EP1359113A2 - Lift truck with a device for moving the lift mast - Google Patents

Lift truck with a device for moving the lift mast Download PDF

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Publication number
EP1359113A2
EP1359113A2 EP03007553A EP03007553A EP1359113A2 EP 1359113 A2 EP1359113 A2 EP 1359113A2 EP 03007553 A EP03007553 A EP 03007553A EP 03007553 A EP03007553 A EP 03007553A EP 1359113 A2 EP1359113 A2 EP 1359113A2
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EP
European Patent Office
Prior art keywords
mast
truck
movement
acceleration
movement device
Prior art date
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Granted
Application number
EP03007553A
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German (de)
French (fr)
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EP1359113B1 (en
EP1359113A3 (en
EP1359113B2 (en
Inventor
Oliver Retzlaff
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STILL GmbH
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Still Wagner GmbH and Co KG
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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
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/24—Electrical devices or systems
    • 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
    • B66F9/082—Masts; Guides; Chains inclinable
    • 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 an industrial truck with a frame, a mast, a along the mast vertically movable load-carrying means and at least one Movement device for moving the mast relative to the frame.
  • the mast by means of a tilting device relative to a Be tilted frame of the truck.
  • Reach trucks have additional a pushing device with which the mast horizontally, in the longitudinal direction of Truck can be moved relative to the frame.
  • the invention is therefore based on the object, an industrial truck of the beginning be provided with improved handling capacity.
  • acceleration and / or the speed of the device that can be generated by means of the movement device Movement of the mast in dependence on at least one operating parameter of the truck can be influenced.
  • the operating parameter is with a detected by a suitable measuring instrument and preferably in an electrical signal implemented.
  • An electronic control processes the operating parameters and generates from this one for the speed or acceleration of the Lifting equipment is the decisive influencing factor. Possible influencing factors are for example, the maximum speed that can be generated with the movement device or maximum acceleration of the mast.
  • acceleration includes in the present context also during braking of the mast occurring braking acceleration.
  • the operating parameter is at least approximately infinitely variable detected.
  • the infinite detection of the operating parameter makes it possible to Acceleration and / or the speed of the movement device as well vary almost continuously and constantly adapt to the conditions.
  • For the present application is considered to be stepless, for example, the Parameter acquisition by means of an incremental encoder.
  • An operating parameter is the current lifting height of the load handling device educated.
  • a two-channel lifting height sensor is used, the one provides redundant signal. This ensures that the calculation of the speed and / or the acceleration of the mast on no basis on the basis of a wrong Lifting height signal takes place.
  • the maximum acceleration and / or the maximum speed of the Movement device producible movement of the mast is dependent on the lift height influenced such that at low lift a stronger Acceleration or a higher speed is possible, than at large Lifting height.
  • a second operating parameter is the weight of one with the load handler formed load formed.
  • the load weight for example, indirectly over the be determined in a hydraulic lifting cylinder pending pressure. Of the Load weight hang on the acceleration of the lifting device on the Mast forces directly from.
  • the maximum acceleration and / or the maximum speed of the Movement device producible movement of the mast is dependent on the weight of the load influenced so that at low weight a stronger Acceleration or higher speed is possible than at high weight.
  • the movement device of a tilting device for formed the mast In lowered and unloaded state can thus the Mast tilted faster than in the raised and loaded condition.
  • a movement device of a pusher is formed for horizontal displacement of the mast. Moving the Mast relative to the frame of the truck takes place here so faster, the farther the load handler lowered and the lower it is loaded.
  • the invention can be used when the truck as Reach truck is designed.
  • a reach truck both the Tilting device, as well as the pusher in response to the above Operating parameters are influenced. This will, in comparison with Reach trucks of the prior art, a particularly large increase in Goods turnover performance achieved.
  • the figure shows an inventive designed as a reach truck Truck.
  • the reach truck has as essential components a frame. 1 and a driver's roof 2, under which the driver's seat of the Reach truck is located. Wheels 3 are on the frame 1 in the area below the driver's seat and attached to Radarmen 4.
  • the wheel arms 4 are also Part of the frame 1.
  • a telescopically extendable mast 5 can relative to the frame 1 are inclined about a horizontal axis 6. This is shown Mast 5 in its forwardly inclined end position 5a and in his back inclined end position 5b.
  • the tilt angle 7 of the mast 5 is usually about 6 degrees.
  • Along the mast 5 is designed as a fork Load-receiving means 10 slidably guided.
  • the tiltable about the axis 6 storage of the mast 5 takes place on a slide carriage 8.
  • the slide carriage 8 is connected to the Radarmen 4 slidably guided in the horizontal direction. Shown is the Thrust carriage 8 in its front end position and can along the push path 9 in Direction of the driver's seat are pushed.
  • the drive of the pusher for moving the sliding carriage 8 and thus of the mast 5 along the push path 9 by means of a hydraulic Cylinder includes.
  • the hydraulic cylinders are equipped with hydraulic valves Hydraulic pump connected.
  • the accelerations and speeds of the Tilting movement and the pushing movement can be controlled by appropriate the hydraulic valves are adjusted. It is also possible, the Accelerations and speeds of said movements over the Speed of a hydraulic motor driving the electric motor to control, which while being supplied with power accordingly.
  • This information will be in an electronic Control device of the truck processed, with limits for the Speeds and accelerations of the pushing movement of the sliding carriage. 8 and the tilting movement of the mast 5 are determined. These limits are like this measured that excessive swinging of the mast 5 is prevented.
  • the accelerations and speeds are not over the required extent limited, so that the reach truck is an optimal Goods turnover performance achieved.
  • the electronic control devices are the Relationships between the determined measured variables and the permissible ones Accelerations and speeds as software, for example in the form of Algorithms or maps deposited.
  • control device with the from Driver to operating levers for the tilting device and the Pusher connected.
  • the hydraulic valves or the hydraulic pump driving electric motor are by the electronic control device Subject to the control lever positions directly or indirectly controlled, the Accelerations and speeds limited to the maximum values determined become.

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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)

Abstract

The fork-lift truck includes a chassis (1), a lifting frame (5), a load fork (10) movable along the lifting frame, and at least one movement device to move the lifting frame related to the chassis. At least one of the acceleration and the speed of movement of the lifting frame that can be generated by the movement device are controlled as a function of at least one operating parameter of the truck.

Description

Die Erfindung betrifft ein Flurförderzeug mit einem Rahmen, einem Hubgerüst, einem entlang des Hubgerüsts vertikal bewegbaren Lastaufnahmemittel und mindestens einer Bewegungsvorrichtung zum Bewegen des Hubgerüsts relativ zu dem Rahmen.The invention relates to an industrial truck with a frame, a mast, a along the mast vertically movable load-carrying means and at least one Movement device for moving the mast relative to the frame.

Flurförderzeuge der genannten Art können beispielsweise als Gegengewichtsgabelstapler oder als Schubmaststapler ausgeführt sein. Üblicherweise kann bei diesen Geräten das Hubgerüst mittels einer Neigevorrichtung relativ zu einem Rahmen des Flurförderzeugs geneigt werden. Schubmaststapler weisen zusätzlich eine Schubvorrichtung auf, mit der das Hubgerüst horizontal, in Längsrichtung des Flurförderzeugs relativ zu dem Rahmen verschoben werden kann.Forklifts of the type mentioned, for example, as Counterbalance forklift or be designed as a reach truck. Usually can in these devices the mast by means of a tilting device relative to a Be tilted frame of the truck. Reach trucks have additional a pushing device with which the mast horizontally, in the longitudinal direction of Truck can be moved relative to the frame.

Insbesondere dann, wenn das Lastaufnahmemittel beladen und weit angehoben ist, kann ein Bewegen des Hubgerüsts mit der Neigevorrichtung oder mit der Schubvorrichtung zu einem Schwingen des Hubgerüsts führen. Ein solches Schwingen soll nach Möglichkeit verhindert werden, da dies zu einer Instabilität einer aufgenommenen Last und zu einer ungenauen Positionierung des
Lastaufnahmemittels führen kann. Aus diesem Grund wird bei bekannten Flurförderzeugen die Geschwindigkeit der mit der Bewegungsvorrichtung erzeugbaren Bewegung konstant auf einen niedrigen Wert eingestellt, wodurch ein Schwingen des beladenen und ausgefahrenen Hubgerüsts auf ein zulässiges Maß begrenzt werden kann. Bei abgesenktem und unbeladenem Lastaufnahmemittel gilt für die Geschwindigkeit der mit der Bewegungsvorrichtung erzeugbaren Bewegung derselbe niedrige Wert, obwohl die Gefahr eines Schwingens des Hubgerüsts nicht besteht.
Dies bedeutet, dass die Warenumschlagleistung des Flurförderzeugs über das eigentlich erforderliche Maß hinaus reduziert wird.In particular, when the load handler is loaded and raised, moving the mast with the tilting device or with the pusher may cause the mast to swing. Such swinging should be prevented as far as possible, since this leads to instability of a recorded load and to inaccurate positioning of the load
Lifting means can lead. For this reason, in known industrial trucks, the speed of the movement that can be generated by the movement device is constantly set to a low value, whereby oscillation of the loaded and extended mast can be limited to a permissible level. When the load handler is lowered and unloaded, the same low value applies to the speed of movement that can be generated by the moving device, although there is no risk of the mast swinging.
This means that the goods handling capacity of the truck is reduced beyond what is actually required.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Flurförderzeug der eingangs genannten Art mit verbesserter Warenumschlagleistung zur Verfügung zu stellen.The invention is therefore based on the object, an industrial truck of the beginning be provided with improved handling capacity.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Beschleunigung und/oder die Geschwindigkeit der mittels der Bewegungsvorrichtung erzeugbaren Bewegung des Hubgerüsts in Abhängigkeit von mindestens einem Betriebsparameter des Flurförderzeugs beeinflussbar ist. Der Betriebsparameter wird mit einem geeigneten Messinstrument erfasst und vorzugsweise in ein elektrisches Signal umgesetzt. Eine elektronische Steuerung verarbeitet den Betriebsparameter und erzeugt hieraus eine für die Geschwindigkeit oder Beschleunigung des Lastaufnahmemittels maßgebliche Einflussgröße. Mögliche Einflussgrößen sind beispielsweise die mit der Bewegungsvorrichtung erzeugbare Maximalgeschwindigkeit oder Maximalbeschleunigung des Hubgerüsts. Der Begriff "Beschleunigung" umfasst im vorliegenden Zusammenhang auch eine während des Abbremsens des Hubgerüsts auftretende Bremsbeschleunigung.This object is achieved in that the acceleration and / or the speed of the device that can be generated by means of the movement device Movement of the mast in dependence on at least one operating parameter of the truck can be influenced. The operating parameter is with a detected by a suitable measuring instrument and preferably in an electrical signal implemented. An electronic control processes the operating parameters and generates from this one for the speed or acceleration of the Lifting equipment is the decisive influencing factor. Possible influencing factors are for example, the maximum speed that can be generated with the movement device or maximum acceleration of the mast. The term "acceleration" includes in the present context also during braking of the mast occurring braking acceleration.

Mit besonderem Vorteil wird der Betriebsparameter zumindest annähernd stufenlos erfasst. Die stufenlose Erfassung des Betriebsparameters ermöglicht es, die Beschleunigung und/oder die Geschwindigkeit der Bewegungsvorrichtung ebenfalls annähernd stufenlos zu variieren und ständig an die Gegebenheiten anzupassen. Für die vorliegende Anwendung als stufenlos anzusehen ist beispielsweise auch die Parametererfassung mittels eines Inkrementalgebers.With particular advantage, the operating parameter is at least approximately infinitely variable detected. The infinite detection of the operating parameter makes it possible to Acceleration and / or the speed of the movement device as well vary almost continuously and constantly adapt to the conditions. For the present application is considered to be stepless, for example, the Parameter acquisition by means of an incremental encoder.

Ein Betriebsparameter ist von der aktuellen Hubhöhe des Lastaufnahmemittels gebildet. Hierbei wird ein zweikanaliger Hubhöhensensor verwendet, der ein redundantes Signal liefert. Dies stellt sicher, dass die Berechnung der Geschwindigkeit und/oder der Beschleunigung des Hubgerüsts keinesfalls auf Basis eines falschen Hubhöhensignals erfolgt.An operating parameter is the current lifting height of the load handling device educated. Here, a two-channel lifting height sensor is used, the one provides redundant signal. This ensures that the calculation of the speed and / or the acceleration of the mast on no basis on the basis of a wrong Lifting height signal takes place.

Die maximale Beschleunigung und/oder die maximale Geschwindigkeit der mittels der Bewegungsvorrichtung erzeugbaren Bewegung des Hubgerüsts ist in Abhängigkeit von der Hubhöhe derart beeinflussbar, dass bei geringer Hubhöhe eine stärkere Beschleunigung oder eine höhere Geschwindigkeit möglich ist, als bei großer Hubhöhe.The maximum acceleration and / or the maximum speed of the Movement device producible movement of the mast is dependent on the lift height influenced such that at low lift a stronger Acceleration or a higher speed is possible, than at large Lifting height.

Ein zweiter Betriebsparameter ist von dem Gewicht einer mit dem Lastaufnahmemittel aufgenommenen Last gebildet. Das Lastgewicht kann beispielsweise indirekt über den in einem hydraulischen Hubzylinder anstehenden Druck ermittelt werden. Von dem Lastgewicht hängen die bei einer Beschleunigung des Lastaufnahmemittels auf das Hubgerüst wirkenden Kräfte direkt ab. A second operating parameter is the weight of one with the load handler formed load formed. The load weight, for example, indirectly over the be determined in a hydraulic lifting cylinder pending pressure. Of the Load weight hang on the acceleration of the lifting device on the Mast forces directly from.

Die maximale Beschleunigung und/oder die maximale Geschwindigkeit der mittels der Bewegungsvorrichtung erzeugbaren Bewegung des Hubgerüsts ist in Abhängigkeit von dem Gewicht der Last derart beeinflussbar, dass bei geringem Gewicht eine stärkere Beschleunigung oder eine höhere Geschwindigkeit möglich ist, als bei hohem Gewicht.The maximum acceleration and / or the maximum speed of the Movement device producible movement of the mast is dependent on the weight of the load influenced so that at low weight a stronger Acceleration or higher speed is possible than at high weight.

Mit besonderem Vorteil ist die Bewegungsvorrichtung von einer Neigevorrichtung für das Hubgerüst gebildet. In abgesenktem und unbeladenem Zustand kann somit das Hubgerüst schneller geneigt werden, als in angehobenem und beladenem Zustand.With particular advantage, the movement device of a tilting device for formed the mast. In lowered and unloaded state can thus the Mast tilted faster than in the raised and loaded condition.

Ebenso vorteilhaft ist es, wenn eine Bewegungsvorrichtung von einer Schubvorrichtung zum horizontalen Verschieben des Hubgerüsts gebildet ist. Das Verschieben des Hubgerüsts relativ zu dem Rahmen des Flurförderzeugs erfolgt hierbei um so schneller, je weiter das Lastaufnahmemittel abgesenkt und je geringer es beladen ist.It is equally advantageous if a movement device of a pusher is formed for horizontal displacement of the mast. Moving the Mast relative to the frame of the truck takes place here so faster, the farther the load handler lowered and the lower it is loaded.

Mit besonderem Vorteil ist die Erfindung einsetzbar, wenn das Flurförderzeug als Schubmaststapler ausgebildet ist. Bei einem Schubmaststapler können sowohl die Neigevorrichtung, als auch die Schubvorrichtung in Abhängigkeit von den genannten Betriebsparametern beeinflusst werden. Hierdurch wird, im Vergleich mit Schubmaststaplern des Standes der Technik, eine besonders große Steigerung der Warenumschlagleistung erzielt.With particular advantage, the invention can be used when the truck as Reach truck is designed. In a reach truck, both the Tilting device, as well as the pusher in response to the above Operating parameters are influenced. This will, in comparison with Reach trucks of the prior art, a particularly large increase in Goods turnover performance achieved.

Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in der schematischen Figur dargestellten Ausführungsbeispiels näher erläutert.Further advantages and details of the invention will be described with reference to the Schematic figure illustrated embodiment explained in more detail.

Die Figur zeigt ein als Schubmaststapler ausgeführtes erfindungsgemäßes Flurförderzeug. Der Schubmaststapler weist als wesentliche Bauteile einen Rahmen 1 und ein Fahrerschutzdach 2 auf, unter welchem sich der Fahrerplatz des Schubmaststaplers befindet. Räder 3 sind an dem Rahmen 1 in dem Bereich unterhalb des Fahrerplatzes und an Radarmen 4 befestigt. Die Radarme 4 sind ebenfalls Bestandteil des Rahmens 1. Ein teleskopisch ausfahrbares Hubgerüst 5 kann relativ zu dem Rahmen 1 um eine horizontale Achse 6 geneigt werden. Dargestellt ist das Hubgerüst 5 in seiner nach vorne geneigten Endstellung 5a und in seiner nach hinten geneigten Endstellung 5b. Der Neigewinkel 7 des Hubgerüsts 5 beträgt üblicherweise ca. 6 Grad. Entlang des Hubgerüsts 5 ist ein als Lastgabel ausgeführtes Lastaufnahmemittel 10 verschiebbar geführt. Die um die Achse 6 neigbare Lagerung des Hubgerüsts 5 erfolgt an einem Schubschlitten 8. Der Schubschlitten 8 ist an den Radarmen 4 in horizontaler Richtung verschiebbar geführt. Dargestellt ist der Schubschlitten 8 in seiner vorderen Endstellung und kann entlang des Schubwegs 9 in Richtung des Fahrerplatzes geschoben werden.The figure shows an inventive designed as a reach truck Truck. The reach truck has as essential components a frame. 1 and a driver's roof 2, under which the driver's seat of the Reach truck is located. Wheels 3 are on the frame 1 in the area below the driver's seat and attached to Radarmen 4. The wheel arms 4 are also Part of the frame 1. A telescopically extendable mast 5 can relative to the frame 1 are inclined about a horizontal axis 6. This is shown Mast 5 in its forwardly inclined end position 5a and in his back inclined end position 5b. The tilt angle 7 of the mast 5 is usually about 6 degrees. Along the mast 5 is designed as a fork Load-receiving means 10 slidably guided. The tiltable about the axis 6 storage of the mast 5 takes place on a slide carriage 8. The slide carriage 8 is connected to the Radarmen 4 slidably guided in the horizontal direction. Shown is the Thrust carriage 8 in its front end position and can along the push path 9 in Direction of the driver's seat are pushed.

Der Antrieb der Schubvorrichtung zum Verschieben des Schubschlittens 8 und damit des Hubgerüsts 5 entlang des Schubwegs 9 erfolgt mittels eines hydraulischen Zylinders. Gleiches gilt für den Antrieb der Neigevorrichtung zum Neigen des Hubgerüsts 5 um die Achse 8, die ebenfalls mindestens einen hydraulischen Zylinder umfasst. Die hydraulischen Zylinder sind über hydraulische Ventile mit einer Hydraulikpumpe verbunden. Die Beschleunigungen und Geschwindigkeiten der Neigebewegung und der Schubbewegung können durch entsprechendes Ansteuern der hydraulischen Ventile eingestellt werden. Möglich ist es ebenfalls, die Beschleunigungen und Geschwindigkeiten der genannten Bewegungen über die Drehzahl eines die Hydraulikpumpe antreibenden Elektromotors zu steuern, welcher dabei entsprechend mit Strom versorgt wird.The drive of the pusher for moving the sliding carriage 8 and thus of the mast 5 along the push path 9 by means of a hydraulic Cylinder. The same applies to the drive of the tilting device for tilting the Mast 5 about the axis 8, which also has at least one hydraulic cylinder includes. The hydraulic cylinders are equipped with hydraulic valves Hydraulic pump connected. The accelerations and speeds of the Tilting movement and the pushing movement can be controlled by appropriate the hydraulic valves are adjusted. It is also possible, the Accelerations and speeds of said movements over the Speed of a hydraulic motor driving the electric motor to control, which while being supplied with power accordingly.

Erfindungsgemäß werden die Hubhöhe und das Gewicht einer auf dem Lastaufnahmemittel 10 befindlichen Last kontinuierlich mittels geeigneter Messwertgeber erfasst. Diese Informationen werden in einer elektronischen Steuervorrichtung des Flurförderzeugs verarbeitet, wobei Grenzwerte für die Geschwindigkeiten und Beschleunigungen der Schubbewegung des Schubschlittens 8 und der Neigebewegung des Hubgerüsts 5 ermittelt werden. Diese Grenzwerte sind so bemessen, dass ein übermäßiges Schwingen des Hubgerüsts 5 verhindert wird. Gleichzeitig jedoch werden die Beschleunigungen und Geschwindigkeiten nicht über das erforderliche Maß hinaus beschränkt, so dass der Schubmaststapler eine optimale Warenumschlagleistung erzielt. In der elektronischen Steuervorrichtungen sind die Zusammenhänge zwischen den ermittelten Messgrößen und den zulässigen Beschleunigungen und Geschwindigkeiten als Software, beispielsweise in Form von Algorithmen oder Kennfeldern hinterlegt. Weiter ist die Steuervorrichtung mit den vom Fahrer zu betätigenden Bedienhebeln für die Neigevorrichtung und die Schubvorrichtung verbunden. Die hydraulischen Ventile bzw. der die Hydraulikpumpe antreibende Elektromotor werden von der elektronischen Steuervorrichtung nach Maßgabe der Bedienhebelstellungen direkt oder indirekt angesteuert, wobei die Beschleunigungen und Geschwindigkeiten auf die ermittelten Maximalwerte begrenzt werden.According to the invention, the lifting height and the weight of a on the Load-receiving means 10 located continuously by means of suitable Detector detected. This information will be in an electronic Control device of the truck processed, with limits for the Speeds and accelerations of the pushing movement of the sliding carriage. 8 and the tilting movement of the mast 5 are determined. These limits are like this measured that excessive swinging of the mast 5 is prevented. At the same time, however, the accelerations and speeds are not over the required extent limited, so that the reach truck is an optimal Goods turnover performance achieved. In the electronic control devices are the Relationships between the determined measured variables and the permissible ones Accelerations and speeds as software, for example in the form of Algorithms or maps deposited. Next, the control device with the from Driver to operating levers for the tilting device and the Pusher connected. The hydraulic valves or the hydraulic pump driving electric motor are by the electronic control device Subject to the control lever positions directly or indirectly controlled, the Accelerations and speeds limited to the maximum values determined become.

Claims (9)

Flurförderzeug mit einem Rahmen (1), einem Hubgerüst (5), einem entlang des Hubgerüsts (5) vertikal bewegbaren Lastaufnahmemittel (10) und mindestens einer Bewegungsvorrichtung zum Bewegen des Hubgerüsts (5) relativ zu dem Rahmen (1), dadurch gekennzeichnet, dass die Beschleunigung und/oder die Geschwindigkeit der mittels der Bewegungsvorrichtung erzeugbaren Bewegung des Hubgerüsts (5) in Abhängigkeit von mindestens einem Betriebsparameter des Flurförderzeugs beeinflussbar ist.Truck with a frame (1), a mast (5), along the mast (5) vertically movable load-carrying means (10) and at least one movement device for moving the mast (5) relative to the frame (1), characterized in that the acceleration and / or the speed of the movement of the mast (5) which can be generated by means of the movement device can be influenced as a function of at least one operating parameter of the industrial truck. Flurförderzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Betriebsparameter zumindest annähernd stufenlos erfasst wird.Truck according to claim 1, characterized in that the operating parameter is detected at least approximately infinitely. Flurförderzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Betriebsparameter von der aktuellen Hubhöhe des Lastaufnahmemittels (10) gebildet ist.Truck according to claim 1 or 2, characterized in that an operating parameter of the current lifting height of the load receiving means (10) is formed. Flurförderzeug nach Anspruch 3, dadurch gekennzeichnet, dass die maximale Beschleunigung und/oder die maximale Geschwindigkeit der mittels der Bewegungsvorrichtung erzeugbaren Bewegung des Hubgerüsts (5) in Abhängigkeit von der Hubhöhe derart beeinflussbar ist, dass bei geringer Hubhöhe eine stärkere Beschleunigung oder eine höhere Geschwindigkeit möglich ist, als bei großer Hubhöhe.Truck according to claim 3, characterized in that the maximum acceleration and / or the maximum speed of the movement of the mast (5) which can be generated by means of the movement device can be influenced as a function of the lifting height in such a way that a stronger acceleration or a higher speed is possible with a low lifting height is, as at high lift. Flurförderzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Betriebsparameter von dem Gewicht einer mit dem Lastaufnahmemittel (10) aufgenommenen Last gebildet ist.Truck according to one of claims 1 to 4, characterized in that an operating parameter of the weight of the load receiving means (10) recorded load is formed. Flurförderzeug nach Anspruch 5, dadurch gekennzeichnet, dass die maximale Beschleunigung und/oder die maximale Geschwindigkeit der mittels der Bewegungsvorrichtung erzeugbaren Bewegung des Hubgerüsts (5) in Abhängigkeit von dem Gewicht der Last derart beeinflussbar ist, dass bei geringem Gewicht eine stärkere Beschleunigung oder eine höhere Geschwindigkeit möglich ist, als bei hohem Gewicht. Truck according to claim 5, characterized in that the maximum acceleration and / or the maximum speed of the movement of the mast (5), which can be generated by means of the movement device, can be influenced in dependence on the weight of the load in such a way that, with a low weight, a stronger acceleration or a higher one Speed is possible than at high weight. Flurförderzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass eine Bewegungsvorrichtung von einer Neigevorrichtung für das Hubgerüst (5) gebildet ist.Truck according to one of claims 1 to 6, characterized in that a movement device of a tilting device for the mast (5) is formed. Flurförderzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass eine Bewegungsvorrichtung von einer Schubvorrichtung zum horizontalen Verschieben des Hubgerüsts (5) gebildet ist.Truck according to one of claims 1 to 7, characterized in that a movement device of a pusher for horizontal displacement of the mast (5) is formed. Flurförderzeug nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Flurförderzeug als Schubmaststapler ausgebildet ist.Truck according to one of claims 1 to 8, characterized in that the truck is designed as a reach truck.
EP03007553.5A 2002-05-02 2003-04-01 Lift truck with a device for moving the lift mast Expired - Lifetime EP1359113B2 (en)

Applications Claiming Priority (2)

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DE10219739A DE10219739A1 (en) 2002-05-02 2002-05-02 Industrial truck with a device for moving a mast
DE10219739 2002-05-02

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EP1359113A3 EP1359113A3 (en) 2006-05-17
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EP (1) EP1359113B2 (en)
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Also Published As

Publication number Publication date
US20030206793A1 (en) 2003-11-06
EP1359113B1 (en) 2010-10-06
EP1359113A3 (en) 2006-05-17
DE50313146D1 (en) 2010-11-18
DE10219739A1 (en) 2003-11-13
EP1359113B2 (en) 2018-04-04
US6945745B2 (en) 2005-09-20
ATE483665T1 (en) 2010-10-15

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