EP0524271B1 - Load-lifting device - Google Patents

Load-lifting device Download PDF

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Publication number
EP0524271B1
EP0524271B1 EP92900406A EP92900406A EP0524271B1 EP 0524271 B1 EP0524271 B1 EP 0524271B1 EP 92900406 A EP92900406 A EP 92900406A EP 92900406 A EP92900406 A EP 92900406A EP 0524271 B1 EP0524271 B1 EP 0524271B1
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EP
European Patent Office
Prior art keywords
load
lifting device
arms
locking
securing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP92900406A
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German (de)
French (fr)
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EP0524271A1 (en
Inventor
Guido Baumgartner
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Heppenstall Holding AG
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Heppenstall Holding AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means

Definitions

  • the invention relates to a load lifting device according to the preamble of claim 1.
  • Load lifting devices are known for example from DE-PS 17 46 42 in various forms.
  • the load securing devices consist of brackets which can be pivoted transversely to the axis of the supporting beam from a rest position, in which the securing arms are located above the supporting beam, into the securing position, in which the securing arms are located under the attached load. It is disadvantageous that on the one hand the swiveling path of the securing arms from the upper position into the lower position takes up a large amount of lateral space.
  • the securing arms are only effective at a certain distance from the lifting magnet, so that there may be a free space between the load and the securing arm, so that if the magnetic force fails, the load falls onto the securing arm, which can damage the securing arm and the securing device .
  • the above disadvantages are partly remedied in that securing arms can be swung out and in about a vertical axis lying transversely to the electromagnet from an exemption outside the electromagnet to a securing position transversely to the electromagnet .
  • the securing arms have the above-mentioned disadvantageous free distance from the attached load.
  • DE 31 12 348 A1 describes a load lifting device which has a support beam with two load lifting magnets and a load securing device.
  • the latter consists of two rigid safety brackets, each of which has an upper, essentially horizontal support, at the ends of which vertically downwardly extending webs are formed, which in turn have short securing arms which, in the securing position, engage under an attached load.
  • the safety bars are pivotally attached to a lifting device.
  • This load securing device has a number of decisive disadvantages. Due to the rigid design of the safety bars, they require a relatively large amount of space when swiveling out to the side; in order to limit the latter, the securing arms can only be short, so that they cannot reach under the attached load over the entire width.
  • the load lifting device is therefore only suitable for individual slabs, but not for holding bundles that would fall through between the safety arms if the load lifting magnets failed.
  • the rigid design of the safety bars limits the use of the load lifting device to very narrow dimensions of the slabs.
  • the requirement that the safety bar with its upper horizontal support must rest on the supporting beam in the securing position also works in this sense. This does not result in an adaptation of the rigid securing bracket to different load dimensions, nor is the securing arm placed on the load, so that a free gap remains between the load and the securing arm, which is associated with the disadvantages mentioned at the outset.
  • the object of the invention is to design a load lifting device of the type mentioned in such a way that the load securing device manages with a minimum of lateral clearance, ensures optimal securing of the attached load and nevertheless permits a relatively light construction.
  • the securing arms are fastened to support columns which are driven to be vertically liftable and lowerable results in an optimal vertical force application for a load to be secured, so that the load securing device can be constructed relatively easily. Nevertheless, a secure hold of the attached load is guaranteed, since the securing arms are moved in the securing position against the attached load and therefore there is no play between the attached load and the securing arms.
  • the load securing device also requires only a small lateral clearance next to the supporting beam, since the securing arms can be pivoted about the axes of the supporting columns from the release parallel to the supporting beam into the securing position transversely to the supporting beam.
  • the support arms ensure a larger free space for receiving an attached load in the pivoted-out state.
  • the support columns are brought into contact laterally with the attached load, so that lateral play between the attached load and the support column is also avoided, which further improves the securing effect.
  • the lifting device can be designed as a screw spindle or a toothed rack. However, it is more advantageous to design the lifting device according to claim 2.
  • a particularly simple and safe configuration of the load lifting device results from claim 3, since with the pivoting out and in of the support arms and thus the support columns the pivoting out and in of the securing arms is also accomplished, so that no additional drive is required for this. It is also expedient to guide the support columns in guide arms, whereby the stability of the load securing device is improved.
  • the load lifting device can only have one load securing device, but expediently, two load securing devices are arranged on the supporting beam.
  • a particularly simple design and synchronization of the drive of the load securing devices results from claim 7.
  • the load lifting device has a supporting beam 2 which is formed from two C-shaped carriers 4 which are connected to one another.
  • a supporting beam 2 which is formed from two C-shaped carriers 4 which are connected to one another.
  • two articulated eyelets 6 are arranged for attaching the support beam to a support cable.
  • Two lifting magnets 8a, 8b are articulated on the underside of the supporting beam 2.
  • the support beam 2 is equipped with two load securing devices 10a, 10b.
  • the load securing devices 10a, 10b contain a lifting device 12 which is fastened to the supports 4 and which is formed from telescopic pipes 14, 16, the outer pipe 14 being fastened to the supports 4.
  • a hydraulic piston / cylinder unit 18 for driving the lifting device is arranged within the inner tube 16.
  • the inner tube 16 carries at the upper end a cylindrical head 20 on which two support arms 22a, 22b are pivotally arranged. At their outer ends, these in turn have support columns 24a, 24b which are arranged such that they can rotate, and securing arms 26a, 26b are fastened to their lower ends.
  • the support columns 24a, 24b are also guided on guide arms 28a, 28b, which are pivotably connected to the frame, ie the outer tube 14 of the lifting device 12.
  • Each support column 24a, 24b is provided near the support arm 22a, 22b with a bracket 30a, 30b, on which coupling rods 32a, 32b are articulated, at corresponding pivot points 34a, 34b are attached to the head 20 of the lifting device.
  • the articulation points 34a, 34b are rigidly connected to the head 20.
  • the arrangement is such that the securing arms 26a, 26b point perpendicular to the vertical plane of the supporting beam when the supporting arms 22a, 22b and guide arms 28a, 28b are pivoted in, ie assume the securing position, as shown on the left-hand side of FIG. 3.
  • the coupling connection ensures that the securing arms 26a, 26b are aligned parallel to the vertical plane of the support beam, as shown on the right-hand side of FIG. 3.
  • a central drive 36 in the form of a piston / cylinder unit is also used to pivot the support arms 22a, 22b and the guide arms 28a, 28b in and out. arranged on the outer tube 14 of the lifting device 12 and aligned parallel to the support beam 2.
  • Two coupling rods 40a, 40b are articulated on the piston rod 38 of the piston / cylinder unit 36 and are articulated to the guide arms 28a, 28b. Only one load securing device 10a is equipped with this drive 36, the other load securing device 10b being connected to the first load securing device 10a by means of drive rods 42a, 42b.
  • the coupling rods connect the guide arms 28a, 28b of the load securing devices 10a, 10b to one another.
  • the operation is as follows.
  • the load securing devices 10a, 10b are in the release shown in FIG. 3 on the right-hand side, ie the lifting device 12 is lowered, the support arms 22a, 22b and the guide arms 28a, 28b are swung out and the securing arms 26a, 26b are parallel to the support beam 2.
  • the load securing devices 10a, 10b are pivoted by means of the drive 36 into the securing position shown on the left-hand side of FIG.
  • the piston / cylinder unit 36 swivels the guide arms 28a, 28b against the supporting beam 2
  • the coupling rods 32a, 32b simultaneously pivot the support columns 24a, 24b and thereby align the securing arms 26a, 26b transversely to the vertical plane of the support beam 2.
  • the piston / cylinder unit 18 of the load lifting device 12 is then actuated and the securing arms 26a, 26b are raised until they are in contact with the load attached to the load lifting magnet 8a, 8b.
  • the attached load is unlocked in the reverse order of the movement sequence of the load securing devices 10a, 10b described above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The load-lifting device described has a load-carrying beam (2) with lifting magnets (8a, 8b) underneath it. The load-carrying beam (2) is fitted with two load-securing devices (10a, 10b) with vertical support columns (24a, 24b) which can be raised and lowered on each side of the beam (2). These columns are rotatably mounted on upper support arms (22a, 22b) and have at their lower ends load-securing arms (26a, 26b) which can be swung in at right angles to the vertical to secure a load. A lifting device (12) can be used to bring the load-securing arms (26a, 26b) to rest against a load suspended from the magnets (8a, 8b).

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Lasthebevorrichtung gemäss Oberbegriff des Anspruches 1.The invention relates to a load lifting device according to the preamble of claim 1.

Stand der TechnikState of the art

Lasthebevorrichtungen sind beispielsweise aus der DE-PS 17 46 42 in verschiedenster Form bekannt. Bei einer Art solcher Lasthebevorrichtungen bestehen die Lastsicherungsvorrichtungen aus Bügeln, die quer zur Achse des Tragbalkens aus einer Ruhestellung, in der sich die Sicherungsarme über dem Tragbalken befinden, in die Sicherungsstellung einschwenkbar sind, in der sich die Sicherungsarme unter der anhängenden Last befinden. Nachteilig ist es dabei, dass einerseits der Schwenkweg der Sicherungsarme aus der oberen in die untere Stellung sehr grossen seitlichen Freiraum beansprucht. Zum anderen sind die Sicherungsarme nur in einem bestimmten Abstand vom Lasthebemagnet wirksam, sodass zwischen der Last und dem Sicherungsarm gegebenenfalls ein Freiraum besteht, so dass beim Ausfall der Magnetkraft die Last auf den Sicherungsarm herunterfällt, was zu einer Beschädigung des Sicherungsarmes und der Sicherungsvorrichtung führen kann. Bei einer anderen Ausführungsform der Lasthebevorrichtung, welche jener der eingangs genannten Art entspricht, werden obige Nachteile zum Teil dadurch behoben, dass Sicherungsarme um eine quer zum Elektromagneten liegende vertikale Achse aus einer Freistellung ausserhalb des Elektromagneten in einen Sicherungsstellung quer zum Elektromagneten aus- und einschwenkbar sind. Auch hier weisen die Sicherungsarme den oben erwähnten nachteiligen freien Abstand zur anhängenden Last auf.Load lifting devices are known for example from DE-PS 17 46 42 in various forms. In one type of load lifting device of this type, the load securing devices consist of brackets which can be pivoted transversely to the axis of the supporting beam from a rest position, in which the securing arms are located above the supporting beam, into the securing position, in which the securing arms are located under the attached load. It is disadvantageous that on the one hand the swiveling path of the securing arms from the upper position into the lower position takes up a large amount of lateral space. On the other hand, the securing arms are only effective at a certain distance from the lifting magnet, so that there may be a free space between the load and the securing arm, so that if the magnetic force fails, the load falls onto the securing arm, which can damage the securing arm and the securing device . In another embodiment of the load lifting device, which corresponds to that of the type mentioned above, the above disadvantages are partly remedied in that securing arms can be swung out and in about a vertical axis lying transversely to the electromagnet from an exemption outside the electromagnet to a securing position transversely to the electromagnet . Here, too, the securing arms have the above-mentioned disadvantageous free distance from the attached load.

Die DE 31 12 348 A1 beschreibt eine Lasthebevorrichtung, die einen Tragbalken mit zwei Lasthebemagneten und eine Lastsicherungsvorrichtung aufweist. Letztere besteht aus zwei starren Sicherheitsbügeln, die jeweils einen oberen im wesentlichen waagrechten Träger aufweisen, an dessen Enden senkrecht nach unten verlaufende Stege angeformt sind, die wiederum kurze Sicherungsarme aufweisen, welche in Sicherungsstellung eine anhängende Last untergreifen. Die Sicherheitsbügel sind an einer Hebevorrichtung verschwenkbar befestigt. Diese Lastsicherungsvorrichtung weist eine Reihe von entscheidenden Nachteilen auf. Aufgrund der starren Ausbildung der Sicherheitsbügel benötigen diese beim seitlichen Ausschwenken relativ grossen Freiraum; um letzteren zu begrenzen können die Sicherungsarme nur kurz sein, so dass sie die anhängende Last nicht über die ganze Breite untergreifen können. Die Lasthebevorrichtung ist deshalb nur für einzelne Brammen geeignet nicht jedoch zur Aufnahme von Bündelwaren, die beim Ausfall der Lasthebemagnete zwischen dem Sicherungsarmen durchfallen würden. Die starre Ausbildung der Sicherheitsbügel beschränkt die Verwendung der Lasthebevorrichtung auf ganz eng begrenzte Dimensionen der Brammen. In diesem Sinne wirkt auch die Forderung, dass der Sicherheitsbügel in Sicherungsstellung mit seinem oberen waagrechten Träger auf dem Tragbalken aufliegen muss. Daraus ergibt sich weder eine Anpassung des starren Sicherungsbügels an verschiedene Lastdimensionen noch ein Anlegen der Sicherungsarme an der Last, so dass ein freier Spalt zwischen Last und Sicherungsarm verbleibt der, mit den eingangs genannten Nachteilen verbunden ist.DE 31 12 348 A1 describes a load lifting device which has a support beam with two load lifting magnets and a load securing device. The latter consists of two rigid safety brackets, each of which has an upper, essentially horizontal support, at the ends of which vertically downwardly extending webs are formed, which in turn have short securing arms which, in the securing position, engage under an attached load. The safety bars are pivotally attached to a lifting device. This load securing device has a number of decisive disadvantages. Due to the rigid design of the safety bars, they require a relatively large amount of space when swiveling out to the side; in order to limit the latter, the securing arms can only be short, so that they cannot reach under the attached load over the entire width. The load lifting device is therefore only suitable for individual slabs, but not for holding bundles that would fall through between the safety arms if the load lifting magnets failed. The rigid design of the safety bars limits the use of the load lifting device to very narrow dimensions of the slabs. The requirement that the safety bar with its upper horizontal support must rest on the supporting beam in the securing position also works in this sense. This does not result in an adaptation of the rigid securing bracket to different load dimensions, nor is the securing arm placed on the load, so that a free gap remains between the load and the securing arm, which is associated with the disadvantages mentioned at the outset.

Darstellung der ErfindungPresentation of the invention

Aufgabe der Erfindung ist es, eine Lasthebevorrichtung der eingangs genannten Art so auszubilden, dass die Lastsicherungsvorrichtung mit einem Minimum an seitlichem Freiraum auskommt, eine optimale Sicherung der anhängenden Last gewährleistet und dennoch eine relativ leichte Bauart gestattet.The object of the invention is to design a load lifting device of the type mentioned in such a way that the load securing device manages with a minimum of lateral clearance, ensures optimal securing of the attached load and nevertheless permits a relatively light construction.

Die Aufgabe wird erfindungsgemäss durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.The object is achieved according to the invention by the characterizing features of claim 1.

Dadurch, dass die Sicherungsarme an vertikal heb- und senkbar angetriebenen Tragsäulen befestigt sind, ergibt sich ein optimaler vertikaler Kraftangriff für eine zu sichernde Last, so dass die Lastsicherungsvorrichtung relativ leicht gebaut werden kann. Dennoch ist ein sicherer Halt der anhängenden Last gewährleistet, da die Sicherungsarme in Sicherungsstellung gegen die anhängende Last gefahren werden und somit kein Spiel zwischen der anhängenden Last und den Sicherungsarmen gegeben ist. Im übrigen beansprucht die Lastsicherungsvorrichtung auch nur einen geringen seitlichen Freiraum neben dem Tragbalken, da die Sicherungsarme um die Achsen der Tragsäulen aus der Freistellung parallel zum Tragbalken in die Sicherungsstellung quer zum Tragbalken verschwenkbar sind. Durch die schwenkbare Anordnung der Tragarme an der Hebevorrichtung wird weiter erreicht, dass die Tragarme im ausgeschwenkten Zustand einen grösseren Freiraum zur Aufnahme einer anhängenden Last gewährleisten. Durch Einschwenken der Tragarme werden die Tragsäulen seitlich an der anhängenden Last zum Anliegen gebracht, so dass auch ein seitlicher Spielraum zwischen der anhängenden Last und der Tragsäule vermieden wird, wodurch der Sicherungseffekt weiter verbessert wird.The fact that the securing arms are fastened to support columns which are driven to be vertically liftable and lowerable results in an optimal vertical force application for a load to be secured, so that the load securing device can be constructed relatively easily. Nevertheless, a secure hold of the attached load is guaranteed, since the securing arms are moved in the securing position against the attached load and therefore there is no play between the attached load and the securing arms. In addition, the load securing device also requires only a small lateral clearance next to the supporting beam, since the securing arms can be pivoted about the axes of the supporting columns from the release parallel to the supporting beam into the securing position transversely to the supporting beam. Due to the pivotable arrangement of the support arms on the lifting device, it is further achieved that the support arms ensure a larger free space for receiving an attached load in the pivoted-out state. By pivoting the support arms, the support columns are brought into contact laterally with the attached load, so that lateral play between the attached load and the support column is also avoided, which further improves the securing effect.

Vorteilhafte Ausgestaltungen der Lasthebevorrichtung sind in den Ansprüchen 2 bis 7 beschrieben.Advantageous embodiments of the load lifting device are described in claims 2 to 7.

Bezüglich der Ausbildung der Hebevorrichtung ergeben sich verschiedene Möglichkeiten, so kann diese beispielsweise als Schraubspindel oder Zahnstange ausgestaltet sein. Vorteilhafter ist jedoch eine Ausbildung der Hebevorrichtung nach Anspruch 2.There are various possibilities with regard to the design of the lifting device, for example it can be designed as a screw spindle or a toothed rack. However, it is more advantageous to design the lifting device according to claim 2.

Eine besonders einfache und sichere Ausgestaltung der Lasthebevorrichtung ergibt sich aus Anspruch 3, da mit dem Aus- und Einschwenken der Tragarme und damit der Tragsäulen gleichzeitig auch das Aus- und Einschwenken der Sicherungsarme bewerkstelligt wird, so dass hierfür kein zusätzlicher Antrieb erforderlich ist. Zweckmässig ist es auch, die Tragsäulen gemäss Anspruch 4 in Führungsarmen zu führen, wodurch die Stabilität der Lastsicherungsvorrichtung verbessert wird.A particularly simple and safe configuration of the load lifting device results from claim 3, since with the pivoting out and in of the support arms and thus the support columns the pivoting out and in of the securing arms is also accomplished, so that no additional drive is required for this. It is also expedient to guide the support columns in guide arms, whereby the stability of the load securing device is improved.

Zum Aus- und Einschwenken der Tragsäulen sind verschiedene Antriebsmöglichkeiten denkbar, besonders vorteilhaft ist jedoch eine Ausgestaltung nach Anspruch 5.Various drive options are conceivable for swiveling the support columns in and out, but an embodiment according to claim 5 is particularly advantageous.

Die Lasthebevorrichtung kann lediglich eine Lastsicherungsvorrichtung aufweisen, zweckmässiger Weise sind jedoch zwei Lastsicherungsvorrichtungen am Tragbalken angeordnet. Eine besonders einfache Ausbildung und Synchronisation des Antriebes der Lastsicherungsvorrichtungen ergibt sich aus Anspruch 7.The load lifting device can only have one load securing device, but expediently, two load securing devices are arranged on the supporting beam. A particularly simple design and synchronization of the drive of the load securing devices results from claim 7.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Ein Ausführungsbeispiel der erfindungsgemässen Lasthebevorrichtung wird nachfolgend anhand der Zeichnungen näher beschrieben, dabei zeigen:

Figur 1
eine Lasthebevorrichtung mit zwei Lasthebemagneten und zwei Lastsicherungsvorrichtungen in Seitenansicht;
Figur 2
eine Lastsicherungsvorrichtung der Figur 1 im Grundriss; und
Figur 3
die Lastsicherungsvorrichtung der Figur 2 im Schnitt III-III der Figur 2.
An embodiment of the load lifting device according to the invention is described in more detail below with reference to the drawings, in which:
Figure 1
a load lifting device with two lifting magnets and two load securing devices in side view;
Figure 2
a load securing device of Figure 1 in plan; and
Figure 3
the load securing device of Figure 2 in section III-III of Figure 2.

Weg zur Ausführung der ErfindungWay of carrying out the invention

Wie insbesondere aus Figur 1 hervorgeht, weist die Lasthebevorrichtung einen Tragbalken 2 auf, der aus zwei miteinander verbundenen C-förmigen Trägern 4 gebildet ist. Am Tragbalken 2 sind zwei gelenkige Oesen 6 zum Anhängen des Tragbalkens an ein Tragseil angeordnet. Auf der Unterseite des Tragbalkens 2 sind zwei Lasthebemagneten 8a,8b angelenkt. Ferner ist der Tragbalken 2 mit zwei Lastsicherungsvorrichtungen 10a,10b ausgestattet.As can be seen in particular from FIG. 1, the load lifting device has a supporting beam 2 which is formed from two C-shaped carriers 4 which are connected to one another. On the support beam 2, two articulated eyelets 6 are arranged for attaching the support beam to a support cable. Two lifting magnets 8a, 8b are articulated on the underside of the supporting beam 2. Furthermore, the support beam 2 is equipped with two load securing devices 10a, 10b.

Die Lastsicherungsvorrichtungen 10a,10b enthalten eine an den Trägern 4 befestigte Hebevorrichtung 12, die aus teleskopierbaren Rohren 14,16 gebildet ist, wobei das aussen liegende Rohr 14 an den Trägern 4 befestigt ist. Innerhalb des inneren Rohres 16 ist ein hydraulisches Kolben/Zylinder-Aggregat 18 zum Antrieb der Hebevorrichtung angeordnet. Das innere Rohr 16 trägt am oberen Ende einen zylindrischen Kopf 20 an dem zwei Tragarme 22a,22b verschwenkbar angeordnet sind. Diese tragen an ihren äusseren Enden wiederum drehbar angeordnete Tragsäulen 24a,24b, an deren unteren Enden Sicherungsarme 26a,26b befestigt sind. Die Tragsäulen 24a,24b sind überdies an Führungsarmen 28a,28b geführt, die verschwenkbar am Gestell, d.h. dem äusseren Rohr 14 der Hebevorrichtung 12 angelenkt sind. Jede Tragsäule 24a,24b ist nahe des Tragarmes 22a,22b mit einem Ausleger 30a,30b versehen, an denen Koppelstangen 32a,32b angelenkt sind, die an entsprechenden Gelenkpunkten 34a,34b am Kopf 20 der Hebevorrichtung befestigt sind. Die Gelenkpunkte 34a,34b sind starr mit dem Kopf 20 verbunden. Die Anordnung ist derart getroffen, dass die Sicherungsarme 26a,26b bei eingeschwenkten Tragarmen 22a,22b und Führungsarmen 28a,28b senkrecht zur Vertikalebene des Tragbalkens weisen, d.h. die Sicherungsstellung einnehmen, so wie dies auf der linken Seite der Figur 3 gezeigt ist. Bei ausgeschwenkten Tragarmen 22a,22b bzw. Führungsarmen 28a,28b sorgt die Koppelverbindung dafür, dass die Sicherungsarme 26a,26b parallel zur Vertikalebene des Tragbalkens ausgerichtet sind, so wie dies die rechte Seite der Figur 3 zeigt.The load securing devices 10a, 10b contain a lifting device 12 which is fastened to the supports 4 and which is formed from telescopic pipes 14, 16, the outer pipe 14 being fastened to the supports 4. A hydraulic piston / cylinder unit 18 for driving the lifting device is arranged within the inner tube 16. The inner tube 16 carries at the upper end a cylindrical head 20 on which two support arms 22a, 22b are pivotally arranged. At their outer ends, these in turn have support columns 24a, 24b which are arranged such that they can rotate, and securing arms 26a, 26b are fastened to their lower ends. The support columns 24a, 24b are also guided on guide arms 28a, 28b, which are pivotably connected to the frame, ie the outer tube 14 of the lifting device 12. Each support column 24a, 24b is provided near the support arm 22a, 22b with a bracket 30a, 30b, on which coupling rods 32a, 32b are articulated, at corresponding pivot points 34a, 34b are attached to the head 20 of the lifting device. The articulation points 34a, 34b are rigidly connected to the head 20. The arrangement is such that the securing arms 26a, 26b point perpendicular to the vertical plane of the supporting beam when the supporting arms 22a, 22b and guide arms 28a, 28b are pivoted in, ie assume the securing position, as shown on the left-hand side of FIG. 3. When the support arms 22a, 22b or guide arms 28a, 28b are pivoted out, the coupling connection ensures that the securing arms 26a, 26b are aligned parallel to the vertical plane of the support beam, as shown on the right-hand side of FIG. 3.

Zum Aus- und Einschwenken der Tragarme 22a,22b und der Führungsarme 28a,28b dient ein zentraler Antrieb 36 in Form eines Kolben/Zylinder-Aggregates, der ebenfalls am Gestell, d.h. am äusseren Rohr 14 der Hebevorrichtung 12 angeordnet und parallel zum Tragbalken 2 ausgerichtet ist. An der Kolbenstange 38 des Kolben/Zylinder-Aggregates 36 sind zwei Koppelstangen 40a,40b angelenkt, die mit den Führungsarmen 28a,28b gelenkig verbunden sind. Es ist lediglich eine Lastsicherungsvorrichtung 10a, mit diesem Antrieb 36 ausgestattet, wobei die andere Lastsicherungsvorrichtung 10b über Koppelstangen 42a,42b antriebsmässig mit der ersten Lastsicherungsvorrichtung 10a verbunden ist. Die Koppelstangen verbinden jeweils die Führungsarme 28a,28b der Lastsicherungsvorrichtungen 10a,10b miteinander.A central drive 36 in the form of a piston / cylinder unit is also used to pivot the support arms 22a, 22b and the guide arms 28a, 28b in and out. arranged on the outer tube 14 of the lifting device 12 and aligned parallel to the support beam 2. Two coupling rods 40a, 40b are articulated on the piston rod 38 of the piston / cylinder unit 36 and are articulated to the guide arms 28a, 28b. Only one load securing device 10a is equipped with this drive 36, the other load securing device 10b being connected to the first load securing device 10a by means of drive rods 42a, 42b. The coupling rods connect the guide arms 28a, 28b of the load securing devices 10a, 10b to one another.

Wie sich ohne weiteres aus den Zeichnungen ergibt, ist die Funktionsweise wie folgt. Zur Aufnahme einer Last an den Lasthebemagneten 8a,8b befinden sich die Lastsicherungsvorrichtungen 10a,10b in der in Figur 3 auf der rechten Seite dargestellten Freistellung, d.h. die Hebevorrichtung 12 ist abgesenkt, die Tragarme 22a,22b und die Führungsarme 28a,28b sind ausgeschwenkt und die Sicherungsarme 26a,26b liegen parallel zum Tragbalken 2. Sobald an den Lasthebemagneten 8a,8b eine Last anhängt, werden die Lastsicherungsvorrichtungen 10a,10b mittels des Antriebes 36 in die auf der linken Seite der Figur 3 gezeigte Sicherungsstellung verschwenkt, in dem das Kolben/Zylinder-Aggregat 36 die Führungsarme 28a,28b gegen den Tragbalken 2 schwenkt, wobei die Koppelstangen 32a,32b gleichzeitig die Tragsäulen 24a,24b verschwenken und dadurch die Sicherungsarme 26a,26b quer zur Vertikalebene des Tragbalkens 2 ausrichten. Daraufhin wird das Kolben/Zylinder-Aggregat 18 der Lasthebevorrichtung 12 betätigt und die Sicherungsarme 26a,26b soweit angehoben, bis sie an der an den Lasthebemagneten 8a,8b anhängenden Last anstehen. Das Entsichern der anhängenden Last geschieht in umgekehrter Reihenfolge des oben geschilderten Bewegungsablaufes der Lastsicherungsvorrichtungen 10a,10b.As is readily apparent from the drawings, the operation is as follows. For receiving a load on the lifting magnets 8a, 8b, the load securing devices 10a, 10b are in the release shown in FIG. 3 on the right-hand side, ie the lifting device 12 is lowered, the support arms 22a, 22b and the guide arms 28a, 28b are swung out and the securing arms 26a, 26b are parallel to the support beam 2. As soon as on the lifting magnet 8a, 8b is attached to a load, the load securing devices 10a, 10b are pivoted by means of the drive 36 into the securing position shown on the left-hand side of FIG. 3, in which the piston / cylinder unit 36 swivels the guide arms 28a, 28b against the supporting beam 2, the coupling rods 32a, 32b simultaneously pivot the support columns 24a, 24b and thereby align the securing arms 26a, 26b transversely to the vertical plane of the support beam 2. The piston / cylinder unit 18 of the load lifting device 12 is then actuated and the securing arms 26a, 26b are raised until they are in contact with the load attached to the load lifting magnet 8a, 8b. The attached load is unlocked in the reverse order of the movement sequence of the load securing devices 10a, 10b described above.

Claims (7)

  1. Load lifting device, with a load lifting magnet (8a,8b) and with a load locking device (10a,10b), which possesses vertical supporting columns (24a,24b), disposed on either side of the load lifting magnet (8a,8b) and each being capable of being swivelled around a vertical axis by means of a drive (36), on each of which are disposed locking arms (26a,26b) which, pointing towards each other in the locking position, grip fully under an attached load and in the free position are aligned outside the attached load, characterized in that the supporting columns (24a,24b) which are capable of swivelling around the vertical axes are each guided on guide arms (28a,28b) which are capable of swivelling inwards and outwards around a further vertical axis and are fixed, at the upper end, to supporting arms (22a,22b) which in turn are fixed, so as to be capable of swivelling around the further vertical axis, to a lifting device (12) which bears on a supporting beam (2) the underside of which possesses load lifting magnets (8a,8b) and which brings the locking arms (26a,26b), which in the locking position point towards each other, to bear on the underside of the load, the locking arms (26a,26b) being aligned in the free position outside the area of the load, parallel to the supporting beam (2).
  2. Load lifting device according to Claim 1, characterized in that the lifting device (12) is constructed as a telescopic column (14,16) which is preferably capable of being driven by means of a hydraulic piston/cylinder unit (18).
  3. Load lifting device according to Claim 1, characterized in that the supporting columns (24a,24b) are disposed on the supporting arms (22a,22b) so as to be capable of rotation and each possess booms (30a,30b) which are connected by means of coupling rods (32a,32b) to the lifting device (12) in such a way that when the supporting columns (24a,24b) are swivelled inwards towards the supporting beam (2) the locking arms (26a,26b) are swivelled out of a free position parallel to the supporting beam (2) into the locking position across the supporting beam (2).
  4. Load lifting device according to any one of Claims 1 to 3, characterized in that the guide arms (28a,28b) which are capable of swivelling inwards and outwards are coupled to the frame (14) of the lifting device (12).
  5. Load lifting device according to Claim 4, characterized in that the load locking device (10a) possesses a central drive (36), preferably a piston/cylinder unit, which acts on the guide arms (28a,28b) through coupling rods (40a,40b).
  6. Load lifting device according to any one of Claims 1 to 5, characterized in that it possesses two or more load locking devices (10a,10b).
  7. Load lifting device according to either of Claims 5 or 6, characterized in that one load locking device (10a) possesses a drive (36) and the further load locking device (10b) is coupled to the drive of the first, with preferably adjacent guide arms (28a,28b) being connected together by means of a coupling rod (42a,42b).
EP92900406A 1991-02-08 1991-12-16 Load-lifting device Expired - Lifetime EP0524271B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH39691 1991-02-08
CH396/91 1991-02-08
PCT/CH1991/000269 WO1992013792A1 (en) 1991-02-08 1991-12-16 Load-lifting device

Publications (2)

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EP0524271A1 EP0524271A1 (en) 1993-01-27
EP0524271B1 true EP0524271B1 (en) 1995-08-16

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EP92900406A Expired - Lifetime EP0524271B1 (en) 1991-02-08 1991-12-16 Load-lifting device

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US (1) US5310304A (en)
EP (1) EP0524271B1 (en)
DE (1) DE59106277D1 (en)
WO (1) WO1992013792A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304679B (en) * 1995-08-25 1999-06-30 Chep Uk Ltd Handling apparatus and system
US6082080A (en) * 1998-10-15 2000-07-04 Abb Flexible Automation, Inc. Device for mechanically grasping and palletizing rectangular objects
FR2859197B1 (en) * 2003-09-02 2006-10-13 Commissariat Energie Atomique DEVICE FOR HANDLING FUT

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE290886C (en) *
DE174642C (en) *
US762759A (en) * 1904-02-16 1904-06-14 Wolfgang Reuter Magnetic grapple.
US1564655A (en) * 1924-06-23 1925-12-08 Bernhard W Westbo Lumber-loading device
US1833545A (en) * 1929-11-22 1931-11-24 Cleveland Crane Eng Pipe grab
US1957719A (en) * 1933-04-06 1934-05-08 Rotary Steel Company Lifting device
SU131480A1 (en) * 1960-02-29 1960-11-30 Л.А. Подольский Steel grip
FR1287442A (en) * 1961-01-30 1962-03-16 Fenwick Manutention Ste Indle Lifting device intended to work with a handling machine
DE1289640B (en) * 1966-02-08 1969-02-20 Wilhelm Scheidt Kg Maschinenfa Gripping and carrying device for sheets
US3606056A (en) * 1968-01-25 1971-09-20 Skagit Corp Straplift loading system
US3558178A (en) * 1968-12-12 1971-01-26 Glenn E Taylor Hydraulic rail lifter
CA1146993A (en) * 1980-12-08 1983-05-24 Davide Valania Device for handling steel bars and sections arranged in planar bundles
DE3112348A1 (en) * 1981-03-28 1982-10-07 Eisenbau Essen GmbH, 4300 Essen Magnetic spreader beam for semi-finished steel products and with safety stirrups
DE3710479A1 (en) * 1987-03-30 1988-10-13 Bosch Gmbh Robert LINEAR UNIT FOR IMPLEMENTING OBJECTS

Also Published As

Publication number Publication date
DE59106277D1 (en) 1995-09-21
US5310304A (en) 1994-05-10
WO1992013792A1 (en) 1992-08-20
EP0524271A1 (en) 1993-01-27

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