EP2586932A1 - Verriegelungsvorrichtung einer Gerüststange mit einer Sprossenstange einer Gerüstvorrichtung - Google Patents

Verriegelungsvorrichtung einer Gerüststange mit einer Sprossenstange einer Gerüstvorrichtung Download PDF

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Publication number
EP2586932A1
EP2586932A1 EP12190747.1A EP12190747A EP2586932A1 EP 2586932 A1 EP2586932 A1 EP 2586932A1 EP 12190747 A EP12190747 A EP 12190747A EP 2586932 A1 EP2586932 A1 EP 2586932A1
Authority
EP
European Patent Office
Prior art keywords
smooth
type
elongated
locking
locking device
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.)
Granted
Application number
EP12190747.1A
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English (en)
French (fr)
Other versions
EP2586932B1 (de
Inventor
Eric Sta
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.)
Tubesca Comabi SAS
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Tubesca Comabi SAS
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Publication date
Application filed by Tubesca Comabi SAS filed Critical Tubesca Comabi SAS
Publication of EP2586932A1 publication Critical patent/EP2586932A1/de
Application granted granted Critical
Publication of EP2586932B1 publication Critical patent/EP2586932B1/de
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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
    • E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
    • E04G7/304—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect with tying means for connecting the bars or members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
    • 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
    • E04G5/147—Railings specially adapted for mounting prior to the mounting of the platform
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/34—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using positive engagement, e.g. hooks or pins

Definitions

  • the invention relates to a device for locking a smooth type bar to a step-type bar of a scaffolding device.
  • Scaffolding means scaffolding in the traditional sense of the term as a step, a stepladder, a walkway, a platform, a shelf ladder or the like.
  • the scaffolding devices are elongated element structures arranged as bars or similar elongated elements.
  • the scaffoldings are mounted on site by assembling the bars together to allow an operator to access a high position of the building, especially on the facade. Scaffolding is designed to allow assembly and dismounting on site as easily and as quickly as possible.
  • the bars constituting the scaffolding comprise, for example, uprights, steps of intercropping of the uprights with each other, bracing bars, smooth and / or under stringers, reinforcement and / or support bars, or bars of stabilization of the scaffolding on the ground.
  • the bars come from sections of indifferently circular or polygonal section, for example square or rectangular.
  • the smooth type bars are bars for example horizontal which serve as guardrails.
  • Such smooth type bars can be fixed on bars, including horizontal bars, for example steps, by means of fasteners disposed at the ends of the smooth type bar.
  • This fixing element may in particular have a general hook shape.
  • locking elements arranged at both ends of the rail. These locking elements can be arranged to come into a locking position when the arm is placed on a rung. To unlock, the user manually grabs an unlocking handle and removes the bar.
  • a locking device is described in the document GB 2,431,427 .
  • a problem lies in the secure handling of different bars and / or different sets (such as sets of railings that include several bars already assembled together) of the scaffold to be installed on site. It is desirable that the assembly and disassembly of the scaffolding is carried out under optimized safety conditions for an operator performing these operations.
  • the document FR 2 922 929 describes an example of a rail having two locking elements at its respective ends.
  • Each locking member has a fixed hook portion and a movable hook portion.
  • One of the movable hooks has an orifice in which a rod secured to a diagonal bar can be introduced.
  • the operator can unlock this end of the bar by inserting the rod into this opening, raising this movable hook portion and driving the bar so as to remove it from the scaffolding device.
  • the other end of the arm has a movable hook portion adapted to adopt a locking position in which the arm is fixed on the rung, and an unlocking position allowing a withdrawal of the arm.
  • the manipulation of the rail by means of the diagonal bar is relatively delicate, in particular, the operator must handle the diagonal bar with great care so as to prevent the rail from escaping.
  • the movable hook portion of the other end of the bar returns to the locking position, which would prevent the removal of the bar.
  • the locking device is formed of several parts which represents a cost.
  • the locking device of the present invention has several advantages.
  • the first advantage is to be of a simpler arrangement than the devices of the prior art, especially those disclosed for example in WO 02/072977 A1 , AU 499 899 B .
  • a second advantage is the non-necessity of manual manipulation by a user, particularly at the level of smooth links / rungs, which increases the safety of users in scaffolding and accessibility to locking or locking means and / or unlocking.
  • Blocking means means means not allowing the movement of the movable element, in particular to its first position, especially under the simple effect of gravity. An external action is then necessary to move the movable element from its second position to its first position.
  • these locking means allow the displacement of the movable element to a third unlocking position, for example in free support on the elongated element of smooth type.
  • the movable element is held in the second position, which prevents this mobile element returns to the first locking position, despite any manipulation performed on the rail.
  • these locking means are shaped to cooperate with the movable element in the second position, so that it is necessary to exert a force on the movable element to be able to move it outside this second position, in particular a force greater than the force of gravity.
  • a force is preferably equivalent to 100 g to 1 kg.
  • the locking device comprises a single movable element adapted to be mounted on the elongated element of smooth type so that, in the second position the elongated step-type member is held by the movable member against the elongated smooth-type member.
  • the locking device may notably consist of a single mobile element.
  • the movable element may comprise a hinge pin intended to be rotatably mounted on the elongate element of smooth type, this axis extending perpendicularly to the longitudinal direction of this elongated element of smooth type in the assembled position of locking device.
  • the locking means of the movable element are for example shaped to keep the movable element in its second position by seizure.
  • seizure can be defined as being a grip or as being an excessive adhesion between two mechanical parts.
  • the invention is not limited by the way in which this seizing is implemented.
  • the locking means are shaped to be mounted on the elongated element of smooth type and comprise a contact zone with the movable element in the second position, this contact zone being shaped to exert sufficient pressure on the movable element to maintain it in the second position while being retractable and / or sufficiently deformable to allow movement of the movable element between its first and second positions.
  • provision may be made to place a spring-type mechanism inside the rail and through an orifice of the rail, so that this button mechanism spring comes to exert pressure on the movable element when this movable element reached this hole.
  • the locking means of a relatively flexible material and / or a shape giving a certain flexibility in the area of contact with the movable member.
  • this contact zone may be made of a flexible plastic or polymer material, in particular polyurethane, polyethylene, or PA6 plastic, or any other plastic material adapted.
  • a relatively soft material means a material having a Shore A hardness in the range of 80-100, preferably in the range 85-90. Such a material therefore gives flexibility to the new area of contact with the movable member.
  • the contact zone may comprise at least one bulge, for example in the form of a blade, protruding in the longitudinal direction of the elongate member of the smooth type when the locking device is mounted on the latter.
  • the invention is therefore not limited by the type of material or the shape of the locking means and in particular the contact area of the locking means.
  • the movable element may comprise at least one protrusion arranged to rub against the contact zone of the locking means when the movable element is in its second position.
  • the locking means are part of a smooth end piece shaped to be fixed to the end of the elongated element of smooth type.
  • This piece of end of smooth for example made of a plastic material, having the hardness properties defined above, can also allow to obstruct the end of the smooth.
  • the maintenance function is incorporated, in particular by seizing, in this piece of end of the rail. We thus come to take advantage of the existence of this piece to make him realize the maintenance in the second position.
  • the locking means in particular as a piece of end of smooth, may comprise a portion intended to be introduced into the rail and a portion intended to form protrusion from the end of the rail in the longitudinal direction of the rail.
  • the part intended to be introduced into the rail may preferably define blades with inclined external surfaces, this arrangement being able to facilitate the introduction of these locking means inside the rail, and to prevent on the contrary its withdrawal.
  • the portion intended to project from the beam preferably comprises a bulge defining a cavity.
  • This bulge therefore has, because of its relatively small thickness, typically 2-7 mm, a certain flexibility, in particular obtained because of the Shore A hardness of the material used, defined above.
  • This bulge usually has a width of 3-5 cm and a height of between 0.5 and 1.5 cm.
  • a clamping or contact zone defining a clamping range advantageously between 0.1 and 5 mm, in particular between 0 , 5 and 2 mm, especially in the thickness of the bulge.
  • blades may be defined intended to come into contact with the protrusions of the movable element in its second unlocking position.
  • the locking device comprises means of gripping integral in rotation of the movable element, their displacement thus causes the displacement of the movable element, which can facilitate the movement of the latter either manually either by means of an instrument.
  • these catch means are able to cooperate with a gripping instrument.
  • these gripping means and the movable element can be in one piece, which can simplify their realization.
  • the gripping means comprise one or two elongated tabs extending transversely to the longitudinal axis of the elongate element of the smooth type when the locking device is mounted on the latter, these gripping means being suitable for being pulled down by a gripping instrument having a hook-shaped portion engageable with these gripping means.
  • a rail device comprising at least one elongated smooth-type element equipped with at least one locking device, as described above.
  • the stringer device for example a stringer, may for example comprise at its two ends two respective locking devices as described above. These locking devices may be identical in their design or not.
  • the elongate element of the smooth type may comprise a recess on one of its longitudinal lateral faces and the locking device according to the invention may be mounted on the elongated element of smooth type so that the movable element in its locking position defines with the recess a receiving housing of an elongated element-type rung.
  • a scaffolding device comprising at least one stringer device as described above.
  • an elongated element such as a rail 9 has at each of its ends a movable element of 19 lock, these elements are identical in the example shown.
  • This movable member 19 is pivotally mounted about an axis D1.
  • the movable element 19 comprises two hooks 31, arranged on either side of the rail 9.
  • the movable member 19 has a generally U-shaped so as to be mounted on the rail 9, which has a rectangular section in the example.
  • the hooks 31 are arranged at the free ends of the two lateral wings of this U-shape.
  • the section of the movable element 19 is slightly greater than the dimensions of the rail 9 so as to allow pivoting about the axis D1, moving element 19 overlapping the rail 9.
  • the movable element 19 further comprises gripping means, for example two spines 42, in the form of tabs projecting laterally from the movable element 19 and extending in a substantially horizontal plane in the locking position of the movable element 19.
  • gripping means 42 are situated on the other side of the hooks 31 with respect to the axis D1, so that a pulling down of these gripping means 42 causes the hooks 31 to rotate towards the up along the F1 arrow of the figure 1 .
  • the beam 9 defines a recess 40 for receiving a portion of a rung (not shown).
  • this recess 40 and the hooks 31 define a housing for the step.
  • the locking position corresponds to an equilibrium position of the movable element 19.
  • the hooks 31 have a shape adapted so that, when the arm 9 has its end placed on a rung, the movable element 19 is pushed in rotation about the axis D1 according to the arrow F1 of the figure 1 to a position allowing the passage of the step to the recess 40, this position being located between the locking position and a second unlocked locked position described below. Once the rung wedged against the recess 40, the movable element 19 pivots again, due to the gravity, until reaching again the locking position. In other words, the locking of the arm on the rung is automatic.
  • the operator When an operator wishes to remove the arm 9 installed in lock on two respective steps, he moves the movable element 19 from the first locking position to a second unlocking position, by rotation of the movable element 19 about its axis of rotation. rotation D1 according to the arrow F1 of the figure 1 .
  • the second unlocking position is more particularly illustrated in the figure 2 .
  • the operator can manipulate an instrument 1, of the boom type and comprising at its end hook-type members, for example claws 11, so that these claws 11 cooperate with the gripping means 42 of the element 19. The operator can then pull the instrument 1 and thus cause the pivoting of the mobile element 19 about its axis D1 along the arrow F2, to the locking position shown figure 1 .
  • the movable element 19 further comprises excrescences 43, for example a pair of spines, extending in a direction transverse to the longitudinal direction of the strut 9. These excrescences 43 are intended to come into contact with a piece of tip. smooth when the movable member 19 is in the second position.
  • excrescences 43 for example a pair of spines, extending in a direction transverse to the longitudinal direction of the strut 9.
  • This piece of smooth end 30 is shown on the figure 3 . It comprises a portion 26 intended to be introduced into the rail 9 and a portion 27 intended to protrude from the end of the rail 9, in the longitudinal direction of the rail 9.
  • the portion 26 defines blades 24 with inclined external surfaces 28, this arrangement can facilitate the introduction of the part 30 inside the bar, and prevent the contrary withdrawal.
  • the portion 27 intended to project from the rail 9 comprises a bulge 21 defining a cavity 23.
  • This bulge 21 thus has, by its relatively small thickness, a certain flexibility.
  • the blades 22 and the protuberances 43 have a relatively symmetrical shape, so as not to oppose more resistance to the displacements of the movable element 19 in a pivoting direction than in the other.
  • the blades 22 and / or the protuberances 43 have an asymmetrical shape, for example it would be possible to more easily allow the pivoting of the mobile element 19 when this mobile element 19 is pulled by an instrument 1, that the pivoting in the opposite direction.
  • the movable member 19 would have reached or exceeded the second unlocking position, it would be necessary to oppose a certain force to reinstall the movable member 19 in the locking position of the figure 1 .
  • the piece 30 may for example be obtained by molding a suitable plastic material, for example polyurethane.
  • the instrument 1 may comprise a handle 10 and a handle end forming a clamp to allow attachment to the rail 9, between the claws 11 and a portion 12 of a shank 13.
  • the shank 13 is integral with the handle 10 and claws 11 are rotatably mounted on the handle 10 about the longitudinal axis of the handle.
  • the barrel 13 is turned, and when the portion 12 of the barrel 13 passes under the rail 9, this portion 12 exerts a force against the rail 9, because its upper surface is slightly inclined, blocking the rail 9 between the barrel 13 and the claws 11.
  • the instrument 1 thus ensures the gripping of the smooth 9.
  • the user begins by placing the movable elements 19 on either side of the rail 9 in their second position, also known as the pre-emergence position, as shown in figure 2 .
  • the pre-emergence position the risk that the moving elements 19 return to their equilibrium position is relatively low.
  • the risks of falling of the arm 9 are relatively limited, the arm resting on the rungs at its recesses 40, which stabilizes it.
  • the displacements of the movable elements 19 can be carried out manually, but advantageously it will be possible to use the instrument 1, which allows manipulation from a lower floor to the stage of the platform corresponding to this rail 9. This helps to enhance security.
  • the operator can engage the claws 11 of the instrument 1 on the engagement means 43 of the movable member 19, then exert a pull on these engagement means 43 to rotate the movable member 19 around of its axis D1,
  • the operator can enter the arm 9 by means of the instrument 1.
  • the operator begins by placing the claws 11 above the rail 9, then turns the handle 12 of the instrument 1 on itself so as to cause the rotation of the drum 13, until the 9 is smoothed between the elements 11 and 12 of the instrument 1.
  • the operator has then grasped the beam 9 by means of the instrument 1, and can remove the arm 9 from the scaffolding. This manipulation can be performed relatively easily and with a risk of falling of the relatively narrow arm 9.
  • the assembly is preferably done while the movable elements 19 of the locking devices are in their first position, so as to allow automatic locking of the beam 9 on a rung or the like.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP20120190747 2011-10-31 2012-10-31 Verriegelungsvorrichtung einer Gerüststange mit einer Sprossenstange einer Gerüstvorrichtung Active EP2586932B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1159871A FR2981968B1 (fr) 2011-10-31 2011-10-31 Dispositif de verrouillage d'une barre de type lisse a une barre de type echelon d'un dispositif d'echafaudage

Publications (2)

Publication Number Publication Date
EP2586932A1 true EP2586932A1 (de) 2013-05-01
EP2586932B1 EP2586932B1 (de) 2015-05-06

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EP20120190747 Active EP2586932B1 (de) 2011-10-31 2012-10-31 Verriegelungsvorrichtung einer Gerüststange mit einer Sprossenstange einer Gerüstvorrichtung

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Country Link
EP (1) EP2586932B1 (de)
ES (1) ES2543566T3 (de)
FR (1) FR2981968B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160123024A1 (en) * 2014-10-31 2016-05-05 Hünnebeck GmbH Deck for a shoring tower

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU499899B2 (en) 1976-06-16 1979-05-03 Access Plant (Hire and Sales) Ltd. Locking hook for scaffolding
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
GB2174747A (en) * 1985-05-08 1986-11-12 Alto Systems Ltd Hook device
WO2002072977A1 (de) 2001-03-13 2002-09-19 Peri Gmbh Zerlegbares gerüst, geländerelement dafür und verfahren zum anbringen mehrerer geländerelemente
GB2431427A (en) 2005-05-13 2007-04-25 Youngman Group Ltd Scaffolding guard rail
EP1795671A1 (de) * 2005-12-06 2007-06-13 Andrew Charles Owens Gerüstbelag mit faltbaren Haken
DE102007011716A1 (de) * 2007-03-10 2008-09-11 Hymer-Leichtmetallbau Gmbh & Co. Kg Verfahren zum Auf- und Abbau eines Arbeitsgerüstes und Montagehilfe hierfür
FR2922929A1 (fr) 2007-10-29 2009-05-01 Cdh Group Lisse de garde-corps montable en securite sur un echafaudage protection comportant une telle lisse et procede de montage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU499899B2 (en) 1976-06-16 1979-05-03 Access Plant (Hire and Sales) Ltd. Locking hook for scaffolding
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
GB2174747A (en) * 1985-05-08 1986-11-12 Alto Systems Ltd Hook device
WO2002072977A1 (de) 2001-03-13 2002-09-19 Peri Gmbh Zerlegbares gerüst, geländerelement dafür und verfahren zum anbringen mehrerer geländerelemente
GB2431427A (en) 2005-05-13 2007-04-25 Youngman Group Ltd Scaffolding guard rail
EP1795671A1 (de) * 2005-12-06 2007-06-13 Andrew Charles Owens Gerüstbelag mit faltbaren Haken
DE102007011716A1 (de) * 2007-03-10 2008-09-11 Hymer-Leichtmetallbau Gmbh & Co. Kg Verfahren zum Auf- und Abbau eines Arbeitsgerüstes und Montagehilfe hierfür
FR2922929A1 (fr) 2007-10-29 2009-05-01 Cdh Group Lisse de garde-corps montable en securite sur un echafaudage protection comportant une telle lisse et procede de montage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160123024A1 (en) * 2014-10-31 2016-05-05 Hünnebeck GmbH Deck for a shoring tower
US10100538B2 (en) * 2014-10-31 2018-10-16 Hunnebeck Gmbh Deck for a shoring tower

Also Published As

Publication number Publication date
FR2981968B1 (fr) 2014-08-22
FR2981968A1 (fr) 2013-05-03
ES2543566T3 (es) 2015-08-20
EP2586932B1 (de) 2015-05-06

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