EP2011957B1 - Leiter mit permanenter Gipfelsplattform - Google Patents

Leiter mit permanenter Gipfelsplattform Download PDF

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Publication number
EP2011957B1
EP2011957B1 EP20080356100 EP08356100A EP2011957B1 EP 2011957 B1 EP2011957 B1 EP 2011957B1 EP 20080356100 EP20080356100 EP 20080356100 EP 08356100 A EP08356100 A EP 08356100A EP 2011957 B1 EP2011957 B1 EP 2011957B1
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EP
European Patent Office
Prior art keywords
platform
ladder
stringer
articulated
guard rail
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.)
Active
Application number
EP20080356100
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English (en)
French (fr)
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EP2011957A1 (de
Inventor
Yves Bugy
Marc Debilly
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.)
Audinnov
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Audinnov
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Publication date
Application filed by Audinnov filed Critical Audinnov
Publication of EP2011957A1 publication Critical patent/EP2011957A1/de
Application granted granted Critical
Publication of EP2011957B1 publication Critical patent/EP2011957B1/de
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/185—Devices providing a back support to a person on the ladder, e.g. cages

Definitions

  • the invention relates to ladders with permanent top platform, whether they are one or more planes, sliding or not.
  • the invention relates more particularly to ladders in which the platform, articulated on the last bar, is connected by connecting rods to the guard rail, articulated to the tops of the two uprights of the ladder, so that the movements of deployment or folding of the platform communicate movements similar to the bodyguard.
  • This is substantially vertical and tubular and has a cross section which is sometimes less than the transverse size of the user wearing the belt various tools and equipment necessary for the work he must perform.
  • the user must contort during the passage of his torso at the guard rail, ie perform movements which, what whatever the height, can generate destabilizing efforts and generating discomfort.
  • the user must reduce the clutter of objects attached to his belt and, even see, bring them from the ground by pulling the rope, after settling on the platform, thus increasing the time of setting in place of the site.
  • the object of the invention is to provide an arrangement for this disadvantage.
  • the user After deploying the platform and before engaging under the bodyguard to access this platform, the user confirms, if necessary, the position of the rods against the amounts of the scale, so as to enlarge transversely and vertically the access to the platform, to allow it to pass unhindered. After installation on the platform, the user pushes the rods to the rear end of the guard, until their upper ends are keyed to the guard rail. It is encouraged to perform this movement by the position of the rail of the guard rail, which with the rods, pivoted forward and then close to its articulation on the uprights, is raised relative to the normal position more horizontal.
  • the mobility of the upper ends of the connecting rods do not affect the safety and, on the contrary, improves it by facilitating the passage under the guard without the user having to contort on the ascent or descent.
  • each of the two lateral branches of the rail U-shaped guard is articulated on the amount of the ladder via a piece which carries it outside the interval between amounts giving to the interval between branches of this smooth a larger transverse dimension that that between amounts, while each rod, articulated in the lower part inside the platform, comprises an upper part flaring outward to its sliding joint on the side branch of the beam.
  • This arrangement increases the transverse dimension of the access area to the platform and further improves the passage of the user.
  • the wedging means of each connecting rod on the rail of the railing comprise, on the one hand, at least one notched corner, disposed under the branch of the U-shaped rail and close to the rail.
  • each arm of the limb comprises, in the vicinity of its articulation, another notched corner ensuring the temporary setting of the connecting rod in the erasing position, the thickness of this wedge, in its part ensuring the wedging , being greater than the functional clearance between the big end and the rail, to cause the upward straightening of the rail.
  • the ladder element constituting a scale on a plane or forming one of the planes of a ladder sliding at least two planes, is formed by two amounts bearing the reference numeral 2 and connected by bars 3
  • the amounts may be metallic or of composite material.
  • the ladder element At its upper end, the ladder element is equipped with a folding platform 4 connected by connecting rods 5 to a railing 6.
  • the platform 4 comprises a wall 4a which, intended to receive the feet of the user, is bordered on three of its sides by side walls 4b and 4c before. It is inserted between the uprights 2 and is articulated on a bar 3, for example by tabs 4d, bent in round. It can occupy a working position in which it protrudes forward, as shown in Figures 1 and 2 , or a folded position in which it is inserted between the uprights, as shown in FIG. figure 5 .
  • the guard comprises a tubular smooth 7 folded U and having two lateral branches 7a and a transverse core 7b.
  • the end of each branch 7a is connected to a hinge part 8 which, in the embodiment shown is L-shaped and comprises, on the one hand, a vertical flange 8a, coming against the inner face of the corresponding upright 2 and by which it is articulated on an axis 9, and, on the other hand, a wing 8b, connected to the rail and extending outwardly by deporting the branch of this rail.
  • the hinge parts 8 are also used for fixing a section of rail 7c, closing the U of the rail and protecting the user from any fall between the ladder and its support.
  • Each of the two connecting rods 5 is articulated at its lower part 5a on an axis projecting transversely to the inside of the platform 4 and from the rear and upper edge of its side wall 4b.
  • each collar 12 is connected to its connecting rod 5 by a transverse articulation 13 passing through, as shown in FIG. figure 3 , the wings of the rider and the cap 14 disposed at the end of the tubular connecting rod 5.
  • this plug is part of the means ensuring the locking of the connecting rod 5, in its locking position of the bodyguard 6, means which also include, under each arm branch and near its core 7b, a notched corner back 15.
  • the figure 3 shows that the wedge 15 to a thickness D which increases in going towards the soul of the smooth and towards the notch 15a of the plug 14.
  • each arm branch 7a also has, in the vicinity of its articulation part 8, another wedging means and, for example, another notched wedge 25 with notches 25a intended to provide the temporary wedging of the rod 5 in the erasing position.
  • another wedging means for example, another notched wedge 25 with notches 25a intended to provide the temporary wedging of the rod 5 in the erasing position.
  • the thickness S1 of this wedge, in its portion 25a providing the wedging is greater than the functional clearance S2 between the connecting rod head 14 and the arm, to cause the upward straightening of the arm.
  • the upper parts 5b of the rods 5 flare upwardly and in particular towards the hinge 13, in order to have a spacing close to that E1 favoring the passage of the user when he / she gains access to the platform.
  • This arrangement is added to the temporary lifting of the bodyguard to facilitate the passage.
  • the figure 6 shows an embodiment of the means used to maintain the front end of the platform when in use position.
  • These means comprise near each of the uprights 2, a telescopic tie rod 16 composed of a tubular upper element 16a articulated on the hinge axis 9 and a lower element 16b.
  • the latter is formed by a folded wire to form an upper loop 18 associated with a damping element and a lower attachment 19.
  • the loop 18 is slidably mounted in the tubular upper element 16a, with guiding and stopping on the damping element by fingers 17, while the fastener 19 surrounds an axis 20 disposed on the upper front edge of the corresponding side wall 4b of the platform 4 and projecting inside the platform.
  • the telescopic tie rods 16 In the folded position, the telescopic tie rods 16 occupy a very small footprint which facilitates the folding of the components of the ladder and contribute to reducing the size of it when it is brought into storage position.
  • the figure 4 shows that the axis of articulation of the connecting rod feet is arranged so that, when the platform is fully deployed in the working position with the rods 5 set on the rail, it is in front of a value S3 of the plane P containing the axes of articulation, respectively, 13 of the rods 5 on the guard and the platform 4 on its bar 3 by ensuring the self-locking of this platform.
  • the platform 4 is equipped with a means locking it in the deployed position and preventing its folding against the amounts without voluntary human intervention.
  • these means are constituted by an elastically deformable strip 22 cooperating with the field 2a of one of the uprights 2.
  • This strip is fixed against one of the side walls 4b of the platform 4 by rivets 23 and in such a way that at the end of deployment of the platform, its elastically deformable portion 22a, hitherto constrained in the gap S4 formed between the wall 4b and the inner face of the upright 2, escapes from this interval and elastically resumes its shape, just before its free end comes into abutment against the face 2a of the amount.
  • the two rods 5 are provided with a sub-smooth rear including two hooks 26 for a chain 27, which is unhooked at least on one side to allow access to the platform.
  • the upper elements 16a of the telescopic tie rods 16 are provided with a cross member 28, forming a smooth front.
  • the figure 5 shows that the arrangement according to the invention does not interfere with the folding of the elements against the amounts and, for some of them, between these amounts. It is in this configuration of the platform that the ladder is placed in a bearing position against a wall or a post and possibly stabilized by support legs and / or links clinging to fixed points.
  • the user verifies that the rods 5 are in the forward erasing position and access to the platform, as shown in FIG. figure 1 and, failing this, brings them into this position by sliding the jumpers 12 on the branches 7a of the rail 7.
  • the connecting rods 5 are close to the posts 2 and resting on the front blocks formed by the wedges 25, and in a configuration where their length causes the raising up of the rail 7 of the railing.
  • the guard much less gene the passage of the person accessing the platform through the smooth.
  • This platform arrangement can permanently equip the upper part of any ladder or part of scale, without the implementation on this ladder of additional support devices against a wall or a pole, as well as devices for anchoring and securing.
  • This embodiment differs from the previous by the locking means of the rods 5 on the branches 107a of the smooth 107 and the general shape of these branches.
  • each of the lateral branches 107a has the general shape of a V whose tip 30 is disposed at the hinge part 8 and above the hinge 9 of this piece on the corresponding upright 2.
  • the collar 32 When the collar 32, slidably mounted on the branch 107a, it is formed by folding a stainless steel wire, shaped to present two juxtaposed strands, both in its wings 32a that in its portion 32b surrounding the smooth.
  • the wings 32a have a resilient return capability, which can bring them back into position when they are no longer subjected to a clamping force, and secondly, the collar is supported on the smooth by two generatrices spaced, which transmit well the clamping force on this smooth and ensure the setting of the rod 5 corresponding.
  • the clamping means are constituted by a threaded knob 33 whose threaded rod 34 is screwed into a nut 35 and passes through the flanges 32a of the collar. It also crosses the head 5a of the connecting rod 5 by constituting axis of articulation of this connecting rod with respect to the collar.
  • the ladder After being pressed against a wall or a post and deployment of the platform 4, the ladder has the configuration shown in FIG. figure 11 . In this position, the collars 32 are not tight and can slide on the branches 107a of the rail of the guard but are in abutment against the gussets 8.
  • the guard rail Before entering the platform, the guard rail must be confirmed in the raised position of figure 11 , by pushing the upper part 5a of the rods 5, towards the front and according to the arrow 36, by pivoting about their hinges 10 with the platform.
  • the trajectory of the collars 32 describes a circular arc which, thanks to the V-shape given to the branches 107a, tangents these branches and thus generates on each of the branches 107a an upward force, represented by F at the figure 11 .
  • F the arm is straightened by pivoting around the articulation 9, to come into the temporary erase position mounted to the Figure 11 .
  • This embodiment adds human intervention in the process of wedging and shifting of the collars on the rail of the railing, but is not sensitive to mechanical failures of this wedging, as it may be the case by wear in a system automatic calibration.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Claims (11)

  1. Leiter mit permanenter oberer Plattform, die Folgendes enthält:
    - erstens eine Plattform (4), die an eine Leitersprosse (3) mit der Möglichkeit des Ausklappens nach vorne in Richtung der Auflagezone angelenkt ist,
    - zweitens ein oberes Geländer (6), das an das obere Ende von die Leitersprossen tragenden Leiterholmen (2) so angelenkt ist, dass sein Handlauf (7) nach hinten vorstehen kann, und
    - drittens Verbindungsstangen (5) zwischen Plattform (4) und Geländer (6), die auf dieses letztere die Bewegungen des Ausklappens oder Herunterklappens übertragen, die der ersten verliehen werden,
    dadurch gekennzeichnet, dass das obere Ende jeder der zwei Stangen (5) auf den entsprechenden Seitenschenkel (7a) des Handlaufs (7) des Geländers gleitend montiert ist, mit der Möglichkeit, zwei Stellungen einzunehmen:
    • eine Stellung des gesicherten Halts des Geländers, in der es am hinteren Ende des entsprechenden Seitenschenkels (7a) des Handlaufs verkeilt ist,
    • und einer vorübergehend eingezogenen Stellung, in der dieses Ende nach vorne in die Nähe des Gelenks (9) des Geländers (6) geschoben ist, indem die Stangen (5) nach vorne gedrückt werden und der Handlauf (7) des Geländers nach oben angehoben wird, um den Zugang zur Plattform (4) von unten freizugeben.
  2. Leiter mit Plattform nach Anspruch 1, dadurch gekennzeichnet, dass jeder der zwei Seitenschenkel (7a) des U-förmigen Handlaufs (7) an den Leiterholm (2) des Leiters mittels eines Gelenkstücks (8) angelenkt ist, das ihn nach außerhalb des Zwischenraums (E2) zwischen Leiterholmen (2) verlagert, indem dem Zwischenraum zwischen Schenkeln (7a) eine größere Querabmessung (E1) als diejenige (E2) zwischen den Leiterholmen verliehen wird, während jede Stange (5), die im unteren Bereich an eine Achse (10) angelenkt ist, die im Inneren der Plattform (4) vorsteht, einen senkrechten unteren Teil (5a) enthält, der von einem oberen Teil (5b) verlängert wird, der sich bis zu seiner gleitenden Verbindung (12, 13) mit dem Schenkel (7a) des Handlaufs nach außen ausweitet.
  3. Leiter mit Plattform nach Anspruch 1, dadurch gekennzeichnet, dass die Einrichtungen zur Verkeilung jeder Stange (5) in der Haltestellung des Geländers (6) einerseits mindestens einen gekerbten Keil (15), der unter dem Schenkel (7a) des Handlaufs und nahe seinem Mittelteil (7b) befestigt ist, und andererseits den Kopf (14) der entsprechenden Stange (5) enthalten, der eingerichtet ist, um sich in der Kerbe (15a) des gekerbten Keils verkeilen zu können.
  4. Leiter mit Plattform nach der Gesamtheit der Ansprüche 1 und 3, dadurch gekennzeichnet, dass das obere Ende jeder Stange (5) an die Schenkel einer U-förmigen Krampe (12) angelenkt sind, die auf den Seitenschenkel (7a) des Handlaufs (7) des Geländers (6) gleitend montiert ist.
  5. Leiter mit Plattform nach der Gesamtheit der Ansprüche 1 und 3, dadurch gekennzeichnet, dass jeder Schenkel (7a) des Handlaufs (7) in der Nähe des Gelenkstücks (8) einen weiteren gekerbten Keil (25) enthält, der die vorübergehende Verkeilung der Stange (5) in der eingezogenen Stellung gewährleistet, wobei die Dicke (S1) dieses Keils (25) in seinem die Verkeilung gewährleistenden Teil (25a) größer als das Betriebsspiel (S2) zwischen dem Kopf (14) der Stange und dem Handlauf (7) ist, um das Aufrichten des Handlaufs nach oben zu bewirken.
  6. Leiter mit Plattform nach Anspruch 1, dadurch gekennzeichnet, dass die Einrichtungen zur Verriegelung der Plattform (4) in der ausgeklappten Arbeitsstellung aus einer Metalllamelle (22) bestehen, deren Körper an einer der Seitenwände (4b) der Plattform (4) befestigt ist, und deren aktiver Teil (22a) elastisch verformbar und nahe dem entsprechenden Leiterholm (2) des Leiters angeordnet ist, um gegen die Seite (2a) dieses Leiterholms, wenn die Plattform (4) in der ausgeklappten Stellung ist, und in den Raum (J) zwischen diesem Leiterholm (2) und der Seitenwand (4b) der Plattform in Anlage kommen zu können, wenn letztere heruntergeklappt ist.
  7. Leiter mit Plattform nach Anspruch 1, dadurch gekennzeichnet, dass die Gelenkachse (10) des unteren Endes jeder der Stangen (5) auf der Seitenwand (4b) der Plattform (4) so angeordnet ist, dass sie sich, wenn diese Plattform in der Arbeitsstellung mit den Stangen auf dem Handlauf verkeilt vollständig ausgeklappt ist, vor der Ebene P befindet, die die Anlenkachsen (13) der Stangen am Geländer (6) bzw. (3) der Plattform (4) an ihrer Leitersprosse enthält, wodurch die Selbsthemmung dieser Plattform (4) gewährleistet wird.
  8. Leiter mit Plattform nach Anspruch 1, dadurch gekennzeichnet, dass das vordere Ende der Plattform (4) in der ausgeklappten Arbeitsstellung von zwei Teleskopstangen (16) unterstützt wird, die jeweils aus Folgendem bestehen:
    - einem oberen rohrförmigen Element (16a), das an die Anlenkachse (9) des Geländers (6) an einen Leiterholm (2) angelenkt ist,
    - und einem unteren Element (16b), das im ersten gleitend mit einer Begrenzung seines Ausdehnungshubs durch einen Anschlag (17) montiert ist, wobei das untere Ende dieses Elements an eine Achse (20) angelenkt ist, die am oberen vorderen Rand der entsprechenden Seitenwand (4b) der Plattform (4) und ins Innere dieser Plattform vorstehend angeordnet ist.
  9. Leiter mit Plattform nach der Gesamtheit der Ansprüche 1 und 8, dadurch gekennzeichnet, dass das untere Element (16b) jeder Teleskopstange aus einem Metalldraht besteht, der umgebogen ist, um Folgendes zu formen:
    - eine obere Schlaufe (18), durch die es im oberen rohrförmigen Element (16a) gleitend montiert ist, mit Führung und Stopp auf einem Dämpfungselement durch Durchgangsfinger (17),
    - und eine untere Befestigung (19), mit die es an der Achse (20) angelenkt wird.
  10. Leiter mit Plattform nach der Gesamtheit der Ansprüche 1 und 2, dadurch gekennzeichnet, dass das obere Ende jeder Stange (5) an die Schenkel einer U-förmigen Schelle (32) angelenkt ist, die auf dem Seitenschenkel (107a) des Handlaufs (107) gleitend montiert ist, wobei die Schelle elastisch in Richtung der Öffnung ihrer Schenkel zurückgestellt wird, während ihr Festklemmen, das die Verkeilung der Stange (5) auf dem Schenkel (107a) gewährleistet, vom manuellen Einschrauben eines Gewindebolzens (33) abhängt, dessen Schaft (34) auch die Gelenkachse der Stange (5) auf der Schelle (32) bildet.
  11. Leiter mit Plattform nach Anspruch 10, dadurch gekennzeichnet, dass jeder der Seitenschenkel (107a) des Handlaufs (107) eine allgemeine V-Form aufweist, deren Spitze (30) sich im Wesentlichen oberhalb seiner Anlenkung (9) am Leiterholm (2) befindet.
EP20080356100 2007-07-05 2008-07-04 Leiter mit permanenter Gipfelsplattform Active EP2011957B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0704835A FR2918408B1 (fr) 2007-07-05 2007-07-05 Echelle avec plateforme sommitale permanente

Publications (2)

Publication Number Publication Date
EP2011957A1 EP2011957A1 (de) 2009-01-07
EP2011957B1 true EP2011957B1 (de) 2013-06-05

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EP20080356100 Active EP2011957B1 (de) 2007-07-05 2008-07-04 Leiter mit permanenter Gipfelsplattform

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EP (1) EP2011957B1 (de)
FR (1) FR2918408B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3027942B1 (fr) 2014-10-31 2016-11-18 Audinnov Equipement d'ascension avec plateforme et garde corps repliables
US11466462B2 (en) * 2018-09-12 2022-10-11 The Boeing Company Rotating mount folding guardrail
FR3112570B1 (fr) 2020-07-15 2022-09-09 Cdh Group Dispositif de travail en hauteur a garde-corps articule et portillon automatique
FR3113695B1 (fr) 2020-08-27 2022-10-07 Cdh Group Dispositif de travail en hauteur a garde-corps articule et moyen de maintien en position repliee
FR3141962A1 (fr) 2022-11-15 2024-05-17 Cdh Group Echelle à poste de travail repliable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1363224A (en) * 1971-07-14 1974-08-14 Fitter D G Ladder attachment
FR2892146B1 (fr) * 2005-10-14 2007-12-14 Audinnov Soc Par Actions Simpl Dispositif du type escabeau / echelle de securite constitue de deux elements et de moyens assurant la stabilite, et possedant un poste de travail integre

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Publication number Publication date
EP2011957A1 (de) 2009-01-07
FR2918408A1 (fr) 2009-01-09
FR2918408B1 (fr) 2009-09-11

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