Modular track system and method for installing a modular track system

Abstract

A modular track system comprising a plurality of track tile modules arranged in connection to each other. The track tile modules are providing a driving track configured for guiding wheels of a self-driving wheeled transport vehicle. The track tile modules comprise a grooved track structure having a first pair of parallel track grooves and a second pair of parallel track grooves extending in a direction perpendicular to the first pair of parallel track grooves. The grooved track structure of the track tile modules are forming the driving track when the track tile modules are arranged in connection to each other. A plurality of track tile modules are attached to a first base structure arranged on a first transport level and one or more track tile modules are attached to an elevating structure. The elevating structure is providing access for the transport vehicle between the first transport level and a second transport level different from the first transport level. At least some of the plurality of track tile modules attached to the first base structure and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design.

Description

[0001] MODULAR TRACK SYSTEM AND METHOD FOR INSTALLING A MODULAR

[0002] TRACK SYSTEM

[0003] TECHNICAL FIELD

[0004] The present disclosure relates to a modular track system comprising a plurality of track tile modules arranged in connection to each other. The track tile modules are providing a driving track that is guiding wheels of a self-driving wheeled transport vehicle. The track tile modules comprise a grooved track structure having a first pair of parallel track grooves, and a second pair of parallel track grooves extending in a direction perpendicular to the first pair of parallel track grooves. The grooved track structure of the track tile modules are forming the driving track when the track tile modules are arranged in connection to each other. The disclosure further relates to a method for installing a modular track system.

[0005] BACKGROUND

[0006] Transportation systems with self-driving wheeled transport vehicles are commonly used in different applications where there is a need for transporting objects or other goods between different transporting destinations. Such systems may for example be used in manufacturing facilities for transporting parts or products between workstations, and for transporting products to and from packaging stations. Other application areas may for example be in warehouses fortransporting goods or objects to different storage locations. The self-driving wheeled transport vehicles are commonly arranged as driverless self-propelled transport vehicles providing automated material flows. Such driverless transport vehicles are generally guided by track systems, inductive conductors, or optical markings on the floor. However, freely navigating transport vehicles can also be used, where the vehicles are equipped with navigation devices for orientation on a transport surface.

[0007] Track system based transportation systems are used for an efficient guiding of the self-driving wheeled transport vehicles. However, current transportation systems are often complex in design and non-flexible in construction. Further, such track systems are costly, especially if there is a need for transporting objects or goods between different transport levels, where elevating means are used for providing access for the transport vehicles between the different transport levels.

[0008] There is thus a need for simpler and more cost efficient track systems, enabling efficient transportation of objects or goods by means of self-driving wheeled transport vehicles.

[0009] SUMMARY

[0010] An object of the present disclosure is to provide a modular track system and a method for installing a modular track system, where the previously mentioned problems are avoided. This object is at least partly achieved by the features of the independent claims. The dependent claims contain further developments of the modular track system and the method for installing a modular track system.

[0011] The disclosure concerns a modular track system comprising a plurality of track tile modules arranged in connection to each other. The track tile modules are providing a driving track configured for guiding wheels of a self-driving wheeled transport vehicle. The track tile modules comprise a grooved track structure having a first pair of parallel track grooves and a second pair of parallel track grooves extending in a direction perpendicular to the first pair of parallel track grooves. The grooved track structure of the track tile modules are forming the driving track when the track tile modules are arranged in connection to each other. A plurality of track tile modules are attached to a first base structure arranged on a first transport level and one or more track tile modules are attached to an elevating structure. The elevating structure is providing access for the transport vehicle between the first transport level and a second transport level different from the first transport level. At least some of the plurality of track tile modules attached to the first base structure and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design.

[0012] Advantages with these features are that the modular track system can be made simple in design and flexible in construction. The configuration of the system with at least some of the plurality of track tile modules attached to the first base structure and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design, is enabling a simple and efficient construction of the modular track system for transporting objects or goods between different transport levels, where the elevating means is used for providing access for the transport vehicle between the different transport levels. In this way, the same type of track tile modules are used on the first transport level and the elevating structure. The purpose of arranging the track tile modules with the same design is to simplify the construction and flexibility of the modular track system using track tile modules arranged as standard components. With the expression track tile modules configured as tile modules having the same design is meant that the track tile modules have the same dimensions and configurations, and are arranged with the same grooved track structure. The grooved track structure is arranged in the same way on each track tile module configured as tile modules having the same design with the first pair of parallel track grooves and the second pair of parallel track grooves, where the second pair of parallel track grooves is extending in a direction perpendicular to the first pair of parallel track grooves. In one specific embodiment, the track tile modules configured as tile modules having the same design are manufactured with the aim to be identical, for example by machining the track tile modules with the same configurations and dimensions from the same suitable material, by injection moulding the track tile modules from the same material in identical moulds, by deep drawing or press forming the track tile modules from a suitable material, or by 3D printing the track tile modules in a 3D printer from a suitable printing material. The track tile modules 1 may for example be made of plastic materials, composite materials, metallic materials, wood, or wood composites.

[0013] In one embodiment, the elevating structure is arranged as an inclined ramp extending between the first transport level and the second transport level. The inclined ramp is enabling a simple and efficient construction for the elevating structure, and the transport vehicle could easily access the first transport level and the second transport level via the inclined ramp.

[0014] In one embodiment, the elevating structure is arranged as an elevator configured for displacing the one or more track tile modules attached to the elevator between the first transport level and the second transport level. The elevator is enabling an alternative efficient construction for the elevating structure, and the transport vehicle could easily access the first transport level and the second transport level via the elevator.

[0015] In one embodiment, the modular track system further comprises a plurality of track tile modules attached to a second base structure arranged on the second transport level. At least some of the plurality of track tile modules attached to the first base structure, at least some of the one or more track tile modules attached to the elevating structure, and at least some of the plurality of track tile modules attached to the second base structure, are configured as tile modules having the same design. The configuration of the system with at least some of the plurality of track tile modules attached to the first base structure, at least some of the plurality of track tile modules attached to the second base structure, and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design, is enabling a simple and efficient construction of the modular track system for transporting objects or goods between different transport levels, where the elevating means is used for providing access for the transport vehicle between the different transport levels. In this way, the same type of track tile modules are used on the first transport level, the second transport level, and the elevating structure.

[0016] In one embodiment, the track tile modules comprise an upper side, a lower side, a first longitudinal side edge, a second longitudinal side edge, a first lateral side edge, and a second lateral side edge. The grooved track structure is arranged on the upper side. The first pair of parallel track grooves are extending in a longitudinal direction of the track tile modules parallel to the first longitudinal side edge and the second longitudinal side edge. The second pair of parallel track grooves are extending in a lateral direction of the track tile modules parallel to the first lateral side edge and the second lateral side edge.

[0017] In one embodiment, the track tile modules comprise alignment structures arranged at the first longitudinal side edge, the second longitudinal side edge, the first lateral side edge, and the second lateral side edge. The alignment structures are configured for aligning the grooved track structures when the track tile modules are arranged in connection to each other. The alignment structure may have any suitable design, and the alignments structures are securing correct alignment between adjacent track tile modules in order to establish a driving track without misaligned track grooves. The alignment structures may be arranged as protruding sections and recessed sections of the respective side edges. In this way, the protruding sections are configured for engaging recessed sections of adjacent track tile modules, and the recessed sections are configured for engaging protruding sections of adjacent track tile modules, for an efficient arrangement of the modular track system.

[0018] In one embodiment, the lower side comprises one or more integrated reinforcing ribs. The integrated reinforcing ribs are enabling a stiff and durable construction of the track tile modules.

[0019] In one embodiment, the extension of the track tile modules in the longitudinal direction is greater than the extension of the track tile modules in the lateral direction. This different extension in the two directions is enabling a flexible and efficient system, where transport vehicles of different configurations may be used. Further, the modular track system could with this configuration of the track tile modules be made efficient with respect to space needed for the system.

[0020] In one embodiment, the track tile modules comprise one or more locking arrangements configured for releasably attaching the track tile modules to the first base structure, the elevating structure, and / or the second base structure. In a locked state of the locking arrangements, the track tile modules are connected to the first base structure, the elevating structure, and / or the second base structure. In an unlocked state of the locking arrangements, the track tile modules are disconnected from the first base structure, the elevating structure, and / or the second base structure. The locking arrangements are enabling efficient attachment and removal of the track tile modules.

[0021] In one embodiment, the locking arrangements are rotatably connected to the track tile modules. The locking arrangements comprise a latch configured for being rotatably displaced between the unlocked state and the locked state. In the unlocked state, the latch is disengaged from the first base structure, the elevating structure and / or the second base structure. In the locked state, the latch is engaging the first base structure, the elevating structure, and / or the second base structure. The rotating configuration is enabling a simple attachment of the track tile modules to the first base structure, the elevating structure and / or the second base structure. By rotating the locking arrangements with the latch from the unlocked state to the locked state, the latch is engaging a locking recess, track, or similar receiving arrangement, in the first base structure, the elevating structure, and / or the second base structure. To remove the track tile modules from the first base structure, the elevating structure, and / or the second base structure, the latch is rotated from the locked state to the unlocked state for disengaging the latch from the first base structure, the elevating structure, and / or the second base structure. In the unlocked state, the track tile modules can easily be removed from the first base structure, the elevating structure, and / or the second base structure for maintenance or replacement.

[0022] In one embodiment, the first pair of parallel track grooves is arranged with a first track gauge and the second pair of parallel track grooves is arranged with a second track gauge. The second track gauge is wider than the first track gauge. The first pair of parallel track grooves arranged with a first track gauge and the second pair of parallel track grooves arranged with a second track gauge are enabling formation of the driving track with different track widths, when the track tile modules are arranged in connection to each other.

[0023] In one embodiment, the modular track system further comprises one or more transition track tile modules. The one or more transition track tile modules comprise a grooved transition track structure having a pair of parallel transition track grooves. The one or more transition track tile modules are arranged between track tile modules attached to the first base structure and track tile modules attached to the elevating structure, and / or one or more transition track tile modules are arranged between track tile modules attached to the second base structure and track tile modules attached to the elevating structure.

[0024] In one embodiment, the track tile modules having the same design are configured as single piece track tile modules, and / or the track tile modules having the same design are configured as multi-piece track tile modules comprising two or more joined track tile sub-parts. The single piece track tile modules are manufactured in one structural piece. The multi-piece track tile modules comprising two or more joined track tile subparts, are manufactured in separate structural pieces forming the sub-parts that are joined to form the track tile modules.

[0025] The disclosure further concerns a method for installing a modular track system comprising a plurality of track tile modules arranged in connection to each other. The track tile modules are providing a driving track configured for guiding wheels of a self- driving wheeled transport vehicle. The track tile modules comprise a grooved track structure having a first pair of parallel track grooves and a second pair of parallel track grooves extending in a direction perpendicular to the first pair of parallel track grooves. The grooved track structure of the track tile modules are forming the driving track when the track tile modules are arranged in connection to each other. The method comprises the steps: attaching a plurality of track tile modules to a first base structure arranged on a first transport level; attaching one or more track tile modules to an elevating structure, where the elevating structure is providing access for the transport vehicle between the first transport level and a second transport level different from the first transport level; wherein at least some of the plurality of track tile modules attached to the first base structure and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design.

[0026] Advantages with the method are that the modular track system is easy to install, and can be made simple in design and flexible in construction. The configuration of the system with at least some of the plurality of track tile modules attached to the first base structure and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design, is enabling a simple and efficient construction of the modular track system fortransporting objects or goods between different transport levels, where the elevating means is used for providing access for the transport vehicle between the different transport levels. In this way, the same type of track tile modules are used on the first transport level and the elevating structure. The purpose of arranging the track tile modules with the same design is to simplify the construction and flexibility of the modular track system using track tile modules arranged as standard components.

[0027] In one embodiment, the method further comprises the step: attaching a plurality of track tile modules to a second base structure arranged on the second transport level, where at least some of the plurality of track tile modules attached to the first base structure, at least some of the plurality of track tile modules attached to the second base structure, and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design. The configuration of the system with at least some of the plurality of track tile modules attached to the first base structure, at least some of the plurality of track tile modules attached to the second base structure, and at least some of the one or more track tile modules attached to the elevating structure are configured as tile modules having the same design, is enabling a simple and efficient construction of the modular track system for transporting objects or goods between different transport levels, where the elevating means is used for providing access for the transport vehicle between the different transport levels. In this way, the same type of track tile modules are used on the first transport level, the second transport level, and the elevating structure.

[0028] In one embodiment, the track tile modules comprise one or more locking arrangements configured for releasably attaching the track tile modules to the first base structure, the elevating structure, and / or the second base structure. The method further comprises the steps: arranging the locking arrangements into a locked state for connecting the track tile modules to the first base structure, the elevating structure, and / or the second base structure; arranging the locking arrangements into an unlocked state for disconnecting the track tile modules from the first base structure, the elevating structure, and / or the second base structure. The locking arrangements are enabling efficient attachment and removal of the track tile modules.

[0029] In one embodiment, the locking arrangements are rotatably connected to the track tile modules. The locking arrangements comprise a latch configured for being rotatably displaced between the unlocked state and the locked state. The method further comprises the steps: rotating the latch from the unlocked state to the locked state for engaging the latch with the first base structure, the elevating structure, and / or the second base structure; rotating the latch from the locked state to the unlocked state for disengaging the latch from the first base structure, the elevating structure, and / or the second base structure. The rotating configuration is enabling a simple attachment of the track tile modules to the first base structure, the elevating structure, and / or the second base structure. By rotating the locking arrangements with the latch from the unlocked state to the locked state, the latch is engaging a locking recess, track, or similar receiving arrangement, in the first base structure, the elevating structure, and / or the second base structure. To remove the track tile modules from the first base structure, the elevating structure, or the second base structure, the latch is rotated from the locked state to the unlocked state for disengaging the latch from the first base structure, the elevating structure, and / or the second base structure. In the unlocked state, the track tile modules can easily be removed from the first base structure, the elevating structure, and / or the second base structure for maintenance or replacement.

[0030] In one embodiment, the modular track system further comprises one or more transition track tile modules, where the transition track tile modules comprise a grooved transition track structure having a pair of parallel transition track grooves. The method further comprises the steps: arranging one or more transition track tile modules between track tile modules attached to the first base structure and track tile modules attached to the elevating structure; and / or arranging one or more transition track tile modules between track tile modules attached to the second base structure and track tile modules attached to the elevating structure. The transition track tile modules are enabling a smooth transition between the respective base structures and the inclined ramp, and suitably, the transition track tile modules have a slightly curved cross-sectional side configuration adapted to the angular differences between the track tile modules on the respective base structures and the track tile modules on the inclined ramp.

[0031] In one embodiment, the track tile modules having the same design are configured as single piece track tile modules, and / or the track tile modules having the same design are configured as multi-piece track tile modules comprising two or more joined track tile sub-parts. The single piece track tile modules are manufactured in one structural piece. The multi-piece track tile modules comprising two or more joined track tile subparts, are manufactured in separate structural pieces forming the sub-parts that are joined to form the track tile modules.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] The disclosure will be described in detail in the following, with reference to the attached drawings, in which

[0034] Fig. 1 shows schematically, in a perspective view, a first embodiment of a modular track system comprising a plurality of track tile modules, and an elevating structure arranged as an inclined ramp, where the track tile modules are providing a driving track that is guiding wheels of selfdriving wheeled transport vehicles, Fig. 2a-d show schematically, in a perspective view from above, a track tile module configured as a single piece track tile module and a base structure; in a perspective view from below, the track tile module configured as a single piece track tile module; in a perspective view from above, track tile modules configured as a single piece track tile modules arranged in connection to each other; and in a perspective view from above, a track tile module configured as a multi-piece track tile module comprising joined track tile sub-parts.

[0035] Fig. 3a-c show schematically, in perspective views, a first variant of a transition track tile module of the modular track system,

[0036] Fig. 4a-c show schematically, in perspective views, a second variant of a transition track tile module of the modular track system,

[0037] Fig. 5a-b show schematically, in perspective partly cross-sectional views, a locking arrangement of the modular track system configured for releasably attaching the track tile modules to the base structure and the elevating structure,

[0038] Fig. 6a-d show schematically, in perspective views, a second embodiment of a modular track system comprising a plurality of track tile modules, and an elevating structure arranged as an elevator,

[0039] Fig. 7a-b show schematically, in a side view and in a view from below, a first embodiment of the self-driving wheeled transport vehicle, and

[0040] Fig. 8a-b show schematically, in a side view and in a view from below, a second embodiment of the self-driving wheeled transport vehicle.

[0041] DESCRIPTION OF EXAMPLE EMBODIMENTS

[0042] Various aspects of the disclosure will hereinafter be described in conjunction with the appended drawings to illustrate and not to limit the disclosure, wherein like designations denote like elements, and variations of the described aspects are not restricted to the specifically shown embodiments, but are applicable on other variations of the disclosure.

[0043] The figures schematically show embodiments of a modular track system S. The modular track system S comprises a plurality of track tile modules 1 arranged in connection to each other. By arranging the track tile modules 1 in connection to each other, a driving track T configured for guiding wheels W of a self-driving wheeled transport vehicle V is provided. The transport vehicle V is used for transporting any suitable type of object or objects between different locations of the modular track system S, such as for example between different workstations or from a workstation to a packing unit or other transportation unit.

[0044] The configuration of the driving track T is enabling transportation of the transport vehicle V in a longitudinal direction DLO of the modular track system S, and in a lateral direction DLA of the modular track system S. By designing the transport vehicle V with wheels W that are rotatably arranged, or alternatively with two sets of wheels W having different orientations, the transport vehicle V can alter between driving in the longitudinal direction DLO and the lateral direction DLA of the modular track system S.

[0045] The transport vehicle V may be connected to a control unit for controlling the driving operation. Alternatively or in combination, the transport vehicle V is provided with a suitable software for controlling the driving operation. It should be understood that a plurality of transport vehicles V could be operated simultaneously on the modular track system.

[0046] The track tile modules comprise a grooved track structure 2 having a first pair of parallel track grooves 2a and a second pair of parallel track grooves 2b extending in a direction perpendicular to the first pair of parallel track grooves 2a. The grooved track structure 2 of the track tile modules 1 are forming the driving track T when the track tile modules 1 are arranged in connection to each other.

[0047] The modular track system S comprises a plurality of track tile modules 1 attached to a first base structure 3a arranged on a first transport level L1 and one or more track tile modules 1 are attached to an elevating structure 4. The elevating structure 4 is providing access for the transport vehicle V between the first transport level L1 and a second transport level L2 different from the first transport level L1. At least some of the plurality of track tile modules 1 attached to the first base structure 3a and at least some of the one or more track tile modules 1 attached to the elevating structure 4 are configured as tile modules having the same design.

[0048] In embodiments, the modular track system S further comprises a plurality of track tile modules 1 attached to a second base structure 3b arranged on the second transport level L2. With this configuration of the modular track system S, at least some of the plurality of track tile modules 1 attached to the first base structure 3a, at least some of the one or more track tile modules 1 attached to the elevating structure 4, and at least some of the plurality of track tile modules 1 attached to the second base structure 3b, are configured as tile modules having the same design.

[0049] A first embodiment of the modular track system S is illustrated in figure 1. In this embodiment, the modular track system S is arranged with two different transport levels, and the transport vehicles V can drive on each of the two transport levels and between the transport levels for an efficient transportation of objects. The modular track system S comprises a first transport level L1 , and a second transport level L2 different from the first transport level L1. An elevating structure 4 is providing access for the transport vehicles V between the first transport level L1 and the second transport level L2. In the embodiment shown in figure 1 , the elevating structure 4 is arranged as an inclined ramp 4a. The inclined ramp 4a is extending between the first transport level L1 and the second transport level L2, as will be further described below.

[0050] In the embodiment shown in figure 1 , a plurality of track tile modules 1 are attached to a first base structure 3a arranged on the first transport level L1. The first base structure 3a may be configured as a floor structure of the first transport level L1 , or as a frame or beam system arranged on the first transport level L1 , for holding the plurality of track tile modules 1. Similarly, a plurality of track tile modules 1 are attached to a second base structure 3b arranged on the second transport level L2. The second base structure 3b may be configured as a floor structure of the second transport level L2, or as a frame or beam system arranged on the second transport level L2, for holding the plurality of track tile modules 1. The modular track system S further comprises track tile modules 1 attached to the inclined ramp 4a. The inclined ramp 4a may suitably be arranged as an inclined beam structure or plate structure to which the track tile modules 1 are attached. As schematically illustrated in figure 1 and 2a-d, the plurality of track tile modules 1 attached to the first base structure 3a, the plurality of track tile modules 1 attached to the second base structure 3b, and some of the track tile modules attached to the elevating structure 4 arranged as the inclined ramp 4a are configured as tile modules having the same design.

[0051] With the expression track tile modules 1 configured as tile modules having the same design is meant that the track tile modules 1 have the same dimensions and configurations, and are arranged with the same grooved track structure 2. The grooved track structure 2 is thus arranged in the same way on each track tile module 1 configured as tile modules having the same design with a first pair of parallel track grooves 2a and a second pair of parallel track grooves 2b, where the second pair of parallel track grooves 2b is extending in a direction perpendicular to the first pair of parallel track grooves 2a. The first pair of parallel track grooves 2a is arranged with a first track gauge G1 and the second pair of parallel track grooves 2b is arranged with a second track gauge G2, enabling formation of the driving track T when the track tile modules 1 are arranged in connection to each other. In one specific embodiment, the track tile modules configured as tile modules having the same design are manufactured with the aim to be identical, for example by machining the track tile modules with the same configurations and dimensions from the same suitable material, by injection moulding the track tile modules from the same material in identical moulds, by deep drawing or press forming the track tile modules from a suitable material, or by 3D printing the track tile modules in a 3D printer from a suitable printing material. The track tile modules 1 may for example be made of plastic materials, composite materials, metallic materials, wood, or wood composites.

[0052] The purpose of arranging the track tile modules 1 with the same design is to simplify the construction and flexibility of the modular track system S using track tile modules 1 arranged as standard components. In this way, the same type of track tile modules 1 are used at least on the first transport level L1 and the elevating structure 4. Suitably, the same track tile modules 1 configured as tile modules having the same design are used on the first transport level L1 , the elevating structure 4, and the second transport level L2. The track tile modules 1 configured as tile modules having the same design may be configured as single piece track tile modules, where the track tile modules 1 are manufactured in one structural piece. In the embodiment shown in figure 2a, the track tile modules 1 arranged as tile modules having the same design are configured as single piece track tile modules. Alternatively, the track tile modules 1 configured as tile modules having the same design are configured as multi-piece track tile modules comprising two or more joined track tile sub-parts 1a, where the track tile modules 1 are manufactured in separate structural pieces forming the sub-parts 1a that are joined to form the track tile modules 1 . In figure 2d, an alternative embodiment of the track tile modules 1 arranged as tile modules having the same design, is schematically illustrated. In this embodiment, the track tile modules 1 are configured as multi-piece track tile modules comprising joined track tile sub-parts 1a. In the shown embodiment, the track tile modules 1 are formed by joining four track tile sub-parts 1a.

[0053] With reference to the embodiment shown in figure 1 , all track tile modules 1ion the first transport level L1 attached to the first base structure 3a, all track tile modules 1 2 on the second transport level L2 attached to the second base structure 3b, and some of the track tile modules attached to the elevating structure 4 arranged as the inclined ramp 4a, are configured as tile modules having the same design. As understood from the figure, three track tile modules 1 R on the inclined ramp 4a are configured as tile modules having the same design.

[0054] As indicated in figure 1 , the first pair of parallel track grooves 2a of the track tile modules 1 when arranged in connection to each other define first drive lanes Di for the transport vehicle V. The first drive lanes Di are configured to guide the wheels W of the transport vehicle V in the longitudinal direction DLO along first pairs of parallel track grooves 2a of track tile modules 1 arranged in connection to each other. The second pair of parallel track grooves 2b of the track tile modules 1 when arranged in connection to each other define second drive lanes D2 for the transport vehicle V. The second drive lanes D2 are configured to guide wheels W of the transport vehicle V in the lateral direction DLA along second pairs of parallel track grooves 2a of track tile modules 1 arranged in connection to each other.

[0055] An embodiment of the track tile modules 1 configured as tile modules having the same design is shown in figures 2a-c. As understood from the figures, the track tile module 1 comprises a grooved track structure 2 having a first pair of parallel track grooves 2a and a second pair of parallel track grooves 2b. The second pair of parallel track grooves 2b is extending in a direction perpendicular to the first pair of parallel track grooves 2a in an intersecting relationship. The grooved track structure 2 of the track tile modules 1 are forming the driving track T when the track tile modules 1 are arranged in connection to each other.

[0056] As illustrated in figure 2a, the track tile modules 1 have an extension in a longitudinal direction DLO and a lateral direction DLA. The longitudinal direction DLO of the track tile modules 1 when the track tile modules 1 are arranged in connection to other track tile modules 1 in the modular track system S is corresponding to the longitudinal direction DLO of the modular track system S, as understood from figures 1 and 2a. The lateral direction DLA of the track tile modules 1 when the track tile modules 1 are arranged in connection to other track tile modules 1 in the modular track system S is corresponding the to the lateral direction DLA of the modular track system S, as understood from figures 1 and 2a.

[0057] As shown in figures 2a-c, the track tile modules 1 comprise an upper side 5a, a lower side 5b, a first longitudinal side edge 6a, a second longitudinal side edge 6b, a first lateral side edge 7a, and a second lateral side edge 7b. The grooved track structure 2 is arranged on the upper side 5a, and arranged as recessed groove structures in the top structure of the upper side 5a. The first pair of parallel track grooves 2a are extending in a longitudinal direction DLO of the track tile modules 1 parallel to the first longitudinal side edge 6a and the second longitudinal side edge 6b. The second pair of parallel track grooves 2b are extending in a lateral direction DLA of the track tile modules 1 parallel to the first lateral side edge 7a and the second lateral side edge 7b. The lower side 5b comprises a plurality of integrated reinforcing ribs 10 that are enabling a stiff and durable construction of the track tile modules 1.

[0058] In the embodiment shown in figures 2a-c, the extension of the track tile modules 1 in the longitudinal direction DLO is greater than the extension of the track tile modules 1 in the lateral direction DLA. This different extension in the two directions is enabling a flexible and efficient system, where transport vehicles V of different configurations may be used. Further, the modular track system S could with this configuration of the track tile modules 1 be made efficient with respect to space needed for the system. As described above, the first pair of parallel track grooves 2a is arranged with a first track gauge G1 and the second pair of parallel track grooves 2b is arranged with a second track gauge G2. The second track gauge G2 is wider than the first track gauge G1 , as understood from figure 2a. The respective track gauges are adapted to the configuration of the transport vehicles V and are matching distances between the wheels W of the transport vehicles V.

[0059] As shown in figure 2a, intersections I of the first pair of parallel track grooves 2a with the second pair of parallel track grooves 2b form four track groove junctions J. When wheels W of the transport vehicle V is positioned in the track groove junctions J, the transport vehicle V can change driving directions between directions along the longitudinal direction DLO of the modular track system S and the lateral direction DLA of the modular track system S.

[0060] In the embodiments shown in figures 2a-d the track tile modules 1 comprise alignment structures 8 arranged at the first longitudinal side edge 6a, the second longitudinal side edge 6b, the first lateral side edge 7a, and the second lateral side edge 7b. The alignment structures 8 are configured for aligning the grooved track structures 2 when the track tile modules 1 are arranged in connection to each other. The alignment structure 8 may have any suitable design, and the alignments structures 8 are securing correct alignment between adjacent track tile modules 1 in order to establish a driving track T without misaligned track grooves. In the embodiments shown in figures 2a-d, the alignment structures 8 are arranged as protruding sections 8a and recessed sections 8b of the respective side edges. The protruding sections 8a are engaging recessed sections 8b of adjacent track tile modules 1 , and the recessed sections 8b are engaging protruding sections 8a of adjacent track tile modules 1 , for an efficient configuration of the modular track system S.

[0061] The track tile modules 1 comprise one or more locking arrangements 9 configured for releasably attaching the track tile modules 1 to the first base structure 3a, the elevating structure 4, and / or the second base structure 3b. In the embodiment shown in figure 2a, the track tile modules 1 comprise four locking arrangements 9 arranged in each corner section of the track tile modules 1. The locking arrangements 9 are illustrated more in detail in figures 5a-b.

[0062] The locking arrangements 9 are rotatably connected to the track tile modules 1 , as illustrated with an arrow in figure 5a. The locking arrangements 9 comprise a latch 9a configured for being rotatably displaced between an unlocked state Su and a locked state SL. In the locked state SL of the locking arrangements 9, the track tile modules 1 are connected to the first base structure 3a, the elevating structure 4, and / or the second base structure 3b. In the unlocked state Su, the latch 9a is disengaged from the first base structure 3a, the elevating structure 4 and / or the second base structure 3b. In the unlocked state Su of the locking arrangements 9, the track tile modules 1 are disconnected from the first base structure 3a, the elevating structure 4, and / or the second base structure 3b. In the locked state Si_, the latch 9a is engaging the first base structure 3a, the elevating structure 4, and / or the second base structure 3b.

[0063] To connect the track tile modules 1 to the first base structure 3a, the elevating structure 4, and / or the second base structure 3b, the track tile modules 1 are first placed in a correct position onto the first base structure 3a, the elevating structure 4, and / or the second base structure 3b, as indicated in figure 5a. By rotating the locking arrangements 9 with the latch 9a from the unlocked state Su to the locked state Si_, the latch 9a is engaging a locking recess, track, or similar receiving arrangement, in the first base structure 3a, the elevating structure 4, and / or the second base structure 3b, as shown in figures 5a-b. To remove the track tile modules 1 from the first base structure 3a, the elevating structure 4, and / or the second base structure 3b, the latch 9a is rotated from the locked state SL to the unlocked state Su for disengaging the latch 9a from the first base structure 3a, the elevating structure 4, or the second base structure 3b. In the unlocked state Su, the track tile modules can easily be removed from the first base structure 3a, the elevating structure 4, and / or the second base structure 3b for maintenance or replacement. A suitable tool may be used for rotating the locking arrangements 9.

[0064] As described above and shown in figure 2d, an alternative embodiment of the track tile modules 1 arranged as tile modules having the same design, is schematically illustrated. In this embodiment, the track tile modules 1 are configured as multi-piece track tile modules comprising joined track tile sub-parts 1a. In the shown embodiment, the track tile modules 1 are formed by joining four track tile sub-parts 1a. The track tile sub-parts 1a may be joined by any suitable means for forming the track tile modules, such as for example by using glue, screw fastening members, rivets, snap fasteners, heat bonding operations, and / or welding operations.

[0065] In the embodiment shown in figures 1 , 3a-c, and 4a-c, the modular track system S further comprises transition track tile modules 1 TR comprising a grooved transition track structure 2TR having a pair of parallel transition track grooves 2c. In this embodiment, a first transition track tile module 1TRI is arranged between a track tile module 1 attached to the first base structure 3a and a track tile module 1 attached to the elevating structure 4. A second transition track tile module 1 TR2 is arranged between a track tile module 1 attached to the second base structure 3b and a track tile module 1 attached to the elevating structure 4. The transition track tile modules 1 TR are enabling a smooth transition between the respective base structures and the inclined ramp 4a, and suitably, the transition track tile modules 1TR have a slightly curved cross-sectional side configuration adapted to the angular differences between the track tile modules 1 on the respective base structures and the track tile modules 1 on the inclined ramp 4a. The curvature of the transition track tile modules 1TR may be configured in any suitable way, and may vary depending on the ramp angle of the inclined ramp 4a.

[0066] The transition track tile modules 1TR are illustrated more in detail in figures 3a-c and 4a-c. In figures 3a-c, the first transition track tile module 1TRI arranged between a track tile module 1 attached to the first base structure 3a and a track tile module 1 attached to the elevating structure 4, is illustrated. In figures 4a-c, the second transition track tile module 1 TR2 arranged between a track tile module 1 attached to the second base structure 3b and a track tile module 1 attached to the elevating structure 4, is illustrated.

[0067] As shown in figures 1 and 3a-c, the first transition track tile module 1TRI is formed by two first transition track tile sub-parts 1bi, adapted to the shape of the transition between the first base structure 3a and the inclined ramp 4a. The first transition track tile sub-parts 1 bi may have tapering cross-sectional configurations, as illustrated in for example figure 3a. The two first transition track tile sub-parts 1 bi each comprises alignment structures 8 arranged at facing side edges, as understood from figure 3a. The alignment structures 8 are configured for aligning the grooved transition track structure 2TR when the two first transition track tile sub-parts 1bi are arranged in connection to each other and forming the first transition track tile module 1TRI . The alignment structure 8 may have any suitable design, and the alignments structures 8 are securing correct alignment between the first transition track tile sub-parts 1 bi in order to establish a driving track T without misaligned track grooves. In the embodiment shown in figures 3a-c, the alignment structures 8 are arranged as protruding sections 8a and recessed sections 8b of the respective side edges. The protruding sections 8a are engaging recessed sections 8b of the adjacent first transition track tile sub-parts 1bi, and the recessed sections 8b are engaging protruding sections 8a of adjacent first transition track tile sub-parts 1 bi .

[0068] As shown in figures 1 and 4a-c, the second transition track tile module 1 TR2 is formed by two second transition track tile sub-parts 1 b2, adapted to the shape of the transition between the second base structure 3b and the inclined ramp 4a. The second transition track tile sub-parts 1b2 may have tapering cross-sectional configurations, as illustrated in for example figure 4a. The two second transition track tile sub-parts 1 b2 each comprises alignment structures 8 arranged at facing side edges, as understood from figure 4a. The alignment structures 8 are configured for aligning the grooved transition track structure 2TR when the two second transition track tile sub-parts 1b2 are arranged in connection to each other and forming the second transition track tile module 1TR2. The alignment structure 8 may have any suitable design, and the alignments structures 8 are securing correct alignment between the second transition track tile sub-parts 1b2 in order to establish a driving track T without misaligned track grooves. In the embodiment shown in figures 4a-c, the alignment structures 8 are arranged as protruding sections 8a and recessed sections 8b of the respective side edges. The protruding sections 8a are engaging recessed sections 8b of the adjacent second transition track tile sub-parts 1 b2, and the recessed sections 8b are engaging protruding sections 8a of adjacent second transition track tile sub-parts 1b2.

[0069] An alternative embodiment of the modular track system S is illustrated in figures 6a- d. In this embodiment, the modular track system S is arranged with two different transport levels, and the transport vehicles V can drive on each of the two transport levels and between the transport levels for an efficient transportation of objects. The modular track system S comprises a first transport level L1 , and a second transport level L2 different from the first transport level L1. An elevating structure 4 is providing access for the transport vehicles V between the first transport level L1 and the second transport level L2. In the embodiment shown in figures 6a-d, the elevating structure 4 is arranged as an elevator 4b. The elevator 4b is configured for displacing the one or more track tile modules 1 attached to the elevator 4b between the first transport level L1 and the second transport level L2.

[0070] In the embodiment shown in figures 6a-d, a plurality of track tile modules 1Liare attached to a first base structure 3a arranged on the first transport level L1. The first base structure 3a may be configured as a floor structure of the first transport level L1 or as a frame or beam system arranged on the first transport level L1 for holding the plurality of track tile modules 1Li- Similarly, a plurality of track tile modules 1 2 are attached to a second base structure 3b arranged on the second transport level L2. The second base structure 3b may be configured as a floor structure of the second transport level L2 or as a frame or beam system arranged on the second transport level L2 for holding the plurality of track tile modules 1 2. The modular track system S in the illustrated embodiment further comprises one track tile module 1 E attached to the elevator 4b. The elevator 4b may suitably comprise a beam structure or plate structure to which the track tile module 1 E is attached.

[0071] As schematically illustrated in figures 6a-d, the plurality of track tile modules 1Liattached to the first base structure 3a, the plurality of track tile modules 1 2 attached to the second base structure 3b, and the track tile module 1 E attached to the elevating structure 4 arranged as the elevator 4b are configured as tile modules having the same design.

[0072] With the expression track tile modules 1 configured as tile modules having the same design is meant that the track tile modules 1 have the same dimensions and configurations, and are arranged with the same grooved track structure 2. The grooved track structure 2 is thus arranged in the same way on each track tile module 1 configured as tile modules having the same design with a first pair of parallel track grooves 2a and a second pair of parallel track grooves 2b, where the second pair of parallel track grooves 2b is extending in a direction perpendicular to the first pair of parallel track grooves 2a. The first pair of parallel track grooves 2a is arranged with a first track gauge G1 and the second pair of parallel track grooves 2b is arranged with a second track gauge G2, enabling formation of the driving track T when the track tile modules 1 are arranged in connection to each other. In one specific embodiment, the track tile modules configured as tile modules having the same design are manufactured with the aim to be identical, for example by machining the track tile modules with the same configurations and dimensions from the same suitable material, by injection moulding the track tile modules from the same material in identical moulds, by deep drawing or press forming the track tile modules from a suitable material, or by 3D printing the track tile modules in a 3D printer from a suitable printing material. The track tile modules 1 may for example be made of plastic materials, composite materials, metallic materials, wood, or wood composites. The purpose of arranging the track tile modules 1 with the same design is to simplify the construction and flexibility of the modular track system S using track tile modules 1 arranged as standard components. In this way, the same type of track tile modules 1 are used at least on the first transport level L1 and the elevating structure 4. Suitably, the same track tile modules 1 configured as tile modules having the same design are used on the first transport level L1 , the elevating structure 4, and the second transport level L2. The track tile modules 1 configured as tile modules having the same design may be configured as single piece track tile modules, where the track tile modules 1 are manufactured in one structural piece. The track tile modules 1 arranged as tile modules having the same design are configured as single piece track tile modules. Alternatively, the track tile modules 1 configured as tile modules having the same design are configured as multi-piece track tile modules comprising two or more joined track tile sub-parts 1a, where the track tile modules 1 are manufactured in separate structural pieces forming the sub-parts 1 a that are joined to form the track tile modules 1.

[0073] Track tile modules 1 suitable for the modular track system S in figures 6a-d are schematically illustrated in figures 2a-d and described above.

[0074] With reference to the embodiment shown in figures 6a-d, all track tile modules 1Lion the first transport level L1 attached to the first base structure 3a, all track tile modules 1 2 on the second transport level L2 attached to the second base structure 3b, and the track tile module 1 E attached to the elevating structure 4 arranged as the elevator 4b, are configured as tile modules having the same design. As understood from the figure, one track tile module 1 E on the elevator 4b is configured as tile modules having the same design.

[0075] As shown in figure 6a, the first pair of parallel track grooves 2a of the track tile modules 1 when arranged in connection to each other define first drive lanes Di for the transport vehicle V. The first drive lanes Di are configured to guide the wheels W of the transport vehicle V along first pairs of parallel track grooves 2a of track tile modules 1 arranged in connection to each other. The second pair of parallel track grooves 2b of the track tile modules 1 when arranged in connection to each other define second drive lanes D2 for the transport vehicle V. The second drive lanes D2 are configured to guide wheels W of the transport vehicle V along second pairs of parallel track grooves 2a of track tile modules 1 arranged in connection to each other. Figure 6b is illustrating a transport vehicle V driving on the first transport level L1 towards the elevator 4b. When the transport vehicle V is positioned on the track tile module 1 E of the elevator, the vehicle V can be transported by means of the elevator 4b from the first transport level L1 to the second transport level L2, as shown in figure 6c. When the transport vehicle V has reached the second transport level L2, the transport vehicle V can drive out from the elevator 4b to the second transport level L2, as shown in figure 6d.

[0076] The transport vehicle V may have any suitable configuration, and to shift between driving in the first lanes Di and the second drive lane, the transport vehicle may be arranged with wheels W that are rotatably arranged around a wheel axis Aw, as shown in figures 7a-b. In a first wheel position P1 , the transport vehicle V is configured for driving in the first drive lanes Di along first pairs of parallel track grooves 2a of track tile modules 1 arranged in connection to each other. In a second wheel position P2, where the wheels are rotated 90 degrees from the first position P1, the transport vehicle V is configured for driving in the second drive lanes D2 along second pairs of parallel track grooves 2b of track tile modules 1 arranged in connection to each other. The wheels W are rotated between the first position P1 and the second position P2, when the transport vehicle V is positioned on a track tile module 1 with each wheel W arranged in a corresponding groove junction J of the track tile module 1 .

[0077] In an alternative configuration shown in figure 8a-b, the transport vehicle V comprises two sets of wheels W. A first set of wheels W1 are configured for driving the transport vehicle V in the first drive lanes Di along first pairs of parallel track grooves 2a of track tile modules 1 arranged in connection to each other. A second set of wheels W2 are configured for driving the transport vehicle V in the second drive lanes D2 along second pairs of parallel track grooves 2b of track tile modules 1 arranged in connection to each other. Each of the first set of wheels W1 and second set of wheels W2 may suitably be arranged as a wheel set that could be raised and lowered relative to the transport vehicle V, as indicated in figure 8a. In a lowered position PL, the set of wheels are used for driving the transport vehicle V, and in a raised position PR, the set of wheels are deactivated from driving the vehicle, as understood from figures 8a- b. In the illustrated embodiment, the first set of wheels W1 are arranged in the lowered position PL and the second set of wheels W2 are arranged in the raised position PR, allowing the transport vehicle V to drive along the first drive lanes Di. The set of wheels are lowered and raised when the transport vehicle V is positioned on a track tile module 1 with each wheel W aligned with a corresponding pair of parallel track grooves.

[0078] The modular track system S is easily installed by attaching a plurality of track tile modules 1 to the first base structure 3a arranged on a first transport level L1 ; attaching one or more track tile modules 1 to the elevating structure 4, where the elevating structure 4 is providing access for the transport vehicle V between the first transport level L1 and a second transport level L2 different from the first transport level L1. At least some of the plurality of track tile modules 1 attached to the first base structure 3a and at least some of the one or more track tile modules 1 attached to the elevating structure 4 are configured as tile modules having the same design. In other embodiments, a plurality of track tile modules 1 are attached to the second base structure 3b arranged on the second transport level L2, where at least some of the plurality of track tile modules 1 attached to the first base structure 3a, at least some of the plurality of track tile modules 1 attached to the second base structure 3b, and at least some of the one or more track tile modules 1 attached to the elevating structure 4 are configured as tile modules having the same design.

[0079] As described above, one or more locking arrangements 9 are configured for releasably attaching the track tile modules 1 to the first base structure 3a, the elevating structure 4, and / or the second base structure 3b. The locking arrangements 9 are arranged into a locked state SL for connecting the track tile modules 1 to the first base structure 3a, the elevating structure 4 and / or the second base structure 3b. The locking arrangements 9 are arranged into an unlocked state Su for disconnecting the track tile modules 1 from the first base structure 3a, the elevating structure 4, and / or the second base structure 3b.

[0080] For the different embodiments, the track tile modules 1 may be made of any suitable material, such as plastic materials, composite materials, metallic materials, wood, or wood composites. The track tile modules 1 may be manufactured with the track tile module configurations described in the embodiments above, from plastic materials or composite materials in an injection moulding operation; from aluminium or steel in deep drawing or press forming operations; from plastic materials, composite materials, or metallic materials, in a 3D printing operation; or from plastic materials, composite materials, metallic materials, wood, or wood composites, in a machining operation.

[0081] It will be appreciated that the above description is merely exemplary in nature and is not intended to limit the present disclosure, its application or uses. While specific examples have been described in the specification and illustrated in the drawings, it will be understood by those of ordinary skill in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present disclosure as defined in the claims. Furthermore, modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the essential scope thereof.

[0082] Therefore, it is intended that the present disclosure not be limited to the particular examples illustrated by the drawings and described in the specification as the best mode presently contemplated for carrying out the teachings of the present disclosure, but that the scope of the present disclosure will include any embodiments falling within the foregoing description and the appended claims. Reference signs mentioned in the claims should not be seen as limiting the extent of the matter protected by the claims, and their sole function is to make claims easier to understand.

[0083] REFERENCE SIGNS

[0084] 1 : Track tile module

[0085] 1a: Track tile sub-part

[0086] 1b: T ransition track tile sub-part

[0087] 1 TR: T ransition track tile module

[0088] 2: Grooved track structure

[0089] 2TR: T ransition track structure

[0090] 2a: First pair of parallel track grooves

[0091] 2b: Second pair of parallel track grooves

[0092] 2c: Pair of parallel transition track grooves

[0093] 3a: First base structure

[0094] 3b: Second base structure

[0095] 4: Elevating structure

[0096] 4a: Inclined ramp

[0097] 4b: Elevator

[0098] 5a: Upper side

[0099] 5b: Lower side

[0100] 6a: First longitudinal side edge

[0101] 6b: Second longitudinal side edge

[0102] 7a: First lateral side edge

[0103] 7b: Second lateral side edge

[0104] 8: Alignment structure

[0105] 8a: Protruding section

[0106] 8b: Recessed section

[0107] 9: Locking arrangement

[0108] 9a: Latch

[0109] 10: Reinforcing rib

[0110] Aw: Wheel axis

[0111] D First drive lane

[0112] D2: Second drive lane

[0113] DLA: Lateral direction

[0114] DLO: Longitudinal direction

[0115] G1 : First track gauge G2: Second track gauge

[0116] I: Intersection

[0117] J: Track groove junction

[0118] L1 : First transport level L2: Second transport level

[0119] P1: First wheel position

[0120] P2: Second wheel position

[0121] S: Modular track system

[0122] SL: Locked state Su: Unlocked state

[0123] T: Driving track

[0124] V: Transport vehicle

[0125] W: Wheel

Claims

CLAIMS1. A modular track system (S) comprising a plurality of track tile modules (1) arranged in connection to each other providing a driving track (T) configured for guiding wheels (W) of a self-driving wheeled transport vehicle (V), wherein the track tile modules (1) comprise a grooved track structure (2) having a first pair of parallel track grooves (2a) and a second pair of parallel track grooves (2b) extending in a direction perpendicular to the first pair of parallel track grooves (2a), wherein the grooved track structure (2) of the track tile modules (1) are forming the driving track (T) when the track tile modules (1) are arranged in connection to each other, wherein a plurality of track tile modules (1) are attached to a first base structure (3a) arranged on a first transport level (L1) and one or more track tile modules (1) are attached to an elevating structure (4), wherein the elevating structure (4) is providing access for the transport vehicle (V) between the first transport level (L1) and a second transport level (L2) different from the first transport level (L1), wherein at least some of the plurality of track tile modules (1) attached to the first base structure (3a) and at least some of the one or more track tile modules (1) attached to the elevating structure (4) are configured as tile modules having the same design.

2. The modular track system (S) according to claim 1 , wherein the elevating structure (4) is arranged as an inclined ramp (4a) extending between the first transport level (L1) and the second transport level (L2).

3. The modular track system (S) according to claim 1 , wherein the elevating structure (4) is arranged as an elevator (4b) configured for displacing the one or more track tile modules (1) attached to the elevator (4b) between the first transport level (L1) and the second transport level (L2).

4. The modular track system (S) according to any preceding claim,wherein the modular track system (S) further comprises a plurality of track tile modules (1) attached to a second base structure (3b) arranged on the second transport level (L2), wherein at least some of the plurality of track tile modules (1) attached to the first base structure (3a), at least some of the one or more track tile modules (1) attached to the elevating structure (4), and at least some of the plurality of track tile modules (1) attached to the second base structure (3b), are configured as tile modules having the same design.

5. The modular track system (S) according to any preceding claim, wherein the track tile modules (1) comprise an upper side (5a), a lower side (5b), a first longitudinal side edge (6a), a second longitudinal side edge (6b), a first lateral side edge (7a), and a second lateral side edge (7b), wherein the grooved track structure (2) is arranged on the upper side (5a), wherein the first pair of parallel track grooves (2a) are extending in a longitudinal direction (DLO) of the track tile modules (1) parallel to the first longitudinal side edge (6a) and the second longitudinal side edge (6b), wherein the second pair of parallel track grooves (2b) are extending in a lateral direction (DLA) of the track tile modules (1) parallel to the first lateral side edge (7a) and the second lateral side edge (7b).

6. The modular track system (S) according to claim 5, wherein the track tile modules (1) comprise alignment structures (8) arranged at the first longitudinal side edge (6a), the second longitudinal side edge (6b), the first lateral side edge (7a), and the second lateral side edge (7b), wherein the alignment structures (8) are configured for aligning the grooved track structures (2) when the track tile modules (1) are arranged in connection to each other.

7. The modular track system (S) according to claim 5 or 6, wherein the lower side (5b) comprises one or more integrated reinforcing ribs (10).

8. The modular track system (S) according to any of claims 5 to 7,wherein the extension of the track tile modules (1) in the longitudinal direction (DLO) is greater than the extension of the track tile modules (1) in the lateral direction (DLA).

9. The modular track system (S) according to any preceding claim, wherein the track tile modules (1) comprise one or more locking arrangements (9) configured for releasably attaching the track tile modules (1) to the first base structure (3a), the elevating structure (4), and / or the second base structure (3b), wherein in a locked state (SL) of the locking arrangements (9) the track tile modules (1) are connected to the first base structure (3a), the elevating structure (4), and / or the second base structure (3b), wherein in an unlocked state (Su) of the locking arrangements (9) the track tile modules (1) are disconnected from the first base structure (3a), the elevating structure (4), and / or the second base structure (3b).

10. The modular track system (S) according to claim 9, wherein the locking arrangements (9) are rotatably connected to the track tile modules (1), wherein the locking arrangements (9) comprise a latch (9a) configured for being rotatably displaced between the unlocked state (Su) and the locked state (SL), wherein in the unlocked state (Su) the latch (9a) is disengaged from the first base structure (3a), the elevating structure (4), and / or the second base structure (3b), wherein in the locked state (SL) the latch (9a) is engaging the first base structure (3a), the elevating structure (4), and / or the second base structure (3b).11 . The modular track system (S) according to any preceding claim, wherein the first pair of parallel track grooves (2a) is arranged with a first track gauge (G1) and the second pair of parallel track grooves (2b) is arranged with a second track gauge (G2), wherein the second track gauge (G2) is wider than the first track gauge (G1).

12. The modular track system (S) according to any preceding claim,wherein the modular track system (S) further comprises one or more transition track tile modules (1 TR) comprising a grooved transition track structure (2TR) having a pair of parallel transition track grooves (2c), wherein one or more transition track tile modules (1 TR) are arranged between track tile modules (1) attached to the first base structure (3a) and track tile modules (1) attached to the elevating structure (4), and / or wherein one or more transition track tile modules (1 TR) are arranged between track tile modules (1) attached to the second base structure (3b) and track tile modules (1) attached to the elevating structure (4).

13. The modular track system (S) according to any preceding claim, wherein the track tile modules (1) having the same design are configured as single piece track tile modules, and / or wherein the track tile modules (1) having the same design are configured as multi-piece track tile modules comprising two or more joined track tile sub-parts (1a).

14. A method for installing a modular track system (S) comprising a plurality of track tile modules (1) arranged in connection to each other providing a driving track (T) configured for guiding wheels (W) of a self-driving wheeled transport vehicle (V), wherein the track tile modules (1) comprise a grooved track structure (2) having a first pair of parallel track grooves (2a) and a second pair of parallel track grooves (2b) extending in a direction perpendicular to the first pair of parallel track grooves (2a), wherein the grooved track structure (2) of the track tile modules (1) are forming the driving track (T) when the track tile modules (1) are arranged in connection to each other, wherein the method comprises the steps: attaching a plurality of track tile modules (1) to a first base structure (3a) arranged on a first transport level (L1); attaching one or more track tile modules (1) to an elevating structure (4), wherein the elevating structure (4) is providing access for the transport vehicle (V) between the first transport level (L1) and a second transport level (L2) different from the first transport level (L1); wherein at least some of the plurality of track tile modules (1) attached to the first base structure (3a) and at least some of the one or more track tile modules (1) attached to the elevating structure (4) are configured as tile modules having the same design.

15. The method according to claim 14, wherein the method further comprises the step: attaching a plurality of track tile modules (1) to a second base structure (3b) arranged on the second transport level (L2), wherein at least some of the plurality of track tile modules (1) attached to the first base structure (3a), at least some of the plurality of track tile modules (1) attached to the second base structure (3b), and at least some of the one or more track tile modules (1) attached to the elevating structure (4), are configured as tile modules having the same design.

16. The method according to claim 14 or 15, wherein the track tile modules (1) comprise one or more locking arrangements (9) configured for releasably attaching the track tile modules (1) to the first base structure (3a), the elevating structure (4) and / or the second base structure (3b), wherein the method further comprises the steps: arranging the locking arrangements (9) into a locked state (SL) for connecting the track tile modules (1) to the first base structure (3a), the elevating structure (4), and / or the second base structure (3b); arranging the locking arrangements (9) into an unlocked state (Su) for disconnecting the track tile modules (1) from the first base structure (3a), the elevating structure (4), and / or the second base structure (3b).

17. The method according to claim 16, wherein the locking arrangements (9) are rotatably connected to the track tile modules (1), wherein the locking arrangements (9) comprise a latch (9a) configured for being rotatably displaced between the unlocked state (Su) and the locked state (SL), wherein the method further comprises the steps: rotating the latch (9a) from the unlocked state (Su) to the locked state (SL) for engaging the latch (9a) with the first base structure (3a), the elevating structure (4), and / or the second base structure (3b); rotating the latch (9a) from the locked state (SL) to the unlocked state (Su) for disengaging the latch (9a) from the first base structure (3a), the elevating structure (4), and / or the second base structure (3b).

18. The method according to any of claims 14 to 17,wherein the modular track system (S) further comprises one or more transition track tile modules (1 TR) comprising a grooved transition track structure (2TR) having a pair of parallel transition track grooves (2c), wherein the method further comprises the steps: arranging one or more transition track tile modules (1 TR) between track tile modules (1) attached to the first base structure (3a) and track tile modules (1) attached to the elevating structure (4); and / or arranging one or more transition track tile modules (1 TR) between track tile modules (1) attached to the second base structure (3b) and track tile modules (1) attached to the elevating structure (4).

19. The method according to any of claims 14 to 18, wherein the track tile modules (1) having the same design are configured as single piece track tile modules, and / or wherein the track tile modules (1) having the same design are configured as multi-piece track tile modules comprising two or more joined track tile sub-parts (1a).

Images