EP1382562B1 - Load measuring device - Google Patents
Load measuring device Download PDFInfo
- Publication number
- EP1382562B1 EP1382562B1 EP03016173A EP03016173A EP1382562B1 EP 1382562 B1 EP1382562 B1 EP 1382562B1 EP 03016173 A EP03016173 A EP 03016173A EP 03016173 A EP03016173 A EP 03016173A EP 1382562 B1 EP1382562 B1 EP 1382562B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crane mechanism
- working platform
- crane
- working
- cantilever
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
- B66F11/046—Working platforms suspended from booms of the telescoping type
Definitions
- the present invention relates to a load detection device for a work platform, to one on the work platform safely and accurately detect acting load. Especially The present invention relates to a Load detection device for aerial work platforms, z. B. hydraulic Aerial work platforms connected by a crane to a Trucks are attached.
- Work platforms especially those attached to trucks are known. In such work platforms is in operation ensure that a certain load is not exceeded becomes. This load can be z. By a user the platform and by material, which together with the user must be moved.
- the Working platform is usually movable via a jib crane connected to a chassis of the truck and can, for example under control of the operator in the work platform, be moved freely. Depending on a position the working platform or the working basket with respect to a Center of gravity of the truck, including the crane mechanism Certain loads must not be exceeded in order to a tilting of the truck or an overload of the crane mechanism to avoid. For these reasons, it is necessary the load acting on the platform at any time safe and accurate operation.
- a problem in the safe and accurate determination of the working platform / platform load is that it is safe and accurate even when the load does not work in the center of gravity of the work platform, but eccentric to the same, as is usually the case when the operator is on the work platform moved or if materials in edge areas of the work platform be turned off.
- GB 2 062 258 A describes a crane on the above Outrigger a work basket is attached.
- the boom is over a joint attached to the crane section.
- the basket is over Attached fasteners to the boom, in such a way that the work basket rests on a pressure plate, so that displayed on the display a load on the working basket can be.
- the present invention seeks to provide an improved crane mechanism with working platform and load sensing device, which is feasible without complex mechanical and design effort and at the same time ensures the required accuracy in the detection of the load.
- This object is achieved by a crane mechanism according to claim 1.
- the present invention provides a load sensing device for a working platform, wherein the load detection device a crane mechanism for moving the work platform includes.
- the crane mechanism is attachable to a base.
- a load cell is between the crane mechanism and the work platform arranged, and the crane mechanism and the work platforms are interconnected via the load cell this being preferably the only connection represents between the crane mechanism and the work platform.
- the load cell comprises a first strain gauges full bridge and a second strain gauge full bridge, in case of failure of the first bridge another Weighing ensures, wherein the load cell further preferably is designed to lateral moments and / or Torsionsmomente to eliminate.
- the advantage of the present invention is that a novel approach, which consists in the crane and the work basket exclusively over the Load cell to connect, the load cell for an eccentric Load introduction is designed, which mechanically constructed as a parallelogram. As a result, has the Load cell's ability to accurately match the weight of loads determine, even if the center of gravity of the load outside the Load cell is located.
- the device according to the invention comprises a crane 100, for example a hydraulically actuated crane of conventional design.
- This crane 100 comprises a plurality of stages, in the example shown in FIG. 1 three stages 100 1 , 100 2 and 100 3 are provided.
- One end of the third stage 100 3 of the crane 100 is provided with a boom 102 which is connected via a not shown in Fig. 1 joint 104 with the end of the third stage 100 3 , to ensure that a boom 102 attached to the work basket 108 can always be kept horizontal.
- the end of the cantilever 102 facing away from the hinge 104 comprises an end plate 106, to which the working basket 108 is fastened in the manner described in more detail below.
- a load cell 110 is arranged between the work basket 108 and the end plate 106.
- a first U-shaped angle profile 112 is provided, which can be fastened on one side of the weighing cell 110 by means of screws 114.
- a second U-shaped angle element 116 can be fastened on an opposite side of the weighing cell 110 by means of screws.
- the angle plate 112 is connectable to the end plate 106, and the angle plate 116 is connectable to a side surface of the work basket 108, so that via the load cell, a connection between the work basket 108 and the crane 100 can be produced.
- the load cell 110 is shown as an example the angle plates 112 and 116 are attached.
- the angle plates each comprise a first section 120 and a second portion 122.
- the angle plate 112 and 116 respectively is bolted to the load cell 110 as described above, using the openings 124.
- the example illustrated load cell 110 includes four U-shaped recesses 126 to 132, which extend through the load cell. Between the recesses 130 and 132 is an in FIG. 2B does not form a recess / recess to be recognized, FIG. in which a strain gauge is arranged. Between the recesses 126 and 128 is a further recess 134 formed in the alternatively or additionally a strain gauge is included.
- connection cable are electrical Lines for leading the detection signals to passed an evaluation device.
- the measuring resistors in the load cell are preferably interconnected in a bridge.
- the load cell is mechanically as a parallelogram designed, which does not feel like a load Deformed "bending bar", but one in Fig. 2B schematically subjected to deformation (S-deformation), whereby the possibility arises, a weight even then to determine exactly when the center of gravity of the load outside the load cell is located.
- S-deformation deformation
- Fig. 3A the arrangement shown in Fig. 1 is assembled in the State shown. As you can see, becomes the end plate 106 of the crane 100 at the angle plate 112 attached, and the basket 108 is at the angle plate 116 attached, with the attachment to the sections 122 (see FIG. 2A) of the angle plates takes place.
- the angle plates are attached via the screws 114 to the load cell.
- the load cell is in a direction transverse to one Longitudinal axis 102 'of the crane boom 102 is arranged.
- Fig. 3B shows the connection point between work basket 108 and crane 100 in an enlarged view.
- the load cell installed longitudinally, but can also be used in case of space problems be installed, in which case instead of in the figures shown U-shaped angle plates only L-shaped angle plates be used, the work basket or the End plate 106 then at the portions of the L-shaped Angle plates are attached, which are not the screws take up.
- Fig. 3C the arrangement shown in Fig. 1 is assembled in the State shown here, here, unlike in Fig. 3A, the load cell in a direction along the Longitudinal axis of the crane boom 102 is arranged. Further is in Fig. 3C attached to the basket 108 end plate 106 'to recognize. Between the two end plates 106 and 106 ', the load cell 110 is arranged.
- Fig. 4 shows a further embodiment of the present invention Invention, which essentially with reference to FIG. 1 and the Fig. 3 described embodiment corresponds. Same elements are here with the same reference numerals Mistake.
- the Load cell 110 installed here under the work basket 108, ie connected to a lower surface 108 '.
- the load cell 110 may be longitudinally (parallel) in the manner shown in FIG. arranged to the longitudinal axis 102 'of the crane jib 102 be.
- the load cell can also be transverse to the Be arranged longitudinal axis of the crane jib.
- the load cell is the only one Connection between work basket and crane here, so here made in a structurally simple way a connection can be at the same time a secure and accurate detection of the load acting on the platform 108 granted due to the load cell used.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Jib Cranes (AREA)
- Measurement Of Force In General (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Push-Button Switches (AREA)
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Abstract
Description
Die vorliegende Erfindung bezieht sich auf eine Lasterfassungseinrichtung für eine Arbeitsbühne, um eine auf die Arbeitsbühne wirkende Last sicher und genau zu erfassen. Insbesondere bezieht sich die vorliegende Erfindung auf eine Lasterfassungsvorrichtung für Hubarbeitsbühnen, z. B. hydraulische Hubarbeitsbühnen, die über einen Kran an einem LKW befestigt sind.The present invention relates to a load detection device for a work platform, to one on the work platform safely and accurately detect acting load. Especially The present invention relates to a Load detection device for aerial work platforms, z. B. hydraulic Aerial work platforms connected by a crane to a Trucks are attached.
Arbeitsbühnen, insbesondere solche, die an LKWs befestigt sind, sind bekannt. Bei solchen Hubarbeitsbühnen ist im Betrieb sicherzustellen, dass eine bestimmte Last nicht überschritten wird. Diese Last kann z. B. durch einen Benutzer der Arbeitsbühne sowie durch Material, welches zusammen mit dem Benutzer bewegt werden muss, hervorgerufen werden. Die Arbeitsbühne ist im Regelfall über einen Auslegerkran bewegbar mit einem Chassis des LKW verbunden und kann, beispielsweise unter Steuerung der Bedienperson in der Arbeitsbühne, frei bewegt werden. Abhängig von einer Position der Arbeitsbühne bzw. des Arbeitskorbes bezüglich eines Schwerpunkts des LKWs unter Einbeziehung des Kranmechanismus dürfen bestimmte Lasten nicht überschritten werden, um ein Kippen des LKWs oder eine Überbelastung des Kranmechanismus zu vermeiden. Aus diesen Gründen ist es erforderlich, die auf die Arbeitsbühne wirkende Last zu jedem Zeitpunkt des Betriebs sicher und genau zu bestimmen.Work platforms, especially those attached to trucks are known. In such work platforms is in operation ensure that a certain load is not exceeded becomes. This load can be z. By a user the platform and by material, which together with the user must be moved. The Working platform is usually movable via a jib crane connected to a chassis of the truck and can, for example under control of the operator in the work platform, be moved freely. Depending on a position the working platform or the working basket with respect to a Center of gravity of the truck, including the crane mechanism Certain loads must not be exceeded in order to a tilting of the truck or an overload of the crane mechanism to avoid. For these reasons, it is necessary the load acting on the platform at any time safe and accurate operation.
Ein Problem bei der sicheren und genauen Bestimmung der auf die Arbeitsbühne/Arbeitskorb wirkenden Last besteht darin, dass diese auch dann sicher und genau zu erfassen ist, wenn die Last nicht im Schwerpunkt der Arbeitsbühne wirkt, sondern exzentrisch zu demselben, wie dies im Regelfall auftreten wird, wenn sich die Bedienperson auf der Arbeitsbühne bewegt bzw. wenn Materialien in Randbereichen der Arbeitsbühne abgestellt werden.A problem in the safe and accurate determination of the working platform / platform load is that it is safe and accurate even when the load does not work in the center of gravity of the work platform, but eccentric to the same, as is usually the case when the operator is on the work platform moved or if materials in edge areas of the work platform be turned off.
Im Stand der Technik sind verschiedene Lösungen zu dieser Problematik bekannt. Zum einen wird vorgeschlagen, eine Wägezelle heranzuziehen, die mit einem mechanischen Parallelogramm verbunden ist, welches wiederum mit der Bühne verbunden ist. Ein anderer Ansatz besteht darin, die Arbeitsbühne auf einem speziellen Rahmen zu befestigen, wobei an den vier Ecken der Arbeitsbühne jeweils eine Wägezelle vorgesehen ist. Diese Ansätze ermöglichen zwar eine Erfassung der Last, sind jedoch mechanisch und bezüglich der Auswertung sehr aufwendig. In the prior art, various solutions to this Problem known. For one thing, it is proposed a load cell using a mechanical parallelogram connected, which in turn connected to the stage is. Another approach is the work platform to attach on a special frame, taking the four corners of the work platform each provided a load cell is. Although these approaches allow detection the load, however, are mechanical and in terms of evaluation very expensive.
Die GB 2 062 258 A beschreibt einen Kran an dem über einen Ausleger ein Arbeitskorb befestigt ist. Der Ausleger ist über ein Gelenk an dem Kranabschnitt befestigt. Der Korb ist über Befestigungselemente an dem Ausleger befestigt, und zwar derart, dass der Arbeitskorb auf einer Druckplatte ruht, so dass über die Anzeige eine Belastung des Arbeitskorbes angezeigt werden kann.GB 2 062 258 A describes a crane on the above Outrigger a work basket is attached. The boom is over a joint attached to the crane section. The basket is over Attached fasteners to the boom, in such a way that the work basket rests on a pressure plate, so that displayed on the display a load on the working basket can be.
Ausgehend von diesem Stand der Technik liegt der vorliegenden
Erfindung die Aufgabe zugrunde, einen verbesserten Kranmechanismus
mit Arbeitsbühne und Lasterfassungsvorrichtung zu
schaffen, welcher ohne aufwendigen mechanischen und konstruktiven
Aufwand realisierbar ist und gleichzeitig die
erforderliche Genauigkeit bei der Erfassung der Last
sicherstellt.
Diese Aufgabe wird durch einen Kranmechanismus gemäss Anspruch
1 gelöst. Based on this prior art, the present invention seeks to provide an improved crane mechanism with working platform and load sensing device, which is feasible without complex mechanical and design effort and at the same time ensures the required accuracy in the detection of the load.
This object is achieved by a crane mechanism according to claim 1.
Die vorliegende Erfindung schafft eine Lasterfassungsvorrichtung für eine Arbeitsbühne, wobei die Lasterfassungsvorrichtung einen Kranmechanismus zum Bewegen der Arbeitsbühne umfasst. Der Kranmechanismus ist an einer Basis befestigbar. Eine Wägezelle ist zwischen dem Kranmechanismus und der Arbeitsbühne angeordnet, und der Kranmechanismus und die Arbeitsbühne sind über die Wägezelle miteinander verbunden, wobei dies vorzugsweise die einzige Verbindung zwischen dem Kranmechanismus und der Arbeitsbühne darstellt.The present invention provides a load sensing device for a working platform, wherein the load detection device a crane mechanism for moving the work platform includes. The crane mechanism is attachable to a base. A load cell is between the crane mechanism and the work platform arranged, and the crane mechanism and the work platforms are interconnected via the load cell this being preferably the only connection represents between the crane mechanism and the work platform.
Vorzugsweise umfasst die Wägezelle eine erste Dehnungsmessstreifenvollbrücke und eine zweite Dehnungsmessstreifenvollbrücke, die bei Ausfall der ersten Brücke eine weitere Wiegung sicherstellt, wobei die Wägezelle ferner vorzugsweise ausgebildet ist, um Seitenmomente und/oder Torsionsmomente zu eliminieren.Preferably, the load cell comprises a first strain gauges full bridge and a second strain gauge full bridge, in case of failure of the first bridge another Weighing ensures, wherein the load cell further preferably is designed to lateral moments and / or Torsionsmomente to eliminate.
Der Vorteil der vorliegenden Erfindung besteht darin, dass hier ein neuartiger Ansatz verfolgt wird, der darin besteht, den Kran und den Arbeitskorb ausschließlich über die Wägezelle zu verbinden, wobei die Wägezelle für eine exzentrische Lasteinleitung ausgelegt ist, welche mechanisch als Parallelogramm konstruiert ist. Hierdurch besitzt die Wägezelle die Fähigkeit, exakt das Gewicht von Lasten zu bestimmen, auch wenn der Schwerpunkt der Last außerhalb der Wägezelle liegt.The advantage of the present invention is that a novel approach, which consists in the crane and the work basket exclusively over the Load cell to connect, the load cell for an eccentric Load introduction is designed, which mechanically constructed as a parallelogram. As a result, has the Load cell's ability to accurately match the weight of loads determine, even if the center of gravity of the load outside the Load cell is located.
Bevorzugte Weiterbildungen der vorliegenden Anmeldung sind in den Unteransprüchen definiert.Preferred developments of the present application are defined in the subclaims.
Anhand der beiliegenden Zeichnungen werden nachfolgend bevorzugte Ausführungsbeispiele der vorliegenden Erfindung näher erläutert. Es zeigen:
- Fig. 1
- ein erstes Ausführungsbeispiel der erfindungsgemäßen Anordnung im nicht-zusammengebauten Zustand.
- Fig. 2A
- eine vergrößerte Darstellung der Wägezelle aus Fig. 1,
- Fig. 2B
- schematisch die Verformung der in Fig. 2A dargestellten Wägezelle bei Beaufschlagung derselben mit einer Last,
- Fig. 3A
- die in Fig. 1 gezeigte Anordnung im zusammengebauten Zustand mit quer eingebauter Wägezelle,
- Fig. 3B
- eine vergrößerte Darstellung des Verbindungsabschnitts zwischen Kran und Arbeitsbühne,
- Fig. 3C
- die in Fig. 1 gezeigte Anordnung im zusammengebauten Zustand mit längs eingebauter Wägezelle, und
- Fig. 4
- ein weiteres Ausführungsbeispiel der vorliegenden Erfindung mit unter dem Arbeitskorb eingebauter Wägezelle.
- Fig. 1
- a first embodiment of the inventive arrangement in the unassembled state.
- Fig. 2A
- an enlarged view of the load cell of Fig. 1,
- Fig. 2B
- 2 schematically shows the deformation of the load cell shown in FIG. 2A when subjected to a load,
- Fig. 3A
- the arrangement shown in Figure 1 in the assembled state with transversely mounted load cell,
- Fig. 3B
- an enlarged view of the connecting section between crane and working platform,
- Fig. 3C
- the arrangement shown in Figure 1 in the assembled state with longitudinally mounted load cell, and
- Fig. 4
- a further embodiment of the present invention with built under the work basket load cell.
In Fig. 1 ist ein erstes Ausführungsbeispiel der erfindungsgemäßen
Vorrichtung näher dargestellt. Die erfindungsgemäße
Vorrichtung umfasst einen Kran 100, beispielsweise
einen hydraulisch betätigbaren Kran herkömmlicher Bauart.
Dieser Kran 100 umfasst eine Mehrzahl von Stufen, bei dem
in Fig. 1 gezeigten Beispiel sind drei Stufen 1001, 1002
und 1003 vorgesehen. Ein Ende der dritten Stufe 1003 des
Krans 100 ist mit einem Ausleger 102 versehen, der über ein
in Fig. 1 nicht näher dargestelltes Gelenk 104 mit dem Ende
der dritten Stufe 1003 verbunden ist, um sicherzustellen,
dass ein am Ausleger 102 befestigter Arbeitskorb 108 stets
in der Horizontalen gehalten werden kann. Das dem Gelenk
104 abgewandte Ende des Auslegers 102 umfasst eine Abschlussplatte
106, an der auf die noch nachfolgend näher
beschriebene Art und Weise der Arbeitskorb 108 befestigt
ist. Zwischen dem Arbeitskorb 108 und der Abschlussplatte
106 ist eine Wägezelle 110 angeordnet. Ein erstes U-förmiges
Winkelprofil 112 ist vorgesehen, welches an einer
Seite der Wägezelle 110 mittels Schrauben 114 befestigbar
ist. Ein zweites U-förmiges Winkelelement 116 ist an einer
gegenüberliegenden Seite der Wägezelle 110 mittels Schrauben
befestigbar. Das Winkelblech 112 ist mit der Abschlussplatte
106 verbindbar, und das Winkelblech 116 ist mit einer
Seitenfläche des Arbeitskorbs 108 verbindbar, so dass
über die Wägezelle eine Verbindung zwischen dem Arbeitskorb
108 und dem Kran 100 herstellbar ist.In Fig. 1, a first embodiment of the device according to the invention is shown in detail. The device according to the invention comprises a
In Fig. 2A ist beispielhaft die Wägezelle 110 gezeigt, an
der die Winkelbleche 112 und 116 befestigt sind. Die Winkelbleche
umfassen jeweils einen ersten Abschnitt 120 und
einen zweiten Abschnitt 122. Das Winkelblech 112 bzw. 116
wird mit der Wägezelle 110, wie oben beschrieben, verschraubt,
unter Verwendung der Öffnungen 124. Die beispielhaft
dargestellte Wägezelle 110 umfasst vier U-förmige Ausnehmungen
126 bis 132, die sich durch die Wägezelle erstrecken.
Zwischen den Ausnehmungen 130 und 132 ist eine in
Fig. 2B nicht zu erkennende Ausnehmung/Vertiefung gebildet,
in der ein Dehnungsmessstreifen angeordnet ist. Zwischen
den Ausnehmungen 126 und 128 ist eine weitere Ausnehmung
134 gebildet, in der alternativ oder zusätzlich ein Dehnungsmessstreifen
aufgenommen ist.In Fig. 2A, the
Über ein nicht näher gezeigtes Anschlusskabel werden elektrische Leitungen zum Herausführen der Erfassungssignale an eine Auswertungseinrichtung geleitet. Die Messwiderstände in der Wägezelle sind vorzugsweise in einer Brücke verschaltet. Die Wägezelle ist mechanisch als Parallelogramm konstruiert, welches sich bei einer Belastung nicht wie ein "Biegestab" verformt, sondern einer in Fig. 2B schematisch gezeigten Verformung (S-Verformung) unterworfen ist, wodurch sich die Möglichkeit ergibt, ein Gewicht auch dann genau zu bestimmen, wenn sich der Schwerpunkt der Last außerhalb der Wägezelle befindet. Die Wägezelle eliminiert Seitenmomente und/oder Torsionsmomente.About a not shown in detail connection cable are electrical Lines for leading the detection signals to passed an evaluation device. The measuring resistors in the load cell are preferably interconnected in a bridge. The load cell is mechanically as a parallelogram designed, which does not feel like a load Deformed "bending bar", but one in Fig. 2B schematically subjected to deformation (S-deformation), whereby the possibility arises, a weight even then to determine exactly when the center of gravity of the load outside the load cell is located. The load cell eliminated Side moments and / or torsional moments.
In Fig. 3A ist die in Fig. 1 gezeigte Anordnung in dem zusammengebauten
Zustand dargestellt. Wie zu erkennen ist,
wird die Abschlussplatte 106 des Krans 100 an dem Winkelblech
112 befestigt, und der Korb 108 wird an dem Winkelblech
116 befestigt, wobei die Befestigung an den Abschnitten
122 (siehe Fig. 2A) der Winkelbleche erfolgt. Die Winkelbleche
sind über die Schrauben 114 an der Wägezelle befestigt.
Die Wägezelle ist in einer Richtung quer zu einer
Längsachse 102' des Kranauslegers 102 angeordnet.In Fig. 3A, the arrangement shown in Fig. 1 is assembled in the
State shown. As you can see,
becomes the
Fig. 3B zeigt die Verbindungsstelle zwischen Arbeitskorb
108 und Kran 100 in vergrößerter Darstellung. Bei der in
Fig. 3 dargestellten Befestigungsart ist die Wägezelle
längs eingebaut, kann jedoch auch bei Platzproblemen quer
eingebaut werden, wobei dann anstelle der in den Figuren
gezeigten U-förmigen Winkelbleche lediglich L-förmige Winkelbleche
verwendet werden, wobei der Arbeitskorb bzw. die
Abschlussplatte 106 dann an den Abschnitten der L-förmigen
Winkelbleche befestigt werden, welche nicht die Schrauben
aufnehmen.Fig. 3B shows the connection point between
In Fig. 3C ist die in Fig. 1 gezeigte Anordnung in dem zusammengebauten
Zustand dargestellt, wobei hier, anders als
in Fig. 3A, die Wägezelle in einer Richtung längs zu der
Längsachse des Kranauslegers 102 angeordnet ist. Ferner ist
in Fig. 3C die an dem Korb 108 befestigte Abschlussplatte
106' zu erkennen. Zwischen den zwei Abschlussplatten 106
und 106' ist die Wägezelle 110 angeordnet.In Fig. 3C, the arrangement shown in Fig. 1 is assembled in the
State shown here, here, unlike
in Fig. 3A, the load cell in a direction along the
Longitudinal axis of the
Fig. 4 zeigt ein weiteres Ausführungsbeispiel der vorliegenden
Erfindung, das im wesentlichen dem anhand der Fig. 1
und der Fig. 3 beschriebenen Ausführungsbeispiel entspricht.
Gleiche Elemente sind hier mit gleichen Bezugszeichen
versehen. Anders als in Fig. 1 und in Fig. 3 ist die
Wägezelle 110 hier unter dem Arbeitskorb 108 eingebaut, also
mit einer unteren Oberfläche 108' verbunden. Die Wägezelle
110 kann auf die in Fig. 4 gezeigte Art längs (parallel)
zu der Längsachse 102' des Kranauslegers 102 angeordnet
sein. Alternativ kann die Wägezelle auch quer zu der
Längsachse des Kranauslegers angeordnet sein.Fig. 4 shows a further embodiment of the present invention
Invention, which essentially with reference to FIG. 1
and the Fig. 3 described embodiment corresponds.
Same elements are here with the same reference numerals
Mistake. Unlike in Fig. 1 and in Fig. 3 is the
Anders als bei den bekannten Lösungen, wie sie im Stand der
Technik beschrieben sind, stellt die Wägezelle die einzige
Verbindung zwischen Arbeitskorb und Kran her, so dass hier
auf konstruktiv einfache Art und Weise eine Verbindung hergestellt
werden kann, wobei gleichzeitig eine sichere und
genaue Erfassung der auf die Arbeitsbühne 108 wirkende Last
gewährt ist, aufgrund der verwendeten Wägezelle.Unlike the known solutions, as in the state of
Technique described, the load cell is the only one
Connection between work basket and crane here, so here
made in a structurally simple way a connection
can be at the same time a secure and
accurate detection of the load acting on the
Claims (9)
- A crane mechanism and working platform with a load detection apparatus, comprising:characterized in thata crane mechanism (100, 102, 104) for moving the working platform (108), wherein the crane mechanism (100) is mountable to a base and comprises a cantilever (102), which is connected to a stage of the crane mechanism (100) via a joint (104); anda weighing cell (110) disposed between the cantilever (102) and the working platform (108) and mounted to the cantilever (102)with a first end;
the working platform (108) is mounted to the cantilever (102) via the weighing cell (110),
the weighing cell (110) is mounted to the working platform (108) with a second end, and
the weighing cell (110) is the only connection between the cantilever (102) and the working platform (108). - The crane mechanism and working platform of claim 1, wherein the weighing cell (110) is disposed between a lateral face of the working platform (108) and the cantilever (102).
- The crane mechanism and working platform of claim 1, wherein the weighing cell (110) is disposed between a bottom surface (108') of the working platform (108) and the cantilever (102).
- The crane mechanism and working platform of claim 2 or 3, wherein the weighing cell (110) is disposed in parallel to a longitudinal axis (102') of the cantilever (102).
- The crane mechanism and operating stage of claim 2 or 3, wherein the weighing cell (110) is disposed transversally to a longitudinal axis (102') of the cantilever (102).
- The crane mechanism and working stage of one of claims 1 to 5, wherein the weighing cell (110) comprises a first strain gauge strip full bridge and a second strain gauge strip full bridge ensuring a further weighing during failure of the first bridge.
- The crane mechanism and working stage of one of claims 1 to 6, wherein the weighing cell (110) is formed such that side moments and/or torsion moments are compensated.
- The crane mechanism and working stage of one of claims 1 to 7, wherein the working stage is a working basket.
- A vehicle with a crane mechanism and a working stage of one of claims 1 to 8, wherein the crane mechanism (100) is mounted to a vehicle chassis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20210958U DE20210958U1 (en) | 2002-07-19 | 2002-07-19 | Load detecting device |
| DE20210958U | 2002-07-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1382562A1 EP1382562A1 (en) | 2004-01-21 |
| EP1382562B1 true EP1382562B1 (en) | 2005-05-11 |
| EP1382562B2 EP1382562B2 (en) | 2010-08-04 |
Family
ID=7973207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03016173A Expired - Lifetime EP1382562B2 (en) | 2002-07-19 | 2003-07-16 | Load measuring device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1382562B2 (en) |
| AT (1) | ATE295332T1 (en) |
| DE (2) | DE20210958U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020084561A1 (en) | 2018-10-26 | 2020-04-30 | Haulotte Group | Weighing system for a working platform of an aerial lift having a mast |
| FR3087761A1 (en) | 2018-10-26 | 2020-05-01 | Haulotte Group | WEIGHING SYSTEM FOR WORK PLATFORM OF A MAT LIFT PLATFORM |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005022607A1 (en) * | 2005-05-11 | 2006-11-23 | EBM Brosa Messgeräte GmbH & Co. KG | Device for fastening of load supporting device on jib of lifting equipment has connecting component is fastened between the first and second component with supporting action and with clearance in longitudinal direction |
| CN101780934A (en) * | 2010-02-26 | 2010-07-21 | 南京晨光水山电液特装有限公司 | High-altitude operation slot load measuring device |
| FR3000200B1 (en) | 2012-12-24 | 2016-04-15 | Haulotte Group | WEIGHING MECHANISM FOR A NACELLE AND LIFT BOOM COMPRISING SUCH A WEIGHTING MECHANISM |
| EP3199486B1 (en) | 2016-01-28 | 2018-06-20 | MOBA - Mobile Automation AG | Crane mechanism and work platform with a load measuring device and an integrated inclination sensor |
| EP3205992B1 (en) | 2016-02-11 | 2019-06-19 | MOBA - Mobile Automation AG | Electrical circuit, weighing cell, load detection device and vehicle with a load detection device |
| FR3147628A1 (en) | 2023-04-04 | 2024-10-11 | Haulotte Group | method and device for determining load for lifting platform work platform |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4168934A (en) | 1975-12-29 | 1979-09-25 | Allis-Chalmers Corporation | Lift truck overload protective circuit having override feature |
| US4398860A (en) | 1976-03-11 | 1983-08-16 | Allis-Chalmers Corporation | Fork lift truck having means to test overload protective system |
| GB2062258B (en) * | 1979-11-01 | 1983-11-16 | Simon Eng Dudley Ltd | Safe load indicator |
| AU558720B2 (en) * | 1982-09-29 | 1987-02-05 | James Industries Ltd. | Hoist with weighing device |
| DE3608628A1 (en) † | 1986-03-14 | 1987-09-17 | Pietzsch Ludwig Gmbh & Co | DEVICE FOR MONITORING THE OPERATING FORCES ON A WORK BASKET |
| FR2717899B1 (en) * | 1994-03-24 | 1996-08-02 | Claude Allemane | Overload control device for nacelles or lifting platforms. |
| JP2875482B2 (en) * | 1994-09-30 | 1999-03-31 | 新明和工業株式会社 | Aerial work vehicle |
| JP3078477B2 (en) * | 1995-07-28 | 2000-08-21 | 株式会社アイチコーポレーション | Workbench angle adjustment device |
| JPH10194698A (en) * | 1997-01-07 | 1998-07-28 | Nagano Kogyo Kk | Load detector for traveling type construction machine |
| US20040085184A1 (en) | 2000-08-30 | 2004-05-06 | Volker Sigmund | Redundant safety system of a vehicle |
-
2002
- 2002-07-19 DE DE20210958U patent/DE20210958U1/en not_active Expired - Lifetime
-
2003
- 2003-07-16 DE DE50300529T patent/DE50300529D1/en not_active Expired - Lifetime
- 2003-07-16 AT AT03016173T patent/ATE295332T1/en not_active IP Right Cessation
- 2003-07-16 EP EP03016173A patent/EP1382562B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020084561A1 (en) | 2018-10-26 | 2020-04-30 | Haulotte Group | Weighing system for a working platform of an aerial lift having a mast |
| FR3087761A1 (en) | 2018-10-26 | 2020-05-01 | Haulotte Group | WEIGHING SYSTEM FOR WORK PLATFORM OF A MAT LIFT PLATFORM |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1382562A1 (en) | 2004-01-21 |
| DE50300529D1 (en) | 2005-06-16 |
| EP1382562B2 (en) | 2010-08-04 |
| DE20210958U1 (en) | 2003-01-09 |
| ATE295332T1 (en) | 2005-05-15 |
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