EP0243765B1 - Disposition d'échelle avec des sections d'échelle extensibles - Google Patents

Disposition d'échelle avec des sections d'échelle extensibles Download PDF

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Publication number
EP0243765B1
EP0243765B1 EP87105390A EP87105390A EP0243765B1 EP 0243765 B1 EP0243765 B1 EP 0243765B1 EP 87105390 A EP87105390 A EP 87105390A EP 87105390 A EP87105390 A EP 87105390A EP 0243765 B1 EP0243765 B1 EP 0243765B1
Authority
EP
European Patent Office
Prior art keywords
ladder
arrangement according
elongate member
rungs
ladder arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87105390A
Other languages
German (de)
English (en)
Other versions
EP0243765A1 (fr
EP0243765B2 (fr
Inventor
Paul Dipl.-Ing. Keller (Fh)
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.)
Iveco Magirus AG
Original Assignee
Iveco Magirus AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25843274&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0243765(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Iveco Magirus AG filed Critical Iveco Magirus AG
Priority to AT87105390T priority Critical patent/ATE57236T1/de
Publication of EP0243765A1 publication Critical patent/EP0243765A1/fr
Application granted granted Critical
Publication of EP0243765B1 publication Critical patent/EP0243765B1/fr
Publication of EP0243765B2 publication Critical patent/EP0243765B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic

Definitions

  • the invention relates to a ladder arrangement with extendable ladder parts, in particular a fire ladder, according to the preamble of claim 1.
  • a ladder arrangement is known in principle, for example from DE-A-33 26 644 according to GB-A-21 43 885.
  • the known extendable ladder arrangements in particular fire ladder ladders, have individual extendable ladder parts with a lower chord and lateral upper chords that can be used as a handrail.
  • the rungs are in the lower flange.
  • the individual conductor parts are arranged one inside the other, the base conductor part enclosing all other conductor parts in cross-section and the first conductor part assigned to the conductor tip located at the innermost position (see, inter alia, DE-A-33 26 644 according to GB-A-21 43 885, DE-C-955 380, DE-A-32 32 299).
  • Such a ladder set with its U-shaped cross-sectional profile in all parts of the ladder has only moderate torsional rigidity.
  • the first ladder section in particular is subject to very large angles of twist due to its low overall height when subjected to lateral loads, for example when accelerating or decelerating the rotary movement with a rescue cage or elevator attached to the ladder tip.
  • Even with smaller work in the rescue cage the reaction forces result in large angles of rotation of the first ladder part, which are undesirable during rescue maneuvers. People in the rescue cage or elevator find this very uncomfortable and feel quite unsafe.
  • the rungs in the lower chord and the lateral (diagonal) struts between the upper and lower chord are designed to be comparatively stable according to the prior art, and in particular the two lateral longitudinal spars of the lower chord are profiled with a comparatively complicated cross section. This results in higher construction weight and higher manufacturing costs. Nevertheless, the torsional rigidity is only moderately achieved due to the overall open U-shaped cross-sectional profile of each of the conductor parts.
  • the object of the invention is, in particular, the weakly dimensioned first ladder part in the generic ladder arrangement while maintaining its usually present accessibility (see rungs 20 according to DE-A-33 26 644 corresponding to GB-A-21 43 885) with simple and effective means to be torsionally rigid.
  • the first i.e.
  • the uppermost or foremost ladder part is designed in cross section as a closed lattice girder, the ascending rungs being fastened to the upper chord.
  • the invention therefore provides for the rungs in the first part no longer to be attached to the lower longitudinal spars, but in the transverse direction on the upper flange.
  • the invention fulfills the boundary conditions according to DIN 14701.
  • the handrail which can preferably be swung out and fixed, on the upper chord in the area of the rungs makes it easier to climb up and down the ladder.
  • the handrail can be positioned manually with the aid of springs or pneumatically, hydraulically, electrically, from below or from above with respect to the first ladder part.
  • An inwardly folded handrail is also possible, which can also be folded up in the form described above when climbing the first ladder part.
  • the preferred embodiment with a handrail that can be swiveled up or down also gives the possibility of a compact design, in particular of a minimal overall height, of the retracted conductor arrangement located on the conductor vehicle, even with conductor arrangements according to the present invention.
  • the torsion-resistant ladder set is designed so that it is also possible to operate the elevator with the handrail folded in.
  • the elements which have absorbed the torsional forces for the open cross-sectional profile of the first conductor part can be omitted on the cross-section of the spar.
  • the bars are welded together horizontally with diagonal struts, thus closing the lattice girder.
  • Another feature is the usability of the longitudinal bars as a water pipe. By optimizing the elements used, the weight of the first conductor part is increased only insignificantly, taking into account the weldability with the welding robot.
  • the beginning and end of the first ladder section also provide intermediate or bridging rungs in order to create a rung transition from the neighboring ladder section, in which the rungs are attached to the lower chord, or in the adjacent rescue cage.
  • the invention fulfills the requirements for a lifting rescue device with regard to payload (e.g. 3-man basket), which have increased significantly in recent years. It creates a safe feeling for people in the rescue cage and in the elevator thanks to significantly lower torsional movements and angles.
  • payload e.g. 3-man basket
  • the tip of the ladder is characterized by only slight vibrations.
  • a particularly compact design results from the integrated water flow in the first ladder section in the longitudinal spars, which are comparatively simply profiled in cross-section.
  • the high torsional stiffness or the large section modulus for the reaction forces is particularly advantageous in monitor operation.
  • a ladder arrangement (1) in the form of a fire ladder with three ladder parts (2, 3) is shown, which have upper straps (5) and lower straps (4) and telescopically inserted in the area of their lower straps (4) and over Gliders (22) are longitudinally guided.
  • the innermost or first conductor part (2) is assigned to the conductor tip (19) and is completely enclosed in cross section by the outer conductor parts (3), with all the upper straps (5) lying in one plane.
  • the two outer ladder parts (3) are basically of the same construction and include asymmetrically profiled side rails (21) in the area of the lower chords (4), which are connected to each other by transverse ladder rungs (16), as well as differently profiled lateral struts in the area of the top chords (5) Longitudinal bars (20), which are firmly connected to the profiled longitudinal bars (21) of the lower flange (4) via lateral diagonal struts (6).
  • the outer conductor parts (3) form an open U-shaped cross-sectional profile.
  • the first conductor part (2) assigned to the conductor tip (19) has a closed cross-sectional profile.
  • simply profiled lower longitudinal spars (23) are provided, which are connected to one another by diagonal struts (15).
  • Longitudinal bars (23) and diagonal struts (6) of the first ladder part (2) roughly correspond to the other ladder parts (3), but are of comparatively small dimensions.
  • the essential feature of the invention is the transverse connection between the upper longitudinal bars (20) of the first ladder part (2) Arrangement of the rungs (7) in the top chord (5).
  • the climbing rungs (7) significantly increase the torsional rigidity of the first ladder part (2), supported by lower longitudinal bars (14) in the area of the longitudinal bars (23) or sheets of the lower flange.
  • the longitudinal bars (14) have a closed square profile and are arranged in portrait format. Due to the closed square profile of the longitudinal spars (14), they can be used as water pipes in the area of the first ladder part (2).
  • the belt (10) in the manner of a parallelogram according to arrow B in the longitudinal direction of the first ladder part ( 2) can be pivoted, specifically because of a power drive (13), for example a piston-cylinder arrangement in a hydraulically operated unit which is articulated between connecting struts (24) and the base of the first conductor part (2).
  • the power drive (13) can have a damping device.
  • the pivoting of the handrail can also be carried out by hand supported by springs.
  • a lock (18) is also expediently provided, which secures the end positions of the belt (10).
  • FIG. 2 it is shown that the present invention is suitable even when the ladder arrangement (1) is operated with an elevator (9) despite the existing belting (10).
  • the elevator (9) runs with the belt (10) swung in, in each case on the upper belts (5) of the individual conductor parts (2 or 3).
  • a strap (10) advantageously has connecting struts (24) with a height (h) of 280 mm.
  • the preferred clear width (b) between the swung-up straps (10) is at least 450 mm (cf. FIG. 4).

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

Claims (15)

1. Structure d'échelle (1) avec des parties d'échelle (2, 3) susceptibles de coulisser, notamment échelle de pompiers, structure dans laquelle les différentes parties (2, 3) de l'échelle comportent des membrures inférieures (4) et des membrures supérieures (5) qui sont solidement reliées entre elles par des étrésillons (6), structure caractérisée en ce que la première partie (2) de l'échelle, c'est-à-dire celle qui est placée le plus haut ou le plus en avant lorsque la structure (1) est déployée, a, en section transversale, la forme d'une poutre en treillis fermée, des échelons (7) étant fixés sur la membrure supérieure (5) de cette première partie (2) de l'échelle, et cette membrure supérieure (5) de cette première partie (2) de l'échelle comportant au moins une membrure rabattable (10), susceptible d'être relevée, et jouant le rôle de main-courante.
2. Structure d'échelle selon la revendication 1, caractérisée en ce que l'ensemble des membrures supérieures (5), y compris celle de la première partie d'échelle (2), est prévu pour servir de rails de support d'un ascenseur (9) (figure 2).
3. Structure d'échelle selon la revendication 1 ou la revendication 2, caractérisée en ce que la membrure rabattable (10) comporte un axe de pivotement (11) en direction longitudinale de la première partie (2) de l'échelle et peut être basculée d'environ 90° vers le haut et l'extérieur dans la position de main-courante à partir d'une position escamotée essentiellement parallèle aux échelons (7) (figure 1).
4. Structure d'échelle selon la revendication 1 ou la revendication 2, caractérisée en ce que la membrure rabattable (10) comporte plusieurs axes de pivotement (12) parallèles aux échelons (7) et peut pivoter dans la position relevée de main-courante à partir d'une position escamotée au voisinage des échelons (figure 3).
5. Structure d'échelle selon une des revendications 1 à 4, caractérisée en ce que la membrure rabattable (10) susceptible d'être relevée est susceptible d'être bloquée tout au moins dans sa position relevée de main-courante.
6. Structure d'échelle selon une des revendications 1 à 5, caractérisée en ce que la membrure rabattable (10) susceptible d'être relevée peut être relevée manuellement avec l'aide de ressorts.
7. Structure d'échelle selon une des revendications 1 à 5, caractérisée en ce que la membrure rabattable (10) susceptible d'être relevée peut pivoter sous l'action d'un entraînement mécanique (13).
8. Structure d'échelle selon la revendication 7, caractérisée en ce que l'entraînement mécanique (13) comporte un dispositif d'amortissement.
9. Structure d'échelle selon la revendication 7 ou la revendication 8, caractérisée en ce que l'entraînement mécanique (13) est susceptible d'être actionné par le mouvement de coulissement de la première partie (2) de l'échelle.
10. Structure d'échelle selon une des revendications 8 et 9, caractérisée en ce que l'entraînement mécanique (13) est susceptible d'être commandé à distance à partir de la nacelle de sauvetage ou du poste principal de commande.
11. Structure d'échelle selon une des revendications 1 à 10, caractérisée en ce que la membrure inférieure (4) de la première partie (2) de l'échelle comporte deux longerons longitudinaux latéraux (14) qui sont solidement reliés ensemble par des étrésillons diagonaux (15).
12. Structure d'échelle selon une des revendications 1 à 11, caractérisée en ce que les longerons longitudinaux (14) ont un profil de section transversale fermé.
13. Structure d'échelle selon une des revendications 1 à 12, caractérisée en ce que les longerons longitudinaux (14) sont réalisés sous la forme de profilés rectangulaires à quatre pans.
14. Structure d'échelle selon une des revendications 1 à 13, caractérisée en ce que les longerons longitudinaux (14) sont réalisés sous la forme d'un tube de canalisation d'eau.
15. Structure d'échelle selon une des revendications 1 à 14, caractérisée en ce qu'à l'extrémité longitudinale de la première partie (2) de l'échelle des échelons de liaison (8) sont disposés, entre la membrure supérieure et la membrure inférieure, sur les étrésillons diagonaux latéraux (6) de cette première partie (2) de l'échelle.
EP87105390A 1986-04-26 1987-04-11 Disposition d'échelle avec des sections d'échelle extensibles Expired - Lifetime EP0243765B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105390T ATE57236T1 (de) 1986-04-26 1987-04-11 Leiteranordnung mit ausschiebbaren leiterteilen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3614266 1986-04-26
DE3614266 1986-04-26
DE3625296 1986-07-25
DE19863625296 DE3625296A1 (de) 1986-04-26 1986-07-25 Leiteranordnung mit ausschiebbaren leiterteilen

Publications (3)

Publication Number Publication Date
EP0243765A1 EP0243765A1 (fr) 1987-11-04
EP0243765B1 true EP0243765B1 (fr) 1990-10-03
EP0243765B2 EP0243765B2 (fr) 1997-06-18

Family

ID=25843274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105390A Expired - Lifetime EP0243765B2 (fr) 1986-04-26 1987-04-11 Disposition d'échelle avec des sections d'échelle extensibles

Country Status (3)

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EP (1) EP0243765B2 (fr)
JP (1) JPH0826738B2 (fr)
DE (2) DE3625296A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738886A1 (de) * 1997-09-05 1999-03-11 Iveco Magirus Leitersatz für Feuerwehrleitern
ITVR20050159A1 (it) * 2005-12-28 2007-06-29 C T E Spa Pacco scale particolarmente conformato e carrello ad esso accoppiato
FI122068B (fi) 2009-02-26 2011-08-15 Bronto Skylift Oy Ab Henkilönostimen tikkaat, henkilönostin sekä menetelmä henkilönostimen tikkaiden käyttämiseksi
IL215088A0 (en) 2011-09-11 2011-10-31 Gilad Omri Telescopic ladder and locking mechanism thereof
CN103670261B (zh) * 2013-12-02 2016-06-29 长沙中联消防机械有限公司 一种云梯及消防云梯车
CN117897547B (zh) * 2022-03-23 2026-06-12 森田控股股份有限公司 云梯和具备该云梯的车辆

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528178A (fr) * 1917-10-03 1921-11-08 Georges Edmond Bottin Échelle-pilone télescopique
US3083784A (en) * 1961-07-26 1963-04-02 Budd Co Movable stair assembly
DE7120360U (de) * 1971-05-26 1971-09-02 Klaas T Als leiter oder materialaufzug verwendbare transportable vorrichtung
DE2234194B2 (de) * 1972-07-12 1976-11-25 Kirsten, Erhard, 5509 Kell Drehleiter fuer feuerwehrfahrzeuge o.dgl.
DE2328990C3 (de) * 1973-06-07 1980-05-14 Magirus-Deutz Ag, 7900 Ulm Halterung für einen Fahrkorb
DE3229533A1 (de) * 1982-08-07 1984-02-09 Rudat GmbH, 5620 Velbert Leiter zur unterbringung in der fahrerkabine bei einer einschienenhaengebahn im bergbau
DE3326644A1 (de) * 1983-07-23 1985-01-31 Iveco Magirus AG, 7900 Ulm Feuerwehrleiter mit ausschiebbaren leiterteilen

Also Published As

Publication number Publication date
DE3625296A1 (de) 1987-10-29
EP0243765A1 (fr) 1987-11-04
JPH0826738B2 (ja) 1996-03-21
JPS62260986A (ja) 1987-11-13
EP0243765B2 (fr) 1997-06-18
DE3765297D1 (de) 1990-11-08

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