Axle load detection system, axle system and commercial vehicle having an axle load detection system

Abstract

An axle load detection system (1), in particular for a utility vehicle, has a force transmission element (2) and a sensor unit (40), wherein the sensor unit (40) comprises at least one sensor (42), wherein the force transmission element (2) comprises a first mounting region (10) and a second mounting region (20), wherein the first mounting region (10) is indirectly and / or directly fixed and / or fixable on a vehicle frame (52) of a vehicle, in particular a utility vehicle, wherein an air spring (120) and / or a control arm (110), in particular a trailing arm, is indirectly and / or directly arranged and / or arrangeable on the second mounting region (20), wherein the sensor unit (40) is designed to determine and / or detect a force, in particular a force in a support direction (AR), which is transmitted by the force transmission element (2) between the first mounting region (10) and the second mounting region (20).

Description

Technical Field

[0001] This invention relates to an axle load detection system, an axle system, and a commercial vehicle equipped with the axle load detection system. Background Technology

[0002] Commercial vehicles are known in the prior art; they are used to transport payloads from one place to another. To ensure safe vehicle operation and simultaneously prevent road overloading, axle loads must not exceed certain levels. To achieve this, the driver or operator is particularly responsible for monitoring compliance with maximum axle loads. To determine axle loads, scales are typically used, which must be individually positioned under each axle of the commercial vehicle. Therefore, this method for determining axle loads is very time-consuming and costly. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a simple and fast method for determining axle load.

[0004] This objective is achieved through the axle load detection system, axle system, and commercial vehicle according to the present invention. Other features, advantages, and embodiments of the invention are derived from the description and drawings.

[0005] According to the present invention, an axle load detection system specifically for commercial vehicles is provided. Specifically, the axle load detection system has a force transmission element and a sensor unit, wherein the sensor unit may have at least one sensor, wherein the force transmission element has a first mounting area and a second mounting area, wherein the first mounting area is indirectly and / or directly fixed to or can be fixed to the vehicle frame, particularly the frame of a commercial vehicle, wherein an air spring and / or a control arm, particularly a trailing arm, is indirectly and / or directly arranged and / or can be arranged on the second mounting area, wherein the sensor unit is designed to determine and / or detect the force transmitted through the force transmission element between the first and second mounting areas, particularly the force in the support direction. Therefore, the axle load detection system according to the present invention can be used to detect the force acting on the axle. Advantageously, the axle load detection system is a commercial vehicle axle load detection system. Commercial vehicles in the sense of the present invention are particularly suitable for road use and / or for transporting loads, wherein commercial vehicles particularly have a permissible total load exceeding 3.5 t, preferably exceeding 7.5 t, and particularly preferably exceeding 15 t. It is particularly advantageous that the commercial vehicle is a trailer, especially a semi-trailer. In other words, the axle load detection system can therefore also be a commercial vehicle trailer axle load detection system. Specifically, the axle load detection system has a force transmission element. Specifically, this force transmission element includes a first mounting area and a second mounting area. Through the first mounting area, the force transmission element is indirectly and / or directly supported on the vehicle frame, particularly on the frame of a commercial vehicle. The first mounting area can be designed to be fixed or capable of being fixed to the vehicle frame. Advantageously, this fixing can be achieved by form-locking and / or force-locking, particularly by releasable fastening devices (e.g., screws or bolts). Alternatively or additionally, it is preferred that the fixing, especially in the first mounting area, can be non-releasable, particularly by material bonding. This material bonding fixing can be achieved by welding, etc. The second mounting area of ​​the force transmission element is used to absorb forces from the axle support element. Therefore, the second mounting area of ​​the force transmission element is particularly indirectly and / or directly connected to the air spring and / or the control arm (particularly the trailing arm) of the axle support element. Therefore, the force transmission element can absorb the force from the control arm or air spring through the second mounting area and safely transmit it to the vehicle frame through the first mounting area. Thus, the force transmission element can be, in particular, a separate additional component, or, for example, a retaining bracket on which a tow arm of a commercial vehicle (especially a trailer tow arm) is arranged and / or capable of being arranged. In addition to the force transmission element, the axle load detection system according to the invention also includes a sensor unit, wherein the sensor unit has at least one sensor.In this configuration, the sensor unit is designed to determine and / or detect the force transmitted between the first and second mounting areas, particularly the force in the support direction. This unit can be used to determine the force transmitted through the force transmission element. Advantageously, the support direction of the axle load detection system (particularly in the mounted state) is pointed at least substantially parallel to the direction of the gravitational acceleration vector and / or at least substantially parallel to the compression and / or expansion directions of the air spring and / or the supported axle. "Substantially parallel" should be specifically understood to mean that the minimum angle between the two relevant directions can be a maximum of 15°, preferably a maximum of 10°, particularly preferably a maximum of 5°, and most preferably a maximum of 1°. Alternatively or additionally, it is preferred that the support direction can also be, in particular, the direction in which the air spring of a commercial vehicle performs its inward or outward spring movement. Therefore, the sensor or sensor unit is specifically arranged in or on the force transmission element to achieve a particularly compact and secure arrangement of the sensor. The axle load detection system according to the invention can determine or confirm the axle load acting on the axle system in a simple and safe manner without the use of scales or other separate components.

[0006] Advantageously, the sensor unit has multiple sensors. By providing multiple sensors, a certain degree of redundancy can be introduced into the system, thereby improving the safety of the axle load detection system. However, it is advantageous that all sensors in the sensor unit are designed to determine or be able to determine at least a portion of the force transmitted between the first and second mounting areas, particularly a portion of the force in the support direction. In other words, this can mean that each sensor in the sensor unit is specifically capable of determining the force and / or stress, particularly mechanical stress. For example, such a sensor can therefore be a piezoelectric ceramic sensor, a strain gauge, a current sensor, and / or a voltage sensor. Advantageously, all sensors in the sensor unit of the axle load detection system are arranged on or in a force-transmitting element. In other words, the axle load detection system can therefore have not only one force-transmitting element but also multiple force-transmitting elements, wherein one or more sensors can be arranged on or in these elements. This enables particularly reliable measurement of existing axle loads.

[0007] Advantageously, at least one sensor is fixed on and / or in the force transmission element. In other words, this means that at least one sensor is arranged on each force transmission element such that the sensor cannot be offset relative to the force transmission element. By fixing at least one sensor to each force transmission element, the force transmitted by the force transmission element between the first mounting area and the second mounting area can be determined in a particularly secure manner.

[0008] Advantageously, the sensors arranged on the force transmission elements are located in or intersect with a plane. In particular, the normal to this plane is at least substantially parallel to the support direction. This allows for the determination of the load on the force transmission elements, especially the load in the support direction, with particularly high accuracy. It is advantageous to arrange sensors on the respective force transmission elements or all force transmission elements such that all sensors are located in or intersect with a plane whose normal is at least substantially parallel to the support direction. However, it is possible that this arrangement of sensors exists only for one force transmission element of the axle load sensing system, while other force transmission elements have sensors that are not located in the plane, or sensors that are not located in the plane are arranged on these force transmission elements. However, it is particularly preferred that all force transmission elements of the axle load detection system are designed or arranged such that, in each case, at least one force transmission element is located in or intersects a plane whose normal is at least substantially parallel to the support direction. In this way, particularly high measurement accuracy can be achieved.

[0009] Advantageously, the axle load detection system has multiple force transmission elements, wherein, in particular, at least one sensor is arranged on each force transmission element. By using multiple force transmission elements, particularly two or three, axle load or axle force can be detected with exceptional precision. Advantageously, the axle load detection system is designed such that the second mounting area of ​​at least one force transmission element is arranged indirectly and / or directly on the air spring, and wherein the second mounting areas of other force transmission elements are arranged indirectly and / or directly on the control arm (particularly the trailing arm). However, it is advantageous that all force transmission elements are designed and / or arranged such that their first mounting areas are fixed or can be fixed to the frame, and wherein the force transmission elements are used to transmit the axle load to the frame. This design of the axle load detection system allows the axle support force to be determined in a particularly reliable manner via the steering element and the air spring. Advantageously, the axle load detection system is arranged such that all axle forces are transmitted from the axle to the vehicle frame via the force transmission elements. In other words, this can mean that the axle is connected to the frame only via force-transmitting elements, where advantageously, the respective first mounting areas of these force-transmitting elements are directly or indirectly fixed to or arranged on the vehicle's supporting frame. This design of the axle support or axle load detection system allows for the determination of all support forces of the axle load detection system in a particularly reliable manner. Therefore, a particularly simple evaluation procedure can be implemented, especially for the conversion of mechanical stress or force detected by the sensors of the sensor unit, thereby saving costs.

[0010] Advantageously, at least one sensor (preferably at least two and / or all sensors) of the sensor unit is a static and / or passive sensor, particularly a strain gauge. A static sensor is one capable of continuously determining or measuring static loads. Therefore, in particular, a sensor with a piezoelectric ceramic measuring element is not a static sensor. On the other hand, a passive sensor is one that does not generate or produce its own energy (in particular its own voltage). Therefore, a piezoelectric ceramic sensor is also not a passive sensor. Thus, advantageously, one sensor (preferably at least two and / or all sensors) of the sensor unit and / or a force transmission element can be a strain gauge. Alternatively or additionally, it is preferred that the sensor can also be a resistive force sensor. By using static and / or passive sensors, static loads on the axles can be detected in a particularly simple manner, thereby allowing the forces acting on the axle system to be determined reliably. Alternatively, piezoelectric ceramic elements or dynamic force sensors can also be used, for example, where axle loads can be reliably determined, particularly by an integrated unit.

[0011] Advantageously, the force transmission element is specifically made of metal or designed to transmit at least 10,000 Newtons (10,000 N) of force between the first and second mounting areas, preferably at least 50,000 Newtons (50,000 N), and particularly most preferably 100,000 Newtons (100,000 N). High force transmission capacity between the first and second mounting areas can be achieved by forming the force transmission element with metal (especially steel). Since the force transmission element is capable of transmitting at least 10,000 Newtons of force between the first and second mounting areas, particularly in the support direction, the axle load detection system can also be safely used in small commercial vehicles. If the force (particularly in the support direction) that can be transmitted between the first and second mounting areas is at least 100,000 Newtons, it can be ensured that the axle load detection system can also be safely used in heavy commercial vehicles, particularly semi-trailers.

[0012] Advantageously, the first mounting area has a particularly flat first mounting surface, wherein, in particular, the first mounting surface has a normal in the support direction, and / or the second mounting area has a particularly flat second mounting surface, wherein, in particular, the second mounting surface has a normal in the support direction. In this case, the first mounting surface of the first mounting area is used for indirect and / or direct contact with the frame or with the support surface of the frame. By forming the first mounting surface in a plane, it is possible to safely transmit even higher forces without exceeding the permissible surface pressure. If the first mounting surface is formed such that it has a normal in the support direction, or a normal at least substantially parallel to the support direction, it can be ensured that no lateral forces are introduced into the axle load detection system through the contact between the first mounting surface and the support surface, particularly the contact with the support surface of the frame. Therefore, by forming the first mounting surface on a plane whose normal points at least substantially in the support direction, measurement errors occurring in the axle load detection system can be reduced. Alternatively or additionally, preferably, the second mounting area may also have a second mounting surface, which is advantageously flat, wherein the second mounting surface has, in particular, a normal that is at least substantially parallel to the support direction. In this way, the advantages already explained regarding the first mounting surface can also be realized in the second mounting surface. However, alternatively, the second mounting area is preferably formed, for example, a recessed area, specifically for receiving the pivot pin for the control arm. Advantageously, the above explanation regarding the first and / or second mounting areas applies to the force transmission elements and / or half or most of the force transmission elements and / or all of the force transmission elements in the axle load detection system.

[0013] Advantageously, at least one force-transmitting element is a retaining bracket, and / or wherein at least one force-transmitting element is an intermediate element, particularly a plate-shaped intermediate element, for mounting between the air spring and the frame. The design of the retaining bracket as a force-transmitting element means that the axle force transmitted through the steering element can be determined and / or detected by the axle load detection system in a particularly simple manner. Therefore, the retaining bracket in the sense of the invention is particularly an element that transmits force between the control arm (particularly the trailing arm) and the frame, and / or supports and / or mounts the control arm. The intermediate element in the sense of the invention is particularly a force-transmitting element arranged in the force flow between the air spring and the frame. Therefore, the intermediate element is particularly advantageously designed specifically for transmitting force between the air spring and the frame. The air spring preferably has a piston (particularly a plunger) and / or an end element (particularly a cap) and / or an air spring bellows. The plunger is particularly capable of entering the working volume of the air spring during compression. For example, the plunger can be particularly indirectly and / or directly fixed to the frame or control arm via the intermediate element. On the other hand, the end element is used to support the air spring relative to the frame or control arm and advantageously limits the working volume of the air spring in a manner opposite to the plunger. In particular, an air spring bellows made of an elastic material such as rubber is advantageously arranged between the plunger and the end element, wherein the working volume enclosed by the plunger, the end element, and the air spring bellows can be compressed and / or reduced, especially in the support direction, by moving the end element relative to the plunger. An intermediate element designed as a force-transmitting element can be particularly arranged between the piston and the control arm, and / or between the piston or end element of the air spring and the frame. In other words, the intermediate element can be used to transmit forces introduced or transmitted by the control arm into the air spring or forces transmitted or introduced between the air spring and the frame. Alternatively or additionally, it is preferred that the end element and / or the plunger can also be designed as force-transmitting elements. In other words, in possible embodiments, the plunger or end element can therefore be equipped with sensors to determine the transmitted force, especially the force in the support direction. This can be achieved, in particular, by mounting strain gauges on the plunger. Advantageously, the sensors on the intermediate elements and / or plungers are arranged such that they are located within the protrusions of the air spring bellows. In this case, "located within the protrusions of the air spring bellows" means that the projection of the sensor onto a plane perpendicular to the support direction lies within the outer contour of the projection of the air spring bellows onto that plane perpendicular to the support direction. In other words, this can mean that, when viewed in the support direction, the sensor or its projection is surrounded by the air bellows or its projection. In this way, a particularly compact arrangement of the sensors can be achieved.

[0014] In a preferred embodiment, the retainer has an end wall and two side walls, wherein the side walls are connected to each other via the end walls. The side walls advantageously each have a groove for receiving a pivot pin, on which a steering element is advantageously pivotally mounted or can be mounted. The side walls are connected to each other, particularly via the end walls. Advantageously, the end walls and side walls each have mounting surfaces, which can advantageously be located in a plane. In this case, the mounting surfaces are used for fixation to the frame, particularly by means of material bonding or force locking. In other words, the mounting surfaces can form a first mounting area or a portion thereof. Advantageously, the retainer can be formed as a sheet metal structure and / or a cast body, wherein, advantageously, the retainer is integrally formed to achieve a mechanically loadable structure. By providing a retainer with two side walls (especially side walls oriented parallel to each other) and one end wall (advantageously oriented laterally relative to the side walls), a retainer design that is particularly cost-effective and mechanically resilient can be achieved.

[0015] In an advantageous embodiment, the sidewalls and / or endwalls of the retaining bracket form part of a first mounting area, wherein, in particular, a first mounting surface of the first mounting area forms the distal end of the sidewalls and / or endwalls, especially in the support direction. In other words, the sidewalls and / or endwalls of the retaining bracket can be designed to be directly or indirectly fixed to the frame. In this way, a particularly secure mechanical transmission of the support force between the retaining bracket and the frame can be achieved.

[0016] Advantageously, the axle load detection system includes an evaluation unit designed to receive measurement data from at least one sensor (preferably all sensors) of the sensor unit and / or the axle load detection system. The evaluation unit is designed to convert the sensor-detected measurements into axle loads, particularly using a calibration table and / or a neural network. The evaluation unit can be a standalone unit or part of a control unit in a commercial vehicle equipped with the axle load detection system. Alternatively and / or additionally preferably, the evaluation unit can be designed to transmit the determined and / or recorded loads or data (particularly axle loads) to another system and / or control unit, particularly another system and / or control unit of the vehicle. This transmission can be, for example, via cable or wirelessly. Alternatively and / or additionally preferably, the evaluation unit can also be connected to or be able to connect to a CAN bus. Therefore, the evaluation unit is particularly used to convert recorded measurements into force directions, particularly support directions. This can be accomplished, for example, using a calibration table stored in the evaluation unit and / or using empirical values ​​and a neural network. By using calibration tables and / or neural networks, static underdetermined or overdetermined systems can also be used, while still being able to reliably determine the axle loads that occur, especially in the case of static overdetermined systems.

[0017] Preferably, the axle load detection system is designed to enable wireless transmission of measurements between sensors and / or evaluation units within the sensor unit. In other words, the transmission of measurements between sensors within the sensor unit or between the evaluation unit and a sensor can be wireless, thereby significantly reducing the assembly work required for the axle load detection system. However, alternatively, it is preferred that the transmission of measurements can also be wired to particularly reduce the occurrence of noise.

[0018] Another aspect of the invention relates to an axle system, particularly a commercial vehicle axle system. Advantageously, the axle system includes a control arm (particularly a trailing arm), an air spring, and at least one axle load detection system, particularly an axle load detection system as described in the context, wherein the air spring and / or control arm are arranged indirectly and / or directly on a second mounting area of ​​the force transmission element of the axle load detection system. This arrangement allows for the realization of the advantages described in the context within the axle system.

[0019] In an advantageous embodiment of the axle system, the axle load detection system includes a first force transmission element and a second force transmission element, wherein an air spring is indirectly and / or directly arranged on a second mounting area of ​​the first force transmission element, and wherein a control arm is indirectly and / or directly arranged on a second mounting area of ​​the second force transmission element. In other words, this can mean that the first force transmission element is used to transmit force between the air spring and the frame, and the second force transmission element is used to transmit force between the control arm and the frame. By providing two force transmission elements in this way (where, advantageously, at least one sensor of the sensor unit is arranged on each of these force transmission elements), it is advantageous to determine the force transmitted through the control arm and the force transmitted through the air spring. Advantageously, the axle system includes not only the first and second force transmission elements, but also third and fourth force transmission elements, the first and second force transmission elements specifically responsible for, for example, the left-side air spring and the left-side control arm of the axle, while the third and fourth force transmission elements are responsible for, for example, the right-side control arm and the right-side air spring of the axle, respectively. By providing, for example, four force transmission elements, all supporting force transmission elements of the axle can be detected by the axle load detection system or monitored by the sensor unit of the axle load detection system, thus the axle load can be determined in a particularly reliable manner.

[0020] In a preferred embodiment, the axle system is designed such that the ratio of the force transmitted in the support direction by the first force transmission element to the force transmitted in the support direction by the second force transmission element is in the range of 0.3 to 0.65. In this way, monitoring of the axle load, particularly mechanically load-bearing loads, can be achieved. Alternatively, preferably, this ratio can also be in the range of 0.4 to 0.52, in which case particularly high-precision detection of the transmitted axle load can be achieved.

[0021] Another aspect of the invention relates to a commercial vehicle, particularly a commercial vehicle trailer, having an axle system as described in the context, and / or an axle load detection system as described in the context. The commercial vehicle trailer can, in particular, be a semi-trailer. Advantageously, each axle of the commercial vehicle has an axle system as described in the context. Attached Figure Description

[0022] Other advantages and features will become apparent from the following description of the subject matter of the invention with reference to the accompanying drawings.

[0023] Figure 1 An axle system with an axle load detection system is shown; and

[0024] Figure 2 A force transmission element in the form of an intermediate element is shown. Detailed Implementation

[0025] Figure 1An axle system 100 is shown for supporting axles, particularly in the support direction AR. The axle system 100 includes an axle load detection system 1. The axle load detection system 1 has two force transmission elements 2, one of which is designed as a retainer 6, and the other as an intermediate element 4. Each force transmission element 2 has a first mounting region 10 and a second mounting region 20. Advantageously, a first mounting surface 12 is arranged or formed in the first mounting region 10, and a second mounting surface 22 is arranged or formed in the second mounting region 20. The force transmission element 2, formed as the intermediate element 4, has a first mounting surface 12 in the first mounting region 10 and a second mounting surface 22 in the second mounting region 20, wherein the normals of the flat first mounting surface 12 and the second mounting surface 22 are formed parallel to the support direction AR. The intermediate element 4 has a first sensor 42 and an evaluation unit 30 on its outer surface. In this configuration, sensor 42 of sensor unit 40 is used to determine or detect the force transmitted between the intermediate element 4 and the first mounting area 10 and the second mounting area 20, particularly the force in the support direction AR, between the frame 52 and the air spring 120. The air spring 120 supports the control arm 110 relative to the frame 52, particularly in the support direction AR. In the illustrated embodiment, the control arm 110 is a trailing arm, as shown, which can surround the supported axle. The force transmission element 2, designed as a retaining bracket 6, supports the control arm 110 using its second mounting area 20. The retaining bracket 6 has two sidewalls 32 interconnected by end walls 34. Therefore, each sidewall 32 has a second mounting area 20. The first mounting area 10 of the force transmission element 2, designed as a retaining bracket 6, supports the retaining bracket 6 relative to the frame 52. The sidewalls 32 and end walls 34 each have at least one sensor 42 of the sensor unit 40 of the axle load detection system 1.

[0026] Figure 2 An isometric view of the force-transmitting element 2, designed as an intermediate element 4, is shown. In the installed state, the intermediate element 4 is supported relative to the frame 52 by the first mounting surface 12 of the first mounting region 10. On the other hand, in this case, the second mounting region 20 is used to connect to the air spring 120 or the retaining bracket 6 to absorb the force from the retaining bracket 6 or the air spring 120. A sensor 42 (specifically a strain gauge) is arranged on the outer surface between the first mounting region 10 and the second mounting region 20.

[0027] List of reference numerals

[0028] 1 - Axle Load Detection System

[0029] 2 - Force Transmission Components

[0030] 4 - Intermediate Components

[0031] 6 - Maintain support

[0032] 10 - First Installation Area

[0033] 12 - First mounting surface

[0034] 20 - Second Installation Area

[0035] 22 - Second mounting surface

[0036] 30 - Evaluation Unit

[0037] 32 - Sidewall

[0038] 34 - End wall

[0039] 40 - Sensor Unit

[0040] 42 - Sensors

[0041] 52 - Frame

[0042] 100 - Axle System

[0043] 110 - Control Arm

[0044] 120 - Air Spring

[0045] AR - Support Direction

Claims

1. An axle system (100) comprising: Control arm (110); as well as Air spring (120); as well as At least one axle load detection system (1), The axle load detection system (1) includes a force transmission element (2) and a sensor unit (40). The force transmission element (2) is a retaining bracket (6). The sensor unit (40) includes at least one sensor (42). The force transmission element (2) includes a first mounting area (10) and a second mounting area (20). The first mounting area (10) can be directly or indirectly fixed to the vehicle frame (52). The sensor unit (40) is designed to determine and / or detect the force transmitted between the first mounting region (10) and the second mounting region (20) via the force transmission element (2). The control arm (110) is arranged indirectly or directly on the second mounting area (20) of the force transmission element (2).

2. The axle system (100) according to claim 1, in, The sensor unit (40) includes multiple sensors (42).

3. The axle system (100) according to claim 1 or 2, in, The sensor unit (40) is designed to determine and / or detect the force in the support direction (AR) transmitted between the first mounting area (10) and the second mounting area (20) via the force transmission element (2).

4. The axle system (100) according to claim 3, in, At least one of the sensors (42) is fixed on or in the force transmission element (2).

5. The axle system (100) according to claim 4, in, The sensor (42) arranged on the force transmission element (2) is located in a plane having a normal that is at least substantially parallel to the support direction (AR), or intersects with a plane having a normal that is at least substantially parallel to the support direction (AR).

6. The axle system (100) according to claim 1 or 2, in, The axle load detection system (1) includes multiple force transmission elements (2).

7. The axle system (100) according to claim 6, in, At least one of the sensors (42) is arranged on each of the force transmission elements (2).

8. The axle system (100) according to claim 1 or 2, in, At least one of the sensors (42) in the sensor unit (40) is a static or passive sensor.

9. The axle system (100) according to claim 8, in, At least two of the sensors (42) in the sensor unit (40) are static or passive sensors.

10. The axle system (100) according to claim 8, in, The static or passive sensor is a strain gauge.

11. The axle system (100) according to claim 1 or 2, in, The force transmission element (2) is made of metal and / or is designed to transmit a force of at least 10,000 Newtons between the first mounting area (10) and the second mounting area (20).

12. The axle system (100) according to claim 11, in, The force transmission element (2) is designed to transmit a force of at least 50,000 Newtons between the first mounting area (10) and the second mounting area (20).

13. The axle system (100) according to claim 12, in, The force transmission element (2) is designed to transmit a force of 100,000 Newtons between the first mounting area (10) and the second mounting area (20).

14. The axle system (100) according to claim 3, in, The first mounting area (10) has a first mounting surface (12), and / or The second mounting area (20) has a second mounting surface (22).

15. The axle system (100) according to claim 14, in, The first mounting surface (12) is flat, and / or The second mounting surface (22) is flat.

16. The axle system (100) according to claim 14, in, The first mounting surface (12) has a normal in the support direction (AR), and / or The second mounting surface (22) has a normal in the support direction (AR).

17. The axle system (100) according to claim 1 or 2, in, At least one of the force transmission elements (2) is an intermediate element (4) for installation between the air spring (120) and the frame (52).

18. The axle system (100) according to claim 17, in, The intermediate element (4) is a plate-shaped intermediate element (4).

19. The axle system (100) according to claim 1 or 2, in, The retaining bracket (6) includes an end wall (34) and two side walls (32). The sidewalls (32) are connected to each other via the endwalls (34).

20. The axle system (100) according to claim 1 or 2, in, The axle load detection system (1) includes an evaluation unit (30). The evaluation unit (30) is designed to receive measurement data from at least one of the sensors (42). The evaluation unit (30) is designed to convert the measured values ​​detected by the sensor (42) into axle loads.

21. The axle system (100) according to claim 20, in, The evaluation unit (30) is designed to use a calibration table to convert the measurements detected by the sensor (42) into axle loads.

22. The axle system (100) according to claim 3, in, The axle load detection system (1) includes a first force transmission element (2) and a second force transmission element (2). The air spring (120) is arranged, either indirectly or directly, on the second mounting area (20) of the first force transmission element (2), and The control arm (110) is arranged indirectly or directly on the second mounting area (20) of the second force transmission element (2).

23. The axle system (100) according to claim 22, in, The axle system (100) is configured such that the ratio of the force transmitted by the first force transmission element (2) in the support direction (AR) to the force transmitted by the second force transmission element (2) in the support direction (AR) is in the range of 0.3 to 0.

65.

24. The axle system (100) according to claim 1 or 2, in, The axle system (100) is a commercial vehicle axle system.

25. The axle system (100) according to claim 1 or 2, in, The control arm (110) is a tow arm.

26. The axle system (100) according to claim 1 or 2, in, The axle load detection system (1) is used in commercial vehicles.

27. The axle system (100) according to claim 1 or 2, in, The first mounting area (10) can be directly or indirectly fixed to the frame of a commercial vehicle.

28. The axle system (100) according to claim 8, in, All of the sensors (42) in the sensor unit (40) are static or passive sensors.

29. A commercial vehicle comprising an axle system (100) according to any of the preceding claims.

30. The commercial vehicle according to claim 29, in, The commercial vehicle in question is a commercial vehicle trailer.

Images