EP2514709A1 - Reach truck - Google Patents

Reach truck Download PDF

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Publication number
EP2514709A1
EP2514709A1 EP12002687A EP12002687A EP2514709A1 EP 2514709 A1 EP2514709 A1 EP 2514709A1 EP 12002687 A EP12002687 A EP 12002687A EP 12002687 A EP12002687 A EP 12002687A EP 2514709 A1 EP2514709 A1 EP 2514709A1
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EP
European Patent Office
Prior art keywords
load
mast
holder
reach truck
mast holder
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Granted
Application number
EP12002687A
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German (de)
French (fr)
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EP2514709B1 (en
Inventor
Michael Knieriem
Volkmar Schlüter
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Jungheinrich AG
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Jungheinrich AG
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Publication of EP2514709A1 publication Critical patent/EP2514709A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/08Masts; Guides; Chains
    • B66F9/10Masts; Guides; Chains movable in a horizontal direction relative to truck

Definitions

  • the present invention relates to a reach truck with a drive part from which forterumblen parallel spaced radar arms.
  • the reach truck has a lift mast which has a mast holder movable along the wheel arms.
  • the mast holder can be moved between a vehicle-side and a load-side end position.
  • the drive part has a base plate which has at least one transverse switching edge in its rear and front region. A directed towards the base plate, mounted on the mast holder or on the mast sensor generates a switching signal when it passes over one of the switching edges.
  • the sensor is mounted in such a way that when the mast holder approaches one of its end positions, the rear or front switching edge is run over.
  • the switching edges are arranged such that the mast holder passes over the switching edge near one of the end positions with the sensor.
  • An evaluation device for a mast stop drive determines, taking into account a direction specification, which has been run over the switching edges.
  • the controllable mast holder drive is designed so that the speed for the mast holder is reduced in the process, when the sensor generates a switching signal when approaching the mast holder to an end position.
  • a side loader with indented chassis and a transversely movable mast are arranged in which on the mast and on the fixed chassis interlocking locking element for releasably connecting the lifting mast with the chassis.
  • the invention has for its object to provide a reach truck with a load-side end stop, which can be easily adjusted with little effort in a predetermined by an attachment load-side end position.
  • the object is achieved by a reach truck with the features of claim 1.
  • Advantageous developments of the reach truck form the subject of the dependent claims.
  • the reach truck according to the invention has a drive part from which extending parallel and spaced wheel arms.
  • the wheel arms are thus on the load side on the side of the mast from the drive part.
  • the reach truck according to the invention has a mast, which has a mast holder movable along the wheel arms.
  • the mast holder is movable between a vehicle-side and a load-side end position.
  • According to the mast holder on its load side at least one end stop, which cooperates with an end stop provided on the Radarmen. If the mast is moved by means of the mast holder in its load-side end position, then hit the end stops of the mast holder and the end stops in the radar arms and prevent another load-side method of the mast, which is held by the mast holder.
  • the position of the end position in the direction of travel of the lifting mast is determined by the load-side end stop of the mast holder.
  • the load-side end position of the mast holder can be determined and adapted to different attachments on the mast. This creates the possibility without an adjustment of the Stops in the Radarmen directly and without much installation effort to set the load-side end position of the mast.
  • the assembly of the reach truck is simplified and allows adaptation of the load-side end position of the mast, depending on the attachment.
  • the simplified adjustment of the load stops allows them to be adjusted without much effort for a uniform stop in both wheel arms.
  • the end stop on the mast holder has a receptacle in which a stop element is arranged.
  • the stop element may protrude at a predetermined length from the receptacle on the mast holder to define the load-side end position.
  • the stop element is adjustable in its length on the mast holder, so as to define the load-side end position.
  • an end stop in the wheel arms does not need to be replaced or adjusted in position for different attachments to the mast. Rather, it is sufficient to use a correspondingly long stop element for the proposed attachment and / or adjust the stop element in its length accordingly.
  • the load-side end stop is immovably mounted in position in each wheel arm.
  • the mounting of the end stop in the wheel arms can already be done with a pre-assembly and does not have to be done on the fully assembled radar arms in the main or final assembly.
  • the mast is designed to accommodate different attachments can.
  • the load end provided on the mast holder end stop preferably has a tuned to the Vorbauenstein the attachment length.
  • the length of the load-side end stop dimensioned such that in the load-side end position of the mast, the distance between a vehicle-side back of the attachment and an axis of the load wheels does not exceed a predetermined distance.
  • the distance of the attachment, and in particular the back of the attachment to the load wheels is a critical factor for the stability of the vehicle.
  • the wheel arms each have on their side facing each other a guide rail for the mast holder.
  • the mast holder is moved longitudinally within the guide rail.
  • drive means are provided for moving the mast holder between its vehicle-side and its load-side end position.
  • the drive means move over the mast holder the mast between its end positions.
  • Fig. 1 shows a reach truck 10 with a drive part 12 in a view from the side.
  • the drive part has a covered operator station 14 for the driver and at least one driven wheel 16.
  • Radarmen 18 which are rigidly connected on the vehicle side with a frame of the drive member 12.
  • the wheel arms 18 On the load side, the wheel arms 18 each have a load wheel 22.
  • a lifting mast 20 is movable along the wheel arms 18 in the longitudinal direction.
  • the mast 20 is shown in its retracted to the drive part 12 position as a mast 20 a.
  • the advanced position of the lifting mast 20 is shown in dashed lines and marked as 20b.
  • the mast 20 moves within the radar arms by a distance 1.
  • the connection of the lifting mast 20 to the arms 18 via a mast holder 24 which is movably mounted between the arms 18 and the lifting mast 20 moves.
  • the mast 20 is equipped with a fork-shaped load bearing means 26.
  • the load carrying means 26 can be moved along the lifting mast, wherein the load carrying means can also be raised further by extending the lifting mast.
  • the lifted within the free lift forks are shown in dashed lines as forks 26b, while the raised by extending the mast forks are shown in the mast lift as dashed lines 26c.
  • the distance referred to as X 1 between the load-side rear side, the load forks 26 a and the axis of the load wheel 22 is determining.
  • the distance X 1 should remain constant regardless of the type and geometry of the attachment.
  • the mast is located in the position shown at 20a in its vehicle-side end position.
  • the mast designated 20b is in its load-side end position.
  • Fig. 2 shows the mast holder 24 in a perspective view from the load side.
  • the mast holder 24 has two L-shaped elements in which a leg 28 is horizontal and a leg 30 is substantially vertical. Between the legs 28 of the L-shaped elements, a cover plate 32 is provided. The legs 28 are connected to each other via a U-shaped support 33, which also engages the thrust cylinder (not shown).
  • the vertically standing legs 30 of the L-shaped elements are interconnected by a connecting plate 34.
  • rollers 36 of the mast holder 24 is slidably mounted in guide rails of the wheel arms 18.
  • an end stop 38 is provided.
  • Fig. 3 shows one of the stops 38 in detail.
  • the end stop 38 has a receptacle 40 and an over the length B from the exception 40 projecting stop member 42 with a frontal abutment surface.
  • the stop member 42 has at its free end a flattening 44, via which an attacking tool can screw it into the receptacle 40 for adjusting the length B.
  • Fig. 4 shows a load-side end stop 46, which is arranged in a guide rail 48 of the Radarms 18.
  • the end stop 46 is positioned in a fixed position in the guide rail 48 via screws 50.
  • the end stop 46 can be removed.
  • the free end of the stop member 42 abuts the vehicle side of the end stop 46 and thus limits further feed of the mast holder and thus the mast. If the length of the stop element 42 is increased, the maximum feed width of the mast holder 24 is reduced and thus also the distance designated as X 1 .
  • the mast holder attachment of the variable-length, peg-shaped stop member 42 is not on the frame of the drive part or on the Radarmen, but on the mast holder 24. This allows the stopper 38 are already installed in the pre-assembly and so the mounting portion on the main assembly line can be reduced. At the same time, the stop element 42 is designed as a turned part and thus inexpensive to produce. On the frame profile a non-adjustable stop block 46 is mounted, whereby the accessibility to the wheel bearing and the brake mounting for a method of the mast holder 24 is improved.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The reach truck has a drive part (12), from which parallel-spaced wheel arms (18) are stretched, where a lift pole (20a) is provided with a pole holder (24) that is displaceable along the wheel arms. The pole holder is displaceable between a vehicle-sided end position and a load-sided end position. The pole holder at its load side has an end stopper which cooperates with another end stopper provided at the wheel arms. The length of the former end stopper defines in travel direction of the pole holder of the load-sided end position of the pole holder.

Description

Die vorliegende Erfindung betrifft einen Schubmaststapler mit einem Antriebsteil, von dem sich parallel beabstandete Radarme forterstrecken. Der Schubmaststapler besitzt einen Hubmast, der einen entlang der Radarme verfahrbaren Masthalter aufweist. Der Masthalter kann zwischen einer fahrzeugseitigen und einer lastseitigen Endposition verfahren werden.The present invention relates to a reach truck with a drive part from which forterstrecken parallel spaced radar arms. The reach truck has a lift mast which has a mast holder movable along the wheel arms. The mast holder can be moved between a vehicle-side and a load-side end position.

Aus EP 1 772 419 A2 ist ein Schubmaststapler mit einem Antriebsteil bekannt geworden. Das Antriebsteil weist eine Grundplatte auf, die in ihrem hinteren und vorderen Bereich jeweils mindestens eine quer verlaufende Schaltkante besitzt. Ein zur Grundplatte hin gerichteter, am Masthalter oder am Mast angebrachter Sensor erzeugt ein Schaltsignal, wenn er eine der Schaltkanten überfährt. Der Sensor ist derart angebracht, dass bei Annäherung des Masthalters an eine seiner Endpositionen die hintere oder vordere Schaltkante überfahren wird. Um den Hubmast zwischen einer fahrzeugseitigen und einer lastseitigen Endposition zu verfahren, sind die Schaltkanten derart angeordnet, dass der Masthalter nahe einer der Endpositionen mit dem Sensor die Schaltkante überfährt. Eine Auswertevorrichtung für einen Masthalteantrieb ermittelt unter Hinzuziehung einer Richtungsvorgabe, welche der Schaltkanten überfahren wurde. Der steuerbare Masthalterantrieb ist so ausgelegt, dass die Geschwindigkeit für den Masthalter beim Verfahren reduziert wird, wenn der Sensor bei Annäherung des Masthalters an eine Endposition ein Schaltsignal erzeugt.Out EP 1 772 419 A2 a reach truck with a drive part has become known. The drive part has a base plate which has at least one transverse switching edge in its rear and front region. A directed towards the base plate, mounted on the mast holder or on the mast sensor generates a switching signal when it passes over one of the switching edges. The sensor is mounted in such a way that when the mast holder approaches one of its end positions, the rear or front switching edge is run over. In order to move the lifting mast between a vehicle-side and a load-side end position, the switching edges are arranged such that the mast holder passes over the switching edge near one of the end positions with the sensor. An evaluation device for a mast stop drive determines, taking into account a direction specification, which has been run over the switching edges. The controllable mast holder drive is designed so that the speed for the mast holder is reduced in the process, when the sensor generates a switching signal when approaching the mast holder to an end position.

Aus DT 26 09 029 A1 ist ein Schubmaststapler mit einem Fahrgestell bekannt geworden, bei dem ein Zwischenraum zwischen dem Antriebsteil des Fahrzeugs und des Hubgerüsts auf das Vorliegen eines Hindernisses überwacht wird.From DT 26 09 029 A1 a reach truck with a chassis has become known in which a gap between the driving part of the vehicle and the mast is monitored for the presence of an obstacle.

Aus der Auslegeschrift DE 1 270 495 ist ein Seitenlader mit eingebuchtetem Fahrgestell und einem quer verfahrbaren Hubmast bekannt geworden, bei dem an dem Hubmast und an dem feststehenden Fahrgestell ineinandergreifende Verriegelungselement zur lösbaren Verbindung des Hubmasts mit dem Fahrgestell angeordnet sind.From the layout DE 1 270 495 is known a side loader with indented chassis and a transversely movable mast, are arranged in which on the mast and on the fixed chassis interlocking locking element for releasably connecting the lifting mast with the chassis.

Allgemein ist bekannt, dass der lastseitige Endanschlag eines Masthalters bei einem Schubmaststapler von maßgeblicher Bedeutung für dessen Standsicherheit ist. In Gabelrichtung, also lastseitig, ist es aus Gründen der Standsicherheit erforderlich, ein enges Toleranzfeld für den Abstand des Gabelrückens zur Achse der Lasträder einzuhalten. Bei der Verwendung von unterschiedlichen Anbaugeräten mit variierendem Vorbaumaß ist die Lage des endlastseitigen Endanschlags an das Anbaugerät daher anzupassen.It is generally known that the load-side end stop of a mast holder in a reach truck is of crucial importance for its stability. In the fork direction, ie the load side, it is necessary for reasons of stability, to maintain a narrow tolerance range for the distance of the fork back to the axis of the load wheels. When using different attachments with varying Vorbaumaß the position of the end load end stop on the attachment is therefore adapt.

Hier ist es bekannt, eine ausschließlich durch Software gesteuerte Abschaltung vorzusehen, die in der korrekten Position des Masthalters abschaltet und nicht auf mechanische Endanschläge zurückgreift. Die softwaremäßige Abschaltung stellt hohe Anforderungen an die Sicherheit und Zuverlässigkeit der Sensorik, so dass diese aufwendig ausgestaltet werden muss.Here it is known to provide an exclusively controlled by software shutdown, which shuts off in the correct position of the mast holder and does not rely on mechanical end stops. The software-based shutdown makes high demands on the safety and reliability of the sensor, so that it must be designed consuming.

Ferner ist bekannt, die Abschaltung durch einen Endanschlag in einem Schiebezylinder des Masthalterantriebs vorzusehen. Dies macht allerdings bei der Verwendung von unterschiedlichen Anbaugeräten den Einsatz von unterschiedlichen Schiebezylindern für den Antrieb notwendig. Auch die Verwendung von mechanischen Endanschlägen in den Radarmen ist bekannt. Hierbei wird der lastseitige Endanschlag je nach Ausführung des Anbaugeräts für eine definierte Position in den Radarmen montiert. Als nachteilig an dieser Variante hat sich herausgestellt, dass die Montage der Anschläge nicht in einer Vormontage erfolgen kann, sondern in der sogenannten Hauptmontage erfolgen muss.It is also known to provide the shutdown by an end stop in a sliding cylinder of the mast holder drive. However, this requires the use of different sliding cylinders for the drive when using different attachments. The use of mechanical end stops in the Radarmen is known. Here, the load-side end stop is mounted depending on the design of the attachment for a defined position in the Radarmen. A disadvantage of this variant has pointed out that the assembly of the attacks can not be done in a pre-assembly, but must be done in the so-called main assembly.

Der Erfindung liegt die Aufgabe zugrunde, einen Schubmaststapler mit einem lastseitigen Endanschlag bereitzustellen, der mit geringem Aufwand einfach in eine durch ein Anbaugerät vorgegebene lastseitige Endposition angepasst werden kann.The invention has for its object to provide a reach truck with a load-side end stop, which can be easily adjusted with little effort in a predetermined by an attachment load-side end position.

Erfindungsgemäß wird die Aufgabe durch einen Schubmaststapler mit den Merkmalen aus Anspruch 1 gelöst. Vorteilhafte Weiterbildungen des Schubmaststaplers bilden den Gegenstand der Unteransprüche.According to the invention the object is achieved by a reach truck with the features of claim 1. Advantageous developments of the reach truck form the subject of the dependent claims.

Der erfindungsgemäße Schubmaststapler besitzt ein Antriebsteil, von dem sich parallel verlaufende und voneinander beabstandete Radarme erstrecken. Die Radarme stehen somit lastseitig auf der Seite des Hubgerüsts aus dem Antriebsteil vor. Ferner besitzt der erfindungsgemäße Schubmaststapler einen Hubmast, der einen entlang der Radarme verfahrbaren Masthalter aufweist. Der Masthalter ist zwischen einer fahrzeugseitigen und einer lastseitigen Endposition verfahrbar. Erfindungsgemäß weist der Masthalter an seiner Lastseite mindestens einen Endanschlag auf, der mit einem an den Radarmen vorgesehenen Endanschlag zusammenwirkt. Wird der Hubmast mittels des Masthalters in seine lastseitige Endposition verfahren, so stoßen die Endanschläge des Masthalters und die Endanschläge in den Radarmen aufeinander und verhindern ein weiteres lastseitiges Verfahren des Hubmastes, der von dem Masthalter gehalten ist. Erfindungsgemäß ist die Lage der Endposition in Verfahrrichtung des Hubmastes durch den lastseitigen Endanschlag des Masthalters festgelegt. Durch eine geeignete Wahl der Länge des lastseitigen Endanschlags an dem Masthalter kann die lastseitige Endposition des Masthalters bestimmt und so an unterschiedliche Anbaugeräte an dem Hubmast angepasst werden. Dies schafft die Möglichkeit, ohne eine Verstellung der Anschläge in den Radarmen direkt und ohne großen Montageaufwand die lastseitige Endposition des Hubmastes festzulegen. Hierdurch wird einerseits die Montage des Schubmaststaplers vereinfacht und eine Anpassung der lastseitigen Endposition des Hubmastes je nach Anbaugerät ermöglicht. Zudem erlaubt die vereinfachte Verstellung der Lastanschläge, diese ohne großen Aufwand für einen gleichmäßigen Anschlag in beiden Radarmen einzustellen.The reach truck according to the invention has a drive part from which extending parallel and spaced wheel arms. The wheel arms are thus on the load side on the side of the mast from the drive part. Further, the reach truck according to the invention has a mast, which has a mast holder movable along the wheel arms. The mast holder is movable between a vehicle-side and a load-side end position. According to the mast holder on its load side at least one end stop, which cooperates with an end stop provided on the Radarmen. If the mast is moved by means of the mast holder in its load-side end position, then hit the end stops of the mast holder and the end stops in the radar arms and prevent another load-side method of the mast, which is held by the mast holder. According to the invention, the position of the end position in the direction of travel of the lifting mast is determined by the load-side end stop of the mast holder. By a suitable choice of the length of the load-side end stop on the mast holder, the load-side end position of the mast holder can be determined and adapted to different attachments on the mast. This creates the possibility without an adjustment of the Stops in the Radarmen directly and without much installation effort to set the load-side end position of the mast. As a result, on the one hand, the assembly of the reach truck is simplified and allows adaptation of the load-side end position of the mast, depending on the attachment. In addition, the simplified adjustment of the load stops allows them to be adjusted without much effort for a uniform stop in both wheel arms.

In einer bevorzugten Ausgestaltung weist der Endanschlag an dem Masthalter eine Aufnahme auf, in der ein Anschlagelement angeordnet ist. Je nach vorgesehenem Anbaugerät kann das Anschlagelement in einer vorbestimmten Länge aus der Aufnahme an dem Masthalter vorstehen, um die lastseitige Endposition zu definieren. Auch kann vorgesehen sein, dass das Anschlagelement in seiner Länge an dem Masthalter einstellbar ist, um so die lastseitige Endposition zu definieren. Bei dieser Ausgestaltung muss für unterschiedliche Anbaugeräte an das Hubgerüst ein Endanschlag in den Radarmen nicht ausgetauscht oder in seiner Position verstellt werden. Vielmehr ist es ausreichend, ein entsprechend langes Anschlagelement für das vorgesehene Anbaugerät zu verwenden und/oder das Anschlagelement in seiner Länge entsprechend einzustellen.In a preferred embodiment, the end stop on the mast holder has a receptacle in which a stop element is arranged. Depending on the attachment provided, the stop element may protrude at a predetermined length from the receptacle on the mast holder to define the load-side end position. It can also be provided that the stop element is adjustable in its length on the mast holder, so as to define the load-side end position. In this embodiment, an end stop in the wheel arms does not need to be replaced or adjusted in position for different attachments to the mast. Rather, it is sufficient to use a correspondingly long stop element for the proposed attachment and / or adjust the stop element in its length accordingly.

In einer bevorzugten Ausgestaltung ist in jedem Radarm der lastseitige Endanschlag in seiner Position unveränderlich montiert. Die Montage des Endanschlags in den Radarmen kann bereits bei einer Vormontage erfolgen und muss nicht an den fertig montierten Radarmen in der Haupt- oder Endmontage erfolgen.In a preferred embodiment, the load-side end stop is immovably mounted in position in each wheel arm. The mounting of the end stop in the wheel arms can already be done with a pre-assembly and does not have to be done on the fully assembled radar arms in the main or final assembly.

In einer bevorzugten Ausgestaltung ist der Hubmast ausgebildet, um unterschiedliche Anbaugeräte aufnehmen zu können. Der lastseitig an dem Masthalter vorgesehene Endanschlag besitzt dabei bevorzugt eine auf das Vorbaumaß des Anbaugeräts abgestimmte Länge. Bevorzugt ist die Länge des lastseitigen Endanschlags derart bemessen, dass in der lastseitigen Endposition des Schubmastes der Abstand zwischen einer fahrzeugseitigen Rückseite des Anbaugeräts und einer Achse der Lasträder einen vorbestimmten Abstand nicht übersteigt. Der Abstand des Anbaugeräts und insbesondere der Rückseite des Anbaugeräts zu den Lasträdern ist eine kritische Größe für die Standfestigkeit des Fahrzeugs.In a preferred embodiment of the mast is designed to accommodate different attachments can. The load end provided on the mast holder end stop preferably has a tuned to the Vorbaumaß the attachment length. Preferably, the length of the load-side end stop dimensioned such that in the load-side end position of the mast, the distance between a vehicle-side back of the attachment and an axis of the load wheels does not exceed a predetermined distance. The distance of the attachment, and in particular the back of the attachment to the load wheels is a critical factor for the stability of the vehicle.

Um den Masthalter in Längsrichtung zu verfahren, besitzen die Radarme auf ihrer einander zugewandten Seite jeweils eine Führungsschiene für den Masthalter. Der Masthalter wird innerhalb der Führungsschiene in Längsrichtung verfahren.To move the mast holder in the longitudinal direction, the wheel arms each have on their side facing each other a guide rail for the mast holder. The mast holder is moved longitudinally within the guide rail.

Zweckmäßigerweise sind Antriebsmittel zum Verfahren des Masthalters zwischen seiner fahrzeugseitigen und seiner lastseitigen Endposition vorgesehen. Die Antriebsmittel bewegen über den Masthalter den Hubmast zwischen seinen Endpositionen.Expediently, drive means are provided for moving the mast holder between its vehicle-side and its load-side end position. The drive means move over the mast holder the mast between its end positions.

Eine bevorzugte Ausgestaltung eines Schubmaststaplers wird nachfolgend näher erläutert. Es zeigt:

Fig. 1
einen Schubmaststapler in einer Ansicht von der Seite,
Fig. 2
einen Masthalter für den Schubmaststapler in einer perspektivischen Ansicht von der Lastseite,
Fig. 3
ein Anschlagelement des Masthalters aus Fig. 2 und
Fig. 4
einen längenunveränderlichen Anschlagklotz in dem Radarm in einer Ansicht von innen.
A preferred embodiment of a reach truck is explained in more detail below. It shows:
Fig. 1
a reach truck in a view from the side,
Fig. 2
a mast holder for the reach truck in a perspective view from the load side,
Fig. 3
a stop element of the mast holder Fig. 2 and
Fig. 4
a non-adjustable stop block in the wheel arm in a view from the inside.

Fig. 1 zeigt einen Schubmaststapler 10 mit einem Antriebsteil 12 in einer Ansicht von der Seite. Das Antriebsteil besitzt einen überdachten Bedienplatz 14 für den Fahrzeugführer und mindestens ein angetriebenes Rad 16. Seitlich an dem Antriebsteil 12 stehen Radarmen 18 vor, die fahrzeugseitig starr mit einem Rahmen des Antriebsteils 12 verbunden sind. Lastseitig besitzen die Radarme 18 jeweils ein Lastrad 22. Ein Hubmast 20 ist entlang der Radarme 18 in Längsrichtung verfahrbar. Der Hubmast 20 ist in seiner zum Antriebsteil 12 zurückgezogenen Position als Hubmast 20a dargestellt. Die vorgeschobene Position des Hubmastes 20 ist gestrichelt eingezeichnet und als 20b gekennzeichnet. Der Hubmast 20 verfährt innerhalb der Radarme um eine Strecke 1. Die Verbindung des Hubmasts 20 zu den Radarmen 18 erfolgt über einen Masthalter 24, der zwischen den Radarmen 18 verfahrbar gelagert ist und den Hubmast 20 verfährt. Fig. 1 shows a reach truck 10 with a drive part 12 in a view from the side. The drive part has a covered operator station 14 for the driver and at least one driven wheel 16. Laterally on the drive member 12 are provided before Radarmen 18, which are rigidly connected on the vehicle side with a frame of the drive member 12. On the load side, the wheel arms 18 each have a load wheel 22. A lifting mast 20 is movable along the wheel arms 18 in the longitudinal direction. The mast 20 is shown in its retracted to the drive part 12 position as a mast 20 a. The advanced position of the lifting mast 20 is shown in dashed lines and marked as 20b. The mast 20 moves within the radar arms by a distance 1. The connection of the lifting mast 20 to the arms 18 via a mast holder 24 which is movably mounted between the arms 18 and the lifting mast 20 moves.

In dem in Fig. 1 dargestellten Schubmaststapler ist der Hubmast 20 mit einem gabelförmigen Lasttragmittel 26 ausgestattet. Das Lasttragmittel 26 kann entlang dem Hubmast verfahren werden, wobei durch Ausfahren des Hubmastes das Lasttragmittel auch weiter angehoben werden kann. Die innerhalb des Freihubs angehobenen Lastgabeln sind gestrichelt als Lastgabeln 26b dargestellt, während die durch Ausfahren des Hubmastes angehobenen Lastgabeln im Masthub als 26c gestrichelt dargestellt sind.In the in Fig. 1 illustrated reach truck, the mast 20 is equipped with a fork-shaped load bearing means 26. The load carrying means 26 can be moved along the lifting mast, wherein the load carrying means can also be raised further by extending the lifting mast. The lifted within the free lift forks are shown in dashed lines as forks 26b, while the raised by extending the mast forks are shown in the mast lift as dashed lines 26c.

Für die Standfestigkeit des Schubmaststaplers ist der als X1 bezeichnete Abstand zwischen der lastseitigen Rückseite, der Lastgabeln 26a und der Achse des Lastrades 22 bestimmend. Der Abstand X1 soll unabhängig von Art und Geometrie des Anbaugeräts konstant bleiben.For the stability of the reach truck, the distance referred to as X 1 between the load-side rear side, the load forks 26 a and the axis of the load wheel 22 is determining. The distance X 1 should remain constant regardless of the type and geometry of the attachment.

Der Hubmast befindet sich in der mit 20a dargestellten Position in seiner fahrzeugseitigen Endposition. Der mit 20b bezeichnete Hubmast befindet sich in seiner lastseitigen Endposition. Zur Begrenzung des Verfahrweges des Hubmastes 20 bzw. des Masthalters 24 zwischen den Radarmen 18 sind jeweils fahrzeugseitige und lastseitige Endanschläge vorgesehen.The mast is located in the position shown at 20a in its vehicle-side end position. The mast designated 20b is in its load-side end position. To limit the travel of the mast 20 and the mast holder 24 between the Radarmen 18 respectively vehicle-side and load-side end stops are provided.

Fig. 2 zeigt den Masthalter 24 in einer perspektivischen Ansicht von der Lastseite. Der Masthalter 24 besitzt zwei L-förmige Elemente, bei denen ein Schenkel 28 horizontal und ein Schenkel 30 im Wesentlichen vertikal verläuft. Zwischen den Schenkeln 28 der L-förmigen Elemente ist ein Abdeckblech 32 vorgesehen. Die Schenkel 28 sind über einen U-förmigen Träger 33 miteinander verbunden, an dem auch der Schubzylinder (nicht dargestellt) angreift. Die vertikal stehenden Schenkel 30 der L-förmigen Elemente sind durch eine Verbindungsplatte 34 miteinander verbunden. Über an dem horizontalen Schenkel 28 angebrachte Rollen 36 ist der Masthalter 24 in Führungsschienen der Radarme 18 verschieblich gelagert. Fig. 2 shows the mast holder 24 in a perspective view from the load side. The mast holder 24 has two L-shaped elements in which a leg 28 is horizontal and a leg 30 is substantially vertical. Between the legs 28 of the L-shaped elements, a cover plate 32 is provided. The legs 28 are connected to each other via a U-shaped support 33, which also engages the thrust cylinder (not shown). The vertically standing legs 30 of the L-shaped elements are interconnected by a connecting plate 34. By mounted on the horizontal leg 28 rollers 36 of the mast holder 24 is slidably mounted in guide rails of the wheel arms 18.

An dem lastseitigen Ende des Schenkels 28 ist ein Endanschlag 38 vorgesehen.At the load-side end of the leg 28, an end stop 38 is provided.

Fig. 3 zeigt einen der Endanschläge 38 im Detail. Der Endanschlag 38 besitzt eine Aufnahme 40 und ein über die Länge B aus der Ausnahme 40 vorstehendes Anschlagelement 42 mit einer stirnseitigen Anschlagfläche. Das Anschlagelement 42 besitzt an seinem freien Ende eine Abflachung 44, über die ein angreifendes Werkzeug es in die Aufnahme 40 zum Einstellen der Länge B schrauben kann. Alternativ ist es auch möglich, statt eines einschraubbaren Anschlagelements, ein Anschlagelement mit einer definierten Länge B zu verwenden und das Anschlagelement entsprechend dem geforderten Maß B auszutauschen. Fig. 3 shows one of the stops 38 in detail. The end stop 38 has a receptacle 40 and an over the length B from the exception 40 projecting stop member 42 with a frontal abutment surface. The stop member 42 has at its free end a flattening 44, via which an attacking tool can screw it into the receptacle 40 for adjusting the length B. Alternatively, it is also possible to use a stop element with a defined length B instead of a screw-stop element, and to replace the stop element according to the required dimension B.

Fig. 4 zeigt einen lastseitigen Endanschlag 46, der in einer Führungsschiene 48 des Radarms 18 angeordnet ist. Der Endanschlag 46 ist in einer festen Position in der Führungsschiene 48 über Schrauben 50 positioniert. Zum Einsetzen des Masthalters 24 in die Führungsschiene 48 kann der Endanschlag 46 entfernt werden. In der lastseitigen Endposition des Masthalters 24 liegt das freie Ende des Anschlagelements 42 an der fahrzeugseitigen Seite des Endanschlags 46 an und begrenzt somit einen weiteren Vorschub des Masthalters und somit des Hubmastes. Wird die Länge des Anschlagelements 42 vergrößert, so wird die maximale Vorschubweite des Masthalters 24 verringert und somit auch der als X1 bezeichnete Abstand. Fig. 4 shows a load-side end stop 46, which is arranged in a guide rail 48 of the Radarms 18. The end stop 46 is positioned in a fixed position in the guide rail 48 via screws 50. To insert the mast holder 24 in the guide rail 48, the end stop 46 can be removed. In the load-side end position of the mast holder 24, the free end of the stop member 42 abuts the vehicle side of the end stop 46 and thus limits further feed of the mast holder and thus the mast. If the length of the stop element 42 is increased, the maximum feed width of the mast holder 24 is reduced and thus also the distance designated as X 1 .

Bei dem erfindungsgemäß ausgestalteten Masthalter erfolgt die Anbringung des längenveränderlichen, zapfenförmigen Anschlagelements 42 nicht am Rahmen des Antriebsteils oder an den Radarmen, sondern am Masthalter 24. Hierdurch kann der Anschlag 38 bereits in der Vormontage angebracht werden und so der Montageanteil am Hauptmontageband reduziert werden. Gleichzeitig ist das Anschlagelement 42 als Drehteil ausgeführt und somit kostengünstig herstellbar. Am Rahmenprofil wird ein längenunveränderlicher Anschlagklotz 46 montiert, wodurch auch die Zugänglichkeit zu der Radlagerung und der Bremsbefestigung für ein Verfahren des Masthalters 24 verbessert wird.In the inventively designed mast holder attachment of the variable-length, peg-shaped stop member 42 is not on the frame of the drive part or on the Radarmen, but on the mast holder 24. This allows the stopper 38 are already installed in the pre-assembly and so the mounting portion on the main assembly line can be reduced. At the same time, the stop element 42 is designed as a turned part and thus inexpensive to produce. On the frame profile a non-adjustable stop block 46 is mounted, whereby the accessibility to the wheel bearing and the brake mounting for a method of the mast holder 24 is improved.

Claims (9)

Schubmaststapler (10) mit einem Antriebsteil (12), von dem sich parallel beabstandete Radarme (18) forterstrecken, und mit einem Hubmast (20), der einen entlang der Radarme (18) verfahrbaren Masthalter (24) aufweist, wobei der Masthalter (24) zwischen einer fahrzeugseitigen und einer lastseitigen Endposition verfahrbar ist
dadurch gekennzeichnet, dass
der Masthalter (24) an seiner Lastseite mindestens einen Endanschlag (38) aufweist, der mit einem an den Radarmen vorgesehenen Endanschlag (46) zusammenwirkt, wobei die Länge (B) des Endanschlags (38) in Verfahrrichtung des Masthalters (24) die lastseitige Endposition des Masthalters (24) festlegt.
Reach truck (10) having a drive part (12) from which spaced parallel Radarme (18) forterstrecken, and with a lifting mast (20) having along the Radarme (18) movable mast holder (24), wherein the mast holder (24 ) is movable between a vehicle-side and a load-side end position
characterized in that
the mast holder (24) has on its load side at least one end stop (38) which cooperates with an end stop (46) provided on the wheel arms, the length (B) of the end stop (38) in the direction of travel of the mast holder (24) the load-side end position of the mast holder (24).
Schubmaststapler nach Anspruch 1, dadurch gekennzeichnet, dass der Endanschlag (38) an dem Masthalter (24) eine Aufnahme (40) aufweist, in der ein Anschlagelement (42) angeordnet ist.Reach truck according to claim 1, characterized in that the end stop (38) on the mast holder (24) has a receptacle (40) in which a stop element (42) is arranged. Schubmaststapler nach Anspruch 2, dadurch gekennzeichnet, dass das Anschlagelement (42) in einer vorbestimmten Länge (B) aus der Aufnahme (40) vorsteht, um die lastseitige Endposition des Masthalters zu definieren.Reach truck according to claim 2, characterized in that the stop element (42) in a predetermined length (B) from the receptacle (40) protrudes to define the load-side end position of the mast holder. Schubmaststapler nach Anspruch 2, dadurch gekennzeichnet, dass das Anschlagelement (38) in seiner Länge (B) einstellbar ist, um die lastseitige Endposition des Masthalters (24) zu definieren.Reach truck according to claim 2, characterized in that the stop element (38) in its length (B) is adjustable to define the load-side end position of the mast holder (24). Schubmaststapler nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass in jedem Radarm (18) der lastseitige Endanschlag (46) in seiner Position längenunveränderlich montiert ist.Reach truck according to one of claims 1 to 4, characterized in that in each wheel arm (18) of the load-side end stop (46) is mounted in its position längenunveränderlich. Schubmaststapler nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Hubmast (20) ausgebildet ist, um unterschiedliche Anbaugeräte (26) aufzunehmen, und der lastseitig an dem Masthalter (24) vorgesehene Endanschlag (38) eine Länge (B) aufweist, die auf ein Vorbaumaß des Anbaugeräts (26) abgestimmt ist.Reach truck according to one of claims 1 to 5, characterized in that the lifting mast (20) is adapted to accommodate different attachments (26), and the load side of the mast holder (24) provided end stop (38) has a length (B), which is tuned to a Vorbaumaß the attachment (26). Schubmaststapler nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Länge (B) des lastseitigen Endanschlags (38) derart bemessen ist, dass in der lastseitigen Endposition des Schubmastes der Abstand (x1) zwischen einer fahrzeugseitigen Rückseite des Anbaugeräts (26) und einer Achse der Lasträder (22) einen vorbestimmten Abstand nicht übersteigt.Reach truck according to one of claims 1 to 6, characterized in that the length (B) of the load-side end stop (38) is dimensioned such that in the load-side end position of the reach mast the distance (x 1 ) between a vehicle-side back of the attachment (26) and an axis of the load wheels (22) does not exceed a predetermined distance. Schubmaststapler nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Radarme auf ihrer einander zugewandten Seite jeweils eine Führungsschiene (48) für den Masthalter (24) aufweisen.Reach truck according to one of claims 1 to 7, characterized in that the wheel arms each have on their side facing each other a guide rail (48) for the mast holder (24). Schubmaststapler nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass Antriebsmittel zum Verfahren des Masthalters (24) zwischen seiner fahrzeugseitigen und seine lastseitigen Endposition vorgesehen sind.Reach truck according to one of claims 1 to 8, characterized in that drive means are provided for moving the mast holder (24) between its vehicle-side and its load-side end position.
EP20120002687 2011-04-23 2012-04-18 Reach truck Active EP2514709B1 (en)

Applications Claiming Priority (1)

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DE102011018506A DE102011018506A1 (en) 2011-04-23 2011-04-23 Reach truck

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EP2514709B1 EP2514709B1 (en) 2013-05-29

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EP2857344B1 (en) 2013-10-07 2016-04-06 Hyster-Yale Group, Inc. Reach truck
WO2016043998A1 (en) 2014-09-15 2016-03-24 Crown Equipment Corporation Lift truck with optical load sensing structure
DE102014119354A1 (en) 2014-12-22 2016-06-23 Hubtex Maschinenbau Gmbh & Co. Kg Reach truck, battery change system with a reach truck and reach truck battery change system
CN106553976A (en) * 2016-11-03 2017-04-05 国网福建省电力有限公司泉州供电公司 Switch cubicle transporter
CN106429994B (en) * 2016-12-16 2018-07-17 宁波力达物流设备有限公司 The door frame automatic extending-contracting apparatus and telescopic method of electri forklift
DE102017118512A1 (en) * 2017-08-14 2019-02-14 Jungheinrich Aktiengesellschaft Reach truck
CN108163776A (en) * 2017-12-29 2018-06-15 王莉萍 A kind of pallet fork holds machine

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DE102011018506A1 (en) 2012-10-25
EP2514709B1 (en) 2013-05-29
CN102756995A (en) 2012-10-31

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