Rigid axle for a motor vehicle
The innovative rigid axle design with independently driven shafts and planetary gears addresses the challenge of ground clearance and packaging in electrically driven vehicles, achieving compactness and improved efficiency by eliminating differentials and using concentric drive units.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MAN TRUCK & BUS SE
- Filing Date
- 2025-11-04
- Publication Date
- 2026-05-21
AI Technical Summary
Existing electrically driven rigid axles for motor vehicles face challenges in achieving optimal ground clearance and packaging due to large components and high-speed motors with complex gear ratios, which affect efficiency and service life.
A rigid axle design featuring a first and second drive shaft within separate axle housings, each with a planetary gear set, driven independently by a drive device, eliminating the need for a differential and allowing for compact packaging and improved ground clearance through concentrically arranged drive units and a housing that houses the drive system.
The design reduces overall technical effort, enhances ground clearance, and optimizes packaging by eliminating differentials and allowing for smaller, efficiently arranged drive units, improving performance and durability.
Smart Images
Figure EP2025081810_21052026_PF_FP_ABST
Abstract
Description
[0001] Rigid axle for a motor vehicle
[0002] Description
[0003] The invention relates to a rigid axle (e.g. electrically driven) for a motor vehicle and a motor vehicle comprising a rigid axle.
[0004] Especially in off-road applications, but also in normal road use, the greatest possible ground clearance or the most compact packaging possible is desirable for driven rigid axles.
[0005] In order to simultaneously meet the performance requirements of the drive, currently known electrically driven rigid axles use comparatively large components that do not meet the requirements for ground clearance and packaging, or make it difficult to meet them.
[0006] Furthermore, high-speed motors with a high gear ratio are usually installed, which brings further disadvantages in terms of complexity, efficiency, the service life of the bearings and seals.
[0007] Therefore, it is an object of the invention to provide a rigid axle, in particular an improved and / or alternative rigid axle. In particular, it is, for example, an object to provide a rigid axle with improved ground clearance and packaging.
[0008] According to a first aspect, a rigid axle (e.g., electrically driven and steered) is provided for a motor vehicle (e.g., for a commercial vehicle).
[0009] The rigid axle comprises a first axle housing, a first drive shaft for driving a first vehicle wheel, a first planetary gear set, a second axle housing, a second drive shaft for driving a second vehicle wheel, and a second planetary gear set. The first drive shaft is located within the first axle housing (e.g., housed within and / or integrated into the first axle housing).
[0010] The first planetary gear is arranged to act between the first drive shaft and the first vehicle wheel.
[0011] The second drive shaft is located within the second axle housing (e.g., housed within and / or integrated into the second axle housing). The second planetary gear set is positioned between the second drive shaft and the second vehicle wheel.
[0012] The rigid axle further comprises a drive device which is arranged between the first axle body and the second axle body and which is designed to drive the first drive shaft and the second drive shaft independently of each other.
[0013] One advantage, for example, is that a differential and other gear ratios in the axle center section can be eliminated.
[0014] The proposed rigid axle can also offer advantages in terms of achievable ground clearance and / or packaging.
[0015] Furthermore, the overall technical effort can be reduced.
[0016] For example, the drive device may be configured to apply a rotational speed and / or torque to the first drive shaft and, independently of that, to apply a further rotational speed and / or torque to the second drive shaft.
[0017] For example, the drive system can comprise several car wheel hub motors (e.g., electric motors) mounted within the rigid axle. It is conceivable that at least one of the electric motors is driven by the first drive shaft and / or at least one other electric motor is driven by the second drive shaft.
[0018] For example, the first drive shaft and / or the second drive shaft can be a double-jointed shaft.
[0019] Furthermore, the first axle body can be a (e.g. left) axle stub and / or the second axle body can be a (e.g. right) axle stub.
[0020] The first and second drive shafts can be arranged concentrically. The main direction of extension (e.g., axial direction) of the first and / or second drive shaft can, in the installed position of the rigid axle in the vehicle, run parallel to the transverse direction and / or transverse to the longitudinal direction of the vehicle.
[0021] The drive device can be arranged concentrically to the first and / or second drive shaft. The first planetary gear set and / or the second planetary gear set can be designed for speed and / or torque conversion. For illustrative purposes only, the first planetary gear set and / or the second planetary gear set can have a gear ratio of i=4.
[0022] According to one embodiment, the drive device can have several first (e.g., electrical) drive units that are connected to the first drive shaft.
[0023] Alternatively or additionally, the drive device can have several second (e.g. electric) drive units that are connected to the second drive shaft.
[0024] For example, the first drive units can have at least two electric machines that are connected to the first drive shaft.
[0025] Furthermore, the second drive units can have at least two electric machines that are connected to the second drive shaft.
[0026] For example, the at least two electric machines can be designed with performance and installation space data comparable to today's passenger car wheel hub motors.
[0027] Therefore, the respective drive units can be dimensioned relatively small, which can offer advantages in terms of ground clearance and / or packaging, for example.
[0028] According to one embodiment, the several first drive units (e.g., each) can be designed as radial flux machines. Alternatively or additionally, the several second drive units (e.g., each) can be designed as radial flux machines.
[0029] Each radial flux machine can only have a single rotor located radially outside the stator of the respective radial flux machine.
[0030] Alternatively, the respective radial flux machine can have one rotor located radially inside the stator and another rotor located radially outside the stator. In this variant, it is conceivable that the respective radial flux machine is a double-rotor machine.
[0031] According to one embodiment, the multiple first drive units and / or the multiple second drive units can be designed as axial flux machines. For example, it is conceivable that the respective axial flux machines are stacked relative to each other in the axial direction of the drive shafts. It is also conceivable that the multiple first drive units and / or the multiple second drive units and / or the axial flux machines are designed, for example, by a single axial flux machine in the rotor-stator-rotor configuration (so-called internal stator configuration).
[0032] It is also conceivable that the several first drive units and / or the several second drive units and / or the axial flux machines are designed, for example, by a (e.g., single) axial flux machine in the stator-rotor-stator configuration (so-called internal rotor variant).
[0033] Furthermore, it is conceivable that each of the axial flux machines is formed by an axial flux machine in the configuration of rotor-stator-rotor or stator-rotor-stator.
[0034] According to one embodiment, the at least one first drive unit can have a (e.g., common) first hub that is rotationally fixed to the first drive shaft (e.g., via a splined connection). Furthermore, the drive units acting on a common hub can be electrically connected / coupled (e.g., 3-phase).
[0035] Alternatively or additionally, the at least one second drive unit can have a (e.g., shared) second hub that is rotationally fixed to the second drive shaft (e.g., via a splined connection). Furthermore, the drive units acting on a common hub can be electrically connected / coupled (e.g., 3-phase).
[0036] This allows the required installation space to be further reduced, which can offer advantages in terms of packaging.
[0037] According to one embodiment, the first hub can be connected in a rotationally fixed manner to at least one rotor (e.g. all rotors) of the several first drive units.
[0038] Alternatively or additionally, the second hub can be non-rotatably connected to at least one rotor (e.g. all rotors) of the several second drive units.
[0039] According to one embodiment, the rigid axle can have a housing (e.g., a hollow cylindrical one) which is arranged between the first axle body and the second axle body (e.g., viewed in a transverse direction of the vehicle and / or in the installation position of the rigid axle), with the drive device being arranged inside the housing (e.g., housed within the housing). The housing is preferably arranged concentrically to the axle bodies.
[0040] For example, the housing forms a third axle body arranged between the first and second axle bodies. Furthermore, it is conceivable that the drive device is arranged entirely within the housing.
[0041] For example, it may be advantageous if the drive device is arranged entirely within the rigid axis, which can offer further advantages in terms of the required installation space and / or packaging.
[0042] According to one embodiment, the first axle body and the second axle body can be attached to the first axle body and the second axle body by means of a common fastening device (e.g. at least one threaded rod passing through the housing).
[0043] This can further reduce the technical effort, for example.
[0044] According to one embodiment, the housing can have a first housing flange (e.g., a transverse frame of the housing). The first housing flange can have a bearing section on which the first drive shaft (e.g., via the first hub) is supported in the housing.
[0045] Alternatively or additionally, the first housing flange can have a stator section on which at least one stator of the several first drive units is formed. It is conceivable, for example, that magnets or electromagnets are attached to the stator section.
[0046] Alternatively or additionally, the housing can have a second housing flange (e.g., a cross member of the housing). The second housing flange can have a second bearing section on which the second drive shaft (e.g., via the second hub) is supported in the housing.
[0047] Alternatively or additionally, the second housing flange can have a stator section on which at least one stator of the several second drive units is formed. It is conceivable, for example, that magnets or electromagnets are attached to the stator section. A tapered roller bearing (e.g., in an O-arrangement) can be mounted on each of the respective bearing sections, by means of which the first hub and / or the second hub is supported on the housing side.
[0048] Preferably, the first housing flange and / or the second housing flange is integrally formed in one piece with the housing.
[0049] For example, the first housing flange and the second housing flange can protrude from the inside of the housing.
[0050] For example, deformations of the rigid axle (e.g. due to loading and impacts from uneven road surfaces) can be compensated for by means of the housing flanges and / or the cross members.
[0051] Furthermore, the cross braces can advantageously stiffen the housing.
[0052] Furthermore, the cross braces can decouple the respective bearing assembly from a deformation of an axle bridge.
[0053] According to one embodiment, the first drive shaft and the second drive shaft can be decoupled from each other and / or cannot be coupled. Preferably, the first drive shaft and the second drive shaft have no connection to each other (e.g., structural).
[0054] Alternatively or additionally, the rigid axle may not have an axle differential acting between the first drive shaft and the second drive shaft and / or a coupling element acting between the first drive shaft and the second drive shaft.
[0055] Alternatively or additionally, the rigid axle can have a coupling element acting between the first drive shaft and the second drive shaft in order to apply a drive torque from all drive units to one side of the wheel.
[0056] According to one embodiment, the rigid axle can have a first wheel housing for mounting the first vehicle wheel, wherein the first planetary gear set is arranged (e.g., mounted) within the first wheel housing. Alternatively or additionally, the rigid axle can have a second wheel housing for mounting the second vehicle wheel, wherein the second planetary gear set is arranged (e.g., mounted) within the second wheel housing.
[0057] For example, the first gear stage and / or the second gear stage can be arranged (e.g. completely) within an internal volume of the first wheel part housing and / or within an internal volume of the second wheel part housing.
[0058] This can offer further advantages, for example, regarding the required installation space and / or packaging.
[0059] Furthermore, it is conceivable that, in an application in a commercial vehicle, the gear ratio in the wheel section could bring the wheel section input speed very close to the typical wheel speeds in a passenger car and / or allow the high drive torque required for a truck to be achieved at the wheel.
[0060] According to one embodiment, the rigid axle can be designed as a steered rigid axle and / or a sprung rigid axle and / or a front axle.
[0061] According to a second aspect, a motor vehicle is provided. The motor vehicle has the rigid axle as disclosed herein.
[0062] Preferably, this is a commercial vehicle.
[0063] In other words, it can be a motor vehicle that, by its design and equipment, is specifically designed for the transport of persons, the transport of goods, or the towing of trailers. For example, the commercial vehicle could be a truck.
[0064] Optionally, the motor vehicle has the first motor vehicle wheel and the second motor vehicle wheel as disclosed herein, wherein the first drive shaft is connected to the first motor vehicle wheel (e.g. via the first planetary gear and / or the second planetary gear).
[0065] Furthermore, the second drive shaft can be connected to the second vehicle wheel (e.g., via the at least one second gear stage and / or the second wheel hub). According to one embodiment, the vehicle can have a chassis and the housing as disclosed herein, wherein the housing is not directly and / or immediately attached to the chassis. For example, it is conceivable that the housing is attached to the chassis via a suspension system with the first axle assembly and / or the second axle assembly.
[0066] The embodiments, variants, and features of the invention described above can be combined with one another as desired. Further details and advantages of the invention are described below with reference to the accompanying drawings. These show:
[0067] Figure 1 shows a schematic representation of a rigid axle according to one embodiment; and
[0068] Figure 2 shows a schematic representation of a rigid axle according to one embodiment (partial view, sectional view).
[0069] The embodiments shown in the figures are at least partially identical, so that similar or identical parts are provided with the same reference numerals and, to avoid repetition, reference is also made to the description of the other figures for their explanation.
[0070] Figure 1 shows a rigid axle 100 according to an exemplary embodiment.
[0071] The rigid axle 100 has a first axle body 10, a first drive shaft 12 for driving a first motor vehicle wheel (not shown), a first planetary gear 62, a second axle body 20, a second planetary gear 72 and a second drive shaft 22 for driving a second motor vehicle wheel (not shown).
[0072] The first drive shaft 12 is arranged within the first axle body 10, e.g. by being received in the first axle body 10 and / or integrated into the first axle body 10.
[0073] The second drive shaft 22 is arranged within the second axle body 20, e.g., by being received in and / or integrated into the second axle body 20. The first planetary gear 62 and the second planetary gear 72 are each arranged to act between the first drive shaft 12 and the first vehicle wheel and between the second drive shaft 22 and the second vehicle wheel, respectively.
[0074] Furthermore, the rigid axle 100 has a first wheel housing 60 for mounting the first vehicle wheel and a second wheel housing 70 for mounting the second vehicle wheel. The first planetary gear 62 is arranged within the first wheel housing 60, while the second planetary gear 72 is arranged within the second wheel housing 70.
[0075] Therefore, the planetary gears 62, 72 in Figure 1 are only schematically symbolized by dashed lines.
[0076] The rigid axle 100 further comprises a drive device 30, which is arranged between the first axle body 10 and the second axle body 20 and which is designed to drive the first drive shaft 12 and the second drive shaft 22 independently of each other.
[0077] Preferably, the drive device 30 has several first drive units 32a-b and several second drive units 34a-b, each of which is drivenly connected to the first drive shaft 12 and the second drive shaft 22, respectively.
[0078] For example, the drive device 30 can comprise several car wheel hub motors (e.g., electric motors) that are mounted within the rigid axle 100.
[0079] The preferred drive units are 32a-b, 34a-b electric drive units.
[0080] It is conceivable, for example, that the multiple drive units 32a-b, 34a-b are designed as radial flux machines or as (e.g. stacked) axial flux machines.
[0081] Each radial flux machine can only have one rotor 32a', 32b'; 34a', 34b' located radially outside a stator 32a", 32b"; 34a", 34b"
[0082] As can be seen in Figure 2, the respective radial flux machine can also have a rotor 33a; 33b; 35a; 35b located radially inside a stator 32a", 32b"; 34a", 34b" and additionally a rotor 32a', 32b'; 34a', 34b' located radially outside the stator 32a", 32b"; 34a", 34b". In this variant, it is conceivable that the respective radial flux machine is a so-called double-rotor machine. Figure 1 and especially Figure 2 show that the first drive shaft 12 and the second drive shaft 22 are decoupled from each other and cannot be coupled.
[0083] Preferably, the first drive shaft 12 and the second drive shaft 22 have no structural connection to each other.
[0084] In other words, it is conceivable that there is no drive connection between the first drive shaft 12 and the second drive shaft.
[0085] For example, the rigid axle 100 may not have an axle differential acting between the first drive shaft 12 and the second drive shaft 22 and / or a coupling element (e.g., no clutch) acting between the first drive shaft 12 and the second drive shaft 22.
[0086] Figure 2 shows a rigid axle 100 according to an embodiment (partial view; sectional view), in particular to illustrate the drive device 30.
[0087] Preferably the rigid axle 100 has a (e.g. hollow cylindrical) housing 40 which, viewed in an axial direction of the rigid axle 100, is arranged between the first axle body 10 and the second axle body 20, wherein the drive device 30 is arranged (e.g. received) inside the housing 40.
[0088] For example, the housing 40 forms a third axle body arranged between the first axle body 10 and the second axle body 22. Furthermore, it is conceivable that the drive device 30 is arranged entirely within the housing 40.
[0089] Optionally, the drive device 30 is arranged completely within the rigid axle 100.
[0090] Preferably, the first axle body 10 and the second axle body 20 are attached to the housing by means of a common fastening device 50 (here by way of example: by means of at least one threaded rod running through the housing 40).
[0091] The housing 40 can have a first housing flange 42 and a second housing flange 44 (e.g., cross members of the housing). The first housing flange 42 and the second housing flange 44 can each have a bearing section on which the first drive shaft 12 (e.g., via the first hub 32c) and the second drive shaft 22 (e.g., via the second hub 34c), respectively, are supported in the housing 40. Furthermore, the first housing flange 42 and the second housing flange 44 can each have a stator section on which at least one stator 32a", 32b", 34a", 34b" of the multiple first and second drive units 32a, 32b, 34a, 34b" is formed. It is conceivable, for example, that magnets or electromagnets (e.g., coils) are attached to each stator section.
[0092] Furthermore, the first housing flange 42 and the second housing flange 44 can each have at least one fluid guide channel for cooling the stators 32a", 32b", 34a", 34b" and optionally connections for the inlet and outlet of a coolant (not shown). By way of example only, the at least one fluid guide channel can be designed to guide a fluidic coolant (e.g., a water-glycol mixture or oil).
[0093] At the respective bearing sections, a tapered roller bearing (e.g. in an O-arrangement) can be mounted, by means of which the first hub 32c and / or the second hub 34c is mounted on the housing side.
[0094] Preferably, the first housing flange 42 and the second housing flange 44 are integrally formed in one piece with the housing 40.
[0095] For example, deformations of the rigid axle 100 (e.g. due to loading and impacts from uneven road surfaces) can be compensated for by means of the transverse ribs.
[0096] Furthermore, the cross braces can stiffen the housing 40 and decouple the respective bearing assembly 42, 44 from deformation of an axle bridge of the rigid axle 100.
[0097] For example, the first housing flange 42 and the second housing flange 44 can protrude from the inside of the housing 40.
[0098] Furthermore, the several first drive units 32a-b can have a common first hub 32c which is rotationally fixed to the first drive shaft 12 (e.g. via a splined toothing stage 32d).
[0099] The first hub 32c can be connected to the respective rotor 32a', 32b', 33a, 33b of the several first drive units 32a-b in a rotationally fixed manner (e.g. by means of a screw connection).
[0100] It is also conceivable that the several second drive units 34a-c have a common second hub 34c, which is rotationally fixed to the second drive shaft 22 (e.g., via a splined connection 34d). The second hub 34c can be rotationally fixed to the respective rotor 34a', 34b', 35a, 35b of the several second drive units 34a-b (e.g., by means of a screw connection).
[0101] Alternatively or additionally, the at least one second drive unit 34a-b can have a second hub 34c which is rotatably connected to the second drive shaft 22 (e.g. via a splined shaft stage 34d).
[0102] Preferably the rigid axle 100 is a steered rigid axle 100 and / or a sprung rigid axle 100 and / or a front axle of a motor vehicle (not shown).
[0103] Preferably, this is a commercial vehicle.
[0104] In other words, it can be a motor vehicle that, by its design and equipment, is specifically designed for the transport of persons, the transport of goods, or the towing of trailers. For example, the commercial vehicle could be a truck.
[0105] The invention is not limited to the preferred embodiments described above. Rather, a multitude of variants and modifications are possible, which also make use of the inventive concept and therefore fall within the scope of protection. Furthermore, the invention also claims protection for the subject matter and features of the dependent claims, irrespective of the referenced features and claims. List of reference numerals
[0106] 10 first axle body
[0107] 12 first drive shaft
[0108] 20 second axle body
[0109] 22 second drive shaft
[0110] 30 Drive device
[0111] 32a-b first electric drive units
[0112] 32a' external rotor of the first electric drive unit 32a 32a" stator of a first electric drive unit
[0113] 32b' external rotor of the first electric drive unit 32b 32b" stator of a first electric drive unit
[0114] 32c first hub
[0115] 32d first splined shaft stage
[0116] 33a-b first internal rotor
[0117] 34a-b second electric drive units
[0118] 34a' external rotor of the second electric drive unit 34a 34a" stator of a second electric drive unit
[0119] 34b' external rotor of the second electric drive unit 34a 34b" stator of a second electric drive unit
[0120] 34c second hub
[0121] 34d second splined shaft stage
[0122] 35a-b second inner rotor
[0123] 40 cases
[0124] 42 first housing flange
[0125] 44 second housing flange
[0126] 50 fastening device
[0127] 60 first wheel part housing
[0128] 62 first planetary gear
[0129] 70 second wheel part housing
[0130] 72 second planetary gear
[0131] 100 rigid axle
[0132] A Axial direction
Claims
Patent claims 1. Rigid axle (100) for a motor vehicle, preferably for a commercial vehicle, comprising: a first axle body (10), a first planetary gear set (62) and a first drive shaft (12) for driving a first motor vehicle wheel, wherein the first drive shaft (12) is arranged inside the first axle body (10) and the first planetary gear set (62) is arranged to act between the first drive shaft (12) and the first motor vehicle wheel; a second axle body (20), a second planetary gear set (72) and a second drive shaft (22) for driving a second motor vehicle wheel, wherein the second drive shaft (22) is arranged inside the second axle body (20) and the second planetary gear set (72) is arranged to act between the second drive shaft (22) and the second motor vehicle wheel; and a drive device (30) which is arranged between the first axle body (10) and the second axle body (20) and which is designed to drive the first drive shaft (12) and the second drive shaft (22) independently of each other.
2. Rigid axle (100) according to claim 1, wherein the drive device (30) has several first, preferably electric, drive units (32a-b) which are drive-connected to the first drive shaft (12) and / or has several second, preferably electric, drive units (34a-b) which are drive-connected to the second drive shaft (22).
3. Rigid axle (100) according to claim 2, wherein the multiple first drive units (32a-b) and / or the multiple second drive units (34a-b) are designed as radial flux machines.
4. Rigid axle (100) according to claim 3, wherein the respective radial flux machine: exclusively one rotor (32a', 32b'; 34a', 34b') located radially outside a stator (32a", 32b"; 34a", 34b"); or a rotor (33a; 33b; 35a; 35b) located radially inside a stator (32a“, 32b“; 34a“, 34b“) and additionally a rotor (32a', 32b'; 34a', 34b') located radially outside the stator (32a“, 32b“; 34a“, 34b“).
5. Rigid axle (100) according to claim 2, wherein the multiple first drive units (32a-b) and / or the multiple second drive units (34a-b) are designed as axial flux machines, preferably stacked in the axial direction (A) of the drive shafts (12, 14).
6. Rigid axle (100) according to one of claims 2 to 5, wherein the several first drive units (32a-b) have a common first hub (32c) which is non-rotatably connected to the first drive shaft (12), preferably via a splined toothing stage (32d), and / or the several second drive units (34a-b) have a common second hub (34c) which is non-rotatably connected to the second drive shaft (22), preferably via a splined toothing stage (34d).
7. Rigid axle (100) according to claim 6, wherein the first hub (32c) is non-rotatably connected to at least one rotor (32a', 32b', 33a, 33b) of the several first drive units (32a-b) and / or the second hub (34c) is non-rotatably connected to at least one rotor (34a', 34b', 35a, 35b) of the several second drive units (34a-b).
8. Rigid axle (100) according to one of the preceding claims, comprising a housing (40), preferably hollow cylindrical, which is arranged between the first axle body (10) and the second axle body (20), preferably viewed in an axial direction (A) of the drive shafts (12, 22), wherein the drive device (30) is arranged inside the housing (40).
9. Rigid axle (100) according to claim 8, wherein the first axle body (10) and the second axle body (20) are attached to the housing by means of a common fastening device (50), preferably at least one threaded rod extending through the housing (40).
10. Rigid axle (100) according to one of claims 8 or 9, wherein the housing (40) comprises: a first housing flange (42) having a bearing section on which the first drive shaft (12), preferably via the first hub (32c), is mounted in the housing (40), and / or having a stator section on which at least one stator (32a", 32b) of the several first drive units (32a, 32b) is formed, wherein preferably the first housing flange (42) has at least one fluid guide channel for cooling the at least one stator (32a", 32b); and / or a second housing flange (44) having a bearing section on which the second drive shaft (22), preferably via the second hub (34c), is mounted in the housing (40) is mounted, and / or has a stator section on which at least one stator (34a“, 34b“) of the several second drive units (34a, 34b) is formed, wherein preferably the second housing flange (44) has at least one fluid guide channel for cooling the at least one stator (34a“, 34b“).
11. Rigid axle (100) according to one of the preceding claims, wherein: the first drive shaft (12) and the second drive shaft (22) are drive-wise decoupled from each other and / or cannot be coupled; and / or the rigid axle (100) does not have an axle differential acting between the first drive shaft (12) and the second drive shaft (22) and / or a coupling element acting between the first drive shaft (12) and the second drive shaft (22); and / or the rigid axle (100) has a coupling element acting between the first drive shaft (12) and the second drive shaft (22) in order to apply a drive torque of all drive units (32a-b; 34a-b) to one side of the wheel.
12. Rigid axle (100) according to one of the preceding claims, comprising: a first wheel housing (60) for mounting the first motor vehicle wheel, wherein the first planetary gear set (62) is arranged inside the first wheel housing (60); and / or a second wheel part housing (70) for mounting the second motor vehicle wheel, wherein the second planetary gear set (72) is arranged inside the second wheel part housing (70).
13. Rigid axle (100) according to one of the preceding claims, wherein the rigid axle (100) is designed as a steered rigid axle (100) and / or as a sprung rigid axle (100) and / or as a front axle.
14. Motor vehicle, preferably commercial vehicle, comprising the rigid axle (100) according to one of the preceding claims.
15. Motor vehicle according to claim 14, comprising a chassis and the housing (40) according to any one of claims 8 to 10, wherein the housing (40) is not directly and / or not immediately attached to the chassis.