EP0524896B1 - Sperrvorrichtung beim Zusammenbau von Gerüsten - Google Patents

Sperrvorrichtung beim Zusammenbau von Gerüsten Download PDF

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Publication number
EP0524896B1
EP0524896B1 EP19920420239 EP92420239A EP0524896B1 EP 0524896 B1 EP0524896 B1 EP 0524896B1 EP 19920420239 EP19920420239 EP 19920420239 EP 92420239 A EP92420239 A EP 92420239A EP 0524896 B1 EP0524896 B1 EP 0524896B1
Authority
EP
European Patent Office
Prior art keywords
tubular element
key
assembly
tubular
socket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19920420239
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English (en)
French (fr)
Other versions
EP0524896A1 (de
Inventor
André Peronnier
Claude Tonnard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
Original Assignee
CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
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Publication of EP0524896A1 publication Critical patent/EP0524896A1/de
Application granted granted Critical
Publication of EP0524896B1 publication Critical patent/EP0524896B1/de
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
    • E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
    • E04G7/307—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect with tying means for connecting the bars or members

Definitions

  • the present invention relates to scaffolding, and it relates, more particularly, to a locking device belonging to a scaffolding structure and intended to ensure a connection between a vertical upright or tubular post, on the one hand, and the end one or more horizontal or inclined tubular elements, on the other hand, constituting in particular beams or railings.
  • This device is of the type comprising, on the upright or tubular post, a member such as a yoke, socket or collar offering at least one opening opening upwards, and cooperating with a key carried by the end of the horizontal tubular element or inclined to be connected, the end of this horizontal or inclined tubular element comprising a downwardly facing end spout and intended to be introduced into the opening of the member such as yoke, socket or collar, and the key being mounted mobile and retained on said tubular element behind the aforementioned end spout, so that this key takes place, during assembly, outside the member such as yoke, socket or collar, by being pressed against the outer surface of this organ.
  • connection devices have also been proposed between a post or tubular scaffolding post, on the one hand, and the end of a tube forming a spar or railing, on the other hand, of the type indicated in the introduction, that is to say in which, unlike previous embodiments, the key takes place outside the member such as a socket, instead of being introduced into the opening of this socket, which receives a terminal spout of the horizontal tubular member.
  • Examples of devices of this type, with "external" key are provided by French patents N ° 1492420, N ° 2443545 and N ° 2527711, as well as by European patent application N ° 0116679.
  • the present invention aims to eliminate these drawbacks of "external" keys, by providing a locking device for the assembly of scaffolds in which the active surface of the key is increased, so as to improve the mechanical strength of the assembly, all in allowing the connection of several tubular elements of distinct directions to the same socket.
  • the end of the horizontal or inclined tubular element is flattened, and the key has a configuration in " U "with two parallel branches located on either side of the flattened end of the tubular element, the key thus having two active faces cooperating with the external surface of the member such as yoke, socket or collar.
  • each of the two branches of the "U" key has an inclined opening preferably terminated by a circular recess, an axis or a retaining pin fixed to the flattened end of said tubular element passing through the two slots of the key.
  • the flattened end of the tubular element is limited, with respect to the non-flattened part of this tubular element, by an inclined line directed upwards and rearwards, so that a stop is formed to maintain the key in a rearwardly inclined position when it is released.
  • the tubular element may include, in the region of its flattened end, an internal reinforcement sleeve, which provides additional resistance to this flattened end.
  • a post or tubular post 1 belonging to a structure scaffolding laterally carries at a certain level a socket 2.
  • the socket 2 is fixed, in particular welded by one side against the upright or vertical post 1.
  • the three other sides of the socket 2 defining three vertical bearing surfaces 3, facing outwards, and this socket 2 also defines an opening 4, opening upwards and downwards.
  • the sleeve 2 makes it possible to connect to the upright or tubular post 1, in the same assembly node, the respective ends of three tubular elements 5 horizontal or inclined which, seen in plan, form two by two of the right angles.
  • the device for assembling a tubular element 5 to the upright or post 1 will be described below, the devices possibly being identical for the three elements connected to the same socket 2.
  • the tubular element 5, the section of which is circular over its current length, has a flattened end 6, obtained by crushing the tube.
  • the flattened end 6 is limited, with respect to the non-flattened part of the tubular element 5, by an oblique line 7, inclined to the horizontal by an angle A of the order of 40 ° for example , the inclined line 7 being directed upwards and backwards from the lower edge 8 of the flattened end 6.
  • a key 11 is movably mounted and retained on the flattened end 6 of the tubular element 5.
  • the key 11 has two parallel branches 12, located on either side of the flattened end 6, and connected together by a middle part 13 extending above the flattened end 6.
  • Each of the two arms 12 of the key 11 has an inclined opening 14 ending in a circular recess 15, the two openings 14 belonging respectively to the two arms 12 being located opposite.
  • Behind the notch 9, the flattened end 6 of the tubular element 5 carries a pin or a small retaining pin 16, which passes through the two slots 14 of the key 11.
  • the flattened end 6 of the element tubular 5 also comprises, above the notch 9, a local deformation 17 which prevents the tilting of the key 11 towards the front and its disengagement from the assembly zone.
  • the end spout 10 is inserted from above into the opening 4 of the socket 2, as shown in the Figure 3.
  • the tubular member 5 is then self-held in position, the key 11 being located outside of the sleeve 2. It suffices to strike from top to bottom with a hammer on the middle part 13 of the key 11 to push it in and ensure, thanks to the inclination of the lights 14, the pressing of the front faces of its two branches 12, which are its active faces, against the external surface 3 of the sleeve 2.
  • the assembly is thus blocked by pressing perpendicular to the surface 3 of the sleeve 2, the key 11 with two branches 12 also ensuring good transverse stiffness.
  • the lower ends of the two arms 12 of the key are struck from below upwards. Thanks to the appropriate shape of the flattened end 6, limited by the inclined line 7, the key 11 then tilts itself backwards and takes an inclined position; thanks to the circular recess 15 of the lights 14, cooperating with the pin or the axis 16, the key 11 is maintained correctly in the inclined inactive position (traced in dashed lines in FIG. 3), in particular during handling of the element tubular 5. This also provides a small footprint for storing the tubular element 5.
  • the inclined position of the key 11 is also advantageous in use, because it allows the key 11 to fall automatically into the locking position outside the sleeve 2, by tilting when the end spout 10 engages in the sleeve. 2, the deformation 17 then intervening to limit the tilting of the key 11.
  • the flattened end 6 of the tubular element 5 is constituted by a crushed part of this tubular element 5 itself.
  • an internal reinforcement sleeve 18 is introduced into the region of the end of the tubular element 5, before it is crushed.
  • the end of the tubular element 5, reinforced by the inner sleeve 18, is formed by the press in a single operation ensuring simultaneously: the flattening of this end 6 according to the desired shape, the cutting of the notch 9, the drilling the hole receiving the pin or the axis 16, and obtaining the deformation 17.
  • Figures 6 and 7 show another embodiment, in which an insert 19, such as a stamped or forged part, is welded to the end of the tubular element 5, in particular by means of a flange 20, to form the flattened part 6 receiving the key 11.
  • the key 11 here has two branches 12 devoid of lights, which are connected together by a small pin 21 which can be engaged in the notch 9 delimiting the terminal spout 10.
  • the blocking effect results from the 'inclination of the rear faces 22 of the two branches 12 of the key 11, which are supported on the flange 20 when this key 11 is pressed; thus, the reaction is no longer carried out as previously via an axis or a pin, but against the surface of the flange 20, and the locking forces can be higher.
  • the axis 21 makes the key 11 captive, while allowing it to tilt backwards - see the position indicated in dashed lines. This constructive arrangement allows an assembly of high mechanical strength, while remaining very compact, and of course it retains all the advantages of the first embodiment, previously described.
  • FIG. 8 illustrates another embodiment, applied to the connection of a tubular element 5 ′ constituting a diagonal, therefore inclined to the horizontal.
  • the end of the tubular element 5 ′ also has a flattened part 6 ′ here, for example in the form of an added flat iron, formed by stamping or forging, and forming an angle with respect to the tubular element 5 ', so as to assemble to one side of the sleeve 2 as in the previous embodiments, the key in "U" 11 having no modification compared to the first embodiment.
  • the diagonal formed by the tubular element 5 ′ transmits inclined forces F to the sleeve 2, which can decompose into a horizontal force F1 and a vertical force F2.
  • the vertical component F2 tends to tear off the end 6 'of the tubular element 5'.
  • the lower end of the terminal spout 10 of the part 6 ′ has a retaining notch 23, turns backwards, which during blocking engages under the lower edge of the sleeve 2 in order to ensure a positive bond, unlike blockages obtained by the sole friction effect in the previous embodiments.
  • this latter arrangement can also be used on horizontal tubular elements 5, as a safety measure.
  • the horizontal tubular elements 5 can be either longitudinal members, crosspieces or railings belonging to the structure of the scaffolding. These elements are fixed in any combination on the three accessible sides of the sleeve 2, the opening 4 of which offers sufficient free space to receive three spouts 10 belonging respectively to three tubular elements 5 or 5 '.
  • the same amount or tubular post 1 has sockets 2 at different levels, and possibly oriented in two or more directions, so as to multiply the possibilities of assembly.
  • the "U" key 11 can be produced either as a part whose shape comes directly from molding, or by bending an initially rectilinear part, or by assembling several elements.
  • the middle part 13 of the key 11 can receive externally an insert, on which one comes to strike to depress this key in order to block it.

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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)

Claims (10)

  1. Verriegelungsvorrichtung für einen Gerüstaufbau, welche dazu bestimmt ist, eine Verbindung zwischen einem vertikalen rohrförmigen Ständer oder Pfosten (1) einerseits und dem Ende eines oder mehrerer horizontaler oder geneigter Rohrteile (5, 5') andererseits sicherzustellen, wobei die Vorrichtung an dem rohrförmigen Ständer oder Pfosten (1) ein Element (2), bspw. eine Kappe, einen Rohransatz oder einen Kragen, umfaßt, das zumindest eine nach oben offene Öffnung (4) aufweist und mit einem von dem Ende (6, 6') des anzuschließenden, horizontalen oder geneigten Rohrteils (5, 5,) getragenen Verbundanker (11) zusammenwirkt, wobei das Ende (6, 6') dieses horizontalen oder geneigten Rohrteils (5, 5') eine nach unten weisende und zum Eingriff in die Öffnung (4) des Elements (2), bspw. Kappe, Rohransatz oder Kragen, vorgesehene Endnase (10) umfaßt, und wobei der Verbundanker (11) bewegbar angebracht und an dem Rohrteil (5, 5') hinter der Endnase (10) zurückgehalten ist derart, daß der Verbundanker (11) beim Zusammenbau an der Außenseite des Elements (2), bspw. Kappe, Rohransatz oder Kragen, Platz nimmt, wobei er gegen die Außenfläche (3) dieses Elements (2) gedrückt wird, dadurch gekennzeichnet, daß das Ende (6, 6') des horizontalen oder geneigten Rohrteils (5, 5') abgeflacht ist, und daß der Verbundanker (11) eine U-förmige Gestalt mit zwei parallelen, beidseits des abgeflachten Endes (6, 6') des Rohrteils angeordneten Schenkeln (12) besitzt, wobei der Verbundanker (11) so zwei aktive Flächen aufweist, welche mit der Außenfläche (3) des Elements (2), bspw. Kappe, Rohransatz oder Kragen, zusammenwirken.
  2. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach Anspruch 1, dadurch gekennzeichnet, daß jeder der beiden Schenkel (12) des U-förmigen Verbundankers (11) eine geneigte, vorzugsweise von einer kreisförmigen Ausnehmung (15) abgeschlossene Öffnung (14) aufweist, wobei eine Halteachse oder ein Haltestift (16), die bzw. der an dem abgeflachten Ende (6, 6') des Rohrteils (5, 5') befestigt ist, die beiden Öffnungen (14) des Verbundankers (11) durchsetzt.
  3. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Endnase (10) aus einem Einschnitt (9) resultiert, der in dem abgeflachten Ende (6, 6') des Rohrteils (5, 5') ausgehend von dem unteren Rand (8) dieses abgeflachten Endes (6, 6') ausgebildet ist.
  4. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach Anspruch 3, dadurch gekennzeichnet, daß die beiden Schenkel (12) des öffnungsfreien U-förmigen Verbundankers (11) mittels einer Achse (21) verbunden sind, welche in den die Endnase (10) des Rohrteils (5) begrenzenden Einschnitt (9) einrückbar ist.
  5. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das abgeflachte Ende (6) des Rohrteils (5) gegenüber dem nicht abgeflachten Abschnitt dieses Rohrteils (5) von einer nach oben und hinten gerichteten geneigten Linie begrenzt ist, so daß ein Anschlag gebildet ist, um den Verbundanker (11) bei seiner Entriegelung in der nach hinten geneigten Stellung zu halten.
  6. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das abgeflachte Ende (6, 6') des Rohrteils (5, 5') eine lokale Verformung (17) aufweist, welche das Verschwenken des Verbundankers (11) nach vorne verhindert.
  7. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Rohrteil (5) im Bereich seines abgeflachten Endes (6) eine innere Verstärkungshülse (18) umfaßt.
  8. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das abgeflachte Ende (6) des Rohrteils (5) von einem zusammengedrückten Abschnitt dieses Rohrteils selbst gebildet ist.
  9. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Element (2), bspw. Kappe, Rohransatz oder Kragen, das an dem rohrförmigen Ständer oder Pfosten (1) befestigt ist, dazu ausgelegt ist, zwei oder drei Endnasen (10) aufzunehmen und so als Ausgangspunkt für mehrere horizontale oder geneigte Rohrteile (5, 5') unterschiedlicher Richtungen zu dienen.
  10. Verriegelungsvorrichtung zum Zusammenbau von Gerüsten nach Anspruch 9, bei welcher das Element ein Rohransatz (2) allgemein rechteckiger Gestalt ist, der mit einer Seite an einem rohrförmigen Ständer oder Pfosten (1) befestigt ist, dadurch gekennzeichnet, daß der Rohransatz (2) dazu ausgelegt ist, mittels seiner drei anderen Seiten den Anschluß von drei horizontalen Rohrteilen (5) zu ermöglichen, die paarweise miteinander rechte Winkel bilden.
EP19920420239 1991-07-22 1992-07-16 Sperrvorrichtung beim Zusammenbau von Gerüsten Expired - Lifetime EP0524896B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9110080 1991-07-22
FR9110080A FR2679581B1 (fr) 1991-07-22 1991-07-22 Dispositif de blocage pour l'assemblage d'echafaudages.

Publications (2)

Publication Number Publication Date
EP0524896A1 EP0524896A1 (de) 1993-01-27
EP0524896B1 true EP0524896B1 (de) 1995-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920420239 Expired - Lifetime EP0524896B1 (de) 1991-07-22 1992-07-16 Sperrvorrichtung beim Zusammenbau von Gerüsten

Country Status (5)

Country Link
EP (1) EP0524896B1 (de)
CZ (1) CZ282499B6 (de)
DE (1) DE69203298T2 (de)
FR (1) FR2679581B1 (de)
SK (1) SK279745B6 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20005627U1 (de) * 2000-03-25 2000-06-29 Krause-Werk GmbH & Co KG, 36304 Alsfeld Rohrelement
GB0010698D0 (en) * 2000-05-03 2000-06-28 Sgb Services Plc Improvements in or relating to a scaffolding
CN106894620B (zh) * 2017-04-26 2019-05-03 上海森大机械制造有限公司 一种具有固定斜撑的脚手架

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1092566A (fr) * 1952-11-07 1955-04-22 Sterling Foundry Specialties Perfectionnements relatifs aux échafaudages tubulaires du type démontable
US2878079A (en) * 1957-01-29 1959-03-17 Hyre Robert Warren Scaffolding
DE1559057A1 (de) * 1965-06-22 1969-09-25 Ernest Rombaldi Keilverbindung,insbesondere zum Zusammenfuegen rohrfoermiger Geruestteile
FR1492420A (fr) * 1966-08-26 1967-08-18 Eddison Plant Ltd Perfectionnements aux échafaudages
GB1408566A (en) * 1971-09-17 1975-10-01 Evans & Sons Ltd C Couplings for use in scaffold structures for coupling an upright member to a transom or ledger member
US3807884A (en) * 1971-11-08 1974-04-30 Symons Corp Releasable metal scaffolding connector
GB1604610A (en) * 1977-06-30 1981-12-09 Mccrory Scaffolding Ni Ltd Builders scaffolding
ZA786869B (en) * 1978-12-07 1980-03-26 Form Scaff Pty Ltd Improvements in or relating to scaffolding
FR2527711B1 (fr) * 1982-05-28 1986-08-22 Select Etem Sa Noeud d'assemblage pour structures diverses, telles que des echafaudages
DE3236648A1 (de) * 1982-10-04 1984-04-05 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Geruest, insbesondere baugeruest
FR2548250B1 (fr) * 1983-07-01 1986-09-12 Richard Patrick Materiel d'echafaudage a clabotage

Also Published As

Publication number Publication date
DE69203298T2 (de) 1996-01-04
DE69203298D1 (de) 1995-08-10
CZ226992A3 (en) 1994-02-16
SK279745B6 (sk) 1999-03-12
EP0524896A1 (de) 1993-01-27
FR2679581B1 (fr) 1995-09-01
FR2679581A1 (fr) 1993-01-29
SK226992A3 (en) 1995-09-13
CZ282499B6 (cs) 1997-07-16

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