EP2723671B1 - Scissor-type lifting table - Google Patents

Scissor-type lifting table Download PDF

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Publication number
EP2723671B1
EP2723671B1 EP13753095.2A EP13753095A EP2723671B1 EP 2723671 B1 EP2723671 B1 EP 2723671B1 EP 13753095 A EP13753095 A EP 13753095A EP 2723671 B1 EP2723671 B1 EP 2723671B1
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EP
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Prior art keywords
bearing
scissors
scissor
type lifting
lifting table
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EP13753095.2A
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German (de)
French (fr)
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EP2723671A1 (en
Inventor
Christoph Mohr
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Individual
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Individual
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Priority to PL13753095T priority Critical patent/PL2723671T3/en
Priority to SI201330007T priority patent/SI2723671T1/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
    • 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
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B66F7/0666—Multiple scissor linkages vertically arranged
    • 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
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions

Definitions

  • the invention relates to a scissor lift according to the preamble of claim 1.
  • Such scissor lift tables are already known.
  • the scissors are usually formed of two pairs of scissor blades, which are spaced from each other by suitable cross braces connected to each other.
  • the individual scissor blade pairs each have two scissor blades, which are connected to each other rotatable by a center bearing.
  • the center bearing is located approximately half the length of the scissor blades.
  • holes are made in the scissor blades, which are made such that they form a suitable bearing seat for the bearing to be used.
  • the holes must not only in size, but also in terms of their design, such as the surface finish, be designed so that they are suitable as a bearing seat for the bearing to be used. Since such scissor lift tables usually are custom-made, which are specified according to customer requirements, this means a high production cost. Furthermore, a subsequent replacement of the stock, for example, during repair or maintenance, difficult if, for example, bearing outer rings are pressed into the bearing seats. Also, in a bearing damage usually the scissors are so badly damaged that a significant repair or possibly the exchange of the entire inner scissors is required here. A change to another type of bearing or other bearing size can also not be realized in a simple manner.
  • U1 is a lifting device according to the preamble of claim 1 is known, in which the scissor central bearing is designed to be interchangeable.
  • the change is cumbersome, because to the lifting table must be at least partially disassembled. This process takes a long time.
  • the invention therefore has for its object to provide a scissor lift, in the manufacture, assembly and disassembly of the Scherenblattplane and the center bearing are possible in a simpler and cheaper way.
  • the object is achieved in that at least one scissor blade of a pair of scissor blades has a releasably connected to the scissor blade bearing receiving element for receiving a center bearing.
  • a relief device to relieve the center bearing is provided.
  • the bearing receiving element which is preferably accommodated in a matching recess, which may be embodied, for example, as a bore, of the scissor blade, is easily assembled or disassembled due to its detachable connection with the scissor blade.
  • the advantage of such, with the scissor blade releasably connected bearing receiving elements is that in the production of scissor blades no bearing seat must be made in the scissor blade, but only for a connectivity of the scissor blade with the bearing receiving element must be taken.
  • the bearing can be provided within the scissor blade, ie in the same position in which it would also be in a conventional scissor blade, ie there is no additional Required space in the width of the pair of scissor blades.
  • the bearing receiving element according to the invention has two essential features. On the one hand, it is designed such that it can be detachably connected to the scissor blade, for which purpose it advantageously has a connecting region, for example a flange. Furthermore, it must be designed in its outer contour so that it is connectable to the scissor blade.
  • the bearing receiving element is designed so that it is suitable for receiving the intended bearing, i. it has a receiving area, for example a bore for a bearing to be used, which is designed so that it represents a suitable bearing seat for the bearing type used.
  • the bearings are also incorporated only in the bearing receiving elements, for example Pressed, can now be exchanged in an advantageous manner, the bearing support member together with the bearing, which can be done due to the detachable connection in a simple manner usually on site and in the best case, even without removing the scissor blades from the scissor lift.
  • a modular system for the installation or replacement of center bearings in scissor lift tables can be provided.
  • the idea of the modular system is based on the fact that the scissor blades have connecting means, in particular recesses, in their areas to be interconnected by center bearings.
  • a plurality of different types of bearing receiving elements is available and optionally connectable with the scissor blades.
  • the different types bearing receiving elements have different, each for the male to be accommodated in the respective center bearing suitable inner contours.
  • center bearings can be exchanged in a simple manner against each other, for example, if the design of a center bearing subsequently proves to be faulty, worn out a bearing and a similar bearing is no longer available.
  • the replacement of a bearing is also considerably simplified in comparison with an identical bearing on site.
  • two scissor blades 3 each having a center bearing 2, which is accommodated in bearing receiving elements 4, are connected to scissor blade pairs.
  • the two pairs of scissors blades are connected by cross bracing elements 14 to form a pair of scissors 1.
  • the scissor blades 3 have with the bearing receiving elements 4 compatible connecting means 5 in the form of recesses into which the bearing receiving elements 4 are used.
  • a connecting region 6 of the bearing receiving elements 4 designed as a flange in the example shown serves for the detachable, torsion-proof attachment of the bearing receiving elements 4 in the scissor blades 3.
  • the exemplary scissor lift tables can, in order to further simplify the replacement of the bearing support elements, also have a relief device 13 which serves to fix the scissors in a specific lift table position such that the center bearing is free of load and thus in the ideal case without any further dismantling measure the scissor lift can be expanded.
  • these relief devices 13 may be configured in the form of bores which are located in the scissor blades 3 and which are designed such that they overlap in the desired position for disassembly of the scissor lift so that a fixing element, for example a locking bolt, inserted through it and so the otherwise be absorbed by the center bearing loads can be absorbed by the socket pin.
  • a fixing element for example a locking bolt
  • one of the bearing receiving elements 4 is provided with a bearing seat 10 for the outer ring of the spherical bearing 11.
  • the bearing receiving element 4 in the other scissor blade 3 of the scissor blade pair has a receptacle for a bolt 12 with an anti-rotation 15.
  • the bolt 12 is in the example shown, the shaft of the joint bearing 11 and accordingly designed as a suitable bearing seat, in the example shown with snap ring fuse.
  • FIG. 4 shows a further exemplary embodiment in which both scissor blades 3 of the pair of scissor blades shown are connected to bearing receiving elements 4.
  • both bearing receiving elements 4 bearing bushes 8 with a common shaft 9.
  • Each of the two bearing bushes 8 forms a plain bearing with the shaft 9.
  • this bearing can be designed as a self-lubricating bearing, for example as a DU bearing.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Sliding-Contact Bearings (AREA)
  • Pivots And Pivotal Connections (AREA)

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung betrifft einen Scherenhubtisch nach dem Oberbegriff des Anspruchs 1.The invention relates to a scissor lift according to the preamble of claim 1.

STAND DER TECHNIKSTATE OF THE ART

Derartige Scherenhubtische sind bereits bekannt. Bei derartigen Scherenhubtischen sind die Scheren in der Regel aus zwei Scherenblattpaaren gebildet, die beabstandet voneinander durch geeignete Querverstrebungen miteinander verbunden sind. Die einzelnen Scherenblattpaare weisen jeweils zwei Scherenblätter auf, die durch ein Mittenlager gegeneinander verdrehbar miteinander verbunden sind. Dabei befindet sich das Mittenlager etwa auf der Hälfte der Länge der Scherenblätter.Such scissor lift tables are already known. In such scissor lift tables, the scissors are usually formed of two pairs of scissor blades, which are spaced from each other by suitable cross braces connected to each other. The individual scissor blade pairs each have two scissor blades, which are connected to each other rotatable by a center bearing. In this case, the center bearing is located approximately half the length of the scissor blades.

Nach dem Stand der Technik haben sich für das Mittenlager insbesondere Gelenklager und selbstschmierende Gleitlager, insbesondere sogenannte DU-Buchsen, bewährt.According to the prior art, in particular spherical plain bearings and self-lubricating slide bearings, in particular so-called DU bushings, have proven to be suitable for the center bearing.

Gemäß dem Stand der Technik werden in die Scherenblätter Bohrungen eingebracht, die derart ausgeführt werden, dass sie einen geeigneten Lagersitz für das zu verwendende Lager bilden.According to the prior art, holes are made in the scissor blades, which are made such that they form a suitable bearing seat for the bearing to be used.

Dabei müssen die Bohrungen nicht nur hinsichtlich ihrer Größe, sondern auch hinsichtlich ihrer Ausführung, beispielsweise der Oberflächenbeschaffenheit, derart gestaltet sein, dass sie als Lagersitz für das zu verwendende Lager geeignet sind. Da es sich bei derartigen Scherenhubtischen in der Regel um Einzelanfertigungen handelt, die nach Kundenwunsch spezifiziert werden, bedeutet dies einen hohen Fertigungsaufwand. Weiterhin ist ein nachträglicher Austausch der Lager, beispielsweise bei Reparatur- oder Wartungsarbeiten, schwierig, wenn beispielsweise Lageraußenringe in die Lagersitze eingepresst sind. Auch wird bei einem Lagerschaden zumeist die Schere so stark beschädigt, dass hier ein erheblicher Reparaturaufwand oder eventuell auch der Tausch der gesamten Innenschere erforderlich ist. Ein Wechsel auf einen anderen Lagertyp oder eine andere Lagerbaugröße kann ebenfalls nicht in einfacher Weise realisiert werden.The holes must not only in size, but also in terms of their design, such as the surface finish, be designed so that they are suitable as a bearing seat for the bearing to be used. Since such scissor lift tables usually are custom-made, which are specified according to customer requirements, this means a high production cost. Furthermore, a subsequent replacement of the stock, for example, during repair or maintenance, difficult if, for example, bearing outer rings are pressed into the bearing seats. Also, in a bearing damage usually the scissors are so badly damaged that a significant repair or possibly the exchange of the entire inner scissors is required here. A change to another type of bearing or other bearing size can also not be realized in a simple manner.

Aus DE 20 2006 012 777 U1 ist eine Hubvorrichtung nach dem Oberbegriff von Anspruch 1 bekannt, bei welcher das Scherenmittenlager auswechselbar gestaltet ist. Der Wechsel ist jedoch beschwerlich, weil dazu der Hubtisch wenigstens teilweise zerlegt werden muss. Dieser Vorgang nimmt viel Zeit in Anspruch.Out DE 20 2006 012 777 U1 is a lifting device according to the preamble of claim 1 is known, in which the scissor central bearing is designed to be interchangeable. However, the change is cumbersome, because to the lifting table must be at least partially disassembled. This process takes a long time.

DIE ERFINDUNGTHE INVENTION

Die Erfindung hat daher zur Aufgabe, einen Scherenhubtisch zu schaffen, bei dem Fertigung, Montage und Demontage der Scherenblattpaare und deren Mittenlager in einfacherer und kostengünstigerer Weise möglich sind.The invention therefore has for its object to provide a scissor lift, in the manufacture, assembly and disassembly of the Scherenblattpaare and the center bearing are possible in a simpler and cheaper way.

Die Aufgabe wird gelöst durch einen Scherenhubtisch nach Anspruch 1 und ein Baukastensystem für einen solchen Scherenhubtisch nach Anspruch 10. Die Unteransprüche betreffen vorteilhafte Ausführungsformen.The object is achieved by a scissor lift according to claim 1 and a modular system for such scissor lift according to claim 10. The dependent claims relate to advantageous embodiments.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass wenigstens ein Scherenblatt eines Scherenblattpaares ein mit dem Scherenblatt lösbar verbundenes Lageraufnahmeelement zur Aufnahme eines Mittenlagers aufweist. Zum Wechsel des Mittenlagers ist eine Entlastungseinrichtung zur Entlastung des Mittenlagers vorgesehen.According to the invention the object is achieved in that at least one scissor blade of a pair of scissor blades has a releasably connected to the scissor blade bearing receiving element for receiving a center bearing. To change the center bearing a relief device to relieve the center bearing is provided.

Das Lageraufnahmeelement, das vorzugsweise in eine passende Ausnehmung, die beispielsweise als Bohrung ausgeführt sein kann, des Scherenblattes aufgenommen ist, ist aufgrund seiner lösbaren Verbindung mit dem Scherenblatt leicht montier- bzw. demontierbar. Der Vorteil derartiger, mit dem Scherenblatt lösbar verbundener Lageraufnahmeelemente besteht darin, dass bei der Fertigung der Scherenblätter kein Lagersitz im Scherenblatt angefertigt werden muss, sondern lediglich für eine Verbindbarkeit des Scherenblattes mit dem Lageraufnahmeelement gesorgt werden muss. Ist hierfür eine Ausnehmung zu fertigen, welche das Lageraufnahmeelement im Innern des Scherenblatts aufnimmt, so kann das Lager innerhalb des Scherenblattes, d.h. in der gleichen Position vorgesehen werden, in der es sich auch bei einem konventionellen Scherenblatt befinden würde, d.h. es wird kein zusätzlicher Bauraum in die Breite des Scherenblattpaares benötigt.The bearing receiving element, which is preferably accommodated in a matching recess, which may be embodied, for example, as a bore, of the scissor blade, is easily assembled or disassembled due to its detachable connection with the scissor blade. The advantage of such, with the scissor blade releasably connected bearing receiving elements is that in the production of scissor blades no bearing seat must be made in the scissor blade, but only for a connectivity of the scissor blade with the bearing receiving element must be taken. If this is a recess to produce, which receives the bearing receiving element in the interior of the scissors blade, the bearing can be provided within the scissor blade, ie in the same position in which it would also be in a conventional scissor blade, ie there is no additional Required space in the width of the pair of scissor blades.

Das Lageraufnahmeelement weist erfindungsgemäß zwei wesentliche Merkmale auf. Zum einen ist es derart gestaltet, dass es mit dem Scherenblatt lösbar verbunden werden kann, wofür es vorteilhafterweise einen Verbindungsbereich, beispielsweise einen Flansch aufweist. Weiterhin muss es in seiner Außenkontur derart gestaltet sein, dass es mit dem Scherenblatt verbindbar ist.The bearing receiving element according to the invention has two essential features. On the one hand, it is designed such that it can be detachably connected to the scissor blade, for which purpose it advantageously has a connecting region, for example a flange. Furthermore, it must be designed in its outer contour so that it is connectable to the scissor blade.

Das Lageraufnahmeelement ist derart gestaltet, dass es zur Aufnahme des vorgesehenen Lagers geeignet ist, d.h. es weist einen Aufnahmebereich, beispielsweise eine Bohrung für ein zu verwendendes Lager auf, der so gestaltet ist, dass er für den verwendeten Lagertyp einen geeigneten Lagersitz darstellt.The bearing receiving element is designed so that it is suitable for receiving the intended bearing, i. it has a receiving area, for example a bore for a bearing to be used, which is designed so that it represents a suitable bearing seat for the bearing type used.

Dies kann auch im Falle einer Gelenklagerung eine Aufnahme für einen Bolzen sein, der vorzugsweise verdrehsicher aufgenommen wird und im Gelenklager des anderen Scherenblatts des Scherenblattpaares drehbar gelagert ist. Der Vorteil, der hierdurch realisiert wird, ist, dass während die großformatigen Scherenblätter lediglich mit einer für die Lageraufnahmeelemente geeigneten Schnittstelle, die vorzugsweise für alle Typen von Lageraufnahmeelementen gleich gestaltet ist, versehen werden müssen, die Lagersitze, an die unter Umständen hohe Toleranzanforderungen bestehen, in verhältnismäßig kleinen, gut handhabbaren Teilen gefertigt werden. Da die Lager auch lediglich in die Lageraufnahmeelemente eingebracht, beispielsweise verpresst sind, lässt sich nun in vorteilhafter Weise das Lageraufnahmeelement gemeinsam mit dem Lager austauschen, was aufgrund der lösbaren Verbindung in einfacher Weise in der Regel vor Ort und im günstigsten Fall sogar ohne Ausbau der Scherenblätter aus dem Scherenhubtisch erfolgen kann.This can also be in the case of a joint bearing a receptacle for a bolt, which is preferably received against rotation and is rotatably mounted in the joint bearing of the other scissor blade of the scissor blade pair. The advantage realized thereby is that while the large-format scissor blades only need to be provided with an interface suitable for the bearing-receiving elements, which is preferably the same for all types of bearing-receiving elements, the bearing seats, which may have high tolerance requirements, be made in relatively small, easy to handle parts. Since the bearings are also incorporated only in the bearing receiving elements, for example Pressed, can now be exchanged in an advantageous manner, the bearing support member together with the bearing, which can be done due to the detachable connection in a simple manner usually on site and in the best case, even without removing the scissor blades from the scissor lift.

Erfindungsgemäß kann daher ein Baukastensystem für den Einbau bzw. Austausch von Mittenlagern in Scherenhubtischen bereit gestellt werden. Die Idee des Baukastensystems beruht darauf, dass die Scherenblätter in ihren durch Mittenlager miteinander zu verbindenden Bereichen Verbindungsmittel, insbesondere Ausnehmungen aufweisen. Weiterhin ist eine Mehrzahl verschiedener Typen Lageraufnahmeelemente verfügbar und wahlweise mit den Scherenblättern verbindbar. Die verschiedenen Typen Lageraufnahmeelemente weisen verschiedene, jeweils für das im Lager aufzunehmende jeweilige Mittenlager passende Innenkonturen auf. Dieses erfindungsgemäße Baukastensystem ermöglicht es, in einfacher Weise verschiedene Mittenlager und Scherenblätterkombinationen miteinander zu kombinieren.Therefore, according to the invention, a modular system for the installation or replacement of center bearings in scissor lift tables can be provided. The idea of the modular system is based on the fact that the scissor blades have connecting means, in particular recesses, in their areas to be interconnected by center bearings. Furthermore, a plurality of different types of bearing receiving elements is available and optionally connectable with the scissor blades. The different types bearing receiving elements have different, each for the male to be accommodated in the respective center bearing suitable inner contours. This modular system according to the invention makes it possible to easily combine different center bearings and scissor blade combinations with each other.

Weiterhin können Mittenlager in einfacher Weise gegeneinander ausgetauscht werden, beispielsweise wenn sich die Auslegung eines Mittenlagers nachträglich als fehlerhaft erweist, ein Lager verschlissen und ein baugleiches Lager nicht mehr verfügbar ist. Jedenfalls ist gegenüber herkömmlichen Lagerungen der Austausch eines Lagers auch gegen ein identisches Lager vor Ort in erheblicher Weise vereinfacht.Furthermore, center bearings can be exchanged in a simple manner against each other, for example, if the design of a center bearing subsequently proves to be faulty, worn out a bearing and a similar bearing is no longer available. In any case, in comparison to conventional bearings, the replacement of a bearing is also considerably simplified in comparison with an identical bearing on site.

KURZBESCHREIBUNG DER ZEICHNUNGSABBILDUNGENBRIEF DESCRIPTION OF THE DRAWING FIGURES

Die Erfindung wird im Folgenden anhand der Figuren 1 bis 4 schematisch näher erläutert.

Figur 1
- zeigt eine schematische Darstellung eines beispielhaften erfindungsgemäßen Scherenhubtisches,
Figur 2
- zeigt schematisch eine beispielhafte Darstellung einer Schere eines beispielhaften erfindungsgemäßen Hubtisches,
Figur 3
- zeigt schematisch eine Explosionsdarstellung der Verbindung zweier Scherenblätter durch das Mittenlager bei einem beispielhaften erfindungsgemäßen Scherenhubtisch,
Figur 4
- zeigt eine ähnliche beispielhafte schematische Darstellung wie Figur 3 unter Verwendung eines anderen Mittenlagertyps.
The invention will be described below with reference to the FIGS. 1 to 4 schematically explained in more detail.
FIG. 1
FIG. 2 shows a schematic representation of an exemplary scissor lift table according to the invention, FIG.
FIG. 2
FIG. 2 schematically shows an exemplary illustration of a pair of scissors of an exemplary lifting table according to the invention, FIG.
FIG. 3
FIG. 2 shows schematically an exploded view of the connection of two scissor blades through the center bearing in an exemplary scissor lift table according to the invention, FIG.
FIG. 4
shows a similar exemplary schematic representation as FIG. 3 using another center bearing type.

BESTER WEG ZUR AUSFÜHRUNG DER ERFINDUNGBEST MODE FOR CARRYING OUT THE INVENTION

Bei dem beispielhaften erfindungsgemäßen Scherenhubtisch sind jeweils zwei Scherenblätter 3 mit einem Mittenlager 2, welches in Lageraufnahmeelemente 4 aufgenommen ist, zu Scherenblattpaaren verbunden. Die beiden Scherenblattpaare sind durch Querverstrebungselemente 14 zu einer Schere 1 verbunden.In the exemplary scissor lift according to the invention, two scissor blades 3 each having a center bearing 2, which is accommodated in bearing receiving elements 4, are connected to scissor blade pairs. The two pairs of scissors blades are connected by cross bracing elements 14 to form a pair of scissors 1.

Die Scherenblätter 3 weisen mit den Lageraufnahmeelementen 4 kompatible Verbindungsmittel 5 in Form von Ausnehmungen auf, in die die Lageraufnahmeelemente 4 eingesetzt werden. Ein im gezeigten Beispiel als Flansch ausgeführter Verbindungsbereich 6 der Lageraufnahmeelemente 4 dient zur lösbaren, verdrehsicheren Befestigung der Lageraufnahmeelemente 4 in den Scherenblättern 3.The scissor blades 3 have with the bearing receiving elements 4 compatible connecting means 5 in the form of recesses into which the bearing receiving elements 4 are used. A connecting region 6 of the bearing receiving elements 4 designed as a flange in the example shown serves for the detachable, torsion-proof attachment of the bearing receiving elements 4 in the scissor blades 3.

Die beispielhaften Scherenhubtische können, um den Austausch der Lageraufnahmeelemente weiter zu vereinfachen, auch über eine Entlastungseinrichtung 13 verfügen, die dazu dient, die Schere in einer bestimmten Hubtischposition derart zu fixieren, dass das Mittenlager lastfrei wird und so im idealen Fall ohne jede weitere Demontagemaßnahme aus dem Scherenhubtisch ausgebaut werden kann.The exemplary scissor lift tables can, in order to further simplify the replacement of the bearing support elements, also have a relief device 13 which serves to fix the scissors in a specific lift table position such that the center bearing is free of load and thus in the ideal case without any further dismantling measure the scissor lift can be expanded.

In der einfachsten Ausführungsform können diese Entlastungseinrichtungen 13 in Form von Bohrungen ausgestaltet sein, die sich in den Scherenblättern 3 befinden und so gestaltet sind, dass sie sich in der für die Demontage gewünschten Position des Scherenhubtisches derart überdecken, dass ein Fixierelement, beispielsweise ein Steckbolzen, hindurch gesteckt und so die sonst vom Mittenlager aufzunehmenden Lasten von dem Steckbolzen aufgenommen werden können.In the simplest embodiment, these relief devices 13 may be configured in the form of bores which are located in the scissor blades 3 and which are designed such that they overlap in the desired position for disassembly of the scissor lift so that a fixing element, for example a locking bolt, inserted through it and so the otherwise be absorbed by the center bearing loads can be absorbed by the socket pin.

Bei der beispielhaften Ausführungsform gemäß Figur 3 wird als Lager ein Gelenklager 11 verwendet. Dementsprechend ist eines der Lageraufnahmeelemente 4 mit einem Lagersitz 10 für den Außenring des Gelenklagers 11 versehen.In the exemplary embodiment according to FIG. 3 is used as a bearing joint bearing 11. Accordingly, one of the bearing receiving elements 4 is provided with a bearing seat 10 for the outer ring of the spherical bearing 11.

Das Lageraufnahmeelement 4 im anderen Scherenblatt 3 des Scherenblattpaares weist eine Aufnahme für einen Bolzen 12 mit einer Verdrehsicherung 15 auf. Der Bolzen 12 ist im gezeigten Beispiel die Welle des Gelenklagers 11 und dementsprechend als geeigneter Lagersitz ausgeführt, im gezeigten Beispiel mit Sprengringsicherung.The bearing receiving element 4 in the other scissor blade 3 of the scissor blade pair has a receptacle for a bolt 12 with an anti-rotation 15. The bolt 12 is in the example shown, the shaft of the joint bearing 11 and accordingly designed as a suitable bearing seat, in the example shown with snap ring fuse.

Figur 4 zeigt eine weitere beispielhafte Ausführungsform, bei der beide Scherenblätter 3 des gezeigten Scherenblattpaares mit Lageraufnahmeelementen 4 verbunden sind. Im gezeigten Beispiel nehmen beide Lageraufnahmeelemente 4 Lagerbuchsen 8 mit einer gemeinsamen Welle 9 auf. Jede der beiden Lagerbuchsen 8 bildet ein Gleitlager mit der Welle 9. In vorteilhafter Weise kann dieses Lager als selbstschmierendes Lager, beispielsweise als DU-Lager ausgeführt sein. FIG. 4 shows a further exemplary embodiment in which both scissor blades 3 of the pair of scissor blades shown are connected to bearing receiving elements 4. In the example shown take both bearing receiving elements 4 bearing bushes 8 with a common shaft 9. Each of the two bearing bushes 8 forms a plain bearing with the shaft 9. In an advantageous manner, this bearing can be designed as a self-lubricating bearing, for example as a DU bearing.

In den gezeigten Beispielen dienen zur lösbaren Verbindung der Lageraufnahmeelemente 4 mit den Scherenblättern 3 Schrauben als lösbare Befestigungselemente, welche durch die als Flansche 6 ausgeführten Verbindungsbereiche der Lageraufnahmeelemente 4 in dafür vorgesehene Bohrungen 16 der Scherenblätter 3 eingeschraubt werden.In the examples shown serve for releasably connecting the bearing receiving elements 4 with the scissor blades 3 screws as releasable fasteners, which are screwed through the designed as flanges 6 connecting portions of the bearing support members 4 in designated holes 16 of the scissor blades 3.

Claims (10)

  1. Scissors-type lifting table, scissors-type support (1), having scissors-type blades (3) connected into pairs of scissor blades by a central bearing (2), wherein at least one scissor blade (3) of one pair of scissor blades has a bearing receiving element (4) detachably connected to the scissor blade (3) for receiving the central bearing (2),
    characterised in
    that the scissors-type lifting table has a release device (13) for releasing the scissors central bearing (2).
  2. Scissors-type lifting table according to claim 1, characterised in
    that the bearing receiving element (4) is housed in a close-fitting recess (5), more particularly bore, of the scissor blade (3).
  3. Scissors-type lifting table according to claim 1 or 2, characterised in
    that the bearing receiving element (4) has a connection area (6), more particularly a flange.
  4. Scissors-type lifting table according to one of the preceding claims,
    characterised in
    that the bearing receiving element (4), preferably its connecting area (6) is connected, preferably screwed, to the scissor blade (3) by releasable fastening elements.
  5. Scissors-type lifting table according to one of the preceding claims,
    characterised in
    that the bearing receiving element (4) has a bearing seat (7) for the bearing bushing (8) of a slide bearing, more particularly a DU bearing.
  6. Scissors-type lifting table according to claim 5, characterised in
    that both scissor blades (3) of a scissor blade pair have bearing receiving elements (4) wherein a bearing bushing (8) of a slide bearing, more particularly a DU bearing, is housed inside each of the bearing receiving elements (4) with a common shaft (9).
  7. Scissors-type lifting table according to one of claims 1 to 4,
    characterised in
    that the bearing receiving element (4) has a bearing seat (10) for the outer ring of an articulated bearing.
  8. Scissors-type lifting table according to claim 7, characterised in
    that one scissor blade (3) of a scissors blade pair has a bearing receiving element (4) which is modified for the, preferably rotationally secured, receiving of a bolt (12).
  9. Scissors-type lifting table according to one of the preceding claims,
    characterised in
    that the release device (13) has locators, more particularly bores, for a blocking element, more particularly a push-fit bolt.
  10. Structural kit for the installation and/or replacement
    of central bearings (2) in scissors-type lifting tables according to one of the preceding claims, characterised in
    that scissor blades (3) have connecting means (5), more particularly recesses, in their areas which are to be connected to one another by central bearings (2), wherein a plurality of different types of bearing receiving elements (4) is available and can be connected selectively to the scissor blades (3) wherein the different types of bearing receiving elements (4) have different internal contours (7, 10) which each match the central bearing which is to be received in the respective bearing receiving element (4).
EP13753095.2A 2012-09-01 2013-08-14 Scissor-type lifting table Active EP2723671B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL13753095T PL2723671T3 (en) 2012-09-01 2013-08-14 Scissor-type lifting table
SI201330007T SI2723671T1 (en) 2012-09-01 2013-08-14 Scissor-type lifting table

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012008386U DE202012008386U1 (en) 2012-09-01 2012-09-01 Scissor
PCT/EP2013/002461 WO2014032776A1 (en) 2012-09-01 2013-08-14 Scissor-lift platform

Publications (2)

Publication Number Publication Date
EP2723671A1 EP2723671A1 (en) 2014-04-30
EP2723671B1 true EP2723671B1 (en) 2014-10-15

Family

ID=49035516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13753095.2A Active EP2723671B1 (en) 2012-09-01 2013-08-14 Scissor-type lifting table

Country Status (10)

Country Link
US (1) US9828221B2 (en)
EP (1) EP2723671B1 (en)
KR (1) KR101706002B1 (en)
CN (1) CN104603044B (en)
DE (1) DE202012008386U1 (en)
ES (1) ES2527406T3 (en)
PL (1) PL2723671T3 (en)
PT (1) PT2723671E (en)
SI (1) SI2723671T1 (en)
WO (1) WO2014032776A1 (en)

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Also Published As

Publication number Publication date
US20150298949A1 (en) 2015-10-22
WO2014032776A1 (en) 2014-03-06
PL2723671T3 (en) 2015-03-31
PT2723671E (en) 2015-01-13
DE202012008386U1 (en) 2013-12-02
CN104603044A (en) 2015-05-06
KR20150052098A (en) 2015-05-13
US9828221B2 (en) 2017-11-28
CN104603044B (en) 2017-03-01
KR101706002B1 (en) 2017-02-13
EP2723671A1 (en) 2014-04-30
ES2527406T3 (en) 2015-01-23
SI2723671T1 (en) 2015-01-30

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