Vehicle trailer with lifting platform

Abstract

This invention relates to a vehicle trailer, particularly a semi-trailer, configured to have a floor, a top, two side walls, a rear wall, and a front wall, wherein at least the front wall is configured to be openable. At least one side wall is configured as an extendable side wall, thereby increasing the internal volume of the vehicle trailer when the extendable side wall is extended. A lifting platform is arranged in the floor of the vehicle trailer, and this lifting platform is recessed and constructed within the floor of the vehicle trailer, such that at least one extendable side wall can retract and extend over the lifting platform recessed in the floor.

Description

Technical Field

[0001] This invention relates to a vehicle trailer as described in the preamble of claim 1 and a method as described in claim 13. Such a vehicle trailer, particularly a semi-trailer, is typically constructed with an enclosed space. Furthermore, a lifting platform is arranged in the floor of the vehicle trailer. Therefore, the vehicle trailer is constructed as a mobile vehicle repair station. Background Technology

[0002] Traditional auto repair shops are located in fixed locations. For maintenance and repairs, customers must drive their vehicles to the designated repair shop. For customers, this means travel time to the repair shop and waiting time during the repair process. For repair shops, this translates to organizational costs, such as pick-up and drop-off services, and the provision and organization of rental vehicles. This represents significant expenses, especially for large commercial clients and fleet owners, related to the time spent at the repair shop. Summary of the Invention

[0003] Therefore, the objective of this invention is to provide a solution for reducing the costs associated with services at motor vehicle repair shops.

[0004] This task is accomplished by the vehicle trailer according to claim 1 and the method according to claim 13. Preferred designs of the vehicle trailer according to the invention are found in dependent claims 2 to 12. Preferred embodiments of the method according to the invention are found in claim 14. The wording of all claims is hereby expressly incorporated in the specification by reference.

[0005] The vehicle trailer according to the invention is configured to have at least a floor, a top, two side walls, a rear wall, and a front wall. The front wall is configured to open, allowing a vehicle to be repaired to drive into the vehicle trailer. At least one side wall is configured to extend, thereby increasing the internal volume of the vehicle trailer when the extendable side wall is extended. Furthermore, a lifting platform is arranged in the floor of the vehicle trailer. This lifting platform is recessed and constructed within the floor of the vehicle trailer, such that at least one extendable side wall can retract or extend over the lifting platform recessed in the floor. Preferably, the lifting platform is configured as a scissor lift.

[0006] This yields the following advantages: Compared to fixed-location vehicle repair shops, the vehicle trailer according to the present invention offers advantages in service and logistics as a mobile vehicle repair shop, overcoming the aforementioned disadvantages. At least one extendable sidewall provides a sufficiently large working area within the vehicle trailer, independent of weather and day / night cycles, enabling operations similar to those in a fixed-location vehicle repair shop. A lifting platform allows the necessary infrastructure to be simultaneously present within this weather- and day / night-independent mobile working area. The performance of the mobile vehicle repair shop is comparable to that of a fixed-location vehicle repair shop. Furthermore, with at least one extendable sidewall retracted, easy transport compliant with road traffic permits is possible.

[0007] Preferably, the vehicle trailer is configured as a repair station for repairing motor vehicles and includes all necessary tools, equipment, and essential infrastructure. Preferably, the lifting platform has a load capacity of 3.5 tons.

[0008] The vehicle trailer according to the invention thus represents a mobile motor vehicle repair station and can be applied to almost any location. This means that, on the one hand, it eliminates the organizational costs in the form of driving and waiting times for customers, and on the other hand, it eliminates the organizational costs of pick-up and delivery services for the motor vehicle repair station. For example, seasonal tire changes (summer / winter tires) can be performed directly on-site for customers. Furthermore, deregistered motor vehicles, such as collectible cars or classic cars, can be repaired directly on-site without being moved in road traffic. Even in events such as motorsports, classic car shows, and other similar activities, this mobile motor vehicle repair station can operate on-site at minimal cost.

[0009] Preferably, the vehicle trailer is constructed as a semi-trailer. This allows for the simple achievement of the necessary mobility, as the vehicle trailer can be saddle-mounted to a conventional saddle-mounted tractor and move within road traffic. Preferably, the semi-trailer is configured such that a portion of the weight is distributed on the semi-trailer's axles, and a portion is distributed via a saddle plate on the saddle-mounted tractor's axles. This 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.

[0010] Preferably, the front wall is the wall facing the tractor, and the rear wall is the wall away from the tractor.

[0011] A connecting device is provided to link the vehicle trailer to the tractor, so that the vehicle trailer is preferably saddle-mounted onto the conventional saddle-type coupler of the tractor. This connecting device is preferably configured as a swingable connecting arm, also referred to below as a swingable gooseneck connecting arm (Schwanenhals). This connecting arm is constructed such that the connection between the tractor's saddle-type coupler and the vehicle trailer (preferably a saddle kingpin) can swing upwards above the vehicle trailer. The connecting arm is preferably configured to swing hydraulically.

[0012] In semi-trailers according to the prior art, coupling elements, such as those in the form of saddle kingpins, are typically arranged at the front portion of the floor. Such semi-trailers are configured such that the semi-trailer's storage space is at least partially rested on the saddle of the tractor unit, and is thus secured to the saddle in a horizontally swingable manner by means of the coupling elements. Therefore, the bottom of the area where the semi-trailer is rested is relatively high, typically above the diameter of the truck tires, located above the driveway. In contrast, the vehicle trailer according to the invention is preferably configured such that the front wall (i.e., the wall in the storage space facing the tractor unit) is pulled down as far as possible and configured to open to the ground. Therefore, the vehicle trailer is configured without a storage space resting surface.

[0013] A connecting device is provided to link the vehicle trailer to the tractor, allowing the vehicle trailer to be saddle-mounted onto the tractor's conventional saddle coupler. This connecting device is preferably configured as a swingable connecting arm, also referred to below as a swingable gooseneck connecting arm, preferably capable of swinging about a swing axis parallel to the front wall and the floor plate. The connecting arm has an elongated shape and is swingably connected to the vehicle trailer at its ends. The connecting arm is configured such that the coupling element (preferably a saddle kingpin) between the tractor's saddle coupler and the vehicle trailer can swing upwards, preferably above the vehicle trailer. Specifically, the connecting arm can swing between the transport position and the operating position at an angle of approximately 35° to 90°, preferably 35° to 60°, and particularly preferably 90°. The connecting arm is preferably configured to swing hydraulically. The advantage of this is that the vehicle trailer can be configured to allow the vehicle to drive into the interior space in the operating position without overcoming significant height limitations.

[0014] Preferably, the swingable gooseneck connecting arm is implemented in a U-shape, thereby allowing the vehicle to more easily drive into the mobile repair shop by swinging and raising the U-shaped gooseneck connecting arm. This is primarily achieved by swinging and raising the gooseneck connecting arm, which would otherwise obstruct entry at the front of the vehicle trailer.

[0015] Preferably, the swingable gooseneck connecting arms are implemented in a U-shape, with two connecting arms arranged on the front wall of the vehicle-trailer in a manner pointing away from the vehicle-trailer. These two connecting arms are connected to each other directly or via a lateral connecting portion at their ends away from the vehicle-trailer and carry a coupling element, preferably a kingpin. In the operating position, the swinging and raised gooseneck connecting arms thus allow the vehicle to drive into the vehicle-trailer, which would otherwise be obstructed by the gooseneck connecting arms at the front wall of the vehicle-trailer.

[0016] In a preferred embodiment of the invention, the vehicle trailer is configured to have an entry ramp. The entry ramp is formed by a front wall that is configured to swing. Preferably, the front wall swings about a swing axis corresponding to the lower edge of the front wall of the vehicle trailer toward the ground. Therefore, the front wall is also a foldable entry ramp. In the folded state, the entry ramp forms the front wall.

[0017] When the ramp is opened, this opening in the vehicle trailer is used for the vehicle awaiting repair to enter and exit. This reduces the distance between the vehicle trailer and the ground and keeps the uphill angle of the ramp as small as possible. The necessary running axle of the vehicle trailer is located at the rear end of the vehicle trailer, away from the tractor, forming an obstacle that the vehicle awaiting repair cannot cross.

[0018] In a preferred embodiment of the invention, both sidewalls are configured as extendable sidewalls. These two extendable sidewalls can retract and extend over a lifting platform recessed in the floor. The advantage obtained here is that the internal volume of the vehicle trailer can be further increased when the two extendable sidewalls are in the extended state.

[0019] Preferably, the two sidewalls of the vehicle trailer are configured as extendable sidewalls, more preferably hydraulically extendable sidewalls. Importantly according to the invention, the lift platform is recessed into the floor of the vehicle trailer, allowing the two sidewalls to extend flush with the floor over the lift platform. This also provides the advantage that the vehicle to be repaired can drive onto the lift platform flush with the floor. The vehicle trailer according to the invention, by combining "extendable sidewalls" with "recessed lift platform," provides sufficient space around the vehicle to be repaired, while simultaneously requiring only the minimum width necessary for road clearance during transport.

[0020] In a preferred embodiment of the invention, the front wall of the vehicle trailer is configured to have a roller shutter, preferably an electrically operated roller shutter. Preferably, the front wall (i.e., the wall facing the tractor) is configured to have a roller shutter. When the front wall swings downward, the roller shutter allows the entry point into the vehicle trailer to be closed, for example, as weather protection.

[0021] To operate the vehicle trailer as a motor vehicle repair shop, the semi-trailer is detached. The semi-trailer is placed, or preferably hydraulically lowered, onto the ground. Preferably, the rear axle of the semi-trailer retracts electro-hydraulically, and the entire semi-trailer is leveled using four hydraulic supports. The advantage of this is that even on uneven road surfaces, the four hydraulic cylinders will level the vehicle trailer to a uniform level.

[0022] In one advantageous improvement, the vehicle trailer has a retractable rear axle, preferably retractable to the point where the trailer's floor rests on the road surface or supporting elements. This enables a particularly rapid transition from a transport position in which the vehicle trailer and tractor are connected to an operating position that allows the vehicle to drive into the trailer's interior space.

[0023] Preferably, the vehicle trailer has at least two support elements, preferably hydraulic supports, by means of which the vehicle trailer can be leveled. Preferably, at least two hydraulic supports are provided in the front area, and particularly preferably, two additional rear hydraulic supports are provided in the rear axle area. The advantage of this is that even on uneven road surfaces, the four hydraulic cylinders will level the vehicle trailer to a uniform level, thereby improving operational safety. When the rear axle is retracted, the vehicle trailer rests solely on the hydraulic supports, achieving the lowest possible entry level. Only due to the provided lifting platform and wall / floor thickness is the floor of the vehicle trailer's interior space slightly higher than the road surface.

[0024] After leveling, the semi-trailer's receiving section is disengaged from the tractor, and two hydraulic cylinders are used to lift the swing-out gooseneck connecting arm upwards. This provides sufficient space at the front wall for vehicles to enter and exit the semi-trailer. Another advantage is that the ramp's uphill angle is kept as small as possible. As mentioned above, this reduces the distance between the vehicle / trailer and the ground, and keeps the uphill angle of the ramp as small as possible. By lowering the vehicle / trailer, driving in from the side facing the tractor, and using the swing-out gooseneck connecting arm for connecting the vehicle / trailer and the tractor, a gentle ramp entry into mobile vehicle repair shops is provided. This is advantageous because it allows vehicles awaiting repair to enter the vehicle / trailer without damaging the bumper. Depending on the structural type and legal regulations, vehicles have at least approximately 11 centimeters of ground clearance at the front bumper, typically between 11 and 15 centimeters, while transport vehicles or SUVs may have significantly higher ground clearance. When a vehicle travels uphill or downhill due to this, the bumper may hit the ground and be damaged at a significant angle. Entering the slope gently will prevent this from happening.

[0025] Alternatively, also within the scope of this invention, a roller shutter door for the vehicle to enter the semi-trailer will be provided on the rear wall away from the tractor.

[0026] In a preferred embodiment of the invention, the vehicle trailer, particularly the front and rear walls, has a maximum external width of 2.55 meters, preferably 2.5 meters. The load-bearing frame is constructed such that its width in the driving state, while only sufficient to meet road traffic permit requirements, still provides the maximum possible passage width for motor vehicles. This has the advantage of achieving road traffic permit requirements in accordance with road traffic regulations. Preferably, the roller shutter door has a minimum width of 2.0 meters, preferably 2.2 meters, and particularly preferably 2.272 meters. This has the advantage of eliminating the need to fold side mirrors when entering for conventional motor vehicles. Preferably, the entrance clearance is set to at least 2.2 meters, preferably 2.6 meters. This ensures sufficient lateral clearance in the entry area for conventional motor vehicles.

[0027] In a preferred embodiment of the invention, a tire fitting machine and a tire balancing machine are provided in the vehicle trailer. Preferably, various drawer systems and tool storage compartments are additionally installed, thereby giving the vehicle trailer essentially the standard configuration of a motor vehicle repair shop.

[0028] In a preferred embodiment of the invention, the vehicle trailer includes a photovoltaic (PV) facility. Preferably, the PV facility is mounted on the roof of the vehicle trailer. Most preferably, power supply batteries are provided, arranged and configured to work in conjunction with the PV facility, such that the PV facility powers the power supply batteries. Preferably, the PV facility has a peak power of approximately 2000 watts. The corresponding power supply batteries are preferably implemented in the form of three 48-volt / 100-amp-hour lithium-ion batteries. The advantage obtained is that the vehicle trailer is self-sufficient and requires no external power supply, while simultaneously providing a sustainable power source.

[0029] An emergency generator, preferably an inverter-type diesel generator with a power output of approximately 2,500 watts, can be installed at an alternative or additional location. The advantage of this is that the vehicle trailer is self-sufficient and requires no external power supply, and is not dependent on external conditions.

[0030] In a preferred embodiment of the invention, the vehicle trailer includes a compressed air supply device. Preferably, the compressed air supply device is configured in the form of a screw compressor, and most preferably in the form of an electrically driven screw compressor. This electrically driven screw compressor preferably provides a maximum pressure of 10 bar and has a motor power of 3 kilowatts. The advantage obtained is that the vehicle trailer is self-sufficient and requires no external compressed air supply device.

[0031] Alternatively, the vehicle trailer can be powered by an externally supplied electric current or compressed air.

[0032] The vehicle trailer according to the invention is, in principle, suitable for applications such as providing mobile motor vehicle repair shop services at customer sites. The transport of mobile motor vehicle repair shops typically takes place via public roads. Therefore, the vehicle trailer according to the invention is preferably configured for use in conjunction with a tractor suitable for road traffic.

[0033] The invention also addresses the objective of 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 tractor and drives into a ramp to form the front wall of the vehicle-trailer. Preferably, the vehicle-trailer is constructed according to one of the preferred embodiments described above. The method includes the following steps: - Disconnect the vehicle trailer from the tractor; - Retract the rear axle of the vehicle trailer so that the trailer floor rests on the road surface. - It will sway down the ramp.

[0034] In a preferred embodiment of the invention, the vehicle trailer includes a swingable connecting arm, preferably a hydraulically swingable connecting arm, for connection to a tractor. The connecting arm swings upward, allowing a motor vehicle to drive into the interior space of the vehicle trailer when in the operating position. Particularly preferably, the connecting arm swings upward about a swing axis parallel to the front wall and floor of the vehicle trailer. By swinging the connecting arm to the operating position, a path is created allowing the motor vehicle to drive into the interior space of the vehicle trailer through an opening in the front wall. The advantage gained is that only a small height difference needs to be overcome, as it does not require crossing a wheel axle or similar structures.

[0035] To change its location, the vehicle-trailer is connected to and towed by a tractor in the transport position. If the vehicle-trailer arrives at its destination, it is moved from the transport position to the operating position. To move to the operating position, the vehicle-trailer must first be stationary, and then the rear axle is retracted. Thus, the vehicle-trailer descends until its floor rests on the road surface or is supported by corresponding extendable hydraulic supports. The connection to the tractor is released and the tractor is removed before, immediately after, or during the retraction of the rear axle. The previously formed entry ramp moves downward. In the operating position, the vehicle can drive into the interior space. The method according to the invention enables a particularly rapid change to the operating position. Furthermore, by using the method according to the invention, the vehicle-trailer is prepared for operation, allowing the vehicle to drive into the vehicle-trailer during operation while overcoming particularly low height levels.

[0036] In a preferred embodiment of the method, the vehicle trailer has a swingable connecting arm for connection with a tractor, preferably a hydraulically swingable connecting arm. In this embodiment, the connecting arm swings upward, preferably about a swing axis parallel to the front wall and parallel to the floor, thereby allowing the vehicle to drive into the interior space of the vehicle trailer when in an operating position. This embodiment does not restrict at what point the connection with the tractor is disengaged and the tractor is removed and / or when the rear axle is retracted. Compared to existing methods of this kind, this embodiment allows for particularly rapid occupation of an operating position.

[0037] This method also possesses the aforementioned advantages of the vehicle trailer according to the invention and its preferred embodiments. Similarly, the vehicle trailer according to the invention also possesses all the aforementioned advantages of the method according to the invention. Attached Figure Description

[0038] The following will describe further preferred features and implementation methods of the vehicle trailer according to the present invention in conjunction with embodiments and accompanying drawings.

[0039] In the picture: Figure 1 A schematic diagram of an embodiment of a vehicle trailer having two extendable sidewalls according to the present invention is shown; Figure 2 shows Figure 1 A schematic diagram of the implementation method when the door is opened; Figure 3 It shows Figure 1 Figure 2 shows a top view of the embodiment.

[0040] exist Figures 1 to 3 In the accompanying drawings, the same reference numerals denote the same or equivalent elements. All dimensions are to be understood illustratively and do not contain any limitation beyond the scope of the claims. Detailed Implementation

[0041] Figure 1 The vehicle trailer 1 is shown, which has a floor 2, a top 3, two side walls 4a and 4b, a rear wall 5 and a front wall 6.

[0042] In this example, the two sidewalls 4a and 4b are configured to extend hydraulically, thereby increasing the internal volume of the vehicle trailer 1 when the extendable sidewalls 4a and 4b are in the extended state. Figure 1 The extended state is shown.

[0043] A lifting platform 7 is arranged in the floor 2 of the vehicle trailer 1. The lifting platform 7 is recessed and constructed in the floor 2 of the vehicle trailer, so that the extendable side walls 4a, 4b can retract or extend over the lifting platform 7 recessed in the floor 2. In this example, the lifting platform 7 has a load-bearing capacity of 3.5 tons. Figure 1The image shows the lifting platform in its raised state.

[0044] In this example, the vehicle trailer is configured as a repair shop for motor vehicles, and includes all the necessary tools, equipment, and essential infrastructure. Additionally, a tire fitting machine and a tire balancing machine (not shown) are also installed in vehicle trailer 1. Furthermore, various drawer systems and tool storage compartments are installed, thus giving the vehicle trailer essentially the standard configuration of a motor vehicle repair shop.

[0045] The front wall 6 faces the tractor (not shown), and the rear wall 5 is the wall away from the tractor. The front wall 6 forms an entry ramp for the vehicle to be repaired to enter the trailer 1 (see [link]). Figure 2a and Figure 2b Therefore, the front wall 6 is configured to swing. In this example, the front wall 6 swings about the swing axis S, which corresponds to the lower edge of the front wall 6 of the vehicle trailer, towards the ground. Thus, the front wall 6 is simultaneously a foldable entry ramp, as shown in the example. Figure 2b As shown. In the retracted state, it forms the front wall of the ramp. This state is as follows. Figure 2a As shown.

[0046] In this example, the front wall 6 of the vehicle trailer is configured to have a roller shutter, preferably an electrically operated roller shutter. Thus, the roller shutter serves as an entry point into the vehicle trailer 1 and provides weather protection to the interior space of the vehicle trailer 1 when the entry ramp is opened.

[0047] The roller shutter door has a minimum width of 2.272 meters and a clear height of 2.6 meters at the entrance. Sufficient lateral clearance is ensured in the entry area for regular motor vehicles.

[0048] Figure 2 with children Figure 2a and Figure 2b The design of the vehicle trailer 1 as a semi-trailer is shown. A connecting device is provided to connect the vehicle trailer to the tractor, allowing the vehicle trailer to be saddle-mounted onto the tractor's conventional saddle coupler. In this example, the semi-trailer's receiving portion is constructed as a load-bearing frame 9 with a saddle kingpin 10. In this example, the load-bearing frame 9 is constructed as a swingable connecting arm (a swingable gooseneck connecting arm). The connecting arm is configured to swing hydraulically, allowing the saddle kingpin 10 to swing upwards above the vehicle trailer.

[0049] Figure 2a The image shows the state where the supporting frame 9 is lowered and the front wall 6 is retracted.

[0050] In this example, such as Figure 3As shown in the top view, the swingable gooseneck connecting arm 9 is implemented in a U-shape. By swinging and raising the U-shaped gooseneck connecting arm, vehicles can more easily drive into mobile repair shops. This is made possible by swinging and raising the gooseneck connecting arm; otherwise, the connecting device might obstruct entry at the front wall of the vehicle trailer.

[0051] This allows for the simple realization of necessary mobility, as the vehicle trailer can be saddle-mounted onto a conventional saddle-mounted tractor and move within road traffic.

[0052] To allow the vehicle trailer to operate as a motor vehicle repair shop, the semi-trailer is detached. Then, two hydraulic cylinders are used to tilt the swingable gooseneck connecting boom 9, which has a saddle kingpin 10, upwards. This provides sufficient space at the front wall for a motor vehicle to drive into the vehicle trailer 1. A ramp 8 for motor vehicles is provided for this purpose. Figure 2b As shown in the image.

[0053] The semi-trailer trailer 1 is placed and hydraulically lowered to the ground. Here, the rear axle 12 of the semi-trailer retracts electro-hydraulically, and the entire semi-trailer is leveled using four hydraulic supports 13. Leveling the trailer 1 is necessary because the lift platform must be horizontal to safely raise the vehicle. Alternatively, the trailer can be manually leveled, for example, by using wooden blocks as a base.

[0054] Another advantage is that the vehicle to be repaired can drive onto the lifting platform 7 flush with the floor via the ramp 6. The vehicle trailer according to the invention provides sufficient space around the vehicle to be repaired for repair through the combination of "extendable sidewalls" and "recessed loading lifting platform", while only requiring the minimum width required for road passage during transport.

[0055] Figure 3 A top view of the schematic diagram in Figure 2 is shown. Figure 3 The image shows the state where the supporting frame 9 swings up and the front wall 6 retracts.

[0056] The extendable side walls 4a and 4b provide a sufficiently large working area within the vehicle trailer 1, independent of weather and day / night, enabling operations similar to those in a fixed-location vehicle repair shop. This is achieved via the lifting platform 7 (see...). Figure 1 The necessary infrastructure is simultaneously present in this mobile work area, which is independent of weather and day / night cycles. The lifting platform 7 is recessed into the floor of the vehicle trailer 1, allowing the two side walls 4a and 4b to pass flush with the floor over the lifting platform 7. The performance of the mobile vehicle repair station is comparable to that of the lifting platform workstation in a fixed-location vehicle repair station.

[0057] In this example, a photovoltaic (PV) system (not shown) is mounted on the roof of trailer 1. Three 48V / 100Ah lithium-ion batteries are installed as energy storage units to power this PV system, allowing the PV system to supply power to these batteries. In this example, the PV system has a peak power of approximately 2000 watts.

[0058] To independently supply compressed air, a screw compressor is installed in equipment compartment 11. In this example, the screw compressor is an electrically driven screw compressor. This electrically driven screw compressor provides a maximum pressure of 10 bar and has a motor power of 3 kilowatts. In this example, equipment compartment 11 houses the screw compressor, parking heater, electrical management equipment, and necessary hydraulic devices.

Claims

1. A vehicle trailer (1), particularly a semi-trailer, said vehicle trailer being constructed having a floor (2), a top (3), two side walls (4a, 4b), a rear wall (5) and a front wall (6). in, At least the front wall (6) is configured to be openable; At least one sidewall (4a, 4b) is configured as an extendable sidewall, thereby increasing the internal volume of the vehicle trailer (1) when the extendable sidewall (4a, 4b) is in the extended state. A lifting platform (7) is arranged in the bottom plate (2) of the vehicle trailer (1), wherein the lifting platform (7) is recessed and constructed in the bottom plate (2) of the vehicle trailer (1) such that at least one extendable side wall (4a, 4b) can retract and extend over the lifting platform (7) recessed in the bottom plate (2).

2. The vehicle trailer (1) according to claim 1. Its features are, The vehicle trailer (1) is configured as a repair station for repairing motor vehicles.

3. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The vehicle trailer (1) is configured to have an entry ramp, preferably formed by the front wall (6) in such a way that the front wall (6) is configured to swing, particularly preferably to swing about a swing axis parallel to or equivalent to the lower edge of the front wall (6) of the vehicle trailer.

4. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The vehicle trailer (1) includes a swingable connecting arm (9) for connection with the tractor, preferably a hydraulically swingable connecting arm (9), which carries a coupling element (10), preferably a saddle kingpin (10), so that the coupling element (10) can swing upward about a swing axis (S) toward the top (3) of the vehicle trailer (1), preferably about a swing axis (S) parallel to the front wall (6) of the vehicle trailer and parallel to the bottom plate (2) of the vehicle trailer.

5. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The vehicle trailer (1) includes a swingable connecting arm (9) for connection with the tractor, preferably a hydraulically swingable connecting arm (9), which carries a coupling element (10), preferably a saddle kingpin (10), so that the coupling element (10) can swing upward about a swing axis (S) above the vehicle trailer (1), preferably about a swing axis (S) parallel to the front wall (6) and parallel to the bottom plate (2).

6. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The connecting arm (9) and the coupling element (10) are implemented in a U-shape.

7. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The vehicle trailer (1) has a retractable rear axle (12), preferably, the vehicle trailer (1) has at least two support elements (13) and a retractable rear axle (12), the rear axle (12) preferably retractable to the extent that the floor (2) of the vehicle trailer (1) rests on the road surface or on the support elements.

8. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The front wall (6) is configured to have a roller shutter door, preferably an electric roller shutter door.

9. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The roller shutter door has a minimum width of 2 meters, preferably 2.2 meters, and especially preferably 2.272 meters.

10. The vehicle trailer (1) according to any one of the preceding claims. Its features are, A tire assembly machine and a tire balancer are provided in the vehicle trailer (1).

11. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The vehicle trailer (1) includes a photovoltaic facility, which is preferably arranged on the roof of the vehicle trailer (1), and most preferably, is provided with a power supply battery, which is arranged and configured to work in conjunction with the photovoltaic facility so that the photovoltaic facility supplies power to the power supply battery.

12. The vehicle trailer (1) according to any one of the preceding claims. Its features are, The vehicle trailer (1) includes a compressed air supply device; preferably, the vehicle trailer includes a screw compressor, and most preferably, it includes an electrically driven screw compressor.

13. A method for changing, in particular, a vehicle trailer (1) according to any one of the preceding claims, from a transport location to an operating location, wherein, In the transport position, the vehicle trailer (1) is connected to the tractor and drives into the ramp (6) to form the front wall (6) of the vehicle trailer. The method includes the following steps: - Disconnect the vehicle trailer (1) from the tractor; - Retract the rear axle (12) of the vehicle trailer so that the floor (2) of the vehicle trailer (1) rests on the road surface or on the support element (13); - Swing the driving ramp (6) downwards.

14. The method according to claim 13, wherein, The vehicle trailer (1) includes a swingable connecting arm (9) for connecting to the tractor, preferably a hydraulically swingable connecting arm (9). Its features are, The connecting arm (9) swings upward, preferably about a swing axis (S) parallel to the front wall (6) and parallel to the bottom plate (2), so that when in the operating position, the motor vehicle can drive into the interior space of the vehicle trailer (1).

Images