Forward forklift

Abstract

The invention relates to a reach truck having a vehicle frame (1), the vehicle frame (1) having two wheel arms (2a, 2b) which are arranged at a distance from one another in the vehicle transverse direction (Q), and a frame (3) which connects the wheel arms (2a; 2b). According to the invention, the frame (1) of the reach truck is provided with at least two fastening connections (BS1, BS2), to which different additional weights (ZG1, ZG2) can be detachably fastened.

Description

Technical Field

[0001] The present invention relates to a reach truck having a vehicle frame, wherein the vehicle frame has two wheel arms arranged at a distance from each other in the vehicle transverse direction and a cross beam connecting the wheel arms. Background Art

[0002] A reach truck generally has a vehicle frame that is U-shaped in a top view, the vehicle frame having wheel arms arranged at a distance from each other in the vehicle transverse direction and a cross beam connecting the wheel arms. Drive wheels are arranged on the cross beam of the vehicle frame, and a load wheel is respectively arranged at the end of each of the two wheel arms of the vehicle frame. The vehicle frame is also provided with an electric travel drive, an electric steering drive, a hydraulic device, and a braking device. A movable-lifting rod is movably arranged on the vehicle frame in the vehicle longitudinal direction between the two wheel arms. In addition, a traction battery is also arranged on the vehicle frame. The traction battery supplies electrical energy to the travel drive, the steering drive, and the hydraulic device. In a known reach truck, the traction battery is arranged in the vehicle longitudinal direction between the drive part and the movable-lifting rod, and the travel drive, the steering drive, and the hydraulic device are arranged in the drive part.

[0003] The load capacity of a reach truck is determined by the vehicle weight of the reach truck and the size and thus the weight of the traction battery used. There is a target conflict regarding the size of the traction battery, because although a wide and heavy traction battery can increase the load capacity of the reach truck, a wide and heavy traction battery will cause an increase in the total length of the reach truck. As a result, the reach truck requires a larger working aisle width between two rows of shelves in a shelf system. However, in order to be able to implement a shelf system with a high storage density, it is desired by the customer side that the reach truck requires as small a working aisle width as possible.

[0004] In reach trucks, high-performance energy storage devices are increasingly used as traction batteries instead of lead-acid batteries, and their energy density is higher than that of lead-acid batteries. For example, batteries with lithium-based battery technology such as lithium-ion batteries or lithium iron phosphate batteries are used as traction batteries. However, such high-performance energy storage devices as traction batteries can be constructed significantly lighter and narrower than lead-acid batteries as traction batteries when they have the same energy content. Therefore, when using such high-performance energy storage devices as traction batteries, there is a need to equip the reach truck with additional weights in order to achieve a high load capacity of the reach truck. However, there is a problem here that different customers have different requirements for the load capacity of their reach trucks, such that the additional weights must have different weights according to customer requirements. Summary of the Invention

[0005] The task underlying the present invention is to provide a reach truck of the type described at the beginning, which can be simply matched to customer requirements in terms of load capacity.

[0006] According to the invention, this task is solved in that the vehicle frame of the reach truck is provided with at least two fixing interfaces on which different additional weights, in particular at least two different additional weights, can be detachably fixed.

[0007] The invention starts from the recognition that high-performance energy storage devices, as traction batteries, can be constructed significantly lighter and more compact, such that additional weights must be placed in the reach truck, which compensate for the lighter weight of the high-performance energy storage device in order to achieve the high load capacity of the reach truck. In order to be able to simply meet the different customer requirements for different load capacities and thus different vehicle weights of the reach truck, according to the invention, the vehicle frame of the reach truck is provided with at least two fixing interfaces on which at least two different additional weights can be detachably fixed in a modular manner. Thus, at least two fixing interfaces on the vehicle frame enable different additional weights, for example additional weights that differ in terms of weight, to be modularly fixed to the fixing interfaces and thus placed in the reach truck, such that the vehicle weight of the reach truck can be increased in a simple and modular manner by fixing one or more additional weights to the respective fixing interfaces and the load capacity requirements of the customer can be matched. Thus, the invention provides a system for increasing the load capacity in a reach truck by placing and fixing modular additional weights in the reach truck.

[0008] With the aid of at least two fixing interfaces, different positions for the additional weights can also be defined in a simple manner.

[0009] Thus, the modular fixing of different additional weights on the respective fixing interfaces of the vehicle frame enables the vehicle weight of the reach truck to be modularly increased in a simple manner in the reach truck and when using a high-performance energy storage device as a traction battery, and thus the tipping stability of the reach truck to be improved, the load capacity of the reach truck to be increased and different customer requirements to be matched.

[0010] Furthermore, by using a high-performance energy storage device as a traction battery and modularly fixing different additional weights, the relevant characteristics of the reach truck, namely the load capacity and the aisle width, can be configured and defined independently of one another.

[0011] According to a preferred configuration of the invention, at least two fixing interfaces are constructed on the wheel arms of the vehicle frame, in particular each on the upper side of the wheel arms. The wheel arms provide a simple possibility for mounting the respective additional weights in order to increase the vehicle weight and thus the load capacity of the reach truck.

[0012] According to a preferred configuration of the present invention, first fixing interfaces are respectively formed on the wheel arms, and the first additional weight can be detachably fixed to the first fixing interfaces. And second fixing interfaces are respectively formed on the wheel arms, and the second additional weight can be detachably fixed to the second fixing interfaces. Thus, in a modular manner, only the first additional weight can be fixed to the first fixing interface according to the first possibility, or only the second additional weight can be fixed to the second fixing interface according to the second possibility, or the first additional weight can be fixed to the first fixing interface and the second additional weight can be fixed to the second fixing interface according to the third possibility. Thus, the vehicle weight can be modularly increased in a simple manner by fixing the corresponding additional weights, so as to make the reach truck match different customer requirements and different load capacities.

[0013] According to a preferred configuration of the present invention, the first additional weight is configured as a traction battery carrier, and the traction battery of the reach truck stands on the traction battery carrier. From a mechanical perspective and for the center of gravity position of the reach truck, it is beneficial to position the additional weight as low as possible in the reach truck. By integrating and configuring the function of the additional weight as a traction battery carrier (on which the traction battery stands), on the one hand, the lighter weight of the high-performance energy storage device can be compensated and the required additional weight can be provided in the reach truck to increase the load capacity. On the other hand, the additional weight is arranged at a low position of the reach truck for the favorable center of gravity position of the reach truck.

[0014] According to a preferred configuration of the present invention, the traction battery carrier is arranged in the vehicle transverse direction and is detachably fixed to the first fixing interfaces of the two wheel arms, especially by means of a threaded connection. The detachable fixing can be realized in a simple and low-cost manner to fix the additional weight configured as a traction battery carrier to the two wheel arms when necessary. If the additional weight configured as a traction battery carrier is fixed to the two wheel arms by means of a threaded connection, for example, the additional weight configured as a traction battery carrier can also be used to simply reinforce the vehicle frame.

[0015] According to a preferred configuration of the present invention, the traction battery carrier is placed on the upper side of the wheel arms. Thus, it can be simply realized that the moving slider guided on the wheel arms of the moving-lifting rod can move under the additional weight configured as a traction battery carrier.

[0016] According to a preferred configuration of the present invention, the traction battery carrier is provided with lateral horizontal flange plates, and the traction battery carrier can be detachably fixed to the first fixing interfaces of the two wheel arms by means of the lateral horizontal flange plates. By means of such flange plates, the additional weight configured as a traction battery carrier can be simply detachably fixed to the two wheel arms.

[0017] According to a preferred configuration of the present invention, the traction battery carrier forms a support surface on the upper side for the traction battery. Thus, the traction battery of the reach truck can be arranged and held in a simple manner on the additional weight configured as the traction battery carrier. The support surface can be composed of a plate-shaped support surface or a roller track with rollers arranged on the upper side of the traction battery carrier.

[0018] According to a preferred configuration of the present invention, the traction battery carrier is provided with at least one fixing flange on which at least one additional weight module can be fixed to the traction battery carrier. Thus, one or more additional weight modules can be fixed to the additional weight configured as the traction battery carrier in a simple manner when necessary, provided that this is required for the higher tipping stability and / or high load capacity of the reach truck. Therefore, the traction battery carrier forms a modular system on which one or more additional weight modules can be installed in a modular manner. This results in further advantages because different weights of additional weights can be provided by the traction battery carrier in a simple manner through this modularization of the traction battery carrier.

[0019] According to a preferred configuration of the present invention, at least one fixing flange is arranged on the upper side and / or the front side of the traction battery carrier. Thus, one or more additional weight modules can be detachably fixed to the traction battery carrier in a space-saving manner.

[0020] According to a preferred configuration of the present invention, the additional weight module has a tower-like shape and is fixed on the upper side of the traction battery carrier. Preferably, the tower-like additional weight module is arranged laterally beside the traction battery standing on the traction battery carrier. This enables a space-saving arrangement of the tower-like additional weight module.

[0021] According to a preferred configuration of the present invention, the additional weight module has a plate-like shape and is fixed on the front side of the traction battery carrier. In the state of being installed on the traction battery carrier, the plate-like additional weight module preferably forms a vertical end wall or protective wall that extends in the vehicle transverse direction and is arranged in front of the traction battery arranged on the traction battery carrier.

[0022] According to a preferred configuration of the present invention, the second additional weight is configured as at least one wheel arm weight. With the help of such a wheel arm weight, the vehicle weight of the reach truck and thus the load capacity of the reach truck can be increased in a simple manner without increasing the total length of the reach truck and thus the working aisle width.

[0023] According to a preferred configuration of the present invention, the wheel arm weight is detachably fixed to the second fixing interface of the wheel arm, in particular by means of a threaded connection. For example, the detachable fixing by means of a threaded connection can fix the corresponding wheel arm weight to the two wheel arms in a simple and cost-effective manner.

[0024] According to a preferred configuration of the present invention, the wheel arm weights are arranged in the longitudinal direction of the vehicle. In this way, it is possible to simply provide wheel arm weights with a high weight without increasing the width of the reach truck.

[0025] According to a preferred configuration of the present invention, the wheel arm weights are placed on the upper side of the wheel arm. In this way, the corresponding wheel arm weights can be simply mounted on the corresponding wheel arms.

[0026] According to a preferred configuration of the present invention, the wheel arm weights have a tower shape and / or a plate shape.

[0027] According to a preferred configuration of the present invention, the vehicle frame is provided with drive wheel receiving parts for the drive wheels, and the wheel arms are respectively provided with load wheel receiving parts for the load wheels, wherein the traction battery carrier is arranged in the longitudinal direction of the vehicle between the drive wheel receiving part and the load wheel receiving part. In this way, it is possible to simply achieve a favorable arrangement and position of the additional weight configured as the traction battery carrier and the traction battery standing on the additional weight between the drive wheel receiving part and the load wheel receiving part in the longitudinal direction of the vehicle.

[0028] According to a preferred configuration of the present invention, the fixing interface includes a threaded connection. The threaded connection can be configured as a bolt fixed to the wheel arm or a nut fixed to the wheel arm, or as a receiving hole for a fixing screw on the wheel arm.

[0029] According to a preferred configuration of the present invention, the additional weight and / or at least one additional weight module are respectively configured as castings. Preferably, the additional weight and / or at least one additional weight module are respectively made of cast iron or cast steel. Implementing the additional weight or the additional weight module as a casting can simply provide a high weight of the additional weight or the additional weight module with a high degree of configuration freedom and simple adaptability of the geometry and shape of the additional weight or the additional weight module.

[0030] According to a preferred configuration of the present invention, the traction battery is configured as a high-performance energy storage device, in particular a high-performance battery or a fuel cell system. By means of one or more modular additional weights that can be detachably fixed to the vehicle frame, the relatively low weight of the traction battery configured as a high-performance energy storage device can be compensated in a simple manner, and the load capacity and tipping stability of the reach truck that meet the customer requirements can be provided. According to the present invention, the high-performance energy storage device is in particular an energy storage device with an energy density in the range of 37 to 43 Wh / kg, which is higher than that of a traditional lead-acid battery. According to the present invention, the high-performance energy storage device can be, for example, a battery with lithium-based battery technology, in particular a lithium-ion battery or a lithium iron phosphate battery, or a fuel cell system.

[0031] The term traction battery should not be understood restrictively in particular, but can also extend to energy storage systems generally suitable for providing electrical energy from chemical energy. This should be understood not only as traditional batteries or accumulators but also as fuel cell systems.

[0032] The present invention also relates to a system, which includes a reach truck with a vehicle frame according to the present invention and a set of at least two different additional weights, wherein the vehicle frame of the reach truck is provided with at least two fixing interfaces, and different additional weights, in particular at least two different additional weights, can be detachably fixed to the fixing interfaces. The system has the advantages already described for the reach truck. By means of a set of at least two different additional weights (which differ in weight and can be detachably fixed to the corresponding fixing interfaces of the vehicle frame in a modular manner), the vehicle weight of the reach truck can be increased in a simple manner and the load capacity requirements of the customer can be met.

[0033] According to a preferred configuration of the present invention, the set of additional weights includes an additional weight configured as a traction battery carrier and an additional weight configured as at least one wheel arm weight, in particular a set of at least two different wheel arm weights. Thereby, the modular adaptability of the vehicle weight of the reach truck can be achieved in a simple manner, wherein according to the first possibility only the traction battery carrier is fixed to the vehicle frame, or according to the second possibility only the wheel arm weights are fixed to the vehicle frame, or according to the third possibility both the traction battery carrier and the wheel arm weights are fixed to the vehicle frame.

[0034] According to a preferred configuration of the present invention, the set of additional weights includes at least one additional weight module, in particular a set of at least two different additional weight modules, which can be detachably fixed to one of the additional weights, in particular to the traction battery carrier. Thereby, the modular adaptability of the vehicle weight of the reach truck is further improved, because according to the first possibility, the traction battery carrier can be set separately; according to the second possibility, the traction battery carrier can be provided with a first additional weight module; according to the third possibility, the traction battery carrier can be provided with a second additional weight module; or according to the fourth possibility, the traction battery carrier can be provided with a first additional weight module and a second additional weight module.

[0035] The present invention has a series of advantages.

[0036] The reach truck according to the present invention can simply increase the vehicle weight of the reach truck in a modular manner by fixing one or more additional weights to the corresponding fixing interfaces and match the customer's load capacity requirements.

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

[0038] If the total length of the reach truck and thus the working aisle width are of secondary importance to the customer, the traction battery carrier can be used as an additional weight, and the traction battery carrier is provided with an additional weight module on the front side and thus between the traction battery and the moving-lifting rod if necessary.

[0039] The modular installation of different additional weights can simply improve the tipping stability of the reach truck and increase the load capacity.

[0040] The modular installation of different additional weights can also simply configure and define the load capacity of the reach truck and the working aisle width required by the reach truck independently of each other.

[0041] Implementing the additional weight or the additional weight module as a casting can achieve a high degree of configurability and adaptability of the geometry of the additional weight or the additional weight module.

[0042] Beneficial functional integration is achieved by implementing the additional weight as a traction battery carrier.

[0043] If the additional weight made as a traction battery carrier is fixed to the two wheel arms by means of a threaded connection, the additional weight can also be used to reinforce the vehicle frame with the additional weight.

[0044] Implementing the additional weight as a casting can achieve a high degree of configurability and adaptability of the geometry of the additional weight. Brief Description of the Drawings

[0045] The additional advantages and details of the present invention are elaborated in detail according to the embodiments shown in the schematic diagram. Shown herein are:

[0046] Figure 1 : A perspective view of the vehicle frame of a reach forklift according to the present invention,

[0047] Figure 2 : Figure 1 An enlarged view of the additional weight configured as a traction battery carrier,

[0048] Figure 3 : A partial view of Figure 1 with a traction battery arranged on the additional weight configured as a traction battery carrier,

[0049] Figure 4 : Figures 1 to 3 The additional weight configured as a traction battery carrier with an additional weight module,

[0050] Figure 5 : Figure 4 The additional weight configured as a traction battery carrier with another additional weight module,

[0051] Figure 6 : Figure 5 The additional weight in the installed state of the reach forklift,

[0052] Figure 7 : Figure 6 A reach forklift according to

[0053] Figure 8 with additional wheel arm weights, and Figure 7 A reach forklift according to Detailed Description of the Preferred Embodiment

[0054] In Figure 1 is shown the vehicle frame 1 of a reach forklift according to the present invention.

[0055] The vehicle frame 1 has a cross-section that is U-shaped in a top view, which has two wheel arms 2a, 2b arranged at intervals in the vehicle transverse direction Q and a cross beam 3 connecting the two wheel arms 2a, 2b, and the cross beam includes a bottom plate 4.

[0056] On the inner sides facing each other, the two wheel arms 2a, 2b are respectively provided with guide rails 5a, 5b, and a moving-lifting rod (not shown in detail) is arranged movably in the guide rails 5a, 5b along the vehicle longitudinal direction L.

[0057] At the front end regions of the wheel arms 2a, 2b, load wheel receiving parts 6a, 6b are respectively arranged, and load wheels (not shown in detail) can be rotatably arranged on the load wheel receiving parts.

[0058] On the cross beam 3, a drive wheel receiving part 7 is formed in the middle in the vehicle transverse direction Q, and a drive wheel that can be steered about a vertical steering axis can be arranged on the drive wheel receiving part.

[0059] The vehicle frame 1 of the reach truck is provided with at least two fixed interfaces BS1, BS2, as will be described below according to additional Figures 2 to 8 As can be seen, different additional weights ZG1, ZG2 can be detachably fixed to the fixed interfaces.

[0060] At least two fixed interfaces BS1, BS2 are constructed on the two wheel arms 2a, 2b of the vehicle frame 1. In the illustrated embodiment, the fixed interfaces BS1, BS2 are respectively constructed on the upper sides of the wheel arms 2a, 2b.

[0061] A first fixed interface BS1 is respectively constructed on the two wheel arms 2a, 2b, and a first additional weight ZG1 can be fixed to the first fixed interface.

[0062] A second fixed interface BS2 is respectively constructed on the two wheel arms 2a, 2b, and a second additional weight ZG2 can be fixed to the second fixed interface.

[0063] In the illustrated embodiment, the first additional weight ZG1 is constructed as a traction battery carrier 10, as Figure 3 shown in detail, the traction battery 12 of the reach truck stands on the traction battery carrier.

[0064] As Figure 3 shown, the traction battery carrier 10 has an upper surface OS vertically located above for this purpose, and this upper surface forms a support surface on which the traction battery 12 of the reach truck stands.

[0065] The traction battery 12 is preferably constructed as a high-performance energy storage device. The high-performance energy storage device especially has an energy density higher than that of a traditional lead-acid battery in the range of 37 to 43 Wh / kg. The high-performance energy storage device is preferably constructed as a high-performance battery, such as a battery with lithium-based battery technology, especially a lithium-ion battery or a lithium iron phosphate battery, or is constructed as a fuel cell system.

[0066] The traction battery carrier 10 forming the first additional weight ZG1 is arranged in the vehicle transverse direction Q with its longitudinal extension and is detachably fixed to the two wheel arms 2a, 2b respectively. 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 is fixed to the first fixing interfaces BS1 of the two wheel arms 2a, 2b on the two wheel arms 2a, 2b.

[0067] The traction battery carrier 10 forming the first additional weight ZG1 is arranged between the drive wheel receiving part 7 and the two road wheel receiving parts 6a, 6b in the vehicle longitudinal direction L.

[0068] As can be seen more specifically in conjunction with Figure 2 and Figure 3 The traction battery carrier 10 forming the first additional weight ZG1 is respectively provided with horizontal flange plates 15a, 15b in the right end region and the left end region for detachably fixing to the two wheel arms 2a, 2b. The traction battery carrier 10 is detachably fixed to the first fixing interfaces BS1 of the two wheel arms 2a, 2b by means of the flange plates.

[0069] In the illustrated embodiment, the flange plates 15a, 15b are respectively provided with at least one through hole 16a, 16b, and these through holes form screwing points for the threaded connection 17. The additional weight 11 constructed as the traction battery carrier 10 is fixed to the corresponding wheel arms 2a, 2b by means of the threaded connection.

[0070] The first fixing interfaces BS1 on the two wheel arms 2a, 2b are preferably formed by receiving holes not shown in detail, and the threaded connection 17 can be screwed into the receiving holes.

[0071] The additional weight ZG1 constructed as the traction battery carrier 10 is preferably constructed as a casting, for example, made of cast iron or cast steel.

[0072] The additional weight ZG1 constructed as the traction battery carrier 10 is provided with at least one fixing flange 20, 25. As shown in detail in Figures 4 to 6 the additional weight modules ZM1, ZM2 can be respectively fixed to the additional weight ZG1.

[0073] In the illustrated embodiment, the fixing flange 20 is arranged on the upper side OS of the additional weight ZG1 on the Figures 1 to 6 right side. In the illustrated embodiment, the fixing flange 20 is formed by at least one receiving hole 22, and the receiving hole forms a screwing point for the threaded connection 23. The additional weight module ZM1 can be tightened on the additional weight 11 by means of the threaded connection.

[0074] In Figure 4Shown is the additional weight ZG1 with the additional weight module ZM1 screwed onto the fixed interface 20.

[0075] In the illustrated embodiment, the fixed flange 25 is arranged on the front side of the additional weight ZG1. In the illustrated embodiment, the fixed flange 25 consists of at least one receiving hole 26, which forms a screwing point for the threaded connection 27, by means of which the additional weight module ZM2 can be screwed onto the additional weight ZG1.

[0076] In Figure 5 Shown is the additional weight ZG1 with the additional weight module ZM1 screwed onto the fixed interface 20 and the additional weight module ZM2 screwed onto the fixed interface 25.

[0077] In the illustrated embodiment, the additional weight module ZM1 has a tower-like shape.

[0078] In the illustrated embodiment, the additional weight module ZM2 has a plate-like shape and forms a vertical end wall or protective wall arranged in front of the traction battery 12 in the state of being screwed onto the fixed interface 25, and this end wall or protective wall extends in the vehicle transverse direction Q.

[0079] The additional weight module ZM1 and / or the additional weight module ZM2 are preferably each constructed as a casting. The additional weight module ZM1 and / or the additional weight module ZM2 are each made of, for example, cast iron or cast steel.

[0080] In Figure 6 Shown is the vehicle frame 1 with the additional weight ZG1 fixed to two wheel arms 2a, 2b according to Figure 5 , and the additional weight is provided with the additional weight modules ZM1 and ZM2.

[0081] Figure 7 Shown is the vehicle frame 1 of a reach truck, wherein second additional weights ZG2 constructed as wheel arm weights 30 are respectively fixed to the second fixed interfaces BS2 of two wheel arms 2a, 2b.

[0082] In the illustrated embodiment, the wheel arm weights 30 are respectively placed on the upper sides of the corresponding wheel arms 2a or 2b and are detachably fixed to the second fixed interfaces BS2 of the corresponding wheel arms 2a or 2b.

[0083] The wheel arm weights 30 are respectively arranged in the vehicle longitudinal direction L.

[0084] The wheel arm weights 30 respectively have a width substantially corresponding to the width of the wheel arms 2a or 2b, such that the wheel arm weights 30 placed on the corresponding wheel arms 2a or 2b do not project beyond the dimensions of the wheel arms 2a or 2b in the vehicle transverse direction Q.

[0085] The wheel arm weight 30 has a tower-like shape. In the illustrated embodiment, the wheel arm weights 30 are each implemented as a cuboid, and its height substantially corresponds to the height of the additional weight module ZM2. In the illustrated embodiment, in order for the driver to better observe the tops of the wheel arms 2a and 2b where the load wheels are arranged, the upper sides of the wheel arm weights 30 each extend forward and slope downward.

[0086] Figure 8 The vehicle frame 1 of the reach truck is shown, wherein the second additional weight ZG2 composed of two wheel arm weights 30, 31 is respectively fixed on the second fixing interfaces BS2 of the two wheel arms 2a, 2b.

[0087] Figure 8 The wheel arm weight 30 of Figure 7 corresponds to the wheel arm weight 30 of

[0088] In the illustrated embodiment, the wheel arm weights 31 are respectively placed on the upper sides of the corresponding wheel arms 2a or 2b and are detachably fixed on the second fixing interfaces BS2 of the corresponding wheel arms 2a or 2b.

[0089] The wheel arm weights 31 are respectively arranged along the vehicle longitudinal direction L and are arranged between the wheel arm weight 30 and the load wheel receiving parts 6a or 6b of the corresponding wheel arms 2a or 2b.

[0090] The wheel arm weights 31 each have a width substantially corresponding to the width of the wheel arms 2a or 2b, so that the wheel arm weights 31 placed on the corresponding wheel arms 2a or 2b do not protrude beyond the dimensions of the wheel arms 2a or 2b in the vehicle transverse direction Q.

[0091] The wheel arm weights 31 have a plate-like shape. In the illustrated embodiment, the wheel arm weights 31 are each implemented as a cuboid, and its height substantially corresponds to the height of the load wheel receiving parts 6a or 6b, so that the wheel arm weights 31 placed on the wheel arms 2a or 2b do not limit the driver's view of the tops of the wheel arms 2a and 2b where the load wheels are arranged.

[0092] The second fixing interfaces BS2 on the two wheel arms 2a, 2b are preferably constituted by receiving holes not shown in detail, and the threaded connections for fixing the wheel arm weights 30 or 31 can be screwed into the receiving holes.

[0093] The additional weight ZG2 configured as the wheel arm weight 30 or 31 is preferably configured as a casting, for example, made of cast iron or cast steel.

[0094] The system according to the present invention includes a reach truck having the above-mentioned vehicle frame 1 and a set of at least two different additional weights ZG1, ZG2, and the vehicle frame is provided with at least two fixing interfaces BS1, BS2, and different additional weights ZG1, ZG2 can be detachably fixed on the fixing interfaces.

[0095] The set of additional weights ZG1, ZG2 includes an additional weight ZG1 and an additional weight ZG2. The additional weight ZG1 is configured as a traction battery carrier 10, and the additional weight ZG2 includes at least one wheel arm weight 30, 31, in particular a set of at least two different wheel arm weights 30, 31.

[0096] The set of additional weights ZG1, ZG2 preferably further includes at least one additional weight module ZM1, ZM2, in particular a set of at least two different additional weight modules ZM1, ZM2. These two additional weight modules can be detachably fixed to one of the two additional weights ZG1, ZG2, in particular to the additional weight ZG1 forming the traction battery carrier 10, in particular by means of screw connections 23, 27.

[0097] In the system according to the invention, the additional weight ZG1 configured as a traction battery carrier 10 preferably has a weight in the range between 400 kg and 500 kg.

[0098] In the system according to the invention, the additional weight module ZM1 preferably has a weight in the range of 100 kg.

[0099] 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 between 200 kg and 300 kg.

[0100] In the system according to the invention, the wheel arm weights 30 preferably each have a weight in the range between 350 kg and 450 kg.

[0101] In the system according to the invention, the wheel arm weights 31 preferably each have a weight in the range between 40 kg and 70 kg.

[0102] In the reach truck according to the invention, only the additional weight ZG1 or only the additional weight ZG2 can be detachably fixed to the wheel arms 2a, 2b. Here, the additional weight ZG1 is without the additional weight modules ZM1, ZM2 or is equipped with one of the additional weight modules ZM1 or ZM2, or is equipped with two additional weight modules ZM1 and ZM2. As the additional weight ZG2, only one of the wheel arm weights 30 or 31 can be fixed to each wheel arm 2a, 2b, or two wheel arm weights 30, 31 can be respectively fixed to each wheel arm 2a, 2b.

[0103] 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 fixed to the wheel arms 2a, 2b in order to increase the vehicle weight and thus the load capacity of the reach truck.

[0104] If the overall length of the reach truck and thus the working aisle width are of secondary importance to the customer, the traction battery carrier 10 can be used as additional ballast ZG1, which, if necessary, has an additional ballast module ZM2 on the front side and thus between the traction battery 12 and the moving-lifting rod.

Claims

1. A reach truck having a vehicle frame (1), wherein: The vehicle frame (1) comprises two wheel arms (2a, 2b) arranged at a distance from each other in the transverse direction (Q) of the vehicle and a crossbeam (3) connecting the wheel arms (2a; 2b), and is characterized in that the vehicle frame (1) of the reach truck is provided with at least two fixing interfaces (BS1, BS2), on which different additional weights (ZG1, ZG2) can be detachably fixed.

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

3. The reach truck according to claim 1 or 2, characterized in that: A first fixing interface (BS1) is respectively constructed on the wheel arms (2a, 2b), and a first additional weight (ZG1) can be detachably fixed on the first fixing interface; and a second fixing interface (BS2) is respectively constructed on the wheel arms (2a, 2b), and a second additional weight (ZG2) can be detachably fixed on the second fixing interface.

4. The reach truck according to any 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. The reach truck according to claim 4, characterized in that: The traction battery carrier (10) is arranged along the vehicle transverse direction (Q) and is detachably fixed to a first fixing interface (BS1) of the wheel arm (2a, 2b).

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

7. The reach truck according to any one of claims 4 to 6, characterized in that: The traction battery carrier (10) is provided with lateral horizontal flange plates (15a, 15b), and the traction battery carrier (10) can be detachably fixed to the first fixing interface (BS1) of the wheel arm (2a, 2b) by means of the lateral horizontal flange plates.

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

10. The reach truck according to claim 9, characterized in that: The at least one fastening flange (20; 25) is arranged on the upper side and / or the front side of the traction battery carrier (10).

11. The reach truck according to claim 9 or 10, characterized in that: The additional weight module (ZM1) has a tower-like shape and is fastened to the upper side of the traction battery carrier (10).

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

13. The reach truck according to any 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. The reach truck according to claim 13, characterized in that: The wheel arm weight block (30; 31) is detachably fixed on the second fixing interface (BS2) of the wheel arm (2a; 2b).

15. The reach truck according to claim 13 or 14, characterized in that: The wheel arm weight (30; 31) is arranged along the longitudinal direction (L) of the vehicle.

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

17. The reach truck according to any one of claims 13 to 16, characterized in that: The wheel arm weight (30; 31) has a tower shape and / or a plate shape.

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

19. The reach truck according to any one of claims 1 to 18, characterized in that: The fixing interface (BS1, BS2) comprises a threaded connection (17; 23; 27).

20. The reach truck according to any one of claims 1 to 19, characterized in that: The additional weights (ZG1, ZG2) and / or the at least one additional weight module (ZM1, ZM2) are each designed as a cast part.

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

22. A system comprising a reach truck according to any one of claims 1 to 21, the reach truck having a vehicle frame (1) and a set of at least two different additional weights (ZG1, ZG2), wherein: The vehicle frame (1) of the reach forklift is provided with at least two fixing interfaces (BS1, BS2), on which different additional weights (ZG1, ZG2) can be detachably fixed.

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

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

Images