EP2165966B1 - Industrial truck with a load bearer comprising at least one foldable load section - Google Patents

Industrial truck with a load bearer comprising at least one foldable load section Download PDF

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Publication number
EP2165966B1
EP2165966B1 EP20090010945 EP09010945A EP2165966B1 EP 2165966 B1 EP2165966 B1 EP 2165966B1 EP 20090010945 EP20090010945 EP 20090010945 EP 09010945 A EP09010945 A EP 09010945A EP 2165966 B1 EP2165966 B1 EP 2165966B1
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EP
European Patent Office
Prior art keywords
industrial truck
load
lifting
stop means
truck according
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
EP20090010945
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German (de)
French (fr)
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EP2165966A3 (en
EP2165966A2 (en
Inventor
Yoann Vincent
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STILL SAS
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STILL SAS
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Publication date
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Publication of EP2165966A2 publication Critical patent/EP2165966A2/en
Publication of EP2165966A3 publication Critical patent/EP2165966A3/en
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Publication of EP2165966B1 publication Critical patent/EP2165966B1/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
    • B66F9/12—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-electrically operated truck, with a lifting device, in particular a lifting mast on which a provided with a lifting device lifting and arranged movable and driven by a lifting drive, wherein the load receiving means formed by at least one folding load section is, which is pivotable about a substantially horizontal pivot axis between a deployed working position and a retracted rest position, wherein the load portion is provided with an opposite to the pivot axis arranged lever arm, which is engageable with a stop means, wherein by operating the lifting device of the load section is pivotable between the working position and the rest position.
  • a load handling device for a truck with two forks, each having a folding load section is from the DD 58 268 known.
  • a hydraulic cylinder is provided for each folding load section on each fork prong, which is arranged on the fork back in the region facing the steerer tube.
  • the arrangement of the hydraulic cylinder in the fork shaft facing area leads to an increase in the Vorbauureses.
  • a guard should be provided to protect the hydraulic cylinder and the load on the steerer from damage.
  • the fork prong is usually arranged on a lifting carriage, which is arranged in a lifting mast up and down.
  • the present invention has for its object to provide a truck of the type mentioned are available, which has a low construction cost and a low production cost in terms of folding load sections.
  • stop means is actuated by means of an actuating device between an operating position and an inoperative position, wherein the actuating device is formed by a hydraulic cylinder or by an electric drive, in particular an electric linear drive.
  • the hinged load section can be folded by lifting the lifting by means of the lifting drive and thus upon actuation of the lifting device by means of Hubantriebs from the working position to the rest position or by lowering the lifting carriage by means of Hubantriebs and thus be unfolded during operation of the lifting device by means of the lifting drive from the rest position to the working position.
  • no additional drive device is required by the inventive use of the lifting drive, resulting in a low construction cost. Overall, this results in a truck in which the load sections of the lifting device can be folded out and folded in a simple manner and with low construction costs.
  • the stop means is actuated by means of an actuating device between an operating position and an inoperative position.
  • the actuating device may be formed by a hydraulic cylinder. If the actuating device is formed by an electric drive, in particular an electric linear drive, results in a low construction cost for the actuator.
  • the electric Drive can be formed for example by a spindle drive, an electric cylinder or a magnet.
  • the stop means is in accordance with a preferred embodiment of the invention in the operating position with the lever arm for pivoting the load section operatively engageable.
  • In the operating position can thus be folded by lifting the lifting by means of the lifting drive by an operative connection between the lever arm and the stop means of the load from the working position to the rest position and be folded accordingly by lowering the lifting means of the lifting drive the load section from the rest position to the working position.
  • stop means When located in the inoperative position stop means the stop means when lifting and lowering of the lifting carriage does not come into contact with the lever arm, whereby the load section is in the unfolded working position and the lifting can be raised and lowered by the lifting drive.
  • the stop means can be moved in rotation from the operating position to the inoperative position.
  • a stop means can be formed in a simple manner, which cooperates in the operating position with the lever arm of the load section.
  • the stop means is translationally movable. With a translational and thus longitudinally displaceable stop means results in a low construction cost for the movable between the operating position and the inoperative position stop means.
  • the stop means may in this case be movable in the transverse direction of the truck and thus transversely to the load section. If the stop means according to a preferred embodiment of the invention in the longitudinal direction of the load section is longitudinally displaceable movable, a space-saving arrangement of the stop means can be achieved.
  • the load section is provided with lateral cheeks, on each of which a bearing bore for the pivot axis is formed, wherein on at least one cheek of the lever arm is formed.
  • a rotatable roller is arranged on the lever arm, the friction and wear occurring between the lever arm and the stop means during sliding of the lever arm along the stop means can be reduced in a simple manner during folding or unfolding of the load section.
  • a lever arm is formed on each side cheek, between which a receiving bolt is arranged.
  • the rotatable roller can be arranged in a simple manner.
  • the stop means is mounted according to an advantageous embodiment of the invention on a guide, in particular a linear guide, whereby the forces occurring during folding and unfolding of the load section can be supported in a simple manner on the guide on the truck.
  • a stop for the operating position and the inoperative position of the stop means can be formed by such a guide in a simple manner.
  • the stop means is formed according to an advantageous embodiment of a stop pin.
  • a stop pin a stop means for the lever arm or arranged on the lever arm rotatable roller can be formed with low construction costs.
  • the stop means is arranged according to an advantageous embodiment of the invention in the lower region of the lifting device. This ensures that the lifting carriage is only slightly raised when folded into the rest position load sections and is in the lowered position.
  • the stop means may be fixed to the truck according to a preferred embodiment, for example, on a side adjacent to the lifting device arranged vertical frame portion. However, it is also possible to attach the stop means to the lifting device, in particular a stationary mast, in order to achieve a folding and unfolding of the load section in conjunction with the lever arm.
  • the lifting carriage is designed as a fork carriage and the load-receiving means formed by two laterally spaced forks, each having a fork back, on which a load portion is pivotally mounted and with which the fork is attached to the lifting.
  • the fork-shaped load-receiving means is thus formed by two forks, each having a hinged load portion which is pivotally mounted on the fork back, the forks are fastened by means of the fork back to the load carrier designed as a fork carrier.
  • the lateral distance of the two load sections can be further changed in a simple manner to achieve an adaptation of the fork-shaped load handling device to different carriers, such as pallets, roll containers or small parts container. If in this case each fork tine an inventive stop means is assigned, a synchronous folding and unfolding of the load sections when raising or lowering of the lifting carriage can be achieved in a simple manner.
  • the lifting carriage is designed as a fork carrier, on which two laterally spaced folding load sections of the load receiving means are pivotally mounted.
  • a low construction cost is achieved because the two folding load sections that form the fork-shaped load-receiving means, are mounted directly on the load carrier designed as a fork carrier.
  • the integration of the fork back in the lifting results in a low construction cost and high stability, since the hinged load sections is mounted directly on the lifting carriage rotatable about the pivot axis.
  • a lifting carriage with two folding load sections can hereby with low construction costs and space requirement Be provided, with a synchronous folding and unfolding of the load sections when raising or lowering the lifting carriage is achieved in a simple manner.
  • a stop means can be provided according to an embodiment of the invention for each of the two foldable load sections, whereby the two load sections can be folded in and out synchronously.
  • one stop means is provided for one of the two foldable load sections and the foldable load sections are in operative connection with each other, in particular by means of a coupling strut.
  • the truck is provided in the lifting device with a towing device.
  • a towing device in which in the lifting device a towing device and the lifting slide hinged load sections are arranged, combines the function of a tractor, with the folded into the rest position load sections by means of the hitch one or more trailers can be pulled, and the function of Forklift with which the trailers can be loaded and unloaded when the load sections are folded out to the working position.
  • the in-house goods transport and material flow in particular the supply of material to production lines in production plants, can be carried out in a simple manner.
  • the load sections can be folded out and collapsed in a simple manner and with little construction effort without additional drive means, while the truck by the operator safely, ergonomically low without physical effort to expand and collapse the load sections can be operated from the driver's workplace without having to leave the driver's workplace for folding out and folding the load sections. This will continue to be a fast and Achieves time-saving folding and unfolding of the load sections, which achieve a high handling capacity with the truck.
  • the hitch is arranged on the lifting.
  • the lever arms When folded into the rest position load sections, the lever arms abut the stop means and the stop means, the lifting is clamped upwards by the or the stop means and clamped down through the lifting drive.
  • the lifting is thus fixed in height in both directions of movement.
  • a fixation of the lifting carriage with folded load sections and thus fixing the arranged on the lifting hitch is achieved in a simple manner, with the truck in the function as a tractor with attached to the trailer trailers safe operation, especially when braking, and
  • the truck according to the invention has a high reliability.
  • the stop means according to the invention against which the lifting and thus the hitch is clamped in the rest position folded load sections by means of the lifting drive can thus in such a truck in the function as a tractor with attached to the trailer trailers of the lifting on which arranged the hitch is, in a simple manner with a simple and common hydraulic lifting drive, in which, for example, attached to the lifting a lifting chain, which is in operative connection with a lifting cylinder, fixed in height to achieve safe operation of the truck during braking.
  • an inventive truck 1 is shown in a side view or perspective view.
  • the truck 1 seen in the vehicle longitudinal direction on a front-side drive part 2, in which at least one steerable drive wheel 3 is arranged.
  • the truck 1 according to the invention has a battery-electric drive system and comprises a arranged in the drive part 2 and not shown, with the drive wheel 3 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 workplace 4, which is formed by a standing platform 5. Adjacent to the driver's workplace 4, a rear-side vertical frame portion 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 lifting device 15.
  • the lifting device 15 is of a fixed as a stationary mast trained mast 16 is formed, which has two spaced in the vehicle transverse direction, vertically arranged rails 16a, 16b, which are attached, for example, to the rear-side frame portion 8.
  • a lifting carriage 17 In the vertical rails 16a, 16b of the mast 16, of which in the FIG. 1 only the front is shown, a lifting carriage 17 by means of corresponding guide rollers arranged up and down movable.
  • the lifting carriage 17 serves to receive a load-receiving means 20, which comprises two laterally spaced foldable load sections 19a, 19b, which is arranged pivotable about a substantially horizontal pivot axis 18 on the lifting carriage 17 in its lower region.
  • a load-receiving means 20 which comprises two laterally spaced foldable load sections 19a, 19b, which is arranged pivotable about a substantially horizontal pivot axis 18 on the lifting carriage 17 in its lower region.
  • a towing device 25 is arranged on the lifting carriage 17.
  • FIG. 2 the lifting device 15 is shown in a perspective view.
  • a lifting drive 30 is provided for lifting and lowering of the vertical rails 16a, 16b of the trained as a mast lifting mast 16 of the lifting device 15 guided lifting carriage 17.
  • the lifting drive 30 is formed by a lifting cylinder 31, which is connected by means of a lifting chain designed as a lifting means 32 with the lifting carriage 17.
  • each load section 19 a, 19 b, two lateral cheeks 41, each with one in the FIG. 3 shown bearing bore 42 are provided for a receiving bolt of the pivot axis 18.
  • the lifting carriage 17 is hereby arranged between the two lateral cheeks 41 of the load section 19a or 19b, so that the load sections 19a, 19b are mounted pivotably directly on the lifting carriage 17 about the pivot axis 18.
  • the load section 19a has at least one lever arm 40 arranged opposite the pivot axis 18 and thus extending to the rear of the lifting carriage 17, which lever is formed on a lateral cheek 41 of the load section 19a.
  • a stop means 45 is arranged for the folding load portion 19 a, which can be brought into operative connection with the roller 44 arranged between the lever arms 40.
  • the stop means 45 is arranged in the lower region of the lifting device 15.
  • the stop means 45 has - like the FIGS. 3 to 6 can be seen - a stop pin 46, by means of an actuator 47, for example, an electric linear drive, along the arrow 48 of FIG. 3 in the longitudinal direction of the load portion 19 a is translationally movable between an operating position and an inoperative position.
  • an actuator 47 for example, an electric linear drive
  • the stop pin 46 is arranged on an angle-shaped holding plate 49, which is fastened by means of a guide 50 designed as a linear guide on the rear-side frame portion 8 of the truck 1.
  • the retaining plate 49 is in this case still in operative connection with the likewise attached to the rear frame portion 8 actuator 47.
  • the two folding load sections 19 a, 19 b are available with one of the FIG. 7 apparent, designed as a cross brace coupling strut 55 together in operative connection.
  • the coupling strut 55 formed by the transverse strut is arranged between the inner cheeks 41 of the two load sections 19a, 19b and connected thereto.
  • the stop means 45 is shown in the operating position in which the stop pin 46 by corresponding actuation by means of the actuator 47 in the FIGS. 3 to 6 is moved to the right.
  • the load portions 19a and 19b as described below between a folded-working position and a retracted rest position by operating the lifting device 15 and thus of the lifting drive 30 pivotally.
  • FIG. 3 is the lifting carriage 17 in the fully lowered position
  • the stop means 45 is acted upon in the operating position and the load sections 19a, 19b are in the unfolded working position.
  • FIG. 8 shows the truck according to the invention 1 in this position with unfolded load sections 19a, 19b in the fully lowered position.
  • the hinged load portion 19b is pivoted synchronously upwards into the folded-in rest position.
  • the roller 44 in this case, a slight friction in the relative movement of the lever arm 40 along the stop pin 46 can be achieved.
  • the load section 19a enters the in the FIG. 6 shown folded-in rest position in which the load portions 19a, 19b abut the lifting carriage 17.
  • the truck 1 is shown in this position with folded load sections 19a, 19b.
  • the lifting carriage 17 can not be raised further, since the load section 19a and thus the lifting carriage 17 is clamped on the roller 44 on the stop pin 46 of the stop means 45, so that the lifting carriage 17 is fixed in height. Due to the arrangement of the stop means 45 in the lower region of the lifting device 15, the lifting slide 17 with the thereto attached hitch 25 in the rest position with folded load sections 19a, 19b only slightly raised and is located in the lowered position.
  • the truck 1 In the folded-in rest position of the load sections 19a, 19b ( FIG. 9 ), the truck 1 according to the invention thus has the function of a tractor, wherein attached to the lifting slide 17 hitch 25 one or more trailers can be attached and pulled.
  • the lifting carriage 17 By fixing the lifting carriage 17 to the stop pin 46 by means of the roller 44 arranged on the lever arms 44, a safe operation of the truck 1 in the function of a tractor, especially during deceleration, achieved.
  • FIG. 9 shown folded in the rest position in the in the FIG. 3 respectively.
  • FIG. 8 shown unfolded working position to be pivoted.
  • Connecting the stop means 45 can be operated in the inoperative position in which the stop pin 46 by appropriate actuation of the actuator 47 as far in the direction of arrow 48 in the FIG. 3 is moved left that the stop pin 46 can no longer get into contact with the arranged on the lever arms 40 roller 44 and thus operative connection.
  • the lifting carriage 17 can thus be fully raised and lowered in the inoperative position of the stop means 45 by means of the lifting drive 30 in the mast 16 designed as a stationary mast.
  • the industrial truck 1 FIGS. 1 and 7
  • the industrial truck 1 thus has in the inoperative position of the stop means 45, the function of a forklift truck with which the previously drawn trailer loaded and unloaded and loads can be, for example, on a shelf or outsourced.
  • the load sections 19a, 19b without additional drive means by operating the lifting device 15 by means of the lifting drive 30 and thus by using the lifting drive 30 and raising or lowering of the lifting carriage 17 by means of movable between the operating position and the inoperative position stop means 45 simple way and with low construction costs are folded into the rest position or folded into the working position. In this way, a quick change of the truck 1 from the function as a tractor in the function as a forklift and vice versa and thus achieves a high turnover of the truck.
  • the operator can in this case operate and control the actuating device 47 of the stop means 45 from the driver's workplace 4, so that the folding and unfolding of the load sections 19a, 19b can be carried out safely, ergonomically favorably and without physical effort and without the driver's workplace 4 ,
  • a corresponding stop means 45 can likewise be provided for each foldable load section 19a, 19b.

Description

Die Erfindung betrifft ein Flurförderzeug, insbesondere batterie-elektrisch betriebenes Flurförderzeug, mit einer Hubvorrichtung, insbesondere einem Hubmast, an der ein mit einem Lastaufnahmemittel versehener Hubschlitten auf- und bewegbar angeordnet und mittels eines Hubantriebs antreibbar ist, wobei das Lastaufnahmemittel von mindestens einem klappbaren Lastabschnitt gebildet ist, der um eine im Wesentlichen horizontale Schwenkachse zwischen einer ausgeklappten Arbeitsstellung und einer eingeklappten Ruhestellung schwenkbar ist, wobei der Lastabschnitt mit einem gegenüberliegend zu der Schwenkachse angeordneten Hebelarm versehen ist, der mit einem Anschlagmittel in Wirkverbindung bringbar ist, wobei durch Betätigen der Hubvorrichtung der Lastabschnitt zwischen der Arbeitsstellung und der Ruhestellung verschwenkbar ist.The invention relates to an industrial truck, in particular battery-electrically operated truck, with a lifting device, in particular a lifting mast on which a provided with a lifting device lifting and arranged movable and driven by a lifting drive, wherein the load receiving means formed by at least one folding load section is, which is pivotable about a substantially horizontal pivot axis between a deployed working position and a retracted rest position, wherein the load portion is provided with an opposite to the pivot axis arranged lever arm, which is engageable with a stop means, wherein by operating the lifting device of the load section is pivotable between the working position and the rest position.

Ein Lastaufnahmemittel für ein Flurförderzeug mit zwei Gabelzinken, die jeweils einen klappbaren Lastabschnitt aufweisen, ist aus der DD 58 268 bekannt. Als Antriebseinrichtung ist hierbei für jeden klappbaren Lastabschnitt an jeder Gabelzinke ein Hydraulikzylinder vorgesehen, der am Gabelrücken in dem dem Gabelschaft zugewandten Bereich angeordnet ist. Die Anordnung des Hydraulikzylinders in dem dem Gabelschaft zugewandten Bereich führt jedoch zu einer Vergrößerung des Vorbaumaßes. Zudem ist ein Schutzbügel vorzusehen, um den Hydraulikzylinder und die auf den Gabelschaft befindliche Last vor Beschädigungen zu schützen. Die Gabelzinke ist in der Regel an einem Hubschlitten angeordnet, der in einem Hubmast auf- und abbewegbar angeordnet ist. Durch die Verwendung eines derartigen doppeltwirkenden Hydraulikzylinders zum Antrieb der Klappgabeln sind weiterhin mehrere Druckmittelleitungen über den Hubmast zu dem Hubschlitten zu führen, um den Hydraulikzylinder mit Druckmittel zu versorgen. Um ein synchrones Klappen einer von zwei Gabelzinken bestehenden Klappgabel sicherzustellen, ist weiterhin eine Koppelwelle zwischen den beiden Gabelzinken erforderlich.A load handling device for a truck with two forks, each having a folding load section, is from the DD 58 268 known. As drive means in this case a hydraulic cylinder is provided for each folding load section on each fork prong, which is arranged on the fork back in the region facing the steerer tube. The arrangement of the hydraulic cylinder in the fork shaft facing area, however, leads to an increase in the Vorbaumaßes. In addition, a guard should be provided to protect the hydraulic cylinder and the load on the steerer from damage. The fork prong is usually arranged on a lifting carriage, which is arranged in a lifting mast up and down. Through the use of such a double-acting hydraulic cylinder to drive the folding forks several pressure medium lines are still to lead over the mast to the lifting to supply the hydraulic cylinder with pressure medium. In order to ensure a synchronous flaps of a folding fork consisting of two forks, a coupling shaft between the two forks is still required.

Insgesamt weist somit ein derartiges Flurförderzeug mit klappbaren Lastabschnitten des Lastaufnahmemittels einen hohen Bauaufwand auf.Overall, therefore, such a truck with folding load sections of the lifting device on a high construction cost.

Ein gattungsgemäßes Flurförderzeug ist aus der US 6 068 086 A bekannt.A generic truck is out of the US Pat. No. 6,068,086 known.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Flurförderzeug der eingangs genannten Gattung zur Verfügung zu stellen, das hinsichtlich der klappbaren Lastabschnitte einen geringen Bauaufwand und einen geringen Herstellaufwand aufweist.The present invention has for its object to provide a truck of the type mentioned are available, which has a low construction cost and a low production cost in terms of folding load sections.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Anschlagmittel mittels einer Betätigungseinrichtung zwischen einer Betriebsstellung und einer Außerbetriebsstellung betätigbar ist, wobei die Betätigungseinrichtung von einem Hydraulikzylinder oder von einem elektrischen Antrieb, insbesondere einem elektrischen Linearantrieb, gebildet ist.This object is achieved in that the stop means is actuated by means of an actuating device between an operating position and an inoperative position, wherein the actuating device is formed by a hydraulic cylinder or by an electric drive, in particular an electric linear drive.

Durch das Anschlagmittel, das mit dem Hebelarm des Lastabschnittes zusammenwirkt, kann der klappbare Lastabschnitt durch Anheben des Hubschlittens mittels des Hubantriebs und somit bei der Betätigung der Hubvorrichtung mittels des Hubantriebs von der Arbeitsstellung in die Ruhestellung eingeklappt bzw. durch Absenken des Hubschlittens mittels des Hubantriebs und somit bei der Betätigung der Hubvorrichtung mittels des Hubantriebs von der Ruhestellung in die Arbeitsstellung ausgeklappt werden. Zum Aus- und Einklappen des Lastabschnittes ist durch die erfindungsgemäße Verwendung des Hubantriebs keine zusätzliche Antriebseinrichtung erforderlich, wodurch sich ein geringer Bauaufwand ergibt. Insgesamt ergibt sich somit ein Flurförderzeug, bei dem die Lastabschnitte des Lastaufnahmemittels auf einfache Weise und mit geringem Bauaufwand aus- und eingeklappt werden können. Das Anschlagmittel ist mittels einer Betätigungseinrichtung zwischen einer Betriebsstellung und einer Außerbetriebsstellung betätigbar. Hierdurch ist eine einfache und schnelle Betätigung des Anschlagmittels erzielbar, die von der Bedienperson vom Fahrerarbeitsplatz aus und somit ohne Verlassen des Fahrerarbeitsplatzes durch Ansteuerung der Betätigungseinrichtung erzielbar ist. Die Betätigungseinrichtung kann von einem Hydraulikzylinder gebildet sein. Sofern die Betätigungseinrichtung von einem elektrischen Antrieb, insbesondere einem elektrischen Linearantrieb, gebildet ist, ergibt sich ein geringer Bauaufwand für die Betätigungseinrichtung. Der elektrische Antrieb kann beispielsweise von einem Spindeltrieb, einem Elektrozylinder oder einem Magneten gebildet sein.By the stop means, which cooperates with the lever arm of the load section, the hinged load section can be folded by lifting the lifting by means of the lifting drive and thus upon actuation of the lifting device by means of Hubantriebs from the working position to the rest position or by lowering the lifting carriage by means of Hubantriebs and thus be unfolded during operation of the lifting device by means of the lifting drive from the rest position to the working position. For folding and unfolding of the load section, no additional drive device is required by the inventive use of the lifting drive, resulting in a low construction cost. Overall, this results in a truck in which the load sections of the lifting device can be folded out and folded in a simple manner and with low construction costs. The stop means is actuated by means of an actuating device between an operating position and an inoperative position. As a result, a simple and quick operation of the stop means can be achieved, which can be achieved by the operator from the driver's workplace and thus without leaving the driver's workplace by controlling the actuator. The actuating device may be formed by a hydraulic cylinder. If the actuating device is formed by an electric drive, in particular an electric linear drive, results in a low construction cost for the actuator. The electric Drive can be formed for example by a spindle drive, an electric cylinder or a magnet.

Das Anschlagmittel ist gemäß einer bevorzugten Ausführungsform der Erfindung in der Betriebsstellung mit dem Hebelarm zum Verschwenken des Lastabschnitts in Wirkverbindung bringbar. In der Betriebsstellung kann somit durch Anheben des Hubschlittens mittels des Hubantriebs durch eine Wirkverbindung zwischen dem Hebelarm und dem Anschlagmittel der Lastabschnitt von der Arbeitsstellung in die Ruhestellung eingeklappt und entsprechend durch Absenken des Hubschlittens mittels des Hubantriebs der Lastabschnitt von der Ruhestellung in die Arbeitsstellung ausgeklappt werden. Bei in der Außerbetriebsstellung befindlichem Anschlagmittel gelangt das Anschlagmittel beim Anheben und Absenken des Hubschlittens nicht in Kontakt mit dem Hebelarm, wodurch sich der Lastabschnitt in der ausgeklappten Arbeitsstellung befindet und der Hubschlitten durch den Hubantrieb angehoben und abgesenkt werden kann.The stop means is in accordance with a preferred embodiment of the invention in the operating position with the lever arm for pivoting the load section operatively engageable. In the operating position can thus be folded by lifting the lifting by means of the lifting drive by an operative connection between the lever arm and the stop means of the load from the working position to the rest position and be folded accordingly by lowering the lifting means of the lifting drive the load section from the rest position to the working position. When located in the inoperative position stop means the stop means when lifting and lowering of the lifting carriage does not come into contact with the lever arm, whereby the load section is in the unfolded working position and the lifting can be raised and lowered by the lifting drive.

Das Anschlagmittel kann von der Betriebsstellung in die Außerbetriebsstellung rotatorisch bewegt werden. Mit einem beispielsweise als drehbaren Nocken oder als schwenkbaren Riegel ausgebildeten Anschlagmittel kann auf einfache Weise ein Anschlagmittel gebildet werden, das in der Betriebsstellung mit dem Hebelarm des Lastabschnittes zusammenwirkt.The stop means can be moved in rotation from the operating position to the inoperative position. With a designed for example as a rotatable cam or as a pivotable latch stop means a stop means can be formed in a simple manner, which cooperates in the operating position with the lever arm of the load section.

Besondere Vorteile ergeben sich, wenn das Anschlagmittel translatorisch bewegbar ist. Mit einem translatorisch und somit längsverschiebbaren Anschlagmittel ergibt sich ein geringer Bauaufwand für das zwischen der Betriebsstellung und der Außerbetriebsstellung bewegbare Anschlagmittel. Das Anschlagmittel kann hierbei in Querrichtung des Flurförderzeugs und somit quer zu dem Lastabschnitt bewegbar sein. Sofern das Anschlagmittel gemäß einer bevorzugten Ausgestaltungsform der Erfindung in Längsrichtung des Lastabschnittes längsverschiebbar bewegbar ist, ist eine platzsparende Anordnung des Anschlagmittels erzielbar.Particular advantages arise when the stop means is translationally movable. With a translational and thus longitudinally displaceable stop means results in a low construction cost for the movable between the operating position and the inoperative position stop means. The stop means may in this case be movable in the transverse direction of the truck and thus transversely to the load section. If the stop means according to a preferred embodiment of the invention in the longitudinal direction of the load section is longitudinally displaceable movable, a space-saving arrangement of the stop means can be achieved.

Zweckmäßigerweise ist der Lastabschnitt mit seitlichen Wangen versehen ist, an denen jeweils eine Lagerbohrung für die Schwenkachse ausgebildet ist, wobei an zumindest einer Wange der Hebelarm ausgebildet ist. Hierdurch ergibt sich ein einfacher Aufbau für die Schwenkachse und den Hebelarm an dem Lastabschnitt mit einem geringen Bauaufwand.Conveniently, the load section is provided with lateral cheeks, on each of which a bearing bore for the pivot axis is formed, wherein on at least one cheek of the lever arm is formed. This results in a simple structure for the pivot axis and the lever arm on the load section with a low construction cost.

Sofern gemäß einer bevorzugten Weiterbildung der Erfindung an dem Hebelarm eine drehbare Rolle angeordnet ist, kann beim Einklappen bzw. Ausklappen des Lastabschnitts die zwischen dem Hebelarm und dem Anschlagmittel beim Gleiten des Hebelarms entlang des Anschlagmittels auftretende Reibung und Verschleiß auf einfache Weise verringert werden.If, according to a preferred development of the invention, a rotatable roller is arranged on the lever arm, the friction and wear occurring between the lever arm and the stop means during sliding of the lever arm along the stop means can be reduced in a simple manner during folding or unfolding of the load section.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist an jeder seitlichen Wange ein Hebelarm ausgebildet, zwischen denen ein Aufnahmebolzen angeordnet ist. Auf einem derartigen zwischen den beiden Hebelarmen angeordneten Aufnahmebolzen kann die drehbare Rolle auf einfache Weise angeordnet werden.According to a preferred embodiment of the invention, a lever arm is formed on each side cheek, between which a receiving bolt is arranged. On such a receiving bolt arranged between the two lever arms, the rotatable roller can be arranged in a simple manner.

Das Anschlagmittel ist gemäß einer vorteilhaften Ausgestaltungsform der Erfindung an einer Führung, insbesondere einer Linearführung, befestigt, wodurch die beim Einklappen und Ausklappen des Lastabschnittes auftretenden Kräfte auf einfache Weise über die Führung am Flurförderzeug abgestützt werden können. Zudem kann von einer derartigen Führung auf einfache Weise ein Anschlag für die Betriebsstellung und die Außerbetriebsstellung des Anschlagmittels gebildet werden.The stop means is mounted according to an advantageous embodiment of the invention on a guide, in particular a linear guide, whereby the forces occurring during folding and unfolding of the load section can be supported in a simple manner on the guide on the truck. In addition, a stop for the operating position and the inoperative position of the stop means can be formed by such a guide in a simple manner.

Das Anschlagmittel ist gemäß einer vorteilhaften Ausgestaltungsform von einem Anschlagzapfen gebildet. Mit einem Anschlagzapfen kann mit geringem Bauaufwand ein Anschlagmittel für den Hebelarm oder die an dem Hebelarm angeordnete drehbare Rolle gebildet werden.The stop means is formed according to an advantageous embodiment of a stop pin. With a stop pin a stop means for the lever arm or arranged on the lever arm rotatable roller can be formed with low construction costs.

Zweckmäßigerweise ist das Anschlagmittel gemäß einer vorteilhaften Ausführungsform der Erfindung im unteren Bereich der Hubvorrichtung angeordnet. Hierdurch wird erzielt, dass der Hubschlitten bei in die Ruhestellung eingeklappten Lastabschnitten lediglich geringfügig angehoben ist und sich im Bereich der abgesenkten Stellung befindet.Conveniently, the stop means is arranged according to an advantageous embodiment of the invention in the lower region of the lifting device. This ensures that the lifting carriage is only slightly raised when folded into the rest position load sections and is in the lowered position.

Das Anschlagmittel kann gemäß einer bevorzugten Ausführungsform am Flurförderzeug befestigt sein, beispielsweise an einem benachbart zu der Hubvorrichtung angeordneten vertikalen Rahmenabschnitt. Es ist jedoch zudem möglich, das Anschlagmittel an der Hubvorrichtung, insbesondere einem Standmast, zu befestigen, um in Verbindung mit dem Hebelarm ein Ein- und Ausklappen des Lastabschnittes zu erzielen.The stop means may be fixed to the truck according to a preferred embodiment, for example, on a side adjacent to the lifting device arranged vertical frame portion. However, it is also possible to attach the stop means to the lifting device, in particular a stationary mast, in order to achieve a folding and unfolding of the load section in conjunction with the lever arm.

Gemäß einer Ausgestaltungsform der Erfindung ist der Hubschlitten als Gabelträger ausgebildet und das Lastaufnahmemittel von zwei seitlich beabstandeten Gabelzinken gebildet, die jeweils einen Gabelrücken aufweisen, an dem ein Lastabschnitt schwenkbar gelagert ist und mit dem die Gabelzinke an dem Hubschlitten befestigt ist. Das gabelförmige Lastaufnahmemittel wird somit von zwei Gabelzinken gebildet, die jeweils einen klappbaren Lastabschnitt aufweisen, der an dem Gabelrücken schwenkbar gelagert ist, wobei die Gabelzinken mittels der Gabelrücken an dem als Gabelträger ausgebildeten Lastträger befestigt sind. Mit derartigen klappbaren Gabelzinken, die beispielsweise an dem Gabelträger seitlich verschiebbar befestigt sein können, kann weiterhin der seitliche Abstand der beiden Lastabschnitte auf einfache Weise verändert werden, um eine Anpassung des gabelförmigen Lastaufnahmemittels an unterschiedliche Ladungsträger, beispielsweise Paletten, Rollcontainer oder Kleinteilebehälter zu erzielen. Sofern hierbei jeder Gabelzinke ein erfindungsgemäßes Anschlagmittel zugeordnet ist, kann ein synchrones Ein- und Ausklappen der Lastabschnitte beim Anheben bzw. Absenken des Hubschlittens auf einfache Weise erzielt werden.According to one embodiment of the invention, the lifting carriage is designed as a fork carriage and the load-receiving means formed by two laterally spaced forks, each having a fork back, on which a load portion is pivotally mounted and with which the fork is attached to the lifting. The fork-shaped load-receiving means is thus formed by two forks, each having a hinged load portion which is pivotally mounted on the fork back, the forks are fastened by means of the fork back to the load carrier designed as a fork carrier. With such folding forks, which may be laterally slidably mounted, for example, on the fork carriage, the lateral distance of the two load sections can be further changed in a simple manner to achieve an adaptation of the fork-shaped load handling device to different carriers, such as pallets, roll containers or small parts container. If in this case each fork tine an inventive stop means is assigned, a synchronous folding and unfolding of the load sections when raising or lowering of the lifting carriage can be achieved in a simple manner.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist der Hubschlitten als Gabelträger ausgebildet, an dem zwei seitlich beabstandete klappbare Lastabschnitte des Lastaufnahmemittels schwenkbar gelagert sind. Hierdurch wird ein geringer Bauaufwand erzielt, da die beiden klappbaren Lastabschnitte, die das gabelförmige Lastaufnahmemittel bilden, direkt an dem als Gabelträger ausgebildeten Lastträger schwenkbar gelagert sind. Durch die Integration des Gabelrückens in den Hubschlitten ergibt sich ein geringer Bauaufwand und eine hohe Stabilität, da der klappbare Lastabschnitte direkt an dem Hubschlitten um die Schwenkachse drehbar befestigt ist. Mit einem oder zwei erfindungsgemäßen Anschlagmitteln, die im Bereich der klappbaren Lastabschnitte angeordnet sind, kann hierbei mit geringem Bauaufwand und Bauraumbedarf ein Hubschlitten mit zwei klappbaren Lastabschnitten zur Verfügung gestellt werden, wobei ein synchrones Ein- und Ausklappen der Lastabschnitte beim Anheben bzw. Absenken des Hubschlittens auf einfache Weise erzielt wird.According to a preferred embodiment of the invention, the lifting carriage is designed as a fork carrier, on which two laterally spaced folding load sections of the load receiving means are pivotally mounted. As a result, a low construction cost is achieved because the two folding load sections that form the fork-shaped load-receiving means, are mounted directly on the load carrier designed as a fork carrier. The integration of the fork back in the lifting results in a low construction cost and high stability, since the hinged load sections is mounted directly on the lifting carriage rotatable about the pivot axis. With one or two stop means according to the invention, which are arranged in the region of the foldable load sections, a lifting carriage with two folding load sections can hereby with low construction costs and space requirement Be provided, with a synchronous folding and unfolding of the load sections when raising or lowering the lifting carriage is achieved in a simple manner.

Bei einem Lastaufnahmemittel mit zwei klappbaren Lastabschnitten kann gemäß einer Ausführungsform der Erfindung für jeden der beiden klappbaren Lastabschnitte jeweils ein Anschlagmittel vorgesehen sein, wodurch die beiden Lastabschnitte synchron ein- und ausgeklappt werden können.In a load receiving means with two folding load sections, in each case a stop means can be provided according to an embodiment of the invention for each of the two foldable load sections, whereby the two load sections can be folded in and out synchronously.

Hinsichtlich eines geringen Bauaufwandes ergeben sich besondere Vorteile, wenn gemäß einer bevorzugten Ausführungsform der Erfindung für einen der beiden klappbaren Lastabschnitte ein Anschlagmittel vorgesehen ist und die klappbaren Lastabschnitte miteinander in Wirkverbindung stehen, insbesondere mittels einer Koppelstrebe. Hierdurch können die beiden Lastabschnitte mit lediglich einem Anschlagmittel auf einfache Weise synchron ein- und ausgeklappt werden.With regard to a low construction costs, there are particular advantages if, according to a preferred embodiment of the invention, one stop means is provided for one of the two foldable load sections and the foldable load sections are in operative connection with each other, in particular by means of a coupling strut. As a result, the two load sections with only one stop means in a simple manner synchronously on and folded out.

Besondere Vorteile ergeben sich, wenn gemäß einer Weiterbildung der Erfindung das Flurförderzeug im Bereich der Hubvorrichtung mit einer Anhängevorrichtung versehen ist. Ein derartiges Flurförderzeug, bei dem im Bereich der Hubvorrichtung eine Anhängevorrichtung und an dem Hubschlitten klappbare Lastabschnitte angeordnet sind, vereinigt die Funktion eines Schleppers, mit dem bei in die Ruhestellung eingeklappten Lastabschnitten mittels der Anhängevorrichtung ein oder mehrere Anhänger gezogen werden können, und die Funktion eines Gabelstaplers, mit dem bei in die Arbeitsstellung ausgeklappten Lastabschnitten die Anhänger be- und entladen werden können. Mit einem derartigen Flurförderzeug kann der innerbetrieblichen Warentransport und Materialfluss, insbesondere die Materialversorgung von Produktionslinien in Produktionsbetrieben, auf einfache Weise erfolgen. Mittels des Hubantriebs und eines Anschlagmittels oder zwei Anschlagmitteln können hierbei ohne zusätzliche Antriebseinrichtungen die Lastabschnitte auf einfache Weise und mit geringem Bauaufwand aus- und eingeklappt werden, wobei weiterhin das Flurförderzeug von der Bedienperson sicher, ergonomisch günstig ohne körperliche Anstrengungen zum Aus- und Einklappen der Lastabschnitte vom Fahrerarbeitsplatz aus bedient werden kann ohne den Fahrerarbeitsplatz zum Aus- und Einklappen der Lastabschnitte verlassen zu müssen. Hierdurch wird weiterhin ein schnelles und zeitsparendes Aus- und Einklappen der Lastabschnitte erzielt, wodurch mit dem Flurförderzeug eine hohe Umschlagleistung zu erzielen.Particular advantages arise when, according to an embodiment of the invention, the truck is provided in the lifting device with a towing device. Such a truck, in which in the lifting device a towing device and the lifting slide hinged load sections are arranged, combines the function of a tractor, with the folded into the rest position load sections by means of the hitch one or more trailers can be pulled, and the function of Forklift with which the trailers can be loaded and unloaded when the load sections are folded out to the working position. With such a truck, the in-house goods transport and material flow, in particular the supply of material to production lines in production plants, can be carried out in a simple manner. By means of the lifting drive and a sling or two slings here the load sections can be folded out and collapsed in a simple manner and with little construction effort without additional drive means, while the truck by the operator safely, ergonomically low without physical effort to expand and collapse the load sections can be operated from the driver's workplace without having to leave the driver's workplace for folding out and folding the load sections. This will continue to be a fast and Achieves time-saving folding and unfolding of the load sections, which achieve a high handling capacity with the truck.

Besondere Vorteile sind erzielbar, wenn gemäß einer Weiterbildung der Erfindung die Anhängevorrichtung am Hubschlitten angeordnet ist. Bei in die Ruhestellung eingeklappten Lastabschnitten, wobei die Hebelarme an dem Anschlagmittel bzw. den Anschlagmitteln anliegen, ist der Hubschlitten nach oben durch das bzw. die Anschlagmittel eingespannt und nach unten durch den Hubantrieb eingespannt. Der Hubschlitten ist somit in der Höhe in beiden Bewegungsrichtungen fixiert. Hierdurch wird auf einfache Weise eine Fixierung des Hubschlittens bei eingeklappten Lastabschnitten und somit eine Fixierung der an dem Hubschlitten angeordneten Anhängevorrichtung erzielt, 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. Durch das erfindungsgemäße Anschlagmittel, gegen das der Hubschlitten und somit die Anhängevorrichtung bei in die Ruhestellung eingeklappten Lastabschnitten mittels des Hubantriebs verspannt ist, kann somit bei einem derartigen Flurförderzeug in der Funktion als Schlepper mit an die Anhängevorrichtung angehängten Anhängern der Hubschlitten, an dem die Anhängevorrichtung angeordnet ist, auf einfache Weise mit einem einfach aufgebauten und gängigen hydraulischen Hubantrieb, bei dem beispielsweise an dem Hubschlitten eine Hubkette befestigt ist, die mit einem Hubzylinder in Wirkverbindung steht, in der Höhe fixiert werden, um beim Abbremsen einen sicheren Betrieb des Flurförderzeugs zu erzielen.Particular advantages can be achieved if according to an embodiment of the invention, the hitch is arranged on the lifting. When folded into the rest position load sections, the lever arms abut the stop means and the stop means, the lifting is clamped upwards by the or the stop means and clamped down through the lifting drive. The lifting is thus fixed in height in both directions of movement. As a result, a fixation of the lifting carriage with folded load sections and thus fixing the arranged on the lifting hitch is achieved in a simple manner, with the truck in the function as a tractor with attached to the trailer trailers safe operation, especially when braking, and Thus, the truck according to the invention has a high reliability. By the stop means according to the invention against which the lifting and thus the hitch is clamped in the rest position folded load sections by means of the lifting drive, can thus in such a truck in the function as a tractor with attached to the trailer trailers of the lifting on which arranged the hitch is, in a simple manner with a simple and common hydraulic lifting drive, in which, for example, attached to the lifting a lifting chain, which is in operative connection with a lifting cylinder, fixed in height to achieve safe operation of the truck during braking.

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 Seitenansicht,
Figur 2
die Hubvorrichtung in einer perspektivischen Darstellung,
Figuren 3 bis 6
die Hubvorrichtung mit in der Betriebsstellung befindlichem Anschlagmittel während des Einklappens des Lastabschnittes in verschiedenen Betriebsstellungen,
Figur 7
das erfindungsgemäße Flurförderzeug gemäß der Figur 1 in einer perspektivischen Darstellung von hinten,
Figur 8
das Flurförderzeug gemäß der Figur 7 mit ausgeklappten Lastabschnitten in einer abgesenkten Position und
Figur 9
das Flurförderzeug gemäß der Figur 7 mit eingeklappten Lastabschnitten.
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 side view,
FIG. 2
the lifting device in a perspective view,
FIGS. 3 to 6
the lifting device with stop means located in the operating position during the folding in of the load section in different operating positions,
FIG. 7
the truck according to the invention according to the FIG. 1 in a perspective view from behind,
FIG. 8
the truck according to the FIG. 7 with unfolded load sections in a lowered position and
FIG. 9
the truck according to the FIG. 7 with folded load sections.

In der Figur 1 bzw. der Figur 7 ist ein erfindungsgemäßes Flurförderzeug 1 in einer Seitenansicht bzw. perspektivischen Darstellung dargestellt. Das Flurförderzeug 1 weist in Fahrzeuglängsrichtung gesehen einen frontseitigen Antriebsteil 2 auf, in dem zumindest ein lenkbares Antriebsrad 3 angeordnet ist. Das erfindungsgemäße Flurförderzeug 1 weist ein batterie-elektrisches Antriebssystem auf und umfasst einem in dem Antriebsteil 2 angeordneten und nicht mehr dargestellten, mit dem Antriebsrad 3 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 or the FIG. 7 an inventive truck 1 is shown in a side view or perspective view. The truck 1, seen in the vehicle longitudinal direction on a front-side drive part 2, in which at least one steerable drive wheel 3 is arranged. The truck 1 according to the invention has a battery-electric drive system and comprises a arranged in the drive part 2 and not shown, with the drive wheel 3 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 Fahrerarbeitsplatz 4 auf, der von einer Standplattform 5 gebildet ist. Angrenzend an den Fahrerarbeitsplatz 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 workplace 4, which is formed by a standing platform 5. Adjacent to the driver's workplace 4, a rear-side vertical frame portion 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 einer Hubvorrichtung 15 versehen. Die Hubvorrichtung 15 ist von einem feststehenden als Standmast ausgebildeten Hubmast 16 gebildet, der zwei in Fahrzeugquerrichtung beabstandete, vertikal angeordnete Schienen 16a, 16b aufweist, die beispielsweise an dem heckseitigen Rahmenabschnitt 8 befestigt sind. In den vertikalen Schienen 16a, 16b des Hubmastes 16, von denen in der Figur 1 lediglich die vorne liegende dargestellt ist, ist ein Hubschlitten 17 mittels entsprechender Führungsrollen auf- und abbewegbar angeordnet.At the rear frame section 8 or adjacent to the rear frame section 8, the truck according to the invention is provided with a lifting device 15. The lifting device 15 is of a fixed as a stationary mast trained mast 16 is formed, which has two spaced in the vehicle transverse direction, vertically arranged rails 16a, 16b, which are attached, for example, to the rear-side frame portion 8. In the vertical rails 16a, 16b of the mast 16, of which in the FIG. 1 only the front is shown, a lifting carriage 17 by means of corresponding guide rollers arranged up and down movable.

Der Hubschlitten 17 dient zur Aufnahme eines Lastaufnahmemittels 20, das zwei seitlich beabstandete klappbare Lastabschnitt 19a, 19b umfasst, die um eine im Wesentlichen horizontale Schwenkachse 18 an dem Hubschlitten 17 in dessen unteren Bereich schwenkbar angeordnet ist.The lifting carriage 17 serves to receive a load-receiving means 20, which comprises two laterally spaced foldable load sections 19a, 19b, which is arranged pivotable about a substantially horizontal pivot axis 18 on the lifting carriage 17 in its lower region.

Weiterhin ist an dem Hubschlitten 17 eine Anhängevorrichtung 25 angeordnet.Furthermore, a towing device 25 is arranged on the lifting carriage 17.

In der Figur 2 ist die Hubvorrichtung 15 in einer perspektivischen Darstellung dargestellt. Zum Anheben und Absenken des an den vertikalen Schienen 16a, 16b des als Standmast ausgebildeten Hubmastes 16 der Hubvorrichtung 15 geführten Hubschlittens 17 ist ein Hubantrieb 30 vorgesehen. Der Hubantrieb 30 ist von einem Hubzylinder 31 gebildet, der mittels eines als Hubkette ausgebildeten Zugmittels 32 mit dem Hubschlitten 17 verbunden ist.In the FIG. 2 the lifting device 15 is shown in a perspective view. For lifting and lowering of the vertical rails 16a, 16b of the trained as a mast lifting mast 16 of the lifting device 15 guided lifting carriage 17, a lifting drive 30 is provided. The lifting drive 30 is formed by a lifting cylinder 31, which is connected by means of a lifting chain designed as a lifting means 32 with the lifting carriage 17.

In dem dargestellten Ausführungsbeispiel weist jeder Lastabschnitt 19a, 19b zwei seitliche Wangen 41 auf, die mit jeweils einer in der Figur 3 dargestellten Lagerbohrung 42 für einen Aufnahmebolzen der Schwenkachse 18 versehen sind. Der Hubschlitten 17 ist hierbei zwischen den beiden seitlichen Wangen 41 des Lastabschnittes 19a bzw. 19b angeordnet, so dass die Lastabschnitte 19a, 19b direkt an dem Hubschlitten 17 um die Schwenkachse 18 schwenkbar gelagert sind.In the illustrated embodiment, each load section 19 a, 19 b, two lateral cheeks 41, each with one in the FIG. 3 shown bearing bore 42 are provided for a receiving bolt of the pivot axis 18. The lifting carriage 17 is hereby arranged between the two lateral cheeks 41 of the load section 19a or 19b, so that the load sections 19a, 19b are mounted pivotably directly on the lifting carriage 17 about the pivot axis 18.

Der Lastabschnitt 19a weist mindestens einen gegenüberliegend zu der Schwenkachse 18 angeordneten und sich somit zur Rückseite des Hubschlittens 17 erstreckenden Hebelarm 40 auf, der an einer seitlichen Wange 41 des Lastabschnittes 19a ausgebildet ist.The load section 19a has at least one lever arm 40 arranged opposite the pivot axis 18 and thus extending to the rear of the lifting carriage 17, which lever is formed on a lateral cheek 41 of the load section 19a.

Zwischen den beiden von den seitliche Wangen 41 gebildeten Hebelarmen 40 des Lastabschnittes 19a ist - wie in der Figur 3 dargestellt ist - beabstandet zu der Schwenkachse 18 ein Aufnahmebolzen 43 angeordnet, an dem eine zwischen den Wangen 41 und somit den Hebelarmen 40 angeordnete drehbare Rolle 44 befestigt ist.Between the two lever arms 40 formed by the lateral cheeks 41 of the load portion 19a is - as in the FIG. 3 is shown - spaced from the Pivoting axis 18 a receiving bolt 43 is disposed on which a between the cheeks 41 and thus the lever arms 40 arranged rotatable roller 44 is attached.

An dem heckseitigen Rahmenabschnitt 8 des Flurförderzeugs 1 ist für den klappbaren Lastabschnitt 19a ein Anschlagmittel 45 angeordnet, das mit der zwischen den Hebelarmen 40 angeordneten Rolle 44 in Wirkverbindung bringbar ist. Das Anschlagmittel 45 ist im unteren Bereich der Hubvorrichtung 15 angeordnet.At the rear-side frame portion 8 of the truck 1, a stop means 45 is arranged for the folding load portion 19 a, which can be brought into operative connection with the roller 44 arranged between the lever arms 40. The stop means 45 is arranged in the lower region of the lifting device 15.

Das Anschlagmittel 45 weist - wie den Figuren 3 bis 6 zu entnehmen ist - einen Anschlagzapfen 46 auf, der mittels einer Betätigungseinrichtung 47, beispielsweise einem elektrischen Linearantrieb, entlang des Pfeiles 48 der Figur 3 in Längsrichtung des Lastabschnittes 19a translatorisch zwischen einer Betriebsstellung und einer Außerbetriebsstellung bewegbar ist.The stop means 45 has - like the FIGS. 3 to 6 can be seen - a stop pin 46, by means of an actuator 47, for example, an electric linear drive, along the arrow 48 of FIG. 3 in the longitudinal direction of the load portion 19 a is translationally movable between an operating position and an inoperative position.

Der Anschlagzapfen 46 ist an einem winkelförmigen Halteblech 49 angeordnet, das mittels einer als Linearführung ausgebildeten Führung 50 an dem heckseitigen Rahmenabschnitt 8 des Flurförderzeugs 1 befestigt ist. Das Halteblech 49 steht hierbei weiterhin mit der ebenfalls an dem heckseitigen Rahmenabschnitt 8 befestigten Betätigungseinrichtung 47 in Wirkverbindung.The stop pin 46 is arranged on an angle-shaped holding plate 49, which is fastened by means of a guide 50 designed as a linear guide on the rear-side frame portion 8 of the truck 1. The retaining plate 49 is in this case still in operative connection with the likewise attached to the rear frame portion 8 actuator 47.

Die beiden klappbaren Lastabschnitte 19a, 19b stehen mit einer aus der Figur 7 ersichtlichen, als Querstrebe ausgebildeten Koppelstrebe 55 miteinander in Wirkverbindung. Die von der Querstrebe ausgebildete Koppelstrebe 55 ist hierbei zwischen den inneren Wangen 41 der beiden Lastabschnitte 19a, 19b angeordnet und mit diesen verbunden.The two folding load sections 19 a, 19 b are available with one of the FIG. 7 apparent, designed as a cross brace coupling strut 55 together in operative connection. The coupling strut 55 formed by the transverse strut is arranged between the inner cheeks 41 of the two load sections 19a, 19b and connected thereto.

In den Figuren 3 bis 6 ist das Anschlagmittel 45 in der Betriebsstellung dargestellt, in der der Anschlagzapfen 46 durch entsprechende Betätigung mittels der Betätigungseinrichtung 47 nach in den Figuren 3 bis 6 rechts bewegt ist. In dieser Betriebsstellung des Anschlagmiftels 45 sind die Lastabschnitte 19a bzw. 19b wie im folgenden beschrieben zwischen einer ausgeklappten Arbeitsstellung und einer eingeklappten Ruhestellung durch Betätigen der Hubvorrichtung 15 und somit des Hubantriebs 30 schwenkbar.In the FIGS. 3 to 6 the stop means 45 is shown in the operating position in which the stop pin 46 by corresponding actuation by means of the actuator 47 in the FIGS. 3 to 6 is moved to the right. In this operating position of the Anschlagmiftels 45, the load portions 19a and 19b as described below between a folded-working position and a retracted rest position by operating the lifting device 15 and thus of the lifting drive 30 pivotally.

In der Figur 3 befindet sich der Hubschlitten 17 in der vollständig abgesenkten Stellung, das Anschlagmittel 45 ist in die Betriebsstellung beaufschlagt und die Lastabschnitte 19a, 19b befinden sich in der ausgeklappten Arbeitsstellung. Die Figur 8 zeigt das erfindungsgemäße Flurförderzeug 1 in dieser Stellung mit ausgeklappten Lastabschnitten 19a, 19b in der vollständig abgesenkten Stellung. Beim Anheben des Hubschlittens 17 mittels des Hubantriebs 30 gelangt die zwischen den Hebelarmen 40 des Lastabschnitts 19a angeordnete Rolle 44 - wie in der Figur 4 dargestellt - in Kontakt und somit in Wirkverbindung mit dem ausgefahrenen Anschlagzapfen 46 des Anschlagmittels 45. Beim weiteren Anheben des Hubschlittens 17 mittels des Hubantriebs 30 wird somit über den Hebelarm 40 und den Anschlagzapfen 46 der um die Schwenkachse 18 schwenkbare Lastabschnitt 19a nach oben in Richtung der eingeklappten Ruhestellung verschwenkt, wie in der Figur 5 dargestellt. Mittels der Koppelstrebe 55 wird hierbei der klappbare Lastabschnitt 19b synchron nach oben in die eingeklappte Ruhestellung verschwenkt. Mit der Rolle 44 kann hierbei eine geringe Reibung bei der Relativbewegung des Hebelarmes 40 entlang des Anschlagzapfens 46 erzielt werden. Beim weiteren Anheben des Hubschlittens 17 mittels der Hubvorrichtung 30 gelangt der Lastabschnitt 19a in die in der Figur 6 dargestellte eingeklappte Ruhestellung, in der die Lastabschnitte 19a, 19b an dem Hubschlitten 17 anliegen. In der Figur 9 ist das Flurförderzeug 1 in dieser Stellung mit eingeklappten Lastabschnitten 19a, 19b dargestellt. Mittels des Hubantriebs 30 kann hierbei der Hubschlitten 17 nicht mehr weiter angehoben werden, da der Lastabschnitt 19a und somit der Hubschlitten 17 über die Rolle 44 an dem Anschlagzapfen 46 des Anschlagmittels 45 verspannt ist, so dass der Hubschlitten 17 in der Höhe fixiert ist. Durch die Anordnung des Anschlagmittels 45 im unteren Bereich der Hubvorrichtung 15 ist der Hubschlitten 17 mit der daran angeordneten Anhängevorrichtung 25 in der Ruhestellung mit eingeklappten Lastabschnitten 19a, 19b lediglich geringfügig angehoben und befindet sich im Bereich der abgesenkten Stellung.In the FIG. 3 is the lifting carriage 17 in the fully lowered position, the stop means 45 is acted upon in the operating position and the load sections 19a, 19b are in the unfolded working position. The FIG. 8 shows the truck according to the invention 1 in this position with unfolded load sections 19a, 19b in the fully lowered position. When lifting the lifting carriage 17 by means of the lifting drive 30 passes between the lever arms 40 of the load section 19 a arranged roller 44 - as in the FIG. 4 Upon further lifting of the lifting carriage 17 by means of the lifting drive 30 is thus about the lever arm 40 and the stop pin 46 of the pivot axis 18 pivotable load portion 19a upwards in the direction of pivoted rest position pivoted, as in the FIG. 5 shown. By means of the coupling strut 55 in this case the hinged load portion 19b is pivoted synchronously upwards into the folded-in rest position. With the roller 44, in this case, a slight friction in the relative movement of the lever arm 40 along the stop pin 46 can be achieved. Upon further lifting of the lifting carriage 17 by means of the lifting device 30, the load section 19a enters the in the FIG. 6 shown folded-in rest position in which the load portions 19a, 19b abut the lifting carriage 17. In the FIG. 9 the truck 1 is shown in this position with folded load sections 19a, 19b. By means of the lifting drive 30 in this case the lifting carriage 17 can not be raised further, since the load section 19a and thus the lifting carriage 17 is clamped on the roller 44 on the stop pin 46 of the stop means 45, so that the lifting carriage 17 is fixed in height. Due to the arrangement of the stop means 45 in the lower region of the lifting device 15, the lifting slide 17 with the thereto attached hitch 25 in the rest position with folded load sections 19a, 19b only slightly raised and is located in the lowered position.

In der eingeklappten Ruhestellung der Lastabschnitte 19a, 19b (Figur 9) weist das erfindungsgemäße Flurförderzeug 1 somit die Funktion eines Schleppers auf, wobei an die an dem Hubschlitten 17 angeordnete Anhängevorrichtung 25 ein oder mehrere Anhänger angehängt und gezogen werden können. Durch die Fixierung des Hubschlittens 17 an dem Anschlagzapfen 46 mittels der an den Hebelarmen 40 angeordneten Rolle 44 wird ein sicherer Betrieb des Flurförderzeugs 1 in der Funktion als Schlepper, insbesondere während des Abbremsens, erzielt.In the folded-in rest position of the load sections 19a, 19b ( FIG. 9 ), the truck 1 according to the invention thus has the function of a tractor, wherein attached to the lifting slide 17 hitch 25 one or more trailers can be attached and pulled. By fixing the lifting carriage 17 to the stop pin 46 by means of the roller 44 arranged on the lever arms 44, a safe operation of the truck 1 in the function of a tractor, especially during deceleration, achieved.

Durch Absenken des Hubschlittens 17 mittels des Hubantriebs 30 können die Lastabschnitte 19a, 19b von der in der Figur 6 bzw. Figur 9 dargestellten eingeklappten Ruhestellung in die in der Figur 3 bzw. Figur 8 dargestellte ausgeklappte Arbeitsstellung verschwenkt werden. Anschließen kann das Anschlagmittel 45 in die Außerbetriebsstellung betätigt werden, in der der Anschlagzapfen 46 durch entsprechende Betätigung der Betätigungseinrichtung 47 soweit in Richtung des Pfeiles 48 nach in der Figur 3 links bewegt ist, dass der Anschlagzapfen 46 nicht mehr mit der an den Hebelarmen 40 angeordneten Rolle 44 in Anlage und somit Wirkverbindung gelangen kann. Der Hubschlitten 17 kann somit in der Außerbetriebsstellung des Anschlagmittels 45 mittels des Hubantriebs 30 in dem als Standmast ausgebildeten Hubmast 16 vollständig angehoben und abgesenkt werden. Das erfindungsgemäße Flurförderzeug 1 (Figuren 1 und 7) weist somit in der Außerbetriebsstellung des Anschlagmittels 45 die Funktion eines Gabelstaplers auf, mit dem die vorher gezogenen Anhänger be- und entladen und Lasten beispielsweise in ein Regal ein- oder ausgelagert werden können.By lowering the lifting carriage 17 by means of the lifting drive 30, the load sections 19a, 19b of the in the FIG. 6 respectively. FIG. 9 shown folded in the rest position in the in the FIG. 3 respectively. FIG. 8 shown unfolded working position to be pivoted. Connecting the stop means 45 can be operated in the inoperative position in which the stop pin 46 by appropriate actuation of the actuator 47 as far in the direction of arrow 48 in the FIG. 3 is moved left that the stop pin 46 can no longer get into contact with the arranged on the lever arms 40 roller 44 and thus operative connection. The lifting carriage 17 can thus be fully raised and lowered in the inoperative position of the stop means 45 by means of the lifting drive 30 in the mast 16 designed as a stationary mast. The industrial truck 1 ( FIGS. 1 and 7 ) thus has in the inoperative position of the stop means 45, the function of a forklift truck with which the previously drawn trailer loaded and unloaded and loads can be, for example, on a shelf or outsourced.

Bei dem erfindungsgemäßen Flurförderzeug 1 können die Lastabschnitte 19a, 19b ohne zusätzliche Antriebseinrichtungen durch Betätigen der Hubvorrichtung 15 mittels des Hubantriebs 30 und somit durch Verwendung des Hubantriebs 30 und Anheben bzw. Absenken des Hubschlitten 17 mittels des zwischen der Betriebsstellung und der Außerbetriebsstellung bewegbaren Anschlagmittels 45 auf einfache Weise und mit geringem Bauaufwand in die Ruhestellung eingeklappt bzw. in die Arbeitsstellung ausgeklappt werden. Hierdurch wird weiterhin ein schneller Wechsel des Flurförderzeugs 1 von der Funktion als Schlepper in die Funktion als Gabelstapler und umgekehrt und somit eine hohe Umschlagleistung des Flurförderzeugs erzielt. Die Bedienperson kann hierbei die Betätigungseinrichtung 47 des Anschlagmittels 45 von dem Fahrerarbeitsplatz 4 aus bedienen und ansteuern, so dass das Ein- und Ausklappen der Lastabschnitte 19a, 19b sicher, ergonomisch günstig und ohne körperliche Anstrengungen und ohne den Fahrerarbeitsplatz 4 verlassen zu müssen durchgeführt werden kann.In the truck 1 according to the invention, the load sections 19a, 19b without additional drive means by operating the lifting device 15 by means of the lifting drive 30 and thus by using the lifting drive 30 and raising or lowering of the lifting carriage 17 by means of movable between the operating position and the inoperative position stop means 45 simple way and with low construction costs are folded into the rest position or folded into the working position. In this way, a quick change of the truck 1 from the function as a tractor in the function as a forklift and vice versa and thus achieves a high turnover of the truck. The operator can in this case operate and control the actuating device 47 of the stop means 45 from the driver's workplace 4, so that the folding and unfolding of the load sections 19a, 19b can be carried out safely, ergonomically favorably and without physical effort and without the driver's workplace 4 ,

Anstelle eines Anschlagmittels 45 und der Verbindung der beiden Lastabschnitte 19a, 19b mittels der Koppelstrebe 55 kann ebenfalls für jeden klappbaren Lastabschnitt 19a, 19b ein entsprechendes Anschlagmittel 45 vorgesehen werden.Instead of a stop means 45 and the connection of the two load sections 19a, 19b by means of the coupling strut 55, a corresponding stop means 45 can likewise be provided for each foldable load section 19a, 19b.

Claims (17)

  1. Industrial truck (1), in particular battery-operated electric industrial truck, with a lifting apparatus (15), in particular a lifting mast (16), on which a lifting carriage (17) provided with a load pickup means (20) is arranged in such a way that it can be moved up and down and is driveable by means of a lifting drive (30), wherein the load pickup means (20) is formed by at least one foldable load section (19a; 19b), which is pivotable about a substantially horizontal pivot axle (18) between an unfolded working position and a folded-in rest position, wherein the load section (19a; 19b) is provided with a lever arm (40) arranged opposite the pivot axle (18), which lever arm can be operatively connected to a stop means (45), wherein, by actuation of the lifting apparatus (15), the load section (19a; 19b) is pivotable between the working position and the rest position, characterized in that the stop means (45) is actuable, by means of an actuating device (47), between an operating position and an out-of-operation position, wherein the actuating device (47) is formed by a hydraulic cylinder or by an electric drive, in particular a linear electric drive.
  2. Industrial truck according to Claim 1, characterized in that, in the operating position, the stop means (45) can be operatively connected to the lever arm (40) for pivoting the load section (19a; 19b).
  3. Industrial truck according to Claim 1 or 2, characterized in that the stop means (45) is movable translationally, in particular in the longitudinal direction of the load section (19a; 19b).
  4. Industrial truck according to one of Claims 1 to 3, characterized in that the load section (19a; 19b) is provided with lateral cheeks (41), on which in each case one bearing bore (42) for the pivot axle (18) is formed, wherein the lever arm (40) is formed on at least one cheek (41).
  5. Industrial truck according to one of Claims 1 to 4, characterized in that a rotatable roller (44) is arranged on the lever arm (40).
  6. Industrial truck according to Claim 4 or 5, characterized in that a lever arm (40) is formed on each lateral cheek (41), with an accommodating bolt being arranged therebetween.
  7. Industrial truck according to one of Claims 1 to 6, characterized in that the stop means (45) is fastened on a guide (50), in particular a linear guide.
  8. Industrial truck according to one of Claims 1 to 7, characterized in that the stop means (45) is formed by a stop pin (46).
  9. Industrial truck according to one of Claims 1 to 8, characterized in that the stop means (45) is arranged in the lower region of the lifting apparatus (15).
  10. Industrial truck according to one of Claims 1 to 9, characterized in that the stop means (45) is fastened on the industrial truck (1).
  11. Industrial truck according to one of Claims 1 to 10, characterized in that the stop means (45) is fastened on the lifting apparatus (15), in particular a stationary mast (16).
  12. Industrial truck according to one of Claims 1 to 11, characterized in that the lifting carriage (17) is in the form of a fork carrier and the load pickup means (20) is formed by two laterally spaced-apart fork prongs, which each have a fork back, on which a load section (19a; 19b) is mounted pivotably and with which the fork prong is fastened on the lifting carriage (17).
  13. Industrial truck according to one of Claims 1 to 12, characterized in that the lifting carriage (17) is in the form of a fork carrier, on which two laterally spaced-apart load sections (19a, 19b) of the load pickup means (20) are mounted pivotably.
  14. Industrial truck according to Claim 12 or 13, characterized in that in each case one stop means (45) is provided for each of the two foldable load sections (19a, 19b).
  15. Industrial truck according to Claim 12 or 13, characterized in that a stop means (45) is provided for one of the two foldable load sections (19a; 19b), wherein the foldable load sections (19a, 19b) are operatively connected to one another, in particular by means of a coupling strut (50).
  16. Industrial truck according to one of Claims 1 to 15, characterized in that the industrial truck (1) is provided with a trailer apparatus (25) in the region of the lifting apparatus (15).
  17. Industrial truck according to Claim 16, characterized in that the trailer apparatus (25) is arranged on the lifting carriage (17).
EP20090010945 2008-09-19 2009-08-26 Industrial truck with a load bearer comprising at least one foldable load section Not-in-force EP2165966B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008048053 2008-09-19
DE102008057665A DE102008057665A1 (en) 2008-09-19 2008-11-17 Truck with a at least one folding load section comprehensive load handling equipment

Publications (3)

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EP2165966A2 EP2165966A2 (en) 2010-03-24
EP2165966A3 EP2165966A3 (en) 2012-01-25
EP2165966B1 true EP2165966B1 (en) 2013-01-02

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EP20090010945 Not-in-force EP2165966B1 (en) 2008-09-19 2009-08-26 Industrial truck with a load bearer comprising at least one foldable load section

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DE (1) DE102008057665A1 (en)

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Publication number Priority date Publication date Assignee Title
CN103112802A (en) * 2013-02-06 2013-05-22 南京沃力机电科技有限公司 Electric pallet truck

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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
CN113442779A (en) * 2020-03-25 2021-09-28 广东博智林机器人有限公司 Battery taking and placing tray, battery replacing robot and battery replacing method
IT202100005171A1 (en) * 2021-03-05 2022-09-05 Toppy S R L DEVICE FOR SEPARATING A LOAD FROM THE PALLET THAT SUPPORTS IT
CN113548607B (en) * 2021-07-20 2022-11-01 汉耐特电气有限公司 Intelligent circuit breaker lifting maintenance platform truck
CN114329707A (en) * 2021-12-24 2022-04-12 重庆市工程管理有限公司 BIM technology-based medical equipment hoisting method

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Publication number Priority date Publication date Assignee Title
DD58268A1 (en) 1966-12-14 1967-10-05 Folding fork as an attachment for forklift trucks
DE9411019U1 (en) * 1994-07-04 1994-09-01 Max Boll Maschinen Und Stahlba Loading fork for attachment to a lifting device on a tractor, forklift or the like.
EP1015377A4 (en) * 1997-05-02 2002-02-13 Southland Sod Farms Mechanism to fold and unfold truck forks
DE20308664U1 (en) * 2003-06-03 2004-10-07 Kinshofer Greiftechnik Gmbh & Co. Kg lifting fork

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103112802A (en) * 2013-02-06 2013-05-22 南京沃力机电科技有限公司 Electric pallet truck
CN103112802B (en) * 2013-02-06 2015-09-30 南京沃力机电科技有限公司 A kind of electrocar

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Publication number Publication date
EP2165966A3 (en) 2012-01-25
EP2165966A2 (en) 2010-03-24
DE102008057665A1 (en) 2010-04-08

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