EP2650251B1 - Chariot élévateur à fourche - Google Patents

Chariot élévateur à fourche Download PDF

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Publication number
EP2650251B1
EP2650251B1 EP12164152.6A EP12164152A EP2650251B1 EP 2650251 B1 EP2650251 B1 EP 2650251B1 EP 12164152 A EP12164152 A EP 12164152A EP 2650251 B1 EP2650251 B1 EP 2650251B1
Authority
EP
European Patent Office
Prior art keywords
holding device
battery element
forklift truck
weight
battery
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.)
Active
Application number
EP12164152.6A
Other languages
German (de)
English (en)
Other versions
EP2650251A1 (fr
Inventor
Jakob Arvidsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Material Handling Manufacturing Sweden AB
Original Assignee
BT Products AB
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Filing date
Publication date
Application filed by BT Products AB filed Critical BT Products AB
Priority to EP12164152.6A priority Critical patent/EP2650251B1/fr
Publication of EP2650251A1 publication Critical patent/EP2650251A1/fr
Application granted granted Critical
Publication of EP2650251B1 publication Critical patent/EP2650251B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07513—Details concerning the chassis
    • B66F9/07531—Battery compartments

Definitions

  • the present invention relates to a forklift truck comprising, power consuming units to be supplied from an energy source, a holding device provided with compartments for receiving at least two battery elements for providing said energy source, wherein said holding device is adapted such that a received battery element can power said forklift truck on its own.
  • the invention also relates to a battery element and a weight for the fork lift truck.
  • a battery module system for a floor conveyor is known from the document EP 2 261 167 A1 .
  • This document describes a floor conveyor having a device for receiving several battery units which each can provide the floor conveyor with electrical power.
  • the presented floor conveyor has battery packs in the size of 35 Ah per battery pack.
  • the floor conveyor of the document is presented as a low lifting floor conveyor.
  • Another prior art document is DE 10 2005 053305 A1 , that discloses an electric forklift truck having a door to the battery compartment that allows for vertical support on the ground.
  • the object of the present invention is to improve arrangement of batteries suggested in the prior art such that it is more flexible and can be used for forklift trucks in any size and such that the forklift trucks using such a system can be easily adapted to different sizes of loads and/or load lifting heights.
  • a fork lift truck comprising, power consuming units to be supplied from an energy source, a holding device provided with compartments for receiving at least two battery elements for providing said energy source, wherein said holding device is adapted such that a received battery element can power said forklift truck on its own, wherein the said holding device is arranged to be able to receive a battery element in a horizontal arrangement such that the applied weight of a received battery element is essentially on the centre of a longitudinal symmetry axis of the forklift truck.
  • the advantage of this fork lift truck is that the centre of gravity is not affected with regard to its horizontal position in particular in the transversal direction of the fork lift truck when a battery element is inserted. Thus the properties for example of turning are not affected if the weight of a used battery element differs from another battery element that has been used or will be used.
  • Another advantage is that the battery element can be made larger as a horizontal receiving of the battery element, allows displacement of the battery by an operator without needing to lift the battery element during the displacement in the holding device.
  • the holding device is arranged such that a first and a second battery element that are received in the holding device are arranged essentially on top of each other such that the position of the forklift truck's centre of gravity remains unchanged with regard to a longitudinal symmetry axis of said truck.
  • the said holding device is arranged such that it can accommodate a weight.
  • the holding device By arranging the holding device, such that a weight can be accommodated the industrial truck can be arranged such that higher lifting heights can allowed, thus the lift height properties of the fork lift truck can for example be altered easily allowing for using many components in common for a low lifting fork lift truck and a fork lift stacker.
  • the said holding device is arranged such that a received weight results in that the position of the forklift truck's centre of gravity remains unchanged with regard to a transversal direction to the longitudinal symmetry axis of said truck.
  • said holding device is arranged such that a received weight can be fixedly arranged in the forklift truck.
  • This arrangement has the advantage that the operator cannot easily himself remove the said weight, for example in a desire to ad an even further battery element, thus altering unintentionally the properties of the said fork lift truck.
  • the holding device comprises transport means for facilitating horizontal displacement of a battery element within said holding device, preferably in the form of wheels, and/or rolls and/or a slide track.
  • the invention also deals with the battery elements to be used in the mentioned forklift truck.
  • the battery element preferably has a weight/Ah ratio that is lower, than 2. This is particularly advantages with the above invention as the batteries can accommodate more energy.
  • a type of battery elements having these characteristics are Lithium technology batteries. These types of batteries have the advantage that they are light and don't evaporate gases during charging. Nor do they need to be discharged before they can be charged, they don't have a memory in that respect.
  • the battery element comprises means for transportation preferably in the form of at least one wheel, and/or roll and/or low friction surface.
  • a weight for a forklift truck according to the above.
  • the weight is arranged such that it can be received in said holding device.
  • Fig.1 discloses a low lifting forklift truck 1 comprising a holding device 2.
  • the holding device 2 is arranged such that it can receive one or several battery elements 10, as shown in fig. 4 .
  • the holding device 2 is as can be seen in the drawings arranged such that a battery element 10 can be inserted horizontally.
  • the disclosed holding device 2 has four compartments 3 for receiving battery elements 10.
  • the compartments 3 are designed such that a battery element 10 can be slid into each compartment 3. The design of this is performed in a know manner to the person skilled in the art.
  • the compartment 3 is preferably performed as having a floor and a bottom and side walls. Thus a battery element 10 inserted in the compartment 3 can reside with its full bottom surface on the bottom of the respective compartment 3.
  • the exemplified fork lift truck 1 is shown with compartments 3 empty. In use the fork lift truck 1 should be provided with at least one battery element 10.
  • each compartment 3 there are disclosed electrical connections 4 for each battery element 10. Even though the electrical connections 4 is disclosed as being at the far end of each compartment 3 it is thinkable that the electrical connections 4 is arranged in any suitable way such that a good connection to a received battery element 10 is achieved.
  • the advantage of the connection 4 in the far end is that the battery element 10 is easily connected and the compartment perimeter aids in positioning the battery element 10 for a correct connection. It is possible to arrange a connection that uses a cable connection that can be attached once the battery element 10 has been inserted, in particular using a gasket. The advantage of this is that it is easier to disconnect a faulty battery element 10 during operation, or if the operator desires to transport the battery element 10 to another place of the work place for transfer to another forklift truck 1, 1', he need not connect it.
  • the holding device 2 can in each compartment be provided with transport means in the form of wheels, rolls, or a low friction surface. These can be applied to the floor, and or walls.
  • the Transport means can be arranged such that they can interact with transport means 13 of inserted battery elements 10.
  • Fig. 7 discloses a holding device 2 which is provided with fastening means 5, 6.
  • These fastening means 5, 6 is in the form of an opening 5 and a pin 6.
  • the pin 6 is arranged to be able to be received by in particular a weight 20 according to fig. 8 .
  • the weight 20 has in turn an opening 21, in the form of a boring, for receiving the pin 6.
  • a weight 20 can be fixedly arranged in the compartment 3 provided with the fastening means 5, 6.
  • the fastening means 5, 6 is only exemplified, and could be constituted by any other fastening means.
  • the compartment 3 could be provided with a hatch that closes the compartment.
  • the hatch could in turn be provided with a lock, for example a key lock that needs a key to be opened.
  • the control of removal of the weight 20 could be controlled for example by the manufacturer of the fork lift truck 1, 1'.
  • the discussed fastening means is also applicable to the battery elements 10.
  • battery elements 10 received in the compartments are locked in place such that the battery elements 10 cannot be displaced unless desired by the operator. If the compartments are provided with hatches the hatch for the compartments 3 that are intended for receiving battery elements 10 should have different lock and key.
  • the operator could be provided with a key that can be used to open the battery element 10 compartment hatches such that battery elements 10 can be handled by an operator and the weight 20 can only be operated by for example a service person or the manufacturer of the fork lift truck 1, 1'. It should be understood that also battery elements 10 could be fixedly arranged in the holding device by similar attachment means as described above together with the weight 20.
  • the holding device 2 can allow charging of battery elements 10 in the holding device 2.
  • the holding device 2 could for this reason be adapted with needed electrical couplings etc.
  • a fork lift truck 1' of comprising a holding device 2 is disclosed.
  • This fork lift truck 1' is of the reach truck type.
  • This fork lift truck 1' is intended for lifting loads high above the floor level.
  • the holding device 2 can be provided with more than one weight 20.
  • fastening means provided in the compartments 3.
  • the weights are positioned in the holding device 2 from bottom up such that the center of gravity is kept as low as possible.
  • the same is applicable to most fork lift trucks, in particular to the fork lift truck 1 of Fig. 1 -2 .
  • the forklift truck 1 of Fig. 1 can have a desirable number of weights 20 applied to it should it be desirable.
  • a different number of weights 20 would be desirable than for a low lifting fork lift truck 1 as the one disclosed in Fig. 1-2 .
  • an industrial truck can be provided with and without a weight 20.
  • a weight 20 is not mandatory.
  • At least one battery element 10 is still necessary for normal operation of the fork lift truck 1, 1'.
  • Fig 6 discloses a battery element 10 for use in the described fork lift truck 1, 1', as exemplified in Fig. 1 and Fig. 3 .
  • the battery element is provided with a handle 11 for handling and transport of the battery element 10.
  • the battery element 10 is of the voltage and capacity such that it can on its own power the fork lift truck 1, 1' that it is used in.
  • the battery element 10 further comprises electrical contacts 12 for connection with the contacts 4 of the respective compartment 3.
  • the contacts 12 could be altered to any suitable connection device, in particular as mentioned a cable connection device using a gasket for connection of the battery element 10 with the electrical system of the fork lift truck 1,1'.
  • the battery element 10 of Fig. 6 is also provided with transport means in the form of a pair of wheels 13 at one end of the battery element 10.
  • the wheels 13 facilitates the pushing and dragging of the battery element 10 in the compartment 3.
  • the wheels 13 could be replaced by rolls or a low friction surface.
  • the position of the transport means is not to be understood as being only possible in the corner of the battery element 10.
  • the transport means can be positioned in essentially any suitable position of the battery element 10. It should also be possible to arrange the battery element 10 without any transport means. In this case it is preferred that each compartment 3 is provided with transport means.
  • the battery element 10 is preferably a battery element that has a weight/Ah ratio that is lower than 2.
  • the battery element 10 should be based on technology that doesn't evaporate gases during charging.
  • the preferred battery type is Lithium technology batteries. These types of battery elements fulfil the weight/Ah requirement. With Lithium technology should be understood any battery based on Lithium, such as Lithium Ion, Lithium Polymer batteries, and Lithium combined with other chemical elements such as Phosphor or even Li-air. These types of batteries are advantageous in that they have low or non existing charging memory and thus need not be fully discharged before charging can be begun again.
  • other battery types are thinkable for use as battery elements 10 in the holding device 2, such as Ni-MH-, Ni-Cd-, NaNiCI-technology based battery elements 10.
  • Fig. 8 discloses a weight 20 for use in the holding device 2.
  • the weight 20 in particular has a lifting device 22, which should be arranged to be able to receive a lifting device 22 such as an overhead crane.
  • the weight 20 can comprise means 21 in the form of a boring for receiving a fastening pin 6, for fixedly arranging the weight 20.
  • the weight can however be arranged for any conventional fastening in the holding device 2 of the fork lift truck 1, 1'.
  • the weight 20 could also be provided with transport means as the battery elements 10. However generally this is not needed as the weight 20 is installed when manufacturing the fork lift truck 1, 1'.
  • the centre of gravity 31 of the fork lift truck 1, 1' is essentially not displaced horizontally, when battery elements 10 or weights 20 are provided in the holding device 2.
  • the transversal position of the centre of gravity 31 is maintained on the centre axis 30.
  • the vertical position of the centre of gravity 31 will of course be altered if weights 20 or battery elements 10 is added or removed from the holding device 2.
  • weights are preferably positioned from the bottom up, where as battery elements 10 of light type, such as the Lithium technology batteries can be allowed to be positioned a little more freely as they impact the centre of gravity 31 less than the weights 20.
  • the holding device 2 as described above could also house a charging device in one of the compartments 3. Thus charging could be facilitated and the charging device could be removed if not needed.
  • the charging device should have essentially the same dimensions as the battery elements 10 or weights 20, such that the usual compartments 3 could be used.
  • the user removes the battery element 10 at a charging station. He transports the battery element 10 to the fork lift truck 1, 1' to be used. He then installs the battery element 10 in the holding device 2 of the fork lift truck 1, 1' that he intends to use. The battery element 10 is locked in place by the operator. He can then operate the fork lift truck 1, 1' supplied from the battery element 10. When he has finished operating the fork lift truck 1, 1' he can remove the battery element 10 and position it at a charging station. Another operator can then after sufficient charging use the same battery element 10 in another forklift truck 1, 1'.
  • a company operating fork lift trucks 1, 1' can order a fork lift truck with different capacities, in terms of operating time, lifting heights etc.
  • the fork lift manufacturer or service company then ads or removes the number of weights 20 that is needed for the particular specification.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Claims (9)

  1. Chariot élévateur à fourche (1, 1') comprenant des unités de consommation d'énergie destinées à être approvisionnées à partir d'une source d'énergie, un dispositif de support (2) doté de compartiments (3) pour recevoir au moins deux éléments de batterie (10) pour fournir ladite source d'énergie, dans lequel ledit dispositif de support (2) est adapté de sorte qu'un élément de batterie (10) reçu peut alimenter ledit chariot élévateur à fourche (1, 1') de lui-même, en ce que ledit dispositif de support (2) est agencé pour recevoir un élément de batterie (10) dans un agencement horizontal de sorte que le poids appliqué d'un élément de batterie (10) reçu est essentiellement au centre d'un axe de symétrie longitudinal (30) du chariot élévateur à fourche (1, 1'), caractérisé en ce que le dispositif de support (2) est en outre agencé de sorte qu'un premier et un second élément de batterie (10) qui sont reçus dans le dispositif de support (2) sont agencés essentiellement l'un sur l'autre de sorte que la position du centre de gravité (31) du chariot élévateur à fourche (1, 1') reste inchangée par rapport à l'axe de symétrie longitudinal (30) dudit chariot (1, 1').
  2. Chariot élévateur à fourche (1, 1') selon la revendication 1, caractérisé en ce que ledit dispositif de support (2) est agencé de sorte qu'il peut accueillir un poids (20).
  3. Chariot élévateur à fourche (1, 1') selon la revendication 2, caractérisé en ce que ledit dispositif de support (2) est agencé de sorte qu'un poids (20) reçu se traduit par le fait que la position du centre de gravité (31) du chariot élévateur à fourche (1, 1') reste inchangée par rapport à une direction transversale de l'axe de symétrie longitudinal (30) dudit chariot (1, 1').
  4. Chariot élévateur à fourche (1, 1') selon l'une quelconque des revendications 2 à 3, caractérisé en ce que ledit dispositif de support (2) est agencé de sorte qu'un poids (20) reçu peut être agencé de manière fixe dans le chariot élévateur à fourche (1, 1').
  5. Chariot élévateur à fourche (1, 1') selon l'une quelconque des revendications ci-dessus, caractérisé en ce que le dispositif de support (2) comprend des moyens de transport pour faciliter le déplacement horizontal d'un élément de batterie (10) à l'intérieur dudit dispositif de support (2) de préférence sous la forme de roues et/ou de rouleaux et/ou de rail coulissant.
  6. Chariot élévateur à fourche selon l'une quelconque des revendications ci-dessus caractérisé en ce que le dispositif de support comprend un élément de batterie (10) qui a un rapport de poids/Ah qui est inférieur à 2.
  7. Chariot élévateur à fourche selon l'une quelconque des revendications ci-dessus, caractérisé en ce que le dispositif de support comprend un élément de batterie (10) à technologie au lithium.
  8. Chariot élévateur à fourche selon l'une quelconque des revendications ci-dessus, caractérisé en ce que l'élément de batterie (10) comprend des moyens de transport (13) se présentant de préférence sous la forme d'au moins une roue (13) et/ou d'un rouleau et/ou d'une surface à faible frottement.
  9. Chariot élévateur à fourche selon l'une quelconque des revendications ci-dessus, caractérisé en ce que le dispositif de support comprend un élément de batterie (10) avec une poignée qui permet d'insérer l'élément de batterie (10) dans ledit dispositif de support (2).
EP12164152.6A 2012-04-13 2012-04-13 Chariot élévateur à fourche Active EP2650251B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12164152.6A EP2650251B1 (fr) 2012-04-13 2012-04-13 Chariot élévateur à fourche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12164152.6A EP2650251B1 (fr) 2012-04-13 2012-04-13 Chariot élévateur à fourche

Publications (2)

Publication Number Publication Date
EP2650251A1 EP2650251A1 (fr) 2013-10-16
EP2650251B1 true EP2650251B1 (fr) 2015-08-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020132398A1 (de) 2020-12-07 2022-06-09 Hpf Gmbh Gabelstapler oder flurförderfahrzeug mit einem zusatzakkumulator sowie verfahren zum betreiben eines solchen
US12451527B2 (en) 2017-07-13 2025-10-21 Ethium, Llc Modular lithium-ion battery system for fork lifts

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012107670A1 (de) * 2012-08-21 2014-02-27 Still Gmbh Adapterrahmen für Traktionsbatterie sowie Flurförderzeug mit Traktionsbatterie
DE102013020292B4 (de) * 2013-12-09 2016-08-18 Jungheinrich Aktiengesellschaft Batteriesystem für ein Flurförderzeug
DE102013114843A1 (de) * 2013-12-23 2015-06-25 Linde Material Handling Gmbh Traktionsbatterie mit Batteriemanagementsystem
GB2582260B (en) 2019-03-01 2023-03-08 Bamford Excavators Ltd Working machine
US12266953B1 (en) 2020-08-17 2025-04-01 Econtrols, Llc Dual chemistry rechargeable battery system for use in electric APU-equipped commercial trucks
WO2022256730A1 (fr) 2021-06-04 2022-12-08 Econtrols, Llc Système de charge de batterie au lithium-ion pour élévateurs à fourche
JP7164840B1 (ja) * 2021-08-25 2022-11-02 八洲電業株式会社 電池装置およびフォークリフト
CN113942958A (zh) * 2021-10-20 2022-01-18 安徽合力股份有限公司 一种内燃叉车再利用的方法及安装包
SE2350950A1 (en) * 2023-08-09 2025-02-10 Pronomic Ab An electric lifting trolley
DE102024106237A1 (de) * 2024-03-05 2025-09-11 Jungheinrich Aktiengesellschaft Anordnung wenigstens einer Traktionsbatterie und wenigstens eines Ausgleichsgewichts eines Flurförderzeugs
DE102024106239A1 (de) * 2024-03-05 2025-10-02 Jungheinrich Aktiengesellschaft Flurförderzeug sowie Traktionsbatterie und Verwendung derselben

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
GB1511186A (en) * 1977-02-24 1978-05-17 Rubbery Owen Conveyancer Ltd Industrial lift trucks
US5360307A (en) * 1992-12-07 1994-11-01 Windsor Industries Battery transfer technique for vehicle
DE102005053305A1 (de) * 2005-11-09 2007-05-10 Linde Ag Flurförderzeug mit einer Batterietür und einer Vertikalstütze
DE102009024696A1 (de) 2009-06-12 2010-12-16 Jungheinrich Ag Flurförderzeug mit einer Batterieeinheit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12451527B2 (en) 2017-07-13 2025-10-21 Ethium, Llc Modular lithium-ion battery system for fork lifts
DE102020132398A1 (de) 2020-12-07 2022-06-09 Hpf Gmbh Gabelstapler oder flurförderfahrzeug mit einem zusatzakkumulator sowie verfahren zum betreiben eines solchen
WO2022122302A1 (fr) 2020-12-07 2022-06-16 Hpf Gmbh Chariot élévateur à fourche ou chariot de manutention ayant une batterie auxiliaire et procédé de fonctionnement d'un tel chariot

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