EP0814052A1 - Mobile working platform - Google Patents

Mobile working platform Download PDF

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Publication number
EP0814052A1
EP0814052A1 EP97102333A EP97102333A EP0814052A1 EP 0814052 A1 EP0814052 A1 EP 0814052A1 EP 97102333 A EP97102333 A EP 97102333A EP 97102333 A EP97102333 A EP 97102333A EP 0814052 A1 EP0814052 A1 EP 0814052A1
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EP
European Patent Office
Prior art keywords
aerial work
work platform
axis
platform according
turntable
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.)
Granted
Application number
EP97102333A
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German (de)
French (fr)
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EP0814052B1 (en
Inventor
Marius Bartsch
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.)
Palfinger Europe GmbH
Jennissen Gruppe GmbH
Original Assignee
Bison Stematec Maschinenbau und Hubarbeitsbuehnen Produktionsgesellschaft mbH
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Publication of EP0814052A1 publication Critical patent/EP0814052A1/en
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    • 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

Definitions

  • the present invention relates to a mobile aerial work platform with a chassis and a support device for a platform, on which a first slewing ring is arranged, which is arranged with its vertical axis approximately centrally on the platform and carries a horizontal bar which can be pivoted about the axis and which offsets a second axis
  • a first slewing ring is arranged, which is arranged with its vertical axis approximately centrally on the platform and carries a horizontal bar which can be pivoted about the axis and which offsets a second axis
  • Such mobile aerial work platforms correspond to the European draft standard prEN 280 from April 1994, as it was drawn up by the Technical Committee CEN / TC 98 / AG 1 of the European Committee for Standardization.
  • the mobile aerial work platforms can be designed as trailers or as self-propelled work machines.
  • the prior art knows complex multi-telescope systems as well as a strong cranking of the slewing tower in order to be able to use the area above a driver's cab.
  • the strong cranking of the swing tower means that when swinging the swing tower exceeds the vehicle width and protrudes into the traffic area.
  • the range of the lifting device to the front must be restricted for reasons of stability.
  • Another disadvantage of the prior art is the generally general need for support devices which can be extended telescopically over the width of the vehicle to be used, which also obstruct traffic, but are required for safe operation.
  • German patent application DE 1 960 829 A1 describes a mobile aerial work platform with two turntables.
  • the movement of the slewing rings is controlled separately via two independently operating drive units. With such an arrangement, a position outside the vehicle is to be better achieved in space.
  • the invention has for its object to design an aerial work platform described in the introduction so that fewer telescopes are used with a comparable overall length and that both in the state of the method of the aerial work platform and in the operation of the aerial work platform a better mobility of the aerial work platform itself and more space for a flowing past Traffic remains.
  • the invention also uses the known cranking of the swing tower, which, however, can be larger than comparable aerial work platforms in order to use the free space above the driver's cab, for example, and to shorten the overall length of the working machine. Shortening the overall length is associated with a change in the center of gravity, which results in a short wheelbase, which benefits the maneuverability of the aerial work platform in road traffic. In addition, the shifting of the center of gravity significantly increases the range of the swing tower to the front via the driver's cab.
  • the comparatively large cranking of the pivot tower is also present balanced that the pivoting takes place about two mutually offset axes of rotation, which according to the invention are connected to each other to form an opposing forced movement.
  • the swing tower is connected to the horizontal beam in such a way that they have an opposite rotational movement.
  • the opposite movement between the swing tower and the horizontal beam is generated by a gear acting between the two elements, the opposite angular velocity between the horizontal beam and the swing tower being approximately the same. This ensures that exceeding the vehicle contour is largely avoided.
  • a uniform weight loading of the supports or the carrier vehicle is achieved.
  • the counter-rotation of the horizontal bar and the swing tower advantageously reduces the drive torque of the transmission by approximately 50%.
  • the distance between the two axes of rotation can advantageously be balanced with a counterweight, as a result of which the center of gravity largely remains within a tightly held support device, which preferably does not exceed the vehicle size.
  • the offset is also dimensioned such that, on the one hand, it comes to lie above a driver's cab when driving and, on the other hand, it does not exceed the vehicle width.
  • the known support device also used in the invention can, if necessary, extend beyond the area occupied by the platform, although in most cases a one-sided support is sufficient.
  • the exemplary embodiment shown shows a self-propelled aerial work platform 10.
  • a chassis or platform 12 is supported during travel by a chassis, of which wheels 16 are shown.
  • a vertical axis of rotation 20 On the platform 12 sits in the center area of the platform surface or in the center area between the four supports 18 with a vertical axis of rotation 20 a fixed, ie connected to the platform 12 turntable 22, about whose vertical axis 20 a horizontal bar 24 is pivotable.
  • the slewing ring 22 can, however, also be arranged offset from the center of the platform 12.
  • a second slewing ring 26 with an axis of rotation 28 is provided at the there is a counterweight 30 opposite the end of the horizontal bar 24.
  • the second slewing ring 26 carries a pivoting tower 32 which, in the exemplary embodiment shown, merges into a cranked fork 34.
  • a pivoting tower 32 which, in the exemplary embodiment shown, merges into a cranked fork 34.
  • a boom 38 is mounted so that it can be swiveled up and down.
  • the boom 38 can also be extended telescopically.
  • the self-propelled implement can be moved in the usual manner with the work basket 40 behind the rear as well as in front of the driver's cab 14 in order to keep the driving length as short as possible during driving.
  • the second slewing ring 26 with its structure and here mainly with the boom 38 about the axis 28 and on the other hand the horizontal or balance beam 24 about the axis 20 are positively connected to an opposite rotational movement, namely so that the rotational movement takes place in the direction of the arrows.
  • the rotary connection takes place via a gear within the horizontal bar 24, which is not visible in the illustration of the drawing. It can be any positive connection, in particular a gear transmission connection or friction connection, a belt or chain connection, which preferably rolls, rolls or unwinds around a fixed, closed circular arc.
  • the drive of this simultaneous and opposite pivoting movement of the pivoting tower 32 against the pivoting movement of the horizontal bar 24 can be initiated in various ways.
  • the axis 20 or the axis 28 can be driven.
  • a movement coupling is preferred in which one of the two ring gears 22 or 26 is fixed and the driven part rolls on this ring gear of the fixed part via at least one countershaft sprocket.
  • a rotational movement introduced into the axis 28 would cause the Swing tower 32 with boom 38 as well as an opposing forced movement of the horizontal beam 24.
  • the opposite angular velocity of both movements is the same. This can be achieved, for example, by means of a transmission in which the driven second rotating ring 26 rolls with a gear wheel via a countershaft sprocket of any diameter on an opposite fixed ring gear.
  • the rotary movement can also be expediently initiated with a motor via the axis 20 of the first rotary ring 22.
  • the second slewing ring 26 would then be fixed.
  • the counterweight 30 is located within the region of the platform 12 even in the case of a right-angled deflection of the longitudinal extension of the platform 12, so that, for example, traffic can flow unhindered on the side of the counterweight in this working position.
  • This position can be essential, for example, when working beyond a railing.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)
  • Types And Forms Of Lifts (AREA)
  • Vehicle Body Suspensions (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The platform has a first turntable with its vertical axis (20) approximately concentric on the platform (12) and supports a horizontal beam (24) which pivots around the vertical axis. The horizontal beam supports an axially offset second turntable (26) with an upper carrying chassis. For double motion of the horizontal beam the second turntable is connected via a gear acting between the boom (38) and beam. The gear may be formed via two intermeshing gears between both rotation axes (20,28). The first axis of the first turntable may be driven whilst the axis (28) of the second turntable may be firmly connected to the rotary tower (32).

Description

Die vorliegende Erfindung betrifft eine fahrbare Hubarbeitsbühne mit einem Fahrwerk und einer Stützeinrichtung für eine Plattform, auf der ein erster Drehkranz angeordnet ist, der mit seiner vertikalen Achse etwa mittig auf der Plattform angeordnet ist und einen um die Achse schwenkbaren Horizontalbalken trägt, welcher achsenversetzt einen zweiten Drehkranz mit einem Schwenkturm mit einem Arbeitskorb an der Spitze eines Auslegers aufweist, wobei der Schwenkturm um eine vertikale Achse des zweiten Drehkranzes drehbar ist.The present invention relates to a mobile aerial work platform with a chassis and a support device for a platform, on which a first slewing ring is arranged, which is arranged with its vertical axis approximately centrally on the platform and carries a horizontal bar which can be pivoted about the axis and which offsets a second axis Has slewing ring with a swing tower with a work basket at the top of a boom, wherein the slewing tower is rotatable about a vertical axis of the second slewing ring.

Derartige fahrbare Hubarbeitsbühnen entsprechen dem europäischen Normentwurf prEN 280 vom April 1994, wie er vom Technischen Komitee CEN/TC 98/AG 1 des Europäischen Komitees für Normung erstellt wurde. Dabei können die fahrbaren Hubarbeitsbühnen als Anhänger oder als selbstfahrende Arbeitsmaschinen ausgebildet sein.Such mobile aerial work platforms correspond to the European draft standard prEN 280 from April 1994, as it was drawn up by the Technical Committee CEN / TC 98 / AG 1 of the European Committee for Standardization. The mobile aerial work platforms can be designed as trailers or as self-propelled work machines.

Aus dem Bemühen, die Gesamtlänge der fahrbaren Hubarbeitsbühne kurz und verkehrsfreundlich zu gestalten, kennt der Stand der Technik aufwendige Mehrfachteleskopsysteme sowie eine starke Kröpfung des Schwenkturms, um den Bereich über einem Führerhaus nutzen zu können. Die starke Kröpfung des Schwenkturms führt dazu, daß der Schwenkturm beim Schwenken die Fahrzeugbreite übersteigt und in den Verkehrsbereich hineinragt. Bei der üblichen Anordnung einer vorderen Abstützeinrichtung gleich hinter dem Führerhaus muß die Reichweite der Hubeinrichtung nach vorn aus Standsicherheitsgründen eingeschränkt werden.
Ein weiterer Nachteil des Standes der Technik ist die zumeist generelle Notwendigkeit, teleskopartig über die Breite des Fahrzeugs hinaus verlängerbare oder ausklappbare Abstützeinrichtungen einzusetzen, die ebenfalls im Betrieb verkehrsbehindernd, aber für einen sicheren Betrieb erforderlich sind.From the effort to make the total length of the mobile aerial work platform short and traffic-friendly, the prior art knows complex multi-telescope systems as well as a strong cranking of the slewing tower in order to be able to use the area above a driver's cab. The strong cranking of the swing tower means that when swinging the swing tower exceeds the vehicle width and protrudes into the traffic area. In the usual arrangement of a front support device directly behind the cab, the range of the lifting device to the front must be restricted for reasons of stability.
Another disadvantage of the prior art is the generally general need for support devices which can be extended telescopically over the width of the vehicle to be used, which also obstruct traffic, but are required for safe operation.

Die deutsche Patentanmeldung DE 1 960 829 A1 beschreibt eine fahrbare Hubarbeitbühne mit zwei Drehkränzen. Die Bewegung der Drehkränze wird dabei über zwei unabhängig voneinander wirkenden Antriebseinheiten jeweils separat gesteuert. Mit einer derartigen Anordnung soll eine Position außerhalb des Fahrzeuges räumlich besser erreicht werden können.German patent application DE 1 960 829 A1 describes a mobile aerial work platform with two turntables. The movement of the slewing rings is controlled separately via two independently operating drive units. With such an arrangement, a position outside the vehicle is to be better achieved in space.

Der Erfindung liegt die Aufgabe zugrunde, eine eingangs beschriebene Hubarbeitsbühne so zu gestalten, daß bei vergleichbarer Baulänge weniger Teleskope verwendet werden und daß sowohl im Zustand des Verfahrens der Hubarbeitsbühne als auch im Betrieb der Hubarbeitsbühne eine bessere Beweglichkeit der Hubarbeitsbühne selbst und mehr Freiraum für einen vorbeifließenden Verkehr verbleibt.The invention has for its object to design an aerial work platform described in the introduction so that fewer telescopes are used with a comparable overall length and that both in the state of the method of the aerial work platform and in the operation of the aerial work platform a better mobility of the aerial work platform itself and more space for a flowing past Traffic remains.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Hauptanspruchs gelöst.The object is achieved by the features of the main claim.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen dargelegt.Advantageous embodiments of the invention are set out in the subclaims.

Auch die Erfindung benutzt die an sich bekannte Kröpfung des Schwenkturms, die gegenüber vergleichbaren Hubarbeitsbühnen allerdings größer ausfallen kann, um den Freiraum beispielsweise über dem Führerhaus zu nutzen und die Gesamtlänge der Arbeitsmaschine zu verkürzen. Mit der Verkürzung der Gesamtlänge verbindet sich eine Schwerpunktveränderung, die einen kurzen Radstand zur Folge hat, was der Wendigkeit der Hubarbeitsbühne im Straßenverkehr zugute kommt. Zudem wird durch die Schwerpunktsverlagerung die Reichweite des Schwenkturms nach vorn über das Führerhaus des Trägerfahrzeugs wesentlich erhöht.The invention also uses the known cranking of the swing tower, which, however, can be larger than comparable aerial work platforms in order to use the free space above the driver's cab, for example, and to shorten the overall length of the working machine. Shortening the overall length is associated with a change in the center of gravity, which results in a short wheelbase, which benefits the maneuverability of the aerial work platform in road traffic. In addition, the shifting of the center of gravity significantly increases the range of the swing tower to the front via the driver's cab.

Die ebenfalls vorhandene vergleichsweise große Kröpfung des Schwenkturms wird gemäß der vorliegenden Erfindung dadurch ausgeglichen, daß das Schwenken um zwei gegeneinander versetzt angeordnete Drehachsen erfolgt, die erfindungsgemäß zu einer gegenläufigen Zwangsbewegung miteinander verbunden sind. Der Schwenkturm ist dabei mit dem Horizontalbalken verbunden, derart, daß sie eine gegenläufige Drehbewegung aufweisen.According to the present invention, the comparatively large cranking of the pivot tower is also present balanced that the pivoting takes place about two mutually offset axes of rotation, which according to the invention are connected to each other to form an opposing forced movement. The swing tower is connected to the horizontal beam in such a way that they have an opposite rotational movement.

Vorteilhafterweise wird die gegenläufige Bewegung zwischen dem Schwenkturm und dem Horizontalbalken durch ein zwischen beiden Elementen wirkendes Getriebe erzeugt, wobei die gegenläufige Winkelgeschwindigkeit zwischen Horizontalbalken und Schwenkturm ungefähr gleich groß ist. Dadurch ist gewährleistet, daß ein Überschreiten der Fahrzeugkontur weitestgehend vermieden wird. Zudem wird eine gleichmäßige Gewichtsbelastung der Stützen bzw. des Trägerfahrzeuges erzielt. Außerdem wird durch die Gegenläufigkeit von Horizontalbalken und Schwenkturm vorteilhafterweise eine Antriebsmomentenreduzierung des Getriebes um ca. 50 % erreicht.Advantageously, the opposite movement between the swing tower and the horizontal beam is generated by a gear acting between the two elements, the opposite angular velocity between the horizontal beam and the swing tower being approximately the same. This ensures that exceeding the vehicle contour is largely avoided. In addition, a uniform weight loading of the supports or the carrier vehicle is achieved. In addition, the counter-rotation of the horizontal bar and the swing tower advantageously reduces the drive torque of the transmission by approximately 50%.

Zudem kann der Abstand zwischen beiden Drehachsen vorteilhafterweise mit einem Gegengewicht ausbalanciert werden, wodurch sich der Schwerpunkt weitgehend innerhalb einer eng gehaltenen Abstützeinrichtung hält, die möglichst die Fahrzeuggröße nicht überschreitet. Auch die Abkröpfung ist erfindungsgemäß so bemessen, das sie einerseits im Fahrbetrieb oberhalb eines Führerhauses zu liegen kommt und andererseits die Fahrzeugbreite nicht überschreitet.In addition, the distance between the two axes of rotation can advantageously be balanced with a counterweight, as a result of which the center of gravity largely remains within a tightly held support device, which preferably does not exceed the vehicle size. According to the invention, the offset is also dimensioned such that, on the one hand, it comes to lie above a driver's cab when driving and, on the other hand, it does not exceed the vehicle width.

Die auch bei der Erfindung verwendete bekannte Abstützeinrichtung kann erforderlichenfalls über die von der Plattform eingenommene Fläche hinaus erstreckt werden, wenngleich in den meisten Fällen eine einseitige Abstützung ausreicht.The known support device also used in the invention can, if necessary, extend beyond the area occupied by the platform, although in most cases a one-sided support is sufficient.

Weitere Einzelheiten, Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines zeichnerisch dargestellten Ausführungsbeispiels.Further details, features and advantages of the present invention result from the following description of an exemplary embodiment shown in the drawing.

Es zeigen

Figur 1
eine Seitenansicht einer selbstfahrenden Hubarbeitsbühne in der üblichen Fahrtstellung;
Figur 2
eine Draufsicht der Hubarbeitsbühne im Betriebszustand mit einer in eine 45°-Stellung geschwenkte Hubeinrichtung;
Figur 3
eine Ansicht vom Heck mit einem optimal weit ausgelegten Ausleger;
Figur 4
eine Draufsicht in einer gegenüber Figur 2 anderen Arbeitsstellung; und
Figur 5
eine Seitenaufsicht auf die selbstfahrende Hubarbeitsbühne in einer Stellung, in der sich der Arbeitskorb vor dem Führerhaus befindet.
Show it
Figure 1
a side view of a self-propelled aerial work platform in the usual driving position;
Figure 2
a plan view of the aerial work platform in the operating state with a lifting device pivoted into a 45 ° position;
Figure 3
a view from the rear with an optimally wide arm;
Figure 4
a plan view in a different working position compared to Figure 2; and
Figure 5
a side view of the self-propelled aerial work platform in a position in which the work basket is in front of the cab.

Das dargestellte Ausführungsbeispiel zeigt eine selbstfahrende Hubarbeitsbühne 10. Ein Chassis oder eine Plattform 12 wird im Fahrbetrieb von einem Fahrwerk abgestützt, von dem Räder 16 dargestellt sind. Für die Abstützung im Betrieb ist eine Stützvorrichtung mit ausfahrbaren Stützen 18 vorhanden, zu der zu bemerken ist, daß die Stützvorrichtungen normalerweise lediglich vertikal an den vier äußeren Ecken des Chassis oder der Plattform 12 angeordnet zu sein brauchen.The exemplary embodiment shown shows a self-propelled aerial work platform 10. A chassis or platform 12 is supported during travel by a chassis, of which wheels 16 are shown. For support during operation there is a support device with extendable supports 18, to which it should be noted that the support devices normally only need to be arranged vertically at the four outer corners of the chassis or platform 12.

Auf der Plattform 12 sitzt im Mittenbereich der Plattformfläche oder im Mittenbereich zwischen den vier Abstützungen 18 mit einer vertikalen Drehachse 20 ein feststehender, d.h. mit der Plattform 12 verbundener Drehkranz 22, um dessen vertikale Achse 20 ein Horizontalbalken 24 schwenkbar ist. Der Drehkranz 22 kann allerdings auch von der Mitte der Plattform 12 versetzt angeordnet sein. An einem Ende des Horizontalbalkens 24 ist ein zweiter Drehkranz 26 mit einer Drehachse 28 vorgesehen. Am gegenüberliegenden Ende des Horizontalbalkens 24 befindet sich ein Gegengewicht 30.On the platform 12 sits in the center area of the platform surface or in the center area between the four supports 18 with a vertical axis of rotation 20 a fixed, ie connected to the platform 12 turntable 22, about whose vertical axis 20 a horizontal bar 24 is pivotable. The slewing ring 22 can, however, also be arranged offset from the center of the platform 12. At one end of the horizontal bar 24, a second slewing ring 26 with an axis of rotation 28 is provided. At the there is a counterweight 30 opposite the end of the horizontal bar 24.

Der zweite Drehkranz 26 trägt einen Schwenkturm 32, der im dargestellten Ausführungsbeispiel in eine abgekröpfte Gabel 34 übergeht. Am freien Ende der Gabel 34 befindet sich ein horizontales Gelenk 36, in dem ein Ausleger 38 auf- und abschwenkbar gelagert ist. Selbstverständlich kann der Ausleger 38 auch teleskopförmig ausziehbar sein. An der Stütze des Auslegers befindet sich üblicherweise ein Arbeitskorb 40.The second slewing ring 26 carries a pivoting tower 32 which, in the exemplary embodiment shown, merges into a cranked fork 34. At the free end of the fork 34 there is a horizontal joint 36 in which a boom 38 is mounted so that it can be swiveled up and down. Of course, the boom 38 can also be extended telescopically. There is usually a work basket 40 on the bracket of the boom.

Wie aus den Figuren 1 und 5 hervorgeht, kann das selbstfahrende Arbeitsgerät sowohl in der üblichen Weise mit dem Arbeitskorb 40 hinter dem Heck als auch vor dem Führerhaus 14 bewegt werden, um im Fahrbetrieb die Fahrlänge möglichst kurz halten zu können.As can be seen from FIGS. 1 and 5, the self-propelled implement can be moved in the usual manner with the work basket 40 behind the rear as well as in front of the driver's cab 14 in order to keep the driving length as short as possible during driving.

Wie aus den Figuren 2 und 4 hervorgeht, sind einerseits der zweite Drehkranz 26 mit seinem Aufbau und hierbei hauptsächlich mit dem Ausleger 38 um die Achse 28 und andererseits der Horizontal- bzw. Waagebalken 24 um die Achse 20 zu einer gegenläufigen Drehbewegung zwangsverbunden, und zwar so, daß die Drehbewegung in Richtung der eingezeichneten Pfeile erfolgt. Die Drehverbindung erfolgt über ein Getriebe innerhalb des Horizontalbalkens 24, das in der Darstellung der Zeichnung nicht sichtbar ist. Es kann sich um eine beliebige formschlüssige, insbesondere eine Zahnradgetriebe-Verbindung oder Reibverbindung, um eine Riemen- oder Kettenverbindung handeln, die sich vorzugsweise um einen feststehenden, geschlossenen Kreisbogen abrollt, abwälzt oder abwickelt. Der Antrieb dieser gleichzeitigen und gegensinnigen Schwenkbewegung des Schwenkturms 32 gegen die Schwenkbewegung des Horizontalbalkens 24 kann auf verschiedene Weise eingeleitet werden. Es kann die Achse 20 oder die Achse 28 angetrieben werden. Bevorzugt wird eine Bewegungskopplung, bei der einer der beiden Zahnkränze 22 oder 26 feststeht und der angetriebene Teil sich auf diesem Zahnkranz des feststehenden Teils über zumindest ein Vorgelegeritzel abwälzt. So würde eine in die Achse 28 eingeleitete Drehbewegung ein Schwenken des Schwenkturms 32 mit Ausleger 38 ebenso zur Folge haben, wie eine gegenläufige Zwangsbewegung des Horizontalbalkens 24. Die gegenläufige Winkelgeschwindigkeit beider Bewegungen ist gleich groß. Dies kann beispielsweise durch ein Getriebe verwirklicht werden, bei dem sich der angetriebene zweite Drehkranz 26 mit einem Zahnrad über ein Vorgelegeritzel mit einem beliebigen Durchmesser auf einem gegenüberliegenden feststehenden Zahnkranz abrollt.As can be seen from FIGS. 2 and 4, on the one hand the second slewing ring 26 with its structure and here mainly with the boom 38 about the axis 28 and on the other hand the horizontal or balance beam 24 about the axis 20 are positively connected to an opposite rotational movement, namely so that the rotational movement takes place in the direction of the arrows. The rotary connection takes place via a gear within the horizontal bar 24, which is not visible in the illustration of the drawing. It can be any positive connection, in particular a gear transmission connection or friction connection, a belt or chain connection, which preferably rolls, rolls or unwinds around a fixed, closed circular arc. The drive of this simultaneous and opposite pivoting movement of the pivoting tower 32 against the pivoting movement of the horizontal bar 24 can be initiated in various ways. The axis 20 or the axis 28 can be driven. A movement coupling is preferred in which one of the two ring gears 22 or 26 is fixed and the driven part rolls on this ring gear of the fixed part via at least one countershaft sprocket. Thus, a rotational movement introduced into the axis 28 would cause the Swing tower 32 with boom 38 as well as an opposing forced movement of the horizontal beam 24. The opposite angular velocity of both movements is the same. This can be achieved, for example, by means of a transmission in which the driven second rotating ring 26 rolls with a gear wheel via a countershaft sprocket of any diameter on an opposite fixed ring gear.

Die Drehbewegung kann auch zweckmäßigerweise über die Achse 20 des ersten Drehkranzes 22 mit einem Motor eingeleitet werden. Der zweite Drehkranz 26 würde dann fixiert sein.The rotary movement can also be expediently initiated with a motor via the axis 20 of the first rotary ring 22. The second slewing ring 26 would then be fixed.

Wie Figur 3 zeigt, befindet sich selbst in rechtwinkliger Auslenkung der Längserstreckung der Plattform 12 das Gegengewicht 30 innerhalb des Bereichs der Plattform 12, so daß beispielsweise auf der Seite des Gegengewichts in dieser Arbeitsstellung ein Verkehr ungehindert vorbeifließen kann. Diese Stellung kann beispielsweise bei Arbeiten jenseits eines Brückengeländers wesentlich sein.As FIG. 3 shows, the counterweight 30 is located within the region of the platform 12 even in the case of a right-angled deflection of the longitudinal extension of the platform 12, so that, for example, traffic can flow unhindered on the side of the counterweight in this working position. This position can be essential, for example, when working beyond a railing.

Auch in allen übrigen Stellungen kann selbst dann, wenn sich die Abkröpfung der Gabel 34 in den Verkehrsraum erstreckt, genügend Platz für einen vorbeifließenden Verkehr bleiben. Bei den in Figur 2 und 4 klargestellten diagonalen Stellungen ist auf der einen Seite der Arbeitsmaschine vorbeifließender Verkehr ohnehin nicht behindert, während auf der Seite der Arbeitsbühne oder des Korbs 40 der Verkehr unterhalb des Auslegers 38 genügend freien Platz findet.Even in all other positions, even if the bend of the fork 34 extends into the traffic space, there can be enough space for traffic flowing past. In the diagonal positions clarified in FIGS. 2 and 4, traffic flowing past on one side of the working machine is not hindered anyway, while on the side of the working platform or the basket 40 there is sufficient free space below the boom 38.

Claims (15)

Fahrbare Hubarbeitsbühne mit einem Fahrwerk (16) und einer Stützeinrichtung (18) für eine Plattform (12), auf der ein erster Drehkranz (22) angeordnet ist, der mit seiner vertikalen Achse (20) etwa mittig auf der Plattform (12) angeordnet ist und einen um die Achse (20) schwenkbaren Horizontalbalken (24) trägt, welcher achsenversetzt einen zweiten Drehkranz (26) mit einem Schwenkturm (32) mit einem Arbeitskorb (40) an der Spitze eines Auslegers (38) aufweist, wobei der Schwenkturm (32) um eine vertikale Achse (28) des zweiten Drehkranzes (26) drehbar ist,
dadurch gekennzeichnet,
daß der Schwenkturm (32) mit dem Horizontalbalken (24) verbunden ist, derart, daß sie eine gegenläufige Drehbewegung aufweisen.Mobile aerial work platform with a chassis (16) and a support device (18) for a platform (12) on which a first slewing ring (22) is arranged, the vertical axis (20) of which is arranged approximately centrally on the platform (12) and carries a horizontal beam (24) which can be pivoted about the axis (20) and which has a second turntable (26) with a pivoting tower (32) with a working cage (40) at the tip of a boom (38), the pivoting tower (32 ) is rotatable about a vertical axis (28) of the second rotating ring (26),
characterized,
that the pivot tower (32) is connected to the horizontal beam (24) in such a way that they have an opposite rotational movement. Hubarbeitsbühne nach Anspruch 1,
dadurch gekennzeichnet,
daß die gegenläufige Bewegung zwischen dem Schwenkturm (32) und dem Horizontalbalken (24) durch ein zwischen beiden wirkendes Getriebe erzeugbar ist.Aerial work platform according to claim 1,
characterized,
that the opposite movement between the pivot tower (32) and the horizontal bar (24) can be generated by a gear acting between the two. Hubarbeitsbühne nach Anspruch 2,
dadurch gekennzeichnet,
daß das Getriebe eine formschlüssige Verbindung ist.Aerial work platform according to claim 2,
characterized,
that the transmission is a positive connection. Hubarbeitsbühne nach Anspruch 2,
dadurch gekennzeichnet,
daß das Getriebe ein Reibgetriebe ist.Aerial work platform according to claim 2,
characterized,
that the gear is a friction gear. Hubarbeitsbühne nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß das Getriebe ein Ketten- oder Riemengetriebe ist.Aerial work platform according to one or more of the preceding claims,
characterized,
that the transmission is a chain or belt transmission. Hubarbeitsbühne nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet,
daß das Getriebe ein Zahnradgetriebe ist.Aerial work platform according to claim 1, 2 or 3,
characterized,
that the transmission is a gear transmission. Hubarbeitsbühne nach Anspruch 6,
dadurch gekennzeichnet,
daß das Getriebe durch zwei direkt kämmende Zahnräder zwischen den beiden Schwenkachsen (20, 28) gebildet ist.Aerial work platform according to claim 6,
characterized,
that the gear is formed by two directly meshing gears between the two pivot axes (20, 28). Hubarbeitsbühne nach Anspruch 6,
dadurch gekennzeichnet,
daß das Getriebe ein Vorgelegegetriebe mit einem Vorgelegeritzel zwischen zwei Zahnrädern (42, 44) ist, wobei je eines der Zahnräder (42, 44) mit je einer Schwenkachse (20, 28) verbunden ist und eines der drei Zahnräder (42, 44) oder das Ritzel mit seiner zugehörigen Achse (20, 28) fest verbunden ist.Aerial work platform according to claim 6,
characterized,
that the transmission is a countershaft transmission with a countershaft sprocket between two gearwheels (42, 44), one of the gearwheels (42, 44) each having a pivot axis (20, 28) and one of the three gearwheels (42, 44) or the pinion is firmly connected to its associated axis (20, 28). Hubarbeitsbühne nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß die Achse (20) des ersten Drehkranzes (22) angetrieben und die Achse (28) des zweiten Drehkranzes (26) mit dem Drehturm (32) fest verbunden ist.Aerial work platform according to one or more of the preceding claims,
characterized,
that the axis (20) of the first turntable (22) is driven and the axis (28) of the second turntable (26) is fixed to the turret (32). Hubarbeitsbühne nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
daß die Achse (28) des zweiten Drehkranzes (26) angetrieben und die Achse (20) des ersten Drehkranzes (22) mit der Plattform (12) fest verbunden ist.Aerial work platform according to one of claims 1 to 8,
characterized,
that the axis (28) of the second turntable (26) is driven and the axis (20) of the first turntable (22) is firmly connected to the platform (12). Hubarbeitsbühne nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß die gegenläufige Winkelgeschwindigkeit zwischen Horizontalbalken (24) und Schwenkturm (32) gleich groß ist.Aerial work platform according to one or more of the preceding claims,
characterized,
that the opposite angular velocity between the horizontal bar (24) and the swing tower (32) is the same. Hubarbeitsbühne nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß der Horizontalbalken (24) mit einem Gegengewicht (36) ausbalanciert ist.Aerial work platform according to one or more of the preceding claims,
characterized,
that the horizontal bar (24) is balanced with a counterweight (36). Hubarbeitsbühne nach Anspruch 12,
dadurch gekennzeichnet,
daß der Abstand von der Achse (28) des zweiten Drehkranzes (26) zur Schwenkachse (20) des ersten Drehkranzes und der Abstand der Achse (20) des ersten Drehkranzes (22) zur Schwerachse des Gegengewichts (36) gleich groß ist.Aerial work platform according to claim 12,
characterized,
that the distance from the axis (28) of the second turntable (26) to the pivot axis (20) of the first turntable and the distance from the axis (20) of the first turntable (22) to the center of gravity of the counterweight (36) is the same. Hubarbeitsbühne nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß die Stützeinrichtung (34) mit der Gelenkverbindung (36) zum Ausleger (38) in der Höhe oberhalb eines normalen lichten Verkehrsraums und in einer zum Arbeitskorb (40) entgegengesetzten Richtung abgekröpft ist.Aerial work platform according to one or more of the preceding claims,
characterized,
that the support device (34) with the articulated connection (36) to the boom (38) is offset at a height above a normal clear traffic space and in a direction opposite to the work basket (40). Hubarbeitsbühne nach Anspruch 14,
dadurch gekennzeichnet,
daß die Abkröpfung bei Längsausrichtung des Auslegers (38) zum Fahrzeug (10) über ein Fahrerhaus (14) ragt, jedoch die Breite der Plattform (12) nicht wesentlich übersteigt.Aerial work platform according to claim 14,
characterized,
that the offset projects with a longitudinal alignment of the boom (38) to the vehicle (10) over a cab (14), but does not significantly exceed the width of the platform (12).
EP97102333A 1996-06-17 1997-02-13 Mobile working platform Expired - Lifetime EP0814052B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29610630U DE29610630U1 (en) 1996-06-17 1996-06-17 Mobile aerial work platform
DE29610630U 1996-06-17

Publications (2)

Publication Number Publication Date
EP0814052A1 true EP0814052A1 (en) 1997-12-29
EP0814052B1 EP0814052B1 (en) 1999-12-01

Family

ID=8025313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102333A Expired - Lifetime EP0814052B1 (en) 1996-06-17 1997-02-13 Mobile working platform

Country Status (7)

Country Link
US (1) US6250423B1 (en)
EP (1) EP0814052B1 (en)
CN (1) CN1093837C (en)
AT (1) ATE187149T1 (en)
DE (2) DE29610630U1 (en)
DK (1) DK0814052T3 (en)
ES (1) ES2139407T3 (en)

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US7055912B2 (en) * 2003-09-23 2006-06-06 Terry Lynn Luscombe Vehicle mounted utility apparatus with quick attachment means
DE10360244A1 (en) * 2003-12-20 2005-07-21 Anton Ruthmann Gmbh & Co. Kg Automotive lifting platform for a truck comprises a rotating tower which hinges on a rolling segment about an axle parallel to the plane of the platform
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US20060032701A1 (en) * 2004-07-29 2006-02-16 Oshkosh Truck Corporation Composite boom assembly
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DE102008013646B3 (en) 2008-03-11 2009-09-24 PB Lifttechnik GmbH, Gassenäcker Self-propelled aerial work platform
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Also Published As

Publication number Publication date
DE29610630U1 (en) 1997-11-13
EP0814052B1 (en) 1999-12-01
CN1171366A (en) 1998-01-28
CN1093837C (en) 2002-11-06
ATE187149T1 (en) 1999-12-15
DE59700785D1 (en) 2000-01-05
US6250423B1 (en) 2001-06-26
DK0814052T3 (en) 2000-05-08
ES2139407T3 (en) 2000-02-01

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