EP4467749B1 - Ergonomische arbeitsbühne mit sicherheitsgeländer - Google Patents

Ergonomische arbeitsbühne mit sicherheitsgeländer

Info

Publication number
EP4467749B1
EP4467749B1 EP24168812.6A EP24168812A EP4467749B1 EP 4467749 B1 EP4467749 B1 EP 4467749B1 EP 24168812 A EP24168812 A EP 24168812A EP 4467749 B1 EP4467749 B1 EP 4467749B1
Authority
EP
European Patent Office
Prior art keywords
platform
uprights
legs
wheel
folded
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
EP24168812.6A
Other languages
English (en)
French (fr)
Other versions
EP4467749C0 (de
EP4467749A1 (de
Inventor
Yves Bugy
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.)
Aud Innov SAS
Original Assignee
Aud Innov SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aud Innov SAS filed Critical Aud Innov SAS
Publication of EP4467749A1 publication Critical patent/EP4467749A1/de
Application granted granted Critical
Publication of EP4467749C0 publication Critical patent/EP4467749C0/de
Publication of EP4467749B1 publication Critical patent/EP4467749B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned down
    • 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
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • 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
    • 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
    • E04G5/14—Railings
    • 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
    • E04G5/14—Railings
    • E04G5/141—Railings with an access door or the like therefor
    • 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
    • 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
    • E06C1/397—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 characterised by having wheels, rollers, or runners
    • 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
    • E06C7/181—Additional gripping devices, e.g. handrails
    • E06C7/182—Additional gripping devices, e.g. handrails situated at the top of 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 the technical field of climbing equipment with a work platform and folding guardrails, and more particularly concerns a safe and ergonomic work platform.
  • This platform is also advantageous in that it offers a simple, secure and rapid deployment process.
  • the guardrail is notably articulated in relation to two parallel secondary uprights, which are mounted to pivot around an axis of articulation relative to the uprights of the climbing plane to switch from a deployed position in line with said uprights to a folded position against the climbing plane, the guardrail and the control rods being, in the folded position, folded against the secondary uprights.
  • control rods are, on the one hand, mounted to pivot relative to the uprights of the lifting platform around a common articulation axis with that of the secondary uprights and, on the other hand, articulated on collars mounted to slide on the guardrail.
  • this work platform has a reduced footprint because the structure supporting the guardrail, namely the secondary uprights, and the control rods can be tilted and folded against the access surface along a single pivot point.
  • This shared pivot point also reduces the work platform's footprint when folded for storage.
  • the resistance and stability of the guardrail is optimal since the forces are concentrated, via the pivot points, on the uprights of the climbing plane.
  • One of the aims of the invention is to overcome the disadvantages of the prior art, by proposing a folding work platform with safety guardrails whose maneuverability and ergonomics of use are improved.
  • Another objective is to provide such a platform with minimized production costs.
  • Another objective is to provide such a platform, similar to that of the document EP3415707 , the length and folded position is reduced for transport and storage, without the modifications to its structure altering the automaticity of its deployment and folding, its resistance or its stability in the deployed state.
  • the lower ends of the support legs and uprights are each equipped with a retractable wheel to move from a position of use in which the wheel does not support the platform and the corresponding leg or upright is in contact with the ground, in a moving position in which the wheel supports the platform and the corresponding leg or upright is lifted off the ground.
  • the platform according to the invention is easy to handle and ergonomic. It can be easily moved by an operator when it is in its deployed position for use, without needing to be lifted or folded.
  • each wheel is retractable to move from the movement position when the platform is not loaded, by being pushed by a spring, to the use position when the platform is loaded, by being moved against the spring.
  • the retractable wheels are attached to the legs and uprights by means of a U-shaped bracket that laterally covers said legs and uprights, and a sleeve integral with the bracket that receives a rod at the end of which the wheel is mounted.
  • the wheel is free to pivot around the rod to facilitate the maneuverability of the platform when it is moved, and the rod is mounted to slide downwards, pushed by the spring.
  • the shoe is fixed to the legs and uprights at an angle so that, in the platform's operating position, the stem extends substantially vertically to minimize mechanical stress on the stem.
  • This form of production offers optimal ergonomics with a reduced manufacturing cost.
  • the support legs are formed from a single tube bent in the shape of an inverted U.
  • Using a single bent tube to form the support legs allows for a lightweight platform that is therefore easier to handle and move, and thus more ergonomic.
  • the base of the inverted U-shaped bent tube is folded forward to form a lower rail and a carrying handle, making it even more ergonomic to use. Integrating these features also reduces manufacturing costs and the platform's weight, as no additional parts are required. The reduced weight contributes to the platform's overall ergonomics.
  • a second curved tube of generally rectangular shape is positioned between the arms of the U-shaped tube to reinforce and stabilize the support legs, and also form a support at one front end of the floor in the position of use.
  • the stability of the support legs is increased, which also allows for a reduction in the cross-section of the tubes and further savings in costs and weight, thus contributing to the improvement of the ergonomics and maneuverability of the platform.
  • the central upper portion of the curved rectangular tube includes means for locking a rung of the riser when the floor is in the folded position.
  • Ergonomics are improved because folding the platform automatically locks the end of one of the bars to the front surface, securing the storage position. Positioning the locking mechanisms on the second curved tube, at the level of the front surface formed by the support legs, does not hinder the user when stepping onto the platform.
  • the locking means are in the form of a spring blade having a recessed central portion to form a housing for receiving and locking the bar.
  • the operation is simple and ergonomic for the operator, the locking is automatic and to unlock, he simply has to lower the free end of the spring blade which forms a tab.
  • the invention relates to a secure work platform (1) with a folding work floor (2) and guardrails (3), the size of which is reduced to facilitate its transport, particularly in a vehicle compact commercial vehicle.
  • the platform (1) according to the invention also has increased maneuverability and ergonomics compared to those of the prior art, while maintaining low manufacturing costs.
  • the work platform (1) includes a ramp (4), consisting of two parallel uprights (4a) joined by rungs (4b) forming steps, and by an upper rung (4c) for the articulation of a work floor (2).
  • the work platform (1) comprises two support legs (5) formed by a single inverted U-shaped bent tube.
  • the base (5a) of the inverted U-shaped bent tube is folded to form a lower rail and a carrying handle.
  • a second curved tube (6) is positioned between the arms of the U-shaped first curved tube (5) to reinforce and stabilize the support legs (5), and also to provide support at one front end of the platform (2) in its working position, as described below.
  • Each leg (5) is hinged to the upper side of one of the uprights (4a) to occupy a storage position against the uprights (4a), or a stabilizing position, as illustrated, when moved away from the uprights (4a).
  • the ends of the support legs (5) are angled away from each other to optimize the stability of the work platform (1).
  • the lower rail is an integral part of the support legs (5) and is located in line with them also allows the length of the work platform (1) to be reduced in the folded position. Indeed, tilting the support legs (5) against the ramp (4) allows the lower rail to be inclined downwards and the length of the work platform (1) to be reduced.
  • the lower ends of the support legs (5) and the uprights (4a) are each equipped with a retractable wheel (7) to move from a position of use in which the wheel (7) does not support the platform (1), and the corresponding leg (5) or upright (4a) is in contact with the ground, to a position of movement in which the wheel (7) supports the platform (1) and the corresponding leg (5) or upright (4a) is lifted from the ground.
  • each wheel (7) is retractable, preferably by being pushed by a spring (8) to move from the position of movement when the platform is not loaded, to the position of use when the platform is loaded, against the spring (8).
  • the retractable wheels (7) are fixed to the legs (5) and uprights (4a) by means of a U-shaped shoe (9) which fits laterally over said legs (5) and uprights (4a) and includes a sleeve (10) integral with the shoe (9), illustrated in transparency on the [ Fig.3 receiving A rod (11) at the end of which the wheel (7) is mounted.
  • the wheel (7) is free to pivot around the rod (11), and the rod (11) is mounted to slide downwards by being pushed by the spring (8), specifically against an upper part of the sleeve (10).
  • the wheel (7) is pushed away from the sleeve until it abuts against an end stop on the rod (7) and thus passes into the position in which the wheels lift and support the platform.
  • the shoe (9) is preferably fixed to the legs and uprights at an angle so that in the platform's use position, the rod (11) extends substantially vertically.
  • the work platform (2) is hinged between the two uprights (4a) of the platform (4) and the two support legs (5). More specifically, the work platform (2) is pivotally mounted on the upper bar (4c) of the platform (4) to pivot between a folded position against the platform (4) and a horizontal operating position, locked against the central portion of the second curved tube (6), which is generally rectangular in shape.
  • the work platform (2) is connected to the support legs (5) by two pivoting lateral arms (2a).
  • the central upper portion of the second curved tube (6) in the shape of a rectangle includes locking means (12) of a front end of the floor (2), and more specifically of the upper bar (4c) of the climbing plane when the floor (2) is in the folded position.
  • the locking means (12) are in the form of a spring-loaded leaf having a recessed central portion to form a housing for receiving and locking the upper bar (4c), see figures 4 And 5 .
  • the locking mechanism is automatic and to unlock, simply lower the free end of the spring blade which forms a tab.
  • the guardrail (3) of the platform (1) is foldable and U-shaped, the lateral arms of which are articulated to the tops of the uprights (4a).
  • Two control rods (13) allow the guardrail (3) to be deployed into the safety position.
  • the control rods (13) are, on the one hand, pivotally mounted relative to the uprights (4a) of the access platform (4) and, on the other hand, articulated on clamps that slide along the guardrail (3).
  • the guardrail (3) and the control rods (13) are folded against the uprights (4a), which are folded against the access platform (4).
  • the invention does indeed provide a folding work platform with safety guardrails, the handling and ergonomics of which are improved, while having minimized production costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Claims (7)

  1. Arbeitsplattform (1), umfassend:
    - zwei parallele Holme (4a), die durch Sprossen (4b, 4c) miteinander verbunden sind, um eine Steigebene (4) zu bilden;
    - zwei Stützbeine (5), die jeweils an einem oberen Ende mit einem der Holme (4a) gelenkig verbunden sind, um entweder eine Verstauposition gegen die Holme (4a) oder eine Stabilisierungsposition, in der sie von den Holmen (4a) beabstandet sind, einzunehmen;
    - eine Plattform (2), die zwischen den beiden Holmen (4a) und den beiden Stützbeinen (5) gelenkig befestigt ist und zwischen einer horizontalen Arbeitsposition, wenn sich die Beine (5) in der Stabilisierungsposition befinden, und einer gegen die Steigebene (4) geklappten Position, wenn sich die Beine (5) in der Verstauposition befinden, umklappbar ist;
    - ein Geländer (3), das an der Oberseite der Steigebene (4) angeordnet ist;
    die unteren Enden der Stützbeine (5) und der Holme (4a) sind jeweils mit einem einziehbaren Rad (7) versehen, das den Übergang von einer Arbeitsposition, in der das Rad (7) die Plattform (1) nicht trägt und das entsprechende Bein (5) oder der Holm (4a) auf dem Boden aufliegt, zu einer Transportposition ermöglicht, in der das Rad (7) die Plattform (1) trägt und das entsprechende Bein (5) oder der Holm (4a) vom Boden abgehoben ist,
    dadurch gekennzeichnet, dass die Stützbeine (5) aus einem einzigen gebogenen Rohr (5) in umgekehrter U-Form bestehen und dass ein zweites gebogenes Rohr (6) mit im Wesentlichen rechteckiger Form zwischen den Schenkeln der U-Form des gebogenen Rohrs (5) angeordnet ist, um an einem vorderen Ende der Plattform (2) in Arbeitsposition eine Stütze zu bilden.
  2. Plattform (1) nach Anspruch 1, dadurch gekennzeichnet, dass jedes Rad (7) einziehbar ist, um von der Transportposition, wenn die Plattform (1) unbelastet ist und durch eine Feder (8) nach außen gedrückt wird, in die Arbeitsposition überzugehen, wenn die Plattform (1) belastet ist und das Rad (7) gegen die Feder (8) verschoben wird.
  3. Plattform (1) nach Anspruch 2, dadurch gekennzeichnet, dass die einziehbaren Räder (7) an den Beinen (5) und Holmen (4a) über einen U-förmigen Schuh (9) befestigt sind, der die genannten Beine (5) und Holme (4a) seitlich übergreift und eine mit dem Schuh (9) fest verbundene Hülse (10) umfasst, die eine Stange (11) aufnimmt, an deren Ende das Rad (7) montiert ist, wobei das Rad (7) frei um die Stange (11) drehbar ist und die Stange (11) nach unten verschiebbar gelagert ist und durch die Feder (8) nach unten gedrückt wird.
  4. Plattform (1) nach Anspruch 3, dadurch gekennzeichnet, dass der Schuh (9) an den Beinen (5) und Holmen (4a) schräg befestigt ist, sodass sich in der Arbeitsposition der Plattform (1) die Stange (11) im Wesentlichen vertikal erstreckt.
  5. Plattform (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Basis (5a) des gebogenen Rohrs in umgekehrter U-Form nach vorne gefaltet ist, um eine untere Traverse und einen Tragegriff zu bilden.
  6. Plattform (1) nach Anspruch 1, dadurch gekennzeichnet, dass der zentrale obere Abschnitt des zweiten gebogenen Rohrs (6) Verriegelungsmittel (12) für eine Sprosse (4c) der Steigebene (4) aufweist, wenn sich die Plattform (2) in der eingeklappten Position befindet.
  7. Plattform (1) nach Anspruch 6, dadurch gekennzeichnet, dass die Verriegelungsmittel (12) in Form einer Blattfeder ausgebildet sind, die einen vertieften Mittelabschnitt aufweist, um eine Aufnahme- und Verriegelungsausnehmung für die Sprosse (4c) zu bilden.
EP24168812.6A 2023-05-23 2024-04-05 Ergonomische arbeitsbühne mit sicherheitsgeländer Active EP4467749B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2305052A FR3149036B1 (fr) 2023-05-23 2023-05-23 Plateforme de travail ergonomique avec garde-corps de sécurité

Publications (3)

Publication Number Publication Date
EP4467749A1 EP4467749A1 (de) 2024-11-27
EP4467749C0 EP4467749C0 (de) 2025-12-24
EP4467749B1 true EP4467749B1 (de) 2025-12-24

Family

ID=87571332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24168812.6A Active EP4467749B1 (de) 2023-05-23 2024-04-05 Ergonomische arbeitsbühne mit sicherheitsgeländer

Country Status (2)

Country Link
EP (1) EP4467749B1 (de)
FR (1) FR3149036B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230167683A1 (en) * 2020-10-14 2023-06-01 Werner Co. Ladder, components thereof, and accessories for use therewith

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7523103U (de) * 1975-07-19 1976-02-19 Spimeta B.V., Harkema (Niederlande) Haushalts-hocker mit trittstufen
US7841447B2 (en) * 2006-09-11 2010-11-30 Ballymore Company, Inc. Ladder with removable step and method of storing the ladder in a compact container
FR2998329B1 (fr) * 2012-11-22 2015-04-03 Roll S Rapides Marchepied de travail pliant
FR3005987B1 (fr) * 2013-05-21 2015-06-05 Cdh Group Marchepied muni d'un garde-corps et d'un portillon d'acces semi-rigide
FR3066223B1 (fr) * 2017-05-09 2019-06-14 Cdh Group Systeme de fixation de roulette escamotable de marchepied, et marchepied comprenant au moins un systeme de fixation de roulette escamotable
FR3067742B1 (fr) 2017-06-16 2019-07-05 Aud Innov Plateforme de travail repliable d'encombrement reduit avec garde-corps de securite
CN210396601U (zh) * 2019-04-30 2020-04-24 苏州中创铝业有限公司 一种梯子

Also Published As

Publication number Publication date
EP4467749C0 (de) 2025-12-24
FR3149036B1 (fr) 2025-05-02
FR3149036A1 (fr) 2024-11-29
EP4467749A1 (de) 2024-11-27

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