Vehicle trailer with a lifting platform

Abstract

The invention relates to a vehicle trailer, in particular a semitrailer, designed with a floor, a ceiling, two side walls, a rear wall and a front wall, wherein at least the front wall is designed to be openable. At least one side wall is designed as an extendable side wall and so, in the extended state of the extendable side wall, the internal volume of the vehicle trailer is increased, wherein a lifting platform is arranged in the floor of the vehicle trailer, wherein the lifting platform is recessed in the floor of the vehicle trailer and is designed such that the at least one extendable side wall can be retracted and extended via the lifting platform recessed in the floor.

Description

[0001] title

[0002] VEHICLE TRAILER WITH LIFTING PLATFORM

[0003] The invention relates to a vehicle trailer according to the preamble of claim 1 and a method according to claim 13. Such a vehicle trailer, in particular in the form of a semi-trailer, is typically designed with an enclosed compartment. Furthermore, a lifting platform is arranged in the floor of the vehicle trailer. The vehicle trailer is thus designed as a mobile motor vehicle workshop.

[0004] A traditional auto repair shop is a fixed location. For maintenance and repairs, customers drive their vehicles to the respective repair shop. For customers, this means travel time to the shop and waiting time during the repair. For the repair shop, this means organizational effort, such as providing pick-up and drop-off services, supplying and organizing rental cars, etc. This represents a considerable amount of work for large commercial and fleet customers in particular.

[0005] The present invention is therefore based on the objective of proposing a solution that reduces the effort involved in providing services to a motor vehicle repair shop.

[0006] This problem is solved by a vehicle trailer according to claim 1 and by a method according to claim 13. Preferred embodiments of the vehicle trailer according to the invention are found in reverse-referenced claims 2 to 12. A preferred embodiment of the method according to the invention is found in claim 14. Herein, the wording of all claims is explicitly incorporated into the description by reference.

[0007] The vehicle trailer according to the invention comprises at least a floor, a ceiling, two side walls, a rear wall, and a front wall. The front wall is designed to be opened so that a motor vehicle requiring repair can be driven into the vehicle trailer. At least one side wall is designed as an extendable side wall, so that when the extendable side wall is extended, the interior volume of the vehicle trailer is increased. Furthermore, a lifting platform is integrated into the floor of the vehicle trailer.

[0008] 34878-P-WO Le / sp 23.06.2025. The lifting platform is recessed into the floor of the vehicle trailer and designed in such a way that at least one extendable side wall can be extended and retracted over the lifting platform recessed in the floor. Preferably, the lifting platform is designed as a scissor lift.

[0009] This results in the following advantages:

[0010] In contrast to a stationary vehicle repair shop, the vehicle trailer according to the invention offers advantages in terms of service and logistics as a mobile vehicle repair shop and overcomes the disadvantages listed above. The at least one extendable side wall provides a sufficiently large work area inside the trailer, independent of weather and time of day, enabling work to be carried out as in a stationary vehicle repair shop. The lifting platform simultaneously provides the necessary infrastructure within this mobile work area, independent of weather and time of day. The performance of the mobile vehicle repair shop is comparable to that of a stationary vehicle repair shop. At the same time, when the at least one extendable side wall is retracted, the trailer can be easily transported on public roads.

[0011] Preferably, the vehicle trailer is equipped as a workshop for repairing motor vehicles and contains all the necessary tools, equipment, and infrastructure. Preferably, the lifting platform has a lifting capacity of 3.5 liters.

[0012] The vehicle trailer according to the invention thus constitutes a mobile motor vehicle workshop and can be used virtually anywhere. This means that organizational effort is eliminated both for the customer in the form of travel and waiting times, and for the motor vehicle workshop in the form of pick-up and delivery services. For example, seasonal tire changes (summer / winter) can be carried out directly on-site at the customer's location. Furthermore, unregistered motor vehicles such as collector cars or classic cars can be repaired directly on-site without having to be driven on public roads. The mobile motor vehicle workshop can also be operated on-site at events in the areas of motorsport, classic cars, vehicle shows, etc., with minimal effort.

[0013] 34878-P-WO Le / sp 23.06.2025 Preferably, the vehicle trailer is designed as a semi-trailer. This allows the necessary mobility to be achieved easily, as the vehicle trailer can be coupled to a conventional tractor unit and moved on public roads. Preferably, the semi-trailer is designed such that part of the weight rests on the axle of the semi-trailer and part rests on the axle of the tractor unit via the fifth wheel. The weight distribution varies depending on the design of the vehicle trailer and, in particular, the number of axles. In principle, the weight distribution can be implemented as known from the prior art.

[0014] The front wall is preferably the wall facing a tractor and the rear wall is the wall on the side facing away from the tractor.

[0015] Connecting devices are provided to link the trailer and the tractor unit, preferably to couple the trailer to a conventional fifth wheel coupling of the tractor unit. These connecting devices are preferably in the form of pivoting connecting arms, hereinafter also referred to as a pivoting gooseneck. The connecting arms are designed such that the connecting piece between the fifth wheel coupling of the tractor unit and the trailer, preferably a kingpin, can be pivoted upwards over the trailer. The connecting arms are preferably hydraulically pivotable.

[0016] In conventional semi-trailers, a coupling element, for example in the form of a kingpin, is typically arranged at the front of the floor. Such semi-trailers are designed so that the semi-trailer's receiving area rests at least partially on the fifth wheel of a tractor unit and is horizontally pivotable to the fifth wheel by means of the coupling element. Therefore, the floor of the supporting area of ​​such semi-trailers is located relatively high above the road surface, usually higher than the diameter of a truck tire. In contrast, the vehicle trailer according to the invention is preferably designed such that the front wall, i.e., the wall of the receiving area facing the tractor unit, extends as far down as possible and can be opened all the way to the floor. The vehicle trailer is thus designed without a bearing surface for the receiving area.

[0017] 34878-P-WO Le / sp 23.06.2025 Connecting means are provided for attaching the trailer to a conventional fifth wheel coupling of the tractor unit. The connecting means are preferably in the form of pivoting connecting arms, hereinafter also referred to as a pivoting gooseneck, preferably pivotable about a pivot axis parallel to the front wall and parallel to the ground. The connecting arms have an elongated shape and are pivotably connected to the trailer at one end. The connecting arms are designed such that the coupling element, preferably a kingpin, can be pivoted upwards, preferably over the trailer, as the connecting piece between the fifth wheel coupling of the tractor unit and the trailer.In particular, the connecting arms are pivotable by an angle of approximately 35° to 90°, preferably 35° to 60°, and especially preferably 90°, between a transport position and an operating position. The connecting arms are preferably hydraulically pivotable. This offers the advantage that the vehicle trailer can be designed such that vehicles can enter the interior in the operating position without having to overcome a significant height difference.

[0018] Preferably, the swiveling gooseneck is U-shaped, so that a vehicle can more easily drive into the mobile workshop when the U-shaped gooseneck is swung upwards. The swung-up gooseneck makes this possible in the first place, as it would otherwise block the entrance at the front of the vehicle trailer.

[0019] Preferably, the pivoting gooseneck is U-shaped, with two connecting arms positioned on the front wall of the vehicle trailer, pointing away from the trailer. These two connecting arms are directly connected to each other at the end furthest from the trailer, or via a cross-connection, and carry the coupling element, preferably a kingpin. In its operating position, the pivoted gooseneck allows a motor vehicle to drive into the trailer, as the gooseneck would otherwise block access at the front of the trailer.

[0020] In a preferred embodiment of the invention, the vehicle trailer is equipped with an entry ramp. The entry ramp is formed by the front wall by the

[0021] 34878-P-WO Le / sp 23.06.2025 The front wall is designed to pivot. Preferably, the front wall pivots towards the ground about a pivot axis that corresponds to the lower edge of the front wall of the vehicle trailer. The front wall thus simultaneously serves as a fold-out entrance ramp. In the folded-out position, the entrance ramp forms the front wall.

[0022] With the ramp extended, this opening in the trailer serves as an entry and exit point for the vehicle being repaired. This reduces the distance between the trailer and the ground and minimizes the ramp's angle of approach. The trailer's axle is located at the rear, away from the towing vehicle, forming an obstacle that cannot be driven over by the vehicles being repaired.

[0023] In a preferred embodiment of the invention, both side walls are designed as extendable side walls. Both extendable side walls can be extended and retracted via the lifting platform recessed in the floor. This offers the advantage that, when both extendable side walls are extended, the interior volume of the vehicle trailer is further increased.

[0024] Preferably, both side walls of the vehicle trailer are designed as extendable side walls, preferably hydraulically extendable side walls. A key aspect of the invention is that the lifting platform is recessed into the floor of the vehicle trailer, allowing both side walls to be driven over the platform at ground level. This also offers the advantage that the vehicle being repaired can be driven onto the lifting platform at ground level. The combination of extendable side walls and recessed lifting platform provides the vehicle trailer according to the invention with sufficient space for repairs around the vehicle being repaired, while simultaneously requiring only a minimal width for transport, thus allowing the trailer to be registered for road use.

[0025] In a preferred embodiment of the invention, the front wall of the vehicle trailer is equipped with a roller door, preferably an electric roller door. Preferably, the front wall, i.e., the wall facing the tractor unit, is equipped with a roller door.

[0026] 34878-P-WO Le / sp trained on June 23, 2025. This roller door allows the entrance to the vehicle trailer to be closed, for example as weather protection, when the front wall is swung down.

[0027] To operate the vehicle trailer as a vehicle repair shop, the semi-trailer is uncoupled. The semi-trailer is then placed on the ground or, preferably, lowered hydraulically. Preferably, the rear axle of the semi-trailer is retracted electro-hydraulically, and the entire semi-trailer is leveled using four hydraulic supports. This offers the advantage that even on uneven ground, the four hydraulic cylinders level the vehicle trailer to a uniform height.

[0028] In a particularly advantageous embodiment, the trailer has a retractable rear axle, preferably retractable to such an extent that the trailer floor rests on a surface or on support elements. This allows for a particularly quick change from a transport position, in which the trailer is connected to a towing vehicle, to an operating position, in which a motor vehicle can drive into the interior of the trailer.

[0029] Preferably, the trailer has at least two support elements, preferably hydraulic supports, by means of which the trailer can be leveled. Preferably, at least two hydraulic supports are provided in the front area, and more preferably, two additional rear hydraulic supports are provided in the area of ​​the rear axle. This offers the advantage that even on uneven ground, the four hydraulic cylinders level the trailer to a uniform level, thus increasing operational safety. With the rear axle retracted, the trailer rests solely on the hydraulic supports, achieving the lowest possible entry level. Only the provided lifting platform and the wall / floor thickness ensure that the floor of the trailer's interior is slightly above ground level.

[0030] After leveling, the semi-trailer's coupling is uncoupled from the tractor unit and the swiveling gooseneck is tilted upwards using two hydraulic cylinders. This creates sufficient space at the front wall for the entry and exit of a

[0031] 34878-P-WO Le / sp 23.06.2025 A ramp is created for loading a motor vehicle into the semi-trailer. A further advantage is that the ramp's approach angle is kept as low as possible. As described above, this reduces the distance between the vehicle trailer and the ground, and the approach angle of the ramp is kept to a minimum. The combination of unloading the vehicle trailer, the entrance on the side facing the tractor unit, and the swiveling gooseneck for connecting the vehicle trailer and tractor unit creates a gently sloping entrance to the mobile vehicle workshop. This is advantageous so that a vehicle requiring repair can enter the trailer without damaging its bumper. Depending on its design and legal requirements, a vehicle has a minimum ground clearance of approximately 11 cm at the front bumper. Between 11 and 15 cm is typical.Ground clearance at the front bumper: Vans and SUVs can have significantly more ground clearance. Therefore, when the vehicle drives up or down an incline, the bumper can touch the ground at steeper angles and be damaged. This bottoming out is prevented by a flat ramp.

[0032] Alternatively, it is also within the scope of the invention that the roller door for the motor vehicle entering the semi-trailer is provided in the rear wall facing away from the tractor unit.

[0033] In a preferred embodiment of the invention, the vehicle trailer, in particular the front and rear walls, has a maximum external width of 2.55 m, preferably 2.5 m. The supporting frame is designed such that it is only this wide in the driving position to allow for road approval, but still provides the greatest possible passage width for a motor vehicle. This has the advantage that road approval according to the provisions of the road traffic regulations is possible. Preferably, the roller door has a minimum width of 2.0 m, more preferably a minimum width of 2.2 m, and particularly preferably a minimum width of 2.272 m. This has the advantage that the side mirrors of conventional motor vehicles do not need to be folded in when entering. Preferably, an entrance height of at least 2.2 m, more preferably 2.6 m, is provided. This ensures that there is sufficient lateral clearance in the entrance area for conventional motor vehicles.

[0034] 34878-P-WO Le / sp 23.06.2025 In a preferred embodiment of the invention, a tire mounting and balancing machine is provided in the vehicle trailer. Preferably, various drawer systems and storage compartments for tools are also installed, so that the vehicle trailer essentially has the standard equipment of a motor vehicle workshop.

[0035] In a preferred embodiment of the invention, the vehicle trailer includes a photovoltaic system. Preferably, the photovoltaic system is arranged on the roof of the vehicle trailer. Most preferably, supply batteries are provided, which are arranged and configured to interact with the photovoltaic system so that the photovoltaic system charges the supply batteries. Preferably, the photovoltaic system has a peak power of approximately 2,000 W. The corresponding supply battery is preferably designed as three 48 V / 100 Ah lithium-ion batteries. This offers the advantage that the vehicle trailer is self-sufficient and does not require an external power supply, while simultaneously being supplied with sustainable energy.

[0036] Alternatively or additionally, an emergency power generator, preferably an inverter diesel generator with approximately 2,500 W output, can be provided. This offers the advantage that the vehicle trailer is self-sufficient and does not require an external power supply, thus being independent of external conditions.

[0037] In a preferred embodiment of the invention, the vehicle trailer includes a compressed air supply. Preferably, the compressed air supply is in the form of a screw compressor, most preferably an electrically driven screw compressor. The electrically driven screw compressor preferably delivers a maximum pressure of 10 bar and has a motor output of 3 kW. This offers the advantage that the vehicle trailer is self-sufficient and does not require an external compressed air supply.

[0038] Alternatively, the vehicle trailer can be powered via an external supply of electricity and compressed air using external power or compressed air.

[0039] The vehicle trailer according to the invention is fundamentally suitable for applications where services of a motor vehicle workshop are provided on a mobile basis, for example at the customer's location.

[0040] 34878-P-WO Le / sp 23.06.2025. The mobile vehicle workshop is usually transported via public roads. The vehicle trailer according to the invention is therefore preferably designed for use in combination with a road-legal tractor unit.

[0041] The object of the invention is further achieved by a method for changing a vehicle trailer from a transport position to an operating position, wherein in the transport position the vehicle trailer is connected to a towing vehicle and an entry ramp forms a front wall of the vehicle trailer. Preferably, the vehicle trailer is configured according to one of the preferred embodiments described above. The method comprises the following steps:

[0042] - Uncoupling the vehicle trailer from the towing vehicle;

[0043] - Retracting a rear axle of the vehicle trailer so that the floor of the vehicle trailer rests on a surface;

[0044] - Lowering of the entrance ramp.

[0045] In a preferred embodiment of the invention, the vehicle trailer comprises pivotable coupling arms for connection to a towing vehicle, preferably hydraulically pivotable coupling arms. The coupling arms are pivoted upwards so that, in the operating position, a motor vehicle can enter the interior of the vehicle trailer. Particularly preferably, the coupling arms are pivoted upwards about a pivot axis parallel to the front wall and parallel to the floor of the vehicle trailer. By pivoting the coupling arms into the operating position, the path is cleared for a motor vehicle to enter the interior of the vehicle trailer through the opening in the front wall. This has the advantage that only a small height difference needs to be overcome, since no wheel axle or similar component needs to be driven over.

[0046] To change its location, the trailer is connected to a tractor unit in transport position and can be towed by it. Once the trailer has arrived at its destination, it switches from transport position to operating position. To switch to operating position, the trailer must

[0047] 34878-P-WO Le / sp 23.06.2025 The trailer initially remains stationary. Then the rear axle retracts. Subsequently, the trailer lowers until its floor rests on the ground or is supported by extendable hydraulic supports. Before, after, or during the retraction of the rear axle, the connection to the tractor unit is released and the tractor unit is removed. The entry ramp, which previously formed the front wall, lowers. In the operating position, a motor vehicle can drive into the interior. The method according to the invention enables a particularly rapid changeover to the operating position. Furthermore, the method according to the invention prepares the trailer for operation in such a way that a motor vehicle can drive in even when overcoming a particularly low height.

[0048] In a preferred embodiment of the method, the vehicle trailer has pivotable, preferably hydraulically pivotable, connecting arms for connection to a tractor unit. In this embodiment, the connecting arms pivot upwards, preferably about a pivot axis parallel to the front wall and parallel to the floor, so that a motor vehicle can enter the interior of the vehicle trailer when the operating position is reached. This embodiment is not limited to the point at which the connection to the tractor unit is released and the tractor unit removed, and / or when the rear axle is retracted. This embodiment allows for a particularly fast entry into the operating position compared to previously known methods of this kind.

[0049] The method also exhibits the aforementioned advantages of the vehicle trailer according to the invention and its preferred embodiments. Likewise, the vehicle trailer according to the invention exhibits all the aforementioned advantages of the method according to the invention.

[0050] Further preferred features and embodiments of the vehicle trailer according to the invention are explained below with reference to exemplary embodiments and the figures.

[0051] This shows:

[0052] Figure 1 shows a schematic representation of an embodiment of a vehicle trailer according to the invention with two extended side walls;

[0053] 34878-P-WO Le / sp 23.06.2025 Figure 2 with partial illustrations a and b a schematic representation of the embodiment from Figure 1 with open entrance gate;

[0054] Figure 3 is a schematic representation of the embodiment from Figures 1 and 2 in a top view.

[0055] In Figures 1-3, identical reference numerals denote identical or equivalent elements. All dimensions are for illustrative purposes only and do not constitute a limitation beyond the scope of the patent claims.

[0056] Figure 1 shows a vehicle trailer 1 with floor 1, ceiling 3, two side walls 4a, 4b, a rear wall 5 and a front wall 6.

[0057] In this case, both side walls 4a, 4b are designed as hydraulically extendable side walls, so that when the extendable side walls 4a, 4b are extended, the internal volume of the vehicle trailer 1 is increased. Figure 1 shows the extended state.

[0058] A lifting platform 7 is arranged in the floor 2 of the vehicle trailer 1. The lifting platform 7 is recessed into the floor of the vehicle trailer and designed such that the extendable side walls 4a, 4b can be extended and retracted over the lifting platform 7 recessed in the floor. In this case, the lifting platform 7 has a lifting capacity of 3.5 t. Figure 1 shows the lifting platform in the raised position.

[0059] The vehicle trailer is equipped as a workshop for repairing motor vehicles and contains all the necessary tools, equipment, and infrastructure. Additionally, the trailer is equipped with a tire mounting and balancing machine (not shown). Furthermore, various drawer systems and storage compartments for tools are installed, so that the vehicle trailer essentially has the standard equipment of a motor vehicle workshop.

[0060] The front wall 6 is the wall facing a tractor unit (not shown), and the rear wall 5 is the wall on the side facing away from the tractor unit. The front wall 6 forms the access ramp into the vehicle trailer 1 for the vehicle to be repaired (see figure).

[0061] 34878-P-WO Le / sp 23.06.2025 2a and 2b). For this purpose, the front wall 6 is designed to pivot. In this case, the front wall 6 is pivoted about a pivot axis S towards the ground, which corresponds to the lower edge of the front wall 6 of the vehicle trailer. The front wall 6 thus simultaneously constitutes a fold-out entrance ramp. This state is shown in Figure 2b. In the folded-in state, the entrance ramp forms the front wall. This state is shown in Figure 2a.

[0062] The front wall 6 of the vehicle trailer is fitted with a roller door, preferably an electric roller door. This roller door provides access to the vehicle trailer 1 and, when the entrance ramp is extended, offers weather protection for the interior of the vehicle trailer 1.

[0063] The roller door has a minimum width of 2.272 m and an entrance height of 2.6 m. This ensures that there is sufficient lateral clearance in the entrance area for conventional motor vehicles.

[0064] Figure 2, with partial illustrations 2a and 2b, shows the configuration of the vehicle trailer 1 as a semi-trailer. Connecting means are provided to link the vehicle trailer to the tractor unit, enabling the vehicle trailer to be coupled to a conventional fifth wheel coupling of the tractor unit. The semi-trailer mounting is designed in this case as a support frame 9 with a kingpin 10. The support frame 9 is designed in this case as pivotable connecting arms (pivoting gooseneck). The connecting arms are hydraulically pivotable so that the kingpin 10 can be pivoted upwards over the vehicle trailer.

[0065] Figure 2a shows the state with the support frame 9 lowered and the front wall 6 folded in.

[0066] The pivoting gooseneck 9 is U-shaped, as shown in Figure 3 in a top view. The U-shaped, pivoted gooseneck makes it easier for a motor vehicle to enter the mobile workshop. This is possible because the connecting elements would otherwise block the entrance at the front of the vehicle trailer.

[0067] 34878-P-WO Le / sp 23.06.2025 This allows the necessary mobility to be achieved in a simple way, as the vehicle trailer can be mounted on a conventional semi-trailer tractor and moved in road traffic.

[0068] To operate the vehicle trailer as a vehicle repair shop, the semi-trailer is uncoupled. The swiveling gooseneck 9 with kingpin 10 is then tilted upwards by means of two hydraulic cylinders. This creates sufficient space at the front wall for a vehicle to enter the vehicle trailer 1. An entry ramp 8 for a vehicle is provided for this purpose. This configuration is shown in Figure 2b.

[0069] The vehicle trailer 1, in the form of a semi-trailer, is placed on the ground and lowered hydraulically. During this process, the rear axle 12 of the semi-trailer is retracted electro-hydraulically, and the entire semi-trailer is leveled using four hydraulic supports 13. Leveling the vehicle trailer 1 is necessary because the lifting platform must be horizontal to safely lift the vehicle. Alternatively, the vehicle trailer can be leveled manually, for example, by placing wooden supports underneath it.

[0070] A further advantage is that the vehicle to be repaired can be driven onto the lifting platform 7 at ground level via the entrance ramp 6. Through the combination of "extendable side walls" and "recessed lifting platform," the vehicle trailer 1 according to the invention offers sufficient space for repairs around the vehicle to be repaired, while at the same time requiring only a minimal width for transport, which allows for road approval of the vehicle trailer 1.

[0071] Figure 3 shows the schematic representation from Figure 2 in a top view. Figure 3 shows the state with the support frame 9 swung upwards and the front wall 6 folded inwards.

[0072] The extendable side walls 4a, 4b create a sufficiently large work area in the vehicle trailer 1, independent of weather and time of day, enabling work to be carried out as in a stationary automotive workshop. The lifting platform 7 (see Figure 1) simultaneously provides the necessary infrastructure within this mobile work area, independent of weather and time of day. The lifting platform 7 is recessed into the floor of the trailer.

[0073] 34878-P-WO Le / sp 23.06.2025 Vehicle trailer 1 installed so that both side walls 4a, 4b can be driven over the lifting platform 7 at ground level. The performance of the mobile vehicle workshop is comparable to a lifting platform workstation in a stationary vehicle workshop.

[0074] A photovoltaic system (not shown) is installed on the roof of vehicle trailer 1. Three 48 V / 100 Ah lithium-ion batteries are used as storage for the photovoltaic system, so that the photovoltaic system charges the batteries. The photovoltaic system has a peak power output of approximately 2,000 W.

[0075] For an independent compressed air supply, a screw compressor, in this case an electrically driven screw compressor, is provided in equipment compartment 11. The electrically driven screw compressor delivers a maximum pressure of 10 bar and has a motor output of 3 kW. The upper equipment compartment 11 contains the screw compressor, a parking heater, power management equipment, and the necessary hydraulic components.

[0076] 34878-P-WO Le / sp 23.06.2025

Claims

Claims 1. Vehicle trailer (1), in particular semi-trailer, comprising a floor (2), roof (3), two side walls (4a, 4b), a rear wall (5) and a front wall (6), wherein at least the front wall (6) is designed to be openable; wherein at least one side wall (4a, 4b) is designed as an extendable side wall, such that in the extended state of the extendable side wall (4a, 4b) the internal volume of the vehicle trailer (1) is increased, wherein a lifting platform (7) is arranged in the floor (2) of the vehicle trailer (1), wherein the lifting platform (7) is arranged and designed to be recessed in the floor (2) of the vehicle trailer (1) such that the at least one extendable side wall (4a, 4b) can be extended and retracted via the lifting platform (7) recessed in the floor (2).

2. Vehicle trailer (1) according to claim 1, characterized in that the vehicle trailer (1) is equipped as a workshop for the repair of motor vehicles.

3. Vehicle trailer (1) according to one of the preceding claims, characterized in that the vehicle trailer (1) is designed with an entry ramp, preferably that the entry ramp is formed by the front wall (6) by making the front wall (6) pivotable, in particular preferably about a pivot axis which is parallel to the lower edge of the front wall (6) of the vehicle trailer or corresponds to the lower edge of the front wall (6) of the vehicle trailer.

4. Vehicle trailer (1) according to one of the preceding claims, characterized in that the vehicle trailer (1) comprises pivotable connecting arms (9), preferably hydraulically pivotable connecting arms (9), for connection with a towing vehicle, which carry a coupling element (10), preferably a kingpin (10), so that the 34878-P-WO Le / sp 23.06.2025 The coupling element (10) can be pivoted upwards about a pivot axis (S) in the direction of the ceiling (3) of the vehicle trailer (1), preferably about a pivot axis (S) parallel to the front wall (6) and parallel to the floor (2) of the vehicle trailer.

5. Vehicle trailer (1) according to one of the preceding claims, characterized in that the vehicle trailer (1) comprises pivotable connecting arms (9), preferably hydraulically pivotable connecting arms (9), for connection with a tractor unit, which carry a coupling element (10), preferably a kingpin (10), so that the coupling element (10) can be pivoted upwards about a pivot axis (S) over the vehicle trailer (1), preferably about a pivot axis (S) parallel to the front wall (6) and parallel to the ground (2).

6. Vehicle trailer (1) according to one of the preceding claims, characterized in that the connecting arms (9) in conjunction with the coupling element (10) are U-shaped.

7. Vehicle trailer (1) according to one of the preceding claims, characterized in that the vehicle trailer (1) has a retractable rear axle (12), preferably that the vehicle trailer (1) has at least two support elements (13) and a retractable rear axle (12), which rear axle (12) is preferably retractable to such an extent that a floor (2) of the vehicle trailer (1) rests on a surface or the support elements.

8. Vehicle trailer (1) according to one of the preceding claims, characterized in that the front wall (6) is equipped with a roller door, preferably an electric roller door.

9. Vehicle trailer (1) according to any of the preceding claims, 34878-P-WO Le / sp 23.06.2025 characterized in that the roller door has a minimum width of 2 m, preferably 2.2 m, in particular preferably 10. Vehicle trailer (1) according to one of the preceding claims, characterized in that a tire mounting and tire balancing machine is provided in the vehicle trailer (1).

11. Vehicle trailer (1) according to one of the preceding claims, characterized in that the vehicle trailer (1) comprises a photovoltaic system, which is preferably arranged on the roof of the vehicle trailer (1), and that supply batteries are most preferably provided which are arranged and designed to interact with the photovoltaic system, such that the photovoltaic system feeds the supply batteries.

12. Vehicle trailer (1) according to one of the preceding claims, characterized in that the vehicle trailer (1) comprises a compressed air supply, preferably that the vehicle trailer comprises a screw compressor, most preferably an electrically driven screw compressor.

13. Method for changing a vehicle trailer (1), in particular according to one of the preceding claims, from a transport position to an operating position, wherein in the transport position the vehicle trailer (1) is connected to a tractor unit and an entry ramp (6) forms a front wall (6) of the vehicle trailer, comprising the method steps: Uncoupling the vehicle trailer (1) from the towing vehicle; Retracting a rear axle (12) of the vehicle trailer so that the floor (2) of the vehicle trailer (1) rests on a surface or support elements (13); 34878-P-WO Le / sp 23.06.2025 Swinging down the entrance ramp (6).

14. Method according to claim 13, wherein the vehicle trailer (1) comprises pivotable connecting arms (9), preferably hydraulically pivotable connecting arms (9), for connection with a tractor unit, characterized in that the connecting arms (9) are pivoted upwards, preferably about a pivot axis (S) parallel to the front wall (6) and parallel to the floor (2), so that a motor vehicle can enter the interior of the vehicle trailer (1) when in the operating position. 34878-P-WO Le / sp 23.06.2025

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