WO2014132281A1 - Echafaudage pliant avec échelle intégrée - Google Patents

Echafaudage pliant avec échelle intégrée Download PDF

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Publication number
WO2014132281A1
WO2014132281A1 PCT/IT2014/000057 IT2014000057W WO2014132281A1 WO 2014132281 A1 WO2014132281 A1 WO 2014132281A1 IT 2014000057 W IT2014000057 W IT 2014000057W WO 2014132281 A1 WO2014132281 A1 WO 2014132281A1
Authority
WO
WIPO (PCT)
Prior art keywords
hinge
scaffold
horizontal axis
platform
pairs
Prior art date
Application number
PCT/IT2014/000057
Other languages
English (en)
Inventor
Franco MONTANI
Original Assignee
Montani Franco
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 Montani Franco filed Critical Montani Franco
Publication of WO2014132281A1 publication Critical patent/WO2014132281A1/fr

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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
    • E04G1/34—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
    • E04G2001/242—Scaffolds movable on wheels or tracks

Definitions

  • the invention relates to the field of equipment for hobbies and for work.
  • the invention concerns a folding scaffold with built in ladder, formed by a series of linear elements hinged to one another, wherein these elements are folded and moved toward one another to take the minimum overall dimensions, adapted to change rapidly from a closed configuration to an open configuration for use.
  • scaffolds are light structures, movable scaffolds used above all for small building or cleaning jobs, also in a domestic environment, or where there is the need to reach modest heights and stand at a certain height in total safety and comfort.
  • Conventional scaffolds are essentially formed by two frames with vertical uprights, a plurality of oblique crosspieces that regulate concertina opening, a platform and a plurality of horizontal rods for connection. Said rods are hinged to the uprights, by means of screws or pins, in order to allow the scaffold to be folded up to change from said open operating position to said closed position with minimum overall dimensions.
  • these scaffolds require manual operations to assemble and fasten some of their components, in particular said rods for connection of the frames.
  • Patent application No. PC2007U000015 by the same applicant discloses a folding scaffold as described above, comprising a plurality of rods, acting as locking elements and as a parapet for the scaffold when it is in the open position. These rods comprise one end hinged directly to the vertical frames, while the opposite end must be fastened manually by the user to the same frames, by means of screws and pins.
  • Patent application No. BG2009A000052 filed by SVELT SPA deals with and solves this problem only partly, entrusting the function of stabilizing the scaffold not to a plurality of rods to be fastened to the frames, but to a safety bolt adapted to lock oblique struts in position when the scaffold is open. However, the locking operation is once again manual and must be carried out by the user. If the user carries out this operation incorrectly, carelessly or forgets to carry it out, the scaffold could accidentally close and fold up during use, endangering the user.
  • rods acting as parapet are arranged horizontally in a substantially automatic manner, they must then be locked by means of a chain provided at their ends, maintained projecting elastically by a spring and adapted to be inserted in a corresponding hole provided on the vertical uprights.
  • a chain provided at their ends, maintained projecting elastically by a spring and adapted to be inserted in a corresponding hole provided on the vertical uprights.
  • the user in order to compress the spring and insert the chain into the hole the user must use force, and if the hole is positioned at a height from the ground it may be difficult to reach by users of short stature.
  • the opening kinematic mechanism of the scaffold also comprises slots obtained under the platform inside which pins, arranged at the ends of the crosspieces, slide between two limit positions.
  • dirt can deposit inside said slots positioned under the platform and this can compromise sliding of the pins, which can become damaged, deformed or slip out of the slots.
  • the structure is particularly unstable before the components are locked, obliging the operator to use considerable physical force to keep it balanced during opening of the scaffold.
  • the invention aims to overcome these limits.
  • the object of the invention is to produce a scaffold that does not require any assembling of components, can be easily opened into its configuration for use and can also be easily closed after use, without it being necessary to assemble the single elements of which it is formed or to use special tools to fasten these elements.
  • Another object of the invention is to produce a scaffold that is safe, stable both in open configuration and during transition from the closed configuration to the configuration for use, and vice versa, light to handle, with minimum overall dimensions in closed configuration and with easy access to its platform.
  • a folding scaffold with built in ladder comprising:
  • said platform comprises a first and a second half-platform constrained to two pairs of supporting connecting rods, each with a central hinge with horizontal axis, both having an end connected by means of a first hinge with horizontal axis to said first frame and a second end connected by means of a second hinge with horizontal axis to said second frame;
  • crosspieces for connection of said frames, wherein said crosspieces comprise first ends connected at the base of the respective vertical uprights by means of a third and a fourth hinge with horizontal axis,
  • said oblique crosspieces comprise second ends connected to one another by means of a fifth hinge with horizontal axis, adapted to allow transition from a flattened closed configuration of said scaffold to an open configuration suitable for use of the same scaffold, cooperating with said horizontal platform.
  • said oblique crosspieces are rigidly locked together with triangulation implemented by means of two pairs of base connecting rods, each with a central hinge with horizontal axis interposed, and having both ends connected to said vertical uprights and to said oblique crosspieces at said third and fourth hinge with horizontal axis.
  • said scaffold comprises two vertical guides constrained to the central hinges of said pairs of supporting connecting rods and to the central hinges of said pairs of base connecting rods, wherein each guide comprises a slot in which the horizontal axis of said fifth hinge of said two pairs of oblique crosspieces slides freely.
  • said scaffold comprises horizontal parapet rods joining the tops of said frames with vertical uprights.
  • each parapet rod comprises two mutually hinged connecting rods having the ends connected to said uprights, respectively at a sixth and at a seventh hinge with horizontal axis.
  • said scaffold comprises locking means for said parapet rods, adapted to ensure greater stability of the scaffold in open configuration.
  • one of said half- platforms comprises lateral hinges adapted to allow it to be lifted with respect to the plane containing said pairs of supporting connecting rods and, advantageously, a ladder is interposed between two oblique crosspieces for climbing to the horizontal platform, after lifting a half- platform.
  • wheels are provided at the base of one of said frames with vertical uprights, raised with respect to the ground support of said scaffold.
  • the folding scaffold according to the invention advantageously does not require any particular manual operation during assembly, as all the parts of which it is formed are already permanently connected to one another, constrained by means of hinges, and do not require to be manually fastened by the user, but are automatically positioned when the scaffold is opened, which takes place simply by translating its vertical frames.
  • said fifth hinge for connection of the ends of said oblique crosspieces improves the opening kinematic mechanism of the scaffold, without using slots and pins which, in the long term, could become worn, deformed or jammed as a result of dirt.
  • Said base connecting rods for connection of the ends of said crosspieces produce, with the same crosspieces, an isostatic triangle and ensure maximum stability of the mobile scaffolding in open configuration.
  • Said connecting rods are arranged in horizontal position during opening of the scaffold completely automatically and no further safety devices, such as bolts to be positioned manually, are necessary.
  • Said vertical guides maintain the scaffold correctly aligned both during opening and during closing: in particular, the two frames with vertical uprights remain perfectly parallel to each other at all times, as do the various horizontal connecting rods, without the risk of bending or of damaging to the hinges.
  • the parapet rods are also produced by means of connecting rods automatically arranged in horizontal position during opening of the scaffold, without requiring the user to position the rods and fasten their ends.
  • the wheels allow practical and easy movement of the scaffold.
  • the geometry of the scaffold according to the invention is very simple and its kinematic mechanisms are completely automatic, to obtain maximum ease of movement and positioning.
  • the user is not required to use physical force or carry out demanding assembly and disassembly operations to change from the open configuration of the scaffold to the closed configuration, and vice versa .
  • the scaffold according to the invention is therefore practical and safe, can also be used advantageously in schools, where there are children and young people, in cleaning firms where women work, in cemeteries, where they can also be used by the elderly in total safety
  • Figs 1 -3 represent, in a schematic side view, a folding scaffold with built in ladder according to the invention, respectively in closed configuration, during opening and in extended configuration for use:
  • Fig. 4 represents, in a front view, a detail of the scaffold according to the invention during opening as shown in Fig. 2;
  • Fig. 5 represents, in an axonometric view, the scaffold of Fig. 3 with the platform lifted and during use.
  • FIGs. 1 -3 and 5 show a folding scaffold 1 with built in ladder 2, essentially comprising a first 3 and a second 5 frame with parallel vertical uprights 4, 6 connected by means of a horizontal platform 7.
  • Said frames 3, 5, as well as the other parts forming the scaffold 1 can be made of wood or of tubular metal elements, preferably in aluminium, which has a low specific weight and makes the scaffold as a whole lighter and easier to transport.
  • Said platform 7 comprises a first T and a second 7" half-platform arranged side by side.
  • Said first T and second 7" half-platforms are supported by two pairs of connecting rods 8 with a central hinge 18 with horizontal axis.
  • Each pair of connecting rods 8 has a first end 8' connected to said first frame 3 by means of a first hinge C1 with horizontal axis and a second end 8" connected to said second frame 5 by means of a second hinge C2 with horizontal axis.
  • said two pairs of supporting connecting rods 8 allow rotation of the two half-platforms 7', 7", which can in this way change from a vertical position, when the scaffold 1 is folded, to a horizontal position, when the scaffold 1 is in open configuration and the platform 7 is extended.
  • Said scaffold 1 comprises two pairs of oblique crosspieces 9, 19 for further connection of said frames 3, 5.
  • a first pair of oblique crosspieces 9 comprise a first end 9' connected at the base of said first vertical uprights 4 by means of a third hinge C3 with horizontal axis.
  • a second pair of oblique crosspieces 19 comprise a first end 19' connected to the base of said second vertical uprights 6 by means of a fourth hinge C4 with horizontal axis.
  • the second ends 9", 19" of said first 9 and second 19 pair of oblique crosspieces are instead hinged to one another at a fifth hinge C5 with horizontal axis.
  • the axis of said fifth hinge C5 can act as a support for said platform 7 cooperating with its supporting connecting rods 8, when the scaffold is in its open configuration.
  • said pairs of oblique crosspieces 9, 19 are rigidly locked together with triangulation implemented by means of two pairs of base connecting rods 10, each provided with a central hinge 11 with horizontal axis, arranged at the base of the same scaffold.
  • Each pair of base connecting rods 10 have ends 10', 10" connected simultaneously to said frames 3, 5 and to said oblique crosspieces 9, 19 at said third C3 and fourth C4 hinge with horizontal axis.
  • said pairs of base connecting rods 10 are arranged side by side and parallel to the vertical uprights 4, 6 of said frames 3, 5, while they can rotate and take a position substantially perpendicular to said uprights 4, 6 during opening of the scaffold 1.
  • Said scaffold 1 comprises two vertical guides 12 constrained at their ends to the central hinges 18 of said pairs of supporting connecting rods 8 of the platform 7 and to the central hinges 11 of said pairs of base connecting rods 10.
  • Each guide 12 comprises a slot 13 in which the horizontal axis of said fifth hinge C5 of said two pairs of oblique crosspieces 9, 19 slides freely. As shown in Figs. 2 and 4, during opening and closing of the scaffold 1 , the axis of said fifth hinge C5 translates vertically inside said slot 13, remaining confined therein.
  • Said guides 12 thus prevent, during opening and closing of the scaffold 1 , the frames 3, 5, the pairs of connecting rods 8, 10 and the pairs of oblique crosspieces 9, 19 from bending and becoming misaligned, damaging the connecting hinges.
  • connection of the guides 12 to the central hinges 18, 11 of said supporting connecting rods 8 and of said base connecting rods 10 enables said connecting rods 8, 10 to move synchronously with one another as a result of translation of said frames 3, 5.
  • Said scaffold 1 also comprises horizontal rods joining the top of said frames 3, 5 with vertical uprights and acting as a parapet for the user, in open configuration, as shown in Fig. 5.
  • Each parapet rod comprises a pair of connecting rods 14 having the ends 14', 14" connected to said vertical uprights 4, 6, respectively at a sixth C6 and seventh C7 hinge with horizontal axis.
  • said horizontal rods can advantageously be fastened at the hinges 17 of the connecting rods 14 of which they are formed by means of suitable locking means 15.
  • said locking means 15 comprise two plates, arranged in proximity of the central hinges 17 of said pairs of connecting rods 14, adapted to be reversibly placed over said hinges 17, and maintained in position by means of a coupling pin, to prevent them from rotating when the scaffold 1 is open and the tubular arms are extended.
  • Said scaffold 1 is provided with built in ladder 2.
  • a ladder 2 is interposed between a pair of oblique crosspieces 9 for the user to climb to the horizontal platform 7, after lifting one of the half-platforms T of which it is formed.
  • a half-platform T is in fact constrained to only one pair of supporting connecting rods 8 by means of hinges 20 that allow it to be lifted laterally. In this way it is possible to rotate said half-platform T to take it from a horizontal position to a vertical position that frees a portion of space to enable the user to access the platform 7 by means of said ladder 2.
  • a pair of wheels 16 are provided in the lower part of the vertical uprights 6 of one of the frames 5.
  • Said wheels 16 are not in contact with the ground but are raised slightly in order not to compromise the stability of the scaffold 1 during its use. To move the scaffold 1 it is therefore sufficient to lift it slightly and tilt it toward the wheels 16, so that they rest on the ground.
  • the opening sequence of the scaffold 1 takes place as follows.
  • pairs of oblique crosspieces 9, 19 are automatically tilted and the fifth hinge C5, which connects their ends 9", 19", remains inside the slot aligned at all times.
  • the pairs of supporting connecting rods 8 of the platform 7, the pairs of parapet connecting rods 14 and the pairs of base connecting rods 10 for connection of the oblique crosspieces 9, 19, are arranged perfectly horizontal, respectively ensuring stability of the platform 7, defining the safety parapet and implementing the triangulation that locks the oblique crosspieces 9, 19.
  • the scaffold 1 is open in its extended configuration, it is sufficient to lift one of the two half-platforms T and climb the ladder 2 until reaching the half-platform 7" that has remained in horizontal position.
  • the half-platform T is lowered to be able to use the whole platform 7.
  • the scaffold 1 can be folded again by repeating the sequence of operations described above in reverse order.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Toys (AREA)

Abstract

La présente invention concerne le domaine de l'équipement de loisir et de travail. En particulier, l'invention concerne un échafaudage pliant (1) doté d'une échelle (2) intégrée, qui comprend : - un premier châssis (3) avec des montants (4) verticaux parallèles; - un second châssis (5) avec des montants (6) verticaux parallèles; - une plate-forme (7) horizontale pour le raccordement des châssis (3, 5), la plate-forme (7) comprenant une première (7') et une seconde (7") demi plate-forme contraintes à deux paires de tiges (8) de raccordement de soutien, chacune avec une charnière (18) centrale à axe horizontal, les deux ayant une extrémité (8') raccordée au moyen d'une première charnière (C1) à axe horizontal au premier châssis (3) et d'une seconde extrémité (8") raccordée au moyen d'une deuxième charnière (C2) à axe horizontal au second châssis (5); - deux paires de traverses obliques (9, 19) pour raccordement des châssis (3, 5), les traverses (9, 19) comprenant des premières extrémités (9', 19') raccordées à la base des montants (4, 6) verticaux respectifs au moyen d'une troisième (C3) et d'une quatrième (C4) charnière à axe horizontal. En particulier, les traverses obliques (9, 19) comprennent des secondes extrémités raccordées l'une à l'autre au moyen d'une cinquième charnière (C5) à axe horizontal, apte à permettre la transition entre une conception fermée aplatie de l'échafaudage (1) et une conception ouverte, apte pour une utilisation de l'échafaudage, en coopération avec la plate-forme horizontale.
PCT/IT2014/000057 2013-03-01 2014-02-27 Echafaudage pliant avec échelle intégrée WO2014132281A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCR2013A000008 2013-03-01
IT000008A ITCR20130008A1 (it) 2013-03-01 2013-03-01 Trabattello ripiegabile con scala incorporata

Publications (1)

Publication Number Publication Date
WO2014132281A1 true WO2014132281A1 (fr) 2014-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2014/000057 WO2014132281A1 (fr) 2013-03-01 2014-02-27 Echafaudage pliant avec échelle intégrée

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IT (1) ITCR20130008A1 (fr)
WO (1) WO2014132281A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2538349A (en) * 2015-03-11 2016-11-16 Cox Robert Mobile scaffolding
CN107268966A (zh) * 2017-07-05 2017-10-20 中建三局第建设工程有限责任公司 用于低位顶升模架系统的折叠式挂架及其安装方法
EP3299542A1 (fr) * 2016-09-22 2018-03-28 Alfredo Sallustio Échafaudage repliable
CN108222477A (zh) * 2017-12-27 2018-06-29 王宏斌 一种建筑施工梁架
JP2018154977A (ja) * 2017-03-16 2018-10-04 株式会社竹中工務店 可搬式作業台
FR3101088A1 (fr) * 2019-09-19 2021-03-26 Zhuhai Qan Da Industry & Commerce Co., Ltd Echafaudage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110725527A (zh) * 2019-11-09 2020-01-24 国创建设工程有限公司 翻转式爬梯操作平台

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212605A (en) * 1964-08-26 1965-10-19 Robert L Dickerson Portable scaffold
US5121812A (en) * 1989-09-28 1992-06-16 Takenaka Corporation Folding scaffold unit
US20100326938A1 (en) * 2009-06-25 2010-12-30 Shou Qiang Zhu Foldable and portable storage shelf

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212605A (en) * 1964-08-26 1965-10-19 Robert L Dickerson Portable scaffold
US5121812A (en) * 1989-09-28 1992-06-16 Takenaka Corporation Folding scaffold unit
US20100326938A1 (en) * 2009-06-25 2010-12-30 Shou Qiang Zhu Foldable and portable storage shelf

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2538349A (en) * 2015-03-11 2016-11-16 Cox Robert Mobile scaffolding
GB2538349B (en) * 2015-03-11 2021-03-31 Cox Robert Mobile scaffolding
EP3299542A1 (fr) * 2016-09-22 2018-03-28 Alfredo Sallustio Échafaudage repliable
JP2018154977A (ja) * 2017-03-16 2018-10-04 株式会社竹中工務店 可搬式作業台
CN107268966A (zh) * 2017-07-05 2017-10-20 中建三局第建设工程有限责任公司 用于低位顶升模架系统的折叠式挂架及其安装方法
CN108222477A (zh) * 2017-12-27 2018-06-29 王宏斌 一种建筑施工梁架
FR3101088A1 (fr) * 2019-09-19 2021-03-26 Zhuhai Qan Da Industry & Commerce Co., Ltd Echafaudage

Also Published As

Publication number Publication date
ITCR20130008A1 (it) 2014-09-02

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