Air suspension assembly and vehicle

Abstract

The application relates to an air suspension assembly and a vehicle, the air suspension assembly comprising a vehicle frame and a suspension assembly, the suspension assembly comprising a connecting unit and a suspension unit, the suspension unit comprising a bracket arm, a support and an air spring, each bracket arm comprising a first beam segment and a second beam segment connected to each other, an installation space being formed between the two second beam segments, the installation space being used for installing a driving mechanism, and the distance between the two second beam segments being greater than the distance between the two first beam segments. By arranging the distance between the two second beam segments to be greater than the distance between the two first beam segments, the capacity of the installation space formed between the two second beam segments in the middle of the air suspension assembly can be increased, so that the driving mechanism can be arranged in the air suspension assembly, and the problem that the vehicle needs to meet the legal width due to the need of separately arranging an independent suspension for the driving mechanism can be effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an air suspension assembly and a vehicle. BACKGROUND

[0002] The automobile suspension system is one of the important assemblies of the automobile, which connects the frame and the axle well. With the development of the automobile industry, the running stability and comfort of the automobile gradually become the key factors for the public, and the traditional automobile suspension mostly adopts the mechanical suspension. However, due to the large rigidity of the mechanical suspension, the comfort degree and the running stability of the whole vehicle are poor. Compared with the mechanical suspension, the air suspension can effectively improve the driving smoothness of the vehicle, so that the ride is safer and more comfortable. When the load changes, the air suspension can automatically adjust to maintain the height of the vehicle body unchanged. The vehicle equipped with the air suspension has small vibration, which can reduce the damage to the electrical, instrument and other accessories of the vehicle body and chassis, reduce the maintenance cost of the vehicle, reduce the impact on the road, protect the road and reduce the maintenance cost of the highway, so the application of the air suspension on the automobile is more and more common.

[0003] In the related art, the air suspension needs to be arranged on the frame together with other components and assemblies of the vehicle. However, the existing air suspension does not have a connecting interface or mounting space that can be used to match other components, so that the other components need to be additionally provided with an independent suspension for installation. The provision of the independent suspension will bring a burden to the vehicle to meet the legal width, and greatly increase the manufacturing cost, which is not conducive to the design and development of the vehicle. Therefore, how to improve the space utilization of the air suspension is a problem to be solved by those skilled in the art. SUMMARY

[0004] Therefore, it is necessary to provide an air suspension assembly and a vehicle in view of the problem that the existing air suspension does not have a connecting interface or mounting space that can be used to match other components, so that the other components need to be additionally provided with an independent suspension for installation. The provision of the independent suspension will bring a burden to the vehicle to meet the legal width, and greatly increase the manufacturing cost, which is not conducive to the design and development of the vehicle.

[0005] The first aspect of the present application provides an air suspension assembly, which comprises a frame and a suspension assembly. The suspension assembly comprises a connecting unit and two oppositely arranged suspension units. The connecting unit is connected between the two suspension units. Each suspension unit comprises a bracket arm, a support and an air elastic element. One end of the bracket arm is connected to one end of the frame through the support, and the other end of the bracket arm is connected to the other end of the frame through the air elastic element. Each bracket arm comprises a first beam segment and a second beam segment connected to each other. An installation space is formed between the two second beam segments, and the installation space is used to install a driving mechanism.

[0006] The distance between the two second beam segments is greater than the distance between the two first beam segments.

[0007] In one of the embodiments, each of the suspension units further comprises a first adapter and a second adapter, one end of the first beam segment away from the second beam segment is movably connected to the support through the first adapter, and one end of the second beam segment away from the first beam segment is connected to the air spring through the second adapter.

[0008] In one of the embodiments, the connecting unit is connected between the two second beam segments, and the distance between the first adapter and the connecting unit is greater than the distance between the air spring and the connecting unit.

[0009] In one of the embodiments, each of the support arms further comprises an extension segment, and the extension segment is connected between the first beam segment and the second beam segment.

[0010] In one of the embodiments, the height of the first beam segment and the extension segment gradually increases from one end of the first beam segment close to the support to one end of the extension segment close to the second beam segment.

[0011] In one of the embodiments, the connecting unit comprises a connecting piece and a fastener, the connecting piece is arranged between the two support arms, the fastener is arranged between the end of the connecting piece and the corresponding support arm, and the fastener is used to mount the connecting piece between the two support arms.

[0012] In one of the embodiments, the connecting piece comprises a first rod portion, a second rod portion and a third rod portion, the second rod portion is connected between the first rod portion and the third rod portion, the first rod portion and the third rod portion are arranged obliquely relative to the second rod portion, an avoiding space is formed between the first rod portion, the second rod portion and the third rod portion and faces the bracket, and the driving mechanism is at least partially accommodated in the avoiding space.

[0013] In one of the embodiments, the first rod portion is provided with a first accommodating cavity and a first opening, the third rod portion is provided with a second accommodating cavity and a second opening, the first accommodating cavity and the second accommodating cavity are used to accommodate the transmission shaft, the first opening is used to communicate the first accommodating cavity with the external space, and the second opening is used to communicate the second accommodating cavity with the external space.

[0014] In one of the embodiments, the air suspension assembly further comprises an end pipe, and the end pipe is arranged on the side of the support arm away from the connecting unit, and the end pipe is used to be connected with the wheel hub.

[0015] The second aspect of the present application provides a vehicle, which comprises a transmission shaft, a driving mechanism and the air suspension assembly in any one of the above embodiments, the driving mechanism is in transmission connection with the transmission shaft, the driving mechanism is used to drive the transmission shaft to rotate, and the transmission shaft and the driving mechanism are arranged between the two second beam segments.

[0016] The region surrounded by the two second beam segments is used as the mounting space of the driving assembly, and the distance between the two second beam segments is greater than the distance between the two first beam segments, so that the capacity of the mounting space between the two second beam segments in the air suspension assembly is increased, the driving mechanism can be arranged in the air suspension assembly, the problem of the need for a separate suspension for the driving mechanism and the resulting burden on the legal width of the vehicle can be effectively solved, the driving mechanism is arranged in the air suspension assembly, the manufacturing cost is greatly reduced, and the design and development of the vehicle are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the front side of the air suspension assembly in an embodiment of the present application.

[0018] Figure 2 It is a top view of the support arm in an embodiment of the present application.

[0019] Figure 3 It is a side view of the support arm in an embodiment of the present application.

[0020] Figure 4 It is a schematic view of the rear side of the air suspension assembly in an embodiment of the present application.

[0021] Figure 5 It is a schematic view of the connecting piece in an embodiment of the present application.

[0022] Figure 6 It is a schematic view of the first transmission shaft and the second transmission shaft in an embodiment of the present application.

[0023] Figure 7 It is a schematic view of the second transmission shaft, the fourth transmission shaft and the wheel hub drive in an embodiment of the present application.

[0024] Wherein, the reference signs are: air suspension assembly 1, cross beam 11, longitudinal beam 12, support arm 21, first beam segment 211, extension segment 212, second beam segment 213, support piece 22, first support part 221, second support part 222, third support part 223, air elastic piece 23, first adapter 24, second adapter 25, connecting piece 26, first rod part 261, second rod part 262, third rod part 263, first opening a, second opening b, shock absorber 27, rear bracket 31, transverse thrust rod 32, flange plate 33, end pipe piece 34, wheel hub motor 41, transmission 42, first transmission shaft 51, second transmission shaft 52, fourth transmission shaft 53, wheel hub 6. DETAILED DESCRIPTION

[0025] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0028] An embodiment of the present application provides a vehicle, which can be a new energy commercial vehicle. The vehicle comprises an air suspension assembly 1, a driving mechanism, a transmission shaft and a wheel hub 6; the driving mechanism, the transmission shaft and the wheel hub 6 are arranged on the air suspension assembly 1, and the air suspension assembly 1 is used for providing a connecting interface and a mounting position for the driving mechanism, the transmission shaft and the wheel hub 6; the driving mechanism is in driving connection with the transmission shaft, the transmission shaft is in driving connection with the wheel hub 6, and the transmission shaft is used for transmitting the driving force of the driving mechanism to the wheel hub 6; under the action of the driving mechanism, the wheel hub 6 can rotate relative to the air suspension assembly 1, thereby realizing the operation of the vehicle.

[0029] Reference Figure 1 As shown in the figure, the air suspension assembly 1 comprises a frame and a suspension assembly, the frame is connected above the suspension assembly, and the suspension assembly can transmit the force and torque between the frame and the axle (the transmission shaft and the driving mechanism).

[0030] The frame comprises a cross beam 11 and two longitudinal beams 12, and the cross beam 11 is connected between the two longitudinal beams 12.

[0031] The suspension assembly comprises a connecting unit and two suspension units, the two suspension units are oppositely arranged, the connecting unit is arranged between the two suspension units and is used for connecting the two suspension units together; the two suspension units are respectively located below the two longitudinal beams 12.

[0032] In the embodiments disclosed in the present application, the components, structures, connections and the like of the two suspension units are substantially the same, therefore, one of the suspension units will be described below, and the other suspension unit will not be described. The suspension unit comprises a bracket arm 21, a support 22 and an air elastic element 23. The bracket arm 21 is located below the longitudinal beam 12 and is parallel to the longitudinal beam 12, the support 22 and the air elastic element 23 are respectively arranged at two ends of the bracket arm 21, one end of the bracket arm 21 is connected to one end of the longitudinal beam 12 through the support 22, the other end of the bracket arm 21 is connected to the other end of the longitudinal beam 12 through the air elastic element 23, in the embodiments disclosed in the present application, the air elastic element 23 can be an air bag.

[0033] Reference Figure 2 As shown, the bracket arm 21 comprises a first beam segment 211, an extension segment 212 and a second beam segment 213, the first beam segment 211, the extension segment 212 and the second beam segment 213 are sequentially connected. The two suspension units each comprise one bracket arm 21, the two bracket arms 21 each comprise one second beam segment 213, and an installation space is formed between the two second beam segments 213, the installation space is used for installing a driving mechanism. The distance L2 between the two second beam segments 213 is greater than the distance L1 between the two first beam segments 211, in the embodiments disclosed in the present application, the first beam segment 211 is located directly below the longitudinal beam 12, and the second longitudinal beam 12 is located obliquely below the outside of the longitudinal beam 12. The region surrounded by the two second beam segments 213 is used as the installation space of the driving assembly, and the distance between the two second beam segments 213 is greater than the distance between the two first beam segments 211, and the extension segment 212 is used for transitioning the size change between the first beam segment 211 and the second beam segment 213, thereby the second beam segment 213 and the extension segment 212 can increase the capacity of the installation space formed between the two second beam segments 213 in the middle of the air suspension assembly 1, and the driving mechanism can be arranged in the air suspension assembly 1, thereby effectively solving the problem that the separate suspension needs to be arranged for the driving mechanism, and the vehicle needs to meet the legal width, the driving mechanism is arranged in the air suspension assembly 1, the manufacturing cost is greatly reduced, and the design and development of the vehicle are facilitated.

[0034] In the embodiments disclosed in the present application, as Figure 1As shown, the driving mechanism includes two wheel edge motors 41 and a transmission 42, which is arranged between the two wheel edge motors 41. There are two common arrangements of wheel edge motors 41 in the prior art. One is that the motor, reducer and other components are integrated with the air suspension assembly 1, in which case the wheel edge motor 41 will occupy the position of the support arm 21 in the existing air suspension assembly 1, but the wheel edge motor 41 cannot be connected to the existing air suspension assembly 1 by a U-shaped bolt. The other is to match a separate suspension for the motor, reducer and other components, which requires a large width space for the whole vehicle, basically exceeding the maximum overall width required by regulations, and at the same time, the cost of the separate suspension arranged in this way is high. The wheel edge motor 41 is arranged between the two second beam segments 213 in the present application, which can effectively avoid the above problems.

[0035] The support arm 21 of the present application is not a straight plate as a whole, but the distance between the two first beam segments 211 is set to be smaller than the distance between the two second beam segments, which can meet the requirement of the driving assembly for a larger arrangement space, and at the same time, can expand the space around the first beam segment 211 to avoid interference with the installation of other components, for example, in the design and development of the vehicle, a battery pack is arranged outside the end of the vehicle frame, and reducing the distance between the two first beam segments 211 can facilitate the installation of the battery pack.

[0036] Reference Figure 3 As shown, the first beam segment 211 and the extension segment 212 are in the form of a sheet, and the height of the first beam segment 211 and the extension segment 212 gradually increases from the end of the first beam segment 211 close to the support 22 to the end of the extension segment 212 close to the second beam segment 213 (h1 increases to h2), that is, the first beam segment 211 and the extension segment 212 at the front end of the support arm 21 adopt a structure with variable cross-section, which can reduce the deformation amount of the front end of the two support arms 21 during the up-and-down bouncing of the vehicle, and improve the torsional stiffness and torsional capacity of the vehicle.

[0037] Reference Figure 4 As shown, the support 22 includes a first support part 221, a second support part 222 and a third support part 223. The second support part 222 is connected between the first support part 221 and the third support part 223, and the first support part 221 is arranged obliquely relative to the second support part 222, extends along the direction close to the first adapter 24 and is connected with the first adapter 24; the third support part 223 is arranged obliquely relative to the second support part 222, extends along the direction close to the connection unit and is connected with the driving mechanism. Further, an installation opening is arranged at the end of the third support part 223 away from the second support part 222, which matches the outer edge of the wheel edge motor 41 of the driving mechanism, so that the wheel edge motor 41 can be connected with the support through the installation opening of the third support part 223, realizing the fixation and installation of the wheel edge motor 41.

[0038] Referring again to Figure 2 , the suspension unit further comprises a first adapter 24 and a second adapter 25. The first adapter 24 is arranged at one end of the first beam section 211 away from the second beam section 213, the first adapter 24 is movably connected with the first beam section 211 through a pin shaft, and the side of the first adapter 24 away from the support arm 21 is connected with the support member 22. The second adapter 25 is arranged at one end of the second beam section 213 away from the first beam section 211, and is used to be connected with the air elastic member 23. The second adapter 25 can adapt to air elastic members 23 of different heights, different load capacities and different models.

[0039] A connecting unit is connected between the two second beam sections 213, and the connecting unit comprises a connecting member 26 and fasteners. The connecting member 26 is arranged between the two second beam sections 213, and the fasteners are arranged between the ends of the connecting member 26 and the corresponding support arms 21. Specifically, the first end of the connecting member 26 is connected with one support arm 21 through one fastener, and the second end of the connecting member 26 is connected with the other support arm 21 through the other fastener. The fasteners are used to install the connecting member 26 between the two support arms 21. Further, taking one of the fasteners as an example, the fastener comprises a spline shaft arranged at the end of the connecting member 26 and a spline sleeve arranged at the side of the support arm 21 close to the connecting member 26. The connecting member 26 is connected with the support arm 21 through the spline shaft and the spline sleeve, the connection is reliable, and when the vehicle rolls, the torque of the two support arms 21 is transmitted through the spline structure, which can improve the roll stiffness of the air suspension assembly 1.

[0040] Referring again to Figure 3 , the horizontal distance La between the center of the first adapter 24 and the center of the connecting member 26 is greater than the horizontal distance Lb between the center of the air elastic member 23 and the center of the connecting member 26. This arrangement can reduce the stress on the front ends of the two support arms 21.

[0041] Referring to Figure 5 , the connecting member 26 comprises a first rod portion 261, a second rod portion 262 and a third rod portion 263. The second rod portion 262 is connected between the first rod portion 261 and the third rod portion 263, and the first rod portion 261 and the third rod portion 263 are arranged upwardly inclined relative to the second rod portion 262. An avoiding space is formed between the first rod portion 261, the second rod portion 262 and the third rod portion 263 towards the bracket, and the driving mechanism is at least partially accommodated in the avoiding space. Specifically, the transmission 42 of the driving mechanism is located between the two wheel-side motors 41, and the two wheel-side motors 41 are connected through the third support portion 223. The transmission 42 in the middle is accommodated in the avoiding space formed between the first rod portion 261, the second rod portion 262 and the third rod portion 263, i.e. the transmission 42 is arranged above the second rod portion 262, thereby realizing the arrangement of the entire driving mechanism in the air suspension assembly 1.

[0042] The first rod portion 261 is provided with a first accommodating cavity and a first opening a, and the third rod portion 263 is provided with a second accommodating cavity and a second opening b, the first accommodating cavity and the second accommodating cavity are both used for accommodating a transmission shaft, the first opening a is used for communicating the first accommodating cavity with an external space, and the second opening b is used for communicating the second accommodating cavity with the external space, so that the transmission shaft can be extended to the outside of the first rod portion 261 and the second rod portion 262 from the first accommodating cavity and the second accommodating cavity through the first opening a and the second opening b, and then the transmission shaft can be connected with the transmission 42 to realize power transmission.

[0043] Referring again to Figure 4 , the suspension unit further comprises a shock absorber 27, one end of the shock absorber 27 is connected with the longitudinal beam 12, and the other end of the shock absorber 27 is connected with the second beam segment 213, the shock absorber 27 can effectively reduce the vibration from the road surface, and ensure the smoothness and comfort of the vehicle driving.

[0044] The air suspension assembly 1 further comprises a rear support 31 and a transverse thrust rod 32. One end of the rear support 31 is connected with the cross beam 11, and the other end of the rear support 31 is provided with a mounting port matched with the outer edge of the transmission 42, so that the transmission 42 can be connected with the cross beam 11 of the vehicle frame through the mounting port of the rear support 31, realizing the fixing and installation of the transmission 42. One end of the transverse thrust rod 32 is connected with the rear support 31, and the other end of the transverse thrust rod 32 is connected with the connecting piece 26, which is horizontally arranged in the full load state, so that the transverse thrust rod 32 is only subjected to horizontal force in the full load state, and the transverse thrust rod 32 can reduce the lateral force in the up-and-down jumping process of the wheel. The transmission 42 and the transverse thrust rod 32 of the present application are connected with the cross beam 11 of the vehicle frame through the rear support 31, so that the torque can be transmitted to the cross beam 11 through the rear support 31, and then the force transmission between the vehicle frame and the axle is realized.

[0045] In the embodiment disclosed by the present application, the air suspension assembly 1 provides a connection interface and a mounting space for the driving mechanism, that is, the driving mechanism can be arranged between the two second beam segments 213 and mounted on the support through the support 22 and the rear support 31 to realize force transmission, effectively optimizing the spatial arrangement of the air suspension assembly 1.

[0046] The air suspension assembly 1 further comprises an end pipe 34, which is arranged on the side of the bracket 21 away from the connecting unit, and the end pipe 34 is connected with the connecting piece 26, and the end pipe 34 is used for connecting with the wheel hub 6.

[0047] In some embodiments, the air suspension assembly 1 further comprises a flange plate 33 arranged on the side of the support arm 21 away from the connecting unit, the flange plate 33 is located between the connecting piece 26 and an end pipe 34, the flange plate 33 and the end pipe 34 can be integrated into the support arm 21 by casting or welding, and the flange plate 33 is used to connect with the brake. Further, the flange plate 33 and the end pipe 34 are hollow structures, and the inside of the flange plate 33 and the end pipe 34 is used to accommodate the transmission shaft.

[0048] In combination with Figure 6 、 Figure 7 As shown in the drawings, in the embodiments disclosed in the present application, the transmission shaft comprises a first transmission shaft 51, a second transmission shaft 52, a third transmission shaft and a fourth transmission shaft 53, the first transmission shaft 51 is accommodated in the first accommodating cavity and extends out from the first opening a, the second transmission shaft 52 is accommodated in the second accommodating cavity and extends out from the second opening b, and the transmission 42 is connected between the first transmission shaft 51 and the second transmission shaft 52. The end of the first transmission shaft 51 away from the transmission 42 is drivingly connected with the third transmission shaft through a universal joint, the third transmission shaft is accommodated in the inside of the end pipe 34, the end of the third transmission shaft away from the first transmission shaft protrudes out of the end pipe 34 and is connected with the hub 6 through a bolt; the end of the second transmission shaft 52 away from the transmission 42 is drivingly connected with the fourth transmission shaft 53 through a universal joint, the fourth transmission shaft 53 is accommodated in the inside of the other end pipe 34, the end of the fourth transmission shaft 53 away from the second transmission shaft 52 protrudes out of the end pipe 34 and is connected with the hub 6 on the other side through a bolt, and the hubs 6 on both sides are rotatable around the end pipe 34 through bearings.

[0049] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless specifically defined otherwise, if there is an expression "on" or "under" or similar, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0051] It should be noted that if an element is referred to as being "fixed" or "attached" to another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements can be present. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions as used herein are for purposes of explanation only and are not intended to be limiting.

[0052] The technical features of the above-described embodiments can be combined in any manner, and in order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered to be within the scope of the present disclosure.

[0053] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An air suspension assembly, characterized by, The air suspension assembly comprises a frame, a suspension assembly, and a connecting unit. The suspension assembly comprises two oppositely arranged suspension units and a connecting unit connected between the two suspension units. Each suspension unit comprises a support, an air spring, and a bracket. The bracket is connected to one end of the frame via the support and to the other end of the frame via the air spring. Each bracket comprises a first beam segment and a second beam segment connected to each other. The second beam segments form an installation space between them for installing a driving mechanism. The distance between the second beam segments is greater than the distance between the first beam segments. The connecting unit comprises a connecting piece and fasteners.

2. The air suspension assembly of claim 1, wherein, The connecting piece is arranged between the two brackets.

3. The air suspension assembly of claim 2, wherein, The fasteners are arranged between the ends of the connecting piece and the corresponding brackets.

4. The air suspension assembly of claim 1, wherein, The connecting piece comprises a first rod portion, a second rod portion, and a third rod portion.

5. The air suspension assembly of claim 4, wherein, The second rod portion is connected between the first rod portion and the third rod portion.

6. The air suspension assembly of any one of claims 1-5, wherein, The first rod portion and the third rod portion are inclined relative to the second rod portion.

7. A vehicle characterized by comprising: The first rod portion, the second rod portion, and the third rod portion form an avoiding space towards the frame. The first rod portion is provided with a first accommodating cavity and a first opening. The third rod portion is provided with a second accommodating cavity and a second opening. The first accommodating cavity and the second accommodating cavity are used for accommodating a transmission shaft. The first opening is used for connecting the first accommodating cavity with an external space. The second opening is used for connecting the second accommodating cavity with an external space. The transmission shaft can extend out of the first rod portion and the second rod portion through the first opening and the second opening. The transmission shaft can be connected with a transmission of the driving mechanism to realize power transmission. Each suspension unit further comprises a first adapter and a second adapter. The end of the first beam segment away from the second beam segment is movably connected with the support via the first adapter. The end of the second beam segment away from the first beam segment is connected with the air spring via the second adapter. The connecting unit is connected between the two second beam segments. The distance between the first adapter and the connecting unit is greater than the distance between the air spring and the connecting unit. Each bracket further comprises an extension segment connected between the first beam segment and the second beam segment. The height of the first beam segment and the extension segment gradually increases from the end of the first beam segment close to the support to the end of the extension segment close to the second beam segment. The air suspension assembly further comprises an end pipe arranged on the side of the bracket away from the connecting unit. The end pipe is used for being connected with a hub. The transmission shaft, the driving mechanism connected with the transmission shaft for driving the transmission shaft to rotate, and the air suspension assembly are provided. The air suspension assembly of any one of claims 1-6, wherein the drive shaft and the drive mechanism are disposed between the two second beam segments.

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