INDUSTRIAL TRUCK FLEET

Description

[0001] The invention relates to a fleet of industrial trucks comprising at least one horizontal order picker having a drive part and a load part provided with load rollers with which the horizontal order picker stands on a roadway, and at least one tractor having a drive part and a rear part provided with a trailer device and provided with chassis rollers with which the tractor stands on a roadway, and a counterbalance forklift having a drive part, a load part and a rear part provided with chassis rollers with which the counterbalance forklift stands on a roadway.

[0002] Industrial trucks designed as horizontal order pickers, tractors, and counterbalance forklifts are found in the product range of all major industrial truck manufacturers. The various industrial trucks designed as horizontal order pickers, tractors, and counterbalance forklifts belonging to a manufacturer are referred to in this patent application as the industrial truck fleet.

[0003] CN 205 151 673 U discloses a fleet of industrial trucks comprising at least one horizontal order picker, which has a drive part and a load part provided with load rollers with which the horizontal order picker stands on a roadway, and at least one tractor, which has a drive part and a rear part provided with a towing device and which is provided with chassis rollers with which the tractor stands on a roadway. The drive part of the at least one horizontal order picker and of the at least one tractor each have an identical unit frame, wherein the unit frame is designed such that at least one component of the load part of the at least one horizontal order picker and at least one component of the rear part of the at least one tractor can be screwed alternatively to the unit frame by means of screw connections.

[0004] The present invention is based on the object of providing an industrial truck fleet of the type mentioned above, which enables the industrial trucks of the industrial truck fleet to be manufactured with low manufacturing costs.

[0005] This object is achieved according to the invention in that the drive part of the at least one horizontal order picker, the at least one tractor and the counterbalance forklift truck each have an identical unit frame, wherein the unit frame is designed in such a way that at least one component of the load part of the at least one horizontal order picker, at least one component of the rear part of the at least one tractor or at least one component of the load part and at least one component of the rear part of the rear part of the counterbalance forklift truck can be screwed to the unit frame by means of screw connections, wherein the unit frame is provided in the aggregate space with fastening flanges which are designed in such a way that the following chassis variants can be produced: Side drive wheel and side support roller Central drive wheel without side support rollers Central drive wheel and two side support rollers Central drive wheel and counterweight.

[0006] According to the invention, a drive unit with an identical standard frame is provided for the industrial truck fleet, so that all the different industrial trucks in the industrial truck fleet can be manufactured with an identical standard frame. Because at least one component of the load section of at least one horizontal order picker, at least one component of the rear section of at least one tractor, or at least one component of the load section and at least one component of the rear section of the counterbalance forklift truck can be screwed to the identical standard frame using screw connections, the different industrial trucks in the industrial truck fleet can be manufactured simply and with minimal assembly effort.A structurally identical standard frame for the various industrial trucks in the fleet thus enables a modular concept and construction, whereby the corresponding components can be simply bolted onto the standard frame to produce the various industrial trucks in the fleet. The standard frame offers a number of advantages. Lower tool costs, such as costs for pressing tools and welding tools, are required to manufacture the frames for the drive components of the industrial trucks in the fleet, the documentation effort for technical documentation is standardized, warehousing and the storage of spare parts are simplified, and advantages arise in terms of greater flexibility when producing mixed versions of the various industrial trucks in the fleet.This results in low manufacturing costs for the various industrial trucks in the industrial truck fleet.

[0007] In conjunction with the load rollers or chassis rollers, the invention allows the standard frame to produce, depending on the industrial truck in the industrial truck series, a three-point chassis (load rollers or chassis rollers and a central drive wheel) with or without a counterweight in the power pack compartment, a four-point chassis (load rollers or chassis rollers, a side drive wheel, and one side support roller), or a five-point chassis (load rollers or chassis rollers, a central drive wheel, and two side support rollers). This allows the chassis to be easily adapted and manufactured to the different industrial trucks (horizontal order picker, tractor, or counterbalanced forklift) in the industrial truck fleet in terms of the number of contact points.The mounting flanges in the engine compartment are designed in such a way that the corresponding chassis variants can be manufactured without further structural adjustments to the standard frame.

[0008] According to an advantageous embodiment of the invention, the unit frame houses the engine compartment, a battery compartment, and an operator's station with a driver's platform for a standing operator. The unit frame is provided with a vertical rear wall, with the operator's station located between the battery compartment and the vertical rear wall. This unit frame design is particularly suitable for manufacturing horizontal order pickers, tractors, and counterbalance forklifts.

[0009] The operator station of the at least one horizontal order picker can be designed as a fixed or, alternatively, as a liftable operator station. This allows different variants of horizontal order pickers to be easily manufactured using the unit frame of the drive unit, with either a fixed or liftable operator station. Horizontal order pickers with a liftable operator station offer advantages when picking goods from the first or second shelf level.

[0010] According to an advantageous embodiment of the invention, the vertical rear wall of the unit frame is provided with bore-shaped recesses for accommodating the screw connections. Particularly advantageously, all bore-shaped recesses are formed in the vertical rear wall of the unit frame to allow all the corresponding components for the various industrial trucks in the industrial truck fleet to be screwed on using the appropriate screw connections. This further simplifies manufacturing costs, as the required recesses for all the screw connections of the various industrial trucks in the industrial truck fleet can be easily manufactured in the vertical rear wall of the unit frame.

[0011] According to an advantageous embodiment of the invention, the vertical rear wall is provided with two laterally spaced, vertical guide profiles in which a lifting carriage of the load section of at least one horizontal order picker is guided. When forming a horizontal order picker, a lifting carriage of the load section of the horizontal order picker can be guided vertically in two laterally spaced, vertical guide profiles of the unit frame with minimal manufacturing effort. Furthermore, the two laterally spaced, vertical guide profiles result in high stability of the vertical rear wall, which is advantageous for a tractor that does not have a lifting carriage, since high trailer loads acting on the vertical rear wall via the rear section can be handled safely.

[0012] In the industrial truck fleet according to the invention, the at least one horizontal order picker comprises the following variants and thus the following different horizontal order pickers: Horizontal order picker with initial lifting device of the load section Horizontal order picker with scissor mechanism of the load section Horizontal order picker with fixed load arms and mast lifting device of the load section Horizontal order picker with double-deck function comprising initial lifting device and mast lifting device of the load section.

[0013] The standard frame thus makes it possible to produce different variants or types of horizontal order pickers in a cost-effective manner without having to provide different variants of the frame of the drive part.

[0014] In a horizontal order picker with an initial lifting device for the load section, according to an advantageous embodiment of the invention, the component of the load section fastened to the vertical rear wall by means of screw connections is designed as the bearing point of a rod assembly that actuates the load rollers. Horizontal order pickers with an initial lifting device for the load section have a lifting and lowering carriage with a load fork attached thereto, at the tips of which load rollers are arranged so that they can be raised and lowered. A rod assembly is provided for raising and lowering the load rollers. This rod assembly is actuated by a lever, which is also part of the rod assembly, when the lifting carriage is raised. For this purpose, the lever is supported at a bearing point on the drive component.The bearing point of the lever of the linkage can be easily attached to the vertical rear wall of the unit frame by means of screw connections to form a horizontal order picker with initial lifting device of the load part.

[0015] The horizontal order picker with an initial lifting device for the load section preferably comprises a load fork attached to a lifting carriage and provided with load rollers, wherein the lifting carriage is guided in the vertical guide profiles. Thus, no additional components that must be attached to the unit frame are required for the vertical guidance of the raisable and lowerable lifting carriage, allowing a horizontal order picker with an initial lifting device for the load section to be manufactured simply and cost-effectively using the unit frame.

[0016] In a horizontal order picker with a scissor mechanism for the load section, according to an advantageous embodiment of the invention, the component of the load section fastened to the vertical rear wall by means of screw connections is designed as the bearing point of the scissor mechanism. Horizontal order pickers with a scissor mechanism for the load section have a raisable and lowerable lifting carriage with a load fork arranged thereon, which is supported by a scissor mechanism comprising two intersecting scissor links, one of which is provided with the load roller and the other of which is supported on the drive part at a bearing point. The bearing point of the scissor link on the drive part can be easily fastened to the vertical rear wall of the unit frame by means of screw connections to form a horizontal order picker with a scissor mechanism for the load section.

[0017] In a horizontal order picker with a scissor mechanism of the load section, the load section comprises a load fork attached to a lifting carriage. The component attached to the vertical rear wall by means of screw connections also comprises a lifting mast, wherein the lifting carriage is guided in the vertical guide profiles and in the lifting mast, in particular with lower guide rollers in the vertical guide profiles and with upper guide rollers in the lifting mast. With a lifting mast additionally attached to the vertical rear wall of the unit frame by means of screw connections, in which the lifting carriage is guided vertically with upper guide rollers, a high lifting height of the load fork can be achieved with little additional effort and with compact height dimensions of the vertical guide profiles of the unit frame in a horizontal order picker with a scissor mechanism of the load section, which enables ergonomic order picking.

[0018] In a horizontal order picker with fixed load arms and a mast lifting device of the load section, the load section comprises a load fork attached to a lifting carriage. According to an advantageous embodiment of the invention, the component attached to the vertical rear wall by means of screw connections comprises a load arm arrangement provided with load rollers. Furthermore, in such a horizontal order picker, the component attached to the vertical rear wall by means of screw connections comprises a lifting mast, wherein the lifting carriage is guided in the vertical guide profiles and in the lifting mast, in particular with lower guide rollers in the vertical guide profiles and with upper guide rollers in the lifting mast.In a horizontal order picker with fixed load arms and a mast lifting device for the load section, the load arm assembly, which is equipped with load rollers, can be easily attached to the unit frame using screw connections. With a lifting mast additionally attached to the vertical rear wall of the unit frame using screw connections, in which the lifting carriage with upper guide rollers is guided vertically, a high lifting height of the load forks can be achieved with little additional effort and with compact height dimensions of the vertical guide profiles of the unit frame in a horizontal order picker with fixed load arms and a mast lifting device for the load section, enabling ergonomic order picking.

[0019] The load arm arrangement preferably comprises two laterally spaced load arms, in each of which at least one load roller is arranged, wherein the two load arms are connected by means of a cross member which is fastened to the vertical rear wall by means of the screw connections. The load arm arrangement thus has, in plan view, a U-shaped structure formed from the two load arms and the cross member. This U-shaped structure results in high rigidity of the two load arms and can be easily fastened to the vertical rear wall of the unit frame via the cross member by means of screw connections. Advantageously, further screw connections are provided which are arranged perpendicular to the screw connections on the vertical rear wall of the unit frame and with which the cross member is fastened to a floor structure of the unit frame.With screw connections arranged perpendicular to each other, the load arm assembly is particularly securely attached to the unit frame.

[0020] In a horizontal order picker with a double-decker load section function, according to an advantageous embodiment of the invention, the component of the load section fastened to the vertical rear wall by means of screw connections is designed as a bearing point for a rod assembly that actuates the load rollers. Horizontal order pickers with a double-decker load section function have an initial lifting device for the load section with a raisable and lowerable lifting carriage with a load fork attached thereto, at the tips of which load rollers are arranged so that they can be raised and lowered. A rod assembly is provided for raising and lowering the load rollers. This rod assembly is actuated by a lever, which is also part of the rod assembly, when the lifting carriage is raised. For this purpose, the lever is supported at a bearing point on the drive component.The bearing point of the lever of the linkage can be easily attached to the vertical rear wall of the unit frame by means of screw connections to form a horizontal order picker with double-deck function of the load section.

[0021] The horizontal order picker with a double-decker load section preferably comprises a load fork attached to a lifting carriage and provided with load rollers, wherein the lifting carriage is guided in the vertical guide profiles. Thus, no additional components that must be attached to the unit frame are required for the vertical guidance of the raisable and lowerable lifting carriage of the initial lifting device, so that in a horizontal order picker with a double-decker function, the initial lifting device of the load section can be manufactured simply and cost-effectively using the unit frame.

[0022] A horizontal order picker with double-decker function preferably further comprises a lifting mast, which is attached to the lifting carriage and in which an additional load fork is guided. This makes it easy to provide an additional liftable and lowerable load fork without requiring attachments to the unit frame, which can be raised and lowered independently of the load fork equipped with the load rollers. In such a horizontal order picker with double-decker function, a first pallet can be handled by the load fork, which can be raised and lowered by means of the initial lifting device, and a second pallet can be handled by the additional load fork, which can be raised and lowered on the lifting mast.

[0023] In a tractor, according to an advantageous embodiment of the invention, the component of the rear section attached to the vertical rear wall by means of screw connections is designed as a rear component equipped with the chassis rollers. A rear component equipped with chassis rollers can be easily attached to the vertical rear wall of the unit frame by means of screw connections to form a tractor.

[0024] The rear section can be equipped with a towing hitch and / or a loading platform. By varying the rear section, different tractor variants can be easily manufactured using the standard frame, for example, a tractor with a towing hitch for coupling trailers or a tractor with a loading platform for transporting cargo.

[0025] In a counterbalance forklift truck, according to an advantageous embodiment of the invention, the component of the load section, which is attached to the vertical rear wall by means of screw connections, is designed as a lifting mast in which a load fork is guided, and the component of the rear section, which is attached to the vertical rear wall by means of screw connections, is designed as a rear component equipped with the chassis rollers. A rear component equipped with chassis rollers and a lifting mast, in which a load fork is arranged so that it can be raised and lowered, can be easily attached to the vertical rear wall of the unit frame by means of screw connections to form a counterbalance forklift truck.

[0026] The rear section of the tractor and the rear section of the counterbalance forklift are preferably identical in design, which advantageously results in low manufacturing costs. A towing device can also be attached to the rear section to create a tractor, for example, using screw connections.

[0027] In a tractor or counterbalance forklift, the rear component is designed according to an advantageous embodiment of the invention such that the rear component allows the rotational axes of the undercarriage rollers to be arranged at different distances in the vehicle's longitudinal direction from the drive wheel and / or at different vertical height positions. Thus, different wheelbases (distance of the rotational axes of the undercarriage rollers in the vehicle's longitudinal direction from the drive wheel) for a tractor or a counterbalance forklift can be easily achieved with an identical rear component, for example, a short wheelbase for a tractor and a long wheelbase for a counterbalance forklift.Alternatively or additionally, different ground clearances can be easily achieved on a tractor or counterbalance forklift truck using an identical rear component, or chassis rollers with different diameters can be attached, for example chassis rollers with a smaller diameter for tractors or counterbalance forklift trucks that are primarily operated inside buildings, or chassis rollers with a larger diameter for tractors or counterbalance forklift trucks that are also operated outside buildings.

[0028] Further advantages and details of the invention are explained in more detail with reference to the embodiment shown in the schematic figures. Figure 1 shows an overview of the industrial trucks of an industrial truck fleet according to the invention with a standard frame for the drive part. Figure 2 shows an overview of the chassis variants that can be produced with the standard frame. Figure 3 shows a horizontal order picker with an initial lifting device for the load section of the industrial truck fleet according to the invention. Figure 4 shows a horizontal order picker with a scissor mechanism for the load section of the industrial truck fleet according to the invention. Figure 5 shows a first variant of a horizontal order picker with fixed load arms and a mast lifting device for the load section of the industrial truck fleet according to the invention. Figure 6 shows a second variant of a horizontal order picker with fixed load arms and a mast lifting device for the load section of the industrial truck fleet according to the invention. Figure 7 shows a first variant of a horizontal order picker with double-deck function comprising an initial lifting device and a mast lifting device for the load section of the industrial truck fleet according to the invention.Figure 8 shows a second variant of a horizontal order picker with double-deck function comprising the initial lifting device and mast lifting device of the load section of the industrial truck fleet according to the invention, Figure 9 shows a tractor not belonging to the invention and a counterbalance forklift of the industrial truck fleet according to the invention, Figures 10a to 10c show the structure of the mast lifting device of the industrial truck fleet according to the invention, and Figures 11a to 11c show the structure of the initial lifting device of the industrial truck fleet according to the invention.

[0029] The Figure 1 shows an overview of the various industrial trucks of an industrial truck fleet 1 according to the invention with a unit frame 2 of the drive part A.

[0030] The industrial truck fleet 1 according to the invention comprises at least one horizontal order picker HK, each having a drive part A and a load part L provided with load rollers 3 with which the horizontal order picker HK stands on a roadway, and at least one tractor SP, which has a drive part A and a rear part HT provided with a trailer coupling and which is provided with chassis rollers 4 with which the tractor SP stands on a roadway. Furthermore, the industrial truck fleet 1 according to the invention comprises a counterbalance forklift GG, which has a drive part A, a load part L, and a rear part HT provided with chassis rollers 4 with which the counterbalance forklift GG stands on a roadway.

[0031] The drive part A has a frame as a load-bearing component, which in the industrial truck fleet 1 according to the invention is designed as an identical unit frame 2. In the industrial truck fleet 1 according to the invention, the at least one horizontal order picker HK, the at least one tractor SP, and the counterbalance forklift GG thus have a drive part A with the identical unit frame 2. Thus, the at least one horizontal order picker HK, the at least one tractor SP, and / or the counterbalance forklift GG can be produced and manufactured using the unit frame 2.

[0032] The structurally identical unit frame 2 is designed according to the invention in such a way that at least one component of the load part L of the at least one horizontal order picker HK, at least one component of the rear part HT of the at least one tractor SP or at least one component of the load part L and at least one component of the rear part HT of the counterbalance forklift GG can be screwed to the unit frame 2 by means of screw connections - as will be explained later.

[0033] Formed on the unit frame 2 are an engine compartment 5, a battery compartment 6, and an operator's station 7, which is provided with a driver's platform (shown in more detail) for a standing operator. The unit frame 2 is further provided with a vertical rear wall 8, with the operator's station 7 being arranged in the longitudinal direction of the drive part A between the battery compartment 6 and the vertical rear wall 8.

[0034] The aggregate compartment 5 is formed in the front region of the drive part A under a hood 9. In the longitudinal direction of the industrial truck 1, adjacent to the aggregate compartment 5 on the drive part A, the battery compartment 6 is formed for accommodating a traction battery that supplies an electric drive system of the industrial truck 1 with electrical energy. In the longitudinal direction of the industrial truck 1, adjacent to the battery compartment 6 on the drive part A, the operator's station 7 is formed by the driver's platform (not shown in detail) for a standing operator on which the operator stands. In the rear region of the drive part A, in the longitudinal direction of the industrial truck 1, the vertical rear wall 8 is arranged adjacent to the operator's station 7.

[0035] On the drive part A of the industrial truck 1, the control station 7 provided with the driver's platform is thus arranged in the longitudinal direction of the industrial truck 1 between the battery compartment 7 of the traction battery and the vertical rear wall 8 of the drive part A.

[0036] In the at least one horizontal order picker HK, the operator station 7 can be designed as a fixed operator station or, alternatively, as a liftable operator station. In the variant with a liftable operator station 7, a lifting frame can be attached to two vertical profiles 10 of the unit frame 2, on which the operator station can be raised and lowered.

[0037] For alternative fastening of the above-mentioned components by means of screw connections, the vertical rear wall 8 of the unit frame 2 is provided with bore-shaped recesses 15, 16, 18, which are intended to receive the screw connections that fasten the corresponding component.

[0038] The vertical rear wall 9 is further provided with two laterally spaced, vertical guide profiles 20a, 20b, in which a lifting carriage 25 of the at least one horizontal order picker HK is arranged to be raised and lowered and is thus guided.

[0039] In the aggregate room 5 - as in the Figure 2 is shown in more detail - an electrically driven and steerable drive wheel 21 is arranged, with which the drive part A is supported on the roadway. Further units can be arranged in the unit compartment 5, for example a power electronics unit and an electric lifting motor for driving a hydraulic pump, by means of which a hydraulic lifting device can be supplied with pressure medium.

[0040] In the Figure 2 Chassis variants A1 to A4 are also shown, which can be produced with the standard frame 2.

[0041] The unit frame 2 is provided in the assembly compartment 5 with several fastening flanges, for example, a fastening flange arranged centrally in the transverse direction of the vehicle and two lateral fastening flanges, which are designed such that the following chassis variants A1 to A4 can be produced without structural changes to the unit frame 2: A first chassis variant A1, in which the drive wheel 21 is arranged and fastened laterally on the fastening flanges, for example, a lateral fastening flange, and a lateral support roller 22 is arranged and fastened on the second side, for example, on the second lateral fastening flange. In conjunction with the load rollers 3 or chassis rollers 4, this results in a four-point chassis. Such a four-point chassis is particularly advantageous for horizontal order pickers.

[0042] A second chassis variant A2, in which the drive wheel 21 is arranged and fastened centrally in the transverse direction of the vehicle on the mounting flanges, for example, the central mounting flange, and a support roller, i.e., a total of two lateral support rollers, is arranged and fastened on each of the two lateral mounting flanges, for example. In conjunction with the load rollers 3 or chassis rollers 4, this results in a five-point chassis. Such a five-point chassis is particularly advantageous for horizontal order pickers with high travel speeds.

[0043] A third chassis variant, A3, in which the drive wheel 21 is positioned and secured centrally in the transverse direction of the vehicle on the mounting flanges, for example, the central mounting flange, and no additional lateral support rollers are provided. In conjunction with the load rollers 3 or chassis rollers 4, this results in a three-point chassis. This type of three-point chassis is particularly advantageous for tractors.

[0044] A fourth chassis variant A4, in which the drive wheel 21 is arranged and fastened centrally in the vehicle's transverse direction on the mounting flanges, for example, the central mounting flange, no additional lateral support rollers are provided, and one or more additional counterweights 23 are arranged and fastened, for example, on one or both lateral mounting flanges. In conjunction with the load rollers 3 or chassis rollers 4, this results in a three-point chassis. Such a three-point chassis with additional counterweights 23 in the assembly compartment 4 is particularly advantageous for a counterbalance forklift.

[0045] In the industrial truck fleet 1 according to the invention, the horizontal order pickers HK - as in the Figure 1 shown - the following variants: Horizontal order picker HK1 with initial lifting device for the load section L Horizontal order picker HK 2 with scissor mechanism for the load section L Horizontal order picker HK3 with fixed load arms 60 and mast lifting device for the load section L Horizontal order picker HK 4 with double-deck function comprising initial lifting device and mast lifting device for the load section L.

[0046] In the Figure 3 The horizontal order picker HK1 with initial lifting device of the load section L of the industrial truck fleet 1 according to the invention is shown in more detail.

[0047] The HK 1 horizontal order picker with initial lifting device for the load section L has a lifting and lowering carriage 25 with a load fork 26a, 26b arranged thereon, formed by two forks, at the tips of which at least one load roller 3 is arranged so that it can be raised and lowered. A linkage 30 is provided for raising and lowering each of the load rollers 3. This linkage is actuated by a lever 31 rotatably mounted on the lifting carriage 25, which is also a component of the linkage 30, when the lifting carriage 25 is raised. For this purpose, the lever 31 is supported at a bearing point 32 on the drive part A.

[0048] In the horizontal order picker HK1 according to the invention with an initial lifting device for the load section L, the component of the load section L fastened to the vertical rear wall 8 by means of screw connections is formed by the bearing point 32 of the rod 30 that actuates the load rollers 3. In the illustrated embodiment, the bearing point 32 is formed by inclined ramps that are fastened to the bore-shaped recesses 15 in the vertical rear wall 8 by means of corresponding fastening screws. The recesses 15 are preferably designed as vertically arranged elongated holes. The lever 31 of the rod 30 is supported on the inclined ramps by means of a roller. When the lifting carriage 25 is lifted by means of a hydraulic lifting device 35 designed as a lifting cylinder, the lever 31 with the roller moves along the inclined ramp, so that the rod 30 is actuated and the load rollers 3 are raised or lowered relative to the load fork 26a, 26b.The unit frame 2 is provided with a flange F on the vertical rear wall 8, to which the lifting device 35 can be attached. The lifting carriage 25 of the load part L is arranged in the two vertical guide profiles 20a, 20b of the unit frame 2 so that it can be raised and lowered.

[0049] The horizontal order picking egg HK1 with initial lifting device of the load part L of the Figure 3can be manufactured in different variants with load forks 26a, 26b of different lengths, for example for holding one pallet, two pallets, three pallets or four pallets. Depending on the length of the load forks 26a, 26b, the linkage 30 can be designed as a pull rod or as a push rod. For short load forks 26a, 26b, the linkage 30 is preferably designed as a push rod and for long load forks 26a, 26b, the linkage is designed as a pull rod. By appropriately selecting the pivot point of the lever 31 on the lifting carriage 25 and the pivot point of the linkage 30 on the lever 31, a one-armed lever 31 can be formed so that the linkage 30 forms a push rod, or a two-armed lever 31 can be formed so that the linkage 31 forms a pull rod.

[0050] In the Figure 4 The horizontal order picker HK2 with scissor mechanism of the load section L of the industrial truck fleet 1 according to the invention is shown in more detail.

[0051] The horizontal order picker HK2 with a scissor mechanism of the load section L has a liftable and lowerable lifting carriage 25 with a load fork 26a, 26b arranged thereon, formed by two forks, which is supported by a scissor mechanism. The scissor mechanism comprises two scissor links 40a, 40b that intersect at a rotation axis D and are pivotally connected to one another at the rotation axis D. Of these, the scissor link 40a is rotatably attached to the lifting carriage 25 at one end and is provided with at least one load roller 3 at the other end. The other scissor link 40b is supported at one end on the drive part A at a bearing point 41 and is connected at the other end to the underside of the load fork 26a, 26b.

[0052] In the horizontal order picker HK2 according to the invention with a scissor mechanism of the load section L, the component of the load section L fastened to the vertical rear wall 8 by means of screw connections is formed by the bearing point 41 of the scissor mechanism. In the illustrated embodiment, the bearing point 41 is formed by inclined ramps, which are fastened to the bore-shaped recesses 15 of the vertical rear wall 8 by means of corresponding fastening screws. The recesses 15 are preferably designed as vertically arranged elongated holes. The scissor link 40b is supported on the inclined ramps by means of a roller. When the lifting carriage 25 is raised by means of a hydraulic lifting device 35 designed as a lifting cylinder, the scissor link 40b moves with the roller along the inclined ramp, so that the load forks 26a, 26b and the scissor link 40a are supported.The unit frame 2 is provided with a flange F on the vertical rear wall 8 to which the lifting device 35 can be attached.

[0053] In the horizontal order picker HK2 according to the invention with scissor mechanism of the load part L, the component fastened to the vertical rear wall 8 by means of screw connections further comprises a lifting mast 50. In the illustrated embodiment, the lifting mast 50 is fastened by means of flange plates 50a, 50b to the bore-shaped recesses 16, 18 of the vertical rear wall 8 by means of corresponding fastening screws.

[0054] The lifting carriage 25 is arranged so as to be able to be raised and lowered in the vertical guide profiles 20a, 20b of the unit frame 2 and in the lifting mast 50 and is thus guided, for example with lower guide rollers in the vertical guide profiles 20a, 20b and with upper guide rollers in the lifting mast 50.

[0055] In the Figures 5 and 6a horizontal order picker HK3 with fixed load arms 60a, 60b and mast lifting device 70 of the load section L of the industrial truck fleet 1 according to the invention is shown in more detail.

[0056] In the horizontal order picker HK3 with fixed load arms 60a, 60b and mast lifting device 70 of the load section L, the load section L has a lifting carriage 25 that can be raised and lowered, with a load fork 26a, 26b arranged thereon, formed by two forks. The at least one component, which is fastened to the vertical rear wall 8 by means of screw connections, comprises a load arm arrangement 60 provided with the load rollers 3 and a lifting mast 50. In the illustrated embodiment, the lifting mast 50 is fastened by means of flange plates 50a, 50b to the bore-shaped recesses 16, 18 of the vertical rear wall 8 by means of corresponding fastening screws. The lifting mast 50 of the Figure 5 is preferably with the lifting mast 50 of the Figure 4 identical in construction.

[0057] The lifting carriage 25 is arranged in the vertical guide profiles 20a, 20b of the unit frame 2 and in the lifting mast 50 by means of the lifting device 35 and is thus guided, for example, with lower guide rollers in the vertical guide profiles 20a, 20b and with upper guide rollers in the lifting mast 50. The unit frame 2 is provided with a flange F on the vertical rear wall 8, to which the lifting device 35 can be attached.

[0058] The load arm assembly 60 is formed by two laterally spaced load arms 60a, 60b, each of which houses at least one load roller 3, and a cross member 60c connecting the two load arms 60a, 60b. The load arm assembly 60 is fastened to the vertical rear wall 8 in the region of the cross member 60c by means of several screw connections. Preferably, the load arm assembly 60 is fastened to the bore-shaped recesses 15 of the vertical rear wall 8 by means of corresponding screw connections. In addition, further screw connections can be provided, arranged perpendicular to the screw connections on the vertical rear wall 8 of the unit frame 2, with which the cross member 60c is fastened to a floor structure of the unit frame 2.

[0059] The horizontal order picker HK3 of the Figure 5 has load forks 26a, 26b, whose length allows the picking up of a pallet. The horizontal order picker HK3 of the Figure 6has load forks 26a, 26b, whose length allows the pick-up of two pallets. The horizontal order picker HK3 of the Figure 6 preferably has a higher load capacity than the horizontal order picker HK3 of the Figure 5 In order to support the higher loads of the load forks 26a, 26b, the lifting mast 50 of the horizontal order picker HK3 is Figure 6 extended downwards and connected to the load arm assembly 60 for transmitting forces.

[0060] In the Figures 7 and 8 a horizontal order picker HK4 with double-deck function comprising initial lifting device and mast lifting device of the load section L of the industrial truck fleet 1 according to the invention is shown in more detail.

[0061] The horizontal order picker HK4 of the Figure 7 or the Figure 8 Analogous to the horizontal order picker HK1, the Figure 3an initial lifting device for the load part L with a lifting carriage 25 that can be raised and lowered and has a load fork 26a, 26b arranged thereon, formed by two forks, at the tips of which at least one load roller 3 is arranged so that it can be raised and lowered. For raising and lowering the load rollers 3, a rod 30 is provided, which is actuated by a lever 31 rotatably arranged on the lifting carriage 25, which is also a component of the rod 30, when the lifting carriage 25 is raised. For this purpose, the lever 31 is supported at a bearing point 32 on the drive part A.

[0062] In the horizontal order picker HK4 according to the invention with a double-deck function of the load section L, the component of the load section L fastened to the vertical rear wall 8 by means of screw connections is formed by the bearing point 32 of the rod 30 that actuates the load rollers 3. In the illustrated embodiment, the bearing point 32 is formed by inclined ramps that are fastened to the bore-shaped recesses 15 of the vertical rear wall 8 by means of corresponding fastening screws. The recesses 15 are preferably designed as vertically arranged elongated holes. The lever 31 of the rod 30 is supported on the inclined ramps by means of a roller. When the lifting carriage 25 is lifted by means of a hydraulic lifting device 35 designed as a lifting cylinder, the lever 31 with the roller moves along the inclined ramp, so that the rod 30 is actuated and the load rollers 3 are raised or lowered relative to the load fork 26a, 26b.The unit frame 2 is provided with a flange F on the vertical rear wall 8, to which the lifting device 35 can be attached. The lifting carriage 25 of the load part L is arranged in the two vertical guide profiles 20a, 20b of the unit frame 2 so that it can be raised and lowered.

[0063] In order to achieve the double-deck function, the horizontal order picker HK4 has the Figures 7 or 8, a lifting mast 80 is further attached to the lifting carriage 25 which can be lifted by means of the initial lifting device, in which a further load fork 81 is guided and can be raised and lowered by means of a further hydraulic lifting device.

[0064] The horizontal order picker HK4 of the Figure 7 the load forks 26a, 26b and the load fork 81 each have a length to accommodate a pallet.

[0065] The horizontal order picker HK4 of the Figure 8The load fork 26a, 26b is longer and has a length to accommodate two pallets. The load fork 81 has a length to accommodate one pallet.

[0066] In the Figure 1 Furthermore, a tractor SP of the industrial truck fleet 1 according to the invention is shown in more detail.

[0067] In the SP tractor, the component of the rear section HT, which is attached to the vertical rear wall 8 by means of screw connections, is designed as a rear component 90, which is provided with the chassis rollers 4. In the illustrated embodiment, the rear component 90 is attached to the bore-shaped recesses 15 and / or 18 of the vertical rear wall 8 by means of corresponding fastening screws. A trailer coupling, for example a trailer coupling 91, can be attached to the rear component 90, for example by means of screw connections. Figure 9An alternative variant of a tractor SP is shown, which is not part of the invention, in which the rear component 90, which is analogous to the tractor of the Figure 1 is screwed to the unit frame 2, is provided with a loading platform 92.

[0068] In the Figure 1 Furthermore, a counterbalance forklift truck GG of the industrial truck fleet 1 according to the invention is shown in more detail.

[0069] In the counterbalance forklift GG, the component of the rear section HT, which is attached to the vertical rear wall 8 by means of screw connections, is designed as a rear component 90, which is provided with the chassis rollers 4. In the illustrated embodiment, the rear component 90 is attached to the bore-shaped recesses 15 and / or 18 of the vertical rear wall 8 by means of corresponding fastening screws. The rear component 90 of the tractor SP and the rear component 90 of the counterbalance forklift GG are preferably of identical construction.

[0070] In the counterbalance forklift truck GG according to the invention, the component of the load section L fastened to the vertical rear wall 8 by means of screw connections is designed as a lifting mast 100, in which a load fork 101 is arranged so that it can be raised and lowered by means of the hydraulic lifting device 35. The unit frame 2 is provided with a flange F on the vertical rear wall 8, to which the lifting device 35 can be fastened. In the illustrated embodiment, the lifting mast 100 is fastened by means of flange plates 100a, 100b, 100c to the bore-shaped recesses 16, 18, 15 of the vertical rear wall 8 by means of corresponding fastening screws. The counterbalance forklift truck GG can be designed with a rigid load fork 101 or an upwardly foldable load fork 101.If, in a counterbalance forklift truck GG with upwardly foldable load forks 101, a towing device is further arranged on a lifting carriage 102 on which the load forks 101 are arranged and which is arranged so as to be liftable and lowerable in the lifting mast 100, an industrial truck can be manufactured which combines the function of a tractor SP and a counterbalance forklift truck GG in one vehicle.

[0071] The rear component 90, which is used in the tractor SP and the counterbalance forklift GG, is preferably designed such that the rear component 90 allows an arrangement of the rotation axes DA of the chassis rollers 4 with different distances in the vehicle's longitudinal direction from the drive wheel and / or in different vertical height positions. Figure 1 four different positions I-IV of the rotation axes DA of the chassis rollers 4 are shown, which can be achieved with the rear component 90.

[0072] Position I produces a short wheelbase, which is ideal for a SP tractor. Position II produces a long wheelbase, which is ideal for a GG counterbalanced forklift. Position III provides increased ground clearance. Position IV enables the installation of larger diameter chassis rollers 4 for tractors or counterbalanced forklifts that are also operated outside of buildings. Positions I to III can be achieved, for example, using an eccentric bolt on which the corresponding chassis roller 4 is mounted. Using the standardized rear component 90, SP tractors or GG counterbalanced forklifts can therefore be easily manufactured in variants for operation inside buildings (positions I-III) or outside buildings (position IV).

[0073] In the Figures 10a to 10cUsing the example of the horizontal order picker HK2, it is shown in more detail that the lifting carriage 25 is guided with the lower guide rollers 110a, 110b in the vertical guide profiles 20a, 20b on the vertical rear wall 8 of the unit frame 2 and is guided with upper guide rollers 111a, 111b in corresponding profiles of the lifting mast 50. The vertical guide profiles 20a, 20b on the vertical rear wall 8 of the unit frame 2 are open towards the inside of the vehicle, and the profiles of the lifting mast 50 are open towards the outside of the vehicle. The guide rollers 110a, 110b and 111a, 111b can thus be easily arranged on the outer sides or inner sides of vertical flange plates 120a, 120b of the lifting carriage 35.

[0074] In the horizontal order picking HK3, the guidance of the lifting carriage 25 is analogous to the Figures 10a-10c .

[0075] In the Figures 11a to 11cUsing the example of the horizontal order picker HK1, it is shown in more detail that the lifting carriage 25, which can be raised and lowered by means of the initial lifting device, is guided with the lower guide rollers 110a, 110b and with the upper guide rollers 111a, 111b in the vertical guide profiles 20a, 20b on the vertical rear wall 8 of the unit frame 2.

[0076] In the case of the HK4 horizontal order picking machines, the guidance of the lifting carriage 25, which can be raised and lowered by means of the initial lifting device, is analogous to the Figures 11a-11c .

[0077] As can be seen from the figures, in the industrial truck fleet 1, the bearing point 32 of the horizontal order pickers HK1 and HK4, alternatively the bearing point 41 of the horizontal order picker HK2, alternatively the load arm arrangement 60 of the horizontal order picker HK3, or alternatively the rear component 90 of the tractor SP or counterbalance forklift GG as well as the lifting mast 100 of the counterbalance forklift GG are screwed to the bore-shaped recesses 15 of the rear wall 8 of the unit frame 2 by means of corresponding screw connections.

[0078] In the industrial truck fleet 1, the lifting mast 50 of the horizontal order picker HK2 or the horizontal order picker HK3 or alternatively the rear component 90 of the tractor SP or counterbalance forklift GG and the lifting mast 100 of the counterbalance forklift GG are screwed to the bore-shaped recesses 16, 18 of the rear wall 8 of the unit frame 2 by means of corresponding screw connections.

[0079] The industrial truck fleet 1 according to the invention enables the production of various horizontal order pickers HK1 to HK4, tractors SP, and, if appropriate, counterbalance forklifts GG using an identically constructed unit frame 2, whereby corresponding vehicle-specific components can be easily and modularly attached to the vertical rear wall 8 using screw connections, thus enabling a modular concept and system for the production of the various industrial trucks HK1-4, SP, GG of the industrial truck fleet 1. The vertical rear wall 8 with the bore-shaped recesses 15, 16, 18 forms corresponding screw flanges for the screw connections for fastening the vehicle-specific components.An identical standard frame 2 for the various industrial trucks HK1-4, SP, and GG in industrial truck fleet 1 thus enables a modular concept and design, whereby the corresponding vehicle-specific components can be simply bolted onto the standard frame 2 to produce the various industrial trucks in industrial truck fleet 1. The standard frame 2 offers a number of advantages. Lower tool costs, such as costs for pressing tools and welding tools, are required to manufacture the frames for the drive components of the industrial trucks in industrial truck fleet 1, the documentation effort for technical documentation is standardized, warehousing and the storage of spare parts are simplified, and advantages arise in terms of greater flexibility in mixed production of the various industrial trucks in industrial truck fleet 1.This results in low manufacturing costs for the various industrial trucks in the industrial truck fleet.

Claims

1. Industrial-truck fleet (1) comprising at least one horizontal order picker (HK, HK1-HK4), which has a drive part (A) and a load part (L) which is provided with load rollers (3) by way of which the horizontal order picker (HK, HK1-HK4) stands on a pathway, and comprising at least one tractor (SP), which has a drive part (A) and a tail part (HT), provided with a hitch (91), which is provided with chassis rollers (4) by way of which the tractor (SP) stands on a pathway, and comprising a counterweight forklift truck (GG), which has a drive part (A), a load part (L) and a tail part (HT) which is provided with chassis rollers (4) by way of which the counterweight forklift truck (GG) stands on a pathway, characterized in that the drive part (A) of the at least one horizontal order picker (HK, HK1-HK4), of the at least one tractor (SP) and of the counterweight forklift truck (GG) in each case has a structurally identical unit frame (2), wherein the unit frame (2) is designed in such a way that at least one component of the load part (L) of the at least one horizontal order picker (HK, HK1-HK4), at least one component of the tail part (HT) of the at least one tractor (SP) and at least one component of the load part (L) and at least one component of the tail part (HT) of the counterweight forklift truck (GG) are alternatively able to be screwed to the unit frame (2) by means of screw connections, wherein the unit frame (2) is provided in an assembly compartment (5) with fastening flanges which are configured in such a way that the following variants are able to be produced: • lateral drive wheel (21) and lateral supporting roller (22) • central drive wheel (21) without lateral supporting rollers • central drive wheel (21) and two lateral supporting rollers (22) • central drive wheel (21) and at least one counterweight (23).

2. Industrial-truck fleet according to Claim 1, characterized in that the assembly compartment (5), a battery compartment (6) and a control station (7) with a driver's standing platform for a standing operator are configured on the unit frame (2), wherein the unit frame (2) is provided with a vertical rear wall (8), wherein the control station (7) is arranged between the battery compartment (6) and the vertical rear wall (8).

3. Industrial-truck fleet according to Claim 1 or 2, characterized in that the control station (7) of the at least one horizontal order picker (HK, HK1-HK4) is configured as a fixed or raisable control station (7) .

4. Industrial-truck fleet according to one of Claims 1 to 3, characterized in that the vertical rear wall (8) of the unit frame (2) is provided with bore-like cutouts (15, 16, 18) for receiving the screw connections.

5. Industrial-truck fleet according to one of Claims 1 to 4, characterized in that the vertical rear wall (8) is provided with two vertical guide profiles (20a, 20b) which are spaced apart laterally and in which a lifting carriage (35) of the at least one horizontal order picker (HK, HK1-HK4) is guided.

6. Industrial-truck fleet according to one of Claims 1 to 5, characterized in that the at least one horizontal order picker (HK) comprises the following variants: • horizontal order picker (HK1) with an initial-lifting device of the load part (L) • horizontal order picker (HK2) with a scissor mechanism of the load part (L) • horizontal order picker (HK3) with fixed load arms (60) and a mast lifting device (70) of the load part (L) • horizontal order picker (HK4) with a double-deck function comprising an initial-lifting device and a mast lifting device of the load part (L).

7. Industrial-truck fleet according to Claim 6, characterized in that, in the case of a horizontal order picker (HK1) with an initial-lifting device of the load part (L), that component of the load part (L) which is fastened to the vertical rear wall (8) by means of screw connections is configured as a bearing point (32) of a rod assembly (30) which actuates the load rollers (3).

8. Industrial-truck fleet according to Claim 7, characterized in that the load part (L) comprises a load fork (26a, 26b) which is fastened to a lifting carriage (25) and which is provided with the load rollers (3), and the lifting carriage (25) is guided in the vertical guide profiles (20a; 20b).

9. Industrial-truck fleet according to Claim 6, characterized in that, in the case of a horizontal order picker (HK2) with a scissor mechanism of the load part (L), that component of the load part (L) which is fastened to the vertical rear wall (8) by means of screw connections is configured as a bearing point (41) of the scissor mechanism.

10. Industrial-truck fleet according to Claim 9, characterized in that the load part (L) comprises a load fork (26a, 26b) which is fastened to a lifting carriage (25), wherein the component fastened to the vertical rear wall (8) by means of screw connections comprises a lifting mast (50), wherein the lifting carriage (25) is guided in the vertical guide profiles (20a; 20b) and in the lifting mast (50), in particular is guided in the vertical guide profiles (20a; 20b) by way of lower guide rollers (110a, 110b) and in the lifting mast (50) by way of upper guide rollers (111a, 111b).

11. Industrial-truck fleet according to Claim 6, characterized in that, in the case of a horizontal order picker (HK3) with fixed load arms (60a, 60b) and a mast lifting device of the load part (L), the load part (L) comprises a load fork (26a, 26b) which is fastened to a lifting carriage (25), wherein the component fastened to the vertical rear wall (8) by means of screw connections comprises a load-arm arrangement (60) which is provided with the load rollers (3).

12. Industrial-truck fleet according to Claim 11, characterized in that the component fastened to the vertical rear wall (8) by means of screw connections comprises a lifting mast (50), wherein the lifting carriage (25) is guided in the vertical guide profiles (20a; 20b) and in the lifting mast (50), in particular is guided in the vertical guide profiles (20a; 20b) by way of lower guide rollers (110a, 110b) and in the lifting mast (50) by way of upper guide rollers (111a, 111b).

13. Industrial-truck fleet according to Claim 11 or 12, characterized in that the load-arm arrangement (60) comprises two load arms (60a, 60b) which are spaced apart laterally and in which in each case at least one load roller (3) is arranged, wherein the two load arms (60a, 60b) are connected by means of crossmember (60c) which is fastened to the vertical rear wall (8) by means of the screw connections.

14. Industrial-truck fleet according to Claim 6, characterized in that, in the case of a horizontal order picker (HK4) with a double-deck function, that component of the load part (L) which is fastened to the vertical rear wall (8) by means of screw connections is configured as a bearing point (32) of a rod assembly (30) which actuates the load rollers (3).

15. Industrial-truck fleet according to Claim 14, characterized in that the load part (L) comprises a load fork (26a, 26b) which is fastened to a lifting carriage (25) and which is provided with the load rollers (3), and the lifting carriage (25) is guided in the vertical guide profiles (20a; 20b).

16. Industrial-truck fleet according to Claim 15, characterized in that a lifting mast (80), in which a further load fork (81) is guided, is fastened to the lifting carriage (25).

17. Industrial-truck fleet according to Claim 1, characterized in that, in the case of a tractor (SP), that component of the tail part (HT) which is fastened to the vertical rear wall (8) by means of screw connections is configured as a tail component (90) which is provided with the chassis rollers (4).

18. Industrial-truck fleet according to Claim 17, characterized in that the tail component (90) is provided with a hitch (91) and / or a loading platform (92) .

19. Industrial-truck fleet according to Claim 1, characterized in that, in the case of a counterweight forklift truck (GG), that component of the load part (L) which is fastened to the vertical rear wall (8) by means of screw connections is configured as a lifting mast (100) in which a load fork (101) is guided, and that component of the tail part (HT) which is fastened to the vertical rear wall (8) by means of screw connections is configured as a tail component (90) which is provided with the chassis rollers (4).

20. Industrial-truck fleet according to one of Claims 17 to 19, characterized in that the tail component (HT) is configured in such a way that the tail component (HT) permits an arrangement of the axes of rotation (DA) of the chassis rollers (4) at different distances from a drive wheel in the vehicle longitudinal direction and / or in different vertical height positions.