EP1936108B1 - Bras pour une échelle ou un échafaudage - Google Patents

Bras pour une échelle ou un échafaudage Download PDF

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Publication number
EP1936108B1
EP1936108B1 EP07024363A EP07024363A EP1936108B1 EP 1936108 B1 EP1936108 B1 EP 1936108B1 EP 07024363 A EP07024363 A EP 07024363A EP 07024363 A EP07024363 A EP 07024363A EP 1936108 B1 EP1936108 B1 EP 1936108B1
Authority
EP
European Patent Office
Prior art keywords
ladder
stabilising arm
boom
arm
stabilising
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.)
Active
Application number
EP07024363A
Other languages
German (de)
English (en)
Other versions
EP1936108A3 (fr
EP1936108A2 (fr
Inventor
Eberhard Lang
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.)
Hymer Leichtmetallbau GmbH and Co KG
Original Assignee
Hymer Leichtmetallbau GmbH and Co KG
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 Hymer Leichtmetallbau GmbH and Co KG filed Critical Hymer Leichtmetallbau GmbH and Co KG
Publication of EP1936108A2 publication Critical patent/EP1936108A2/fr
Publication of EP1936108A3 publication Critical patent/EP1936108A3/fr
Application granted granted Critical
Publication of EP1936108B1 publication Critical patent/EP1936108B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/42Ladder feet; Supports therefor
    • E06C7/423Ladder stabilising struts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00Scaffolds primarily resting on the ground
    • E04G1/24Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C1/00Ladders in general
    • E06C1/02Ladders in general with rigid longitudinal member or members
    • E06C1/14Ladders capable of standing by themselves
    • E06C1/16Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E06C1/22Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00Scaffolds primarily resting on the ground
    • E04G1/24Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E04G2001/248Inclined struts

Definitions

  • the invention relates to a boom for a ladder or scaffolding according to claim 1.
  • pivotable boom - in the form of a rod - to arrange.
  • the invention relates to according to all the above-mentioned ladders and scaffolding, in which it is possible to pivotally attach a lateral boom rod.
  • the boom To move the boom to a working position (spread apart from the ladder or scaffold), the boom must be swung sideways and lengthened to allow a support point on the ground remote from the ladder or scaffolding.
  • the boom If the boom is to be pivoted in and brought into a non-active rest position, then it must be pivoted to the ladder or the scaffold and its length shortened.
  • each one part of the wire hanger is pivotally mounted on the boom and the opposite part of the wire hanger can be suspended or removed from the ladder.
  • the DE 10104689 A1 discloses a ladder stabilizer, wherein a single telescoping boom is hingedly connected to the upper end of a goat ladder, and about the middle of the length of this boom is an axially displaceable sliding sleeve to which one end of a single telescopic boom strut is hinged, the other end thereof at the lower end of the spar the ladder is articulated.
  • the US 4641729 A discloses a step ladder, each with a telescopic boom 52 according to the preamble of claim 1, whose upper ends are hinged left and right at the upper ends of the spars of the Bockleiter, each boom 52 via a respective boom strut approximately in the lower quarter of the height of the Bockleiter is hinged on each spar of the Bockleiter.
  • the two sleeves 86, 88 are arranged axially displaceable on the arm 52, but this is only done to adjust the sleeves 86, 88, then to the sleeves 86, 88 by axially above and below retaining rings 92 on the boom 52 in her to fix axial position.
  • the sleeves 86, 88 are rotatably mounted on the boom 52, but they are not directly and directly connected to each other, but are only loosely on each other, supported by the locking rings 92.
  • the folding and unfolding of the boom 52 on and from the ladder struts 34 takes place solely by the axial sliding of the boom struts 54, 58 in the slide bearing 81, 82, but not by axial displacement of the sleeves 86, 88 on the boom 52.
  • the sleeves 86, 88 are during the folding or unfolding of the ladder through the locking rings 92nd set on the boom 52 in its axial position, but arranged rotatably there.
  • the invention is therefore the object of developing a boom for a ladder, a scaffold or the like so that it provides both a Schwenkwinkelbegrenzung the boom to the outside and inward, which works much more reliable and easier than the known solutions.
  • the invention is characterized by the technical teaching of claim 1.
  • the pivot limiting for the boom consists in particular two aligned superimposed sliding sleeves, which are penetrated by the boom and which are arranged displaceably on the boom, that in each case a boom strut with one end pivotally connected to the sliding sleeve and with its other end pivotally connected to a ladder part.
  • boom struts are now fixed and no longer removable, each attached to a ladder part and are pivotally mounted there.
  • the respective sliding sleeve is in the upper third of the boom, and the boom struts are arranged approximately parallel to the longitudinal axis of the ladder struts of the ladder part.
  • the boom is pivoted slightly outwards by means of a spring or by manual force.
  • the sliding sleeves fall by gravity down and slide along the longitudinal axis down due to gravity on a dead center on the longitudinal axis of the boom.
  • the swung-out position can only be reversed by moving with hand force on the boom struts or the sliding sleeves against the previous displacement movement of the sliding sleeves up to move these sliding sleeves back over the dead center on the boom and this while the boom towards its rest position against to move and lay the ladder.
  • Such a boom assembly can be attached to any ladder, scaffolding, podium, podium ladder and the like.
  • the invention is therefore not limited to the arrangement of a particular ladder or a particular scaffolding.
  • the invention provides several embodiments, and for such a change in length, it is important that the boom is pulled out to achieve its working position or extended in length to a support length, with the support length can adapt to the level of the ground.
  • the boom At rest, the boom is shortened in length so as not to exceed the outer dimensions of the ladder or ladder parts.
  • variable length devices are z.
  • clamping devices that can change a telescopic boom in length or spring clamps or wedge clamps orJnabsteckvorraumen, so that the boom rod consists of two telescoping telescoping tube parts, the length adjustment by inserting a stake in two oppositely aligned holes arranged in the one another reaching pipe parts is achieved.
  • boom In addition to the change in length due to the intermeshing of telescopic tubes, another embodiment provides for the boom to be designed to be foldable or otherwise variable in length.
  • a stepladder 1 which consists of two ladder parts 3, 4, which are pivotally connected to each other at its upper portion by a bearing block 7.
  • a pivot bearing 6 for the attachment of the upper end of a boom 5 is shown.
  • FIG. 1 only a single boom 5 shown, although in practice always on both sides of a ladder or scaffolding such a boom 5 is arranged.
  • the ladder is not only on the two pivotally hinged to each other ladder parts 3, 4, but also on the left and right of the ladder parts 3, 4 splayed out boom fifth
  • the invention provides that the boom 5 passes through two sliding sleeves 13, 14, which are thus arranged displaceably and with a corresponding sliding play on the boom 5.
  • the sliding sleeves 13, 14 are preferably designed as pipe clamps, to which the invention is not limited. It is important that the profile of the sliding sleeves 13, 14 is adapted to the profile of the boom 5. Accordingly, the boom 5 could for example also consist of an oval profile or another profile, and the profile of the sliding sleeves 13, 14 would then adapted to this profile.
  • the sliding sleeves are not only arranged longitudinally displaceable on the boom 5, but also rotatable.
  • the profile shape of the sliding sleeves 13, 14 may be adapted to the profile of the boom 5 accordingly.
  • FIG. 1 shows the swung working position of the boom brace.
  • FIG. 2 shows that the two sliding sleeves 13, 14 in the direction of arrow 19 from a raised rest position to the working position FIG. 1 and 2 were moved automatically and gravitationally, according to FIG. 2 the two sliding sleeves 13, 14 have been moved so far in the direction of arrow 19 in the boom that they have overcome a dead center 20 and create below this dead center on a stop rivet 21.
  • Each sliding sleeve 13, 14 is in this case connected to a pivot bearing 17, 18, on which one end of a cantilever strut 11, 12 is pivotally hinged.
  • the other end of the respective cantilever strut 11, 12 is pivotally connected to a pivot hook 16, which is bent and with his bent end engages in a arranged on the inside of the respective conductor part 3, 4 hinge plate 15.
  • the bend of the swivel hook 16 and its pivotal mounting on both sides - on the boom strut 11, 12 and on the other hand on the hinge plate 15 - has the purpose that in the pivoted state of the boom 5, when this is approximately parallel to the longitudinal axis of the ladder parts 3, 4 directed , the two boom struts 11, 12 are pivoted in front of the ladder parts 3, 4 and therefore create on the outside of the ladder parts 3, 4 and can not get into the space between the ladder parts 3, 4.
  • FIG. 3 shows as a preferred embodiment, an automatic or at least partially automatic swinging out of the boom under spring force.
  • a biasing spring 8 is arranged, with its one end on the pivot bearing 6 and with its other end 9 on the pivotable Part of the boom 5 supporting load.
  • the invention also relates to a solution in which the biasing spring 8 can be omitted. If the biasing spring 8 is omitted, the necessary pivotal movement in the direction of the arrow 25 must be carried out completely by hand.
  • the sliding sleeve 13 shifts from its rest position 13 'in the direction of arrow 22 (here, for example clockwise), while the sliding sleeve from its rest position 14' in the position 14 in the direction of arrow 23 (here counterclockwise, for example) twisted, so that the Turning directions of the two sliding sleeves 13, 14 are opposite to each other.
  • FIG. 4 shows at the same time that in the rest position, the respective cantilever strut 11 ', 12' is aligned exactly parallel to the longitudinal axis of the conductor parts 3, 4.
  • the previously described overcoming the dead center 20 is according to FIG. 1 defined by the angle 24 between the longitudinal axis of the boom strut 11, 12 and the longitudinal axis of the boom 5 is less than 90 degrees to achieve the desired self-locking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Claims (10)

  1. Bras (5) pour une échelle (1) ou un échafaudage ou un équipement similaire, qui est apte à être articulé sur celle-ci ou celui-ci de manière pivotante grâce à une articulation pivotante supérieure (6, 10) et qui est apte à être éloigné, par pivotement, de l'échelle (1) afin de supporter celle-ci latéralement, étant précisé que le bras est apte à être relié à l'échelle (1), au-dessous de l'articulation pivotante (6), grâce aux extrémités d'entretoises de bras (11, 12) dont les autres extrémités sont reliées au bras (5), que les entretoises de bras (11, 12) sont articulées de manière pivotante à la fois sur l'échelle (1) et sur un manchon coulissant (13, 14) et que le manchon coulissant (13, 14) est traversé par le bras (5) et est guidé, mobile axialement, sur celui-ci, qu'il est prévu au moins deux manchons coulissants (13, 14) qui sont superposés dans l'alignement sur le bras (5), qui sont mobiles axialement sur celui-ci et qui sont reliés de manière articulée aux entretoises respectives (11, 12), et que les deux manchons coulissants (13, 14) sont reliés de manière à pouvoir tourner l'un par rapport à l'autre, caractérisé en ce que la liaison des deux manchons coulissants (13, 14) se fait par l'intermédiaire d'une liaison par enclenchement.
  2. Bras (5) selon la revendication 1, caractérisé en ce qu'en position de fonctionnement avec le bras (5) déplié (1) sur le côté de l'échelle (1), les manchons coulissants (13, 14) se trouvent au-dessous d'un point mort (20) qui bloque automatiquement la mobilité axiale des manchons (13, 14), le point mort (20) étant défini grâce au fait que l'angle (24) entre l'axe longitudinal des entretoises de bras (11, 12) et l'axe longitudinal du bras (5) est inférieur à 90 degrés afin d'obtenir le blocage automatique.
  3. Bras (5) selon la revendication 2, caractérisé en ce que dans la position de travail déployée du bras (5), les deux manchons coulissants (13, 14) s'appliquent, au-dessous du point mort, contre un rivet de butée (21) du bras (5).
  4. Bras (5) selon l'une des revendications 1 à 3, caractérisé en ce que la liaison par enclenchement des deux manchons coulissants (13, 14), ou plus, est une liaison à rainure et languette, côté surface cylindrique, qui fait tout le tour.
  5. Bras (5) selon l'une des revendications 1 à 4, caractérisé en ce que les entretoises de bras (11, 12) sont aptes à être fixées de manière fixe et non amovible à l'échelle (1).
  6. Bras (5) selon l'une des revendications 1 à 5, caractérisé en ce qu'il est conçu avec une longueur variable.
  7. Bras (5) selon l'une des revendications 1 à 6, caractérisé en ce que la possibilité de faire pivoter le bras (5) pour l'éloigner de l'échelle (1) est réalisée au moins au début à l'aide d'un ressort contraint (8).
  8. Bras (5) selon l'une au moins des revendications 1 à 7, caractérisé en ce que l'articulation pivotante (6, 10) comporte un palier de pivotement (6) apte à être fixé à un support de palier (7) qui peut former la liaison articulée entre deux éléments d'échelle (3, 4), réglables l'un par rapport à l'autre, de l'échelle (1) conçue comme un escabeau.
  9. Bras (5) selon l'une des revendications 1 à 8, caractérisé en ce que la possibilité d'articulation des entretoises de bras (11, 12) est réalisée sur un montant de l'échelle (1).
  10. Bras (5) selon l'une des revendications 1 à 9, caractérisé en ce que le matériau des manchons coulissants (13, 14) se compose de matière plastique, et le matériau du bras (5) se compose de métal, en particulier d'aluminium.
EP07024363A 2006-12-21 2007-12-15 Bras pour une échelle ou un échafaudage Active EP1936108B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006060730A DE102006060730B4 (de) 2006-12-21 2006-12-21 Ausleger für eine Leiter oder ein Arbeitsgerüst

Publications (3)

Publication Number Publication Date
EP1936108A2 EP1936108A2 (fr) 2008-06-25
EP1936108A3 EP1936108A3 (fr) 2010-01-06
EP1936108B1 true EP1936108B1 (fr) 2011-08-17

Family

ID=39106291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07024363A Active EP1936108B1 (fr) 2006-12-21 2007-12-15 Bras pour une échelle ou un échafaudage

Country Status (4)

Country Link
EP (1) EP1936108B1 (fr)
AT (1) ATE520856T1 (fr)
DE (1) DE102006060730B4 (fr)
ES (1) ES2371667T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201701152D0 (en) * 2017-01-24 2017-03-08 Binks John Vincent Improvements in step ladder stabilisers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997127A (en) * 1959-10-07 1961-08-22 Wojtowicz Michael Stepladder with improved stabilizing legs
US3327810A (en) * 1966-05-10 1967-06-27 Up Right Inc Self-supported ladder
US4641729A (en) * 1985-10-31 1987-02-10 Beck Andrew C Method and apparatus for stabilizing a ladder
US5511632A (en) * 1994-07-25 1996-04-30 Ermis; Jerry J. Ladder with auxiliary support
DE29821356U1 (de) * 1998-11-30 1999-03-04 Laug, Horst, 49809 Lingen Stabilisierungsstützen für Bock- und Anlegeleitern
DE20101777U1 (de) * 2001-01-29 2001-08-09 Laug, Horst, 49809 Lingen Stabilisierungsstütze für Leitern

Also Published As

Publication number Publication date
ES2371667T3 (es) 2012-01-09
DE102006060730A1 (de) 2008-07-03
ATE520856T1 (de) 2011-09-15
EP1936108A3 (fr) 2010-01-06
EP1936108A2 (fr) 2008-06-25
DE102006060730B4 (de) 2009-09-24

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