EP3026005A1 - Transponder reader module for fork shoe - Google Patents
Transponder reader module for fork shoe Download PDFInfo
- Publication number
- EP3026005A1 EP3026005A1 EP15192548.4A EP15192548A EP3026005A1 EP 3026005 A1 EP3026005 A1 EP 3026005A1 EP 15192548 A EP15192548 A EP 15192548A EP 3026005 A1 EP3026005 A1 EP 3026005A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fork
- reading module
- transponder reading
- shoe
- antenna
- 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.)
- Granted
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Classifications
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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
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
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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
Definitions
- the invention relates to a transponder reading module for a fork shoe of a forklift of a truck, a fork shoe and a system of these.
- the invention relates to a transponder reading module for a fork shoe of a fork tine of a truck with a transmitting and / or receiving device and with an antenna.
- transponders For load carriers, for example standardized Euro pallets, there are considerations of equipping them with transponders in order to be able to record, for example in merchandise management systems and warehouses, the movements and the positions of goods or of the load carriers.
- RFID tags There are various possibilities for attaching such transponders, for example RFID tags.
- a preferred option is the attachment of two transponders to a load carrier, such as a Euro pallet, wherein in each case a transponder is arranged on a middle block at two outer edges of the pallet connected via a corner. Due to the possibility of alignment in two polarization directions, such pallets are reliably detected by RFID gates when passing through.
- RFID gates are fixed gates with high-quality and complex RFID and antenna technology, which have reading and possibly also writing units.
- the transmitting and receiving devices of the readout device such as RFID antennas, directed outward on the outer sides of the Forks are located.
- Possibilities for such attachment are that the antenna is either already integrated in the fork, or in an additionally over-drawn fork shoe or possibly mounted in a modified combined form.
- a construction results in which the fork tine itself constitutes an essential part of the antenna, similar to the base plate of a monopole antenna arrangement forming the counter pole or reflector and / or director.
- mounted in a fork shoe is a complete and independently working antenna in one Construction integrated, usually a steel construction.
- a disadvantage of this prior art is that the introduction of the antenna into a receiving steel construction influences the radiation properties of the antenna, in particular its frequency response.
- An RF cable which is typically mechanically sensitive as coaxial cable, must be routed inside and out of the steel structure surrounding the antenna to provide the signals to the vehicle and controllers.
- the integration of the antenna and the surrounding steel structure is done by mechanically connecting, for example screwing, the individual parts to a total part, which has both electromagnetically and mechanically, in particular with regard to the seal against dust and moisture, new characteristics that the individual parts, especially the antenna, not individually or not to the same extent.
- the disadvantage therefore, must first of all be that the overall antenna geometry that forms is calculated, or a measurement with a possible adaptation of the antenna with respect to frequency response and emission characteristic is subsequently carried out. These adjustments or calculations must be very precise, which is potentially in conflict with the need as large as possible standard manufacturing tolerances of the surrounding steel construction or constructions in mass production.
- each encapsulated individual components antenna, readout unit, sensors and control unit is structurally not necessarily very robust as an RF connection between the antenna and readout unit, since a complete mechanical protection can not be implemented.
- the required connection between the antenna and the surrounding steel structure also creates great dependencies between the electromagnetic properties, in particular the radiation characteristic of the antenna, and the mechanical requirements, such as the seal. This in turn can lead to problems especially with the usual mechanical manufacturing tolerances for steel structures.
- a simple construction of the connections as well as a subsequent change or replacement of the components, in particular the antenna, is thereby also made more difficult. Again, these are special devices, in particular Gauges required.
- the present invention has for its object to provide a transponder reading module for a fork shoe, a fork and a system of these are available, which avoid the disadvantages mentioned above and with which even in a mass production always the same and safe functionality can be achieved.
- transponder reading module for a fork shoe of a fork tine of a truck with the features of independent claim 1, a fork shoe with the features of claim 9 and by a system of a transponder reading module and a fork shoe with the features of claim 12.
- the object is achieved in that in a transponder reading module for a fork shoe of a fork tine of a truck with a transmitting and / or receiving device and an antenna, at least the antenna is inserted into a plastic housing and the transponder reading module can be connected via a single connecting cable.
- the plastic part of the transponder reading module is permeable to electromagnetic radiation and can integrate all components in its cavity.
- the components have sufficient protection against mechanical damage, dust, dirt and moisture, so that, for example, requirements for an IP protection class can be met, as they are defined for electrical components.
- the significantly larger tolerances in the manufacture of the fork shoe as a steel component therefore do not play a disadvantageous role.
- the transponder reading module is connected to the fork shoe and mechanically secured in the usual way, for example by a few screws, without any special requirements for alignment during assembly or adjustment work is required.
- the result is a cost-effective and robust system solution that can be quickly assembled. Also, all components are combined in the transponder reading module. There are therefore no external or total only very short and thus low-loss high-frequency cables inside the plastic housing required and dase entire transponder reader module must be connected only via a connection cable that is marketable in a very robust embodiment as signal transmission or power supply cable available.
- the transponder reading module is easily replaceable and does not absorb any forces in its mounted position in the fork shoe.
- the plastic housing is set in a metallic U-profile.
- the proposed here metallic half-way through a U-profile By a defined or partial embedding of the plastic housing in a metal housing, for example, the proposed here metallic half-way through a U-profile, a high degree of robustness of the transponder reading module can be achieved with high manufacturing precision.
- the antenna can be adjusted to a desired radiation characteristic in this way.
- With defined attachment points of the metal housing a substantial insensitivity to tolerances of the production of the fork shoe can be achieved.
- the plastic housing further sensors, in particular an acceleration sensor or an optical sensor, such as two staggered optical sensors for generating a quadrature signal may be used.
- the transponder reading module is constructed with an elongate shape, preferably cuboid.
- the transponder reading module can easily be used as a unit in a fork shoe, if this fork shoe has on its rear side an opening with a compartment for the transponder reading module arranged for a lateral compartment next to the fork leg. At the same time only a small broadening of the fork shoe is required.
- the antenna may have a directivity laterally to the longitudinal extent of the transponder reading module.
- the antenna is oriented to the fork tip and arranged the transmitting and / or receiving device away from the fork tip.
- the transmitting and / or receiving device may be an RFID transmitting and / or receiving device.
- the transponder reading modules can be prefabricated as RFID modules, tested and delivered to the place of final assembly.
- the transponder reading module is encapsulated watertight.
- the fork shoe does not have to protect the transmitting and receiving devices of a wireless goods identification or, for example, an RFID element against such environmental influences.
- An open window may simply be provided on the fork shoe that does not affect the transmission and reception conditions of the antenna, and the transponder reading module itself may be optimized for optimized transmission and reception conditions.
- a fork shoe for a fork of a fork of a truck in which a receiving space for a transponder reading module as described above is separated by separating elements laterally in the longitudinal extent of the fork shoe, wherein for the range of the antenna of the transponder reading module of the fork shoes has lateral opening.
- Transponderlesemodul can be produced with defined transmission and reception conditions with low production spread and used in the fork.
- an antenna is not impaired in their properties.
- An undisturbed field coupling of the antenna with, for example, RFID tags can take place via the opening.
- the transponder reading module may be insertable into the receiving space from the end of the fork shoe.
- the transport module can be inserted through an opening on the side facing the fork carriage side of the fork shoe and advanced so far that the antenna comes to lie in front of the opening. This is particularly advantageous to implement, for example, if the transponder reading module has an elongated shape. In addition, it is conceivable to close the insertion at the end of the fork shoe after insertion. In this case, a connection cable of the transponder reading module can be led out of the fork shoe via this opening and is thus located on the entire relevant length of the fork prong in a protected interior of the fork shoe.
- the fork shoe is formed of metal, in particular steel, and the separating element consists of a continuous sheet metal.
- the transponder reader module is protected on all surfaces except the opening by the fork shoe. Due to the internal separation of the receiving space in the sense of a separate compartment, the transponder reading module is also protected against possible damage that might occur when the fork is introduced.
- the object is also achieved by a system comprising a transponder reading module and a fork shoe, as described above in each case.
- the system has the advantages already mentioned above.
- the two transponder reading modules are connected via a Y-cable, which determines a master / slave assignment via a coding of the connectors or a software algorithm.
- Two transponder reader modules can be efficiently connected via a Y-cable as connection cable.
- an assignment of master / slave can also take place at the same time by coding the plug connections.
- It can be a connection to a higher-level system, a power supply, for example, a terminal system.
- This connection can be performed in addition to a described wired and wireless, possibly combined with a teilautarken power supply such as a battery.
- a battery can be integrated in the transponder reading module, or in the same steel box or receiving space of the fork shoe.
- the Fig. 1 shows a charge carrier 1 according to the prior art with transponders 2.
- the load carrier 1 is a Euro pallet 3.
- the transponder 2 are arranged at two connected via a corner 4 sides of Europallette 3 each at an outer middle block 5.
- the transponders 2 are RFID transponders 6. As a result, the transponders 2 can transmit and receive in two polarization directions.
- the Fig. 2a schematically shows a fork shoe 7 according to the invention in a plan view. Laterally, a receiving space 8 is arranged, which is separated in the manufactured of steel sheets fork shoe 7 by a plate 9 as a separating element 10 from the space for a fork. A side opening 11 is provided in the receiving space 8 through which an antenna of an inserted transponder reading module can transmit and receive without interfering with the steel-made forked shoe.
- the Fig. 2b shows the fork shoe 7 of the Fig. 2a with a fork prong 12 and an inserted transponder reading module 13.
- the transponder reading module 13 is inserted into the receiving space 8 such that an antenna 14 comes to rest in front of the lateral opening 11.
- the sheet 9 as a separating element 10 the transponder reading module 13 is protected from damage during insertion of the fork tine 12.
- a connection cable 17 of the transponder reading module 13 is through the Receiving space 8 led out to the rear of the fork shoe 7 and is used to connect the transponder reading module 13th
- the transponder reading module 13 can be used in the fork shoe 7 as a prefabricated part that fulfills its specifications with prefabricated and very small series variations. As a result, equally good values for the transmitting and / or receiving power of the antenna can always be guaranteed. Also, the transponder reading module 13 can be designed as a robust unit that is insensitive to dirt and moisture.
- the Fig. 2c shows the fork shoe 7 of the Fig. 2a arranged with the transponder reading module 13 in front of the receiving space 8. As indicated by the arrow, the transponder reading module 13 is inserted from the end into the receiving space 8 of the fork shoe 7. Regardless of tolerances of the construction of the fork shoe 7, the transponder reading module 13 can be fastened to the fork shoe 7 by a few fastening means 15, for example through holes in the fork shoe 7.
- the Fig. 3a shows the transponder reading module 13 according to the invention in a side view.
- the transponder reading module 13 has an elongated, cuboidal structure, in which the antenna 14 is arranged in the direction of the tip of the fork prong in front of the RFID transmitting and receiving unit 18. Behind the RFID transmitting and receiving unit 18, a control and communication unit 19 with an additional, but not essential, acceleration sensor 20 is arranged.
- a sensor 21 for detecting the occupancy of a load-receiving means of the truck with a pallet can additionally be provided. This may be, for example, a laser sensor 22, which can detect objects on a fork.
- the Fig. 3b shows the transponder reading module 13 of Fig. 3a in supervision.
- the antenna 14 is directed outward when the transponder reading module 13 is inserted into the fork shoe 7, as shown for example in FIG Fig. 2b ,
- the Fig. 3c shows a cross section through the transponder reading module 13 of Fig. 3a in the region of the antenna 14.
- a plastic housing 23 are in an interior 24th the components, such as, for example, the antenna 14 which is provided with a directional effect in the illustration, and further components are arranged in a protected manner.
- the plastic housing 23 is inserted into a U-shaped metal profile 25 and sealed by a peripheral seal 26 with respect to this.
- the components in the interior 24 are protected from dirt and moisture.
- the plastic housing 23 also does not disturb the antenna 14 by electromagnetic shielding.
- the Fig. 4 shows two transponder reading modules 13 with a Y-cable 28, which is connected with connectors 27 to the connecting cables 17 of the transponder reading modules 13.
- By coding the connectors 27 is an assignment master / slave between the two transponders 13th
Abstract
Bei einem Transponderlesemodul für einen Gabelschuh einer Gabelzinke eines Flurförderzeugs mit einer Sende- und/oder Empfangseinrichtung (18) sowie mit einer Antenne (14), ist zumindest die Antenne (14) in ein Kunststoffgehäuse eingesetzt und das Transponderlesemodul (13) kann über ein einziges Anschlusskabel angeschlossen werden.In a transponder reading module for a fork shoe of a forklift of a truck with a transmitting and / or receiving device (18) and with an antenna (14), at least the antenna (14) is inserted in a plastic housing and the transponder reading module (13) can have a single Connection cable to be connected.
Description
Die Erfindung betrifft ein Transponderlesemodul für einen Gabelschuh einer Gabelzinke eines Flurförderzeugs, einen Gabelschuh sowie ein System aus diesen. Insbesondere betrifft die Erfindung ein Transponderlesemodul für einen Gabelschuh einer Gabelzinke eines Flurförderzeugs mit einer Sende- und/oder Empfangseinrichtung sowie mit einer Antenne.The invention relates to a transponder reading module for a fork shoe of a forklift of a truck, a fork shoe and a system of these. In particular, the invention relates to a transponder reading module for a fork shoe of a fork tine of a truck with a transmitting and / or receiving device and with an antenna.
Für Ladungsträger, beispielsweise genormte Europaletten, gibt es Überlegungen, diese mit Transpondern auszustatten, um beispielsweise in Warenwirtschaftssystemen und Lagern die Bewegungen sowie die Positionen von Waren bzw. der Ladungsträger erfassen zu können. Dabei bieten sich verschiedene Möglichkeiten an, solche Transponder, beispielsweise RFID-Tags, anzubringen. Eine bevorzugte Option ist dabei die Anbringung von zwei Transpondern an einem Ladungsträger, beispielsweise einer Europalette, wobei jeweils ein Transponder auf einem Mittelklotz an zwei über ein Eck verbundenen Außenkanten der Palette angeordnet ist. Durch die dadurch gegebene Möglichkeit der Ausrichtung in zwei Polarisationsrichtungen werden solche Paletten sicher von RFID-Gates erkannt beim Passieren. RFID-Gates sind ortsfeste Tore mit qualitativ hochwertiger und aufwendiger RFID-und Antennentechnik, die Lese- und gegebenenfalls auch Schreibeinheiten aufweisen.For load carriers, for example standardized Euro pallets, there are considerations of equipping them with transponders in order to be able to record, for example in merchandise management systems and warehouses, the movements and the positions of goods or of the load carriers. There are various possibilities for attaching such transponders, for example RFID tags. A preferred option is the attachment of two transponders to a load carrier, such as a Euro pallet, wherein in each case a transponder is arranged on a middle block at two outer edges of the pallet connected via a corner. Due to the possibility of alignment in two polarization directions, such pallets are reliably detected by RFID gates when passing through. RFID gates are fixed gates with high-quality and complex RFID and antenna technology, which have reading and possibly also writing units.
Um bei einem solchen Ladungsträger bzw. einer solchen Palette bei einer Aufnahme mit einer Lastgabel bzw. beim Einfahren der Gabelzinken den Transponder auslesen zu können, müssen die Sende- und Empfangseinrichtungen der Ausleseeinrichtung, beispielsweise RFID-Antennen, sich nach außen gerichtet an den Außenseiten der Gabelzinken befinden. Möglichkeiten für eine solche Anbringung sind dabei, dass die Antenne sich entweder bereits integriert in dem Gabelzinken, oder in einem zusätzlich übergezogenen Gabelschuh bzw. eventuell in einer abgewandelten kombinierten Form angebracht befindet. Bei einer Integrierung in den Gabelzinken ergibt sich eine Konstruktion, bei der die Gabelzinke selbst einen essenziellen Teil der Antenne darstellt, ähnlich wie die Grundplatte einer Monopol-Antennenanordnung, die zu dieser den Gegenpol, bzw. den Reflektor und/oder Direktor bildet. Bei einer Anbringung in einem Gabelschuh wird eine vollständige und eigenständig arbeitende Antenne in eine Konstruktion integriert, im Regelfall eine Stahlkonstruktion.In order to be able to read out the transponder in such a load carrier or such a pallet in a recording with a fork or when retracting the forks, the transmitting and receiving devices of the readout device, such as RFID antennas, directed outward on the outer sides of the Forks are located. Possibilities for such attachment are that the antenna is either already integrated in the fork, or in an additionally over-drawn fork shoe or possibly mounted in a modified combined form. When integrated into the forks, a construction results in which the fork tine itself constitutes an essential part of the antenna, similar to the base plate of a monopole antenna arrangement forming the counter pole or reflector and / or director. When mounted in a fork shoe is a complete and independently working antenna in one Construction integrated, usually a steel construction.
Nachteilig an diesem Stand der Technik ist, dass das Einbringen der Antenne in eine aufnehmende Stahlkonstruktion die Abstrahleigenschaften der Antenne beeinflusst, insbesondere deren Frequenzgang. Es muss ein HF-Kabel, das im Regelfall mechanisch empfindlich als Koaxialkabel ausgeführt ist, innerhalb der die Antenne umgebenden Stahlkonstruktion geführt und aus dieser herausgeleitet werden, um die Signale dem Fahrzeug und Steuergeräten zur Verfügung zu stellen.A disadvantage of this prior art is that the introduction of the antenna into a receiving steel construction influences the radiation properties of the antenna, in particular its frequency response. An RF cable, which is typically mechanically sensitive as coaxial cable, must be routed inside and out of the steel structure surrounding the antenna to provide the signals to the vehicle and controllers.
Die Integration der Antenne und der umgebenden Stahlkonstruktion geschieht durch mechanisches Verbinden, beispielsweise Verschrauben, der Einzelteile zu einem Gesamtteil, das sowohl elektromagnetisch, als auch mechanisch, insbesondere in Hinblick auf die Dichtung gegen Staub und Feuchtigkeit betreffend, neue Eigenschaften aufweist, die den Einzelteilen, speziell der Antenne, einzeln nicht oder nicht in dem gleichen Maß zukommen.The integration of the antenna and the surrounding steel structure is done by mechanically connecting, for example screwing, the individual parts to a total part, which has both electromagnetically and mechanically, in particular with regard to the seal against dust and moisture, new characteristics that the individual parts, especially the antenna, not individually or not to the same extent.
Nachteilig muss daher zuvor die sich bildende Antennen-Gesamtgeometrie berechnet werden bzw. nachträglich eine Vermessung mit einer eventuellen Anpassung der Antenne in Bezug auf Frequenzgang und Abstrahlcharakteristik erfolgen. Diese Anpassungen bzw. Berechnungen müssen sehr präzise sein, was potentiell im Konflikt mit dem Bedürfnis möglichst groß ausgelegter Standard-Fertigungstoleranzen der sie umgebenden Stahlkonstruktion bzw. Konstruktionen in der Serienfertigung steht.The disadvantage, therefore, must first of all be that the overall antenna geometry that forms is calculated, or a measurement with a possible adaptation of the antenna with respect to frequency response and emission characteristic is subsequently carried out. These adjustments or calculations must be very precise, which is potentially in conflict with the need as large as possible standard manufacturing tolerances of the surrounding steel construction or constructions in mass production.
Die Verkabelung der für sich jeweils gekapselten Einzelkomponenten Antenne, Ausleseeinheit, Sensorik sowie Steuereinheit ist strukturbedingt nicht unbedingt sehr robust als HF-Verbindung zwischen Antenne und Ausleseeinheit, da ein vollständiger mechanischer Schutz nicht umgesetzt werden kann. Die erforderliche Verbindung zwischen der Antenne und der umgebenden Stahlkonstruktion erzeugt weiterhin große Abhängigkeiten zwischen den elektromagnetischen Eigenschaften, insbesondere der Abstrahlcharakteristik der Antenne, und den mechanischen Anforderungen, wie beispielsweise an die Abdichtung. Dies kann wiederum speziell bei den für Stahlkonstruktionen üblichen mechanischen Fertigungstoleranzen zu Problemen führen. Ein einfacher Aufbau der Verbindungen sowie auch ein nachträglicher Wechsel bzw. Austausch der Komponenten, insbesondere der Antenne, wird dadurch ebenfalls erschwert. Auch hierfür sind dann wiederum spezielle Geräte, insbesondere Messgeräte erforderlich.The wiring of each encapsulated individual components antenna, readout unit, sensors and control unit is structurally not necessarily very robust as an RF connection between the antenna and readout unit, since a complete mechanical protection can not be implemented. The required connection between the antenna and the surrounding steel structure also creates great dependencies between the electromagnetic properties, in particular the radiation characteristic of the antenna, and the mechanical requirements, such as the seal. This in turn can lead to problems especially with the usual mechanical manufacturing tolerances for steel structures. A simple construction of the connections as well as a subsequent change or replacement of the components, in particular the antenna, is thereby also made more difficult. Again, these are special devices, in particular Gauges required.
Schließlich erfolgt bei einem Wechsel der Gabelzinken bzw. der Gabelschuhe wiederum eine starke Belastung der elektrischen Verbindungen. HF-Steckverbindungen oder auch verschraubte Verbindungen weisen oft nur eine begrenzte Anzahl an Verbindungszyklen auf und verschleißen relativ schnell. Falls verteilte Antennen und/oder Sensoren verwendet werden, ist die Verkabelung der Einzelkomponenten aufwendig und entsprechend mechanisch anfällig.Finally, when changing the fork tines or the fork shoes again takes a heavy load on the electrical connections. RF connectors or bolted connections often have only a limited number of connection cycles and wear out relatively quickly. If distributed antennas and / or sensors are used, the cabling of the individual components is complicated and correspondingly mechanically susceptible.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Transponderlesemodul für einen Gabelschuh, einen Gabelschuh sowie ein System aus diesen zur Verfügung zu stellen, die die oben genannten Nachteile vermeiden und mit denen auch in einer Großserienfertigung stets gleiche sowie sichere Funktionalität zu erreichen ist.The present invention has for its object to provide a transponder reading module for a fork shoe, a fork and a system of these are available, which avoid the disadvantages mentioned above and with which even in a mass production always the same and safe functionality can be achieved.
Diese Aufgabe wird durch ein Transponderlesemodul für einen Gabelschuh einer Gabelzinke eines Flurförderzeugs mit den Merkmalen des unabhängigen Patentanspruchs 1, einen Gabelschuh mit den Merkmalen des Patentanspruchs 9 sowie durch ein System aus einem Transponderlesemodul sowie einem Gabelschuh mit den Merkmalen des Patentanspruchs 12 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a transponder reading module for a fork shoe of a fork tine of a truck with the features of independent claim 1, a fork shoe with the features of claim 9 and by a system of a transponder reading module and a fork shoe with the features of
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei einem Transponderlesemodul für einen Gabelschuh einer Gabelzinke eines Flurförderzeugs mit einer Sende- und/oder Empfangseinrichtung sowie mit einer Antenne, zumindest die Antenne in ein Kunststoffgehäuse eingesetzt ist und das Transponderlesemodul über ein einziges Anschlusskabel angeschlossen werden kann.The object is achieved in that in a transponder reading module for a fork shoe of a fork tine of a truck with a transmitting and / or receiving device and an antenna, at least the antenna is inserted into a plastic housing and the transponder reading module can be connected via a single connecting cable.
Vorteilhaft ist der Kunststoffteil des Transponderlesemoduls für elektromagnetische Strahlung durchlässig und kann in seinem Hohlraum alle Komponenten integrieren. Durch diese Integration weisen die Komponenten einen ausreichenden Schutz gegenüber mechanischen Beschädigungen, Staub, Verschmutzungen und Feuchtigkeit auf, so dass beispielsweise Anforderungen an einer IP-Schutzklasse erfüllt werden können, wie sie für elektrische Komponenten definiert sind. Insbesondere ist es möglich, ein solches Transponderlesemodul als kompakte, vorgefertigte Einheit mit definierten elektromagnetischen Eigenschaften und vor allem Sendeeigenschaften der Antenne mit geringen Serienstreuungen zu produzieren. Die deutlich größeren Toleranzen bei der Fertigung des Gabelschuhs als Stahlbauteil spielen daher keine nachteilige Rolle. In der Endmontage wird das Transponderlesemodul mit dem Gabelschuh verbunden und auf übliche Art und Weise mechanisch gesichert, beispielsweise durch wenige Schrauben, ohne dass besondere Anforderungen an die Ausrichtung bei der Montage oder Einstellungsarbeiten erforderlich sind. Es ergibt sich eine kostengünstige und robuste Systemlösung, die schnell montiert werden kann. Auch sind in dem Transponderlesemodul alle Komponenten zusammengefasst. Es sind daher keine außenliegenden bzw. insgesamt nur sehr kurze und somit verlustarme Hochfrequenzleitungen im Inneren des Kunststoffgehäuses erforderlich und dase gesamte Transponderlesemodul muss nur über ein Anschlusskabel angeschlossen werden, das als Signalübertragungs- bzw. Energieversorgungskabel marktüblich in sehr robuster Ausführungsform zur Verfügung steht. Das Transponderlesemodul ist einfach auswechselbar und nimmt in seiner montierten Position in dem Gabelschuh keine Kräfte auf.Advantageously, the plastic part of the transponder reading module is permeable to electromagnetic radiation and can integrate all components in its cavity. Through this integration, the components have sufficient protection against mechanical damage, dust, dirt and moisture, so that, for example, requirements for an IP protection class can be met, as they are defined for electrical components. In particular, it is possible to use such a transponder reading module as a compact, prefabricated unit with defined electromagnetic properties and above all transmission properties of the To produce antenna with low series variations. The significantly larger tolerances in the manufacture of the fork shoe as a steel component therefore do not play a disadvantageous role. In final assembly, the transponder reading module is connected to the fork shoe and mechanically secured in the usual way, for example by a few screws, without any special requirements for alignment during assembly or adjustment work is required. The result is a cost-effective and robust system solution that can be quickly assembled. Also, all components are combined in the transponder reading module. There are therefore no external or total only very short and thus low-loss high-frequency cables inside the plastic housing required and dase entire transponder reader module must be connected only via a connection cable that is marketable in a very robust embodiment as signal transmission or power supply cable available. The transponder reading module is easily replaceable and does not absorb any forces in its mounted position in the fork shoe.
Vorteilhaft ist das Kunststoffgehäuse in ein metallisches U-Profil gesetzt.Advantageously, the plastic housing is set in a metallic U-profile.
Durch eine definierte oder teilweise Einbettung des Kunststoffgehäuses in ein Metallgehäuse, beispielsweise die hier vorgeschlagene metallische Halbumschaltung durch ein U-Profil, kann bei gleichzeitig hoher Fertigungspräzision eine große Robustheit des Transponderlesemoduls erreicht werden. Zugleich lässt sich die Antenne auf eine gewünschte Abstrahlungscharakteristik auf diesem Weg einstellen. Mit definierten Befestigungspunkten des Metallgehäuses kann auch eine weitgehende Unempfindlichkeit gegenüber Toleranzen der Fertigung des Gabelschuhs erreicht werden.By a defined or partial embedding of the plastic housing in a metal housing, for example, the proposed here metallic half-way through a U-profile, a high degree of robustness of the transponder reading module can be achieved with high manufacturing precision. At the same time, the antenna can be adjusted to a desired radiation characteristic in this way. With defined attachment points of the metal housing, a substantial insensitivity to tolerances of the production of the fork shoe can be achieved.
In das Kunststoffgehäuse können weitere Sensoren, insbesondere ein Beschleunigungssensor oder ein optischer Sensor, etwa zwei versetzte optische Sensoren zur Erzeugung eines Quadratursignals, eingesetzt sein.In the plastic housing further sensors, in particular an acceleration sensor or an optical sensor, such as two staggered optical sensors for generating a quadrature signal may be used.
Weiterhin ist es auch denkbar, zusätzliche Sensoren zur Erfassung einer aufliegenden Palette oder Last auf einer Lastgabel vorzusehen, etwa optische Sensoren, insbesondere zwei versetzte optische Sensoren zur Erzeugung eines Quadratursignals.Furthermore, it is also conceivable to provide additional sensors for detecting an overlying pallet or load on a load fork, such as optical sensors, in particular two offset optical sensors for generating a Quadrature signal.
In einer günstigen Ausgestaltung ist das Transponderlesemodul mit einer langgestreckten Form aufgebaut, bevorzugt quaderförmig.In a favorable embodiment, the transponder reading module is constructed with an elongate shape, preferably cuboid.
Dadurch kann das Transponderlesemodul leicht als Einheit in einen Gabelschuh eingesetzt werden, wenn dieser Gabelschuh an seiner Rückseite eine Öffnung mit für ein seitliches, neben der Gabelzinke angeordnetes Fach für das Transponderlesemodul aufweist. Zugleich wird eine nur geringe Verbreiterung des Gabelschuhs erforderlich.As a result, the transponder reading module can easily be used as a unit in a fork shoe, if this fork shoe has on its rear side an opening with a compartment for the transponder reading module arranged for a lateral compartment next to the fork leg. At the same time only a small broadening of the fork shoe is required.
Die Antenne kann eine Richtwirkung seitlich zur Längserstreckung des Transponderlesemoduls aufweisen.The antenna may have a directivity laterally to the longitudinal extent of the transponder reading module.
Vorteilhaft ist die Antenne zur Gabelspitze orientiert und die Sende- und/oder Empfangseinrichtung von der Gabelspitze weg angeordnet.Advantageously, the antenna is oriented to the fork tip and arranged the transmitting and / or receiving device away from the fork tip.
Die Sende- und/oder Empfangseinrichtung kann eine RFID-Sende- und/oder Empfangseinrichtung sein.The transmitting and / or receiving device may be an RFID transmitting and / or receiving device.
In einer optimierten Fertigungsaufteilung können die Transponderlesemodule als RFID-Module vorgefertigt, geprüft und an den Ort der Endmontage geliefert werden.In an optimized production division, the transponder reading modules can be prefabricated as RFID modules, tested and delivered to the place of final assembly.
In einer günstigen Ausgestaltung ist das Transponderlesemodul wasserdicht gekapselt.In a favorable embodiment, the transponder reading module is encapsulated watertight.
Dadurch ergibt sich eine optimierte Unempfindlichkeit gegenüber Staub, Verschmutzungen und Feuchtigkeit, wie sie als Belastungen an einem Gabelschuh auftreten können. Insbesondere muss nicht der Gabelschuh die Sende- und Empfangseinrichtungen einer drahtlosen Warenidentifikation oder beispielsweise eines RFID-Elements gegen solche Umwelteinflüsse schützen. An dem Gabelschuh kann einfach ein offenes Fenster vorgesehen sein, dass die Sende- und Empfangsbedingungen der Antenne nicht beeinträchtigt und das Transponderlesemodul selbst kann auf optimierte Sende- und Empfangsbedingungen optimiert sein.This results in an optimized insensitivity to dust, dirt and moisture, as they can occur as loads on a fork shoe. In particular, the fork shoe does not have to protect the transmitting and receiving devices of a wireless goods identification or, for example, an RFID element against such environmental influences. An open window may simply be provided on the fork shoe that does not affect the transmission and reception conditions of the antenna, and the transponder reading module itself may be optimized for optimized transmission and reception conditions.
Die Aufgabe wird auch gelöst durch einen Gabelschuh für einen Gabelzinken einer Lastgabel eines Flurförderzeugs, bei dem durch Abtrennelemente seitlich in der Längserstreckung des Gabelschuhs ein Aufnahmeraum für ein Transponderlesemodul wie es zuvor beschrieben wurde abgetrennt ist, wobei für den Bereich der Antenne des Transponderlesemoduls der Gabelschuhe eine seitliche Öffnung aufweist.The object is also achieved by a fork shoe for a fork of a fork of a truck, in which a receiving space for a transponder reading module as described above is separated by separating elements laterally in the longitudinal extent of the fork shoe, wherein for the range of the antenna of the transponder reading module of the fork shoes has lateral opening.
Dadurch kann ein getrennt und unter optimalen Bedingungen vorgefertigtes Transponderlesemodul mit definierten Sende- und Empfangsbedingungen bei geringer Serienstreuung hergestellt und in den Gabelschuh eingesetzt werden. Durch die Öffnung wird eine Antenne in ihren Eigenschaften nicht beeinträchtigt. Über die Öffnung kann eine ungestörte Feldkopplung der Antenne mit beispielsweise RFID-Tags stattfinden.As a result, a separate and prefabricated under optimal conditions Transponderlesemodul can be produced with defined transmission and reception conditions with low production spread and used in the fork. Through the opening, an antenna is not impaired in their properties. An undisturbed field coupling of the antenna with, for example, RFID tags can take place via the opening.
Das Transponderlesemodul kann in den Aufnahmeraum von dem Ende des Gabelschuhs her einschiebbar sein.The transponder reading module may be insertable into the receiving space from the end of the fork shoe.
Das Transportmodul kann durch eine Öffnung an der einem Gabelträger zugewandten Seite des Gabelschuhs eingeschoben und soweit vorgeschoben werden, dass die Antenne vor der Öffnung zu liegen kommt. Besonders vorteilhaft ist dies umzusetzen, wenn beispielsweise das Transponderlesemodul eine lang gestreckte Form aufweist. Zusätzlich ist es denkbar, nach dem Einsetzen die Öffnung an dem Ende des Gabelschuhs zu verschließen. Dabei kann ein Anschlusskabel des Transponderlesemoduls über diese Öffnung aus dem Gabelschuh herausgeführt werden und befindet sich auf der gesamten relevanten Länge der Gabelzinke somit in einem geschützten Inneren des Gabelschuhs.The transport module can be inserted through an opening on the side facing the fork carriage side of the fork shoe and advanced so far that the antenna comes to lie in front of the opening. This is particularly advantageous to implement, for example, if the transponder reading module has an elongated shape. In addition, it is conceivable to close the insertion at the end of the fork shoe after insertion. In this case, a connection cable of the transponder reading module can be led out of the fork shoe via this opening and is thus located on the entire relevant length of the fork prong in a protected interior of the fork shoe.
Vorteilhaft ist der Gabelschuh aus Metall gebildet, insbesondere Stahl, und das Abtrennelement besteht aus einem durchgehenden Blech.Advantageously, the fork shoe is formed of metal, in particular steel, and the separating element consists of a continuous sheet metal.
Das Transponderlesemodul wird an allen Flächen außer der Öffnung durch den Gabelschuh geschützt. Durch die innere Abtrennung des Aufnahmeraums im Sinne eines abgetrennten Fachs ist das Transponderlesemodul auch vor möglichen Beschädigungen geschützt, die bei Einführung der Gabelzinke entstehen könnten.The transponder reader module is protected on all surfaces except the opening by the fork shoe. Due to the internal separation of the receiving space in the sense of a separate compartment, the transponder reading module is also protected against possible damage that might occur when the fork is introduced.
Die Aufgabe wird auch gelöst durch ein System aus einem Transponderlesemodul sowie einem Gabelschuh, wie sie jeweils oben beschrieben sind.The object is also achieved by a system comprising a transponder reading module and a fork shoe, as described above in each case.
Das System weist die bereits zuvor genannten Vorteile auf.The system has the advantages already mentioned above.
Es können bei einem solchen System zwei Gabelschuhe sowie zwei Transponderlesemodule für zwei Gabelzinken einer Lastgabel vorgesehen sein, wobei die beiden Transponderlesemodule über ein Y-Kabel angeschlossen sind, das über eine Kodierung der Steckverbindungen oder einen Softwarealgorithmus eine Zuweisung Master/Slave festlegt.It can be provided in such a system two fork shoes and two transponder reading modules for two forks of a fork, the two transponder reading modules are connected via a Y-cable, which determines a master / slave assignment via a coding of the connectors or a software algorithm.
Zwei Transponderlesemodule können über ein Y-Kabel als Anschlusskabel effizient angeschlossen werden. Wie in dem zuvor geschilderten Ausführungsbeispiel kann in einem solchen Fall zugleich auch durch eine Kodierung der Steckverbindungen eine Zuweisung Master/Slave erfolgen. Es kann eine Anbindung an ein übergeordnetes System, eine Energieversorgung, beispielsweise auch ein Terminal-System erfolgen. Diese Anbindung kann neben einer geschilderten leitungsgebundenen auch drahtlos ausgeführt sein, eventuell kombiniert mit einer teilautarken Energieversorgung wie beispielsweise über eine Batterie. Eine solche Batterie kann in das Transponderlesemodul integriert sein, oder in den gleichen Stahlbauschacht bzw. Aufnahmeraum des Gabelschuhs.Two transponder reader modules can be efficiently connected via a Y-cable as connection cable. As in the exemplary embodiment described above, in such a case an assignment of master / slave can also take place at the same time by coding the plug connections. It can be a connection to a higher-level system, a power supply, for example, a terminal system. This connection can be performed in addition to a described wired and wireless, possibly combined with a teilautarken power supply such as a battery. Such a battery can be integrated in the transponder reading module, or in the same steel box or receiving space of the fork shoe.
Es ist denkbar, ein solches hochintegriertes, robustes und umgebungsunabhängiges Transponderlesemodul, das aus Funkelementen, Sensorik sowie Steuereinheiten besteht, auch bei anderen Anwendungsfällen als Flurförderzeugen oder Gabelschuhen einzusetzen.It is conceivable to use such a highly integrated, robust and environment-independent transponder reading module, which consists of radio elements, sensors and control units, also in other applications as industrial trucks or fork boots.
Weitere Vorteile und Einzelheiten der Erfindung werden anhand der in den schematischen Figuren dargestellten Ausführungsbeispiele näher erläutert. Hierbei zeigt
- Fig. 1
- einen Ladungsträger nach dem Stand der Technik mit Transpondern,
- Fig. 2a
- schematisch einen erfindungsgemäßen Gabelschuh in Aufsicht,
- Fig. 2b
- den Gabelschuh der
Fig. 2a mit einer Gabelzinke und einem eingesetztem Transponderlesemodul, - Fig. 2c
- den Gabelschuh der
Fig. 2a mit dem Transponderlesemodul, - Fig. 3a
- das erfindungsgemäße Transponderlesemodul in Seitenansicht,
- Fig. 3b
- das Transponderlesemodul der
Fig. 3a in Aufsicht, - Fig. 3c
- einen Querschnitt durch das Transponderlesemodul der
Fig. 3a im Bereich der Antenne und - Fig. 4
- zwei Transponderlesemodule mit einem Y-Kabel.
- Fig. 1
- a state-of-the-art charge carrier with transponders,
- Fig. 2a
- schematically a fork shoe according to the invention in supervision,
- Fig. 2b
- the fork shoe the
Fig. 2a with a fork and an inserted transponder reading module, - Fig. 2c
- the fork shoe the
Fig. 2a with the transponder reading module, - Fig. 3a
- the transponder reading module according to the invention in side view,
- Fig. 3b
- the transponder reading module the
Fig. 3a in supervision, - Fig. 3c
- a cross section through the transponder reading module of
Fig. 3a in the area of the antenna and - Fig. 4
- Two transponder reading modules with a Y-cable.
Die
Die
Die
Das Transponderlesemodul 13 kann als vorgefertigte und mit sehr geringen Serienstreuungen seine Spezifikationen erfüllendes vorgefertigtes Teil in den Gabelschuh 7 eingesetzt werden. Dadurch können stets gleich gute Werte für die Sende- und/oder Empfangsleistung der Antenne gewährleistet werden. Auch kann das Transponderlesemodul 13 als robuste Einheit ausgeführt sein, die unempfindlich gegenüber Verschmutzungen und Feuchtigkeit ist.The
Die
Die
Die
Die
Die
Claims (13)
dadurch gekennzeichnet,
dass zumindest die Antenne (14) in ein Kunststoffgehäuse (23) eingesetzt ist und das Transponderlesemodul (13) über ein einziges Anschlusskabel (17) angeschlossen werden kann.Transponder reading module for a fork shoe (7) of a fork tine (12) of a fork-lift truck with a transmitting and / or receiving device (18) and with an antenna (14),
characterized,
in that at least the antenna (14) is inserted in a plastic housing (23) and the transponder reading module (13) can be connected via a single connection cable (17).
dadurch gekennzeichnet,
dass das Kunststoffgehäuse (23) in ein metallisches U-Profil (25) gesetzt ist.Transponder reading module according to claim 1,
characterized,
that the plastic housing (23) is set in a metallic U-profile (25).
dadurch gekennzeichnet,
dass in das Kunststoffgehäuse (23) weitere Sensoren (21,20), insbesondere ein Beschleunigungssensor (20) oder ein optischer Sensor, etwa zwei versetzte optische Sensoren zur Erzeugung eines Quadratursignals, eingesetzt sind.Transponder reading module according to claim 1 or 2,
characterized,
that in the plastic housing (23) further sensors (21,20), in particular an acceleration sensor (20) or an optical sensor, such as two offset optical sensors for generating a quadrature signal, are used.
dadurch gekennzeichnet,
dass das Transponderlesemodul (13) mit einer langgestreckten Form aufgebaut ist, bevorzugt quaderförmig.Transponder reading module according to one of claims 1 to 3,
characterized,
in that the transponder reading module (13) is constructed with an elongated shape, preferably cuboidal.
dadurch gekennzeichnet,
dass die Antenne (14) eine Richtwirkung seitlich zur Längserstreckung des Transponderlesemoduls (13) aufweist.Transponder reading module according to claim 4,
characterized,
that the antenna (14) has a directivity laterally to the longitudinal extent of the transponder reader module (13).
dadurch gekennzeichnet,
dass die Antenne (14) zur Gabelspitze orientiert und die Sende- und/oder Empfangseinrichtung (18) von der Gabelspitze weg angeordnet ist.Transponder reading module according to claim 4 or 5,
characterized,
is that the antenna (14) oriented toward the tip of the fork and the transmitting and / or receiving device (18) disposed away from the fork tip.
dadurch gekennzeichnet,
dass die Sende- und/oder Empfangseinrichtung (18) eine RFID-Sende- und/oder Empfangseinrichtung ist.Transponder reading module according to one of claims 1 to 6,
characterized,
is that the transmitting and / or receiving device (18) an RFID transmitting and / or receiving device.
dadurch gekennzeichnet,
dass das Transponderlesemodul (13) wasserdicht gekapselt ist.Transponder reading module according to one of claims 1 to 7,
characterized,
that the transponder reading device (13) is watertight sealed.
dadurch gekennzeichnet,
dass durch Abtrennelemente (10) seitlich in der Längserstreckung des Gabelschuhs (7) ein Aufnahmeraum (8) für ein Transponderlesemodul (13) nach einem der vorhergehenden Ansprüche abgetrennt ist, wobei für den Bereich der Antenne (14) des Transponderlesemoduls (13) der Gabelschuh (7) eine seitliche Öffnung (11) aufweist.Fork shoe for a fork of a fork of a truck,
characterized,
in that a receiving space (8) for a transponder reading module (13) according to one of the preceding claims is separated laterally in the longitudinal extension of the fork shoe (7), wherein for the area of the antenna (14) of the transponder reading module (13) the fork shoe (7) has a lateral opening (11).
dadurch gekennzeichnet,
dass das Transponderlesemodul (13) in den Aufnahmeraum (8) von dem Ende des Gabelschuhs (7) her einschiebbar ist.Fork shoe according to claim 9,
characterized,
in that the transponder reading module (13) can be inserted into the receiving space (8) from the end of the fork shoe (7).
dadurch gekennzeichnet,
dass der Gabelschuh (7) aus Metall gebildet ist, insbesondere Stahl, und das Abtrennelement (10) aus einem durchgehenden Blech (9) besteht.The fork shoe according to claim 9 or 10,
characterized,
in that the fork shoe (7) is formed from metal, in particular steel, and the separating element (10) consists of a continuous sheet metal (9).
dadurch gekennzeichnet,
dass zwei Gabelschuhe (7) sowie zwei Transponderlesemodule (13) für zwei Gabelzinken (12) einer Lastgabel vorgesehen sind, wobei die beiden Transponderlesemodule (13) über ein Y-Kabel (28) angeschlossen sind, das über eine Kodierung der Steckverbindungen (27) eine Zuweisung Master/Slave festlegt.System according to claim 12,
characterized,
in that two fork shoes (7) as well as two transponder reading modules (13) are provided for two forks (12) of a fork, the two transponder reading modules (13) being connected via a Y-cable (28) a coding of the connectors (27) determines an assignment master / slave.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102014117339.2A DE102014117339A1 (en) | 2014-11-26 | 2014-11-26 | Transponder reading module for fork shoe |
Publications (2)
Publication Number | Publication Date |
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EP3026005A1 true EP3026005A1 (en) | 2016-06-01 |
EP3026005B1 EP3026005B1 (en) | 2021-03-31 |
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Application Number | Title | Priority Date | Filing Date |
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EP15192548.4A Active EP3026005B1 (en) | 2014-11-26 | 2015-11-02 | System of a transponder reader module for fork shoe and fork shoe |
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DE (1) | DE102014117339A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3162653A1 (en) * | 2015-10-30 | 2017-05-03 | STILL GmbH | Additional device holder for industrial truck with wheel arms |
Citations (5)
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DE4439914A1 (en) * | 1994-11-08 | 1996-05-09 | Gotthard Mueller | Identification coding for containers |
WO2006124762A2 (en) * | 2005-05-13 | 2006-11-23 | Ems Technologies, Inc. | Tine-mounted antenna for an rfid system |
EP1728757A1 (en) * | 2005-05-31 | 2006-12-06 | Still Gmbh | Industrial truck |
WO2010007621A1 (en) * | 2008-07-15 | 2010-01-21 | Carmel Container Systems Ltd | Smart logistic system with rfid reader mounted on a forklift tine |
DE102010047630A1 (en) * | 2010-09-17 | 2012-03-22 | Still Gmbh | Fork shoe used in industrial truck, has antenna that is arranged along lengthwise direction of transmitter and receiver |
-
2014
- 2014-11-26 DE DE102014117339.2A patent/DE102014117339A1/en not_active Withdrawn
-
2015
- 2015-11-02 EP EP15192548.4A patent/EP3026005B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4439914A1 (en) * | 1994-11-08 | 1996-05-09 | Gotthard Mueller | Identification coding for containers |
WO2006124762A2 (en) * | 2005-05-13 | 2006-11-23 | Ems Technologies, Inc. | Tine-mounted antenna for an rfid system |
EP1728757A1 (en) * | 2005-05-31 | 2006-12-06 | Still Gmbh | Industrial truck |
WO2010007621A1 (en) * | 2008-07-15 | 2010-01-21 | Carmel Container Systems Ltd | Smart logistic system with rfid reader mounted on a forklift tine |
DE102010047630A1 (en) * | 2010-09-17 | 2012-03-22 | Still Gmbh | Fork shoe used in industrial truck, has antenna that is arranged along lengthwise direction of transmitter and receiver |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3162653A1 (en) * | 2015-10-30 | 2017-05-03 | STILL GmbH | Additional device holder for industrial truck with wheel arms |
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EP3026005B1 (en) | 2021-03-31 |
DE102014117339A1 (en) | 2016-06-02 |
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