EP3192940A1 - Gerüst, das zwei ausfahrbare leitereinheiten umfasst und ein geländer stützt - Google Patents

Gerüst, das zwei ausfahrbare leitereinheiten umfasst und ein geländer stützt Download PDF

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Publication number
EP3192940A1
EP3192940A1 EP17151274.2A EP17151274A EP3192940A1 EP 3192940 A1 EP3192940 A1 EP 3192940A1 EP 17151274 A EP17151274 A EP 17151274A EP 3192940 A1 EP3192940 A1 EP 3192940A1
Authority
EP
European Patent Office
Prior art keywords
assembly
ladder
scale
amount
railing
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.)
Pending
Application number
EP17151274.2A
Other languages
English (en)
French (fr)
Inventor
Eric Sta
Xavier BOURGOIS
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
Original Assignee
Tubesca Comabi SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tubesca Comabi SAS filed Critical Tubesca Comabi SAS
Publication of EP3192940A1 publication Critical patent/EP3192940A1/de
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned down
    • 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
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism
    • 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
    • E04G5/142—Railings extensible or telescopic
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/16—Struts or stiffening rods, e.g. diagonal rods
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/24—Non-hinged free-standing ladders
    • E06C1/28—Non-hinged free-standing ladders multi-part
    • E06C1/30—Non-hinged free-standing ladders multi-part extensible, e.g. telescopic
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
    • 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
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E04G2001/242—Scaffolds movable on wheels or tracks
    • 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
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E04G2001/248—Inclined struts
    • 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
    • E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
    • E04G1/30—Ladder scaffolds
    • E04G2001/302—Ladder scaffolds with ladders supporting the platform
    • E04G2001/305—The ladders being vertical and perpendicular to the platform

Definitions

  • the invention relates to a scaffolding system comprising two ladder assemblies facing each other, a set of plates resting on these ladder assemblies, and a set of railings, in which the sets of ladders ladder are deployable in height.
  • the Applicant sells under the names SK4 and SK6 scaffolding adjustable in height, thus sliding ladder parts relative to others.
  • locking means for preventing a return to the retracted state from a plurality of locking positions, this plurality defining a locking step between two adjacent positions.
  • the tray and railing are installed while the scaffold assembly is retracted. This avoids having to perform this railing installation when the scaffold is deployed and the relatively high plateau.
  • the deployment is done upwards. During this deployment, temporary differences in height from one ladder plane to another may induce tension on the railing.
  • This movement of the guardrail amount relative to the corresponding scale amount during deployment of only one of the two scale sets can compensate for the difference in height between sets of ladders during deployment.
  • the guardrail assembly can be relatively rigid, since the voltages induced by the difference in height between the ladder assemblies can be absorbed by such a partial connection to the base of the guardrail posts.
  • This scaffolding system can be deployed in height by one person, intervening alternately from one scale plan to another.
  • partial connection is to be interpreted in the classical sense of the term, that is to say that there exists, in at least one direction, a possible relative movement between the linked parts. by a partial connection. Two parts connected by a partial connection can move relative to each other. On the other hand, no relative movement is possible between two parts connected by a rigid connection.
  • the medium may include the tray set or not.
  • the ladder amounts assembled to the railing posts may be amounts of the ladder plans, or not, for example amounts vertically of a plateau assembly or an intermediate structure between the scale planes and the guardrail.
  • At least one ladder assembly may comprise several ladder portions able to slide relative to each other to ensure the deployment at height.
  • At least one amount of at least one ladder portion may define on one of its fields a male slide member, and at least one amount of at least one other ladder portion of the same ladder assembly may be profiled in the longitudinal direction so as to define on one of its fields, opposite the field defining the male slide element, a female slide element.
  • the scaffolding system may be arranged so that the male slide member cooperates with the female slide member so that the ladder portions corresponding to these slide members can slide relative to each other in the longitudinal direction of the amounts.
  • each scale set may form a rigid whole.
  • the system may further comprise a folding base pre-mounted between these sets of scale.
  • the scaffolding system can thus move from a closed state, in which the two sets of ladders are brought closer to one another, to an open state, in which the two sets of ladders are kept apart. one from the other by the folding base.
  • the scaffolding system can thus be particularly compact.
  • the scaffolding can be arranged so that whatever the state of the scaffolding system, the base Folding remains attached to scale sets and remains in the plane occupied by the folding base in the open state.
  • the scaffolding system may comprise a locking device arranged to trigger a blocking of the basic elements when the open state is reached.
  • the scaffolding system may advantageously comprise a first slide member integral with a member of the folding base, and a second slide member, cooperating with the first slide member, and be arranged so that when the scaffolding system transition from the folded state to the open state, the first slider element moves from a first position relative to the second slider element to a second position.
  • the locking device can be arranged to trigger a blockage of the first slide element when said element reaches the second position.
  • the assembly between the guardrail post and the ladder post can be arranged so that, when only one of the ladder sets is being deployed, the guardrail post is rotated relatively. to the amount of scale.
  • Such a pivot connection between the railing post and the ladder upright can be used to absorb the tensions induced by the difference in height between the ladder assemblies, while providing support for the railing posts .
  • This rotation can be performed around an axis normal to the longitudinal direction of the scale post and parallel to the plane of the scale assembly corresponding to this railing post, for example an axis parallel to the longitudinal direction of the rail. a step.
  • the assembly can be designed so that the angular range allowed for this rotation reaches plus or minus 3 ° with respect to the longitudinal direction of the scale upright, advantageously plus or minus 5 °, advantageously plus or minus 7 °, for example more or less 10 ° or 15 °.
  • this rotation can be extended at least until the height difference between the scale sets reaches the locking pitch.
  • the partial linkage can be arranged so that the rotation is limited before the difference in heights between the scale sets reaches the locking pitch, in which case the movement between the guardrail amount and the ladder amount can continue for example by a translation.
  • this assembly is arranged so that, when only one of the ladder assemblies is being deployed, the amount of guardrail is translated in translation relative to the amount of ladder.
  • This translation may have a component in the longitudinal direction of the amount of guardrail, or the amount of scale, and / or a component in a plane normal to these directions.
  • the assembly can be arranged to allow a translation movement in a normal direction to a plane of the scale assembly.
  • this translational movement may be authorized over a range representing at least 0.1%, advantageously at least 0.5%, advantageously at least 1% of the distance between the scale sets at the level of the plateau assembly. .
  • This translation can be combined with a rotation, or not. In the latter case, the translation can be extended at least until the difference in height between the scale sets reaches the locking pitch.
  • the movement of the guardrail relative to the corresponding scale amount when only one of the scale planes is driven in motion can combine a translational movement and a rotational movement.
  • a translation movement in a direction normal to a plane of the scale set can be provided over a relatively short, and combined with a rotational movement about an axis parallel to the longitudinal direction of a rung.
  • This rotational movement may be authorized over a range reaching at least one angle ⁇ whose sine is equal to the ratio between the locking pitch and the length of the distance between the two scale parts, of the two respective scale sets. , the highest.
  • the translational movement may be allowed over a range reaching at least one value equal to the product of (1-cos ⁇ ) and this distance length between scale parts.
  • the invention is not limited to a particular form of assembly, provided that it is made between the ends of the guardrail and ladder posts.
  • a rod system received in an oblong hole extending in the longitudinal direction of the upright, and / or in a direction normal to the plane of the ladder portion, a slide system with stops, or the like .
  • the amount of railing may be in the continuity of the corresponding ladder amount, that is to say that the lower end of the railing post may be opposite the upper end of the ladder post corresponding when the assembly is performed.
  • an offset with a component in a plane normal to the longitudinal direction of the scale upright, between these ends, provided that the assembly involves the ends of these uprights.
  • the forces induced by the height offsets are transmitted via the upper end of the ladder post.
  • the scaffolding system may comprise, for at least one, and preferably each, amount of railing, an assembly element between the end of the railing post and the end of the ladder post .
  • This connecting element can be made of several parts assembled by a partial connection. In other words, this can be the assembly element that supports the efforts induced by the deployment of one of the scale plans.
  • this connecting element may comprise a part integral with one of this amount of guardrail and the corresponding scale amount, intended to form a rigid connection with one of the said amount of guardrail and the said amount corresponding scale, and a portion intended to cooperate with the other of the corresponding scale amount and the amount of guardrail, thus forming the partial connection with the other of the scale amount and the guard amount. body.
  • the amount of railing, the ladder amount and the corresponding connecting member may be arranged to allow a rotational movement of the guardrail relative to the ladder post and / or a translational movement. the amount of guardrail relative to the amount of ladder.
  • the connecting element may comprise a central portion forming flanges, these flanges being intended to be opposite the ends of the guardrail and ladder posts.
  • the portion intended to cooperate with the ladder upright can be arranged so that when the connecting element is installed on the ladder upright, the rim portion remains remote from the end of the ladder upright.
  • the portion intended to cooperate with the ladder amount may have an outer diameter smaller than the internal diameter of the ladder upright.
  • the assembly member is pivotally mounted on the ladder post.
  • the assembly element may pivot slightly relative to the amount of scale with which it cooperates, and possibly be also driven in translation relative to this amount of scale.
  • the portion intended to cooperate with the amount of scale may define a recess for receiving a rod integral with the amount of scale and extending in a direction having a component in a plane normal to the longitudinal direction of the scale plane.
  • This recess may have an internal diameter greater than the outer diameter of the rod, thus allowing a drive in translation of the guardrail relative to the amount of scale.
  • the guardrail assembly may comprise at least one rod-type element rigidly secured to a corresponding railing post, and forming with said railing post a railing frame.
  • the guardrail assembly can pass from a lowered position to a raised position, and vice versa, by a rotation of the railing frame around an axis having a parallel at a time in a plane defined by said railing frame and in a plane defined by the plateau set.
  • the connecting element can define a hinge about this axis, for the tilting of the guardrail in the lowered position or in the raised position.
  • the hinge member can thus be in several parts, one including the portion secured to the guardrail amount, the other including the portion cooperating with the amount of ladder.
  • the assembly element can be in one piece.
  • a scaffolding system 1 comprises a set support tray, comprising two sets of scales 10, 11, facing one another, and kept at a distance from each other through an articulated spar 160 and a folding base 60.
  • the folding base 60 defines a pantograph, and comprises bar-type elements, here rods 41, 41 ', 141, 141', articulated, secured to the uprights 120, 130 of the ladder assemblies. 10, 11 by hinge members 42, 43.
  • the scaffolding device further comprises stabilizing elements 40 and remote wheels 50.
  • Each scale assembly 10, 11 comprises a plurality of scale portions 100, 101, 102, and 110, 111, 112, here three scale portions.
  • Each ladder portion 100, 101, 102, 110, 111, 112 comprises two uprights 120, 121, 122, 130, 131, 132 and rungs 3 forming a spacer between the uprights.
  • the invention is not limited to a number of steps sufficient to allow user access for each scale plan.
  • the terms "scale set”, “scale plan”, “scale part” etc. are to be interpreted as covering any rigid frame with two uprights and at least one spacer element, typically at least two steps.
  • the scale assemblies can support the entire plateau directly, i.e., the plateau assembly is in contact with the scale sets, or indirectly. In the latter case, there may be intermediate pieces between the tray assembly and the ladder assemblies, for example a lower part of the guardrail assembly.
  • ladder assemblies can support the guardrail assembly directly or indirectly.
  • the steps 3 can be attached to the uprights 120, 121, 122, 130, 131, 132 by welding. In an embodiment not shown, it may provide a fastening by riveting, or other.
  • the ladder portions 100, 101, 102, and 110, 111, 112 of the same scale assembly 10, 11 are slidable relative to one another in pairs.
  • Locking means here hooks 150 pivotally mounted on the ladder portions intended to be raised, and able to engage with two rungs of two adjacent ladder portions (one rung of the ladder portion on which is mounted hook and a rung of the adjacent ladder portion of the inner side of the scaffold) prevent extended ladder portions from falling back under the effect of gravity.
  • These hooks can thus ensure locking for several scaffold heights, the pitch between these heights being the inter-rung distance.
  • the scaffolding system 1 further comprises a tray assembly 30 with a hatch, not shown on the figure 1 , defined in the floor of the board.
  • the ladder system 1 further comprises a guardrail assembly 21 comprising guard rails 270, rails 21, 22, underlays 24, 25 and reinforcement bars 23.
  • the Figures 11 and 12 show a scaffolding close to the scaffolding system shown on the figure 1 in the compact state.
  • These scaffolding systems are one-piece, with the exception of the tray assembly 30 which is detachable, i.e., with the exception of the tray assembly 30, each of the elements of these Scaffolding systems is secured by a link that can not be easily defeated to the rest of the scaffolding system.
  • the scaffolding of the figure 1 is devoid of items likely to be lost, except for the set of trays 30 which is detachable.
  • the one-piece scaffolding 1 Figures 11 and 12 is presented, in the folded state, in the form of a cube in the form of a 0.98x dimension pad 0.92 x 1.38 meter for example and provided with four swivel wheels and adjustable in height 50.
  • the scalding system is arranged so that the rods 41, 41 ', 141, 141' of the folding base 60 are pivotable relative to the ladder portions 110, 130 to which they are attached.
  • the rods 41, 41 ' are pivotally mounted at a first height, near the highest rung of each ladder portion 100, 110.
  • the scaffolding 1 comprises the fixed hinge elements 42, secured to the uprights 120, 130 and simply allowing a pivoting around the x direction. In other words, these hinge members 42 retain their position during the step of moving the ladder portions 120, 130 away from each other.
  • the rods 141, 141 ' are pivotally mounted on the uprights 120, 130, respectively, by means of movable hinge elements 43, the detail of one of which is illustrated by the figure 6 .
  • These movable hinge elements 43 are arranged to support a pivoting movement of the adjoining rod 141 around the x direction, and also to support a translational movement in the y direction relative to the corresponding upright 120, 130.
  • the amount 130 thus defines, in one side of its profile, a female slide element, here a flanged groove 62.
  • flange groove receives a male slide element, here a T-element 142, in one piece with the movable hinge member 43.
  • the movable hinge element 43 can be obtained by producing a profile defining the T-element 142 and two surfaces 242 facing each other, then by installing between these surfaces 242 a rod otherwise received in a bore of the articulated rod 141, to allow rotation about the x-axis of this rod 141.
  • the folding base 60 is thus fixed to two uprights 120, 130, by means, for each upright 120, 130, of a fixed hinge element 42 and of a movable hinge element 43.
  • the fixed hinge member 42 is secured for example by welding to the corresponding amount 120, 130 substantially at the level of the highest step 3 of the corresponding scale portion, 100, 110, while the movable hinge member 43 is translatable upward in the y direction when the ladder portions 100, 110 are spaced from each other.
  • a locking device 300 is set up automatically at the end of movement.
  • the locking device may for example comprise a pin 301 mounted on a spring not shown, and a plate 302 defining an orifice (not visible on the figure 6 ) the plate 302 is fixed on the slide member 43.
  • the non-visible hole is opposite the pin 301. Due to the forces exerted by the spring, the pin 301 is embedded in this orifice, thus ensuring the blocking of the element 43, and therefore of the rod 141.
  • the plate comprises a projecting portion 303, abutting against an edge of the element 43, in order to prevent the plate 302 from being pivoted with respect to this element 43.
  • an operator can pass a finger in the ring 304 and cause the pin 301 out of the hole.
  • the operator will have to driving the rod 141 in motion while holding the pin 301 out of the hole to prevent re-locking in the open position.
  • Such a system involving a sliding connection and an automatic locking at the end of the race may be more reliable than the prior art in which human intervention was necessary, the operator coming to fix rods by means of pins.
  • the time saving during assembly can be appreciable.
  • a manual unlocking is provided for security reasons.
  • the tray assembly 30 comprises two parts and a hinge for folding these two parts against each other by a rotational movement about the x axis when the tray assembly is oriented in what will be its position of use.
  • the tray assembly can thus be stowed when in the folded state, in the tile-like structure, as illustrated in FIG. figure 12 .
  • the platform can be placed by means of hooks 71 on the highest steps 3 of the ladder portions 102, 112.
  • the guardrail assembly 20 can be raised.
  • this assembly 20 comprises two subassemblies 220, 221, each corresponding to a respective scale plane 11, 10 (see FIGS. Figures 10, 11 and 13 ).
  • the subassembly 220 comprises two amounts 270, 273 in the continuity of the two amounts 122, 122 'of the ladder portion 112, and the amounts 271, 272 of the subassembly 221 are in the continuity of the amounts 132, 132' of the part of scale 102.
  • Each subassembly 220, 221 comprises a rail 21, 22, a corresponding sub-smooth 25, 24, as well as reinforcement bars 23 forming a spacer between these smooth and those under smooth.
  • the rail 22 and the sub-smooth 24 each define a hinge 26 for folding a railing portion 201 of the subassembly 221 comprising the rail 22 and this smooth under 24 on itself.
  • a guard part 202 comprising the rail 21, the sub-rail 25 and the corresponding reinforcement bars 23 can be folded back on itself by means of similar articulation 26.
  • the upright 271 forms with rod-like elements 272, 274, 275, here another upright 272 and spacer elements 274, 275, a railing frame in the continuity of the scale plane 10.
  • the upright 273 forms with rod-like elements 270, 276, 277, here another upright 270 and spacer elements 276, 277, another railing frame, this time in the continuity of the scale plane 11 .
  • each railing portion 201, 202 is secured by a non-removable link 223, 224 to a corresponding upright 271, 273, this non-removable link 223, 224 defining a hinge about a direction close to and parallel to the longitudinal direction of this amount 271, 273, so that in the compact state, the guardrail portion 201, 202 folded back on itself by the hinge elements 26 can be folded against the corresponding railing frame.
  • each railing subassembly 221, 220 is attached to the corresponding ladder assembly 10, 11 by an x-joint at the member 28, allowing the rigid railing frames and sleeved sets folded over these railing frames to pivot about axes (D1), (D2), respectively, through the outside of the scaffolding system 1.
  • axes (D1), (D2) are each parallel to a line lying both in a plane defined by the plateau (horizontal plane, or plane normal to the longitudinal direction of the uprights if they are vertical) and in a plane defined by the corresponding railing frame.
  • the guardrail subassemblies 220, 221 are folded against the different ladder portions 120, 121, 122 and 100, 101, 102, thus making it possible to obtain a relatively large scaffolding system. compact as illustrated on the Figures 11 and 12 .
  • each subset of guardrails is rotated around the x direction, so that the posts 270, 271, 272, 273 extend in the extension of the uprights 122, 132 as shown in FIG. figure 7 .
  • the railing portions 201, 202 are then fixed by their end 204, 205 opposite the end secured to the corresponding amount 271, 273, the amount 270, 272 of the other respective scale plane by means of fastener 208, for example wire locks.
  • the guard can be put in place by a technician who remains on the ground, which corresponds to a level 3 security.
  • each upright 120, 121, 122, 122 ', 130, 131, 132, 132' comprises a metal section such as the profiles represented on the figure 8 .
  • This figure shows the sections of three uprights 120, 121, 122 when the respective ladder portions 110, 111, 112 are against each other.
  • Each post profile 120, 121, 122 comprises sides 63 or fields, and sides 64 or sidewalls, the fields 63 being of smaller dimensions than the blanks 64.
  • the posts 120, 121, 122, 122 'and 130, 131, 132, 132' are oriented such that the planes of the respective fields 63 are substantially normal to the z direction.
  • each upright 120, 121, 122 has a recess, or groove, 62 defined in a field with flanges 66 partially closing the recess 62, and a slider member 65 defined in the field 63 opposite the defining field. recess 62 of this amount.
  • the slide member 65 of a post 121,122 is inserted into the flanged groove 62 of the respective adjacent post 120,121 so that the post 121 is slidable relative to the post 120 and the post 122 can slide relative to the amount 121.
  • the uprights 120, 121, 122, 130, 131, 132 define, besides a flanged groove 62 on a field, two recesses 61 in the respective two opposite flanks. These recesses 61 allow to receive the steps 3.
  • the uprights 120, 121, 122, 130, 131, 132 define two-to-two cooperation means, directly in their normal sides to the length of the scaffolding, here flanged grooves 62 and slide elements 65.
  • each of the uprights defines both a flanged groove 62 and a slide member 65, so that the uprights 120, 121, 122, 130, 131, 132 may be identical to each other.
  • This can make it possible to provide a single scale portion model 100, 101, 102, 110, 122, 112, so that the logistics and supply for manufacturing can be relatively simple.
  • the fields of the intermediate post 121 receive a surface treatment to facilitate the sliding of the amounts relative to each other. to others. This surface treatment is not applied to the flanks of this amount 121, nor to the amounts 120, 122.
  • the uprights 120, 121, 122 all receive an identical surface treatment on only one of their fields, for example on the fields corresponding to the T parts 65.
  • connecting elements 28 connected to the respective uprights 130, 132, defining partial links allowing relative movements between the railing posts 270-273 and the ladder posts 122, 122 ', 132, 132' on which these railing posts are installed.
  • the guardrail assembly 20 can be designed relatively rigidly, because the voltages induced by the height offsets during the vertical deployment will be absorbed by movements of the guardrail relative to the amounts of scale.
  • the assembly element 28 comprises a part 435 intended to be secured to the upright 271 without any particular clearance, for example by means of a rod fixed by riveting 440 to the upright 271, or the like, and a part 433 intended to cooperate with the amount 132.
  • the part 433 defines with the amount 132 a partial connection, so as to absorb the movements induced during the deployment of scale plans.
  • the element 28 comprises a central portion with flanges 438, intended to be inserted between the uprights 271 and 132.
  • the piece 433 defines a recess 436 to receive a rod (not shown) fixed by riveting 432 or solder to the post 132.
  • This recess 436 is arranged high enough so that when this piece 433 is (partially) received in the post 132, and the rod is received in the recess 436, the lower rim of the portion 438 remains remote from the upper end of the recess 436. amount 132, as illustrated by the figure 15 .
  • this central portion 438 may be in contact with the lower end of the upright 271.
  • the element 28 is thus capable of moving relative to the amount 132.
  • an operator can mount a ladder portion of one of the ladder planes by a height corresponding to the height between two respective rungs, then pass on the other side of the scaffolding system and raise the part of the ladder. this time the scale is twice the height between two respective steps.
  • the scaffolding can thus be deployed in height by one person.
  • the element 28 further defines a pivot connection for the rotation of the guardrail frame to move from the lowered position to the raised position, and vice versa.
  • the piece 28 is in two pieces 433, 435, mounted articulated on a rod 437.
  • the latch 434 comprises a non-visible hook and blocking, in the locked position, a rod 439, for locking parts 433, 435 relative to each other.
  • the part 435 can pivot about the axis (D1). As this piece is part of the frame of guardrail including the amount, this rotation can allow to tilt this frame railing.
  • the lowest scale portions 101, 102 are the least spaced ladder portions of each other. This allows a user of a scaffolding device accessing a tray assembly 30 via the hatch defined in the floor, to access this hatch in a relatively comfortable manner and especially to descend from the scaffold in a relatively secure manner.
  • This stair arrangement can be relatively interesting for a user accessing the tray through the inside of the scaffolding. This can thus make it possible to provide a relatively simple tray access of the hatch type that is simpler and less restrictive to implement than a platform access of the gate type on guardrails.
  • the scaffolding device 1 comprises two pre-assembled diagonals 170.
  • Each diagonal includes a large diameter tube 171 and a small diameter tube 172 installed in the large diameter tube.
  • the small diameter tube of the diagonal may have a diameter for example of 40 mm and the large diameter tube of the diagonal may have a diameter for example of 50 mm.
  • the large diameter tube 171 is pre-mounted on a lower scale portion, 100 or 110, while the small diameter tube 172 is pre-mounted on an uppermost scale portion 102 or 112.
  • the free end of the smaller diameter tube is inserted into the free end of the larger diameter tube. It will be possible to leave the tubes free to move relative to each other until the deployment at height is completed.
  • a pin system is used to define the length of the diagonal thus formed by these two tubes by blocking relative movements. This locking can be performed when the scaffold 1 has reached the desired height.
  • This attachment of the diagonals to the ladder portion may be advantageous compared to a fixation with respect to a pre-assembly on the plate only, Indeed, this telescopic diagonal can be pre-assembled and when the plate is moved, the Fixing between the diagonals and the rest of the scaffolding does not need to be defeated.
  • the installation of diagonals is independent of the set of tray, which can be more reassuring.
  • the scaffolding system can thus be installed in a relatively simple, fast and intuitive manner and while satisfying a high level of safety requirement.
  • the scaffolding system according to the first mode of embodiment of the invention can reach a height of the order of 3 meters, and while remaining relatively compact in the folded state.
  • the guardrail assembly 20 is also pre-mounted, i.e. say that it is not possible for the user to misplace it, thus offering greater security.
  • FIGs 4 and 5 illustrate an alternative embodiment in which the pantograph 60 (or accordion) folding base has been replaced by a folding base 60 'with a spacer element, here a vertical rod 39.
  • figure 14 relates to an embodiment close to that of the Figures 4 and 5 and will be commented simultaneously.
  • the folding base shown corresponds to the open state.
  • the folding bases 60 Like the folding bases 60, the folding bases 60 'remain in the vertical plane (yz) when the scale planes 10, 11 are spaced from each other along the length z.
  • the folding base 60 comprises first bar-type elements, here rods 45, 45', articulated in x about a hinge 36, and second bar-type elements, here rods 38, 38 ', hinged in x about a hinge 37.
  • the hinges 36 and 37 are located at the ends of the vertical rod 39.
  • the folding base 60 'further comprises two diagonal rods 44 fixed by a hinge 46 to the rods 45 (or, in not shown embodiments, to the uprights 120, 130).
  • the element 53 comprises a slide element here a ring 153, cooperating with another slide element, here the vertical rod 39. More specifically, the ring 153 defines a recess opening, and the vertical rod 39 is received in this recess so as to slide relative to the ring 153.
  • a support piece 154 On the ring 153 is fixed rigidly a support piece 154, on which the rods 44 are pivotally mounted.
  • the rod 39 defines an orifice that is not visible in the figures, and the ring defines an orifice 403.
  • a pin 401 mounted on a spring 402 can be received in these orifices when they are opposite one another, thus ensuring a triggered lock simply because the ring 153 has reached a predetermined position relative to the rod 39.
  • a door knob component 404 against which the spring 402 presses, may be manually pushed toward the ring 153 to provide unlocking.
  • the diagonal bars 44 make it possible to maintain the scale planes at a distance.
  • the scale planes are further separated by two bar members 48, 48 'also articulated and also able to fold against each other by means of a hinge 49 as shown in FIGS. Figures 4 and 5 .
  • the base 60 is held in the vertical plane and defines a slide connection for automatically bringing the folding base to a locking position.
  • the lock is set up automatically at the end of the movement, allowing you to reconcile time savings and safety.
  • each folding base is entirely pre-assembled thanks to the sliding links 43. Thanks to these slide links, each of the rods of the folding base is brought to its position in the automatically deployed state, without particular intervention of the operator.
  • the wheels 50 are offset by means of adjustable rods, thus allowing the level shifts of the scaffolding system 20.
  • the wheels 50 are pivotable and adjustable in height.
  • the wheels 50 being offset to the outside, the forces can be better supported and the risk of tilting is lower.
  • the scaffolding system 1 and the system according to the other embodiments shown can thus be relatively compact in the folded state while having a certain height here of the order of 3 meters in the deployed state and this while complying with the EN 1004 standard.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP17151274.2A 2016-01-12 2017-01-12 Gerüst, das zwei ausfahrbare leitereinheiten umfasst und ein geländer stützt Pending EP3192940A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1650218A FR3046621B1 (fr) 2016-01-12 2016-01-12 Echafaudage comportant deux ensembles d'echelle deployables et supportant un garde-corps.

Publications (1)

Publication Number Publication Date
EP3192940A1 true EP3192940A1 (de) 2017-07-19

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EP (1) EP3192940A1 (de)
FR (1) FR3046621B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11203872B2 (en) 2020-02-26 2021-12-21 Dennis J. Hilgendorf Rolling access step

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312623A1 (fr) * 1975-05-28 1976-12-24 Gubri Sa Ets L Perfectionnements apportes aux ensembles du genre des echafaudages
DE20315839U1 (de) * 2003-10-15 2003-12-18 Hailo-Werk Rudolf Loh Gmbh & Co. Kg Baugerüst
FR2929304A1 (fr) * 2008-03-26 2009-10-02 Echelles Fortal Soc Par Action Dispositif d'echafaudage repliable et a hauteur de travail modulable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312623A1 (fr) * 1975-05-28 1976-12-24 Gubri Sa Ets L Perfectionnements apportes aux ensembles du genre des echafaudages
DE20315839U1 (de) * 2003-10-15 2003-12-18 Hailo-Werk Rudolf Loh Gmbh & Co. Kg Baugerüst
FR2929304A1 (fr) * 2008-03-26 2009-10-02 Echelles Fortal Soc Par Action Dispositif d'echafaudage repliable et a hauteur de travail modulable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TUBESCA COMABI: "Présentation de l'échafaudage roulant X'Tower", 20 April 2016 (2016-04-20), pages 1, XP054976721, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=U9NQRhjvv8U&feature=youtu.be> [retrieved on 20160811] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11203872B2 (en) 2020-02-26 2021-12-21 Dennis J. Hilgendorf Rolling access step

Also Published As

Publication number Publication date
FR3046621B1 (fr) 2018-01-26
FR3046621A1 (fr) 2017-07-14

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