EP1221427A2 - Lifting device - Google Patents

Lifting device Download PDF

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Publication number
EP1221427A2
EP1221427A2 EP02000143A EP02000143A EP1221427A2 EP 1221427 A2 EP1221427 A2 EP 1221427A2 EP 02000143 A EP02000143 A EP 02000143A EP 02000143 A EP02000143 A EP 02000143A EP 1221427 A2 EP1221427 A2 EP 1221427A2
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EP
European Patent Office
Prior art keywords
lifting
scissor
scissors
crosses
lifting device
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EP02000143A
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German (de)
French (fr)
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EP1221427A3 (en
Inventor
Dieter Dr. Urbach
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Urbach Dieter Dr
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Individual
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Publication date
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Publication of EP1221427A2 publication Critical patent/EP1221427A2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/22—Lazy-tongs mechanisms

Definitions

  • the invention relates to a lifting device according to claim 1.
  • Lifting devices that are based on a scissor mechanism are known and in the wide variety of training variants widely used. Lifting devices are also known, whose scissors - preferably arranged at an angle of 90 ° to each other - one form a square tower. German patent specification 910114 has such a design Lifting device to the object.
  • the disadvantage here is that the driving forces at right angles to Lifting direction can be applied to each of the four lifting scissors with the result that a relative high effort, combined with the use of weight and cost-increasing Mechanical parts are required and a considerable amount of space is required within the lifting device exists, e.g. the often required lifting or lowering of a load from the floor or not on the floor.
  • the object of the invention is to provide a lifting device of the type mentioned in the introduction, which makes it possible with only two lifting scissors and already relatively small Force and mechanical effort the objects to be handled between a footprint and to move a maximum stroke vertically.
  • a force on the Scissor arms of a scissor cross is applied, can be connected to it Transfer scissor crosses even if they are connected by a corner. There is little considerable whether the scissor crosses are directly and closely adjacent, e.g. by means of common Pivot pins are coupled, or whether they are indirect and spaced e.g. about common Guide elements are connected.
  • such a lifting device can be used advantageous, e.g. use on a pallet truck.
  • two lifting shears each consisting of two shear crosses arranged one above the other to form and perpendicular to each other between two parallel, torsionally rigid
  • the upper and lower scissor ends of the lifting scissors on the corresponding support bars of the guide frame fixed swiveling and the diverging swiveling and sliding to be ordered.
  • the forces of the drive device for example one operated manually or by a motor Screw jacks or hydraulic cylinders are advantageous in the ends of an im Angled pair of scissors cross initiated.
  • Other arrangements e.g. between Guide frame and scissor cross center, or between two superimposed Scissor cross centers are equally possible.
  • several Lifting scissors lined up next to each other, multiple angled, open or closed lifting devices form with a common drive device or several, synchronously controlled Drive devices.
  • At least three lifting scissors via central connecting elements are connected in a star shape.
  • the inside can on the connecting elements pointing scissor arm ends either on a common Intersection of their longitudinal center lines aligned or tangential to the connecting elements be arranged.
  • the free ends of the lower scissor crosses will be slidably or rollably guided on or in guide elements, preferably on one stable floor frames are arranged.
  • the free ends of the upper scissor crosses are also guided in guide elements in accordance with the above description, which are arranged on the underside, for example a cover or worktop.
  • the swivel mechanism of the lifting shears means that the horizontal increases with increasing height Distance between the downwards directed against the ground contact area, or the up, e.g. scissor arm ends pointing towards the working platform the lower or upper scissor crosses of the lifting device decreases, resulting in reduced Stability can result.
  • the invention proposed, preferably at least on the lower scissor crosses of the lifting device to arrange a scissors cross as support scissors, which is independent of the vertically movable Can lift scissors move in a horizontal longitudinal extent.
  • FIG. 1 shows an example of a lifting device 1 placed on the contact surface 10 is formed from the lifting shears 2 and 3 arranged at an angle of 90 ° to one another, wherein the lifting scissors 2 from a scissor cross and the lifting scissors 3 from two scissor crosses 4, 5 exists.
  • the scissor arms 6, 7 of the lifting shear 2 are with the scissor arms 9.1 and 9 coupled vertically pivotably via connecting elements 13 and 14.
  • the drive device 18 an electric motor with integrated spindle nut and not rotating Trapezoidal screw, stands by means of the transmission elements 11, 12 with the scissor arms 8.1 and 9, 9.1 in such a way that by actuating the drive device 18 a driving force A acts on the lifting shears 4 with which all three shear crosses - and thus the entire lifting device - are pivotable in the lifting direction H.
  • FIG. 2 and Fig. 3 one of the design and application possibilities of the invention Lifting device shown using the example of a scissor lift truck.
  • Two, each two upper scissor crosses and two lower scissor crosses 2 and 3 are perpendicular to each other between the guide bars 21 and 22, respectively an upper support frame 19 and a lower support frame 20 are arranged.
  • the right angle mutually facing upper and lower scissor stay ends are at the Guide bars 21, 22 are pivotally fixed, the opposite scissor stay ends guided swivel-slide.
  • the right angle to each other middle scissor stay ends of the lifting scissors 2, 3 are via a connecting element 15 coupled, which also functions as a transmission element 12 for the driving force according to Fig.1.
  • the support frames 19, 20 are spaced apart vertically apart in parallel. or merged, even if, as shown here, between the guide rails 23 of the upper and lower support frame 19, 20 no lifting shears is provided.
  • a container 34 is indicated, which is between the driving plane E and the maximum stroke is movable.
  • FIG. 6 shows, again in a simplified representation and in a vertical section, one as a working platform trained lifting device 1 with four lifting scissors 2, the arrangement of which approximately in Fig. 4 corresponds, with only those that are in alignment laterally of the center line M, mirror image identically constructed lifting scissors 2 are shown.
  • Each of the lifting scissors 2. which are arranged between the floor platform 31 and the work platform 32 from five superimposed scissor crosses. The lower scissor crosses are with their scissor arms 9 pivotable on a combined transmission and connecting element 26 articulated.
  • An electric motor 27, its driving force, is flanged onto it by means of a gear via a trapezoidal threaded spindle 28 and a spindle nut in the transmission and connecting element 29 is initiated, on which the scissor arms 8 the lower scissor crosses and the scissor arms 9 arranged above Scissor crosses are pivotally articulated.
  • the free ends of the scissor arms 8 lower scissor crosses are equipped with rollers 30, which are in groove-like recesses the floor platform 31 are guided.
  • the working platform 32 has on its underside in Central arrangement on a connecting element 33 on which the scissor arms 9 of the upper Scissor crosses are pivotally articulated. In groove-shaped recesses in turn, the rollers 30 are guided, on which the work platform 32 is supported.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

Lifting device (1) comprises at least two scissor arms (2, 3) arranged at an angle to each other. At least one of the scissor arms is connected to a drive device (18) introducing a drive force (A) into the scissor arm(s) parallel to the lifting direction (H). Preferred Features: The scissor arms are formed from several crosses (4, 5) arranged in vertical and/or horizontal rows. The drive force of the drive device is introduced at least into one cross (4) of one scissor arm (3).

Description

Die Erfindung betrifft eine Hubeinrichtung gemäß Anspruch 1.The invention relates to a lifting device according to claim 1.

Hubeinrichtungen, die auf einem Scherenmechanismus aufbauen, sind bekannt und in den verschiedensten Ausbildungsvarianfen weit verbreitet. Bekannt sind auch Hubeinrichtungen, deren Hubscheren - vorzugsweise im Winkel von 90° zueinander angeordnet - einen viereckigen Turm bilden. Die deutsche Patentschrift 910114 hat ein derart ausgebildetes Hebegerät zum Gegenstand. Nachteilig ist hierbei, dass die Antriebskräfte rechtwinkelig zur Hubrichtung auf jede der vier Hubscheren aufgebracht werden mit der Folge, dass ein verhältnismäßig hoher Kraftaufwand, verbunden mit dem Einsatz gewichts- und kostenerhöhender Mechanikteile erforderlich ist und ein erheblicher Platzbedarf innerhalb des Hebegerätes besteht, der z.B. das oftmals geforderte Anheben oder Absenken einer Last vom Boden bzw. auf den Boden nicht zuläßt.Lifting devices that are based on a scissor mechanism are known and in the wide variety of training variants widely used. Lifting devices are also known, whose scissors - preferably arranged at an angle of 90 ° to each other - one form a square tower. German patent specification 910114 has such a design Lifting device to the object. The disadvantage here is that the driving forces at right angles to Lifting direction can be applied to each of the four lifting scissors with the result that a relative high effort, combined with the use of weight and cost-increasing Mechanical parts are required and a considerable amount of space is required within the lifting device exists, e.g. the often required lifting or lowering of a load from the floor or not on the floor.

Aufgabe der Erfindung ist es, eine Hubeinrichtung der eingangs genannten Art zu schaffen, die es ermöglicht, mit bereits nur zwei Hubscheren und bereits verhältnismäßig geringem Kraft- und Mechanikaufwand die zu handhabenden Gegenstände zwischen einer Aufstandsfläche und einem Hubmaximum vertikal zu bewegen.The object of the invention is to provide a lifting device of the type mentioned in the introduction, which makes it possible with only two lifting scissors and already relatively small Force and mechanical effort the objects to be handled between a footprint and to move a maximum stroke vertically.

Diese Aufgabe wird durch die Merkmale des Hauptanspruchs gelöst. Eine Kraft, die auf die Scherenarme eines Scherenkreuzes aufgebracht wird, läßt sich auf damit verbundene Scherenkreuze auch dann übertragen, wenn sie über Eck verbunden sind. Dabei ist wenig erheblich, ob die Scherenkreuze direkt und eng benachbart, z.B. mittels gemeinsamer Drehgelenkbolzen gekoppelt sind, oder ob sie indirekt und beabstandet, z.B. über gemeinsame Führungselemente verbunden werden.This object is solved by the features of the main claim. A force on the Scissor arms of a scissor cross is applied, can be connected to it Transfer scissor crosses even if they are connected by a corner. There is little considerable whether the scissor crosses are directly and closely adjacent, e.g. by means of common Pivot pins are coupled, or whether they are indirect and spaced e.g. about common Guide elements are connected.

Bilden mehrere übereinander angeordnete Scherenkreuze die Hubscheren, ist die erfindungsgemäße Hubeinrichtung bereits funktionsfähig, wenn eine Antriebseinrichtung auf nur eines der Scherenkreuze einer Hubschere wirkt und die Hubscheren nur zwei Verbindungsstellen aufweisen. Die durch eine solche Anordnung von Scherenkreuzen gebildeten Hubscheren führen zu geringen Reibungsverlusten und toleranzbedingten Instabilitäten. die jedoch für die meisten Anwendungsfälle von untergeordneter Bedeutung sind.If a plurality of scissor crosses arranged one above the other form the lifting scissors, this is the invention Lifting device is already functional when only one drive device one of the scissor crosses of a lifting shear works and the lifting shears only two connection points exhibit. The formed by such an arrangement of scissor crosses Lift scissors lead to low friction losses and tolerance-related instabilities. the but are of minor importance for most applications.

Somit besteht die Lösung der gestellten Aufgabe im wesentlichen darin, dass mit der vertikal gerichteten Kraft eine Antriebseinrichtung, die auf die Enden nur eines Scherenkreuzes von zumindest zwei im Winkel zueinander angeordneten Hubscheren wirkt, ein Gegenstand um das vielfache des Hubes der Antriebsvorrichtung vertikal bewegt werden kann, wobei das Vielfache der Anzahl der übereinander angeordneten Scherenkreuze entspricht. Dieser Hubmultiplikator ist nochmals, unabhängig von der Anzahl der Hubscheren steigerbar, je weiter die Einleitungspunkte für die Antriebskraft von den Enden der Scherenarme eines Scherenkreuzes in Richtung der Scherenarmkreuzung verlegt werden.So the solution to the problem is essentially that with the vertical directed force a drive device, which on the ends of only a scissor cross of at least two lifting scissors arranged at an angle to one another, an object can be moved vertically by a multiple of the stroke of the drive device, wherein the multiple of the number of scissor crosses arranged one above the other. This Lifting multiplier can be increased again, regardless of the number of lifting shears further the initiation points for the driving force from the ends of the scissor arms one Scissor cross in the direction of the scissor arm crossing.

Wie später, mit Fig.2 ausführlicher zu beschreiben sein wird, läßt sich eine solche Hubeinrichtung vorteilhaft, z.B. an einem Hubwagen einsetzen. In einer ersten Ausführung wird vorgeschlagen, zwei Hubscheren aus je zwei übereinander angeordneten Scherenkreuzen zu bilden und rechtwinketig zueinander zwischen zwei parallel beabstandeten, verwindungssteifen Führungsrahmen anzuschlagen, wobei die zueinander weisenden oberen und unteren Scherenenden der Hubscheren an den entsprechenden Tragholmen der Führungsrahmen schwenkbeweglich fixiert und die auseinander weisenden schwenk- und schiebebeweglich angeordnet werden. Mit der auf diese Weise gebildeten Drei-Punkt-Abstützung und -Lagerung der Führungsrahmen gegeneinander, befinden sie sich stets fluchtend und parallel beabstandet, jedoch vertikal beweglich, übereinander. As will be described in more detail later with FIG. 2, such a lifting device can be used advantageous, e.g. use on a pallet truck. In a first execution proposed two lifting shears each consisting of two shear crosses arranged one above the other to form and perpendicular to each other between two parallel, torsionally rigid To strike the guide frame, the upper and lower scissor ends of the lifting scissors on the corresponding support bars of the guide frame fixed swiveling and the diverging swiveling and sliding to be ordered. With the three-point support formed in this way and storage of the guide frames against each other, they are always in alignment and spaced in parallel, but vertically movable, one above the other.

Die Kräfte der Antriebseinrichtung, beispielsweise eines von Hand oder motorisch betriebenen Spindelhubgetriebes oder Hydraulikzylinders werden vorteilhaft in die Enden eines im Winkel verbundenen Scherenkreuzpaares eingeleitet. Andere Wirkanordnungen, z.B. zwischen Führungsrahmen und Scherenkreuzmitte, oder zwischen zwei übereinander befindlichen Scherenkreuzmitten sind gleichermaßen möglich. Erfindungsgemäß können mehrere aneinander gereihte Hubscheren mehrfach gewinkelte, offene oder geschlossene Hubeinrichtungen bilden mit einer gemeinsamen Antriebseinrichtung oder mehreren, gleichlaufgesteuerten Antriebseinrichtungen.The forces of the drive device, for example one operated manually or by a motor Screw jacks or hydraulic cylinders are advantageous in the ends of an im Angled pair of scissors cross initiated. Other arrangements, e.g. between Guide frame and scissor cross center, or between two superimposed Scissor cross centers are equally possible. According to the invention, several Lifting scissors lined up next to each other, multiple angled, open or closed lifting devices form with a common drive device or several, synchronously controlled Drive devices.

Für Anwendungen, bei denen große Hubhöhen gefordert sind, z.B. bei- Antennentürmen oder Arbeitsbühnen ist es vorteilhaft, wenn wenigstens drei Hubscheren über zentrale Verbindungselemente sternförmig miteinander verbunden sind. Dabei können die nach innen auf die Verbindungselemente weisenden Scherenarmenden entweder auf einen gemeinsamen Schnittpunkt ihrer Längenmittellinien ausgerichtet oder tangential an den Verbindungselementen angeordnet sein. Die freien Enden der unteren Scherenkreuze werden gleit- oder rollbeweglich an oder in Führungselementen geführt, die vorzugsweise an einem standsicheren Bodenrahmen angeordnet sind. Die freien Enden der oberen Scherenkreuze werden entsprechend vorstehender Beschreibung ebenfalls in Führungselementen geführt, die an der Unterseite, beispielsweise einer Deck- oder Arbeitsplatte angeordnet sind. Auch bei zentraler Anordnung der Verbindungselemente zwischen drei oder mehr der sternförmig von ihr abstehenden Hubscheren ist es vorteilhaft, wenn nur die auf gleicher Höhe angeordneten Scherenkreuze der Hubscheren verbunden und angetrieben werden. Um die vorerwähnte Drei-Punkt-Auflage herzustellen, können zwei Hubscheren auch T-förmig zueinander angeordnet sein.For applications where large lifting heights are required, e.g. with- antenna towers or working platforms, it is advantageous if at least three lifting scissors via central connecting elements are connected in a star shape. The inside can on the connecting elements pointing scissor arm ends either on a common Intersection of their longitudinal center lines aligned or tangential to the connecting elements be arranged. The free ends of the lower scissor crosses will be slidably or rollably guided on or in guide elements, preferably on one stable floor frames are arranged. The free ends of the upper scissor crosses are also guided in guide elements in accordance with the above description, which are arranged on the underside, for example a cover or worktop. Also with central arrangement of the connecting elements between three or more of the star-shaped it stands out from it, it is advantageous if only those arranged at the same height Scissor crosses of the lifting shears are connected and driven. To the aforementioned To produce a three-point support, two lifting shears can also be T-shaped to each other be arranged.

Die Schwenkmechanik der Hubscheren bedingt, dass mit zunehmender Höhe der horizontale Abstand zwischen den nach unten gegen die Bodenaufstandsfläche gerichteten, bzw. den nach oben, z.B. gegen die aufliegende Arbeitsplattform gerichteten Scherenarmenden der unteren bzw. oberen Scherenkreuze der Hubeinrichtung abnimmt, was zu verminderter Standsicherheit führen kann. Zur Verbesserung der Standsicherheit wird erfindungsgemäß vorgeschlagen, vorzugsweise an den unteren Scherenkreuzen der Hubeinrichtung zumindest ein Scherenkreuz als Stützschere anzuordnen, welches sich unabhängig von den vertikalbeweglichen Hubscheren in eine horizontale Längserstreckung bewegen läßt. Für besondere Einsatzzwecke kann auch eine Koppelung der vorerwähnten Scherenkreuze in der Weise vorgesehen.sein, dass jede durch den Antrieb ausgelöste vertikale Streckbewegung der Hubschere mittels einer hier nicht weiter zu beschreibenden Umkehrvorrichtung zwangsläufig ihre Entsprechung in einer horizontalen Streckbewegung der Stützschere findet. Die dadurch bewirkte gegenläufige Verschwenkung der Scherenarme von Hub- und Stützschere führt zu synchroner Verlängerung oder Verkürzung vorerwähnter Scherenpaare.The swivel mechanism of the lifting shears means that the horizontal increases with increasing height Distance between the downwards directed against the ground contact area, or the up, e.g. scissor arm ends pointing towards the working platform the lower or upper scissor crosses of the lifting device decreases, resulting in reduced Stability can result. To improve the stability, the invention proposed, preferably at least on the lower scissor crosses of the lifting device to arrange a scissors cross as support scissors, which is independent of the vertically movable Can lift scissors move in a horizontal longitudinal extent. For special ones A coupling of the aforementioned scissor crosses in the Provided that any vertical stretching movement triggered by the drive the lifting shear by means of a reversing device, which is not described further here inevitably finds its counterpart in a horizontal stretching movement of the support scissors. The resulting opposite pivoting of the scissor arms of lifting and Support scissors lead to synchronous lengthening or shortening of the aforementioned pair of scissors.

Die Erfindung wird nachfolgend anhand vereinfachter Darstellungen noch näher erläutert. Es zeigt:

  • Fig.1 eine Hubeinrichtung in perspektivischer Darstellung.
  • Fig.2 eine in einen Transportwagen integrierte Hubeinrichtung in Seitenansicht.
  • Fig.3 den Transportwagen gemäß Fig.2 als Draufsicht im Schnitt A-A.
  • Fig.4 die Hubscheren einer Hubeinrichtung in sternförmiger Anordnung als Draufsicht.
  • Fig.5 die Hubscheren einer Hubeinrichtung in tangentialer Anordnung als Draufsicht.
  • Fig.6 eine als Arbeitsbühne gestaltete Hubeinrichtung im Vertikalschnitt.
    • The invention is explained in more detail below with the aid of simplified representations. It shows:
  • 1 shows a lifting device in a perspective view.
  • 2 shows a lifting device integrated in a transport vehicle in a side view.
  • 3 shows the trolley according to Figure 2 as a plan view in section AA.
  • 4 shows the lifting scissors of a lifting device in a star-shaped arrangement as a top view.
  • 5 shows the lifting scissors of a lifting device in a tangential arrangement as a top view.
  • 6 shows a lifting device designed as a working platform in vertical section.

    • Fig.1 stellt beispielhaft eine auf die Aufstandsfläche 10 gestellte Hubeinrichtung 1 dar, die aus den im Winkel von 90° zueinander angeordneten Hubscheren 2 und 3 gebildet ist, wobei die Hubschere 2 aus einem Scherenkreuz und die Hubschere 3 aus zwei Scherenkreuzen 4, 5 besteht. Die Scherenarme 6, 7 der Hubschere 2 sind mit den Scherenarmen 9.1 und 9 über Verbindungselemente 13 und 14 vertikal schwenkbeweglich gekoppelt. Die Antriebseinrichtung 18, ein Elektromotor mit integrierter Spindelmutter und nicht drehender Trapezgewindespindel, steht mittels der Übertragungselemente 11, 12 mit den Scherenarmen 8.1 und 9, 9.1 so in Verbindung, dass durch Betätigung der Antriebseinrichtung 18 eine Antriebskraft A auf die Hubschere 4 wirkt, mit der alle drei Scherenkreuze - und damit die gesamte Hubeinrichtung - in der Hubrichtung H verschwenkbar sind.1 shows an example of a lifting device 1 placed on the contact surface 10 is formed from the lifting shears 2 and 3 arranged at an angle of 90 ° to one another, wherein the lifting scissors 2 from a scissor cross and the lifting scissors 3 from two scissor crosses 4, 5 exists. The scissor arms 6, 7 of the lifting shear 2 are with the scissor arms 9.1 and 9 coupled vertically pivotably via connecting elements 13 and 14. The drive device 18, an electric motor with integrated spindle nut and not rotating Trapezoidal screw, stands by means of the transmission elements 11, 12 with the scissor arms 8.1 and 9, 9.1 in such a way that by actuating the drive device 18 a driving force A acts on the lifting shears 4 with which all three shear crosses - and thus the entire lifting device - are pivotable in the lifting direction H.

    Mit Fig.2 und Fig.3 wird eine der Ausgestaltungs- und Anwendungsmöglichkeiten der erfindungsgemäßen Hubeinrichtung am Beispiel eines Scherenhubwagens gezeigt. Zwei, aus je zwei oberen Scherenkreuzen und zwei unteren Scherenkreuzen gebildete Hubscheren 2 und 3 sind rechtwinkelig zueinanderstehend zwischen den Führungsholmen 21 bzw. 22 eines oberen Tragrahmens 19 und eines unteren Tragrahmens 20 angeordnet. Die rechtwinkelig zueinander gerichteten oberen und unteren Scherenstrebenenden sind an den Führungsholmen 21, 22 schwenkbeweglich fixiert, die entgegen gerichteten Scherenstrebenenden schwenk-schiebebeweglich geführt. Die rechtwinkelig zueinander ausgerichteten mittleren Scherenstrebenenden der Hubscheren 2, 3 sind über ein Verbindungselement 15 gekoppelt, das auch gleichzeitig die Funktion eines Übertragungselements 12 für die Antriebskraft gemäß Fig.1 erfüllt. Mit Betätigung der am oberen Tragrahmen angeordneten Antriebseinrichtung 18 werden die Tragrahmen 19, 20 parallel beabstandet vertikal auseinander- oder zusammengeführt, auch wenn, wie hier gezeigt, zwischen den Führungsholmen 23 des oberen und unteren Tragrahmens 19, 20 keine Hubschere vorgesehen ist. Im vertikal durchgängig freien Innenraum der Tragrahmen 19, 20 und am Tragrahmen 19 lösbar befestigt, ist ein Behälter 34 angedeutet, der zwischen der Fahrebene E und dem Hubmaximum verfahrbar ist.With Fig. 2 and Fig. 3 one of the design and application possibilities of the invention Lifting device shown using the example of a scissor lift truck. Two, each two upper scissor crosses and two lower scissor crosses 2 and 3 are perpendicular to each other between the guide bars 21 and 22, respectively an upper support frame 19 and a lower support frame 20 are arranged. The right angle mutually facing upper and lower scissor stay ends are at the Guide bars 21, 22 are pivotally fixed, the opposite scissor stay ends guided swivel-slide. The right angle to each other middle scissor stay ends of the lifting scissors 2, 3 are via a connecting element 15 coupled, which also functions as a transmission element 12 for the driving force according to Fig.1. By actuating the arranged on the upper support frame Drive device 18, the support frames 19, 20 are spaced apart vertically apart in parallel. or merged, even if, as shown here, between the guide rails 23 of the upper and lower support frame 19, 20 no lifting shears is provided. in the vertically continuous free interior of the support frame 19, 20 and on the support frame 19 releasable attached, a container 34 is indicated, which is between the driving plane E and the maximum stroke is movable.

    Die sternförmig angeordnete Koppelung von vier Hubscheren 2 mittels gabelförmiger Verbindungselemente 16, die an einem vierseitigen Übertragungselement 17 angelenkt sind. wird in einer Draufsicht und nur symbolisiert in Fig.4 gezeigt. In gleicher Darstellungsform zeigt Fig.5 ein dreiseitiges Übertragungselement 24, an dem drei Hubscheren 2 mittels Schwenkzapfen 25 tangential angeordnet sind.The star-shaped coupling of four lifting shears 2 by means of fork-shaped connecting elements 16, which are hinged to a four-sided transmission element 17. is shown in a top view and only symbolized in Fig.4. In the same format 5 shows a three-sided transmission element 24, on the three lifting scissors 2 by means of Pivots 25 are arranged tangentially.

    Fig.6 zeigt, wiederum in vereinfachter Darstellung und im Vertikaischnitt, eine als Arbeitsbühne ausgebildete Hubeinrichtung 1 mit vier Hubscheren 2, deren Anordnung etwa der in Fig.4 gezeigten entspricht, wobei nur die seitlich der Mittellinie M in Flucht stehenden, spiegelbildlich identisch aufgebauten Hubscheren 2 gezeigt werden. Jede der Hubscheren 2. die zwischen der Bodenplattform 31 und der Arbeitsplattform 32 angeordnet sind, besteht aus fünf übereinander angeordneten Scherenkreuzen. Die unteren Scherenkreuze sind mit ihren Scherenarmen 9 schwenkbeweglich an einem kombinierten Übertragungs- und Verbindungselement 26 angelenkt. Daran ist ein Elektromotor 27 angeflanscht, dessen Antriebskraft mittels Getriebe über eine Trapezgewindespindel 28 und eine Spindelmutter in das Übertragungs- und Verbindungselement 29 eingeleitet wird, an dem die Scherenarme 8 der unteren Scherenkreuze und die Scherenarme 9 der darüberstehend angeordneten Scherenkreuze schwenkbeweglich angelenkt sind. Die freien Enden der Scherenarme 8 der unteren Scherenkreuze sind mit Rollen 30 bestückt, die in nutenähnlichen Ausnehmungen der Bodenplattform 31 geführt werden. Die Arbeitsplattform 32 weist an ihrer Unterseite in zentraler Anordnung ein Verbindungselement 33 auf, an dem die Scherenarme 9 der oberen Scherenkreuze schwenkbeweglich angelenkt sind. In nutenförmigen Ausnehmungen sind wiederum die Rollen 30 geführt, auf denen die Arbeitsplattform 32 abgstützt ist.Fig. 6 shows, again in a simplified representation and in a vertical section, one as a working platform trained lifting device 1 with four lifting scissors 2, the arrangement of which approximately in Fig. 4 corresponds, with only those that are in alignment laterally of the center line M, mirror image identically constructed lifting scissors 2 are shown. Each of the lifting scissors 2. which are arranged between the floor platform 31 and the work platform 32 from five superimposed scissor crosses. The lower scissor crosses are with their scissor arms 9 pivotable on a combined transmission and connecting element 26 articulated. An electric motor 27, its driving force, is flanged onto it by means of a gear via a trapezoidal threaded spindle 28 and a spindle nut in the transmission and connecting element 29 is initiated, on which the scissor arms 8 the lower scissor crosses and the scissor arms 9 arranged above Scissor crosses are pivotally articulated. The free ends of the scissor arms 8 lower scissor crosses are equipped with rollers 30, which are in groove-like recesses the floor platform 31 are guided. The working platform 32 has on its underside in Central arrangement on a connecting element 33 on which the scissor arms 9 of the upper Scissor crosses are pivotally articulated. In groove-shaped recesses in turn, the rollers 30 are guided, on which the work platform 32 is supported.

    Claims (3)

    Hubeinrichtung mit im Winkel zueinander angeordneten, antreibbaren Hubscheren dadurch gekennzeichnet, dass die Hubeinrichtung (1) zumindest zwei Hubscheren (2, 3) aufweist, dass zumindest eine der Hubscheren mit einer Antriebseinrichtung (18) in Antriebsverbindung steht und, dass die Antriebseinrichtung (18) eine parallel zur Hubrichtung (H) gerichtete Antriebskraft (A) in die Hubschere bzw. in die Hubscheren einleitet. Lifting device with drivable scissors arranged at an angle to one another, characterized in that that the lifting device (1) has at least two lifting scissors (2, 3), that at least one of the lifting scissors is in drive connection with a drive device (18) and, that the drive device (18) introduces a driving force (A) directed parallel to the lifting direction (H) into the lifting scissors or into the lifting scissors. Hubeinrichtung (1) nach Anspruch 1 dadurch gekennzeichnet, dass die Hubscheren aus mehreren vertikal und/oder horizontal in Reihe aneinander angeordneten Scherenkreuzen (4, 5) gebildet werden und die Antriebskraft (A) der Antriebseinrichtung (18) zumindest in ein Scherenkreuz (4) einer Hubschere (3) eingeleitet wird.Lifting device (1) according to Claim 1, characterized in that the lifting scissors are formed from a plurality of scissor crosses (4, 5) arranged vertically and / or horizontally in a row and the driving force (A) of the drive device (18) at least into one scissor cross (4) a lifting shear (3) is initiated. Hubeinrichtung (1) nach einem der Ansprüche 1 oder 2 dadurch gekennzeichnet, dass an einer Hubschere die Anordnung zumindest einer Stützschere vorsehbar ist, deren Streckrichtung rechtwinkelig zur Hubrichtung (H) verläuft.Lifting device (1) according to one of claims 1 or 2, characterized in that the arrangement of at least one supporting scissors can be provided on lifting scissors, the direction of extension of which is perpendicular to the lifting direction (H).
    EP02000143A 2001-01-08 2002-01-07 Lifting device Withdrawn EP1221427A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10100536 2001-01-08
    DE2001100536 DE10100536A1 (en) 2001-01-08 2001-01-08 lifting device

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    EP1221427A2 true EP1221427A2 (en) 2002-07-10
    EP1221427A3 EP1221427A3 (en) 2003-01-02

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    DE (1) DE10100536A1 (en)

    Cited By (4)

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    Publication number Priority date Publication date Assignee Title
    EP1661843A1 (en) * 2004-11-30 2006-05-31 Westinghouse Electric Germany GmbH Method for transferring a heavy load and lifting accessories for a lifting apparatus
    CN104464832A (en) * 2014-10-20 2015-03-25 佛山市禾才科技服务有限公司 V type composite mechanical arm
    CN104476564A (en) * 2014-10-20 2015-04-01 佛山市禾才科技服务有限公司 Y-type compound mechanical arm
    AT523138A1 (en) * 2019-11-06 2021-05-15 Irinkov Plamen Device for raising and lowering a work surface vertically and parallel and without lateral displacement to an immovable work surface by means of a three-sided kinematic frame system that is connected to both work surfaces

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102006024613A1 (en) * 2006-05-26 2007-11-29 Bernhard Schulz Lifting system for loads comprises load platform mounted on extending scissors lever system operated by electric motor, guide bolts on edges of platform sliding in profiled guide rails as lever system is extended
    DE102019111659A1 (en) * 2019-05-06 2020-11-12 Christian Schwab Platform for handling goods

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    US2625443A (en) * 1949-09-27 1953-01-13 Sensenbaugh Andrew Elevating scaffold
    GB726658A (en) * 1951-06-26 1955-03-23 Johann Wilhelm Ludowici Improvements in or relating to lifting devices
    US4718519A (en) * 1985-10-21 1988-01-12 Barker Sidney L High lift scissor jack
    FR2645193A1 (en) * 1989-03-31 1990-10-05 Sarazin Maurice Device with self-extending structure

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    BE343682A (en) *
    DE51537C (en) * G. BRISSLER in Berlin SW., Teltowerstrafse 37IV Scissors hoist with coil springs
    DE679356C (en) * 1937-05-04 1939-08-03 Erich Grassmann Lifting device
    US2445004A (en) * 1945-04-25 1948-07-13 Frank M Reynolds Elevating platform truck
    US2625443A (en) * 1949-09-27 1953-01-13 Sensenbaugh Andrew Elevating scaffold
    GB726658A (en) * 1951-06-26 1955-03-23 Johann Wilhelm Ludowici Improvements in or relating to lifting devices
    US4718519A (en) * 1985-10-21 1988-01-12 Barker Sidney L High lift scissor jack
    FR2645193A1 (en) * 1989-03-31 1990-10-05 Sarazin Maurice Device with self-extending structure

    Cited By (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1661843A1 (en) * 2004-11-30 2006-05-31 Westinghouse Electric Germany GmbH Method for transferring a heavy load and lifting accessories for a lifting apparatus
    CN104464832A (en) * 2014-10-20 2015-03-25 佛山市禾才科技服务有限公司 V type composite mechanical arm
    CN104476564A (en) * 2014-10-20 2015-04-01 佛山市禾才科技服务有限公司 Y-type compound mechanical arm
    AT523138A1 (en) * 2019-11-06 2021-05-15 Irinkov Plamen Device for raising and lowering a work surface vertically and parallel and without lateral displacement to an immovable work surface by means of a three-sided kinematic frame system that is connected to both work surfaces
    AT523138B1 (en) * 2019-11-06 2022-08-15 Irinkov Plamen Device for raising and lowering a work surface vertically and parallel and without lateral displacement to a stationary work surface by means of a three-sided kinematic frame system connected to both work surfaces

    Also Published As

    Publication number Publication date
    DE10100536A1 (en) 2002-07-11
    EP1221427A3 (en) 2003-01-02

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