Carriage assembly for a railway freight train

Abstract

Shown and described is a wagon arrangement (1) for a railway freight train, comprising a wagon (3) which has a container storage space (13) for a container on its upper side, wherein the container storage space (13) has at least one support surface (29) for the container located in a support plane (31), wherein the support surface (29) is provided on a frame structure (7) of the wagon, and a power supply unit (5) for supplying power to a container loaded on the wagon (3), wherein the power supply unit (5) comprises a support structure (25) and at least one power supply component fastened to the support structure (25), wherein the support structure (25) is adapted to be detachably fastened to the frame structure (7) in such a way that the at least one power supply component is arranged below the support plane (31) and the power supply unit (5) does not protrude upwards beyond the support plane (31).

Description

[0001] The present invention relates to a wagon arrangement for a railway freight train.

[0002] The wagon arrangement can, for example, form part of an articulated wagon arrangement. Articulated wagon assemblies are known from the prior art, for example from WO 2018 / 190718 A2. Such articulated wagon assemblies are intended, among other things, to accommodate containers intended for the transport of temperature-controlled goods, such as reefer containers, tank containers, refrigerated swap bodies or refrigerated semi-trailers. Such containers place high demands on the energy supply, as they have a high energy requirement to operate the cooling or heating system and, on the other hand, must ensure a closed cooling or heating chain, i.e. they require an uninterrupted energy supply not only while driving, but also when stationary and during shunting and transshipment operations.Therefore, a power supply via neighboring cars, a locomotive or an overhead line is not ideal, as an uninterrupted power supply is then not possible, or at least not without complications.

[0003] Articulated vehicle assemblies are also known that have power supply units with batteries. However, due to the high energy requirements of the containers, such battery-operated power supply units are relatively large, making the accommodation of the power supply unit a challenge. According to one known solution, the power supply unit is housed below the container parking space. However, this solution has the disadvantage that the support surfaces for the container floor are arranged at a greater height below the container parking space than in articulated vehicle assemblies without a power supply unit in order to make room for the power supply unit. Therefore, due to the fixed height restriction of a railway freight train, there is less space overall for the containers or certain containers cannot be transported.

[0004] Against this background, it is the object of the present invention to provide a wagon arrangement with which an uninterrupted energy supply of loaded containers is easily possible even when stationary and during shunting operations and which does not entail any additional height restrictions for containers compared to previously known wagon arrangements.

[0005] The object is achieved by a wagon arrangement for a railway freight train having the features of patent claim 1. Preferred embodiments of the wagon arrangement are the subject of the subclaims.

[0006] Thus, the wagon arrangement comprises a wagon having a container storage space for a container on its upper side. The wagon is adapted for transporting containers – preferably including semi-trailers – and can in particular be a so-called container carrying wagon (CTW), wherein the containers can be, for example, so-called reefer containers, tank containers, refrigerated swap bodies, or refrigerated semi-trailers. In addition to the one wagon, the wagon arrangement can also comprise one or more further wagons, wherein the one wagon is then preferably coupled to one or two adjacent wagons in an articulated manner about a vertical articulation axis via an articulated coupling, and the wagons coupled to one another in this way can be supported in the region of the respective articulated coupling at their mutually facing ends, preferably on a common bogie, in particular a Jakobs bogie, in order to form an articulated wagon arrangement.In addition to the single container storage space, the wagon can have a separate container storage space for another container, or it can accommodate multiple containers in the single container storage space. This has the advantage that several containers can be transported with one wagon.

[0007] The container parking space has at least one support surface for the container, which support surface is provided on a frame structure of the wagon. A support surface is understood to be a surface of the frame structure of the wagon on which a container arranged in the container parking space rests, i.e. is in direct contact with the frame structure of the wagon. If more than one support surface is provided, a container arranged in the container parking space rests on each of these support surfaces, which are all on the same support plane. If several containers are arranged in the container parking space, the several containers each rest on several of these support surfaces, which are on the same support plane. In the event that several container parking spaces are arranged on the wagon, the several container parking spaces each have their own support surfaces.Each of the support surfaces can preferably be provided on a respective projecting section of the frame structure, which is either formed integrally with the rest of the frame structure or provided as a separate component that is inseparably or detachably attached to the rest of the frame structure. In the case of multiple support surfaces, these are distributed over the area of ​​the frame structure corresponding to the container parking space, and preferably over the entire length and width of the container parking space, so that secure accommodation of the container or multiple containers on the multiple support surfaces is enabled. If, on the other hand, only one support surface is provided, its shape and dimensions must also ensure secure accommodation of the container. This has the advantage that the support surface does not have to be formed over the entire length and width of the container, i.e. that the container does not rest completely on the frame structure.A frame structure refers to the frame of the wagon, which is the supporting structure of the wagon and preferably has at least two longitudinal and two transverse struts. The frame structure can also have additional longitudinal and transverse struts, so that the frame structure of the wagon can have a truss-like structure consisting of longitudinal and transverse struts with gaps between them. This allows a space to be created in the frame structure below the container arranged in the container parking space to accommodate the power supply unit.

[0008] The wagon assembly further comprises a power supply unit for supplying power to a container loaded on the wagon. The power supply unit serves to provide preferably autonomous power, in particular with electrical power, to containers loaded on the wagon. Autonomous power supply in this context means a power supply that operates without, or at least without a continuous power supply from, a locomotive, another wagon, or an overhead line, preferably without a corresponding connection to the locomotive, the other wagons, or the overhead line. This enables an uninterrupted power supply to loaded containers, even during standstill and shunting operations.

[0009] The power supply unit has a support structure and at least one power supply component fastened to the support structure. A support structure is understood to be a holder that is configured, on the one hand, to hold one or more power supply components and, on the other hand, is adapted to be detachably connected to the frame structure so that the power supply components can be held on the trolley. The support structure can have a frame, preferably with two cross members, which can be placed from above onto the frame structure of the trolley so that the support structure rests with direct contact on the frame structure and each of the power supply components is arranged in a space in the frame structure. The frame can have a steel frame construction. By means of such a support structure, the power supply unit can be reliably fastened to the trolley.

[0010] Particularly preferably, the support structure has projections or fastening elements that enable a positive or non-positive connection of the power supply unit to the frame structure. The positive or non-positive connection can serve to limit movement or displacement of the power supply unit in at least one direction relative to the frame structure. This makes it possible to connect the power supply unit to the frame structure without fastening means. Furthermore, it is possible to limit movement of the power supply unit relative to the frame structure even when the carriage assembly is in motion.

[0011] The support structure is adapted to be releasably attached to the frame structure such that the at least one power supply component is arranged below the support plane and the power supply unit does not protrude upwards above the support plane. This means that the power supply unit is arranged vertically at most on the support plane. More precisely, the power supply unit lies vertically on or below the support plane, so that the support plane forms the highest support point of the container.The fact that the power supply unit does not protrude above the support level means that the container parking space does not have to be raised and does not lose any additional height, as at least one support surface of the container parking space remains on the frame structure and is neither changed nor raised by the power supply unit nor by an additional adapter unit. This also means that the free space already available in the frame structure of the wagon can be used to accommodate the power supply unit. Furthermore, the power supply unit can be declared as a loading unit in combined transport, meaning that the power supply unit is not considered to be part of the wagon. This eliminates the need to adapt the wagon’s registration and therefore any changes or additions to the vehicle’s registration.

[0012] Extension of the existing wagon number if the power supply unit is combined with an already approved wagon.

[0013] In summary, it can therefore be stated that a wagon arrangement is provided with which an uninterrupted power supply to loaded containers is easily possible even when stationary and during shunting operations and which does not entail any additional height restrictions for containers compared to previously known wagon arrangements.

[0014] In a preferred embodiment, the power supply unit comprises a plurality of power supply components attached to the support structure. With a plurality of power supply components attached to the support structure, a power supply unit with particularly high energy output and high reliability can be provided. The plurality of power supply components can comprise redundant power supply components to increase reliability.

[0015] In a preferred embodiment, the support structure has an upper side lying in a support structure plane, wherein the support structure plane and the support plane correspond to one another when the support structure is fastened to the frame structure. The upper side of the support structure is the side facing the container when the power supply unit is connected to the frame structure and a container is placed on the support surface. Because the support plane and the support structure plane correspond to one another, a flat support surface can be created for the container, so that the container can rest on the support surface and on the support structure. This ensures that the container parking space does not lose any height, so that the maximum loading capacity for containers to be loaded is maintained.On the other hand, this ensures that the container can press the power supply unit against the frame structure so that the power supply unit is held firmly, preferably immovably, between the frame structure and the container.

[0016] In a preferred embodiment, the support structure has an upper side lying in a support structure plane, wherein the support structure plane lies vertically below the support plane when the support structure is fastened to the frame structure. The upper side of the support structure is the side facing the container when the power supply unit is connected to the frame structure and a container is placed on the support surface. In other words, the thickness or height of the support structure in the vertical direction is selected such that the support structure plane lies below the support plane. This makes it possible for the support structure plane not to have a fixed thickness or height, but to have any height or thickness as long as the support structure plane lies below the support plane.The fact that the supporting structure level is located below the support level also ensures that the container parking space does not lose any height, thus maintaining the maximum loading capacity for containers to be loaded. This also makes it possible to attach the power supply unit to the frame structure even if a container has already been placed on the support surface.

[0017] In a preferred embodiment, the frame structure has a plurality of spaced-apart projections, wherein each of the at least one support surface is provided on a different one of the projections, and the support structure of the power supply unit, after being fastened to the frame structure, is arranged between the plurality of projections on the frame structure. A container loaded on the trolley must generally be fastened to the trolley to prevent the container from slipping or even falling during transport. For this purpose, the trolley can have fastening means attached to the frame structure or formed integrally therewith, which can form the plurality of spaced-apart projections. The plurality of spaced-apart projections have the at least one support surface, such that the support plane is raised relative to the rest of the frame structure.This allows a vertical gap to be created between the plurality of spaced-apart protrusions, extending from the frame structure to the support plane, to which the support structure of the power supply unit can be attached. The support structure of the power supply unit has a maximum height equal to the plurality of spaced-apart protrusions, thus creating no additional height restrictions for containers.

[0018] In a preferred embodiment, the frame structure of the trolley has at least one intermediate space, and each of the at least one power supply component is arranged in one of the at least one intermediate space after the support structure is attached to the frame structure. The at least one intermediate space is preferably formed between transverse and / or longitudinal struts of the frame structure and is located below the container storage space or below the support surface. The at least one intermediate space is sufficiently large to accommodate one or more power supply components that can be used to supply the container with sufficient electrical energy.

[0019] In a preferred embodiment, the at least one intermediate space is arranged below the container parking space. This allows the power supply unit to be arranged below the container without reducing the height of the container parking space, thus preventing additional height restrictions for containers.

[0020] In a preferred embodiment, the frame structure of the wagon has fastening pins for receiving the container, wherein each of the fastening pins protrudes upwards from one of the at least one support surfaces. It is also preferred if the fastening pins are container pins according to standard UIC 571-4. Such fastening pins are provided as standard at the container locations for fastening the containers. Preferably, pin receptacles according to standard UIC 571-4 are formed on the container. Such pin receptacles are provided as standard at the bottom of the container for engagement with the fastening pins. The use of such standardized connecting elements has the advantage that they do not require special certification.

[0021] In a preferred embodiment, at least one of the at least one power supply components has an energy storage device. With such an energy storage device, the containers can be supplied with energy for a specific period of time completely independently of external energy sources. Furthermore, such an energy storage device can be used in rechargeable form as an intermediate storage device when connected to an external power supply.

[0022] In a preferred embodiment, the energy storage device comprises at least one rechargeable battery. The at least one rechargeable battery preferably comprises between three and seven high-performance LiFePO4 battery strings, each with a capacity of 9 kWh and a modular storage capacity of 27 kWh to 63 kWh. Such a rechargeable battery can provide electrical energy for the containers when no external power supply is available and can be charged when electrical energy is available, either through internal power generation or via external power sources.

[0023] In a preferred embodiment, at least one of the at least one power supply components has an electric generator for charging the battery. The electric generator preferably comprises a 22 kW AC asynchronous generator for charging the battery. The generator can be driven, for example, by kinetic energy from the movement of the vehicle. In this way, the battery can be charged with a generator specifically provided in the power supply unit, for example, while the vehicle is moving.

[0024] In a preferred embodiment, the generator is operated with hydraulic pressure. Hydraulic pressure is particularly suitable for operating a generator and can be easily generated, for example, from kinetic energy.

[0025] In a preferred embodiment, the carriage arrangement comprises a hydraulic pump for providing the hydraulic pressure, which is mounted on and driven by a wheel set of the carriage. The hydraulic pump can comprise an axial piston fixed-displacement pump, which is mounted on and driven by a wheel set of the carriage. The hydraulic pump is preferably attached to a wheel hub, where it absorbs the kinetic energy from the rotation of the wheel. To connect the hydraulic pump to the generator, hydraulic hoses, in particular two hydraulic hoses, are preferably provided, which transport the hydraulic pressure from the hydraulic pump to the generator. With such a hydraulic pump on the wheel set, the hydraulic pressure required by the generator to generate power can be provided easily and reliably, without extensive modifications to the carriage being necessary.

[0026] In a preferred embodiment, at least one of the at least one power supply components has a mains charger for charging the battery with external mains power and at least one associated charging port for connection to an external mains power connection. The mains charger is preferably a 10 kW HF mains charger for charging the battery with external mains power. The power supply components preferably also comprise at least one associated charging port, preferably two 5-pin CEE charging sockets, for connecting the mains charger to an external mains power connection. With such a mains charger and additional charging port, the battery can be charged via an external power supply. The battery can be charged via the mains charger in addition to charging using a generator or independently of it.

[0027] In a preferred embodiment, at least one of the at least one power supply component has a load connection for connection to a corresponding connection on a container. The load connection preferably has four 4-pin and / or 5-pin CEE load sockets for connection to a corresponding connection on a container for supplying a consumer, such as a cooling or heating system. In this way, each container can be easily and quickly connected to the power supply unit, even if two containers are loaded per wagon.

[0028] Preferred embodiments of the present invention are explained in more detail below with reference to the drawing. The drawing shows Figure 1 is a schematic representation of a carriage arrangement according to an embodiment of the present invention, Figures 2a and 2b are schematic representations of the carriage arrangement from Figure 1with the power supply unit arranged there, Figures 3a, 3b, 4a and 4b schematic representations of the power supply unit from the Figures 2a and 2b , Figures 5a, 5b, 6a and 6b schematic representations of the supporting structure of the power supply unit from the Figures 3a to 4b , and Figure 7 is a schematic representation of a hydraulic pump for driving the generator from the Figures 3a to 4b .

[0029] In Figure 1A wagon assembly 1 according to the invention for a railway freight train is shown. The wagon assembly 1 comprises a wagon 3 for transporting containers, also called a container wagon (CTW), and a power supply unit 5 for supplying electrical power to containers loaded on the wagon 3. Such containers can be, for example, refrigerated semi-trailers, so-called reefer containers, refrigerated swap bodies, or tank containers. The power supply unit 5 is configured for the autonomous electrical power supply of the containers without recourse to a power supply from a locomotive, another wagon, or an overhead line.

[0030] The wagon 3 has a frame 7 and a wheel set 9 at each end of the frame 7. Each wheel set 9 has several, preferably four, wheels 11, which enable the wagon 3 to move on rails. On the frame structure 7, the wagon 3 has a container storage space 13 for one or more containers. The frame 7 has fastening means in the form of fastening pins 15 for fastening the one or more containers. The fastening pins 15 are designed as container pins according to standard UIC 571-4, as they are standard for fastening containers, and can engage with pin receptacles on the containers, which are designed according to standard UIC 571-4.

[0031] In the Figures 2a and 2b are schematic representations of the carriage arrangement 1 from Figure 1 with the power supply unit 5 arranged there, wherein Figure 2a a schematic plan view of the carriage arrangement 1 and Figure 2ba schematic sectional view along the section AA from Figure 2a shows. In Figure 2a the carriage arrangement 1 is shown, which is connected to a further carriage 3' to form an articulated carriage arrangement, wherein the one carriage 3 and the further carriage 3' are coupled to one another in an articulated manner at least about a vertical articulation axis via an articulated coupling and are supported in the region of the articulated coupling at their mutually facing ends, preferably on a common bogie, in particular a Jakobs bogie, in order to form an articulated carriage arrangement.

[0032] The frame structure 7 is formed by a first longitudinal strut 17, a second longitudinal strut 19, and a plurality of cross struts 21, so that the frame structure 7 of the carriage 3 has a truss-like structure that forms gaps 23 between the first longitudinal strut 17, the second longitudinal strut 19, and the cross struts 21. The power supply unit 5 is at least partially housed in one of the gaps 23. For this purpose, the power supply unit 5 has a support structure 25 with a plurality of power supply components fastened to the support structure 25. The power supply unit 5 has a mains charger 27 attached to the second longitudinal strut 19 for charging with external mains power, as well as at least one associated charging port for connection to an external mains connection. The mains charger 27 is preferably a 10 kW RF mains charger for charging the power supply unit 5 with external mains power.

[0033] A support structure 25 is understood to mean a holder which is, on the one hand, designed to hold one or more power supply components and, on the other hand, is adapted to be detachably connected to the frame structure 7 so that the power supply components can be held on the carriage 3. As in Figure 2b As can be seen, the power supply unit 5 with the support structure 25 rests on the frame structure 7 or on the first longitudinal strut 17 and the second longitudinal strut 19. Also in Figure 2bShown are the fastening pins 15, at whose proximal ends a support surface 29 is arranged, which lies in a support plane 31. The support surface 29 serves to accommodate a container. The support surface 29 is understood to be the surface of the frame structure 7 of the carriage 3 on which the container rests, i.e. is in direct contact with the frame structure 7 of the carriage 3. The support surface 29 is formed by several partial surfaces, each at the proximal ends of the fastening pins 15. This has the advantage that the support surface 29 does not have to be formed over the entire length and width of the container, i.e. that the container does not rest over its entire surface on the frame structure 7. As a result, a space for accommodating the power supply unit 5 can be created below the container on the frame structure 7.

[0034] The support structure 25 is adapted to be detachably fastened to the frame structure 7 in such a way that the at least one energy supply component is arranged below the support plane 31 and the energy supply unit 5 does not protrude upwards beyond the support plane 31. This means that the support structure 25 of the energy supply unit 5 is arranged at most on the support plane 31 in the vertical direction. More precisely, the support structure 25 lies vertically on or below the support plane 31, so that the support plane 31 forms the highest support point of the container. The fact that the support structure 25 does not protrude upwards beyond the support plane 31 ensures that the container parking space 13 does not lose any additional height, since the support surface 29 of the container parking space 13 remains on the frame structure 7 and is neither changed nor disturbed by the energy supply unit 5 nor by an additional adapter unit.is increased. In this way, an already free gap-shaped space in the frame structure 7 of the carriage can also be used to accommodate the power supply unit 5.

[0035] The support structure 25 has an upper side 35 lying in a support structure plane 33, wherein the support structure plane 33 and the support plane 31 correspond to one another. The upper side 35 of the support structure 25 is the side facing the container when the energy supply unit 5 is connected to the frame structure 7 and a container is placed on the support surface 29. Because the support plane 31 and the support structure plane 33 correspond to one another, a flat support surface 29 can be created for the container, so that the container can rest on the support surface 29 and on the support structure 25. This ensures, on the one hand, that the container parking space 13 does not lose any height, so that the maximum loading capacity for containers to be loaded is maintained.On the other hand, this ensures that the container can press the energy supply unit 5 against the frame structure 7, so that the energy supply unit 5 is held firmly, preferably immovably, between the frame structure 7 and the container.

[0036] In the Figures 3a, 3b , 4a and 4b are schematic representations of the power supply unit 5 from the Figures 2a and 2b shown, where in Figure 3a a schematic perspective view of the power supply unit 5, in Figure 3b a schematic plan view of the power supply unit 5, in Figure 4a a schematic side view of the power supply unit 5 and in Figure 4bA schematic rear view of the power supply unit 5 is shown. The support structure 25 has a first cross member 37 and a second cross member 39, wherein the two cross members 37, 39 are placed from above on the frame structure 7 of the carriage 3, so that the support structure 25 rests with direct contact on the frame structure 7 and a power supply component is arranged in a space 23 of the frame structure 7. By means of such a support structure 25, the power supply unit 5 can be reliably attached to the carriage 3.

[0037] The first crossbeam 37 and the second crossbeam 39 are firmly connected to one another via several cross connections 41, whereby the energy supply components can be attached either to the crossbeams 37, 39 or the cross connections 41. The energy supply unit 5 has an energy storage device 43, preferably in the form of at least one rechargeable battery with high-performance battery strings made of LiFePO4, each with 9 kWh and a modular storage capacity of 27 kWh to 63 kWh. With such an energy storage device 43, the containers can be supplied with energy for a certain period of time, completely independently of external energy sources. Furthermore, such an energy storage device 43 can be used in rechargeable form as an intermediate storage device when connected to an external energy supply. The energy supply also has an electric generator 45 for charging the energy storage device 43.The at least one electrical generator 45 preferably comprises a 22 kW AC asynchronous generator for charging the energy storage device 43. The generator 45 can be driven, for example, by kinetic energy from the movement of the carriage 3. In this way, the energy storage device 43 can be charged with a generator 45 specifically provided in the energy supply unit 5, for example, while the carriage 3 is traveling.

[0038] The power supply unit 5 has a load connection 47 for connection to a corresponding connection on a container, wherein the load connection 47 is attached to the second cross member 39 via two support struts 49. The load connection 47 preferably has four CEE load sockets, 4-pin and / or 5-pin, for connection to a corresponding connection on a container for supplying a consumer, such as a cooling or heating system. In this way, each container can be easily and quickly connected to the power supply unit 5, even if two containers are loaded per wagon 3.

[0039] How best to Figures 4a and 4bAs can be seen, the first cross member 37 and the second cross member 39 each have projections 51 on their undersides, via which a positive connection of the energy supply unit 5 to the frame structure 7 is enabled. The projections 51 can be connected to the support structure 25 via fastening means, for example screws. The positive connection can serve to limit a movement or displaceability of the energy supply unit 5 in at least one direction relative to the frame structure 7. This makes it possible to connect the energy supply unit 5 to the frame structure 7 without fastening means. Furthermore, it is achieved that a movement of the energy supply unit 5 relative to the frame structure 7 can be limited even when the carriage arrangement 1 is in motion.

[0040] In the Figures 5a, 5b , 6a and 6bare schematic representations of the supporting structure 25 of the power supply unit 5 from the Figures 3a to 4b shown, where in Figure 5a a schematic perspective view of the supporting structure 25, in Figure 5b a schematic plan view of the supporting structure 25, in Figure 6a a schematic side view of the supporting structure 25 and in Figure 6b a schematic front view of the support structure 25 is shown.

[0041] In Figure 7 is a schematic representation of a hydraulic pump 53 for driving the generator 45 from the Figures 3a to 4bshown. To provide the hydraulic pressure, the hydraulic pump 53 is mounted on a wheel set 9 and driven by it. The hydraulic pump 53 can have an axial piston fixed displacement pump. The hydraulic pump 53 is attached to the wheel hub 9 such that it absorbs the kinetic energy from the rotation of the wheel 11 there. To connect the hydraulic pump 53 to the generator 45, hydraulic hoses 55, in particular two hydraulic hoses 55, are provided, which transport the hydraulic pressure from the hydraulic pump 53 to the generator 45. With such a hydraulic pump 53 on the wheel set 9, the hydraulic pressure required by the generator 45 to generate power can be provided easily and reliably, without extensive modifications to the carriage 3 being necessary.

[0042] With the wagon arrangement 1 described above, an uninterrupted power supply to loaded containers can be easily ensured, even during standstill and shunting operations. Furthermore, the free space 23 in the frame structure 7 of the wagon 3 is used to accommodate the power supply unit 5. This space 23 is sufficiently large to accommodate a power supply unit 5, which can supply the cooling or heating system of a container for temperature-controlled goods. At the same time, no additional height is created at the container parking space 13 by the power supply unit 5 or additional adapter units, thus maximizing the space available for the containers. List of reference symbols

[0043] 1Wagon arrangement 3, 3'Wagon 5Energy supply unit 7Frame 9Wheelset 11Wheel 13Container parking space 15Fastening pin 17First longitudinal strut 19Second longitudinal strut 21Cross strut 23Gap 25Supporting structure 27Mains charger 29Support surface 31Support level 33Supporting structure level 35Top 37First cross member 39Second cross member 41Cross connection 43Energy storage 45Generator 47Load connection 49Retaining struts 51Protrusions 53Hydraulic pump 55Hydraulic hose

Claims

1. Wagon arrangement (1) for a railway freight train comprising a wagon (3) which has a container storage space (13) for a container on its upper side, wherein the container storage space (13) has at least one support surface (29) for the container lying in a support plane (31), wherein the support surface (29) is provided on a frame structure (7) of the wagon, and a power supply unit (5) for supplying power to a container loaded on the wagon (3), wherein the power supply unit (5) comprises a support structure (25) and at least one power supply component fastened to the support structure (25), wherein the support structure (25) is adapted to be detachably fastened to the frame structure (7) in such a way that the at least one power supply component is arranged below the support plane (31) and the power supply unit (5) does not protrude upwards beyond the support plane (31).

2. Carriage arrangement (1) according to claim 1, wherein the power supply unit (5) has a plurality of power supply components attached to the support structure (25).

3. Carriage arrangement (1) according to claim 1 or 2, wherein the support structure (25) has an upper side (35) lying in a support structure plane (33), wherein the support structure plane (33) and the support plane (31) correspond to one another when the support structure (25) is fastened to the frame structure (7).

4. Carriage arrangement (1) according to claim 1 or 2, wherein the support structure (25) has an upper side (35) lying in a support structure plane (33), wherein the support structure plane (33) lies vertically below the support plane (31) when the support structure (25) is fastened to the frame structure (7).

5. Carriage arrangement (1) according to one of claims 1 to 4, wherein the frame structure (7) has a plurality of projections spaced apart from one another, each of the at least one support surface (29) is provided on a different one of the projections and the support structure (25) of the power supply unit (5) is arranged between the plurality of projections on the frame structure (7) after attachment to the frame structure (7).

6. Carriage arrangement (1) according to one of claims 1 to 5, wherein the frame structure (7) of the carriage (3) has at least one intermediate space (23) and each of the at least one power supply component is arranged in one of the at least one intermediate space (23) after the support structure (25) has been fastened to the frame structure (7).

7. Carriage arrangement (1) according to claim 6, wherein the at least one intermediate space (23) is arranged below the container parking space (13).

8. Carriage arrangement (1) according to one of claims 1 to 7, wherein the frame structure (7) of the carriage (3) has fastening pins (15) for receiving the container, each of the fastening pins (15) projecting upwards from one of the at least one support surface (29).

9. Carriage arrangement (1) according to one of claims 1 to 8, wherein at least one of the at least one energy supply component has an energy storage device (43).

10. Carriage arrangement (1) according to claim 9, wherein the energy storage device (43) comprises at least one rechargeable battery.

11. Carriage assembly (1) according to claim 10, wherein at least one of the at least one power supply component comprises an electric generator (45) for charging the battery.

12. Carriage assembly (1) according to claim 11, wherein the generator (45) is operated with hydraulic pressure.

13. Carriage assembly (1) according to claim 12, wherein the carriage assembly (1) comprises a hydraulic pump (53) mounted on and driven by a wheel set (9) for providing the hydraulic pressure.

14. Carriage arrangement (1) according to one of claims 10 to 13, wherein at least one of the at least one power supply component has a mains charger (27) for charging the battery with external mains power and at least one associated charging connection for connection to an external mains connection.

15. Carriage arrangement (1) according to one of claims 10 to 14, wherein at least one of the at least one power supply component has a load connection (47) for connection to a corresponding connection on a container.

Images