EP1244596B1 - Add-on for industrial trucks, especially lift trucks - Google Patents

Add-on for industrial trucks, especially lift trucks Download PDF

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Publication number
EP1244596B1
EP1244596B1 EP00987085A EP00987085A EP1244596B1 EP 1244596 B1 EP1244596 B1 EP 1244596B1 EP 00987085 A EP00987085 A EP 00987085A EP 00987085 A EP00987085 A EP 00987085A EP 1244596 B1 EP1244596 B1 EP 1244596B1
Authority
EP
European Patent Office
Prior art keywords
frame
trucks
add
lift
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.)
Expired - Lifetime
Application number
EP00987085A
Other languages
German (de)
French (fr)
Other versions
EP1244596A1 (en
Inventor
Klaus Durwen
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

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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

Definitions

  • the invention relates to a Industrial trucks, with an attachment, i. Vehicles, in particular So-called forklifts, where the truck is one on the front arranged on a frame or support device for picking up and lifting loads that with Holding and / or gripping devices is equipped, which guided on telescopic guide means and with the help of hydraulic control devices movable and can be brought into different positions are where they pick up a load, capture, lift and transport.
  • an attachment i. Vehicles, in particular So-called forklifts
  • the truck is one on the front arranged on a frame or support device for picking up and lifting loads that with Holding and / or gripping devices is equipped, which guided on telescopic guide means and with the help of hydraulic control devices movable and can be brought into different positions are where they pick up a load, capture, lift and transport.
  • Fig. 1 is an attachment for forklifts shown, which in many parts conventional Design has.
  • base or support member 11th At one with the forklift vehicle to be connected base or support member 11th are telescopic guides 12, 13 for positioning provided by two pairs of forks 14, which are attached to the free ends of the guides.
  • To adjust the forks usually serve hydraulic control units operating in the tubular Guided tours are housed.
  • the hydraulic control unit, as according to the invention for positioning one of Forks 14 is used, shown.
  • the shown telescopic guide is from the stationary Part 23, which corresponds to the part 13 of FIG. 1, and the movable part 22, - corresponding to part 12 of the Fig. 1 - formed.
  • the tubular part 23 forms a part of the base or support part or is with this firmly connected.
  • the tubular guide part 22 is under Interposition of sliding bushes 221, 222 slidably stored. At its free end is the guide part 22 connected to the fork tine 24.
  • the free end of the tycoon 24 Guide tube 22 is closed by a closure wall 224 and thereby as a control cylinder of a hydraulic Control device usable.
  • a control piston 25 via its piston rod 251 with the stationary part 23 of the guide device at 231 connected and from both sides with pressure medium can be acted upon.
  • the piston rod 251 has two Longitudinal bores 252, 253, via which the pressure medium for the tine positioning supplied at 254 and 255, respectively can be on one or the other piston side is steerable to the control cylinder in one or to move in another direction.

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

Technischen GebietTechnical field

Die Erfindung betrifft ein Flurförderzeuge, mit einem Anbaugerät d.h. Fahrzeuge, wie insbesondere sogenannte Gabelstapler, wobei das Flurförderzeug eine an der Frontseite auf einem Rahmen oder Träger angeordnete Vorrichtung zum Aufnehmen und Anheben von Lasten besitzt, 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 a Industrial trucks, with an attachment, i. Vehicles, in particular So-called forklifts, where the truck is one on the front arranged on a frame or support device for picking up and lifting loads that with Holding and / or gripping devices is equipped, which guided on telescopic guide means and with the help of hydraulic control devices movable and can be brought into different positions are where they pick up a load, capture, lift and transport.

Ein derartiges Anbaugerät ist aus der US-A-2,920,775 bekannt.Such an attachment is known from US-A-2,920,775.

Stand der TechnikState of the art

Für die Ausbildung derartiger Flurförderzeuge mit einem Anbaugeräte sind bereits mannigfache Vorschläge gemacht worden, was insbesondere die Positionierung der Halte- bzw. Greiferelemente angeht, die auf im wesenlichen 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, Führungen für die eigentlichen Greif- bzw. 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.For the training of such trucks with an attachment are already manifold suggestions have been made, what in particular the positioning of the holding or gripper elements that is in essence horizontal arranged guides displaced or adjustable are, in turn, with the vehicle raised and lowered are connected. In a known device of mentioned type (US 2,920,775) is one with the Chassis raised and lowered connected carrier or Frame, which extends horizontally, Guides for the actual gripping or holding elements wearing. The positioning of this gripping or Retaining elements by means of hydraulic control devices with control cylinder and spool, the arranged substantially within the guides are.

Die Steuer- und Führungseinrichtungen für die Positionierung der Greif- bzw. Halteelemente müssen, wenn man die Sichtbehinderung für den Fahrer gering halten will, in ihren Abmessungen nicht zu klobig und also klein und damit störanfällig ausgebildet werden. Dadurch entstehen infolge der notwendigen Unterteilung des Ölkreises in Hin- und Rücklauf Abdichtprobleme. Auch die Tragfähigkeit wird beeinträchtigt.The tax and management facilities for the Positioning of the gripping or holding elements must, if one lowers the visibility obstruction for the driver want to keep in their dimensions not too chunky and so be small and thus prone to failure trained. This results from the necessary subdivision the oil circuit in return flow sealing problems. The load 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 mit insbesondere horizontal sich erstreckenden Führungen für die eigentlichen Greif- bzw. Halteelemente in erster Linie dadurch zu lösen, daß man bei teleskopförmiger Ausbildung der Führungseinrichtung deren beweglichen Teil in Verbindung mit einem in seinem Innern angeordneten Steuerkolben als Steuerzylinder einer hydraulischen Steuereinrichtung ausgebildet, deren Steuerkolben über die zugehörige Kolbenstange mit dem Rahmen bzw. Träger und dem zugehörigen stationären Führungsteil starr verbunden ist, der einen Teil des Rahmens bzw. Trägers bilden sollte, um Abmessungen und damit eine mögliche Sichtbehinderung gering halten. These difficulties are to be solved by the invention fixed and a control device for positioning the gripping or holding elements created who, even with robust training, obstruct the vision keeps as low as possible for the driver. This Problem is with devices of the type mentioned in particular horizontally extending guides for the actual gripping or holding elements in the first Line solve by one that when teleskopörmiger Training of the management device whose movable Part in conjunction with one arranged in its interior Control piston as a control cylinder one formed hydraulic control device whose Control piston via the associated piston rod with the Frame or support and the associated stationary Guide member is rigidly connected, which is part of the Frame or support should form to dimensions and thus keeping a possible visual obstruction low.

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.These measures are still supported by a special training of the oil circulation of hydraulic control device in such a way that the Piston rod of the control piston with at least two Longitudinal bores are provided for return flow, whereby the hitherto usual subdivision of the interior of the control cylinder by cylindrical partitions and the associated sealing difficulties is avoidable.

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 zeigt

Fig. 1
das als Beispiel gewählte Gerät in der Ausführungsform eines sogenannten Doppelpalettengerätes für Gabelstapler in perspektivischer Darstellung,
Fig. 2
eine Einzelheit der hydraulischen Steuereinrichtung für die Verstellung der Gabelzinken im Längsschnitt und
Fig. 3
einen Schnitt etwa nach der Linie 3 - 3 der Fig. 2.
The invention will be with reference to the drawing, in which an embodiment of an attachment according to the invention is shown schematically with the essential parts for understanding, be clarified, and indeed shows
Fig. 1
the device chosen as an example in the embodiment of a so-called double pallet device for forklift in perspective view,
Fig. 2
a detail of the hydraulic control device for the adjustment of the forks in longitudinal section and
Fig. 3
a section approximately along the line 3 - 3 of FIG. 2.

Wege zur Ausführung der ErfindungWays to carry 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 Positionierung 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 rohrförmigen Führungen untergebracht sind.In Fig. 1 is an attachment for forklifts shown, which in many parts conventional Design has. At one with the forklift vehicle to be connected base or support member 11th are telescopic guides 12, 13 for positioning provided by two pairs of forks 14, which are attached to the free ends of the guides. To adjust the forks usually serve hydraulic control units operating in the tubular Guided tours are housed.

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 rohrförmigen 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, the hydraulic control unit, as according to the invention for positioning one of Forks 14 is used, shown. The shown telescopic guide is from the stationary Part 23, which corresponds to the part 13 of FIG. 1, and the movable part 22, - corresponding to part 12 of the Fig. 1 - formed. The tubular part 23 forms a part of the base or support part or is with this firmly connected. In this tubular guide part 23, the tubular guide part 22 is under Interposition of sliding bushes 221, 222 slidably stored. At its free end is the guide part 22 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 tycoon 24 Guide tube 22 is closed by a closure wall 224 and thereby as a control cylinder of a hydraulic Control device usable. Inside this Control cylinder 22 is a control piston 25, via its piston rod 251 with the stationary part 23 of the guide device at 231 connected and from both sides with pressure medium can be acted upon. The piston rod 251 has two Longitudinal bores 252, 253, via which the pressure medium for the tine positioning supplied at 254 and 255, respectively can be on one or the other piston side is steerable to the control cylinder in one or to move in another direction.

Claims (2)

  1. Industrial truck with an add-on, i.e. vehicle such as especially so-called lift truck, the industrial truck possessing a device, arranged on the front side on a frame or support to take up and lift loads, which is equipped with holding and/or gripping appliances (14), which are guided by guiding devices (23, 13, 22, 12) and can be moved with the aid of hydraulic control mechanisms (25) and brought into different positions in which they are able to take up, take hold of, lift and transport a load, characterised in that, the guiding device (12, 13) being telescopic in design, its moving part (12/22), in combination with an actuating piston (25) arranged in its interior, forms the control cylinder of an hydraulic control mechanism, whose actuating piston (25) is rigidly connected via the appurtenant piston rod (251) to the frame or support (11).
  2. Industrial truck with an add-on, especially so-called lift truck, according to claim 1, characterised in that the piston rod (251) of the actuating piston (25) is provided with two longitudinal bores (252, 253) as conduits for the supply and return of the pressure medium.
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 EP1244596A1 (en) 2002-10-02
EP1244596B1 true EP1244596B1 (en) 2004-07-28

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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

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010002764U1 (en) 2010-02-24 2010-06-10 Griptech Gmbh Load-carrying construction for attachment to a load carriage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
DE102021116218B4 (en) 2021-06-23 2023-07-06 Schulte-Henke Gmbh Attachment for an industrial truck

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2716704A1 (en) * 1977-04-15 1978-10-19 Kaup Gmbh & Co Kg SIDE SHIFT FOR A LIFT LOADER
DE2716659A1 (en) * 1977-04-15 1978-10-19 Kaup Gmbh & Co Kg PLUNGER PISTON FOR A SIDE SHIFT
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
IT245360Y1 (en) * 1998-04-10 2002-03-20 Roncari Srl PERFECT MACHINES FOR ADJUSTING THE HORIZONTAL INTERAXIS EQUIPMENT FOR FORKLIFT TRUCKS OR SIMILAR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010002764U1 (en) 2010-02-24 2010-06-10 Griptech Gmbh Load-carrying construction for attachment to a load carriage

Also Published As

Publication number Publication date
WO2001034514A1 (en) 2001-05-17
ATE272023T1 (en) 2004-08-15
DE50007232D1 (en) 2004-09-02
DE19953970A1 (en) 2001-05-10
DK1244596T3 (en) 2004-12-06
EP1244596A1 (en) 2002-10-02
ES2225288T3 (en) 2005-03-16

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