A compact lightweight air suspension system and vehicle

Abstract

The application discloses a compact and light-weight air suspension system and a car, wherein air suspension supports are symmetrically fixed to the front part of a frame; an electric drive axle is fixed below the frame; an axle connecting support is screwed to the upper end surface of the electric drive axle; a pair of upper support rods of a reaction support device are rotationally connected to the frame and the axle connecting support; a pair of lower support rods of the reaction support device are rotationally connected to the air suspension supports and air suspension arms in pairs; the middle parts of the air suspension arms are respectively fixed to the lower sides of the electric drive axle; the upper and lower ends of the air springs are respectively arranged on the front and rear ends of the air suspension arms on the same side and on the frame; the two ends of shock absorbers are rotationally connected to the front support arms of the frame and the air suspension arms; the middle shaft of a transverse stabilizer assembly is connected to the lower end of the frame, and the two ends of the transverse stabilizer assembly are respectively rotationally connected to the rear support arms of a pair of air suspension arms; the application reserves more space for the arrangement of a battery, and reduces the weight of the suspension system through the light-weight of the components.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile chassis suspension, and in particular to a compact lightweight air suspension system and an automobile. Background Art

[0002] Air suspension is a commonly used structural form of commercial vehicle suspension. With the increasing application of larger-sized new energy electric drive axles in commercial vehicles, existing air suspension systems also face problems such as interference with the electric drive axle housing.

[0003] At the same time, new energy commercial vehicles require larger battery layout space to meet higher mileage, so reducing the suspension structure size as much as possible and reserving more space for battery layout has also become a key issue. Summary of the Invention

[0004] To solve the above problems, the present invention provides a compact and lightweight air suspension system, which matches the larger shell size of the electric drive axle while reserving as much space as possible for battery layout, and reduces the weight of the suspension system by lightweighting the component structure.

[0005] The present invention proposes a compact and lightweight air suspension system, comprising a vehicle frame, two air suspension brackets, an electric drive axle, a connecting bracket on the axle, a reaction support device, a pair of air suspension arms, four air springs, a pair of shock absorbers, and a lateral stabilizer bar assembly;

[0006] Two air suspension brackets are symmetrically fixed to the front of the frame;

[0007] The electric drive axle is fixed under the frame;

[0008] The connecting bracket on the bridge is screwed to the upper end surface of the electric drive bridge between the two longitudinal beams of the electric drive bridge frame;

[0009] The reaction support device includes a pair of upper support rods and a pair of lower support rods. The pair of upper support rods of the reaction support device are respectively rotatably connected to the vehicle frame and the bridge connecting bracket at corresponding positions. The pair of lower support rods of the reaction support device are respectively rotatably connected to two air suspension brackets and a pair of air suspension supporting arms at corresponding positions.

[0010] The middle parts of a pair of air suspension arms are fixed to the two sides below the electric drive axle, and two air springs are respectively set at the front and rear ends of the air suspension arm support arm on the same side, and the upper end of each air spring is fixed to the vehicle frame at the corresponding position; the two ends of each shock absorber are respectively rotatably connected to the vehicle frame and the front support arm of the air suspension arm;

[0011] The middle shaft of the lateral stabilizer bar assembly is connected to the lower end of the vehicle frame, and the two ends of the lateral stabilizer bar assembly are respectively rotatably connected to the rear support arms of a pair of air suspension bracket arms.

[0012] Each air suspension bracket has an overall R-shaped structure. In order to avoid battery space, the bracket has an asymmetric R-shaped structure to minimize the x-direction dimension. The upper end of the air suspension bracket includes a vertical side arm surface and a horizontal support surface. The vertical side arm surface is correspondingly contacted and screwed to the outer side wall of the frame, and the horizontal support surface is contacted and screwed to the lower wing surface of the frame. The lower end of the air suspension bracket is provided with an inverted U-shaped hinge shaft connecting arm. Each end of the inverted U-shaped hinge shaft connecting arm is provided with a through hole with an internal thread to facilitate its connection with the rotating shaft of the lower reaction rod through bolts.

[0013] Two reinforcing ribs are symmetrically provided on the side wall of the air suspension bracket at the lower end of the vertical side arm surface to enhance the anti-bending support strength of the middle part of the R-shaped air suspension bracket. A weight-reducing hole is provided between the front and rear side arm surfaces of the air suspension bracket to reduce the deadweight of the air suspension bracket while also increasing the anti-bending support strength of the air suspension bracket itself. A U-shaped avoidance groove is provided on the upper end surface of the air suspension bracket between the vertical side arm surface and the horizontal support surface so that the lower end surface of the frame can be accommodated and contacted there.

[0014] The bridge connecting bracket includes an X-shaped block plane, and the four ends of the X-shaped block plane are vertically provided with threaded holes, and bolts pass through each threaded hole to fix the bridge connecting bracket to the electric drive bridge; a W-shaped connecting arm is provided on the front end surface of the X-shaped block plane, and two U-shaped hinges are formed on both sides of the W-shaped connecting arm. Each U-shaped hinge can accommodate the rear end of an upper support rod of the reaction support device to rotate up and down therein, and the rear ends of a pair of upper support rods of the reaction support device are respectively connected to the corresponding two U-shaped hinges through hinge shafts; V-shaped weight-reducing grooves are respectively provided at the corresponding positions in the middle of the upper and lower end surfaces of the X-shaped block plane to reduce the weight of the parts.

[0015] The rear end of the first upper reaction rod is screwed on the arm surface of the corresponding U-shaped hinge part through the two first upper radial bolts, and the first upper rod body of the first upper reaction rod is respectively connected to the first upper bearing at both ends and the first upper hinge shaft sleeved in each first upper bearing. The cam is fixed to the two ends of the inverted U-shaped hinge connecting arm by two first lower radial bolts, and the rear end of the first lower reaction rod is fixed to the lower end of the middle part of the air suspension support arm on the same side by two first lower radial bolts, and the first lower rod body of the first lower reaction rod is connected to the rotation of the first lower bearings at both ends and the first lower hinge shaft sleeved in each first lower bearing. The first lower reaction rod can be flipped up and down respectively relative to the front and rear ends of the first lower rod body of the corresponding air suspension support arm and the air suspension support arm; similarly, the second lower reaction rod can be flipped up and down respectively relative to the front and rear ends of the second lower rod body of the corresponding air suspension support arm and the air suspension support arm.

[0016] The cam is connected to the left and right sides of the support arm body by the two first lower radial bolts, and the rear end of the second lower rod body of the second lower reaction rod is rotatably connected to the corresponding reaction rod connecting arm. The upper ends of the support arms of the support arm body are respectively provided with air spring receiving brackets, and the lower ends of the two air springs are respectively fixed on the air spring receiving brackets at both ends of the support arm body on the same side. The front upper end side wall of the support arm of the support arm body is provided with a shock absorber hinge hole, and the lower end of each shock absorber is pivotally connected to the outer side of the corresponding shock absorber hinge hole, and the rear lower end side wall of the support arm of the support arm body is provided with a transverse stabilizer bar hinge hole, and the two ends of the transverse stabilizer bar assembly are respectively rotatably connected to the outer sides of the transverse stabilizer bar hinge holes of the two support arm bodies. The offset connection design at both ends of the transverse stabilizer bar assembly facilitates alignment of both sides during assembly.

[0017] An inverted trapezoidal accommodating groove is provided between the left and right sides of the upper end surface in the middle of each support arm body. The accommodating groove plays a weight-reducing role while avoiding direct contact between the entire plane and the electric drive axle housing, preventing difficulty in tightening the bolts when the flatness of the parts is not well controlled. The accommodating groove is in contact with the lower end of the aligned electric drive axle and is screwed and fixed to the electric drive axle through fixing bolts provided on the front and rear sides of the accommodating groove. Vertical weight-reducing grooves are provided on the front and rear end side walls of each support arm body to reduce the self-weight of the parts. Support arm weight-reducing grooves are provided on the left and right side walls of the front support arm and the rear support arm of each support arm body to further reduce the self-weight of the parts.

[0018] The transverse stabilizer bar assembly includes a U-shaped rod body, two hinges, two suspension arms and two suspension arm connecting brackets; the front ends of the two bent arms of the U-shaped rod body are respectively connected to the outside of the transverse stabilizer bar hinge holes of the two support arm bodies through hinges, the left and right sides of the straight rod section of the U-shaped rod body are respectively connected to the lower ends of the two suspension arms, the upper ends of the two suspension arms are respectively connected to the lower ends of the two suspension arm connecting brackets, and the upper ends of the two suspension arm connecting brackets are respectively fixed to the outer walls of the two longitudinal beams of the frame.

[0019] Each boom includes a boom, a fork-shaped upper connecting part, an Ω-shaped upper holding shoe and an Ω-shaped lower holding shoe. The fork-shaped upper connecting part and the Ω-shaped upper holding shoe are fixedly connected to the upper and lower ends of the boom respectively. The Ω-shaped lower holding shoe is aligned with the Ω-shaped upper holding shoe and screwed together to form a boom pivot. The line connecting the two end walls of the Ω-shaped upper holding shoe is inclined at an acute angle to the horizontal plane, that is, the front end wall of the Ω-shaped upper holding shoe is low and the rear end wall of the Ω-shaped upper holding shoe is high. The purpose of this structural design is to avoid interference with the air spring at the lower jump limit.

[0020] An automobile comprises a body sheet metal and a compact lightweight air suspension system, wherein the frame structure of the vehicle frame is fixed to the lower end surface of the body sheet metal.

[0021] Beneficial effects

[0022] The present invention maximizes the battery layout space by improving the air suspension bracket structure and the bolt connection form. At the same time, the rearward arrangement of the stabilizer bar opening avoids interference between the lateral stabilizer bar and the electric drive axle housing, and solves the problem of too small suspension ground clearance. The lightweight structural design of the air suspension arm and the reaction rod bracket realizes the lightweighting of the suspension system and reduces the weight of the suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall side structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall top view of the structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the overall enlarged structure of the air suspension bracket of the present invention.

[0026] Figure 4 Schematic diagram of the overall enlarged structure of the connecting bracket on the bridge of the present invention.

[0027] Figure 5 Schematic diagram of the overall enlarged structure of the air suspension support arm of the present invention.

[0028] Figure 6 It is a schematic diagram of the enlarged structure of the connection between the air suspension bracket and the lower reaction rod of the present invention.

[0029] Figure 7 It is a partially enlarged structural schematic diagram of the connection between the air suspension support arm and the lateral stabilizer bar assembly of the present invention.

[0030] Figure 8 It is a schematic diagram of the enlarged structure of the boom of the present invention.

[0031] In the picture:

[0032] 1. Frame;

[0033] 2. Air suspension bracket; 21. Vertical side arm surface; 22. Horizontal support surface; 23. Inverted U-shaped hinge connecting arm; 231. Perforation; 24. Reinforcement rib; 25. Weight reduction hole; 26. U-shaped avoidance groove;

[0034] 3. Electric drive axle;

[0035] 4. Bridge connecting bracket; 41. X-shaped block plane; 42. Threaded hole; 43. Connecting arm; 44. U-shaped hinge; 45. V-shaped weight-reducing groove;

[0036] 5. Reaction support device; 51. First upper reaction rod; 511. First upper rod body; 512. First upper bearing; 513. First upper hinge shaft; 514. First upper radial bolt; 52. Second upper reaction rod; 521. Second upper rod body; 53. First lower reaction rod; 531. First lower rod body; 532. First lower bearing; 533. First lower hinge shaft; 534. First lower radial bolt; 54. Second lower reaction rod; 541. Second lower rod body;

[0037] 6. Air suspension support arm; 61. Support arm body; 62. Reaction rod connecting arm; 63. Threaded hole; 64. Air spring support bracket; 65. Shock absorber hinge hole; 66. Lateral stabilizer bar hinge hole; 67. Accommodation groove; 68. Vertical weight reduction groove; 69. Support arm weight reduction groove;

[0038] 7. Air spring;

[0039] 8. Shock absorber;

[0040] 9. Transverse stabilizer bar assembly; 91. U-shaped rod body; 92. Hinge; 93. Boom; 931. Boom; 932. Fork-shaped upper connecting part; 933. Ω-shaped upper holding shoe; 934. Ω-shaped lower holding shoe; 94. Boom connecting bracket. DETAILED DESCRIPTION

[0041] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only show portions relevant to the present invention, not all of them.

[0042] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0044] Example 1

[0045] See also Figures 1-8 As shown, a compact and lightweight air suspension system includes a vehicle frame 1, two air suspension brackets 2, an electric drive axle 3, a bridge connecting bracket 4, a reaction support device 5, a pair of air suspension arms 6, four air springs 7, a pair of shock absorbers 8, and a lateral stabilizer bar assembly 9;

[0046] Two air suspension brackets 2 are symmetrically fixed to the front of the vehicle frame 1;

[0047] The electric drive axle 3 is fixed below the vehicle frame 1;

[0048] The bridge connecting bracket 4 is screwed to the upper end surface of the electric drive bridge 3 between the two longitudinal beams of the electric drive bridge 3 frame;

[0049] The reaction support device 5 includes a pair of upper support rods and a pair of lower support rods. The pair of upper support rods of the reaction support device 5 are respectively rotatably connected to the vehicle frame 1 and the bridge connecting bracket 4 at corresponding positions. The pair of lower support rods of the reaction support device 5 are respectively rotatably connected to the two air suspension brackets 2 and a pair of air suspension supporting arms 6 at corresponding positions.

[0050] The middle parts of a pair of air suspension arms 6 are fixed to the two sides below the electric drive axle 3, and two air springs 7 are respectively arranged at the front and rear ends of the support arms of the air suspension arms 6 on the same side, and the upper end of each air spring 7 is fixed to the vehicle frame 1 at the corresponding position; the two ends of each shock absorber 8 are respectively rotatably connected to the vehicle frame 1 and the front support arm of the air suspension arm 6;

[0051] The middle axis of the lateral stabilizer bar assembly 9 is connected to the lower end of the vehicle frame, and the two ends of the lateral stabilizer bar assembly 9 are respectively rotatably connected to the rear support arms of a pair of air suspension bracket arms 6.

[0052] Each air suspension bracket 2 has an overall R-shaped structure. The upper end of the air suspension bracket 2 includes a vertical side arm surface 21 and a horizontal support surface 22. The vertical side arm surface 21 contacts the outer wall of the frame 1 and is screwed to the outer wall of the frame 1 through bolts passed through three rows of bolt holes. In order to ensure the strength of the bolt connection, the horizontal support surface 22 contacts the lower wing surface of the frame 1 and is screwed and fixed to the lower wing surface of the frame through bolts passed through two rows of bolt holes. The lower end of the air suspension bracket 2 is provided with an inverted U-shaped hinge shaft connecting arm 23, and each end of the inverted U-shaped hinge shaft connecting arm 23 is provided with a through hole 231 with an internal thread.

[0053] Two reinforcing ribs 24 are symmetrically provided on the side wall of the air suspension bracket 2 at the lower end of the vertical side arm surface 21, a weight reduction hole 25 is provided between the front and rear side arm surfaces of the air suspension bracket 2, and a U-shaped avoidance groove 26 is provided on the upper end surface of the air suspension bracket 2 between the vertical side arm surface 21 and the horizontal support surface 22.

[0054] The bridge connecting bracket 4 includes an X-shaped block plane 41, and the four ends of the X-shaped block plane 41 are vertically provided with threaded holes 42. Bolts pass through each threaded hole 42 to fix the bridge connecting bracket 4 to the electric drive bridge 3; a W-shaped connecting arm 43 is provided on the front end surface of the X-shaped block plane 41, and two U-shaped hinged parts 44 are formed on both sides of the W-shaped connecting arm 43. The rear ends of a pair of upper support rods of the reaction support device 5 are respectively connected to the corresponding two U-shaped hinged parts 44 through hinge shafts; V-shaped weight-reducing grooves 45 are respectively provided at the corresponding positions in the middle of the upper and lower end surfaces of the X-shaped block plane 41.

[0055] The reaction support device 5 includes a first upper reaction rod 51, a second upper reaction rod 52, a first lower reaction rod 53 and a second lower reaction rod 54 of identical structure; the first upper reaction rod 51 includes a first upper rod body 511, first upper bearings 512 provided at both ends of the first upper rod body 511, a first upper hinge shaft 513 sleeved in each first upper bearing 512 and a first upper radial bolt 514 threadedly connected to both ends of each first upper hinge shaft 513. The first upper reaction rod 51 and the second upper reaction rod 52 form a The first upper reaction rod 51 is arranged in a V shape, and the front end of the first upper reaction rod 51 is fixed to the inner wall of the frame 1 by two first upper radial bolts 514. The rear end of the first upper reaction rod 51 is screwed to the arm surfaces at both ends of the corresponding U-shaped hinge portion 44 by two first upper radial bolts 514. The first upper rod body 511 of the first upper reaction rod 51 is connected to the rotation of the first upper bearings 512 at both ends and the first upper hinge shaft 513 sleeved in each first upper bearing 512. The first upper reaction rod 51 is respectively relative to the corresponding frame 1 and The front and rear ends of the first upper rod body 511 of the bridge connecting bracket 4 can be turned up and down respectively; similarly, the front and rear ends of the second upper reaction rod 521 of the second upper reaction rod 521 corresponding to the vehicle frame 1 and the bridge connecting bracket 4 can be turned up and down respectively; the front end of the first lower reaction rod 53 is fixed to the two through holes 231 with internal threads on the inverted U-shaped hinge shaft connecting arm 23 on the same side by two first lower radial bolts 534, and the rear end of the first lower reaction rod 53 is fixed to the air suspension support arm 6 on the same side by two first lower radial bolts 534. The first lower reaction rod 53 is connected to the lower end of the first lower rod body 531 of the first lower reaction rod 53 by the first lower bearings 532 at both ends and the first lower hinge shaft 533 sleeved in each first lower bearing 532. The front and rear ends of the first lower reaction rod 53 can be flipped up and down respectively relative to the corresponding air suspension bracket 2 and the first lower rod body 531 of the air suspension support arm 6; similarly, the front and rear ends of the second lower reaction rod 54 can be flipped up and down respectively relative to the corresponding air suspension bracket 2 and the second lower rod body 541 of the air suspension support arm 6.

[0056] Each air suspension support arm 6 includes a support arm body 61 of a recurve bow structure, and a reaction rod connecting arm 62 is protruded on the left and right sides of the lower end surface of the middle part of the support arm body 61. The front and rear end surfaces of the lower end of each reaction rod connecting arm 62 are provided with a screw hole 63. The rear end of the first lower rod body 531 of the first lower reaction rod 53 is fixed in the corresponding screw hole 63 by two first lower radial bolts 534, and the rear end of the second lower rod body 541 of the second lower reaction rod 54 is rotatably connected to the corresponding reaction rod connecting arm 62. The support of the support arm body 61 is Air spring receiving brackets 64 are respectively provided on the upper part of both ends of the arm, and the lower ends of the two air springs 7 are respectively fixed on the air spring receiving brackets 64 at both ends of the support arm body 61 on the same side, and a shock absorber hinge hole 65 is provided on the upper side wall of the front part of the support arm of the support arm body 61. The lower end of each shock absorber 8 is connected to the outer side of the corresponding shock absorber hinge hole 65 through a pivot rotation, and a transverse stabilizer bar hinge hole 66 is provided on the lower side wall of the rear end of the support arm of the support arm body 61. The two ends of the transverse stabilizer bar assembly 9 are respectively rotatably connected to the outer sides of the transverse stabilizer bar hinge holes 66 of the two support arm bodies 61.

[0057] An inverted trapezoidal accommodating groove 67 is provided between the left and right sides of the upper end surface of the middle part of each support arm body 61. The accommodating groove 67 is in contact with the lower end of the corresponding electric drive bridge 3 and is screwed and fixed to the electric drive bridge 3 by long fixing bolts provided on the front and rear sides of the accommodating groove 67. The front and rear end side walls of each support arm body 61 are respectively provided with vertical weight-reducing grooves 68, and the left and right side walls of the front support arm and the rear support arm of each support arm body 61 are respectively provided with support arm weight-reducing grooves 69.

[0058] The transverse stabilizer bar assembly 9 includes a U-shaped rod body 91, two hinges 92, two suspension arms 93 and two suspension arm connecting brackets 94; the front ends of the two bent arms of the U-shaped rod body 91 are respectively rotatably connected to the outside of the transverse stabilizer bar hinge holes 66 of the two support arm bodies 61 through the hinges 92, and the left and right sides of the straight rod section of the U-shaped rod body 91 are respectively rotatably connected to the lower ends of the two suspension arms 93, and the upper ends of the two suspension arms 93 are respectively rotatably connected to the lower ends of the two suspension arm connecting brackets 94, and the upper ends of the two suspension arm connecting brackets 94 are respectively fixed to the outer walls of the two longitudinal beams of the frame.

[0059] Each boom 93 includes a boom 931, a fork-shaped upper connecting portion 932, an Ω-shaped upper holding pad 933 and an Ω-shaped lower holding pad 934. The fork-shaped upper connecting portion 932 and the Ω-shaped upper holding pad 933 are fixedly connected to the upper and lower ends of the boom 931 respectively. The Ω-shaped lower holding pad 934 is aligned with the Ω-shaped upper holding pad 933 and screwed together to form a boom pivot. The line connecting the two end walls of the Ω-shaped upper holding pad 933 is inclined at an acute angle to the horizontal plane, that is, the front end wall of the Ω-shaped upper holding pad 933 is low and the rear end wall of the Ω-shaped upper holding pad 933 is high.

[0060] Example 2

[0061] An automobile comprises a body sheet metal and a compact lightweight air suspension system, wherein a frame structure of a vehicle frame 1 is fixed to a lower end surface of the body sheet metal.

[0062] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A compact and lightweight air suspension system, characterized by: It includes a vehicle frame (1), two air suspension brackets (2), an electric drive bridge (3), a bridge connecting bracket (4), a reaction support device (5), a pair of air suspension supporting arms (6), four air springs (7), a pair of shock absorbers (8) and a lateral stabilizer bar assembly (9); Two air suspension brackets (2) are symmetrically fixed to the front of the vehicle frame (1); The electric drive bridge (3) is fixed below the vehicle frame (1); The bridge connecting bracket (4) is screwed to the upper end surface of the electric drive bridge (3) between the two longitudinal beams of the electric drive bridge (3) frame; The reaction support device (5) comprises a pair of upper support rods and a pair of lower support rods. The pair of upper support rods of the reaction support device (5) are respectively rotatably connected to the vehicle frame (1) and the bridge connecting bracket (4) at corresponding positions. The pair of lower support rods of the reaction support device (5) are respectively rotatably connected to two air suspension brackets (2) and a pair of air suspension supporting arms (6) at corresponding positions. The middle parts of a pair of air suspension supporting arms (6) are respectively fixed on both sides below the electric drive bridge (3); two air springs (7) are respectively arranged at the front and rear ends of the support arms of the air suspension supporting arms (6) on the same side, and the upper end of each air spring (7) is fixed on the vehicle frame (1) at a corresponding position; the two ends of each shock absorber (8) are respectively rotatably connected to the vehicle frame (1) and the front support arm of the air suspension supporting arm (6); The middle shaft of the lateral stabilizer bar assembly (9) is connected to the lower end of the vehicle frame, and the two ends of the lateral stabilizer bar assembly (9) are respectively rotatably connected to the rear support arms of a pair of air suspension supporting arms (6); Each air suspension bracket (2) is an asymmetric R-shaped structure as a whole. The upper end of the air suspension bracket (2) includes a vertical side arm surface (21) and a horizontal support surface (22). The vertical side arm surface (21) is correspondingly contacted and screwed to the outer wall of the frame (1). The horizontal support surface (22) contacts and screws the lower wing surface of the frame (1). The lower end of the air suspension bracket (2) is provided with an inverted U-shaped hinge shaft connecting arm (23). Each end of the inverted U-shaped hinge shaft connecting arm (23) is provided with a through hole (231) with an internal thread. Two reinforcing ribs (24) are symmetrically provided on the side wall of the air suspension bracket (2) at the lower end of the vertical side arm surface (21), namely, reinforcing rib A and reinforcing rib B. The reinforcing rib A close to the air spring is a straight line, and the reinforcing rib B away from the air spring is a broken line. The reinforcing rib B gradually approaches the reinforcing rib A from top to bottom, thereby minimizing the x-direction size and avoiding the battery space. The x-direction is the driving direction of the vehicle. A weight-reducing hole (25) is provided between the front and rear side arm surfaces of the air suspension bracket (2). A U-shaped avoidance groove (26) is provided on the upper end surface of the air suspension bracket (2) between the vertical side arm surface (21) and the horizontal support surface (22). One end of the vertical side arm surface (21) is flush with the upper end of the reinforcing rib B, and the other end of the vertical side arm surface (21) extends toward one side of the air spring. The lateral stabilizer bar assembly (9) includes two booms (93); each boom (93) includes a boom (931), a fork-shaped upper connecting portion (932), an Ω-shaped upper holding pad (933), and an Ω-shaped lower holding pad (934); the fork-shaped upper connecting portion (932) and the Ω-shaped upper holding pad (933) are fixedly connected to the upper and lower ends of the boom (931), respectively; the Ω-shaped lower holding pad (934) is aligned with the Ω-shaped upper holding pad (933) and is screwed to form a boom pivot; a line connecting the two end walls of the Ω-shaped upper holding pad (933) forms an inclined acute angle structure with a horizontal plane, that is, the front end wall of the Ω-shaped upper holding pad (933) is low and the rear end wall of the Ω-shaped upper holding pad (933) is high.

2. The compact lightweight air suspension system according to claim 1, characterized in that: The bridge connecting bracket (4) includes an X-shaped block plane (41), and the four ends of the X-shaped block plane (41) are vertically provided with threaded holes (42), and bolts pass through each threaded hole (42) to fix the bridge connecting bracket (4) with the electric drive bridge (3); a W-shaped connecting arm (43) is provided on the front end surface of the X-shaped block plane (41), and two U-shaped hinge parts (44) are formed on both sides of the W-shaped connecting arm (43), and the rear ends of a pair of upper support rods of the reaction support device (5) are respectively connected to the corresponding two U-shaped hinge parts (44) through hinge shafts; V-shaped weight-reducing grooves (45) are respectively provided at corresponding positions in the middle of the upper and lower end surfaces of the X-shaped block plane (41).

3. The compact and lightweight air suspension system according to claim 2, characterized in that: The reaction support device (5) comprises a first upper reaction rod (51), a second upper reaction rod (52), a first lower reaction rod (53) and a second lower reaction rod (54) of identical structure; the first upper reaction rod (51) comprises a first upper rod body (511), first upper bearings (512) arranged at both ends of the first upper rod body (511), a first upper hinge shaft (513) sleeved in each first upper bearing (512) and a first upper radial bolt (514) threadedly connected to both ends of each first upper hinge shaft (513); the first upper reaction rod (51) and the second upper reaction rod (52) are connected to each other; 2) are arranged in a V shape, the front end of the first upper reaction rod (51) is fixed to the inner wall of the frame (1) through two first upper radial bolts (514), the rear end of the first upper reaction rod (51) is screwed to the arm surfaces at both ends of the corresponding U-shaped hinge part (44) through two first upper radial bolts (514), and the first upper rod body (511) of the first upper reaction rod (51) is respectively connected to the rotation of the first upper bearings (512) at both ends and the first upper hinge shaft (513) sleeved in each first upper bearing (512), and the first upper reaction rod (51) is respectively relative to the corresponding frame (1 ) and the front and rear ends of the first upper rod body (511) of the bridge connecting bracket (4) can be turned upside down respectively; similarly, the front and rear ends of the second upper rod body (521) of the second upper reaction rod (52) respectively relative to the corresponding vehicle frame (1) and the bridge connecting bracket (4) can be turned upside down respectively; the front end of the first lower reaction rod (53) is fixed to the two through holes (231) with internal threads of the inverted U-shaped hinge shaft connecting arm (23) on the same side by two first lower radial bolts (534), and the rear end of the first lower reaction rod (53) is fixed to the air suspension support arm (6) on the same side by two first lower radial bolts (534) The first lower reaction rod (53) is connected to the lower end of the middle part, and the first lower rod body (531) of the first lower reaction rod (53) is respectively connected to the rotation through the first lower bearings (532) at both ends and the first lower hinge shaft (533) sleeved in each first lower bearing (532). The first lower reaction rod (53) can be turned up and down respectively relative to the front and rear ends of the first lower rod body (531) of the corresponding air suspension bracket (2) and the air suspension support arm (6); similarly, the second lower reaction rod (54) can be turned up and down respectively relative to the front and rear ends of the second lower rod body (541) of the corresponding air suspension bracket (2) and the air suspension support arm (6).

4. The compact lightweight air suspension system according to claim 3, characterized in that: Each air suspension support arm (6) includes a support arm body (61) of a recurved bow structure, and reaction rod connecting arms (62) are protruded downwardly on the left and right sides of the lower end surface of the middle part of the support arm body (61), and screw holes (63) are provided on the front and rear end surfaces of the lower end of each reaction rod connecting arm (62). The rear end of the first lower rod body (531) of the first lower reaction rod (53) is fixed in the corresponding screw hole (63) by two first lower radial bolts (534), and the rear end of the second lower rod body (541) of the second lower reaction rod (54) is rotatably connected to the corresponding reaction rod connecting arm (62). The support arm body (61) is provided with a plurality of support arms (61). An air spring receiving bracket (64) is provided at the upper part of each end of the support arm, and the lower ends of the two air springs (7) are respectively fixed to the air spring receiving bracket (64) at the two ends of the support arm body (61) on the same side. A shock absorber hinge hole (65) is provided on the upper side wall of the front end of the support arm of the support arm body (61). The lower end of each shock absorber (8) is connected to the outer side of the corresponding shock absorber hinge hole (65) through a pivot. A transverse stabilizer hinge hole (66) is provided on the lower side wall of the rear end of the support arm of the support arm body (61). The two ends of the transverse stabilizer bar assembly (9) are respectively rotatably connected to the outer sides of the transverse stabilizer bar hinge holes (66) of the two support arm bodies (61).

5. The compact lightweight air suspension system according to claim 4, characterized in that: An inverted trapezoidal shaped receiving groove (67) is provided between the left and right sides of the upper end surface of the middle portion of each supporting arm body (61). The receiving groove (67) contacts the lower end of the corresponding electric drive bridge (3) and is screwed and fixed to the electric drive bridge (3) through fixing bolts provided on the front and rear sides of the receiving groove (67). Vertical weight-reducing grooves (68) are provided on the front and rear end side walls of each supporting arm body (61). Support arm weight-reducing grooves (69) are provided on the left and right side walls of the front support arm and the rear support arm of each supporting arm body (61).

6. The compact and lightweight air suspension system according to claim 5, characterized in that: The lateral stabilizer bar assembly (9) further comprises a U-shaped rod body (91), two hinges (92) and two suspension arm connecting brackets (94); the front ends of the two bent arms of the U-shaped rod body (91) are respectively rotatably connected to the outer sides of the lateral stabilizer bar hinge holes (66) of the two support arm bodies (61) through the hinges (92); the left and right sides of the straight rod section of the U-shaped rod body (91) are respectively rotatably connected to the lower ends of the two suspension arms (93); the upper ends of the two suspension arms (93) are respectively rotatably connected to the lower ends of the two suspension arm connecting brackets (94); and the upper ends of the two suspension arm connecting brackets (94) are respectively fixed to the outer side walls of the two longitudinal beams of the vehicle frame.

7. An automobile, characterized in that: The vehicle comprises a body sheet metal and a compact lightweight air suspension system as claimed in any one of claims 1 to 6, wherein the frame structure of the vehicle frame (1) is fixed to the lower end surface of the body sheet metal.

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