EP3029216A1 - Système d'échafaudage - Google Patents

Système d'échafaudage Download PDF

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Publication number
EP3029216A1
EP3029216A1 EP14832072.4A EP14832072A EP3029216A1 EP 3029216 A1 EP3029216 A1 EP 3029216A1 EP 14832072 A EP14832072 A EP 14832072A EP 3029216 A1 EP3029216 A1 EP 3029216A1
Authority
EP
European Patent Office
Prior art keywords
elements
interconnectors
scaffolding
reinforced
shows
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Withdrawn
Application number
EP14832072.4A
Other languages
German (de)
English (en)
Other versions
EP3029216A4 (fr
Inventor
Juan Alarcon Lorente
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.)
Zenit Polimeros Y Composites Sl
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3029216A1 publication Critical patent/EP3029216A1/fr
Publication of EP3029216A4 publication Critical patent/EP3029216A4/fr
Withdrawn legal-status Critical Current

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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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/22—Stiff scaffolding clamps for connecting scaffold members of common shape for scaffold members in end-to-side relation
    • 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
    • E04G5/08—Scaffold boards or planks
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
    • E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
    • E04G7/308—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect without tying means for connecting the bars or members
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/34—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using positive engagement, e.g. hooks or pins

Definitions

  • the present invention relates to a scaffolding system, i.e. a system of parts used for the creation of scaffoldings.
  • the scaffolding systems currently known are made from carbon steel.
  • the supporting elements (beam and post elements) are formed by a tubular profile that comprises, generally welded, the interconnection elements or interconnectors.
  • the most typical interconnection element consists of a circular flange with transverse holes.
  • the French patent document FR2229015 of 1974 discloses a scaffolding and protective barrier creation system based on beam and post elements formed by a tubular profile made from PVC (polyvinyl chloride), PP (polypropylene), PA (polyamide), PC (polycarbonate), ABS (acrylonitrile butadiene styrene) or polyethylene (PE) which has four slotted fins that run along the entire length of the profile.
  • PVC polyvinyl chloride
  • PP polypropylene
  • PA polyamide
  • PC polycarbonate
  • ABS acrylonitrile butadiene styrene
  • PE polyethylene
  • the patent document PCT WO95/16838 discloses a scaffolding system in which the beam and post elements consist of cylindrical elements (tubes) made from reinforced thermoplastics. More specifically, the tubes comprise an inner layer of fibreglass-reinforced polymer, a layer of polymer fibre-reinforced thermoplastic surrounding the inner layer, and an additional coating treatment.
  • the interconnecting elements are components that surround the beam or post elements, attached to the same with adhesive, and comprise two circular flanges with a plurality of holes. The system appears to be expensive to manufacture and does not offer the same mechanical performance.
  • An aim of the present invention is to disclose an innovative scaffolding solution that uses new and lighter materials with mechanical properties similar to those of scaffolding systems whose main skeleton is formed by beam and post elements made from carbon steel, in such a way that the new system can be a commercial alternative to such systems.
  • the present invention discloses a scaffolding system of the type that comprises beam and post elements, joined together by means of interconnectors, that form the main skeleton of the scaffolding, in which the beam and post elements are made from a composite material, preferably of flat-faced transverse cross-section, and more preferably of square cross-section, and the interconnectors are made from a reinforced thermoplastic polymer.
  • the interconnectors are attached to the post elements by riveting or screwing. Attachment by riveting is preferable. These types of attachment avoid the mechanical weakness that can occur with the adhesive attachments known in the prior art. They also offer the advantage that the attachment cannot be dismantled.
  • the polygonal shape of the post and beam elements cooperates synergistically with the riveted or screwed joint by offering flat surfaces on which to create the attachment.
  • the preferred composite materials of the present invention are those made from a metal, polymer or ceramic base to which other reinforcing material is added.
  • the beam and post elements will be made from composite materials whose mechanical properties, particularly Young's modulus, elastic modulus and toughness, are close within a reasonable range to the properties of 4% carbon steel, as hitherto used in conventional scaffolding systems, thus maximising the effort to reduce the density of the new material.
  • Especially preferred composite materials are mineral-reinforced polyester resin and fibreglass-reinforced epoxy resin.
  • the aim of the profiles thus obtained is to strengthen the mechanical properties of the final component as far as possible.
  • the geometry of its transverse cross-section makes it possible to optimise the said properties, which must be capable of withstanding axial, traction and compression stresses over component distances of several metres.
  • the interconnecting components which we will call rosettes and joints, are made from a mineral-reinforced thermoplastic polymer such as fibreglass-reinforced polypropylene.
  • the geometry of the joints will be such that the said joints can grip and house the different structural profiles (principally beam and post elements). This feature presupposes a mechanical attachment between the structural profile and the joint that also makes it possible, by means of riveting and/or other attachment systems, to prevent any movement of one component with respect to the other.
  • the housings for the profiles make it possible to use pressure attachment systems. They also allow attachment by chemical means (adhesive) if desired.
  • the system will comprise elongated elements of square profile as beam elements (horizontal structural elements that form the skeleton), post elements (vertical structural elements that form the skeleton) and diagonal elements (elements on the diagonal between beam and/or post elements).
  • the system will also comprise elongated elements made from a composite material with a U-shaped profile for beam and other horizontal load-bearing elements, profiles with a double-U profile for horizontal load-bearing elements, and platform profiles which may be made from square or U-shaped profiles joined by a flat horizontal element, thus forming the gangplank or platform.
  • a preferred embodiment of the present invention is based on the use of suitably selected materials and a determined structure, in which materials of greater directional working capacity are chosen for the beam and post elements, while for the interconnecting elements a different material is chosen that has greater flexibility and that, principally, allows flexibility in the design of the form of the interconnectors.
  • the node is formed by a rosette or joint -2- of prismatic form and square cross-section that grips the post element -1- by its exterior, being capable of sliding along the same, and that has a square flange -22- with a plurality of holes -221-.
  • a rosette or joint -2- of prismatic form and square cross-section that grips the post element -1- by its exterior, being capable of sliding along the same, and that has a square flange -22- with a plurality of holes -221-.
  • to the flange -22- is connected another interconnector or joint -3- situated at the end of the beam element -1'-.
  • the connection is secured by a pin -31- that passes through corresponding holes in the joint -3- and the flange -22-.
  • the rosette -2- and the joint -3- shown in the example are made from a reinforced thermoplastic material, in particular fibreglass-reinforced polypropylene. In the case shown, the
  • Both the post element -1- and the beam element -1'- are formed in the example by a profile -19- of square cross-section made from a mineral-reinforced polyester resin or fibreglass-reinforced epoxy resin, as seen in Figure 2 .
  • Figure 3 shows a beam element -1'- with two connectors or joints -3- at its ends, intended to be attached horizontally to a rosette -2-.
  • these joints -3- have a horizontal slot -33- for receiving the flange of the rosette and a through hole -32- traversing the said slot, for receiving the pin -31- for connecting to the rosette -2-.
  • the joint -3- has a groove arrangement -34- for receiving the profile -1'- that forms the beam element.
  • Figure 6 shows a production variant of the profile -1'- with a rabbet at the end -11- in the area intended to receive the joint -3-.
  • a constant transverse cross-section is achieved along the joint and profile, since the rabbet is occupied by the joint.
  • Figure 7 shows a diagonal structural element formed by a profile -1'-, which may be the same as the element that forms the beam element, and two diagonal joints -5- that have an articulation -54- and an articulated area -52- with a hole -53-for connecting to a rosette -2-.
  • a oblique angle is formed between the profile -1'- and the flange -22- of the rosette -2-.
  • Figure 8 shows exclusively the diagonal joint -5-.
  • the connecting area of the diagonal joint -5- also has a rectangular groove arrangement -59- for receiving the square profile -1'-.
  • Figure 9 shows a U-shaped profile -4-, also made from the composite materials indicated for the square profiles -1-, -1'-, which can be used for creating the aforesaid horizontal load-bearing elements.
  • the profile has a transverse cross-section -41- with right angles, and also through holes -42- to lighten its weight.
  • Figure 10 shows a joint -3'- suitable for the U-shaped profile -4-.
  • the joint is similar to that shown in Figure 5 , with the same or similar elements marked with the same numbers.
  • the rear groove arrangement -34'- for receiving the profile is U-shaped.
  • Figure 11 shows a horizontal load-bearing element formed by the U-shaped profile -4- and two joints -3'- situated at its ends.
  • Figure 12 also shows a double U-shaped profile for creating horizontal load-bearing elements. This is formed by two U-shaped profiles -4-, -4'- arranged one above the other and joined by a plate -44-.
  • the attachment between components may be made, for example, by means of adhesive.
  • Figure 13 shows a horizontal scaffolding gangway formed by two U-shaped profiles -4-, -4'- like those mentioned previously, arranged horizontally with respect to each other, joined on their upper edges by a horizontal sheet -45-, which in turn is covered by a non-slip sheet -46-.
  • scaffoldings can be created in different configurations that are lighter than the carbon steel scaffoldings currently existing on the market and equally functional.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Ladders (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP14832072.4A 2013-08-01 2014-07-25 Système d'échafaudage Withdrawn EP3029216A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201300716A ES2431243B1 (es) 2013-08-01 2013-08-01 Sistema de andamiaje
PCT/ES2014/070605 WO2015015031A1 (fr) 2013-08-01 2014-07-25 Système d'échafaudage

Publications (2)

Publication Number Publication Date
EP3029216A1 true EP3029216A1 (fr) 2016-06-08
EP3029216A4 EP3029216A4 (fr) 2017-01-04

Family

ID=49547452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14832072.4A Withdrawn EP3029216A4 (fr) 2013-08-01 2014-07-25 Système d'échafaudage

Country Status (3)

Country Link
EP (1) EP3029216A4 (fr)
ES (1) ES2431243B1 (fr)
WO (1) WO2015015031A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670786A1 (fr) * 2018-12-20 2020-06-24 Kingsmead Developments (SW) Limited Système de couplage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104372918A (zh) * 2014-10-30 2015-02-25 无锡市安捷脚手架有限公司 一种香蕉式脚手架

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229015A1 (en) 1973-05-07 1974-12-06 Baudesson Pierre Plastic bar for scaffolding or safety barrier - has connecting plugs extending into hollow ribbed interior
AU6974181A (en) * 1980-04-22 1981-10-29 Penkeyman, H. "t" joint for connecting tubes etc
US4715474A (en) * 1986-07-14 1987-12-29 Wehmeyer Donald T Scaffold system
CA2111724A1 (fr) * 1993-12-17 1995-06-18 Raymond Wayne Gillard Systeme de raccords d'echafaud
JPH10205507A (ja) * 1997-01-17 1998-08-04 Ube Nitto Kasei Co Ltd 繊維強化合成樹脂製管体のジョイント構造
KR20010031805A (ko) * 1997-11-07 2001-04-16 추후제출 섬유 보강재 복합 중공 구조체 및 그 제조 방법과 장치
JP2001227514A (ja) * 1999-12-07 2001-08-24 Ube Nitto Kasei Co Ltd 繊維強化樹脂製パイプの接合方法
AU2002227821A1 (en) * 2001-01-16 2002-07-30 Michael P. Sakno Firestop coupling for penetration of building separations
CA2577426A1 (fr) * 2007-02-02 2008-08-02 Bernard Cote Tube et systeme connecteur et cadres tubulaires utilisant ces derniers
CN102585354A (zh) * 2011-01-18 2012-07-18 合肥杰事杰新材料股份有限公司 一种阻燃增强聚烯烃材料及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670786A1 (fr) * 2018-12-20 2020-06-24 Kingsmead Developments (SW) Limited Système de couplage

Also Published As

Publication number Publication date
ES2431243B1 (es) 2014-06-03
EP3029216A4 (fr) 2017-01-04
ES2431243A1 (es) 2013-11-25
WO2015015031A1 (fr) 2015-02-05

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