EP0159467B1 - Platform for lifting persons - Google Patents

Platform for lifting persons Download PDF

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Publication number
EP0159467B1
EP0159467B1 EP85100609A EP85100609A EP0159467B1 EP 0159467 B1 EP0159467 B1 EP 0159467B1 EP 85100609 A EP85100609 A EP 85100609A EP 85100609 A EP85100609 A EP 85100609A EP 0159467 B1 EP0159467 B1 EP 0159467B1
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EP
European Patent Office
Prior art keywords
platform
posts
cross
members
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85100609A
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German (de)
French (fr)
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EP0159467A2 (en
EP0159467A3 (en
Inventor
Dieter Prommer
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.)
Lissmac Maschinenbau GmbH
Original Assignee
Lissmac Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to AT85100609T priority Critical patent/ATE48270T1/en
Publication of EP0159467A2 publication Critical patent/EP0159467A2/en
Publication of EP0159467A3 publication Critical patent/EP0159467A3/en
Application granted granted Critical
Publication of EP0159467B1 publication Critical patent/EP0159467B1/en
Expired legal-status Critical Current

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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
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks

Definitions

  • the invention relates to an aerial work platform, in particular a work platform for construction workers, with a height-adjustable work platform connected to stands, the work platform having at least two spaced-apart cross-members which can be connected to one another by longitudinal members, which are height-adjustable via a rack and pinion drive and on rollers on raceways in or on the Stands are guided, and with transport wheels or rollers, the two stands are connected to each other by a cross shaft.
  • Height-adjustable work platforms are already known, e.g. from DE-B-1 904441. through which the worker can choose the working height according to the work to be carried out.
  • the known working platforms have so far only been used for special purposes and in corresponding special designs.
  • When creating buildings or doing other work on buildings, e.g. B. walls, plastering, painting work, etc. is mostly worked with non-adjustable scaffolding or with laboriously adjustable trestles and the like ..
  • Masonry in particular is therefore relatively difficult.
  • the fixed scaffolds often, e.g. B. at the walls, be rebuilt with increasing wall height. This leads to a considerable break in work.
  • the present invention is therefore based on the object to provide an aerial work platform which is easy to handle and which is suitable for many purposes with a robust construction, in particular which can also be transported without great effort or conversions, the required work always being at the desired height should be feasible and the worker should be able to carry out all operations for height adjustment and / or measures for moving the aerial work platform from the work platform if necessary.
  • the aerial work platform according to the invention is very simple and robust in construction, gives the worker the opportunity to always work at the desired height and also to take all measures for the height adjustment of the work platform and / or the implementation of the complete aerial work platform from there.
  • the rack and pinion drive can be activated in any way, e.g. by an electric motor that can be operated by the worker using a corresponding actuation switch or button. Manual operation via a hand crank is also possible. Operation under load is possible, whereby the worker can remain on the platform.
  • cross shaft can be designed as a telescopic propeller shaft for length compensation or for adjusting the distance between the two stands. The same applies to the side members.
  • transport wheels or transport rollers are arranged on the cross members or on parts connected to them on a frame, which are seated in a lower position of the work platform and raise the two columns or the stand in the process, which ensures that the lifting platform is moved or transported another place does not have to be dismantled separately.
  • the aerial work platform can be lifted so that the two columns are clear of the ground even under load. For this purpose, the operator may not even have to descend from the work platform. The entire aerial work platform can then be moved in the horizontal direction.
  • each stand consists of two columns arranged parallel to one another at a short distance, the rollers being guided in lateral tracks between the two columns.
  • roller guide With this type of roller guide, they can roll off in a largely trouble-free manner and without the risk of injury.
  • Another very advantageous embodiment of the invention is that it can be expanded in a modular manner, for which purpose the cross shaft has a connecting part at at least one end and two longitudinal beams can be fastened to at least one stand or a cross member on each side.
  • any aerial work platforms can be connected to one another, with only a single drive being required. From this drive, all extension parts are then connected to the cross shaft by a corresponding connection and thus raised or lowered synchronously.
  • the cross members can be pivoted about the axes of the rollers.
  • the cross beams must have a sufficient width. So that the transport of the aerial work platform is now facilitated and also its storage when not in use, the measure according to the invention can be used a reduction in width can be achieved.
  • the axes of the rollers lie horizontally, so that the cross members can be pivoted about these axes, which results in a corresponding reduction in width.
  • the aerial work platform according to the invention can also be easily moved with a crane. For this it is only necessary that the stands or columns have suspension links at their upper ends and that a longitudinal beam can be fastened centrally above and a second longitudinal beam centrally below between the two stands or columns for transport.
  • the aerial work platform has two stands 1 which are arranged at a distance from one another and each have a cross member 2.
  • the cross members have openings at their ends into which the longitudinal members 3 can be inserted, or hooks into which the longitudinal members 3 can be hung with eyelets (FIG. 2).
  • eyelets FIG. 2.
  • a frame 28 projecting downwards is arranged on the cross member 2 at its outer ends on each side, in which a plurality of transport wheels or transport rollers 29 are mounted. If the work platform, i.e. H. the two cross members 2 and the longitudinal members 3, completely lowered, so the transport rollers 29 sit on the floor. In the event of a further lowering, the two stands 1 are raised and thus come off the floor. In this way, the entire aerial work platform can be moved in the horizontal direction.
  • the height adjustment of the aerial work platform is carried out by a drive gear 30 with a rack 31. This configuration is shown more clearly in FIGS. 3-5.
  • each stand 1 consists of two columns 32A and 32B, which are arranged in parallel and closely spaced apart and have a substantially rectangular cross section.
  • the rollers 15 and 25, which are designed as profile rollers, run between the two columns. In particular, it can be seen from FIG. 5 that this also provides lateral guidance.
  • the axis 11 of the roller 15 is in turn extended and carries the cross member 2.
  • the lower impeller 25 is also supported by bearing plates 33 and 34, which simultaneously form the gear box.
  • the drive torque for height adjustment is initiated via a drive shaft 35.
  • this drive shaft 35 When driven by a motor, this drive shaft 35 is connected to the motor shaft.
  • a manual drive is located on the drive shaft 35 z.
  • a sprocket 36 which is connected via a chain to an upper sprocket 37 arranged on the stand 1 (shown in dashed lines in FIG. 1).
  • the sprocket 37 is driven by a safety crank 38.
  • a pinion 39 which meshes with an intermediate gear 40.
  • the drive wheel 30 On the shaft 41 of the intermediate gear 40 is the drive wheel 30, which meshes with the rack 31.
  • the toothed rack 31 is arranged on the outside of the two columns 32A and is integrally connected to it or firmly connected to it. If the drive gear 30 is now moved via the safety crank 38 or a drive motor, not shown, via the interposed transmission, the supporting part 19, which in this case is formed from the transmission case with the two bearing plates 33 and 34, moves together with the cross member 2 up or down, depending on the direction of rotation.
  • the drive shaft 35 has a connecting piece 42, with which the cross shaft 7, which is designed as a cardan shaft, is connected. In this way, the drive gear 30 in the gear box on the other side, i.e.. H. moved synchronously on the other column 1.
  • the gear box is designed in the same way.
  • the cross shaft 7 will also have on the other side a connection piece (not shown) which can be connected to a further transverse shaft of a part of an aerial work platform designed as a connecting part.
  • this connecting part can consist of a further stand 1 with a cross member 2.
  • the two stands 1 can be provided with crane eyelets 43 on their upper side.
  • crossbars will have to be arranged between the two stands 1 in the lower and in the upper area.
  • the longitudinal beams 3 can be used in a simple manner, which are arranged accordingly in the lower and in the upper part between the two stands 1. This is shown in dashed lines in FIG. 1 for the upper region.
  • the two pillars 32 arranged at a distance from one another can be located in the upper one Area with a horizontal crosspiece 45 to be connected.
  • the cross member 2 or the support member 19 each have an inwardly projecting shoulder 44 on which boards, beams, planks or the like can be placed as a standing surface for the worker.
  • 2 boards can also be placed on the side next to the stands on the cross beams, whereby these can also survive.

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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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

1. Platform for lifting persons, in particular a working platform for building trade workers, comprising a vertically adjustable working platform with associated posts (1), said working platform having at least two cross members (2) which are arranged at a distance from one another and can be interconnected by means of longitudinal members (2), said cross members (3) being vertically adjustable by means of a rack-and-pinion drive (31) and being guided by rollers (15, 25) on tracks (16) in or on the posts (1), and comprising drive wheels or rollers (29), the two posts (1) being connected to one another by means of a cross shaft (7), characterised in that the drive wheels or rollers (29) are arranged on a frame (28) on the cross members (2) or on parts (19) connected to the cross members (2), and in a lower position of the working platform rest on a base and thus raise the two posts (1).

Description

Die Erfindung betrifft eine Hubarbeitsbühne, insbesondere Arbeitsbühne für Bauhandwerker, mit einer höhenverstellbar mit Ständern verbundenen Arbeitsplattform, wobei die Arbeitsplattform wenigstens zwei auf Abstand voneinander angeordnete und durch Längsträger miteinander verbindbare Querträger aufweist, die über einen Zahnstangenantrieb höhenverstellbar und über Laufrollen auf Laufbahnen in oder an dem Ständer geführt sind, und mit Transporträdern oder -rollen, wobei die beiden Ständer durch eine Querwelle miteinander verbunden sind.The invention relates to an aerial work platform, in particular a work platform for construction workers, with a height-adjustable work platform connected to stands, the work platform having at least two spaced-apart cross-members which can be connected to one another by longitudinal members, which are height-adjustable via a rack and pinion drive and on rollers on raceways in or on the Stands are guided, and with transport wheels or rollers, the two stands are connected to each other by a cross shaft.

Es sind bereits höhenverstellbare Arbeitsbühnen bekannt, z.B. aus der DE-B-1 904441. durch die der Arbeiter die Arbeitshöhe entsprechend den vorzunehmenden Arbeiten selbst wählen kann. Die bekannten Arbeitsbühnen sind jedoch bisher nur für Spezialzwecke und in entsprechenden Spezialausführungen verwendet worden. Bei der Erstellung von Gebäuden oder bei sonstigen Arbeiten an Gebäuden, z. B. Mauern, Verputzen, Malerarbeiten usw. wird zumeist mit nichtverstellbaren Gerüsten oder mit auf umständliche Weise zu verstellenden Böcken und dgl. gearbeitet. Für den Arbeiter liegt praktisch kaum die richtige Arbeitshöhe vor. Insbesondere Maurerarbeiten sind deshalb relativ beschwerlich. Außerdem müssen die feststehenden Gerüste häufig, z. B. beim Mauern, mit zunehmender Mauerhöhe umgebaut werden. Dies führt zu einer erheblichen Arbeitsunterbrechung.Height-adjustable work platforms are already known, e.g. from DE-B-1 904441. through which the worker can choose the working height according to the work to be carried out. However, the known working platforms have so far only been used for special purposes and in corresponding special designs. When creating buildings or doing other work on buildings, e.g. B. walls, plastering, painting work, etc. is mostly worked with non-adjustable scaffolding or with laboriously adjustable trestles and the like .. There is practically no right working height for the worker. Masonry in particular is therefore relatively difficult. In addition, the fixed scaffolds often, e.g. B. at the walls, be rebuilt with increasing wall height. This leads to a considerable break in work.

Aus der GB-A-2 067 512 ist eine fahrbare und höhenverstellbare Hubarbeitsbühne bekannt. Auf welche Weise ein Transport der Hubarbeitsbühne erfolgt und wie eine notwendige Arretierdng vorgenommen wird, ist unklar.From GB-A-2 067 512 a mobile and height-adjustable aerial work platform is known. How the aerial work platform is transported and how a necessary locking is carried out is unclear.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Hubarbeitsbühne zu schaffen, die einfach zu handhaben ist und die bei robustem Aufbau für viele Einsatzzwecke geeignet ist, insbesondere die ohne großen Aufwand oder Umbauten auch transportierbar ist, wobei die erforderlichen Arbeiten stets in der gewünschten Höhe durchführbar sein sollen und der Arbeiter in der Lage sein soll, im Bedarfsfalle alle Bedienungen für die Höhenverstellung und/oder Maßnahmen für das Umsetzen der Hubarbeitsbühne von der Arbeitsplattform aus durchzuführen.The present invention is therefore based on the object to provide an aerial work platform which is easy to handle and which is suitable for many purposes with a robust construction, in particular which can also be transported without great effort or conversions, the required work always being at the desired height should be feasible and the worker should be able to carry out all operations for height adjustment and / or measures for moving the aerial work platform from the work platform if necessary.

Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden Teil von Anspruch 1 genannten Merkmale gelöst.According to the invention this object is achieved by the features mentioned in the characterizing part of claim 1.

Die erfindungsgemäße Hubarbeitsbühne ist sehr einfach und robust im Aufbau, gibt dem Arbeiter die Möglichkeit, stets in der gewünschten Höhe zu arbeiten und auch von dort aus alle Maßnahmen für die Höhenverstellung der Arbeitsplattform und/oder das Umsetzen der kompletten Hubarbeitsbühne zu treffen.The aerial work platform according to the invention is very simple and robust in construction, gives the worker the opportunity to always work at the desired height and also to take all measures for the height adjustment of the work platform and / or the implementation of the complete aerial work platform from there.

Der Zahnstangenantrieb kann auf beliebige Weise aktiviert werden, z.B. durch einen Elektromotor, der von dem Arbeiter durch einen entsprechenden Betätigungsschalter oder -knopf bedient werden kann. Ebenso ist auch ein Handbetrieb über eine Handkurbel möglich. Dabei ist jeweils eine Bedienung unter Last möglich, wobei der Arbeiter auf der Plattform bleiben kann.The rack and pinion drive can be activated in any way, e.g. by an electric motor that can be operated by the worker using a corresponding actuation switch or button. Manual operation via a hand crank is also possible. Operation under load is possible, whereby the worker can remain on the platform.

Zur Durchführung einer gleichmäßigen Hubbewegung für beide Querträger der Arbeitsplattform werden diese gemeinsam synchron über den Motor oder den Handantrieb angehoben oder abgesenkt, wobei die Verbindung der beiden Ständer über die Querwelle erfolgt. Dabei kann zum Längenausgleich bzw. zur Abstandseinstellung zwischen den beiden Ständern die Querwelle als teleskopierbare Gelenkwelle ausgebildet sein. Gleiches gilt für die Längsträger.In order to carry out a uniform lifting movement for both cross members of the work platform, these are raised or lowered together synchronously via the motor or the manual drive, the two stands being connected via the cross shaft. The cross shaft can be designed as a telescopic propeller shaft for length compensation or for adjusting the distance between the two stands. The same applies to the side members.

Dadurch, daß an den Querträgern oder an damit verbundenen Teilen an einem Gestell Transporträder oder Transportrollen angeordnet sind, die in einer unteren Position der Arbeitsplattform aufsitzen und die beiden Säulen oder den Ständer dabei anheben, wird erreicht, daß zum Verschieben bzw. Transportieren der Hubarbeitsbühne an eine andere Stelle diese nicht gesondert abgebaut werden muß. Gegebenenfalls kann sogar unter Last die Hubarbeitsbühne so hochgehoben werden, daß die beiden Säulen vom Erdboden frei kommen. Hierzu muß ggf. nicht einmal die Bedienungsperson von der Arbeitsplattform herabsteigen. Anschließend kann die gesamte Hubarbeitsbühne in horizontaler Richtung verfahren werden.Characterized in that transport wheels or transport rollers are arranged on the cross members or on parts connected to them on a frame, which are seated in a lower position of the work platform and raise the two columns or the stand in the process, which ensures that the lifting platform is moved or transported another place does not have to be dismantled separately. If necessary, the aerial work platform can be lifted so that the two columns are clear of the ground even under load. For this purpose, the operator may not even have to descend from the work platform. The entire aerial work platform can then be moved in the horizontal direction.

Nach einem entsprechenden erneuten Anheben der Querträger sitzen die Säulen wieder auf, und die Querträger werden zusammen mit den daran angeordneten Transporträdern wieder angehoben. Auf diese Weise kann ohne besondere Umbauten sofort wieder weitergearbeitet werden.After the crossbeams have been raised again, the columns are seated again and the crossbeams are raised again together with the transport wheels arranged on them. In this way you can continue working immediately without any special modifications.

In einer vorteilhaften Weiterbildung der Erfindung besteht jeder Ständer aus zwei in geringem Abstand parallel zueinander angeordneten Säulen, wobei die Laufrollen in seitlichen Laufbahnen zwischen den beiden Säulen geführt sind.In an advantageous development of the invention, each stand consists of two columns arranged parallel to one another at a short distance, the rollers being guided in lateral tracks between the two columns.

Durch diese Art der Rollenführung können diese weitgehend störungsfrei und ohne die Gefahr von Verletzungen geschützt abrollen.With this type of roller guide, they can roll off in a largely trouble-free manner and without the risk of injury.

Eine weitere sehr vorteilhafte Ausgestaltung der Erfindung besteht darin, daß sie bausteinartig erweiterbar ist, wozu die Querwelle an wenigstens einem Ende ein Anschlußteil aufweist und an wenigstens einem Ständer oder einem Querträger auf jeder Seite zwei Längsträger befestigbar sind.Another very advantageous embodiment of the invention is that it can be expanded in a modular manner, for which purpose the cross shaft has a connecting part at at least one end and two longitudinal beams can be fastened to at least one stand or a cross member on each side.

Auf diese Weise können je nach den Ortsverhältnissen beliebige Hubarbeitsbühnen zu einer Einheit miteinander verbunden werden, wobei nur ein einziger Antrieb erforderlich ist. Von diesem Antrieb aus werden dann sämtliche Erweiterungsteile durch eine entsprechende Verbindung mit der Querwelle verbunden und damit synchron angehoben oder abgesenkt.In this way, depending on the local conditions, any aerial work platforms can be connected to one another, with only a single drive being required. From this drive, all extension parts are then connected to the cross shaft by a corresponding connection and thus raised or lowered synchronously.

Eine sehr vorteilhafte Weiterbildung der Erfindung besteht darin, daß die Querträger um die Achsen der Laufrollen schwenkbar sind. Für eine genügende Arbeitstiefe müssen die Querträger eine ausreichende Breite besitzen. Damit nun der Transport der Hubarbeitsbühne erleichtert wird und auch dessen Lagerung bei Nichtgebrauch, kann durch die erfindungsgemäße Maßnahme eine Reduzierung der Breite erreicht werden. Die Achsen der Laufrollen liegen horizontal, so daß die Querträger um diese Achsen geschwenkt werden können, womit eine entsprechende Reduzierung in der Breite auftritt.A very advantageous development of the invention is that the cross members can be pivoted about the axes of the rollers. For a sufficient working depth, the cross beams must have a sufficient width. So that the transport of the aerial work platform is now facilitated and also its storage when not in use, the measure according to the invention can be used a reduction in width can be achieved. The axes of the rollers lie horizontally, so that the cross members can be pivoted about these axes, which results in a corresponding reduction in width.

Wenn die Querträger nach oben verschwenkt worden sind und dabei an einem Tragteil eine zweite Laufrolle angeordnet ist, ist es zur Durchführung der Verschwenkung des Querträgers lediglich erforderlich, daß die andere Rolle leicht lösbar mit dem Tragteil verbunden ist. Damit nun diese Rolle ihre Lage nach einer Verschwenkung beibehält, sind die beiden Achsen der Rollen über ein Verbindungsteil miteinander verbunden.If the cross member has been pivoted upwards and a second roller is arranged on a support member, it is only necessary to carry out the pivoting of the cross member that the other roller is easily detachably connected to the support member. So that this roller now maintains its position after pivoting, the two axes of the rollers are connected to one another via a connecting part.

Die erfindungsgemäße Hubarbeitsbühne kann auf einfache-Weise auch mit einem Kran versetzt werden. Hierzu ist es lediglich erforderlich, daß die Ständer oder Säulen an ihren oberen Enden Aufhängeglieder aufweisen und daß zum Transport ein Längsträger zentral oben und ein zweiter Längsträger zentral unten zwischen den beiden Ständern oder Säulen befestigbar ist.The aerial work platform according to the invention can also be easily moved with a crane. For this it is only necessary that the stands or columns have suspension links at their upper ends and that a longitudinal beam can be fastened centrally above and a second longitudinal beam centrally below between the two stands or columns for transport.

Nachfolgend ist ein Ausführungsbeispiel anhand der Zeichnung prinzipmäßig beschrieben.An exemplary embodiment is described in principle below with reference to the drawing.

Es zeigt:

  • Figur 1: eine Seitenansicht einer Hubarbeitsbühne in Prinzipdarstellung,
  • Figur 2: eine Frontansicht eines Ständers der Hubarbeitsbühne nach Figur 1,
  • Figur 3: eine Prinzipdarstellung eines Hubantriebes über eine Zahnstange für die Hubarbeitsbühne nach den Figuren 1 und 2 in Seitenansicht,
  • Figur 4: einen Schnitt nach der Linie IV-IV der Figur 3,
  • Figur 5: einen Schnitt nach der Linie V-V der Figur 4 (vergrößert).
It shows:
  • FIG. 1: a side view of an aerial work platform in a basic illustration,
  • FIG. 2: a front view of a stand of the aerial work platform according to FIG. 1,
  • FIG. 3: a schematic representation of a lifting drive via a toothed rack for the aerial work platform according to FIGS. 1 and 2 in a side view,
  • FIG. 4: a section along the line IV-IV of FIG. 3,
  • Figure 5: a section along the line VV of Figure 4 (enlarged).

Die Hubarbeitsbühne weist zwei auf Abstand voneinander angeordnete Ständer 1 auf, die jeweils einen Querträger 2 besitzen. Die Querträger weisen an ihren Enden Durchbrechungen auf, in die Längsträger 3 einschiebbar sind, oder Haken, in die die Längsträger 3 mit Ösen einhängbar sind (Fig. 2). Auf diese Weise ergibt sich ein rechteckiger Rahmen für die Arbeitsplattform, auf die Schalungsbretter oder dgl. aufgelegt werden können.The aerial work platform has two stands 1 which are arranged at a distance from one another and each have a cross member 2. The cross members have openings at their ends into which the longitudinal members 3 can be inserted, or hooks into which the longitudinal members 3 can be hung with eyelets (FIG. 2). In this way, there is a rectangular frame for the work platform on which formwork boards or the like can be placed.

Wie aus den Figuren 1 und 2 ersichtlich ist, ist an dem Querträger 2 jeweils an seinen äußeren Enden auf jeder Seite ein nach unten ragendes Gestell 28 angeordnet, in welchem mehrere Transporträder bzw. Transportrollen 29 gelagert sind. Wird nun über den Antrieb die Arbeitsplattform, d. h. die beiden Querträger 2 und die Längsträger 3, ganz abgesenkt, so sitzen die Transportrollen 29 auf dem Boden auf. Bei einem weiteren Absenken werden die beiden Ständer 1 angehoben und kommen damit vom Boden frei. Auf diese Weise kann die gesamte Hubarbeitsbühne in horizontaler Richtung verschoben werden.As can be seen from FIGS. 1 and 2, a frame 28 projecting downwards is arranged on the cross member 2 at its outer ends on each side, in which a plurality of transport wheels or transport rollers 29 are mounted. If the work platform, i.e. H. the two cross members 2 and the longitudinal members 3, completely lowered, so the transport rollers 29 sit on the floor. In the event of a further lowering, the two stands 1 are raised and thus come off the floor. In this way, the entire aerial work platform can be moved in the horizontal direction.

Die Höhenverstellbarkeit der Hubarbeitsbühne wird durch ein Antriebszahnrad 30 mit einer Zahnstange 31 durchgeführt. Diese Ausgestaltung ist in den Figuren 3-5 deutlicher dargestellt.The height adjustment of the aerial work platform is carried out by a drive gear 30 with a rack 31. This configuration is shown more clearly in FIGS. 3-5.

Wie ersichtlich, besteht jeder Ständer 1 aus zwei parallel in geringem Abstand nebeneinander angeordneten Säulen 32A und 32B von im wesentlichen rechteckigem Querschnitt. Zwischen den beiden Säulen laufen die als Profilrollen ausgebildeten Laufrollen 15 und 25. Insbesondere aus der Fig. 5 ist ersichtlich, daß damit gleichzeitig auch eine Seitenführung gegeben ist. Die Achse 11 der Laufrolle 15 ist wiederum verlängert und trägt den Querträger 2. Über Lagerbleche 33 und 34, welche gleichzeitig den Getriebekasten bilden, ist auch das untere Laufrad 25 gelagert.As can be seen, each stand 1 consists of two columns 32A and 32B, which are arranged in parallel and closely spaced apart and have a substantially rectangular cross section. The rollers 15 and 25, which are designed as profile rollers, run between the two columns. In particular, it can be seen from FIG. 5 that this also provides lateral guidance. The axis 11 of the roller 15 is in turn extended and carries the cross member 2. The lower impeller 25 is also supported by bearing plates 33 and 34, which simultaneously form the gear box.

Das Antriebsmoment zur Höhenverstellbarkeit wird über eine Antriebswelle 35 eingeleitet. Bei einem Antrieb über einen Motor ist diese Antriebswelle 35 mit der Motorwelle verbunden. Bei einem Handantrieb befindet sich auf der Antriebswelle 35 z. B. ein Kettenrad 36, das über eine Kette mit einem oberen an dem Ständer 1 angeordneten Kettenrad 37 (in der Fig. 1 gestrichelt dargestellt) verbunden ist. Das Kettenrad 37 wird über eine Sicherheitskurbel 38 angetrieben.The drive torque for height adjustment is initiated via a drive shaft 35. When driven by a motor, this drive shaft 35 is connected to the motor shaft. In a manual drive is located on the drive shaft 35 z. B. a sprocket 36 which is connected via a chain to an upper sprocket 37 arranged on the stand 1 (shown in dashed lines in FIG. 1). The sprocket 37 is driven by a safety crank 38.

Auf der Antriebswelle 35 bzw. integriert in diese ist ein Ritzel 39, das mit einem Zwischenzahnrad 40 kämmt. Auf der Welle 41 des Zwischenzahnrades 40 befindet sich das Antriebsrad 30, welches mit der Zahnstange 31 kämmt.On the drive shaft 35 or integrated in this is a pinion 39 which meshes with an intermediate gear 40. On the shaft 41 of the intermediate gear 40 is the drive wheel 30, which meshes with the rack 31.

Die Zahnstange 31 ist an den beiden Säulen 32A außen angeordnet und einstückig mit dieser oder fest mit dieser verbunden. Wird nun über die Sicherheitskurbel 38 oder einen nicht dargestellten Antriebsmotor über das dazwischengeschaltete Getriebe das Antriebszahnrad 30 bewegt, so bewegtsich damit das Tragteil 19, welches in diesem Falle aus dem Getriebekasten mit den beiden Lagerblechen 33 und 34 gebildet ist, zusammen mit dem Querträger 2 nach oben oder nach unten, und zwar in Abhängigkeit von der Drehrichtung. Die Antriebswelle 35 besitzt ein Anschlußstück 42, mit welchem die Querwelle 7, welche als Gelenkwelle ausgebildet ist, verbunden ist. Auf diese Weise wird auch das Antriebszahnrad 30 in dem Getriebekasten auf der anderen Seite, d. h. an der anderen Säule 1 synchron bewegt. Der Getriebekasten ist dabei in gleicher Weise ausgebildet.The toothed rack 31 is arranged on the outside of the two columns 32A and is integrally connected to it or firmly connected to it. If the drive gear 30 is now moved via the safety crank 38 or a drive motor, not shown, via the interposed transmission, the supporting part 19, which in this case is formed from the transmission case with the two bearing plates 33 and 34, moves together with the cross member 2 up or down, depending on the direction of rotation. The drive shaft 35 has a connecting piece 42, with which the cross shaft 7, which is designed as a cardan shaft, is connected. In this way, the drive gear 30 in the gear box on the other side, i.e.. H. moved synchronously on the other column 1. The gear box is designed in the same way.

Wenn entsprechende bausteinartige Verlängerungen der Hubarbeitsbühne gewünscht sind, wird die Querwelle 7 auch auf der anderen Seite ein - nicht dargestelltes - Anschlußstück besitzen, das mit einer weiteren Querwelle eines als Anschlußteil ausgebildeten Teiles einer Hubarbeitsbühne verbindbar ist. Dieses Anschlußteil kann in diesem Falle aus einem weiteren Ständer 1 mit einem Querträger 2 bestehen.If appropriate modular extensions of the aerial work platform are desired, the cross shaft 7 will also have on the other side a connection piece (not shown) which can be connected to a further transverse shaft of a part of an aerial work platform designed as a connecting part. In this case, this connecting part can consist of a further stand 1 with a cross member 2.

Zu Transportzwecken mit einem Kran können die beiden Ständer 1 auf ihrer Oberseite mit Kranösen 43 versehen sein. Aus Stabilitätsgründen wird man in diesem Falle zwischen den beiden Ständern 1 im unteren und im oberen Bereich Querstangen anordnen müssen. In einfacher Weise können hierzu die Längsträger 3 verwendet werden, welche entsprechend im unteren und im oberen Teil zwischen den beiden Ständern 1 angeordnet werden. Dies ist in der Figur 1 für den oberen Bereich gestrichelt dargestellt. Zur Befestigung der Kranösen 43 und zur Stabilisierung der beiden Säulen können die beiden auf Abstand zueinander angeordneten Säulen 32 im oberen Bereich mit einem horizontalen Querstück 45 miteinander verbunden sein.For transport purposes with a crane, the two stands 1 can be provided with crane eyelets 43 on their upper side. In this case, for reasons of stability, crossbars will have to be arranged between the two stands 1 in the lower and in the upper area. For this purpose, the longitudinal beams 3 can be used in a simple manner, which are arranged accordingly in the lower and in the upper part between the two stands 1. This is shown in dashed lines in FIG. 1 for the upper region. To attach the crane eyelets 43 and to stabilize the two pillars, the two pillars 32 arranged at a distance from one another can be located in the upper one Area with a horizontal crosspiece 45 to be connected.

Zentral zwischen den beiden Ständern 1 weist der Querträger 2 oder das Tragteil 19 jeweils einen nach innen ragenden Absatz 44 auf, auf den Bretter, Balken, Dielen oder dgl. als Standfläche für den Arbeiter aufgelegt werden können. Ebenso können auch seitlich neben den Ständern auf die Querträger 2 Bretter aufgelegt werden, wobei diese auch überstehen können.Central between the two stands 1, the cross member 2 or the support member 19 each have an inwardly projecting shoulder 44 on which boards, beams, planks or the like can be placed as a standing surface for the worker. Likewise, 2 boards can also be placed on the side next to the stands on the cross beams, whereby these can also survive.

Claims (6)

1. Platform for lifting persons, in particular a working platform for building trade workers, comprising a vertically adjustable working platform with associated posts (1), said working platform having at least two cross members (2) which are arranged at a distance from one another and can be interconnected by means of longitudinal members (2), said cross members (3) being vertically adjustable by means of a rack-and-pinion drive (31) and being guided by rollers (15, 25) on tracks (16) in or on the posts (1), and comprising drive wheels or rollers (29), the two posts (1) being connected to one another by means of a cross shaft (7), characterised in that the drive wheels or rollers (29) are arranged on a frame (28) on the cross members (2) or on parts (19) connected to the cross members (2), and in a lower position of the working platform rest on a base and thus raise the two posts (1).
2. Platform for lifting persons according to claim 1, characterised in that the posts (1) have two vertical supports (32A, 32B) arranged in parallel and at a distance from one another, the rollers (15, 25) running in lateral tracks (16) between the two supports.
3. Platform for lifting persons according to claim 1 or 2, characterised in that the cross shaft is a telescopic universal joint shaft (7) and that the longitudinal members (3) are extensible.
4. Platform for lifting persons according to one of claims 1 to 3, characterised in that it is modular, to which end the cross shaft (7) has a connecting piece (42) on at least one end, and two longitudinal members (3) can be secured to each side of at least one post (1) or one cross member (2).
5. Platform for lifting persons according to one of claims 1 to 4, characterised in that the cross members (2) can each pivot about the axis (11) of a roller (15).
6. Platform for lifting persons according to one of claims 1 to 5, characterised in that the posts (1) or supports (32A, 32B) have suspension members (43) at their upper ends and that for transportation purposes two longitudinal members (3) can be secured between the two posts (1) or supports (32A, 32B), one longitudinal member (3) being arranged centrally at the top, and the other longitudinal member (3) being arranged centrally at the bottom.
EP85100609A 1984-04-21 1985-01-22 Platform for lifting persons Expired EP0159467B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85100609T ATE48270T1 (en) 1984-04-21 1985-01-22 AERIAL WORK PLATFORM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3415074 1984-04-21
DE19843415074 DE3415074A1 (en) 1984-04-21 1984-04-21 LIFTING LIFT

Publications (3)

Publication Number Publication Date
EP0159467A2 EP0159467A2 (en) 1985-10-30
EP0159467A3 EP0159467A3 (en) 1987-03-25
EP0159467B1 true EP0159467B1 (en) 1989-11-29

Family

ID=6234146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100609A Expired EP0159467B1 (en) 1984-04-21 1985-01-22 Platform for lifting persons

Country Status (3)

Country Link
EP (1) EP0159467B1 (en)
AT (1) ATE48270T1 (en)
DE (1) DE3415074A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3502002C3 (en) * 1985-01-22 1997-09-04 Lissmac Maschb & Diamantwerkz Aerial work platform
DE4406987C1 (en) * 1994-03-03 1995-07-06 Paul Lingen Lift scaffolding with several masts standing on at least one platform
CN111764613A (en) * 2020-06-19 2020-10-13 四川远大欣程环保工程有限公司 High-altitude equipment installation device in rail traveling area of rail transit engineering and construction method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1474249A (en) * 1922-07-17 1923-11-13 Ferrero John Adjustable platform
US3169604A (en) * 1963-05-29 1965-02-16 Gerald H Pranger Scaffold
AR195668A1 (en) * 1971-05-10 1973-10-31 Ready Co MODULAR AND FOLDING SCAFFOLD
US3851728A (en) * 1973-04-11 1974-12-03 Lowell A Williams Scaffold
FR2261387A1 (en) * 1974-02-18 1975-09-12 Petralli Jean Marie Hand operated overhead working platform - winding gear inside cage, guide rollers steady descent, cage carries hooked arms for safety
GB2067512A (en) * 1980-01-16 1981-07-30 Emmerson D Improvements in or relating to platform towers

Also Published As

Publication number Publication date
EP0159467A2 (en) 1985-10-30
EP0159467A3 (en) 1987-03-25
DE3415074A1 (en) 1985-10-24
ATE48270T1 (en) 1989-12-15

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