EP2116504B1 - Industrial truck with a lifting frame and a trailer device - Google Patents

Industrial truck with a lifting frame and a trailer device Download PDF

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Publication number
EP2116504B1
EP2116504B1 EP20090005662 EP09005662A EP2116504B1 EP 2116504 B1 EP2116504 B1 EP 2116504B1 EP 20090005662 EP20090005662 EP 20090005662 EP 09005662 A EP09005662 A EP 09005662A EP 2116504 B1 EP2116504 B1 EP 2116504B1
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EP
European Patent Office
Prior art keywords
industrial truck
drive
lifting
truck according
lifting carriage
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.)
Not-in-force
Application number
EP20090005662
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German (de)
French (fr)
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EP2116504A1 (en
Inventor
William Chevallier
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STILL SAS
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STILL SAS
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Publication of EP2116504A1 publication Critical patent/EP2116504A1/en
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Publication of EP2116504B1 publication Critical patent/EP2116504B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/08—Masts; Guides; Chains
    • 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
    • B66F9/07504—Accessories, e.g. for towing, charging, locking
    • 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
    • B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
    • 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
    • B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
    • B66F9/165—Foldable forks, i.e. where only the horizontal section moves

Definitions

  • the invention relates to an industrial truck, in particular battery-powered industrial truck, with a lifting mast on which a provided with a lifting device lift and mounted movable and driven by a lifting drive, wherein the lifting is provided with a towing device.
  • the internal transport of goods and material flow in particular the supply of material to production lines in production plants, is usually carried out by means of trailers on which the goods to be transported are transported, in particular by means of pallets within the production plant.
  • tractor forklifts For pulling one or more of these trailers trained as a tractor forklifts are used, which are provided with a corresponding Anhlindvorraum to which one or more trailers can be attached.
  • Such tractors have compact dimensions, whereby the transport trailer can be safely transported within a production plant on cramped transport routes.
  • a lifting device such as a mast, on which a forks provided with fork carriage up and down is arranged.
  • an industrial truck with a lifting mast, hinged Forks and arranged in the mast hitch be provided.
  • a forklift is from the post-published EP 2 072 454 A2 known.
  • the hitch can be attached to the lifting, so that when folded forks the truck has the function of a compact tractor for pulling the trailer and unfolded forks the function of a forklift truck for loading and unloading the trailer.
  • the arrangement of the hitch on the lifting carriage in this case also allows in a simple way a height-adjustable hitch.
  • the present invention has for its object to provide an industrial truck of the type mentioned, which has a high degree of operational safety in a simple manner.
  • the lifting drive comprises at least one traction means which is fastened with a first end and a second end to the lifting carriage, wherein the traction means is in operative connection with a drive motor.
  • the mast comprises a fixed to a drive part vertical mast, in which the lifting is arranged movable up and down, wherein in the upper region of the stationary mast, an upper guide pulley and in the lower region of the stationary mast a lower guide roller is arranged and the traction means is fastened with a first end to the lifting carriage, is guided over the upper deflection roller and the lower deflection roller and is fastened with the second end on the lifting carriage.
  • the traction means is fastened here with a first end to the lifting carriage, guided to the upper deflection roller and from this to the lower deflection roller and from the lower deflection roller back to the lifting carriage and fastened with the second end on the lifting carriage.
  • Leg such a simple mast can thus be raised and lowered with a few pulleys by means of the traction means of the lifting.
  • the first end of the traction means and the second end of the traction means are fastened to the upper region of the lifting carriage.
  • a lower guide roller is required.
  • this is achieved in a simple manner that the load-receiving means can be lowered to a level below the lower pulley, so that a space-saving design of the lifting means formed by the traction means and the pulleys and a protected arrangement of the lower pulley is achieved.
  • the upper deflection roller or the lower deflection roller is designed as a drive wheel which is in drive connection with the drive motor.
  • a deflection roller can be driven in a simple manner and thus the lifting carriage can be raised or lowered by means of the traction means.
  • the drive motor is designed according to a preferred embodiment of the invention as an electric motor, there is a simple construction of the truck without hydraulic system, which is formed by a lifting cylinder, a pump unit, a valve device and a container and the corresponding pressure medium lines, whereby the construction cost of an inventive Truck can be further reduced.
  • the drive motor is in operative connection with a braking device, in particular a spring-loaded brake.
  • a braking device designed for example as a spring brake
  • braking device of the lifting carriage can be fixed in a simple manner in not controlled drive motor and in the braking position acted upon braking device in height, so that a safe operation of the truck in the function can be achieved as a tractor.
  • the traction means is designed as a load belt, in particular a toothed belt.
  • a trained as a load belt traction means has a simple and space-saving construction compared to a lifting chain and also allows due to the elastic material properties damping of the lifting. In the function of a forklift can thus be achieved in a simple manner, a damping of the load on the load-receiving means.
  • a simple attachment of the load strap can be achieved if, according to a preferred embodiment of the invention, at least one plate-shaped attachment device for the load strap is arranged in the upper region of the lifting slide.
  • a plate-shaped fastening device can be provided for each end of the Lastriemens or a common plate-shaped fastening device can be used for both ends of the Lastriemens.
  • plate-shaped fastening devices which may have adapted to the toothed contour of a trained example as a toothed belt Lastriemens shape, a frictional and / or positive and thus secure attachment of Lastriemens be achieved on the lifting in a simple manner.
  • the upper deflection roller is arranged on an upper transverse strut of the stationary mast, a simple arrangement of the upper deflection roller results.
  • the lower deflection roller is preferably fixed in a rotationally fixed manner on a drive shaft drivingly connected to the drive motor, whereby the lower deflection roller can be driven in a simple manner by the drive motor and designed as a drive wheel.
  • the drive motor and the drive shaft can be attached to the mast. With regard to a low-cost assembly of the truck, there are advantages if the drive motor and / or the drive shaft are fastened to the drive part of the industrial truck.
  • the stationary mast is formed by two laterally spaced vertical rails, wherein a traction means is provided in the region of each rail.
  • a centrally arranged traction means can be achieved by two arranged in the region of the vertical rails traction means an improved view of the operator by the mast and in particular an improved view of the arranged on the lifting hitch.
  • a tensioning device for the traction means can be formed in a simple manner.
  • a load-receiving means formed by folding forks is provided on the lifting carriage and the towing device is arranged on a pivotable cross-beam of the lifting carriage, wherein the cross-beam is operatively connected to the folding forks.
  • the arrangement of the hitch on a pivoting cross-beam of the lifting allows in a simple way that when folded forks the hitch is pivoted and does not protrude into the load receiving area, which is easily prevented that the load on the forks can be damaged by the hitch ,
  • the foldable Fork has the truck in the function as a tractor with folded forks small dimensions.
  • the cross-beam with a drive device in particular designed as an electric cylinder electric linear drive is in drive connection
  • the hitch and the folding forks are actuated by means of only one drive device, whereby the construction cost of the truck according to the invention is further reduced.
  • the design of the drive device as an electric cylinder allows without hydraulic system safe operation of the truck in an ergonomically favorable manner without physical effort, since the pivoting of the hitch and the flaps of the forks can be performed by the operator without the operator workstation to be performed by means of the drive device. As a result, a quick and time-saving flaps of the forks and pivoting of the hitch is still achieved, which can be achieved with the truck, a high handling capacity.
  • FIG. 1 an inventive truck 1 is shown in a perspective view.
  • the truck 1 seen in the vehicle longitudinal direction on a front-side drive part 2, in which at least one steerable, not shown drive wheel is arranged.
  • the truck 1 according to the invention has a battery-electric drive system and comprises a disposed in the drive part 2 and not shown, with the drive wheel in operative connection electric traction drive motor and steering motor.
  • a power electronics unit and a service brake can be arranged in the drive part 2, a battery compartment 6 is arranged, in which a power supply device 7 of the electric drive system can be arranged, for example, a battery pack.
  • the truck 1 a driver's seat 4, which is formed by a standing platform 5. Adjacent to the driver's seat 4, a rear-side vertical frame section 8 is formed on the drive part 2, which is provided with load rollers 9.
  • a handlebar-like operating arrangement 10 is provided, which is arranged on the upper side of the drive part 2.
  • the truck according to the invention is provided with a load part formed by a mast 15.
  • the mast 15 is designed as a single mast and comprises a fixed mast 16, the two spaced in the vehicle transverse direction, vertically arranged rails 16a, 16b, which are fixed, for example, to the rear-side frame portion 8 and thus the drive part 2.
  • a lifting carriage 17 is arranged by means of not shown guide rollers up and down movable.
  • the lifting carriage 17 serves to receive a load-receiving means formed by two folding forks 18a, 18b.
  • the forks 18a, 18b each have a foldable load section 19a, 19b, which is pivotable about a substantially horizontal pivot axis on the lifting carriage 17 in its lower region is arranged.
  • the lifting carriage 17 in each case forms a vertical fork back of the corresponding fork tines 18a, 18b.
  • a towing device 20 is arranged on the lifting carriage 17.
  • the mast 15 is shown with a lifting drive according to the invention.
  • the vertical rails 16a, 16b of the stationary mast 16 of the mast 15 are connected to each other by means of a lower cross member 25 and an upper cross member 26, wherein means of these cross braces 25, 26 of the mast 16 and thus the mast 15 to the frame section 8 and thus the drive part is attached.
  • the lifting drive according to the invention comprises, in the region of each vertical rail 16a, 16b, a traction mechanism 27a, 27b designed as a load belt, which is designed, for example, as a toothed belt.
  • the traction means 27a, 27b are in each case fastened with a first end to the upper region of the lifting carriage 17 and guided in each case to an upper deflecting roller 28a, 28b arranged on the transverse strut 26.
  • the traction means 27a, 27b are guided by the upper guide rollers 28a, 28b down to lower guide rollers 29a, 29b and then guided back up and secured to the upper end of the lifting carriage 17 with the second end.
  • the lower pulleys 29a, 29b are formed here as drive wheels and are connected to a drive shaft 30 in a rotationally fixed connection, which are driven by a drive motor 32 designed as an electric motor 32 with the interposition of a transmission device 33.
  • the drive motor 32 is in this case provided with a trained example as a spring brake brake device 34.
  • the drive shaft 30 is in this case provided at the two ends with bearings 35a, 35b, by means of which the drive shaft 30 is fixed to the frame portion 8 and thus the drive part 2.
  • the drive motor 32 is also fastened to the frame section 8 and thus the drive part 2 by means of a flange formed on the transmission device 33.
  • plate-shaped fastening means 37a, 37b are provided in the upper region of the lifting carriage 17, for example on an upper cross member of the lifting carriage 17, by means of which the two ends of the load belt each force - And / or positively secured to the lifting carriage 17.
  • the lifting carriage 17 By attaching the two ends of the traction means 27a, 27b at the upper region of the lifting carriage 17, the lifting carriage 17 can be lowered with the load-receiving means formed by the fork tines 18a, 18b to a level below the lower deflection roller 29a, 29b.
  • the drive shaft 30 with the lower deflection pulleys 29a, 29b designed as drive wheels can thus be arranged above the fork tines 18a, 18b when the lifting carriage 17 is completely lowered, so that the output shaft 30 and the electric motor 31 can be arranged above the load rollers 9, as a result of which the invention Truck 1 in the vehicle longitudinal direction has compact dimensions.
  • the hitch 20 is attached to a pivotable crossbar 40 of the lifting carriage 17 which is pivotally mounted in the lower region of the lifting carriage 17 about a substantially horizontal pivot axis, and via intermediate lever 43 is in operative connection with the folding forks 18a, 18b.
  • a drive device 42 formed by an electric linear drive designed as an electric cylinder 41 is arranged on the lifting carriage 17.
  • the electric cylinder 41 is in this case arranged centrally.
  • the electric motor 31 is laterally offset with the transmission device 33, for example, in the FIG. 3 offset to the left, arranged.
  • the lifting slide 17 is firmly clamped to the traction means 27a, 27b and both positively driven during lifting and lowering, so that the lifting carriage 17 only in a control of the Electric motor 31 can be raised or lowered.
  • the lifting carriage 17 can thus be fixed in a simple manner when the electric motor 31 is not activated.
  • the trained as a load belt traction means 27a, 27b continue to allow this case in the truck according to the invention in the function of a forklift when folded out in a horizontal position forks 18a, 18b damping of a fork located on the forks 18a, 18b load.
  • the truck according to the invention can thus be derived with a small additional construction cost of a tractor whose structure is essentially the in the FIG. 1 corresponds to the structure shown, wherein on the frame portion 8 instead of the lifting mast 15 according to the invention only a rigid hitch 20 is arranged.

Description

Die Erfindung betrifft ein Flurförderzeug, insbesondere batterie-elektrisch betriebenes Flurförderzeug, mit einem Hubmast, an dem ein mit einem Lastaufnahmemittel versehener Hubschlitten auf- und bewegbar befestigt und mittels eines Hubantriebs antreibbar ist, wobei der Hubschlitten mit einer Anhängevorrichtung versehen ist.The invention relates to an industrial truck, in particular battery-powered industrial truck, with a lifting mast on which a provided with a lifting device lift and mounted movable and driven by a lifting drive, wherein the lifting is provided with a towing device.

Der innerbetriebliche Warentransport und Materialfluss, insbesondere die Materialversorgung von Produktionslinien in Produktionsbetrieben, erfolgt in der Regel mittels Anhängern, auf denen die zu transportierenden Waren insbesondere mittels Paletten innerhalb des Produktionsbetriebes transportiert werden.The internal transport of goods and material flow, in particular the supply of material to production lines in production plants, is usually carried out by means of trailers on which the goods to be transported are transported, in particular by means of pallets within the production plant.

Zum Ziehen eines oder mehrerer dieser Anhänger werden als Schlepper ausgebildete Flurförderzeuge verwendet, die mit einer entsprechenden Anhängvorrichtung versehen sind, an denen ein oder mehrere Anhänger angehängt werden können. Derartige Schlepper weisen kompakte Abmessungen auf, wodurch die Transportanhänger innerhalb eines Produktionsbetriebes auf beengten Transportwegen sicher transportiert werden können.For pulling one or more of these trailers trained as a tractor forklifts are used, which are provided with a corresponding Anhängvorrichtung to which one or more trailers can be attached. Such tractors have compact dimensions, whereby the transport trailer can be safely transported within a production plant on cramped transport routes.

Zum Be- und Entladen der Anhänger werden als Gabelstapler ausgebildete Flurförderzeuge verwendet, die mit einer Hubvorrichtung, beispielsweise einem Hubmast, versehen sind, an dem ein mit Gabelzinken versehener Gabelträger auf- und abbewegbar angeordnet ist.For loading and unloading of the trailers designed as a forklift trucks are used, which are provided with a lifting device, such as a mast, on which a forks provided with fork carriage up and down is arranged.

Hierdurch werden zum innerbetrieblichen Warentransport und Materialfluss innerhalb eines Produktionsbetriebes auf beengten Transportwegen zwei Flurförderzeuge benötigt, wobei mit dem Schlepper die Transportanhänger innerhalb des Produktionsbetriebes gezogen werden können und mittels eines Gabelstaplers die Transportanhänger be- und entladen werden können.As a result, two industrial trucks are required for in-house goods transport and material flow within a production company on cramped transport routes, with the tractor, the transport trailer can be pulled within the production and can be loaded and unloaded by means of a forklift, the transport trailer.

Um mit lediglich einem Flurförderzeug den innerbetrieblichen Warentransport durchführen zu können, kann ein Flurförderzeug mit einem Hubmast, klappbaren Gabelzinken sowie einer im Bereich des Hubmastes angeordneten Anhängevorrichtung versehen werden. Ein derartiges Flurförderzueg ist aus der nachveröffentlichten EP 2 072 454 A2 bekannt.In order to carry out the in-house transport of goods with just one truck, an industrial truck with a lifting mast, hinged Forks and arranged in the mast hitch be provided. Such a forklift is from the post-published EP 2 072 454 A2 known.

Bei einem derartigen Flurförderzeug kann die Anhängevorrichtung an dem Hubschlitten befestigt werden, so dass bei eingeklappten Gabelzinken das Flurförderzeug die Funktion eines kompakten Schleppers zum Ziehen der Anhänger und bei ausgeklappten Gabelzinken die Funktion eines Gabelstaplers zum Be- und Entladen der Anhänger aufweist. Die Anordnung der Anhängevorrichtung an dem Hubschlitten ermöglicht hierbei weiterhin auf einfache Weise eine höhenverstellbare Anhängevorrichtung.In such a truck, the hitch can be attached to the lifting, so that when folded forks the truck has the function of a compact tractor for pulling the trailer and unfolded forks the function of a forklift truck for loading and unloading the trailer. The arrangement of the hitch on the lifting carriage in this case also allows in a simple way a height-adjustable hitch.

Bei einem derartigen Flurförderzeug ist jedoch in der Funktion als Schlepper bei an die Anhängevorrichtung angehängten Anhängern der Hubschlitten, an dem die Anhängevorrichtung angeordnet ist, in der Höhe zu fixieren, um beim Abbremsen einen sicheren Betrieb des Flurförderzeugs zu erzielen. Mit gängigen hydraulischen Hubantrieben, bei denen an dem Hubschlitten eine Hubkette befestigt ist, die mit einem Hubzylinder in Wirkverbindung steht, ist eine derartige Fixierung des Hubschlittens nicht möglich.In such a truck, however, in the function as a tractor when attached to the trailer hitch trailers of the lifting on which the hitch is arranged to fix in height to achieve safe operation of the truck during braking. With current hydraulic linear actuators, where a lifting chain is attached to the lifting, which is in operative connection with a lifting cylinder, such a fixation of the lifting carriage is not possible.

Darüber hinaus ist aus der DE 10 2004 019914 A1 ein gabelstapler mit einen Hebeeinrichtung bekannt, auf welche ein von einem Rotations motor angetriebenes Zugmittel wirkt.In addition, from the DE 10 2004 019914 A1 a forklift with a lifting device known, which acts on a driven by a rotary motor traction means.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Flurförderzeug der eingangs genannten Gattung zur Verfügung zu stellen, das auf einfache Weise eine hohe Betriebsicherheit aufweist.The present invention has for its object to provide an industrial truck of the type mentioned, which has a high degree of operational safety in a simple manner.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Hubantrieb zumindest ein Zugmittel umfasst, das mit einem ersten Ende und einem zweiten Ende an dem Hubschlitten befestigt ist, wobei das Zugmittel mit einem Antriebsmotor in Wirkverbindung steht. Mit einem derartigen Zugmittel, das mit beiden Enden an dem Hubschlitten befestigt ist und mittels eines Antriebsmotors antreibbar ist, kann auf einfache Weise erzielt werden, dass der Hubschlitten sowohl beim Anheben als auch beim Absenken eingespannt ist und somit der Hubschlitten nur in Verbindung mit dem Antriebsmotor bewegbar ist. Hierdurch wird auf einfache Weise eine Fixierung des Hubschlittens bei nicht betätigtem Antriebsmotor ermöglicht, wobei sich für das Flurförderzeug in der Funktion als Schlepper mit an der Anhängevorrichtung angehängten Anhängern ein sicherer Betrieb, insbesondere beim Abbremsen, ergibt und somit das erfindungsgemäße Flurförderzeug eine hohe Betriebssicherheit aufweist.The object is achieved in that the lifting drive comprises at least one traction means which is fastened with a first end and a second end to the lifting carriage, wherein the traction means is in operative connection with a drive motor. With such a traction means, which is fastened with both ends to the lifting carriage and can be driven by means of a drive motor, it can be achieved in a simple manner that the lifting carriage is clamped both during lifting and during lowering and thus the lifting carriage only in connection with the drive motor is movable. As a result, a fixing of the lifting carriage is possible in a simple manner when the drive motor is not actuated, with the truck in the function as a tractor with attached to the hitch trailers safe operation, especially when braking results and thus the truck according to the invention has a high reliability.

Gemäß einer bevorzugten Ausführungsform der Erfindung weist der Hubmast einen an einem Antriebsteil befestigten vertikalen Standmast auf, in dem der Hubschlitten auf- und abbewegbar angeordnet ist, wobei im oberen Bereich des Standmastes eine obere Umlenkrolle und im untere Bereich des Standmastes eine untere Umlenkrolle angeordnet ist und das Zugmittel mit einem ersten Ende an dem Hubschlitten befestigt ist, über die obere Umlenkrolle sowie die untere Umlenkrolle geführt ist und mit dem zweiten Ende am Hubschlitten befestigt ist. Mit einem derartigen Einfachmast, bei dem der Lastschlitten im Standmast geführt ist, kann bei einem erfindungsgemäßen Flurförderzeug mit geringem Bauaufwand eine ausreichende Hubhöhe von ca. 1,5 m erzielt werden. Das Zugmittel ist hierbei mit einem ersten Ende an dem Hubschlitten befestigt, zur oberen Umlenkrolle und von dieser zur unteren Umlenkrolle und von der unteren Umlenkrolle zurück zum Hubschlitten geführt und mit dem zweiten Ende am Hubschlitten befestigt. Bein einem derartigen Einfachmast kann somit mit wenigen Umlenkrollen mittels des Zugmittels der Hubschlitten angehoben und abgesenkt werden.According to a preferred embodiment of the invention, the mast comprises a fixed to a drive part vertical mast, in which the lifting is arranged movable up and down, wherein in the upper region of the stationary mast, an upper guide pulley and in the lower region of the stationary mast a lower guide roller is arranged and the traction means is fastened with a first end to the lifting carriage, is guided over the upper deflection roller and the lower deflection roller and is fastened with the second end on the lifting carriage. With such a simple mast, in which the load carriage is guided in the stationary mast, a sufficient lifting height of about 1.5 m can be achieved in a truck according to the invention with low construction costs. The traction means is fastened here with a first end to the lifting carriage, guided to the upper deflection roller and from this to the lower deflection roller and from the lower deflection roller back to the lifting carriage and fastened with the second end on the lifting carriage. Leg such a simple mast can thus be raised and lowered with a few pulleys by means of the traction means of the lifting.

Besondere Vorteile sind erzielbar, wenn gemäß einer vorteilhaften Weiterbildung der Erfindung das erste Ende des Zugmittels und das zweite Ende des Zugmittels am oberen Bereich des Hubschlittens befestigt sind. Durch die Befestigung beider Enden des Zugmittels am oberen Bereich des Hubschlittens ist lediglich eine untere Umlenkrolle erforderlich. Zudem wird hierbei auf einfache Weise erzielt, dass das Lastaufnahmemittel auf ein Niveau unterhalb der unteren Umlenkrolle abgesenkt werden kann, so dass ein platzsparender Aufbau des von dem Zugmittel und den Umlenkrollen gebildeten Hubantriebs und eine geschützte Anordnung der unteren Umlenkrolle erzielbar ist.Particular advantages can be achieved if, according to an advantageous development of the invention, the first end of the traction means and the second end of the traction means are fastened to the upper region of the lifting carriage. By attaching both ends of the traction means at the top of the lifting only a lower guide roller is required. In addition, this is achieved in a simple manner that the load-receiving means can be lowered to a level below the lower pulley, so that a space-saving design of the lifting means formed by the traction means and the pulleys and a protected arrangement of the lower pulley is achieved.

Hinsichtlich eines geringen Bauaufwands ergeben sich besondere Vorteile, wenn gemäß einer bevorzugten Weiterbildungsform der Erfindung die obere Umlenkrolle oder die untere Umlenkrolle als Antriebsrad ausgebildet ist, das mit dem Antriebsmotor in trieblicher Verbindung steht. Mit einem rotatorischen Antriebsmotor kann auf einfache Weise eine Umlenkrolle angetrieben und mittels des Zugmittels somit der Hubschlitten angehoben bzw. abgesenkt werden.With regard to a low construction costs, there are particular advantages if, according to a preferred development of the invention, the upper deflection roller or the lower deflection roller is designed as a drive wheel which is in drive connection with the drive motor. With a rotary drive motor, a deflection roller can be driven in a simple manner and thus the lifting carriage can be raised or lowered by means of the traction means.

Sofern der Antriebsmotor gemäß einer bevorzugten Ausführungsform der Erfindung als Elektromotor ausgebildet ist, ergibt sich ein einfacher Aufbau des Flurförderzeugs ohne Hydraulikanlage, die von einem Hubzylinder, einem Pumpenaggregat, einer Ventileinrichtung sowie einem Behälter und den entsprechenden Druckmittelleitungen gebildet ist, wodurch der Bauaufwand für ein erfindungsgemäßes Flurförderzeug weiter verringert werden kann.If the drive motor is designed according to a preferred embodiment of the invention as an electric motor, there is a simple construction of the truck without hydraulic system, which is formed by a lifting cylinder, a pump unit, a valve device and a container and the corresponding pressure medium lines, whereby the construction cost of an inventive Truck can be further reduced.

Besondere Vorteile sind erzielbar, wenn der Antriebsmotor mit einer Bremseinrichtung, insbesondere einer Federspeicherbremse in Wirkverbindung steht. Mit einer derartigen, beispielsweise als Federspeicherbremse ausgebildeten, Bremseinrichtung kann der Hubschlitten auf einfache Weise bei nicht angesteuertem Antriebsmotor und in der Bremsstellung beaufschlagten Bremseinrichtung in der Höhe fixiert werden, so dass ein sicherer Betrieb des Flurförderzeugs in der Funktion als Schlepper erzielbar ist.Particular advantages can be achieved if the drive motor is in operative connection with a braking device, in particular a spring-loaded brake. With such, designed for example as a spring brake, braking device of the lifting carriage can be fixed in a simple manner in not controlled drive motor and in the braking position acted upon braking device in height, so that a safe operation of the truck in the function can be achieved as a tractor.

Gemäß einer bevorzugten Ausgestaltungsform der Erfindung ist das Zugmittel als Lastriemen, insbesondere Zahnriemen, ausgebildet. Ein als Lastriemen ausgebildetes Zugmittel weist gegenüber einer Hubkette einen einfachen und platzsparenden Aufbau auf und ermöglicht zudem aufgrund der elastischen Materialeigenschaften eine Dämpfung des Hubschlittens. In der Funktion als Gabelstapler kann somit weiterhin auf einfache Weise eine Dämpfung der auf dem Lastaufnahmemittel befindlichen Last erzielt werden.According to a preferred embodiment of the invention, the traction means is designed as a load belt, in particular a toothed belt. A trained as a load belt traction means has a simple and space-saving construction compared to a lifting chain and also allows due to the elastic material properties damping of the lifting. In the function of a forklift can thus be achieved in a simple manner, a damping of the load on the load-receiving means.

Eine einfache Befestigung des Lastriemens ist erzielbar, wenn gemäß einer bevorzugten Ausgestaltungsform der Erfindung im oberen Bereich des Hubschlittens mindestens eine plattenförmige Befestigungseinrichtung für den Lastriemen angeordnet ist. Hierbei kann für jedes Ende des Lastriemens eine plattenförmige Befestigungseinrichtung vorgesehen werden oder für beide Enden des Lastriemens eine gemeinsame plattenförmige Befestigungseinrichtung verwendet werden. Mit derartigen plattenförmigen Befestigungseinrichtungen, die eine an die gezahnte Kontur eines beispielsweise als Zahnriemen ausgebildeten Lastriemens angepasste Form aufweisen können, kann eine kraftschlüssige und/oder formschlüssige und somit sichere Befestigung des Lastriemens an dem Hubschlitten auf einfache Weise erzielt werden.A simple attachment of the load strap can be achieved if, according to a preferred embodiment of the invention, at least one plate-shaped attachment device for the load strap is arranged in the upper region of the lifting slide. Here, a plate-shaped fastening device can be provided for each end of the Lastriemens or a common plate-shaped fastening device can be used for both ends of the Lastriemens. With such plate-shaped fastening devices, which may have adapted to the toothed contour of a trained example as a toothed belt Lastriemens shape, a frictional and / or positive and thus secure attachment of Lastriemens be achieved on the lifting in a simple manner.

Sofern die obere Umlenkrolle an einer oberen Querstrebe des Standmastes angeordnet ist, ergibt sich eine einfache Anordnung der oberen Umlenkrolle.If the upper deflection roller is arranged on an upper transverse strut of the stationary mast, a simple arrangement of the upper deflection roller results.

Die untere Umlenkrolle ist bevorzugterweise auf einer mit dem Antriebsmotor trieblich verbundenen Antriebswelle drehfest befestigt, wodurch die untere Umlenkrolle auf einfache Weise von dem Antriebsmotor angetrieben und als Antriebsrad ausgebildet werden kann.The lower deflection roller is preferably fixed in a rotationally fixed manner on a drive shaft drivingly connected to the drive motor, whereby the lower deflection roller can be driven in a simple manner by the drive motor and designed as a drive wheel.

Der Antriebsmotor und die Antriebswelle können an dem Hubmast befestigt werden. Hinsichtlich einer günstigen Montage des Flurförderzeugs ergeben sich Vorteile, wenn der Antriebsmotor und/oder die Antriebswelle an dem Antriebsteil des Flurförderzeugs befestigt sind.The drive motor and the drive shaft can be attached to the mast. With regard to a low-cost assembly of the truck, there are advantages if the drive motor and / or the drive shaft are fastened to the drive part of the industrial truck.

Gemäß einer bevorzugten Ausgestaltungsform der Erfindung ist der Standmast von zwei seitlich beabstandeten vertikalen Schienen gebildet, wobei im Bereich jeder Schiene ein Zugmittel vorgesehen ist. Anstelle eines mittig angeordneten Zugmittels kann durch zwei im Bereich der vertikalen Schienen angeordneten Zugmittel eine verbesserte Sicht der Bedienperson durch den Hubmast und insbesondere eine verbesserte Sicht auf die an dem Hubschlitten angeordnete Anhängevorrichtung erzielt werden.According to a preferred embodiment of the invention, the stationary mast is formed by two laterally spaced vertical rails, wherein a traction means is provided in the region of each rail. Instead of a centrally arranged traction means can be achieved by two arranged in the region of the vertical rails traction means an improved view of the operator by the mast and in particular an improved view of the arranged on the lifting hitch.

Sofern die obere Umlenkrolle und/oder die untere Umlenkrolle vertikal einstellbar angeordnet ist, kann auf einfache Weise eine Spannvorrichtung für das Zugmittel gebildet werden.If the upper deflection roller and / or the lower deflection roller is arranged vertically adjustable, a tensioning device for the traction means can be formed in a simple manner.

Zweckmäßigerweise ist an dem Hubschlitten ein von klappbaren Gabelzinken gebildetes Lastaufnahmemittel vorgesehen und ist die Anhängevorrichtung an einer schwenkbaren Quertraverse des Hubschlittens angeordnet, wobei die Quertraverse mit den klappbaren Gabelzinken in Wirkverbindung steht. Die Anordnung der Anhängevorrichtung an einer schwenkbaren Quertraverse des Hubschlittens ermöglicht auf einfache Weise, dass bei ausgeklappten Gabelzinken die Anhängevorrichtung eingeschwenkt ist und nicht in den Lastaufnahmebereich ragt, wodurch auf einfache Weise verhindert wird, dass die auf den Gabelzinken befindliche Ladung durch die Anhängevorrichtung beschädigt werden kann. Durch die klappbaren Gabelzinken weist das Flurförderzeug in der Funktion als Schlepper mit eingeklappten Gabelzinken geringe Abmessungen auf. Mit einer Quertraverse kann hierbei auf einfache Weise die Anhängevorrichtung verschwenkt und gleichzeitig die Gabelzinken geklappt werden, wodurch ein schneller Wechsel des erfindungsgemäßen Flurförderzeugs von der Funktion als Schlepper in die Funktion als Gabelstapler und ein sicherer Betrieb in der jeweiligen Funktion erzielbar ist.Conveniently, a load-receiving means formed by folding forks is provided on the lifting carriage and the towing device is arranged on a pivotable cross-beam of the lifting carriage, wherein the cross-beam is operatively connected to the folding forks. The arrangement of the hitch on a pivoting cross-beam of the lifting allows in a simple way that when folded forks the hitch is pivoted and does not protrude into the load receiving area, which is easily prevented that the load on the forks can be damaged by the hitch , By the foldable Fork has the truck in the function as a tractor with folded forks small dimensions. With a crossbeam this can be easily pivoted the hitch and at the same time the forks are folded, whereby a quick change of the truck according to the invention from the function as a tractor in the function as a forklift and safe operation in the respective function can be achieved.

Sofern gemäß einer bevorzugten Ausführungsform der Erfindung die Quertraverse mit einer Antriebsvorrichtung, insbesondere einem als Elektrozylinder ausgebildeten elektrischen Linearantrieb, in trieblicher Verbindung steht, sind die Anhängevorrichtung sowie die klappbaren Gabelzinken mittels lediglich einer Antriebsvorrichtung betätigbar, wodurch der Bauaufwand des erfindungsgemäßen Flurförderzeugs weiter verringert wird. Die Ausbildung der Antriebsvorrichtung als Elektrozylinder ermöglicht ohne Hydraulikanlage einen sicheren Betrieb des Flurförderzeugs in ergonomisch günstiger Weise ohne körperliche Anstrengungen, da das Ausschwenken der Anhängevorrichtung und das Klappen der Gabelzinken mittels der Antriebsvorrichtung von der Bedienperson ohne den Bedienarbeitsplatz verlassen zu müssen durchgeführt werden kann. Hierdurch wird weiterhin ein schnelles und zeitsparendes Klappen der Gabelzinken und Verschwenken der Anhängevorrichtung erzielt, wodurch mit dem Flurförderzeug eine hohe Umschlagleistung erzielt werden kann.If according to a preferred embodiment of the invention, the cross-beam with a drive device, in particular designed as an electric cylinder electric linear drive is in drive connection, the hitch and the folding forks are actuated by means of only one drive device, whereby the construction cost of the truck according to the invention is further reduced. The design of the drive device as an electric cylinder allows without hydraulic system safe operation of the truck in an ergonomically favorable manner without physical effort, since the pivoting of the hitch and the flaps of the forks can be performed by the operator without the operator workstation to be performed by means of the drive device. As a result, a quick and time-saving flaps of the forks and pivoting of the hitch is still achieved, which can be achieved with the truck, a high handling capacity.

Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in den schematischen Figuren dargestellten Ausführungsbeispiels näher erläutert. Hierbei zeigen

Figur 1
ein erfindungsgemäßes Flurförderzeug in einer perspektivischen Ansicht,
Figur 2
den Hubmast des erfindungsgemäßen Flurförderzeugs in einer perspektivischen Darstellung,
Figur 3
den Hubmast in einer Ansicht von vorne,
Figur 4
den Hubmast in einer perspektivischen Ansicht von hinten und
Figur 5
den Hubmast in einer perspektivischen Ansicht von vorne.
Further advantages and details of the invention will be explained in more detail with reference to the embodiment shown in the schematic figures. Show here
FIG. 1
an inventive truck in a perspective view,
FIG. 2
the mast of the truck according to the invention in a perspective view,
FIG. 3
the mast in a front view,
FIG. 4
the mast in a perspective view from behind and
FIG. 5
the mast in a perspective view from the front.

In der Figur 1 ist ein erfindungsgemäßes Flurförderzeug 1 in einer perspektivischen Ansicht dargestellt. Das Flurförderzeug 1 weist in Fahrzeuglängsrichtung gesehen einen frontseitigen Antriebsteil 2 auf, in dem zumindest ein lenkbares, nicht mehr dargestelltes Antriebsrad angeordnet ist. Das erfindungsgemäße Flurförderzeug 1 weist ein batterie-elektrisches Antriebssystem auf und umfasst einen in dem Antriebsteil 2 angeordneten und nicht mehr dargestellten, mit dem Antriebsrad in Wirkverbindung stehenden elektrischen Fahrantriebsmotor und Lenkmotor. In dem Antriebsteil 2 können weiterhin eine Leistungselektronikeinheit und eine Betriebsbremse angeordnet werden. In dem Antriebsteil 2 ist ein Batteriefach 6 angeordnet, in dem eine Energieversorgungseinrichtung 7 des elektrischen Antriebssystems angeordnet werden kann, beispielsweise ein Batterieblock.In the FIG. 1 an inventive truck 1 is shown in a perspective view. The truck 1, seen in the vehicle longitudinal direction on a front-side drive part 2, in which at least one steerable, not shown drive wheel is arranged. The truck 1 according to the invention has a battery-electric drive system and comprises a disposed in the drive part 2 and not shown, with the drive wheel in operative connection electric traction drive motor and steering motor. In the drive part 2, furthermore, a power electronics unit and a service brake can be arranged. In the drive part 2, a battery compartment 6 is arranged, in which a power supply device 7 of the electric drive system can be arranged, for example, a battery pack.

Anschließend an das Antriebsteil 2 und das Batteriefach 6 weist das Flurförderzeug 1 einen Fahrerplatz 4 auf, der von einer Standplattform 5 gebildet ist. Angrenzend an den Fahrerplatz 4 ist an dem Antriebsteil 2 ein heckseitiger vertikaler Rahmenabschnitt 8 ausgebildet, der mit Lastrollen 9 versehen ist.Subsequent to the drive part 2 and the battery compartment 6, the truck 1 a driver's seat 4, which is formed by a standing platform 5. Adjacent to the driver's seat 4, a rear-side vertical frame section 8 is formed on the drive part 2, which is provided with load rollers 9.

Zur Bedienung des Flurförderzeugs 1 ist eine lenkerähnliche Bedienanordnung 10 vorgesehen, die an der Oberseite des Antriebsteils 2 angeordnet ist.To operate the truck 1, a handlebar-like operating arrangement 10 is provided, which is arranged on the upper side of the drive part 2.

An dem heckseitigen Rahmenabschnitt 8 oder angrenzend an den heckseitigen Rahmenabschnitt 8 ist das erfindungsgemäße Flurförderzeug mit einem von einem Hubmast 15 gebildeten Lastteil versehen. Der Hubmast 15 ist als Einfachmast ausgebildet und umfasst einen feststehenden Standmast 16, der zwei in Fahrzeugquerrichtung beabstandete, vertikal angeordnete Schienen 16a, 16b aufweist, die beispielsweise an dem heckseitigen Rahmenabschnitt 8 und somit dem Antriebsteil 2 befestigt sind. In den vertikalen Schienen 16a, 16b ist ein Hubschlitten 17 mittels nicht mehr dargestellter Führungsrollen auf- und abbewegbar angeordnet.At the rear frame portion 8 or adjacent to the rear frame portion 8 the truck according to the invention is provided with a load part formed by a mast 15. The mast 15 is designed as a single mast and comprises a fixed mast 16, the two spaced in the vehicle transverse direction, vertically arranged rails 16a, 16b, which are fixed, for example, to the rear-side frame portion 8 and thus the drive part 2. In the vertical rails 16a, 16b, a lifting carriage 17 is arranged by means of not shown guide rollers up and down movable.

Der Hubschlitten 17 dient zur Aufnahme eines von zwei klappbaren Gabelzinken 18a, 18b gebildeten Lastaufnahmemittels. Die Gabelzinken 18a, 18b weisen jeweils einen klappbaren Lastabschnitt 19a, 19b auf, der um eine im Wesentlichen horizontale Schwenkachse an dem Hubschlitten 17 in dessen unteren Bereich schwenkbar angeordnet ist. Der Hubschlitten 17 bildet hierbei jeweils einen vertikalen Gabelrücken der entsprechenden Gabelzinken 18a, 18b.The lifting carriage 17 serves to receive a load-receiving means formed by two folding forks 18a, 18b. The forks 18a, 18b each have a foldable load section 19a, 19b, which is pivotable about a substantially horizontal pivot axis on the lifting carriage 17 in its lower region is arranged. The lifting carriage 17 in each case forms a vertical fork back of the corresponding fork tines 18a, 18b.

Weiterhin ist an dem Hubschlitten 17 eine Anhängevorrichtung 20 angeordnet.Furthermore, a towing device 20 is arranged on the lifting carriage 17.

In den Figuren 2 bis 5 ist der Hubmast 15 mit einem erfindungsgemäßen Hubantrieb dargestellt.In the FIGS. 2 to 5 the mast 15 is shown with a lifting drive according to the invention.

Die vertikalen Schienen 16a, 16b des Standmastes 16 des Hubmastes 15 sind mittels einer unteren Querstrebe 25 und einer oberen Querstrebe 26 miteinander verbunden, wobei mittels dieser Querstreben 25, 26 der Standmast 16 und somit der Hubmast 15 an dem Rahmenabschnitt 8 und somit dem Antriebsteil 2 befestigt ist.The vertical rails 16a, 16b of the stationary mast 16 of the mast 15 are connected to each other by means of a lower cross member 25 and an upper cross member 26, wherein means of these cross braces 25, 26 of the mast 16 and thus the mast 15 to the frame section 8 and thus the drive part is attached.

Der erfindungsgemäße Hubantrieb umfasst im Bereich jeder vertikalen Schiene 16a, 16b ein als Lastriemen ausgebildetes Zugmittel 27a, 27b, das beispielsweise als Zahnriemen ausgestaltet ist.The lifting drive according to the invention comprises, in the region of each vertical rail 16a, 16b, a traction mechanism 27a, 27b designed as a load belt, which is designed, for example, as a toothed belt.

Die Zugmittel 27a, 27b sind hierbei jeweils mit einem ersten Ende am oberen Bereich des Hubschlittens 17 befestigt und zu jeweils einer an der Querstrebe 26 angeordneten oberen Umlenkrolle 28a, 28b geführt. Die Zugmittel 27a, 27b sind von den oberen Umlenkrollen 28a, 28b nach unten zu unteren Umlenkrollen 29a, 29b geführt und anschließend wieder nach oben geführt und am oberen Bereich des Hubschlittens 17 mit dem zweiten Ende befestigt.The traction means 27a, 27b are in each case fastened with a first end to the upper region of the lifting carriage 17 and guided in each case to an upper deflecting roller 28a, 28b arranged on the transverse strut 26. The traction means 27a, 27b are guided by the upper guide rollers 28a, 28b down to lower guide rollers 29a, 29b and then guided back up and secured to the upper end of the lifting carriage 17 with the second end.

Die unteren Umlenkrollen 29a, 29b sind hierbei als Antriebsräder ausgebildet und stehen mit einer Antriebswelle 30 in drehfester Verbindung, die von einem als Elektromotor 31 ausgebildeten Antriebsmotor 32 unter Zwischenschaltung einer Getriebeeinrichtung 33 angetrieben werden. Der Antriebsmotor 32 ist hierbei mit einer beispielsweise als Federspeicherbremse ausgebildeten Bremseinrichtung 34 versehen.The lower pulleys 29a, 29b are formed here as drive wheels and are connected to a drive shaft 30 in a rotationally fixed connection, which are driven by a drive motor 32 designed as an electric motor 32 with the interposition of a transmission device 33. The drive motor 32 is in this case provided with a trained example as a spring brake brake device 34.

Die Antriebwelle 30 ist hierbei an den beiden Enden mit Lagerungen 35a, 35b versehen, mittels denen die Antriebswelle 30 an dem Rahmenabschnitt 8 und somit dem Antriebsteil 2 befestigt ist. Der Antriebsmotor 32 ist ebenfalls mittels eines an der Getriebeeinrichtung 33 ausgebildete Flansches an dem Rahmenabschnitt 8 und somit dem Antriebsteil 2 befestigt.The drive shaft 30 is in this case provided at the two ends with bearings 35a, 35b, by means of which the drive shaft 30 is fixed to the frame portion 8 and thus the drive part 2. The drive motor 32 is also fastened to the frame section 8 and thus the drive part 2 by means of a flange formed on the transmission device 33.

Zur Befestigung der beiden Enden der jeweiligen als Lastriemen ausgebildeten Zugmittel 27a, 27b am Hubschlitten 17 sind im oberen Bereich des Hubschlittens 17, beispielsweise an einer oberen Querstrebe des Hubschlittens 17, plattenförmige Befestigungseinrichtungen 37a, 37b vorgesehen, mittels denen die beiden Enden der Lastriemen jeweils kraft- und/oder formschlüssig an dem Hubschlitten 17 befestigt sind.For attachment of the two ends of the respective formed as a load belt traction means 27a, 27b on the lifting slide 17 plate-shaped fastening means 37a, 37b are provided in the upper region of the lifting carriage 17, for example on an upper cross member of the lifting carriage 17, by means of which the two ends of the load belt each force - And / or positively secured to the lifting carriage 17.

Durch die Befestigung der beiden Enden der Zugmittel 27a, 27b am oberen Bereich des Hubschlittens 17 kann der Hubschlitten 17 mit dem von den Gabelzinken 18a, 18b gebildete Lastaufnahmemittel auf ein Niveau unterhalb der unteren Umlenkrolle 29a, 29b abgesenkt werden. Die Antriebswelle 30 mit den unteren, als Antriebsrädern ausgebildete Umlenkrollen 29a, 29b kann somit bei vollständig abgesenktem Hubschlitten 17 oberhalb der Gabelzinken 18a, 18b angeordnet werden, so dass die Abtriebswelle 30 und der Elektromotor 31 oberhalb der Lastrollen 9 angeordnet werden kann, wodurch das erfindungsgemäße Flurförderzeug 1 in Fahrzeugslängsrichtung kompakte Abmessungen aufweist.By attaching the two ends of the traction means 27a, 27b at the upper region of the lifting carriage 17, the lifting carriage 17 can be lowered with the load-receiving means formed by the fork tines 18a, 18b to a level below the lower deflection roller 29a, 29b. The drive shaft 30 with the lower deflection pulleys 29a, 29b designed as drive wheels can thus be arranged above the fork tines 18a, 18b when the lifting carriage 17 is completely lowered, so that the output shaft 30 and the electric motor 31 can be arranged above the load rollers 9, as a result of which the invention Truck 1 in the vehicle longitudinal direction has compact dimensions.

Die Anhängevorrichtung 20 ist an einer schwenkbaren Quertraverse 40 des Hubschlittens 17 befestigt, die im unteren Bereich des Hubschlittens 17 um eine im Wesentlichen horizontale Schwenkachse schwenkbar angeordnet ist, und über Zwischenhebel 43 jeweils mit den klappbaren Gabelzinken 18a, 18b in Wirkerbindung steht. Zur Betätigung der Quertraverse 40 ist an dem Hubschlitten 17 eine von einem als Elektrozylinder 41 ausgebildeten elektrischen Linearantrieb gebildete Antriebsvorrichtung 42 angeordnet.The hitch 20 is attached to a pivotable crossbar 40 of the lifting carriage 17 which is pivotally mounted in the lower region of the lifting carriage 17 about a substantially horizontal pivot axis, and via intermediate lever 43 is in operative connection with the folding forks 18a, 18b. For actuating the cross-beam 40, a drive device 42 formed by an electric linear drive designed as an electric cylinder 41 is arranged on the lifting carriage 17.

Der Elektrozylinder 41 ist hierbei mittig angeordnet. Um in Längsrichtung einen kompakten Bauraumbedarf zu erzielen, ist der Elektromotor 31 mit der Getriebeeinrichtung 33 seitlich versetzt, beispielsweise nach in der Figur 3 links versetzt, angeordnet.The electric cylinder 41 is in this case arranged centrally. In order to achieve a compact space requirement in the longitudinal direction, the electric motor 31 is laterally offset with the transmission device 33, for example, in the FIG. 3 offset to the left, arranged.

Mit dem erfindungsgemäßen, von den als Lastriemen ausgebildeten Zugmitteln 27a, 27b, die mit beiden Enden an dem Hubschlitten 17 befestigt sind, gebildeten Hubantrieb, die mittels des Elektromotors 31 angetrieben sind, ist der Hubschlitten 17 an den Zugmitteln 27a, 27b fest eingespannt und sowohl beim Heben als auch beim Senken zwangsgeführt, so dass der Hubschlitten 17 nur bei einer Ansteuerung des Elektromotors 31 angehoben bzw. abgesenkt werden kann. In Verbindung mit der an dem Elektromotor 31 angeordneten Bremseinrichtung 34 kann somit der Hubschlitten 17 bei nicht angesteuertem Elektromotor 31 auf einfache Weise fixiert werden. Bei in eine vertikale Stellung hochgeklappten Gabelzinken 18a, 18b und an die Anhängevorrichtung 20 angehängten Tansportanhängern ist somit ein sicherer Betrieb des Flurförderzeugs in der Funktion als Schlepper, insbesondere während des Abbremsens, erzielbar.With the invention, formed by the trained as a load belt traction means 27a, 27b, which are attached to both ends of the lifting slide 17, formed lifting drive, which are driven by the electric motor 31, the lifting slide 17 is firmly clamped to the traction means 27a, 27b and both positively driven during lifting and lowering, so that the lifting carriage 17 only in a control of the Electric motor 31 can be raised or lowered. In conjunction with the braking device 34 arranged on the electric motor 31, the lifting carriage 17 can thus be fixed in a simple manner when the electric motor 31 is not activated. When folded up in a vertical position forks 18a, 18b and attached to the hitch 20 Tanzan trailer thus safe operation of the truck in the function of a tractor, especially during braking, achievable.

Die als Lastriemen ausgebildeten Zugmittel 27a, 27b ermöglichen hierbei weiterhin bei dem erfindungsgemäßen Flurförderzeug 1 in der Funktion als Gabelstapler bei in eine horizontale Stellung ausgeklappten Gabelzinken 18a, 18b eine Dämpfung einer auf den Gabelzinken 18a, 18b befindlichen Last.The trained as a load belt traction means 27a, 27b continue to allow this case in the truck according to the invention in the function of a forklift when folded out in a horizontal position forks 18a, 18b damping of a fork located on the forks 18a, 18b load.

Durch die Anordnung der beiden Zugmittel 27a, 27b im Bereich der vertikalen Säulen 16a, 16b des Standmastes 16 des Hubmastes 15 wird hierbei eine nahezu ungestörte Sicht der auf der Fahrerstandplattform 5 stehenden Bedienperson auf die Gabelzinken 18a, 18b sowie die Anhängevorrichtung 20 erzielt.The arrangement of the two traction means 27a, 27b in the region of the vertical columns 16a, 16b of the stand mast 16 of the mast 15 a nearly undisturbed view of standing on the operator platform platform 5 operator on the forks 18a, 18b and the hitch 20 is achieved.

Durch den erfindungsgemäßen Hubantrieb und den Verzicht auf eine Hydraulikanlage ist weiterhin ein verringerter Bauaufwand des erfindungsgemäßen Flurförderzeugs 1 erzielbar. Darüber hinaus kann das erfindungsgemäße Flurförderzeug hierdurch mit geringem zusätzlichen Bauaufwand von einem Schlepper abgeleitet werden, dessen Aufbau im Wesentlichen dem in der Figur 1 dargestellten Aufbau entspricht, wobei an dem Rahmenabschnitt 8 anstelle des erfindungsgemäßen Hubmastes 15 lediglich eine starre Anhängevorrichtung 20 angeordnet ist.By the lifting drive according to the invention and the abandonment of a hydraulic system, a reduced construction cost of the truck 1 according to the invention is further achievable. In addition, the truck according to the invention can thus be derived with a small additional construction cost of a tractor whose structure is essentially the in the FIG. 1 corresponds to the structure shown, wherein on the frame portion 8 instead of the lifting mast 15 according to the invention only a rigid hitch 20 is arranged.

Claims (15)

  1. Industrial truck (1), in particular a battery-powered industrial truck, with a lifting mast (15), on which a lifting carriage (17), provided with a load pickup means, is fastened such that it can move up and down and is drivable by means of a lifting drive, the lifting carriage (17) being provided with a towing hitch device (20), and the lifting drive comprising at least one tensioning means (27a; 27b), which is fastened with a first end and a second end on the lifting carriage (17), the tensioning means (27a; 27b) being operatively connected to a drive motor (32).
  2. Industrial truck according to Claim 1, characterized in that the lifting mast (15) has a vertical stationary mast (16) which is fastened to a drive part (2) and in which the lifting carriage (17) is arranged such that it can move up and down, wherein an upper deflecting roller (28a; 28b) is arranged in the upper region of the stationary mast (16) and a lower deflecting roller (29a; 29b) is arranged in the lower region of the stationary mast (16), and the tensioning means (27a; 27b) is fastened with a first end to the lifting carriage (17), is guided via the upper deflecting roller (28a; 28b) and the lower deflecting roller (29a; 29b), and is fastened with the second end to the lifting carriage (17).
  3. Industrial truck according to Claim 1 or 2, characterized in that the first end of the tensioning means (27a; 27b) and the second end of the tensioning means (27a; 27b) are fastened in the upper region of the lifting carriage (17).
  4. Industrial truck according to Claim 2 or 3, characterized in that the upper deflecting roller (28a; 28b) or the lower deflecting roller (29a; 29b) is in the form of a drive wheel, which is drive-connected to the drive motor (32).
  5. Industrial truck according to one of Claims 1 to 4, characterized in that the drive motor (32) is in the form of an electric motor (31).
  6. Industrial truck according to one of Claims 1 to 5, characterized in that the drive motor (32) is operatively connected to a braking device (34), in particular a spring-loaded brake.
  7. Industrial truck according to one of Claims 1 to 6, characterized in that the tensioning means (27a; 27b) is in the form of a load belt, in particular a toothed belt.
  8. Industrial truck according to Claim 7, characterized in that at least one plate-shaped fastening device (37a; 37b) for the load belt (27a; 27b) is arranged in the upper region of the lifting carriage (17).
  9. Industrial truck according to one of Claims 2 to 8, characterized in that the upper deflecting roller (28a; 28b) is arranged on an upper transverse strut (26) of the stationary mast (16).
  10. Industrial truck according to one of Claims 2 to 9, characterized in that the lower deflecting roller (29a; 29b) is fastened, fixed against rotation, on a drive shaft (30) which is drive-connected to the drive motor (32).
  11. Industrial truck according to Claim 10, characterized in that the drive motor (32) and/or the drive shaft (30) is/are fastened on the drive part (2) of the industrial truck (1).
  12. Industrial truck according to one of Claims 2 to 11, characterized in that the stationary mast (16) is formed by two laterally spaced-apart vertical rails (16a; 16b), wherein a tensioning means (27a; 27b) is provided in the region of each rail (16a; 16b).
  13. Industrial truck according to one of Claims 2 to 12, characterized in that the upper deflecting roller (28a; 28b) and/or the lower deflecting roller (29a; 29b) is/are arranged vertically adjustably.
  14. Industrial truck according to one of the preceding claims, characterized in that a load pickup means formed by foldable fork prongs (18a; 18b) is provided on the lifting carriage (17), and the towing hitch device (20) is arranged on a pivotable crossbar (40) of the lifting carriage (17), wherein the crossbar (40) is operatively connected to the foldable fork prongs (18a; 18b).
  15. Industrial truck according to Claim 14, characterized in that the crossbar (40) is drive-connected to a drive apparatus (42), in particular an electric linear drive in the form of an electric cylinder (41).
EP20090005662 2008-05-07 2009-04-22 Industrial truck with a lifting frame and a trailer device Not-in-force EP2116504B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008022485 2008-05-07
DE102008023529A DE102008023529A1 (en) 2008-05-07 2008-05-14 Truck with a lifting mast and a hitch

Publications (2)

Publication Number Publication Date
EP2116504A1 EP2116504A1 (en) 2009-11-11
EP2116504B1 true EP2116504B1 (en) 2013-02-20

Family

ID=41152776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090005662 Not-in-force EP2116504B1 (en) 2008-05-07 2009-04-22 Industrial truck with a lifting frame and a trailer device

Country Status (2)

Country Link
EP (1) EP2116504B1 (en)
DE (1) DE102008023529A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103991817A (en) * 2013-02-15 2014-08-20 萨比股份公司 Electric lifter
CN104876163A (en) * 2015-05-11 2015-09-02 安徽合力股份有限公司 Forward-moving electric fork-lift truck having battery entrance-exit self-centering mechanism
CN107352278A (en) * 2017-08-10 2017-11-17 徐州德坤电气科技有限公司 A kind of control method of logistics code fetch system handler
CN107416733A (en) * 2017-06-16 2017-12-01 安徽宇锋仓储设备有限公司 A kind of lift truck attachment
CN107499802A (en) * 2017-08-10 2017-12-22 徐州德坤电气科技有限公司 A kind of application method of logistics code fetch car suitable for freight container

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1402458B1 (en) * 2010-10-27 2013-09-13 Orsi Group S R L DEVICE FOR ELEVATOR TROLLEY
IT201600081455A1 (en) * 2016-08-03 2018-02-03 Angelo Ceresa UPRIGHT POST FOR ELEVATOR TROLLEY WITH BELTS AND PIPES IN SUPPORT OF THE SAME
CN107380869B (en) * 2017-08-10 2019-02-05 徐州德坤电气科技有限公司 A kind of application method of the logistics code fetch system suitable for freight container
EP3560885B1 (en) * 2018-04-16 2021-01-13 STILL S.p.A. Industrial truck
TWI830396B (en) * 2022-09-22 2024-01-21 林昭炫 Lifting and lowering control system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1200736A (en) * 1967-04-11 1970-07-29 Crown Controls Ltd Improvements in and relating to fork lift trucks
JPS5822769A (en) * 1981-07-31 1983-02-10 Suzuki Tanko Co Ltd Lifting device for agricultural tractor and trailer
DE3835500A1 (en) * 1988-10-19 1990-04-26 Werner K Mayer Stacker truck
GB2290281B (en) * 1994-06-17 1997-08-06 Cleco Ltd Telescopic mast order picker truck
DE102004019914B4 (en) * 2004-04-21 2008-01-03 Ab Skf Multi-stage lifting system for a forklift
EP2072454B1 (en) 2007-12-21 2011-03-09 Still Sas Industrial truck with a lifting device and a trailer device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103991817A (en) * 2013-02-15 2014-08-20 萨比股份公司 Electric lifter
CN104876163A (en) * 2015-05-11 2015-09-02 安徽合力股份有限公司 Forward-moving electric fork-lift truck having battery entrance-exit self-centering mechanism
CN107416733A (en) * 2017-06-16 2017-12-01 安徽宇锋仓储设备有限公司 A kind of lift truck attachment
CN107352278A (en) * 2017-08-10 2017-11-17 徐州德坤电气科技有限公司 A kind of control method of logistics code fetch system handler
CN107499802A (en) * 2017-08-10 2017-12-22 徐州德坤电气科技有限公司 A kind of application method of logistics code fetch car suitable for freight container

Also Published As

Publication number Publication date
DE102008023529A1 (en) 2009-11-12
EP2116504A1 (en) 2009-11-11

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