EP0243765B1 - Ladder arrangement with extendable ladder sections - Google Patents

Ladder arrangement with extendable ladder sections 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
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EP
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Prior art keywords
ladder
arrangement according
elongate member
rungs
ladder arrangement
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EP87105390A
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German (de)
French (fr)
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EP0243765A1 (en
EP0243765B2 (en
Inventor
Paul Dipl.-Ing. Keller (Fh)
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Iveco Magirus AG
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Iveco Magirus AG
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Priority to AT87105390T priority Critical patent/ATE57236T1/en
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    • 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)

Description

Die Erfindung betrifft eine Leiteranordnung mit ausschiebbaren Leiterteilen, insbesondere eine Feuerwehrleiter, gemäß Oberbegriff des Anspruchs 1. Eine derartige Leiteranordnung ist beispielsweise aus der DE-A-33 26 644 entsprechend GB-A-21 43 885 grundsätzlich bekannt.The invention relates to a ladder arrangement with extendable ladder parts, in particular a fire ladder, according to the preamble of claim 1. Such a ladder arrangement is known in principle, for example from DE-A-33 26 644 according to GB-A-21 43 885.

Die bekannten verlängerbaren Leiteranordnungen, insbesondere Feuerwehrleitern, besitzen einzelne ausschiebbare Leiterteile mit Untergurt und seitlichen Obergurten, die als Handlauf verwendet werden können. Die Sprossen befinden sich im Untergurt. Im nichtverlängerten Zustand der Leiteranordnung sind die einzelnen Leiterteile ineinander angeordnet, wobei das Basisleiterteil sämtliche anderen Leiterteile querschnittsmäßig umschließt und das der Leiterspitze zugeordnete erste Leiterteil an innerster Stelle gelegen ist (vgl. u.a. DE-A-33 26 644 entsprechend GB-A-21 43 885, DE-C-955 380, DE-A-32 32 299).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. In the non-extended state of the conductor arrangement, 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).

Ein derartiger Hubleitersatz mit seinem U-förmigen Querschnittsprofil in allen Leiterteilen besitzt nur mäßige Torsionssteifigkeit. Besonders das erste Leiterteil unterliegt durch seine niedrige Bauhöhe bei seitlicher Beanspruchung, beispielsweise bei Beschleunigung bzw. Verzögerung der Drehbewegung mit eingehängtem Rettungskorb oder Fahrstuhl an der Leiterspitze, sehr großen Verdrehwinkeln. Selbst bei kleineren Arbeiten im Rettungskorb ergeben sich durch die Reaktionskräfte große Verdrehwinkel des ersten Leiterteils, welche bei Rettungsmanövern unerwünscht sind. Personen im Rettungskorb oder Fahrstuhl empfinden dies als sehr unangenehm und fühlen sich recht unsicher. Um die Torsionssteifigkeit zu erhöhen, werden nach dem Stand der Technik die Sprossen im Untergurt und die seitlichen zwischen Ober- und Untergurt gelegenen (Diagonal) -Streben vergleichsweise stabil gestaltet und insbesondere die beiden seitlichen Längsholme des Untergurts querschnittsmäßig vergleichsweise kompliziert profiliert. Dadurch entstehen höheres Baugewicht und höhere Fertigungskosten. Gleichwohl ist die Torsionssteifigkeit aufgrund des insgesamt offenen U-förmigen Querschnittsprofils jedes der Leiterteile nur mäßig realisiert.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. In order to increase the torsional rigidity, 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.

Aufgabe der Erfindung ist es, bei der gattungsgemäßen Leiteranordnung unter Beibehaltung von deren üblicherweise vorhandener Begehbarkeit (siehe Sprossen 20 gemäß der DE-A-33 26 644 entsprechend GB-A-21 43 885) mit einfachen und wirksamen Mitteln das schwach dimensionierte erste Leiterteil besonders torsionssteif auszubilden.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.

Gelöst wird die der Erfindung zugrundeliegende Aufgabe durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Ansprüchen 2 bis 15.The object on which the invention is based is achieved by the features specified in the characterizing part of claim 1. Advantageous refinements of the invention result from claims 2 to 15.

Erfindungsgemäß ist das erste, d.h. im ausgeschobenen Zustand der Leiteranordnung oberste bzw. vorderste Leiterteil im Querschnitt als geschlossener Gitterträger ausgebildet, wobei die Aufstiegssprossen am Obergurt befestigt sind. Die Erfindung sieht also vor, die Sprossen im ersten Teil nicht mehr an den unteren Längsholmen zu befestigen, sondern in Querrichtung am Obergurt. Trotz des geschlossenen Gitterträgerprofils erfüllt die Erfindung die Randbedingungen nach DIN 14701. Der, vorzugsweise ausschwenkbare und fixierbare, Handlauf am Obergurt im Bereich der Sprossen erleichtert das Hinauf- und Herabsteigen auf der Leiter. Der Handlauf kann manuell unterstützt von Federn oder pneumatisch, hydraulisch, elektrisch, von unten oder von oben bezüglich des ersten Leiterteils in Stellung gebracht werden. Auch ist ein nach innen geklappter Handlauf möglich, welcher beim Besteigen des ersten Leiterteils ebenfalls in der vorher beschriebenen Form hochgeklappt werden kann. Die bevorzugte Ausführung mit hoch- bzw. herunterschwenkbarem Handlauf ergibt auch bei Leiteranordnungen gemäß der vorliegenden Erfindung grundsätzlich die Möglichkeit einer kompakten Ausbildung, insbesondere einer minimalen Bauhöhe der eingezogenen, am Leiterfahrzeug befindlichen Leiteranordnung. Der torsionssteife Leitersatz ist so ausgestaltet, daß auch ein Fahrstuhlbetrieb bei eingeklapptem Handlauf möglich ist.According to the invention, the first, i.e. When the ladder arrangement is pushed out, 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. Despite the closed lattice girder profile, 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.

Am Holmquerschnitt können dank der Erfindung die Elemente entfallen, welche für das offene Querschnittsprofil des ersten Leiterteils die Torsionskräfte aufgenommen haben. Dafür werden die Holme in der Horizontalen mit diagonalen Streben zusammengeschweißt und somit der Gitterträger geschlossen. Ein weiteres Merkmal ist auch die Verwendbarkeit der Längsholme als Wasserführungsrohr. Durch Optimierung der verwendeten Elemente wird das Gewicht des ersten Leiterteils nur unwesentlich erhöht unter Berücksichtigung der Schweißbarkeit mit dem Schweißroboter. Anfang und Ende des ersten Leiterteils sehen zusätzlich Zwischen- oder Überbrückungssprossen vor, um einen Sprossenübergang vom benachbarten Leiterteil, bei dem die Aufstiegssprossen am Untergurt befestigt sind, bzw. beim benachbarten Rettungskorb herzustellen. Durch die Erfindung werden die in den letzten Jahren sehr stark angestiegenen Anforderungen an ein Hubrettungsgerät bezüglich Nutzlast (z.B. 3-Mann-Korb) erfüllt. Sie schafft ein sicheres Gefühl der Personen im Rettungskorb und im Fahrstuhl durch wesentlich geringere Torsionsbewegungen und Torsionswinkel. Die Leiterspitze zeichnet sich nur durch geringe Schwingbewegungen aus. Ein besonders kompakter Aufbau ergibt sich durch die integrierte Wasserführung im ersten Leiterteil in den Längsholmen, die vergleichsweise einfach querschnittsmäßig profiliert sind. Die große Torsionssteifigkeit bzw. das große Widerstandsmoment für die Reaktionskräfte ist insbesondere bei Monitorbetrieb von Vorteil.Thanks to the invention, 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. For this, 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. 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.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügte Zeichnung näher erläutert; es zeigen:

  • Fig. 1 eine Leiteranordnung gemäß der Erfindung in einem schematischen Querschnitt,
  • Fig. 2 eine andere Leiteranordnung ähnlich der Fig. 1,
  • Fig. 3 der obere Teil der Leiteranordnung gemäß Fig. 2 in schematischer Seitenansicht, und
  • Fig. 4 eine Einzelheit der Fig. 2 in vergrößerter Ansicht.
The invention is explained in more detail below on the basis of exemplary embodiments with reference to the accompanying drawing; show it:
  • 1 shows a conductor arrangement according to the invention in a schematic cross section,
  • 2 shows another conductor arrangement similar to FIG. 1,
  • 3 shows the upper part of the conductor arrangement according to FIG. 2 in a schematic side view, and
  • Fig. 4 shows a detail of Fig. 2 in an enlarged view.

In den Fig. 1 und 2 ist eine Leiteranordnung (1) in Form einer Feuerwehrleiter mit drei Leiterteilen (2, 3) dargestellt, die Obergurte (5) und Untergurte (4) aufweisen und im Bereich ihrer Untergurte (4) teleskopartig ineinandergesteckt und über Gleiter (22) längsgeführt sind. Das innerste bzw. erste Leiterteil (2) ist der Leiterspitz (19) zugeordnet und wird von den äußeren Leiterteilen (3) querschnittsmäßig vollständig umschlossen, wobei sämtliche Obergurte (5) in einer Ebene liegen.1 and 2, 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.

Die beiden äußeren Leiterteile (3) sind grundsätzlich gleich aufgebaut und umfassen im Bereich der Untergurte (4) unsymmetrisch profilierte seitliche Längsholme (21), die durch querverlaufende Leitersprossen (16) miteinander verbunden sind, sowie im Bereich der Obergurte (5) anders profilierte seitliche Längsholme (20), die über seitliche Diagonalstreben (6) mit den profilierten Längsholmen (21) des Untergurts (4) fest verbunden sind. Die äußeren Leiterteile (3) bilden ein oben offenes U-förmiges Querschnittsprofil.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.

Das der Leiterspitze (19) zugeordnete erste Leiterteil (2) weist im Gegensatz zu den anderen Leiterteilen (3) ein geschlossenes Querschnittsprofil auf. Im einzelnen sind einfach profilierte untere Längsholme (23) vorgesehen, die durch Diagonalstreben (15) miteinander verbunden sind. Längsholme (23) und Diagonalstreben (6) des ersten Leiterteils (2) entsprechen in etwa den anderen Leiterteilen (3), sind jedoch vergleichsweise klein dimensioniert Wesensmerkmal der Erfindung ist die Querverbindung zwischen den oberen Längsholmen (20) des ersten Leiterteils (2) durch Anordnung der Aufstiegssprossen (7) in den Obergurt (5). Die Aufstiegssprossen (7) erhöhen wesentlich die Torsionssteifigkeit des ersten Leiterteils (2), unterstützt durch untere Längsholme (14) im Bereich der Längsholme (23) oder -bleche des Untergurts. Die Längsholme (14) weisen ein geschlossenes Vierkantprofil auf und sind im Hochformat angeordnet. Aufgrund des geschlossenen Vierkantprofils der Längsholme (14) können diese als Wasserführungsrohre im Bereich des ersten Leiterteils (2) verwendet werden.In contrast to the other conductor parts (3), the first conductor part (2) assigned to the conductor tip (19) has a closed cross-sectional profile. In particular, 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).

Bei einer verlängerten Leiteranordnung (1) mit ausgeschobenen Leiterteilen (2 und 3) benützt eine Bedienungsperson anfangs die unteren Leitersprossen (16) der Leiterteile (3) und im Bereich des ersten Leiterteils (2) die oberen Aufstiegssprossen (7). Um einen Übergang zwischen den unteren Quersprossen (16) und den oberen Aufstiegssprossen (7) herzustellen, befinden sich am Längsende des ersten Leiterteils (2) zwischen Obergurt (5) und Untergurt (4) Überbrückungssprossen (8) an zugeordneten seitlichen Diagonalstreben (6), wie dies im einzelnen der Fig. 3 zu entnehmen ist.In the case of an extended ladder arrangement (1) with ladder parts (2 and 3) pushed out, an operator initially uses the lower ladder rungs (16) of the ladder parts (3) and in the area of the first ladder part (2) the upper ladder rungs (7). In order to create a transition between the lower cross rungs (16) and the upper ascending rungs (7), bridging rungs (8) are located on the associated lateral diagonal struts (6) at the longitudinal end of the first ladder part (2) between the upper chord (5) and lower chord (4). , as can be seen in detail in FIG. 3.

Am Obergurt (5) des ersten Leiterteils (2) sind ferner zwei seitliche hochschwenkbare Umgurtungen (10) vorgesehen, die einer Benutzungsperson in der hochgeschwenkten Lage als Handlauf dienen, wie dies ebenfalls im einzelnen der Fig.3 zu entnehmen ist. Die Umgurtung (10) gemäß Fig. 1 weist Verbindungsstreben (24) auf, deren Schwenkachse (11) parallel zu den oberen Längsholmen (20) verlaufen, mithin eine Umgurtung (10) zwischen einer versenkten Stellung im wesentlichen parallel zu den Aufstiegssprossen (7) gemäß Pfeil A der Fig. 1 und der im wesentlichen vertikalen Handlaufstellung geschwenkt werden kann. Demgegenüber besitzen die Verbindungsstreben (24) der Umgurtung (10) gemäß Fig. 3 Schwenkachsen (12), die in Richtung der Aufstiegssprossen (7) verlaufen, mithin die Umgurtung (10) nach Art eines Parallelograms gemäß Pfeil B in Längsrichtung des ersten Leiterteils (2) geschwenkt werden kann, und zwar aufgrund eines Kraftantriebs (13), z.B. einer Kolben-Zylinder-Anordnung bei einer hydraulisch betätigten Einheit, der zwischen Verbindungsstreben (24) und der Basis des ersten Leiterteils (2) angelenkt ist. Der Kraftantrieb (13) kann eine Dämpfungseinrichtung besitzen. In alternativer Ausführungsform kann die Verschwenkung des Handlaufs auch von Hand unterstützt durch Federn erfolgen. Zweckmäßigerweise ist ferner eine Arretierung (18) vorgesehen, die die Endlaufstellungen der Umgurtung (10) sichert.On the upper chord (5) of the first ladder part (2) there are also two lateral swivel straps (10) which serve as a handrail for a user in the swiveled-up position, as can also be seen in detail in FIG. 1 has connecting struts (24), the pivot axis (11) of which run parallel to the upper longitudinal spars (20), and consequently a strap (10) between a retracted position essentially parallel to the ascending rungs (7) 1 and the substantially vertical handrail position can be pivoted according to arrow A of FIG. In contrast, the connecting struts (24) of the belt (10) according to FIG. 3 have pivot axes (12) which run in the direction of the rungs (7), thus 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. In an alternative embodiment, 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).

Gemäß Fig. 2 ist gezeigt, daß die Erfindung trotz vorhandener Umgurtung (10) auch bei einem Betrieb der Leiteranordnung (1) mit einem Fahrstuhl (9) geeignet ist. Der Fahrstuhl (9) läuft hierbei bei eingeschwenkter Umgurtung (10) jeweils auf den Obergurten (5) der einzelnen Leiterteile (2 bzw. 3).According to 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).

Eine Umgurtung (10) weist vorteilhaft Verbindungsstreben (24) mit einer Höhe (h) 280 mm auf. Die bevorzugte lichte Breite (b) zwischen den hochgeschwenkten Umgurtungen (10) beträgt mindestens 450 mm (vgl. Fig. 4).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).

Claims (15)

1. A ladder arrangement (1) comprising extendable ladder parts (2, 3), especially a fire ladder, the individual ladder parts (2, 3) having bottom elongate members (4) and top elongate members (5), permanently interconnected by struts (6), characterised in that the first ladder part (2), i.e. the top or front part when the arrangement (1) is extended, is given the cross-section of a closed lattice girder, rungs (7) being secured to the top elongate member (5) of the first ladder part (2), and the top elongate member (5) of the first ladder part (2) has at least one lateral, preferably upwardly pivotable, peripheral elongate member (10) serving as a handrail.
2. A ladder arrangement according to claim 1, characterised in that all the top elongate members (5) including that of the first ladder part (2) are constructed as rails supporting a lift (9) (Fig. 2).
3. A ladder arrangement according to claim 1 or 2, characterised in that the peripheral elongate member (10) has a pivot (11) in the longitudinal direction of the first ladder part (2) and can be pivoted from a lowered position substantially parallel to the rungs (7), upwardly and outwardly through 90° into the handrail position (Fig. 1).
4. A ladder arrangement according to claim 1 or 2, characterised in that the peripheral elongate member (10) has a number of pivots (12) parallel to the rungs (7) and can be pivoted in the longitudinal direction of the first ladder part (2) from a lowered position near the rungs into the swung-up handrail position (Fig. 3).
5. A ladder arrangement according to any one of claims 1 to 4, characterised in that the upwardly swingable peripheral elongate member (10) can be locked at least in its swung-up handrail position.
6. A ladder arrangement according to any one of claims 1 to 5, characterised in that the upwardly swingable peripheral elongate member (10) can be pivoted manually, assisted by springs.
7. A ladder arrangement according to any one of claims 1 to 5, characterized in that the upwardly swingable peripheral elongate member (10) can be pivoted by a power drive (13).
8. A ladder arrangement according to claim 7, characterised in that the power drive (13) comprises a damping device.
9. A ladder arrangement according to claim 7 or 8, characterised in that the power drive (13) can be actuated by the extending movement of the first ladder part (2).
10. A ladder arrangement according to claim 8 or 9, characterised in that the power drive (13) can be remote-controlled from the rescue cage or the main control station.
11. A ladder arrangement according to any one of claims 1 to 10, characterised in that the bottom elongate member (4) of the first ladder part (2) has two lateral stringers (14), permanently interconnected by diagonal struts (15).
12. A ladder arrangement according to any one of claims 1 to 11, characterised in that the stringers (14) have a closed cross-section.
13. A ladder arrangement according to any one of claims 1 to 12, characterised in that the stringers (14) are given a rectangular cross-section on edge.
14. A ladder arrangement according to any one of claims 1 to 13, characterised in that the stringers (14) are constructed as water pipes.
15. A ladder arrangement according to any one of claims 1 to 14, characterised in that connecting rungs (8) between the top elongate member and the bottom elongate member are disposed on lateral diagonal struts (6) at the longitudinal end of the first ladder part (2).
EP87105390A 1986-04-26 1987-04-11 Ladder arrangement with extendable ladder sections Expired - Lifetime EP0243765B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105390T ATE57236T1 (en) 1986-04-26 1987-04-11 LADDER ARRANGEMENT WITH PULL-OUT LADDER SECTION.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3614266 1986-04-26
DE3614266 1986-04-26
DE19863625296 DE3625296A1 (en) 1986-04-26 1986-07-25 LADDER ARRANGEMENT WITH EXTENDABLE LADDER PARTS
DE3625296 1986-07-25

Publications (3)

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

Family

ID=25843274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105390A Expired - Lifetime EP0243765B2 (en) 1986-04-26 1987-04-11 Ladder arrangement with extendable ladder sections

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Country Link
EP (1) EP0243765B2 (en)
JP (1) JPH0826738B2 (en)
DE (2) DE3625296A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738886A1 (en) * 1997-09-05 1999-03-11 Iveco Magirus Ladder set for fire ladders
ITVR20050159A1 (en) * 2005-12-28 2007-06-29 C T E Spa PARTICULARLY CONFORMED STAIR PACKAGE AND CART TO WHICH IT IS COUPLED
FI122068B (en) * 2009-02-26 2011-08-15 Bronto Skylift Oy Ab Ladder for ski lift, ski lift and method for using the ski lift ladder
IL215088A0 (en) 2011-09-11 2011-10-31 Gilad Omri Telescopic ladder and locking mechanism thereof
CN103670261B (en) * 2013-12-02 2016-06-29 长沙中联消防机械有限公司 A kind of aerial ladder and fire control aerial ladder vehicle
WO2023181215A1 (en) * 2022-03-23 2023-09-28 株式会社モリタホールディングス Ladder and vehicle provided with said ladder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528178A (en) * 1917-10-03 1921-11-08 Georges Edmond Bottin Telescopic piling ladder
US3083784A (en) * 1961-07-26 1963-04-02 Budd Co Movable stair assembly
DE7120360U (en) * 1971-05-26 1971-09-02 Klaas T TRANSPORTABLE DEVICE USED AS LADDER OR MATERIAL ELEVATOR
DE2234194B2 (en) * 1972-07-12 1976-11-25 Kirsten, Erhard, 5509 Kell Turntable type firemen's ladder - has telescopically extendable crane jib upper side forming ladder with operator's platform at top
DE2328990C3 (en) * 1973-06-07 1980-05-14 Magirus-Deutz Ag, 7900 Ulm Bracket for a car
DE3229533A1 (en) * 1982-08-07 1984-02-09 Rudat GmbH, 5620 Velbert Ladder to fit in the driver's cab on a monorail suspension railway in mining
DE3326644A1 (en) * 1983-07-23 1985-01-31 Iveco Magirus AG, 7900 Ulm FIREFIGHTER LADDER WITH EXTENDABLE LADDER PARTS

Also Published As

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

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