Reach truck

Abstract

The invention relates to a reach truck with a vehicle frame (1), wherein the vehicle frame (1) has two wheel arms (2a, 2b) arranged at a distance from one another in the vehicle transverse direction (Q) and a cross member (3) connecting the wheel arms (2a; 2b). The vehicle frame (1) of the reach truck is provided with at least two fastening interfaces (BS1, BS2) to which different additional weights (ZG1, ZG2) can be detachably attached.

Description

[0001] The invention relates to a reach truck with a vehicle frame, wherein the vehicle frame has two wheel arms arranged at a distance from one another in the transverse direction of the vehicle and a cross member connecting the wheel arms.

[0002] Reach trucks typically have a U-shaped vehicle frame (viewed from above), which has two support arms arranged at a distance from each other in the transverse direction of the vehicle and a cross member connecting the support arms. A drive wheel is arranged on the cross member of the vehicle frame, and a load wheel is arranged at each end of the two support arms of the vehicle frame. The vehicle frame is also equipped with an electric drive, an electric steering drive, a hydraulic system, and a braking system. A reach mast is arranged on the vehicle frame between the two support arms and can be moved in the longitudinal direction of the vehicle. A traction battery is also arranged on the vehicle frame. The traction battery supplies the drive, the steering drive, and the hydraulic system with electrical energy.In known reach trucks, the traction battery is arranged in the vehicle's longitudinal direction between a drive section, in which the travel drive, the steering drive and the hydraulic system are located, and the reach mast.

[0003] The load capacity of reach trucks is determined by the weight of the reach truck and the size and thus the weight of the traction battery used. There is a conflict of objectives regarding the size of the traction battery: While a wide and heavy traction battery increases the reach truck's load capacity, a wide and heavy traction battery increases the reach truck's overall length, requiring a larger working aisle width between two rows of racks in a racking system. However, to enable a racking system with a high storage density, customers require the reach truck to have the smallest possible working aisle width.

[0004] Increasingly, reach trucks are using high-performance energy storage devices with higher energy density than lead-acid batteries as traction batteries, such as batteries with lithium-based cell technology such as lithium-ion batteries or lithium iron phosphate batteries, instead of lead-acid batteries as traction batteries. However, such a high-performance energy storage device as a traction battery can be constructed significantly lighter and narrower than a lead-acid battery as a traction battery while maintaining the same energy content. When using such a high-performance energy storage device as a traction battery, it is therefore necessary to equip the reach truck with additional weight to achieve a high load capacity.However, there is the problem that different customers have different requirements for the load capacity of their reach truck, so the additional weight must have a different weight depending on the customer requirements.

[0005] The object of the present invention is to provide a reach truck of the type mentioned above which can be easily adapted to customer requirements with regard to its load capacity.

[0006] This object is achieved according to the invention in that the vehicle frame of the reach truck is provided with at least two fastening interfaces to which different additional weights, in particular at least two different additional weights, can be detachably fastened.

[0007] The invention is based on the realization that high-performance energy storage devices can be constructed significantly lighter and more compactly than traction batteries, so that an additional weight must be accommodated in the reach truck to compensate for the lighter weight of the high-performance energy storage device in order to achieve a high load-bearing capacity of the reach truck. In order to be able to easily meet the various customer requirements for different load-bearing capacities and thus different vehicle weights of the reach trucks, the vehicle frame of the reach truck is provided with at least two fastening interfaces to which at least two different additional weights can be releasably attached in a modular manner.The at least two attachment interfaces on the vehicle frame thus make it possible to modularly attach different additional weights, for example, additional weights that differ in weight, to the attachment interfaces and thus accommodate them in the reach truck. This allows the vehicle weight of the reach truck to be increased in a simple and modular manner by attaching one or more additional weights to the corresponding attachment interfaces and adapted to the customer's load-bearing capacity requirements. The invention thus provides a system for increasing the load-bearing capacity of reach trucks by accommodating and attaching modular additional weights in the reach truck.

[0008] With at least two mounting interfaces, different positions for the additional weight can also be easily defined.

[0009] The modular attachment of the various additional weights to the corresponding attachment interfaces of the vehicle frame thus makes it easy to increase the vehicle weight of a reach truck and the use of a high-performance energy storage unit as a traction battery in a modular manner, thus improving the tipping stability of the reach truck and increasing the load capacity of the reach truck and adapting it to different customer requirements.

[0010] By using a high-performance energy storage unit as a traction battery and the modular attachment of different additional weights, the relevant properties of reach trucks, namely the load capacity and the working aisle width, can still be configured and defined independently of one another.

[0011] According to a preferred embodiment of the invention, the at least two fastening interfaces are formed on the wheel arms of the vehicle frame, in particular on each upper side of the wheel arm. The wheel arms offer a simple way to attach appropriate additional weights to increase the vehicle weight and thus increase the load capacity of the reach truck.

[0012] According to a preferred embodiment of the invention, a first fastening interface is formed on each of the wheel arms, to which a first additional weight can be releasably fastened, and a second fastening interface is formed on each of the wheel arms, to which a second additional weight can be releasably fastened. This makes it possible, in a modular manner, according to a first possibility, to fasten a first additional weight only to the first fastening interface, or according to a second possibility, to fasten a second additional weight only to the second fastening interface, or according to a third possibility, to fasten a first additional weight to the first fastening interface and a second additional weight to the second fastening interface.This allows the vehicle weight to be increased modularly in a simple manner by attaching appropriate additional weights in order to adapt the reach truck to different customer requirements and different load capacities.

[0013] According to a preferred embodiment of the invention, the first additional weight is designed as a traction battery carrier on which a traction battery of the reach truck rests. From a mechanical perspective and to ensure a favorable center of gravity of the reach truck, it is advantageous to position the additional weight as low as possible in the reach truck. With the functional integration and the design of the additional weight as a traction battery carrier on which the traction battery rests, the lighter weight of the high-performance energy storage device can be compensated for, providing the required additional weight in the reach truck for increased load-bearing capacity. This additional weight can also be arranged at a low point in the reach truck for a favorable center of gravity of the reach truck.

[0014] According to a preferred embodiment of the invention, the traction battery carrier is arranged in the transverse direction of the vehicle and detachably fastened to the first fastening interfaces of the two wheel arms, in particular by means of screw connections. A detachable fastening makes it possible to attach the additional weight designed as a traction battery carrier to the two wheel arms in a simple and cost-effective manner if necessary. If the additional weight designed as a traction battery carrier is attached to the two wheel arms, for example by means of screw connections, the additional weight designed as a traction battery carrier can also be used to easily stiffen the vehicle frame.

[0015] According to a preferred embodiment of the invention, the traction battery carrier is mounted on the upper side of the wheel arms. This makes it easy for a push carriage of the push-lift mast, guided on the wheel arms, to move beneath the additional weight designed as a traction battery carrier.

[0016] According to a preferred embodiment of the invention, the traction battery carrier is provided with lateral horizontal flange plates with which the traction battery carrier can be releasably attached to the first attachment interfaces of the two wheel arms. Such flange plates allow the additional weight designed as a traction battery carrier to be easily releasably attached to the two wheel arms.

[0017] According to a preferred embodiment of the invention, the traction battery carrier forms a support surface on its upper side, on which the traction battery rests. This allows a traction battery of the reach truck to be easily arranged and supported on the additional weight designed as a traction battery carrier. The support surface can be formed by a plate-like support surface or by a roller conveyor with rollers arranged on the upper side of the traction battery carrier.

[0018] According to a preferred embodiment of the invention, the traction battery carrier is provided with at least one fastening flange to which at least one additional weight module can be attached to the traction battery carrier. This allows one or more additional weight modules to be easily attached to the additional weight designed as a traction battery carrier, if necessary for greater tipping stability and / or a high load-bearing capacity of the reach truck. The traction battery carrier thus forms a modular system to which one or more additional weight modules can be attached in a modular manner. This results in further advantages, since this modularity of the traction battery carrier makes it easy to provide different additional weights with the traction battery carrier.

[0019] According to a preferred embodiment of the invention, the at least one fastening flange is arranged on the top and / or front side of the traction battery carrier. This allows one or more additional weight modules to be releasably attached to the traction battery carrier in a space-saving manner.

[0020] According to a preferred embodiment of the invention, the additional weight module has a tower-like shape and is attached to the top of the traction battery carrier. The tower-like additional weight module is preferably arranged laterally next to the traction battery, which stands on the traction battery carrier. This allows for a space-saving arrangement of the tower-like additional weight module.

[0021] According to a preferred embodiment of the invention, the additional weight module has a plate-like shape and is attached to the front of the traction battery carrier. When attached to the traction battery carrier, the plate-like additional weight module preferably forms a vertical bulkhead or protective wall that extends in the transverse direction of the vehicle and is arranged in front of the traction battery arranged on the traction battery carrier.

[0022] According to a preferred embodiment of the invention, the second additional weight is designed as at least one wheel arm weight. With such wheel arm weights, the vehicle weight of the reach truck and thus the load capacity of the reach truck can be easily increased without increasing the overall length of the reach truck and thus the aisle width.

[0023] According to a preferred embodiment of the invention, the wheel arm weight is detachably attached to the second attachment interface of the wheel arm, in particular by means of screw connections. A detachable attachment, for example by means of screw connections, enables the attachment of corresponding wheel arm weights to the two wheel arms in a simple and cost-effective manner.

[0024] According to a preferred embodiment of the invention, the wheel arm weight is arranged in the longitudinal direction of the vehicle. This makes it easy to provide a wheel arm weight with a high weight without increasing the width of the reach truck.

[0025] According to a preferred embodiment of the invention, the wheel arm weight is mounted on the top of the wheel arm. This allows for easy attachment of a corresponding wheel arm weight to the corresponding wheel arm.

[0026] According to a preferred embodiment of the invention, the wheel arm weight has a tower-like shape and / or a plate-like shape.

[0027] According to a preferred embodiment of the invention, the vehicle frame is provided with a drive wheel mount for a drive wheel, and the wheel arms are each provided with a load wheel mount for a load wheel, with the traction battery carrier being arranged in the vehicle's longitudinal direction between the drive wheel mount and the load wheel mounts. This allows an advantageous arrangement and position of the additional weight designed as a traction battery carrier and the traction battery standing on the additional weight to be achieved in a simple manner in the vehicle's longitudinal direction between the drive wheel mount and the load wheel mounts.

[0028] According to a preferred embodiment of the invention, the fastening interfaces comprise screw connections. The screw connections can be designed as threaded bolts attached to the wheel arms or threaded nuts attached to the wheel arms, or as receiving holes for fastening screws formed on the wheel arms.

[0029] According to a preferred embodiment of the invention, the additional weights and / or the at least one additional weight module are each designed as a cast component. Preferably, the additional weights and / or the at least one additional weight module are each made of cast iron or cast steel. Constructing the additional weights or the additional weight module as a cast component makes it easy to provide a high weight for the additional weights or the additional weight modules while maintaining a high degree of design freedom and allowing easy adaptation of the geometry and shape of the additional weight or the additional weight module.

[0030] According to a preferred embodiment of the invention, the traction battery is designed as a high-performance energy storage device, in particular a high-performance battery, or as a fuel cell system. Using one or more additional weights that can be releasably attached to the vehicle frame in a modular manner, the lighter weight of a traction battery designed as a high-performance energy storage device can be easily compensated for, and a load-bearing capacity and tipping stability of the reach truck can be provided that is tailored to customer requirements. A high-performance energy storage device according to the invention is, in particular, an energy storage device whose energy density is higher than the energy density of conventional lead-acid batteries, which lies in the range of 37 to 43 Wh / kg.A high-performance energy storage device according to the invention can be a high-performance battery, for example a battery with lithium-based cell technology, in particular a lithium-ion battery or a lithium iron phosphate battery, or a fuel cell system.

[0031] The term "traction battery" is not intended to be restrictive, but also extends to energy storage systems that are generally suitable for converting chemical energy into electrical energy. This includes both conventional batteries and accumulators as well as fuel cell systems.

[0032] The invention further relates to a system comprising a reach truck according to the invention with a vehicle frame, wherein the vehicle frame of the reach truck is provided with at least two fastening interfaces to which different additional weights, in particular at least two different additional weights, can be releasably fastened, and a set of at least two different additional weights. The system has the advantages already mentioned for the reach truck. With a set of at least two different additional weights, which differ in weight and can be releasably fastened to corresponding fastening interfaces of the vehicle frame in a modular manner, the vehicle weight of the reach truck can be easily increased and adapted to the customer's load-bearing capacity requirements.

[0033] According to a preferred embodiment of the invention, the set of additional weights comprises an additional weight designed as a traction battery carrier and an additional weight designed as at least one wheel arm weight, in particular a set of at least two different wheel arm weights. This enables a simple, modular adaptability of the vehicle weight of the reach truck, in which, according to a first option, only the traction battery carrier is attached to the vehicle frame, or according to a second option, only wheel arm weights are attached to the vehicle frame, or according to a third option, the traction battery carrier and the wheel arm weights are attached to the vehicle frame.

[0034] According to a preferred embodiment of the invention, the set of additional weights comprises at least one additional weight module, in particular a set of at least two different additional weight modules, which can be releasably fastened to one of the additional weights, in particular to the traction battery carrier. This further increases the modular adaptability of the vehicle weight of the reach truck, since according to a first option, the traction battery carrier can be provided alone, according to a second option, the traction battery carrier can be provided with a first additional weight module, according to a third option, the traction battery carrier can be provided with a second additional weight module, or according to a fourth option, the traction battery carrier can be provided with a first additional weight module and a second additional weight module.

[0035] The invention has a number of advantages.

[0036] The reach truck according to the invention makes it possible in a simple manner to increase the vehicle weight of the reach truck in a modular manner by attaching one or more additional weights to the corresponding attachment interfaces and to adapt it to the customer's load capacity requirements.

[0037] If the overall length of the reach truck and thus the aisle width are to be kept small, only wheel arm weights can be detachably attached to the wheel arms to increase the vehicle weight.

[0038] If the overall length of the reach truck and thus the aisle width are of secondary importance to the customer, a traction battery carrier can be used as additional weight, which may be fitted with an additional weight module at the front and thus between the traction battery and the reach mast.

[0039] The modular attachment of the various additional weights makes it easy to improve the tipping stability and increase the load capacity of the reach truck.

[0040] The modular attachment of the various additional weights also makes it easy to configure and define the load capacity of the reach truck and the aisle width required by the reach truck independently of each other.

[0041] The design of the additional weights or the additional weight modules as cast components allows for a high degree of design freedom and adaptability of the geometry of the additional weights or the additional weight modules.

[0042] The design of the additional weight as a traction battery carrier results in advantageous functional integration.

[0043] If the additional weight designed as a traction battery carrier is attached to the two wheel arms by means of screw connections, the additional weight can also be used to stiffen the vehicle frame.

[0044] The design of the additional weights as cast components allows for a high degree of design freedom and easy adaptability of the geometry of the additional weights.

[0045] Further advantages and details of the invention will be explained in more detail with reference to the embodiment shown in the schematic figures. Figure 1 shows a vehicle frame of a reach truck according to the invention in a perspective view, Figure 2 shows an additional weight of the Figure 1 in an enlarged view, Figure 3 a section of the Figure 1with a traction battery arranged on the additional weight designed as a traction battery carrier, Figure 4 the additional weight designed as a traction battery carrier of the Figures 1 to 3 with an additional weight module, Figure 5 the additional weight designed as a traction battery carrier of the Figure 4 with another additional weight module, Figure 6 the additional weight of the Figure 5 in an installed state in the reach truck, Figure 7 a reach truck according to the Figure 6 with additional wheel arm weights and Figure 8the reach truck according to the Figure 7 with additional wheel arm weights.

[0046] In the Figure 1 a vehicle frame 1 of a reach truck according to the invention is shown.

[0047] The vehicle frame 1 has a U-shaped cross-section in plan view with two wheel arms 2a, 2b arranged at a distance from one another in the vehicle transverse direction Q and a cross member 3 connecting the two wheel arms 2a, 2b, which comprises a floor plate 4.

[0048] The two wheel arms 2a, 2b are each provided with a guide rail 5a, 5b on the inner sides facing each other, in which a push-lift mast (not shown in detail) is arranged so as to be displaceable in the longitudinal direction L of the vehicle.

[0049] At the front end areas of the wheel arms 3a, 3b there is a load wheel holder 6a, 6b on which a load wheel (not shown in detail) can be rotatably arranged.

[0050] On the cross member 3, a drive wheel holder 7 is formed centrally in the vehicle transverse direction Q, on which a drive wheel steerable about a vertical steering axis can be arranged.

[0051] The vehicle frame 1 of the reach truck is provided with at least two fastening interfaces BS1, BS2, to which - as described below with reference to the further Figures 2 to 8 as can be seen - different additional weights ZG1, ZG2 can be detachably attached.

[0052] The at least two fastening interfaces BS1, BS2 are formed on the two wheel arms 2a, 2b of the vehicle frame 1. In the illustrated embodiment, the fastening interfaces BS1, BS2 are each formed on an upper side of the wheel arm 2a, 2b.

[0053] A first fastening interface BS1 is formed on each of the two wheel arms 2a, 2b, to which a first additional weight ZG1 can be fastened.

[0054] A second fastening interface BS2 is formed on each of the two wheel arms 2a, 2b, to which at least one second additional weight ZG2 can be fastened.

[0055] In the illustrated embodiment, the first additional weight ZG1 is designed as a traction battery carrier 10, on which - as shown in the Figure 3 is shown in more detail - a traction battery 12 of the reach truck stands up.

[0056] For this purpose, the traction battery carrier 10 has a vertically arranged upper side OS, which forms a contact surface on which, as shown in the Figure 3 As shown, the traction battery 12 of the reach truck is standing up.

[0057] The traction battery 12 is preferably designed as a high-performance energy storage device. The high-performance energy storage device has, in particular, an energy density that is higher than the energy density of a conventional lead-acid battery, which is in the range of 37 to 43 Wh / kg. The high-performance energy storage device is preferably designed as a high-performance battery, for example, a battery with lithium-based cell technology, in particular a lithium-ion battery or a lithium iron phosphate battery, or as a fuel cell system.

[0058] The traction battery carrier 10 forming the first additional weight ZG1 is arranged with its longitudinal extension in the vehicle transverse direction Q and is detachably fastened to each of the two wheel arms 2a, 2b. In the illustrated embodiment, the traction battery carrier 10 forming the first additional weight ZG1 is placed on the upper sides of the two wheel arms 2a, 2b and fastened to the two wheel arms 2a, 2b at the first fastening interfaces BS1 of the two wheel arms 2a, 2b.

[0059] The traction battery carrier 10 forming the first additional weight ZG1 is arranged in the vehicle longitudinal direction L between the drive wheel holder 7 and the two load wheel holders 6a, 6b.

[0060] The traction battery carrier 10 forming the first additional weight ZG1 is - as in connection with the Figures 2 and 3can be seen in more detail - for detachable attachment to the two wheel arms 2a, 2b at the right and left end area, each with a horizontal flange plate 15a, 15b, with which the traction battery carrier 10 is detachably attached to the first attachment interfaces BS1 of the two wheel arms 2a, 2b.

[0061] In the illustrated embodiment, the flange plates 15a, 15b are each provided with at least one through-bore 16a, 16b, which form screwing points for a screw connection 17, with which the additional weight 11 designed as a traction battery carrier 10 is fastened to the corresponding wheel arm 2a, 2b.

[0062] The first fastening interface BS1 on the two wheel arms 2a, 2b is preferably formed by receiving bores (not shown in detail) into which the screw connections 17 can be screwed.

[0063] The additional weight ZG1 designed as a traction battery carrier 10 is preferably designed as a cast component and consists, for example, of cast iron or cast steel.

[0064] The additional weight ZG1 designed as a traction battery carrier 10 is provided with at least one fastening flange 20, 25, to which - as shown in the Figures 4 to 6 is shown in more detail - an additional weight module ZM1, ZM2 can be attached to the additional weight ZG1.

[0065] In the illustrated embodiment, the fastening flange 20 is mounted on the upper side OS of the additional weight ZG1 on the Figures 1 to 6 right side. In the illustrated embodiment, the fastening flange 20 is formed by at least one receiving bore 22, which forms a screwing point for a screw connection 23 with which the additional weight module ZM1 can be screwed to the additional weight 11.

[0066] In the Figure 4The additional weight ZG1 is shown with an additional weight module ZM1 screwed to the fastening interface 20.

[0067] In the illustrated embodiment, the mounting flange 25 is arranged on the front side of the additional weight ZG1. In the illustrated embodiment, the mounting flange 25 is formed by at least one receiving bore 26, which forms a screwing point for a screw connection 27 with which the additional weight module ZM2 can be screwed to the additional weight ZG1.

[0068] In the Figure 5 The additional weight ZG1 is shown with an additional weight module ZM1 screwed to the fastening interface 20 and with an additional weight module ZM2 screwed to the fastening interface 25.

[0069] In the illustrated embodiment, the additional weight module ZM1 has a tower-like shape.

[0070] In the illustrated embodiment, the additional weight module ZM2 has a plate-like shape and, when screwed to the fastening interface 25, forms a vertical front wall or protective wall arranged in front of the traction battery 12, which extends in the vehicle transverse direction Q.

[0071] The additional weight module ZM1 and / or the additional weight module ZM2 are preferably each designed as a cast component. The additional weight module ZM1 and / or the additional weight module ZM2 are each made of cast iron or cast steel, for example.

[0072] In the Figure 6 the vehicle frame 2 is equipped with an additional weight ZG1 attached to the two wheel arms 2a, 2b in accordance with Figure 5 which is equipped with the additional weight modules ZM1 and ZM2.

[0073] The Figure 7shows the vehicle frame 1 of the reach truck, wherein a second additional weight ZG2 designed as a wheel arm weight 30 is attached to the second fastening interfaces BS2 of the two wheel arms 2a, 2b.

[0074] In the illustrated embodiment, the wheel arm weight 30 is placed on the top side of the corresponding wheel arm 2a or 2b and is releasably fastened to the second fastening interface BS2 of the corresponding wheel arm 2a or 2b.

[0075] The wheel arm weight 30 is arranged in the vehicle's longitudinal direction L.

[0076] The wheel arm weight 30 has a width which essentially corresponds to the width of the wheel arm 2a or 2b, so that the wheel arm weight 30 placed on the corresponding wheel arm 2a or 2b does not protrude from the dimensions of the wheel arm 2a or 2b in the vehicle transverse direction Q.

[0077] The wheel arm weight 30 has a tower-like shape. In the illustrated embodiment, the wheel arm weight 30 is cuboid-shaped with a height that essentially corresponds to the height of the additional weight module ZM2. To improve the driver's view of the tips of the wheel arms 2a, 2b, on which the load wheels are arranged, the upper side of the wheel arm weights 30 is beveled toward the front in the illustrated embodiment.

[0078] The Figure 8 show the vehicle frame 1 of the reach truck, wherein a second additional weight ZG2 formed by two wheel arm weights 30, 31 is attached to the second fastening interfaces BS2 of the two wheel arms 2a, 2b.

[0079] The wheel arm weights 30 of the Figure 8 correspond to the wheel arm weights 30 Figure 7 .

[0080] In the illustrated embodiment, the wheel arm weight 31 is placed on the top side of the corresponding wheel arm 2a or 2b and is releasably fastened to the second fastening interface BS2 of the corresponding wheel arm 2a or 2b.

[0081] The wheel arm weight 31 is arranged in the vehicle longitudinal direction L and is arranged between the wheel arm weight 30 and the load wheel holder 6a or 6b of the corresponding wheel arm 2a or 2b.

[0082] The wheel arm weight 31 has a width which essentially corresponds to the width of the wheel arm 2a or 2b, so that the wheel arm weight 31 placed on the corresponding wheel arm 2a or 2b does not protrude from the dimensions of the wheel arm 2a or 2b in the vehicle transverse direction Q.

[0083] The wheel arm weight 31 has a plate-like shape. In the illustrated embodiment, the wheel arm weight 31 is cuboid-shaped with a height that essentially corresponds to the height of the load wheel mount 6a or 6b, so that the wheel arm weights 31 mounted on the wheel arms 2a, 2b do not restrict a driver's view of the tips of the wheel arms 2a, 2b, where the load wheels are arranged.

[0084] The second fastening interface BS2 on the two wheel arms 2a, 2b is preferably formed by receiving bores (not shown in detail) into which screw connections fastening the wheel arm weights 30 and 31 can be screwed.

[0085] The additional weight ZG2, designed as wheel arm weight 30 or 31, is preferably designed as a cast component and consists, for example, of cast iron or cast steel.

[0086] A system according to the invention comprises a reach truck with the vehicle frame 1 described above, which is provided with at least two fastening interfaces BS1, BS2 to which different additional weights ZG1, ZG2 can be detachably fastened, and a set of at least two different additional weights ZG1, ZG2.

[0087] The set of additional weights ZG1, ZG2 comprises the additional weight ZG1 designed as a traction battery carrier 10 and the additional weight ZG2, which comprises at least one wheel arm weight 30, 31, in particular a set of at least two different wheel arm weights 30, 31.

[0088] The set of additional weights ZG1, ZG2 preferably further comprises at least one additional weight module ZM1, ZM2, in particular a set of at least two different additional weight modules ZM1, ZM2, which can be detachably fastened to one of the two additional weights ZG1, ZG2, in particular to the additional weight ZG1 formed on the traction battery carrier 10, in particular by means of screw connections 23, 27.

[0089] In the system according to the invention, the additional weight ZG1 designed as a traction battery carrier 10 preferably has a weight in the range of 400 kg to 500 kg.

[0090] In the system according to the invention, the additional weight module ZM1 preferably has a weight in the range of 100 kg.

[0091] In the system according to the invention, various additional weight modules ZM2 with different plate thicknesses can be provided. The additional weight module ZM2 preferably has a weight in the range of 200 kg to 300 kg.

[0092] In the system according to the invention, the wheel arm weight 30 preferably has a weight in the range of 350 kg to 450 kg.

[0093] In the system according to the invention, the wheel arm weight 31 preferably has a weight in the range of 40 kg to 70 kg.

[0094] In the reach truck according to the invention, only the additional weight ZG1 or only the additional weight ZG2 can be releasably attached to the support arms 2a, 2b. The additional weight ZG1 can be installed without the additional weight modules ZM1, ZM2, or with one of the additional weight modules ZM1 or ZM2, or with both additional weight modules ZM1 and ZM2. As additional weight ZG2, only one of the support arm weights 30 or 31 can be attached to each support arm 2a, 2b, or both support arm weights 30, 31 can be attached to each support arm 2a, 2b.

[0095] If the overall length of the reach truck and thus the working aisle width are to be kept small due to customer requirements, only the wheel arm weights 30 and / or 31 can be detachably attached to the wheel arms 2a, 2b in order to increase the vehicle weight and thus the load capacity of the reach truck.

[0096] If the overall length of the reach truck and thus the working aisle width are of secondary importance to the customer, a traction battery carrier 10 can be used as additional weight ZG1, which may be provided with the additional weight module ZM2 at the front and thus between the traction battery 12 and the reach mast.

Claims

1. A reach truck with a vehicle frame (1), wherein the vehicle frame (1) has two wheel arms (2a, 2b) arranged spaced apart from one another in the vehicle transverse direction (Q) and a cross member (3) connecting the wheel arms (2a; 2b), characterized in that the vehicle frame (1) of the reach truck is provided with at least two fastening interfaces (BS1, BS2) to which different additional weights (ZG1, ZG2) can be detachably fastened.

2. Reach truck according to claim 1, characterized in that the at least two fastening interfaces (BS1, BS2) are formed on the wheel arms (2a, 2b) of the vehicle frame (1), in particular each on an upper side of the wheel arm (2a, 2b).

3. Reach truck according to claim 1 or 2, characterized in thata first fastening interface (BS1) is formed on each of the wheel arms (2a, 2b), to which a first additional weight (ZG1) can be releasably fastened, and a second fastening interface (BS2) is formed on each of the wheel arms (2a, 2b), to which a second additional weight (ZG2) can be releasably fastened.

4. Reach truck according to one of claims 1 to 3, characterized in that the first additional weight (ZG1) is designed as a traction battery carrier (10) on which a traction battery (12) of the reach truck stands.

5. Reach truck according to claim 4, characterized in that the traction battery carrier (10) is arranged in the vehicle transverse direction (Q) and is detachably fastened to the first fastening interfaces (BS1) of the wheel arms (2a, 2b).

6. Reach truck according to claim 4 or 5, characterized in that the traction battery carrier (10) is placed on top of the wheel arms (2a, 2b).

7. Reach truck according to one of claims 4 to 6, characterized in that the traction battery carrier (10) is provided with lateral horizontal flange plates (15a, 15b) with which the traction battery carrier (10) can be detachably fastened to the first fastening interfaces (BS1) of the wheel arms (2a, 2b).

8. Reach truck according to one of claims 4 to 7, characterized in that the traction battery carrier (10) forms a support surface on the upper side (OS) on which the traction battery (12) stands.

9. Reach truck according to one of claims 4 to 8, characterized in that the traction battery carrier (10) is provided with at least one fastening flange (20; 25) to which at least one additional weight module (ZM1; ZM2) can be fastened to the traction battery carrier (10).

10. Reach truck according to claim 9, characterized in thatthe at least one fastening flange (20; 25) is arranged on the top and / or on the front of the traction battery carrier (10).

11. Reach truck according to claim 9 or 10, characterized in that the additional weight module (ZM1) has a tower-like shape and is attached to the top of the traction battery carrier (10).

12. Reach truck according to claim 9 or 10, characterized in that the additional weight module (ZM2) has a plate-like shape and is attached to the front of the traction battery carrier (10).

13. Reach truck according to one of claims 1 to 12, characterized in that the second additional weight (ZG2) is designed as at least one wheel arm weight (30; 31).

14. Reach truck according to claim 13, characterized in that the wheel arm weight (30; 31) is releasably attached to the second attachment interface (BS2) of the wheel arm (2a; 2b).

15. Reach truck according to claim 13 or 14, characterized in thatthe wheel arm weight (30; 31) is arranged in the vehicle's longitudinal direction (L).

16. Reach truck according to one of claims 13 to 15, characterized in that the wheel arm weight (30; 31) is placed on the top side of the wheel arm (2a; 2b).

17. Reach truck according to one of claims 13 to 16, characterized in that the wheel arm weight (30; 31) has a tower-like shape and / or a plate-like shape.

18. Reach truck according to one of claims 1 to 17, characterized in that the vehicle frame (2) is provided with a drive wheel receptacle (7) for a drive wheel and the wheel arms (2a; 2b) are each provided with a load wheel receptacle (6a; 6b) for a load wheel, wherein the traction battery carrier (10) is arranged in the vehicle longitudinal direction (L) between the drive wheel receptacle (7) and the load wheel receptacles (6a; 6b).

19. Reach truck according to one of claims 1 to 18, characterized in that the fastening interfaces (BS1, BS2) comprise screw connections (17; 23; 27).

20. Reach truck according to one of claims 1 to 19, characterized in that the additional weights (ZG1, ZG2) and / or the at least one additional weight module (ZM 1, ZM2) are each designed as a cast component.

21. Reach truck according to one of claims 4 to 20, characterized in that the traction battery (12) is designed as a high-performance energy storage device, in particular a high-performance battery, in particular a lithium-ion battery or lithium iron phosphate battery, or as a fuel cell system.

22. System comprising a reach truck with a vehicle frame (1) according to one of claims 1 to 21, wherein the vehicle frame (1) of the reach truck is provided with at least two fastening interfaces (BS1, BS2) to which different additional weights (ZG1, ZG2) can be releasably fastened, and a set of at least two different additional weights (ZG1, ZG2).

23. System according to claim 22, characterized in thatthe set of additional weights (ZG1, ZG2) comprises an additional weight (ZG1) designed as a traction battery carrier (10) and an additional weight (ZG2) designed as at least one wheel arm weight (30; 31), in particular a set of at least two different wheel arm weights (30, 31).

24. System according to claim 22 or 23, characterized in that the set of additional weights (ZG1, ZG2) comprises at least one additional weight module (ZM1; ZM2), in particular a set of at least two different additional weight modules (ZM1, ZM2).

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