WO2014095882A1 - Système de profilé d'échafaudage à auto-verrouillage - Google Patents

Système de profilé d'échafaudage à auto-verrouillage Download PDF

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Publication number
WO2014095882A1
WO2014095882A1 PCT/EP2013/076928 EP2013076928W WO2014095882A1 WO 2014095882 A1 WO2014095882 A1 WO 2014095882A1 EP 2013076928 W EP2013076928 W EP 2013076928W WO 2014095882 A1 WO2014095882 A1 WO 2014095882A1
Authority
WO
WIPO (PCT)
Prior art keywords
construction element
scaffold
locking
outer edge
receiving surface
Prior art date
Application number
PCT/EP2013/076928
Other languages
English (en)
Inventor
Lars Carlbom
Johan Lindberg
Original Assignee
Mon.Zon Development Ab
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 Mon.Zon Development Ab filed Critical Mon.Zon Development Ab
Publication of WO2014095882A1 publication Critical patent/WO2014095882A1/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
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/154—Non-detachably fixed and secured connections between platform and scaffold
    • 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
    • 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
    • E04G7/24—Couplings involving arrangements covered by more than one of the subgroups E04G7/08, E04G7/12, E04G7/20, E04G7/22
    • 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
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G2001/155—Platforms with an access hatch for getting through from one level to another

Definitions

  • the present invention relates to an end piece for a scaffold profile system, a scaffold profile system comprising such an end piece, a beam for a scaffold profile system, a connector for a scaffold profile system, and an auto-locking scaffold profile system comprising said end piece, said beam and said connector.
  • the present invention also relates to a scaffold platform comprising such a scaffold profile system.
  • Platform units are frequently used in the sector of scaffolding, staircases, podia, stages, or similar support constructions.
  • the platform units are usually laid onto horizontal carriers, particularly cross-bars, preferably transverse cross-bars, for example scaffold pipes, conventionally being round pipes or U-shaped profiles.
  • the platform units comprise hook elements arranged over the bars or positioned inside the U-shaped profile, as described for instance in EP 0 736 647 and US 2010/0326771 .
  • the platform units must be secured against vertical as well as horizontal displacement, since unintentional displacement of the platform, particularly caused by wind forces, can lead to severe accidents and injuries.
  • securing elements Conventionally, manually activated securing elements are used. Such elements can be pivoted about a pivot axis that is vertical in the usage position of the platform unit, from an open position, in which the platform unit can be displaced, into a displacement protection position, in which the securing elements engage underneath the horizontal carriers or scaffold pipes.
  • Such a construction has become known, for example, from DE 198 38 625 A1 .
  • DE 198 38 625 a securing lever is rotated between a locked and an unlocked position over a scaffold pipe.
  • the disadvantage of such securing elements is that it may be cumbersome and time- consuming to manually rotate all the securing elements present, particularly when the platform is large. Another disadvantage is that the securing elements may be
  • a scaffold board comprises an end piece having a tongue at one end, and an end piece having a groove at the other end.
  • the tongue and groove are inclined at an angle of 45° and engage with each other, whereby favorable conditions with respect to the power distribution are created.
  • a fastening means 34 is used (Fig. 5).
  • the present invention described below eliminates disadvantages of the prior art, and provides an auto-locking scaffold profile system that is easy to assemble, that does not require separate locking means and that is very flexible and may be erected in a large variety of environments.
  • a beam for a scaffold platform has a longitudinal direction y and a transverse direction x, a top portion and a bottom portion, and side walls positioned between the top portion and the bottom portion.
  • An inclined receiving surface extending along the entire longitudinal extension of the beam is arranged at the top portion of the beam and has an outer edge and an inner edge.
  • the outer edge of the receiving surface is elevated in relation to the inner edge of the receiving surface, such that an angle ⁇ is defined between a straight line between the outer edge and the inner edge and a plane defined by the longitudinal direction y and the transverse direction x of the beam, hereafter referred to as x-y plane, wherein the angle ⁇ is from 10 to 80°, preferably from 30 to 70°, more preferably from 40 to 60 °.
  • the outer edge of the receiving surface may extend along a side wall, and the inner edge of the receiving surface may extend along the longitudinal centre line through the beam. Further, the inner edge of the receiving surface may extend along a side wall, and the outer edge of the receiving surface may be positioned at a distance from the side wall, wherein the distance extends in the transverse direction x of the beam. The outer edge of the receiving surface extends in a direction parallel with the inner edge of the receiving surface.
  • a vertical protrusion element may be arranged at the outer edge of the receiving surface of the beam.
  • a protrusion element prevents displacement of a scaffold platform being engaged with the beam due to shearing forces that may be applied to the scaffold platform by external factors, such as wind.
  • the vertical protrusion element does not form a part of the inclined receiving surface.
  • the beam may comprise two inclined receiving surfaces one on each side of a
  • the beam of the present invention may thus have a substantially V-shaped inclined receiving surface when the outer edges of the receiving surfaces at both of the side walls are elevated as described above.
  • At least one of the side walls may comprise a locking channel running in the longitudinal direction y of the beam.
  • the locking channel is arranged to accommodate a locking means as described in detail below.
  • the cross-section of the locking channel may be substantially triangular, semi-circular, rectangular, or any other shape suitable for accommodating the locking means.
  • the receiving surface may comprise a longitudinal support element extending
  • the purpose of the support element is to provide additional stability to the beam, and also to fill any gaps that may be present between two adjacent constructions elements as described below.
  • the beam according to the present invention is preferably arranged to be connected to a scaffold structure, particularly to vertical standards of a scaffold structure.
  • the beam may be a substantially hollow profile, having substantially circular, rectangular, triangular, or any other cross-section such that a connecting means, e.g. a locking head, may be arranged inside the beam.
  • the beam may be made of any suitable material, such as steel or aluminium.
  • the beam is made by extrusion.
  • a construction element for engaging with a beam as described above is provided.
  • the construction element has a longitudinal direction y and a transverse direction x, an upper portion and a lower portion, an outer edge portion and an inner edge portion.
  • the outer edge portion and the inner edge portion extend in the longitudinal direction y of the construction element and are positioned at a distance from each other, wherein the distance extends in the transverse direction x of the construction element.
  • the construction element comprises an engagement member extending in the longitudinal direction y.
  • the engagement member has an upper surface, a lower surface, an inner side wall and an outer side wall.
  • the inner side wall of the engagement member is joined to the outer edge portion of the construction element. Further, the lower surface of the engagement member is arranged to be in contact with the receiving surface of the beam.
  • One of the advantages of forming the construction element and the beam such that the angles a and ⁇ are in the range stated above is that a scaffold profile system provided with such a construction element and such a beam becomes very stable, eliminating the risk of displacement caused by rotation in an x-y plane.
  • the engagement member of the construction element is pressed towards the receiving surface of the beam, and thus stays in the desired position rather than being displaced.
  • the construction element may be provided with a locking means provided to ensure automatic locking of the construction element in its desired position, thus eliminating the need for both a separate locking means and an additional assembly step.
  • the engagement member of the construction element may be an integrated part of the construction element, or it may be a separate item joined to the construction element by welding, gluing, or the like.
  • the construction element may be made of any suitable material, such as steel, aluminium, plastic, composite material, carbon fibre or the like.
  • the locking means is positioned in a central part of the lower portion of the construction element. It is also possible to position the locking means in any other part of the lower portion of the construction element. Further, several locking means may be provided along the lower portion of the construction element.
  • the locking means may be formed as a hollow body, such as an elongated tube having circular, oval, square, rectangular, pentagonal, or any other appropriate cross-section.
  • the hollow body of the locking device is attached to the inner edge portion of the construction element.
  • the hollow body of the locking means may be provided with at least one groove, in which a portion of a locking device may be accommodated. Also, several grooves having the same or different dimensions may be provided.
  • the locking device may for instance be an elongated locking pin having a bent portion in one end and a bevelled portion in the other end.
  • the bent portion of the locking pin may then be arranged inside the groove at the free end of the hollow body, while the bevelled portion may protrude through an aperture in the lower portion of the construction element.
  • the locking means may comprise a spring arrangement. If such a spring arrangement is present, it may be arranged inside the hollow body and it may be coiled around the locking device.
  • the locking means may also be a retractable spring-loaded ball or a knob made of a resilient material arranged at the outer edge portion of the construction element. Further, the locking means may be a flexible flange of The locking action of the locking means will be described in greater detail later.
  • the construction element of the present invention may be used as an end piece for a scaffold board or as a connector for connecting a plurality of beams in a crossed relationship.
  • the construction element When the construction element is used as an end piece, it may be provided with at least one longitudinal groove arranged in the outer side wall of said engagement member.
  • the groove is arranged to accommodate a user's fingers when the user grips the end piece during assembly.
  • the groove may be rectangular, oval, bean-shaped, circular or any other shape suitable for gripping. Also, it is conceivable to provide the outer side wall of the engagement member with more than one groove.
  • an end piece When the construction element is used as an end piece for a scaffold board, it is adapted to be fastened to a scaffold board.
  • an end piece according to the present invention may comprise apertures for receiving of fastening means, such as a bolt and nut, or a rivet.
  • the end piece may have an engagement member comprising a ribbed lower surface, providing a better contact of the lower surface of the engagement member with the receiving surface of the beam. If any dirt is present at either the lower surface of the engagement member or the receiving surface of the beam, the positioning of the end piece on the beam may become somewhat unsteady. The rubbing motion of the end piece against the receiving surface of the beam would force the dirt to move towards the grooves formed due to the ribs at the lower surface of the engagement member, thus ameliorating the contact between the end piece and the beam.
  • the lower surface of the engagement member may have a broken profile.
  • broken profile is meant that the outline of the lower surface of the engagement member is not a straight line.
  • the broken profile may be a combination of at least two straight portions having different inclination, or a combination of at least one straight portion and at least one curved portion.
  • the angle a is measured between the point of the lower surface being adjacent to the outer side wall of the engagement member, and the outer edge portion of the end piece.
  • the engagement member may be continuous extending along the entire outer edge portion of the construction element.
  • the engagement member may also be discrete, i.e. be formed as a plurality of spaced apart sections arranged along the entire outer edge portion of the construction element.
  • the engagement member may extend along a part of the outer edge portion of the construction element, i.e. be shorter that the construction element.
  • a scaffold board with an end piece attached to each of the short ends of the scaffold board is positioned between the beams such that the lower surface of the engagement member is resting against the receiving surface of the beam.
  • the scaffold profile system is provided with additional stability compared to the systems of the prior art. Since the engagement member of the end piece rests on the inclined receiving surface of the beam, displacement of the scaffold board in the horizontal plane in the transverse direction of the end piece is virtually eliminated.
  • a locking means may be provided as disclosed above.
  • the locking means is a hollow body with a locking pin and a spring arranged inside the hollow body, the locking means functions in the following way.
  • the bevelled portion of the locking pin which protrudes through the opening in the end piece and out from the outer edge portion of the end piece will be positioned just above the outer edge of the receiving surface of the beam.
  • the bevelled portion of the locking pin will be brought in contact with the outer edge of the receiving surface of the beam.
  • the bevelled portion will by action of the spring be pushed inward towards the outer edge portion of the end piece such that it eventually is pushed into the end piece and becomes aligned with the outer edge portion of the end piece.
  • the lower surface of the engagement member is brought in contact with the receiving surface of the beam, while the bevelled portion of the locking pin is released, and by action of the spring is projected out from the outer edge portion of the end piece and positioned inside the locking channel arranged in the side wall of the beam, thus providing a snap-in locking effect.
  • the locking pin will thus lock the scaffold board by the bevelled portion of the locking pin being inserted into the locking channel arranged in the side wall of the beam thus preventing vertical displacement of the scaffold board.
  • the scaffold board When the scaffold board is to be removed, the scaffold board is unlocked by pulling the bent portion of the locking pin thus retracting the bevelled portion of the locking pin until it is aligned with the outer edge portion of the end piece. The scaffold board may then be lifted from the beam and removed.
  • the locking means is a resilient member arranged at the outer edge portion of the construction element
  • the locking action is performed in a similar way as described above.
  • the locking means is deformed such that the outer edge portion of the engagement member may pass by the side wall of the beam such that the lower surface of the engagement member is in contact with the receiving surface of the beam, and such that the locking means is positioned inside the locking channel in the side wall of the beam.
  • the construction element described above may be a connector for scaffold beams. The connector is used when it is desirable to change the direction of the scaffold boards.
  • the outer edge portion of the connector may comprise a locking means, such as a spring- loaded retractable ball or a knob made of a resilient material.
  • the locking means of the connector is arranged to be positioned inside a longitudinal locking channel running in at least one of the side walls of the beam when the locking means is in the locked position.
  • the inner edge portion of the connector is arranged to be locked using for instance a conventional wedge-type lock arranged inside another beam.
  • the lower portion of the connector may comprise an aperture for accommodating the wedge when the connector is locked.
  • the upper portion of the connector may comprise an aperture or holder arranged to accommodate a vertical post for attaching for instance a safety rail.
  • the connector of the present invention may also comprise a discontinuous engagement member comprising two separate spaced apart sections. The advantage of having such a shape of the engagement member is that the connector is light and easy to handle.
  • a construction element in the form of an end piece being attached to a scaffold board, and a beam of the present invention may be a part of an auto-locking scaffold profile system.
  • Such a scaffold profile system affords the great advantages of not requiring an additional locking step, being stable and secure, and being very easy to assemble and disassemble.
  • the system may comprise a construction element in the form of a connector. Accordingly, it may in some instances be necessary to design a scaffold platform that surrounds the permanent constructional components, or that has a shape deviating from square or rectangular.
  • a rail post for a handrail may comprise an elongated flat bar having a longitudinal direction y and a transverse direction x, an upper portion and a lower portion.
  • At least one connecting element extending in a direction perpendicular to the longitudinal direction y of the elongated flat bar is arranged at the elongated flat bar such that the longitudinal central axis of the connector is parallel with the transverse direction x of the elongated flat bar.
  • the connecting element may be any suitable hollow or solid profile having circular, rectangular, square, oval, pentagonal or any other suitable cross-section.
  • the connecting element is arranged to be attached to a handrail bar, and may thus comprise at least one aperture for receiving a fastening means.
  • a hook element may be arranged, protruding diagonally downward in a direction opposite to the direction of the connecting elements.
  • the hook element is arranged to be positioned in a locking collar when the rail post is connected to a vertical standard of the scaffold platform.
  • a locking head may be arranged for attaching the upper portion of the rail to the vertical standard.
  • the inner edges of the locking head may be bevelled. Having such edges enables the locking head to be arranged on the locking collar arranged on the vertical standard by a sliding motion directed diagonally upward.
  • One possible way of attaching the rail post with the rail bars connected thereto to a vertical standard is inserting the hook element into a first locking collar arranged at the vertical standard, thus positioning the rail post in an inclined relationship to the vertical standard. Then, the rail post is rotated upwards around the inserted end of the rail post until the rail post becomes parallel with the vertical standard, such that the locking head at the upper portion of the rail post is brought in contact with a second locking collar arranged at the vertical standard.
  • the bevelled inner edges of the locking head enable the locking head to smoothly slide over the surface of the second locking collar until the rail post is positioned vertically and may be locked in the second locking collar by means of the locking head.
  • FIG. 1 A and 1 B illustrate a side view and a perspective view of a construction element in the form of an end piece, respectively;
  • Fig. 2A shows a side view of a scaffold board with an end piece attached to it
  • Figs. 2B and 2C show perspective views of a scaffold board with an end piece attached to it;
  • Fig. 2D depicts a locking pin;
  • Figs. 3A and 3C depict a cross-section of the beam according to the present invention
  • Figs. 3B and 3D depict a perspective view of the beam
  • Figs. 4, 4A and 4B depict the auto-locking mechanism of the construction element in the beam of the present invention
  • Figs. 5A and 5B show a side view and a perspective view of a construction element in the form of a connector, respectively;
  • Fig. 5C depicts another embodiment of the connector
  • Figs. 6A and 6B illustrate a side view and a perspective view of a vertical post, respectively;
  • Fig. 7 shows the scaffold platform comprising a beam, an end piece, a connector and a vertical post
  • Fig. 8 illustrates the use of the connector of the present invention
  • Fig. 9 depicts the scaffold platform according to the present invention
  • Fig. 10 shows a toe board arranged to be used with the scaffold platform of the present invention
  • Fig. 1 1 illustrates a rail post used for a double rail.
  • Figs. 1 A and 1 B depict an end piece 1 according to the present invention.
  • the end piece has a longitudinal direction y and a transverse direction x, an upper portion 2 and a lower portion 3.
  • the end piece 1 comprises an outer edge portion 4 and an inner edge portion 5, extending in the longitudinal direction y and positioned at a distance from each other.
  • the end piece further comprises a longitudinally extending engagement member 6 having an upper surface 7, a lower surface 8, an inner side wall 9 and an outer side wall 10.
  • the inner side wall 9 of the engagement member 6 is joined to the outer edge portion 4 of the end piece 1 .
  • the outer edge portion 4 of the end piece 1 and the lower surface 8 of the engagement member 6 of the engagement member 6 define an angle a being 60°.
  • the angle a may be from 10 to 80°, preferably from 30 to 70°, more preferably from 40 to 60°.
  • two apertures 15 are arranged in each of the vertical side walls of the end piece 1 for receiving a fastening means when the end piece is attached to a scaffold board.
  • a scaffold board 1 1 is shown with an end piece 1 according to the present invention.
  • the end piece 1 is attached to the scaffold board 1 1 using fastening means 18, particularly a bolt and a nut, fastened through the apertures 15.
  • a groove 16 is arranged in the outer side wall 10 of the engagement member 6 for accommodating the user's hand when the scaffold board 1 1 is handled by the user.
  • a locking means 12 is arranged at the inner edge portion 5 of the end piece 1 .
  • the locking means 12 comprise a hollow body with a locking pin 13 and a spring 14 arranged inside the hollow body.
  • the locking pin 13 is shown in greater detail in Fig. 2D, and is in the form of a straight thin rod having a bent portion 19 and a bevelled portion 20.
  • the bent portion 19 functions as a gripping element, while the bevelled portion 20 acts as a locking element, as will be described in further detail below.
  • the lower surface 8 of the engagement member 6 is provided with ribs 17. Gaps between two adjacent scaffold boards may be prevented by arranging a border 21 along the long sides of the scaffold board 1 1 . When two scaffold boards are positioned adjacent to each other, the adjacent borders 21 will form a continuous surface.
  • Figs. 3A-3D illustrate a beam 22 for receiving a scaffold board.
  • the beam 22 has a longitudinal direction y and a transverse direction x, a top end 23 and a bottom end 24, two side walls 25 positioned between the top end 23 and the bottom end 24, and a receiving surface 26 arranged at the top end 23.
  • the receiving surface 26 has an outer edge 27 and an inner edge 28 arranged such that the outer edge 27 of the receiving surface 26 is elevated in relation to the inner edge 28 of the receiving surface 26. In this way, angle ⁇ is defined between a straight line between the outer edge 27 and the inner edge 28 and an x-y plane of the beam. The angle ⁇ shown in Figs.
  • the beam 22 comprises a tubular profile arranged at the bottom end 24 of the beam 22.
  • the receiving surface 26 arranged at the top end 23 has a substantially V-shaped profile, since both of the outer edges 27 of the receiving surface 26 are elevated in relation to the inner edge 28 of the receiving surface 26.
  • a longitudinal locking channel 30 is arranged in each of said side walls 25.
  • the locking channels 30 will accommodate the bevelled portion 20 of the locking pin 13, in a manner described below.
  • a support element 29 is arranged at the inner edge 28 of the receiving surface 26 extending vertically upwards from the inner edge 28 of the receiving surface 26.
  • angle ⁇ 90°- ⁇
  • vertical protrusion elements 27' may be provided at the outer edges 27, as depicted in Figs. 3C and 3D.
  • the surface of the vertical protrusion elements 27' is not considered to be a part of the receiving surface 26.
  • angle ⁇ is defined between a straight line between the outer edge 27 and the inner edge 28 and an x-y plane of the beam.
  • the end piece 1 is attached to a scaffold board 1 1 using a fastening means 18 such as bolt and nut.
  • the scaffold board 1 1 with the end piece 1 being attached to it is then positioned on the beam 22 such that the lower surface 8 of the engagement member 6 of the end piece 1 is brought in contact with the receiving surface 26 of the beam 22.
  • the angle a defined between the lower surface 8 of the engagement member 6 and the outer edge portion 4 of said end piece 1 must be the same as the angle ⁇ defined between the support element 29 of the beam 22 and the receiving surface 26 of the beam 22.
  • the angle a is 60°, and the angle ⁇ is 30°. The equation above is thus satisfied.
  • the bevelled portion 20 protruding through the end piece 1 and out from the outer edge portion 4 of the end piece will be positioned just above the outer edge 27 of the receiving surface 26 of the beam 22, as shown in Fig. 4A.
  • the bevelled portion 20 will be brought in contact with the outer edge 27 of the receiving surface 26.
  • the bevelled portion 20 will by action of the spring 14 be pushed towards the outer edge portion 4 of the end piece 1 such that it eventually becomes aligned with the outer edge portion 4 of the end piece 1 .
  • the lower surface 8 of the engagement member 6 is brought in contact with the receiving surface 26 of the beam 22, while the bevelled portion 20 of the locking pin 13 is released, and by action of the spring 14 is projected out from the outer edge portion 4 of the end piece and positioned inside the locking channel 30 arranged in the side wall 25 of the beam 22.
  • the bevelled portion 20 will thus lock the scaffold board 1 1 preventing vertical displacement of the scaffold board 1 1 .
  • the major advantage of the auto-locking scaffold profile system is that the scaffold board 1 1 is locked automatically when it is positioned on the beam 22, thus eliminating both separate locking means and a complicated assembly step.
  • Fig. 4B depicts another embodiment of the cooperation of the scaffold board having the end piece of the present invention and the beam of the present invention, wherein the outer edges 27 of the beam 22 is provided with a vertical protrusion elements 27'.
  • the scaffold board 1 1 with the end piece 1 being attached to it is positioned on the beam 22 such that the lower surface 8 of the engagement member 6 of the end piece 1 is brought in contact with the receiving surface 26 of the beam 22.
  • the engagement member 6 is provided with a groove 8' for accommodation of the vertical protrusion elements 27'.
  • the embodiment illustrated in Fig. 4B provides a scaffold profile system having unsurpassed stability against external shearing forces.
  • the auto-locking scaffold profile system may comprise a connector 31 , depicted in Figs. 5A and 5B.
  • the connector 31 has a longitudinal direction y and a transverse direction x, an upper portion 33 and a lower portion 34, an outer edge portion 35 and an inner edge portion 36, and an inner side wall 73 and an outer side wall 74.
  • the outer edge portion 35 and the inner edge portion 36 extend in the longitudinal direction y of the connector 31 and positioned at a distance from each other, wherein the distance extends in the transverse direction x.
  • the connector 31 comprises an engagement member 32 extending in the longitudinal direction y of the connector 31 and having an upper surface 37 and a lower surface 38.
  • the outer edge portion 35 of the connector 31 and the lower surface 38 of the engagement member 32 define an angle a being 60°.
  • the angle a may be from 10 to 80°, preferably from 30 to 70°, more preferably from 40 to 60°.
  • the inner edge portion 36 of said connector 31 is shaped such that it has a protruding portion 41 arranged at the lower portion 34 of the connector 31 .
  • the lower portion 34 comprises an aperture 39, which in the embodiment shown in Fig. 5B is substantially rectangular.
  • the protruding portion 41 and the aperture 39 are used when the connector 31 is fastened to the rest of the auto-locking scaffold platform system as shown in Figs. 7 and 8.
  • the engagement member 32 comprises an aperture 40, arranged for receiving a vertical post 42 which may be used for attaching a safety rail.
  • the angle a defined between the lower surface 38 of the engagement member 32 and the outer edge portion 35 of the connector 31 must be the same as the angle ⁇ defined between the support element 29 of the beam 22 and the outer edge 27 of the receiving surface 26 of the beam 22.
  • the outer edge portion 35 comprises a bevelled element 43 protruding from the outer edge portion 35 and functioning as a locking means.
  • FIG. 5C Another embodiment of the connector according to the present invention is depicted in Fig. 5C, wherein the connector 31 has a discrete engagement member 32.
  • the engagement member 32 comprises two separate and spaced apart portions.
  • a vertical post 42 shown in Figs. 6A and 6B.
  • the vertical post 42 has a base 45 having a lower surface 49 and an upper surface 50.
  • a locking item 72 is arranged at the lower surface 49 .
  • the locking item 72 is in the form of cylindrical pin having a tongue 44.
  • the tongue 44 is arranged to be positioned inside the aperture 40 of the connector 31 .
  • the vertical post 42 is then locked in its desired position by rotating the post, such that the tongue 44 becomes locked in the aperture 40.
  • a first tubular member 47 is arranged at the upper surface 50 .
  • the first tubular member 47 is arranged for receiving a vertical standard for attachment of a safety rail.
  • An aperture 48 is arranged at the first tubular member 47 for receiving a fastening means (not shown) when a vertical standard is attached to the vertical post 42.
  • a second tubular member 46 having a larger diameter compared to the first tubular member 47 is arranged at the upper surface 50.
  • the second tubular member 46 acts as a distance between the vertical standard and the base 45.
  • FIG. 7 illustrates an assembled auto-locking scaffold profile system according to the present invention.
  • a scaffold board 1 1 with an end piece 1 attached to it is positioned at the beam 22 and automatically locked in its desired position by means of the locking pin 13 (not shown) in a manner described above.
  • the connector 31 is locked to the beam 22 using a locking head 71 .
  • the vertical post 42 is to be arranged at the connector 31 .
  • Fig. 8 illustrates the way the connector 31 is used for joining two beams 22 in a T- arrangement.
  • the engagement member 32 of the connector 31 is resting against the receiving surface 26, while the locking member 43 is positioned inside the locking channel 30.
  • the protruding portion 41 arranged at the lower portion 34 of the connector 31 is inserted in to the locking head 51 and locked by means of a wedge 52.
  • a scaffold platform 56 in its final assembled state is shown.
  • the scaffold platform 56 comprises vertical standards 54 with a beam 22 arranged between each two standards. Scaffold boards 1 1 with an end piece 1 fastened to each of the short ends of the scaffold boards 1 1 are attached to the beams 22 in the manner described above.
  • scaffold boards of three different lengths have been used.
  • a connector 31 is arranged at each cross point 57 .
  • the scaffold platform 56 depicted in Fig. 9 further comprises a double rail 53 connected by means of a rail post 60, and a toe board 55. As may be understood from Fig.
  • the scaffold platform according to the present invention is flexible and easy to assemble.
  • the scaffold platform may comprise a large variety of scaffold boards having different sizes and positioned in different directions, and may be used in almost any environment both outdoors and indoors.
  • Fig. 10 illustrates a toe board 55 that may be used in the scaffold platform according to the present invention.
  • the toe board is in the form of a folded sheet of suitable material, such as metal, carbon fiber, plastic or the like.
  • the short ends of the toe board comprise semi-circular carvings 61 providing a close fit of the toe board 55 and the vertical standards 54 to which it is attached.
  • Fig. 1 1 depicts a rail post 60 arranged to be connected to vertical standards 54.
  • the rail post 60 comprises an elongated flat bar 62 having a longitudinal direction y and a transverse direction x, an upper portion 67 and a lower portion 66 and made of any suitable material, such as steel, aluminium, carbon fibre and the like.
  • a tubular connecting element 63 is arranged at each of the upper and the lower portions.
  • the tubular connecting element is positioned such that the longitudinal central axis of the tubular connector is parallel with the transverse direction x of the elongated flat bar 62.
  • Each of the tubular connecting elements 63 comprise apertures 68 for receiving a fastening means when the rail post is connected to the rail bars 71 .
  • a hook element 65 is arranged, protruding diagonally downward in the opposite direction from the direction of the tubular connecting elements 63.
  • the hook element 65 is arranged to be positioned in a locking collar when the rail post 60 is connected to a vertical standard 54.
  • a locking head 64 is arranged for attaching the upper portion 67 of the rail post 60 to the vertical standard 54.
  • the inner edges 69 of the locking head 64 are bevelled. Having such edges enables the locking head to be arranged on the locking collar arranged on the vertical standard 54 by a diagonally upward motion.
  • the hook element 65 is inserted into a first locking collar 70, thus positioning the rail post in an inclined relationship with the vertical standard 54. Then, the rail post 60 is rotated upwards around the inserted end of the rail post 60 until the rail post 60 becomes parallel with the vertical standard 54, such that the locking head 64 is brought in contact with a second locking collar 70'.
  • the bevelled inner edges 69 enables the locking head 64 to smoothly pass over the surface of the second locking collar 70' until the rail post 60 is positioned vertically and may be locked in the second locking collar 70' by means of the locking head 64.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

La présente invention concerne une poutre (22) pour une plateforme d'échafaudage, la poutre (22) possédant une direction longitudinale (y) et une direction transversale (x), une partie supérieure (23) et une partie inférieure (24), des parois latérales (25) positionnées entre la partie supérieure (23) et la partie inférieure (24). La poutre comprend en outre une surface de réception inclinée (26) qui s'étend le long de l'extension longitudinale entière de la poutre et qui est agencée au niveau de la partie supérieure (23), la surface de réception (26) comportant un bord extérieur (27) et un bord intérieur (28). Le bord extérieur (27) de la surface de réception (26) est élevé par rapport au bord intérieur (28) de la surface de réception (26), un angle (β) étant défini entre une ligne droite entre le bord extérieur (27) et le bord intérieur (28) et un plan défini par la direction longitudinale (y) et la direction transversale (x) de la poutre. L'angle (β) est de 10 à 80°, de préférence de 30 à 70°, idéalement de 40 à 60°.
PCT/EP2013/076928 2012-12-20 2013-12-17 Système de profilé d'échafaudage à auto-verrouillage WO2014095882A1 (fr)

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SE1251477-4 2012-12-20
SE1251477 2012-12-20

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WO2014095882A1 true WO2014095882A1 (fr) 2014-06-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017174050A1 (fr) * 2016-04-07 2017-10-12 Wilhelm Layher Verwaltungs-Gmbh Traverse de départ pour zone de montée munie d'une échelle d'un système d'échafaudage, système d'échafaudage équipé de telles traverses de départ et procédé de montage d'un système d'échafaudage
EP4030018A1 (fr) * 2021-01-15 2022-07-20 RUX GmbH Dispositif de fixation des barres de verrouillage sur les échafaudages
FR3130304A3 (fr) * 2021-12-15 2023-06-16 Edac Plateau d’échafaudage comprenant un dispositif anti-soulèvement, structure d’échafaudage et procédé de montage correspondant

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU503902B2 (en) * 1975-03-14 1979-09-27 Comalco Prod Scaffold plank
DE3441774C1 (de) 1984-11-15 1986-01-09 Fried. Krupp Gmbh, 4300 Essen Kupplung für Gerüstbohlen
EP0736647A1 (fr) 1995-04-01 1996-10-09 Langer geb. Layher, Ruth Plate-forme d'echafaudage
DE19633091A1 (de) * 1996-08-16 1998-02-19 Peri Gmbh Zerlegbares Fassadengerüst, Bodenplatte für ein zerlegbares Fassadengerüst und Verfahren zum Demontieren und Montieren einer Bodenplatte eines zerlegbaren Fassadengerüstes
DE19838625A1 (de) 1998-08-26 2000-03-02 Plettac Ag Abhebesicherung für Gerüstböden
EP1857610A1 (fr) * 2006-05-18 2007-11-21 SAFE b.v. Connexion traverse/plancher pour systèmes d'echafaudage
US20100326771A1 (en) 2008-03-19 2010-12-30 Wilhelm Layher Verwaltungs-Gmbh Platform unit having lift-off protection and method for securing a platform unit against lift-off and method for releasing a platform unit secured against lift-off
DE102011007431A1 (de) * 2011-04-14 2012-10-18 Hofin Gmbh Plattenartiges Lastaufnahmeelement für Betonierungsschalungen oder für Gerüste im Bauwesen, sowie Verfahren zum Herstellen dieses Lastaufnahmeelements

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU503902B2 (en) * 1975-03-14 1979-09-27 Comalco Prod Scaffold plank
DE3441774C1 (de) 1984-11-15 1986-01-09 Fried. Krupp Gmbh, 4300 Essen Kupplung für Gerüstbohlen
EP0736647A1 (fr) 1995-04-01 1996-10-09 Langer geb. Layher, Ruth Plate-forme d'echafaudage
DE19633091A1 (de) * 1996-08-16 1998-02-19 Peri Gmbh Zerlegbares Fassadengerüst, Bodenplatte für ein zerlegbares Fassadengerüst und Verfahren zum Demontieren und Montieren einer Bodenplatte eines zerlegbaren Fassadengerüstes
DE19838625A1 (de) 1998-08-26 2000-03-02 Plettac Ag Abhebesicherung für Gerüstböden
EP1857610A1 (fr) * 2006-05-18 2007-11-21 SAFE b.v. Connexion traverse/plancher pour systèmes d'echafaudage
US20100326771A1 (en) 2008-03-19 2010-12-30 Wilhelm Layher Verwaltungs-Gmbh Platform unit having lift-off protection and method for securing a platform unit against lift-off and method for releasing a platform unit secured against lift-off
DE102011007431A1 (de) * 2011-04-14 2012-10-18 Hofin Gmbh Plattenartiges Lastaufnahmeelement für Betonierungsschalungen oder für Gerüste im Bauwesen, sowie Verfahren zum Herstellen dieses Lastaufnahmeelements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017174050A1 (fr) * 2016-04-07 2017-10-12 Wilhelm Layher Verwaltungs-Gmbh Traverse de départ pour zone de montée munie d'une échelle d'un système d'échafaudage, système d'échafaudage équipé de telles traverses de départ et procédé de montage d'un système d'échafaudage
EP4030018A1 (fr) * 2021-01-15 2022-07-20 RUX GmbH Dispositif de fixation des barres de verrouillage sur les échafaudages
FR3130304A3 (fr) * 2021-12-15 2023-06-16 Edac Plateau d’échafaudage comprenant un dispositif anti-soulèvement, structure d’échafaudage et procédé de montage correspondant

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