Chassis for commercial vehicle

Abstract

The invention relates to a chassis (12) for a utility vehicle (10), comprising an axle (14), by means of which at least two wheels (20, 22) of the utility vehicle (10), which can be rotated about a respective wheel axis of rotation (16, 18), can be supported on a frame (28) of the utility vehicle (10), at least one adjustment device (36) being provided, which can be adjusted by means of the wheel axis of rotation (16, 18) of the wheel axis of rotation (16, 18) of the wheel axis of rotation (16, 18) of the wheel axis of rotation (16, 18) of the wheel axis of rotation (16, 18) of the wheel axis of rotation (16, 18). According to the invention, the axle (14) is mounted so as to be pivotable with respect to the frame (28) about a pivot axis (40), which extends obliquely or perpendicularly with respect to the respective wheel rotational axis (16, 18), in order to achieve a turning or turning of the commercial vehicle (10).

Description

[0001] The invention relates to a chassis for a commercial vehicle according to the preamble of claim 1 .

[0002] DE 10 2018 122 991 A1 discloses a steering axle for a vehicle, comprising a braking device and a steering rod for transmitting a steering movement to the wheels of the axle, wherein a braking force is applied to the steering rod in a braking state of the braking device.

[0003] In addition, DE 197 02 457 A1 discloses a commercial vehicle having a frame, a front axle steered by means of a knuckle steering mechanism and a steered rear axle. In addition, an articulated vehicle is known from AT 28 158 E. In addition, AT 371 408 B discloses a self-engaging axle for a vehicle.

[0004] The object of the present invention is to provide a chassis for a commercial vehicle, which in particular improves the maneuverability of the commercial vehicle.

[0005] This object is achieved according to the invention by a chassis for a commercial vehicle having the features of claim 1. Advantageous embodiments with suitable inventive developments are specified in the remaining claims.

[0006] The present invention relates to a chassis for a commercial vehicle. For example, the commercial vehicle is designed as a truck, in particular a saddle tractor. For example, the commercial vehicle is designed as a saddle vehicle train, which includes a saddle tractor head. The saddle vehicle train can especially include a saddle semi-trailer. Therefore, the saddle vehicle train can, for example, refer to a vehicle train composed of a saddle tractor head and a saddle semi-trailer. Alternatively, the commercial vehicle can, for example, be designed as a bus or a passenger car. For example, the commercial vehicle is designed as a heavy commercial vehicle.

[0007] The chassis has at least one axle, by means of which at least two wheels of the commercial vehicle rotatable about respective wheel rotation axes can be or are to be supported, in particular directly, on the commercial vehicle frame. This means that, in particular in the finished state of the commercial vehicle, the wheels are held or supported on the frame via the axle.

[0008] The corresponding wheel can be, in particular, a corresponding ground contact element of the commercial vehicle. A first wheel can be rotated relative to the vehicle frame about a wheel rotation axis of the first wheel, which is in particular referred to as the first wheel rotation axis. A second wheel can be rotated about a wheel rotation axis of the second wheel, which is in particular referred to as the second wheel rotation axis. The commercial vehicle can be driven on a road by rotating the corresponding wheels. For example, the direction of the corresponding wheel rotation axis is, in particular, at least substantially parallel to the vehicle transverse direction of the commercial vehicle.

[0009] The chassis may include the corresponding wheel. This means that the corresponding wheel may be part of the chassis. Alternatively, the corresponding wheel may not be part of the chassis. This means that the chassis does not contain the corresponding wheel, or the corresponding wheel is constructed separately from the chassis.

[0010] The commercial vehicle comprises a frame and a chassis in its manufactured state, and in particular the wheels. For example, the commercial vehicle is designed as an electric commercial vehicle. The frame can in particular refer to the underframe of the commercial vehicle.

[0011] For example, the axle is designed as a rear axle of a commercial vehicle. This means that the axle can be arranged in the driving direction of the commercial vehicle or in the longitudinal direction of the commercial vehicle or can be arranged in a rear partial area of ​​the commercial vehicle, in particular in the rear area. For example, the axle is designed as a wheel suspension structure for the wheels, or the axle includes the wheel suspension structure.

[0012] In order to improve the maneuverability of a commercial vehicle in particular, the invention provides for at least one adjusting device, by means of which the axle is mounted so that it can be pivoted relative to the vehicle frame about a pivot axis, which extends obliquely or perpendicularly relative to the respective wheel rotation axis, in order to enable the commercial vehicle to turn or change direction. This means that the pivoting of the axle about the pivot axis can or will be achieved by the adjusting device. In other words, the axle is designed as an axle, such as a rear axle, which can be pivoted relative to the vehicle frame about a pivot axis.

[0013] "The axle is pivotable, in particular mounted so as to pivot, for turning and / or changing direction of the commercial vehicle" may in particular mean that the commercial vehicle can or will turn or change direction due to the pivoting of the axle about a pivot axis. The commercial vehicle can thus be steered by pivoting the axle. The axle may therefore in particular be referred to as a steerable axle or a steerable axle. For example, the pivot axis runs in particular at least substantially parallel to the vehicle vertical direction of the commercial vehicle.

[0014] Axle swivel does not mean, in particular, a rotation of the respective wheel only about a wheel rotation axis of the respective wheel, which is different from the swivel axis, for example, spaced apart from the swivel axis. Instead, in particular, the entire axle is swiveled or turned, in particular about the swivel axis. This therefore does not in particular involve only the wheel steering angle of the respective wheel. The chassis can therefore in particular be referred to as an adjustable chassis.

[0015] For example, the axle can be swung about the swivel axis relative to the frame between at least two positions. Therefore, the axle can be swung from a first position to a second position, and vice versa.

[0016] For example, in a first position, the longitudinal axis of the axle extends at a first angle relative to the vehicle transverse axis of the commercial vehicle, and in a second position, the longitudinal axis of the axle extends at a second angle relative to the vehicle transverse axis that is different from the first angle. This means that in the first position, the axle is at a first angle, for example, relative to the vehicle transverse axis, and in the second position, at a second angle, for example, relative to the vehicle transverse axis. For example, the longitudinal axis of the axle and the vehicle transverse axis are parallel to each other in the first position. This allows, for example, straight-line driving of the commercial vehicle in the first position. For example, the axle and the vehicle transverse axis are tilted relative to each other in the second position. This allows, for example, at least partial turning or a change of direction of the commercial vehicle.

[0017] Furthermore, at least one lever is provided, which can be pivoted relative to the frame about a lever axis extending obliquely or perpendicularly to the pivot axis.

[0018] The adjusting member capable of translational movement relative to the frame via the rod adjusting device is coupled to the axle or can be connected in such a way that the translational movement of the adjusting member can cause the axle to swing about a swing axis, especially at least indirectly, through the swinging of the rod. In other words, the translational movement of the adjusting member can be converted or transformed into a swinging movement of the rod about the rod axis, wherein the swinging movement of the rod can cause the axle to swing about the swing axis, especially at least indirectly, relative to the frame. Therefore, the swinging of the axle can be realized, especially at least indirectly, by means of the adjusting member through the rod. In other words, the translational movement of the adjusting member causes the rod to swing about the rod axis, wherein the swinging of the rod about the rod axis causes the axle to swing about the swing axis. As a result, the axle can be swung particularly easily and / or particularly reliably. In addition, the structural space of the chassis can be designed to be particularly advantageous, especially kept small.

[0019] Alternatively or additionally, it is provided that the at least two wheels can be driven by means of a power device of a commercial vehicle. In other words, the axle is designed as a drive axle. The power device is provided for driving a commercial vehicle. In other words, a torque can be provided by means of the power device to drive a wheel particularly arranged on the drive axle. This means that the torque provided by the power device can be transmitted to a wheel particularly arranged on the axle in order to drive the commercial vehicle. It is also provided that the power device can be swung relative to the frame around a swing axis by means of an adjusting device, particularly when the axle swings around a swing axis. In other words, the axle can be connected or has been connected to the power device in such a way that when the axle swings around the swing axis, the power device is allowed to swing around the swing axis, particularly by swinging the axle around the swing axis. This means that the swing of the power device around the swing axis can be achieved by means of an adjusting device, particularly by means of the axle. In other words, the power device is installed by means of the adjusting device in a manner that it can swing relative to the frame around the swing axis. Thus, for example, the torque provided by the power device can be transmitted to the wheel particularly easily. Here, for example, a small amount of chassis manufacturing work can be maintained, thereby, for example, a very low chassis manufacturing cost can be maintained. “The power unit can be pivoted relative to the frame about a pivot axis by means of an adjusting device when the axle is pivoted” can particularly mean that the power unit can be pivoted relative to the frame about a pivot axis during a rotation of the axle by means of an adjusting device. This means that the power unit can pivot with the axle.

[0020] Alternatively or additionally, at least one component designed as a gas spring and / or fluid damper is provided, via which the axle can be supported or is supported on the frame, preferably in a sprung and / or damped manner, in particular directly, for example in the vehicle vertical direction of the commercial vehicle. In other words, the axle is connected or can be connected to the frame in a sprung (suspended) and / or damped manner via the component. This can increase the comfort of the commercial vehicle in particular. The gas spring is designed, for example, as a pleated spring. The gas spring or pleated spring is designed, for example, as an air spring. It is also provided that the component, in particular the gas spring, has at least one working chamber designed to accommodate a fluid and at least one piston member partially delimiting the working chamber. In other words, the fluid is located in the working chamber, wherein the fluid can be acted upon, in particular mechanically, by the piston member. For example, the component has at least one wall, in particular different from the piston member, for example, formed separately from the piston member, which wall in particular directly delimits the working chamber in part. The piston member is, for example, accommodated in the working chamber in a manner that can be moved, in particular translationally, relative to the wall. For example, the wall is designed as a convoluted structure. For example, the piston member is designed as a scroll piston. The fluid is, for example, air.

[0021] The piston member is connected or connectable to the axle in such a way that, by means of a translational movement of the axle relative to the frame in a direction of movement, the piston member can be translated relative to the frame, in particular relative to the wall, in said direction of movement, thereby enabling the volume of the working chamber to be changed. In other words, the translational movement of the axle relative to the frame in said direction of movement causes a translational movement of the piston member relative to the frame, in particular relative to the wall, in said direction of movement. By means of the translational movement of the piston member in the direction of movement, the piston exerts an in particular mechanical action on the fluid located in the working chamber. Thus, the volume or fluid can be compressed and / or expanded by means of the piston. Preferably, the direction of movement extends in particular at least substantially in the vehicle vertical direction of the commercial vehicle. For example, the swing axis and the direction of movement are parallel to each other. Alternatively, the direction of movement and the swing axis can be inclined relative to each other.

[0022] In addition, it is provided that by pivoting the axle about the pivot axis, the piston part can be moved relative to the frame, in particular relative to a wall, in a second direction of movement that is different from the first direction of movement. In other words, the pivoting of the axle about the pivot axis causes the piston part to move relative to the frame, in particular relative to the wall, in the second direction of movement. This means that the pivoting of the axle about the pivot axis can cause the piston part to move in the second direction of movement. As a result, the piston can be moved in the second direction of movement to compensate for the pivoting of the axle. As a result, the pivoting of the axle about the pivot axis and the springing and / or vibration damping of the axle can be realized particularly easily.

[0023] The present invention is based in particular on the following recognition and consideration: For example, in particular when a conventional commercial vehicle with a conventional chassis is a vehicle with a saddle semitrailer, its maneuverability may be particularly limited. This is the case in particular when the commercial vehicle has a large axle distance. Usually, commercial vehicles make requirements on maneuverability, for example for type approval. Here, for example, according to EU Regulation No. 1230 / 2012, a commercial vehicle must be able to complete a complete circular motion of 360 degrees in two directions in an annular area between two concentric circles, and the outer boundary of the commercial vehicle must not exceed the outer circumference or protrude into the inner circle. For this, the outer circle radius is 12.5 meters and the inner circle diameter is 5.3 meters. This can be particularly referred to as a BOK test or a BOK circle.

[0024] In contrast, the chassis of the present invention can be used to increase or improve the maneuverability of commercial vehicles in particular. In addition to the conventional steering of the front axle wheels of a conventional commercial vehicle, the axle, for example, which is designed as a rear axle, can also be swung about a swivel axis, thereby producing an additional steering effect for the commercial vehicle. As a result, the driving flexibility of the commercial vehicle can be significantly increased or improved, especially in the case of a large wheelbase (for example, more than 4000 mm). As a result, for example, the BOK circular driving regulations can be met particularly reliably, especially for commercial vehicles with a saddle semitrailer, for example, in the case of a large wheelbase or a wheelbase of more than 4000 mm. The chassis of the present invention can thus achieve high maneuverability of commercial vehicles. In addition, high maneuverability can especially increase the comfort of the commercial vehicle, especially for the driver. Comfort can especially refer to driving comfort.

[0025] In another embodiment, the adjusting device is designed as a hydraulic adjusting device. In other words, the axle can be hydraulically pivoted about the pivot axis relative to the frame by means of the adjusting device. This means that the pivoting of the axle can be realized at least partially, in particular completely, hydraulically by means of the adjusting device. The adjusting device can therefore be referred to in particular as a hydraulic unit.

[0026] For example, the rod axis extends in particular at least substantially in the vehicle transverse direction. For example, the adjusting element can be moved in particular hydraulically in or along an adjustment direction, which, for example, in particular extends at least substantially in the vehicle longitudinal direction. The rod can in particular be referred to as a control rod or guide rod.

[0027] In another embodiment, at least one control arm is provided which is translationally movable relative to the frame, by means of which the rod is connected or connectable, in particular directly, to the axle in such a way that a pivoting movement of the rod can, via a translational movement of the control arm, in particular directly pivot the axle. In other words, a pivoting movement of the rod about the rod axis can be converted or transformed into a translational movement of the control arm, wherein the translational movement of the control arm can pivot the axle about the pivot axis relative to the frame. This means that the axle can be pivoted about the pivot axis relative to the frame by means of an adjusting device and in particular by means of an adjusting part, a rod and a control arm. In other words, the pivoting movement of the rod about the rod axis causes a translational movement of the control arm, wherein the translational movement of the control arm causes a pivoting movement of the axle about the pivot axis. As a result, the axle can be pivoted in a particularly simple and / or particularly reliable manner. In addition, the structural space of the chassis can be designed to be very advantageous, in particular to be kept small.

[0028] For example, the control arm can be moved by pivoting the lever about the lever axis in a direction, in particular a control arm direction, which runs, for example, parallel to the adjustment direction of the adjusting element. For example, the control arm direction runs, in particular, at least substantially parallel to the vehicle longitudinal direction of the commercial vehicle.

[0029] The power unit is preferably designed as an electric power unit. This means that the power unit has at least one electric motor, by means of which the commercial vehicle, in particular the individual wheels, can be driven. In other words, the axle can be designed as an electric axle. This means that the commercial vehicle can be designed as an electric commercial vehicle. For example, the commercial vehicle is designed as a battery-electric commercial vehicle or a hybrid vehicle. Alternatively, the commercial vehicle can be designed, for example, as a fuel cell vehicle.

[0030] The power unit may be designed to be separate from the chassis. This means that the chassis does not contain the power unit. Alternatively, the chassis may contain the power unit. This means that the power unit may be part of the chassis.

[0031] In another embodiment, it is provided that the pivot axis extends through the axle. In other words, the pivot axis intersects the axle. This means that the axle can pivot relative to the frame about a pivot center, in particular referred to as the pivot center, in a particularly imaginary plane extending perpendicularly to the pivot axis, wherein the pivot center is located on the axle or arranged within the axle. The pivot center is therefore not spaced apart from the axle. This allows the kinematics of the pivoting of the axle to be designed particularly advantageously, in particular particularly easily. In particular, the movements of at least one component of the axle caused by the pivoting can be kept very small. The pivot center can in particular be understood as the instantaneous center.

[0032] In another embodiment, the axle is designed as a rigid axle. In other words, the wheels arranged on opposite sides of the commercial vehicle in the transverse direction are connected to each other via at least one rigid axle body. This means that the axle is not designed as an independent wheel suspension, or does not contain an independent wheel suspension. This can increase the rigidity of the chassis in particular. In addition, the chassis can be designed in a particularly simple and cost-effective manner.

[0033] For example, the axle can be moved in or along the direction of movement between at least two positions. For example, the piston element can be moved in or along the direction of movement between at least two piston positions relative to the frame, in particular relative to the wall. For example, the axle and the piston element are connected to each other, in particular mechanically, in such a way that when the axle is in the first position, the piston element is in the first piston position, and when the axle is in the second position, the piston element is in the second piston position. This means that by moving the axle from the first position to the second position, the piston element can be moved from the first piston position to the second piston position and vice versa.

[0034] The movement of the piston part in the second direction of movement can be a translational movement. This means that the piston part can be moved translationally relative to the vehicle frame, in particular relative to a wall, in the second direction of movement. In particular, the piston part can be moved along a circular path or a circular path arc segment extending in particular around the pivot axis due to the pivoting of the axle. For example, the second direction of movement runs obliquely or perpendicularly to the direction of movement, in particular referred to as the first direction of movement. For example, the second direction of movement runs in the vehicle longitudinal direction and / or the vehicle transverse direction of the commercial vehicle.

[0035] For example, it is provided that when the piston element moves in the second direction of movement, the volume of the working chamber does not change, in particular at least substantially. This means that the piston element is movable in the second direction of movement or relative to the frame, in particular relative to the wall, but the volume of the working chamber does not change, in particular due to the movement of the piston in the second direction of movement, or the volume change "when the piston element moves in the second direction of movement, in particular over a distance" is smaller than the volume change "when the piston element moves in the first direction of movement, in particular over the distance". The volume of the working chamber can therefore remain at least substantially constant when the piston moves in the second direction of movement.

[0036] Another aspect of the invention relates to a commercial vehicle having a chassis according to the invention. The advantages and advantageous configurations of this aspect should be regarded as advantages and advantageous configurations of the invention, and vice versa.

[0037] Further advantages, features and details of the invention are apparent from the following description of preferred embodiments and in conjunction with the drawings. The features and feature combinations mentioned above in the description and the features and feature combinations mentioned below in the description of the drawings and / or shown individually in the drawings can be used not only in the respectively indicated combination but also in other combinations or alone without exceeding the scope of the invention, wherein:

[0038] Figure 1 A partial top view schematically shows a commercial vehicle having a chassis of the present invention;

[0039] Figure 2 A partial perspective schematic diagram of a commercial vehicle having a chassis of the present invention is shown;

[0040] Figure 3 A partial bottom view of a commercial vehicle is shown, wherein the chassis of the commercial vehicle according to the present invention is in a first position;

[0041] Figure 4 A partial bottom view of a commercial vehicle is shown, wherein the chassis of the commercial vehicle according to the present invention is in a second position;

[0042] Figure 5 A schematic partial top view of a commercial vehicle is shown, which has a chassis according to the invention according to another embodiment;

[0043] Figure 6 A schematic diagram shows a partial cross section of a component of a chassis according to the invention which is designed as a gas spring.

[0044] In the figures, identical or functionally identical components are provided with the same reference symbols.

[0045] Figure 1 A commercial vehicle 10 with a chassis 12 is shown in a schematic partial perspective top view. Figure 1 The chassis 12 or the commercial vehicle 10 is shown in a schematic top view. Figure 2 A utility vehicle 10 or a chassis 12 is shown in a schematic perspective view of a section.

[0046] The chassis 12 has an axle 14, which in this embodiment is designed as a rear axle of the commercial vehicle 10. For example, the axle 14 is designed as a rigid axle 15. Via the axle 14, at least two, for example four, wheels 20, 22, 24, 26 of the commercial vehicle 10, which can rotate about respective wheel rotation axes 16, 18, can be supported or are supported on a frame 28 of the commercial vehicle 10. A first wheel 20 of the commercial vehicle 10 is arranged on a first side 32 of the commercial vehicle 10 with respect to a vehicle transverse direction 30 of the commercial vehicle 10, and a second wheel 22 of the commercial vehicle 10 is arranged on a second side 34 different from the first side 32 with respect to the vehicle transverse direction 30. In this embodiment, a third wheel 24 of the commercial vehicle 10 is arranged on the first side 32, and a fourth wheel 26 of the commercial vehicle 10 is arranged on the second side 34. The first and second wheels 20, 22 or the third and fourth wheels 24, 26 are spaced apart from one another in the vehicle transverse direction 30. For example, the first and third wheels 20, 24 can rotate about a first wheel rotation axis 16 of the commercial vehicle 10. For example, the second and fourth wheels 22, 26 can rotate about a second wheel rotation axis 18 of the commercial vehicle 10. The wheel axes of rotation 16 , 18 preferably extend at least substantially parallel to one another.

[0047] In order to improve the maneuverability of the commercial vehicle 10 in particular, it is provided that the chassis 12 has at least one adjusting device 36, 38, by means of which the axle 14 is mounted so as to be pivotable relative to the frame 28 about a pivot axis 40 extending obliquely or perpendicularly to the respective wheel rotation axis 16, 18, in order to enable the commercial vehicle 10 to turn or change direction. In this embodiment, two articulation devices 36, 38 are provided, by means of which the axle 14 can be pivoted relative to the frame 28 about the pivot axis 40. In this embodiment, the first adjusting device 36 is arranged on the first side 32, and the second adjusting device 38 is arranged on the second side 34.

[0048] Each wheel 20, 22, 24, 26 is mounted on the axle 14 or is mechanically connected to the axle 14 in such a way that the wheels 20, 22, 24, 26 can swivel with the axle 14 when the axle 14 swivels about the swivel axis 40. This allows each wheel 20, 22, 24, 26 to swivel or deflect relative to the longitudinal axis 42 of the commercial vehicle 10, especially driven by the swivel of the axle 14, thereby enabling the commercial vehicle 10 to turn or change direction. The driving direction of the commercial vehicle 10 is Figure 1 This is indicated by means of arrow 43 .

[0049] Figure 3 and Figure 4 1 and 1 are schematic diagrams of respective parts of the commercial vehicle 10 viewed from below. Figure 3 and Figure 4 1 and 2 show the chassis 12 and the commercial vehicle 10 in their respective schematic bottom views. By means of the respective adjusting devices 36 , 38 , the axle 14 can be pivoted about the pivot axis 40 relative to the vehicle frame 28 between at least two positions 44 , 46 . Figure 3 The axle 14 is shown in the first position 44 . Figure 4 The axle 14 is shown in the second position 46. In the second position 46, the axle 14, in particular the longitudinal axis 47 of the axle 14, is pivoted or deflected by a certain angle relative to the first position 44, in particular about the pivot axis 40. The angle or the maximum possible value of the angle is, for example, 2.3 degrees. Alternatively, the angle can be less than 2.3 degrees. This means that the axle 14 can be pivoted about the pivot axis 40 by, for example, a maximum of 2.3 degrees by means of the respective adjusting device 36, 38.

[0050] Preferably, each adjusting device 36, 38 is designed as a hydraulic adjusting device 36, 38. This means that each adjusting device 36, 38 has, for example, a respective hydraulic unit, in particular in the form of a cylinder. For example, each adjusting device 36, 38 has, for example, a respective cylinder 48, 50, which is designed to hold a liquid. Each cylinder 48, 50 is, for example, partially delimited by a respective cylinder wall.

[0051] Each adjusting device 36, 38 preferably has a respective adjusting element 52, 54 that can be moved translationally relative to the frame 28. Each adjusting element 52, 54 is designed, for example, as a respective piston, which is accommodated in the respective cylinder 48, 50 so as to be moved translationally, in particular relative to the respective cylinder wall. Each adjusting element 52, 54 preferably partially delimits the respective cylinder 48, 50. The first adjusting element 52 is arranged on the first side 32, and the second adjusting element 54 is arranged on the second side 34.

[0052] For example, at least one, in particular electric, pump element is provided, by means of which liquid can be fed into the respective cylinder 48, 50. For example, at least one storage element, in particular a tank, is provided, in which liquid can be stored. Preferably, the liquid stored in the storage element can be fed out of the storage element by means of a pump element and can be fed into the respective cylinder 48, 50. For example, the length of the storage element is 300 mm. The width of the storage element is, for example, 200 mm. The height of the storage element is, for example, 200 mm. Preferably, at least one electronic computing device is provided for controlling or monitoring the respective adjusting devices 36, 38. For example, the respective adjusting devices 36, 38 each include a sensor element, in particular a position sensor, by means of which the respective position of the respective adjusting element 52, 54 can be measured or determined.

[0053] In another embodiment, it is provided that the chassis 12 has at least one rod 56. In the exemplary embodiment, two rods 56, 58 are provided. A first rod 56 is arranged on the first side 32, and a second rod 58 is arranged on the second side 34. The respective rods 56, 58 can be pivoted relative to the frame 28 about a respective rod axis 60, 62 of the respective rod 56, 58, wherein the respective rod axis 60, 62 runs obliquely or perpendicularly to the pivot axis 40. For example, a respective support is provided for each rod 56, 58, which is arranged on the respective side 32, 34, for example on a respective front suspension device.

[0054] It is preferably provided that the respective adjusting elements 52, 54 are connected or connectable to the axle 14 via respective rods 58, 60, in particular mechanically, in such a way that a translational movement of the respective adjusting element 52, 54 can cause a swiveling of the axle 14 via a swiveling of the respective rod 56, 58. Here, a first rod 56 is connected to the first adjusting element 52. A second rod 58 is connected to the second adjusting element 54. The first rod 56 can swivel about a first rod axis 60. The second rod 58 can swivel about a second rod axis 62.

[0055] Preferably, the chassis 12 comprises at least one control arm 64, 66 which is movable in translation relative to the frame 28. In the exemplary embodiment, two control arms 64, 66 are provided. A first control arm 64 is arranged on the first side 32 and a second control arm 66 is arranged on the second side 34. Each control arm 64, 66 is movable in translation relative to the frame 28. Each lever 56, 58 is connected or connectable to the axle 14 in particular mechanically via the respective control arm 64, 66, in such a way that a pivoting movement of the respective lever 56, 58 can cause a pivoting movement of the axle 14 via the translational movement of the respective control arm 64, 66. In this case, the first control arm 64 is in particular mechanically connected to the first lever 56. The second control arm 66 is in particular mechanically connected to the second lever 58.

[0056] By means of the respective rods 56, 58, a respective transmission can be made between the respective translational movement of the respective adjusting parts 52, 54 and the respective control arms 64, 66. In this case, the transmission ratio between the respective movement of the respective adjusting parts 52, 54 and the respective movement of the respective control arms 64, 66 can be 2.6, for example. This allows the respective adjusting devices 36, 38, in particular the respective cylinders 48, 50, to be designed very compactly, wherein in particular at the same time large adjusting forces can be transmitted to the axle 14 in order to pivot the axle 14.

[0057] Preferably, the control arms 64, 66 are connected to one another, in particular directly, via the control arm part 68. Thus, the control arms 64, 66 and the control arm part 68 can together form a stabilizer, in particular a stabilizer, of the chassis 12 or the commercial vehicle 10. The control arms 64, 66 preferably extend, in particular at least substantially, in the longitudinal direction of the commercial vehicle 10. The control arms 66, 64 and the control arm part 68 can each be designed separately from one another or integrally with one another.

[0058] It is preferably provided that the adjusting members 52, 54 of the respective adjusting devices 36, 38 move relative to each other in opposite directions (i.e. in opposite directions). For example, the adjusting devices 36, 38, in particular the adjusting members 52, 54 are connected to each other in particular mechanically, for example via the axle 14, such that when the first adjusting member 52 is translated or when the first adjusting member 52 is translated in a first adjustment direction, a translational movement of the second adjusting member 54 in a second adjustment direction opposite to the first adjustment direction is initiated. In particular, when the first lever 56 is pivoted in a first pivoting direction, a pivotal movement of the second lever 58 in a second pivoting direction opposite to the first pivoting direction is initiated. In particular, when the first control arm 64 is translated in a first direction, a translational movement of the second control arm 66 in a second direction opposite to the first direction is initiated. As a result, the first wheel 20 and the third wheel 24 can move forward in the longitudinal direction of the vehicle of the commercial vehicle 10, while the second wheel 22 and the fourth wheel 26 can move backward in the longitudinal direction of the vehicle of the commercial vehicle 10, and vice versa.

[0059] In other embodiments, the commercial vehicle 10 has at least one drive unit 70, by means of which the commercial vehicle 10 can be driven. Preferably, the drive unit 70 is designed as an electric drive unit 70. For example, the drive unit 70 has two electric machines, by means of which the commercial vehicle 10 can be driven. Preferably, it is provided that the wheels 20, 22, 24, 26 can be driven by means of the drive unit 70. Here, for example, it is provided that the electric machines drive a common output shaft, which is connected or can be connected to the wheels 20, 22, 24, 26 in a torque-transmitting manner. The drive unit 70 can therefore be referred to in particular as a twin motor.

[0060] It is preferably provided that the drive unit 70 can be pivoted about the pivot axis 40 relative to the frame 28 by means of corresponding adjustment devices 36, 38, in particular when the axle 14 pivots about the pivot axis 40. For example, the drive unit 70 comprises a cooling device 72 which can be designed as a cooling module, for example.

[0061] Preferably, it is provided that the pivot axis 40 extends through the axle 14, in particular the longitudinal axis 47 of the axle 14. This means that the pivot axis 40 intersects the axle 14, in particular the longitudinal axis 47. For example, two triangular control arms 74 are provided, which are preferably connected to one another at a common intersection. The pivot axis 40 preferably extends through the intersection. This makes it possible to minimize transverse movements, in particular when the axle 14 is pivoted.

[0062] Figure 5 A schematic top view of a commercial vehicle 10 or chassis 12 according to a further embodiment is shown, in which the pivot axis 40 is located outside the axle 14 .

[0063] In another embodiment, the chassis 12 comprises at least one component 84, 86, 88, 90 designed as a gas spring 76, 78, 80, 82, wherein in this exemplary embodiment, four of the gas springs 76, 78, 80, 82 or components 84, 86, 88, 90 are provided. By means of the components 84, 86, 88, 90, the axle 14 is supported upwardly or can be supported on the frame 28, for example, in the vehicle vertical direction of the commercial vehicle by means of springs.

[0064] Figure 6 The partially sectional schematic diagram shows by way of example components 84, 86, 88, 90, which are respectively designed as gas springs 76, 78, 80, 82. The gas springs 76, 78, 80, 82 are designed, for example, as corresponding air springs and / or corresponding bellows springs.

[0065] In another design, each component 84, 86, 88, 90 or each gas spring 76, 78, 80, 82 has a corresponding working chamber 92 designed to contain a fluid and a piston member 94 that partially defines the working chamber 92, that is, defines the corresponding working chamber 92. Each working chamber 92 is partially defined by a corresponding wall 96 that is especially different from the piston member 94. Each wall 96 is designed as a corresponding folded structure, for example. For example, each piston member 94 is designed as a corresponding scroll piston. Figure 6 In the illustrated embodiment, each working chamber 92 is partially delimited upwards, in particular in the vehicle vertical direction of the commercial vehicle 10, by a corresponding cover 98. Preferably, each piston element 94 partially delimits the corresponding working chamber 92 downwards in the vehicle vertical direction of the commercial vehicle 10. For example, each component 84, 86, 88, 90 or gas spring 76, 78, 80, 92 has a bionic design.

[0066] Preferably, the piston elements 94 are connected to the axle 14, in particular mechanically, in such a way that the piston elements 94 can be moved or moved in translation relative to the frame 28 in the respective movement direction 100 by a translational movement of the axle 14 relative to the frame 28 in the respective movement direction 100, whereby the respective volume 102 of the working chamber 92 is changed or can be changed. The movement direction 100 runs, for example, parallel to the vehicle vertical direction of the commercial vehicle 10 and / or parallel to the pivot axis 40.

[0067] Preferably, the piston elements 94 are connected, in particular mechanically, to the axle 14 in such a way that, by pivoting the axle 14 about the pivot axis 40, the respective piston element 94 is moved or movable relative to the vehicle frame 28 in a second direction of movement 104 that is different from the direction of movement 100. The respective movement of the piston elements 94 in the second direction of movement 104 is preferably a respective translational movement, which, for example, has at least one lateral component, that is, extending in the vehicle transverse direction 30, whereby the movement can be particularly referred to as a lateral movement. By the movement of the piston elements 94 in the second direction of movement 104, an additional force, in particular referred to as an air force, can be generated, in particular relative to the cover 98, which can be up to 2.2 kN per gas spring 76, 78, 80, 82, for example. In this way, the respective movement of the respective piston element 94 caused by the pivoting of the axle 14 can be compensated. In particular, when the pivot axis 40 extends through the axle 14, the movement of the piston elements 94 in the second direction of movement 104 can be kept small when the axle 14 is pivoted.

[0068] In the embodiment, the first component 84 is arranged on the first side 32, and the second component 86 is arranged on the second side 34. The third component 88 is arranged on the first side 32, and the fourth component 90 is arranged on the second side 34. For example, the first component 84 is arranged behind the third component 88 in the vehicle longitudinal direction of the commercial vehicle 10. For example, the second component 86 is arranged behind the fourth component 90 in the vehicle longitudinal direction of the commercial vehicle 10. The diameter of the first component 84 is preferably greater than the diameter of the third component 88, and / or the diameter of the second component 86 is preferably greater than the diameter of the fourth component 90. For example, the diameter of the first component 84 and / or the second component 86 is 305 mm. For example, the diameter of the third component 88 and / or the diameter of the fourth component 90 is 195 mm. For example, the axial center of the first component and / or the second component 84, 86, in particular the first component and / or the second component 84, 86, is arranged more inward in the vehicle transverse direction 30 than the axial center of the third component and / or the fourth component 88, 90, in particular the third component and / or the fourth component 88, 90. In this way, a corresponding distance between the individual components 84 , 86 and the respective wheel 20 , 22 , 24 , 26 can be ensured, in particular when the axle 14 is pivoted.

[0069] Reference numerals list

[0070] 10 Commercial Vehicles

[0071] 12 Chassis

[0072] 14 Axles

[0073] 15 Rigid Bridge

[0074] 16 First wheel rotation axis

[0075] 18 Second wheel rotation axis

[0076] 20 First Wheel

[0077] 22 Second Wheel

[0078] 24 The Third Wheel

[0079] 26 The Fourth Wheel

[0080] 28 Frame

[0081] 30 Vehicle lateral direction

[0082] 32 First side

[0083] 34 Second side

[0084] 36 First adjustment device

[0085] 38 Second adjustment device

[0086] 40 Swing axis

[0087] 42 Longitudinal axis of vehicle

[0088] 43 Arrow

[0089] 44 First Position

[0090] 46 Second position

[0091] 47 Vertical axis

[0092] 48 cylinders

[0093] 50 cylinders

[0094] 52 First adjustment member

[0095] 54 Second adjustment member

[0096] 56 First Shot

[0097] 58 Second shot

[0098] 60 First rod axis

[0099] 62 Second rod axis

[0100] 64 First control arm

[0101] 66 Second control arm

[0102] 68 Control arm parts

[0103] 70 Power Equipment

[0104] 72 Cooling device

[0105] 74 Triangular control arm

[0106] 76 Gas Spring

[0107] 78 Gas spring

[0108] 80 Gas Spring

[0109] 82 Gas Spring

[0110] 84 First Component

[0111] 86 Second component

[0112] 88 Third Component

[0113] 90 Fourth Component

[0114] 92 working chamber

[0115] 94 Piston parts

[0116] 96 wall

[0117] 98 Top cover

[0118] 100 Movement direction

[0119] 102 Volume

[0120] 104 Second direction of movement

Claims

1. A chassis (12) for a commercial vehicle (10), the chassis having an axle (14), by means of which at least two wheels (20, 22) of the commercial vehicle (10) which can rotate about respective wheel rotation axes (16, 18) can be supported on a frame (28) of the commercial vehicle (10), wherein: At least one adjusting device (36) is provided, by means of which the axle (14) is mounted so as to be able to pivot relative to the frame (28) about a pivot axis (40) in order to enable the commercial vehicle (10) to turn or change direction, the pivot axis extending obliquely or perpendicularly relative to the respective wheel rotation axis (16, 18), Its characteristics are: at least one rod (56) is provided, the rod being able to swivel relative to the frame (28) about a rod axis (60) extending obliquely or perpendicularly relative to the swivel axis (40), and via which an adjusting member (52) of the adjusting device (36) which is able to move translationally relative to the frame (28) is connected to the axle (14) in such a way that the translational movement of the adjusting member (52) can cause the axle (14) to swivel by swivel of the rod (56), and / or The at least two wheels (20, 22) can be driven by means of a drive unit (70) of the commercial vehicle (10), the drive unit (70) being swivellable relative to the vehicle frame (28) about the swivel axis (40) by means of the adjusting device (36), and / or at least one component (84) designed as a gas spring (76) is provided, via which the axle (14) can be supported on the frame (28), wherein the component (84) has a working chamber (92) designed to accommodate a fluid and a piston element (94) partially delimiting the working chamber (92), the piston element being connected to the axle (14) in such a way that: ° by means of a translational movement of the axle (14) relative to the frame (28) in a direction of movement (100), The piston element (94) can be moved translationally relative to the frame (28) in the movement direction (100), thereby changing the volume (102) of the working chamber (92). ° By pivoting the axle (14) about the pivot axis (40), the piston element (94) can be moved relative to the frame (28) in a second movement direction (104) that is different from the movement direction (100).

2. The chassis (12) according to claim 1, characterized in that: The adjusting device (36) is designed as a hydraulic adjusting device (36).

3. The chassis (12) according to one of the preceding claims, characterized in that A control arm (64) capable of translational movement relative to the vehicle frame (28) is provided, and the rod (56) is connected to the axle (14) via the control arm so that the swing of the rod (56) can induce the swing of the axle (14) via the translational movement of the control arm (64).

4. The chassis (12) according to one of the preceding claims, characterized in that The pivot axis (40) extends through the axle (14).

5. Chassis (12) according to one of the preceding claims, characterized in that The axle (14) is designed as a rigid axle (15).

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