EP2177709B1 - Échelle tournante avec dispositif de nivellement pour la superstructure rotative - Google Patents

Échelle tournante avec dispositif de nivellement pour la superstructure rotative Download PDF

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Publication number
EP2177709B1
EP2177709B1 EP08166880A EP08166880A EP2177709B1 EP 2177709 B1 EP2177709 B1 EP 2177709B1 EP 08166880 A EP08166880 A EP 08166880A EP 08166880 A EP08166880 A EP 08166880A EP 2177709 B1 EP2177709 B1 EP 2177709B1
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EP
European Patent Office
Prior art keywords
base
turntable
superstructure
understructure
ladder
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
EP08166880A
Other languages
German (de)
English (en)
Other versions
EP2177709A1 (fr
Inventor
Sebastian Tilp
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
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Iveco Magirus AG
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Publication date
Application filed by Iveco Magirus AG filed Critical Iveco Magirus AG
Priority to ES08166880T priority Critical patent/ES2367207T3/es
Priority to EP08166880A priority patent/EP2177709B1/fr
Priority to AT08166880T priority patent/ATE511594T1/de
Priority to JP2011531497A priority patent/JP5660732B2/ja
Priority to PCT/EP2009/063533 priority patent/WO2010043695A1/fr
Publication of EP2177709A1 publication Critical patent/EP2177709A1/fr
Application granted granted Critical
Publication of EP2177709B1 publication Critical patent/EP2177709B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/84—Slewing gear
    • B66C23/86—Slewing gear hydraulically actuated
    • 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
    • E06C5/06—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 by piston and cylinder, or equivalent means, operated by a pressure medium

Definitions

  • the present invention relates to a turntable ladder set comprising a ladder, a levelling device and a an understructure according to the preamble of claim 1.
  • Levelling devices of this type are used in vehicles fitted with turntable ladders, for example. With their help, one can ensure that, even if the vehicle is parked on a slope, the plane of erection within which the ladder set is erected around a pivoting axis remains vertical in all operating modes.
  • Such a device is disclosed in German utility model DE 21 35 341 U1 , for example. It comprises a two-part rotating frame consisting of a base and a superstructure which is pivotably connected to the base, and supports the turntable ladder.
  • the base is mounted on the vehicle understructure by means of a turntable which can be rotated, by means of a rotary drive attached to the understructure, around an upright axis which is perpendicular to the understructure.
  • the pivotal connection between the superstructure and the trailer is achieved by means of a horizontal connecting axis.
  • a pivot drive controlled by a regulating unit ensures that when the base rotates in relation to the understructure, the plane of erection is maintained vertical, thereby compensating for any inclination of the vehicle caused by a slope.
  • Alternative levelling devices as disclosed in DE 35 40 666 C2 , for example, comprise rotating frames with two-part bases, of which each base part is contrived to be approximately wedge-shaped and can be rotated in relation to the other base part by means of a turntable.
  • the ladder superstructure is mounted on this base by means of a top turntable, the inclination of which relative to a bottom turntable, used to mount the base on the understructure, can be modified by rotating the base elements relative to each other.
  • a levelling device is defined by a multi-part rotating frame, one part of which is formed by a base, which is mounted on a vehicle understructure by means of a first turntable, which can be rotated around an upright axis by means of a rotary drive attached to the understructure, and a further part formed by a superstructure supporting a turntable ladder, which is connected with the base in such a manner that it can be pivoted around a connecting axis s inclined relative to the upright axis.
  • the base of the cited solution has an approximately wedge-shaped cross-section and the cited superstructure is mounted on the base by means of a second turntable, which lies in a plane inclined relative to the first turntable, and is pivotable relative to the same base by means of a pivot drive.
  • levelling devices for turntable ladder of the abovecited types are also described for example in DE 3435833 A1 and in FR 871 927 A .
  • the task of the present invention is to create a levelling device of the aforementioned type, which is suitable for achieving level compensation for large and heavy superstructures in combination with a comparatively low own weight, high stability and relatively low costs.
  • the base itself has an approximately wedge-shaped cross-section.
  • the superstructure is mounted on the base by means of a second turntable positioned in a plane which is inclined relative to the first turntable for rotating the base on the understructure.
  • This means the base can be formed by a single wedge-shaped element.
  • a simplified pivot drive in the form of a push rod system, for example.
  • the superstructure can be pivoted, by means of the pivot drive, around the axis of rotation of the top turntable, said axis of rotation being inclined relative to the axis of rotation of the bottom turntable,
  • the pivot drive has to make a continual series of corrections in order to keep the plane of erection vertical.
  • a smooth rotation for moving the turntable ladder can be achieved by compensating the movements of the pivot drive by means of the rotary drive.
  • the advantage is that the superstructure is directly supported by the base, so that even larger forces can be absorbed.
  • the pivot axis of the superstructure relative to the base, and the upright axis around which the first turntable rotates are not vertical, but form a relatively small angle with each other, which, however, has to be greater than the inclination to be compensated. This has proved sufficient for the functioning of the present invention. Further, there are obvious benefits to be derived from the simplicity of the construction and the positive force transmission relationships. There is no need for heavy and costly drive constructions as used in the context of DE 35 40 666 C2 .
  • the levelling device comprises a second push rod extending between a third point of contact on the base, which lies directly adjacent the first point of contact of the first push rod, or coincides with this latter, and a fourth point of contact on the superstructure.
  • These two push rods may be disposed symmetrically around the centre axis of the second turntable between superstructure and base. If one of the two push rods is extended, the other push rod is automatically shortened. Overall, this results in an approximately V-shaped arrangement in which one side of the V shortens during the rotational movement, whilst the other is extended.
  • the push rods are preferably hydraulically driven telescopic cylinders.
  • the levelling device preferably comprises a sensor for measuring the lateral inclination of the plane of erection of the superstructure relative to the verticals, and a control unit to control the pivot drive and the rotary drive, which is there to ensure that, when the superstructure rotates in relation to the understructure, the lateral inclination of the plane of erection is brought to zero.
  • the control unit can thus convert a target rotary movement specified by an operator into a complex movement which is carried out by the pivot drive and the rotary drive, and, all in all, delivers the desired ladder movement whilst keeping the plane of erection vertical at all times.
  • control unit is provided to generate a specified rotation speed of the superstructure relative to the understructure by overlapping of two variable rotation speeds of the pivot drive and the rotary drive. The rotation speed then compensates for the pivot speed.
  • the levelling device 10 shown in Fig. 1 serves to orient the plane of erection of a turntable ladder, a boom, a telescopic mast or similar, vertically.
  • it is a ladder set for a fire-fighting vehicle, rotatably mounted on an understructure fixed to the vehicle and not shown in more detail.
  • Levelling device 10 comprises an essentially two-part rotating frame 11, formed by a base 14 as the bottom part, which is rotatably mounted on the vehicle understructure, and a superstructure 12 as the top part which supports the ladder set and is in turn supported by base 14.
  • Superstructure 12 is pivotably mounted on base 14, as will be illustrated in more detail below.
  • Base 14 is contrived as a wedge ring, i.e. it has a wedge-shaped lateral cross-section.
  • the upper edge 16 of base 14 lies in a plane E 1 which is inclined relative to plane E 2 of the ring-shaped lower edge 18 of base 14.
  • Base 14 is mounted on the understructure by means of a bottom turntable 20.
  • This latter is an annular gear 22, which is fixed to the lower edge 18 of base 14 and is rotatably mounted in a ring-shaped bearing 24 attached to the understructure.
  • Annual gear 22 can be driven and made to rotate by a bottom rotary drive 26, also attached to the understructure.
  • This rotary drive 26 comprises a motor, 28, on whose output shaft a pinion 30 is attached, which engages in annular ring 22 on the inside. Hence rotation of pinion 30 leads to rotation of annular gear 22 within its bearing 24.
  • Base 14 then rotates together with annular ring 22, being attached to it.
  • Superstructure 12 is mounted on base 14 by means of a second turntable 32. This latter comprises an outer ring 34, which is attached to superstructure 12 and is mounted concentrically around an inner ring 36, which is connected to base 14.
  • the top turntable 32 lies in plane E 1 , which is inclined relative to bottom turntable 20 in plane E 2 .
  • Top turntable 32 is driven to rotate relative to base 14 by means of a pivot drive 38.
  • Pivot drive 38 comprises two hydraulically driven telescopic cylinders 40, of which only one telescopic cylinder 40 can be seen in Fig. 1 .
  • telescopic cylinders 40 comprise an inner rod 44 which is extensibly mounted in a piston sleeve 46.
  • the end of inner rod 44 is connected with the inner wall of base 14 by means of a hinge 48 on the side on which the wall of base 14 is highest.
  • the end of piston sleeve 46 is in turn connected to the top turntable 32 by means of another hinge 50, i.e. is attached to outer ring 34 of superstructure 12.
  • Hinge 48 is essentially formed by a loop 52 at the end of the inner rod, which is traversed by a bolt that is not shown in more detail in Fig. 1 , which is held at its ends in two parallel flanges 54 projecting from the inside wall of base 14, and which enclose loop 52 on both sides. Telescopic cylinder 40 can therefore be pivoted around the bolt. In a similar manner, a loop 56 is contrived at the end of piston sleeve 46, and is traversed by another bolt 58 which is connected to outer ring 36 of top turntable 32.
  • the inclination of the plane of erection requiring compensation can be detected by a sensor, for example.
  • the measured result of this sensor can be fed into a corresponding control unit which controls pivot drive 38 and rotary drive 26 in the manner described above. If the vehicle is parked on a slope and a rotary movement of the ladder set relative to the understructure is required, this movement can be completed whilst the orientation of the plane of erection is kept vertical.
  • the control unit represents a target rotation speed of superstructure 12 relative to the understructure in one direction by overlapping two variable rotation speeds of pivot drive 38 and rotary drive 26.
  • the torsion angle of bottom turntable 20 ⁇ positioning and top turntable 32 ⁇ levelling is shown in degrees against time in seconds.
  • superstructure 12 and the ladder set complete a full 360°C rotation within 60 seconds.
  • this rotation is represented by an overlapping of two different rotary movements, namely a rotation of top turntable 32 and bottom turntable 20.
  • pivot drive 38 completes a pendulum movement between base 14 and superstructure 12, in a range of 60°.
  • This to and fro movement accomplishes the compensation of the lateral inclination of the plane of erection of superstructure 12.
  • For each position of bottom turntable 20 one can calculate what position the top turntable 32, i.e.
  • the rotation speed of the bottom and top turntables can be calculated as a function of the total rotation speed and rotation position.
  • the maximum required pivot angle ⁇ max. levelling can be estimated using the following equation (7).
  • ⁇ slope is the angle of inclination of plane E 2 of bottom turntable 20, and hence of the vehicle
  • ⁇ wedge is the wedge angle of base 14 between plane E 1 and plane E 2 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Ladders (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (5)

  1. Ensemble d'échelle pivotante comprenant une échelle, un correcteur de niveau et un soubassement de carrosserie sur lequel ladite échelle est montée au moyen dudit correcteur de niveau (10), le correcteur de niveau (10) comprenant un châssis rotatif à plusieurs pièces (11), dont une pièce est formée par une base (14) qui est montée sur ledit soubassement de carrosserie au moyen d'une première tourelle (20) qui peut être entraînée en rotation autour d'un axe droit au moyen d'un dispositif d'entraînement rotatif (26) fixé sur le soubassement de carrosserie et une autre pièce formée par une superstructure (12) supportant ladite échelle qui est raccordée avec une base (14) de sorte qu'elle peut pivoter autour d'un axe de raccordement qui est incliné par rapport à l'axe droit ; ladite superstructure (12) pouvant pivoter par rapport à la base (14) au moyen d'un dispositif d'entraînement de pivot (38), ladite base (14) ayant une section transversale approximativement en forme de cale, et ladite superstructure (12) étant montée sur la base (14) au moyen d'une deuxième tourelle (32) qui se trouve dans un plan (E1) qui est incliné par rapport à la première tourelle (20) ; l'ensemble étant caractérisé en ce que ledit dispositif d'entraînement de pivot (38) comprend au moins une tige de poussée (40) télescopiquement extensible qui s'étend entre un premier point de contact (62) sur ladite base (14) et un deuxième point de contact (66) sur ladite superstructure (12).
  2. Ensemble d'échelle pivotante selon la revendication 1, caractérisé par une deuxième tige de poussée (42) télescopiquement extensible qui s'étend entre un troisième point de contact (60) sur ladite base (14) qui est immédiatement adjacent au premier point de contact (62) de la première tige de poussée (40) ou coïncide avec ce dernier, et un quatrième point de contact (64) sur ladite superstructure (12).
  3. Ensemble d'échelle pivotante selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite (lesdites) tige(s) de poussée (40, 42) est ou sont imaginée(s) sous la forme de cylindres télescopiques hydrauliques.
  4. Ensemble d'échelle pivotante selon l'une quelconque des revendications précédentes, caractérisé par un capteur pour mesurer l'inclinaison latérale du plan d'installation de la superstructure par rapport aux verticales, et par une unité de commande pour commander le dispositif d'entraînement de pivot (38) et le dispositif d'entraînement rotatif (26) qui est prévu pour amener l'inclinaison latérale du plan d'installation à zéro lorsque ladite superstructure (12) est entraînée en rotation par rapport au soubassement de carrosserie.
  5. Ensemble d'échelle pivotante selon la revendication 4, caractérisé en ce que ladite unité de commande est prévue pour produire une vitesse de rotation spécifiée de la superstructure (12) par rapport au soubassement de carrosserie au moyen du chevauchement de deux vitesses de rotation variables du dispositif d'entraînement de pivot (38) et du dispositif d'entraînement rotatif (26).
EP08166880A 2008-10-17 2008-10-17 Échelle tournante avec dispositif de nivellement pour la superstructure rotative Active EP2177709B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES08166880T ES2367207T3 (es) 2008-10-17 2008-10-17 Conjunto de escalera sobre plataforma giratoria con un dispositivo de nivelación para superestructura giratoria.
EP08166880A EP2177709B1 (fr) 2008-10-17 2008-10-17 Échelle tournante avec dispositif de nivellement pour la superstructure rotative
AT08166880T ATE511594T1 (de) 2008-10-17 2008-10-17 Drehleiter mit nivelliervorrichtung für den drehbaren aufbau
JP2011531497A JP5660732B2 (ja) 2008-10-17 2009-10-16 回転可能な上部構造のためのレベリング装置
PCT/EP2009/063533 WO2010043695A1 (fr) 2008-10-17 2009-10-16 Dispositif de nivellement pour une superstructure rotative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08166880A EP2177709B1 (fr) 2008-10-17 2008-10-17 Échelle tournante avec dispositif de nivellement pour la superstructure rotative

Publications (2)

Publication Number Publication Date
EP2177709A1 EP2177709A1 (fr) 2010-04-21
EP2177709B1 true EP2177709B1 (fr) 2011-06-01

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ID=40512389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08166880A Active EP2177709B1 (fr) 2008-10-17 2008-10-17 Échelle tournante avec dispositif de nivellement pour la superstructure rotative

Country Status (5)

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EP (1) EP2177709B1 (fr)
JP (1) JP5660732B2 (fr)
AT (1) ATE511594T1 (fr)
ES (1) ES2367207T3 (fr)
WO (1) WO2010043695A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5820139B2 (ja) * 2011-04-01 2015-11-24 理浩 武内 高所作業用車両
CN103641046B (zh) * 2013-12-10 2016-03-02 长沙中联消防机械有限公司 连接座、高空作业车及其工作斗调平系统和布置方法
CN113353862B (zh) * 2021-07-20 2022-09-06 江苏徐工工程机械研究院有限公司 转台以及高空作业车

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR871927A (fr) * 1941-01-02 1942-05-22 Laffly Ets Dispositif perfectionné pour la mise d'aplomb d'un bâti pivotant
DE1506227B1 (de) * 1967-02-11 1970-05-14 Atlas Mak Maschinenbau Gmbh Ladegeschirr fuer schiffe
DE2135341B2 (de) 1971-07-15 1979-06-13 Magirus-Deutz Ag, 7900 Ulm Fahrbare ausziehleiter, insbesondere feuerwehrleiter
JPS60118600A (ja) * 1983-11-30 1985-06-26 森田ポンプ株式会社 高所作業車の傾斜矯正付旋回台
JPS6155094A (ja) * 1984-08-23 1986-03-19 森田ポンプ株式会社 高所作業車の自動傾斜矯正付旋回台
DE3540666C2 (de) 1985-11-16 1995-04-27 Iveco Magirus Vorrichtung zum lotrechten Ausrichten der Hochachse eines mit einem Untergestell dreh- und neigungsverstellbar verbundenen Aufbaus
JPH0444558Y2 (fr) * 1987-05-23 1992-10-20
DE4303208A1 (de) * 1992-03-24 1993-09-30 Iveco Magirus Vorrichtung zum lotrechten Ausrichten der Hochachse eines mit einem Untergestell dreh- und neigungsverstellbar verbundenen Aufbaus

Also Published As

Publication number Publication date
WO2010043695A1 (fr) 2010-04-22
ES2367207T3 (es) 2011-10-31
JP2012505805A (ja) 2012-03-08
ATE511594T1 (de) 2011-06-15
EP2177709A1 (fr) 2010-04-21
JP5660732B2 (ja) 2015-01-28

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