EP1244596A1 - Add-on for industrial trucks, especially lift trucks - Google Patents

Add-on for industrial trucks, especially lift trucks

Info

Publication number
EP1244596A1
EP1244596A1 EP00987085A EP00987085A EP1244596A1 EP 1244596 A1 EP1244596 A1 EP 1244596A1 EP 00987085 A EP00987085 A EP 00987085A EP 00987085 A EP00987085 A EP 00987085A EP 1244596 A1 EP1244596 A1 EP 1244596A1
Authority
EP
European Patent Office
Prior art keywords
carrier
frame
trucks
control
piston rod
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.)
Granted
Application number
EP00987085A
Other languages
German (de)
French (fr)
Other versions
EP1244596B1 (en
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
Durwen Maschinenbau GmbH
Original Assignee
Durwen Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Durwen Maschinenbau GmbH filed Critical Durwen Maschinenbau GmbH
Publication of EP1244596A1 publication Critical patent/EP1244596A1/en
Application granted granted Critical
Publication of EP1244596B1 publication Critical patent/EP1244596B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to an attachment for industrial trucks, i.e. Vehicles, in particular so-called forklift trucks, which have a device for lifting and lifting loads arranged on the front on a frame or carrier, which is equipped with holding and / or gripping devices, which are guided on telescopic guide devices and movable with the aid of hydraulic control devices and can be brought into different positions in which they can pick up, grasp, lift and transport a load.
  • industrial trucks i.e. Vehicles, in particular so-called forklift trucks, which have a device for lifting and lifting loads arranged on the front on a frame or carrier, which is equipped with holding and / or gripping devices, which are guided on telescopic guide devices and movable with the aid of hydraulic control devices and can be brought into different positions in which they can pick up, grasp, lift and transport a load.
  • SPARE BLADE SPARE BLADE (RULE 26) telescopic guides for the actual gripping or Holding elements carries.
  • the positioning of these gripping or holding elements takes place with the aid of hydraulic control devices with control cylinders and control pistons, which are arranged essentially within the guides.
  • REPLACEMENT BLA ⁇ (RULE 26) These measures are supported by a special design of the oil circuit of the hydraulic control device in such a way that the piston rod of the control piston is provided with at least two longitudinal bores for the return and return, whereby the previously common subdivision of the interior of the control cylinder by cylindrical partitions and the so associated sealing difficulties can be avoided.
  • FIG. 1 is a perspective view of the device chosen as an example in the embodiment of a so-called double pallet device for forklift trucks,
  • Fig. 2 shows a detail of the hydraulic control device for the adjustment of the fork tines in longitudinal section
  • FIG. 3 shows a section approximately along the line 3 - 3 of FIG. 2.
  • Fig. 1 an attachment for forklift trucks is shown, which has a conventional design in many parts. Telescopic guides 12, 13 for positioning are attached to a base or support part 11 to be connected to the forklift vehicle.
  • REPLACEMENT BLA ⁇ (RULE 26) tion of two pairs of prongs 14 are provided, which are attached to the free ends of the guides. Hydraulic control units, which are accommodated in the tubular guides, are usually used to adjust the fork tines.
  • the telescopic guide shown is formed by the stationary part 23, which corresponds to part 13 of FIG. 1, and the movable part 22, corresponding to part 12 of FIG. 1.
  • the tubular part 23 forms part of the base or carrier part or is fixedly connected thereto.
  • the tubular guide part 22 is displaceably mounted with the interposition of sliding bushes 221, 222. At its free end, the guide part 22 is connected to the fork tine 24.
  • the free end of the guide tube 22, which is connected to the prong 24, is closed by an end wall 224 and can therefore be used as a control cylinder of a hydraulic control device.
  • a control piston 25 which is connected via its piston rod 251 to the stationary part 23 of the guide device at 231 and can be acted upon with pressure medium from both sides.
  • the piston rod 251 has two longitudinal bores 252, 253, via which the pressure medium for tine positioning, which can be supplied at 254 or 255, can be steered to one or the other piston side in order to move the control cylinder in one direction or the other.

Landscapes

  • 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 invention relates to an add-on for industrial trucks, that is vehicles, such as in particular so-called lift trucks, that are provided on their front face with a device that picks up and lifts loads, disposed on a frame or a carrier (11). Said device comprises holding and/or gripping means that are guided on telescoped guides (12, 13) and that can be moved and brought into different positions by hydraulic control devices. In said positions, these vehicles can take up, grip, lift and transport a load. According to the invention, the control cylinder (22) of the hydraulic device is configured as a movable part of the telescoped guide and the control piston (25) is linked with the frame or the carrier (11) in a non-rotational manner via the pertaining piston rod (251). The stationary part (23) of the telescoped guide may form part of the frame or carrier and the piston rod of the control piston is provided with two longitudinal bores (252, 253) which serve as the feeding lines for feeding and returning the hydraulic medium.

Description

Anbaugerät für Flurförderzeuge, insbesondere Attachment for industrial trucks, in particular
Gabelstaplerfork-lift truck
Beschreibungdescription
Technisches GebietTechnical field
Die Erfindung betrifft ein Anbaugerät für Flurförderzeuge, d.h. Fahrzeuge, wie insbesondere sogenannte Gabelstapler, die eine an der Frontseite auf einem Rahmen oder Träger angeordnete Vorrichtung zum Aufnehmen und Anheben von Lasten besitzen, die mit Halte- und/oder Greifereinrichtungen ausgerüstet ist, die auf teleskopartigen Führungseinrichtungen geführt und mit Hilfe von hydraulischen Steuereinrichtungen bewegbar und in unterschiedliche Stellungen bringbar sind, in denen sie eine Last aufnehmen, erfassen, anheben und transportieren können.The invention relates to an attachment for industrial trucks, i.e. Vehicles, in particular so-called forklift trucks, which have a device for lifting and lifting loads arranged on the front on a frame or carrier, which is equipped with holding and / or gripping devices, which are guided on telescopic guide devices and movable with the aid of hydraulic control devices and can be brought into different positions in which they can pick up, grasp, lift and transport a load.
Stand der TechnikState of the art
Für die Ausbildung derartiger Anbaugeräte sind bereits mannigfache Vorschläge gemacht worden, was insbesondere die Positionierung der Halte- bzw. Greiferelemente angeht, die auf im wesenliσhen horizontal angeordneten Führungen verschieb- bzw. verstellbar sind, die ihrerseits mit dem Fahrzeug heb- und senkbar verbunden sind. Bei einer bekannten Vorrichtung der genannten Art (US 2.920.775) ist ein mit dem Fahrgestell heb- und senkbar verbundener Träger bzw. Rahmen vorgesehen, der horizontal sich erstreckende,Various proposals have already been made for the construction of such attachments, in particular with regard to the positioning of the holding or gripper elements, which can be displaced or adjusted on guides which are essentially horizontally arranged and which in turn are connected to the vehicle in such a way that they can be raised and lowered. In a known device of the type mentioned (US 2,920,775), a support or frame is provided which is connected to the chassis so that it can be raised and lowered, the horizontally extending,
ERSATZBLÄΓT (REGEL 26) teleskopartige Führungen für die eigentlichen Greifbzw. Halteelemente trägt. Die Positionierung dieser Greif- bzw. Halteelemente erfolgt mit Hilfe hydraulischer Steuereinrichtungen mit Steuerzylinder und Steuerkolben, die im wesentlichen innerhalb der Führungen angeordnet sind.SPARE BLADE (RULE 26) telescopic guides for the actual gripping or Holding elements carries. The positioning of these gripping or holding elements takes place with the aid of hydraulic control devices with control cylinders and control pistons, which are arranged essentially within the guides.
Diese Steuereinrichtungen für die Positionierung der Greif- bzw. Halteelemente müssen, wenn man die Abmessungen der Teile der Führungen nicht zu klobig und dadurch für den Fahrer sichtbehindemd ausbilden will, klein und damit störanfällig ausgebildet werden. Hierbei entstehen infolge der notwendigen Unterteilung des Ölkreises in Hin- und Rücklauf Abdichtprobleme. Auch die Tragfähigkeit wird beeinträchtigt.These control devices for the positioning of the gripping or holding elements, if the dimensions of the parts of the guides are not too bulky and thus want to be obstructive for the driver, must be made small and therefore prone to failure. This creates sealing problems as a result of the necessary subdivision of the oil circuit into the supply and return. The load-bearing capacity is also affected.
Darstellung der ErfindungPresentation of the invention
Diese Schwierigkeiten sollen durch die Erfindung behoben und eine Steuereinrichtung für die Positionierung der Greif- bzw. Halteelemente geschaffen werden, die auch bei robuster Ausbildung die Sichtbehinderung für den Fahrer möglichst gering hält. Dieses Problem ist bei Geräten der genannten Art, die insbesondere horizontal sich erstreckende, teleskopartige Führungen für die eigentlichen Greif- bzw. Halteelemente besitzen, in erster Linie dadurch zu lösen, daß der Steuerzylinder der hydraulischen Einrichtung als beweglicher Teil der Führungs- einrichtung ausgebildet ist, während der Steuerkolben über die zugehörige Kolbenstange mit dem Rahmen bzw. Träger und dem zugehörigen stationären Führungsteil starr verbunden ist. Wenn dann noch der stationäre, d.h. unbewegliche Teil der Führungseinrichtung einen Teil des Rahmens bzw. Trägers bildet, lassen sich die Abmessungen und damit eine mögliche Sichtbehinderung gering halten.These difficulties are to be eliminated by the invention and a control device for the positioning of the gripping or holding elements is to be created, which keeps the driver's view as low as possible even with a robust design. In the case of devices of the type mentioned, which have, in particular, horizontally extending, telescopic guides for the actual gripping or holding elements, this problem can be solved primarily by designing the control cylinder of the hydraulic device as a movable part of the guide device. while the control piston is rigidly connected to the frame or carrier and the associated stationary guide part via the associated piston rod. Then if the stationary, i.e. the immovable part of the guide device forms part of the frame or carrier, the dimensions and thus a possible visual impairment can be kept low.
ERSATZBLAπ (REGEL 26) Unterstützt werden diese Maßnahmen noch durch eine besondere Ausbildung des Ölkreislaufs der hydraulischen Steuereinrichtung in der Weise, daß die Kolbenstange des Steuerkolbens mit zumindest zwei Längsbohrungen für Hin- und Rücklauf versehen wird, wodurch die bisher übliche Unterteilung des Innenraums des Steuerzylinders durch zylindrische Zwischenwände und die damit verbundenen Abdichtschwierigkeiten vermeidbar ist.REPLACEMENT BLAπ (RULE 26) These measures are supported by a special design of the oil circuit of the hydraulic control device in such a way that the piston rod of the control piston is provided with at least two longitudinal bores for the return and return, whereby the previously common subdivision of the interior of the control cylinder by cylindrical partitions and the so associated sealing difficulties can be avoided.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung soll an Hand der Zeichnung, in der eine Ausführungsmöglichkeit eines Anbaugerätes gemäß der Erfindung mit den zum Verständnis wesentlichen Teilen schematisiert dargestellt ist, verdeutlicht werden, und zwar zeigtThe invention will be illustrated with reference to the drawing, in which an embodiment of an attachment according to the invention with the parts essential for understanding is shown schematically, namely
Fig. 1 das als Beispiel gewählte Gerät in der Ausführungsform eines sogenannten Doppelpalettengerätes für Gabelstapler in perspektivischer Darstellung,1 is a perspective view of the device chosen as an example in the embodiment of a so-called double pallet device for forklift trucks,
Fig. 2 eine Einzelheit der hydraulischen Steuereinrichtung für die Verstellung der Gabelzinken im Längsschnitt undFig. 2 shows a detail of the hydraulic control device for the adjustment of the fork tines in longitudinal section and
Fig. 3 einen Schnitt etwa nach der Linie 3 - 3 der Fig. 2.3 shows a section approximately along the line 3 - 3 of FIG. 2.
Wege zur Ausführung der ErfindungWays of Carrying Out the Invention
In Fig. 1 ist ein Anbaugerät für Gabelstapler dargestellt, welches eine in vielen Teilen herkömmliche Bauart aufweist. An einem mit dem Gabelstapler- Fahrzeug zu verbindenden Basis- bzw. Trägerteil 11 sind teleskopartige Führungen 12, 13 zur Positionie-In Fig. 1 an attachment for forklift trucks is shown, which has a conventional design in many parts. Telescopic guides 12, 13 for positioning are attached to a base or support part 11 to be connected to the forklift vehicle.
ERSATZBLAπ (REGEL 26) rung von zwei Paaren von Gabelzinken 14 vorgesehen, die an den freien Enden der Führungen befestigt sind. Zur Verstellung der Gabelzinken dienen üblicherweise hydraulische Steuereinheiten, die in den rohrformigen Führungen untergebracht sind.REPLACEMENT BLAπ (RULE 26) tion of two pairs of prongs 14 are provided, which are attached to the free ends of the guides. Hydraulic control units, which are accommodated in the tubular guides, are usually used to adjust the fork tines.
In Fig. 2 ist die hydraulische Steuereinheit, wie sie erfindungsgemäß zur Positionierung einer der Gabelzinken 14 zum Einsatz kommt, dargestellt. Die dargestellte Teleskopführung wird von dem stationären Teil 23, das dem Teil 13 der Fig. 1 entspricht, und dem beweglichen Teil 22, - entsprechend Teil 12 der Fig. 1 - gebildet. Das rohrförmige Teil 23 bildet einen Teil des Basis- bzw. Trägerteils oder ist mit diesem fest verbunden. In diesem rohrformigen Führungsteil 23 ist der rohrförmige Führungsteil 22 unter Zwischenschaltung von Gleitbuchsen 221, 222 verschiebbar gelagert. An seinem freien Ende ist der Führungsteil 22 mit der Gabelzinke 24 verbunden.2 shows the hydraulic control unit, as used according to the invention for positioning one of the fork tines 14. The telescopic guide shown is formed by the stationary part 23, which corresponds to part 13 of FIG. 1, and the movable part 22, corresponding to part 12 of FIG. 1. The tubular part 23 forms part of the base or carrier part or is fixedly connected thereto. In this tubular guide part 23, the tubular guide part 22 is displaceably mounted with the interposition of sliding bushes 221, 222. At its free end, the guide part 22 is connected to the fork tine 24.
Das freie, mit der Zinke 24 verbundene Ende des Führungsrohrs 22 ist durch eine Abschlußwand 224 verschlossen und dadurch als Steuerzylinder einer hydraulischen Steuereinrichtung verwendbar. Im Inneren dieses Steuerzylinders 22 befindet sich ein Steuerkolben 25, der über seine Kolbenstange 251 mit dem stationären Teil 23 der Führungseinrichtung bei 231 verbunden und von beiden Seiten mit Druckmittel beaufschlagbar ist. Die Kolbenstange 251 besitzt zwei Längsbohrungen 252, 253, über die das Druckmittel für die Zinkenpositionierung, das bei 254 bzw. 255 zugeführt werden kann, auf die eine oder andere Kolbenseite lenkbar ist, um den Steuerzylinder in der einen oder anderen Richtung zu bewegen.The free end of the guide tube 22, which is connected to the prong 24, is closed by an end wall 224 and can therefore be used as a control cylinder of a hydraulic control device. Inside this control cylinder 22 there is a control piston 25, which is connected via its piston rod 251 to the stationary part 23 of the guide device at 231 and can be acted upon with pressure medium from both sides. The piston rod 251 has two longitudinal bores 252, 253, via which the pressure medium for tine positioning, which can be supplied at 254 or 255, can be steered to one or the other piston side in order to move the control cylinder in one direction or the other.
ERSÄTZBLÄTT (REGEL 26) ERSÄTZBLÄTT (RULE 26)

Claims

Patentansprüche claims
1. Anbaugerät für Flurförderzeuge, d.h. Fahrzeuge, wie insbesondere sogenannte Gabelstapler, die eine an der Frontseite auf einem Rahmen bzw. Träger angeordnete Vorrichtung zum Aufnehmen und Anheben von Lasten besitzen, die mit Halte- und/oder Greifereinrichtungen ausgerüstet ist, die von teleskopartigen Führungseinrichtungen geführt und mit Hilfe von hydraulischen Steuereinrichtungen bewegbar und in unterschiedliche Stellungen bringbar sind, in denen sie eine Last aufnehmen, erfassen, anheben und transportieren können, dadurch gekennzeichet, daß der Steuerzylinder der hydraulischen Einrichtung als beweglicher Teil der teleskopartigen Führungseinrichtung ausgebildet ist, und daß sein Steuerkolben über die zugehörige Kolbenstange mit dem Rahmen bzw. Träger starr verbunden ist.1. Attachment for industrial trucks, i.e. Vehicles, in particular so-called forklift trucks, which have a device for lifting and lifting loads arranged on the front on a frame or carrier, which is equipped with holding and / or gripping devices, which are guided by telescopic guide devices and with the aid of hydraulic control devices are movable and can be brought into different positions in which they can take up, detect, lift and transport a load, characterized in that the control cylinder of the hydraulic device is designed as a movable part of the telescopic guide device, and in that its control piston is connected to the associated piston rod with the Frame or carrier is rigidly connected.
2. Anbaugerät für Flurförderzeuge, insbesondere sogenannter Gabelstapler, nach Anspruch 1, dadurch gekennzeichet, daß der unbewegliche Teil der teleskopartigen Führungseinrichtung einen Teil des Rahmens bzw. Trägers bildet.2. Attachment for industrial trucks, especially so-called forklifts, according to claim 1, characterized in that the immovable part of the telescopic guide means forms part of the frame or carrier.
3. Anbaugerät, insbesondere sogenannter Gabelstapler, nach Anspruch 1 und/oder 2, dadurch gekennzeichet, daß die Kolbenstange des Steuerkolbens mit zwei Längsbohrungen als Zuführungsleitungen für Hin- bzw. Rücklauf des Druckmittels versehen ist.3. Attachment, in particular a so-called forklift, according to claim 1 and / or 2, characterized in that the piston rod of the control piston is provided with two longitudinal bores as supply lines for the supply and return of the pressure medium.
ERSÄTZBLÄTT (REGEL 26) ERSÄTZBLÄTT (RULE 26)
EP00987085A 1999-11-09 2000-11-06 Add-on for industrial trucks, especially lift trucks Expired - Lifetime EP1244596B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19953970 1999-11-09
DE19953970A DE19953970A1 (en) 1999-11-09 1999-11-09 Attachment for industrial trucks, especially forklift trucks
PCT/DE2000/003888 WO2001034514A1 (en) 1999-11-09 2000-11-06 Add-on for industrial trucks, especially lift trucks

Publications (2)

Publication Number Publication Date
EP1244596A1 true EP1244596A1 (en) 2002-10-02
EP1244596B1 EP1244596B1 (en) 2004-07-28

Family

ID=7928489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00987085A Expired - Lifetime EP1244596B1 (en) 1999-11-09 2000-11-06 Add-on for industrial trucks, especially lift trucks

Country Status (6)

Country Link
EP (1) EP1244596B1 (en)
AT (1) ATE272023T1 (en)
DE (2) DE19953970A1 (en)
DK (1) DK1244596T3 (en)
ES (1) ES2225288T3 (en)
WO (1) WO2001034514A1 (en)

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Publication number Priority date Publication date Assignee Title
US6672823B2 (en) * 2001-09-11 2004-01-06 Cascade Corporation Fork positioner for facilitating replacement of forks on lift trucks
DE10216630C1 (en) * 2002-04-15 2003-07-24 Schulte Henke Gmbh Tool attachment for fork lift truck has interfitting guide elements allowing sliding movement of load reception elements relative to base frame and to one another
ITMO20050260A1 (en) * 2005-10-11 2007-04-12 Bolzoni Spa APPARATUS, IN PARTICULAR FOR FORKLIFT FORKS
WO2007128032A1 (en) * 2006-05-02 2007-11-15 Peter Walker Edwards Attachment for fork lift trucks
DE202010002764U1 (en) 2010-02-24 2010-06-10 Griptech Gmbh Load-carrying construction for attachment to a load carriage
DE102021116218B4 (en) 2021-06-23 2023-07-06 Schulte-Henke Gmbh Attachment for an industrial truck

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US2746630A (en) * 1952-10-16 1956-05-22 Anderson Clayton & Co Clamp for industrial trucks
US2920775A (en) * 1956-05-09 1960-01-12 Otis Elevator Co Load clamps for an industrial truck
US3245562A (en) * 1962-02-21 1966-04-12 Yale & Towne Inc Bearing arrangement for movable load engaging members on a vehicle
SE329706B (en) * 1969-06-06 1970-10-19 Bygg Och Transportekonomie Ab
DE2165605A1 (en) * 1971-12-30 1973-07-12 Kilian Kaup Kg Ges Fuer Maschi SIDE SHIFT ATTACHMENT FOR A LIFT LOADER
DE2716659A1 (en) * 1977-04-15 1978-10-19 Kaup Gmbh & Co Kg PLUNGER PISTON FOR A SIDE SHIFT
DE2716704A1 (en) * 1977-04-15 1978-10-19 Kaup Gmbh & Co Kg SIDE SHIFT FOR A LIFT LOADER
US5336039A (en) * 1993-06-14 1994-08-09 Cascade Corporation Lift truck parallel arm clamp for compatibly maximizing operator visibility and load-carrying capacity
IT1275582B1 (en) * 1995-07-21 1997-08-06 Bolzoni Spa FORK SHIFT DEVICE ON A FORKLIFT TRUCK WITH IMPROVED ACTUATOR
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Title
See references of WO0134514A1 *

Also Published As

Publication number Publication date
ES2225288T3 (en) 2005-03-16
EP1244596B1 (en) 2004-07-28
WO2001034514A1 (en) 2001-05-17
ATE272023T1 (en) 2004-08-15
DK1244596T3 (en) 2004-12-06
DE50007232D1 (en) 2004-09-02
DE19953970A1 (en) 2001-05-10

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