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EP4058394B1 - Lifting apparatus for an assembly of a motor vehicle, and method for fixing at least one carrier arm of a lifting apparatus - Google Patents

Lifting apparatus for an assembly of a motor vehicle, and method for fixing at least one carrier arm of a lifting apparatus Download PDF

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Publication number
EP4058394B1
EP4058394B1 EP20780158.0A EP20780158A EP4058394B1 EP 4058394 B1 EP4058394 B1 EP 4058394B1 EP 20780158 A EP20780158 A EP 20780158A EP 4058394 B1 EP4058394 B1 EP 4058394B1
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EP
European Patent Office
Prior art keywords
spring
lifting apparatus
carrying arm
central disc
support arm
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.)
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Application number
EP20780158.0A
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German (de)
French (fr)
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EP4058394A1 (en
Inventor
Josef Hiller
Manfred Stellwagen
Steffen Huemmer
Aleksandar BUCHKOVSKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP4058394A1 publication Critical patent/EP4058394A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/26—Lifting frames, e.g. for lifting vehicles; Platform lifts for selective lifting of parts of vehicles
    • 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 lifting device for a component of a motor vehicle with the features of the preamble of claim 1. Furthermore, the invention relates to a method for fixing at least one support arm of a lifting device with the features of the independent patent claim 9.
  • Lifting devices are mainly used in motor vehicle workshops to assemble or disassemble heavy components, such as drive devices.
  • the lifting devices usually have a load-bearing unit to hold the component, as well as a support unit that can be arranged on a lifting unit.
  • the load-bearing unit is positioned relative to the component of the motor vehicle by moving or adjusting the support arms.
  • a lifting device for a component of a motor vehicle is already known.
  • the lifting device has a load-bearing unit with at least one support arm.
  • a coupling unit for detachably connecting the support arm to the component of a motor vehicle is arranged on the support arm.
  • a lifting device for a motor vehicle assembly has a load-bearing unit with at least one support arm that can be pivoted about a longitudinal axis of the load-bearing unit, as well as a coupling unit arranged on the support arm for detachably connecting the support arm to the motor vehicle assembly.
  • a blocking unit is shown, which makes it possible to secure the set position of the support arm, ie the position of the support arm pivoted relative to the load-bearing unit.
  • the blocking unit has a brake body which can be adjusted by means of an actuating element, in particular a tensioning lever, in the direction of a housing base body of the load-bearing unit.
  • the lifting device according to the invention makes it possible to implement any angle setting of the support arms.
  • the lever clamp has at least two spring-loaded pins on the side facing the central disk, which can disappear into a recess against a spring force. In this way, the fixing is achieved by a frictional connection that is several times the spring force and thus with a higher force than if only two smooth or roughened surfaces were pressed against each other by the lever clamp.
  • the central disk has holes which have an inner diameter that corresponds to the outer diameter of the spring-loaded pins, so that a positive connection can take place between the spring-loaded pins and the holes.
  • the positive connection between the at least one pin and the holes leads to a further strengthening of the fixation.
  • the arrangement of the holes on the outer edge of the central disc is advantageous because it allows for a smaller and more cost-effective design of the lever clamp.
  • the holes are arranged as closely as possible and at an even distance along the outer edge of the central disk, as this increases the possibility of a simultaneous force and form fit. If an angular position has been selected in which only a force fit is possible and an extremely high axial force acts on the support arm, only a small displacement of the support arm in the axial direction can occur. Due to the axial displacement, a spring-loaded pin and a hole can form a form fit after a displacement of just a small angular degree, so that further displacement is blocked.
  • a lever clamp which can be fixed to the central disk using a threaded screw, is advantageous.
  • the lifting device In order to ensure that the lifting device can be adapted as flexibly and easily as possible to different components of a vehicle, it has a coupling unit or a receiving unit which is arranged longitudinally displaceably on the support arm and is designed for the detachable connection of the support arm to the component of a motor vehicle.
  • the at least one support arm can be fixed by means of a force connection, in which at least one spring-loaded pin, which is located on the lever clamp, is pressed against the central disk. Due to the possibility that fixing can be achieved by means of a force connection alone, any angular position of the at least one support arm can be set. This is a great advantage, as it allows the lifting device to be adjusted flexibly. Due to the force that the spring-loaded pins exert on the surface of the central disk, the support arm can also be securely fixed in positions in which there is no form fit.
  • a particular advantage is that, depending on the angular position when fixing at least one support arm, at least one spring-loaded pin and a hole in the central disk form a positive connection by a spring-loaded pin engaging in a hole.
  • the positive connection which acts in addition to the frictional connection, improves the fixation.
  • Figure 1 shows a perspective view of a lifting device 1 with a load-bearing unit 2 and a support unit 4, which can be attached to a lifting unit, for example.
  • the load-bearing unit 2 is used for connection to a component of a motor vehicle and for this reason has at least one support arm 3.
  • the support arms 3 can have at least one coupling unit 9 or at least one receiving unit 9, which are arranged longitudinally displaceably on the support arm 3 and are designed for the detachable connection of the support arm 3 to the assembly of the motor vehicle.
  • the load-bearing unit 2 also has a central disk 11, wherein the central disk 11 is arranged rotationally symmetrically about the central axis 10.
  • the support arms 3 are connected to a lever clamp 30 so that an edge 12 of the central disk 11 is located between the lower edge of the central disk 11 and the lever clamp 30. With the help of the lever clamp 30, the support arm 3 can be fixed to the central disk 11 so that the support arm 3 can no longer be moved, or released again so that the support arm can rotate about the central axis 10.
  • Figure 2 shows an enlarged section of a central disk 11 with a support arm 3, which shows the fixation of the support arm 3 in the closed state.
  • the lever clamp 30 is attached to the end of the support arm 3 facing the central disk 11.
  • An edge 12 of the central disk 11, which is designed as a guide edge, is enclosed by both the support arm 3 and the lever clamp 30.
  • the support arm 3 is fixed by tightening the screw 13, which is located in a thread.
  • the fixation of the support arm 3 is loosened by opening the screw 13, which is located in the thread.
  • the support arm 3 is further connected to the central disk 11 via a bracket 14, which is rotatable about a holder, so that the support arm 3 is connected to the central disk 11 even when the fixation is open.
  • Figure 3 shows an enlarged section of the central disk 11 with a support arm, which shows the fixation of the support arm in the open state.
  • the lever clamp 30 has at least two spring-loaded pins 32 on the side facing the central disk 11.
  • the spring-loaded pins 32 are spring-loaded and can be completely sunk into a recess in the lever clamp 30 against a spring force.
  • the recess has a diameter that corresponds to the outer diameter of the spring-loaded pins 32.
  • the spring-loaded pins 32 can have a circular cross-section and a rounded tip at the top.
  • the central disk 11 can have holes 33.
  • a corresponding central disk 11 with holes 33 is shown.
  • the holes 33 are arranged on the underside of the central disk 11, i.e. the side facing the support unit 4.
  • the holes 33 are arranged in such a way that they can form a positive connection with the spring-loaded pins 32 when the support arm 3 assumes an angular position so that the hole 33 and the spring-loaded pin 32 are opposite each other.
  • the holes 33 have an inner diameter that corresponds to the outer diameter of the spring-loaded pins 32.
  • the holes 33 are arranged at the same distance from the central axis 10 as the spring-loaded pins 32.
  • the holes 33 are usually arranged on the outer edge of the central disk 11 so that the spring-loaded pins 32 can form a positive connection with the holes 33.
  • the holes 33 are arranged at an equal distance along the outer edge of the central disk 11.
  • seventy-two holes 33 are evenly distributed on the central disk 11.
  • the center of each hole 33 has an angle of 5° to the next hole 33 starting from the central axis 10.
  • Each hole 33 has a diameter of 5 mm and a depth of 4.5 mm.
  • Six spring-loaded pins 32 are arranged on the lever clamp 30, the center of a circular pin 32 starting from the central axis 10 having an angle of 5.2° to the center of the next pin 32.
  • the fixation of at least one support arm 3 to the central disk 11 can be carried out in two ways depending on the selected angular position.
  • the support arm 3 is fixed in place using a pure force connection (the angle position is selected so that the holes 33 and the pins 32 are not opposite each other) by pressing the six spring-loaded pins 32 against the wall of the central disk 11. Since each of the spring-loaded pins 32 is loaded with a spring force, a force connection occurs between the support arm 3 and the central disk 11, which corresponds to at least six times the spring force. In addition to the force from the springs, a force connection also occurs due to the surface friction between the other contact points between the support arm 3 with the lever clamp 30 and the central disk 11.
  • the support arm 3 is fixed by a positive connection and a frictional connection.
  • the remaining five spring-loaded pins 32 are pressed against the wall of the central disk 11. Since each of the spring-loaded pins 32 is loaded with a spring force, a frictional connection occurs between the support arm 3 and the central disk 11, which corresponds to at least five times the spring force.
  • a frictional connection also occurs due to the surface friction between the other contact points between the support arm 3 with the lever clamp 30 and the central disk 11.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Jigs For Machine Tools (AREA)
  • Vehicle Body Suspensions (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Description

Die Erfindung betrifft eine Hebevorrichtung für eine Baugruppe eines Kraftfahrzeugs mit den Merkmalen des Oberbegriffes des Anspruches 1. Des Weiteren betrifft die Erfindung ein Verfahren zur Fixierung mindestens eines Tragarmes einer Hebevorrichtung mit den Merkmalen des unabhängigen Patentanspruches 9.The invention relates to a lifting device for a component of a motor vehicle with the features of the preamble of claim 1. Furthermore, the invention relates to a method for fixing at least one support arm of a lifting device with the features of the independent patent claim 9.

Stand der TechnikState of the art

Hebevorrichtungen werden zum großen Teil in Werkstätten für Kraftfahrzeuge genutzt, um schwere Baugruppen, wie beispielsweise Antriebsvorrichtungen, zu montieren oder demontieren. Die Hebevorrichtungen weisen meist eine Lastaufnahmeeinheit zur Aufnahme der Baugruppe, sowie eine an einer Hubeinheit anordbaren Stützeinheit auf. Die Lastaufnahmeeinheit wird dabei durch eine Bewegung bzw. Anpassung der Tragarme gegenüber der Baugruppe des Kraftfahrzeuges positioniert.Lifting devices are mainly used in motor vehicle workshops to assemble or disassemble heavy components, such as drive devices. The lifting devices usually have a load-bearing unit to hold the component, as well as a support unit that can be arranged on a lifting unit. The load-bearing unit is positioned relative to the component of the motor vehicle by moving or adjusting the support arms.

Aus der DE 10 2014 117 703 A1 ist bereits eine Hebevorrichtung für eine Baugruppe eines Kraftfahrzeuges bekannt. Die Hebevorrichtung weist eine Lastaufnahmeeinheit mit mindestens einem Tragarm auf. An dem Tragarm ist eine Kopplungseinheit zur lösbaren Verbindung des Tragarms mit der Baugruppe eines Kraftfahrzeuges angeordnet.From the DE 10 2014 117 703 A1 A lifting device for a component of a motor vehicle is already known. The lifting device has a load-bearing unit with at least one support arm. A coupling unit for detachably connecting the support arm to the component of a motor vehicle is arranged on the support arm.

Auch in der EP 3 336 633 A1 ist eine Hebevorrichtung für eine Kraftfahrzeugbaugruppe gezeigt. Die Kraftfahrzeugbaugruppe weist eine Lastaufnahmeeinheit auf, mit mindesten einem um eine Längsachse der Lastaufnahmeeinheit schwenkbaren Tragarm, sowie einer an dem Tragarm angeordneten Kopplungseinheit zur lösbaren Verbindung des Tragarms mit der Kraftfahrzeugbaugruppe. Des Weiteren ist eine Blockiereinheit gezeigt, welche es ermöglicht die eingestellte Position des Tragarms, d.h. die gegenüber der Lastaufnahmeeinheit verschwenkte Position des Tragarms zu sichern. Die Blockiereinheit weist einen Bremskörper auf, welcher mittels eines Betätigungselementes, insbesondere eines Spannhebels, in Richtung auf einen Gehäusegrundkörper der Lastaufnahmeeinheit verstellbar ist.Also in the EP 3 336 633 A1 a lifting device for a motor vehicle assembly is shown. The motor vehicle assembly has a load-bearing unit with at least one support arm that can be pivoted about a longitudinal axis of the load-bearing unit, as well as a coupling unit arranged on the support arm for detachably connecting the support arm to the motor vehicle assembly. Furthermore, a blocking unit is shown, which makes it possible to secure the set position of the support arm, ie the position of the support arm pivoted relative to the load-bearing unit. The blocking unit has a brake body which can be adjusted by means of an actuating element, in particular a tensioning lever, in the direction of a housing base body of the load-bearing unit.

Offenbarung der Erfindungdisclosure of the invention

Es ist eine Aufgabe der Erfindung eine Hebevorrichtung für eine Baugruppe eines Kraftfahrzeugs, sowie Verfahren zur Fixierung mindestens eines Tragarmes einer Hebevorrichtung bereitzustellen, welche eine besonders einfache, sichere und effiziente Art der Fixierung des Tragarmes ermöglicht. Die erfindungsgemäße Hebevorrichtung ermöglicht es jede Winkeleinstellung der Tragarme zu realisieren.It is an object of the invention to provide a lifting device for a component of a motor vehicle, as well as a method for fixing at least one support arm of a lifting device, which enables a particularly simple, safe and efficient way of fixing the support arm. The lifting device according to the invention makes it possible to implement any angle setting of the support arms.

Es ist von Vorteil, dass die Hebelklemme auf der der Zentralscheibe zugewandten Seite mindestens zwei angefederte Stifte aufweist, welche entgegen einer Federkraft in einer Vertiefung verschwinden können. Auf diese Weise erfolgt die Fixierung durch einen Kraftschluss der einem mehrfachen der Federkraft erfolgt und damit mit einer höheren Kraft, als wenn nur zwei glatte oder angeraute Oberflächen durch die Hebelklemme gegeneinander gepresst werden würden.It is advantageous that the lever clamp has at least two spring-loaded pins on the side facing the central disk, which can disappear into a recess against a spring force. In this way, the fixing is achieved by a frictional connection that is several times the spring force and thus with a higher force than if only two smooth or roughened surfaces were pressed against each other by the lever clamp.

Ein weiterer Vorteil wird dadurch erzielt, dass die Zentralscheibe Bohrungen aufweist, welche einen Innendurchmesser haben, der dem Außendurchmesser der angefederten Stifte entspricht, so dass zwischen angefederten Stiften und Bohrungen ein Fomschluss stattfinden kann. Der Formschluss zwischen dem mindestens einen Stift und der Bohrungen führt zu einer weiteren Stärkung der Fixierung.A further advantage is achieved by the fact that the central disk has holes which have an inner diameter that corresponds to the outer diameter of the spring-loaded pins, so that a positive connection can take place between the spring-loaded pins and the holes. The positive connection between the at least one pin and the holes leads to a further strengthening of the fixation.

Die Anordnung der Bohrungen am äußeren Rand der Zentralscheibe ist von Vorteil, da dies eine kleinere und kostengünstigere Ausführung der Hebelklemme ermöglicht.The arrangement of the holes on the outer edge of the central disc is advantageous because it allows for a smaller and more cost-effective design of the lever clamp.

Es ist von Vorteil, wenn die Bohrungen möglichst eng und im gleichmäßigen Abstand entlang des äußeren Randes der Zentralscheibe angeordnet sind, da auf diese Weise die Möglichkeit eines gleichzeitigen Kraft- und Formschlusses erhöht wird. Wurde eine Winkellage gewählt, bei der nur ein Kraftschluss möglich ist und wirkt eine extrem hohe axiale Kraft auf den Tragarme, so kann nur eine geringe Verschiebung des Tragarmes in die axiale Richtung erfolgen. Aufgrund der axialen Verschiebung kann bereits nach einer Verschiebung um einen kleinen Winkelgrad ein angefederter Stift und eine Bohrung einen Formschluss eingehen, so dass die weitere Verschiebung blockiert wird.It is advantageous if the holes are arranged as closely as possible and at an even distance along the outer edge of the central disk, as this increases the possibility of a simultaneous force and form fit. If an angular position has been selected in which only a force fit is possible and an extremely high axial force acts on the support arm, only a small displacement of the support arm in the axial direction can occur. Due to the axial displacement, a spring-loaded pin and a hole can form a form fit after a displacement of just a small angular degree, so that further displacement is blocked.

Aufgrund der einfachen und kostengünstigen Konstruktion ist eine Hebelklemme, welche durch eine Schraube mit Gewinde an der Zentralschreibe fixierbar ist von Vorteil.Due to the simple and cost-effective construction, a lever clamp, which can be fixed to the central disk using a threaded screw, is advantageous.

Damit die Hebevorrichtung sich möglichst flexibel und einfach an unterschiedliche Baugruppen eines Fahrzeuges anpassen lässt, weist sie eine Kopplungseinheit oder eine Aufnahmeeinheit auf, welche an dem Tragarm längsverschieblich angeordnet ist und zur lösbaren Verbindung des Tragarms mit der Baugruppe eines Kraftfahrzeugs ausgebildet ist.In order to ensure that the lifting device can be adapted as flexibly and easily as possible to different components of a vehicle, it has a coupling unit or a receiving unit which is arranged longitudinally displaceably on the support arm and is designed for the detachable connection of the support arm to the component of a motor vehicle.

Es ist von Vorteil, wenn die Fixierung des mindestens einen Tragarmes durch einen Kraftschluss erfolgen kann, bei dem mindestens ein angefederter Stift, welcher sich an der Hebelklemme befindet, gegen die Zentralscheibe gepresst wird. Aufgrund der Möglichkeit, dass eine Fixierung alleine durch einen Kraftschluss erfolgen kann, ist die Einstellung jeder beliebigen Winkellage des mindestens einen Tragarmes möglich. Dies ist ein großer Vorteil, da sich die Hebevorrichtung dadurch flexibel einstellen lässt. Aufgrund der Kraft, die die angefederten Stifte auf die Oberfläche der Zentralscheibe ausüben, ist auch in Positionen, in denen kein Formschluss erfolgt eine sichere Fixierung des Tragarmes möglich.It is advantageous if the at least one support arm can be fixed by means of a force connection, in which at least one spring-loaded pin, which is located on the lever clamp, is pressed against the central disk. Due to the possibility that fixing can be achieved by means of a force connection alone, any angular position of the at least one support arm can be set. This is a great advantage, as it allows the lifting device to be adjusted flexibly. Due to the force that the spring-loaded pins exert on the surface of the central disk, the support arm can also be securely fixed in positions in which there is no form fit.

Ein besonderer Vorteil zeigt sich darin, dass abhängig von der Winkellage bei der Fixierung des mindestens einen Tragarmes zusätzlich mindestens ein angefederter Stift und eine Bohrung der Zentralscheibe einen Formschluss eingehen, indem ein angefederter Stift in eine Bohrung eingreift. Durch den Formschluss, welcher zusätzlich zum Kraftschluss wirkt, wird die Fixierung verbessert.A particular advantage is that, depending on the angular position when fixing at least one support arm, at least one spring-loaded pin and a hole in the central disk form a positive connection by a spring-loaded pin engaging in a hole. The positive connection, which acts in addition to the frictional connection, improves the fixation.

Ausführungsbeispieleimplementation examples

Bevorzugte Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.Preferred embodiments of the invention are shown in the drawing and explained in more detail in the following description.

Es zeigen:

  • Figur 1 eine perspektivische Ansicht einer Hebevorrichtung mit einer Lastaufnahmeeinheit mit vier Tragarmen,
  • Figur 2 einen vergrößerten Ausschnitt einer Zentralscheibe mit einem Tragarm, welcher die Fixierung des Tragarmes im geschlossenen Zustand zeigt;
  • Figur 3 einen vergrößerten Ausschnitt einer Zentralscheibe mit einem Tragarm, welcher die Fixierung des Tragarmes im geöffneten Zustand zeigt und
  • Figur 4 eine erste Ansicht der Zentralscheibe mit Bohrungen.
They show:
  • Figure 1 a perspective view of a lifting device with a load-bearing unit with four support arms,
  • Figure 2 an enlarged section of a central disc with a support arm, showing the fixation of the support arm in the closed state;
  • Figure 3 an enlarged section of a central disc with a support arm, which shows the fixation of the support arm in the open state and
  • Figure 4 a first view of the central disc with holes.

Ausführungsformen der Erfindungembodiments of the invention

Figur 1 zeigt eine perspektivische Ansicht einer Hebevorrichtung 1 mit einer Lastaufnahmeeinheit 2 und einer Stützeinheit 4, welche beispielsweise an einer Hubeinheit befestigt werden kann. Die Lastaufnahmeeinheit 2 dient zur Verbindung mit einem Bauteil eines Kraftfahrzeuges und weist aus diesem Grund mindestens einen Tragarm 3 auf. Figure 1 shows a perspective view of a lifting device 1 with a load-bearing unit 2 and a support unit 4, which can be attached to a lifting unit, for example. The load-bearing unit 2 is used for connection to a component of a motor vehicle and for this reason has at least one support arm 3.

Ein Ausführungsbeispiel mit vier Tragarmen 3 ist in der Figur 1 gezeigt, wobei die vier Tragarme 3 um eine zentrale Achse 10 drehbar sind. Um eine Verbindung zwischen einem Bauteil eines Kraftfahrzeuges und der Lastaufnahmeeinheit 2 möglichst flexibel zu gestalten, können die Tragarme 3 mindestens eine Kopplungseinheit 9 oder mindestens eine Aufnahmeeinheit 9 aufweisen, welche an dem Tragarm 3 längsverschieblich angeordnet sind und zur lösbaren Verbindung des Tragarms 3 mit der Baugruppe des Kraftfahrzeugs ausgebildet sind.An embodiment with four support arms 3 is shown in the Figure 1 shown, wherein the four support arms 3 are rotatable about a central axis 10. In order to make a connection between a component of a motor vehicle and the load-bearing unit 2 as flexible as possible, the support arms 3 can have at least one coupling unit 9 or at least one receiving unit 9, which are arranged longitudinally displaceably on the support arm 3 and are designed for the detachable connection of the support arm 3 to the assembly of the motor vehicle.

Neben dem mindestens einen Tragarm 3 weist die Lastaufnahmeeinheit 2 auch eine Zentralscheibe 11 auf, wobei die Zentralscheibe 11 rotationssymmetrisch um die zentrale Achse 10 angeordnet ist.In addition to the at least one support arm 3, the load-bearing unit 2 also has a central disk 11, wherein the central disk 11 is arranged rotationally symmetrically about the central axis 10.

Die Tragarme 3 sind mit einer Hebelklemme 30 verbunden, so dass sich eine Kante 12 der Zentralscheibe 11 zwischen dem unteren Rand der Zentralscheibe 11 und der Hebelklemme 30 befindet. Mit Hilfe der Hebelklemme 30 lässt sich der Tragarm 3 an der Zentralscheibe 11 fixieren, so dass sich der Tragarm 3 nicht mehr bewegen lässt, oder wieder lösen, so dass sich der Tragarm um die zentrale Achse 10 drehen lässt.The support arms 3 are connected to a lever clamp 30 so that an edge 12 of the central disk 11 is located between the lower edge of the central disk 11 and the lever clamp 30. With the help of the lever clamp 30, the support arm 3 can be fixed to the central disk 11 so that the support arm 3 can no longer be moved, or released again so that the support arm can rotate about the central axis 10.

Figur 2 zeigt einen vergrößerten Ausschnitt einer Zentralscheibe 11 mit einem Tragarm 3, welcher die Fixierung des Tragarmes 3 im geschlossenen Zustand zeigt. Die Hebelklemme 30 ist am der Zentralscheibe 11 zugewandten Ende des Tragarmes 3 befestigt. Eine Kante 12 der Zentralscheibe 11, welche als Führungskante ausgebildet ist, wird sowohl vom Tragarm 3 als auch von der Hebelklemme 30 umschlossen. Eine Fixierung des Tragarmes 3 erfolgt, indem die Schraube 13, welche sich in einem Gewinde befindet, angezogen wird. Die Fixierung des Tragarmes 3 wird gelockert, indem die Schraube 13, welche sich in dem Gewinde befindet, geöffnet wird. Figure 2 shows an enlarged section of a central disk 11 with a support arm 3, which shows the fixation of the support arm 3 in the closed state. The lever clamp 30 is attached to the end of the support arm 3 facing the central disk 11. An edge 12 of the central disk 11, which is designed as a guide edge, is enclosed by both the support arm 3 and the lever clamp 30. The support arm 3 is fixed by tightening the screw 13, which is located in a thread. The fixation of the support arm 3 is loosened by opening the screw 13, which is located in the thread.

Der Tragarm 3 ist des Weiteren über einen Bügel 14, welcher um eine Halterung rotierbar ist, mit der Zentralscheibe 11 verbunden, so dass der Tragarm 3 auch wenn die Fixierung geöffnet ist, mit der Zentralscheibe 11 verbunden sind.The support arm 3 is further connected to the central disk 11 via a bracket 14, which is rotatable about a holder, so that the support arm 3 is connected to the central disk 11 even when the fixation is open.

Figur 3 zeigt einen vergrößerten Ausschnitt der Zentralscheibe 11 mit einem Tragarm, welcher die Fixierung des Tragarmes im geöffneten Zustand zeigt. Figure 3 shows an enlarged section of the central disk 11 with a support arm, which shows the fixation of the support arm in the open state.

Die Hebelklemme 30 weist auf der der Zentralscheibe 11 zugewandten Seite mindestens zwei angefederte Stifte 32 auf. Die angefederten Stifte 32 sind federbelastet und können entgegen einer Federkraft vollständig in einer Vertiefung der Hebelklemme 30 versenkt werden. Die Vertiefung hat dabei einen Durchmesser, der dem Außendurchmesser der angefederten Stifte 32 entspricht. Die angefederten Stifte 32 können einen kreisförmigen Querschnitt aufweisen und oben eine abgerundete Spitze haben.The lever clamp 30 has at least two spring-loaded pins 32 on the side facing the central disk 11. The spring-loaded pins 32 are spring-loaded and can be completely sunk into a recess in the lever clamp 30 against a spring force. The recess has a diameter that corresponds to the outer diameter of the spring-loaded pins 32. The spring-loaded pins 32 can have a circular cross-section and a rounded tip at the top.

Bei einer Fixierung des Tragarmes 3 an der Zentralscheibe 11 durch ein Anziehen der Schraube 13, werden die angefederten Stifte 32 in der Vertiefung versenkt und wirken mit einer Kraft, die der Federkraft entspricht auf die Oberfläche der Zentralscheibe 11.When the support arm 3 is fixed to the central disk 11 by tightening the screw 13, the spring-loaded pins 32 are sunk into the recess and act on the surface of the central disk 11 with a force that corresponds to the spring force.

In einem weiteren Ausführungsbeispiel kann die Zentralscheibe 11 Bohrungen 33 aufweisen. In Figur 4 ist eine entsprechende Zentralscheibe 11 mit Bohrungen 33 gezeigt. Die Bohrungen 33 sind dabei auf der Unterseite der Zentralscheibe 11, also der der Stützeinheit 4 zugewandten Seite, angeordnet. Die Bohrungen 33 sind dabei so angeordnet, dass sie mit den angefederten Stiften 32 einen Formschluss eingehen können, wenn der Tragarm 3 eine Winkelposition einnimmt, so dass Bohrung 33 und angefederter Stift 32 sich gegenüberliegen. Die Bohrungen 33 haben einen Innendurchmesser, der dem Außendurchmesser der angefederten Stifte 32 entspricht.In a further embodiment, the central disk 11 can have holes 33. In Figure 4 a corresponding central disk 11 with holes 33 is shown. The holes 33 are arranged on the underside of the central disk 11, i.e. the side facing the support unit 4. The holes 33 are arranged in such a way that they can form a positive connection with the spring-loaded pins 32 when the support arm 3 assumes an angular position so that the hole 33 and the spring-loaded pin 32 are opposite each other. The holes 33 have an inner diameter that corresponds to the outer diameter of the spring-loaded pins 32.

Die Bohrungen 33 sind dabei von der zentralen Achse 10 im selben Abstand wie die angefederten Stifte 32 angeordnet. Die Bohrungen 33 sind meist am äußeren Rand der Zentralscheibe 11 angeordnet, so dass die angefederten Stifte 32 mit den Bohrungen 33 einen Formschluss eingehen können. Hierbei sind die Bohrungen 33 im gleichmäßigen Abstand entlang des äußeren Randes der Zentralscheibe 11 angeordnet sind.The holes 33 are arranged at the same distance from the central axis 10 as the spring-loaded pins 32. The holes 33 are usually arranged on the outer edge of the central disk 11 so that the spring-loaded pins 32 can form a positive connection with the holes 33. The holes 33 are arranged at an equal distance along the outer edge of the central disk 11.

Gemäß einer besonders bevorzugten Ausführungsform sind auf der Zentralscheibe 11 zweiundsiebzig Bohrungen 33 gleichmäßig verteilt angeordnet. Der Mittelpunkt jeweils einer Bohrung 33 weist ausgehen von der Zentralen Achse 10 einen Winkel von 5° zur nächsten Bohrung 33 auf. Jede Bohrungen 33 hat einen Durchmesser von 5 mm und weist eine Tiefe von 4,5 mm auf. Auf der Hebelklemme 30 sind jeweils 6 angefederte Stifte 32 angeordnet, wobei der Mittelpunkt eines kreisförmigen Stiftes 32 ausgehend von der Zentralen Achse 10 einen Winkel von 5,2° zur zum Mittelpunkt des nächsten Stiftes 32 aufweist.According to a particularly preferred embodiment, seventy-two holes 33 are evenly distributed on the central disk 11. The center of each hole 33 has an angle of 5° to the next hole 33 starting from the central axis 10. Each hole 33 has a diameter of 5 mm and a depth of 4.5 mm. Six spring-loaded pins 32 are arranged on the lever clamp 30, the center of a circular pin 32 starting from the central axis 10 having an angle of 5.2° to the center of the next pin 32.

Die Fixierung des mindestens einen Tragarmes 3 an der Zentralscheibe 11 kann abhängig von der gewählten Winkellage auf zwei Weisen erfolgen.The fixation of at least one support arm 3 to the central disk 11 can be carried out in two ways depending on the selected angular position.

Ist die Winkellage so gewählt, dass sich kein angefederter Stift 32 und keine Bohrung 33 direkt gegenüberliegen, so erfolgt die Fixierung der Tragarmes 3 durch einen Kraftschluss. Der Kraftschluss erfolgt, indem die auf der Hebelklemme 30 angeordneten angefederten Stifte 32 gegen die Zentralscheibe 11 gepresst werden.If the angular position is selected such that no spring-loaded pin 32 and no hole 33 are directly opposite each other, the support arm 3 is fixed by means of a force connection. The force connection is achieved by pressing the spring-loaded pins 32 arranged on the lever clamp 30 against the central disk 11.

Ist dagegen die Winkellage so gewählt, dass sich mindestens ein angefederter Stift 32 und mindestens eine Bohrung 33 gegenüberliegen, so erfolgt die Fixierung des Tragarmes 3 durch einen Formschluss und einen Kraftschluss. Der Formschluss erfolgt, indem mindestens ein abgefederter Stift 32 mit mindestens einer Bohrung 33 einen Formschluss eingeht, indem der angefederte Stift 32 in die Bohrung 33 eingreift, und die übrigen angefederten Stifte 32 gegen die Zentralscheibe 11 gepresst werden und einen Kraftschluss eingehen.If, however, the angular position is selected such that at least one spring-loaded pin 32 and at least one bore 33 are opposite each other, the support arm 3 is fixed by a positive connection and a frictional connection. The positive connection is achieved by at least one spring-loaded pin 32 entering into a positive connection with at least one bore 33, by the spring-loaded pin 32 engaging in the bore 33, and the other spring-loaded pins 32 being pressed against the central disk 11 and entering into a frictional connection.

Im gezeigten Ausführungsbeispiel der Figuren 2 und 3 weist die Hebelklemme 30 sechs angefederte Stifte 32 auf.In the example shown, the Figures 2 and 3 the lever clamp 30 has six spring-loaded pins 32.

Bei dem Ausführungsbeispiel mit sechs angefederten Stiften 32 erfolgt die Fixierung der Tragarmes 3 bei einem reinen Kraftschluss (Winkellage ist so gewählt, dass sich die Bohrungen 33 und die Stifte 32 nicht gegenüberliegen), indem die sechs abgefederten Stifte 32 gegen die Wand der Zentralscheibe 11 gepresst werden. Da jeder der angefederten Stifte 32 mit einer Federkraft belastet ist, erfolgt ein Kraftschluss zwischen Tragarm 3 und Zentralscheibe 11, welcher mindestens sechs Mal der Federkraft entspricht. Außer der Kraft durch die Federn erfolgt auch noch ein Kraftschluss aufgrund der Oberflächenreibung zwischen den weiteren Berührungspunkten zwischen Tragarm 3 mit Hebelklemme 30 und der Zentralscheibe 11.In the embodiment with six spring-loaded pins 32, the support arm 3 is fixed in place using a pure force connection (the angle position is selected so that the holes 33 and the pins 32 are not opposite each other) by pressing the six spring-loaded pins 32 against the wall of the central disk 11. Since each of the spring-loaded pins 32 is loaded with a spring force, a force connection occurs between the support arm 3 and the central disk 11, which corresponds to at least six times the spring force. In addition to the force from the springs, a force connection also occurs due to the surface friction between the other contact points between the support arm 3 with the lever clamp 30 and the central disk 11.

Ist die Winkellage bei diesem Ausführungsbeispiel dagegen so gewählt, dass sich ein angefederter Stift 32 und eine Bohrung 33 direkt gegenüberliegen, so erfolgt die Fixierung der Tragarmes 3 durch einen Formschluss und einen Kraftschluss. Beim Kraftschluss werden die verbleibenden fünf angefederte Stifte 32 gegen die Wand der Zentralscheibe 11 gepresst. Da jeder der angefederten Stifte 32 mit einer Federkraft belastet ist, erfolgt ein Kraftschluss zwischen Tragarm 3 und Zentralscheibe 11, welcher mindestens fünf Mal der Federkraft entspricht. Außer der Kraft durch die Federn erfolgt auch noch ein Kraftschluss aufgrund der Oberflächenreibung zwischen den weiteren Berührungspunkten zwischen Tragarm 3 mit Hebelklemme 30 und der Zentralscheibe 11.If, however, the angular position in this embodiment is selected such that a spring-loaded pin 32 and a hole 33 are directly opposite each other, the support arm 3 is fixed by a positive connection and a frictional connection. During the frictional connection, the remaining five spring-loaded pins 32 are pressed against the wall of the central disk 11. Since each of the spring-loaded pins 32 is loaded with a spring force, a frictional connection occurs between the support arm 3 and the central disk 11, which corresponds to at least five times the spring force. In addition to the force from the springs, a frictional connection also occurs due to the surface friction between the other contact points between the support arm 3 with the lever clamp 30 and the central disk 11.

Claims (10)

  1. Lifting apparatus (1) for an assembly of a motor vehicle, having a load suspension unit (2) with at least one carrying arm (3) and a support unit (4) which can be arranged on a lifting unit, the at least one carrying arm (3) being rotatable about a central axis (10), characterized in that the at least one carrying arm (3) is connected to a lever clamp (30), wherein the carrying arm (3) can be fixed to a central disc (11) by the lever clamp (30) such that the carrying arm (3) can no longer be moved, wherein an edge (12) of the central disc (11) is enclosed both by the carrying arm (3) and by the lever clamp (30), wherein the central disc (11) is arranged rotationally symmetrically about the central axis (10).
  2. Lifting apparatus (1) according to Claim 1, characterized in that the lever clamp (30) has at least two spring-loaded pins (32) on the side facing the central disc (11).
  3. Lifting apparatus (1) according to Claim 2, characterized in that the spring-loaded pins (32) can be completely retracted into a depression counter to a spring force.
  4. Lifting apparatus (1) according to one of the preceding claims, characterized in that the central disc (11) has bores (33) which have an inner diameter which corresponds to the outer diameter of the spring-loaded pins (32), and therefore a form-fitting connection can take place between spring-loaded pins (32) and bores (33).
  5. Lifting apparatus (1) according to Claim 4, characterized in that the bores (33) are arranged on the outer edge of the central disc (11).
  6. Lifting apparatus (1) according to Claim 5, characterized in that the bores (33) are arranged at a uniform distance along the outer edge of the central disc (11).
  7. Lifting apparatus (1) according to one of the preceding claims, characterized in that the lever clamp (30) can be fixed to the central disc (11) by a screw (13) which is guided by a thread (36).
  8. Lifting apparatus (1) according to Claim 1 or 2, wherein a coupling unit (9) or receiving unit (9) is arranged in a longitudinally displaceable manner on the carrying arm (3) and is designed for the releasable connection of the carrying arm (3) to the assembly of a motor vehicle.
  9. Method for fixing at least one carrying arm (3) of a lifting apparatus (1) according to one of the preceding claims, characterized in that the fixing of the at least one carrying arm (3) is brought about by a frictional connection, in which at least one spring-loaded pin (32), which is located on the lever clamp (30), is pressed against the central disc (11).
  10. Method for fixing at least one carrying arm (3) according to Claim 9, wherein, depending on the angular position during the fixing of the at least one carrying arm (3), at least one spring-loaded pin (32) and a bore (33) of the central disc (11) additionally enter into a form-fitting connection by a spring-loaded pin (32) engaging in a bore (33).
EP20780158.0A 2019-11-11 2020-09-23 Lifting apparatus for an assembly of a motor vehicle, and method for fixing at least one carrier arm of a lifting apparatus Active EP4058394B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019217352.7A DE102019217352A1 (en) 2019-11-11 2019-11-11 Lifting device for an assembly of a motor vehicle, and method for fixing at least one support arm of a lifting device
PCT/EP2020/076552 WO2021094022A1 (en) 2019-11-11 2020-09-23 Lifting apparatus for an assembly of a motor vehicle, and method for fixing at least one carrier arm of a lifting apparatus

Publications (2)

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EP4058394A1 EP4058394A1 (en) 2022-09-21
EP4058394B1 true EP4058394B1 (en) 2025-01-15

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EP (1) EP4058394B1 (en)
CN (1) CN114616204B (en)
DE (1) DE102019217352A1 (en)
WO (1) WO2021094022A1 (en)

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DE102023212576A1 (en) * 2023-12-13 2025-06-18 Zf Friedrichshafen Ag Traverse device and method for transporting a load using the traverse device

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EP3366633B1 (en) * 2017-02-22 2020-07-08 TKR Spezialwerkzeuge GmbH Lifting device for a motor vehicle sub-assembly and blocking unit for a lifting device.

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GB828444A (en) * 1956-03-03 1960-02-17 Guy Proisy Improvements in or relating to lifting apparatus for vehicles
US5513829A (en) * 1995-02-22 1996-05-07 Hodges; Douglas Cradle support holder
US7296787B2 (en) * 2005-03-29 2007-11-20 Spx Corporation Retractable support apparatus and method
US8256577B2 (en) * 2008-10-31 2012-09-04 Dannmar Worldwide, Inc. Portable two post automobile lift
US8235334B1 (en) * 2011-02-16 2012-08-07 Mark Kobal Tablet computer holder and support
DE102014117703A1 (en) * 2014-12-02 2016-06-02 Tkr Spezialwerkzeuge Gmbh Lifting device for an assembly of a motor vehicle
DE102016124326A1 (en) 2016-12-14 2018-06-14 Endress+Hauser Conducta Gmbh+Co. Kg Method of operating a transmitter and corresponding transducers
DE102017108064A1 (en) * 2017-04-13 2018-10-18 Gerhard Finkbeiner Pan locking device and lifting device with a pivot locking device

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EP3366633B1 (en) * 2017-02-22 2020-07-08 TKR Spezialwerkzeuge GmbH Lifting device for a motor vehicle sub-assembly and blocking unit for a lifting device.

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EP4058394A1 (en) 2022-09-21
WO2021094022A1 (en) 2021-05-20
CN114616204A (en) 2022-06-10
CN114616204B (en) 2024-04-16
DE102019217352A1 (en) 2020-04-09

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