EP0399233A1 - Elevating platform - Google Patents

Elevating platform Download PDF

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Publication number
EP0399233A1
EP0399233A1 EP90107907A EP90107907A EP0399233A1 EP 0399233 A1 EP0399233 A1 EP 0399233A1 EP 90107907 A EP90107907 A EP 90107907A EP 90107907 A EP90107907 A EP 90107907A EP 0399233 A1 EP0399233 A1 EP 0399233A1
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EP
European Patent Office
Prior art keywords
undercarriage
wheels
road
work platform
aerial work
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
EP90107907A
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German (de)
French (fr)
Other versions
EP0399233B1 (en
Inventor
Horst H. Theisen
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Individual
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Individual
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Publication date
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Priority to AT90107907T priority Critical patent/ATE83823T1/en
Publication of EP0399233A1 publication Critical patent/EP0399233A1/en
Application granted granted Critical
Publication of EP0399233B1 publication Critical patent/EP0399233B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism
    • 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
    • B66F11/042—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 actuated by lazy-tongs mechanisms or articulated levers

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Inorganic Insulating Materials (AREA)
  • Handcart (AREA)

Abstract

The invention relates to an elevating platform having an undercarriage (1), at the four corners of which are mounted supporting wheels (2) on which the undercarriage (1) stands and is displaceable during use, two further road wheels (8), suitable for road transport, and which do not touch the ground during use of the undercarriage are fixed to the undercarriage (1) between the supporting wheels (2), the road wheels (8) being able to travel, for road transport, so far downwards relative to the undercarriage (1) that the supporting wheels (2) are lifted from the ground. <IMAGE>

Description

Die Erfindung betrifft eine Hubarbeitsbühne mit einem Unterwagen, an dessen vier Ecken Stützräder gelagert sind, auf denen der Unterwagen während des Einsatzes steht und verschiebar ist, wobei am Unterwagen zwischen den Stützrädern weitere, für den Straßentransport geeignete Straßenräder befestigt sind, die während des Einsatzes des Unterwagens den Boden nicht berührenThe invention relates to an aerial work platform with an undercarriage, on the four corners of which support wheels are mounted, on which the undercarriage stands and can be moved during use, with further undercarriage wheels suitable for road transport being fastened to the undercarriage, which are attached during use of the Do not touch the floor of the undercarriage

Der Unterwagen einer Hubarbeitsbühne wird von vier Stützrädern getragen, die an den vier Ecken des Unterwagens gelagert sind und so verhältnismäßig unachgiebig sein müssen, damit bei angehobener Arbeitsbühne diese nicht schwankt. Hierzu sind die Stützräder meist aus Vollgummi gefertigt. Mit diesen Stützrädern kann die Arbeitsbühne über kurze Entfernungen bewegt werden. Für einen Transport über größere Entfernungen auf Straßen, in dem die Arbeitsbühne als Anhänger an einen Lastkraftwagen befestigt wird, sind diese Stützräder nicht geeignet.The undercarriage of an aerial work platform is supported by four support wheels, which are mounted at the four corners of the undercarriage and must therefore be relatively uncomfortable so that the work platform does not fluctuate when it is raised. For this purpose, the support wheels are usually made of solid rubber. With these support wheels, the working platform can be moved over short distances. These support wheels are not suitable for transport over long distances on roads in which the working platform is attached to a truck as a trailer.

Aus der US-PS 3 516 512 ist es bekannt, zwischen den Stützrädern am Unterwagen zwei weitere, für den Straßentransport geeignete Straßenräder zu befestigen. Für den Arbeitsbetrieb werden die Stützräder durch Spindeln nach unten geschraubt, so daß er Unterwagen zusammen mit den Straßenrädern so weit angehoben wird, daß die Straßenräder den Boden nicht mehr berühren. Eine solche Konstruktion ist konstruktiv und in der Handhabung aufwendig. Darüber hinaus muß für den Straßentransport der Mast abmontiert werden, da die Rühne auf- und abfahrbar ist.From US Pat. No. 3,516,512 it is known to fasten two further road wheels suitable for road transport between the support wheels on the undercarriage. For work, the support wheels are screwed down by spindles so that the undercarriage together with the road wheels is raised so far that the road wheels no longer touch the ground. Such a construction is constructive and difficult to use. In addition, the mast must be removed for road transport, since the platform can be moved up and down.

Aufgabe der Erfindung ist es eine Hubarbeitsbühne der eingangs genannten Art so zu verbessern, daß ein Umstellen vom Einsatzbetrieb zum Straßentransport und umgekehrt bei geringem konstruktiven Aufwand leicht, schnell, einfach und bei größter Sicherheit durchführbar ist.The object of the invention is to improve an aerial work platform of the type mentioned at the outset in such a way that a changeover from operations to road transport and vice versa can be carried out easily, quickly, easily and with the greatest possible safety with little design effort.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Straßenräder gegenüber dem Unterwagen für den Straßentransport so weit nach unten fahrbar sind, daß die Stützräder vom Boden abgehoben sind.According to the invention, this object is achieved in that the road wheels can be moved so far downwards relative to the undercarriage for road transport that the support wheels are lifted off the ground.

Die Stützräder sind gegenüber dem Unterwagen in ihrer Höhe unbeweglich befestigt, so daß im Arbeitsbetrieb höchste Sicherbeit erreichbar ist. Die Straßenräder sind hierbei nach oben gefahren, so daß sie während des Arbeitseinsaztes nicht stören. Soll die Hubarbeitsbühne über größere Entfernungen bewegt werden, so werden die Straßenräder so weit nach unten gefahren, daß die Stützräder vom Boden abgehoben sind. In diesem Zustand kann der Unterwagen als Anhänger an einem Lastkraftwagen befestigt werden.The support wheels are fixed immovably in relation to the undercarriage, so that the highest level of safety can be achieved during work. The road bikes are driven upwards so that they do not interfere during work. If the aerial work platform is to be moved over greater distances, the road wheels are driven down so far that the support wheels are lifted off the ground. In this condition, the undercarriage can be attached to a truck as a trailer.

Konstruktiv besonders vorteilhaft ist es, wenn die Straßenräder an einer Achse befestigt sind, die auf- und ab beweglich, insbesondere verschwenkbar ist. Auch können hierzu vier Straßenräder an dem Unterwagen auf- und ab beweglich befestigt sein. Dabei ist es auch von Vorteil, wenn die vier Straßenräder von einer Tademachse gebildet sind. Solche Tademachsen können bereits fertig von Dritten bezogen werden.It is structurally particularly advantageous if the road wheels are fastened to an axle that can be moved up and down, in particular pivoted. Four road bikes can also be moved up and down on the undercarriage be movably attached. It is also advantageous if the four road bikes are formed by a tadem axis. Such academic axes can already be purchased from third parties.

Eine besonders einfache und sichere Handhabung wird dann erreicht, wenn die Achsen der Straßenräder durch hydraulisch oder pneumatisch betriebene Zylinder-Kolben-Aggregate auf- und ab beweglich sind. Vorzugsweise wird vorgeschlagen, daß die Arbeitsbühne eine Hubvorrichtung mit scherenförmigen Traggliedern aufweist.Particularly simple and safe handling is achieved when the axles of the road wheels can be moved up and down by means of hydraulically or pneumatically operated cylinder-piston units. It is preferably proposed that the work platform has a lifting device with scissor-shaped support members.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.

Es zeigen

  • Figur 1 die Hubarbeitsbühne während des Arbeitseinsatzes mit angehobenen Straßenrädern und
  • Figur 2 die Hubarbeitsbühne für den Straßentransport mit abgesenkten Straßenrädern.
Show it
  • Figure 1 shows the aerial work platform during work with raised road bikes and
  • Figure 2 shows the aerial work platform for road transport with lowered road wheels.

Die Hubarbeitsbühne weist einen Unterwagen 1 auf, an dessen vier Eckenbereichen je ein Stützrad 2 gelagert ist. Diese Stützräder 2 sind gegenüber dem Unterwagen 1 in ihrer Höhe nicht beweglich, d.h. die Achsen der Stützräder 2 können gegenüber dem Unterwagen 1 zumindest in ihrer Höhe nicht verstellt werden.The aerial work platform has an undercarriage 1, on the four corner areas of which a support wheel 2 is mounted. These support wheels 2 are not movable in height with respect to the undercarriage 1, i.e. the axes of the support wheels 2 cannot be adjusted at least in height relative to the undercarriage 1.

Auf der Oberseite des Unterwagens 1 ist eine Hubvorrichtung 3 befestigt, die scherenförmige Hubglieder 4 aufweist, mit denen eine waagerechte Arbeitsbühne 5 auf- und ab beweglich ist. Für diese auf- und ab Bewegung sind an den scherenförmigen Gliedern 4 Zylinder-Kolben-Aggregate 6 befestigt, die hydraulisch oder pneumatisch beaufschlagt sind. Die Arbeitsbühne 5 ist an ihrer Oberseite rundum von einem Geländer 7 umgeben.On the top of the undercarriage 1, a lifting device 3 is attached, which has scissor-shaped lifting members 4, with which a horizontal working platform 5 can be moved up and down. For this up and down movement are attached to the scissor-shaped members 4 cylinder-piston units 6, which are acted upon hydraulically or pneumatically. The top of the work platform 5 is completely surrounded by a railing 7.

An der Unterseite des Unterwagens 1 sind Straßenräder 8 angebracht, deren Achsen parallel zu den Achsen der Stützräder 2 liegen. Die Straßenräder 8 sind gegenüber dem Unterwagen 1 anheb- und absenkbar, wobei in der obersten Stellung die Straßenräder 8 soweit angehoben sind, daß deren Unterseite höher liegt als die Unterseite der Stützräder 2 und im abgesenkten Zustand die Unterseite der Straßenräder 8 tiefer liegen als die Unterseiten der Stützräder 2, so daß im abgesenkten Zustand die Straßenräder 8 den Unterwagen 1 so weit anheben, daß ein ausreichender Abstand zwischen den Stützrädern 2 und dem Straßenbelag ist.On the underside of the undercarriage 1, road wheels 8 are attached, the axes of which are parallel to the axes of the support wheels 2. The road wheels 8 can be raised and lowered relative to the undercarriage 1, the road wheels 8 being raised in the uppermost position to such an extent that their underside is higher than the underside of the support wheels 2 and, in the lowered state, the underside of the road wheels 8 are lower than the undersides the support wheels 2, so that in the lowered state the road wheels 8 raise the undercarriage 1 to such an extent that there is a sufficient distance between the support wheels 2 and the road surface.

Es reicht aus, wenn zwischen den Stützrädern 2 etwa mittig nur ein Paar von Straßenrädern 8 befestigt ist. Eine hohe Tragkraft wird aber dann erreicht, wenn zwei Paar von Straßenrädern 8 an einer Tandemachse befestigt sind.It is sufficient if only a pair of road wheels 8 is fastened between the support wheels 2 approximately in the middle. A high load capacity is achieved when two pairs of road wheels 8 are attached to a tandem axle.

Das eine Paar Straßenräder 8 oder die zwei Paar können durch geeignete Konstruktionen senkrecht auf- und ab beweglich sein. Konstruktiv besonders einfach ist es, wenn die Straßenräder 8 bzw. deren Achsen an den unteren freien Enden verschwenkbarer Arme 9 gelagert sind, die mit ihren oberen Enden am Unterwagen 1 angelenkt sind. Hierbei ist es konstruktiv besonders einfach, wenn die Radachsen bzw. die Arme 9 durch Zylinder-Kolben-Aggregate hydraulisch oder pneumatisch auf- und ab bewegt werden. Da bereits die Arbeitsbühne 5 hydraulisch oder pneumatisch betätigt wird, ist es konstruktiv wenig aufwendig dasselbe Betätigungssystem für das Anheben und Absenken der Straßenräder 8 zu verwenden.The one pair of road bikes 8 or the two pairs can be moved vertically up and down by suitable constructions. It is structurally particularly simple if the road wheels 8 or their axles are mounted on the lower free ends of pivotable arms 9 which are articulated with their upper ends on the undercarriage 1. It is structurally particularly simple if the wheel axles or the arms 9 are moved up and down hydraulically or pneumatically by cylinder-piston units. Since the work platform 5 is already actuated hydraulically or pneumatically, it is structurally inexpensive to use the same actuation system for raising and lowering the road wheels 8.

An der vorderen Seite des Unterwagens 1 ist eine Gabel 10 angelenkt, die an ihrem vorderen freien Ende eine Öse zur Befestigung an einem Zugwagen aufweist.A fork 10 is articulated on the front side of the undercarriage 1 and has an eyelet at its front free end for attachment to a towing vehicle.

Claims (6)

1. Hubarbeitsbühne mit einem Unterwagen (1), an dessen vier Ecken Stützräder (2) gelagert sind, auf denen der Unterwagen (1) während des Einsatzes steht und verschiebbar ist, wobei am Unterwagen (1) zwischen den Stützrädern (2) weitere, für den Straßentransport geeignete Straßenräder (8) befestigt sind, die während des Einsatzes des Unterwagens (1) den Boden nicht berühren, dadurch gekennzeichnet, daß die Straßenräder (8) gegenüber dem Unterwagen (1) für den Straßentransport so weit nach unten fahrbar sind, daß die Stützräder (2) vom Boden abgehoben sind.1. aerial work platform with an undercarriage (1), at the four corners of which support wheels (2) are mounted, on which the undercarriage (1) stands and can be moved during use, the undercarriage (1) between the support wheels (2), Road wheels (8) suitable for road transport are fastened, which do not touch the ground during use of the undercarriage (1), characterized in that the road wheels (8) can be moved downwards as far as the undercarriage (1) for road transport, that the support wheels (2) are lifted off the ground. 2. Hubarbeitsbühne nach Anspruch 1,
dadurch gekennzeichnet, daß die Straßenräder (8) an einer Achse befestigt sind, die auf- und ab beweglich, insbesondere verschwenkbar ist.2. aerial work platform according to claim 1,
characterized in that the road wheels (8) are fastened to an axis which is movable up and down, in particular pivotable. 3. Hubarbeitsbühne nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß vier Straßenräder (8) an dem Unterwagen (1) auf- und ab beweglich befestigt sind.3. aerial work platform according to claim 1 or 2,
characterized in that four road wheels (8) are movably attached to the undercarriage (1) up and down. 4. Hubarbeitsbühne nach Anspruch 3,
dadurch gekennzeichnet, daß die vier Straßenräder (8) von einer Tandemachse gebildet sind.4. aerial work platform according to claim 3,
characterized in that the four road wheels (8) are formed by a tandem axle. 5. Hubarbeitsbühne nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Achsen der Straßenräder (8) durch hydraulisch oder pneumatisch betriebene Zylinder-Kolben-Aggregate aufund ab beweglich sind.5. aerial work platform according to one of the preceding claims,
characterized in that the axles of the road wheels (8) can be moved up and down by hydraulically or pneumatically operated cylinder-piston units. 6. Hubarbeitsbühne nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Arbeitsbühne (5) eine Hubvorrichtung (3) mit scherenförmigen Traggliedern (4) aufweist.6. aerial work platform according to one of the preceding claims,
characterized in that the working platform (5) has a lifting device (3) with scissor-shaped support members (4).
EP90107907A 1989-04-26 1990-04-26 Elevating platform Expired - Lifetime EP0399233B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90107907T ATE83823T1 (en) 1989-04-26 1990-04-26 AERIAL WORK PLATFORM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913645A DE3913645C1 (en) 1989-04-26 1989-04-26
DE3913645 1989-04-26

Publications (2)

Publication Number Publication Date
EP0399233A1 true EP0399233A1 (en) 1990-11-28
EP0399233B1 EP0399233B1 (en) 1992-12-23

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ID=6379439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107907A Expired - Lifetime EP0399233B1 (en) 1989-04-26 1990-04-26 Elevating platform

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Country Link
EP (1) EP0399233B1 (en)
AT (1) ATE83823T1 (en)
DE (2) DE3913645C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2277819A1 (en) * 2009-07-23 2011-01-26 Waldner Labor- und Schuleinrichtungen GmbH Scissor lift device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100914485B1 (en) 2007-11-30 2009-08-28 주식회사 신성에프에이 Work Truck for Establishing Upper Guide Rail

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516512A (en) * 1968-03-06 1970-06-23 Eisenbau Karl Ladwig Bsb Mobile scaffold
US3889778A (en) * 1973-07-26 1975-06-17 Gerald Dean Dotts Platform lift

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317218A1 (en) * 1975-07-07 1977-02-04 Systems Manufacturing Co Lazy-tongs lifting platform mechanism - has ram acting between cross-members of lowermost arms and next ones up (NL110177)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516512A (en) * 1968-03-06 1970-06-23 Eisenbau Karl Ladwig Bsb Mobile scaffold
US3889778A (en) * 1973-07-26 1975-06-17 Gerald Dean Dotts Platform lift

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2277819A1 (en) * 2009-07-23 2011-01-26 Waldner Labor- und Schuleinrichtungen GmbH Scissor lift device

Also Published As

Publication number Publication date
ATE83823T1 (en) 1993-01-15
EP0399233B1 (en) 1992-12-23
DE3913645C1 (en) 1990-10-31
DE59000636D1 (en) 1993-02-04

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