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EP3142957B1 - Hitch assembly, which is to be fixed on a lifting vehicle and method for actuating said hitch assembly - Google Patents

Hitch assembly, which is to be fixed on a lifting vehicle and method for actuating said hitch assembly Download PDF

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Publication number
EP3142957B1
EP3142957B1 EP15744098.3A EP15744098A EP3142957B1 EP 3142957 B1 EP3142957 B1 EP 3142957B1 EP 15744098 A EP15744098 A EP 15744098A EP 3142957 B1 EP3142957 B1 EP 3142957B1
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EP
European Patent Office
Prior art keywords
oil
fork
hydraulic piston
motors
attachment device
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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EP15744098.3A
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German (de)
French (fr)
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EP3142957A1 (en
Inventor
Otmar Kaup
Markus Unkelbach
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.)
Kaup & Co KG Gesellschaft fur Maschinenbau GmbH
Original Assignee
Kaup & Co KG Gesellschaft fur Maschinenbau GmbH
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Publication of EP3142957A1 publication Critical patent/EP3142957A1/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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices 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
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/143—Movements of forks relative to each other - symmetric
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices 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
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/144—Movements of forks relative to each other - independent
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices 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
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems

Definitions

  • the invention relates to an attachment device which is to be attached to a lifting vehicle according to the preamble of claim 1 and a method for actuating an attachment device according to the preamble of claim 9.
  • the document DE102010038663 discloses an attachment device with a movable fork tine device comprising at least two fork tines, with at least two devices for driving a lateral movement of the fork tine device.
  • the object is to provide an attachment device which avoids the disadvantages of the prior art and provides a safe and reliable attachment device.
  • an attachment device that is to be attached to a lifting vehicle, with a movable fork prong device comprising at least two fork prongs, with at least two devices for driving a lateral movement of the fork prong device, comprising an enlarged field of vision without disruptive elements, each comprising at least one drive chain , in particular set up to run in opposite directions, the drive chain being assigned to a fork prong, each with at least one oil motor by which the device is to be driven, the oil motors of two devices being able to be set up in parallel for a lateral movement of the fork prongs in the same direction / or in opposite directions for a lateral one Directional adjustment of the fork prongs, the oil motors of two devices can be set up in series connection, with one in particular in the lifting vehicle when the oil motors are connected in series arranged valve is provided for limiting the pressure built up in the oil motors, with a hydraulic limit switch for each of the oil motors being provided when the oil motors are connected in parallel, the device
  • the attachment device enables a compact and, for the driver of the lifting vehicle, a particularly clear way of working, since the attachment device has an enlarged field of vision without disruptive elements.
  • a change in the force or torque of the oil motors can be achieved.
  • the attachment device does not move with the adjustment of the fork prongs and it is therefore easy to approach a side container wall, for example.
  • a valve which is arranged in particular in the lifting vehicle, is provided to limit the pressure built up in the oil motors.
  • the device has at least one tensioning device, comprising at least one hydraulic piston, which is acted upon by oil from the oil motor to which the fork prong is assigned, by means of which the drive chain is to be kept at a predetermined tension, the device in particular having a pulley device is assigned, on which the drive chain is to be deflected and which is to be tensioned by the hydraulic piston.
  • a longitudinal transport device for the longitudinal transport of goods arranged along at least one fork prong, the longitudinal transport device in particular comprising a transport chain, wherein in particular a tensioning device with a hydraulic piston for tensioning the transport chain is provided, actuated by the oil of the oil motor, the longitudinal transport device can be switched on in particular via an electromagnetic valve.
  • the fork prong is designed to be extendable as a telescopic fork prong. By adjusting the length of the fork tines, different load depths can be achieved.
  • the hydraulic piston is a plunger cylinder, the tension of the device being held by the pressure force of the plunger cylinder and / or the hydraulic piston being a differential cylinder, the tension of the device being held by the tensile force of the differential cylinder.
  • the pressure generated in the hydraulic piston is held by a pressure holding device, in particular a check valve.
  • a preload valve is provided in front of at least one hydraulic piston, the preload valve in particular being provided in combination with a check valve.
  • the object is also achieved by a method for actuating an attachment device, which is attached to a lifting vehicle, with a movable fork prong device comprising at least two fork prongs, with at least two Devices by which a lateral movement of the fork prong device is driven, namely a drive chain in each case, with one fork prong in particular being moved by the drive chain, each with at least one oil motor by which the device is driven, with the oil motors of two for a lateral, rectified adjustment of the fork prongs Devices are connected in parallel / or for a laterally oppositely directed adjustment of the fork prongs the oil motors of two devices are connected in series, whereby when the oil motors are connected in series, a valve arranged in particular in the lifting vehicle limits the pressure built up in the oil motors and / or when the oil motors are connected in parallel a hydraulic limit switch switches off the oil motors in the end position, the oil motors being used in the opposite direction, comprising an enlarged field of vision without disturbing elements
  • a valve arranged in particular in the lifting vehicle limits the pressure built up in the oil motors and / or when the oil motors are connected in parallel, a hydraulic limit switch switches the oil motors off in the end position.
  • the drive chain is shortened by an adapted, predetermined length after a predetermined longitudinal expansion, in particular due to use.
  • Fig. 1 shows a mounting device 1, which is to be attached to a lifting vehicle, with drive chains 6 in a perspective view.
  • the attachment device 1 has, for example, two arrangements of drive chains 6, two in each case arranged next to one another and running in the same direction.
  • Holding devices 9 for a movable fork prong device 2, in particular each comprising at least one fork prong, are arranged on these double-arranged drive chains 6, as in FIG Fig. 4 shown.
  • the drive chains 6 are exemplary devices 4 for driving a lateral movement of the fork device 2, the drive chain 6 in particular each Because a fork prong, represented by its holding device 9, is assigned, each with at least one oil motor 11, by which the device 4 is to be driven, the oil motors 11 of two devices 4 being set up in parallel for a lateral movement of the fork prongs in the same direction and / or for a laterally oppositely directed adjustment of the fork prongs, the oil motors 11 of two devices 4 can be set up in series.
  • the two oil motors 11 are exemplarily used in the opposite direction of rotation with respect to one direction of rotation of the oil motor 11, whereby a very compact design is achieved.
  • the device 4 has at least one tensioning device 5, comprising at least one hydraulic piston 8, which is acted upon by oil from the oil motor 11, which is assigned to the holding device 9 of the fork prong, by which the drive chain 6 is to be kept at a predetermined tension, in particular the Device 4 is assigned a pulley device 7 on which the drive chain 6 is to be deflected and which is to be tensioned by the hydraulic piston 8.
  • the attachment device in Fig. 1 has an end, rectified position of the holding devices 9.
  • Fig. 2 shows a mounting device 1 with drive chains 6 of a device 4 in a perspective view.
  • the attachment device 1 has an opposite end position of the holding devices 9:
  • Fig. 3 shows a mounting device with drive chains in a perspective view.
  • the attachment device in Fig. 1 assigns one Fig. 1 at an opposite end stop 10 arranged end, rectified position of the holding devices 9.
  • Fig. 4 shows a mounting device 1 with drive chain 6 in plan view.
  • Fig. 4 shows an attachment device 1 with a fork prong device 2 on holding devices 9 with at least one fork prong 3.
  • a fork prong 3 has, for example, a longitudinal transport device 4, for example in the form of a toothed belt. The transport movement is achieved, for example, by the oil motor 11.

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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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Description

Die Erfindung betrifft eine Anbauvorrichtung, die an einem Hubfahrzeug anzubringen ist nach dem Oberbegriff von Anspruch 1 und ein Verfahren zur Betätigung einer Anbauvorrichtung nach dem Oberbegriff von Anspruch 9.The invention relates to an attachment device which is to be attached to a lifting vehicle according to the preamble of claim 1 and a method for actuating an attachment device according to the preamble of claim 9.

Bekannt ist es, Zylinderantriebe für Gabelzinken von Anbauvorrichtungen für Hubfahrzeuge vorzusehen, die den Nachteil aufweisen, dass sie eine große Tiefe des Bauvolumens benötigen.It is known to provide cylinder drives for the forks of attachments for lifting vehicles, which have the disadvantage that they require a great depth of the structural volume.

Das Dokument DE102010038663 offenbart eine Anbauvorrichtung mit einer beweglichen Gabelzinkeneinrichtung umfassend zumindest zwei Gabelzinken, mit zumindest zwei Einrichtungen zum Antrieb für eine seitliche Bewegung der Gabelzinkeneinrichtung.The document DE102010038663 discloses an attachment device with a movable fork tine device comprising at least two fork tines, with at least two devices for driving a lateral movement of the fork tine device.

Aufgabe ist es, eine Anbauvorrichtung bereitzustellen, die die Nachteile des Stands der Technik vermeiden und eine sichere und zuverlässige Anbauvorrichtung bereitstellen.The object is to provide an attachment device which avoids the disadvantages of the prior art and provides a safe and reliable attachment device.

Die Aufgabe wird gelöst durch eine Anbauvorrichtung, die an einem Hubfahrzeug anzubringen ist, mit einer beweglichen Gabelzinkeneinrichtung umfassend zumindest zwei Gabelzinken, mit zumindest zwei Einrichtungen zum Antrieb für eine seitliche Bewegung der Gabelzinkeneinrichtung, umfassend ein vergrößertes Sichtfeld ohne störende Elemente, umfassend jeweils zumindest eine Antriebskette, insbesondere entgegengesetzt laufend eingerichtet, wobei die Antriebskette jeweils einer Gabelzinke zugeordnet ist, mit jeweils zumindest einem Ölmotor, durch den die Einrichtung anzutreiben ist, wobei für eine seitliche gleichgerichtete Bewegung der Gabelzinken die Ölmotoren zweier Einrichtungen in Parallelschaltung einrichtbar sind /oder für eine seitliche entgegengesetzt gerichtete Verstellung der Gabelzinken die Ölmotoren zweier Einrichtungen in Reihenschaltung einrichtbar sind, wobei bei Reihenschaltung der Ölmotoren ein insbesondere im Hubfahrzeug angeordnetes Ventil zur Begrenzung des aufgebauten Drucks in den Ölmotoren vorgesehen ist, wobei bei Parallelschaltung der Ölmotoren jeweils ein hydraulischer Endschalter für die Ölmotoren vorgesehen ist,_wobei die Einrichtung zumindest eine Spanneinrichtung aufweist, umfassend mindestens einen Hydraulikkolben, der durch Öl vom Ölmotor, der der Gabelzinke zugeordnet ist, beaufschlagt ist, durch den die Antriebskette auf vorgegebener Spannung zu halten ist, wobei insbesondere der Einrichtung eine Umlenkrolleneinrichtung zugeordnet ist, auf der die Antriebskette umzulenken ist und die von dem Hydraulikkolben zu spannen ist.The object is achieved by an attachment device that is to be attached to a lifting vehicle, with a movable fork prong device comprising at least two fork prongs, with at least two devices for driving a lateral movement of the fork prong device, comprising an enlarged field of vision without disruptive elements, each comprising at least one drive chain , in particular set up to run in opposite directions, the drive chain being assigned to a fork prong, each with at least one oil motor by which the device is to be driven, the oil motors of two devices being able to be set up in parallel for a lateral movement of the fork prongs in the same direction / or in opposite directions for a lateral one Directional adjustment of the fork prongs, the oil motors of two devices can be set up in series connection, with one in particular in the lifting vehicle when the oil motors are connected in series arranged valve is provided for limiting the pressure built up in the oil motors, with a hydraulic limit switch for each of the oil motors being provided when the oil motors are connected in parallel, the device having at least one tensioning device, comprising at least one hydraulic piston, which is driven by oil from the oil motor, the fork prong is assigned, is acted upon, by means of which the drive chain is to be kept at a predetermined tension, wherein in particular the device is assigned a deflection roller device on which the drive chain is to be deflected and which is to be tensioned by the hydraulic piston.

Die Anbauvorrichtung ermöglicht eine kompakte und für den Fahrer des Hubfahrzeugs besonders übersichtliche Arbeitsweise, da die Anbauvorrichtung ein vergrößertes Sichtfeld ohne störende Elemente aufweist. Zudem kann je nach Schaltung der Ölmotoren eine Veränderung der Kraft bzw. des Drehmoments der Ölmotoren erreicht werden. Die Anbauvorrichtung bewegt sich bei der Verstellung der Gabelzinken nicht mit und es ist somit ein Nahes Anfahren beispielsweise einer seitlichen Containerwand einfach möglich.The attachment device enables a compact and, for the driver of the lifting vehicle, a particularly clear way of working, since the attachment device has an enlarged field of vision without disruptive elements. In addition, depending on the circuit of the oil motors, a change in the force or torque of the oil motors can be achieved. The attachment device does not move with the adjustment of the fork prongs and it is therefore easy to approach a side container wall, for example.

Vorteilhaft ist es, wenn bei Reihenschaltung der Ölmotoren ein insbesondere im Hubfahrzeug angeordnetes Ventil zur Begrenzung des aufgebauten Drucks in den Ölmotoren vorgesehen ist.It is advantageous if, when the oil motors are connected in series, a valve, which is arranged in particular in the lifting vehicle, is provided to limit the pressure built up in the oil motors.

Vorteilhaft ist es, wenn bei Parallelschaltung der Ölmotoren jeweils ein hydraulischer Endschalter für die Ölmotoren vorgesehen ist.It is advantageous if, when the oil motors are connected in parallel, a hydraulic limit switch is provided for each of the oil motors.

Vorteilhaft ist es, wenn die Ölmotoren in entgegengesetzter Laufrichtung eingesetzt sind, da durch die umgekehrte Anordnung hinsichtlich der Drehrichtung des Motors eine sehr kompakte und platzsparende Bauform erreichbar ist.It is advantageous if the oil motors are used in the opposite direction of rotation, since a very compact and space-saving design can be achieved through the reversed arrangement with regard to the direction of rotation of the motor.

Vorteilhaft ist es, wenn die Einrichtung zumindest eine Spanneinrichtung aufweist, umfassend mindestens einen Hydraulikkolben, der durch Öl vom Ölmotor, der der Gabelzinke zugeordnet ist, beaufschlagt ist, durch den die Antriebskette auf vorgegebener Spannung zu halten ist, wobei insbesondere der Einrichtung eine Umlenkrolleneinrichtung zugeordnet ist, auf der die Antriebskette umzulenken ist und die von dem Hydraulikkolben zu spannen ist.It is advantageous if the device has at least one tensioning device, comprising at least one hydraulic piston, which is acted upon by oil from the oil motor to which the fork prong is assigned, by means of which the drive chain is to be kept at a predetermined tension, the device in particular having a pulley device is assigned, on which the drive chain is to be deflected and which is to be tensioned by the hydraulic piston.

Vorteilhaft ist es, wenn eine Längstransporteinrichtung zum Längstransport von Waren angeordnet entlang zumindest einer Gabelzinke vorgesehen ist, wobei die Längstransporteinrichtung insbesondere eine Transportkette umfasst, wobei insbesondere eine Spannvorrichtung mit einem Hydraulikkolben zum Spannen der Transportkette betätigt durch das Öl des Ölmotors vorgesehen ist, wobei die Längstransporteinrichtung insbesondere über ein Elektromagnetventil zuschaltbar ist.It is advantageous if a longitudinal transport device is provided for the longitudinal transport of goods arranged along at least one fork prong, the longitudinal transport device in particular comprising a transport chain, wherein in particular a tensioning device with a hydraulic piston for tensioning the transport chain is provided, actuated by the oil of the oil motor, the longitudinal transport device can be switched on in particular via an electromagnetic valve.

Vorteilhaft ist es, wenn die Gabelzinke als Teleskopgabelzinke ausfahrbar ausgestaltet ist. Durch die Längenverstellung der Gabelzinke können unterschiedliche Lasttiefen erreicht werden.It is advantageous if the fork prong is designed to be extendable as a telescopic fork prong. By adjusting the length of the fork tines, different load depths can be achieved.

Vorteilhaft ist es, wenn der Hydraulikkolben ein Plungerzylinder ist, wobei die Spannung der Einrichtung durch Druckkraft des Plungerzylinders zu halten ist und/oder der Hydraulikkolben ein Differentialzylinder ist, wobei die Spannung der Einrichtung durch Zugkraft des Differentialzylinders zu halten ist.It is advantageous if the hydraulic piston is a plunger cylinder, the tension of the device being held by the pressure force of the plunger cylinder and / or the hydraulic piston being a differential cylinder, the tension of the device being held by the tensile force of the differential cylinder.

Vorteilhaft ist es, wenn der in dem Hydraulikkolben erzeugte Druck durch eine Druckhalteeinrichtung, insbesondere ein Rückschlagventil, gehalten ist.It is advantageous if the pressure generated in the hydraulic piston is held by a pressure holding device, in particular a check valve.

Vorteilhaft ist es, wenn ein Vorspannventil vor zumindest einem Hydraulikkolben vorgesehen ist, wobei insbesondere das Vorspannventil in Kombination mit einem Rückschlagventil vorgesehen ist.It is advantageous if a preload valve is provided in front of at least one hydraulic piston, the preload valve in particular being provided in combination with a check valve.

Vorteilhaft ist es, wenn ein Druckbegrenzungsventil vorgesehen ist, über das Öl aus dem Hydraulikkolben entweichen kann, insbesondere im Fall eine Havarie.It is advantageous if a pressure limiting valve is provided through which oil can escape from the hydraulic piston, especially in the event of an accident.

Die Aufgabe wird ebenfalls gelöst durch ein Verfahren zur Betätigung einer Anbauvorrichtung, die an einem Hubfahrzeug angebracht ist, mit einer beweglichen Gabelzinkeneinrichtung umfassend zumindest zwei Gabelzinken, mit zumindest zwei Einrichtungen, durch die eine seitliche Bewegung der Gabelzinkeneinrichtung angetrieben wird, nämlich jeweils einer Antriebskette, wobei durch die Antriebskette insbesondere jeweils eine Gabelzinke bewegt wird, mit jeweils zumindest einem Ölmotor, durch den die Einrichtung angetrieben wird, wobei für eine seitliche gleichgerichtete Gabelzinkenverstellung die Ölmotoren zweier Einrichtungen in Parallelschaltung geschaltet werden /oder für eine seitliche entgegengesetzt gerichtete Verstellung der Gabelzinken die Ölmotoren zweier Einrichtungen in Reihenschaltung geschaltet werden, wobei bei Reihenschaltung der Ölmotoren ein insbesondere im Hubfahrzeug angeordnetes Ventil den aufgebauten Druck in den Ölmotoren begrenzt und/oder bei Parallelschaltung der Ölmotoren jeweils ein hydraulischer Endschalter die Ölmotoren in Endstellung ausschaltet, wobei die Ölmotoren in entgegengesetzter Laufrichtung eingesetzt werden, umfassend ein vergrößertes Sichtfeld ohne störende Elemente. The object is also achieved by a method for actuating an attachment device, which is attached to a lifting vehicle, with a movable fork prong device comprising at least two fork prongs, with at least two Devices by which a lateral movement of the fork prong device is driven, namely a drive chain in each case, with one fork prong in particular being moved by the drive chain, each with at least one oil motor by which the device is driven, with the oil motors of two for a lateral, rectified adjustment of the fork prongs Devices are connected in parallel / or for a laterally oppositely directed adjustment of the fork prongs the oil motors of two devices are connected in series, whereby when the oil motors are connected in series, a valve arranged in particular in the lifting vehicle limits the pressure built up in the oil motors and / or when the oil motors are connected in parallel a hydraulic limit switch switches off the oil motors in the end position, the oil motors being used in the opposite direction, comprising an enlarged field of vision without disturbing elements.

Vorteilhaft ist es, wenn bei Reihenschaltung der Ölmotoren ein insbesondere im Hubfahrzeug angeordnetes Ventil den aufgebauten Druck in den Ölmotoren begrenzt und/oder bei Parallelschaltung der Ölmotoren jeweils ein hydraulischer Endschalter die Ölmotoren in Endstellung ausschaltet.It is advantageous if, when the oil motors are connected in series, a valve arranged in particular in the lifting vehicle limits the pressure built up in the oil motors and / or when the oil motors are connected in parallel, a hydraulic limit switch switches the oil motors off in the end position.

Vorteilhaft ist es, wenn die Ölmotoren in entgegengesetzter Laufrichtung eingesetzt werden.It is advantageous if the oil motors are used in opposite directions.

Vorteilhaft ist es, wenn die Antriebskette nach einer vorgegebenen Längsdehnung, insbesondere aufgrund des Gebrauchs, um eine angepasst vorgegebene Länge gekürzt wird.It is advantageous if the drive chain is shortened by an adapted, predetermined length after a predetermined longitudinal expansion, in particular due to use.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachstehenden Beschreibung, in der Ausführungsbeispiele des Gegenstands der Erfindung in Verbindung mit den Zeichnungen näher erläutert sind-Further features and advantages of the invention emerge from the claims and the following description, in which exemplary embodiments of the subject matter of the invention are explained in more detail in conjunction with the drawings.

Es zeigen:

Fig. 1
eine Anbauvorrichtung mit Antriebsketten in perspektivischer Ansicht,
Fig. 2
eine Anbauvorrichtung mit Antriebsketten in perspektivischer Ansicht,
Fig. 3
eine Anbauvorrichtung mit Antriebsketten in perspektivischer Ansicht und
Fig. 4
eine Anbauvorrichtung mit Antriebskette in Aufsicht.
Show it:
Fig. 1
a mounting device with drive chains in perspective view,
Fig. 2
a mounting device with drive chains in perspective view,
Fig. 3
a mounting device with drive chains in a perspective view and
Fig. 4
a mounting device with drive chain in plan.

Fig. 1 zeigt eine Anbauvorrichtung 1, die an einem Hubfahrzeug anzubringen ist, mit Antriebsketten 6 in perspektivischer Ansicht. Die Anbauvorrichtung 1 weist beispielhaft zwei Anordnungen von Antriebsketten 6, jeweils zwei nebeneinander angeordnet und gleichlaufend, auf. An diesen doppelt angeordneten Antriebsketten 6 sind Haltevorrichtungen 9 für eine bewegliche Gabelzinkeneinrichtung 2, insbesondere umfassend jeweils mindestens eine Gabelzinke angeordnet, wie in Fig. 4 dargestellt. Die Antriebsketten 6 sind bespielhafte Einrichtungen 4 zum Antrieb für eine seitliche Bewegung der Gabelzinkeneinrichtung 2, wobei die Antriebskette 6 insbesondere je weils einer Gabelzinke, dargestellt durch deren Haltevorrichtung 9, zugeordnet ist, mit jeweils zumindest einem Ölmotor 11, durch den die Einrichtung 4 anzutreiben ist, wobei für eine seitliche gleichgerichtete Bewegung der Gabelzinken die Ölmotoren 11 zweier Einrichtungen 4 in Parallelschaltung einrichtbar sind und/oder für eine seitliche entgegengesetzt gerichtete Verstellung der Gabelzinken die Ölmotoren 11 zweier Einrichtungen 4 in Reihenschaltung einrichtbar sind. Die beiden Ölmotoren 11 sind bespielhaft in entgegengesetzter Laufrichtung hinsichtlich einer Drehrichtung des Ölmotors 11 eingesetzt, wodurch eine sehr kompakter Bauform erreicht wird. Fig. 1 shows a mounting device 1, which is to be attached to a lifting vehicle, with drive chains 6 in a perspective view. The attachment device 1 has, for example, two arrangements of drive chains 6, two in each case arranged next to one another and running in the same direction. Holding devices 9 for a movable fork prong device 2, in particular each comprising at least one fork prong, are arranged on these double-arranged drive chains 6, as in FIG Fig. 4 shown. The drive chains 6 are exemplary devices 4 for driving a lateral movement of the fork device 2, the drive chain 6 in particular each Because a fork prong, represented by its holding device 9, is assigned, each with at least one oil motor 11, by which the device 4 is to be driven, the oil motors 11 of two devices 4 being set up in parallel for a lateral movement of the fork prongs in the same direction and / or for a laterally oppositely directed adjustment of the fork prongs, the oil motors 11 of two devices 4 can be set up in series. The two oil motors 11 are exemplarily used in the opposite direction of rotation with respect to one direction of rotation of the oil motor 11, whereby a very compact design is achieved.

Die Einrichtung 4 weist zumindest eine Spanneinrichtung 5 auf, umfassend mindestens einen Hydraulikkolben 8, der durch Öl vom Ölmotor 11, der der Haltevorrichtung 9 der Gabelzinke zugeordnet ist, beaufschlagt ist, durch den die Antriebskette 6 auf vorgegebener Spannung zu halten ist, wobei insbesondere der Einrichtung 4 eine Umlenkrolleneinrichtung 7 zugeordnet ist, auf der die Antriebskette 6 umzulenken ist und die von dem Hydraulikkolben 8 zu spannen ist.The device 4 has at least one tensioning device 5, comprising at least one hydraulic piston 8, which is acted upon by oil from the oil motor 11, which is assigned to the holding device 9 of the fork prong, by which the drive chain 6 is to be kept at a predetermined tension, in particular the Device 4 is assigned a pulley device 7 on which the drive chain 6 is to be deflected and which is to be tensioned by the hydraulic piston 8.

Die Anbauvorrichtung in Fig. 1 weist eine endseitige, gleichgerichtete Position der Haltevorrichtungen 9 auf.The attachment device in Fig. 1 has an end, rectified position of the holding devices 9.

Fig. 2 zeigt eine Anbauvorrichtung 1 mit Antriebsketten 6 einer Einrichtung 4 in perspektivischer Ansicht. Die Anbauvorrichtung 1 weist eine endseitige, entgegengesetzte Position der Haltevorrichtungen 9 auf: Fig. 2 shows a mounting device 1 with drive chains 6 of a device 4 in a perspective view. The attachment device 1 has an opposite end position of the holding devices 9:

Fig. 3 zeigt eine Anbauvorrichtung mit Antriebsketten in perspektivischer Ansicht. Die Anbauvorrichtung in Fig. 1 weist eine zu Fig. 1 an einem entgegengesetzten Endanschlag 10 angeordnete endseitige, gleichgerichtete Position der Haltevorrichtungen 9 auf. Fig. 3 shows a mounting device with drive chains in a perspective view. The attachment device in Fig. 1 assigns one Fig. 1 at an opposite end stop 10 arranged end, rectified position of the holding devices 9.

Fig. 4 zeigt eine Anbauvorrichtung 1 mit Antriebskette 6 in Aufsicht. Fig. 4 zeigt eine Anbauvorrichtung 1 mit einer Gabelzinkeneinrichtung 2 an Haltevorrichtungen 9 mit zumindest einer Gabelzinke 3. Eine Gabelzinke 3 weist beispielhaft eine Längstransporteinrichtung 4 beispielhaft in Form eines Zahnriemens auf. Die Transportbewegung wird beispielhaft durch den Ölmotor 11 erreicht. Fig. 4 shows a mounting device 1 with drive chain 6 in plan view. Fig. 4 shows an attachment device 1 with a fork prong device 2 on holding devices 9 with at least one fork prong 3. A fork prong 3 has, for example, a longitudinal transport device 4, for example in the form of a toothed belt. The transport movement is achieved, for example, by the oil motor 11.

BEZUGSZEICHENLISTEREFERENCE LIST

11
AnbauvorrichtungAttachment device
22
GabelzinkeneinrichtungFork device
33
GabelzinkeFork prong
44th
EinrichtungFacility
55
SpanneinrichtungClamping device
66th
AntriebsketteDrive chain
77th
UmlenkrolleneinrichtungPulley device
88th
HydraulikkolbenHydraulic piston
99
HaltevorrichtungHolding device
1010
EndanschlagEnd stop
1111th
ÖlmotorOil engine
1212th
LängstransporteinrichtungLongitudinal transport device

Claims (10)

  1. Attachment device (1) which is to be attached to a lifting vehicle, with a movable fork-toe device (2) comprising at least two forks (3), with at least two devices (4) to drive a lateral movement of the fork-toe device (2), comprising an enlarged field of vision without disturbing elements, each comprising at least one drive chain (6), in particular arranged for opposite movement, with the drive chain is assigned to a fork (3) respectively each arranged with at least one oil motor (11) by which the device is to be driven, the attachment being arranged in such a way that for a lateral rectified movement of the forks (3) the oil motors (11) of two units (4) can be set up in parallel connection or for a lateral counter-directional adjustment of the forks (3) the oil motors (11) of two units (4) can be set up in in series connection, in the case of series connection of the oil engines (11), a valve is specially arranged in the forklift vehicle to limit the built-up pressure in the oil engines (11), whereas in the case of parallel oil engines (11) a hydraulic limit switch respectively is intended for oil engines (11), the device (4) having at least one tensioning device (5), comprising at least one hydraulic piston (8), powered by oil from the oil engine (11) attached to the fork (3), which keeps the drive chain (6) at the specified tension, in particular the device (4) having a pulley device (7) on which the drive chain (6) is to be deflected and which is to be clamped by the hydraulic piston (8).
  2. Attachment device according to claim 1, characterised by the fact that the oil engines (11) are operated in the opposite direction.
  3. Attachment device according to one of claims 1 to 2, characterised by the provision of a longitudinal transport device for the longitudinal transport of goods arranged along at least one fork tine (3), the longitudinal transport device comprising in particular a transport chain, in particular a clamping device (5) with a hydraulic piston (8) for clamping the transport chain, operated in particular by the oil of the oil motor (11), whereby the longitudinal transmission device can be switched in particular by means of an electromagnetic valve.
  4. Attachment device according to one of claims 1 to 3, characterised by the extension of the fork tine (3) as a telescopic fork.
  5. Attachment device according to any of claims 1 to 4, characterised by the hydraulic piston (8) being a plunger cylinder, the tension of the device (4) being maintained by the compressive force of the plunger cylinder and/or the hydraulic piston (8) being a differential cylinder, the tension of the device (4) being maintained by the tensile force of the differential cylinder.
  6. Attachment device according to any of claims 1 to 5, characterised by the pressure generated in the hydraulic piston (8) being held by a pressure-retaining device, in particular a non-return valve.
  7. Attachment device according to one of claims 1 to 6, characterised by the provision of a pre-tensioning valve in front of at least one hydraulic piston (8), in particular the pre-tensioning valve in combination with a non-return valve.
  8. Attachment device according to one of the claims 1 to 7, characterized in that a pressure relief valve is provided, via which oil can escape from the hydraulic piston (8), in particular in the event of an average.
  9. Method for actuating an attachment device (1), according to one of the claims 1 to 8, which is to be attached to a lifting vehicle, with a movable fork-toe device (2) comprising at least two forks (3), with at least two devices (4) by which a lateral movement of the fork apparatus (2) is driven, namely each comprising at least one driving chain (6), wherein the said driving chain is in particular driving one fork (3) respectively, wherein for a lateral rectified movement of the forks the oil motors of two devices are arranged in a parallel connection or for a lateral oppositely directed adjustment of the forks the oil motors of two devices are arranged in a series connection,
    whereas in series connection of the oil motors (11) a valve arranged in particular in the lifting vehicle limits the built-up pressure in the oil motors (11) and/or in a parallel connection of the oil motors (11) a hydraulic limit switch respectively switches off the oil motors (11) in the end position, whereas in that the oil motors (11) are arranged in opposite direction comprising an enlarged field of vision without disturbing elements.
  10. Method according to claim 9, characterized in that the driving chain (8) after a predetermined longitudinal elongation, especially due to use, is shortened by an adapted predetermined length.
EP15744098.3A 2014-05-14 2015-05-14 Hitch assembly, which is to be fixed on a lifting vehicle and method for actuating said hitch assembly Active EP3142957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014006970.2A DE102014006970A1 (en) 2014-05-14 2014-05-14 Hitch to be attached to a lift truck and method of operating a hitch
PCT/DE2015/000232 WO2015172763A1 (en) 2014-05-14 2015-05-14 Add-on device to be attached to a lifting vehicle, and method for actuating said add-on device

Publications (2)

Publication Number Publication Date
EP3142957A1 EP3142957A1 (en) 2017-03-22
EP3142957B1 true EP3142957B1 (en) 2021-11-17

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ID=53761155

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EP15744098.3A Active EP3142957B1 (en) 2014-05-14 2015-05-14 Hitch assembly, which is to be fixed on a lifting vehicle and method for actuating said hitch assembly

Country Status (6)

Country Link
US (1) US10179724B2 (en)
EP (1) EP3142957B1 (en)
JP (1) JP6657119B2 (en)
CN (1) CN106660768B (en)
DE (2) DE102014006970A1 (en)
WO (1) WO2015172763A1 (en)

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US12006197B1 (en) * 2019-04-07 2024-06-11 Rightline Equipment, Inc. Load handler for lift truck with segmented channel bearings, wing gussets, padded slave fork stops and backrest guards
CN111170230B (en) * 2020-03-02 2024-09-20 合肥搬易通科技发展有限公司 Pitch-adjusting and side-shifting accessory realized by double motors

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Also Published As

Publication number Publication date
CN106660768A (en) 2017-05-10
US20170183209A1 (en) 2017-06-29
WO2015172763A1 (en) 2015-11-19
EP3142957A1 (en) 2017-03-22
DE112015002214A5 (en) 2017-02-09
JP6657119B2 (en) 2020-03-04
DE102014006970A1 (en) 2015-11-19
US10179724B2 (en) 2019-01-15
CN106660768B (en) 2019-12-10
JP2017515769A (en) 2017-06-15

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