EP3037377A1 - Reach truck, battery exchange system with a reach truck and reach truck battery change method - Google Patents

Abstract

Reach truck (100) with a reach (1), an electric drive and a battery (2), in which the battery (2) with the help of the mast (1) is interchangeable.

Description

The invention relates to a reach truck, a battery change system with a reach truck and a reach truck battery replacement method.

The term "reach truck" is referred to in this document in particular a truck that has a reach, so a displaceable in the horizontal direction mast, regardless of whether a support fork is present or not. Reach trucks are already known.

For example, the shows DE 10 2011 018 506 A1 a reach truck. A disadvantage of known reach trucks with electric drive that their battery replacement is often device-intensive, so for example, requires a further forklift, a crane or the like or is time consuming and not very comfortable for the user.

The invention has set itself the task of providing a reach truck, a battery replacement system with a reach truck and a reach truck battery replacement method, which is improved in terms of at least one of the disadvantages mentioned.

This object is achieved by the reproduced in claim 1 reach truck, reproduced in claim 6 battery replacement system and reproduced in claim 9 Reach truck battery replacement method.

The reach truck according to the invention has a reach mast. The reach truck also has an electric drive and a drive battery. The term "battery" is referred to in the context of this document, this drive battery. The battery can be changed with the help of the push mast. This creates a prerequisite for being able to carry out the battery replacement without extensive further equipment or facilities.

The battery is preferably rechargeable.

The battery is preferably located behind the mast or on the back of the mast to provide a counterbalance to the load carried by the reach truck and thereby increase the stability of the reach truck.

With the term "back" of the push mast in the context of this document, in particular, the far away from the transported Good side of the push mast is called. If, as in an important embodiment, on the mast support forks are arranged, then the term "back" of the push mast, the opposite said forks side of the push mast is called.

The reach truck has in one embodiment a battery compartment, which is preferably accessible from above, in one embodiment exclusively. This achieves a simple way that the battery can not tip over sideways out of the reach truck.

In one embodiment, the reach truck has a battery lift. The battery lifting device is preferably either mounted on the mast and activated for the battery change or on the mast for the Battery change can be mounted and dismantled after a battery change. Advantageously, the battery lifting device is mounted on the mast or mounted so that it can be raised and lowered by means already present on the reach truck. If the reach truck has a fork carriage, then the battery lifting device is preferably mounted or mounted on this fork carriage.

The assembly and / or disassembly of the battery lifting device is preferably without tools or by means of exactly one tool or by means of exactly two tools possible, so it can preferably be made quickly and easily.

Advantageously, the battery lifting device is mounted or mounted on the back of the drawer.

In one embodiment, the battery lifting device comprises at least one, preferably exactly two Kragträger. The cantilever beams may preferably also be referred to as battery lifting trusses. The carrying capacity of the battery lifting device is preferably more than one ton and more preferably less than five tons. In one embodiment, the carrying capacity is about 1350 kg and in another embodiment, the carrying capacity is about 2200 kg.

At the free end of the battery lifting device, a battery coupling means, such as a hook, is preferably provided. The battery preferably has a negative feedback means, such as an eyelet.

The length of the battery lifting device is preferably greater than the distance of the push mast in its basic position from the rear of the reach truck.

In another embodiment, the reach truck has a battery compartment, which is preferably accessible from the side.

If the reach truck includes a battery pad that allows a displacement of the battery - preferably without lifting them before - then a prerequisite for a particularly rapid battery replacement is created.

In order to provide a battery support, which allows a displacement of the battery, preferably rollers are arranged at the bottom of the battery compartment of the reach truck. The rollers are preferably not driven.

Instead of rollers arranged on the reach truck, it is in principle conceivable that a battery cart is provided which allows a displacement of the battery. The battery cart is preferably not driven. The battery pad can thus include a battery cart. In one embodiment, it does not include a battery cart, but instead preferably, as already mentioned, rollers arranged on the reach truck.

Advantageously, the reach truck comprises a displacement means by means of which the battery is displaceable by means of the push mast in the horizontal direction.

The displacement means is advantageously either mounted on the mast and activated for changing the battery or it can be mounted on the mast for battery replacement and dismantled after a battery change.

The assembly and / or disassembly of the displacement means is preferably without tools or by means of exactly one tool or by means of exactly two tools possible, so it can preferably be made quickly and easily.

The displacement means preferably comprises at least one push beam or is formed by at least one push beam. In one embodiment, the displacement means comprises exactly two thrust traverses or is formed thereby.

The at least one push bar is preferably mounted or mounted on the back of the mast.

The reach of the reach truck is preferably only so far displaceable in the direction of its rear side, that its distance in its most retracted position to the this side end of the reach truck, which is also referred to as "home position" is greater than the dimensions of preferred here arranged battery. The created by this, not passable by the reach of the reach of the reach truck is available in this way for the battery compartment and frame elements of the reach truck. The length of the drawbar spreader, that is to say the drawbar, is preferably greater than the distance of the drawbar in its basic position from the end of the reach truck located on its rear side. The length of the push beam is therefore preferably greater than the distance of the push mast in its basic position from the rear of the reach truck.

The displacement means, in particular the at least one push beam, is permanently mounted on the reach truck in one embodiment and is also preferably pivotable for activation from an at least substantially vertical stowed position into an at least substantially horizontal working position, preferably hydraulically.

The displacement means, in particular the at least one push beam, may have coupling means, preferably at its free end, for connecting the displacement means to the battery, for example a hook. On the battery counter-coupling means are preferably provided, such as an eyelet. In this way, as preferred, not only the empty battery with the displacement means of the reach truck can be pushed, but the full battery is preferably pulled by means of the displacement means on the reach truck.

The invention also relates to a battery replacement system with a reach truck according to claim 5. This battery replacement system comprises a stationary battery receptacle, preferably with a battery support, which allows a displacement of the battery, preferably without lifting before. The stationary battery receptacle can be arranged for example in a workshop. This stationary Battery receptacle preferably comprises a stationary roller conveyor or is formed thereby. The rollers are preferably not driven. The battery support of the stationary battery holder is preferably non-displaceable in the vertical direction, ie preferably not liftable and / or lowerable. In this way, the stationary battery receptacle can be made particularly simple and robust.

In the basically conceivable embodiment, in which a battery cart is provided, the roles of the stationary battery intake are dispensable.

The battery support of the stationary battery holder is preferably higher than at ground level and more preferably arranged at the same height as the battery support of the reach truck.

Advantageously, the reach truck has battery securing means which securely attach the battery to the remainder reach truck. In addition, means for releasing these battery securing means are advantageously provided. In one embodiment, the stationary battery receptacle comprises actuating means for actuating the means for releasing the battery securing means. These actuating means may be a protruding tab arranged on the stationary roller conveyor and, when the reach truck is arranged on the stationary roller conveyor, comes into contact with the battery securing means of the reach truck and, for example, presses a detent.

Advantageously, the reach truck comprises means for maintaining the electrical connection between the rest of the reach truck and its battery, in particular its empty battery, the method of the rest reach truck from their own power when outside the reach truck arranged battery, in particular empty battery allow. As "empty battery" is referred to in the context of this document, in particular a battery that has already released a large part of the electrical energy stored in it, but not deeply discharged, which still contains enough electrical energy to move the reach truck over a limited distance ,

If the means comprise an electrical line which can be dispensed and retrieved, preferably by means of a spring cable, then the maintenance of the electrical connection between the reach truck and its empty battery is ensured in a particularly reliable manner when the empty battery is arranged outside the remainder of the reach truck.

Advantageously, the electrical line using the spring cable - preferably automatically - can be dispensed and retrieved, preferably without being rolled up and unrolled. The electrical line is referred to in this document as "adapter cable".

The invention also relates to a reach truck battery change method with a reach truck according to one of claims 1 to 5, 7, 8.

The battery, which is electrically connected to the reach truck, is relocated using the reach truck of the reach truck. This is preferably an empty battery.

Preferably, this is connected to the reach truck electrically connected battery - preferably using the push mast - outside of the other reach truck. Preferably, the remainder of the reach truck is subsequently moved, preferably removing itself from this battery. In this case, preferably the electrical connection to this battery is maintained.

In one embodiment of the method, the arrangement of this battery outside of the reach truck is done by lifting and then settling using the push mast. In another embodiment, the arrangement of this battery is outside the reach truck by moving using the push mast, preferably only by moving.

Preferably, the reach truck is moved while maintaining the electrical connection to this battery to another, preferably full battery. Subsequently, the electrical connection of the remaining reach truck is preferably separated to this battery and made to the other battery.

• Der Schubmaststapler wird an eine Batteriewechselstation gefahren.
• Der Schubmast wird in eine Position gebracht, in der sein Abstand zu der leeren Batterie der Länge der Batteriehebevorrichtung entspricht.
• Die Batteriehebevorrichtung wird aktiviert oder montiert, beispielsweise werden zwei Hebetraversen in den Gabelträger eingehängt.
• Die Batteriehebevorrichtung wird in die Batteriewechselposition angehoben oder abgesenkt.
• Die leere Batterie wird mit der Batteriehebevorrichtung verbunden, etwa eingehängt.
• Die leere Batterie wird - etwa durch Anheben des Gabelträgers, an dem die Batteriehebevorrichtung befestigt ist - bis in Wechselposition angehoben.
• Der Schubmast wird bis in seine Grundposition verlagert.
• Die leere Batterie wird abgesenkt, bevorzugt bis zum Boden.
• Die leere Batterie wird von der Batteriehebevorrichtung mechanisch abgekoppelt.
• Der Schubmaststapler wird - nach wie vor von der leeren Batterie versorgt - zu einer vollen Batterie gefahren, bevorzugt in Längsfahrt, das Adapterkabel mit Federzug gleicht bevorzugt diese Längsfahrt aus.
• Das Adapterkabel wird von der leeren Batterie auf die volle Batterie umgesteckt.
• Die volle Batterie wird mit der Batteriehebevorrichtung gekoppelt und auf den Schubmaststapler gehoben.
• Die volle Batterie wird von der Batteriehebevorrichtung mechanisch entkoppelt.
• Die Batteriehebevorrichtung wird demontiert oder deaktiviert, beispielsweise werden zwei Hebetraversen ausgehängt.

The battery change method of a reach truck with battery lifter preferably has one or more or all of the following steps:

• The reach truck is moved to a battery replacement station.
• The reach mast is brought into a position in which its distance from the empty battery corresponds to the length of the battery lift device.
• The battery lifting device is activated or mounted, for example, two lifting trays are hung in the fork carriage.
• The battery lifter is raised or lowered to the battery changing position.
• The empty battery is connected to the battery lifting device, suspended about.
• The empty battery is raised - for example, by lifting the fork carriage to which the battery lifting device is attached - to change position.
• The reach mast is moved to its basic position.
• The empty battery is lowered, preferably to the ground.
• The empty battery is mechanically decoupled from the battery lifting device.
• The reach truck is - still powered by the empty battery - driven to a full battery, preferably in longitudinal travel, the adapter cable with spring balancer preferably compensates for this longitudinal travel.
• The adapter cable is switched from the empty battery to the full battery.
• The full battery is coupled to the battery lift and lifted onto the reach truck.
• The full battery is mechanically decoupled from the battery lift.
• The battery lifting device is disassembled or deactivated, for example, two lifting traverses are posted.

With this method, no additional crane or forklift is necessary with advantage. It is also preferred no further person next to the driver necessary. The driver prefers to descend exactly four times from the reach truck. It is a safe operation by the driver anyway well-known operations lifting the fork carriage and moving the drawbar of the reach truck ensured. It is achieved a low-cost simple solution in which no special stationary battery receptacle, such as roller conveyor, is required.

• Mit dem Schubmaststapler an eine stationäre Rollenbahn fahren.
• Verlagern des Schubmastes für den Batteriewechsel in eine Position, in der sein Abstand zu der Batterie der Länge der Schubtraverse entspricht.
• Andocken des Schubmaststaplers an die stationäre Rollenbahn. Hierbei wird bevorzugt die Batteriesicherung am Schubmaststapler durch die Betätigungslasche an der stationären Rollenbahn geöffnet.
• Verschwenken - insbesondere hydraulisch - der Schubtraverse von einer Verstauposition, die zumindest im Wesentlichen senkrecht ist in eine zumindest im Wesentlichen horizontale Arbeitsposition.
• Schieben der leeren Batterie mittels des Schubmasts aus dem Batteriefach des Schubmaststaplers auf die stationäre Rollenbahn.
• Verschwenken der Schubtraverse in die Verstauposition, bevorzugt hydraulisch.
• Fahren des Schubmaststaplers unter Bezug von elektrischer Energie aus der leeren Batterie zu einer vollen Batterie, vorzugsweise in Längsfahrt, das Adapterkabel mit Federseilzug gleicht bevorzugt die Vergrößerung des Abstandes zwischen dem übrigen Schubmaststapler und der leeren Batterie aus.
• Umstecken des Adapterkabels von der leeren Batterie auf eine volle Batterie.
• Ziehen der vollen Batterie auf den Schubmaststapler. Dieses Ziehen kann - insbesondere nach einem erneuten Verlagern der Schubtraverse in die Arbeitsposition - mithilfe der Schubtraverse geschehen. Die Schubtraverse kann also auch als Schub- und Zugtraverse bezeichnet werden.

The battery change method of a reach truck with push beam preferably requires a stationary battery receptacle, such as a roller conveyor. It preferably has one or more or all of the following steps:

• Drive to a stationary roller conveyor with the reach truck.
• Relocating the push mast for the battery change in a position in which its distance from the battery corresponds to the length of the push beam.
• Dock the reach truck to the stationary roller conveyor. In this case, the battery backup on the reach truck is preferably opened by the actuating tab on the stationary roller conveyor.
• Pivoting - in particular hydraulically - the push beam from a stowed position which is at least substantially perpendicular in an at least substantially horizontal working position.
• Push the empty battery by means of the push mast from the battery compartment of the reach truck onto the stationary roller conveyor.
• Swiveling the push bar in the stowed position, preferably hydraulically.
• Driving the reach truck with reference to electrical energy from the empty battery to a full battery, preferably in longitudinal travel, the adapter cable with spring cable preferably compensates for the increase in the distance between the other reach truck and the empty battery.
• Plug the adapter cable from the dead battery to a full battery.
• Pull the full battery onto the reach truck. This pulling can - especially after a renewed displacement of the push bar in the working position - done using the push bar. The push bar can therefore also be referred to as a push and pull beam.

In this method, preferably no additional crane or forklift is necessary. It is preferred that no other person next to the driver necessary. The driver preferably only descends once from the reach truck. It is a safe operation by the driver already well-known displacement of the drawbar of the reach truck achieved, and a comfortable and quick battery change.

Fig. 1

eine seitliche Schnittdarstellung eines ersten Ausführungsbeispiels eines Schubmaststaplers entlang der Linie I - I in Figur 3;

Fig. 2.

eine Ansicht wie in Fig. 1, jedoch mit montierter Batteriehebevorrichtung;

Fig. 3

eine Ansicht eines ersten Ausführungsbeispiels eines Schubmaststaplers mit Blick von oben;

Fig. 3a

eine allein dargestellte Batteriehebevorrichtung;

Fig. 4

eine Ansicht wie in Fig. 2, jedoch mit bereits teilweise angehobener Batterie;

Fig. 5

eine Ansicht wie in Fig. 2, jedoch mit bereits vollständig angehobener und aus dem Batteriefach verlagerter Batterie;

Fig. 6

eine Ansicht wie in Fig. 2, jedoch mit bereits aus dem Batteriefach verlagerter und auf dem Boden abgesetzter Batterie;

Fig. 7

eine Ansicht des ersten Ausführungsbeispiels des Schubmaststaplers mit Blick von oben;

Fig. 8

eine Frontalansicht eines erfindungsgemäßen Schubmaststaplers;

Fig. 9

eine seitliche Querschnittsdarstellung eines anderen Ausführungsbeispiels eines Schubmaststaplers;

Fig. 10

eine Ansicht wie in Fig. 9, jedoch mit bereits aktiviertem Verlagerungsmittel;

Fig. 11

eine Ansicht wie in Fig. 10, jedoch mit bereits von dem Schubmaststapler heruntergeschobener Batterie;

Fig. 12

eine Ansicht wie in Fig. 11, jedoch mit bereits deaktivierter Verlagerungseinrichtung;

Fig. 13

eine Ansicht von oben auf das in Fig. 9 gezeigte Ausführungsbeispiel.

The invention will now be explained in more detail with reference to embodiments shown in the drawings. Show it:

Fig. 1

a side sectional view of a first embodiment of a reach truck along the line I - I in FIG. 3 ;

Fig. 2.

a view like in Fig. 1 , but with battery lifter installed;

Fig. 3

a view of a first embodiment of a reach truck with a view from above;

Fig. 3a

a battery lifting device shown alone;

Fig. 4

a view like in Fig. 2 , but with already partially raised battery;

Fig. 5

a view like in Fig. 2 but with the battery already fully raised and out of the battery compartment;

Fig. 6

a view like in Fig. 2 but with the battery already displaced from the battery compartment and dropped on the floor;

Fig. 7

a view of the first embodiment of the reach truck with a view from above;

Fig. 8

a front view of a reach truck according to the invention;

Fig. 9

a side cross-sectional view of another embodiment of a reach truck;

Fig. 10

a view like in Fig. 9 , but with already activated displacement means;

Fig. 11

a view like in Fig. 10 but with battery already pushed down by the reach truck;

Fig. 12

a view like in Fig. 11 but with already deactivated displacement device;

Fig. 13

a view from the top of the in Fig. 9 shown embodiment.

The FIGS. 1 to 7 show an embodiment of a reach truck comprising a battery lifting device 3, which is mountable to the reach 1 and can be removed after a battery change. The battery lifting device 3 is formed in the illustrated embodiment by two cantilever beams, which can be referred to as battery lifting trusses 4, 4 '. The reach truck 100 has a fork carriage 13 which fixes the likewise present carrying fork 14 to the reach 1. The battery lifting device 3 can be mounted on the fork carriage 13 and is therefore approximately in Fig. 2 shown mounted state in the same way up and down, as the support fork 14. Fig. 2 also shows that the battery lifting device 3 on the opposite of the support fork 14 Side of the mast 1 so on the back R of the mast 1 is mountable. Such as Fig. 3a shows, the battery lifting device is bendable and has a free end. At the free end of the battery lifting device, a coupling means 11 is arranged, which is designed as a hook 11 a. Such as Fig. 2 shows, the battery 2, a negative feedback means 12 which is formed as an eyelet 12a.

Fig. 1 shows the reach 1 in its basic position. Its distance A from the rear side S of the reach truck is greater than the dimension B of the battery 2 arranged behind it in this direction. The created thereby, not passed by the reach 1 area C of the reach truck is available in this way for the battery compartment and frame elements of the reach truck. The length L of the battery lifting device is greater than the distance A of the push mast 1 in its basic position from the rear side S of the reach truck.

Means 7 are provided for maintaining the electrical connection between the remainder reach truck 100 and the empty battery 2a, which enable a process of the remainder reach truck 100 by itself with the empty battery 2a arranged outside the reach truck 100. These means include, for example Fig. 8 shows, an electrical line 8, which can be dispensed and retrieved by means of a spring cable 9. When arranged on the reach truck battery 2, the battery connecting the battery with the rest of the reach truck electrical line goes up and down again. At maximum distance of the remaining reach truck from the battery connected to it, the electrical line is at least substantially horizontal.

The FIGS. 1 to 7 show a first embodiment of the method in which the battery 2 is displaced during the battery change using the push mast. In the case of the method with reach truck with battery lifting device shown in these figures, the reach truck is first moved to a battery changing station at which a full battery 2b is present. Then the mast for the battery change is brought into a position in which the Battery lifting device is easy to install (see Figures 1 and 2 and then the battery lifter is mounted (see Fig. 2 )). Thereafter, the battery lifting device is placed in battery changing positions, in which, if necessary, the fork carriage on which the battery lifting device is arranged, is raised or lowered and the reach 1 is moved if necessary. Thereafter, the empty battery 2a is connected to the battery lifting device 3, and then the empty battery 2a is raised to the change position (see FIG Fig. 4 , in which this change position is not quite reached). Finally, the reach is shifted to its basic position, like Fig. 5 shows. The empty battery is then lowered, in the illustrated embodiment to the ground, see FIGS. 5 and 6 , Subsequently, a mechanical uncoupling of the empty battery from the battery lifting device, wherein an electrical connection to the reach truck is maintained by the electric line 8 continues. Subsequently, the remaining reach truck 100 is driven to the full battery 2b, preferably in longitudinal travel, the adapter cable 8 compensated using the spring cable 9 in this case the increasing distance of the empty battery 2a to the rest of the reach truck 100. Thereafter, the adapter cable is transferred from the empty battery to the full battery. The full battery is then coupled to the lifting device 3 and placed on the reach truck. The full battery is then decoupled from the battery lift and this is deactivated. It takes place after changing the adapter cable from the empty battery to the full battery in the FIGS. 1 to 6 shown process in reverse order, now with the full battery 2b.

That in the FIGS. 9 to 13 shown embodiment of the reach truck is different from that in the FIGS. 1 to 8 shown embodiment of the reach truck in that the battery compartment is not accessible from above, but from the side. In addition, the includes in the FIGS. 9 to 13 Reach truck shown a battery pad 5, which allows a shift of the battery 2, without raising this previously. The battery support 5 has in the embodiment shown for this purpose rollers 5a. Instead of a battery lifting device has in the FIGS. 9 to 13 Reach truck shown on a displacement means 6, by means of which the battery 2 by means of the push mast 1 in horizontal direction is displaceable. In the illustrated embodiment, the displacement means 6 by two push bars 6a, 6a 'is formed, which are mounted on the reach 1 and activated for changing the battery. The displacement means is permanently mounted in the illustrated embodiment of the reach truck and for activation of an at least substantially vertical stowed position (see Fig. 9 ) into an at least substantially horizontal working position ( Fig. 10 ), in which it protrudes on the back R of the mast 1 in the direction of the rear side S of the reach truck. The in the FIGS. 9 to 13 Reach truck shown is part of a battery replacement system with a stationary battery receptacle, which is designed as a roller conveyor 10 and which is non-displaceable in the vertical direction. The battery support 15 of the stationary battery holder is arranged at the same height as the battery support of the reach truck. The stationary roller conveyor 10 has a battery support 15 which, like the battery support of the in the FIGS. 9 to 13 Reach truck shown allows a shift of the battery, without raising it before. For this purpose, the battery support 15 of the stationary roller conveyor 10 is equipped with rollers 15a.

In order to ensure a secure attachment of the battery 2 on the reach truck 100, has in the FIGS. 9 to 13 Reach truck shown battery backup means (not explicitly shown in the figures) on, as well as means for releasing these battery backup means. The stationary roller conveyor 15 has means 16 for actuating the means for releasing the battery securing means. In the exemplary embodiment shown, these are actuating tabs 16a.

In the in the FIGS. 9 to 13 shown Reach truck battery change method with reach truck with displacement means the battery 2 is also displaced during the battery change using the pusher mast 1. In the method shown in these figures, the reach truck 100 is first moved to the stationary roller conveyor (see Fig. 9 ). Then the reach 1 for battery replacement is moved to a position in which its distance D to the battery 2 of the length E of the displacement means 6, with this protrudes in its working position on the back R of the push mast 1 corresponds. thereupon is docked with the reach truck 100 to the stationary roller conveyor 15. In this case, the battery backup on the reach truck is opened by the actuating means 16 on the stationary roller conveyor. The battery displacement means 6, is then brought into the working position (see Fig. 10 ). The empty battery 2a is then pushed by moving the push mast 1 on the stationary roller conveyor 15 ( Fig. 11 ). The displacement means 6 is then pivoted to its stowed position and the rest of the reach truck is driven with reference to electrical energy from the empty battery 2a to a full battery 2b, preferably in longitudinal travel. The compensation of this increasing distance of the rest of the reach truck to the electrically connected to him empty battery, as in the in the FIGS. 1 to 7 shown embodiment compensated by an electrical line 8 and a spring cable 9. Subsequently, the electrical line is changed over from the empty battery 2a to the full battery 2b. The full battery is pushed onto the reach truck or pulled by means of the relocator 6 returned to working position.

LIST OF REFERENCE NUMBERS

100

Reach truck

1

Reach

2

battery

2a

empty battery

2 B

full battery

3

Battery lifter

3a, 3a '

cantilever beam

4

Battery lifting traverse

5

battery edition

5a

roll

6

displacement means

6a, 6a '

thrust Traverse

7

Means for maintaining the electrical connection

8th

electrical line

9

spring cable

10

stationary roller conveyor

11

coupling agent

11a

hook

12

Negative feedback means

12a

eyelet

13

Gabelträger

14

carrying fork

15

battery edition

16

actuating means

16a

operating tabs

A

distance

B

Dimension of the battery

C

Range of the reach truck

D

distance

e

Length of the push beam

L

Length of the battery lifting device

R

Rear of the drawpipe

S

Rear of the reach truck

Claims (10)

Reach truck (100) with a push mast (1), an electric drive and a battery (2), characterized in that the battery (2) by means of the push mast (1) is replaceable. Reach truck according to claim 1, characterized in that the reach truck (100) comprises a battery lifting device (3) which is mounted either on the reach (1) and can be activated for changing the battery or is mounted on the reach (1) for changing the battery and after a battery change is removable. Reach truck according to claim 2, characterized in that the battery lifting device (3) on the back (R) of the push mast (1) is mounted or mounted. Reach truck according to claim 2 or 3, characterized in that the battery lifting device (3) comprises one or two Kragträger (3a, 3a '). Reach truck according to claim 1, characterized in that the reach truck (100) comprises a battery support (5), which allows a displacement of the battery, and a displacement means (6), by means of which the battery (2) by means of the push mast (1) in horizontal Direction is displaced, wherein the displacement means (6) is either mounted on the mast (1) and can be activated for changing the battery or for battery replacement on the mast (1) can be mounted and after a battery change is disassembled. Battery replacement system with a reach truck (100) according to claim 5, with a stationary battery receptacle, in particular a roller conveyor (10), wherein the battery support (15) of the stationary battery receptacle is vertically displaceable. Reach truck according to one of claims 1 to 5, characterized in that the reach truck (100) comprises means (7) for maintaining the electrical connection between the remainder reach truck (100) and the battery (2), which is a method of the remaining reach truck ( 100) on its own power in outside of the reach truck (100) arranged battery (2) allow. Reach truck according to claim 7, characterized in that the means (7) comprise an electrical line (8) which can be dispensed and retrieved using a spring cable (9). Reach truck battery change method with a reach truck (100) according to one of claims 1 to 5, 7 and 8, characterized in that with the reach truck (100) electrically connected battery (2) by means of the push mast (1) is displaced. A method according to claim 9, characterized in that with the reach truck (100) electrically connected battery (2) outside of the other reach truck (100) is arranged and the rest of the reach truck (100) is subsequently moved, while maintaining the electrical connection to this battery (2).

Images