EP1094175B1 - 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
EP1094175B1
EP1094175B1 EP00402736A EP00402736A EP1094175B1 EP 1094175 B1 EP1094175 B1 EP 1094175B1 EP 00402736 A EP00402736 A EP 00402736A EP 00402736 A EP00402736 A EP 00402736A EP 1094175 B1 EP1094175 B1 EP 1094175B1
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EP
European Patent Office
Prior art keywords
scaffolding
ladders
clamp
upright
diagonal bars
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 - Lifetime
Application number
EP00402736A
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German (de)
French (fr)
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EP1094175A1 (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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    • 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 scaffold ladders and the scaffolding obtained.
  • the invention aims to remedy this drawback and proposes a device for fixing the diagonal bars of the scaffolding ladders, for a scaffolding having at least two ladders and tubular ladders and of round or near section, the scales being connected to each other vertically by at least two bars diagonals fixed in cross and on each side of the scaffolding, the bars being fixed at their ends to ladder steps, characterized in that what it includes a set of pliers intended to be articulated each to a end of the diagonal bars, each clamp comprising two jaws for taking the amount disposed on either side of its axis articulated at the bar, these jaws being distant from each other at least the width or diameter of the ladder upright tubes and at most, with little clearance, the width of the rung on the upright, so that the clamp can be engaged laterally on the upright, level of a selected step and be operated in rotation until what his jaws come to grip on the amount, at the levels superior and inferior relative to the step, while that step is constrained to said weak clearance between the jaws.
  • Said jaws are advantageously arranged on the body the gripper in a configuration to ensure two holds on the opposite or even diametrically opposed amounts relative to the axis articulation of the forceps.
  • the lateral grip of the clamp being substantially that of the amount, or even slightly higher (the thickness of the branch of jaw), it does not interfere with the implantation of the upper plateau on the diagonal bar fixation step, contrary to the corresponding conventional devices.
  • the hinge pin of the clamp can be provided with a pin element protruding inwards (jaw side) and able to be received in the hole External ladder-type ladder ladder crimped on the upright.
  • This axis element can be coated with an intermediate sheath promoting engagement and positioning of the axis member in the stephole.
  • the clip is advantageously formed in one piece having a plate member and two U-shaped jaws, formed at each end of the plate, the hinge axis being constituted by a simple drilling hole or an axis element turned into inward projection, as mentioned above, positioned at the median level of the plate member and receiving a bolt fixing and hinge to the diagonal bar.
  • At least one of the jaws and preferably both can (wind) include a part of forceps turned inwards in its part end and snap-fit (by elastic bending of the part of clip) on the ladder amount, so that the catch lock on the amount of scale is automatic and easy.
  • Said clamp may be derived from a steel sheet 2 mm thick, suitably cut and stamped, the end return of said part of the pincer being slightly curved to form a point of Hard passage and catch lock on the amount.
  • the invention also relates to a scaffolding equipped with a device for fixing diagonal ladder bars according to the invention.
  • Scaffolding 1 equipped with a bar fixing device diagonal 3 scales according to the invention is shown partially in Figure 1.
  • This scaffolding basically comprises two ladders vertical 5, a support plate 7 people, two smooth horizontal spacers laterally attached to them (no represented), two diagonal bars 3 mounted in a cross, one of each side, attached to ladder uprights at selected levels 11 and lateral stabilizer bars 13 resting on the ground.
  • the ladders 5 are of type with amounts and steps of section tubular round, the rungs 11 being crimped on the uprights 9 (by an enlarged inner end base 15 and a crimping rim external 17).
  • the device of the invention relates to the diagonal bars which provide rigid vertical holding ladders 5 of the scaffolding. he has unit-mounted clamps at each end of the bars diagonals 3 and allowing the attachment of fixing to the amounts 9 scale.
  • tongs 19 all identical are mounted articulated by means a bolt 21 engaged on an end plate 23 of the bars diagonals.
  • They comprise a rectangular flat body 25 pierced with a hole of axis 27 in the middle, and two jaws 29 integral with the body 25 arranged on either side of the axis hole 27 and equidistant from this latest.
  • the set comes from a 2 mm thick steel plate properly 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 to 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 9 upright tube section of the ladders (all identical) and the distance from the leg 33 to the plane of the body 25 determining the opening of jaws is slightly smaller than the diameter of the upright tube scale. This conformation allows commitment on the amount with slight elastic flexion of the jaw branch 31 to the passage of this paw on the amount. This commitment is described later.
  • the articulated mounting of the clamp 19 on the diagonal bar 3 is provided by means of a roller member 35 forming a pin element protruding from the jaw side. This element is pressed against the plane of the 25 by the nut of the hinge bolt 21.
  • the roller 35 is preferably coated with a sheath of diameter equal to that of the hole of the tube of step 11, which is as indicated crimped by its end to amount 9 scale, being slightly flattened on the inside by its base 15 resting on the upright and tightened by an outer rim 17 crimped on outside. The sheath promotes the introduction and the adjusted maintenance of the axle member 35 projecting into the step hole 37.
  • the branches 31 of the jaws extend parallel to each other, at a distance greater than or equal to tube diameter of the uprights 9 scale and equal to low play near to the inner enlargement of the support base 15 of the step end crimped on the amount.
  • the echelon tube 11 is indeed enlarged to allow the support against the tube of amount 9 tightened by crimping external. All rungs are deformed and widened at their base so identical against the amount.
  • the openings of the jaws are opposite to each other.
  • the assembly of the diagonal bars 3 is very simple. It is enough to engage each end clip 19 of a bar on a post scale, at the level of a chosen step 11, by introducing the element axis 35 in the corresponding step hole 37, the clamp being turned substantially perpendicular to the amount to allow lateral engagement.
  • the jaw branches 31 thus pass from each side of the upright tube and the axle member 35 is depressed into the step hole 37.
  • the inner plane of the body 25 of the pliers abut against the surface of the post tube. It is then to turn the clamp according to arrows (Figure 2) to engage simultaneously the jaws 29 engaged on the upright tube.
  • the clip is in end of assembly with its body substantially parallel to the amount. At this moment, the jaw limbs 31 come to grip with low clearance the enlarged base 15 of the rung and the jaws are in locked hold (snap) to the amount.
  • the catch is therefore operated on the rung and the amount.
  • the lateral size of intake is minimal, corresponding to the thickness of the branch (2 mm) and does not interfere with positioning later of the support plate 7 on this level.
  • Locking the plug is obtained by snapping with light flexion of the jaw limbs 31 at the passage of rotation of the legs curved 33 on the upright tube.
  • the editing is therefore automatic and fast, being performed on both end clamps one bar on one side of the scaffold.
  • the assembly of the other diagonal bar on the other side of the scaffold (not shown) is done the same way.
  • the disassembly of the bars is obtained by a reverse maneuver pliers.
  • the invention thus provides a simple, economical and easy to use for fixing diagonal bars to ladders scaffolding.
  • the section of the ladder amounts, is not necessarily circular. It can be rounded, in ellipsis for example. It is enough in this case to adapt the shape of the branches of the jaws to that of the tube of while retaining a curved end tab for latching locking jaws on the upright.
  • the jaws are not necessarily identical and one on both can secure the lock to the amount, which can be also provided by means other than snapping.
  • the projecting axle element can be eliminated and the device may be applied to step ladders not necessarily crimped on the amounts.

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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 scaffold 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. Un tel système est connu de FR-1587165.Currently, the cross-link diagonal bars of scaffolding ladders are fixed for the most part by means of hooks with movable jaw engaged on the ladder rungs. These systems even though they are self-locking, go beyond step echelons towards the top and prevent the positioning of the scaffolding platform on these steps. Such a system is known from FR-1587165.

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 destinées à être 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 device for fixing the diagonal bars of the scaffolding ladders, for a scaffolding having at least two ladders and tubular ladders and of round or near section, the scales being connected to each other vertically by at least two bars diagonals fixed in cross and on each side of the scaffolding, the bars being fixed at their ends to ladder steps, characterized in that what it includes a set of pliers intended to be articulated each to a end of the diagonal bars, each clamp comprising two jaws for taking the amount disposed on either side of its axis articulated at the bar, these jaws being distant from each other at least the width or diameter of the ladder upright tubes and at most, with little clearance, the width of the rung on the upright, so that the clamp can be engaged laterally on the upright, level of a selected step and be operated in rotation until what his jaws come to grip on the amount, at the levels superior and inferior relative to the step, while that step is constrained to said weak 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 the gripper in a configuration to ensure two holds on the opposite or even diametrically opposed amounts relative to the axis articulation of the forceps.

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 provision that the diagonal bars equipped with tongs according to the invention are automatically fixed by simple lateral engagement of the clamp on the post and a rotation subsequent to it, substantially a quarter of a turn, and therefore without accessories likely to be scattered and lost. We thus obtain a good bonding of the bar to the amount and to the scale step. with rigid fixing points of the cross connection of the ladders for their vertical positioning in view of the sustenance 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, or even slightly higher (the thickness of the branch of jaw), it does not interfere with the implantation of the upper plateau on the diagonal bar fixation step, contrary to the 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 come into engagement on the amount on either side of a level of width greater than or equal to that of the uprights, at least for its base of support on the amount.

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 protruding inwards (jaw side) and able to be received in the hole External ladder-type ladder ladder 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 promoting engagement and positioning of the axis member in the stephole.

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 clip is advantageously formed in one piece having a plate member and two U-shaped jaws, formed at each end of the plate, the hinge axis being constituted by a simple drilling hole or an axis element turned into inward projection, as mentioned above, positioned at the median level of the plate member and receiving a bolt fixing and hinge 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 forceps turned inwards in its part end and snap-fit (by elastic bending of the part of clip) on the ladder amount, so that the catch 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 derived from a steel sheet 2 mm thick, suitably cut and stamped, the end return of said part of the pincer being slightly curved to form a point of Hard passage and catch lock on the amount.

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 equipped with a device for fixing diagonal ladder bars 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 with the aid of an exemplary embodiment, described by way of nonlimiting example and with reference to the appended drawings, in which:
  • FIG. 1 is a partial view in side perspective of a scaffolding equipped with a device according to the invention,
  • FIG. 2 is an enlarged perspective view of the articulated clip of the device for fixing diagonal ladder bars according to the invention, and
  • Figure 3 is a sectional view from above 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.Scaffolding 1 equipped with a bar fixing device diagonal 3 scales according to the invention is shown partially in Figure 1. This scaffolding basically comprises two ladders vertical 5, a support plate 7 people, two smooth horizontal spacers laterally attached to them (no represented), two diagonal bars 3 mounted in a cross, one of each side, attached to ladder uprights at selected levels 11 and lateral stabilizer bars 13 resting on the ground.

Une seule barre diagonale 3 est représentée.Only one 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).The ladders 5 are of type with amounts and steps of section tubular round, the rungs 11 being crimped on the uprights 9 (by an enlarged inner 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 holding ladders 5 of the scaffolding. he has unit-mounted clamps at each end of the bars diagonals 3 and allowing the attachment of fixing to the amounts 9 scale.

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 tongs 19 all identical 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 comprise a rectangular flat body 25 pierced with a hole of axis 27 in the middle, and two jaws 29 integral with the body 25 arranged on either side of the axis hole 27 and equidistant from this latest. The set comes from a 2 mm thick steel plate properly 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 to 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 9 upright tube section of the ladders (all identical) and the distance from the leg 33 to the plane of the body 25 determining the opening of jaws is slightly smaller than the diameter of the upright tube scale. This conformation allows commitment on the amount with slight elastic flexion of the jaw branch 31 to the passage of this paw on the amount. 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 provided by means of a roller member 35 forming a pin element protruding from the jaw side. This element is pressed against the plane of the 25 by the nut of the hinge bolt 21. The roller 35 is preferably coated with a sheath of diameter equal to that of the hole of the tube of step 11, which is as indicated crimped by its end to amount 9 scale, being slightly flattened on the inside by its base 15 resting on the upright and tightened by an outer rim 17 crimped on outside. The sheath promotes the introduction and the adjusted maintenance of the axle member 35 projecting into the step 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 tube diameter of the uprights 9 scale and equal to low play near to the inner enlargement of the support base 15 of the step end crimped on the amount. The echelon tube 11 is indeed enlarged to allow the support against the tube of amount 9 tightened by crimping external. All rungs are deformed and widened at their base so identical against the amount. The openings of the jaws are opposite to 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 to engage each end clip 19 of a bar on a post scale, at the level of a chosen step 11, by introducing the element axis 35 in the corresponding step hole 37, the clamp being turned substantially perpendicular to the amount to allow lateral engagement. The jaw branches 31 thus pass from each side of the upright tube and the axle member 35 is depressed into the step hole 37. At the bottom of the race, the inner plane of the body 25 of the pliers abut against the surface of the post tube. It is then to turn the clamp according to arrows (Figure 2) to engage simultaneously the jaws 29 engaged on the upright tube. The clip is in end of assembly with its body substantially parallel to the amount. At this moment, the jaw limbs 31 come to grip with low clearance the enlarged base 15 of the rung and the jaws are in locked hold (snap) to the amount.

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 size of intake is minimal, corresponding to the thickness of the branch (2 mm) and does not interfere with positioning later of the support plate 7 on this level.

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.Locking the plug is obtained by snapping with light flexion of the jaw limbs 31 at the passage of rotation of the legs curved 33 on the upright tube. The editing is therefore automatic and fast, being performed on both end clamps one bar on one side of the scaffold. The assembly of the other diagonal bar on the other side of the scaffold (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 maneuver 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 easily be performed by those skilled in the art within the scope 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.So, the section of the ladder amounts, is not necessarily circular. It can be rounded, in ellipsis for example. It is enough in this case to adapt the shape of the branches of the jaws to that of the tube of while retaining a curved end tab for latching locking jaws 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 one on both can secure the lock to the amount, which can be also provided by means other than snapping.

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 axle element can be eliminated and the device may be applied to step ladders not necessarily crimped on the amounts.

Claims (10)

  1. A fixing device for the diagonal bars (3) of scaffolding ladders, for scaffolding (1) comprising at least two ladders (5) with tubular uprights (9) and rungs (11) of round or similar section, the ladders (5) being connected together vertically by at least two diagonal bars (3) fixed crosswise and on each side of the scaffolding, the bars (3) being fixed by their ends to ladder rungs (11), characterised in that it comprises an assembly of clamps (19) each designed to be articulated to one end of the diagonal bars (3), each clamp (19) comprising two jaws (29) for gripping the upright (9), disposed either side of the axis of articulation thereof on the bar, these jaws (29) being spaced from one another by at least the width or diameter of the ladder upright tubes (9) and by at most, apart from a small amount of play, the width of the rung (11) on the upright, in such a way that the clamp (19) may be engaged laterally on the upright (9), at the level of a selected rung (11), and be manoeuvred rotationally until its jaws (29) grip the upright (9), above and below the rung (11), while this rung (11) is held with said slight play between the jaws (29).
  2. A fixing device for the diagonal bars of scaffolding ladders, according to claim 1, characterised in that said jaws (29) are disposed on the body (25) of the clamp in a configuration suitable for gripping the upright (9) in two opposing directions, even diametrically opposite relative to the axis of articulation of the clamp.
  3. A fixing device for the diagonal bars of scaffolding ladders, according to either one of claims 1, 2 characterised in that the axis of articulation of the clamp (19) is provided with an axial element (35) projecting inwards on the jaw side and capable of being received in the external hole (37) in the rung in ladders of the type with rungs crimped on the upright.
  4. A fixing device for the diagonal bars of scaffolding ladders, according to claim 3, characterised in that said axial element (35) is a roll bearing on the body (25) of the clamp by means of a bolt (21) articulating the clamp to the bar.
  5. A fixing device for the diagonal bars of scaffolding ladders, according to either one of claims 3, 4, characterised in that said axial element (35) is covered with an intermediate sheath promoting engagement and positioning seating of the axial element (35) in the rung hole (37).
  6. A fixing device for the diagonal bars of scaffolding ladders, according to any one of the preceding claims, characterised in that the clamp (19) is formed of a single piece comprising a plate element (25) and two U-shaped jaws, formed at each end of the plate (25) and open in opposite directions from one another, the axis of articulation possibly comprising an axial element (35) projecting towards the inside, or a simple drill-hole (27), positioned medially in the plate element (25) and receiving a bolt (21) for fixing and articulation to the diagonal bar (3).
  7. A fixing device for the diagonal bars of scaffolding ladders, according to claim 6, characterised in that the clamp (19) is made from a steel sheet 2mm thick, suitably cut and stamped.
  8. A fixing device for the diagonal bars of scaffolding ladders, according to any one of the preceding claims, characterised in that at least one of the jaws (29), and preferably both, comprises a clamp part (31) turned inwards at its end part and capable of snap-fitting (by resilient flexion of the clamp part) on the upright (9) of the ladder, in such a way that locking on the ladder upright (9) is automatic and easy.
  9. A fixing device for the diagonal bars of scaffolding ladders, according to claim 8, characterised in that at least one of the jaws (29) comprises a slightly curved end part (33) for forming a stiff zone for passage over and locking on the upright (9).
  10. Scaffolding, characterised in that it comprises a fixing device for the diagonal bars of ladders, as defined in any one 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)

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

Family

ID=9551036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00402736A Expired - Lifetime EP1094175B1 (en) 1999-10-18 2000-10-05 Fastening device of diagonal bars on scaffolding ladders and scaffolding obtained

Country Status (7)

Country Link
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)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL1700973T3 (en) 2004-06-18 2009-08-31 Safestand Ltd Ladder support bracket
GB2421538B (en) * 2004-12-23 2006-11-22 Safestand Ltd Brace for builders' trestles
FR2880048B1 (en) * 2004-12-29 2015-11-27 Centaure MOUNTING DEVICE FOR SCAFFOLDING PARTS
PT103418B (en) * 2006-01-12 2007-11-05 Salemo & Merca Lda CLAY FOR LOCK
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
GB201117717D0 (en) 2011-10-13 2011-11-23 Three G Metal Fabrications Ltd Modular platform
FR2989102B1 (en) * 2012-04-05 2015-08-14 Marcel Roux SCAFFOLDING
JP6263440B2 (en) * 2014-05-16 2018-01-17 ホリー株式会社 Brace for temporary structure
DE102016205882A1 (en) * 2016-04-08 2017-10-12 Peri Gmbh fastening device
DE102019120359A1 (en) * 2019-07-29 2021-02-04 Bernhard Pangratz Connecting device
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1587165A (en) * 1968-10-21 1970-03-13
GB9118298D0 (en) * 1991-08-24 1991-10-09 Universal Shelving Co Ltd Storage unit
ES2068136B1 (en) * 1993-05-04 1998-01-16 Ulma S Coop PERFECTED MULTIDIRECTIONAL SCAFFOLD.

Also Published As

Publication number Publication date
FR2799783B1 (en) 2002-01-04
ES2235801T3 (en) 2005-07-16
DE60019058T2 (en) 2006-01-19
EP1094175A1 (en) 2001-04-25
DK1094175T3 (en) 2005-07-25
FR2799783A1 (en) 2001-04-20
DE60019058D1 (en) 2005-05-04
ATE292226T1 (en) 2005-04-15
PT1094175E (en) 2005-06-30

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