on either side of its axis of articulation to the bar, these jaws being distant from one another at least the width or diameter of the ladder post tubes and at most, with a small clearance, the width of the rung on the upright, so that the clamp can be engaged laterally on the upright, at level of a selected rung and be maneuvered in rotation up to that its jaws engage on the upright, at the levels upper and lower relative to the rung, while this rung is enclosed by said slight clearance between the jaws.
  • Said jaws are advantageously arranged on the body of the pliers in a configuration suitable for ensuring two sockets on the opposite or even diametrically opposite uprights relative to the axis of articulation of the clamp.
  • the lateral grip of the clamp being substantially that of the amount, even very slightly greater (of the thickness of the branch jaw), it does not interfere with the implantation of the upper plateau on the mounting step of the diagonal bars, unlike corresponding conventional devices.
  • the hinge pin of the clamp can be provided with a pin element projecting inwards (jaw side) and suitable for being received in the hole external rung type rungs crimped on the upright.
  • This axis element can be coated with an intermediate sheath favoring the engagement and positioning of the axis element in the rung hole.
  • the clamp is advantageously formed in one piece comprising a plate element and two U-shaped jaws, formed at each end of the plate, the hinge pin being able to be consisting of a simple drilling hole or an axis element turned in inward projection, as mentioned above, positioned at the median level of the plate element and receiving a fixing and articulation bolt to the diagonal bar.
  • At least one of the jaws and preferably both can (wind) include a part of the clamp facing inward in its part end and snap-in socket (by elastic bending of the part of clamp) on the ladder post, so that the socket lock on the amount of scale is automatic and easy.
  • Said clamp may be made from a steel sheet 2 mm thick, suitably cut and stamped, the end return of said part of pliers being slightly curved to form a point of hard passage and locking of the socket on the upright.
  • the invention also relates to a scaffolding fitted with a device for fixing the diagonal bars of ladders according to the invention.
  • a scaffold 1 equipped with a device for fixing the bars diagonals 3 of scales according to the invention is shown partially to Figure 1.
  • This scaffolding consists essentially of two scales vertical 5, a support plate 7 for people, two rails horizontal spacers fixed laterally to them (not shown), two diagonal bars 3 mounted in a cross, one of each side, fixed to the ladder uprights at selected rungs 11 and lateral stabilizer bars 13 bearing on the ground.
  • a single diagonal bar 3 is shown.
  • Ladders 5 are of the upright and rung type tubular round, the rungs 11 being crimped on the uprights 9 (by an enlarged internal end base 15 and a crimping rim external 17).
  • the device of the invention relates to the diagonal bars which provide rigid vertical support for the ladders 5 of the scaffolding. he includes clamps mounted individually at each end of the bars diagonals 3 and allowing attachment to the uprights 9 of the ladder.
  • the set comes from a 2 mm thick steel plate suitably cut and stamped.
  • the jaws 29 project laterally on the same side of the body. They are U-shaped, identical to each other and open one opposite the other.
  • the jaw branch 31 away from the body is slightly curved inward, terminated by a leg 33 facing outside.
  • the inner curve of this branch 31 corresponds to the section of the upright tube 9 of the scales (all identical) and the distance from the tab 33 to the plane of the body 25 determining the opening of jaws is slightly less than the diameter of the upright tube of scale. This conformation allows the commitment on the amount with slight elastic bending of the jaw branch 31 as it passes this tab on the upright. This commitment is described later.
  • the articulated mounting of the clamp 19 on the diagonal bar 3 is ensured by means of a roller element 35 forming an axis element in protrusion on the jaw side.
  • This element is clamped on the plane of the body 25 by the nut of the articulation bolt 21.
  • the roller 35 is preferably coated with a sheath with a diameter equal to that of the tube hole step 11, which is as shown set by its end at the upright 9 of scale, being slightly flattened on the inside by its base 15 supported on the upright and clamped by an external flange 17 crimped on outside.
  • the sheath favors the introduction and the adjusted maintenance of the axis element 35 projecting into the rung hole 37.
  • the branches 31 of the jaws extend parallel to each other, at a distance greater than or equal to diameter of the tube of the ladder posts 9 and equal to a small clearance near the internal enlargement of the base 15 of support of the rung end set on the upright.
  • the rung tube 11 is in fact widened to allow support against the upright tube 9 tightened by crimping external. All the rungs are deformed and widened at their base so identical against the amount.
  • the jaw openings are opposite each other.
  • the assembly of the diagonal bars 3 is very simple. It is enough engage each clamp 19 at the end of a bar on an upright scale, at a chosen level 11, by introducing the element axis 35 in the corresponding rung hole 37, the clamp being turned substantially perpendicular to the upright to allow lateral engagement.
  • the jaw branches 31 thus pass from each side of the upright tube and the axle element 35 is pressed into the rung hole 37.
  • the internal plane of the body 25 of the clamp abuts against the surface of the upright tube. It is then turn the clamp according to arrows (figure 2) to engage simultaneously the jaws 29 engaged on the upright tube.
  • the clamp is in end of assembly with its body substantially parallel to the upright. At this moment, the jaw branches 31 grip the play with little play widened base 15 of the rung and the jaws are in locked engagement (by clipping) to the upright.
  • the catch is therefore operated on the rung and the amount.
  • the lateral dimensions of the socket are minimal, corresponding to the thickness of the branch (2 mm) and does not interfere with positioning support plate 7 on this rung.
  • the locking of the socket is obtained by snap-fitting with slight bending of the jaw branches 31 at the rotation passage of the legs bent 33 on the upright tube.
  • the assembly is therefore automatic and fast, being executed on the two end clamps of the same bar on one side of the scaffolding.
  • the assembly of the other diagonal bar on the other side of the scaffolding (not shown) is done the same way.
  • the disassembly of the bars is obtained by a reverse operation pliers.
  • the invention thus provides a simple, economical and easy to use for fixing diagonal bars to ladders scaffolding.
  • the section of the ladder uprights is not necessarily circular. It can be rounded, in ellipse for example. It suffices in this case to adapt the shape of the branches of the jaws to that of the tube upright, while retaining a curved end tab for the jaw locking snap on the upright.
  • the jaws are not necessarily identical and the one on both can lock the stud, which can be also provided by a means other than snap-fastening.
  • the projecting axis element can be eliminated and the device can be applied to ladders with steps not necessarily crimped on the uprights.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Abstract

Fixing assembly for diagonal bars (3) on a scaffolding comprises a clamp (19) at each end of the bars, each clamp having a jaw (29) to receive the mounting rod at the contact point with an horizontal bar. An Independent claim is also included for the scaffolding.

Description

L'invention concerne un dispositif de fixation des barres diagonales sur les échelles d'échafaudage et l'échafaudage obtenu.The invention relates to a device for fixing the diagonal bars on the scaffolding ladders and the scaffolding obtained.

Actuellement, les barres diagonales de liaison transversale des échelles d'échafaudage sont fixées pour la plupart au moyen de crochets à mâchoire mobile en prise sur les échelons d'échelle. Ces systèmes bien qu'ils soient autobloquants, dépassent des échelons de prise vers le haut et empêchent le positionnement du plateau d'échafaudage sur ces échelons.Currently, the diagonal bars of transverse connection of scaffolding ladders are mostly fixed with hooks with movable jaw engaged on ladder rungs. These systems although they are self-locking, exceed steps of catch towards the top and prevent positioning of the scaffolding plate on these rungs.

L'invention vise à remédier à cet inconvénient et propose un dispositif de fixation des barres diagonales des échelles d'échafaudage, pour un échafaudage comportant au moins deux échelles à montants et échelons tubulaires et de section ronde ou proche, les échelles étant reliées l'une à l'autre verticalement par au moins deux barres diagonales fixées en croix et de chaque côté de l'échafaudage, les barres étant fixées par leurs extrémités à des échelons d'échelle, caractérisé en ce qu'il comprend un ensemble de pinces articulées chacune à une extrémité des barres diagonales, chaque pince comportant deux mâchoires de prise du montant disposées de part et d'autre de son axe d'articulation à la barre, ces mâchoires étant distantes l'une de l'autre d'au moins la largeur ou le diamètre des tubes de montant d'échelle et d'au plus, à faible jeu près, la largeur de l'échelon sur le montant, de sorte que la pince peut être engagée latéralement sur le montant, au niveau d'un échelon sélectionné et être manoeuvrée en rotation jusqu'à ce que ses mâchoires viennent en prise sur le montant, aux niveaux supérieur et inférieur relativement à l'échelon, tandis que cet échelon est enserré audit faible jeu entre les mâchoires.The invention aims to remedy this drawback and proposes a fixing device for the diagonal bars of the scaffolding ladders, for scaffolding comprising at least two post ladders and tubular rungs and round or close section, the ladders being connected to each other vertically by at least two bars diagonally fixed crosswise and on each side of the scaffolding, the bars being fixed by their ends to ladder rungs, characterized in what it includes a set of pliers hinged each to a end of the diagonal bars, each clamp having two upright grip jaws arranged on either side of its axis of articulation to the bar, these jaws being distant from one another at least the width or diameter of the ladder post tubes and at most, with a small clearance, the width of the rung on the upright, so that the clamp can be engaged laterally on the upright, at level of a selected rung and be maneuvered in rotation up to that its jaws engage on the upright, at the levels upper and lower relative to the rung, while this rung is enclosed by said slight clearance between the jaws.

Lesdites mâchoires sont avantageusement disposées sur le corps de la pince dans une configuration propre à assurer deux prises sur le montant opposées, voire diamétralement opposées relativement à l'axe d'articulation de la pince.Said jaws are advantageously arranged on the body of the pliers in a configuration suitable for ensuring two sockets on the opposite or even diametrically opposite uprights relative to the axis of articulation of the clamp.

Il résulte de cette disposition que les barres diagonales ainsi équipées des pinces selon l'invention se fixent automatiquement par simple engagement latéral de la pince sur le montant et une rotation subséquente de celle-ci, sensiblement d'un quart de tour, et donc sans accessoires susceptibles d'être dispersés et perdus. On obtient ainsi une bonne solidarisation de la barre au montant et à l'échelon d'échelle. avec des points de fixation rigides de la liaison en croix des échelles pour leur positionnement vertical en vue de la sustentation d'un plateau supérieur.It follows from this arrangement that the diagonal bars thus equipped with clamps according to the invention are fixed automatically by simple lateral engagement of the clamp on the upright and a rotation subsequent to it, substantially a quarter turn, and therefore without accessories likely to be dispersed and lost. We thus obtain a good connection of the bar to the upright and to the rung of the ladder. with rigid fixing points for the cross connection of the ladders for their vertical positioning for the lift of a upper shelf.

En outre, l'emprise latérale de la pince étant sensiblement celle du montant, voire très légèrement supérieure (de l'épaisseur de la branche de mâchoire), elle ne gène pas l'implantation du plateau supérieur sur l'échelon de fixation des barres diagonales, contrairement aux dispositifs classiques correspondants.In addition, the lateral grip of the clamp being substantially that of the amount, even very slightly greater (of the thickness of the branch jaw), it does not interfere with the implantation of the upper plateau on the mounting step of the diagonal bars, unlike corresponding conventional devices.

Naturellement, dans cette disposition, il est nécessaire que les mâchoires viennent en prise sur le montant de part et d'autre d'un échelon de largeur supérieure ou égale à celle des montants, au moins pour sa base d'appui sur le montant.Naturally, in this provision, it is necessary that the jaws engage on the upright on either side of a step of width greater than or equal to that of the uprights, at least for its support base on the upright.

L'axe d'articulation de la pince peut être pourvu d'un élément d'axe en saillie vers l'intérieur (côté mâchoires) et apte à être reçu dans le trou externe d'échelon des échelles de type à échelons sertis sur le montant.The hinge pin of the clamp can be provided with a pin element projecting inwards (jaw side) and suitable for being received in the hole external rung type rungs crimped on the upright.

Cet élément d'axe peut être revêtu d'une gaine intermédiaire favorisant l'engagement et l'assise de positionnement de l'élément d'axe dans le trou d'échelon.This axis element can be coated with an intermediate sheath favoring the engagement and positioning of the axis element in the rung hole.

La pince est avantageusement formée en une seule pièce comportant un élément de plaque et deux mâchoires à forme de U, formées à chaque bout de la plaque, l'axe d'articulation pouvant être constitué par un simple trou de perçage ou un élément d'axe tourné en saillie vers l'intérieur, tel que précité, positionné au niveau médian de l'élément de plaque et recevant un boulon de fixation et d'articulation à la barre diagonale.The clamp is advantageously formed in one piece comprising a plate element and two U-shaped jaws, formed at each end of the plate, the hinge pin being able to be consisting of a simple drilling hole or an axis element turned in inward projection, as mentioned above, positioned at the median level of the plate element and receiving a fixing and articulation bolt to the diagonal bar.

Au moins l'une des mâchoires et de préférence les deux peut (vent) comprendre une partie de pince tournée vers l'intérieur dans sa partie d'extrémité et à prise d'encliquetage (par flexion élastique de la partie de pince) sur le montant d'échelle, de sorte que le verrouillage de prise sur le montant d'échelle est automatique et aisé.At least one of the jaws and preferably both can (wind) include a part of the clamp facing inward in its part end and snap-in socket (by elastic bending of the part of clamp) on the ladder post, so that the socket lock on the amount of scale is automatic and easy.

Ladite pince peut être issue d'une tôle d'acier de 2 mm d'épaisseur, convenablement découpée et emboutie, le retour d'extrémité de ladite partie de pince étant faiblement recourbé pour former un point de passage dur et de verrouillage de la prise sur le montant.Said clamp may be made from a steel sheet 2 mm thick, suitably cut and stamped, the end return of said part of pliers being slightly curved to form a point of hard passage and locking of the socket on the upright.

L'invention concerne également un échafaudage équipé d'un dispositif de fixation des barres diagonales d'échelles selon l'invention. The invention also relates to a scaffolding fitted with a device for fixing the diagonal bars of ladders according to the invention.

L'invention est illustrée ci-après à l'aide d'un exemple de réalisation, décrit à titre non limitatif et en référence aux dessins annexés, sur lesquels :

  • la figure 1 est une vue partielle en perspective latérale d'un échafaudage équipé d'un dispositif selon l'invention,
  • la figure 2 est une vue agrandie en perspective de la pince articulée du dispositif de fixation des barres diagonales d'échelles selon l'invention, et
  • la figure 3 est une vue en coupe de dessus de cette pince montée sur un montant d'échelle d'échafaudage.
The invention is illustrated below using an embodiment, described without limitation and with reference to the accompanying drawings, in which:
  • FIG. 1 is a partial side perspective view of a scaffold fitted with a device according to the invention,
  • FIG. 2 is an enlarged perspective view of the articulated clamp of the device for fixing the diagonal bars of ladders according to the invention, and
  • Figure 3 is a top sectional view of this clamp mounted on a scaffold ladder upright.

Un échafaudage 1 équipé d'un dispositif de fixation des barres diagonales 3 d'échelles selon l'invention est représenté partiellement à la figure 1. Cet échafaudage comprend essentiellement deux échelles verticales 5, un plateau support 7 des personnes, deux lisses inférieures d'écartement horizontales fixées latéralement à celles-ci (non représentées), deux barres diagonales 3 montées en croix, une de chaque côté, fixées aux montants d'échelles à des échelons sélectionnés 11 et des barres stabilisatrices latérales 13 en appui sur le sol.A scaffold 1 equipped with a device for fixing the bars diagonals 3 of scales according to the invention is shown partially to Figure 1. This scaffolding consists essentially of two scales vertical 5, a support plate 7 for people, two rails horizontal spacers fixed laterally to them (not shown), two diagonal bars 3 mounted in a cross, one of each side, fixed to the ladder uprights at selected rungs 11 and lateral stabilizer bars 13 bearing on the ground.

Une seule barre diagonale 3 est représentée.A single diagonal bar 3 is shown.

Les échelles 5 sont de type à montants et échelons de section tubulaire ronde, les échelons 11 étant sertis sur les montants 9 (par une base d'extrémité interne élargie 15 et un rebord de sertissage externe 17).Ladders 5 are of the upright and rung type tubular round, the rungs 11 being crimped on the uprights 9 (by an enlarged internal end base 15 and a crimping rim external 17).

Le dispositif de l'invention concerne les barres diagonales qui assurent le maintien vertical rigide des échelles 5 de l'échafaudage. Il comporte des pinces montées à l'unité à chaque extrémité des barres diagonales 3 et permettant la prise de fixation aux montants 9 d'échelle.The device of the invention relates to the diagonal bars which provide rigid vertical support for the ladders 5 of the scaffolding. he includes clamps mounted individually at each end of the bars diagonals 3 and allowing attachment to the uprights 9 of the ladder.

Ces pinces 19 toutes identiques sont montées articulées au moyen d'un boulon 21 engagé sur un plat d'extrémité 23 des barres diagonales.These identical clamps 19 are mounted articulated by means a bolt 21 engaged on an end plate 23 of the bars diagonals.

Elles comportent un corps plat rectangulaire 25, percé d'un trou d'axe 27 en son milieu, et deux mâchoires 29 solidaires du corps 25 disposées de part et d'autre du trou d'axe 27 et à égale distance de ce dernier. L'ensemble est issu d'une plaque en acier d'épaisseur 2 mm convenablement découpée et emboutie.They have a rectangular flat body 25, pierced with a hole axis 27 in the middle, and two jaws 29 integral with the body 25 arranged on either side of the axis hole 27 and at equal distance from this latest. The set comes from a 2 mm thick steel plate suitably cut and stamped.

Les mâchoires 29 font saillie latéralement d'un même côté du corps. Elles sont en forme de U, identiques l'une à l'autre et ouvertes l'une à l'opposé de l'autre.The jaws 29 project laterally on the same side of the body. They are U-shaped, identical to each other and open one opposite the other.

La branche de mâchoire 31 éloignée du corps est légèrement courbée vers l'intérieur, terminée par une patte 33 tournée vers l'extérieur. Le galbe intérieur de cette branche 31 correspond à la section du tube de montant 9 des échelles (tous identiques) et la distance de la patte 33 au plan du corps 25 déterminant l'ouverture de mâchoires est légèrement inférieure au diamètre du tube de montant d'échelle. Cette conformation permet l'engagement sur le montant avec légère flexion élastique de la branche de mâchoire 31 au passage de cette patte sur le montant. Cet engagement est décrit ultérieurement.The jaw branch 31 away from the body is slightly curved inward, terminated by a leg 33 facing outside. The inner curve of this branch 31 corresponds to the section of the upright tube 9 of the scales (all identical) and the distance from the tab 33 to the plane of the body 25 determining the opening of jaws is slightly less than the diameter of the upright tube of scale. This conformation allows the commitment on the amount with slight elastic bending of the jaw branch 31 as it passes this tab on the upright. This commitment is described later.

Le montage articulé de la pince 19 sur la barre diagonale 3 est assuré au moyen d'un élément de rouleau 35 formant élément d'axe en saillie du côté mâchoires. Cet élément est serré en appui sur le plan du corps 25 par l'écrou du boulon d'articulation 21. Le rouleau 35 est de préférence revêtu d'une gaine de diamètre égal à celui du trou du tube d'échelon 11, lequel est comme indiqué serti par son extrémité au montant 9 d'échelle, étant légèrement aplati sur l'intérieur par sa base 15 en appui sur le montant et serré par un rebord externe 17 serti sur l'extérieur. La gaine favorise l'introduction et le maintien ajusté de l'élément d'axe 35 en saillie dans le trou d'échelon 37.The articulated mounting of the clamp 19 on the diagonal bar 3 is ensured by means of a roller element 35 forming an axis element in protrusion on the jaw side. This element is clamped on the plane of the body 25 by the nut of the articulation bolt 21. The roller 35 is preferably coated with a sheath with a diameter equal to that of the tube hole step 11, which is as shown set by its end at the upright 9 of scale, being slightly flattened on the inside by its base 15 supported on the upright and clamped by an external flange 17 crimped on outside. The sheath favors the introduction and the adjusted maintenance of the axis element 35 projecting into the rung hole 37.

Il est à noter que les branches 31 des mâchoires s'étendent parallèlement l'une à l'autre, à une distance supérieure ou égale au diamètre du tube des montants 9 d'échelle et égale à faible jeu près à l'élargissement intérieur de la base 15 d'appui de l'extrémité d'échelon serti sur le montant. Le tube d'échelon 11 est en effet élargi pour permettre l'appui contre le tube de montant 9 serré par sertissage externe. Tous les échelons sont déformés et élargis à leur base de façon identique contre le montant. Les ouvertures des mâchoires sont opposées l'une à l'autre.It should be noted that the branches 31 of the jaws extend parallel to each other, at a distance greater than or equal to diameter of the tube of the ladder posts 9 and equal to a small clearance near the internal enlargement of the base 15 of support of the rung end set on the upright. The rung tube 11 is in fact widened to allow support against the upright tube 9 tightened by crimping external. All the rungs are deformed and widened at their base so identical against the amount. The jaw openings are opposite each other.

Le montage des barres diagonales 3 est très simple. Il suffit d'engager chaque pince 19 d'extrémité d'une barre sur un montant d'échelle, au niveau d'un échelon choisi 11, en introduisant l'élément d'axe 35 dans le trou d'échelon correspondant 37, la pince étant tournée sensiblement perpendiculairement au montant pour permettre l'engagement latéral. Les branches de mâchoire 31 passent ainsi de chaque côté du tube de montant et l'élément d'axe 35 est enfoncé dans le trou d'échelon 37. A fond de course, le plan intérieur du corps 25 de la pince vient buter contre la surface du tube de montant. Il s'agit alors de tourner la pince selon flèches (figure 2) pour engager simultanément les mâchoires 29 en prise sur le tube de montant. La pince se trouve en fin de montage avec son corps sensiblement parallèle au montant. A ce moment, les branches de mâchoire 31 viennent enserrer à faible jeu la base élargie 15 de l'échelon et les mâchoires sont en prise verrouillée (par encliquetage) au montant.The assembly of the diagonal bars 3 is very simple. It is enough engage each clamp 19 at the end of a bar on an upright scale, at a chosen level 11, by introducing the element axis 35 in the corresponding rung hole 37, the clamp being turned substantially perpendicular to the upright to allow lateral engagement. The jaw branches 31 thus pass from each side of the upright tube and the axle element 35 is pressed into the rung hole 37. At the bottom of the race, the internal plane of the body 25 of the clamp abuts against the surface of the upright tube. It is then turn the clamp according to arrows (figure 2) to engage simultaneously the jaws 29 engaged on the upright tube. The clamp is in end of assembly with its body substantially parallel to the upright. At this moment, the jaw branches 31 grip the play with little play widened base 15 of the rung and the jaws are in locked engagement (by clipping) to the upright.

La prise est donc opérée sur l'échelon et le montant.The catch is therefore operated on the rung and the amount.

L'encombrement latéral de prise est minime, correspondant à l'épaisseur de la branche (2 mm) et ne gène pas le positionnement ultérieur du plateau support 7 sur cet échelon.The lateral dimensions of the socket are minimal, corresponding to the thickness of the branch (2 mm) and does not interfere with positioning support plate 7 on this rung.

Le verrouillage de la prise est obtenu par encliquetage avec légère flexion des branches de mâchoire 31 au passage de rotation des pattes recourbées 33 sur le tube de montant. Le montage est donc automatique et rapide, étant exécuté sur les deux pinces d'extrémité d'une même barre sur un côté de l'échafaudage. Le montage de l'autre barre de diagonale de l'autre côté de l'échafaudage (non représenté) est effectué de la même façon.The locking of the socket is obtained by snap-fitting with slight bending of the jaw branches 31 at the rotation passage of the legs bent 33 on the upright tube. The assembly is therefore automatic and fast, being executed on the two end clamps of the same bar on one side of the scaffolding. The assembly of the other diagonal bar on the other side of the scaffolding (not shown) is done the same way.

Le démontage des barres est obtenu par une manoeuvre inverse des pinces.The disassembly of the bars is obtained by a reverse operation pliers.

L'invention apporte ainsi un dispositif simple, économique et d'utilisation facile pour la fixation des barres diagonales aux échelles d'échafaudage.The invention thus provides a simple, economical and easy to use for fixing diagonal bars to ladders scaffolding.

Naturellement, des variantes de réalisation peuvent être aisément exécutées par l'homme du métier dans le cadre des revendications annexées.Naturally, variant embodiments can be easily performed by a person skilled in the art within the framework of the claims attached.

Ainsi, la section des montants d'échelle, n'est pas nécessairement circulaire. Elle peut être arrondie, en ellipse par exemple. Il suffit dans ce cas d'adapter la forme des branches des mâchoires à celle du tube de montant, tout en conservant une patte d'extrémité recourbée pour l'encliquetage de verrouillage des mâchoires sur le montant.Thus, the section of the ladder uprights, is not necessarily circular. It can be rounded, in ellipse for example. It suffices in this case to adapt the shape of the branches of the jaws to that of the tube upright, while retaining a curved end tab for the jaw locking snap on the upright.

Les mâchoires ne sont pas nécessairement identiques et l'une sur les deux peut assurer le verrouillage au montant, lequel peut être assuré également par un autre moyen que l'encliquetage.The jaws are not necessarily identical and the one on both can lock the stud, which can be also provided by a means other than snap-fastening.

Enfin, l'élément d'axe en saillie peut être éliminé et le dispositif peut s'appliquer à des échelles à échelons non nécessairement sertis sur les montants.Finally, the projecting axis element can be eliminated and the device can be applied to ladders with steps not necessarily crimped on the uprights.

Claims (10)

Dispositif de fixation des barres diagonales (3) des échelles d'échafaudage, pour un échafaudage (1) comportant au moins deux échelles (5) à montants (9) et échelons (11) tubulaires et de section ronde ou proche, les échelles (5) étant reliées l'une à l'autre verticalement par au moins deux barres diagonales (3) fixées en croix et de chaque côté de l'échafaudage, les barres (3) étant fixées par leurs extrémités à des échelons d'échelle (11), caractérisé en ce qu'il comprend un ensemble de pinces (19) articulées chacune à une extrémité des barres diagonales (3), chaque pince (19) comportant deux mâchoires (29) de prise du montant (9) disposées de part et d'autre de son axe d'articulation à la barre, ces mâchoires (29) étant distantes l'une de l'autre d'au moins la largeur ou le diamètre des tubes de montant (9) d'échelle et d'au plus, à faible jeu près, la largeur de l'échelon (11) sur le montant, de sorte que la pince (19) peut être engagée latéralement sur le montant (9), au niveau d'un échelon sélectionné (11) et être manoeuvrée en rotation jusqu'à ce que ses mâchoires (29) viennent en prise sur le montant (9), aux niveaux supérieur et inférieur relativement à l'échelon (11), tandis que cet échelon (11) est enserré audit faible jeu entre les mâchoires (29).Device for fixing the diagonal bars (3) of the ladders scaffolding, for a scaffolding (1) comprising at least two ladders (5) with uprights (9) and tubular and section rungs (11) round or close, the ladders (5) being connected to each other vertically by at least two diagonal bars (3) fixed in a cross and on each side of the scaffolding, the bars (3) being fixed by their ends at ladder steps (11), characterized in that it comprises a set of clamps (19) each articulated at a end of the diagonal bars (3), each clamp (19) comprising two upright grip jaws (29) arranged on either side of its axis of articulation to the bar, these jaws (29) being distant each other at least the width or diameter of the tubes amount (9) of scale and at most, with little play, the width of the rung (11) on the upright, so that the clamp (19) can be engaged laterally on the upright (9), at a level selected (11) and be maneuvered in rotation until its jaws (29) engage on the upright (9), at the levels upper and lower relative to the rung (11), while this rung (11) is enclosed by said slight clearance between the jaws (29). Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon la revendication 1, caractérisé en ce que lesdites mâchoires (29) sont disposées sur le corps (25) de la pince dans une configuration propre à assurer deux prises sur le montant (9) opposées, voire diamétralement opposées relativement à l'axe d'articulation de la pince.Fixing device for diagonal ladder bars scaffolding, according to claim 1, characterized in that said jaws (29) are arranged on the body (25) of the clamp in a configuration suitable for ensuring two sockets on the upright (9) opposite, even diametrically opposite relative to the axis of articulation of the pliers. Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon l'une des revendications 1, 2, caractérisé en ce que l'axe d'articulation de la pince (19) est pourvu d'un élément d'axe (35) en saillie vers l'intérieur, côté mâchoires, et apte à être reçu dans le trou externe (37) d'échelon des échelles de type à échelons sertis sur le montant.Fixing device for diagonal ladder bars scaffolding, according to one of claims 1, 2, characterized in that the hinge pin of the clamp (19) is provided with a pin element (35) projecting inwards, jaw side, and suitable for being received in the hole external (37) rung of the ladder type rung crimped on the amount. Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon la revendication 3, caractérisé en ce que ledit élément d'axe (35) est un rouleau en appui sur le corps (25) de la pince au moyen d'un boulon (21) d'articulation de la pince à la barre.Fixing device for diagonal ladder bars scaffolding according to claim 3, characterized in that said axis element (35) is a roller bearing on the body (25) of the clamp by means of a hinge bolt (21) from the clamp to the bar. Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon l'une des revendications 3, 4, caractérisé en ce que ledit élément d'axe (35) est revêtu d'une gaine intermédiaire favorisant l'engagement et l'assise de positionnement de l'élément d'axe (35) dans le trou d'échelon (37).Fixing device for diagonal ladder bars scaffolding, according to one of claims 3, 4, characterized in that said axis element (35) is coated with an intermediate sheath favoring the engagement and the positioning seat of the axis element (35) in the rung hole (37). Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon l'une des revendications précédentes, caractérisé en ce que la pince (19) est formée en une seule pièce comportant un élément de plaque (25) et deux mâchoires (29) à forme de U, formées à chaque bout de la plaque (25) et ouvertes l'une à l'opposé de l'autre, l'axe d'articulation pouvant être un élément d'axe (35) tourné en saillie vers l'intérieur, ou un simple trou de perçage (27), positionné au niveau médian de l'élément de plaque (25) et recevant un boulon (21) de fixation et d'articulation à la barre diagonale (3).Fixing device for diagonal ladder bars scaffolding, according to one of the preceding claims, characterized in that the clamp (19) is formed in a single piece comprising a plate element (25) and two U-shaped jaws (29) each end of the plate (25) and open one opposite the other, the articulation axis being able to be a projecting axis element (35) inward, or a single drill hole (27), positioned at center of the plate element (25) and receiving a bolt (21) of attachment and articulation to the diagonal bar (3). Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon la revendication 6, caractérisé en ce que la pince (19) est issue d'une tôle d'acier de 2 mm d'épaisseur, convenablement découpée et emboutie.Fixing device for diagonal ladder bars scaffolding, according to claim 6, characterized in that the clamp (19) comes from a steel sheet 2 mm thick, suitably cut and stamped. Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon l'une des revendications précédentes, caractérisé en ce que au moins l'une des mâchoires (29) et, de préférence les deux, comprend une partie de pince (31) tournée vers l'intérieur dans sa partie d'extrémité et à prise d'encliquetage (par flexion élastique de la partie de pince) sur le montant (9) d'échelle, de sorte que le verrouillage de prise sur le montant (9) d'échelle est automatique et aisé.Fixing device for diagonal ladder bars scaffolding, according to one of the preceding claims, characterized in that at least one of the jaws (29) and, preferably both, includes a clamp part (31) turned inwards in its end part and snap-in socket (by elastic bending of the clamp part) on the ladder post (9), so that the locking of taking on the amount (9) of scale is automatic and easy. Dispositif de fixation des barres diagonales d'échelles d'échafaudage, selon la revendication 8, caractérisé en ce qu'au moins l'une des mâchoires (29) comporte une partie d'extrémité faiblement recourbée (33) pour former un point de passage dur et de verrouillage de la prise sur le montant (9).Fixing device for diagonal ladder bars scaffolding according to claim 8, characterized in that at least one of the jaws (29) has a weakly end portion curved (33) to form a hard and locking pass point from the socket on the upright (9). Echafaudage, caractérisé en ce qu'il comporte un dispositif de fixation des barres diagonales d'échelles, tel que défini dans l'une quelconque des revendications précédentes.Scaffolding, characterized in that it includes a device for attachment of diagonal ladder bars, as defined in one any of the preceding claims.
EP00402736A 1999-10-18 2000-10-05 Fastening device of diagonal bars on scaffolding ladders and scaffolding obtained Expired - Lifetime EP1094175B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK00402736T DK1094175T3 (en) 1999-10-18 2000-10-05 Fastening device for inclined struts on scaffold ladders and thus provided scaffold

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9912953 1999-10-18
FR9912953A FR2799783B1 (en) 1999-10-18 1999-10-18 DEVICE FOR FIXING DIAGONAL BARS ON SCAFFOLDING LADDERS AND SCAFFOLDING OBTAINED

Publications (2)

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EP1094175A1 true EP1094175A1 (en) 2001-04-25
EP1094175B1 EP1094175B1 (en) 2005-03-30

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Family Applications (1)

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EP00402736A Expired - Lifetime EP1094175B1 (en) 1999-10-18 2000-10-05 Fastening device of diagonal bars on scaffolding ladders and scaffolding obtained

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EP (1) EP1094175B1 (en)
AT (1) ATE292226T1 (en)
DE (1) DE60019058T2 (en)
DK (1) DK1094175T3 (en)
ES (1) ES2235801T3 (en)
FR (1) FR2799783B1 (en)
PT (1) PT1094175E (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421538A (en) * 2004-12-23 2006-06-28 Safestand Ltd Brace for builders trestles
FR2880048A1 (en) * 2004-12-29 2006-06-30 Centaure Sa Scaffolding assembly for e.g. working on facade and elevated parts, has ladder fixing device including end part passing through cross hole of diagonal and housed in reservation of ladder so as to form support axle for diagonal
EP1808552A2 (en) * 2006-01-12 2007-07-18 Salemo & Merca, LDA Claw for crosspiece
WO2013054143A3 (en) * 2011-10-13 2013-06-13 Three G Metal Fabrications Limited Modular platform
FR2989102A1 (en) * 2012-04-05 2013-10-11 Marcel Roux Scaffolding for e.g. masonry work during construction of building, has riders, each partially straddling tube by plugging, and fixing unit fixing base plate on connector, so that riders partially surround tube
US8794381B2 (en) 2004-06-18 2014-08-05 Safestand Limited Fittings for builders' trestles
JP2015218479A (en) * 2014-05-16 2015-12-07 ホリー株式会社 Brace for temporary structure
EP3440282B1 (en) * 2016-04-08 2019-12-18 Peri Gmbh Fastening device
DE102019120359A1 (en) * 2019-07-29 2021-02-04 Bernhard Pangratz Connecting device
CN114704074A (en) * 2022-02-18 2022-07-05 杭州宏美建筑设备发展有限公司 Scaffold anti-skidding fixing part convenient to disassemble and assemble and fixing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926575B1 (en) 2008-01-22 2012-01-06 Tubesca METHOD OF ASSEMBLING AND DISASSEMBLING SAFELY OF A ROLLING SCAFFOLDING, SAFETY MOUNTING BRACKETS USED AND SCAFFOLD OBTAINED

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FR1587165A (en) * 1968-10-21 1970-03-13
GB2258998A (en) * 1991-08-24 1993-03-03 Universal Shelving Co Ltd Frame structure
EP0623716A1 (en) * 1993-05-04 1994-11-09 Ulma, S.Coop. Ltda. Improved multidirectional scaffolding

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FR1587165A (en) * 1968-10-21 1970-03-13
GB2258998A (en) * 1991-08-24 1993-03-03 Universal Shelving Co Ltd Frame structure
EP0623716A1 (en) * 1993-05-04 1994-11-09 Ulma, S.Coop. Ltda. Improved multidirectional scaffolding

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8794381B2 (en) 2004-06-18 2014-08-05 Safestand Limited Fittings for builders' trestles
GB2421538B (en) * 2004-12-23 2006-11-22 Safestand Ltd Brace for builders' trestles
GB2421538A (en) * 2004-12-23 2006-06-28 Safestand Ltd Brace for builders trestles
FR2880048A1 (en) * 2004-12-29 2006-06-30 Centaure Sa Scaffolding assembly for e.g. working on facade and elevated parts, has ladder fixing device including end part passing through cross hole of diagonal and housed in reservation of ladder so as to form support axle for diagonal
EP1686221A2 (en) * 2004-12-29 2006-08-02 Centaure Connecting device for parts of a scaffold
EP1686221A3 (en) * 2004-12-29 2008-08-27 Centaure Connecting device for parts of a scaffold
EP1808552A2 (en) * 2006-01-12 2007-07-18 Salemo & Merca, LDA Claw for crosspiece
EP1808552A3 (en) * 2006-01-12 2011-06-08 Salemo & Merca, LDA Claw for crosspiece
US10145129B2 (en) 2011-10-13 2018-12-04 Three G Metal Fabrications Limited Modular platform
WO2013054143A3 (en) * 2011-10-13 2013-06-13 Three G Metal Fabrications Limited Modular platform
FR2989102A1 (en) * 2012-04-05 2013-10-11 Marcel Roux Scaffolding for e.g. masonry work during construction of building, has riders, each partially straddling tube by plugging, and fixing unit fixing base plate on connector, so that riders partially surround tube
JP2015218479A (en) * 2014-05-16 2015-12-07 ホリー株式会社 Brace for temporary structure
EP3440282B1 (en) * 2016-04-08 2019-12-18 Peri Gmbh Fastening device
DE102019120359A1 (en) * 2019-07-29 2021-02-04 Bernhard Pangratz Connecting device
CN114704074A (en) * 2022-02-18 2022-07-05 杭州宏美建筑设备发展有限公司 Scaffold anti-skidding fixing part convenient to disassemble and assemble and fixing method
CN114704074B (en) * 2022-02-18 2023-10-03 杭州宏美建筑设备发展有限公司 Anti-skid fixing piece and fixing method for scaffold convenient to disassemble and assemble

Also Published As

Publication number Publication date
FR2799783A1 (en) 2001-04-20
DK1094175T3 (en) 2005-07-25
ATE292226T1 (en) 2005-04-15
EP1094175B1 (en) 2005-03-30
FR2799783B1 (en) 2002-01-04
ES2235801T3 (en) 2005-07-16
DE60019058D1 (en) 2005-05-04
DE60019058T2 (en) 2006-01-19
PT1094175E (en) 2005-06-30

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