EP0128402B1 - Side-loading fork-lift truck - Google Patents

Side-loading fork-lift truck Download PDF

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Publication number
EP0128402B1
EP0128402B1 EP84105765A EP84105765A EP0128402B1 EP 0128402 B1 EP0128402 B1 EP 0128402B1 EP 84105765 A EP84105765 A EP 84105765A EP 84105765 A EP84105765 A EP 84105765A EP 0128402 B1 EP0128402 B1 EP 0128402B1
Authority
EP
European Patent Office
Prior art keywords
transversal
lift truck
lift
mast
push
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
Application number
EP84105765A
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German (de)
French (fr)
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EP0128402A1 (en
Inventor
Walter Schüssler
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.)
KALMAR IRION VIERWEGE- UND QUERSTAPLER GMBH
Original Assignee
Kalmar Irion Vierwege- und Querstapler 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 Kalmar Irion Vierwege- und Querstapler GmbH filed Critical Kalmar Irion Vierwege- und Querstapler GmbH
Priority to AT84105765T priority Critical patent/ATE22430T1/en
Publication of EP0128402A1 publication Critical patent/EP0128402A1/en
Application granted granted Critical
Publication of EP0128402B1 publication Critical patent/EP0128402B1/en
Expired legal-status Critical Current

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/028—Loading or unloading of dies, platens or press rams
    • 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
    • B66F9/08—Masts; Guides; Chains
    • B66F9/10—Masts; Guides; Chains movable in a horizontal direction relative to truck

Definitions

  • the invention relates to a cross or multi-way forklift truck which has a recess provided with lateral guide rails for the lifting mast.
  • Such cross or four-way forklifts are known.
  • the forklifts move longitudinally along a row of racks, the four-way forklift has the additional advantage of being able to approach the rack in transverse travel.
  • the goods to be transported for example boards to be picked, are then taken out on the fork.
  • the forklifts are also equipped with a lifting mast along which the forks move and which is usually designed to be extendable to achieve greater stacking heights.
  • the lifting mast including the fork must be able to be moved towards this goods.
  • the known stackers are provided with a recess within which the lifting mast can be moved in the transverse direction to the material; the mast is provided with castors and the recess with side guide rails in which the castors run.
  • Such tool changing trolleys are complex and expensive due to their design. The purchase of such a tool changing carriage is therefore often not profitable, in particular for smaller companies, although it must also be noted that heavy tools of the type mentioned can only be changed relatively rarely. The expensive tool changing carts are therefore often underutilized.
  • the object of the invention is to design a known cross or four-way forklift so that it can also be used for changing heavy tools. This object is achieved by an insertion frame which can be pushed into the recess after removal of the mast and which thereby slides with its sliding rollers or sliding pieces in the side guide rails.
  • the cross or four-way forklift can therefore perform a dual function. In normal operation, it is used in a known manner for the transportation of goods. If, on the other hand, it is necessary to change a heavy tool, the lift mast of the truck is removed and the insertion frame according to the invention is used instead. The guide rails already provided for the mast are also used to guide the slide-in frame. The tool to be changed is placed on the slide-in frame.
  • This training has the advantage that no separate tool changing carriage is required for changing and transporting heavy tools.
  • the slide-in frame is of course easier to manufacture and therefore cheaper than an entire car.
  • the advantages of the tool changing unit according to the invention therefore come into play particularly when tools need to be changed only relatively rarely.
  • the forklift is then normally used in its forklift function and is only equipped with the insertion frame for changing the tool.
  • An advantageous development of the invention therefore provides that the slide-in frame is mounted on one or more carrying wheels that are in contact with the road. With such a design, tools that exceed the load capacity of this truck can also be transported with a normal forklift, since in this case the weight of the tool is also taken up by the support wheels attached to the slide-in frame.
  • At least one of these carrying wheels is steered, for example by means of a hydraulic cylinder.
  • the insertion frame of the tool changing unit carries a lifting platform which is preferably height-adjustable via hydraulic cylinders.
  • This lifting platform can be set to the required height so that tools that are at different heights can also be accommodated.
  • one or more push chains and corresponding push chain drives are arranged on the lifting platform. With these push chains, the tool can be placed on the Lifting platform can be pulled or pushed down again.
  • the four-way forklift shown in FIGS. 1 and 2 and generally designated 1 comprises a U-shaped, torsionally rigid frame 2.
  • This frame runs on rotatable wheels 3a to 3d which enable the truck to move both in the longitudinal and in the transverse direction .
  • the wheel 3b can also be steered from the cab.
  • the drive units, the auxiliary units and the batteries are accommodated on the frame 2. These units are not specified in more detail in FIGS. 1 and 2 and are generally designated 4a, 4b and 4c.
  • the frame 2 also bears the driver's cab 5, in which the driver can take a seat on the seat 6 and operate the four-way forklift via a steering wheel 7 and a console 8. It is protected against accidents by an arrangement of steel tubes 9.
  • the U-shaped frame 2 encloses a recess 10 which serves to receive the lifting mast 11 and the load fork 12.
  • the load fork 12 is arranged on the mast 11 vertically movable in a known manner.
  • the lifting mast 11 in turn can consist of several extendable sections. In Fig. 1 the mast 11 is shown in its extended position with the fork 12 also extended. The retracted position is shown in dashed lines. In these representations, the fork tines of the load fork 12 are provided with the reference numbers 13a and 13b.
  • the four-way forklift shown in FIGS. 1 and 2 now travels along a row of shelves in the direction of arrow A to take up a load. Then he can, since it is directionally controllable, drive in the direction of arrow B onto the goods to be transported. To pick up this goods, the load fork must now - after being moved along the mast 11 to the correct height - in the direction of arrow B below this Be driven well.
  • the lifting mast 11 is arranged on a carriage 14 which can be moved in the direction of the arrow B.
  • This slide 14 is mounted with guide rollers 15a and 15b in guide rails 16a and 16b provided in the frame 2.
  • the entire lifting mast, including the load fork can thereby be displaced in the direction of arrow B, and means known per se, for example a hydraulic cylinder, can be provided for driving.
  • the invention therefore provides to convert a cross or four-way forklift, such as was shown and described in FIGS. 1 and 2, so that it is also suitable for changing heavy tools.
  • FIGS. 1 and 2 In the four-way forklift shown in FIGS. 1 and 2, the carriage 14 with the lifting mast 11 and the load fork 12 is first removed for this purpose. An insertion frame is then inserted into the guide rails 16a and 16b provided on the frame 2, with which heavy tools can be exchanged and transported.
  • the converted four-way forklift is shown in FIGS. 3 and 4 in a representation corresponding to FIGS. 1 and 2.
  • the insertion frame is designated 17 there. It is inserted into the recess 10 which normally receives the slide of the mast and runs in the guide rails 16a and 16b provided on the frame 2 by means of sliding rollers 18a and 18b. This ensures easy installation and removal of this slide-in frame.
  • the front cladding of the slide-in frame has been omitted in order to reveal the view of the supporting wheels underneath.
  • These carrying wheels - designated 19a, 19b and 19c in FIGS. 3 and 4 - serve to increase the carrying capacity of the vehicle.
  • the weight of the tools to be changed can therefore significantly exceed the actual load capacity of the four-way forklift.
  • the support wheels 19a to 19c essentially that Take up the weight of the tool to be changed.
  • All of these carrying wheels are rotatable so that the four-way forklift can travel in all directions. It is also favorable if one or more of these carrying wheels are steered. In the exemplary embodiment, this is the supporting wheel 19b, which is articulated via the piston rod 20 of a hydraulic cylinder 21.
  • a lifting platform 22 is also provided for changing tools located at different heights.
  • the height of this lifting platform can be adjusted by means of hydraulic cylinders 23a to 23f, which are only indicated.
  • Push chains 24a and 24b which are driven by push chain drives 25a and 25b, are also provided for receiving or pushing off the tool.
  • the lifting platform also carries a stop 26 which limits the movement of the tool. The tool itself is not shown in FIGS. 3 and 4.
  • the invention thus creates a possibility of using a cross or four-way forklift through an inexpensive tool changing unit also for changing heavy tools. This eliminates the need for a special tool changing carriage, which is particularly advantageous if these tools only have to be changed relatively rarely.

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

Abstract

1. A transversal or four-way fork-lift truck which has a recess (10) with lateral guide rails (16a, 16b) for the lift mast (11), characterised by a push-in chassis (17) which is constructed as a tool change unit and, after the lift mast (11) has been removed, can be introduced into the recess (10).

Description

Die Erfindung betrifft einen Quer- oder Vielwegegabelstapler, der eine mit seitlichen Führungsschienen für den Hubmast versehene Ausnehmung aufweist.The invention relates to a cross or multi-way forklift truck which has a recess provided with lateral guide rails for the lifting mast.

Derartige Quer- oder Vierwegegabelstapler sind bekannt. Beispielshaft sei hier auf die DE-OS 2941 954 verwiesen. Diese Stapler bewegen sich in Längsfahrt entlang einer Regalreihe, wobei der Vierwegegabelstapler den zusätzlichen Vorteil besitzt, in Querfahrt auf das Regal zufahren zu können. Anschließend wird das zu befördernde Gut, beispielsweise zu kommissionierende Platten, au die Gabel genommen. Die Stapler sind hier zu mit einem Hubmast versehen, entlang dem sich die Gabelzinken bewegen und der meist zur Erzielung größerer Stapelhöhen ausfahrbar gestaltet ist. Um andererseits die Gabel unter das zu befördernde Gut bewegen zu können, muß der Hubmast einschließlich der Gabel auf dieses Gut zu bewegt werden können. Hierzu sind die bekannten Stapler mit einer Ausnehmung versehen, innerhalb derer der Hubmast in Querrichtung zum Gut bewegt werden kann; der Hubmast ist hierzu mit Gleitrollen und die Ausnehmung mit seitlichen Führungsschienen versehen, in denen die Gleitrollen laufen.Such cross or four-way forklifts are known. For example, reference is made to DE-OS 2941 954. These forklifts move longitudinally along a row of racks, the four-way forklift has the additional advantage of being able to approach the rack in transverse travel. The goods to be transported, for example boards to be picked, are then taken out on the fork. The forklifts are also equipped with a lifting mast along which the forks move and which is usually designed to be extendable to achieve greater stacking heights. On the other hand, in order to be able to move the fork under the goods to be transported, the lifting mast including the fork must be able to be moved towards this goods. For this purpose, the known stackers are provided with a recess within which the lifting mast can be moved in the transverse direction to the material; the mast is provided with castors and the recess with side guide rails in which the castors run.

Mit einem derartigen Stapler lassen sich Güter mittleren Gewichts bewegen. Die übliche Tragfähigkeit dieser Stapler liegt bei etwa vier bis fünf Tonnen.With such a stacker, goods of medium weight can be moved. The usual load capacity of these forklifts is around four to five tons.

Ein ganz anderes Problem ergibt sich, wenn innerhalb eines Betriebes schwere Werkzeuge, beispielsweise Formen von Karosseriepressen, gewechselt und/oder transportiert werden müssen. Hierfür werden bekanntermaßen Werkzeugwechselwagen verwendet, die mit den nötigen Einrichtungen versehen sind. um ein derartiges Werkzeug aufzunehmen, zu transportieren und abzuladen. In der Regel handelt es sich um mit einer Hubplattform und Zug- bzw. Schubeinrichtungen versehene Wagen.A completely different problem arises when heavy tools, for example forms of body presses, have to be changed and / or transported within a company. As is known, tool changing carriages are used for this, which are provided with the necessary facilities. to pick up, transport and unload such a tool. As a rule, these are wagons equipped with a lifting platform and pulling or pushing devices.

Derartige Werkzeugwechselwagen sind jedoch konstruktionsbedingt aufwendig und teuer. Insbesondere für kleinere Betriebe ist daher oft die Anschaffung eines solchen Werkzeugwechselwagens nicht rentabel, wobei auch beachtet werden muß, daß schwere Werkzeuge der genannten Art nur relativ selten zu wechseln sind. Die teuren Werkzeugwechselwagen sind daher oft nicht ausgelastet.Such tool changing trolleys are complex and expensive due to their design. The purchase of such a tool changing carriage is therefore often not profitable, in particular for smaller companies, although it must also be noted that heavy tools of the type mentioned can only be changed relatively rarely. The expensive tool changing carts are therefore often underutilized.

Aufgabe der Erfindung ist es, einen bekannten Quer- oder Vierwegegabelstapler so auszubilden, daß er auch für das Wechseln schwerer Werkzeuge Verwendung finden kann. Diese Aufgabe wird gelöst durch einen Einschieberahmen, der nach Entfernen des Hubmastes in die Ausnehmung eingeschoben werden kann und der dabei mit seinen Gleitrollen oder Gleitstücken in den seitlichen Führungsschienen gleitet.The object of the invention is to design a known cross or four-way forklift so that it can also be used for changing heavy tools. This object is achieved by an insertion frame which can be pushed into the recess after removal of the mast and which thereby slides with its sliding rollers or sliding pieces in the side guide rails.

Der Quer- oder Vierwegegabelstapler kann demgemäß eine Doppelfunktion erfüllen. Im normalen Betrieb wird er in bekannter Weise zum Befördern von Gütern eingesetzt. Ist es dagegen notwendig, ein schweres Werkzeug zu wechseln, so wird der Hubmast des Staplers entfernt und statt dessen der erfindungsgemäße Einschieberahmen eingesetzt. Dabei werden die schon für den Hubmast vorgesehenen Führungsschienen auch zum Führen des Einschieberahmens verwendet. Das zu wechselnde Werkzeug wird hierbei auf dem Einschieberahmen abgelegt.The cross or four-way forklift can therefore perform a dual function. In normal operation, it is used in a known manner for the transportation of goods. If, on the other hand, it is necessary to change a heavy tool, the lift mast of the truck is removed and the insertion frame according to the invention is used instead. The guide rails already provided for the mast are also used to guide the slide-in frame. The tool to be changed is placed on the slide-in frame.

Diese Ausbildung hat den Vorteil, daß zum Wechseln und zum Transport schwerer Werkzeuge kein gesonderter Werkzeugwechselwagen erforderlich ist. Der Einschieberahmen ist natürlich einfacher herzustellen und daher preisgünstiger als ein ganzer Wagen. Die Vorteile der erfindungsgemüßen Werkzeugwechseleinheit kommen daher insbesondere dann zum Tragen, wenn Werkzeuge nur relativ selten gewechselt werden müssen. Der Gabelstapler wird dann normalerweise in seiner Staplerfunktion eingesetzt und nur zum Wechseln des Werkzeugs mit dem Einschieberahmen ausgerüstet.This training has the advantage that no separate tool changing carriage is required for changing and transporting heavy tools. The slide-in frame is of course easier to manufacture and therefore cheaper than an entire car. The advantages of the tool changing unit according to the invention therefore come into play particularly when tools need to be changed only relatively rarely. The forklift is then normally used in its forklift function and is only equipped with the insertion frame for changing the tool.

Ein zusätzliches Problem ergibt sich, wenn besonders schwere Werkzeuge gewechselt werden müssen, die die normale Tragfühigkeit des Gabelstaplers überschreiten. Dies ist beispielsweise dann der Fall, wenn mit einem Fünf-Tonnen-Stapler ein Zehn-Tonnen-Werkzeug gewechselt werden soll. Eine vorteilhafte Weiterbildung der Erfindung sieht daher vor, daß der Einschieberahmen auf einem oder mehreren Tragrädern, die mit der Fahrbahn in Kontakt stehen, gelagert ist. Bei einer derartigen Ausbildung lassen sich mit einem normalen Gabelstapler auch Werkzeuge transportieren, die die Tragfähigkeit dieses Staplers überschreiten, da das Gewicht des Werkzeugs in diesem Fall zusätzlich von den an dem Einschieberahmen angebrachten Tragrüdern aufgenommen wird.An additional problem arises when particularly heavy tools have to be replaced that exceed the normal load capacity of the forklift. This is the case, for example, if a ten-ton tool is to be changed with a five-ton stacker. An advantageous development of the invention therefore provides that the slide-in frame is mounted on one or more carrying wheels that are in contact with the road. With such a design, tools that exceed the load capacity of this truck can also be transported with a normal forklift, since in this case the weight of the tool is also taken up by the support wheels attached to the slide-in frame.

Eine vorteilhafte Weiterbildung der Erfindung sieht vor, daß mindestens eines dieser Tragräder gelenkt ist, beispielsweise mittels eines Hydraulikzylinders. Dies ist insbesondere dann von Vorteil, wenn es sich bei dem Gabelstapler um einen Vierwegegabelstapler handelt, der sich auch in Querrichtung bewegen kann. Der Stapler ist durch diese Maßnahme wesentlich genauer und leichter zu lenken.An advantageous development of the invention provides that at least one of these carrying wheels is steered, for example by means of a hydraulic cylinder. This is particularly advantageous if the forklift is a four-way forklift that can also move in the transverse direction. This measure makes the truck much more precise and easier to steer.

Zweckmäßig ist es weiterhin, wenn der Einschieberahmen der Werkzeugwechseleinheit eine vorzugsweise über Hydraulikzylinder höhenverstellbare Hubplattform trägt. Diese Hubplattform kann auf die erforderliche Höhe eingestellt werden, so daß auch Werkzeuge, die sich auf verschiedenen Höhen befinden, aufgenommen werden können. Ebenfalls vorteilhaft ist es, wenn auf der Hubplattform eine oder mehrere Schubketten sowie entsprechende Schubkettenantriebe angeordnet sind. Mit diesen Schubketten kann das Werkzeug auf die Hubplattform gezogen bzw. von dieser wieder heruntergeschoben werden.It is also expedient if the insertion frame of the tool changing unit carries a lifting platform which is preferably height-adjustable via hydraulic cylinders. This lifting platform can be set to the required height so that tools that are at different heights can also be accommodated. It is also advantageous if one or more push chains and corresponding push chain drives are arranged on the lifting platform. With these push chains, the tool can be placed on the Lifting platform can be pulled or pushed down again.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der Beschreibung zur Zeichnung, in der eine bevorzugte Ausführungsform der Erfindung dargestellt ist. Es zeigen:

  • Fig. 1 die Frontansicht eines bekannten Vierwegegabelstaplers,
  • Fig. 2 die Draufsicht auf den Vierwegegabelstapler gemäß der Fig. 1,
  • Fig. 3 den Vierwegegabelstapler gemäß der Fig. 1, wobei anstelle des Hubmastes die erfindungsgemäße Werkzeugwechseleinheit eingesetzt wurde und
  • Fig. 4 die Draufsicht auf den gemäß Fig. 3 mit der Werkzeugwechseleinheit ausgerüsteten Vierwegegabelstapler.
Further features and advantages of the invention result from the description of the drawing, in which a preferred embodiment of the invention is shown. Show it:
  • 1 is a front view of a known four-way forklift,
  • 2 shows the top view of the four-way forklift according to FIG. 1,
  • 3 shows the four-way forklift according to FIG. 1, the tool changing unit according to the invention being used instead of the lifting mast and
  • FIG. 4 shows the top view of the four-way forklift equipped with the tool changing unit according to FIG. 3.

Der in den Fig. 1 und 2 dargestellte und im ganzen mit 1 bezeichnete Vierwegegabelstapler umfaßt einen U-förmigen, verwindungssteifen Rahmen 2. Dieser Rahmen läuft auf drehbaren Rädern 3a bis 3d, die eine Bewegung des Staplers sowohl in Längs- als auch in Querrichtung ermöglichen. Mindestens eines dieser Räder, bevorzugt die Räder 3a und 3b, sind angetrieben. Das Rad 3b ist überdies vom Fahrerhaus aus lenkbar.The four-way forklift shown in FIGS. 1 and 2 and generally designated 1 comprises a U-shaped, torsionally rigid frame 2. This frame runs on rotatable wheels 3a to 3d which enable the truck to move both in the longitudinal and in the transverse direction . At least one of these wheels, preferably wheels 3a and 3b, are driven. The wheel 3b can also be steered from the cab.

Auf dem Rahmen 2 sind die Antriebsaggregate, die Hilfsaggregate und die Batterien untergebracht. Diese Aggregate sind in den Fig. 1 und 2 nicht naher spezifiziert und generell mit 4a, 4b und 4c bezeichnet. Der Rahmen 2 trügt fernerhin das Fahrerhaus 5, in dem der Fahrer auf dem Sitz 6 Platz nehmen und über ein Steuerrad 7 sowie eine Konsole 8 den Vierwegegabelstapler bedienen kann. Er ist dabei durch eine Anordnung von Stahlrohren 9 gegen Unfälle geschützt.The drive units, the auxiliary units and the batteries are accommodated on the frame 2. These units are not specified in more detail in FIGS. 1 and 2 and are generally designated 4a, 4b and 4c. The frame 2 also bears the driver's cab 5, in which the driver can take a seat on the seat 6 and operate the four-way forklift via a steering wheel 7 and a console 8. It is protected against accidents by an arrangement of steel tubes 9.

Der U-förmige Rahmen 2 umschließt eine Ausnehmung 10, die zur Aufnahme des Hubmastes 11 und der Lastgabel 12 dient. Die Lastgabel 12 ist an dem Hubmast 11 in bekannter Weise vertikal verfahrbar angeordnet. Der Hubmast 11 seinerseits kann aus mehreren ausfahrbaren Abschnitten bestehen. In der Fig. 1 ist der Hubmast 11 in seiner ausgefahrenen Stellung mit ebenfalls ausgefahrener Lastgabel 12 gezeigt. Die eingefahrene Stellung ist gestrichelt gezeichnet. In diesen Darstellungen sind die Gabelzinken der Lastgabel 12 mit den Bezugsziffern 13a und 13b versehen.The U-shaped frame 2 encloses a recess 10 which serves to receive the lifting mast 11 and the load fork 12. The load fork 12 is arranged on the mast 11 vertically movable in a known manner. The lifting mast 11 in turn can consist of several extendable sections. In Fig. 1 the mast 11 is shown in its extended position with the fork 12 also extended. The retracted position is shown in dashed lines. In these representations, the fork tines of the load fork 12 are provided with the reference numbers 13a and 13b.

Der in den Fig. 1 und 2 gezeigte Vierwegegabelstapler fährt nun zur Aufnahme einer Last in Richtung des Pfeiles A an einer Regalreihe entlang. Anschließend kann er, da er richtungssteuerbar ist, in Richtung des Pfeiles B auf das zu befördernde Gut zufah ren. Zur Aufnahme dieses Guts muß die Lastgabel nun - nachdem sie entlang dem Hubmast 11 auf die richtige Höhe gefahren wurdeweiterhin in Richtung des Pfeiles B unter dieses Gut gefahren werden. Hierzu ist der Hubmast 11 auf einem in Richtung des Pfeiles B verfahrbaren Schlitten 14 angeordnet. Dieser Schlitten 14 ist mit Gleitrollen 15a und 15b in in dem Rahmen 2 vorgesehenen Führungsschienen 16a und 16b gelagert. Der gesamte Hubmast einschließlich der Lastgabel kann dadurch in Richtung des Pfeiles B verschoben werden, wobei zum Antrieb an sich bekannte Mittel, beispielsweise ein Hydraulikzylinder, vorgesehen sein können.The four-way forklift shown in FIGS. 1 and 2 now travels along a row of shelves in the direction of arrow A to take up a load. Then he can, since it is directionally controllable, drive in the direction of arrow B onto the goods to be transported. To pick up this goods, the load fork must now - after being moved along the mast 11 to the correct height - in the direction of arrow B below this Be driven well. For this purpose, the lifting mast 11 is arranged on a carriage 14 which can be moved in the direction of the arrow B. This slide 14 is mounted with guide rollers 15a and 15b in guide rails 16a and 16b provided in the frame 2. The entire lifting mast, including the load fork, can thereby be displaced in the direction of arrow B, and means known per se, for example a hydraulic cylinder, can be provided for driving.

In vielen, insbesondere kleineren Betrieben stellt sich nun das Problem, daß auch die Werkzeuge schwerer Maschinen, beispielsweise die Formen von Karosseriepressen, gewechselt werden müssen. Diese Werkzeuge haben ein Gewicht von mehreren Tonnen. Zum Wechseln und Transportieren dieser Werkzeuge wurden bisher spezielle Werkzeugwechselwagen eingesetzt, die jedoch relativ teuer und meist nicht ausgelastet sind, da schwere Werkzeuge dieser Art nur selten gewechselt werden müssen.In many, especially smaller companies, the problem now arises that the tools of heavy machines, for example the shapes of body presses, also have to be changed. These tools weigh several tons. Up to now, special tool changing carriages have been used for changing and transporting these tools, but these are relatively expensive and mostly underutilized, since heavy tools of this type only have to be changed rarely.

Auch in kleineren Betrieben ist jedoch häufig ein Quer- oder Vierwegegabelstapler vorhanden. Dieser Stapler ist allerdings in der Regel nicht zur Aufnahme schwerer Werkzeuge geeignet, da keine Mittel vorhanden sind, um das Werkzeug auf den Stapler zu laden und auch in vielen Fällen die Tragfähigkeit dieses Staplers für die manchmal über 10 Tonnen schweren Werkzeuge nicht ausreicht.However, a cross or four-way forklift is often also available in smaller companies. However, this stacker is usually not suitable for holding heavy tools, since there are no means to load the tool onto the stacker and in many cases the load capacity of this stacker is not sufficient for the tools, which sometimes weigh over 10 tons.

Die Erfindung sieht daher vor, einen Quer- oder Vierwegelgabelstapler, wie er beispielsweise in den Fig. 1 und 2 dargestellt und beschrieben wurde, so umzurüsten, daß er auch für das Wechseln schwerer Werkzeuge geeignet ist.The invention therefore provides to convert a cross or four-way forklift, such as was shown and described in FIGS. 1 and 2, so that it is also suitable for changing heavy tools.

Bei dem in den Fig. 1 und 2 gezeigten Vierwegegabelstapler wird hierzu zunächst der Schlitten 14 mit dem Hubmast 11 und der Lastgabel 12 entfernt. ln die an dem Rahmen 2 vorgesehenen Führungsschienen 16a und 16b wird sodann ein Einschieberahmen eingesetzt, mit dem schwere Werkzeuge gewechselt und transportiert werden können. Den umgerüsteten Vierwegegabelstapler zeigen die Fig. 3 und 4 in einer den Fig. 1 und 2 entsprechenden Darstellung.In the four-way forklift shown in FIGS. 1 and 2, the carriage 14 with the lifting mast 11 and the load fork 12 is first removed for this purpose. An insertion frame is then inserted into the guide rails 16a and 16b provided on the frame 2, with which heavy tools can be exchanged and transported. The converted four-way forklift is shown in FIGS. 3 and 4 in a representation corresponding to FIGS. 1 and 2.

Der Einschieberahmen ist dort mit 17 bezeichnet. Er wird in die normalerweise den Schlitten des Hubmastes aufnehmende Ausnehmung 10 eingesetzt und läuft in den an dem Rahmen 2 vorgesehenen Führungsschienen 16a und 16b mittels Gleitrollen 18a und 18b. Damit ist ein leichter Ein- und Ausbau dieses Einschieberahmens gewahrleistet. In der Darstellung nach Fig. 3 wurde dabei die vordere Verkleidung des Einschieberahmens weggelassen, um den Blick auf die darunterliegenden Tragrader freizugeben.The insertion frame is designated 17 there. It is inserted into the recess 10 which normally receives the slide of the mast and runs in the guide rails 16a and 16b provided on the frame 2 by means of sliding rollers 18a and 18b. This ensures easy installation and removal of this slide-in frame. In the illustration according to FIG. 3, the front cladding of the slide-in frame has been omitted in order to reveal the view of the supporting wheels underneath.

Diese Tragräder - in den Fig. 3 und 4 mit 19a, 19b und 19c bezeichnet - dienen zur Erhohung der Tragfähigkeit des Fahrzeuges. Das Gewicht der zu wechselnden Werkzeuge kann daher die eigentliche Tragfähigkeit des Vierwegegabelstaplers erheblich überschreiten. Beispielsweise ist es möglich, mit einem Fünf-Tonnen-Stapler Werkzeuge zu wechseln, die 10 Tonnen und mehr wiegen. Dies ist möglich, da die Tragrader 19a bis 19c im wesentlichen das Gewicht des zu wechselnden Werkzeugs aufnehmen. Alle diese Tragräder sind drehbar, damit der Vierwegegabelstapler in alle Richtungen fahren kann. Günstig ist es überdies, wenn eines oder mehrere dieser Tragräder gelenkt sind. Im Ausführungsbeispiel ist dies das Tragrad 19b, das über die Kolbenstange 20 eines Hydraulikzylinders 21 angelenkt ist.These carrying wheels - designated 19a, 19b and 19c in FIGS. 3 and 4 - serve to increase the carrying capacity of the vehicle. The weight of the tools to be changed can therefore significantly exceed the actual load capacity of the four-way forklift. For example, it is possible to change tools that weigh 10 tons and more with a five-ton stacker. This is possible because the support wheels 19a to 19c essentially that Take up the weight of the tool to be changed. All of these carrying wheels are rotatable so that the four-way forklift can travel in all directions. It is also favorable if one or more of these carrying wheels are steered. In the exemplary embodiment, this is the supporting wheel 19b, which is articulated via the piston rod 20 of a hydraulic cylinder 21.

Zum Wechseln von auf verschiedener Höhe befindlichen Werkzeugen ist ferner eine Hubplattform 22 vorgesehen. Diese Hubplattform kann über nur andeutungsweise gezeigte Hydraulikzylinder 23a bis 23f in der Höhe verstellt werden. Zur Aufnahme bzw. zum Abschieben des Werkzeugs sind weiterhin Schubketten 24a und 24b vorgesehen, die uber Schubkettenantriebe 25a und 25b angetrieben werden.'Die Hubplattform trägt ferner einen Anschlag 26, der die Bewegung des Werkzeugs begrenzt. Das Werkzeug selbst ist in den Fig. 3 und 4 nicht gezeigt.A lifting platform 22 is also provided for changing tools located at different heights. The height of this lifting platform can be adjusted by means of hydraulic cylinders 23a to 23f, which are only indicated. Push chains 24a and 24b, which are driven by push chain drives 25a and 25b, are also provided for receiving or pushing off the tool. 'The lifting platform also carries a stop 26 which limits the movement of the tool. The tool itself is not shown in FIGS. 3 and 4.

Durch die Erfindung wird somit eine Möglichkeit geschaffen, einen Quer- oder Vierwegegabelstapler durch eine preisgünstige Werkzeugwechseleinheit auch zum Wechseln schwerer Werkzeuge zu verwenden. Der Einsatz eines speziellen Werkzeugwechselwagens erübrigt sich damit, was insbesondere dann von Vorteil ist, wenn diese Werkzeuge nur relativ selten gewechselt werden müssen.The invention thus creates a possibility of using a cross or four-way forklift through an inexpensive tool changing unit also for changing heavy tools. This eliminates the need for a special tool changing carriage, which is particularly advantageous if these tools only have to be changed relatively rarely.

Claims (6)

1. A transversal or four-way fork-lift truck which has a recess (10) with lateral guide rails (16a, 16b) for the lift mast (11), characterised by a push-in chassis (17) which is constructed as a tool change unit and, after the lift mast (11) has been removed, can be introduced into the recess (10).
2. A transversal or four-way fork-lift truck according to Claim 1, characterised in that the push-in chassis (17) is guided by means of castors (18a, 18b) or sliding blocks in the side guide rails (16a, 16b).
3. A transversal or four-way fork-lift truck according to Claim 1, characterised in that the push-in chassis (17) is additionally mounted on one or more supporting wheels (19a to 19c) which are in contact with the track.
4. A transversal or four-way fork-lift truck according to Claim 2, characterised in that at least one of the supporting wheels (19b) is articulated, particularly by means of a hydraulic cylinder (21
5. A transversal or four-way fork-lift truck according to one or more of Claims 1 to 4, characterised in that the push-in chassis carries a lift platform (22) adjustable in height preferably by means of hydraulic cylinders (23a to 23f).
6. A transversal or four-way fork-lift truck according to Claim 5, characterised in that one or more pusher chains (24a, 24b) as well as corresponding chain drives (25a, 25b) are disposed on the lift platform (22).
EP84105765A 1983-06-11 1984-05-19 Side-loading fork-lift truck Expired EP0128402B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105765T ATE22430T1 (en) 1983-06-11 1984-05-19 CROSS OR FOUR-WAY FORKLIFT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833321229 DE3321229A1 (en) 1983-06-11 1983-06-11 LOW OR FOUR-WAY FORKLIFT
DE3321229 1983-06-11

Publications (2)

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EP0128402A1 EP0128402A1 (en) 1984-12-19
EP0128402B1 true EP0128402B1 (en) 1986-09-24

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EP84105765A Expired EP0128402B1 (en) 1983-06-11 1984-05-19 Side-loading fork-lift truck

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EP (1) EP0128402B1 (en)
AT (1) ATE22430T1 (en)
DE (2) DE3321229A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2889077B2 (en) * 1993-04-16 1999-05-10 ワイケイケイ株式会社 Automatic guided vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120042A (en) * 1936-07-01 1938-06-07 Baker Raulang Co Transporting equipment
US2699878A (en) * 1952-09-27 1955-01-18 Materials Transp Company Die handling unit for lift trucks
US3019919A (en) * 1958-03-31 1962-02-06 Elwell Parker Electric Co Industrial truck with auxiliary lift
US2959235A (en) * 1958-04-09 1960-11-08 Clark Equipment Co Articulated lift truck
FR1309161A (en) * 1960-08-08 1962-11-16 Ct D Etudes Et D Applic Des Te Press tool handling and positioning trolley
US3227291A (en) * 1963-04-08 1966-01-04 Ford Motor Co Automatic dielectric bonding die ejection system
US3712492A (en) * 1971-07-01 1973-01-23 Allis Chalmers Sideloader with powered rollers for endwise unloading
US4056207A (en) * 1976-07-15 1977-11-01 Spilker James W Die changer
DE3116985A1 (en) * 1981-04-29 1982-11-18 Trepel Ag, 6200 Wiesbaden Tool-changing device

Also Published As

Publication number Publication date
DE3321229A1 (en) 1984-12-13
ATE22430T1 (en) 1986-10-15
DE3460809D1 (en) 1986-10-30
EP0128402A1 (en) 1984-12-19

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