Car carrier wagon

Abstract

The invention relates to a car carrier wagon, comprising a frame, at least one loading plane, at least one linear drive, and at least one drive unit, wherein the at least one loading plane is provided on the frame, is designed to receive motor vehicles, and is operatively connected to the at least one linear drive in such a way that the height of the at least one loading plane can be adjusted by means of the at least one linear drive.

Description

[0001] AKB Antriebstechnik GmbH

[0002] September 2, 2025

[0003] car transporter

[0004] Description

[0005] The invention relates to a car transporter.

[0006] Car transport wagons are a special type of railway freight wagon. They belong to the category of flat wagons. The International Union of Railways (UIC) classifies car transport wagons as flat wagons of type "L".

[0007] Car transporters are used for transporting motor vehicles, especially for delivering brand-new cars, such as brand-new passenger cars. To accommodate the vehicles, car transporters typically have two continuous, essentially flat loading levels arranged one above the other, with vehicles able to be loaded onto each level.

[0008] Car transporters consist of a frame made of profiled steel, to which the loading platforms are attached. While the lower of the two loading platforms is usually fixed to the frame, the upper platform is typically height-adjustable. This height adjustability allows the upper platform to accommodate the geometry and, in particular, the height of the transported vehicles. Linear actuators, mounted on the frame and operatively connected to the upper platform, are generally used for this height adjustment. Typically, these linear actuators are spindle drives mounted on vertical elements of the frame.

[0009] The height adjustment of the upper loading level is typically achieved using a drive mechanism, in particular a hand crank or an electric motor. AKB Antriebstechnik GmbH is responsible for this.

[0010] On September 2, 2025, the relevant drive element can typically be brought into operative contact with a shaft of a drive unit of the car transporter in such a way that a torque can be driven onto the shaft. The torque can then be transmitted via the drive unit to the linear drive, for example, the spindle of a spindle drive.

[0011] The drive unit of a car transporter typically comprises one or more drive trains, each designed to drive a linear actuator. The drive trains are usually capable of synchronous operation. Such a drive train generally includes a gearbox for transmitting torque from the drive mechanism to the linear actuator.

[0012] In general, car transporters of the type described above have proven their worth. However, the increasing weight of brand-new vehicles presents a challenge. Adjusting the height of an upper loading level loaded with brand-new vehicles using a hand crank or electric motor is often no longer possible, or only with great difficulty.

[0013] Another challenge is the necessary speed with which the height adjustment of the upper loading level must be achieved. Particularly due to economic pressures, the market demands a very fast height adjustment of the upper loading level.

[0014] Finally, the specified inner clearance profile (vehicle perimeter profile) and outer clearance profile (track perimeter profile) of car transport wagons present a challenge, particularly in the dimensioning of the drive unit. The drive unit must occupy a very limited, defined space to avoid encroaching on the inner or outer clearance profile.

[0015] The invention is based on the objective of providing a car transporter of the type mentioned above, by which the height-adjustable loading platform can be adjusted particularly effectively. In particular, the height-adjustable loading platform should be adjustable even for heavy vehicles using simple drive means that can only generate limited torque, such as a hand crank or an electric motor with limited power. AKB Antriebstechnik GmbH

[0016] September 2, 2025

[0017] Another object of the invention is to provide a car transporter of the type mentioned above with a height-adjustable loading level, in which the height-adjustable loading level can be adjusted particularly quickly.

[0018] A further object of the invention is to provide a car transporter of the type mentioned above with a height-adjustable loading level, in which the drive unit for adjusting the height of the loading level occupies only a limited space and, in particular, does not interfere with the inner or outer clearance profile of the car transporter.

[0019] To solve these problems, a car transporter is provided according to the invention, comprising a frame, at least one loading level, at least one linear drive, and at least one drive unit, wherein the at least one loading level is arranged on the frame, is designed to accommodate motor vehicles, and is operatively connected to the at least one linear drive in such a way that the at least one loading level is height-adjustable by means of the at least one linear drive, wherein the at least one drive unit is designed to drive the at least one linear drive and comprises the following: a first drive train, wherein the first drive train is designed to drive a first linear drive of the at least one linear output, and wherein the first drive train comprises the following: a first input shaft, a first output shaft,and a first gear arrangement for torque transmission between the first input shaft and the first output shaft, wherein the first gear arrangement is multi-stage and comprises the following gear stages: AKB Antriebstechnik GmbH,

[0020] 02.09.2025 a worm gear stage, and a planetary gear stage.

[0021] According to the invention, it has surprisingly been found that a car transporter comprising the aforementioned features can be used to provide a car transporter that solves the aforementioned tasks simply and effectively. In particular, the car transporter according to the invention can provide a car transporter with a height-adjustable loading platform that can be adjusted particularly effectively and quickly, while the drive unit for the linear drive simultaneously requires very little space.

[0022] A key concept of the invention is that a drive train for powering a linear actuator comprises a gear arrangement including a worm gear stage and a planetary gear stage. Surprisingly, it has been found within the scope of the invention that a gear arrangement comprising such gear stages allows for particularly effective height adjustment of the loading platform. In particular, it has been found that a gear arrangement comprising such gear stages exhibits a particularly high efficiency in adjusting the height of the loading platform, so that even the height adjustment of a loading platform loaded with heavy vehicles can be achieved with a hand crank or with an electric motor drive with only limited power.

[0023] At the same time, it has surprisingly turned out within the scope of the invention that, by means of such a gear arrangement, the height adjustment can be achieved not only particularly effectively, but also particularly quickly.

[0024] Finally, it has been found according to the invention that such a gear arrangement is particularly compact, so that it requires very little space and therefore does not interfere with the inner or outer clearance profile of the car transporter.

[0025] According to one embodiment, the first input shaft can be designed such that the torque of a drive means for driving the linear drive, in particular the torque of a hand crank or an AKB Antriebstechnik GmbH

[0026] September 2, 2025, electric motor drive, which can be driven or transmitted to the input shaft. For this purpose, for example, the input shaft on the one hand and the hand crank or the electric motor drive on the other hand can be coupled to each other accordingly.

[0027] Unless otherwise specified, the term "moment" herein refers to torque.

[0028] According to one embodiment, it can be provided that a torque can be transmitted to the linear drive via the first output shaft or that a torque of the first output shaft can be driven off to the linear drive.

[0029] In one embodiment, the first linear drive may be designed as a spindle drive. In particular, if the first linear drive is designed as a spindle drive, it may comprise a threaded spindle and a spindle nut, wherein the at least one loading level is coupled to the spindle nut. It is known that in a spindle drive, the spindle nut is movable along the longitudinal axis of the threaded spindle by rotating the spindle along its longitudinal axis. This movement of the spindle nut along the longitudinal axis of the threaded spindle allows the loading level coupled to the spindle nut to be adjusted in height. The at least one loading level may be coupled to the spindle nut via at least one coupling element. In one embodiment, the at least one loading level may be coupled to the spindle nut via a sliding block.

[0030] In one embodiment, the first linear drive can be arranged on the frame. Preferably, the first linear drive can be fixed to the frame. Preferably, the first linear drive can be arranged on or in a vertically extending element of the frame, more preferably on or in a vertically extending steel profile of the frame.

[0031] In one embodiment, it can be provided that a torque can be transmitted to the threaded spindle via the output shaft, or that the output shaft drives the threaded spindle. This causes the threaded spindle to rotate about its longitudinal axis, so that the spindle nut rotates along the longitudinal axis of the AKB Antriebstechnik GmbH

[0032] September 2, 2025

[0033] The threaded spindle is movable and at least one loading level coupled to the spindle nut is height-adjustable.

[0034] According to one embodiment, the first drive train may include a first torque path, i.e., a path along which torque can be transmitted from one element of the torque path to a downstream element of the torque path. The first torque path for torque transmission from the input shaft to the output shaft may comprise the following components in sequence: the first input shaft, the worm gear stage, the planetary gear stage, and the first output shaft.

[0035] In other words, the first drive train is designed such that a torque can be transmitted from the first input shaft to the worm gear stage downstream of it, from this to the planet gear stage downstream of the worm gear stage, and from this to the first output shaft downstream of the planet gear stage.

[0036] According to the invention, it has been found that such a torque path allows a torque to be transferred from the first input shaft to the first output shaft particularly effectively, quickly and with high efficiency.

[0037] According to one embodiment, the first transmission arrangement may further comprise at least one bevel gear stage. The first transmission arrangement thus comprises, in addition to the worm gear stage and the planetary gear stage, at least one bevel gear stage. Providing the at least one bevel gear stage for the first transmission arrangement offers several significant advantages for the car transporter according to the invention. For example, due to the possible axial offset of the input and output shafts, providing the at least one bevel gear stage allows for special consideration of the spatial constraints on the car transporter, such as when a hand crank or an electric motor drive cannot be attached in the linear axial direction of the worm gear stage or planetary gear stage. At the same time, AKB Antriebstechnik GmbH

[0038] 02.09.2025 at least one bevel gear stage offers the possibility, when choosing a transmission ratio of the at least one bevel gear stage i 1, of greater flexibility in the operation of the first gear arrangement, in particular also with regard to the overall transmission ratio of the first gear arrangement.

[0039] Insofar as the first transmission arrangement comprises at least one bevel gear stage, according to one embodiment it may be provided that the first torque path for torque transmission from the input shaft to the output shaft comprises in the following sequence: the first input shaft, the at least one bevel gear stage, the worm gear stage, the planetary gear stage and the first output shaft.

[0040] In one embodiment, the at least one bevel gear stage may comprise at least two bevel gear stages. Providing at least two bevel gear stages allows for particular consideration of the spatial constraints on a car transporter when a hand crank or an electric motor drive cannot be attached in the linear axial direction of the worm gear stage or planetary gear stage. Thus, in this embodiment, for example, a first bevel gear stage can be arranged at a desired position on the car transporter, preferably on the frame of the car transporter. This position can be easily reached by a drive mechanism and, due to the two bevel gear stages, can be chosen independently of the necessary position of the other gear stages, especially the worm gear stage and the planetary gear stage.Preferably, the torque of a hand crank or an electric motor can be driven onto the first bevel gear stage. Via a shaft, preferably a cardan shaft, the torque of the first bevel gear stage can be driven onto a second bevel gear stage. The torque of this second bevel gear stage, in turn, can be driven onto the worm gear stage, wherein preferably the axis of the output shaft of the second bevel gear stage and the axis of the shaft of the worm gear stage, in particular the axis of the worm shaft of the worm gear stage, are coaxial with each other. AKB Antriebstechnik GmbH.

[0041] September 2, 2025

[0042] In one embodiment, the worm gear stage and the planetary gear stage can be arranged in a single housing. This arrangement offers the particular advantage of a very compact design, thus easily preventing interference with the inner and outer clearance profiles.

[0043] Provided that the car transporter, as previously described, comprises at least two bevel gear stages, it may be provided that the second bevel gear stage, which, as above, drives onto the worm gear stage, is arranged together with the worm gear stage and the planetary gear stage in a housing.

[0044] Furthermore, in the embodiment described above, in which the car transporter comprises two bevel gear stages, the first bevel gear stage, onto which the hand crank or the electric motor drive preferably drives, can be arranged in a housing, the latter housing being a different or separate housing from the housing in which the second bevel gear stage, the worm gear stage and the planetary gear stage are arranged.

[0045] According to one embodiment, the worm gear stage may have a gear ratio i in the range of 2.5 to 3.5, preferably a gear ratio i in the range of 2.8 to 3.2.

[0046] According to one embodiment, the planetary gear stage with rotary transmission can be designed for two-shaft operation.

[0047] As is known, planetary gear sets with a reversible gear ratio in two-shaft operation comprise two central gear shafts (sun gear shaft and ring gear) and a carrier shaft, the carrier shaft carrying the planet gears (reversible gears). The carrier shaft is therefore also referred to as the planet carrier. According to one embodiment, a planetary gear stage with a reversible gear ratio in two-shaft operation is provided with a stationary ring gear. AKB Antriebstechnik GmbH

[0048] September 2, 2025

[0049] As is well known, a worm gear comprises a worm shaft and a worm wheel, with the thread of the worm shaft engaging in the tooth gaps of the worm wheel.

[0050] According to one embodiment, it can be provided that a torque can be transmitted to the sun gear shaft of the planetary gear stage by the worm wheel of the worm gear stage, or that the worm wheel of the worm gear stage drives onto the sun gear shaft of the planetary gear stage.

[0051] According to one embodiment, the shaft of the planetary gear stage can be provided for as the first output shaft.

[0052] According to one embodiment, the planetary gear stage may have a gear ratio i in the range of 3.5 to 4.5, preferably a gear ratio i in the range of 3.7 to 4.1.

[0053] According to one embodiment, the first output shaft can be the output shaft of the planetary gear stage, preferably the web shaft of the planetary gear stage.

[0054] According to the invention, it was surprisingly found that by means of a worm gear stage and planetary gear stage designed as above, which also preferably have the above transmission ratio, a particularly effective, in particular a fast height adjustment of the loading level with a particularly high efficiency can be achieved.

[0055] According to one embodiment, the first output shaft and the threaded spindle can be connected to each other via a coupling.

[0056] A torque can be transmitted from the first output shaft to the threaded spindle via the coupling. An elastic coupling, such as a jaw coupling, is preferred. AKB Antriebstechnik GmbH

[0057] September 2, 2025

[0058] In one embodiment, the first gear arrangement can be provided without being switchable. This has the particular advantage that the first gear arrangement can be made especially simple, robust, and compact.

[0059] According to one embodiment, the first drive train can be braked. Such brakeability of the first drive train has the particular advantage that the at least one loading level can be locked in a defined position by braking or securing the first drive train. Preferably, at least one cone brake or at least one wedge brake can be provided for braking the first drive train, which can be engaged with an element of the first drive train in such a way that the first drive train can be braked. Insofar as the first transmission arrangement, as described herein, comprises at least one bevel gear stage, according to one embodiment, at least one of the bevel gear stages can include a brake, preferably a cone brake, for braking the first drive train.Preferably, the first bevel gear stage described above includes a brake, preferably a bevel brake.

[0060] Insofar as the transmission arrangement, as described herein, comprises a first bevel gear stage and a second bevel gear stage, a preferred embodiment may provide that the first bevel gear stage has a gear ratio i in the range of 0.9 to 1.1 and the second bevel gear stage has a gear ratio i in the range of 1.1 to 1.5.

[0061] Furthermore, according to one embodiment, the first bevel gear stage and the second bevel gear stage may be straight-toothed.

[0062] Furthermore, according to one embodiment, it can be provided that at least one of the bevel gear stages, preferably the first bevel gear stage, includes an overload clutch.

[0063] For the height adjustability of the at least one loading level of the transport trolley according to the invention, it can be advantageous if the at least one loading level is height-adjustable by at least two linear drives. For example, the at least one loading level can be operatively connected to at least one linear drive on opposite sides. This allows the at least one loading level to be particularly AKB Antriebstechnik GmbH

[0064] The system should be effectively height-adjustable by September 2, 2025, while simultaneously effectively suppressing any tilting of at least one loading level. In this respect, one embodiment may provide that the at least one linear drive comprises a second linear drive in addition to the first.

[0065] According to one embodiment, the at least one drive unit may include a second drive train, wherein the second drive train is designed to drive a second linear drive of the at least one linear drive, and wherein the second drive train includes: a second input shaft, a second output shaft, and a second gear arrangement for torque transmission between the second input shaft and the second output shaft, wherein the second gear arrangement is multi-stage and includes the following gear stages: a worm gear stage, and a planetary gear stage.

[0066] According to one embodiment, the at least one loading level can be operatively connected to the first linear drive on one side and to the second linear drive on the opposite side, wherein the at least one loading level is height-adjustable by means of the first and second linear drives. The "sides" of the at least one loading level are the sides of the at least one loading level pointing away from the longitudinal axis of the car transporter.

[0067] According to one embodiment, the second linear drive may include the features of the first linear drive disclosed herein, preferably being functionally identical to the first linear drive.

[0068] According to one embodiment, the second drive train may include the features of the first drive train disclosed herein, and is thus functionally identical to the first drive train.

[0069] In one embodiment, the second gear arrangement may be provided to include the features of the first gear arrangement disclosed herein, and thus be functionally identical to the first gear arrangement. AKB Antriebstechnik GmbH

[0070] September 2, 2025

[0071] Insofar as the first and second drive trains are designed to act in the same manner, this has the particular advantage that the at least one loading level can be adjusted in height particularly effectively and uniformly. Such effective and uniform height adjustment of the at least one loading level can be achieved in a particularly effective way by driving the first and second linear drives synchronously. According to one embodiment, it can be provided that the first linear drive can be driven synchronously via the first drive train and the second linear drive via the second drive train.

[0072] In one embodiment, the first input shaft of the first drive train can drive the second input shaft of the second drive train. This allows the first and second linear drives to be driven synchronously via the first and second drive trains particularly easily and effectively. In particular, it is sufficient to drive the first or second input shaft, for example, by a single hand crank or an electric motor to drive the first and second linear drives synchronously.

[0073] In one embodiment, the first input shaft and the second input shaft can be positively connected to each other. This ensures that the first drive train and the second drive train always run synchronously.

[0074] Further features of the invention can be found in the claims, the figures and the associated figure description.

[0075] An embodiment of the invention is shown in the figures and explained in more detail in the following figure description.

[0076] All features of the invention can be combined individually or in combination in any way desired.

[0077] The figures show AKB Antriebstechnik GmbH

[0078] September 2, 2025

[0079] Figure 1 shows a side view of an embodiment of a car transporter according to the invention with motor vehicles mounted on the loading levels;

[0080] Figure 2 is a perspective view from a slant above of the car transporter according to Figure 1 without motor vehicles;

[0081] Figure 3 shows a schematic drawing of a section of a first drive train of the car transporter according to Figure 1 in the area of ​​a first bevel gear stage;

[0082] Figure 4 shows a schematic drawing of a section of the first drive train of the car transporter according to Figure 1 in the area of ​​a second bevel gear stage, a worm gear stage and a planetary gear stage;

[0083] Figure 5 shows another schematic drawing of the section of the first drive train according to Figure 4; and

[0084] Figure 6 shows a sectional view of a first linear drive of the car transporter according to Figure 1.

[0085] The car transporter shown in Figures 1 and 2 is designated in its entirety by reference numeral 1. The car transporter 1 comprises a frame 2 made of profiled steel. Furthermore, the car transporter 1 comprises wheels 3, on which it rests on a track 4. The car transporter 1 also comprises two loading levels, namely a lower loading level 6 and an upper loading level 5 arranged above it, both of which are mounted on the frame 2. Both loading levels 5 and 6 are designed to accommodate motor vehicles 7. In the exemplary embodiment, several motor vehicles 7, in the form of passenger cars, are arranged one behind the other on both the lower loading level 6 and the upper loading level 5.

[0086] While the lower loading level 6 is fixed to the frame 2, the upper loading level 5 is height-adjustable and mounted on the frame 2. The car transporter 1 includes a total of four linear drives 8 (AKB Antriebstechnik GmbH) for adjusting the height of the upper loading level 5.

[0087] September 2, 2025

[0088] 9, 10, 11. Each of the four linear drives 8, 9, 10, 11 can be driven by its respective drive unit. Each of the four linear drives 8, 9, 10, 11 is designed as a spindle drive and is attached to a vertical, column-like element of the frame 2. Two linear drives, namely linear drives 8, 9 on one side and linear drives 10, 11 on the other, are arranged on opposite sides of the loading platform 5. As further explained below, the loading platform 5 is operatively connected to the four linear drives 8, 9, 10, 11 in such a way that its height can be adjusted by means of the linear drives 8, 9, 10, 11.

[0089] Linear drives 8, 9 can be driven by a drive unit 100, while linear drives 10, 11 can be driven by another drive unit 200.

[0090] The drive unit 100 comprises a first drive train 101 for driving the linear drive 8 and a second drive train 135 for driving the linear drive 9.

[0091] The first drive train 101 comprises, as shown in Figures 3 to 5, a first input shaft 109, a web shaft 128 designed as a first output shaft and a first gear arrangement for torque transmission between the first input shaft 109 and the first output shaft (web shaft) 128, wherein the first gear arrangement comprises a first bevel gear stage 114, a second bevel gear stage 119, a worm gear stage 120 and a planetary gear stage 136.

[0092] The first bevel gear stage 114 is arranged in a housing 102. The first bevel gear stage 114 comprises the first input shaft 109, which carries a bevel gear 115 of the first bevel gear stage 114. The first input shaft 109 is rotatably mounted in the housing 102 via rolling bearings 113. The bevel gear 115 drives a bevel gear 116 of the first bevel gear stage 114, which is arranged on a shaft 103. The axes of the input shaft 109 and the shaft 103 intersect at right angles. The shaft 103 is rotatably mounted in the housing 102 via rolling bearings 117. The first input shaft 109 can be braked by means of a bevel brake 112, which is also arranged in the housing 102. Furthermore, the first bevel gear stage 114 comprises an overload clutch 111, which is also arranged in the housing 102.At the end of the first input shaft 109, a coupling piece 110 is positively attached to it, which can be coupled to a drive means (not shown), for example a hand crank, such that a torque can be transmitted to the first input shaft 109 via the drive means. AKB Antriebstechnik GmbH.

[0093] September 2, 2025

[0094] The first input shaft 109 is further connected to a second input shaft 105 of the second drive train 135 via a positive-locking, load-holding overload coupling 118. The second input shaft 105 is designed as a cardan shaft.

[0095] The shaft 103, onto which the first bevel gear stage 114 drives, is also designed as a cardan shaft.

[0096] The shaft 103 drives onto a second bevel gear stage 119 of the first drive train 101, which together with the worm gear stage 120 and the planetary gear stage 136 is arranged in a further housing 104 separate from the housing 102.

[0097] Shaft 103 is rotatably mounted in housing 104 via rolling bearings 125 and carries a bevel gear 121 of the second bevel gear stage 119. Bevel gear 121 drives a bevel gear 122 of the second bevel gear stage 119, with the second bevel gear 122 being mounted on the worm shaft 123 of the worm gear stage 120. The axes of shaft 103 and worm shaft 123 intersect at right angles. Worm shaft 123 is rotatably mounted in housing 104 via rolling bearings 126. Worm shaft 123 drives a worm gear 137 of worm gear stage 120. Worm gear 137 is fixedly mounted on the sun gear shaft 124 of planetary gear stage 136.

[0098] The planetary gear stage 136 is clearly visible in Figure 5. The sun gear shaft 124 is rotatably mounted in the housing 104 via rolling bearings 125. The planetary gear stage 136 is designed with an orbital transmission ratio in two-shaft operation. The sun gear shaft 124 drives the planet gears 126 onto the carrier shaft 128. The planetary gear 127 of the planetary gear stage 136 is fixed to the housing 104. The carrier shaft 128 is rotatably mounted in the housing 104 via rolling bearings 129. An elastic coupling 130 is arranged on the end of the carrier shaft 128 that protrudes from the housing 104, allowing the carrier shaft 128 to be coupled to the threaded spindle 131 of the linear actuator 8. The carrier shaft 128 thus represents the first output shaft of the first drive train 101.

[0099] Housings 102 and 104 are each permanently attached to frame 2. AKB Antriebstechnik GmbH

[0100] September 2, 2025

[0101] The first bevel gear stage 114 has a gear ratio i of 1 and essentially serves to redirect the torque at right angles from the hand crank to the shaft 103.

[0102] The second bevel gear stage 119 has a dual function. On the one hand, it serves to redirect torque at right angles from the shaft 103 to the worm shaft 123. On the other hand, it also serves to influence the overall transmission ratio of the first gear stage and for this purpose has a transmission ratio i 1, namely a transmission ratio i of 1.3.

[0103] The worm gear stage 120 also has a gear ratio i of 3.0 and the planetary gear stage 136 has a gear ratio i of 3.9.

[0104] Based on these gear ratios of the gear stages, the upper loading level 5 can be adjusted in height very effectively, quickly, and with high efficiency via the linear drive 8. The linear drive 8 comprises the threaded spindle 131, which is connected at its base to the web shaft 128 via the coupling 130 in such a way that a torque can be transmitted to the threaded spindle 130 via the web shaft 128. At its head, the threaded spindle 131 is rotatably mounted on a bearing located on the frame 2. The spindle nut 133 runs on the threaded spindle 131. A coupling element in the form of a sliding block 134 is coupled to the spindle nut 133. The sliding block 134 has a receptacle for receiving a pin (not shown) attached to the upper loading level 2.The upper loading level 2 is operatively connected to the linear drive 8 via this pin guided in the sliding block 134, such that it is height-adjustable when the spindle nut 133 moves up and down along the spindle shaft 131.

[0105] The second drive train 135 is designed to act in concert with the first drive train 101 to drive the linear drive 9.

[0106] In this process, a torque transmitted via the coupling piece 110 to the first input shaft 109 by means of a hand crank is transmitted synchronously to the second drive train 135 by means of the second input shaft 105, which is positively connected to the first input shaft 109. Corresponding to the first input shaft 109, the second input shaft 105 drives a bevel gear stage of the second drive train 135, which is arranged in a housing 106. This bevel gear stage drives a cardan shaft 107 of the second drive train 135, which is located in a housing 108. AKB Antriebstechnik GmbH

[0107] The gear stages of the second drive train 135, arranged on September 2, 2025, drive the gears. The gear stages arranged in the housing 108 of the second drive train 135 are designed to act in unison with the gear stages in the housing 104 and drive onto the threaded spindle of the linear drive 9.

[0108] The drive unit 200, which can be driven independently of the drive unit 100 and is essentially functionally identical to the drive unit 100. In this respect, the further linear drives 10, 11 can be driven synchronously via the additional drive unit 200, in order to also adjust the height of the upper loading level 2.

[0109] In practical application, to adjust the height of the upper loading level using the drive unit 100, a hand crank is first attached to the coupling piece 110 and the hand crank is turned.

[0110] The torque generated in this way is transmitted via the coupling piece 110 of the first drive train 101 to the first input shaft 109 and thus to the first bevel gear stage 114, via this to shaft 103, via this to the second bevel gear stage 119, via this to the worm gear stage 120, via this to the planetary gear stage 136 and finally via the output shaft 128 by means of the elastic coupling 130 to the threaded spindle 131. The resulting rotation of the threaded spindle 131 causes the spindle nut 133 to run up or down.

[0111] In the same way, the second drive train 135, whose second input shaft 105 is positively connected to the first input shaft 109, is driven synchronously to the first drive train 101, so that the linear drive 9 also runs synchronously to the linear drive 8.

[0112] This allows the upper loading level 5, which is coupled to the linear drives 8, 9, to be adjusted in height.

Claims

AKB Antriebstechnik GmbH September 2, 2025 car transporter Patent claims 1. Car transport wagon (1), comprising 1.1 a frame (2), 1.2 at least one loading level (5), 1.3 at least one linear actuator (8, 9), and 1.4 at least one drive unit (100), wherein 1.5 at least one loading level (5) 1.5.1 arranged on the frame (2), 1.5.2 trained to receive motor vehicles (7) and 1.5.3 is operatively connected to the at least one linear drive (8, 9) in such a way that the at least one loading level (5) is height-adjustable by means of the at least one linear drive (8, 9), wherein 1.6 at least one drive unit (100) 1.6.1 is designed to drive the at least one linear drive (8, 9) and comprises the following: 1.6.2 a first powertrain (101), wherein 1.6.2.1 the first drive train (101) is designed to drive a first linear drive (8) of the at least one linear output (8, 9), and wherein 1.6.2.2 the first drive train (101) comprises the following: 1.6.2.2.1 a first input wave (109), 1.6.2.2.2 a first output wave (128), and 1.6.2.2.3 a first gear arrangement for transmitting torque between the first input shaft (109) and the first output shaft (128), wherein 1.6.2.2.3.1 the first gear arrangement is designed as a multi-stage assembly and comprises the following gear stages: 1.6.2.2.3.2 a worm gear stage (120), and 1.6.2.2.3.3 a planetary gear stage (136). AKB Antriebstechnik GmbH September 2, 2025 2. Car transporter (1) according to claim 1, wherein a torque can be transmitted to the linear drive (8) via the first output shaft (128).

3. Car transport trolley (1) according to at least one of the preceding claims, wherein the first linear drive (8) comprises a threaded spindle (131) and a spindle nut (133) and wherein the at least one loading level (5) is coupled to the spindle nut (133).

4. Car transporter (1) according to claim 3, wherein a moment can be transmitted to the threaded spindle (131) via the output shaft (128).

5. Car transporter (1) according to at least one of the preceding claims, wherein the first drive train (101) comprises a first torque path, wherein the first torque path for torque transmission from the input shaft (109) to the output shaft (128) comprises in the following sequence: the first input shaft (109), the worm gear stage (120), the planetary gear stage (136) and the first output shaft (128).

6. Car transporter (1) according to at least one of the preceding claims, wherein the first transmission arrangement further comprises at least one bevel gear stage (114, 119).

7. Car transporter (1) according to claim 6, wherein the first torque path for torque transmission from the input shaft (109) to the output shaft (128) comprises in the following sequence: the first input shaft (109), the at least one bevel gear stage (114, 119), the worm gear stage (120), the planetary gear stage (136) and the first output shaft (128). AKB Antriebstechnik GmbH September 2, 2025 8. Car transporter (1) according to at least one of the preceding claims, wherein the worm gear stage (120) and the planetary gear stage (136) are arranged in a housing (104).

9. Car transporter (1) according to at least one of the preceding claims, wherein the worm gear stage (120) has a gear ratio i in the range of 2.5 to 3.

5.

10. Car transporter (1) according to at least one of the preceding claims, wherein a moment can be transmitted to the sun gear shaft (124) of the planetary gear stage (136) via the worm gear (137) of the worm gear stage (120).

11. Car transporter (1) according to at least one of the preceding claims, wherein the planetary gear stage (136) is designed with a rotary transmission in two-shaft operation.

12. Car transporter (1) according to at least one of the preceding claims, wherein the web shaft (128) of the planetary gear stage (136) is the first output shaft (128).

13. Car transporter (1) according to at least one of the preceding claims, wherein the planetary gear stage (136) has a gear ratio i in the range of 3.5 to 4.

5.

14. Car transporter (1) according to at least one of the preceding claims, wherein the at least one drive unit (100) comprises a second drive train (135), wherein the second drive train (135) is configured to drive a second linear drive (9) of the at least one linear output (8, 9), and wherein the second drive train (135) comprises: a second input shaft, a second output shaft, and a second gear arrangement for torque transmission between the second input shaft and the second output shaft, wherein the second gear arrangement is configured as a multi-stage system and comprises the following gear stages: AKB Antriebstechnik GmbH 02.09.2025 a worm gear stage, and a planetary gear stage.

15. Car transporter (1) according to claim 14, wherein the first linear drive (8) can be driven synchronously via the first drive train (101) and the second linear drive (9) can be driven synchronously via the second drive train (135).

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