EP0580456B1 - Scaffolding - Google Patents
Scaffolding Download PDFInfo
- Publication number
- EP0580456B1 EP0580456B1 EP93401170A EP93401170A EP0580456B1 EP 0580456 B1 EP0580456 B1 EP 0580456B1 EP 93401170 A EP93401170 A EP 93401170A EP 93401170 A EP93401170 A EP 93401170A EP 0580456 B1 EP0580456 B1 EP 0580456B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platform
- ladder
- rungs
- arrangement according
- ladders
- 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
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Classifications
-
- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
-
- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
- E04G1/30—Ladder scaffolds
Definitions
- the invention relates to a scaffolding according to the preamble part of claim 1 and in particular a scaffolding formed from two simple straight ladders capable of being used for other uses, for example in V-coupling or in line.
- the object of the invention is to provide a scaffolding which is very simple and convenient to use.
- DE-U-8 504 805 describes a scaffolding which uses upper and / or lower link arms which are connected to articulation points of the plate which are also different. Such scaffolding is rigid but complicates its handling.
- the arms are advantageously fixed to each of the scales by the external crimping opening of the steps.
- the rungs being of standardized shape and arranged at regular height intervals on the uprights, it is possible to position this link arm either above or below the platform, depending on its height on the scales, without having to move the articulation point of the arm on the platform. tray.
- this link arm as well as the position of its point of articulation on the plate will be determined so that it is inclined at an angle of about 45 ° conducive to good support of the plate relative to the scales.
- the tray may consist of two longitudinal crosspieces arranged close to the lateral edge of the tray, surmounted by a rectangular board or plate of width substantially that of the ladders and intended to carry the user, the crosspieces being each provided with hooks. its ends allowing the attachment of the tray on the ladder rungs and provided with lateral articulation points of the arms connecting to the ladder uprights.
- the attachment of the link arms to the scales can be carried out by means of plastic end caps shaped to enter from the outside into the crimping opening of the steps to the uprights. Locking the engagement of the end caps of the arms can be achieved by means of hooks passing behind the ladder upright so as to prevent the exit of the arm from the rung or simply by expanding the end cap himself.
- the scaffolding according to the invention consists of two straight straight ladders 1 and a plate 3 intended to support at a height level raised relative to the ground one or more user people.
- the plate is connected to the ladders by end hooks 5 and by triangulation arms 7, at 90 ° from these.
- the ladders are simple straight ladders with steps 9 set on the uprights 11 and consequently comprising an external opening corresponding to the tubular dimension of the step.
- One of the scales is slidably provided on the second and its external width is substantially equal to the internal width of the plane of the second.
- the plate 3 ( Figures 2 and 3) has a corresponding external dimension, namely rectangular, of width equal to the width of the widest ladder and of adequate length for a scaffolding plane (1 to 2m).
- the plate 13 comprises an upper plate 13 of the aforementioned dimensions and two tubular lower support crossmembers 15. These extend along the lateral edges of the plate, over its entire length, and are provided with hooks 5, mentioned above, which adapt to the rungs 9 at their ends.
- the two end hooks are spaced from the respective internal width of each ladder. They have a simple external retaining tab.
- the front and rear edges of the plate form a stop on the ladder uprights, in addition to the hooks themselves so that the plate is securely locked on the ladder rungs.
- the sleepers rest on the rungs, their median longitudinal axis corresponding to that of the ladder support steps.
- the axes of articulation 17 connecting arms articulated to the crosspieces and externally to the plate in vertical planes are located at the median axis of the latter and therefore at that of the support rungs.
- the other end of the arms is attached externally to the rungs, by their external crimping opening on the uprights ( Figure 4). It comprises a plastic end piece 19 fixed in its bent end part, of tubular shape in its front part corresponding to the external opening of the rung.
- the tip has on its rear part an annular groove 21 receiving the annular base 23 of a hook 25 in the shape of a U, suitably ballasted to return to the upright 11 and frame it in its natural position of gravity and prevent the end piece does not exit outside the rung.
- these arms can also be arranged under the plate by simple rotation on the crosspieces, as shown in phantom.
- a step 27 ( Figures 1 and 5) is fixed to the lower level of an upright of one of the ladders and allows easy access to the tray.
- This footstep triangular in shape, frames the upright laterally. It has a lower base 29 resting on the upright, being retained behind the upright in wedging by a pin 31 joining its rear wings 33. It is open at the front on the upper level and can be tilted upwards on the upright according to the arrow, in the retracted position.
- the assembly is quick and takes place as follows:
- the tray is hung on a rung of a ladder element by slightly pivoting the ladder relative to the floor to obtain wedging between the edge of the plate and the uprights of each rung.
- the two end pieces are then introduced into the corresponding rung either below or above the plate, in engagement in their external opening;
- the lock hook is positioned behind the ladder upright.
- the shape of the end hooks 5 ′ (FIG. 6) of the plate can be modified to practically wrap the rung in the service position (in height and in width), this making it possible to lock the front-rear movements and in height without the need to stop the board on the uprights.
- This allows in particular the use of any scale planes and greater freedom in sizing the plates or floor of the tray.
- the engagement of the steps hook is done in an inclined direction (about 45 °) according to the arrow and with straightening of the scale then at 90 ° from the plate.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
- Glass Compositions (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
L'invention concerne un échafaudage conforme à la partie préambule de la revendication 1 et en particulier un échafaudage constitué à partir de deux échelles simples droites susceptibles de servir à d'autres usages, par exemple en accouplement en V ou en ligne.The invention relates to a scaffolding according to the preamble part of claim 1 and in particular a scaffolding formed from two simple straight ladders capable of being used for other uses, for example in V-coupling or in line.
L'objet de l'invention est de proposer un échafaudage qui soit d'un maniement très simple et commode.The object of the invention is to provide a scaffolding which is very simple and convenient to use.
Il existe des échafaudages constitués d'un plateau et de deux échelles simples soutenant le plateau, le plateau étant relié perpendiculairement aux montants d'échelle par des bras en triangulation fixés sur chacun d'eux. Cependant, pour ces dispositifs, il est généralement nécessaire de déplacer latéralement le point de fixation du bras sur le plateau selon que l'autre extrémité du bras est fixée au-dessus ou au-dessous du plateau sur les montants d'échelles. Cette manipulation supplémentaire représente pour l'utilisateur un inconvénient.There are scaffolding made up of a plate and two simple ladders supporting the plate, the plate being connected perpendicular to the amounts of scale by arms in triangulation fixed on each one of them. However, for these devices, it is generally necessary to move the attachment point of the arm laterally on the platform, depending on whether the other end of the arm is attached above or below the platform on the ladder uprights. This additional manipulation represents a drawback for the user.
DE-U-8 504 805 décrit un échafaudage qui utilise des bras de liaison supérieurs et/ou inférieurs qui sont reliés à des points d'articulation du plateau également différents. Un tel échafaudage est rigide mais complique son maniement.DE-U-8 504 805 describes a scaffolding which uses upper and / or lower link arms which are connected to articulation points of the plate which are also different. Such scaffolding is rigid but complicates its handling.
Il est proposé selon l'invention un échafaudage conforme à la partie caractérisante de la revendication 1.According to the invention, there is proposed a scaffolding in accordance with the characterizing part of claim 1.
Les bras sont fixés avantageusement à chacune des échelles par l'ouverture de sertissage externe des échelons.The arms are advantageously fixed to each of the scales by the external crimping opening of the steps.
Grâce à cette disposition, les échelons étant de forme standardisée et disposés à intervalle de hauteur régulier sur les montants, il est possible de positionner ce bras de liaison indifféremment au dessus ou au dessous du plateau, en fonction de sa hauteur sur les échelles, sans avoir à déplacer le point d'articulation du bras sur le plateau. plateau.Thanks to this arrangement, the rungs being of standardized shape and arranged at regular height intervals on the uprights, it is possible to position this link arm either above or below the platform, depending on its height on the scales, without having to move the articulation point of the arm on the platform. tray.
La longueur de ce bras de liaison, de même que la position de son point d'articulation sur le plateau seront déterminés pour qu'il soit incliné d'un angle d'environ 45° propice à un bon maintien du plateau relativement aux échelles.The length of this link arm, as well as the position of its point of articulation on the plate will be determined so that it is inclined at an angle of about 45 ° conducive to good support of the plate relative to the scales.
Naturellement les deux crochets ou points d'appui du plateau à chacune de ses extrémités accouplées aux échelle, sont distants de la largeur des montants d'échelle, à un léger jeu près de manière à empêcher toute translation transversale du plateau. En outre, pour la rigidité de l'échafaudage, on utilise quatre bras de liaison identiques l'un à l'autre, disposés deux à deux latéralement et sur les parties latérales du plateau. De même, le plateau pourra être constitué de deux traverses longitudinales disposées proche du bord latéral du plateau, surmontées d'une planche ou plaque rectangulaire de largeur sensiblement celle des échelles et destinée à porter l'utilisateur, les traverses étant munies chacune de crochets à ses extrémités permettant l'accrochage du plateau sur les échelons d'échelles et pourvues des points d'articulation latéraux des bras de liaison aux montants d'échelle.Naturally the two hooks or support points of the tray at each of its ends coupled to the ladder, are distant from the width of the ladder uprights, with a slight play near so as to prevent any transverse translation of the tray. In addition, for the rigidity of the scaffolding, four connecting arms identical to each other are used, arranged two by two laterally and on the lateral parts of the plate. Likewise, the tray may consist of two longitudinal crosspieces arranged close to the lateral edge of the tray, surmounted by a rectangular board or plate of width substantially that of the ladders and intended to carry the user, the crosspieces being each provided with hooks. its ends allowing the attachment of the tray on the ladder rungs and provided with lateral articulation points of the arms connecting to the ladder uprights.
La fixation des bras de liaison aux échelles peut être réalisée au moyen d'embouts en matière plastique conformés pour entrer par l'extérieur dans l'ouverture de sertissage des échelons aux montants. Le verrouillage de l'engagement des embouts d'extrémité des bras peut être réalisé à l'aide de crochets passant derrière le montant d'échelle de façon à empêcher la sortie du bras de l'échelon ou simplement, par expansion de l'embout lui-même.The attachment of the link arms to the scales can be carried out by means of plastic end caps shaped to enter from the outside into the crimping opening of the steps to the uprights. Locking the engagement of the end caps of the arms can be achieved by means of hooks passing behind the ladder upright so as to prevent the exit of the arm from the rung or simply by expanding the end cap himself.
Un exemple de réalisation de l'invention et à présent décrit en référence aux dessins annexés sur lesquels :
- la figure 1 est une vue en élévation d'un échafaudage selon l'invention,
- la figure 2 est une vue de dessous du plateau de l'échafaudage,
- la figure 3 est une vue de côté du plateau,
- la figure 4 est une vue agrandie montrant les bras de liaison du plateau au montant,
- la figure 5 est une vue d'un accessoire de marche-pieds pour l'accès au plateau, et
- la figure 6 est une vue d'une variante de réalisation concernant la forme des crochets du plateau, à profil auto-verrouillable sur l'échelon.
- FIG. 1 is an elevation view of a scaffold according to the invention,
- FIG. 2 is a bottom view of the scaffolding platform,
- FIG. 3 is a side view of the plate,
- FIG. 4 is an enlarged view showing the arms connecting the plate to the upright,
- FIG. 5 is a view of an access step accessory for access to the platform, and
- Figure 6 is a view of an alternative embodiment concerning the shape of the hooks of the plate, with self-locking profile on the rung.
L'échafaudage selon l'invention, tel que représenté à la figure 1, est constitué de deux échelles simples droites 1 et d'un plateau 3 destiné à supporter à un niveau de hauteur rehaussé par rapport au sol une ou des personnes utilisatrices. Le plateau est relié aux échelles par des crochets d'extrémité 5 et par des bras de triangulation 7, à 90° de celles-ci. Les échelles sont des échelles simples droites à échelons 9 sertis sur les montants 11 et comportant par conséquent une ouverture externe correspondant à la dimension tubulaire de l'échelon. L'une des échelles est prévue coulissante sur la seconde et sa largeur externe est égale sensiblement à la largeur interne du plan de la seconde. Le plateau 3 (figures 2 et 3) a une dimension externe correspondante, à savoir rectangulaire, de largeur égale à la largeur de l'échelle la plus large et de longueur adéquate pour un plan d'échafaudage (1 à 2m). Il comporte une plaque supérieure 13 de dimensions précitées et deux traverses support inférieures tubulaires 15. Celles-ci s'étendent le long des bords latéraux de la plaque, sur toute sa longueur, et sont munies de crochets 5, précités, s'adaptant sur les échelons 9 à leur extrémité. Les deux crochets d'extrémité sont distants de la largeur interne respective de chaque échelle. Ils comportent une simple patte de retenue externe. Les bords avant et arrière de la plaque forment butée sur les montants d'échelle, complémentairement aux crochets eux-mêmes de manière à ce que le plateau soit bien verrouillé sur les échelons d'échelle. Les traverses reposent sur les échelons, leur axe longitudinal médian 
Un marche-pieds 27 (figures 1 et 5) est fixé au niveau inférieur d'un montant d'une des échelles et permet d'accéder aisément au plateau. Ce marche-pieds, de forme triangulaire, encadre le montant latéralement. Il comporte une base inférieure 29 s'appuyant sur le montant, étant retenu derrière le montant en coincement par un axe 31 joignant ses ailes arrière 33. Il est ouvert à l'avant au niveau supérieur et peut être basculé vers le haut sur le montant selon la flèche, en position escamotée.A step 27 (Figures 1 and 5) is fixed to the lower level of an upright of one of the ladders and allows easy access to the tray. This footstep, triangular in shape, frames the upright laterally. It has a
Le montage est rapide et se déroule de la façon suivante :The assembly is quick and takes place as follows:
On accroche le plateau sur un échelon d'un élément d'échelle en faisant légèrement pivoter l'échelle par rapport au plancher pour obtenir le coincement entre le bord de la plaque et le montants de chaque échelon.The tray is hung on a rung of a ladder element by slightly pivoting the ladder relative to the floor to obtain wedging between the edge of the plate and the uprights of each rung.
On introduit alors les deux pièces d'embout dans l'échelon correspondant soit au dessous, soit au dessus du plateau, en engagement dans leur ouverture externe ;The two end pieces are then introduced into the corresponding rung either below or above the plate, in engagement in their external opening;
Par simple gravité, le crochet de verrou se positionne derrière le montant de l'échelle.By simple gravity, the lock hook is positioned behind the ladder upright.
On procède de façon identique à l'autre extrémité du plateau. L'échafaudage est alors monté, parfaitement verrouillé, pour recevoir les utilisateurs.We proceed identically at the other end of the tray. The scaffolding is then assembled, perfectly locked, to receive the users.
On notera que la forme des crochets d'extrémité 5' (figure 6) du plateau peut être modifiée pour envelopper pratiquement l'échelon en position de service (en hauteur et en largeur), ceci permettant de verrouiller les mouvements avant-arrière et en hauteur sans nécessité de mettre en butée la planche sur les montants. Ceci permet notamment l'utilisation de plans d'échelle quelconques et une plus grande liberté de dimensionnement des plaques ou plancher du plateau. L'engagement du crochet des échelons se fait dans une direction inclinée (environ à 45°) selon la flèche et avec redressement de l'échelle ensuite à 90° du plateau.It will be noted that the shape of the
Claims (10)
- A scaffolding arrangement of the type formed by two simple straight ladders (1) with rungs (9) which are crimped on to their uprights (11) and a platform (3) which is fixed on the ladders by its ends and by connecting arms (7), in which the platform (3) comprises at least two hooks (5) or two spaced support points at its ends, by means of which it can be fixed to the rungs (9) of the vertically upright ladders, and in which at least one connecting arm (7) is fixed in triangulation relationship to the platform and to a ladder and is pivotably connected to the platform itself laterally characterised in that the pivot mounting axis (17) of the connecting arm (7) on the platform (3) and the central axes of the rungs (9) supporting the platform (3) are in the same plane.
- A scaffolding arrangement according to claim 1 characterised in that the arm or arms (7) are fixed to the ladders (1) by way of external openings for crinping of the rungs (9) on the uprights.
- A scaffolding arrangement according to one of claims 1 and 2 characterised in that the connecting arm or arms (7) comprise end portions (19) which are engaged in fixing relationship in the external openings of the rungs (9).
- A scaffolding arrangement according to one of the preceding claims characterised in that it comprises four identical connecting arms (7) which are disposed in twos laterally on the platform (3) and at 45° thereto.
- A scaffolding arrangement according to one of the preceding claims characterised in that the platform (3) is formed by two longitudinal transverse members (15) which are disposed close to the lateral edge of the platform and upon which is mounted a rectangular plank or plate member (13) of a width which is substantially that of the ladders and which is intended to carry the user, the transverse members each being provided with hooks (5) at their ends to permit hooking engagement of the platform on the rungs of the ladders and provided with lateral pivot mounting points (17) for connection of the connecting arms to the ladder uprights.
- A scaffolding arrangement according to claim 5 characterised in that the pivot mounting point (17) for the connecting arms on the transverse members is disposed in the plane comprising the central axes of the rungs supporting the platform.
- A scaffolding arrangement according to claim 3 characterised in that locking of the engagement of the end portions (19) of the arms is effected by means of hooks (25) passing behind the ladder upright so as to prevent the arm of the rung from coming out, or simply by expansion of the end portion itself.
- A scaffolding arrangement according to claim 7 characterised in that the hooks (25) are mounted rotatably on the end portion (19) and are shaped so as to return naturally under the force of gravity behind the ladder upright (11).
- A scaffolding arrangement according to one of the preceding claims characterised in that a retractable footrest (27), for gaining access to the platform, of triangular shape, having two limbs (33) which extend on respective sides of the upright (11), which is supported on the upright at a lower level and which is held in place at the rear by a jamming action by means of a shaft (31) connecting the limbs at a higher level, is fixed on one of the ladder uprights.
- A scaffolding arrangement according to one of the preceding claims characterised in that the platform comprises hooks (5') of a profile which is self-lockable on the rung, by practically enclosing it in the operative position in respect of height and width, with engagement occurring in an inclined direction (about 45°) and with the ladder then being moved upright again at 90° to the platform, so as to permit the use of ladder designs of any dimension and afford a greater degree of freedom in regard to dimensioning of the planks or plate members of the platform.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9209132A FR2694035B1 (en) | 1992-07-24 | 1992-07-24 | Type scaffolding consisting of two simple straight ladders and a tray. |
| FR9209132 | 1992-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0580456A1 EP0580456A1 (en) | 1994-01-26 |
| EP0580456B1 true EP0580456B1 (en) | 1996-02-14 |
Family
ID=9432214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93401170A Expired - Lifetime EP0580456B1 (en) | 1992-07-24 | 1993-05-06 | Scaffolding |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0580456B1 (en) |
| AT (1) | ATE134244T1 (en) |
| DE (1) | DE69301558T2 (en) |
| FR (1) | FR2694035B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2338260A (en) * | 1998-06-09 | 1999-12-15 | Sgb Services Plc | Scaffold comprising platform and ladders |
| DE10027965A1 (en) * | 2000-06-08 | 2001-12-13 | Hymer Leichtmetallbau | Spar rung connection for scaffold elements and. the like |
| ITVR20130003A1 (en) * | 2013-01-11 | 2014-07-12 | F A C A L S R L | SCAFFOLDING |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2619390A (en) * | 1950-05-31 | 1952-11-25 | Up Right Inc | Scaffolding and span therefor |
| US2933335A (en) * | 1954-08-23 | 1960-04-19 | Eugene D Farley | Demountable scaffold unit and clamps therefor |
| DE3504188A1 (en) * | 1985-02-07 | 1986-08-07 | Sebastian 8388 Mamming Ernst | Diagonal strut for scaffoldings |
| DE8504805U1 (en) * | 1985-02-21 | 1988-07-07 | Krause-Werk Gmbh & Co Kg, 6320 Alsfeld | Work platform |
-
1992
- 1992-07-24 FR FR9209132A patent/FR2694035B1/en not_active Expired - Fee Related
-
1993
- 1993-05-06 EP EP93401170A patent/EP0580456B1/en not_active Expired - Lifetime
- 1993-05-06 AT AT93401170T patent/ATE134244T1/en not_active IP Right Cessation
- 1993-05-06 DE DE69301558T patent/DE69301558T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2694035A1 (en) | 1994-01-28 |
| DE69301558D1 (en) | 1996-03-28 |
| DE69301558T2 (en) | 1996-10-02 |
| ATE134244T1 (en) | 1996-02-15 |
| EP0580456A1 (en) | 1994-01-26 |
| FR2694035B1 (en) | 1994-11-04 |
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