EP0664767A1 - Flat-structure lifting platform - Google Patents

Flat-structure lifting platform

Info

Publication number
EP0664767A1
EP0664767A1 EP94922348A EP94922348A EP0664767A1 EP 0664767 A1 EP0664767 A1 EP 0664767A1 EP 94922348 A EP94922348 A EP 94922348A EP 94922348 A EP94922348 A EP 94922348A EP 0664767 A1 EP0664767 A1 EP 0664767A1
Authority
EP
European Patent Office
Prior art keywords
arm
lifting
base frame
lifting arm
lever
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
EP94922348A
Other languages
German (de)
French (fr)
Other versions
EP0664767B1 (en
Inventor
Willy Ackermann
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.)
Ackermann Inter Ltd
Original Assignee
Ackermann Inter Ltd
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.)
Filing date
Publication date
Application filed by Ackermann Inter Ltd filed Critical Ackermann Inter Ltd
Publication of EP0664767A1 publication Critical patent/EP0664767A1/en
Application granted granted Critical
Publication of EP0664767B1 publication Critical patent/EP0664767B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • 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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0641—Single levers, e.g. parallel links

Definitions

  • the invention relates to a flat lifting platform with a lifting plate which is articulated to a lifting arm pivotally supported on the base frame, the lifting arm being pivotable about an articulation axis on the base frame via a drive engaging the lifting arm and the drive also being connected via a handlebar a pivot point above the pivot axis of the lifting arm on the base frame is connected to the lifting arm, which is higher than the point of attack of the drive on the handlebar when the lifting arm is in the retracted position.
  • Lifting platforms which are to be designed in such a way that when the platform or lifting plate is in the retracted position there are no parts projecting upward above the cubic plate are known, for example, from WO 89/11437 or WO 89/11438.
  • These known devices are movable devices with which a motor vehicle can be raised by a predetermined stroke, for example for changing a tire.
  • the known constructions require a relatively large drive if loads are to be lifted out of the extended position of the drive. With devices of this type, a load is usually only gripped and lifted after a predetermined stroke.
  • Another lifting platform makes it possible to lift a platform with scissors using hydraulic cylinder-piston units which are arranged essentially parallel to a floor level.
  • scissor lifts of this type the introduction of force in a first phase of the extension movement is relatively unfavorable, so that a relatively high overall height is required in order to be able to lift loads even from the retracted position.
  • the aim of the invention is now to create a flat lift of the type mentioned at the outset, in which large loads can be safely lifted away from the fully retracted position with a considerably lower overall height and smaller drive units.
  • the flat design is intended in particular to enable a lifting platform of this type to be retrofitted in floor constructions or ceiling constructions of a workshop, without the need for reinforcement of the floor or ceiling, and without openings in the floor or Ceiling are required to create the space required for the drive units.
  • the lifting platform essentially consists in that the handlebar is designed as a two-armed pivotable lever in the manner of a toggle lever, the pivot axis of which lies between the free ends of the two-armed lever and can be pivoted in the height direction on the base frame via at least one other link is supported.
  • the drive is connected to the lift arm via a link with a linkage above the pivot axis of the lifting arm on the base frame, a kind of toggle lever is formed, with a first when the drive is extended under the toggle action of this link Partial pivoting of the lifting arm is made.
  • the translation of the toggle lever allows a much smaller drive and thus a flatter construction if the drive is to be accommodated in the base frame and under the lifting plate.
  • the drive acts on the handlebar on the lifting arm below the articulation point of the handlebar and in that the same drive acts on the lifting arm with its other end,
  • the drive can preferably be driven by a hydraulic cylinder piston
  • This articulation point can, however, also be guided in an elongated hole parallel to the floor level or secured against rising by stops.
  • the design is now such that the handlebar is designed as a two-armed pivotable lever, the pivot axis of which is pivotally supported on the base frame in the height direction by at least one further link.
  • the handlebar is designed as a two-armed pivotable lever, the pivot axis of which is pivotally supported on the base frame in the height direction by at least one further link.
  • 30 is sufficient if the lower end of the handlebar is slidably guided in the base frame in order to achieve the desired toggle action.
  • the toggle action and operational safety can be significantly improved by a pivotable articulation, the advantageous translation of the toggle mechanism being effective over a longer pivoting path of the lifting arm in that at least one further link is pivotally supported on the base frame in the vertical direction.
  • the design is advantageously made such that the lifting plate is connected to a link parallel to the lifting arm and is guided parallel to the floor level.
  • the design is advantageously made such that the articulation point of the two-armed lever is in the retracted position of the lifting plate above the articulation point for the attack of the hydraulic Zylinderkolben ⁇ aggregates. In this way, kinematics are ensured.
  • a particularly compact design can be achieved by the fact that the handlebar (s) for supporting the two-armed lever is (are) articulated on the base frame coaxially to the pivot axis of the parallelogram handlebar of the lifting plate.
  • FIG. 1 shows a side view of the lifting platform with the side wall removed in the retracted position of the lifting plate and in the end position; 2 shows an analog representation with the lifting plate half raised and FIG. 3 shows a plan view of the representation of FIG. 1 at a point below the lifting plate.
  • Fig. 1, 1 is a handlebar designed as a two-armed lever, which acts as a toggle lever.
  • Handlebar 1 is pivotally attached to the base frame via two further links 2, the pivot axis being designated by 3.
  • a hydraulic cylinder piston unit 5 is pivoted about a pivot axis 4, the other free end of which engages on a lifting arm 7 such that it can pivot about a pivot axis 6.
  • the lifting arm 7 is attached to the base frame so that it can pivot about the axis 8.
  • the second free end of the two-armed lever 1 engages on the lifting arm 7 via an articulation point 9.
  • a link 10 can also be seen, which together with the lifting arm 7 results in a parallel guidance of the lifting plate 11, the parallelogram links 7 and 10 being connected to the lifting plate 11 via the pivot axes 12 and 13. The links 7 and 10 thus guide the lifting plate 11 parallel to the plane of the base frame.
  • FIG. 3 shows that the articulation axis 3 of the link 2 essentially coincides with the articulation axis of the parallelogram link 10.
  • REPLACEMENT BLA ⁇ (RULE 26) falls, whereby a particularly compact design is achieved.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
  • Transmission Devices (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

PCT No. PCT/IB94/00253 Sec. 371 Date Mar. 16, 1995 Sec. 102(e) Date Mar. 16, 1995 PCT Filed Aug. 10, 1994 PCT Pub. No. WO95/04698 PCT Pub. Date Feb. 16, 1995The flat lift assembly has a lift platform (11), which is articulated on a base frame via a pivotable lifting arm (7). For the pivot drive of the lifting arm (7) an arm (1) and a cylinder-piston unit (5) are provided, wherein the arm (2) is acting as an articulated lever and this articulated lever is supported via an arm (2) on the base frame. The joint (9) of the arm (1) on the lifting arm (7) lies in the reeled-in position of the lifting arm (7) higher than the joint (4) of the cylinder-piston unit (5) on the arm (1). The arm (1) is formed as a pivotable two-armed lever in the form of an articulated lever, whose pivot axis lying between the free ends of the two-armed lever is pivotably supported at the base frame via at least one further arm (2) in height direction.

Description

Flachbauende HebebühneLow-profile lift
Die Erfindung bezieht sich auf eine flachbauende Hebebühne mit einer Hubplatte, welche an einem am Grundrahmen schwenkbar ab- gestützten Hubarm gelenkig angeschlossen ist, wobei der Hubarm über einen am Hubarm angreifenden Antrieb um eine Anlenkachse am Grundrahmen verschwenkbar ist und wobei der Antrieb über einen Lenker mit einer Anlenkstelle oberhalb der Schwenkachse des Hubarmes am Grundrahmen mit dem Hubarm verbunden ist, wel- ehe bei eingefahrener Position des Hubarmes höher liegt als die Angri fstelle des Antriebes am Lenker.The invention relates to a flat lifting platform with a lifting plate which is articulated to a lifting arm pivotally supported on the base frame, the lifting arm being pivotable about an articulation axis on the base frame via a drive engaging the lifting arm and the drive also being connected via a handlebar a pivot point above the pivot axis of the lifting arm on the base frame is connected to the lifting arm, which is higher than the point of attack of the drive on the handlebar when the lifting arm is in the retracted position.
Hebebühnen, welche so ausgebildet sein sollen, daß bei einge¬ fahrener Position der Plattform bzw. Hubplatte keine über die Kubplatte nach oben vorragende Teile verbleiben, sind bei¬ spielsweise aus der WO 89/11437 oder der WO 89/11438 bekannt¬ geworden. Bei diesen bekannten Einrichtungen handelt es sich um verfahrbare Einrichtungen, mit welchen ein Anheben eines Kraftfahrzeuges um einen vorbestimmten Hub, beispielweise zum Reifenwechsel, ermöglicht wird. Die bekannten Konstruktionen benötigen eine- relativ großen Antrieb, wenn aus der Streck- lage des Antriebes heraus bereits Lasten angehoben werden sollen. Üblicherweise wird mit derartigen Einrichtungen eine Last erst nach einem vorbestimmten Hub ergriffen und angeho- ben.Lifting platforms which are to be designed in such a way that when the platform or lifting plate is in the retracted position there are no parts projecting upward above the cubic plate are known, for example, from WO 89/11437 or WO 89/11438. These known devices are movable devices with which a motor vehicle can be raised by a predetermined stroke, for example for changing a tire. The known constructions require a relatively large drive if loads are to be lifted out of the extended position of the drive. With devices of this type, a load is usually only gripped and lifted after a predetermined stroke.
Eine weitere Hebebühne, wie sie aus der DE-OS 36 04 456 be¬ kanntgeworden ist, erlaubt es mit hydraulischen Zylinderkol¬ benaggregaten, welche im wesentlichen parallel zu einer Boden- ebene angeordnet sind, über Scheren eine Plattform anzuheben. Bei derartigen Scherenhebebühnen ist die Krafteinleitung in einer ersten Phase der Ausfahrbewegung relativ ungünstig, so- daß eine relativ hohe Bauhöhe erforderlich ist, um auch von der eingefahrenen Position weg bereits Lasten anheben zu kön- nen. Analoges gilt für die mit Parallelogrammlenkern geführten Hubplatten, wie sie aus der US-PS 3 865 214 und der US- PS 5 040 637 bekanntgeworden sind. Auch bei derartigen Hub- platten, deren Parallelführung zum Boden durch Parallelograπtm- lenker sichergestellt wird, ist die Krafteinleitung in einem ersten Teilbereich der Hubbewegung überaus ungünstig, sodaß große Lasten nur dann angehoben werden können, wenn eine re- lativ große Bauhöhe und ein überdimensionierter Antrieb vor¬ gesehen wird.Another lifting platform, as is known from DE-OS 36 04 456, makes it possible to lift a platform with scissors using hydraulic cylinder-piston units which are arranged essentially parallel to a floor level. With scissor lifts of this type, the introduction of force in a first phase of the extension movement is relatively unfavorable, so that a relatively high overall height is required in order to be able to lift loads even from the retracted position. The same applies to the lifting plates guided with parallelogram links, as have become known from US Pat. No. 3,865,214 and US Pat. No. 5,040,637. Even with such lifting plates, the parallel guidance to the floor of which is ensured by parallelogram links, the introduction of force in a first partial area of the lifting movement is extremely unfavorable, so that large loads can only be raised if a relatively large overall height and an oversized drive are provided.
Die Erfindung zielt nun darauf ab, eine flachbauende Hebebühne der eingangs genannten Art zu schaffen, bei welcher mit we- sentlich geringerer Bauhöhe und kleinernen Antriebsaggregaten von der voll eingefahrenen Stellung weg bereits große Lasten sicher angehoben werden können. Die flache Bauweise soll hie- bei insbesondere ermöglichen, daß eine derartige Hebebühne auch nachträglich in Bodenkonstruktionen bzw. Deckenkonstruk¬ tionen einer Werkstätte eingebaut werden kann, ohne daß hiefür eine Verstärkung des Bodens bzw. der Decke erforderlich ist, und ohne daß Durchbrüche in Boden oder Decke erforderlich sind um den für die Antriebsaggregate benötigten Platz zu schaffen.The aim of the invention is now to create a flat lift of the type mentioned at the outset, in which large loads can be safely lifted away from the fully retracted position with a considerably lower overall height and smaller drive units. The flat design is intended in particular to enable a lifting platform of this type to be retrofitted in floor constructions or ceiling constructions of a workshop, without the need for reinforcement of the floor or ceiling, and without openings in the floor or Ceiling are required to create the space required for the drive units.
zur Lösung dieser Aufgabe besteht die erfindungsgemäße Hebe¬ bühne im wesentlichen darin, daß der Lenker als zweiarmiger schwenkbarer Hebel nach Art eines Kniehebels ausgebildet ist, dessen zwischen den freien Enden des zweiarmigen Hebels lie¬ gende Schwenkachse über wenigstens einen weiteren Lenker in Höhenrichtung schwenkbar am Grundrahmen abgestützt ist. Dadurch, daß der Antrieb über einen Lenker mit einer Anlenk- steile oberhalb der Schwenkachse des Hubarmes am Grundrahmen mit dem Hubarm verbunden ist, wird eine Art Kniehebel ausge¬ bildet, wobei dann, wenn der Antrieb ausgefahren wird zunächst unter der Kniehebelwirkung dieses Lenkers eine erste Teilver¬ schwenkung des Hubarmes vorgenommen wird. Die Übersetzung des Kniehebels erlaubt hier einen wesentlich kleiner bauenden An¬ trieb und dadurch eine flachere Konstruktion, wenn der Antrieb im Grundrahmen und unter der Hubplatte untergebracht werden soll. Dadurch, daß der Antrieb unterhalb der Anlenkstelle des Lenkers am Hubarm am Lenker angreift und dadurch, daß der gleiche Antrieb mit seinem anderen Ende am Hubarm angreift,To solve this problem, the lifting platform according to the invention essentially consists in that the handlebar is designed as a two-armed pivotable lever in the manner of a toggle lever, the pivot axis of which lies between the free ends of the two-armed lever and can be pivoted in the height direction on the base frame via at least one other link is supported. Characterized in that the drive is connected to the lift arm via a link with a linkage above the pivot axis of the lifting arm on the base frame, a kind of toggle lever is formed, with a first when the drive is extended under the toggle action of this link Partial pivoting of the lifting arm is made. The translation of the toggle lever allows a much smaller drive and thus a flatter construction if the drive is to be accommodated in the base frame and under the lifting plate. Characterized in that the drive acts on the handlebar on the lifting arm below the articulation point of the handlebar and in that the same drive acts on the lifting arm with its other end,
ERSATZBLÄΓT (REGEL 26) wird sichergestellt, daß die Anlenkstelle des Antriebes am Lenker aufgrund der Krafteinleitung immer in Richtung zum Grundrahmen beaufschlagt wird, wohingegen das andere Ende des Lenkers, welches oberhalb dieser Anlenkstelle am Hubarm ange-SPARE BLADE (RULE 26) it is ensured that the linkage of the drive on the handlebar is always acted on in the direction of the base frame due to the application of force, whereas the other end of the link, which is attached to the lift arm above this linkage
*-> schlagen ist bei einer Verschiebung der unteren Anlenkstelle des Lenkers in einer Richtung, welche im wesentlichen parallel zum Grundrahmen verlaufen kann, nach oben ausweicht, wodurch der erste Teil der Schwenkbewegung des Hubarmes eingeleitet wird. Eine derartige Kniehebelkonstruktion erlaubt somit eine* -> hit is at a displacement of the lower link point of the handlebar in a direction that can run essentially parallel to the base frame, upwards, whereby the first part of the pivoting movement of the lifting arm is initiated. Such a toggle lever construction thus allows one
10 wesentlich günstigere Krafteinleitung, sowie eine Übersetzung im ersten Teilbereich des Schwenkweges, wodurch insgesamt we¬ sentlich flacher gebaut werden kann und mit kleineren An¬ triebsaggregaten das Auslangen gefunden wird. Der Antrieb kann hierbei bevorzugt von einem hydraulischen Zylinderkolben-10 much cheaper introduction of force, as well as a translation in the first section of the swivel path, as a result of which it is possible to build much flatter overall and with smaller drive units it is sufficient. The drive can preferably be driven by a hydraulic cylinder piston
15 aggregat gebildet werden, wobei naturgemäß auch andere Formen des Linearantriebes, wie beispielsweise Spindelantriebe od. dgl. ohne weiteres denkbar sind. Die Anlenkstelle des als Kniehebel wirksamen Lenkers an dem Antrieb wird aufgrund ihrer Lage immer in Anlage an den Grundrahmen gehalten, wenn der An-15 aggregate are formed, but naturally other forms of linear drive, such as spindle drives or the like. Are easily conceivable. Due to its position, the articulation point of the handlebar acting as a toggle lever on the drive is always held in contact with the base frame when the attachment
20 trieb betätigt wird. Diese Anlenkstelle kann aber auch in einem zur Bodenebene parallelen Langloch geführt sein oder durch Anschläge gegen ein Aufsteigen gesichert werden.20 drive is operated. This articulation point can, however, also be guided in an elongated hole parallel to the floor level or secured against rising by stops.
Erfindungsgemäß ist nun die Ausbildung so getroffen, daß der 25 Lenker als zweiarmiger schwenkbarer Hebel ausgebildet ist, dessen Schwenkachse über wenigstens einen weiteren Lenker in Höhenrichtung schwenkbar am Grundrahmen abgestützt ist. Prin¬ zipiell genügt aufgrund der Lage der Anlenkstelle des Lenkers am Hubarm und am Antrieb in völlig eingefahrener Position, 30 wenn das untere Ende des Lenkers gleitend im Grundrahmen geführt ist, um die gewünschte Kniehebelwirkung zu erzielen. Die Kniehebelwirkung und die Betriebssicherheit lassen sich aber durch eine schwenkbare Anlenkung wesentlich verbessern, wobei dadurch, daß wenigstens ein weiterer Lenker in Höhen- 35 richtung schwenkbar am Grundrahmen abgestützt ist, über einen längeren Schwenkweg des Hubarmes die vorteilhafte Übersetzung des Kniehebelgetriebes zur Wirkung gelangt.According to the invention, the design is now such that the handlebar is designed as a two-armed pivotable lever, the pivot axis of which is pivotally supported on the base frame in the height direction by at least one further link. In principle, due to the position of the linkage of the handlebar on the lifting arm and on the drive in a fully retracted position, 30 is sufficient if the lower end of the handlebar is slidably guided in the base frame in order to achieve the desired toggle action. The toggle action and operational safety can be significantly improved by a pivotable articulation, the advantageous translation of the toggle mechanism being effective over a longer pivoting path of the lifting arm in that at least one further link is pivotally supported on the base frame in the vertical direction.
ERSATZBLÄTT(REGEL26) Um eine Parallelführung der Hubplatte zur Ebene des Grundrah¬ mens zu gewährleisten, ist mit Vorteil die Ausbildung so ge¬ troffen, daß die Hubplatte mit einem zum Hubarm parallelen 5 Lenker verbunden und zur Bodenebene parallel geführt ist.SPARE BLADE (RULE 26) In order to ensure parallel guidance of the lifting plate to the level of the base frame, the design is advantageously made such that the lifting plate is connected to a link parallel to the lifting arm and is guided parallel to the floor level.
Um sicherzustellen, daß bei Einschalten des Antriebes bei voll eingefahrener Position des Hubarmes die gewünschte Verschwen- kung des Kniehebels und der Schwenkachse des als zweiarmigerTo ensure that when the drive is switched on with the lifting arm in the fully retracted position, the desired pivoting of the toggle lever and the pivot axis of the two-armed
10 Hebel ausgebildeten Kniehebels eintritt, ist mit Vorteil die Ausbildung so getroffen, daß die Anlenkstelle des zweiarmigen Hebels bei eingefahrener Position der Hubplatte oberhalb der Anlenkstelle für den Angriff des hydraulischen Zylinderkolben¬ aggregates liegt. Auf diese Weise wird eine Kinematik sicher-10 lever trained knee lever occurs, the design is advantageously made such that the articulation point of the two-armed lever is in the retracted position of the lifting plate above the articulation point for the attack of the hydraulic Zylinderkolben¬ aggregates. In this way, kinematics are ensured.
-***-*-1 gestellt, bei welcher auch bei kleinbauendem und kleindimen¬ sioniertem Antrieb aus der voll eingefahrenen Position hohe Hebekräfte wirksam werden können.- * * * - * - 1 , in which high lifting forces can also be effective from the fully retracted position even in the case of a small-sized and small-sized drive.
Eine konstruktiv besonders kompakte Bauweise kann hiebei da- 20 durch erzielt werden, daß der oder die Lenker zur Abstützung des zweiarmigen Hebels koaxial zur Schwenkachse des Parallelo- grammlenkers der Hubplatte am Grundrahmen angelenkt ist (sind) .A particularly compact design can be achieved by the fact that the handlebar (s) for supporting the two-armed lever is (are) articulated on the base frame coaxially to the pivot axis of the parallelogram handlebar of the lifting plate.
25 Die Erfindung wird nachfolgend anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläu¬ tert.The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing.
In dieser zeigen: Fig. 1 eine Seitenansicht der Hebebühne bei 30 abgenommener Seitenwand in der eingefahrenen Stellung der Hub¬ platte und in der Endstellung; Fig. 2 eine analoge Darstellung bei halb angehobener Hubplatte und Fig.3 eine Draufsicht auf die Darstellung der Fig. 1 an einer Stelle unterhalb der Hub¬ platte.1 shows a side view of the lifting platform with the side wall removed in the retracted position of the lifting plate and in the end position; 2 shows an analog representation with the lifting plate half raised and FIG. 3 shows a plan view of the representation of FIG. 1 at a point below the lifting plate.
3535
In Fig. 1 ist mit 1 ein als zweiarmiger Hebel ausgebildeter Lenker ersichtlich, welcher als Kniehebel wirksam wird. DerIn Fig. 1, 1 is a handlebar designed as a two-armed lever, which acts as a toggle lever. The
ERSATZBLAπ(REGEL26) Lenker 1 ist über zwei weitere Lenker 2 am Grundrahmen schwenkbar angeschlagen, wobei die Schwenkachse mit 3 bezeichnet ist. An einem freien Ende des zweiarmigen Hebels 1 ist um eine Schwenkachse 4 schwenkbar ein hydraulisches Zylin- derkolbenaggregat 5 angeschlagen, dessen anderes freies Ende um eine Schwenkachse 6 schwenkbar an einem Hubarm 7 angreift. Der Hubarm 7 ist um die Achse 8 schwenkbar am Grundrahmen an¬ geschlagen. Das zweite freie Ende des zweiarmigen Hebels 1 greift über eine Anlenkstelle 9 am Hubarm 7 an. Es ist weiters ein Lenker 10 ersichtlich, welcher gemeinsam mit dem Hubarm 7 eine Parallelführung der Hubplatte 11 ergibt, wobei die Pa¬ rallelogrammlenker 7 und 10 über die Schwenkachsen 12 und 13 mit der Hubplatte 11 verbunden sind. Die Lenker 7 und 10 füh¬ ren somit die Hubplatte 11 parallel zur Ebene des Grund- rahmens.REPLACEMENT BLAπ (RULE 26) Handlebar 1 is pivotally attached to the base frame via two further links 2, the pivot axis being designated by 3. At a free end of the two-armed lever 1, a hydraulic cylinder piston unit 5 is pivoted about a pivot axis 4, the other free end of which engages on a lifting arm 7 such that it can pivot about a pivot axis 6. The lifting arm 7 is attached to the base frame so that it can pivot about the axis 8. The second free end of the two-armed lever 1 engages on the lifting arm 7 via an articulation point 9. A link 10 can also be seen, which together with the lifting arm 7 results in a parallel guidance of the lifting plate 11, the parallelogram links 7 and 10 being connected to the lifting plate 11 via the pivot axes 12 and 13. The links 7 and 10 thus guide the lifting plate 11 parallel to the plane of the base frame.
Wie sich aus Fig. 1 in Kombination mit Fig. 2 deutlich ergibt, erfolgt bei einem Beaufschlagen des Zylinderkolbenaggregates 5 zunächst eine Verschiebung des als Kniehebel wirksamen zwei- armigen Hebels 1. Bei dieser Verschiebung werden gleichzeitig die Lenker 2 um ihre Schwenkachse 3 verschwenkt, sodaß der als Kniehebel wirksame erste zweiarmige Hebel 1 insgesamt in eine höhere Position verschwenkt wird, wodurch die Krafteinleitung in den Hubarm 7 weiter verbessert wird. Bei einer Verschwen- kung des zweiarmigen Hebels 1 und damit des Hubarmes 7 ver¬ schwenkt naturgemäß auch die Anlenkachse 6 des als hydrauli¬ sches Zylinderkolbenaggregat ausgebildeten Antriebes 5, wo¬ durch die Krafteinleitung sukzessive immer besser wird. Die günstigste Krafteinleitung wird der in Fig. 1 strichliert dargestellten Endstellung erzielt, in welcher das Zylinder¬ kolbenaggregat 5 in im wesentlichen vertikaler Richtung orien¬ tiert ist.As can be seen clearly from FIG. 1 in combination with FIG. 2, when the cylinder-piston unit 5 is acted upon, the two-armed lever 1, which acts as a toggle lever, is initially displaced. During this displacement, the handlebars 2 are simultaneously pivoted about their pivot axis 3, so that the first two-armed lever 1 acting as a toggle lever is pivoted overall into a higher position, as a result of which the introduction of force into the lifting arm 7 is further improved. When the two-armed lever 1 and thus the lifting arm 7 are pivoted, the articulation axis 6 of the drive 5 designed as a hydraulic cylinder-piston unit naturally also pivots, as a result of which the introduction of force gradually becomes better and better. The most favorable introduction of force is achieved in the end position shown in broken lines in FIG. 1, in which the cylinder-piston unit 5 is oriented in a substantially vertical direction.
Die Details der Konstruktion und insbesondere die kompakte Bauweise ist in Fig. 3 noch weiter verdeutlicht. In Fig. 3 ist ersichtlich, daß die Anlenkachse 3 der Lenker 2 mit der An¬ lenkachse des Parallelogrammlenkers 10 im wesentlichen zusam-The details of the construction, and in particular the compact design, are further illustrated in FIG. 3. 3 shows that the articulation axis 3 of the link 2 essentially coincides with the articulation axis of the parallelogram link 10.
ERSATZBLAπ(REGEL26) menfällt, wodurch eine besonders kompakte Bauweise erzielt wird.REPLACEMENT BLAπ (RULE 26) falls, whereby a particularly compact design is achieved.
ERSATZBLAπ(REGEL26) REPLACEMENT BLAπ (RULE 26)

Claims

Patentansprüche: Claims:
1. Flachbauende Hebebühne mit einer Hubplatte, welche an einem am Grundrahmen schwenkbar abgestützten Hubarm gelenkig ange- schlössen ist, wobei der Hubarm über einen am Hubarm angrei¬ fenden Antrieb um eine Anlenkachse am Grundrahmen verschwenk¬ bar ist und wobei der Antrieb (5) über einen Lenker (1) mit einer Anlenkstelle (9) oberhalb der Schwenkachse des Hubarmes (7) am Grundrahmen mit dem Hubarm (7) verbunden ist, welche bei eingefahrener Position des Hubarmes (7) höher liegt als die Angriffstelle (4) des Antriebes (5) am Lenker (1) , dadurch gekennzeichnet, daß der Lenker (1) als zweiarmiger schwenk¬ barer Hebel nach Art eines Kniehebels ausgebildet ist, dessen zwischen den freien Enden des zweiarmigen Hebels liegende Schwenkachse über wenigstens einen weiteren Lenker (2) in Höhenrichtung schwenkbar am Grundrahmen abgestützt ist.1. Low-profile lifting platform with a lifting plate which is articulated to a lifting arm pivotally supported on the base frame, the lifting arm being pivotable about a pivot axis on the base frame via a drive engaging the lifting arm, and wherein the drive (5) is above a link (1) is connected to the articulation point (9) above the pivot axis of the lifting arm (7) on the base frame with the lifting arm (7), which, when the lifting arm (7) is in the retracted position, lies higher than the point of attack (4) of the drive ( 5) on the handlebar (1), characterized in that the handlebar (1) is designed as a two-armed pivotable lever in the manner of a toggle lever, the pivot axis of which lies between the free ends of the two-armed lever via at least one further link (2) in the height direction is pivotally supported on the base frame.
2. Flachbauende Hebebühne nach Anspruch 1, dadurch gekenn¬ zeichnet, daß die Hubplatte (11) mit einem zum Hubarm (7) parallelen Lenker (10) verbunden und zur Bodenebene parallel geführt ist.2. Low-profile lifting platform according to claim 1, characterized gekenn¬ characterized in that the lifting plate (11) with a to the lifting arm (7) parallel link (10) and is guided parallel to the floor level.
3. Flachbauende Hebebühne nach Anspruch 1, dadurch gekenn¬ zeichnet, daß der oder die Lenker (2) zur Abstützung des zwei- armigen Hebels (1) koaxial zur Schwenkachse (3) des Parallelo- gram lenkers (10) der Hubplatte (11) am Grundrahmen angelenkt ist (sind) .3. Low-profile lifting platform according to claim 1, characterized gekenn¬ characterized in that the one or more links (2) for supporting the two-armed lever (1) coaxial to the pivot axis (3) of the parallelogram handlebar (10) of the lifting plate (11) is (are) hinged to the base frame.
ERSATZBLAπ(REGEL26) REPLACEMENT BLAπ (RULE 26)
EP94922348A 1993-08-10 1994-08-10 Flat-structure lifting platform Expired - Lifetime EP0664767B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT160093 1993-08-10
AT1600/93 1993-08-10
PCT/IB1994/000253 WO1995004698A1 (en) 1993-08-10 1994-08-10 Flat-structure lifting platform

Publications (2)

Publication Number Publication Date
EP0664767A1 true EP0664767A1 (en) 1995-08-02
EP0664767B1 EP0664767B1 (en) 1999-02-10

Family

ID=3516923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94922348A Expired - Lifetime EP0664767B1 (en) 1993-08-10 1994-08-10 Flat-structure lifting platform

Country Status (10)

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US (1) US5613575A (en)
EP (1) EP0664767B1 (en)
JP (1) JPH08506560A (en)
KR (1) KR950703484A (en)
CN (1) CN1113383A (en)
AT (1) ATE176656T1 (en)
CA (1) CA2145880A1 (en)
DE (1) DE59407806D1 (en)
TW (1) TW284742B (en)
WO (1) WO1995004698A1 (en)

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US6352034B1 (en) * 1999-01-11 2002-03-05 Bolliger & Mabillard Ingenieurs Conseils S.A. Installation for amusement park, installation referred to as roller coaster
DE10163354A1 (en) * 2001-12-21 2003-07-03 Leica Microsystems Device for holding an optical viewing device
US6644615B1 (en) 2002-07-03 2003-11-11 Larin Corporation Stabilized jack stand
NL1032038C2 (en) * 2006-06-21 2007-12-27 Stertil Bv Lift bridge and lift in it.
DE102008039224A1 (en) * 2008-08-20 2010-03-04 Mhg Gmbh flat Lifter
US8678351B2 (en) 2011-05-05 2014-03-25 Robert J. Siebelink Lift assist device
CN102295246A (en) * 2011-08-03 2011-12-28 南京理工大学 Supporting-rod type small lifting table
CN106315454B (en) * 2016-08-18 2018-06-26 江苏大学 A kind of straight line elevating mechanism
EP3456510B1 (en) * 2017-09-19 2022-12-14 CL Schutzrechtsverwaltungs GmbH Apparatus for additively manufacturing of three-dimensional objects
PL241151B1 (en) * 2017-11-20 2022-08-08 Nieduszynski Adam Platform-type lifting system for parallel parking
CN110344570A (en) * 2019-05-29 2019-10-18 安徽天达建设有限公司 A kind of decorations technique of ancient building and pseudo-classic architecture

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Also Published As

Publication number Publication date
EP0664767B1 (en) 1999-02-10
WO1995004698A1 (en) 1995-02-16
TW284742B (en) 1996-09-01
ATE176656T1 (en) 1999-02-15
CA2145880A1 (en) 1995-02-16
KR950703484A (en) 1995-09-20
US5613575A (en) 1997-03-25
JPH08506560A (en) 1996-07-16
DE59407806D1 (en) 1999-03-25
CN1113383A (en) 1995-12-13

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