EP3252261B1 - Barre transversale pour échelle simple et échelles en plusieurs parties - Google Patents

Barre transversale pour échelle simple et échelles en plusieurs parties Download PDF

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Publication number
EP3252261B1
EP3252261B1 EP17000657.1A EP17000657A EP3252261B1 EP 3252261 B1 EP3252261 B1 EP 3252261B1 EP 17000657 A EP17000657 A EP 17000657A EP 3252261 B1 EP3252261 B1 EP 3252261B1
Authority
EP
European Patent Office
Prior art keywords
traverse
ladder
legs
joint
truss
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
EP17000657.1A
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German (de)
English (en)
Other versions
EP3252261A1 (fr
Inventor
Volker Büchele
Reinhard Dentler
Günther Hartmann
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.)
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Publication of EP3252261A1 publication Critical patent/EP3252261A1/fr
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Publication of EP3252261B1 publication Critical patent/EP3252261B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/46—Non-skid equipment
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects

Definitions

  • the invention relates to a foldable traverse according to the preamble of claim 1.
  • a general purpose ladder consists of a top, middle and bottom part.
  • the protruding at an angle from the middle part lower part has at the Leiterfuß a traverse stabilizing device. This was according to the requirements of the previous standard due to the total length of the conductor, which results in the extended state, prescribed.
  • the middle part and the upper part arranged displaceably on it has S-shaped hooks on the bars. These are hung at the desired height in the rung of the underlying ladder section to fix the extended ladder.
  • guide fittings on the lower and middle sections serve to guide the respective other ladder section, hold the ladder sections together and give them the desired stability.
  • the ladder top of the general purpose ladder can be removed to use as a one-piece ladder.
  • the S-shaped hook is unhooked and the upper part of the ladder pulled out over the fitting of the middle part.
  • the adaptation of the ladder standard in this case prescribes, if the detachable ladder section exceeds a length of three meters, to equip it with a stabilizing device.
  • the stabilizer must not interfere with the functions of the ladder and cause any risks of use.
  • Such a risk of use exists, for example, if a stabilizer is already attached to the ladder beginning of the detachable ladder section and obstructs the user's ascent to the utility ladder.
  • the stabilizer may be attached to the top of the detachable ladder section, since the user is not impaired in the ascent.
  • the well-known, fixed at the end of the ladder trusses protrude beyond the ladder geometry.
  • the truss legs are rotatably mounted at the lower end of the spars in the range of simple pivot axes.
  • the crossbeams can be rotated by 90 ° until they snap into place and stand in the folded position vertically in the area between the crossbeams and indeed in the plane in front of the spars next to each other.
  • the latching takes place by means of a spring on stop rivets in the spar and a milled groove on the mounting profile.
  • the packing size that is to say the entire dimension of an assembled conductor, is very large.
  • a simple removal, for example from a holder of a fire truck is thus no longer guaranteed.
  • the traverse must be mounted by the user and disassembled for transport again, which involves a high amount of time for assembly and disassembly.
  • the invention is therefore an object of the invention to provide a folding Traverse available, which can be used both in simple and multi-part ladders, without that they claimed on the outer geometry of the ladder additional space, especially not in the folded state across the width and clear width of the spars stands out.
  • the invention solves this problem by the feature of claim 1.
  • the foldable cross member according to the invention has two elongated crossbar legs, which are each slidably received in the longitudinal direction in a pivotable receiving profile at the end of a spar of the ladder and connected to each other via a common pivot point.
  • the common pivot point is located in each position of the truss legs midway between the spars and has no connection to the parts of the ladder. While at the DE 10 2007 061 357 B1 two spaced apart, ladder-fixed, central pivot joints were provided for the central pivot bearing of Traversenbeine, the invention dispenses with two central conductor-fixed pivot bearing, but uses a single free pivot bearing without connection to parts of the ladder for central pivotal mounting of the truss legs.
  • the invention therefore consists in that the crossbar legs are connected together in their end connection area via a common, ladder-free pivot point.
  • the hinged traverse can be pivoted into a position in the interior of the ladder, and in the extension or Ausklappfall the two pivotally arranged traverse legs are swung in a straight line and locked there.
  • This has the advantage that the truss legs are arranged in the pivoted state in the interior between the spars and protrude neither in depth nor in width on the spars out.
  • the folding truss legs are fastened to the ladder rails by means of receiving profiles.
  • These receiving profiles consist of two joint parts, which are preferably made of plastic, for example PA6 GF30.
  • the invention is not limited to this, it is also possible to use aluminum diecasting or other materials.
  • the upper joint part is constructed as a plug-in part to positively transfer the emerging forces on the ladder rail, in which it is plugged.
  • the upper joint part can also be material integrally formed on the conductor, or be connected by a screw connection to the ladder struts.
  • the lower hinge part has a receiving opening for receiving the truss leg.
  • PA6 GF30 is also preferably chosen as the material, since the aluminum truss profile is guided in the receiving opening and by the combination of material combination aluminum / plastic good sliding properties arise.
  • the lower hinge part has a recess for the spar, which is located off-center to the ladder to ensure the folding mechanism. Otherwise, the traverse would be pending on the rung when folding.
  • the lower hinge part must be replaced by the folding mechanism of the crossbar profiles fold in so far as to ensure removal of the ladder section.
  • the upper and lower joint part is connected to one another via a screw, wherein the screw axis forms the pivot axis of the two joint parts, which can be pivoted against each other on the said axis.
  • both the screw head, and the lock nut is sunk in order to ensure a decrease in the conductor part and not to collide with the removal of the conductor part with the guide fittings.
  • the composite joint is inserted into the spar and screwed with a screw or riveted with a rivet.
  • a simple installation is guaranteed.
  • the crossbeam is also designed as a male part and designed so that it can be used for both sides of the ladder.
  • cast aluminum is the preferred material.
  • a stop is attached to the upper edge, which rests on a contact area of the second crossbar joint and thus determines the final position of the crossbar legs when unfolding.
  • the second transverse joint also has such a stop, which rests on the contact area of the first traverse.
  • the truss legs can only be folded up to this position and are in this position horizontal.
  • the truss joint is received in a hollow truss profile, which is pushed into the receiving profiles on the spars.
  • a hollow truss profile is used.
  • the invention is not limited thereto.
  • the truss leg is integrally attached to the ladder.
  • a truss foot On the truss profile, a truss foot, hereafter called foot, is attached to the opposite side of the truss joint.
  • the material PVC Sh.A70-90 is preferred, in order to ensure a secure position of the ladder and to prevent slippage of the ladder. It is a mirror image designed to use a one-piece laying ladder on both sides.
  • the bearing force FL acts on the axis which connects the two traverse joints. If the traverse is considered as an overall system and all tolerances of the components are respected, act on the axis only small forces, as they are previously intercepted by the two stops.
  • FIG. 1 shows a ladder 1, which consists of two bars 2 and arranged therebetween rungs 3.
  • the spars have a depth 51.
  • the ladder has at its bottom end 13 on two receiving profiles 7 and 8, which are attached to the spars 2.
  • the receiving profiles 7 and 8 consist of an upper joint part 14, a pivotally mounted thereto lower joint part 15, which has a receiving opening 31 open on both sides.
  • a cross-member profile 60, 61 and an inserted therein Traverse articulated 5 and 6 is added in each case.
  • the truss joints 65, 66 which consist of transverse joints 5, 6 and transverse profile 60, 61, are thus connected to the ladder.
  • the two Traverse legs 65, 66 form the traverse 4, which rests with the lateral feet 39 on the ground and the conductor 1 stabilized.
  • the two truss joints 5 and 6 are connected via a pivot point 9, which is located centrally between the bars 2, pivotally connected to each other.
  • the cross joints 5 and 6 are located in FIG. 1 in their unfolded position and have between them an opening angle 16 of about 180 °.
  • the crossbeam 5 has at its end projecting into the intermediate region of the spars 2 a material integral stop 33, which rests on the abutment portion 47 of the other crossbar joint 6.
  • the abutment region 47 of the traverse joint 6 is located between the central pivot point 9 and the left-side spar.
  • the contact region 47 of the transverse joint 5 is located between the central pivot point 9 and the right-hand spar.
  • FIG. 2 shows the hinged cross-piece according to the invention in the folded state.
  • the truss legs 5 and 6 protrude into the interior of the ladder.
  • all components are included within the conductor 1, ie the depth of the conductor 1 with the cross member 4 is determined by the depth 51 of the spars, since no component protrudes beyond the dimension of the spars 2.
  • the crossbar profiles 60, 61 are pushed up to their plugged feet 39 through the receiving opening 31 of the receiving profiles 7, 8 and project maximally into the interior of the ladder 1. In this position, there is an opening angle 17 of less than 45 ° between the crossbeams 5, 6 , The pivot point 9 of the transverse joints 5, 6 is located above the first rung 3. The stops 33 are no longer in this position in engagement with the abutment areas 47 of the other traverse joint.
  • FIG. 3 shows a ladder designed as an extendable ladder 1, which consists of a lower part 26, a middle part 27 and an upper part 28.
  • the conductor 1 is connected to the bottom end 38 of the lower part 26 on the ground.
  • the middle part 27 is held by guide fittings 24 at the upper end 36 of the lower part 26.
  • the middle part 27 in turn has a guide fitting 24 with which the upper part 28 is held.
  • the cross member 4 is attached at the upper end 37 of the conductor part 28, the cross member 4 according to the invention is attached. In the example shown here, the cross member 4 is inserted into the spars 2 of the upper part 28.
  • FIG. 4 shows the top 28 of the ladder in the disassembled state.
  • the upper end 37 is rotated in the direction of the ground and is on the feet 39 of the cross member 4 on this.
  • the Traverse 4 can now be unfolded to give the dismantled and thus single Oberteil 28 the necessary stability.
  • FIG. 5 shows the ladder FIG. 3 in plan view.
  • the cross member 4 according to the invention is attached to the upper part 28.
  • the upper part 28 forms in plan view the outermost conductor element of the three-part conductor 1, while the middle part 27 is arranged between the upper part 28 and the lower part 26.
  • the lower part 26 holds on the guide fittings 24, the middle part 27 and the middle part 27 via the guide fittings 34, the upper part.
  • the Parts 26-28 are moved against each other and fixed in the desired position by not shown S-shaped hooks.
  • the lower part 26 as the widest conductor part defined with its bars 2 together with the guide fittings 24 and 34, the outer geometry 32 of the ladder 1. Within the outer geometry are the three ladder parts 26, 27, 28 with the guide fittings 24, 34 and the folded cross member 4 with its middle pivot point 9.
  • a rigid cross member 25 is attached to the bottom end 38 of the lower part 26, which rests on the feet 40 on the ground.
  • FIG. 6 shows a stepladder 1 consisting of a conductor part 10a and an angle thereof pending ladder part 10b.
  • the conductor parts 10a and 10b are connected to their upper ends.
  • a webbing 42 prevents further unfolding of the ladder parts.
  • a further ladder part 11 is slidably received on the guide fittings 24, which can be fixed via not shown S-shaped hooks on the ladder part 10a.
  • the straight ladder part 11 has at its upper end 41 a traverse 4 according to the invention, which is in the folded state.
  • the Traverse 4 has the truss legs 65 and 66 and the feet 39th
  • the ladder portion 11 can be detached from the ladder portion 10a to use as a stand-alone ladder. Such a ladder is in FIG. 4 shown and described.
  • FIG. 7 shows the effect of the individual forces on the traverse 4th side of the ladder, the total force 18, which acts on the spars 2 in the forces Fges / 2 and Fges / 2 divides, on the traverse 4. This results in the feet 39 of the traverse 4 respectively the forces 22 and 23 which counteract the total force 18 act.
  • the cross-joints are pivotally connected to each other via the screw 64.
  • the attached at the end of the spars receiving profiles 7, 8 have a screw 63, with which the upper hinge part 14 and the lower hinge part 15 of the respective receiving profile connects and forms the pivot axis between these parts. Since the respective truss leg 65, 66 is received in the lower joint part 15, the screw 63 also forms the pivot axis for a truss leg.
  • the bearing force 19 acts on the screw 63.
  • FIG. 8 shows the effect of half the weight of 54 on a truss joint 5.
  • the truss steering 5 has a hole 48 into which a bolt or the like is received to form the central pivot point 9 as a rotation axis.
  • the truss joint 5 is held by the receiving profile 7.
  • FIG. 9 shows a graphic representation of the traverse joint FIG. 7 acting forces.
  • the force 22 as a support force on the crossbeam joint 5 acts in the contact point 52 of the foot 39 and is removed with the length 20 from the point of application of the force 54.
  • the force 43 as a supporting force on the support point 53 of the stopper 33 is removed with the length 21 of the applied force 54.
  • Between the support point 52 of the foot 39 and the support point 53 of the stopper 33 is the Length 44.
  • the effect of the force 54 on the support points 52, 53 thus results from the ratio of the lengths 20 and 21.
  • FIG. 10 shows a truss joint 5 which has a receptacle 49 for insertion into the truss profile 60, 61 has.
  • the abutment region 47 is arranged, on which the abutment 33 of the other, not shown, transverse joint 6 comes to rest.
  • the crossbeam 5 has a stop 33 which rests on the abutment region of the other, not shown, transverse joint 6.
  • FIG. 11 shows the upper hinge part 14, which may preferably be made of plastic as well as of die-cast aluminum, steel or other material.
  • the upper hinge part is inserted in the direction of arrow 29 in the hollow ladder spar 2 to the stop 55.
  • the joint part 14 has integrally formed on the stop guides 57, each with a bore 56.
  • the bores 56 define an axis 30 in which a bolt, not shown, can be received, which rotatably supports the lower joint part 15 between the guides.
  • the joint part struts 45 which intersect in the middle.
  • a bore 46 which serves to fix the joint part 14 in a spar.
  • Such a fixation is for example possible by a plugged rod or a screw.
  • FIG. 12 shows the lower hinge part 15.
  • the lower hinge part 15 also has a guide 58 with a bore 59 for receiving the bolt, not shown. Through the bore 59 also extends the axis 30, which forms the pivot axis of the composite joint in the assembled state of the two joint parts 14, 15.
  • the lower joint part 14 is added below a spar and can be pivoted about the horizontal axis 30.
  • the lower hinge part 15 has a receiving opening 31 for receiving a traverse joint.
  • FIG. 13 shows the truss profile 60, 61 in the direction of arrow 62 of the foot 39 is plugged.
  • the foot 39 opposite the crossbar joint 5, 6 is inserted and fixed by screws.
  • FIG. 14 shows the foot 39 which in the direction of arrow 62 on the truss profile after FIG. 13 is plugged ..

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Claims (9)

  1. Traverse pliable (4) pour la stabilisation d'une échelle (1), avec deux jambes de traverse allongées (65, 66), lesquelles sont reçues en coulissement longitudinal respectivement dans un profil de réception pivotant (7, 8) à l'extrémité d'un montant (2) de l'échelle (1), et présentent des paliers pivotants dans l'espace intermédiaire entre les montants (2, 2) dans leur zone de liaison côté extrémité, dans laquelle les jambes de traverse (65, 66) sont reliées l'une à l'autre dans leur zone de liaison côté extrémité par le biais d'un point de pivotement (9) commun, hors échelle, dans laquelle chacune des jambes de traverse (65, 66) est réalisée en deux parties et se compose de respectivement un profil de traverse (60, 61) et d'une articulation de traverse (5, 6) reçue dans celui-ci, dans laquelle les articulations de traverse (5, 6) forment ensemble le centre de gravité, caractérisée en ce que, au niveau de l'arête supérieure de chaque articulation de traverse (5, 6), une butée (33) est montée, qui, à l'état déployé de la traverse (4), s'appuie sur une zone d'appui (47) de l'autre articulation de traverse (5, 6) respective et limite ainsi la position d'extension des jambes de traverse déployées (5, 6).
  2. Traverse (4) selon la revendication 1, caractérisée en ce que les deux articulations de traverse (5, 6) sont reliées l'une à l'autre de manière pivotante par le biais du point de pivotement (9).
  3. Traverse (4) selon l'une quelconque des revendications 1 à 2, caractérisée en ce que le profil de réception côté montant (7, 8) est réalisé en deux parties et se compose de parties d'articulation supérieure et inférieure (14, 15), qui sont reliées l'une à l'autre de manière pivotante par le biais d'une vis (63).
  4. Traverse (4) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la partie d'articulation inférieure (15) du profil de réception côté montant (7, 8) présente une ouverture de réception (31) pour la réception de la jambe de traverse (65, 66) maintenue en coulissement longitudinal dans celle-ci.
  5. Traverse (4) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la partie d'articulation supérieure (14) peut être enfichée dans le montant (2) de l'échelle (1).
  6. Traverse (4) selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les jambes de traverse (65, 66) peuvent être pivotées vers l'intérieur à l'état pivoté vers l'intérieur dans l'espace intérieur entre les montants (2, 2) de l'échelle.
  7. Traverse (4) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les jambes de traverse (65, 66) forment à l'état pivoté vers l'extérieur une position d'extension horizontale et que les articulations de traverse présentent dans cette position un angle d'ouverture (16) de 180°.
  8. Traverse (4) selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le coulissement longitudinal des jambes de traverse (65, 66) est limité à l'état replié par la butée des pieds (39) des jambes de traverse (65, 66) au niveau du profil de réception côté montant (7, 8).
  9. Traverse (4) selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'elle ne dépasse pas de la géométrie extérieure (32) de l'échelle (1) de par sa construction à l'état replié.
EP17000657.1A 2016-06-03 2017-04-19 Barre transversale pour échelle simple et échelles en plusieurs parties Active EP3252261B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016006634.2A DE102016006634A1 (de) 2016-06-03 2016-06-03 Klappbare Traverse für Anlegeleitern und mehrteilige Leitern

Publications (2)

Publication Number Publication Date
EP3252261A1 EP3252261A1 (fr) 2017-12-06
EP3252261B1 true EP3252261B1 (fr) 2019-02-20

Family

ID=58638643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17000657.1A Active EP3252261B1 (fr) 2016-06-03 2017-04-19 Barre transversale pour échelle simple et échelles en plusieurs parties

Country Status (2)

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EP (1) EP3252261B1 (fr)
DE (1) DE102016006634A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US625066A (en) * 1899-05-16 Base attachment for ladders
GB190909014A (en) 1909-04-16 1910-02-10 Robert Harding Rains Improved Ladder Support.
US3086612A (en) * 1962-06-08 1963-04-23 Donald E Mckinley Adjustable ladder base
US6866119B2 (en) * 2003-02-11 2005-03-15 Edward Zheng Ladder with side support enhancement
DE102007061357B3 (de) 2007-12-14 2009-02-26 Klaus-Peter Laube Geländeausgleich für Leitern und Gerüstständer
US8944214B2 (en) * 2012-05-04 2015-02-03 Gary Landon Worthington Automatic locking system for a self-adjustable leveling ladder
DE202014100469U1 (de) 2014-02-04 2014-02-18 Lorenz Hasenbach Gmbh & Co. Kg Kippsicherung für Leitern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
DE102016006634A1 (de) 2017-12-07
EP3252261A1 (fr) 2017-12-06

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