Suspension system and vehicle with same

Abstract

The utility model discloses a suspension system and a vehicle with the same. Belongs to the technical field of vehicles and comprises a left middle support, a right middle support, a left front air suspension assembly, a left rear air suspension assembly, a right front air suspension assembly, a right rear air suspension assembly and a lifting air suspension assembly which are suitable for being connected with a frame of the vehicle. The left front air suspension assembly, the right front air suspension assembly and the lifting air suspension assembly are suitable for being connected with an electric drive middle axle of the vehicle, and the left rear air suspension assembly and the right rear air suspension assembly are suitable for being connected with an electric drive rear axle of the vehicle. At least part of the lifting air suspension assembly is located between the left front air suspension assembly and the right front air suspension assembly, the lifting air suspension assembly can be arranged between the electrically-driven middle axle and the electrically-driven rear axle, the space between the electrically-driven middle axle and the electrically-driven rear axle can be fully utilized, the miniaturization design of the suspension system can be achieved, and the service life of the suspension system is prolonged. And the occupied space of the suspension system can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to a suspension system and a vehicle having the same. Background Technology

[0002] In related technologies, a drive shaft needs to be arranged between the middle axle and the rear axle of a fuel vehicle to achieve power transmission, which occupies the space between the middle axle and the rear axle. In order to avoid the drive shaft, the airbag assembly used to lift the rear axle in the suspension system is usually arranged behind the rear axle, resulting in a large space occupied by the suspension system and increasing the difficulty of arranging the suspension system. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a suspension system that enables miniaturized design and reduces the complexity of suspension system layout.

[0004] This utility model also proposes a vehicle having the above-mentioned suspension system.

[0005] A suspension system according to an embodiment of the present invention includes: a left center bracket, a right center bracket, a left front air suspension assembly, a left rear air suspension assembly, a right front air suspension assembly, a right rear air suspension assembly, and a lift air suspension assembly, all adapted to be connected to a vehicle frame. In the width direction of the vehicle, the left center bracket and the right center bracket are positioned opposite each other and spaced apart. In the length direction of the vehicle, the left front air suspension assembly is connected to the front side of the left center bracket, and the left rear air suspension assembly is connected to the rear side of the left center bracket. In the length direction of the vehicle, the right front air suspension assembly is connected to the front side of the right center bracket, and the right rear air suspension assembly is connected to the right center bracket. The rear side of the frame; in the width direction of the vehicle, at least a portion of the lift air suspension assembly is located between the left front air suspension assembly and the right front air suspension assembly; wherein the left front air suspension assembly, the right front air suspension assembly, and the lift air suspension assembly are all adapted to be connected to the electric drive center axle of the vehicle, the left rear air suspension assembly and the right rear air suspension assembly are all adapted to be connected to the electric drive rear axle of the vehicle, in the height direction of the vehicle, the left front air suspension assembly, the left rear air suspension assembly, the right front air suspension assembly, and the right rear air suspension assembly are all adapted to adjust the height of the frame, and the lift air suspension assembly is adapted to adjust the height of the electric drive center axle.

[0006] According to the embodiment of the present invention, the suspension system is applied to a new energy electric vehicle. In the width direction of the vehicle, at least a portion of the lift air suspension assembly of the suspension system is located between the left front air suspension assembly and the right front air suspension assembly. The lift air suspension assembly can be arranged between the electric drive middle axle and the electric drive rear axle, which can make full use of the space between the electric drive middle axle and the electric drive rear axle, which is conducive to realizing the miniaturization design of the suspension system, reducing the space occupied by the suspension system, and facilitating the arrangement of the suspension system.

[0007] According to some embodiments of the present invention, the lifting air suspension assembly includes: a mounting bracket, a lifting airbag, and a lifting bracket. The mounting bracket is adapted to be connected to the vehicle frame and has a mounting groove. The lifting airbag is installed in the mounting groove. One end of the lifting bracket is connected to the lifting airbag, and the other end of the lifting bracket is adapted to be connected to the electric drive axle. The lifting airbag adjusts the height of the electric drive axle by controlling the height of the lifting bracket.

[0008] According to some embodiments of the present invention, the left front air suspension assembly includes: a left front trailing arm bracket, a left front thrust rod, a left front shock absorber, a first load-bearing airbag, and a second load-bearing airbag. The left front shock absorber is adapted to be connected between the left front trailing arm bracket and the vehicle frame. The front end of the left front trailing arm bracket is adapted to be connected to the vehicle frame via the first load-bearing airbag, and the rear end of the left front trailing arm bracket is adapted to be connected to the vehicle frame via the second load-bearing airbag. The front end of the left front thrust rod is hinged to the left front trailing arm bracket, and the rear end of the left front thrust rod is hinged to the left front air suspension assembly. The middle support is hinged; the right front air suspension assembly includes: a right front trailing arm support, a right front thrust rod, a right front shock absorber, a third load-bearing airbag and a fourth load-bearing airbag, the right front shock absorber is adapted to be connected between the right front trailing arm support and the vehicle frame, the front end of the right front trailing arm support is adapted to be connected to the vehicle frame through the third load-bearing airbag, the rear end of the right front trailing arm support is adapted to be connected to the vehicle frame through the fourth load-bearing airbag, the front end of the right front thrust rod is hinged to the right front trailing arm support, and the rear end of the right front thrust rod is hinged to the right middle support.

[0009] According to some embodiments of the present invention, the suspension system further includes a front stabilizer bar, both ends of which are adapted to be connected to the vehicle frame, and the front stabilizer bar passes through the left front trailing arm bracket and the right front trailing arm bracket.

[0010] According to some embodiments of the present invention, the left rear air suspension assembly includes: a left rear trailing arm bracket, a left rear thrust rod, a left rear shock absorber, a fifth load-bearing airbag, and a sixth load-bearing airbag. The left rear shock absorber is adapted to be connected between the left rear trailing arm bracket and the vehicle frame. The front end of the left rear trailing arm bracket is adapted to be connected to the vehicle frame via the fifth load-bearing airbag, and the rear end of the left rear trailing arm bracket is adapted to be connected to the vehicle frame via the sixth load-bearing airbag. The front end of the left rear thrust rod is hinged to the left center bracket, and the rear end of the left rear thrust rod is hinged to the left rear center bracket. The right rear air suspension assembly includes: a right rear trailing arm bracket, a right rear thrust rod, a right rear shock absorber, a seventh load-bearing airbag, and an eighth load-bearing airbag. The right rear shock absorber is adapted to be connected between the left rear trailing arm bracket and the vehicle frame. The front end of the right rear trailing arm bracket is adapted to be connected to the vehicle frame via the seventh load-bearing airbag, and the rear end of the right rear trailing arm bracket is adapted to be connected to the vehicle frame via the eighth load-bearing airbag. The front end of the right rear thrust rod is hinged to the right center bracket, and the rear end of the right rear thrust rod is hinged to the right rear trailing arm bracket.

[0011] According to some embodiments of the present invention, the suspension system further includes a rear stabilizer bar, both ends of which are adapted to be connected to the vehicle frame, and the rear stabilizer bar passes through the left rear support arm bracket and the right rear support arm bracket.

[0012] According to some embodiments of the present invention, the suspension system further includes a front buffer block and a rear buffer block, wherein the front buffer block is adapted to be disposed directly above the electric drive middle axle and connected to the vehicle frame, and the rear buffer block is adapted to be disposed directly above the electric drive rear axle and connected to the vehicle frame.

[0013] According to some embodiments of the present invention, the suspension system further includes: a left height sensor and a right height sensor, wherein the left height sensor is adapted to detect the height of the left side of the vehicle frame; and the right height sensor is adapted to detect the height of the right side of the vehicle frame.

[0014] According to some embodiments of the present invention, the left height sensor includes: a left swing arm and a left corner detector. The left corner detector is fixed to the left side of the vehicle frame. One end of the left swing arm is adapted to be hinged to the left end of the electric drive rear axle, and the other end of the left swing arm is hinged to the left corner detector. The left corner detector obtains the height of the left side of the vehicle frame by detecting the corner of the left swing arm. The right height sensor includes: a right swing arm and a right corner detector. The right corner detector is fixed to the right side of the vehicle frame. One end of the right swing arm is adapted to be hinged to the right end of the electric drive rear axle, and the other end of the right swing arm is hinged to the right corner detector. The right corner detector obtains the height of the right side of the vehicle frame by detecting the corner of the right swing arm.

[0015] According to another embodiment of the present invention, a vehicle includes the suspension system described above.

[0016] According to the vehicle of the present invention, in the width direction of the vehicle, at least a portion of the lift air suspension assembly of the suspension system is located between the left front air suspension assembly and the right front air suspension assembly. The lift air suspension assembly can be arranged between the electric drive middle axle and the electric drive rear axle, which can make full use of the space between the electric drive middle axle and the electric drive rear axle, which is conducive to realizing the miniaturization design of the suspension system, reducing the space occupied by the suspension system, and facilitating the arrangement of the suspension system.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 The suspension system and the cast crossbeam of the frame according to the embodiments of this utility model are three-dimensional Figure 1 ;

[0019] Figure 2 The suspension system and the cast crossbeam of the frame according to the embodiments of this utility model are three-dimensional Figure 2 ;

[0020] Figure 3 The suspension system and the cast crossbeam of the frame according to the embodiments of this utility model are three-dimensional Figure 3 .

[0021] Figure label:

[0022] Left center support 1; Right center support 2;

[0023] Left front air suspension assembly 3; left front trailing arm bracket 31; left front thrust rod 32; left front shock absorber 33; first load-bearing airbag 34; second load-bearing airbag 35;

[0024] Left rear air suspension assembly 4; left rear trailing arm bracket 41; left rear thrust rod 42; left rear shock absorber 43; fifth load-bearing airbag 44; sixth load-bearing airbag 45;

[0025] Right front air suspension assembly 5; right front trailing arm bracket 51; right front thrust rod 52; right front shock absorber 53; third load-bearing airbag 54; fourth load-bearing airbag 55;

[0026] Right rear air suspension assembly 6; right rear trailing arm bracket 61; right rear shock absorber 62; seventh load-bearing airbag 63; eighth load-bearing airbag 64;

[0027] Lift air suspension assembly 7; mounting bracket 71; mounting slot 711; lift airbag 72; lift bracket 73;

[0028] Front stabilizer bar 8; Front stabilizer bar bracket 9; Rear stabilizer bar 10; Rear stabilizer bar bracket 20; Front bumper 30; Rear bumper 40;

[0029] Left height sensor 50; left swing arm 501; left turn angle detector 502;

[0030] Right height sensor 60; right swing arm 601; right corner detector 602;

[0031] Front V-shaped thrust rod 70; Rear V-shaped thrust rod 80; Suspension system 100; Cast crossbeam 200. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The following is combined Figures 1-3 A detailed description is given of a suspension system 100 and a vehicle having the same according to an embodiment of the present invention.

[0037] Reference Figures 1-3 As shown, the suspension system 100 according to an embodiment of the present invention includes: a left center bracket 1, a right center bracket 2, a left front air suspension assembly 3, a left rear air suspension assembly 4, a right front air suspension assembly 5, a right rear air suspension assembly 6, and a lift air suspension assembly 7, adapted to be connected to the vehicle frame. In the width direction of the vehicle, that is... Figures 1-3 In the left-right direction, the left middle bracket 1 and the right middle bracket 2 are positioned opposite each other and spaced apart, along the length of the vehicle. Figures 1-3 In the front-rear direction, the left front air suspension assembly 3 is connected to the front side of the left center bracket 1, and the left rear air suspension assembly 4 is connected to the rear side of the left center bracket 1. In the length direction of the vehicle, the right front air suspension assembly 5 is connected to the front side of the right center bracket 2, and the right rear air suspension assembly 6 is connected to the rear side of the right center bracket 2. In the width direction of the vehicle, at least a portion of the lift air suspension assembly 7 is located between the left front air suspension assembly 3 and the right front air suspension assembly 5.

[0038] Among them, the left front air suspension assembly 3, the right front air suspension assembly 5, and the lift air suspension assembly 7 are all suitable for connection to the vehicle's electric drive middle axle, and the left rear air suspension assembly 4 and the right rear air suspension assembly 6 are both suitable for connection to the vehicle's electric drive rear axle, in the vehicle's height direction, that is... Figures 1-3 In the vertical direction, the left front air suspension assembly 3, the left rear air suspension assembly 4, the right front air suspension assembly 5, and the right rear air suspension assembly 6 are all suitable for adjusting the height of the vehicle frame, while the lift air suspension assembly 7 is suitable for adjusting the height of the electric drive center axle.

[0039] Understandably, the left front air suspension assembly 3 and the left rear air suspension assembly 4 are connected to the front and rear sides of the left center bracket 1, respectively. The left front air suspension assembly 3 and the left rear air suspension assembly 4 can jointly adjust the height of the left side of the vehicle frame. The right front air suspension assembly 5 and the right rear air suspension assembly 6 are connected to the front and rear sides of the right center bracket 2, respectively. The right front air suspension assembly 5 can jointly adjust the height of the right side of the vehicle frame. Through the left front air suspension assembly 3, the left rear air suspension assembly 4, the right front air suspension assembly 5, and the right rear air suspension assembly... The coordinated adjustment of component 6 facilitates the leveling of the chassis during vehicle movement, reducing the risk of chassis tilt and improving vehicle roll stability. Furthermore, the left front air suspension component 3, left rear air suspension component 4, right front air suspension component 5, and right rear air suspension component 6 can jointly support the chassis, distributing the load on the chassis and providing stable and reliable support. This helps maintain the vehicle's height during movement. Additionally, when the vehicle is a tractor, raising the chassis height facilitates the smooth detachment of the cargo box.

[0040] The air suspension assembly 7 is adapted to adjust the height of the electric drive axle. When the vehicle is driving unloaded, the height of the electric drive axle can be increased by raising the air suspension assembly 7, which can separate the wheels connected to the electric drive axle from the ground. The electric drive axle does not participate in driving the vehicle, which can effectively reduce the vehicle's energy consumption and help improve the vehicle's range. Compared with raising the electric drive rear axle, raising the electric drive axle allows the suspension system 100 to evenly bear the weight of the frame in the length direction, which helps improve the vehicle's stability.

[0041] In the width direction of the vehicle, at least a portion of the lift air suspension assembly 7 is located between the left front air suspension assembly 3 and the right front air suspension assembly 5. The lift air suspension assembly 7 can be positioned in front of the electric drive axle, or it can be positioned between the electric drive axle and the electric drive front axle. The arrangement of the lift air suspension assembly 7 is quite flexible. (Refer to...) Figures 1-3 As shown, when the lifting air suspension assembly 7 is installed between the electric drive middle axle and the electric drive front axle, the lifting air suspension assembly 7 can make full use of the space between the electric drive middle axle and the electric drive rear axle, which is conducive to realizing the miniaturization design of the suspension system 100, reducing the space occupied by the suspension system 100, and facilitating the arrangement of the suspension system 100.

[0042] According to the embodiment of the present utility model, the suspension system 100 is applied to a new energy electric vehicle. In the width direction of the vehicle, at least a portion of the lift air suspension assembly 7 of the suspension system 100 is located between the left front air suspension assembly 3 and the right front air suspension assembly 5. The lift air suspension assembly 7 can be arranged between the electric drive middle axle and the electric drive rear axle, which can make full use of the space between the electric drive middle axle and the electric drive rear axle, which is conducive to realizing the miniaturization design of the suspension system 100, reducing the space occupied by the suspension system 100, and facilitating the arrangement of the suspension system 100.

[0043] In some embodiments of this utility model, reference is made to Figure 3 As shown, the lift air suspension assembly 7 includes: a mounting bracket 71, a lift airbag 72, and a lift bracket 73. The mounting bracket 71 is adapted to be connected to the vehicle frame and has a mounting groove 711. The lift airbag 72 is installed in the mounting groove 711. One end of the lift bracket 73 is connected to the lift airbag 72, and the other end of the lift bracket 73 is adapted to be connected to the electric drive axle. The lift airbag 72 adjusts the height of the electric drive axle by controlling the height of the lift bracket 73. The structure of the lift air suspension assembly 7 is simple.

[0044] Understandably, the mounting bracket 71 is used to fix the lifting airbag 72 to the vehicle frame. The vehicle frame can provide reliable support for the lifting airbag 72 through the mounting bracket 71. The lifting bracket 73 is suitable for transmitting the driving force applied by the lifting airbag 72 to the electric drive axle. The height of the electric drive axle can be adjusted by inflating and deflating the lifting airbag 72. Specifically, when the lifting airbag 72 is inflated, the lifting airbag 72 can drive the lifting bracket 73 to rise, and the lifting bracket 73 can drive the electric drive axle to rise. When the lifting airbag 72 is deflated, the lifting airbag 72 can drive the lifting bracket 73 to fall, and the lifting bracket 73 can drive the electric drive axle to fall. The height adjustment method of the electric drive axle is simple and easy to implement.

[0045] Reference Figure 3 As shown, the mounting bracket 71 is constructed as a "U"-shaped bracket. The two ends of the mounting bracket 71 are connected to the left and right sides of the vehicle frame, respectively. The "U"-shaped mounting bracket 71 has good bending and torsional resistance, which is conducive to the stable and reliable support of the lifting airbag 72 by the mounting bracket 71. It can realize the stable installation of the lifting airbag 72, so as to facilitate the stable and reliable adjustment of the height of the electric drive axle by the lifting airbag 72.

[0046] In some embodiments of this utility model, reference is made to Figure 1 As shown, the left front air suspension assembly 3 includes: a left front trailing arm bracket 31, a left front thrust rod 32, a left front shock absorber 33, a first load-bearing airbag 34, and a second load-bearing airbag 35. The left front shock absorber 33 is adapted to be connected between the left front trailing arm bracket 31 and the vehicle frame. The front end of the left front trailing arm bracket 31 is adapted to be connected to the vehicle frame through the first load-bearing airbag 34, and the rear end of the left front trailing arm bracket 31 is adapted to be connected to the vehicle frame through the second load-bearing airbag 35. The front end of the left front thrust rod 32 is hinged to the left front trailing arm bracket 31, and the rear end of the left front thrust rod 32 is hinged to the left middle bracket 1.

[0047] The right front air suspension assembly 5 includes: a right front trailing arm bracket 51, a right front thrust rod 52, a right front shock absorber 53, a third load-bearing airbag 54, and a fourth load-bearing airbag 55. The right front shock absorber 53 is adapted to be connected between the right front trailing arm bracket 51 and the vehicle frame. The front end of the right front trailing arm bracket 51 is adapted to be connected to the vehicle frame via the third load-bearing airbag 54, and the rear end of the right front trailing arm bracket 51 is adapted to be connected to the vehicle frame via the fourth load-bearing airbag 55. The front end of the right front thrust rod 52 is hinged to the right front trailing arm bracket 51, and the rear end of the right front thrust rod 52 is hinged to the right center bracket 2.

[0048] Understandably, the left front shock absorber 33 and the right front shock absorber 53 absorb vibrations and impacts between the suspension system 100 and the vehicle frame, which helps to enhance vehicle stability and improve ride comfort. The left front thrust rod 32 is hinged between the left front trailing arm bracket 31 and the left middle bracket 1, and the right front thrust rod 52 is hinged between the right front trailing arm bracket 51 and the right middle bracket 2. Both the left front thrust rod 32 and the right front thrust rod 52 can transmit force and control the vehicle's motion posture, which helps to further enhance vehicle stability. The left front shock absorber 33 and the right front shock absorber 53 can be hydraulic or pneumatic shock absorbers.

[0049] It should be noted that the left front trailing arm bracket 31 can be installed on the electric drive axle with fasteners, connecting the left front air suspension assembly 3 to the electric drive axle. Similarly, the right front trailing arm bracket 51 can be installed on the electric drive axle with fasteners, connecting the right front air suspension assembly 5 to the electric drive axle. Both the left and right front trailing arm brackets 31 and 51 can transfer the load of the vehicle frame from the airbags to the axle. In other words, the electric drive axle indirectly bears the load of the vehicle frame. Specifically, the electric drive axle supports the left and right front trailing arm brackets 31 and 51. The left front trailing arm bracket 31 supports the first load-bearing airbag 34 and the second load-bearing airbag 35, while the right front trailing arm bracket 51 supports the third load-bearing airbag 54 and the fourth load-bearing airbag 55. The first, second, and third load-bearing airbags 34 and 35 together support the vehicle frame, providing reliable support. U-bolts can be used as fasteners.

[0050] In some embodiments of this utility model, reference is made to Figures 1-3 As shown, the suspension system 100 also includes a front stabilizer bar 8, both ends of which are adapted to be connected to the vehicle frame. The front stabilizer bar 8 passes through the left front trailing arm bracket 31 and the right front trailing arm bracket 51. The vehicle frame, the front stabilizer bar 8, the left front trailing arm bracket 31 and the right front trailing arm bracket 51 can form a continuous force transmission structure, which can effectively improve the lateral stiffness of the whole vehicle and help maintain the stability of the whole vehicle.

[0051] The front stabilizer bar 8 is constructed as a "U"-shaped bar, which has good bending and torsional resistance. The suspension system 100 also includes two front stabilizer bar brackets 9, and the two ends of the front stabilizer bar 8 are indirectly connected to the vehicle frame through the two front stabilizer bar brackets 9 respectively.

[0052] In some embodiments of this utility model, reference is made to Figure 1As shown, the left rear air suspension assembly 4 includes: a left rear trailing arm bracket 41, a left rear thrust rod 42, a left rear shock absorber 43, a fifth load-bearing airbag 44, and a sixth load-bearing airbag 45. The left rear shock absorber 43 is adapted to be connected between the left rear trailing arm bracket 41 and the vehicle frame. The front end of the left rear trailing arm bracket 41 is adapted to be connected to the vehicle frame via the fifth load-bearing airbag 44, and the rear end of the left rear trailing arm bracket 41 is adapted to be connected to the vehicle frame via the sixth load-bearing airbag 45. The front end of the left rear thrust rod 42 is hinged to the left middle bracket 1, and the rear end of the left rear thrust rod 42 is hinged to the left rear trailing arm bracket 41.

[0053] The right rear air suspension assembly 6 includes: a right rear trailing arm bracket 61, a right rear thrust rod, a right rear shock absorber 62, a seventh load-bearing airbag 63, and an eighth load-bearing airbag 64. The right rear shock absorber 62 is adapted to be connected between the left rear trailing arm bracket 41 and the vehicle frame. The front end of the right rear trailing arm bracket 61 is adapted to be connected to the vehicle frame via the seventh load-bearing airbag 63, and the rear end of the right rear trailing arm bracket 61 is adapted to be connected to the vehicle frame via the eighth load-bearing airbag 64. The front end of the right rear thrust rod is hinged to the right middle bracket 2, and the rear end of the right rear thrust rod is hinged to the right rear trailing arm bracket 61.

[0054] Understandably, the left rear shock absorber 43 and the right rear shock absorber 62 absorb vibrations and impacts between the suspension system 100 and the vehicle frame, which helps to enhance vehicle stability and improve ride comfort. The left rear thrust rod 42 is hinged between the left rear support arm bracket 41 and the left intermediate bracket 1, and the right rear thrust rod is hinged between the right rear support arm bracket 61 and the right intermediate bracket 2. The left rear thrust rod 42 and the right rear thrust rod can transmit force and control the vehicle's motion posture, which helps to further enhance vehicle stability. The left rear shock absorber 43 and the right rear shock absorber 62 can be hydraulic shock absorbers or air-filled shock absorbers.

[0055] It should be noted that the left rear trailing arm bracket 41 can be installed on the electric drive rear axle with fasteners, thereby connecting the left rear air suspension assembly 4 to the electric drive rear axle. The right rear trailing arm bracket 61 can be installed on the electric drive middle axle with fasteners, thereby connecting the right rear air suspension assembly 6 to the electric drive rear axle. Both the left rear trailing arm bracket 41 and the right rear trailing arm bracket 61 can transfer the load of the vehicle frame from the airbags to the axle. In other words, the electric drive rear axle indirectly bears the load of the vehicle frame. Specifically, the electric drive rear axle supports the left rear trailing arm bracket 41 and the right rear trailing arm bracket 61. The left rear trailing arm bracket 41 supports the fifth load-bearing airbag 44 and the sixth load-bearing airbag 45, and the right rear trailing arm bracket 61 supports the seventh load-bearing airbag 63 and the eighth load-bearing airbag 64. The fifth load-bearing airbag 44, the sixth load-bearing airbag 45, the seventh load-bearing airbag 63, and the eighth load-bearing airbag 64 together support the vehicle frame, providing reliable support for the vehicle frame.

[0056] In some embodiments of this utility model, reference is made to Figures 1-3As shown, the suspension system 100 also includes a rear stabilizer bar 10, both ends of which are adapted to be connected to the vehicle frame. The rear stabilizer bar 10 passes through the left rear trailing arm bracket 41 and the right rear trailing arm bracket 61. The vehicle frame, the rear stabilizer bar 10, the left rear trailing arm bracket 41 and the right rear trailing arm bracket 61 can form a continuous force transmission structure, which can effectively improve the lateral stiffness of the whole vehicle and help maintain the stability of the whole vehicle.

[0057] The rear stabilizer bar 10 is constructed as a "U"-shaped bar, which has good bending and torsional resistance. The suspension system 100 also includes two rear stabilizer bar brackets 20, and the two ends of the rear stabilizer bar 10 are indirectly connected to the vehicle frame through the two rear stabilizer bar brackets 20 respectively.

[0058] In some embodiments of this utility model, reference is made to Figures 1-3 As shown, the suspension system 100 also includes a front buffer block 30 and a rear buffer block 40. The front buffer block 30 is adapted to be positioned directly above the electric drive axle and connected to the vehicle frame, and the rear buffer block 40 is adapted to be positioned directly above the electric drive rear axle and connected to the vehicle frame. The front buffer block 30 can limit the upward movement of the electric drive axle to restrict its upward travel. When the electric drive axle moves upward and abuts against the front buffer block 30, the front buffer block 30 can prevent the electric drive axle from moving upward further, thus avoiding a large upward travel and reducing the risk of impact on the pipes and wiring connected to the electric drive axle. The rear buffer block 40 can limit the upward movement of the electric drive rear axle to restrict its upward travel. When the electric drive rear axle moves upward and abuts against the rear buffer block 40, the rear buffer block 40 can prevent the electric drive rear axle from moving upward further, thus avoiding a large upward travel and reducing the risk of impact on the pipes and wiring connected to the electric drive rear axle. This helps to improve the stability of the vehicle during driving.

[0059] Reference Figure 2 As shown, there are two front buffer blocks 30 and two rear buffer blocks 40. The two front buffer blocks 30 are connected to the left and right sides of the frame respectively to limit the upward movement of the left and right sides of the electric drive axle, so as to avoid excessive upward movement on one side of the electric drive axle and effectively reduce the risk of impact to the pipes and lines connected to the electric drive axle. The two rear buffer blocks 40 are connected to the left and right sides of the frame respectively to limit the upward movement of the left and right sides of the electric drive rear axle, so as to avoid excessive upward movement on one side of the electric drive rear axle and effectively reduce the risk of impact to the pipes and lines connected to the electric drive rear axle.

[0060] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2As shown, the suspension system 100 also includes a left height sensor 50 and a right height sensor 60. The left height sensor 50 is adapted to detect the height of the left side of the frame, and the right height sensor 60 is adapted to detect the height of the right side of the frame. It can be understood that the left height sensor 50 and the right height sensor 60 can simultaneously detect the height of the left and right sides of the frame, so as to accurately adjust the frame to a level state, reduce the risk of frame tilt, and help improve the vehicle's roll stability.

[0061] Both the left height sensor 50 and the right height sensor 60 can communicate with the vehicle's ECU. The left height sensor 50 and the right height sensor 60 can transmit the height signals of the left and right sides of the frame to the ECU respectively. When the heights of the left and right sides of the frame are inconsistent, the ECU can adjust the height of the left side of the frame by controlling the first load-bearing airbag 34, the second load-bearing airbag 35, the third load-bearing airbag 54 and the fourth load-bearing airbag 55. The ECU can adjust the height of the right side of the frame by controlling the fifth load-bearing airbag 44, the sixth load-bearing airbag 45, the seventh load-bearing airbag 63 and the eighth load-bearing airbag 64, so as to accurately adjust the frame to a level state.

[0062] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 As shown, the left height sensor 50 includes a left swing arm 501 and a left corner detector 502. The left corner detector 502 is fixed to the left side of the vehicle frame. One end of the left swing arm 501 is adapted to be hinged to the left end of the electric drive rear axle, and the other end of the left swing arm 501 is hinged to the left corner detector 502. The left corner detector 502 obtains the height of the left side of the vehicle frame by detecting the corner of the left swing arm 501. The right height sensor 60 includes a right swing arm 601 and a right corner detector 602. The right corner detector 602 is fixed to the right side of the vehicle frame. One end of the right swing arm 601 is adapted to be hinged to the right end of the electric drive rear axle, and the other end of the right swing arm 601 is hinged to the right corner detector 602. The right corner detector 602 obtains the height of the right side of the vehicle frame by detecting the corner of the right swing arm 601.

[0063] Understandably, when the chassis is raised and lowered, the chassis moves relative to the electric drive rear axle. The left side of the chassis and the left corner detector 502 are raised and lowered synchronously. The left corner detector 502 can synchronously drive the left swing arm 501 to rotate. That is to say, the left side of the chassis, the left corner detector 502, and the left swing arm 501 move synchronously. The left corner detector 502 can obtain the height of the left side of the chassis in real time by detecting the angle of the left swing arm 501. The right side of the chassis and the right corner detector 602 are raised and lowered synchronously. The right corner detector 602 can drive the right swing arm 601 to rotate. That is to say, the right side of the chassis, the right corner detector 602, and the right swing arm 601 move synchronously. The right corner detector 602 can obtain the height of the right side of the chassis in real time by detecting the angle of the right swing arm 601. The left height sensor 50 and the right height sensor 60 have a fast response speed and can measure the height of the left and right sides of the chassis in time, so as to adjust the chassis to a level state in time, reduce the risk of chassis tilt, and improve the vehicle's roll stability.

[0064] In some other embodiments of this utility model, both the left height sensor 50 and the right height sensor 60 can be laser rangefinder sensors. The left height sensor 50 can be fixed on the left side of the frame and located directly above the electric drive axle, and the right height sensor 60 can be fixed on the right side of the frame and located directly above the electric drive rear axle. The left height sensor 50 obtains the height of the left side of the frame by detecting the distance between the left side of the frame and the electric drive rear axle, and the right height sensor 60 obtains the height of the right side of the frame by detecting the distance between the right side of the frame and the electric drive rear axle. The laser rangefinder sensor has high accuracy, so as to accurately measure the height of the left and right sides of the frame.

[0065] In some embodiments of this utility model, reference is made to Figure 1 As shown, the suspension system 100 also includes a front V-shaped thrust rod 70 and a rear V-shaped thrust rod 80. Both the front V-shaped thrust rod 70 and the rear V-shaped thrust rod 80 include two connected control arms. One end of the two control arms of the front V-shaped thrust rod 70 is hinged to the electric drive axle, and the other end is hinged to the cast crossbeam 200 of the frame. One end of the two control arms of the rear V-shaped thrust rod 80 is hinged to the electric drive rear axle, and the other end is hinged to the cast crossbeam 200 of the frame. Both the front V-shaped thrust rod 70 and the rear V-shaped thrust rod 80 can transmit force and control the vehicle's motion posture, which helps to enhance the stability of the vehicle.

[0066] In this embodiment, when the vehicle is loaded and driving, the lift airbag 72 does not operate. The first load-bearing airbag 34, the second load-bearing airbag 35, the third load-bearing airbag 54, the fourth load-bearing airbag 55, the fifth load-bearing airbag 44, the sixth load-bearing airbag 45, the seventh load-bearing airbag 63, and the eighth load-bearing airbag 64 jointly support the vehicle frame. The electric drive middle axle and the electric drive rear axle jointly drive the vehicle. The left height sensor 50 and the right height sensor 60 monitor the height of the left and right sides of the vehicle frame in real time to ensure that the vehicle travels at the normal height. When the vehicle is unloaded, the lift airbag 72 can lift the electric drive middle axle. The first load-bearing airbag 34, the second load-bearing airbag 35, the third load-bearing airbag 54, and the fourth load-bearing airbag 55 do not provide load support. Only the fifth load-bearing airbag 44, the sixth load-bearing airbag 45, the seventh load-bearing airbag 63, and the eighth load-bearing airbag 64 provide load support. The electric drive middle axle does not provide driving force. Only the electric drive rear axle provides driving force. This can reduce energy consumption by about 3%-5% and increase the vehicle's driving range.

[0067] According to the embodiment of the present invention, the suspension system 100 is constructed as a nine-airbag air suspension and employs dual height sensors (left height sensor 50 and right height sensor 60). This can effectively reduce energy consumption and increase driving range when the vehicle is unloaded. By detecting the height of the left and right sides of the frame in real time through the dual height sensors, the frame can be adjusted to a level state, reducing the risk of frame tilt and improving the vehicle's roll stability. Furthermore, the dual height sensors can be selectively installed according to requirements, satisfying both economic and practical needs.

[0068] The vehicle according to another embodiment of the present invention includes the suspension system 100 of the above embodiment.

[0069] According to the vehicle of the present invention, at least a portion of the lift air suspension assembly 7 of the suspension system 100 is located between the left front air suspension assembly 3 and the right front air suspension assembly 5 in the width direction of the vehicle. The lift air suspension assembly 7 can be arranged between the electric drive middle axle and the electric drive rear axle, which can make full use of the space between the electric drive middle axle and the electric drive rear axle, which is conducive to realizing the miniaturization design of the suspension system 100, reducing the space occupied by the suspension system 100, and facilitating the arrangement of the suspension system 100.

[0070] In some embodiments of this utility model, the vehicle can be a new energy heavy truck. Compared with fuel vehicles, the vehicle in this embodiment does not have a middle drive shaft. The arrangement of the electric drive axle is more convenient and easier by raising the airbag 72. The height of the left and right sides of the frame is monitored simultaneously by the left height sensor 50 and the right height sensor 60, making the overall vehicle height adjustment more precise and sensitive.

[0071] According to the present invention, the vehicle is equipped with an electric drive middle axle and an electric drive rear axle. Compared with fuel vehicles, the intermediate drive shaft can be eliminated, which can solve the problem of limited space for improvement caused by avoiding the intermediate drive shaft in traditional fuel vehicles.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A suspension system characterized by, The left intermediate support (1) and the right intermediate support (2) are oppositely and spacedly arranged in the width direction of the vehicle; The left front air suspension assembly (3) is connected to the front side of the left intermediate support (1) in the length direction of the vehicle, and the left rear air suspension assembly (4) is connected to the rear side of the left intermediate support (1) in the length direction of the vehicle; The right front air suspension assembly (5) is connected to the front side of the right intermediate support (2) in the length direction of the vehicle, and the right rear air suspension assembly (6) is connected to the rear side of the right intermediate support (2) in the length direction of the vehicle; The lifting air suspension assembly (7) is at least partially located between the left front air suspension assembly (3) and the right front air suspension assembly (5) in the width direction of the vehicle; The left front air suspension assembly (3), the right front air suspension assembly (5) and the lifting air suspension assembly (7) are adapted to be connected with the electric drive middle axle of the vehicle, the left rear air suspension assembly (4) and the right rear air suspension assembly (6) are adapted to be connected with the electric drive rear axle of the vehicle, the left front air suspension assembly (3), the left rear air suspension assembly (4), the right front air suspension assembly (5) and the right rear air suspension assembly (6) are adapted to adjust the height of the vehicle frame in the height direction of the vehicle, and the lifting air suspension assembly (7) is adapted to adjust the height of the electric drive middle axle. The lifting air suspension assembly (7) comprises:

2. The suspension system of claim 1, wherein, The mounting bracket (71) is adapted to be connected with the vehicle frame, and the mounting bracket (71) has a mounting groove (711); The lifting air suspension assembly (7) comprises: The lifting bracket (73) is connected with the lifting air bag (72) at one end, and the other end of the lifting bracket (73) is adapted to be connected with the electric drive middle axle, and the lifting air bag (72) adjusts the height of the electric drive middle axle by controlling the height of the lifting bracket (73). The left front air suspension assembly (3) comprises a left front support arm bracket (31), a left front thrust rod (32), a left front shock absorber (33), a first load air bag (34) and a second load air bag (35), the left front shock absorber (33) is adapted to be connected between the left front support arm bracket (31) and the vehicle frame, the front end of the left front support arm bracket (31) is adapted to be connected with the vehicle frame through the first load air bag (34), the rear end of the left front support arm bracket (31) is adapted to be connected with the vehicle frame through the second load air bag (35), the front end of the left front thrust rod (32) is hinged with the left front support arm bracket (31), and the rear end of the left front thrust rod (32) is hinged with the left intermediate support (1); 3. The suspension system of claim 1, wherein, ​ The right front air suspension assembly (5) comprises a right front A-arm support (51), a right front thrust rod (52), a right front shock absorber (53), a third load bearing air bag (54) and a fourth load bearing air bag (55), the right front shock absorber (53) is adapted to be connected between the right front A-arm support (51) and the vehicle frame, the front end of the right front A-arm support (51) is adapted to be connected with the vehicle frame through the third load bearing air bag (54), the rear end of the right front A-arm support (51) is adapted to be connected with the vehicle frame through the fourth load bearing air bag (55), the front end of the right front thrust rod (52) is hinged with the right front A-arm support (51), and the rear end of the right front thrust rod (52) is hinged with the right middle support (2).

4. The suspension system of claim 3, wherein, The suspension system further comprises a front stabilizer bar (8), both ends of the front stabilizer bar (8) are adapted to be connected with the vehicle frame, and the front stabilizer bar (8) is arranged through the left front A-arm support (31) and the right front A-arm support (51).

5. The suspension system of claim 1, wherein, The left rear air suspension assembly (4) comprises a left rear A-arm support (41), a left rear thrust rod (42), a left rear shock absorber (43), a fifth load bearing air bag (44) and a sixth load bearing air bag (45), the left rear shock absorber (43) is adapted to be connected between the left rear A-arm support (41) and the vehicle frame, the front end of the left rear A-arm support (41) is adapted to be connected with the vehicle frame through the fifth load bearing air bag (44), the rear end of the left rear A-arm support (41) is adapted to be connected with the vehicle frame through the sixth load bearing air bag (45), the front end of the left rear thrust rod (42) is hinged with the left middle support (1), and the rear end of the left rear thrust rod (42) is hinged with the left rear A-arm support (41). The right rear air suspension assembly (6) comprises a right rear A-arm support (61), a right rear thrust rod, a right rear shock absorber (62), a seventh load bearing air bag (63) and an eighth load bearing air bag (64), the right rear shock absorber (62) is adapted to be connected between the left rear A-arm support (41) and the vehicle frame, the front end of the right rear A-arm support (61) is adapted to be connected with the vehicle frame through the seventh load bearing air bag (63), the rear end of the right rear A-arm support (61) is adapted to be connected with the vehicle frame through the eighth load bearing air bag (64), the front end of the right rear thrust rod is hinged with the right middle support (2), and the rear end of the right rear thrust rod is hinged with the right rear A-arm support (61).

6. The suspension system of claim 5, wherein, The suspension system further comprises a rear stabilizer bar (10), both ends of the rear stabilizer bar (10) are adapted to be connected with the vehicle frame, and the rear stabilizer bar (10) is arranged through the left rear A-arm support (41) and the right rear A-arm support (61).

7. The suspension system of claim 1, wherein The suspension system further comprises a front cushion block (30) and a rear cushion block (40), the front cushion block (30) is adapted to be arranged directly above the electric drive front axle and connected with the vehicle frame, and the rear cushion block (40) is adapted to be arranged directly above the electric drive rear axle and connected with the vehicle frame.

8. The suspension system of any one of claims 1-7, wherein, The suspension system further comprises: A left height sensor (50) adapted to detect the height of the left side of the vehicle frame; A right height sensor (60) adapted to detect the height of the right side of the vehicle frame.

9. The suspension system of claim 8, wherein, The left height sensor (50) comprises a left swing rod (501) and a left angle detector (502), the left angle detector (502) is fixedly arranged on the left side of the vehicle frame, one end of the left swing rod (501) is adapted to be hingedly connected with the left end of the electric drive rear axle, the other end of the left swing rod (501) is hingedly connected with the left angle detector (502), the left angle detector (502) detects the angle of the left swing rod (501) to obtain the height of the left side of the vehicle frame; The right height sensor (60) comprises a right swing rod (601) and a right angle detector (602), the right angle detector (602) is fixedly arranged on the right side of the vehicle frame, one end of the right swing rod (601) is adapted to be hingedly connected with the right end of the electric drive rear axle, the other end of the right swing rod (601) is hingedly connected with the right angle detector (602), the right angle detector (602) detects the angle of the right swing rod (601) to obtain the height of the right side of the vehicle frame.

10. A vehicle characterized by comprising: A suspension system according to any one of claims 1-9.

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