Chassis for a utility vehicle

Abstract

The invention relates to a chassis (12) for a utility vehicle (10), having a vehicle axle (14) via which at least two vehicle wheels (20, 22) of the utility vehicle (10), which wheels can be rotated about a respective wheel rotational axis (16, 18), can be supported on a vehicle frame (28) of the utility vehicle (10), wherein at least one adjustment device (36) is provided, by means of which the vehicle axle (14) is mounted to pivot relative to the vehicle frame (28) about a pivot axis (40) extending at an angle or perpendicular to the respective wheel rotational axis (16, 18) to effect cornering manoeuvrers or changes in direction of the utility vehicle (10).

Description

[0001] Chassis for a commercial vehicle

[0002] The invention relates to a chassis for a commercial vehicle according to the preamble of patent claim 1.

[0003] DE 102018 122 991 A1 discloses a steerable axle for a vehicle, with a steering linkage for transmitting a steering movement to the vehicle wheels of the axle and with a braking device, wherein the steering linkage is subjected to a braking force in a braking state of the braking device.

[0004] Furthermore, DE 197 02 457 A1 discloses a commercial vehicle with a vehicle frame, a front axle steered by means of a kingpin steering, and a steered rear axle. Furthermore, AT 28 158 E discloses an articulated vehicle. Furthermore, AT 371 408 B discloses a self-aligning axle for a vehicle.

[0005] The object of the invention is to provide a chassis for a commercial vehicle so that the maneuverability of the commercial vehicle can be particularly improved.

[0006] This object is achieved according to the invention by a chassis for a commercial vehicle having the features of patent claim 1. Advantageous embodiments with expedient further developments of the invention are specified in the remaining claims.

[0007] The invention relates to a chassis for a commercial vehicle. For example, the commercial vehicle is designed as a truck, in particular as a tractor unit. For example, the commercial vehicle is designed as a semi-trailer combination that includes the tractor unit. The semi-trailer combination can, in particular, include a semi-trailer. Thus, a semi-trailer combination can be understood, for example, as a combination consisting of the tractor unit and the semi-trailer. Alternatively, the commercial vehicle can be designed, for example, as a bus or a passenger bus. For example, the commercial vehicle is designed as a heavy-duty commercial vehicle.

[0008] The chassis has at least one vehicle axle, via which at least two vehicle wheels of the commercial vehicle, each rotatable about a respective wheel rotation axis, can be supported or supported on a vehicle frame of the commercial vehicle, in particular directly. This means that, particularly in the fully manufactured state of the commercial vehicle, the vehicle wheels are held or supported on the vehicle frame via the vehicle axle.

[0009] The respective vehicle wheel can be understood, in particular, as a respective ground contact element of the commercial vehicle. A first of the vehicle wheels is rotatable relative to the vehicle frame about a wheel rotation axis of the first vehicle wheel, referred to in particular as the first wheel rotation axis. The second of the vehicle wheels is rotatable relative to the vehicle frame about a wheel rotation axis of the second vehicle wheel, referred to in particular as the second wheel rotation axis. By rotating the respective vehicle wheel, travel of the commercial vehicle on a roadway can be effected. For example, the respective wheel rotation axis runs, in particular at least substantially, parallel to the transverse direction of the commercial vehicle.

[0010] The chassis may include the respective vehicle wheel. This means that the respective vehicle wheel may be part of the chassis. Alternatively, the respective vehicle wheel may not be part of the chassis. This means that the chassis does not include the respective vehicle wheel, or that the respective vehicle wheel is formed separately from the chassis.

[0011] In its fully manufactured state, the commercial vehicle comprises the vehicle frame and the chassis, and in particular the vehicle wheels. For example, the commercial vehicle is designed as an electrically powered commercial vehicle. The vehicle frame can be understood, in particular, as a chassis of the commercial vehicle.

[0012] For example, the vehicle axle is designed as the rear axle of the commercial vehicle. This means that the vehicle axle can be arranged or can be arranged in a rear portion of the commercial vehicle, in particular a rear portion, in the direction of travel of the commercial vehicle or in the longitudinal direction of the commercial vehicle. For example, the vehicle axle is designed as a wheel suspension for the vehicle wheels or the vehicle axle includes the wheel suspension.

[0013] In order to be able to particularly improve the maneuverability of the commercial vehicle, at least one adjusting device is provided according to the invention, by means of which the vehicle axle is pivotally mounted relative to the vehicle frame about a pivot axis running obliquely or perpendicular to the respective wheel rotation axis in order to effect cornering and / or changes of direction of the commercial vehicle. In other words, the vehicle axle can be pivoted about the pivot axis relative to the vehicle frame by means of the adjusting device in order to effect cornering and / or changes of direction of the commercial vehicle. This means that the pivoting of the vehicle axle about the pivot axis can be or will be effected by the adjusting device. In other words, the vehicle axle is designed as a vehicle axle, for example a rear axle, which can be pivoted about the pivot axis relative to the vehicle frame.

[0014] The fact that the vehicle axle is pivotable, in particular pivotably mounted, to effect cornering and / or changes of direction of the vehicle can be understood in particular to mean that cornering or changes of direction of the commercial vehicle can be carried out or are carried out as a result of the pivoting of the vehicle axle about the pivot axis. The commercial vehicle can thus be steered by pivoting the vehicle axle. Therefore, the vehicle axle can in particular be referred to as a steerable or steered vehicle axle. For example, the pivot axis runs, in particular at least substantially, parallel to the vertical direction of the commercial vehicle.

[0015] The pivoting of the vehicle axle does not, in particular, involve a pivoting of the respective vehicle wheel about a wheel pivot axis of the respective vehicle wheel, in particular a pivot axis that is different from the pivot axis, for example a pivot axis that is spaced apart from the pivot axis. In contrast, in particular the entire vehicle axle is pivoted or steered about the pivot axis. Thus, in particular, it is not a mere wheel turning of the respective vehicle wheel. Therefore, the chassis can be referred to in particular as an adjustable chassis. For example, the vehicle axle can be pivoted about the pivot axis between at least two positions relative to the vehicle frame. The vehicle axle can thus be pivoted from the first position to the second position and vice versa.

[0016] For example, a longitudinal axis of the vehicle axle in the first position runs at a first angle relative to the transverse vehicle axis of the commercial vehicle, and in the second position the longitudinal axis of the vehicle axle runs at a second angle relative to the transverse vehicle axis that is different from the first angle. This means that in the first position the vehicle axle is, for example, at the first angle relative to the transverse vehicle axis, and in the second position it is, for example, at the second angle relative to the transverse vehicle axis. For example, the longitudinal axis of the vehicle axle and the transverse vehicle axis run parallel to one another in the first position. This means that in the first position the commercial vehicle can, for example, travel straight ahead. For example, the longitudinal axis of the vehicle axle and the transverse vehicle axis run at an angle to one another in the second position.This makes it possible, for example, to at least partially control cornering or the change of direction of the commercial vehicle.

[0017] Furthermore, at least one lever is provided which can be pivoted relative to the vehicle frame about a lever axis running obliquely or perpendicularly to the pivot axis, via which lever an adjusting part of the adjusting device which can be moved translationally relative to the vehicle frame is or can be coupled to the vehicle axle in such a way that the pivoting of the vehicle axle about the pivot axis can be effected, in particular at least indirectly, by the translational movement of the adjusting part via the pivoting of the lever. In other words, a translational movement of the adjusting part can be transferred or converted into a pivoting movement of the lever about the lever axis, wherein the pivoting movement of the lever allows the vehicle axle to be pivoted, in particular at least indirectly, about the pivot axis relative to the vehicle frame.Thus, the pivoting of the vehicle axle can be effected, in particular at least indirectly, by means of the adjusting part via the lever. In other words, the translational movement of the adjusting part is accompanied by the pivoting of the lever about the lever axis, whereby the pivoting of the lever about the lever axis is accompanied by the pivoting of the vehicle axle about the pivot axis. This allows the vehicle axle to be pivoted with particularly little effort and / or particularly reliably. Furthermore, the installation space of the chassis can be designed particularly advantageously, in particular, kept particularly small.

[0018] Alternatively or additionally, it is provided that the at least two vehicle wheels can be driven by means of a drive device of the commercial vehicle. In other words, the vehicle axle is designed as a drivable vehicle axle. The drive device is provided for driving the commercial vehicle. In other words, a torque for driving the vehicle wheels, in particular those arranged on the drive axle, can be provided by means of the drive device. This means that the torque provided by the drive device for driving the commercial vehicle can be transmitted to the vehicle wheels, in particular those arranged on the vehicle axle. Furthermore, it is provided that the drive device can be pivoted about the pivot axis relative to the vehicle frame by means of the adjusting device, in particular when pivoting the vehicle axle about the pivot axis.In other words, the vehicle axle is or can be coupled to the drive device in such a way that pivoting the vehicle axle about the pivot axis, in particular pivoting the vehicle axle about the pivot axis, is accompanied by pivoting of the drive device about the pivot axis. This means that pivoting of the drive device about the pivot axis can be effected by means of the adjusting device, in particular via the vehicle axle. In other words, the drive device is mounted so as to be pivotable about the pivot axis relative to the vehicle frame by means of the adjusting device. This allows, for example, the transmission of the torque provided by the drive device to the vehicle wheels to be achieved with particularly little effort.In this way, for example, the manufacturing effort for the chassis can be kept particularly low, which in turn allows the manufacturing costs of the chassis to be kept particularly low. The fact that the drive device can be pivoted relative to the vehicle frame by means of the adjustment device when the vehicle axle pivots about the pivot axis can be understood in particular to mean that the drive device can be pivoted relative to the vehicle frame by means of the adjustment device when the vehicle axle pivots about the pivot axis. This means that the drive device can be pivoted along with the vehicle axle.

[0019] Alternatively or additionally, at least one component designed as a gas spring and / or as a fluid damper is provided, via which the vehicle axle can be supported or is supported on the vehicle frame, preferably in a sprung and / or damped manner, in particular directly, for example in the vertical direction of the commercial vehicle. In other words, the vehicle axle is or can be coupled to the vehicle frame in a sprung and / or damped manner via the component. This can particularly increase the comfort of the commercial vehicle. For example, the gas spring is designed as a bellows spring. For example, the gas spring or the bellows spring is designed as an air spring. Furthermore, it is 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 element 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 element. For example, the component has at least one wall, in particular different from the piston element, for example formed separately from the piston element, which wall partially, in particular directly, delimits the working chamber. The piston element is accommodated, for example, in the working chamber so as to be translationally movable, in particular relative to the wall. For example, the wall is designed as a rolling bellows. For example, the piston element is designed as a rolling piston. For example, the fluid is air.

[0020] The piston element is or can be coupled to the vehicle axle, in particular directly, in such a way that by translationally moving the vehicle axle relative to the vehicle frame in a direction of movement, the piston element can be moved translationally in the direction of movement relative to the vehicle frame, in particular relative to the wall, whereby a volume of the working chamber can be changed. In other words, the translational movement of the vehicle axle relative to the vehicle frame in the direction of movement results in the translational movement of the piston element in the direction of movement relative to the vehicle frame, in particular relative to the wall. By translationally moving the piston element in the direction of movement, the fluid in the working chamber can be acted upon by the piston, in particular mechanically. The volume or the fluid can thus be compressed and / or expanded by means of the piston.The direction of movement preferably runs, in particular at least substantially, in the vertical direction of the commercial vehicle. For example, the pivot axis and the direction of movement run parallel to one another. Alternatively, the direction of movement and the pivot axis can run obliquely to one another. Furthermore, it is provided that by pivoting the vehicle axis about the pivot axis, the piston element can be moved in a second direction of movement relative to the vehicle frame, in particular relative to the wall, which direction is different from the direction of movement. In other words, pivoting the vehicle axis about the pivot axis is accompanied by moving the piston element relative to the vehicle frame, in particular relative to the wall, in the second direction of movement. This means that pivoting the vehicle axis about the pivot axis can cause the piston element to move in the second direction of movement.This allows the piston to be moved in the second direction to compensate for the pivoting of the vehicle axle. This allows both pivoting of the vehicle axle around the pivot axis and springing and / or damping of the vehicle axle to be implemented with minimal effort.

[0021] The invention is based in particular on the following findings and considerations: For example, the maneuverability of a conventional commercial vehicle with a conventional chassis can be particularly limited, especially if it is a vehicle with a semi-trailer. This is particularly the case if the wheelbase of the commercial vehicle is particularly long. Typically, requirements are placed on the maneuverability of the commercial vehicle, for example for type approval. In this case, the commercial vehicle must, for example, according to EU Regulation No. 1230 / 2012, be capable of describing a complete circular movement of 360 degrees in both directions within an annular area between two concentric circles, without the outer boundaries of the commercial vehicle protruding beyond the outer circumference of the circle or into the inner circle.The outer circle has a radius of 12.5 meters, and the inner circle has a diameter of 5.3 meters. This can be referred to as the BOK test or the BOK circle.

[0022] In contrast, the maneuverability of the commercial vehicle can be particularly increased or improved by means of the chassis according to the invention. In addition to the, in particular conventional, steering of vehicle wheels on a front axle of the commercial vehicle, the vehicle axle, designed for example as a rear axle, can be pivoted about the pivot axis, whereby an additional steering effect of the commercial vehicle can be generated. As a result, the steerability of the commercial vehicle can be particularly increased or improved, particularly with a particularly long wheelbase, for example more than 4,000 millimeters. As a result, for example, specifications for driving on the BOK circle, in particular for commercial vehicles with semi-trailers, for example with a particularly long wheelbase or a wheelbase of more than 4,000 millimeters, can be met particularly safely.Thus, the chassis according to the invention can achieve particularly high maneuverability of the commercial vehicle. This particularly high maneuverability can also significantly increase the comfort of the commercial vehicle, especially for the driver. Comfort can be understood, in particular, as ride comfort.

[0023] In a further embodiment, the adjustment device is designed as a hydraulic adjustment device. In other words, the vehicle axle can be hydraulically pivoted about the pivot axis relative to the vehicle frame by means of the adjustment device. This means that the pivoting of the vehicle axle can be effected at least partially, in particular completely, hydraulically by means of the adjustment device. The adjustment device can therefore be referred to in particular as a hydraulic unit.

[0024] For example, the lever axis runs, in particular at least substantially, in the transverse direction of the vehicle. For example, the adjusting part is movable, in particular hydraulically, in an adjustment direction or along an adjustment direction that runs, for example, in particular at least substantially, in the longitudinal direction of the vehicle. The lever can be referred to, in particular, as a control lever or a guide lever.

[0025] In a further embodiment, at least one link is provided which is translationally movable relative to the vehicle frame, via which the lever is or can be coupled to the vehicle axle, in particular directly, in such a way that the pivoting of the vehicle axle can be effected, in particular directly, by pivoting the lever via the translational movement of the link. In other words, the pivoting movement of the lever about the lever axis can be transferred or converted into a translational movement of the link, wherein the vehicle axle can be pivoted about the pivot axis relative to the vehicle frame by means of the translational movement of the link. This means that the vehicle axle can be pivoted about the pivot axis relative to the vehicle frame by means of the adjusting device, in particular via the adjusting part, via the lever and via the link.In other words, pivoting the lever about the lever axis is accompanied by a translational movement of the steering rod, and the translational movement of the steering rod is accompanied by a pivoting of the vehicle axle about the pivot axis. This allows the vehicle axle to be pivoted with particularly little effort and / or with particular reliability. Furthermore, the installation space of the chassis can be designed particularly advantageously, in particular, kept particularly small.

[0026] For example, by pivoting the lever about the lever axis, the handlebar can be moved in a direction referred to as the handlebar direction, which runs, for example, parallel to the adjustment direction of the adjustment part. For example, the handlebar direction runs, in particular at least substantially, parallel to the longitudinal direction of the commercial vehicle.

[0027] The drive device is preferably designed as an electric drive device. This means that the drive device has at least one electric motor by means of which the commercial vehicle, in particular the respective vehicle wheel, can be driven. In other words, the vehicle axle can be designed as an electrically driven vehicle axle. This means that the commercial vehicle can be designed as an electrically driven commercial vehicle. For example, the commercial vehicle is designed as a battery-electric commercial vehicle or as a hybrid vehicle. Alternatively, the commercial vehicle can be designed, for example, as a fuel cell vehicle.

[0028] The drive mechanism can be designed separately from the landing gear. This means that the landing gear does not include the drive mechanism. Alternatively, the landing gear can include the drive mechanism. This means that the drive mechanism can be part of the landing gear.

[0029] In a further embodiment, it is provided that the pivot axis runs through the vehicle axle. In other words, the pivot axis intersects the vehicle axis. This means that in a plane extending perpendicular to the pivot axis, in particular an imaginary plane, the vehicle axle can be pivoted relative to the vehicle frame about a pivot point, in particular referred to as a pivot point, wherein the pivot point is located on the vehicle axle or is arranged within the vehicle axle. The pivot point is therefore not spaced from the vehicle axle. As a result, kinematics for pivoting the vehicle axle can be designed particularly advantageously, in particular with particularly little effort. In particular, movements of at least one component of the vehicle axle caused by the pivoting can be kept particularly small. The pivot point can be understood in particular as an instantaneous center.

[0030] In a further embodiment, the vehicle axle is designed as a rigid axle. In other words, the vehicle wheels, which are preferably arranged on opposite sides in the transverse direction of the commercial vehicle, are connected to one another via at least one rigid axle body. This means that the vehicle axle, for example, is not designed as an independent wheel suspension or includes independent wheel suspension. This can significantly increase the robustness of the chassis. Furthermore, the chassis can be designed with particularly low complexity, in particular, particularly cost-effectively.

[0031] For example, the vehicle axle is movable between at least two positions in the direction of movement or along the direction of movement. For example, the piston element is movable in the direction of movement or along the direction of movement between at least two piston positions relative to the vehicle frame, in particular relative to the wall. For example, the vehicle axle and the piston element are coupled to one another, in particular mechanically, in such a way that the piston element is in the first piston position when the vehicle axle is in the first position and that the piston element is in the second piston position when the vehicle axle is in the second position. This means that the piston element can be moved from the first piston position to the second piston position by moving the vehicle axle from the first position to the second position and vice versa.

[0032] The movement of the piston element in the second direction of movement can be a translational movement. This means that the piston element can be movable translationally relative to the vehicle frame, in particular the wall, in the second direction of movement. In particular, as a result of the pivoting of the vehicle axle, the piston element can move on a circular path, in particular running around the pivot axis, or on an arcuate section of the circular path. For example, the second direction of movement runs obliquely or perpendicular to the direction of movement referred to in particular as the first direction of movement. For example, the second direction of movement runs in the longitudinal direction of the vehicle and / or in the transverse direction of the commercial vehicle.

[0033] For example, it is provided that when the piston element is moved in the second direction of movement, the volume of the working chamber is not changed, in particular at least substantially. This means that the piston element can be moved in the second direction of movement or along the second direction of movement relative to the vehicle frame, in particular relative to the wall, without the volume of the working chamber changing, in particular as a result of the movement of the piston in the second direction of movement, or that the volume changes less when the piston element is moved, in particular over a distance, along the second direction of movement than when the piston element is moved, in particular over the distance, along the first direction of movement. Thus, the volume of the working chamber can remain at least substantially constant when the piston is moved in the second direction of movement.

[0034] A further aspect relates to a commercial vehicle having a chassis according to the invention. Advantages and advantageous embodiments of the further aspect are to be regarded as advantages and advantageous embodiments of the invention, and vice versa.

[0035] Further advantages, features, and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective specified combinations, but also in other combinations or on their own, without departing from the scope of the invention.

[0036] Showing:

[0037] Fig. 1 is a schematic partial view of a commercial vehicle from above, which has a chassis according to the invention; and

[0038] Fig. 2 is a schematic and perspective partial view of a commercial vehicle having a chassis according to the invention; and Fig. 3 is a schematic partial view from below of a commercial vehicle having a chassis according to the invention, which is in a first position; and

[0039] Fig. 4 is a schematic partial view of a commercial vehicle from below, which has a chassis according to the invention, which is in a second position; and

[0040] Fig. 5 is a schematic partial view of a commercial vehicle from above, which has a chassis according to the invention according to a further embodiment; and

[0041] Fig. 6 is a schematic partial sectional view of a component of a chassis according to the invention designed as a gas spring.

[0042] In the figures, identical or functionally identical elements are provided with the same reference numerals.

[0043] Fig. 1 shows a schematic and perspective partial view of a commercial vehicle 10 from above, which has a chassis 12. Thus, Fig. 1 shows a schematic top view of the chassis 12 or the commercial vehicle 10. Fig. 2 shows a schematic and perspective partial view of the commercial vehicle 10 or the chassis 12.

[0044] The chassis 12 has a vehicle axle 14, which in the exemplary embodiment is designed as the rear axle of the commercial vehicle 10. For example, the vehicle axle 14 is designed as a rigid axle 15. At least two, for example four, vehicle wheels 20, 22, 24, 26 of the commercial vehicle 10, which can rotate about a respective wheel rotation axis 16, 18, can be supported or are supported on a vehicle frame 28 of the commercial vehicle 10 via the vehicle axle 14. A first of the vehicle wheels 20 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 of the vehicle wheels 22 is arranged on a second side 34, different from the first side 32, with respect to the vehicle transverse direction 30. In the exemplary embodiment, a third of the vehicle wheels 24 is arranged on the first side 32 and the fourth of the vehicle wheels 26 is arranged on the second side 34.The first and second vehicle wheels 20, 22 and the third and fourth vehicle wheels 24, 26 are spaced apart from one another in the vehicle transverse direction 30. For example, the first and third vehicle wheels 20, 24 are rotatable about a first of the wheel rotation axes 16. For example, the second and fourth vehicle wheels 22, 26 are rotatable about the second of the wheel rotation axes 18. The wheel rotation axes 16, 18 preferably run parallel to one another, in particular at least substantially.

[0045] In order to particularly improve the maneuverability of the commercial vehicle 10, it is provided that the chassis 12 has at least one adjusting device 36, 38, by means of which the vehicle axle 14 is pivotally mounted relative to the vehicle frame 28 about a pivot axis 40 running obliquely or perpendicular to the respective wheel rotation axis 16, 18, in order to effect cornering or changes of direction of the commercial vehicle 10. In the exemplary embodiment, two adjusting devices 36, 38 are provided, by means of which the vehicle axle 14 can be pivoted about the pivot axis 40 relative to the vehicle frame 28. In the exemplary embodiment, a first of the adjusting devices 36 is arranged on the first side 32 and the second of the adjusting devices 38 is arranged on the second side 34.

[0046] The respective vehicle wheel 20, 22, 24, 26 is arranged on the vehicle axle 14 or coupled to the vehicle axle 14, in particular mechanically, in such a way that the respective vehicle wheel 20, 22, 24, 26 can be pivoted along with the vehicle axle 14 when the vehicle axle 14 is pivoted about the pivot axis 40. As a result, the respective vehicle wheel 20, 22, 24, 26 can be pivoted or deflected relative to a longitudinal axis 42 of the commercial vehicle 10, in particular by pivoting along with the vehicle axle 14, whereby cornering or changes of direction of the commercial vehicle 10 can be effected. A direction of travel of the commercial vehicle 10 is illustrated in Fig. 1 by an arrow 43.

[0047] Fig. 3 and Fig. 4 each show a respective schematic partial view of the commercial vehicle 10 from below. Thus, in Fig. 3 and Fig. 4, the chassis 12 and the commercial vehicle 10 are each shown in a respective schematic bottom view. By means of the respective adjusting device 36, 38, the vehicle axle 14 can be pivoted between at least two positions 44, 46 about the pivot axis 40 relative to the vehicle frame 28. Fig. 3 shows the vehicle axle 14 in the first position 44. Fig. 4 shows the vehicle axle 14 in the second position 46. In the second position 46, the vehicle axle 14, in particular a longitudinal axis 47 of the vehicle axle 14, is pivoted or deflected by an angle relative to the first position 44, in particular about the pivot axis 40. The angle or a 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 vehicle axle 14 can be pivoted about the pivot axis 40 by means of the respective adjustment device 36, 38, for example, by a maximum of 2.3 degrees.

[0048] Preferably, the respective adjustment device 36, 38 is designed as a hydraulic adjustment device 36, 38. This means that the respective adjustment device 36, 38 comprises, for example, a respective, in particular cylindrical, hydraulic unit. For example, the respective adjustment device 36, 38 comprises a respective cylinder 48, 50, each of which is designed to hold a liquid. The respective cylinder 48, 50 is partially delimited, for example, by a respective cylinder wall.

[0049] Preferably, the respective adjusting device 36, 38 each has a respective adjusting part 52, 54 that is translationally movable relative to the vehicle frame 28. The respective adjusting part 52, 54 is designed, for example, as a respective piston, which is accommodated in the respective cylinder 48, 50 so that it can be translationally moved, in particular relative to the respective cylinder wall. Preferably, the respective adjusting part 52, 54 partially delimits the respective cylinder 48, 50. A first of the adjusting parts 52 is arranged on the first side 32, and the second of the adjusting parts 54 is arranged on the second side 34.

[0050] For example, at least one pump element, in particular an electric one, is provided, by means of which the liquid can be pumped into the respective cylinder 48, 50. For example, at least one storage element, in particular referred to as a tank, is provided, in which the liquid can be stored. Preferably, the liquid stored in the storage element can be discharged from the storage element by means of the pump element and pumped into the respective cylinder 48, 50. For example, a length of the storage element is 300 millimeters. For example, a width of the storage element is 200 millimeters. For example, a height of the storage element is 200 millimeters. Preferably, at least one electronic computing device is provided for controlling or monitoring the respective adjusting device 36, 38.For example, the respective adjusting device 36, 38 each comprises a sensor element, in particular referred to as a position sensor, by means of which a respective position of the respective adjusting part 52, 54 can be detected or determined.

[0051] In a further embodiment, it is provided that the chassis 12 has at least one lever 56. In the exemplary embodiment, two levers 56, 58 are provided. A first of the levers 56 is arranged on the first side 32 and the second of the levers 58 is arranged on the second side 34. The respective lever 56, 58 can be pivoted about a respective lever axis 60, 62 of the respective lever 56, 58 relative to the vehicle frame 28, wherein the respective lever axis 60, 62 runs obliquely or perpendicular to the pivot axis 40. For example, a respective bearing is provided for the respective lever 56, 58, which is arranged on the respective side 32, 34, for example on a respective front suspension.

[0052] Preferably, the respective adjustment part 52, 54 is or can be coupled, in particular mechanically, to the vehicle axle 14 via the respective lever 58, 60 in such a way that the pivoting of the vehicle axle 14 can be effected by the translational movement of the respective adjustment part 52, 54 via the pivoting of the respective lever 56, 58. The first lever 56 is coupled to the first adjustment part 52. The second lever 58 is coupled to the second adjustment part 54. The first lever 56 can be pivoted about a first of the lever axes 60. The second lever 58 can be pivoted about the second of the lever axes 62.

[0053] The chassis 12 preferably comprises at least one link 64, 66 that can be moved translationally relative to the vehicle frame 28. In the exemplary embodiment, two links 64, 66 are provided. A first of the links 64 is arranged on the first side 32, and the second link 66 is arranged on the second side 34. The respective link 64, 66 can be moved translationally relative to the vehicle frame 28. The respective lever 56, 58 is or can be coupled, in particular mechanically, to the vehicle axle 14 via the respective link 64, 66 in such a way that the pivoting of the respective lever 56, 58 via the translational movement of the respective link 64, 66 can bring about the pivoting of the vehicle axle 14. The first link 64 is coupled, in particular mechanically, to the first lever 56. The second link 66 is coupled to the second lever 58, in particular mechanically.

[0054] By means of the respective lever 56, 58, a respective transmission ratio can be effected between the respective translational movement of the respective adjustment part 52, 54 and the respective link 64, 66. The transmission ratio between the respective movement of the respective adjustment part 52, 54 and the respective movement of the respective link 64, 66 can be, for example, 2.6. As a result, the respective adjustment device 36, 38, in particular the respective cylinder 48, 50, can be designed to be particularly compact, while at the same time, particularly high adjustment forces for pivoting the vehicle axle 14 can be transmitted to the vehicle axle 14.

[0055] The control arms 64, 66 are preferably connected to one another, in particular directly, via a control arm part 68. As a result, the control arms 64, 66 and the control arm part 68 together can form a stabilizer, particularly referred to as a stabilizer, of the chassis 12 or of the commercial vehicle 10. The respective 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 formed separately from one another or can be formed integrally together.

[0056] Preferably, the adjusting parts 52, 54 of the respective adjusting device 36, 38 are each moved oppositely, i.e. in opposite directions, to one another. For example, the adjusting devices 36, 38, in particular the adjusting parts 52, 54, are coupled to one another, in particular mechanically, for example via the vehicle axle 14, in such a way that the translational movement of the first adjusting part 52 or the translational movement of the first adjusting part 52 in a first adjustment direction is accompanied by the translational movement of the second adjusting part 54 in a second adjustment direction opposite to the first adjustment direction. In particular, the pivoting of the first lever 56 in a first pivoting direction is accompanied by the pivoting of the second lever 58 about a second pivoting direction opposite to the first pivoting direction.In particular, the translational movement of the first link 64 in a first direction is accompanied by a translational movement of the second link 66 in a second direction opposite to the first direction. As a result, the first vehicle wheel 20 and the third vehicle wheel 24 can be moved forward in the longitudinal direction of the commercial vehicle 10, while the second vehicle wheel 22 and the fourth vehicle wheel 26 can be moved rearward in the longitudinal direction of the commercial vehicle 10, and vice versa.

[0057] In a further embodiment, the commercial vehicle 10 has at least one drive device

[0058] 70, by means of which the commercial vehicle 10 can be driven. The drive device 70 is preferably designed as an electric drive device 70. For example, the drive device 70 has two electric machines, by means of which the commercial vehicle 10 can be driven. It is preferably provided that the vehicle wheels 20, 22, 24, 26 can be driven by means of the drive device 70. In this case, it is provided, for example, that the electric machines drive a common output shaft, which is connected or can be connected to the vehicle wheels 20, 22, 24, 26 in a torque-transmitting manner. The drive device 70 can therefore be referred to in particular as a double electric machine.

[0059] Preferably, the drive device 70 is pivotable about the pivot axis 40 relative to the vehicle frame 28 by means of the respective adjustment device 36, 38, in particular when pivoting the vehicle axle 14 about the pivot axis 40. For example, the drive device 70 comprises a cooling device 72, which can be designed, for example, as a cooling module.

[0060] Preferably, the pivot axis 40 extends through the vehicle axle 14, in particular the longitudinal axis 47 of the vehicle axle 14. This means that the pivot axis 40 intersects the vehicle axle 14, in particular the longitudinal axis 47. For example, two wishbones 74 are provided, which are preferably connected to one another at a common intersection point. The pivot axis 40 preferably extends through the intersection point. This allows transverse movements when pivoting the vehicle axle 14 to be particularly minimized.

[0061] Fig. 5 shows the commercial vehicle 10 or the chassis 12 in a schematic plan view according to a further embodiment, in which the pivot axis 40 is located outside the vehicle axis 14.

[0062] In a further embodiment, the chassis 12 comprises at least one component 84, 86, 88, 90 designed as a gas spring 76, 78, 80, 82, wherein in the exemplary embodiment, four of the gas springs 76, 78, 80, 82 or four of the components 84, 86, 88, 90 are provided. The vehicle axle 14 can be supported or is supported on the vehicle frame 28, in particular in a spring-loaded manner, for example upwards in the vertical direction of the commercial vehicle, via the respective component 84, 86, 88, 90.

[0063] Fig. 6 shows, in a schematic partial sectional view, an example of one of the respective components 84, 86, 88, 90 designed as a gas spring 76, 78, 80, 82. The respective gas spring 76, 78, 80, 82 is designed, for example, as a respective air spring and / or as a respective bellows spring.

[0064] In a further embodiment, the respective component 84, 86, 88, 90 or the respective gas spring 76, 78, 80, 82 each has a respective working chamber 92 designed to accommodate a fluid and a respective piston element 94 partially delimiting the working chamber 92 and a respective piston element 94. The respective working chamber 92 is partially delimited by a respective wall 96, which is in particular different from the piston element 94. The respective wall 96 is designed, for example, as a respective rolling bellows. For example, the respective piston element 94 is designed as a respective rolling piston. In the exemplary embodiment shown in Fig. 6, the respective working chamber 92 is partially delimited by a respective head plate 98, in particular upwards in the vertical direction of the commercial vehicle 10.Preferably, the respective piston element 94 partially delimits the respective working chamber 92 downwards in the vertical direction of the commercial vehicle 10. For example, the respective component 84, 86, 88, 90 or the respective gas spring 76, 78, 80, 92 each has a bionic design.

[0065] Preferably, the respective piston element 94 is coupled to the vehicle axle 14, in particular mechanically, in such a way that, by translationally moving the vehicle axle 14 relative to the vehicle frame 28 in a respective direction of movement 100, the respective piston element 94 is or becomes translationally movable relative to the vehicle frame 28 in the respective direction of movement 100, whereby a respective volume 102 of the respective working chamber 92 is or becomes variable. The respective direction of movement 100 runs, for example, parallel to the vertical direction of the commercial vehicle 10 and / or parallel to the pivot axis 40.

[0066] Preferably, the respective piston element 94 is coupled, in particular mechanically, to the vehicle axle 14 in such a way that, by pivoting the vehicle axle 14 about the pivot axis 40, the respective piston element 94 is or becomes movable in a second direction of movement 104 relative to the vehicle frame 28, which direction is different from the direction of movement 100. The respective movement of the respective piston element 94 in the second direction of movement 104 is preferably a respective translational movement which, for example, has at least one lateral component, i.e., a lateral component running in the vehicle transverse direction 30, whereby the movement can in particular be referred to as a lateral movement.The movement of the respective piston element 94 in the second movement direction 104 can cause additional forces, particularly referred to as air forces, particularly relative to the head plate 98, which can amount to, for example, up to 2.2 kilonewtons per respective gas spring 76, 78, 80, 82. This can compensate for a respective movement of the respective piston element 94 caused by the pivoting of the vehicle axle 14.

[0067] In particular, when the pivot axis 40 runs through the vehicle axle 14, the movement of the respective piston element 94 in the second direction of movement 104 when pivoting the vehicle axle 14 can be kept particularly small.

[0068] In the exemplary embodiment, a first of the components 84 is arranged on the first side 32 and a second of the components 86 is arranged on the second side 34. A third of the components 88 is arranged on the first side 32 and the fourth of the components 90 is arranged on the second side 34. For example, the first component 84 is arranged behind the third component 88 in the longitudinal direction of the commercial vehicle 10. For example, the second component 86 is arranged behind the fourth component 90 in the longitudinal direction of the commercial vehicle 10. Preferably, a diameter of the first component 84 is greater than a diameter of the third component 88 and / or a diameter of the second component 86 is preferably greater than a diameter of the fourth component 90. For example, the diameter of the first component 84 and / or of the second component 86 is 305 millimeters.For example, the diameter of the third component 88 and / or the diameter of the fourth component 90 is 195 millimeters. For example, the first and / or second component 84, 86, in particular an axial center of the first and / or second component 84, 86, is arranged further inward in the vehicle transverse direction 30 than the third and / or fourth component 88, 90, in particular than an axial center of the third and / or fourth component 88, 90. As a result, a respective distance between the respective component 84, 86 and the respective vehicle wheel 20, 22, 24, 26 can be ensured, in particular when the vehicle axle 14 is pivoted. List of reference numerals.

[0069] 10 commercial vehicles

[0070] 12 chassis

[0071] 14 vehicle axle

[0072] 15 rigid axle

[0073] 16 first wheel rotation axis

[0074] 18 second wheel rotation axis

[0075] 20 first vehicle wheel

[0076] 22 second vehicle wheel

[0077] 24 third vehicle wheel

[0078] 26 fourth vehicle wheel

[0079] 28 vehicle frames

[0080] 30 Vehicle transverse direction

[0081] 32 first page

[0082] 34 second page

[0083] 36 first adjustment device

[0084] 38 second adjustment device

[0085] 40 swivel axis

[0086] 42 Vehicle longitudinal axis

[0087] 43 Arrow

[0088] 44 first position

[0089] 46 second position

[0090] 47 Longitudinal axis

[0091] 48 cylinders

[0092] 50 cylinders

[0093] 52 first adjustment part

[0094] 54 second adjustment part

[0095] 56 first lever

[0096] 58 second lever

[0097] 60 first lever axis

[0098] 62 second lever axis

[0099] 64 first driver

[0100] 66 second driver

[0101] 68 Handlebar part

[0102] 70 Drive device

[0103] 72 Cooling system wishbone

[0104] Gas spring

[0105] Gas spring

[0106] Gas spring

[0107] Gas spring first component second component third component fourth component

[0108] Chamber of Labor

[0109] Piston element

[0110] wall

[0111] headstock

[0112] Direction of movement

[0113] Volume second direction of movement

Claims

Chassis (12) for a commercial vehicle (10), with a vehicle axle (14), via which at least two vehicle wheels (20, 22) of the commercial vehicle (10), which are rotatable about a respective wheel rotation axis (16, 18), can be supported on a vehicle frame (28) of the commercial vehicle (10), wherein at least one adjusting device (36) is provided, by means of which the vehicle axle (14) is pivotally mounted relative to the vehicle frame (28) about a pivot axis (40) extending obliquely or perpendicularly to the respective wheel rotation axis (16, 18) in order to effect cornering or changes of direction of the commercial vehicle (10), characterized in that • at least one lever (56) is provided which is pivotable relative to the vehicle frame (28) about a lever axis (60) extending obliquely or perpendicularly to the pivot axis (40), via which lever an adjusting part (52) of the adjusting device (36) which is movable translationally relative to the vehicle frame (28) is coupled to the vehicle axle (14) in such a way that the pivoting of the vehicle axle (14) can be effected by the translational movement of the adjusting part (52) via the pivoting of the lever (56), and / or • the at least two vehicle wheels (20, 22) can be driven by means of a drive device (70) of the commercial vehicle (10) and the drive device (70) can be pivoted about the pivot axis (40) relative to the vehicle frame (28) 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 vehicle axle (14) can be supported on the vehicle frame (28), wherein the component (84) has a A working chamber (92) designed to receive a fluid and a piston element (94) partially delimiting the working chamber (92) and coupled to the vehicle axle (14) in such a way that o by translational movement of the vehicle axle (14) relative to the vehicle frame (28) in a direction of movement (100), the piston element (94) can be moved translationally in the direction of movement (100) relative to the vehicle frame (28), whereby a volume (102) of the working chamber (92) can be changed, and o by pivoting the vehicle axle (14) about the pivot axis (40), the piston element (94) can be moved in a second direction of movement (104) relative to the vehicle frame (28), which direction is different from the direction of movement (100). Chassis (12) according to claim 1, characterized in that the adjusting device (36) is designed as a hydraulic adjusting device (36).Chassis (12) according to one of the preceding claims, characterized by a link (64) which is movable in translation relative to the vehicle frame (28), via which the lever (56) is coupled to the vehicle axle (14) in such a way that the pivoting of the vehicle axle (14) can be effected by pivoting the lever (56) via the translational movement of the link (64). Chassis (12) according to one of the preceding claims, characterized in that the pivot axis (40) runs through the vehicle axle (14). Chassis (12) according to one of the preceding claims, characterized in that the vehicle axle (14) is designed as a rigid axle (15).

Images