EP2697452B1 - Élément de plancher en forme de plaque pour des échafaudages - Google Patents

Élément de plancher en forme de plaque pour des échafaudages Download PDF

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Publication number
EP2697452B1
EP2697452B1 EP12713192.8A EP12713192A EP2697452B1 EP 2697452 B1 EP2697452 B1 EP 2697452B1 EP 12713192 A EP12713192 A EP 12713192A EP 2697452 B1 EP2697452 B1 EP 2697452B1
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EP
European Patent Office
Prior art keywords
main body
receiving element
load
load receiving
wall
Prior art date
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EP12713192.8A
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German (de)
English (en)
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EP2697452A1 (fr
Inventor
Niels Hollmann
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Polytech GmbH
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Polytech GmbH
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Publication of EP2697452A1 publication Critical patent/EP2697452A1/fr
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    • 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
    • E04G1/153—Platforms made of plastics, with or without reinforcement
    • 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

Definitions

  • the invention relates to a plate-like, substantially rectangular load-bearing element, which is suitable for being a component of a scaffold as a floor covering element.
  • Scaffolding is widely used in construction.
  • a particularly typical example of application is a scaffolding that is set up on the outside of a building wall, which allows people to stand on the scaffold at certain levels and from there to work, for example, on the scaffold. B. perform work from the outside on the building wall or on the windows of the building.
  • Another example is a tower-like framework, which is built inside a nave to perform work from the inside to the church ceiling can.
  • Yet another example is a scaffold, which is used for the manufacture of a building, z. B. to support by the framework above a formwork for concreting a bridge arch.
  • Nearly all scaffolds require the ability for people to stand in certain areas of the scaffolding and move on walking. For this purpose, one has plate-like walking surface elements, which can be placed on support of the framework.
  • the prior art further includes walking surface elements made of metal, which consist essentially of a metal plate on the useful side, stiffeners along the longitudinal edges, and a design on the transverse edges such that the Gehbelagelement can be placed at both transverse ends in each case on a support carrier of the framework ,
  • Metal floor covering elements are expensive to produce and have a high weight per unit area of foot covering element area, typically more than 25 kp / m 2 .
  • the invention has for its object to provide a plate-like load-receiving element available, which is less expensive to manufacture and per unit area significantly easier to make available.
  • a gantry walking member having the above features (a) and (b) is made US 2007/289813 A1 known.
  • WO 96/23116 A1 Scaffolding Chabelagelement is known, which is composed of a rectangular frame of aluminum profiles and an inserted wooden plank.
  • Two massive iron bars are each arranged in a longitudinal channel of a longitudinal aluminum profile and each lead at its two ends through the two head pieces. There is a nut screwed on each.
  • the load-bearing element according to the invention has three main components, namely a main body, a first head piece and a second head piece.
  • the main body is made of plastic in a two-walled configuration. Because of this structure, the load-bearing element according to the invention is much lighter per unit area than the known walking pad elements mentioned above; Weights of less than 15 kp / m 2 load bearing element surface are achievable, with targeted efforts for lightweight construction even under 13 kp / m 2 .
  • the low weight has very significant benefits for the practice. In particular, a person can now handle load-bearing elements of considerably larger area alone; the transport of the load-bearing elements to the construction site, or from construction site to construction site, or at the construction site to the respective installation simplified.
  • the manufacturing costs of the load-bearing element according to the invention are considerably lower than in the case of the above-described metal footboard element; This has primarily to do with the fact that in the manufacture of the load-bearing element according to the invention essentially only components that have been produced automatically, are assembled by simple assembly.
  • the main body can be made of fiber-reinforced plastic, which further improves the relation of the area size to weight.
  • glass fibers; Carbon fibers; Plastic fibers such as polyamide fibers, KEVLAR fibers (KEVLAR is a registered trademark), ARAMID fibers (ARAMID is a registered trademark); and wood fibers are cheap fibers. It is possible to work with relatively short fibers, typically less than 1 mm in length, to reinforce the plastic. It is favorable if the main body is an extrusion part made of (fiber-reinforced) plastic. This leads to low production costs of the main body.
  • the two head pieces are made of plastic. It is possible to work with fiber-reinforced plastics, the fibers typically being less than 1 mm in length and the fibers mentioned in the preceding paragraph being favorable.
  • the two head pieces each have a main part made of plastic and at least one attached to the main part support tab made of metal.
  • the two head pieces are in this case composite components, in which the materials plastic and metal are used in each case where they can play their inherent advantages well.
  • This more specialized design can be realized in the load-bearing element according to the paragraph "object of the invention is a plate-like .... Lastabilityelement ", but also in one or more of the above-discussed, more specific training.
  • the head pieces can form the head pieces as a die-cast metal or plastic injection molded parts. If the head pieces each have a main part made of plastic and at least one bearing claw made of metal, the main part can be designed as a plastic injection-molded part. Injection molded parts or die castings can be produced inexpensively at higher quantities.
  • the more specific embodiments referred to in this paragraph may be implemented in the load-bearing member according to the paragraph "in solution of this problem is the subject of the invention ", but also in one or more of the above-discussed, more specific embodiments.
  • the first header and the second header are identically formed parts. This also serves the rational production.
  • This special training can be realized in the load-bearing element according to the paragraph "In solving this problem is the subject of the invention ", but also in one or more of the above-discussed, more specific training.
  • the connecting walls each extend between the first wall and the second wall and are in a grid, ie repeating distance from center connecting wall to center connecting wall, positioned.
  • a grid in the range 40 to 70 mm is favorable.
  • the connecting walls may be perpendicular to the first and second walls.
  • the connecting walls, all or part of the connecting walls may be oblique to the first and second walls.
  • Still alternative embodiments of the connecting walls are possible, for. B. Y-shaped training.
  • Another wall parallel to the first wall and the second wall is possible. Functionally important is only that the first wall and the second wall are connected by components of the main body, which are located in the intermediate region between the first wall and the second wall, with each other and kept at a distance.
  • the main body including the two head pieces is at least 200 cm long, at least 30 cm wide, and at least 5 cm thick.
  • Load-bearing elements with a length of 300 cm, a width of 50 cm, and a thickness of 7 cm can be easily manufactured.
  • This special training can be realized in the load-bearing element according to the paragraph "In solving this problem is the subject of the invention ", but also in one or more of the above-discussed, more specific training.
  • the two head pieces are each designed on their side facing away from the main body such that at the head piece-to-head piece connecting two load-receiving elements such Auflagepratzen the two load-bearing elements, which are dimensioned for engaging behind a support support of the frame side by side Find.
  • the training principle is that both support claws of one, leading away from there load receiving element as well as support claws of the other, leading away from there load bearing element find space on one and the same support carrier of the scaffold.
  • This training principle can be realized in such a way that it does not matter whether a neighbor load-receiving element with a first header after or with a second Headpiece is then placed on the support carrier.
  • This special training can be realized in the load-bearing element according to the paragraph "In solving this problem is the subject of the invention ", but also in one or more of the above-discussed, more specific training.
  • first header and the second header each protrude with extensions into cavities of the main body.
  • the formation may be such that in at least one of the cavities, a first header extension, which abuts the inside of the first wall and is connected by a mechanical connecting element with the first wall, and a second header extension, the inside of the second wall and is connected by a mechanical connecting element to the second wall, are present.
  • a first header extension which abuts the inside of the first wall and is connected by a mechanical connecting element with the first wall
  • a second header extension the inside of the second wall and is connected by a mechanical connecting element to the second wall
  • the two head pieces each have at least one first support claw, which is dimensioned and shaped such that it engages behind it on a support of the framework, and at least one second support claw, which is dimensioned and shaped so that it rests on it the support of the framework extends to a maximum extent to the longitudinal center plane of the support carrier present.
  • the first wall is in the region of its longitudinal edges on the first connecting wall and the last connecting wall laterally over and is formed as a hollow channel. With the longitudinal edge projection of high strength, the load-bearing element can be placed on supports. In addition, arise on this Two handle strips, which increase the convenience of handling the load-bearing element.
  • the second wall is in the region of its longitudinal edges on the first connecting wall and on the last connecting wall laterally over. This increases the impact resistance of the load-bearing member in this area and provides two handles for convenient handling with the load-bearing member.
  • the first wall has on its outer surface a plurality of elevations for increasing the slip resistance for persons running on the load-receiving element.
  • the bumps can be distributed over virtually the entire outer surface of the first wall.
  • the longitudinal webs can be extruded.
  • support beams of the scaffold for the load-bearing elements are normally bearing supports that run transversely to the longitudinal extent of the load-bearing elements.
  • the support beams may have a rectangular cross section or a rectangular hollow cross section.
  • Suitable plastics from which the main body and the head pieces can be produced are familiar to the person skilled in the art. As an example among several possible ones, polypropylene is mentioned here.
  • For the fiber reinforcement can be used - as an example among several possible - called glass fibers.
  • the two headers are interconnected and secured to the main body by at least one tie rod, which is a metal wire rope or constructed of non-metallic fibers. It is emphasized that the formulation used at the beginning of this paragraph does not mean that the at least one tie rod is necessarily the only means of securing the head pieces to the main body. In addition to the tie rod or the tie rods, further fastening means for fastening the head pieces to the main body may be present.
  • the at least one tie rod may be a glass fiber strand, a carbon fiber strand or a polymer fiber strand, in particular strands of polyamide fibers, of ARAMID fibers (ARAMID is a registered trademark) and KEVLAR fibers (KEVLAR is a registered trademark).
  • ARAMID is a registered trademark
  • KEVLAR is a registered trademark
  • the at least one tie rod can pass through the first head piece or the second head piece at its two end regions and be provided on the side of the relevant head piece facing away from the main body with such an "enlargement” that the relevant end region is on the side of the relevant head piece facing away from the main body secured against withdrawal in the direction of the main body.
  • Good ways of training such a "magnification” are a nut screwed on, possibly with a washer, and a thickening element which z. B. by soldering, clamping, welding, gluing is attached to the end of the tie rod.
  • the at least one tie rod can be accommodated in a longitudinal hollow channel or in a longitudinal channel of the main body which is open at least on one side. In this way it is well protected and visually inconspicuous integrated. In addition, this prevents correspondingly in bending of the load-receiving element or of the main body of the load-receiving element of the substantially positioned in the height positioning of the second wall tie rods or positioned substantially in the height positioning of the second wall tie rods a chord of the arcuately bent load-receiving element extend; these tie rods are forced into the arcuate course.
  • a plurality of tie rods which are positioned substantially in the height positioning of the second wall, and at least one tie rod, which is positioned in relation to the above-mentioned tie rods in a higher position, may be present.
  • the greatest tensile forces prevail, at whose transmission the local tie rods optimally participate in this way.
  • the at least one, positioned in a higher position tie rods ensures that the headers are spatially distributed, so not only substantially in a single plane, connected to each other.
  • the two head pieces can be metal parts.
  • the two head pieces can be constructed of folded metal flat material. The latter design results in easy and inexpensive manufacturability and a good ratio of strength to material use.
  • the first header and the second header each may have a support portion on which a lower-side end edge portion of the main body is supported. This provides good conditions for the removal of the vertical loads on the main body over the head pieces.
  • the first head piece and the second head piece can each have a safety hook element, which can be handled from the useful side of the main body, wherein a part of the safety hook element protrudes in the lowered state to reach under a carrier of the frame and in the raised state, the projection for release the carrier subgrip is reduced.
  • the hook element In the lowered state, the hook element provides a safeguard against undesired upward movement of the respective end region of the load-receiving element relative to the carrier of the framework there.
  • Another object of the invention is a load-carrying board containing a plurality of load-bearing elements of the construction disclosed in the present application side by side, wherein a first head piece, which is attached to transverse ends of at least two main bodies, and a second head piece, which at the opposite transverse ends of the at least two main body is attached, are present.
  • a plurality of juxtaposed load-bearing elements are connected by the two head pieces to a wider Lastaüf faucettafel.
  • the main components of the load-bearing member 2 are an elongated main body 4 and two identical head pieces 6 (of which in Fig. 1 only one is visible).
  • the main body 4 is considerably longer than in Fig. 1 drawn; the main body 4 is cut off in the upper right, so to speak.
  • the width B of the main body is 25 cm
  • the length L of the main body is 300 cm
  • the thickness D of the main body is 7 cm.
  • the illustrated upper side of the respective load-receiving element forms its useful side.
  • the main body 4 has at the top in FIG Fig. 1 a first wall 8, below in Fig. 1 a second wall 10, and a total of five connecting walls 12 between the first wall 8 and the second wall 10.
  • the first wall 8 and the second wall 10 are horizontal and the connecting walls 12 are vertical
  • the connecting walls 12 need not necessarily be aligned at right angles to the first wall 8 and the second wall 10 and does not necessarily have to guide each connecting wall 12 from the first wall 8 to the second wall 10. So z. B.
  • first wall 8 and the second wall 10 are connected by components of the main body 4, which are located in the intermediate region to the first wall 8 and the second wall 10, and are kept at a distance.
  • the first wall 8 has both on the left edge and on the right edge of the main body 4 each have a lateral projection 14 of z. B. 2.3 cm wide.
  • Each projection 14 has a cross section in the form of a hollow, lying rectangle. The functions of the two projections 14 will be described in more detail below.
  • the second wall 10 has a protrusion 16 on both the left and right edges of the main body 4 which is substantially less wide than the protrusion 14.
  • the functions of the two projections 16 will be described in more detail below.
  • the connecting wall 12 at the left-top in the considered part of Fig. 1 is referred to as the first connecting wall 12a
  • the connecting wall 12 rightmost-bottom in the considered part of Fig. 1 is referred to as the last connection wall 12b.
  • the first wall 8 has a plurality of bumps 18 evenly distributed over this surface. To describe the shape of the bumps 18, the easiest way to visualize the way they have been made.
  • a total of twelve longitudinal, raised webs 20 of relatively low height have been formed on the surface mentioned-in this exemplary embodiment.
  • mutually spaced "apexes" running transversely to the main body longitudinal direction have been milled into the web row, the milling depth being such that the web parts have just been cut away, but not milled into the actual upper side of the first wall 8 has been.
  • the elevations 18 serve to increase the slip resistance for persons running on the load-receiving element 2.
  • a head piece 6 For the description of a head piece 6 is best considered both the right-top in Fig. 1 located part of Fig. 1 where you look (from diagonally above) on the front of the head piece 6, as well as the right-bottom in Fig. 1 located part of Fig. 1 where you look (from diagonally above) on the back of the head piece 6.
  • the head piece 6 has a central region 22 which, roughly speaking, is plate-shaped, the "plane" of the plate-like region 22 being at right angles to both the plane of the first wall 8 and the planes of the connecting walls 12.
  • the plate-like portion 22 closes the ends of the four cavities formed in the main body 4 by the first wall 8, the second wall 10, and the five connecting walls 12.
  • the head piece 6 has a total of two components, namely a main part 24 made of plastic and a clip 26 made of bent, strong sheet metal.
  • the bracket 26 is fastened to the main body 24 of the head piece 6 by means of two rivets 28.
  • the main part 24 of the head piece 6 has on its front side two outer support claws 30 a, the left outside or right outside the same end with the plate-shaped portion 22 and leave a free space 32 between them. When assembled, the free space 32 receives part of the bracket 26.
  • the support claws 30 extend as it were in extension of the first wall 8 in the longitudinal direction of the load-receiving element 2 and have - in this embodiment - a Vorrageionat V of 2.3 cm relative to the front of the plate-shaped portion 22.
  • the outer claws 30a are - except their outer wall-like boundary - broken down into a series of vertically extending, spaced walls.
  • the head piece 6 has on its main body 4 facing back a total of eight extensions 34, namely four upper extensions 34 in a row next to each other and four lower extensions 34 in a row next to each other.
  • the measured in the direction of the thickness D of the main body 4 thickness of the extensions 34 is z. B. about the same size as the thickness of first wall 8 and the second wall 10.
  • the extensions are - roughly speaking - triangular with rounded, the main body 4 facing tip.
  • the upper surfaces of the upper protrusions 34 and the lower surfaces of the lower protrusions 34 have a distance A from each other which corresponds to the clearance between the first wall 8 and the second wall 10.
  • the projections 34 or projection pairs can be inserted in each case accurately in one of the four cavities, which are formed by the first wall 8, the second wall 10 and the connecting walls 12, to the back of the plate-shaped portion 22 against the front end of the main body 4 abuts.
  • you can see, especially clearly in Fig. 2 and 3 in each case in the region of the rear side of the head piece 6, which comes when pushing together head piece 6 and main body 4 against the front end of a partition wall 12, a pair of walls 60.
  • the two walls 60 of each pair have a clearance from each other, which the thickness of the corresponding connecting wall 12 corresponds, and extend in the thickness direction D, and protrude from the back of the plate-shaped portion 22 away.
  • Each extension 34 has an opening extending in the thickness direction D of the main body 4 and the load-receiving element 2, respectively.
  • the first wall 8 has at this point matching four openings 36, as well as the second wall 10.
  • There are a total of four rivets 38 are provided in the assembled state in each case - from top to bottom - through an opening 38 in the first wall 8, through the two openings 36 of the respective pair of extensions 34, and through an opening 36 in the second wall 10 lead.
  • the head piece 6 is fixedly connected to the main body 4.
  • eight rivets could also be provided, four of which are associated with the first wall 8 and the four There associated extensions 34 and the other four associated with the second wall 10 and the four extensions 34 there.
  • the plate-like portion 22 is elongated in the width direction B to the left and to the right in its upper end portion; and from there in each case an outer extension 40 projects toward the main body 4.
  • the two outer extensions 40 pass precisely into the respective above-mentioned hollow channel in the respective lateral projection 14 of the first wall 8 and close the hollow channel.
  • the bracket 26 has, when viewed in the direction of the width B, the shape of a downwardly open U, wherein the voltage applied to the plate-like portion 22 leg 42 of the U in the thickness direction D is longer than the other leg 44 (more precisely: the two other legs) of the U.
  • the longer leg 42 is continuous in the width direction B.
  • the clip 26 has, as a result of corresponding punching, two spaced-apart inner bearing claws 30b, which, measured in the width direction B, each have slightly less than one quarter of the width of the longer leg 42.
  • the claws 30b are not positioned symmetrically to the median plane of the longer leg 42. If one in the right-upper part of the Fig.
  • L drawn load-bearing element 2 has at its not shown transverse end (right-up outside of the drawing sheet), a second head piece 6, which is formed equal to the described and drawn head piece 6 and rotated as it were rotated 180 ° at the local transverse end is.
  • the main body 4 is a plastic part.
  • the main body 4 is an extrusion of fiber reinforced plastic.
  • the main body 4 When moving in the longitudinal direction L along the main body 4, the main body 4 has a constant cross section, so that it can be easily manufactured by extrusion of plastic through an extrusion die.
  • the rule "constant cross-section" is broken only in the features produced by subsequent processing, d. H. the crossways through the rows of elevations 20 and the openings 36 for the rivets 38.
  • rivets 38 is not mandatory.
  • mechanical fasteners e.g. B. bolts with thickened head, screws, etc. The same applies to the rivets 28 described in connection with the attachment of the clip 26 to the main part 24 of the head piece 6.
  • the main part 24 of the head piece 6 is in the present embodiment, an injection molded part made of plastic, conveniently made of fiber-reinforced plastic.
  • a metal clip 26 which is fixed to the main part 24, one could also provide all four support claws 30 integrally made of plastic on the head piece 6.
  • Another alternative is to make the head piece 6 a total of metal, z. B. as a die-cast part.
  • load-receiving element 2 (which from the center of the Fig. 1 out to the right-top) shows Fig. 1 three more load-bearing elements 2, which are also just after a very short piece of their total length L cut straight. Specifically, there is a second load-bearing element 2a, which with its length L parallel to the first load-bearing element described in detail 2 is positioned. Concretely, there is also a third load-receiving element 2b, which from the center of Fig. 1 leads to the right-bottom, ie with its length L perpendicular to the length L of detail described, the first load-receiving element 2 extends. Concretely, there is finally a fourth load-receiving element 2c, which with its longitudinal orientation at right angles to the second load-receiving element 2a to the left-top in FIG Fig. 1 leads.
  • a small portion of a framework 50 is shown. If one thinks away for a moment, the third load-receiving element 2b and the fourth load-receiving element 2c, then the frame 50 z. B. outside be erected in front of a building wall, wherein the first load-receiving element 2 and the second Lforcementelement 2a extend with its longitudinal extension L parallel to the house wall.
  • the frame 50 z. B. outside be erected in front of a building wall, wherein the first load-receiving element 2 and the second Lforceabilityelement 2a extend with its longitudinal extension L parallel to the house wall.
  • two vertical supports 52 of the framework 50 of which - in the mentioned Hauswand Beis, piel - a support is relatively close to the wall and the other support 52 in the present embodiment about 50 cm further away from the wall of the house.
  • a cross member 54 with a rectangular hollow cross-section which is attached to the two supports 52.
  • longitudinal beams 56 are positioned, which also have a hollow rectangular cross-section and are secured to the supports 52.
  • a first set of side rails 56 is relatively near the house wall, whereas the other set of side rails 56 - in the present embodiment - is about 50 cm farther from the wall of the house.
  • the in Fig. 1 drawn cross member 54 serves as a support carrier for each transverse end of a total of four load-bearing elements, two of which are the drawn first load-receiving element 2 and the second drawn load-receiving element 2a.
  • the two other load-receiving elements close with each aligned longitudinal direction L to the left-bottom in Fig. 1 at.
  • the cross member 54 and the side members 56 of the frame 50 are horizontal.
  • the respective cross member 54 has a width b (in the longitudinal direction L of the load-receiving elements 2 and 2a), and the respective side rail 56 has a width b (which is measured in the width direction B of the load-receiving elements 2 and 2a, respectively). In the present embodiment, the width b is 5 cm.
  • the two outer support claws 30a which are integral with the main part 24 of the considered head piece 6, have a Vorragetress V, which is about less than half as large as the beam width b.
  • the second load-receiving element 2a shows the superimposed state in which the outer support claws 30a with their underside and the two inner support claws 30b respectively rest with the underside of their base leg 45 on the upper side of the crossbeam 54.
  • On the free spaces 46 in Fig. 1 to the left of the left inner claw 30b and between the two inner claws 30b of the bracket 26 is noted.
  • the two inner claws 30b of the next load-receiving element adjoining left-down in the second load-receiving element 2a fit into it. Since the outer support claws 30a protrude only slightly less than half of the support width b, the outer support claws 30a of the next load-bearing element can be easily connected there.
  • the inner claws 30b of the respective bracket 26 secure the load-receiving element 2 against slipping off the cross member 54 in the longitudinal direction L. If z. B. a person is somewhere on the load-bearing element 2 or somewhere an object is placed on the load-receiving element 2, then the resulting (and from the weight of the load-receiving element 2) resulting vertical forces on the two head pieces 6 at the transverse ends of the respective load-receiving element 2 derived in the respective two cross member 54.
  • the design can either be such that in each case only the two outer claws 30a transmit vertical forces (and in each case the base 45 of the inner claws 30b are located at a small distance above the upper side of the crossbeam 54), or that all four claws 30a and 30b the top of the cross member 54 rest and are involved in the transfer of vertical forces.
  • the design is such that even the inner claws 30b alone can transmit all occurring vertical forces, so the load-bearing element 2 is still functional and safe even if the outer claws 30a have been broken away.
  • the claws 30 of the two head pieces 6 rest on two cross members 54.
  • the projection 14 lies with its underside on slightly less than half the width b of a longitudinal member 56. Since the distance between two longitudinal members 56 is bridged by two parallel load-bearing elements 2, the other projection 14 does not rest on a longitudinal member 56.
  • the distances 14 of the first wall 8 thus have on the one hand the function of serving the support on a support of the framework 50.
  • the supernatants 14 each have a handle bar, a stiffening of the load-bearing element 2, and protection against edge damage achieved.
  • the three latter effects are also achieved with the narrower projections 16 of the second wall 10.
  • the described width B of 25 cm is only one embodiment.
  • the load-bearing element 2 according to the invention can easily be manufactured in a larger width B, in particular in a width B of 50 cm. In this case, there are a total of nine parallel cavities and ten connecting walls 12. Such a load-bearing element 2 weighs even at a length of 300 cm still under 20 kp, so that it can be handled by a man.
  • the number of claws 30 per head piece 6 of the load-bearing element 2 can be freely selected within reasonable limits; two claws 30a on the main part 24 of the header 6 and two claws 30b on the bracket 26 were an embodiment.
  • a wider load-bearing element 2 one could in each case provide a larger number and / or work with wider claws 30.
  • Fig. 1 It is easily conceivable that instead of the described attachment of the two head pieces 6 on the main body 4, an alternative way of connecting these three components of the load-bearing element 2 can also be provided.
  • These tie rods could each be passed through one of the cavities of the main body 4 and through the plate-like portions 22 of the two head pieces 6 and then contracted by the screw heads or nuts, these three components and thereby connect together.
  • the tie rods would usefully more in the lower part of the load-bearing element 2, where they are involved in the absorption of tensile forces in the load-bearing element 2.
  • Fig. 4 and 5 show two ways that you can make head pieces 6 simple and easier to make than the head pieces 6 according to Fig. 1 . 2 . 3 were. Both in the embodiment of Fig. 4 as well as in the embodiment of Fig. 5 is the respectively drawn head piece 6 an existing plastic alone injection molded part.
  • Fig. 4 Aligns the top of the head piece 6 with the upper surface of the main body 4.
  • the tops 62 of the claws 30 are located at a slightly lower level than the top of the main body 4. In this way, the above the claws 30 space for supporting a lateral projection 14 on the main body 4 of another load-receiving element 2, which connects at right angles to the drawn load-receiving element 2.
  • the claws 30 are in turn laterally offset in such a way positioned on the head piece 6, that in the longitudinal direction, the next load-receiving element 2 can be easily connected.
  • Each claw 30 of the next, to be connected load-receiving element 2 takes place either next to a claw 30 of the drawn load-bearing element 2 or between two claws 30 of the drawn load-receiving element. 2
  • the load-receiving element 2 of Fig. 6 differs from the previously described load-bearing elements 2 essentially in that the main body 4 - seen in its cross section - is formed differently and that the two mutually identical head pieces 6 are formed differently than in the previously described load-bearing elements 2 and that tie rods 70 (s. FIGS. 7 and 8 ) are present, each leading from the first header 6 to the second header 6.
  • the formation of the cross section of the main body 4 can be seen most clearly in the FIGS. 7 and 8 ,
  • the main body 4 has at the top in FIGS. 7 and 8 a first wall 8 and bottom in FIGS. 7 and 8 a second wall 10.
  • the walls 8, 10 are normally in horizontal positioning.
  • all four connecting walls 12 extend obliquely from the first wall 8 to the second wall 10.
  • the connecting walls 12 Three are longitudinal the main body 4 extending cavities 80 of the main body 4 is formed, wherein the central cavity 80 has a trapezoidal cross section and the two outer cavities 80 each have a triangular cross-section "with the tip down".
  • the inclination of the connecting walls 12 results in a better ratio of load capacity to material use than the perpendicular to the walls 8, 10 made connecting walls 12 in the embodiments described above.
  • the cross section of the main body 4 is substantially trapezoidal, with the shorter side of the trapezium below, with the already known from the previous embodiments supernatants 14 are still present.
  • a number of parallel grooves 82 are Run on the top of the first wall 8, in the longitudinal direction of the main body 4, a number of parallel grooves 82.
  • the grooves 82 serve to increase the slip resistance of the load-receiving element. 2
  • the main body 4 is a plastic extrusion, favorably made of fiber reinforced plastic, with more details given on plastic materials and reinforcing fiber materials in the general part of the description.
  • Each of the head pieces 6 is a part made of strong sheet metal by punching and folding.
  • Each header 6 essentially comprises: a base portion 90 which is substantially in the shape of a trapezoidal plate having three openings 92; a bent to the main body 4 down, lower support area 94; and three of the main body 4 facing away claws 96. Two of the support claws 96 are bent in the region of its free end down so that they when placing the load-bearing member on a local support carrier 56 (s. Fig. 1 ) of a framework can engage behind this support carrier.
  • the four tie rods 70 are drawn here in the form of circular cross-section metal rods. Each of the tie rods 70 is received in a longitudinal channel of the main body 4 extending along the main body 4.
  • the hollow channels 72 need not necessarily be closed all around.
  • the two "lower" longitudinal channels 72 which extend in the height positioning of the second wall 10, z. B. be open at the bottom.
  • the two other longitudinal hollow channels are located in the projections 14 and thus in the height positioning of the first wall eighth
  • Each tie rod 70 is provided at each of its two ends with a male thread, not shown in the drawing. Each of the tie rods 70 penetrates with little play a hole provided in the corresponding point 74 in the base portion 90 of the respective head piece 6.
  • the four tie rods 70 and the two head pieces 6 nuts 76 on the total of eight threaded End portions of the four tie rods 70 screwed up against the main portions 90 of the head pieces 6 may be present. In this way, the head pieces 6 are pressed against the end faces of the main body 4.
  • the two head pieces 6 are connected together by the tie rods 70 and fixed to the main body 4.
  • the respective tie rod 70 could have an integral, enlarged diameter end at one end and a nut 76 at the other end only.
  • Nuts 76 are only one of several ways in which the ends of the tie rods 70 can each be fixed on the side of the respective hole 74 facing away from the main body 4.
  • a safety hook element 100 can be seen, in each case in the end region of the main body 4 adjacent to the respective head piece 6.
  • the respective hook element 100 is substantially U-shaped with a base leg 102 on top of the first wall 8 and two further legs 104 extending in the lowered state of the hook member 100 with smaller bends through openings in the base portion 90 of the respective head piece 6 to below the further protruding portions of the two Auflagepratzen 96 extend.
  • This lowered state of the hook element 100 is in Fig. 6 well recognizable right-down. In this lowered state, the further legs 104 engage under the respective support carrier 56 (see FIG. Fig.
  • Fig. 9 and 10 make it clear that several main body 4 or load-carrying elements can be positioned side by side on the longitudinal side and connected to a load-bearing board 110 by a common head piece 6 at each end.
  • three main body 4 are interconnected. But you can also connect two main body 4 or more than three main body 4 together.
  • a load carrying board 110 by combining a plurality of main body 4 and load receiving elements 2 and two headers Alternatively, 6 can also provide without using tie rods 70.
  • Fig. 10 Trapezoidal intermediate pieces 112, each between two adjacent load-receiving elements 2.
  • the intermediate pieces 112 are each enclosed between two adjacent main body 4 and load receiving elements 2 and provide there in a vertical effective blocking of the two adjacent load-receiving elements 2 together.
  • tie rods 70 are in the embodiment according to Fig. 6 . 7, 8 Drawn and described as metal bars, but this is just one of several possible designs. Wire ropes, z. B. of several twisted wires, are another possibility. Strands made up of sufficiently long and tensile fibers are another convenient option. As fibers are in particular glass fibers, carbon fibers or polymer fibers into consideration.
  • ends of the metal rods and screwed nuts 76 have been described as ways of fixing the tie rods 70 on the side facing away from the main body 4 side of the respective head piece 6. There are a number of other ways you can do this constructively.
  • end pieces which have a larger cross-section than the tie rods 70 or the tie rods 70 interspersed holes 74, respectively on the side facing away from the main body 4 side of the holes 70 fixed to the tie rods 70, in particular by welding, soldering, Gluing, mechanical clamping.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Of Plates (AREA)

Claims (15)

  1. Elément de réception de charge (2) en forme de dalle, essentiellement rectangulaire, qui est approprié pour faire office de composant d'un échafaudage (50) à titre de revêtement praticable, présentant les caractéristiques suivantes:
    (a) un corps principal (4) en matière synthétique, ledit corps principal (4) présentant une première paroi (8) du côté utilisation de l'élément de réception de charge (2), une deuxième paroi (10) à distance de la première, ainsi que des parois de liaison (12) dans l'espace intermédiaire entre la première paroi (8) et la une deuxième paroi (10), le corps principal (4) - lorsqu'on progresse dans sa direction longitudinale - possédant essentiellement une section transversale constante; et
    (b) une première pièce de tête (6) et une deuxième pièce de tête (6), qui sont chaque fois fixées au corps principal (4) dans la zone d'une extrémité transversale de celui-ci et qui possèdent respectivement contre leur côté qui se détourne du corps principal (4) au moins une griffe de support (30 ; 96);
    caractérisé en ce que
    (c) l'élément de réception de charge (2) est équipé d'au moins un tirant (70), qui représente un câble d'acier ou qui est constitué par des fibres non métalliques, et par lequel les deux pièces de tête (6) sont reliées l'une à l'autre, et sont fixées au corps principal (4).
  2. Elément de réception de charge selon la revendication 1, caractérisé en ce que les deux pièces de tête (6) sont constituées d'une matière synthétique ou représentent des pièces métalliques.
  3. Elément de réception de charge selon la revendication 1, caractérisé en ce que les deux pièces de tête (6) possèdent respectivement une partie centrale (24) constituée d'une matière synthétique et au moins une griffe de support (30) en métal fixée à la partie centrale (24).
  4. Elément de réception de charge selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les pièces de tête (6) représentent des éléments en matière synthétique moulés par injection ou des éléments en métal moulés par pression.
  5. Elément de réception de charge selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les deux pièces de tête (6) sont constituées d'une matière métallique plate pliée.
  6. Elément de réception de charge selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le corps principal (4) représente un élément en matière synthétique obtenu par extrusion.
  7. Elément de réception de charge selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le corps principal (4) possède une longueur d'au moins 200 cm, les pièces de tête (6) étant incluses, une largeur d'au moins 20 cm et une épaisseur d'au moins 5 cm.
  8. Elément de réception de charge selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la première pièce de tête (6) et la deuxième pièce de tête (6) font respectivement saillie avec des prolongements (34 ; 40) dans des espaces creux du corps principal (4).
  9. Elément de réception de charge selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la première paroi (8) possède, sur sa surface externe, une multitude d'élévations (18) afin d'augmenter le caractère antidérapant pour les personnes qui se déplacent sur l'élément de réception de charge (2).
  10. Elément de réception de charge selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le tirant (70) est une tige en fibres de verre, une tige en fibres de carbone ou une tige en fibres polymères.
  11. Elément de réception de charge selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le tirant (70) est logé dans un canal longitudinal creux (72) ou dans un canal longitudinal du corps principal (4) ouvert au moins d'un côté.
  12. Elément de réception de charge selon l'une quelconque des revendications 1 à 11, caractérisé en ce que - lorsqu'on regarde en coupe transversale du corps principal (4) - plusieurs tirants (70), qui sont positionnés essentiellement à hauteur de la deuxième paroi (10), et au moins un tirant (70), qui est positionné plus haut par rapport aux tirants mentionnés, sont présents.
  13. Elément de réception de charge selon l'une quelconque des revendications 1 à 12, caractérisé en ce que la première pièce de tête (6) et la deuxième pièce de tête (6) possèdent respectivement une zone de support, sur laquelle vient s'appuyer une zone marginale terminale du côté inférieur du corps principal.
  14. Elément de réception de charge selon l'une quelconque des revendications 1 à 13, caractérisé en ce que la première pièce de tête (96) et la deuxième pièce de tête (96) présentent respectivement un élément en forme de crochet de sécurité (100), qui peut être manipulé à partir du côté utilisation du corps principal (4), une partie (104) de l'élément en forme de crochet de sécurité (100) faisant saillie, à l'état abaissé, pour venir saisir par en dessous un support (54) de l'échafaudage (50) et à l'état relevé, la saillie, pour la libération de la saisie du support par en dessous, est réduite.
  15. Panneau de réception de charge qui contient, disposés les uns à côté des autres, plusieurs éléments de réception de charge (2) selon l'une quelconque des revendications 1 à 14, caractérisé en ce qu'une première pièce de tête (6), qui est fixée aux extrémités transversales d'au moins deux corps principaux (4) et une deuxième pièce de tête (6), qui est fixée aux extrémités transversales opposées desdits au moins deux corps principaux (4), sont présentes.
EP12713192.8A 2011-04-14 2012-04-13 Élément de plancher en forme de plaque pour des échafaudages Active EP2697452B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12713192.8A EP2697452B1 (fr) 2011-04-14 2012-04-13 Élément de plancher en forme de plaque pour des échafaudages

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11162522A EP2511444A1 (fr) 2011-04-14 2011-04-14 Elément de de sol de type plaque pour structures d'echafaudage
EP12713192.8A EP2697452B1 (fr) 2011-04-14 2012-04-13 Élément de plancher en forme de plaque pour des échafaudages
PCT/EP2012/056849 WO2012140241A1 (fr) 2011-04-14 2012-04-13 Élément de plancher en forme de plaque pour des échafaudages

Publications (2)

Publication Number Publication Date
EP2697452A1 EP2697452A1 (fr) 2014-02-19
EP2697452B1 true EP2697452B1 (fr) 2015-11-18

Family

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Application Number Title Priority Date Filing Date
EP11162522A Withdrawn EP2511444A1 (fr) 2011-04-14 2011-04-14 Elément de de sol de type plaque pour structures d'echafaudage
EP12713192.8A Active EP2697452B1 (fr) 2011-04-14 2012-04-13 Élément de plancher en forme de plaque pour des échafaudages

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EP11162522A Withdrawn EP2511444A1 (fr) 2011-04-14 2011-04-14 Elément de de sol de type plaque pour structures d'echafaudage

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WO (1) WO2012140241A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021046614A1 (fr) * 2019-09-11 2021-03-18 Oldfields Holdings Ltd Plancher d'échafaudage, élément de plancher et éléments associés

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006380A1 (de) * 2013-04-12 2014-10-16 Polytech Gmbh Belagdiele für Gerüste
DE102018218849A1 (de) * 2018-11-06 2020-05-07 Peri Gmbh Gerüstsystem und Verfahren zur Herstellung des Gerüstsystems
DE202021100176U1 (de) * 2021-01-15 2021-02-11 Rux Gmbh Vorrichtung zur Befestigung von Belagriegeln an Baugerüsten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496029A (en) * 1983-03-30 1985-01-29 Shigeharu Kuroda Scaffold plank
FR2729692A1 (fr) * 1995-01-25 1996-07-26 Comabi Const Mat Batiment Plateau d'echafaudage
TW277087B (en) * 1995-04-14 1996-06-01 Tatsuo Ono Scaffolding planks
DE102004051614A1 (de) * 2004-10-22 2006-04-27 Peri Gmbh Industriegerüst
US20070289813A1 (en) * 2006-06-07 2007-12-20 Bothwell Timothy B Scaffold plank with end connector and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021046614A1 (fr) * 2019-09-11 2021-03-18 Oldfields Holdings Ltd Plancher d'échafaudage, élément de plancher et éléments associés

Also Published As

Publication number Publication date
EP2511444A1 (fr) 2012-10-17
EP2697452A1 (fr) 2014-02-19
WO2012140241A1 (fr) 2012-10-18

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