EP2540657B1 - Industrial truck with safety device - Google Patents
Industrial truck with safety device Download PDFInfo
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- EP2540657B1 EP2540657B1 EP20120169065 EP12169065A EP2540657B1 EP 2540657 B1 EP2540657 B1 EP 2540657B1 EP 20120169065 EP20120169065 EP 20120169065 EP 12169065 A EP12169065 A EP 12169065A EP 2540657 B1 EP2540657 B1 EP 2540657B1
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- European Patent Office
- Prior art keywords
- driver
- switching element
- industrial truck
- truck according
- seat
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- 230000001133 acceleration Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000002085 persistent effect Effects 0.000 claims 1
- 230000002441 reversible effect Effects 0.000 description 25
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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
- B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
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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
- 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
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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
- B66F9/07545—Overhead guards
Definitions
- the invention relates to an industrial truck, for example a counterbalance forklift.
- the invention relates to an industrial truck with a switching element arranged behind a driver's seat for operating functions of the industrial truck, wherein the switching element is located in a grip area of a person located on the driver's seat with laterally turned upper body.
- JP 2002 316795 A is a truck with a handle for the driver's hand for support known when the upper body is turned backwards. Furthermore, a turn signal switch and a horn are arranged so that the driver can operate them by hand on the handle.
- the object of the present invention is to provide an industrial truck, in particular a counterbalanced forklift, in which a correct and correct operation by a driver during a reverse drive is achieved.
- This object is achieved in that in an industrial truck, in particular a counterbalance forklift, arranged with a behind a driver's compartment switching element for operating functions of the truck, wherein the switching element is located in a grip area of a person located on the driver's seat with laterally rotated upper body, when the shift element is actuated, the entire speed range for reverse travel and when the shift element is not actuated, a restricted speed range for reversing is available.
- the switching element thus has the function of a deadman switch, which allows only when actuated the regular operation of the truck during a reverse drive with the entire speed range with the normal unreduced maximum speed for reversing. If the shift element is not actuated during a reverse drive, only a limited speed range with a significantly reduced maximum speed for the reverse drive is available for a reverse drive. It will be advantageous Driver thereby stopped to reverse properly when reversing and to direct his gaze to the rear in the reverse direction to operate the switching element can. This counteracts the danger that could occur due to the routine of frequent reversing on industrial trucks. The low speed "creep" with reduced maximum speed in the restricted speed range on reverse drive with unactuated shift element is perceived as stopping the operation and the drivers will seek to avoid this.
- the limited speed range ensures that the truck can be moved backwards in dangerous situations, if necessary, even without operating the switching element and, if necessary, could be maneuvered out of a danger zone.
- the switching element is a switching signal only when sustained operation.
- the switching element is a pressure switch, which must be constantly pressed for a switching signal.
- the driver's seat may have a driver's seat.
- the invention has a particularly advantageous in an industrial truck with a front-facing driver's seat as a driver's seat, as in contrast to a driver's seat for a stationary driver, the routine even faster means that the uncomfortable posture of turning around during a reverse drive is avoided.
- the switching element is arranged according to a preferred embodiment of the invention at the driver's seat at a suitable location in an area laterally next to and / or behind the driver's seat. This will easily a Arrangement of the switching element achieved, which allows only an actuation of the switching element when the driver turns with the upper body for or during a reverse drive to the rear to direct the view in a reverse direction in the direction of travel to the rear.
- the switching element can be arranged on a driver's seat-carrying hood laterally next to or behind the driver's seat.
- the switching element can be arranged on the armrest or the armrest laterally next to or behind the driver's seat.
- the switching element can be arranged on the rear spar. By attaching the switching element on the rear spar an arrangement of the switching element can be achieved in a range laterally next to or behind the driver's seat with low construction costs.
- the protective cover on two rear spars and the switching element is arranged on the viewed in the direction of travel right spar.
- the switching element By attaching the switching element to a rear spar, the switching element can be arranged in favorable grip position at chest level. In particular, this is possible with little effort in counterbalance forklifts, which must have a driver's roof.
- a handle is arranged so that the switching element can be actuated with fingers of a hand gripping the hand.
- the additional handle allows the rider to rest and posture while reversing is more comfortable.
- the restricted speed range when reversing may correspond to a walking speed, in particular has a reduced maximum reversing speed of 2 km / h.
- the acceleration may be reduced backwards.
- a warning tone sounds during a reverse drive in the restricted speed range, in particular instead of a regular beep sound when reversing a continuous warning tone.
- a beep is generated as an acoustic warning signal.
- an altered acoustic warning signal is generated in the form of a continuous warning tone. The change of the acoustic warning signal makes it possible in a simple manner that the environment of the truck, the operation of the truck with unconfirmed switching element can be detected and perceived safely.
- FIG. 1 shows an inventive truck with switching element in side view.
- an inventive truck 1 which is for example designed as a counterbalance forklift 2, and is equipped with a switching element 3.
- the counterbalance forklift 2 has the front side designed as a mast front lifting device 4 with a height-movably guided on this lifting device 5, for example, consisting of two forks fork. A resting on the load-receiving means 5 load weight is compensated by a rear-side rear counterweight 6.
- the example in the battery-electrically driven counterbalance forklift 2 is driven via front wheels 7 and not shown electric motors as traction drive and has a single steered rear wheel 8 as a three-wheeled forklift.
- the counterbalance forklift 2 may alternatively be provided with an internal combustion engine drive system.
- a driver's seat 9 of the truck 1 is provided with a driver's seat 10 oriented toward the front in the direction of the lifting device 4.
- the driver's seat 10 and other controls, such as a steering wheel 11, are located under a driver's roof 12.
- the driver's roof 12 is supported by rear uprights 14 and optionally additional front spars 13 on a vehicle body of the truck 1.
- the driver's seat 10 is arranged on a hood 20, which covers an assembly space formed in the vehicle body upwards, in which a traction battery or a combustion engine driven counterbalance forklift 2, an internal combustion engine is arranged in a battery-powered counterbalance forklift 2.
- the driver's workplace 9 can be provided with an armrest or the driver's seat 10 with an armrest, wherein on the armrest or the armrest controls, such as joysticks, to control functions, such as the lifting device 4 and / or the load receiving means 5, be arranged can.
- controls such as joysticks
- the switching element 3 is behind the driver's seat 9 in an area laterally next to or behind the driver's seat 10 arranged such that it is located on the driver's seat 10 driver only with laterally turned back torso and thus for or when driving backward in the reverse direction looking driver can be operated.
- the switching element 3 has the function of a deadman switch, by the reverse driving speed of a restricted speed range with reduced maximum reverse travel speed of, for example, a maximum of 2 km / h with unconfirmed switching element by means of an operation on the entire speed range with unredupositoryer maximum backward travel speed, the in The rule is greater than 10km / h, can be switched or released.
- a reduction of the acceleration of the truck 1 in a reverse drive is possible with un-actuated switching element 3.
- the switching element 3 is for this purpose with an electronic control, not shown in operative connection, which controls the travel drive.
- the switching element 3 is attached to the rear spar 14, preferably at breast height of the driver, so that this switching element 3 can be easily reached by the driver when the driver turns in a reverse drive on the driver's seat 10 sitting backwards and the Upper body turns backwards to look back.
- the switching element 3 is attached to the right rear spar 14, which is covered in the representation of the figure by the left spar 14.
- An additional handle 15 on the right rear spar 14 allows the driver to support himself in the posture with the upper body turned to the right rear and at the same time to actuate the shifting element 3 with one or more fingers of his hand.
- the switching element 3 designed as a deadman switch is a pressure switch 16 which only gives a switching signal when it is pressed continuously.
- the invention is not limited to the illustrated embodiment.
- an arrangement of the switching element 3 on the rear spar 14 in an area laterally adjacent to or behind the driver's seat 10 is alternatively possible.
- the switching element 3 can be arranged on the armrest or the armrest such that it is arranged behind the driver's seat 9 in an area laterally next to or behind the driver's seat 10, so that the switching element 3 only laterally from a driver located on the driver's seat 10 can be actuated backward torso.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
Die Erfindung betrifft ein Flurförderzeug, beispielsweise einen Gegengewichtsgabelstapler. Insbesondere betrifft die Erfindung ein Flurförderzeug mit einem hinter einem Fahrerplatz angeordneten Schaltelement zur Bedienung von Funktionen des Flurförderzeugs, wobei das Schaltelement sich in einem Griffbereich einer sich auf dem Fahrerplatz befindlichen Person mit seitlich gedrehtem Oberkörper befindet.The invention relates to an industrial truck, for example a counterbalance forklift. In particular, the invention relates to an industrial truck with a switching element arranged behind a driver's seat for operating functions of the industrial truck, wherein the switching element is located in a grip area of a person located on the driver's seat with laterally turned upper body.
Bei Flurförderzeugen, die von einem mitfahrenden Fahrer gesteuert werden, wird aus Sicherheitsgründen gefordert, dass - wie im Straßenverkehr der Fahrer eines Kraftfahrzeugs - sich der Fahrer bei Rückwärtsfahrt soweit nach hinten umdreht und seinen Blick nach hinten richtet, dass er den Bereich, in dem er fährt, vollständig in seinem Gesichtsfeld hat. Diese Körperhaltung mit weit herum gedrehtem Oberkörper ist relativ unbequem. Bei Flurförderzeugen, vor allem bei Gabelstapiern, kommt es jedoch sehr häufig zu Rückwärtsfahrten. Dies ist beispielsweise beim Be- und Entladen eines Lastkraftwagens der Fall, wenn von der Ladefläche Paletten abgeladen werden.For industrial trucks, which are controlled by a rider driving, is required for safety reasons that - as in the road the driver of a motor vehicle - the driver turns backwards as far backwards and his gaze directed backwards that he the area in which he drives, has completely in his field of vision. This posture, with the torso twisted far, is relatively uncomfortable. In industrial trucks, especially for forklift trucks, however, it is very often to reverse. This is the case, for example, when loading and unloading a truck when pallets are unloaded from the loading area.
Im Regelfall ist es möglich, Flurförderzeuge und insbesondere Gabelstapler mit derselben oder einer nur unwesentlich geringeren Geschwindigkeit in rückwärtiger Richtung zu fahren.As a rule, it is possible to drive industrial trucks and in particular forklifts with the same or an only slightly lower speed in the rearward direction.
Bekannt ist es, als Hilfe für das Rückwärtsfahren Systeme zur Überwachung des Raumes hinter dem Fahrzeug vorzusehen, die bei einem Hindernis ein Warnsignal, entweder optisch und/oder akustisch abgeben. Sollte der Fahrer sich allerdings bei der Rückwärtsfahrt nicht ordnungsgemäß umdrehen und/oder sich nur auf diese Systeme verlassen, so stellt dies dennoch letztlich eine Fahrt ohne Sicht dar, da keine näheren Informationen über die Art der Hindernisse für den Fahrer verfügbar sind. Weiterhin sind Kameraüberwachungssysteme für den Raum hinter dem Flurförderzeug bzw. dem Gabelstapler bekannt, die dem Fahrer ein Videobild bei Rückwärtsfahrt anbieten. Nachteilig ist jedoch, dass dies bedeutet, dass die Rückwärtsfahrt nur anhand eines kleinen Videobildschirmbildes erfolgt, da im Regelfall zwischen den erforderlichen Anzeigen und Armaturen vor dem Fahrerplatz keine sehr große Bildschirmfläche untergebracht werden kann. Zudem ist bei Kamerasystemen mit einem Bildschirm keine räumliche Darstellung des rückwärtigen Raumes gegeben. Weiterhin ist an diesem Stand der Technik nachteilig, dass solche Kammerüberwachungssysteme sehr aufwändig und teuer sind.It is known to provide systems for monitoring the space behind the vehicle as an aid to reversing, which emit an alarm signal, either visually and / or acoustically, in the event of an obstacle. However, if the driver does not turn around properly when reversing and / or relies only on these systems, this ultimately represents a ride without visibility as there is no more detailed information about the nature of the obstacles available to the driver. Furthermore, camera monitoring systems for the space behind the truck or the forklift are known, which offer the driver a video image when reversing. The disadvantage, however, is that this means that the reversing takes place only on the basis of a small video screen image, since as a rule between the required displays and fittings in front of the driver's seat is not a very large screen area can be accommodated. In addition, in camera systems with a screen no spatial representation of the rear space is given. Furthermore, it is disadvantageous in this prior art that such chamber monitoring systems are very complicated and expensive.
Aus der
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Flurförderzeug, insbesondere einen Gegengewichtsgabelstapler, zur Verfügung zu stellen, bei dem während einer Rückwärtsfahrt auf eine korrekte und richtige Bedienung durch einen Fahrer hingewirkt wird.The object of the present invention is to provide an industrial truck, in particular a counterbalanced forklift, in which a correct and correct operation by a driver during a reverse drive is achieved.
Diese Aufgabe wird durch ein Flurförderzeug mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen des erfindungsgemäßen Flurförderzeugs sind in den Unteransprüchen angegeben.This object is achieved by an industrial truck having the features of
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei einem Flurförderzeug, insbesondere einem Gegengewichtsgabelstapler, mit einem hinter einem Fahrerplatz angeordneten Schaltelement zur Bedienung von Funktionen des Flurförderzeugs, wobei das Schaltelement sich in einem Griffbereich einer sich auf dem Fahrerplatz befindlichen Person mit seitlich gedrehtem Oberkörper befindet, bei betätigtem Schaltelement der gesamte Geschwindigkeitsbereich für Rückwärtsfahrt und bei nicht betätigtem Schaltelement ein eingeschränkter Geschwindigkeitsbereich für Rückwärtsfahrt zur Verfügung steht.This object is achieved in that in an industrial truck, in particular a counterbalance forklift, arranged with a behind a driver's compartment switching element for operating functions of the truck, wherein the switching element is located in a grip area of a person located on the driver's seat with laterally rotated upper body, when the shift element is actuated, the entire speed range for reverse travel and when the shift element is not actuated, a restricted speed range for reversing is available.
Das Schaltelement weist somit die Funktion eines Totmannschalters auf, das nur bei einer Betätigung den regulären Betrieb des Flurförderzeugs während einer Rückwärtsfahrt mit dem gesamten Geschwindigkeitsbereich mit der normalen unreduzierten Maximalgeschwindigkeit für die Rückwärtsfahrt ermöglicht. Ist bei einer Rückwärtsfahrt das Schaltelement nicht betätigt, steht bei einer Rückwärtsfahrt lediglich ein eingeschränkter Geschwindigkeitsbereich mit einer deutlich reduzierten Maximalgeschwindigkeit für die Rückwärtsfahrt zur Verfügung. Vorteilhaft wird ein Fahrer dadurch angehalten, sich bei Rückwärtsfahrt ordnungsgemäß umzudrehen und seinen Blick nach hinten in Rückwärtsfahrtrichtung zu richten, um das Schaltelement betätigen zu können. Dadurch wird der Gefahr entgegengewirkt, die durch die Routine des häufigen Rückwärtsfahrten bei Flurförderzeugen auftreten könnte. Das "Kriechen" mit einer geringen Geschwindigkeit mit reduzierter Maximalgeschwindigkeit in dem eingeschränkten Geschwindigkeitsbereich bei einer Rückwärtsfahrt mit unbetätigtem Schaltelement wird als den Arbeitsablauf aufhaltend empfunden und die Fahrer werden dieses zu vermeiden suchen. Durch den eingeschränkten Geschwindigkeitsbereich wird sichergestellt, dass das Flurförderzeug in Gefahrensituationen notfalls auch ohne Betätigung des Schaltelements rückwärts bewegt werden kann und gegebenenfalls aus einer Gefahrenstelle heraus manövriert werden könnte. Es ist aber natürlich auch denkbar und unter bestimmten Umständen eventuell sinnvoll, ein Flurförderzeug vorzusehen, bei dem die Betätigungen des hinter einem Fahrerplatz angeordneten Schaltelements die Voraussetzung und Freigabe für eine Rückwärtsfahrt darstellt und das Flurförderzeug ansonsten nicht rückwärts bewegt werden kann.The switching element thus has the function of a deadman switch, which allows only when actuated the regular operation of the truck during a reverse drive with the entire speed range with the normal unreduced maximum speed for reversing. If the shift element is not actuated during a reverse drive, only a limited speed range with a significantly reduced maximum speed for the reverse drive is available for a reverse drive. It will be advantageous Driver thereby stopped to reverse properly when reversing and to direct his gaze to the rear in the reverse direction to operate the switching element can. This counteracts the danger that could occur due to the routine of frequent reversing on industrial trucks. The low speed "creep" with reduced maximum speed in the restricted speed range on reverse drive with unactuated shift element is perceived as stopping the operation and the drivers will seek to avoid this. The limited speed range ensures that the truck can be moved backwards in dangerous situations, if necessary, even without operating the switching element and, if necessary, could be maneuvered out of a danger zone. However, it is of course also conceivable and under certain circumstances may be useful to provide a truck in which the operations of the arranged behind a driver's compartment switching element is the prerequisite and clearance for a reverse drive and the truck can not otherwise be moved backwards.
Vorteilhaft gibt das Schaltelement nur bei andauernder Betätigung ein Schaltsignal.Advantageously, the switching element is a switching signal only when sustained operation.
Dadurch wird ein Fahrer auf dem Fahrerplatz angehalten, während der gesamten Dauer einer Rückwärtsfahrt sich umzudrehen und seinen Blick nach hinten zu richten.This stops a driver in the driver's seat from turning over and looking backwards for the entire duration of a reverse drive.
In vorteilhafte Ausgestaltung der Erfindung ist das Schaltelement ein Druckschalter, der für ein Schaltsignal andauernd gedrückt werden muss.In an advantageous embodiment of the invention, the switching element is a pressure switch, which must be constantly pressed for a switching signal.
Der Fahrerplatz kann einen Fahrersitz aufweisen.The driver's seat may have a driver's seat.
Die Erfindung wirkt sich bei einem Flurförderzeug mit einem nach vorne ausgerichteten Fahrersitz als Fahrerplatz besonders vorteilhaft aus, da im Gegensatz zu einem Fahrerplatz für einen stehenden Fahrer, die Routine noch schneller dazu führt, dass die unbequeme Körperhaltung des sich Umdrehens während einer Rückwärtsfahrt vermieden wird.The invention has a particularly advantageous in an industrial truck with a front-facing driver's seat as a driver's seat, as in contrast to a driver's seat for a stationary driver, the routine even faster means that the uncomfortable posture of turning around during a reverse drive is avoided.
Das Schaltelement ist gemäß einer bevorzugten Ausführungsform der Erfindung am Fahrerplatz an einer geeigneten Stelle in einem Bereich seitlich neben und/oder hinter dem Fahrersitz angeordnet werden. Hierdurch wird auf einfache Weise eine Anordnung des Schaltelements erzielt, die lediglich eine Betätigung des Schaltelements ermöglicht, wenn sich der Fahrer mit dem Oberkörper für bzw. während einer Rückwärtsfahrt nach hinten dreht, um den Blick bei einer Rückwärtsfahrt in Fahrtrichtung nach hinten zu richten.The switching element is arranged according to a preferred embodiment of the invention at the driver's seat at a suitable location in an area laterally next to and / or behind the driver's seat. This will easily a Arrangement of the switching element achieved, which allows only an actuation of the switching element when the driver turns with the upper body for or during a reverse drive to the rear to direct the view in a reverse direction in the direction of travel to the rear.
Beispielsweise kann das Schaltelement an einer den Fahrersitz tragenden Haube seitlich neben oder hinter dem Fahrersitz angeordnet werden.For example, the switching element can be arranged on a driver's seat-carrying hood laterally next to or behind the driver's seat.
Sofern der Fahrerarbeitsplatz mit einer Armlehne oder einer Armauflage, beispielsweise einer am Fahrersitz angeordneten Armlehne, versehen ist, kann das Schaltelement an der Armauflage bzw. der Armlehne seitlich neben oder hinter dem Fahrersitz angeordnet werden.If the driver's workplace is provided with an armrest or an armrest, for example an armrest arranged on the driver's seat, the switching element can be arranged on the armrest or the armrest laterally next to or behind the driver's seat.
Sofern der Fahrerplatz ein Fahrerschutzdach mit mindestens einem hinteren Holm aufweist, kann das Schaltelement an dem hinteren Holm angeordnet sein. Durch die Anbringung des Schaltelements am hinteren Holm kann mit geringem Bauaufwand eine Anordnung des Schaltelements in einem Bereich seitlich neben oder hinter dem Fahrersitz erzielt werden.If the driver's seat has a driver's protection roof with at least one rear spar, the switching element can be arranged on the rear spar. By attaching the switching element on the rear spar an arrangement of the switching element can be achieved in a range laterally next to or behind the driver's seat with low construction costs.
Vorteilhaft weist das Fahrschutzdach zwei hintere Holme auf und ist das Schaltelement an dem in Fahrtrichtung betrachtetet rechten Holm angeordnet.Advantageously, the protective cover on two rear spars and the switching element is arranged on the viewed in the direction of travel right spar.
Durch die Anbringung des Schaltelements an einem hinteren Holm kann das Schaltelement in günstiger Griffposition auf Brusthöhe angeordnet werden. Insbesondere ist dies mit geringem Aufwand möglich bei Gegengewichtsgabelstaplern, die ein Fahrerschutzdach aufweisen müssen.By attaching the switching element to a rear spar, the switching element can be arranged in favorable grip position at chest level. In particular, this is possible with little effort in counterbalance forklifts, which must have a driver's roof.
Vorteilhaft ist gemäß einer Weiterbildung der Erfindung ein Handgriff so angeordnet, dass mit Fingern einer den Handgriff greifenden Hand das Schaltelement betätigt werden kann.Advantageously, according to a development of the invention, a handle is arranged so that the switching element can be actuated with fingers of a hand gripping the hand.
Durch den zusätzlichen Handgriff kann der Fahrer sich abstützen und die Körperhaltung während der Rückwärtsfahrt ist dadurch bequemer.The additional handle allows the rider to rest and posture while reversing is more comfortable.
Der eingeschränkte Geschwindigkeitsbereich bei Rückwärtsfahrt kann einer Schrittgeschwindigkeit entsprechen, insbesondere eine reduzierte maximale Rückwärtsfahrtgeschwindigkeit von 2 km/h aufweist.The restricted speed range when reversing may correspond to a walking speed, in particular has a reduced maximum reversing speed of 2 km / h.
In dem eingeschränkten Geschwindigkeitsbereich bei Rückwärtsfahrt kann die Beschleunigung rückwärts reduziert sein.In the restricted speed range when reversing, the acceleration may be reduced backwards.
Durch den eingeschränkten Geschwindigkeitsbereich und/oder die reduzierte Beschleunigung des Flurförderzeugs bei einer Rückwärtsfahrt mit unbetätigtem Schaltelement wird sichergestellt, dass das Flurförderzeug notfalls auch ohne Betätigung des Schaltelements aus einer Gefahrenstelle heraus manövriert werden kann.Due to the limited speed range and / or the reduced acceleration of the truck in a reverse drive with un-actuated switching element ensures that the truck can be maneuvered out of danger if necessary even without operation of the switching element.
Vorteilhaft ertönt bei einer Rückwärtsfahrt in dem eingeschränkten Geschwindigkeitsbereich ein Warnton, insbesondere anstatt einem bei Rückwärtsfahrt regulären Piepton ein Dauerwarnton. Bei betätigtem Schaltelement und regulärer Rückwärtsfahrt wird somit ein Piepton als akustisches Warnsignal erzeugt. Erfolgt eine Rückwärtsfahrt bei unbetätigtem Schaltelement wird ein verändertes akustisches Warnsignal in Form eines Dauerwarntons erzeugt. Die Veränderung des akustischen Warnsignals ermöglicht es auf einfache Weise, dass von der Umgebung des Flurförderzeugs der Betrieb des Flurförderzeugs mit unbetätigtem Schaltelement sicher erfasst und wahrgenommen werden kann.Advantageously, a warning tone sounds during a reverse drive in the restricted speed range, in particular instead of a regular beep sound when reversing a continuous warning tone. With activated switching element and regular reverse drive thus a beep is generated as an acoustic warning signal. If a reverse drive when the switching element is unactuated, an altered acoustic warning signal is generated in the form of a continuous warning tone. The change of the acoustic warning signal makes it possible in a simple manner that the environment of the truck, the operation of the truck with unconfirmed switching element can be detected and perceived safely.
Dadurch werden Personen in der Umgebung des Flurförderzeugs zum einen gewarnt. Zum anderen wird dadurch das Verhalten des Fahrers deutlich und dieser angehalten, das Schaltelement stets zu betätigen und sich umzudrehen.This will warn people in the vicinity of the truck on the one hand. On the other hand, by the behavior of the driver is clear and this is required to always operate the switching element and to turn over.
Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in der schematischen Figur dargestellten Ausführungsbeispiels näher erläutert. Hierbei zeigt die Figur ein erfindungsgemäßes Flurförderzeug mit Schaltelement in Seitenansicht.Further advantages and details of the invention will be explained in more detail with reference to the embodiment shown in the schematic figure. Here, the figure shows an inventive truck with switching element in side view.
In der Figur ist ein erfindungsgemäßes Flurförderzeug 1 dargestellt, das beispielsweise als Gegengewichtsgabelstapler 2 ausgebildet ist, und mit einem Schaltelement 3 ausgestattet ist.In the figure, an
Der Gegengewichtsgabelstapler 2 weist frontseitig eine als Hubgerüst ausgebildete vordere Hubvorrichtung 4 mit einem an dieser höhenbeweglich geführten Lastaufnahmemittel 5 auf, beispielsweise einer aus zwei Gabelzinken bestehenden Lastgabel. Ein auf dem Lastaufnahmemittel 5 aufliegendes Lastgewicht wird durch ein heckseitiges hinteres Gegengewicht 6 ausgeglichen.The counterbalance forklift 2 has the front side designed as a mast
Der in dem vorliegenden Beispiel beispielsweise batterie-elektrisch angetriebene Gegengewichtsgabelstapler 2 wird über Vorderräder 7 und nicht dargestellte Elektromotoren als Fahrantrieb angetrieben und weist als Dreiradstapler ein einzelnes gelenktes Hinterrad 8 auf. Der Gegengewichtsgabelstapler 2 kann alternativ mit einem verbrennungsmotorischen Antriebssystem versehen sein.The example in the battery-electrically driven counterbalance forklift 2 is driven via
Ein Fahrerplatz 9 des Flurförderzeugs 1 ist mit einem nach Vorne in Richtung zu der Hubvorrichtung 4 orientierten Fahrersitz 10 versehen. Der Fahrersitz 10 und weitere Bedienelemente, beispielsweise ein Lenkrad 11, befinden sich unter einem Fahrerschutzdach 12. Das Fahrerschutzdach 12 ist durch hintere Holme 14 und gegebenenfalls zusätzliche vordere Holme 13 an einem Fahrzeugkörper des Flurförderzeugs 1 abgestützt.A driver's
Der Fahrersitz 10 ist auf einer Haube 20 angeordnet, die einen in dem Fahrzeugkörper ausgebildeten Aggregateraum nach oben abdeckt, in dem bei einem batterie-elektrisch angetriebenen Gegengewichtsgabelstapler 2 eine Traktionsbatterie bzw. bei einem verbrennungsmotorisch angetriebenen Gegengewichtsgabelstapler 2 ein Verbrennungsmotor angeordnet ist.The driver's
Weiterhin kann der Fahrerarbeitsplatz 9 mit einer Armauflage bzw. der Fahrersitz 10 mit einer Armlehne versehen sein, wobei an der Armauflage bzw. der Armlehne Bedienelemente, beispielsweise Joysticks, zur Steuerung von Funktionen, beispielsweise der Hubvorrichtung 4 und/oder des Lastaufnahmemittels 5, angeordnet sein können.Furthermore, the driver's
Das Schaltelement 3 ist hinter dem Fahrerplatz 9 in einem Bereich seitlich neben oder hinter dem Fahrersitz 10 derart angeordnet, dass es von einem auf dem Fahrersitz 10 befindlichen Fahrer nur mit seitlich nach hinten gedrehtem Oberkörper und somit für oder bei einer Rückwärtsfahrt nach hinten in Rückwärtsfahrtrichtung blickenden Fahrer betätigt werden kann.The switching element 3 is behind the driver's
Das Schaltelement 3 weist erfindungsgemäß die Funktion eines Totmannschalters auf, durch das bei einer Rückwärtsfahrt die Rückwärtsfahrgeschwindigkeit von einem eingeschränkten Geschwindigkeitsbereich mit reduzierter maximaler Rückwärtsfahrgeschwindigkeit von beispielsweise maximal 2 km/h bei unbetätigtem Schaltelement mittels einer Betätigung auf den gesamten Geschwindigkeitsbereich mit unreduzierter maximaler Rückwärtsfahrgeschwindigkeit, die in der Regel größer als 10km/h beträgt, umgeschaltet bzw. freigegeben werden kann. Zudem ist bei unbetätigtem Schaltelement 3 eine Reduzierung der Beschleunigung des Flurförderzeugs 1 bei einer Rückwärtsfahrt möglich.The switching element 3 according to the invention has the function of a deadman switch, by the reverse driving speed of a restricted speed range with reduced maximum reverse travel speed of, for example, a maximum of 2 km / h with unconfirmed switching element by means of an operation on the entire speed range with unreduzierter maximum backward travel speed, the in The rule is greater than 10km / h, can be switched or released. In addition, a reduction of the acceleration of the
Das Schaltelement 3 steht hierzu mit einer nicht mehr dargestellten elektronischen Steuerung in Wirkverbindung, die den Fahrantrieb steuert.The switching element 3 is for this purpose with an electronic control, not shown in operative connection, which controls the travel drive.
Im dargestellten Ausführungsbeispiels ist das Schaltelement 3 an dem hinteren Holm 14 befestigt, bevorzugt auf Brüsthöhe des Fahrers, so dass dieses Schaltelement 3 von dem Fahrer gut erreicht werden kann, wenn der Fahrer sich bei einer Rückwärtsfahrt auf dem Fahrersitz 10 sitzend nach rückwärts wendet und den Oberkörper nach hinten dreht, um seinen Blick nach hinten zu richten.In the illustrated embodiment, the switching element 3 is attached to the
Alle Angaben in Bezug auf Richtungen, wie Vorwärtsfahrt, Rückwärtsfahrt, Vorne, Hinten beziehen sich auf die reguläre Vorwärts-Fahrtrichtung des Gegengewichtsgabelstapler 2, die durch den Pfeil V in der Figur angegeben ist. Angaben wie "rechts" oder "links" sind mit Blickrichtung in dieser Fahrtrichtung V zu verstehen.All references to directions such as forward, reverse, front, rear refer to the regular forward direction of travel of the counterbalance forklift 2 indicated by the arrow V in the figure. Information such as "right" or "left" are to be understood in the direction of travel V in this direction.
Vorteilhaft ist dabei das Schaltelement 3 an dem rechten hinteren Holm 14 angebracht, die in der Darstellung der Figur durch den linken Holm 14 überdeckt ist.Advantageously, the switching element 3 is attached to the right
Ein zusätzlicher Handgriff 15 an dem rechten hinteren Holm 14 ermöglicht es dem Fahrer, sich in der Körperhaltung mit nach rechts hinten gedrehtem Oberkörper abzustützen und gleichzeitig mit einem oder mehreren Fingern der Hand das Schaltelement 3 zu betätigen.An
In dem vorliegenden Beispiel ist das als Totmannschalter ausgebildete Schaltelement 3 ein Druckschalter 16, der nur dann ein Schaltsignal gibt, wenn er andauernd gedrückt wird.In the present example, the switching element 3 designed as a deadman switch is a pressure switch 16 which only gives a switching signal when it is pressed continuously.
Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt. Anstelle der Anordnung des Schaltelements 3 an dem hinteren Holm 14 ist alternativ eine Anordnung des Schaltelements 3 an der Haube 20 in einem Bereich seitlich neben oder hinter dem Fahrersitz 10 möglich. Alternativ kann das Schaltelement 3 an der Armauflage bzw. der Armlehne derart angeordnet werden, dass es hinter dem Fahrerplatz 9 in einem Bereich seitlich neben oder hinter dem Fahrersitz 10 angeordnet, so dass das Schaltelement 3 lediglich von einem auf dem Fahrersitz 10 befindlichen Fahrer mit seitlich nach hinten gedrehtem Oberkörper betätigt werden kann.The invention is not limited to the illustrated embodiment. Instead of the arrangement of the switching element 3 on the
Claims (13)
- Industrial truck, in particular counterbalance fork-lift truck (2), with a switching element (3), which is arranged behind a driver's place (1), for operating functions of the industrial truck (1), wherein the switching element (3) is located within reach of a person, with the upper body turned laterally, in the driver's place (9), characterized in that, when the switching element (3) is actuated, the entire speed range is available for reversing and, when the switching element (3) is not actuated, a limited speed range is available for reversing.
- Industrial truck according to Claim 1, characterized in that the switching element (3) gives a switching signal only upon persistent actuation.
- Industrial truck according to Claim 2, characterized in that the switching element (3) is a press switch (16) which has to be pressed persistently for a switching signal.
- Industrial truck according to one of Claims 1 to 3, characterized in that the driver's place (9) is a driver's seat (10).
- Industrial truck according to Claim 4, characterized in that the switching element (3) is arranged at the driver's place (9) in a region laterally next to and/or behind the driver's seat (10).
- Industrial truck according to Claim 4 or 5, characterized in that the driver's place (9) has a hood (20) supporting the driver's seat (10), wherein the switching element (3) is arranged on the hood (20).
- Industrial truck according to one of Claims 1 to 5, characterized in that the driver's place (9) is provided with an armrest or an arm support, in particular an armrest arranged on the driver's seat (10), wherein the switching element (3) is arranged on the arm support or the armrest.
- Industrial truck according to one of Claims 1 to 7, characterized in that the driver's place (9) has a driver's protective roof (12) with at least one rear spar (14) on which the switching element (3) is arranged.
- Industrial truck according to Claim 8, characterized in that the driver's protective roof (12) has two rear spars (14) and the switching element (3) is arranged on the right spar (14), as viewed in the direction of travel.
- Industrial truck according to one of Claims 1 to 9, characterized in that a handle (16) is arranged in such a manner that the switching element (3) can be actuated by fingers of a hand gripping the handle (16).
- Industrial truck according to one of Claims 1 to 10, characterized in that the limited speed range during reversing corresponds to a walking speed, in particular has a reduced maximum reversing speed of 2 km/h.
- Industrial truck according to one of Claims 1 to 11, characterized in that, in the limited speed range during reversing, the acceleration rearwards is reduced.
- Industrial truck according to one of Claims 1 to 12, characterized in that, during reversing in the limited speed range, a warning tone sounds, in particular a continuous warning tone sounds instead of a beeping tone which is normal during reversing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110105953 DE102011105953A1 (en) | 2011-06-29 | 2011-06-29 | Industrial truck with safety device |
Publications (2)
Publication Number | Publication Date |
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EP2540657A1 EP2540657A1 (en) | 2013-01-02 |
EP2540657B1 true EP2540657B1 (en) | 2013-09-18 |
Family
ID=46168228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20120169065 Active EP2540657B1 (en) | 2011-06-29 | 2012-05-23 | Industrial truck with safety device |
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Country | Link |
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EP (1) | EP2540657B1 (en) |
DE (1) | DE102011105953A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106219446A (en) * | 2016-08-24 | 2016-12-14 | 太仓宏璟瑞远物业管理有限公司 | A kind of engine fork lift trucks being provided with speed limit alarm |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3042956A1 (en) * | 1980-11-14 | 1982-07-01 | Bengel, Friedrich, 7148 Remseck | Forklift truck providing variable operator working position - has drivers seat and steering column turnable through 180 deg. inside cabin |
US5740887A (en) * | 1996-01-18 | 1998-04-21 | Jlg Industries, Inc. | Drive system for vertical mast personnel lift |
DE19650338A1 (en) * | 1996-03-21 | 1997-09-25 | Linde Ag | Fork lift truck drivers seat |
JP4605516B2 (en) | 2001-04-23 | 2011-01-05 | コマツユーティリティ株式会社 | Forklift electrical equipment |
-
2011
- 2011-06-29 DE DE201110105953 patent/DE102011105953A1/en not_active Withdrawn
-
2012
- 2012-05-23 EP EP20120169065 patent/EP2540657B1/en active Active
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DE102011105953A1 (en) | 2013-01-03 |
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