EP2034128A1 - Steps with working platform - Google Patents
Steps with working platform Download PDFInfo
- Publication number
- EP2034128A1 EP2034128A1 EP08290790A EP08290790A EP2034128A1 EP 2034128 A1 EP2034128 A1 EP 2034128A1 EP 08290790 A EP08290790 A EP 08290790A EP 08290790 A EP08290790 A EP 08290790A EP 2034128 A1 EP2034128 A1 EP 2034128A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rail
- plane
- lower rail
- movable
- rise
- 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.)
- Withdrawn
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Classifications
-
- 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
-
- 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
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
-
- 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
Definitions
- the invention relates to a step and, in particular, a step whose work platform is self-closing.
- Steps are known with a work platform closing the platform by a gate or a chain. Nevertheless, operators sometimes forget to close and lock the gate or the closing chain of the platform so that they are not arranged safely on their platform, and can accidentally tilt out of it.
- the invention aims to overcome this disadvantage and proposes a step comprising a climbing plane, a crutch plane and a working platform, which is provided with a support plate of an operator, a closed upper smooth and d a lower rail open planar side side, characterized in that it comprises a movable boom articulated to the upper rail or to the plane of rise substantially at the same height as the upper rail or under it, this rail being suitable to rest on the lower rail and to close the working platform at the lower rail, on the ascent plane.
- the step can be foldable and the working platform is adapted to be developed in the service position when opening the step and to be folded substantially in the plan to off position.
- the upper rail is connected to the lower rail by means of at least one first lateral link articulated thereto
- the lower rail is connected to the platform by means of at least one second lateral link articulated thereto and substantially parallel to the first link
- the upper rail further comprises a movable boom hinged thereto and disposed in the plane of the step of the step, this movable rail being able to close the opening of platform towards the plane of rise, at the level of the lower rail, resting by its weight on the lower rail, said movable boom being further adapted to be raised to allow the passage of an operator uphill to the platform or downhill of it.
- the mobile boom articulated to the plane of rise or to the top rail constitutes a system of automatic closure of the work platform for the operator, once he is on this platform and he no longer has to worry about the closure of the platform since it is ensured automatically by fallout of the mobile boom on the lower rail.
- the movable boom may be tubular and has a U-shape whose parallel branches are hinged at their end laterally to the upper rail or the plane of rise.
- the mobile arm is adapted to be automatically hooked in the lower position, by its own weight, on the lower rail, by means of at least one hook with articulated spout retracting the hooking passage of the tube of the smooth mobile and closing reminder on the tube of the mobile boom after passage thereof at the bottom of the hook.
- a step 1 comprises a rise plane 3, a skewer plane 5 articulated to the rise plane 3 and a working platform 7 formed at its upper part.
- the work platform 7 is intended to safely support a person or an operator 9.
- This platform 7 comprises a lower plate 11 support of the operator 9 articulated on the plane of rise 3 and bearing on the plane of stand 5, a closed top rail 13 forming a railing of the operator and arranged at about one meter above the support plate 11 of the operator, and a lower rail 15 open planar side side and also forming element guardrail of the operator in the low position and disposed about half a meter of said support plate 11.
- the upper and lower rails 13 and 15 are mounted articulated on the plane of rise 3. They are connected to one another by two parallel lateral rod rods 17. Similarly, the lower beam 15 is connected to the plate 11 by two links parallel side 19 so that the working platform 7 can be folded from its open position in use where the plate 11 is in horizontal position locked to the plane of stand 5 to an off position. In this off position, the stand plane 5 is brought against the climb plane 3 ( figure 3 ), substantially parallel thereto and the upper and lower 13 and lower rails 15 as well as the plate 11 are brought back by the parallelogram triangulation of their connection, substantially parallel to the plane of rise and low volume of space in this position.
- the top rail 13 is closed and rectangular in outline, providing the guardrail function for the operator at this height level.
- the lower rail 15 is open on the climb plane side to allow access of the operator 9 to the platform 7 and its descent, being substantially U-shaped open on the side of the rise plane 3.
- this opening plane plane side 3 of the lower rail 15 In the service position, this opening plane plane side 3 of the lower rail 15 must be closed to ensure the guardrail function of the operator at its height.
- This function is performed by a movable rod 21, U-shaped substantially opposite the lower rail 15, articulated to the upper rail 13, and closing the opening of the lower rail 15 in the service inclined position. In this position, this arm 21 being articulated by its ends laterally to the top rail 13, it rests inclinedly on the lower rail 15, at the end of its U-shaped branches.
- this smooth articulated mobile 21 is locked in position integrally with the lower rail 15.
- the locking is performed automatically, by hooks 23 formed at the end of the U-shaped legs of the lower rail 15 and having an articulated spout 25 retracting at the passage of the tube of the rail 21 by its weight on them ( figure 6 ) and spring-return (spiral 27) on the smooth tube 21 after passage of the smooth tube 21 at the bottom of the hook 23 ( figure 7 ).
- the operator can then climb on the climb plane 3 ( figure 5 ), by its steps or rungs, lift the movable boom 21 to enter the working platform 7 and let it fall into automatic hooking on the lower rail 15 as mentioned above. It can then rest on the support plate 11 of the platform and work safely, having an upper rail 13 closed at its height and lower even at the lower rail 15.
- the descent is effected in a reverse maneuver to the previous one by manually unhooking the mobile boom 21 of the lower rail 15 (manual action on the beaks 25) and raising it to allow the operator to descend from the platform 7 to the plane climb 3.
- the folding of the step into the off position is effected by unhooking the plate 11 of the sill plane 5 and bringing it back to the plane of climb 3.
- the step can be fixed, non-folding, comprising a movable boom hinged to the plane of rise or to the upper rail of the working platform, this mobile rail closing the lower rail in the service position and being adapted to be raised for allow the operator to climb or descend.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
Description
L'invention concerne un marchepied et, en particulier, un marchepied dont la plateforme de travail est à fermeture automatique.The invention relates to a step and, in particular, a step whose work platform is self-closing.
On connaît les marchepieds avec plateforme de travail à fermeture de la plateforme par un portillon ou une chaînette. Néanmoins, les opérateurs oublient parfois de fermer et verrouiller le portillon ou la chaînette de fermeture de la plateforme de sorte qu'ils ne sont pas disposés en sécurité sur leur plateforme, et peuvent basculer accidentellement hors de celle-ci.Steps are known with a work platform closing the platform by a gate or a chain. Nevertheless, operators sometimes forget to close and lock the gate or the closing chain of the platform so that they are not arranged safely on their platform, and can accidentally tilt out of it.
L'invention vise à remédier à cet inconvénient et propose un marchepied comportant un plan de montée, un plan de béquille et une plateforme de travail, laquelle est pourvue d'un plateau support d'un opérateur, d'une lisse supérieure fermée et d'une lisse inférieure ouverte côté plan de montée, caractérisé en ce qu'il comporte une lisse mobile articulée à la lisse supérieure ou au plan de montée sensiblement au même niveau de hauteur que la lisse supérieure ou sous celle-ci, cette lisse étant apte à reposer sur la lisse inférieure et à fermer la plateforme de travail au niveau de la lisse inférieure, côté plan de montée.The invention aims to overcome this disadvantage and proposes a step comprising a climbing plane, a crutch plane and a working platform, which is provided with a support plate of an operator, a closed upper smooth and d a lower rail open planar side side, characterized in that it comprises a movable boom articulated to the upper rail or to the plane of rise substantially at the same height as the upper rail or under it, this rail being suitable to rest on the lower rail and to close the working platform at the lower rail, on the ascent plane.
Le marchepied peut être repliable et la plateforme de travail est apte à être développée en position de service lors de l'ouverture du marchepied et à être rabattue sensiblement dans le plan de montée en position hors service.The step can be foldable and the working platform is adapted to be developed in the service position when opening the step and to be folded substantially in the plan to off position.
De plus, dans un mode de réalisation avantageux, la lisse supérieure est reliée à la lisse inférieure au moyen d'au moins une première biellette latérale articulée à celles-ci, la lisse inférieure est reliée au plateau au moyen d'au moins une seconde biellette latérale articulée à ceux-ci et sensiblement parallèle à la première biellette, la lisse supérieure comprend en outre une lisse mobile articulée à celle-ci et disposée dans le plan de montée du marchepied, cette lisse mobile étant apte à fermer l'ouverture de plateforme vers le plan de montée, au niveau de la lisse inférieure, reposant par son poids sur la lisse inférieure, ladite lisse mobile étant en outre apte à être relevée pour permettre le passage d'un opérateur en montée vers la plateforme ou en descente de celle-ci.In addition, in an advantageous embodiment, the upper rail is connected to the lower rail by means of at least one first lateral link articulated thereto, the lower rail is connected to the platform by means of at least one second lateral link articulated thereto and substantially parallel to the first link, the upper rail further comprises a movable boom hinged thereto and disposed in the plane of the step of the step, this movable rail being able to close the opening of platform towards the plane of rise, at the level of the lower rail, resting by its weight on the lower rail, said movable boom being further adapted to be raised to allow the passage of an operator uphill to the platform or downhill of it.
Il résulte de cette disposition que la lisse mobile articulée au plan de montée ou à la lisse supérieure constitue un système de fermeture automatique de la plateforme de travail pour l'opérateur, une fois qu'il est sur cette plateforme et il n'a plus à se préoccuper de la fermeture de la plateforme puisque celle-ci est assurée automatiquement par retombée de la lisse mobile sur la lisse inférieure.As a result of this arrangement, the mobile boom articulated to the plane of rise or to the top rail constitutes a system of automatic closure of the work platform for the operator, once he is on this platform and he no longer has to worry about the closure of the platform since it is ensured automatically by fallout of the mobile boom on the lower rail.
La lisse mobile peut être tubulaire et a une forme de U dont les branches parallèles sont articulées par leur extrémité latéralement à la lisse supérieure ou au plan de montée.The movable boom may be tubular and has a U-shape whose parallel branches are hinged at their end laterally to the upper rail or the plane of rise.
De façon avantageuse, la lisse mobile est apte à être crochetée automatiquement en position basse, par son propre poids, sur la lisse inférieure, au moyen d'au moins un crochet à bec articulé s'escamotant au passage de crochetage du tube de la lisse mobile et à rappel de fermeture sur le tube de la lisse mobile après passage de celui-ci au fond du crochet.Advantageously, the mobile arm is adapted to be automatically hooked in the lower position, by its own weight, on the lower rail, by means of at least one hook with articulated spout retracting the hooking passage of the tube of the smooth mobile and closing reminder on the tube of the mobile boom after passage thereof at the bottom of the hook.
L'invention est décrite ci-après à l'aide d'un exemple de réalisation et en référence aux dessins annexés, sur lesquels :
- la
figure 1 est une vue en perspective d'un marchepied selon l'invention en position de service, - la
figure 2 est une vue de côté du marchepied en position de service, - la
figure 3 montre selon une vue de côté le marchepied en position fermée hors service, - la
figure 4 est une vue de côté du marchepied dans son développement intermédiaire en ouverture de service, - la
figure 5 est une vue du marchepied en position de service, montrant le basculement en ouverture de la lisse mobile au passage d'un opérateur, et - les
figures 6 et 7 montrent le crochetage de verrouillage de la lisse mobile, respectivement, en ouverture de crochetage de la lisse mobile et en verrouillage de fermeture de celle-ci.
- the
figure 1 is a perspective view of a step according to the invention in the service position, - the
figure 2 is a side view of the step in the service position, - the
figure 3 shows in a side view the step in the closed position out of service, - the
figure 4 is a side view of the step in its intermediate development in service opening, - the
figure 5 is a view of the step in the operating position, showing the tilting opening of the movable boom to the passage of an operator, and - the
Figures 6 and 7 show the locking hooking of the movable boom, respectively, hook opening opening of the movable rail and locking closure thereof.
Avec référence aux figures et en particulier aux
La plateforme de travail 7 est destinée à supporter en sécurité une personne ou un opérateur 9.The
Cette plateforme 7 comporte un plateau inférieur 11 support de l'opérateur 9 articulé sur le plan de montée 3 et venant en appui sur le plan de béquille 5, une lisse supérieure 13 fermée formant garde-corps de l'opérateur et disposée à environ un mètre au-dessus du plateau 11 support de l'opérateur, et une lisse inférieure 15 ouverte côté plan de montée et formant également élément garde-corps de l'opérateur en position basse et disposée à environ un demi-mètre dudit plateau support 11.This
Les lisses supérieure 13 et inférieure 15 sont montées articulées sur le plan de montée 3. Elles sont reliées l'une à l'autre par deux tiges biellettes latérales parallèles 17. De même, la lisse inférieure 15 est reliée au plateau 11 par deux biellettes latérales parallèles 19 de sorte que la plateforme de travail 7 peut être repliée de sa position d'ouverture en service où le plateau 11 est en position horizontale verrouillée au plan de béquille 5 à une position hors service. A cette position hors service, le plan de béquille 5 est ramené contre le plan de montée 3 (
Comme mentionné ci-dessus, la lisse supérieure 13 est fermée et de contour rectangulaire, assurant la fonction de garde-corps pour l'opérateur à ce niveau de hauteur. Néanmoins, la lisse inférieure 15 est ouverte côté plan de montée pour permettre l'accès de l'opérateur 9 à la plateforme 7 et sa descente, étant sensiblement à forme de U ouvert du côté du plan de montée 3. En position de service, cette ouverture côté plan de montée 3 de la lisse inférieure 15 doit être fermée pour assurer la fonction garde-corps de l'opérateur au niveau de sa hauteur. Cette fonction est réalisée par une lisse mobile 21, à forme de U sensiblement opposé à la lisse inférieure 15, articulée à la lisse supérieure 13, et fermant l'ouverture de la lisse inférieure 15 en position inclinée de service. Dans cette position, cette lisse 21 étant articulée par ses extrémités latéralement à la lisse supérieure 13, elle repose de façon inclinée sur la lisse inférieure 15, à l'extrémité de ses branches en U. Bien que cette position de fermeture automatique par son propre poids puisse convenir, il est préférable que cette lisse mobile articulée 21 soit verrouillée en position solidairement à la lisse inférieure 15. Le verrouillage est réalisé de façon automatique, par des crochets 23 formés à l'extrémité des branches en U de la lisse inférieure 15 et comportant un bec articulé 25 s'escamotant au passage du tube de la lisse 21 par son poids sur ceux-ci (
Le fonctionnement du marchepied selon l'invention est à présent décrit.The operation of the step according to the invention is now described.
Il s'agit dans un premier temps d'ouvrir le marchepied depuis sa position repliée hors service (
L'opérateur peut alors monter sur le plan de montée 3 (
La descente s'effectue selon une manoeuvre inverse à la précédente en décrochetant manuellement la lisse mobile 21 de la lisse inférieure 15 (action manuelle sur les becs 25) et en la relevant pour permettre à l'opérateur de descendre de la plateforme 7 au plan de montée 3.The descent is effected in a reverse maneuver to the previous one by manually unhooking the
Le repliement du marchepied en position hors service s'effectue en décrochetant le plateau 11 du plan de béquille 5 et en ramenant ce dernier vers le plan de montée 3.The folding of the step into the off position is effected by unhooking the
Des variantes de réalisation de l'invention peuvent être imaginées dans le cadre de l'invention.Alternative embodiments of the invention may be devised within the scope of the invention.
Par exemple, le marchepied peut être fixe, non repliable, comprenant une lisse mobile articulée au plan de montée ou à la lisse supérieure de la plateforme de travail, cette lisse mobile fermant la lisse inférieure en position de service et étant apte à être relevée pour permettre la montée ou la descente de l'opérateur.For example, the step can be fixed, non-folding, comprising a movable boom hinged to the plane of rise or to the upper rail of the working platform, this mobile rail closing the lower rail in the service position and being adapted to be raised for allow the operator to climb or descend.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0706267A FR2920815A1 (en) | 2007-09-07 | 2007-09-07 | WORK PLATFORM FOOTBOARD |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2034128A1 true EP2034128A1 (en) | 2009-03-11 |
Family
ID=39357250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08290790A Withdrawn EP2034128A1 (en) | 2007-09-07 | 2008-08-20 | Steps with working platform |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2034128A1 (en) |
FR (1) | FR2920815A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103233675A (en) * | 2013-05-09 | 2013-08-07 | 苏州飞华铝制工业有限公司 | Ladder type working platform |
CN104120967A (en) * | 2014-07-03 | 2014-10-29 | 成都佳美嘉科技有限公司 | A constructional herringbone ladder |
FR3005987A1 (en) * | 2013-05-21 | 2014-11-28 | Cdh Group | FOOTBOARD WITH A GUARD RAIL AND A SEMI-RIGID ACCESS PORTILLON |
WO2017136673A1 (en) * | 2016-02-05 | 2017-08-10 | Wing Enterprises, Incorporated | Elevated working platform and related methods |
US10145176B2 (en) * | 2012-01-23 | 2018-12-04 | Wing Enterprises, Inc. | Elevated working platform and related methods |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3111940B1 (en) | 2020-06-29 | 2022-06-24 | Cdh Group | GATE LEAF FOR WORK PLATFORM AT HEIGHT AND WORK PLATFORM COMPRISING SUCH A GATE LEAF |
FR3112570B1 (en) | 2020-07-15 | 2022-09-09 | Cdh Group | DEVICE FOR WORKING AT HEIGHT WITH ARTICULATED GUARDRAIL AND AUTOMATIC GATE |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143103A1 (en) * | 2000-03-27 | 2001-10-10 | Gérard Andrey | Transportable tree stand |
US20050056489A1 (en) * | 2002-10-14 | 2005-03-17 | Walsh Michael P. | Ladder |
EP1783322A1 (en) * | 2005-11-04 | 2007-05-09 | Tubesca | Ladder with platform and foldable tubular safety cages, especially for extension ladders |
FR2897638A1 (en) * | 2006-02-22 | 2007-08-24 | Duarib Soc Par Actions Simplif | Work station for use in e.g. single ladder, has platform and railing with clamps at plane of ladder for arranging ladder in position in which railing is positioned at level higher than that of platform and cooperate with platform |
-
2007
- 2007-09-07 FR FR0706267A patent/FR2920815A1/en active Pending
-
2008
- 2008-08-20 EP EP08290790A patent/EP2034128A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143103A1 (en) * | 2000-03-27 | 2001-10-10 | Gérard Andrey | Transportable tree stand |
US20050056489A1 (en) * | 2002-10-14 | 2005-03-17 | Walsh Michael P. | Ladder |
EP1783322A1 (en) * | 2005-11-04 | 2007-05-09 | Tubesca | Ladder with platform and foldable tubular safety cages, especially for extension ladders |
FR2897638A1 (en) * | 2006-02-22 | 2007-08-24 | Duarib Soc Par Actions Simplif | Work station for use in e.g. single ladder, has platform and railing with clamps at plane of ladder for arranging ladder in position in which railing is positioned at level higher than that of platform and cooperate with platform |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10145176B2 (en) * | 2012-01-23 | 2018-12-04 | Wing Enterprises, Inc. | Elevated working platform and related methods |
CN103233675A (en) * | 2013-05-09 | 2013-08-07 | 苏州飞华铝制工业有限公司 | Ladder type working platform |
FR3005987A1 (en) * | 2013-05-21 | 2014-11-28 | Cdh Group | FOOTBOARD WITH A GUARD RAIL AND A SEMI-RIGID ACCESS PORTILLON |
CN104120967A (en) * | 2014-07-03 | 2014-10-29 | 成都佳美嘉科技有限公司 | A constructional herringbone ladder |
WO2017136673A1 (en) * | 2016-02-05 | 2017-08-10 | Wing Enterprises, Incorporated | Elevated working platform and related methods |
US10138679B2 (en) | 2016-02-05 | 2018-11-27 | Wing Enterprises, Incorporated | Elevated working platform and related methods |
CN109072670A (en) * | 2016-02-05 | 2018-12-21 | 伟英企业有限公司 | The high workbench of frame and correlation technique |
US10815728B2 (en) | 2016-02-05 | 2020-10-27 | Wing Enterprises, Incorporated | Elevated working platform and related methods |
Also Published As
Publication number | Publication date |
---|---|
FR2920815A1 (en) | 2009-03-13 |
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