阅读说明：本技术 带有x形推力杆的空气悬架系统及车辆 (Air suspension system with X-shaped thrust rod and vehicle ) 是由 刘艺君 李英杰 吴晓涛 许长贺 祝洪滨 王兆友 于 2021-08-27 设计创作，主要内容包括：本申请涉及一种带有X形推力杆的空气悬架系统及车辆。空气悬架系统通过固定支架安装于车辆中后桥和车辆横梁,通过将X形推力杆与车辆横梁以及车辆中后桥连接,将I形推力杆与固定支架和车辆中后桥连接,并保证I形杆和X形杆平行。使得整个车辆悬架系统构成一个稳定的平行四边形。整体结构简单,X形推力杆的运用提升了空气悬架系统的侧倾刚度,两大推力杆和车辆中后桥结合形成平行四边形结构,使得杆系连接处的受力方向单一,通过对杆系等零部件的受力分析,可以更好的对零部件进行轻量化的匹配设计。解决了现有技术中空气悬架系统的侧倾刚度提升需求和系统轻量化需求难以同时满足的矛盾问题。(The application relates to an air suspension system with an X-shaped thrust rod and a vehicle. The air suspension system is arranged on a rear axle and a vehicle cross beam in a vehicle through a fixed support, the X-shaped thrust rod is connected with the vehicle cross beam and the rear axle in the vehicle, the I-shaped thrust rod is connected with the fixed support and the rear axle in the vehicle, and the I-shaped rod and the X-shaped rod are parallel. So that the whole vehicle suspension system forms a stable parallelogram. Overall structure is simple, and the application of X shape distance rod has promoted air suspension system's the rigidity of heeling, and rear axle combines to form parallelogram structure in two big distance rods and the vehicle for the atress direction of rod system junction is single, through the atress analysis to spare parts such as rod system, can be better carry out light-weighted matching design to spare part. The problem of the air suspension system among the prior art raise the demand with the system lightweight demand difficult to satisfy simultaneously the contradiction is solved.)

1. An air suspension system with an X-shaped thrust bar mounted to a rear axle and a vehicle cross member and a vehicle side member of a vehicle by a fixed bracket, wherein the fixed bracket has a first end and a second end opposite to each other, the first end of the fixed bracket being connected to the vehicle cross member and the vehicle side member;

the air suspension system with the X-shaped thrust rod comprises a first suspension system and a second suspension system which are symmetrically arranged about the fixed support;

the first suspension system includes:

one end of the I-shaped thrust rod is connected to the middle rear axle of the vehicle, and the other end of the I-shaped thrust rod is connected to the second end of the fixed bracket; and

the vehicle beam comprises an X-shaped thrust rod and two upper bridge supports, wherein one end of the X-shaped thrust rod is connected to a middle rear axle of the vehicle through the two upper bridge supports, and the other end of the X-shaped thrust rod is connected to the vehicle beam;

wherein the longitudinal extension direction of the I-shaped thrust rod and the plane of the X-shaped thrust rod are parallel to each other.

2. The air suspension system with an X-shaped thrust rod of claim 1, wherein the upper bridge bracket includes two thrust rod mating surfaces and an axle housing mating surface opposite each other;

mounting holes are formed in the matching surfaces of the two thrust rods, and the two bridge upper brackets are connected with the matching surfaces of the two thrust rods through the mounting holes;

the upper bridge support is connected with a rear axle in the vehicle through the axle housing matching surface in a welding mode;

the plane where the matching surface of the thrust rod is located and the plane where the matching surface of the axle housing is located are arranged in an included angle.

3. The air suspension system with an X-shaped thrust rod of claim 2 wherein said axle housing mating surface is notched at predetermined locations.

4. The air suspension system with an X-shaped thrust rod of claim 3, wherein the X-shaped thrust rod has a central axis, wherein an end of the X-shaped thrust rod proximate the vehicle cross beam is asymmetric about the central axis, wherein an end of the X-shaped thrust rod proximate the rear axle of the vehicle is symmetric about the central axis, and wherein a middle portion of the X-shaped thrust rod is hollowed out.

5. The air suspension system with an X-shaped thrust rod as claimed in claim 4, wherein a ball head is arranged at the joint of the X-shaped thrust rod and the vehicle cross beam, and an included angle between a central axis of a ball center connecting the X-shaped thrust rod and the ball head of the vehicle cross beam and a longitudinal direction of the vehicle cross beam is 15-30 degrees.

6. The air suspension system with an X-shaped thrust rod as claimed in claim 5, wherein a ball head is arranged at the joint of the X-shaped thrust rod and the upper bridge bracket, and a central axis of a spherical center connecting the X-shaped thrust rod and the ball head of the upper bridge bracket is parallel to the longitudinal direction of the vehicle cross member.

7. The air suspension system with an X-shaped thrust rod of claim 6, wherein the X-shaped thrust rod is connected with the bridge upper bracket by a glued stud;

and the top of the double-headed bolt with the rubber is provided with a hexagonal structure.

8. The air suspension system with an X-shaped thrust rod of claim 7 wherein said X-shaped thrust rod is connected to said vehicle cross member by a second connecting bolt having meshing teeth on the top.

9. The air suspension system with an X-shaped thrust rod of claim 8, wherein the first suspension system further comprises a bracket arm parallel to a lengthwise direction of the I-shaped thrust rod;

the supporting arm is connected to the middle rear axle of the vehicle and comprises a first arm and a second arm which are positioned on two sides of the connection part of the supporting arm and the middle rear axle of the vehicle;

wherein the first arm is closer to the fixed bracket than the second arm; and is

The length of the first arm is less than the length of the second arm.

10. The air suspension system with an X-shaped thrust rod of claim 9, wherein said first suspension system comprises a plurality of air springs;

the air springs are arranged at two ends of the supporting arm so as to connect the vehicle body and the supporting arm.

11. The air suspension system with an X-shaped thrust rod of claim 10, wherein said first suspension system further comprises a plurality of adapter seats, said trailing arm and said air spring being connected through said adapter seats.

12. A vehicle comprising an air suspension system with an X-shaped thrust bar according to any of claims 1-10.

Technical Field

The application relates to the technical field of vehicle chassis, in particular to an air suspension system with an X-shaped thrust rod and a vehicle.

Background

With the development of the vehicle chassis technology, an air suspension system technology appears, and the technology is used for relieving impact load transferred to a vehicle frame due to uneven road surface in the running process of a vehicle by elastically connecting the vehicle frame and an axle, so that the vibration caused by the impact load is reduced, and the driving comfort is improved. In the prior art, a V-rod air suspension system is often adopted in an air suspension system, and a hollow stabilizer bar or a solid thickened stabilizer bar is configured to ensure the stability of the air suspension system.

However, in the conventional air suspension system, the vehicle equipped with the hollow stabilizer bar has a problem of poor roll rigidity, and the vehicle equipped with the solid stabilizer bar has a problem of increased weight cost although the roll rigidity can be improved to a certain extent. That is, the roll stiffness requirements and the weight requirements of prior art air suspension systems are difficult to meet simultaneously.

Disclosure of Invention

In view of the above, it is necessary to provide an air suspension system with an X-shaped thrust rod and a vehicle, which can ensure roll stiffness of the air suspension system and control weight of the air suspension system, in order to solve the problem that roll stiffness and weight cost of the air suspension system in the prior art are difficult to balance.

According to one aspect of the application, an air suspension system with an X-shaped thrust rod and a vehicle are provided, and the air suspension system comprises

An air suspension system with an X-shaped thrust bar mounted to a rear axle and a vehicle cross member and a vehicle side member of a vehicle by a fixed bracket, wherein the fixed bracket has a first end and a second end opposite to each other, the first end of the fixed bracket being connected to the vehicle cross member and the vehicle side member;

the air suspension system with the X-shaped thrust rod comprises a first suspension system and a second suspension system which are symmetrically arranged about the fixed support;

the first suspension system includes:

one end of the I-shaped thrust rod is connected to the middle rear axle of the vehicle, and the other end of the I-shaped thrust rod is connected to the second end of the fixed bracket; and

the vehicle beam comprises an X-shaped thrust rod and two upper bridge supports, wherein one end of the X-shaped thrust rod is connected to a middle rear axle of the vehicle through the two upper bridge supports, and the other end of the X-shaped thrust rod is connected to the vehicle beam;

wherein the longitudinal extension direction of the I-shaped thrust rod and the plane of the X-shaped thrust rod are parallel to each other.

In one embodiment, the bridge upper bracket comprises two thrust rod matching surfaces and an axle housing matching surface which are opposite to each other;

mounting holes are formed in the matching surfaces of the two thrust rods, and the two bridge upper brackets are connected with the matching surfaces of the two thrust rods through the mounting holes;

the upper bridge support is connected with a rear axle in the vehicle through the axle housing matching surface in a welding mode;

the plane where the matching surface of the thrust rod is located and the plane where the matching surface of the axle housing is located are arranged in an included angle.

In one embodiment, the axle housing matching surface is provided with a notch at a preset position.

In one embodiment, the X-shaped thrust rod has a central axis, an end of the X-shaped thrust rod near the vehicle cross beam is asymmetric with respect to the central axis, an end of the X-shaped thrust rod near the rear axle in the vehicle is symmetric with respect to the central axis, and a middle of the X-shaped thrust rod is partially hollowed out.

In one embodiment, a ball head is arranged at the joint of the X-shaped thrust rod and the vehicle cross beam, and an included angle between a central axis connecting the X-shaped thrust rod and the ball head of the vehicle cross beam and the longitudinal direction of the vehicle cross beam is 15-30 degrees.

In one embodiment, a ball head is arranged at the joint of the X-shaped thrust rod and the upper bridge bracket, and a central axis of a ball center connecting the X-shaped thrust rod and the ball head of the upper bridge bracket is parallel to the longitudinal direction of the vehicle cross beam.

In one embodiment, the X-shaped thrust rod is connected with the bridge upper bracket through a stud bolt with glue;

and the top of the double-headed bolt with the rubber is provided with a hexagonal structure.

In one embodiment, the X-shaped thrust rod and the vehicle cross beam are connected through a second connecting bolt, and the top of the second connecting bolt is provided with meshing teeth.

In one embodiment, the first suspension system further comprises a bracket arm parallel to the lengthwise direction of the I-shaped thrust rod;

the supporting arm is connected to the middle rear axle of the vehicle and comprises a first arm and a second arm which are positioned on two sides of the connection part of the supporting arm and the middle rear axle of the vehicle;

wherein the first arm is closer to the fixed bracket than the second arm; and is

The length of the first arm is less than the length of the second arm.

In one embodiment, the first suspension system comprises a plurality of air springs;

the air springs are arranged at two ends of the supporting arm so as to connect the vehicle body and the supporting arm.

In one embodiment, the first suspension system further comprises a plurality of adapter seats, and the supporting arm and the air spring are connected through the adapter seats.

The present application further provides a vehicle including any of the above air suspension systems with an X-shaped thrust bar.

According to the air suspension system with the X-shaped thrust rod and the vehicle, the X-shaped thrust rod is connected with the vehicle cross beam and the vehicle middle and rear axle, the I-shaped thrust rod is connected with the fixed support and the vehicle middle and rear axle, and the I-shaped rod and the X-shaped rod are parallel. So that the whole vehicle suspension system forms a stable parallelogram. Overall structure is simple, and the application of X shape distance rod has promoted air suspension system's the rigidity of heeling, and rear axle combines to form parallelogram structure in two big distance rods and the vehicle for the atress direction of rod system junction is single, through the atress analysis to spare parts such as rod system, can be better carry out light-weighted matching design to spare part. The problem of the air suspension system among the prior art raise the demand with the system lightweight demand difficult to satisfy simultaneously the contradiction is solved.

Drawings

FIG. 1 is a block diagram illustrating the mounting of an air suspension system with an X-shaped thrust bar according to an embodiment of the present application;

FIG. 2 is a side view of a mounting structure of an air suspension system with an X-shaped thrust rod in an embodiment of the present application;

FIG. 3 is a block diagram of an upper bridge bracket of an air suspension system with an X-shaped thrust rod according to an embodiment of the present application;

FIG. 4 is a side view of an X-shaped thrust rod of an air suspension system with an X-shaped thrust rod according to an embodiment of the present application;

FIG. 5 is a block diagram illustrating an X-shaped thrust rod mounting configuration of an air suspension system with an X-shaped thrust rod according to an embodiment of the present application;

FIG. 6 is a block diagram of a first attachment bolt of an air suspension system with an X-shaped thrust rod according to an embodiment of the present application;

figure 7 is a second attachment bolt configuration view of an air suspension system with an X-shaped thrust rod in an embodiment of the present application.

The device comprises a fixed support 1, a vehicle middle and rear axle 2, a vehicle cross beam 31, a vehicle longitudinal beam 32, an I-shaped thrust rod 4, an X-shaped thrust rod 5, a ball head 51, a first connecting bolt 52, a second connecting bolt 53, an upper bridge support 6, a thrust rod matching surface 61, an axle housing matching surface 62, a notch 63, a support arm 7, a first arm 71, a second arm 72, an air spring 73 and an adapter seat 74.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As discussed in the background of the invention, current air suspension systems often employ V-bar air suspension systems and provide hollow stabilizer bars or solid thickened stabilizer bars to provide stability to the air suspension system. The hollow transverse stabilizer bar adopted at present has insufficient roll stiffness, and the solid transverse stabilizer bar has the problem of high weight cost, so that the roll stiffness requirement and the light weight requirement of the air suspension are difficult to meet at the same time.

Therefore, it is necessary to provide an air suspension system and a vehicle which satisfy both the requirement of roll rigidity and the requirement of light weight of the vehicle air suspension system by fine design of the assembly structure thereof.

Referring to fig. 1 and 2, fig. 1 is a view illustrating an installation structure of an air suspension system with an X-shaped thrust rod according to an embodiment of the present application, and fig. 2 is a view illustrating a side view of the installation structure of the air suspension system with an X-shaped thrust rod according to an embodiment of the present application.

Referring to fig. 1 and 2, an embodiment of the present application provides an air suspension system with an X-shaped thrust rod, which is mounted to a rear axle 2 and a vehicle cross member 31 and a vehicle longitudinal member 32 of a vehicle through a fixing bracket 1, wherein the fixing bracket 1 has a first end and a second end opposite to each other, and the first end of the fixing bracket 1 is connected to the vehicle cross member 31 and the vehicle longitudinal member 32. The air suspension system includes a first suspension system and a second suspension system which are symmetrically arranged with respect to the fixed bracket 1. The first suspension system includes an I-shaped thrust rod 4, an X-shaped thrust rod 5, and two on-bridge brackets 6.

Specifically, one end of the I-shaped thrust rod 4 is connected to the rear axle 2 in the vehicle, and the other end of the I-shaped thrust rod 4 is connected to the second end of the fixed bracket 1. One end of the X-shaped thrust rod 5 is connected to the rear axle 2 in the vehicle through two upper axle brackets 6, and the other end of the X-shaped thrust rod 5 is connected to the vehicle cross beam 3. Wherein, the longitudinal extension direction of the I-shaped thrust rod 4 and the plane of the X-shaped thrust rod 5 are parallel to each other.

That is, with the first suspension system, the fixed bracket 1, the I-shaped thrust rod 4, the X-shaped thrust rod 5, and the rear axle 2 in the vehicle form a quadrangle. For the whole air suspension system with the X-shaped thrust rod, the I-shaped thrust rod 4, the X-shaped thrust rod 5 and the middle rear axle 2 of the vehicle form a parallelogram. On the one hand, the parallelogram structure can reduce the inclination change of the thrust rod system of the air suspension in the vertical jumping process in the working process, and the reasonable power line included angle of the transmission shaft is ensured. On the other hand, the parallelogram structure makes the atress condition of air suspension system better more single, the lightweight design of the air suspension system of being more convenient for.

Overall, the main components of the entire air suspension system with the X-shaped thrust rod are only composed of the X-shaped thrust rod 5, the I-shaped thrust rod 4, the bridge upper bracket 6 and the fixed bracket 1. The X-shaped thrust rod 5 has a guiding function, and also has the advantages of high roll stability, high integration of an air suspension system, and a small number of parts, and is convenient for further lightweight design. The problem of the prior art in the lightweight demand and the requirement of roll stability need satisfy the contradiction simultaneously is solved.

Referring to fig. 3, 4 and 5, fig. 3 is a structural view of an upper bridge bracket 6 of an air suspension system with an X-shaped thrust rod according to an embodiment of the present invention, fig. 4 is a side view of the X-shaped thrust rod 5 of the air suspension system with an X-shaped thrust rod according to an embodiment of the present invention, and fig. 5 is a structural view illustrating an installation state of the X-shaped thrust rod 5 of the air suspension system with an X-shaped thrust rod according to an embodiment of the present invention.

As shown in fig. 4, in an embodiment of the present application, the X-shaped thrust rod 5 has a central axis, an end of the X-shaped thrust rod 5 close to the vehicle cross beam 32 is asymmetric with respect to the central axis, the asymmetric structure ensures installation and tightening space, and an end connected to the rear axle in the vehicle is a horizontal structure, so as to ensure transmission stress with the rear axle 2 in the vehicle without play. One end, close to the middle rear axle 2 of the vehicle, of the X-shaped thrust rod 5 is symmetrical about the central axis, and the middle of the X-shaped thrust rod 5 is partially hollowed. The weight of the air suspension system is reduced, and the lightweight design is achieved.

As shown in fig. 3, in an embodiment of the present application, the upper bridge bracket 6 includes two thrust rod mating surfaces 61 and an axle housing mating surface 62 that are opposite to each other. Wherein, the thrust rod matching surface 61 is connected with two joints at one end of the X-shaped thrust rod 52, and the axle housing matching surface 62 is connected with the rear axle 2 in the vehicle.

Further, all seted up the mounting hole on two distance rod fitting surfaces 61, two bridge upper brackets 6 are connected with two distance rod fitting surfaces 61 through the mounting hole, and bridge upper bracket 6 passes through axle housing fitting surface 62 and 2 welded connection of rear axle in the vehicle.

Preferably, the connection mode of upper bridge support 6 and axle housing fitting surface 62 is the welding seam connection, connects the joint strength that can guarantee upper bridge support 6 and axle housing fitting surface 62 through the welding seam.

Furthermore, the plane of the thrust rod matching surface 61 and the plane of the axle housing matching surface 62 form an included angle to ensure that the X-shaped thrust rod 5 meets the parallelogram rule in the vehicle air suspension, so that the stress condition of the X-shaped thrust rod 5 is ensured, and the lightweight design of the support arm 7 and the upper bridge bracket 6 can be further realized.

Specifically, the upper bridge support 6 is of an eccentric structure, the number of the thrust rod matching surfaces 61 is two, mounting holes are formed in each thrust rod matching surface 61, internal threads are formed in each mounting hole, and each thrust rod matching surface 61 is connected with one end of the X-shaped thrust rod 5 through the corresponding mounting hole. The axle housing matching surface 62 is a wide plane, and the strength of a welding seam between the fixing support 1 and the axle housing is ensured when the axle housing matching surface 62 is matched with the fixing support 1.

Further, in some embodiments of the present application, the axle housing mating surface 62 is provided with a cutout 63 at a predetermined location. On one hand, when the air suspension system works, certain extrusion can be generated between the X-shaped thrust rod 5 and the rear axle 2 in the vehicle, and a notch 63 is arranged on the axle housing matching surface 62 of the upper axle bracket 6, so that an extrusion space can be provided, namely, the notch 63 can ensure that the surface of the fixed bracket 1 can be well attached to the surface of the axle housing; on the other hand, the design of notch 63 can satisfy the lightweight demand of whole air suspension system.

As shown in fig. 4 and 5, in an embodiment of the present application, a ball 51 is disposed at a connection point of the X-shaped thrust rod 5 and the vehicle cross member 3. Because the shape factor of X-shaped thrust rod 5 and vehicle crossbeam 3, in order to guarantee that it can be laminated well so that X-shaped thrust rod 5 is single in order to be more convenient for carry out the lightweight design to member and connecting piece at the junction with vehicle crossbeam 3 atress, the axis of the centre of sphere of bulb 51 of connecting X-shaped thrust rod 5 and vehicle crossbeam 3 has the contained angle with the lengthwise direction of vehicle crossbeam 3.

As a preferred embodiment of the present application, the angle between the central axis connecting the center of the X-shaped thrust rod 5 and the ball head 51 of the vehicle cross member 3 and the longitudinal direction of the vehicle cross member 3 is 15-30 °

Further, the X-shaped thrust rod 5 is also provided with a ball 51 at the joint of the upper bridge support 6, and because the two thrust rod matching surfaces 61 are arranged at an included angle relative to the axle housing matching surface 62 in the design of the upper bridge support 6, the central axis of the spherical center of the ball 51 connecting the X-shaped thrust rod 5 and the upper bridge support 6 is parallel to the longitudinal direction of the vehicle cross beam 3. The stress of the X-shaped thrust rod 5 at the joint of the X-shaped thrust rod and the vehicle crossbeam 3 is single, so that the lightweight design of the rod piece and the connecting piece is facilitated.

In an embodiment of the application, the X-shaped thrust rod 5 is connected with the upper bridge bracket 6 through the first connecting bolt 52, and the detachment can be more conveniently realized through the bolt connection, so that the manufacturing and the assembly in the production process of the automobile air suspension system are facilitated.

Referring to fig. 6, fig. five shows a structure of a first connection bolt 52 of the air suspension system with the X-shaped thrust rod according to an embodiment of the present application.

Specifically, as shown in fig. 6, the top of the first coupling bolt 52 is provided with a hexagonal structure. The first connecting bolt 52 is formed by forging a hexagonal head at the top of the stud, and is convenient to assemble and clamp in the manufacturing and mounting processes.

Preferably, the first connecting bolt 52 is formed by a glued stud bolt, which has greater strength and better anti-loosening effect and better assembly. Wherein, the both ends of taking gluey stud still are equipped with the external screw thread, and hexagonal head is still forged out at the top of taking gluey stud to make things convenient for the assembly and the clamp of installation in-process and subsequent maintenance work. Furthermore, during installation, it is necessary to pre-coat glue on the first connecting bolt 52 to prevent loosening of the first connecting bolt 52 from affecting the stability of the vehicle air suspension.

Further, at the intersection of the first connection bolt 52 and the on-bridge bracket 6, the first connection bolt 52 and the on-bridge bracket 6 are fitted by a connection nut to prevent the first connection bolt 52 from being loosened. The multiple protection makes the steadiness of first connecting bolt 52 for upper bridge support 6, and the further fastness of guaranteeing the installation of X-shaped thrust rod 5 for rear axle 2 in the vehicle simultaneously for the atress direction of thrust rod spare is simplified, conveniently further carries out the lightweight design to vehicle air suspension system.

Referring to fig. 7, fig. 7 is a structural view illustrating a second coupling bolt 53 of the air suspension system with the X-shaped thrust rod according to an embodiment of the present application.

Specifically, as shown in fig. 7, the X-shaped thrust rod 5 and the vehicle cross member 3 are connected by a second connecting bolt 53, and the second connecting bolt 53 has engaging teeth at the top.

Preferably, the meshing teeth are distributed on the surface of the second connecting bolt 53 close to the vehicle cross beam 3 to prevent the second connecting bolt 53 after installation from loosening compared with the contact surface of the vehicle cross beam 3, wherein the second connecting bolt 53 is a 12.9-grade bolt, and the number of the meshing teeth is 60-80. In addition, during the installation of the second connecting bolt 53, the second connecting bolt 53 needs to be pre-glued and then installed, so as to play a role in preventing looseness.

Further, the contact surface of the X-thrust bar with the vehicle cross member 3 is at an angle to the vehicle cross member 3 to facilitate the assembly of the second connecting bolt 53 and the disassembly work that may be involved in the subsequent maintenance of the vehicle air suspension.

In an embodiment of the present application, the first suspension system further comprises a bracket arm 7, wherein a longitudinal direction of the bracket arm 7 is parallel to a longitudinal direction of the I-shaped thrust rod 4. And the trailing arm 7 is attached to the vehicle center rear axle 2, and the trailing arm 7 includes a first arm 71 and a second arm 72 on both sides of the junction thereof with the vehicle center rear axle 2. The first arm 71 is closer to the fixing bracket 1 than the second arm 72, and the length of the first arm 71 is not equal to that of the second arm 72.

Preferably, the length of the first arm 71 is smaller than the length of the second arm 72.

That is, the junction of the trailing arm 7 with the rear axle 2 in the vehicle divides the trailing arm 7 into two contiguous first and second arms 71, 72. And the joint of the bracket arm 7 and the rear axle 2 in the vehicle is positioned at the position where the bracket arm 7 deviates from the center of the bracket arm 7, and the length of one end close to the fixed bracket 1 is smaller than that of one end far away from the fixed bracket 1.

In one embodiment of the present application, the first suspension system includes a plurality of air springs 73, and the plurality of air springs 73 are installed at both ends of the bracket 7 to connect the vehicle body and the bracket 7, so as to slow down the transmission of the vibration generated during the vehicle traveling from the vehicle frame to the vehicle body, thereby improving the driving experience.

Further, the plurality of air springs 73 includes a first air spring 73 and a second air spring 73. Wherein the first air spring 73 is closer to the fixing bracket 1 than the second air spring 73.

That is, the distance from the first air spring 73 to the joint of the bracket arm 7 and the rear axle 2 in the vehicle is smaller than the distance from the second air spring 73 to the joint of the bracket arm 7 and the rear axle 2 in the vehicle. So as to ensure the designed wheel base of the rear axle 2 in the vehicle and ensure the installation and arrangement space of the second air spring 73, the rear axle 2 in the vehicle and the actuator.

In one embodiment of the present application, the first suspension system further includes a plurality of adapter seats 74, and the bracket 7 and the air spring 73 are connected by the adapter seats 74. The adapter 74 is arranged between the air spring 73 and the bracket 7, so that the contact of the bladder skin of the air spring 73 with the bracket 7 can be effectively prevented, and the air spring 73 can be protected, and the service life of the air spring 73 can be prolonged.

In addition, in another embodiment, the present application further provides a vehicle including the air suspension system of any of the above embodiments. The air suspension system is mounted on a vehicle.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.