EP2562128A1 - Chariot de manutention doté dýun système de mesure optique de la hauteur de levage - Google Patents
Chariot de manutention doté dýun système de mesure optique de la hauteur de levage Download PDFInfo
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- EP2562128A1 EP2562128A1 EP12178422A EP12178422A EP2562128A1 EP 2562128 A1 EP2562128 A1 EP 2562128A1 EP 12178422 A EP12178422 A EP 12178422A EP 12178422 A EP12178422 A EP 12178422A EP 2562128 A1 EP2562128 A1 EP 2562128A1
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- truck according
- light emitter
- measuring
- mast
- receiving element
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- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 238000011109 contamination Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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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
- B66F9/0755—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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
Definitions
- the invention relates to an industrial truck with an optical Hubtownnmesssystem.
- the invention relates to a truck with a mast and a height-movably arranged on the mast lifting device, wherein a Hubtownnmesssystem comprises at least two measuring elements in the form of a light emitter and a receiving element.
- optical sensors in the form of laser distance sensors that perform a height measurement absolutely and can be well integrated in the range of a mast in an industrial truck by small size.
- these laser distance sensors direct a laser beam onto a reflector and a reception sensor is arranged so that it moves relative to the laser distance sensor is not moved, but only the reflector, in addition no passage of lines through the mast is required.
- a laser distance sensor for a lift height measurement for example with a laser sensor pointing down a laser beam at a suitable reflective target
- a laser distance sensor for example with a laser sensor pointing down a laser beam at a suitable reflective target
- the use of a laser distance sensor for a lift height measurement can lead to failure of the lift height measurement due to contamination of the optics of the laser, a receiver sensor or the reflective target ,
- contamination of the optics of the laser, a receiver sensor or the reflective target Especially when using the truck in the open air, there is an increased pollution and at low temperatures such as in winter, but also when used in cold stores, to ice formation. If ice forms over the optics, this can lead to unwanted scattering effects and, if the ice thickness is adequate, to an interruption of the light beam.
- a device for non-contact detection of the lifting height in which a transmitting device emits a wave-shaped signal, in particular an electromagnetic wave, to a separately arranged receiving device, wherein the transmitting and receiving device are arranged in relation to each other during lifting movements of the mast moving components.
- a method for detecting the height position of a height-lifting load-receiving means of a truck is known.
- an image of a relative to a receiving device movable target object is detected by the receiving device and from the change of the image, the position of the lifting device is determined.
- the present invention has for its object to provide an industrial truck with a Hubtownnmesssystem available that avoids the disadvantages mentioned and is insensitive to contamination and ice formation. This object is achieved by an industrial truck having the features of patent claim 1. Advantageous developments are specified in the subclaims.
- a Hubtownnmesssystems comprises at least two measuring elements in the form of a light emitter and a receiving element, and wherein at least one measuring element has a nano-coated surface on the surface of an optical system or before Optics, in particular a surface with lotus effect has.
- the measuring element with nano-coated surface is advantageously arranged at the bottom on a measuring arrangement, in particular a measuring section, with optics pointing upwards.
- Measuring elements located at the upper end of the vertical measuring section are aligned with their optics downwards and therefore they are usually subject to so much contamination or ice formation.
- the invention is particularly advantageous especially for below arranged measuring elements.
- the surface is inclined relative to the horizontal.
- the surface is part of a housing provided with an optical window for the one or more measuring elements.
- a reflection element and the light signal can be deflected at least once.
- the receiving element and the light emitter are arranged in the lower region of the mast and a light beam is directed to a reflection element in the upper part of the mast ,
- the reflection element can also be arranged below.
- the reflection element may have a nano-coated surface and have the further described features of a measuring element.
- the receiving element may be a camera and the light emitter may be a lighting device for a target object detected by the camera.
- the light emitter is a laser.
- the light emitter can be an LED.
- LEDs are particularly compact and small in their design.
- lasers can be realized with LEDs and, on the other hand, it is possible to implement optics at the same time by virtue of the plastic housing in which the LED is embedded in many embodiments. Therefore, it is also conceivable to form the nano-coated surface on the LED itself.
- the light emitter and the receiving element form a structural unit, which can be designed to be particularly compact, and in particular has a common optical window for emitting the light and for receiving the reflected light component
- a cleaning device for the surface is provided, in particular a cleaning device with spray water and / or compressed air.
- the beam-forming optics and / or the receiving element to a heating.
- the Fig. 1 shows an inventive truck 2, in the present example, a counterbalance forklift 1, in a side view.
- the counterbalance forklift 1 comprises a driver's workplace 7 in a middle section of a vehicle body 6 formed by a frame 3, a counterweight 4 and a driver's safety roof 5, and inside the driver's safety roof 5.
- an aggregate space is formed in which the components of the drive system of the forklift 1 are located.
- an internal combustion engine drive system an internal combustion engine and the components of a traction drive and a working hydraulics driven by the internal combustion engine can be arranged below the driver's workplace 7.
- a battery-electric drive system a battery compartment for receiving a trained example as a battery pack power supply device is formed below the driver's workplace 7, with the traction drive and the working hydraulics are supplied with electrical energy.
- Fig. 1 are further shown in the front region of the counterbalance forklift 1 wheels, which are designed as drive wheels 8, and in the rear-side area provided with steered wheels 9 steering axle 10th
- a mast 11 is arranged, on which a load bearing device 12 designed as a load fork 13 is guided to be raised and lowered.
- the mast 11 includes a stationary mast 14, which is formed by two laterally arranged in the vehicle transverse direction vertical mast profiles.
- the stand mast 14 is arranged by means of a tilt drive 15, which is formed by tilting cylinders 16, adjustable in inclination on the vehicle body 6.
- the mast 11 is designed as a multi-mast, which has one or more guided in the stationary mast 14 and upwardly extendable extension masts 24, 25, in which the load receiving means 13 is guided in height adjustable on a lifting carriage 26.
- the mast 11 is arranged in the vehicle transverse direction between the drive wheels 8.
- a reflection element 18 is arranged, which is arranged by a on the stationary mast or the truck 2 and in the representation of Fig. 1 unrecognizable laser sensor is illuminated.
- the reflected laser light is detected by a receiving element connected to the laser sensor.
- the Fig. 2 schematically shows the mast 11 of the truck 2 of Fig. 1 ,
- the mast 11 has the stationary mast 14, on which the first Ausfahrmast 24 and the second Ausfahrmast 25 are pushed out upward, and the lifting carriage 26 with the fork 12 as a load-carrying means 13.
- the laser 37 as a light emitter 34 and a receiving element 35 include.
- the laser 37 has an expanding optics consisting of a scattering lens, which widens the laser beam to a laser beam cone 38 as a widened light beam 36.
- the laser beam cone 38 is directed vertically upwards on a reflection element 18, which is attached to the lifting carriage 26 and is a retroreflecting surface 39, which reflects light rays in a certain angular range independent of the angle of incidence on itself.
- the opening angle of the laser beam cone 38 is selected so that the reflection element 18 is in normal operation possible maximum deflection of the mast 11, for example by driving movements or an overlying load, is still within the laser beam cone 38, while the stroke of the mast 11 is maximum ,
- the Fig. 3 shows the measuring elements 33 from the Fig. 2 schematically in detail.
- the laser 37 as a light emitter 34 is one of the two measuring elements 33 and transmits one Light beam 36 as a laser beam cone 38 from.
- the receiving element 35 is arranged, which is a second measuring element 33, and, as indicated by the arrow, receives the light reflected back through the reflection element 18.
- a transparent nano-coated surface 41 is inclined relative to the horizontal.
- the surface 41 also has a heating, which additionally prevents ice formation.
Abstract
Description
Die Erfindung betrifft ein Flurförderzeug mit einem optischen Hubhöhenmesssystem. Insbesondere betrifft die Erfindung ein Flurförderzeug mit einem Hubgerüst und einem an dem Hubgerüst höhenbeweglich angeordneten Lastaufnahmemittel, wobei ein Hubhöhenmesssystem zumindest zwei Messelemente in Form eines Lichtemitters und eines Empfangselements umfasst.The invention relates to an industrial truck with an optical Hubhöhenmesssystem. In particular, the invention relates to a truck with a mast and a height-movably arranged on the mast lifting device, wherein a Hubhöhenmesssystem comprises at least two measuring elements in the form of a light emitter and a receiving element.
Bei Flurförderzeugen mit einem Hubmast bzw. Hubgerüst, an dem eine Lastaufnahmevorrichtung, im häufigsten Fall eine Lastgabel, höhenbeweglich zum Transport der Last geführt ist, sind verschiedene Hubhöhenmesssysteme bekannt, mit denen erfasst werden kann, um welchen Wert die Lastaufnahmevorrichtung des Flurförderzeugs angehoben wurden. So werden z.B. Seilzugsensoren verwendet, mit denen die durch Anheben der Lastaufnahmevorrichtung von einer Seilrolle abgerollte Länge eines Seiles erfasst werden kann. Andere Systeme nutzen ein Seil, das senkrecht gespannt und um eine Messrolle geschlungen ist, so dass bei einem Anheben der Lastaufnahmevorrichtung diese Messrolle nach oben bewegt sowie durch die Seilumschlingung in Drehung versetzt wird. Durch Aufnehmen der Drehbewegung lässt sich auf die Höhe der Lastaufnahmevorrichtung schließen.In trucks with a mast or mast to which a load handling device, in the most common case a fork, is vertically movable to transport the load, various Hubhöhenmesssysteme are known, which can be detected by which value the load handling device of the truck have been raised. Thus, e.g. Cable draw sensors used with which the unwound by lifting the load bearing device of a pulley length of a rope can be detected. Other systems use a rope, which is stretched vertically and wound around a measuring roller, so that when lifting the load receiving device, this measuring roller moves upwards and is rotated by the cable loop in rotation. By recording the rotational movement can close to the height of the load bearing device.
Problematisch an diesen Lösungen ist, dass die verwendeten Seile oft reißen, da sie mechanischem Verschleiß und durch die Wechselbeanspruchung einer Materialermüdung unterliegen, oder an Gegenständen, wie zum Beispiel Regalen, Lasten, etc., hängen bleiben können. Auch kann es zu viele Funktionen kommen, wenn diese Systeme im Freien eingesetzt werden und es bei tiefen Temperaturen zu Eisbildung kommt.The problem with these solutions is that the ropes used often tear because they are subject to mechanical wear and the stress of material fatigue, or to objects, such as shelves, loads, etc., can get stuck. Also, too many functions can occur when these systems are used outdoors and ice formation occurs at low temperatures.
Bekannt ist nach dem Stand der Technik die Verwendung optischer Sensoren in Form von Laserdistanzsensoren, die eine Höhenmessung absolut durchführen und sich durch geringe Baugröße gut in dem Bereich eines Hubgerüstes in ein Flurförderzeug integrieren lassen. Soweit diese Laserdistanzsensoren einen Laserstrahl auf einen Reflektor richten und ein Empfangssensor so angeordnet ist, dass er sich relativ zu dem Laserdistanzsensor nicht bewegt, sondern lediglich der Reflektor, ist zusätzlich keine Durchführung von Leitungen durch das Hubgerüst erforderlich.It is known in the prior art, the use of optical sensors in the form of laser distance sensors that perform a height measurement absolutely and can be well integrated in the range of a mast in an industrial truck by small size. Insofar as these laser distance sensors direct a laser beam onto a reflector and a reception sensor is arranged so that it moves relative to the laser distance sensor is not moved, but only the reflector, in addition no passage of lines through the mast is required.
Bei der Verwendung eines Laserdistanzsensors für eine Hubhöhenmessung, beispielsweise mit einem Lasersensor unten, der einen Laserstrahl nach oben auf ein geeignetes reflektierendes Ziel richtet, kann es jedoch durch Verschmutzungen der Optik des Lasers bzw. eines Empfangssensors oder des reflektierenden Ziels zu einem Ausfall der Hubhöhenmessung kommen. Vor allem bei einem Einsatz des Flurförderzeugs auch unter freiem Himmel kommt es zu einer verstärkten Verschmutzung und bei tiefen Temperaturen wie im Winter, aber auch bei einem Einsatz in Kühlhäusern, zu einer Eisbildung. Wenn sich über der Optik Eis bildet, kann dies zu ungewollten Streueffekten und bei entsprechender Eisstärke auch zu einer Unterbrechung des Lichtstrahls führen.However, the use of a laser distance sensor for a lift height measurement, for example with a laser sensor pointing down a laser beam at a suitable reflective target, can lead to failure of the lift height measurement due to contamination of the optics of the laser, a receiver sensor or the reflective target , Especially when using the truck in the open air, there is an increased pollution and at low temperatures such as in winter, but also when used in cold stores, to ice formation. If ice forms over the optics, this can lead to unwanted scattering effects and, if the ice thickness is adequate, to an interruption of the light beam.
Aus der
Aus der
Nachteilig an dem in diesen Druckschriften genannten Stand der Technik ist, dass dieser keine Lösung für das Problem der Verschmutzung bietet.A disadvantage of the prior art mentioned in these documents is that it offers no solution to the problem of contamination.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Flurförderzeug mit einem Hubhöhenmesssystem zur Verfügung zu stellen, das die genannten Nachteile vermeidet und unempfindlich gegenüber Verschmutzungen und Eisbildung ist. Diese Aufgabe wird durch ein Flurförderzeug mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.The present invention has for its object to provide an industrial truck with a Hubhöhenmesssystem available that avoids the disadvantages mentioned and is insensitive to contamination and ice formation. This object is achieved by an industrial truck having the features of patent claim 1. Advantageous developments are specified in the subclaims.
Die Aufgabe wird durch ein Flurförderzeug mit einem Hubgerüst und einem an dem Hubgerüst höhenbeweglich angeordneten Lastaufnahmemittel gelöst, wobei ein Hubhöhenmesssystem zumindest zwei Messelemente in Form eines Lichtemitters und eines Empfangselements umfasst, und wobei mindestens ein Messelement eine nanobeschichtete Oberfläche an der Oberfläche einer Optik oder vor der Optik, insbesondere eine Oberfläche mit Lotuseffekt, aufweist.The object is achieved by an industrial truck with a mast and a lifting support arranged vertically movable load receiving means, wherein a Hubhöhenmesssystems comprises at least two measuring elements in the form of a light emitter and a receiving element, and wherein at least one measuring element has a nano-coated surface on the surface of an optical system or before Optics, in particular a surface with lotus effect has.
Dadurch kann ein Anhaften von Schmutz vorteilhaft vermieden werden. Insbesondere kann aber auch bei Flurförderzeugen, vor allem Gegengewichtsgabelstaplern, die im Freien eingesetzt werden, eine Benetzung mit Wasser und im Winter eventuell eine Eisbildung verhindert werden. Auf einer nanobeschichteten Oberfläche können Schmutzpartikel, aber auch Eis keine feste Verbindung mit der Oberfläche eingehen. Bereits durch Vibration und Erschütterungen im Betrieb des Flurförderzeugs lösen sich daher Eis und Schmutzpartikel wieder. Das Messprinzip solcher Hubhöhenmesssysteme besteht darin, dass die hubhöhenabhängige Distanzänderung einer optischen Wegstrecke zwischen Lichtemitter und Empfangselement sich ändert. Bei einer Distanzmessung wird beispielsweise erfasst, in wieweit eine zwischen Lichtemitter und Empfangselement liegende Messstrecke sich in Abhängigkeit von der Hubhöhe ändert. Alternativ kann auch die Änderung der optischen Wegstrecke mittels anderer Verfahren bestimmt werden, etwa durch Änderungen erfasster Bildmuster.As a result, adhesion of dirt can be advantageously avoided. In particular, however, can also with industrial trucks, especially counterbalance forklifts, which are used outdoors, wetting with water and in the winter may be prevented from forming ice. On a nano-coated surface, dirt particles, but also ice, can not form a firm bond with the surface. As a result of vibration and vibration during operation of the truck, ice and dirt particles are released again. The measuring principle of such Hubhöhenmesssysteme is that the hub height-dependent distance change of an optical path between light emitter and receiving element changes. In the case of a distance measurement, it is detected, for example, to what extent a measuring path lying between the light emitter and the receiving element changes as a function of the lifting height. Alternatively, the change in the optical path can be determined by other methods, such as changes in detected image pattern.
Vorteilhaft ist das Messelement mit nanobeschichteter Oberfläche unten an einer Messanordnung, insbesondere einer Messstrecke, mit nach oben gerichteter Optik angeordnet.The measuring element with nano-coated surface is advantageously arranged at the bottom on a measuring arrangement, in particular a measuring section, with optics pointing upwards.
Messeelemente, die sich am oberen Ende der senkrechten Messstrecke befinden, sind mit ihrer Optik nach unten ausgerichtet und daher unterliegen diese im Regelfall keiner so starken Verschmutzung oder Eisbildung. Es ist jedoch möglich, völlig unabhängig von der Gestaltung der unten liegenden Messerelemente auch solche oben angeordneten Messelemente mit allen hier beschriebenen Merkmalen der nanobeschichteten Oberfläche zu versehen. Besonders vorteilhaft ist die Erfindung jedoch insbesondere für unten angeordnete Messelemente.Measuring elements located at the upper end of the vertical measuring section are aligned with their optics downwards and therefore they are usually subject to so much contamination or ice formation. However, it is possible to provide such measuring elements arranged at the top with all the features of the nano-coated surface described here, completely independently of the design of the lower knife elements. However, the invention is particularly advantageous especially for below arranged measuring elements.
In einer vorteilhaften Weiterbildung der Erfindung ist die Oberfläche gegenüber der Horizontalen geneigt angeordnet.In an advantageous embodiment of the invention, the surface is inclined relative to the horizontal.
Zusammen mit dem zuvor beschriebenen Lotuseffekt führt dies dazu, dass Wasser stets abperlt und dabei auch Staub mit sich nimmt. Bei Flurförderzeugen, die auch im Freien eingesetzt werden, führt somit bereits Regenfall zu einer regelmäßigen Reinigung des Systems, da Schmutzpartikel auf der nanobeschichteten Oberfläche nicht haften und durch Wassertropfen leicht mitgenommen werden. Auch Schneeflocken haben eine verringerte Haftung und rutschen leicht ab, so dass die Oberfläche stets frei bleibt. Da Wassertropfen nicht haften, kann es auch kaum zu einer Eisbildung kommen.Together with the lotus effect described above, this causes water to always bead off and also to carry dust along with it. In the case of industrial trucks, which are also used outdoors, rainfall already leads to regular cleaning of the system, since dirt particles do not adhere to the nano-coated surface and are easily taken along by water droplets. Even snowflakes have a reduced adhesion and slip off easily, so that the surface always remains free. Since water drops do not stick, it can hardly come to an ice formation.
In einer günstigen Ausführungsform ist die Oberfläche Teil eines mit einem optischen Fenster versehenen Gehäuses für das oder die Messelemente.In a favorable embodiment, the surface is part of a housing provided with an optical window for the one or more measuring elements.
Dies ermöglicht eine größere Flexibilität, da in ein solches Gehäuse sehr unterschiedliche Sensoren oder Sensorsysteme als Messelemente eingesetzt werden können. Auch kann ein Ersatz der nanobeschichteten Oberfläche im Reparaturfall vollständig getrennt von den Messelementen erfolgen.This allows greater flexibility, since in such a housing very different sensors or sensor systems can be used as measuring elements. Also, a replacement of the nano-coated surface in case of repair completely separated from the measuring elements.
Zwischen Lichtemitter und Empfangselement kann als weiteres Messeelement ein Reflexionselement angeordnet sein und das Lichtsignal kann mindestens einmal umgelenkt werden.Between light emitter and receiving element can be arranged as a further measuring element, a reflection element and the light signal can be deflected at least once.
Dies ermöglicht einen Aufbau des Hubhöhenmesssystems, bei dem keine Anschlussleitungen in dem Hubgerüst verlegt werden müssen, sondern beispielsweise das Empfangselement und der Lichtemitter, insbesondere ein Laser, im unteren Bereich des Hubgerüstes angeordnet sind und ein Lichtstrahl auf ein Reflexionselement im oberen Teil des Hubgerüstes gerichtet ist. Selbst verständlich kann das Reflexionselement jedoch auch unten angeordnet werden. Auch das Reflexionselement kann eine nanobeschichtete Oberfläche aufweisen und die weiteren beschriebenen Merkmale eines Messeelements aufweisen.This allows a structure of the Hubhöhenmesssystems, in which no connection cables must be installed in the mast, but for example, the receiving element and the light emitter, in particular a laser, are arranged in the lower region of the mast and a light beam is directed to a reflection element in the upper part of the mast , Of course, the reflection element can also be arranged below. Also, the reflection element may have a nano-coated surface and have the further described features of a measuring element.
Das Empfangselement kann eine Kamera und der Lichtemitter eine Beleuchtungsvorrichtung für ein von der Kamera erfasstes Zielobjekt sein.The receiving element may be a camera and the light emitter may be a lighting device for a target object detected by the camera.
Vorteilhaft ist der Lichtemitter ein Laser.Advantageously, the light emitter is a laser.
Der Lichtemitter kann eine LED sein.The light emitter can be an LED.
Vorteilhafterweise sind LED besonders kompakt und klein in ihrer Bauform. Mit LED können zum einen Laser verwirklicht werden und zum anderen ist es möglich, durch das Kunststoffgehäuse, in das die LED in vielen Ausführungsformen eingebettet ist, zugleich eine Optik umzusetzen. Daher ist auch denkbar, die nanobeschichtete Oberfläche an der LED selbst auszubilden.Advantageously, LEDs are particularly compact and small in their design. On the one hand, lasers can be realized with LEDs and, on the other hand, it is possible to implement optics at the same time by virtue of the plastic housing in which the LED is embedded in many embodiments. Therefore, it is also conceivable to form the nano-coated surface on the LED itself.
In einer günstigen Weiterbildung sind der Lichtemitter und das Empfangselement mit einer gemeinsamen Oberfläche unten angeordnet.In a favorable development of the light emitter and the receiving element are arranged with a common surface below.
Vorteilhaft bilden der Lichtemitter und das Empfangselement eine bauliche Einheit, die besonders kompakt gestaltet werden kann, und die insbesondere ein gemeinsames optisches Fenster zum Aussenden des Lichts und zum Empfang des reflektierten Lichtanteils aufweistAdvantageously, the light emitter and the receiving element form a structural unit, which can be designed to be particularly compact, and in particular has a common optical window for emitting the light and for receiving the reflected light component
Vorteilhaft ist eine Reinigungsvorrichtung für die Oberfläche vorgesehen, insbesondere eine Reinigungsvorrichtung mit Spritzwasser und/oder Pressluft.Advantageously, a cleaning device for the surface is provided, in particular a cleaning device with spray water and / or compressed air.
Vor allem in Umgebungen mit einer hohen Belastung durch Staub und Schmutz kann dadurch die Funktionssicherheit gewährleistet werden. Zusammen mit der nanobeschichteten Oberfläche ergibt sich eine optimierte Reinigungswirkung.Especially in environments with a high load of dust and dirt, the functional reliability can be ensured. Together with the nano-coated surface results in an optimized cleaning effect.
Vorteilhaft weisen die strahlbildende Optik und/oder das Empfangselement eine Beheizung auf.Advantageously, the beam-forming optics and / or the receiving element to a heating.
Dadurch kann bei Minustemperaturen eine Eisbildung und somit ein Ausfall des Hubhöhenmesssystems verhindert werden. Es wird ein zuverlässiger Einsatz auch im Winter im Freien und in Kühlhäusern ermöglicht.As a result, ice formation and thus failure of the Hubhöhenmesssystems be prevented at minus temperatures. It is also possible to use it reliably outdoors in winter and in cold stores.
Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in den schematischen Figuren dargestellten Ausführungsbeispiels näher erläutert. Hierbei zeigt
- Fig. 1
- ein erfindungsgemäßes Flurförderzeug in einer Seitenansicht,
- Fig. 2
- schematisch das Hubgerüst des Flurförderzeugs der
Fig. 1 und - Fig. 3
- die Messeelemente aus der
Fig. 2 schematisch im Detail.
- Fig. 1
- an inventive truck in a side view,
- Fig. 2
- schematically the mast of the truck
Fig. 1 and - Fig. 3
- the exhibition elements from the
Fig. 2 schematically in detail.
Die
Unterhalb des Fahrerarbeitsplatzes 7 ist ein Aggregateraum ausgebildet, in dem sich die Komponenten des Antriebssystems des Gabelstaplers 1 befinden. Bei einem verbrennungs-motorischen Antriebssystem können unterhalb des Fahrerarbeitsplatzes 7 ein Verbrennungsmotor und die von dem Verbrennungsmotor angetriebenen Komponenten eines Fahrantriebs und einer Arbeitshydraulk angeordnet sein. Bei einem batterie-elektrischen Antriebssystem ist unterhalb des Fahrerarbeitsplatzes 7 ein Batteriefach zur Aufnahme einer beispielsweise als Batterieblock ausgebildeten Energieversorgungseinrichtung ausgebildet, mit der der Fahrantrieb und die Arbeitshydraulik mit elektrischer Energie versorgt werden.Below the driver's
In der
An der Vorderseite des Gabelstaplers 1 ist ein Hubgerüst 11 angeordnet, an dem ein als Lastgabel 12 ausgebildetes Lastaufnahmemittel 13 anhebbar und absenkbar geführt ist.At the front of the forklift 1, a
Das Hubgerüst 11 umfasst einen Standmast 14, der von zwei seitlich, in Fahrzeugquerrichtung beabstandet angeordneten vertikalen Hubgerüstprofilen gebildet ist. Der Standmast 14 ist mittels eines Neigeantriebs 15, der von Neigezylindern 16 gebildet ist, in der Neigung verstellbar am Fahrzeugaufbau 6 angeordnet.The
Das Hubgerüst 11 ist als Mehrfach-Hubgerüst ausgebildet, das ein oder mehrere in dem Standmast 14 geführte und nach oben ausfahrbare Ausfahrmaste 24, 25 aufweist, in denen das Lastaufnahmemittel 13 an einem Hubschlitten 26 höhenverstellbar geführt ist. Das Hubgerüst 11 ist in Fahrzeugquerrichtung zwischen den Antriebsrädern 8 angeordnet.The
An der Lastgabel 12 bzw. dem Hubschlitten 26 ist ein Reflexionselement 18 angeordnet, das von einem an dem Standmast oder dem Flurförderzeug 2 angeordneten und in der Darstellung der
Die
Die
Dadurch können Schmutzpartikel auf der nanobeschichteten Oberfläche 41 nicht anhaften und wenn Wasser einer nicht dargestellten Reinigungsvorrichtung auf die Oberfläche 41 gespritzt wird, so werden Schmutzpartikel leicht abgespült. Ebenso erfolgt ein Reinigungseffekt bei Regen und kann Eis nur schwer an der Oberfläche 41 anhaften. Die Oberfläche 41 weist darüber hinaus noch eine Beheizung auf, die eine Eisbildung zusätzlich verhindert.As a result, dirt particles can not adhere to the nano-coated
Claims (11)
wobei ein Hubhöhenmesssystem zumindest zwei Messelemente (33) in Form eines Lichtemitters (34) und eines Empfangselements (35) umfasst,
dadurch gekennzeichnet,
dass mindestens ein Messelement (33) eine nanobeschichtete Oberfläche (41) an der Oberfläche einer Optik oder vor der Optik, insbesondere eine Oberfläche mit Lotuseffekt, aufweist.Truck with a mast (11) and on the mast (11) arranged vertically movable load-receiving means (13),
wherein a lifting height measuring system comprises at least two measuring elements (33) in the form of a light emitter (34) and a receiving element (35),
characterized,
in that at least one measuring element (33) has a nano-coated surface (41) on the surface of an optical system or in front of the optical system, in particular a surface with lotus effect.
dadurch gekennzeichnet,
dass das Messelement (33) mit nanobeschichteter Oberfläche (41) unten an einer Messanordnung, insbesondere einer Messstrecke, mit nach oben gerichteter Optik angeordnet ist.Truck according to claim 1,
characterized,
in that the measuring element (33) with a nano-coated surface (41) is arranged at the bottom on a measuring arrangement, in particular a measuring section, with optics pointing upwards.
dadurch gekennzeichnet,
dass die Oberfläche (41) gegenüber der Horizontalen geneigt angeordnet ist.Truck according to claim 1 or 2,
characterized,
that the surface (41) relative to the horizontal is arranged inclined.
dadurch gekennzeichnet,
dass die Oberfläche (41) Teil eines mit einem optischen Fenster versehenen Gehäuses (40) für eines oder mehrere Messelemente (33) ist.Truck according to one of claims 1 to 3,
characterized,
that the surface (41) is part of a window provided with an optical housing (40) for one or more measuring elements (33).
dadurch gekennzeichnet,
dass zwischen Lichtemitter (34) und Empfangselement (35) als weiteres Messeelement ein Reflexionselement (18) angeordnet ist und das Lichtsignal mindestens einmal umgelenkt wird.Truck according to one of claims 1 to 4,
characterized,
that between the light emitter (34) and receiving element (35) is arranged as a further fair element a reflection element (18) and the light signal is at least once deflected.
dadurch gekennzeichnet,
dass das Empfangselement eine Kamera und der Lichtemitter eine Beleuchtungsvorrichtung für ein von der Kamera erfasstes Zielobjekt ist.Truck according to one of claims 1 to 5,
characterized,
in that the receiving element is a camera and the light emitter is a lighting device for a target object detected by the camera.
dadurch gekennzeichnet,
dass der Lichtemitter (34) ein Laser (37) ist.Truck according to one of claims 1 to 5,
characterized,
that the light emitter (34) is a laser (37).
dadurch gekennzeichnet,
dass der Lichtemitter eine LED ist.Truck according to one of claims 1 to 5,
characterized,
that the light emitter is an LED.
dadurch gekennzeichnet,
dass der Lichtemitter (34) und das Empfangselement (35) mit einer gemeinsamen Oberfläche (41) unten angeordnet sind.Truck according to one of claims 1 to 8,
characterized,
in that the light emitter (34) and the receiving element (35) are arranged with a common surface (41) at the bottom.
dadurch gekennzeichnet,
dass eine Reinigungsvorrichtung für die Oberfläche vorgesehen ist, insbesondere eine Reinigungsvorrichtung mit Spritzwasser und/oder Pressluft.Truck according to one of claims 1 to 9,
characterized,
that a cleaning device is provided for the surface, in particular a cleaning device with spray water and / or compressed air.
dadurch gekennzeichnet,
dass die Oberfläche eine Beheizung aufweist.Truck according to one of claims 1 to 10,
characterized,
that the surface has a heating.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011110828 | 2011-08-23 | ||
DE201110054894 DE102011054894A1 (en) | 2011-08-23 | 2011-10-28 | Industrial truck with optical lifting height measuring system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2562128A1 true EP2562128A1 (en) | 2013-02-27 |
EP2562128B1 EP2562128B1 (en) | 2014-04-16 |
Family
ID=46614329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120178422 Active EP2562128B1 (en) | 2011-08-23 | 2012-07-30 | Chariot de manutention doté d'un système de mesure optique de la hauteur de levage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2562128B1 (en) |
DE (1) | DE102011054894A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2923990A1 (en) * | 2014-03-28 | 2015-09-30 | Konecranes Plc | Optical measurement device, load handling apparatus, method for protecting optical measurement device and method for updating load handling apparatus |
DE102017124856A1 (en) | 2017-10-24 | 2019-04-25 | Still Gmbh | Truck with lifting height measuring system |
CN111174718A (en) * | 2020-01-09 | 2020-05-19 | 徐工消防安全装备有限公司 | Deflection measuring device and method and scissor truck |
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GB1470401A (en) * | 1973-02-21 | 1977-04-14 | Jungheinrich & Co Maschf | Mobile stacker |
EP1886966A2 (en) | 2006-08-11 | 2008-02-13 | Still Gmbh | Floor conveyor comprising a liftable device for picking up loads |
GB2459349A (en) * | 2008-04-22 | 2009-10-28 | Linde Material Handling Gmbh | Contactless detection of the height of a load pickup means |
-
2011
- 2011-10-28 DE DE201110054894 patent/DE102011054894A1/en not_active Withdrawn
-
2012
- 2012-07-30 EP EP20120178422 patent/EP2562128B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1470401A (en) * | 1973-02-21 | 1977-04-14 | Jungheinrich & Co Maschf | Mobile stacker |
EP1886966A2 (en) | 2006-08-11 | 2008-02-13 | Still Gmbh | Floor conveyor comprising a liftable device for picking up loads |
GB2459349A (en) * | 2008-04-22 | 2009-10-28 | Linde Material Handling Gmbh | Contactless detection of the height of a load pickup means |
DE102008020170A1 (en) | 2008-04-22 | 2009-11-05 | Linde Material Handling Gmbh | Method and device for non-contact detection of the position of a height-adjustable lifting device of an industrial truck |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2923990A1 (en) * | 2014-03-28 | 2015-09-30 | Konecranes Plc | Optical measurement device, load handling apparatus, method for protecting optical measurement device and method for updating load handling apparatus |
WO2015144809A1 (en) * | 2014-03-28 | 2015-10-01 | Konecranes Plc | Optical measurement device, load handling apparatus, method for protecting optical measurement device and method for updating load handling apparatus |
US10246309B2 (en) | 2014-03-28 | 2019-04-02 | Konecranes Global Corporation | Optical measurement device, load handling apparatus, method for protecting optical measurement device and method for updating load handling apparatus |
DE102017124856A1 (en) | 2017-10-24 | 2019-04-25 | Still Gmbh | Truck with lifting height measuring system |
CN111174718A (en) * | 2020-01-09 | 2020-05-19 | 徐工消防安全装备有限公司 | Deflection measuring device and method and scissor truck |
CN111174718B (en) * | 2020-01-09 | 2021-10-01 | 徐工消防安全装备有限公司 | Deflection measuring device and method and scissor truck |
Also Published As
Publication number | Publication date |
---|---|
DE102011054894A1 (en) | 2013-02-28 |
EP2562128B1 (en) | 2014-04-16 |
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