EP2208704A1 - Fork tooth for a load fork of an industrial truck. - Google Patents

Fork tooth for a load fork of an industrial truck. Download PDF

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Publication number
EP2208704A1
EP2208704A1 EP10000089A EP10000089A EP2208704A1 EP 2208704 A1 EP2208704 A1 EP 2208704A1 EP 10000089 A EP10000089 A EP 10000089A EP 10000089 A EP10000089 A EP 10000089A EP 2208704 A1 EP2208704 A1 EP 2208704A1
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EP
European Patent Office
Prior art keywords
fork
sensor
truck
support arm
control unit
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Granted
Application number
EP10000089A
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German (de)
French (fr)
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EP2208704B1 (en
Inventor
Eckhard Schulz
Martin Von Werder
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Jungheinrich AG
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Jungheinrich AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/0755—Position control; Position detectors
    • 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

Definitions

  • the invention relates to a fork prong for a forklift of a truck according to claim 1.
  • the typical load handler for a truck is a fork. It is used in particular for the transport of load carriers, such as pallets or the like.
  • the fork consists of at least two forks or fork arms. In the following description, the fork tine is understood as the complete unit of support arm and fork back.
  • the forks are mounted with the fork back on a fork carriage. The attachment is usually by hanging in the fork carriage, the distance between the forks can be adjusted to each other.
  • the load to be absorbed is absorbed by the arms of the forks.
  • the invention has for its object to provide a fork for a truck, with the occupancy can be determined with a load in a simple and inexpensive way.
  • a sensor is arranged in a bore of the fork back preferably near the support arm, which detects the presence of a load on the support arm.
  • the sensor is connected to a communication means at the fork back for transmitting the sensor signal to the truck.
  • the arrangement of the sensor within a hole in the fork back has the advantage that the sensor is protected against external influences. It has the further advantage that the sensor is very close to the recorded load, so its range needs only a portion of the support arm rich. The sensor can therefore be built very small and relatively insensitive.
  • the senor must be supplied with voltage and, on the other hand, its signal must be transmitted to the truck. This happens e.g. via a cable which is guided along the back of the fork back and has at the end of a plug part which is connected via a plug connection with the truck.
  • the plug connection on the truck is connected to an evaluation device on the truck, which can transmit the received signal by means of a radio transmission to a stationary control center.
  • the sensor can with an integrated control unit of the fork tine, preferably on his back, with other components, eg. B. RFID antenna or reader on the fork back to be connected to the support arm.
  • the central control unit can also be designed as RFID reader and RFID antenna.
  • the central control unit communicates with an evaluation unit on the truck, either wirelessly, z. B. via WLAN, Bluetooth or the like. A line connection and plug connection is also possible.
  • a miniaturized integrated in the fork back gear unit which preferably includes an integrated RFID reader, has the advantage that the required connection for the smart forklift connection line must include only the power supply and the data line.
  • a complex, shielded connection cable for the application of the RFID antenna can be omitted. This would otherwise be arranged, for example, on the top of the fork back.
  • an energy storage is integrated in the tine, such as a battery or a capacitor
  • any line connection between fork and truck can be omitted.
  • the charging of the energy storage can be done either via a charging cable or wirelessly by an inductive coupling is made to a charger.
  • the fork tine on an inductance, which can be coupled to the stationary primary inductance of the charger to charge the energy storage.
  • the latter can e.g. a laid in the corridor line, the e.g. at the loading station for the industrial truck.
  • the single FIGURE shows a side view partly in section of a fork invention.
  • a fork tine 10 can be seen, which has a fork back 12 and a support arm 14.
  • Fork back 12 and support arm 14 are integrally molded.
  • the fork back 22 has at the back spaced hook portions 16, 18 which are suspended in a so-called load carriage or fork carriage. It is neither the fork carriage nor the truck shown. These parts are conventional.
  • a bore 20 is provided, in which a sensor 22 is arranged.
  • the sensor is e.g. an optical sensor in the form of a reflection light barrier, an ultrasonic sensor, a microwave sensor or the like. It is capable of detecting an obstacle on the support arm 14.
  • the detectable by the sensor 22 area is shown hatched at 24 in the figure. It only extends slightly over half of the support arm 14, which, however, is quite sufficient to detect the presence of a load, such as a load carrier, such as a pallet.
  • the sensor may additionally be designed as a distance sensor which measures the distance to the load on the support arms.
  • the sensor 22 is connected to a cable 26 which is protected at the back of the fork back 12 is guided to a miniaturized control unit 28.
  • the control unit is connected to a cable 30 having a plug 32 for connection to a plug contact on the side of the not shown industrial truck. Via cable 30, e.g. both the voltage for the sensor 22 and the sensor signal are transmitted.
  • an RFID antenna 34 is integrated in the front region of the support arm 14.
  • a cable section 36 within or below the support arm 14 merges with the cable 26 or leads separately to the control unit 28, which may also contain a so-called RFID reader.
  • the control unit 28 is connected to an antenna 38 at the top of the fork back 12.
  • information from a transponder on a pallet or the like which is arranged on the support arm 14 or in front of the support arm or is arranged in the region of a storage rack, are received and transmitted by means of the antenna 38 to a corresponding receiver in the truck.
  • the truck transmits presence or absence of a load on the support arm 14 or information of an external transponder received by the RFID antenna 34 to the truck.
  • the truck can in turn evaluate the information received and / or transmitted to a control center by radio.
  • the control unit 28 is advantageously accommodated in a recess on the rear side of the fork back 12. She is shown exaggeratedly large in the figure.
  • the miniaturized form allows only a very small recess, so that material weakening is not to be feared on a significant scale.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The arm (10) has a distance sensor (22) arranged adjacent to a carrier arm (14) in a bore hole (20) of a fork face (12), and detecting presence of a load on the carrier arm. The sensor is connected with a communication unit at the fork surface for transmitting a sensor signal to an industrial truck. The sensor is connected with a control unit (28) that is attached to the fork surface. The control unit is connected with an antenna (38) at the fork surface or with the truck via a data line. A radio frequency identification antenna (34) is integrated in a front region of the carrier arm.

Description

Die Erfindung bezieht sich auf eine Gabelzinke für eine Lastgabel eines Flurförderzeugs nach Patentanspruch 1.The invention relates to a fork prong for a forklift of a truck according to claim 1.

Das typische Lastaufnahmemittel für ein Flurförderzeug ist eine Lastgabel. Sie wird insbesondere zum Transport von Ladungsträgern, wie Paletten oder dergleichen verwendet. Die Lastgabel besteht aus mindestens zwei Gabelzinken oder Gabelarmen. In der nachstehenden Beschreibung wird die Gabelzinke als die komplette Einheit aus Tragarm und Gabelrücken verstanden. Die Gabelzinken werden mit dem Gabelrücken an einem Gabelträger angebracht. Die Anbringung erfolgt zumeist durch Einhängen in den Gabelträger, wobei der Abstand der Gabelzinken zueinander eingestellt werden kann. Die aufzunehmende Last wird von den Tragarmen der Gabelzinken aufgenommen.The typical load handler for a truck is a fork. It is used in particular for the transport of load carriers, such as pallets or the like. The fork consists of at least two forks or fork arms. In the following description, the fork tine is understood as the complete unit of support arm and fork back. The forks are mounted with the fork back on a fork carriage. The attachment is usually by hanging in the fork carriage, the distance between the forks can be adjusted to each other. The load to be absorbed is absorbed by the arms of the forks.

Für die sogenannte Intralogistik, der unternehmensinternen Logistik, beispielsweise in einem Lagerbetrieb, ist bekannt, Ladungsträger, z.B. Paletten, mit Tags bzw. Transpondern auszurüsten. Diese können dann von Lesegeräten am Flurförderzeug gelesen werden. Das Flurförderzeug weist seinerseits eine Sende- und Empfangsvorrichtung auf, um die empfangenen Daten in eine Verwaltungszentrale zu überspielen. Die Kommunikation zwischen den Ladungsträgern und dem Flurförderzeug bzw. zwischen dem Flurförderzeug und einer stationären Empfangseinheit erfolgt typischerweise nach der RFID-Technologie.For the so-called intralogistics, internal logistics, for example in a warehouse, it is known to equip carriers, eg pallets, with tags or transponders. These can then be read by readers on the truck. The truck in turn has a transmitting and receiving device to transfer the received data into a management center. The communication between the load carriers and the truck or between the truck and a stationary receiving unit is typically carried out according to the RFID technology.

Um sicherstellen zu können, ob beim Flurförderzeug die Gabel mit einer Last belegt ist, ist bekannt, einen Sensor einzusetzen, der feststellt, ob eine Lastgabel leer oder beladen ist. Zu dem Zweck ist bekannt, mit Hilfe einer zusätzlichen Halterung oder in einem Gehäuse am Flurförderzeug integriert einen Sensor unterzubringen. Diese Anbringung hat den Nachteil, dass Halterung und Sensor beim Betrieb des Flurförderzeugs nicht nur stark zerstörungsgefährdet sind, sondern auch die Sicht des Bedieners auf die Gabelzinken einschränken kann. Bei einer solchen Ausführungsform eines Gabellastsensors ist ein zusätzlicher Montageaufwand im Hinblick auf die Halterung bzw. das Gehäuse erforderlich.To make sure that the fork is loaded with a load on the truck, it is known to use a sensor that detects whether a fork is empty or loaded. For the purpose is known, with the help of an additional bracket or integrated in a housing on the truck to accommodate a sensor. This attachment has the disadvantage that the holder and sensor in the operation of the truck are not only highly destructive, but also can limit the operator's view of the forks. In such an embodiment of a fork load sensor, an additional installation effort in terms of the holder or the housing is required.

Der Erfindung liegt die Aufgabe zugrunde, eine Gabelzinke für ein Flurförderzeug zu schaffen, mit der auf einfache und auch unaufwendige Weise die Belegung mit einer Last festgestellt werden kann.The invention has for its object to provide a fork for a truck, with the occupancy can be determined with a load in a simple and inexpensive way.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.

Bei der erfindungsgemäßen Gabelzinke ist in einer Bohrung des Gabelrückens vorzugsweise nahe dem Tragarm ein Sensor angeordnet, der die Anwesenheit einer Last auf dem Tragarm erfasst. Der Sensor ist mit einem Kommunikationsmittel am Gabelrücken verbunden zur Übertragung des Sensorsignals auf das Flurförderzeug.In the fork according to the invention, a sensor is arranged in a bore of the fork back preferably near the support arm, which detects the presence of a load on the support arm. The sensor is connected to a communication means at the fork back for transmitting the sensor signal to the truck.

Um eine Bauteilschwächung in dem hoch belasteten Bereich des Gabelrückens durch die Bohrung auszugleichen, ist möglicherweise erforderlich, eine entsprechende konstruktive Anpassung der Gabelzinke vorzunehmen.To compensate for a component weakening in the high-load area of the fork back through the hole, it may be necessary to make a corresponding structural adjustment of the fork.

Die Anordnung des Sensors innerhalb einer Bohrung im Gabelrücken hat den Vorteil, dass der Sensor gegen äußerliche Einwirkungen geschützt ist. Sie hat den weiteren Vorteil, dass der Sensor sehr nahe an der aufgenommenen Last ist, daher braucht seine Reichweite nur über eine Teilstrecke des Tragarms reichen. Der Sensor kann daher sehr klein bauen und relativ unempfindlich eingestellt werden.The arrangement of the sensor within a hole in the fork back has the advantage that the sensor is protected against external influences. It has the further advantage that the sensor is very close to the recorded load, so its range needs only a portion of the support arm rich. The sensor can therefore be built very small and relatively insensitive.

Der Sensor muss einerseits mit Spannung versorgt werden und zum anderen muss sein Signal auf das Flurförderzeug übertragen werden. Dies geschieht z.B. über ein Kabel, das entlang der Rückseite des Gabelrückens geführt ist und am Ende ein Steckerteil aufweist, das über eine Steckverbindung mit dem Flurförderzeug verbunden ist. Der Steckanschluss am Flurförderzeug ist mit einer Auswertevorrichtung am Flurförderzeug verbunden, welche mittels einer Funkübertragung das empfangene Signal auf eine stationäre Zentrale übertragen kann.On the one hand, the sensor must be supplied with voltage and, on the other hand, its signal must be transmitted to the truck. This happens e.g. via a cable which is guided along the back of the fork back and has at the end of a plug part which is connected via a plug connection with the truck. The plug connection on the truck is connected to an evaluation device on the truck, which can transmit the received signal by means of a radio transmission to a stationary control center.

Der Sensor kann mit einer integrierten Steuereinheit der Gabelzinke, vorzugsweise an seinem Rücken, mit weiteren Komponenten, z. B. RFID-Antenne bzw. Reader am Gabelrücken an dem Tragarm verbunden sein. Die zentrale Steuereinheit kann auch als RFID-Reader und RFID-Antenne ausgeführt sein. Die zentrale Steuereinheit kommuniziert mit einer Auswerteeinheit am Flurförderzeug, entweder drahtlos, z. B. per WLAN, Bluetooth oder ähnlichem. Eine Leitungsverbindung und Steckverbindung ist natürlich auch möglich.The sensor can with an integrated control unit of the fork tine, preferably on his back, with other components, eg. B. RFID antenna or reader on the fork back to be connected to the support arm. The central control unit can also be designed as RFID reader and RFID antenna. The central control unit communicates with an evaluation unit on the truck, either wirelessly, z. B. via WLAN, Bluetooth or the like. A line connection and plug connection is also possible.

Bei der Erfindung wird nicht nur die Betriebssicherheit durch den geschützten Sensor gewährleistet, sondern auch die freie Sicht des Fahrers auf die Gabelzinken ermöglicht. Wird in den Tragarm eine RFID-Antenne integriert, hat das den Vorteil, dass zum Anschluss sowohl des Sensors als auch dieser Antenne nur ein kombiniertes Kabel für die Spannungsversorgung, Datenübermittlung und den Antennenschluss erforderlich ist. Dieses Kabel kann, wie oben bereits erwähnt, auf einfache Weise mit einer fahrzeugseitigen Anschlussleitung verbunden werden.In the invention, not only the reliability is ensured by the protected sensor, but also allows the driver's clear view of the forks. If an RFID antenna is integrated into the support arm, this has the advantage that only a combined cable for the power supply, data transmission and the antenna connection is required for the connection of both the sensor and this antenna. As already mentioned above, this cable can be easily connected to a vehicle-side connection line.

Durch die erwähnte Integration sowohl einer RFID-Antenne als auch die erfindungsgemäße Lastsensierung in die Gabelzinke ergibt sich eine "intelligente" Gabelzinke. Diese lässt sich am Flurförderzeug durch einen einfachen Austausch mit einer herkömmlichen Gabelzinke auf einfache und unkomplizierte Weise einsetzen, so dass ein Flurförderzeug auf diese Weise eine automatisierte Kommunikation mit RFID-Transpondern an Ladungsträgern ausgerüstet werden kann. Dies setzt naturgemäß entsprechende Komponenten am Flurförderzeug voraus. Daraus ergibt sich dann eine sogenannte "Plug-and-Play"-Lösung.The mentioned integration of both an RFID antenna and the inventive load sensing in the fork prong results in an "intelligent" fork. This can be used on the truck in a simple and straightforward way by simply exchanging it with a conventional fork tine, so that an industrial truck can be equipped with automated transponder-to-carrier transponder communication in this way. This naturally requires appropriate components on the truck. This then results in a so-called "plug-and-play" solution.

Eine miniaturisierte in den Gabelzinkenrücken integrierte Steuereinheit, die vorzugsweise einen integrierten RFID-Reader enthält, hat den Vorteil, dass die zum Anschluss der intelligenten Gabelzinke erforderliche Anschlussleitung nur die Spannungsversorgung und die Datenleitung umfassen muss. Eine aufwendige, abgeschirmte Anschlussleitung zur Anwendung der RFID-Antenne kann entfallen. Diese würde ansonsten z.B. auf der Oberseite des Gabelrückens angeordnet sein.A miniaturized integrated in the fork back gear unit, which preferably includes an integrated RFID reader, has the advantage that the required connection for the smart forklift connection line must include only the power supply and the data line. A complex, shielded connection cable for the application of the RFID antenna can be omitted. This would otherwise be arranged, for example, on the top of the fork back.

Die Verwendung drahtloser Kommunikationsmittel zur Kommunikation mit dem Flurförderzeug ermöglicht ein besonders einfaches Verbindungskabel zum Flurförderzeug zwecks Spannungsversorgung.The use of wireless communication means for communication with the truck allows a particularly simple connection cable to the truck for power supply.

Falls nach einer Ausgestaltung der Erfindung ein Energiespeicher in die Zinke integriert ist, beispielsweise eine Batterie oder ein Kondensator, kann jegliche Leitungsverbindung zwischen Gabelzinke und Flurförderzeug entfallen. Die Aufladung des Energiespeichers kann entweder über ein Ladekabel erfolgen oder drahtlos, indem eine induktive Kopplung zu einem Ladegerät hergestellt wird. Bei dieser Ausgestaltung der Erfindung weist die Gabelzinke eine Induktivität auf, die mit der stationären Primärinduktivität des Ladegeräts gekoppelt werden kann, um den Energiespeicher aufzuladen. Letztere kann z.B. eine im Flur verlegte Leitung sein, die z.B. an der Ladestation für das Flurförderzeug verlegt ist.If according to one embodiment of the invention, an energy storage is integrated in the tine, such as a battery or a capacitor, any line connection between fork and truck can be omitted. The charging of the energy storage can be done either via a charging cable or wirelessly by an inductive coupling is made to a charger. In this embodiment of the invention, the fork tine on an inductance, which can be coupled to the stationary primary inductance of the charger to charge the energy storage. The latter can e.g. a laid in the corridor line, the e.g. at the loading station for the industrial truck.

Die Erfindung soll nachfolgend anhand eines in einer Zeichnung dargestellten Ausführungsbeispiels näher erläutert werden.The invention will be explained in more detail with reference to an embodiment shown in a drawing.

Die einzige Figur zeigt eine Seiteansicht teilweise im Schnitt einer erfindungsgemäßen Gabelzinke.The single FIGURE shows a side view partly in section of a fork invention.

In der Figur ist eine Gabelzinke 10 zu erkennen, die einen Gabelrücken 12 und einen Tragarm 14 aufweist. Gabelrücken 12 und Tragarm 14 sind einteilig geformt. Der Gabelrücken 22 weist an der Rückseite beabstandete Hakenabschnitte 16, 18 auf, die in einen sogenannten Lastschlitten oder Gabelträger eingehängt werden. Es ist weder der Gabelträger noch das Flurförderzeug dargestellt. Diese Teile sind konventionell.In the figure, a fork tine 10 can be seen, which has a fork back 12 and a support arm 14. Fork back 12 and support arm 14 are integrally molded. The fork back 22 has at the back spaced hook portions 16, 18 which are suspended in a so-called load carriage or fork carriage. It is neither the fork carriage nor the truck shown. These parts are conventional.

Im unteren Bereich des Gabelrückens 12 nahe dem Tragarm 14 ist eine Bohrung 20 vorgesehen, in welcher ein Sensor 22 angeordnet ist. Der Sensor ist z.B. ein optischer Sensor in Form einer Reflexionslichtschranke, ein Ultraschallsensor, ein Mikrowellensensor oder dergleichen. Er ist geeignet, ein Hindernis auf dem Tragarm 14 festzustellen. Der vom Sensor 22 erfassbare Bereich ist in der Figur schraffiert bei 24 dargestellt. Er reicht nur etwas über die Hälfte des Tragarms 14, was jedoch völlig ausreicht, um die Anwesenheit einer Last, beispielsweise eines Lastträgers, wie etwa einer Palette, festzustellen. Der Sensor kann zusätzlich als Abstandssensor ausgebildet sein, der den Abstand zur Last auf den Tragarmen misst.In the lower region of the fork back 12 near the support arm 14, a bore 20 is provided, in which a sensor 22 is arranged. The sensor is e.g. an optical sensor in the form of a reflection light barrier, an ultrasonic sensor, a microwave sensor or the like. It is capable of detecting an obstacle on the support arm 14. The detectable by the sensor 22 area is shown hatched at 24 in the figure. It only extends slightly over half of the support arm 14, which, however, is quite sufficient to detect the presence of a load, such as a load carrier, such as a pallet. The sensor may additionally be designed as a distance sensor which measures the distance to the load on the support arms.

Der Sensor 22 ist mit einem Kabel 26 verbunden, das geschützt an der Rückseite des Gabelrückens 12 geführt ist zu einer miniatursierten Steuereinheit 28. Die Steuereinheit ist mit einem Kabel 30 verbunden, das einen Stecker 32 aufweist zur Verbindung mit einem Steckkontakt auf Seiten des nicht gezeigten Flurförderzeugs. Über das Kabel 30 kann z.B. sowohl die Spannung für den Sensor 22 als auch das Sensorsignal übertragen werden.The sensor 22 is connected to a cable 26 which is protected at the back of the fork back 12 is guided to a miniaturized control unit 28. The control unit is connected to a cable 30 having a plug 32 for connection to a plug contact on the side of the not shown industrial truck. Via cable 30, e.g. both the voltage for the sensor 22 and the sensor signal are transmitted.

Wie ferner in der Figur zu erkennen, ist eine RFID-Antenne 34 im vorderen Bereich des Tragarms 14 integriert. Ein Kabelabschnitt 36 innerhalb bzw. unterhalb des Tragarms 14 vereinigt sich mit dem Kabel 26 oder führt getrennt zu Steuereinheit 28, die auch einen sogenannten RFID-Reader enthalten kann. Die Steuereinheit 28 ist mit einer Antenne 38 an der Oberseite des Gabelrückens 12 verbunden. Mit Hilfe der Antenne 34 können Informationen von einem Transponder an einer Palette oder dergleichen, welche auf dem Tragarm 14 angeordnet ist oder auch vor dem Tragarm liegt oder im Bereich eines Lagerregals angeordnet ist, empfangen werden und mit Hilfe der Antenne 38 auf einen entsprechenden Empfänger im Flurförderzeug übertragen werden. Das Flurförderzeug überträgt dann Anwesenheit oder Nichtanwesenheit einer Last auf dem Tragarm 14 oder eine Information eines externen Transponders, die von der RFID-Antenne 34 aufgenommen wird, auf das Flurförderzeug. Das Flurförderzeug kann dann seinerseits die erhaltenen Informationen auswerten und/oder auf eine Zentrale per Funk übertragen.As can also be seen in the figure, an RFID antenna 34 is integrated in the front region of the support arm 14. A cable section 36 within or below the support arm 14 merges with the cable 26 or leads separately to the control unit 28, which may also contain a so-called RFID reader. The control unit 28 is connected to an antenna 38 at the top of the fork back 12. With the help of the antenna 34 information from a transponder on a pallet or the like, which is arranged on the support arm 14 or in front of the support arm or is arranged in the region of a storage rack, are received and transmitted by means of the antenna 38 to a corresponding receiver in the truck. The truck then transmits presence or absence of a load on the support arm 14 or information of an external transponder received by the RFID antenna 34 to the truck. The truck can in turn evaluate the information received and / or transmitted to a control center by radio.

Mit Hilfe der beschriebenen Konfiguration einer Gabelzinke ist es auf einfache Weise möglich, den Wechsel des Beladezustands eines Flurförderzeugs einem Lagerverwaltungssystem mitzuteilen, z.B. zusammen mit einer aktuellen Position des Flurförderzeugs. Wird, was nicht dargestellt ist, ein Energiespeicher in den Gabelrücken 32 integriert, kann die Aufladung des Energiespeichers kontaktlos erfolgen, beispielsweise auf induktivem Wege, so dass jegliche Kabelverbindung zwischen der Gabelzinke 10 und dem nicht gezeigten Flurförderzeug entfallen kann.With the aid of the described configuration of a fork tine, it is possible in a simple manner to communicate the change in the loading state of a fork-lift truck to a warehouse management system, e.g. together with a current position of the truck. If, which is not shown, an energy storage integrated into the fork back 32, the charging of the energy storage can be made contactless, for example, by inductive means, so that any cable connection between the fork 10 and the truck, not shown, can be omitted.

Die Steuereinheit 28 ist in vorteilhafter Weise in einer Ausnehmung an der Rückseite des Gabelrückens 12 untergebracht. Sie ist in der Figur übertrieben groß gezeigt. Die miniaturisierte Form ermöglicht nur eine sehr kleine Ausnehmung, so dass eine Materialschwächung im signifikanten Umfang nicht zu befürchten ist.The control unit 28 is advantageously accommodated in a recess on the rear side of the fork back 12. She is shown exaggeratedly large in the figure. The miniaturized form allows only a very small recess, so that material weakening is not to be feared on a significant scale.

Claims (13)

Gabelzinke für eine Lastgabel eines Flurförderzeugs, die einen Gabelrücken und einen Tragarm aufweist, dadurch gekennzeichnet, dass in einer Bohrung (20) des Gabelrückens (12) nahe dem Tragarm (14) ein Sensor (22) angeordnet ist, der die Anwesenheit einer Last auf den Tragarm (14) erfasst, und der Sensor (22) mit einem Kommunikationsmittel am Gabelrücken (12) verbunden ist zur Übertragung eines Sensorsignals auf das Flurförderzeug.Fork for a forklift truck of a truck, which has a fork back and a support arm, characterized in that in a bore (20) of the fork back (12) near the support arm (14), a sensor (22) is arranged, which detects the presence of a load detects the support arm (14), and the sensor (22) is connected to a communication means on the fork back (12) for transmitting a sensor signal to the truck. Gabelzinke nach Anspruch 1, dadurch gekennzeichnet, dass der Sensor mit einer einen Stecker (32) aufweisenden Leitung an der Rückseite des Gabelrückens (12) verbunden ist, wobei der Stecker (32) eine Steckverbindung mit einem Steckkontakt am Flurförderzeug bildet.Fork arm according to claim 1, characterized in that the sensor with a plug (32) having line at the back of the fork spine (12), said plug (32) forms a plug connection with a plug contact on the truck. Gabelzinke nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Sensor (22) mit einer am Gabelrücken (12) angebrachten Steuereinheit (28) verbunden ist, die ihrerseits mit einer Antenne (38) am Gabelrücken (12) oder über eine Datenleitung mit dem Flurförderzeug verbindbar ist.Fork according to claim 1 or 2, characterized in that the sensor (22) is connected to a forked back (12) mounted control unit (28), in turn, with an antenna (38) on the fork back (12) or via a data line with the Truck is connectable. Gabelzinke nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Gabelrücken (12) Mittel aufweist zur drahtlosen Kommunikation mit einem Empfänger am Flurförderzeug.Fork according to one of claims 1 to 3, characterized in that the fork back (12) has means for wireless communication with a receiver on the truck. Gabelzinke nach Anspruch 3, dadurch gekennzeichnet, dass im vorderen Bereich des Tragarms (14) eine RFID-Antenne integriert ist, die über eine im Tragarm (14) geführte Leitung (36) ebenfalls mit der Steuereinheit (28) verbindbar ist.Fork according to claim 3, characterized in that in the front region of the support arm (14) an RFID antenna is integrated, via a guided in the support arm (14) line (36) also with the control unit (28) is connectable. Gabelzinke nach Anspruch 2, 4 oder 5, dadurch gekennzeichnet, dass die Leitung auch eine Spannungsversorgungsleitung ist.Fork according to claim 2, 4 or 5, characterized in that the line is also a power supply line. Gabelzinke nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die Steuereinheit (28) in einer Ausnehmung (29) an der Rückseite des Gabelrückens (12) angeordnet ist.Fork according to one of claims 3 to 6, characterized in that the control unit (28) in a recess (29) on the back of the fork back (12) is arranged. Gabelzinke nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass in die Steuereinheit (28) ein RFID-Reader integriert ist.Fork tine according to one of claims 3 to 7, characterized in that in the control unit (28) an RFID reader is integrated. Gabelzinke nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass in den Gabelrücken (12) ein Energiespeicher für den Sensor (22) und/oder die Steuereinheit (28) integriert ist.Fork tine according to one of claims 1 to 8, characterized in that in the fork back (12) an energy storage for the sensor (22) and / or the control unit (28) is integrated. Gabelzinke nach Anspruch 9, dadurch gekennzeichnet, dass der Energiespeicher eine Batterie ist.Fork according to claim 9, characterized in that the energy store is a battery. Gabelzinke nach Anspruch 9, dadurch gekennzeichnet, dass der Energiespeicher ein Kondensator ist.Fork according to claim 9, characterized in that the energy store is a capacitor. Gabelzinke nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass in die Gabelzinke eine mit dem Energiespeicher verbundene Induktivität integriert ist, die mit einer externen, mit einem Ladegerät verbundenen Induktivität zusammenwirkt zwecks Aufladung des Energiespeichers.Fork according to claim 10 or 11, characterized in that in the fork prong an integrated with the energy storage inductor is integrated, which cooperates with an external, connected to a charger inductor for the purpose of charging the energy storage. Gabelzinke nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass der Sensor auch als Abstandssensor ausgebildet ist.Fork tine according to one of claims 1 to 12, characterized in that the sensor is also designed as a distance sensor.
EP10000089A 2009-01-15 2010-01-08 Fork tooth for a load fork of an industrial truck Active EP2208704B1 (en)

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DE102009004742A DE102009004742A1 (en) 2009-01-15 2009-01-15 Fork for a forklift of a truck

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ATE520620T1 (en) 2011-09-15
DE102009004742A1 (en) 2010-07-22

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