Suspension system and vehicle

Abstract

The application relates to the technical field of suspension systems, and discloses a suspension system and a vehicle, the suspension system comprising a vehicle frame, an axle assembly and a connecting rod assembly, the axle assembly comprising a first hub support, a second hub support and an axle body, the first hub support and the second hub support being fixedly installed on the two sides of the axle body along a first direction, the connecting rod assembly comprising a first transverse connecting rod, a second transverse connecting rod and a pull rod, the pull rod having a first end and a second end along the length direction of the pull rod, the pull rod being rotatably arranged on the vehicle frame, one end of the first transverse connecting rod being movably connected with the first end, the other end of the first transverse connecting rod being movably connected with the first hub support, one end of the second transverse connecting rod being movably connected with the second end, and the other end of the second transverse connecting rod being movably connected with the axle body close to the second hub support. Thus, the road surface excitation transmitted to the cockpit by the vehicle frame is reduced, and the reliability of the chassis is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of suspension systems, and in particular to a suspension system and a vehicle. BACKGROUND

[0002] With the rapid development of the automobile industry, the types of automobile power are increasingly diversified, such as plug-in hybrid vehicles, extended-range hybrid vehicles, and new energy vehicles such as pure electric vehicles, which are developing rapidly. However, the above new energy vehicles are heavier than traditional fuel vehicles, so the reliability requirements of the automobile chassis are also higher, and the suspension, as an important part of the chassis, directly affects the reliability performance of the chassis.

[0003] In related technologies, in order to improve the reliability of the chassis, some vehicle models use five-link suspension structures to bear the vehicle body, but for heavy new energy vehicles, the traditional five-link suspension structure is difficult to meet the use requirements, and the road excitation received by the wheels is easily transmitted to the cockpit through the rear axle, thus being not conducive to the suppression of the vehicle road noise, and affecting the reliability of the chassis. SUMMARY

[0004] The present application provides a suspension system and a vehicle, which solves the technical problems of large vehicle road noise and large cockpit vibration, and improves the reliability of the chassis.

[0005] In order to achieve the above purpose, the main technical scheme adopted by the present application includes:

[0006] In a first aspect, the present application provides a suspension system, comprising:

[0007] a vehicle frame;

[0008] a vehicle axle assembly, the vehicle axle assembly comprising a first hub support, a second hub support, and a vehicle axle body, the first hub support and the second hub support being fixedly installed on both sides of the vehicle axle body along a first direction;

[0009] a link assembly, the link assembly comprising a first transverse link, a second transverse link, and a pull rod, the pull rod having a first end and a second end along a length direction of the pull rod, the pull rod being rotatably arranged on the vehicle frame, and a rotation center of the pull rod being located between the first end and the second end, one end of the first transverse link being movably connected with the first end, the other end of the first transverse link being movably connected with the first hub support, one end of the second transverse link being movably connected with the second end, and the other end of the second transverse link being movably connected with the vehicle axle body close to the second hub support.

[0010] According to the suspension system provided in the first aspect of the present application, through the cooperation of the first transverse connecting rod, the second transverse connecting rod and the pull rod, the road excitation received by the vehicle can be well balanced between the first wheel hub support and the second wheel hub support, which is beneficial to reduce the road excitation transmitted to the driver's cabin through the vehicle frame, thus improving the reliability of the chassis and reducing the road noise of the whole vehicle.

[0011] Optionally, the first transverse connecting rod is movably connected with the first end and the first wheel hub support through the bushings, and the second transverse connecting rod is movably connected with the second end and the vehicle body through the bushings.

[0012] In this way, the bushings are used as flexible kinetic energy absorbing members to absorb the impact generated by the connecting rod assembly in torsion, deflection and longitudinal displacement, which is beneficial to further improve the stability of the suspension and thus improve the reliability of the chassis.

[0013] Optionally, the connecting rod assembly further comprises a connecting support fixedly installed on one side of the vehicle frame close to the vehicle axle assembly, and the pull rod is rotatably arranged on the connecting support.

[0014] In this way, the connecting support is arranged to disperse the force, so that part of the road excitation is attenuated by the connecting support before being transmitted to the vehicle frame, thereby further reducing the road excitation transmitted to the driver's cabin.

[0015] Optionally, it further comprises a first elastic member and a second elastic member, wherein along the second direction, one end of the first elastic member is fixedly installed in the first wheel hub support, and the other end of the first elastic member is connected with the vehicle frame for supporting the vehicle frame.

[0016] Along the second direction, one end of the second elastic member is fixedly installed in the second wheel hub support, and the other end of the second elastic member is connected with the vehicle frame for supporting the vehicle frame, wherein the first direction is perpendicular to the second direction.

[0017] In this way, by arranging part of the first elastic member in the first wheel hub support and part of the second elastic member in the second wheel hub support, the space requirement of the suspension system in the height direction of the vehicle is reduced, thereby providing more arrangement space for the lower vehicle body in the height direction and meeting the arrangement requirements of the new energy automobile battery pack and the oil tank.

[0018] Optionally, along the second direction, the fixed mounting point of the first elastic member on the first wheel hub support is lower than the vehicle body.

[0019] Along the second direction, the fixed mounting point of the second elastic member on the second wheel hub support is lower than the vehicle body.

[0020] In this way, the space occupied by the suspension system in the height direction of the vehicle can be further reduced, so that more arrangement space in the height direction of the lower vehicle body can be provided.

[0021] Optionally, the vehicle axle assembly further comprises a first longitudinal connecting rod and a second longitudinal connecting rod, the first longitudinal connecting rod and the second longitudinal connecting rod are symmetrically arranged relative to the vehicle axle assembly in the first direction, the first longitudinal connecting rod is connected between the vehicle frame and the first hub support, and the second longitudinal connecting rod is connected between the vehicle frame and the second hub support.

[0022] In this way, the first longitudinal connecting rod and the second longitudinal connecting rod can be used to control the longitudinal motion trajectory of the first hub support and the second hub support, and can also be used to absorb the vibration and longitudinal force transmitted from the first hub support and the second hub support to the vehicle frame, so that the transmission path of the longitudinal force is optimized, and the first longitudinal connecting rod and the second longitudinal connecting rod are in the form of a rod, so that the structure is simple, a cast part can be used, and cost can be saved.

[0023] Optionally, the vehicle axle assembly further comprises a third longitudinal connecting rod and a fourth longitudinal connecting rod, the third longitudinal connecting rod and the fourth longitudinal connecting rod are symmetrically arranged relative to the vehicle axle assembly in the first direction, and the third longitudinal connecting rod and the fourth longitudinal connecting rod are both connected between the vehicle frame and the vehicle axle body, wherein in the first direction, the third longitudinal connecting rod and the fourth longitudinal connecting rod are located between the first longitudinal connecting rod and the second longitudinal connecting rod, the third longitudinal connecting rod is closer to the first longitudinal connecting rod than the fourth longitudinal connecting rod, and the fourth longitudinal connecting rod is closer to the second longitudinal connecting rod than the third longitudinal connecting rod.

[0024] In the second direction, the third longitudinal connecting rod is higher than the first longitudinal connecting rod, and the fourth longitudinal connecting rod is higher than the second longitudinal connecting rod, wherein the first direction is perpendicular to the second direction.

[0025] In this way, the third longitudinal connecting rod and the fourth longitudinal connecting rod can absorb the vibration and longitudinal force transmitted from the vehicle axle body to the vehicle frame, and cooperate with the first longitudinal connecting rod and the second longitudinal connecting rod to further optimize the transmission path of the longitudinal force, and the third longitudinal connecting rod and the fourth longitudinal connecting rod can also be in the form of a rod, so that the structure is simple and cost can be saved.

[0026] Optionally, the vehicle axle assembly further comprises a first connecting support and a second connecting support, the first connecting support and the second connecting support are fixedly arranged on the vehicle axle body, the third longitudinal connecting rod is connected between the vehicle frame and the first connecting support, the fourth longitudinal connecting rod is connected between the vehicle frame and the second connecting support, and the second transverse connecting rod is connected between the pull rod and the second connecting support.

[0027] In this way, by arranging the first connecting support to provide a connecting point for the third longitudinal connecting rod and the axle body, the third longitudinal connecting rod and the axle body are connected conveniently, and meanwhile, by arranging the second connecting support to provide a connecting point for the fourth longitudinal connecting rod and the axle body and the second transverse connecting rod and the axle body, the function of the second connecting support is reused, and the number of parts is reduced.

[0028] Optionally, the second connecting support comprises a first mounting member and a second mounting member, the first mounting member and the second mounting member are fixedly arranged on the axle body, and the first mounting member is fixedly connected with the second mounting member, the first mounting member, the second mounting member and the axle body jointly form a mounting cavity, the fourth longitudinal connecting rod is connected between the frame and the first mounting member, and the second transverse connecting rod is connected between the pull rod and the second mounting member.

[0029] In this way, the first mounting member and the second mounting member can support each other, and meanwhile, the first mounting member, the second mounting member and the axle body jointly form a mounting cavity, so that the strength of the second connecting support is greatly improved, and the stability of the fourth longitudinal connecting rod and the second transverse connecting rod mounted on the second connecting support is improved.

[0030] Optionally, the first buffer member and the second buffer member are further arranged, the first elastic member comprises a first coil spring, and the first buffer member is arranged in the first coil spring and connected with the frame along the second direction;

[0031] The second elastic member comprises a second coil spring, and the second buffer member is arranged in the second coil spring and connected with the frame along the second direction.

[0032] In this way, when the vehicle is driven on the road, the first buffer member and the second buffer member can provide certain damping, so as to reduce the vibration of the frame, and the buffering capacity of the suspension system is improved, and meanwhile, the first buffer member and the second buffer member are arranged in the corresponding coil springs, so that the space occupied by the suspension system in the height direction of the vehicle is further reduced.

[0033] Optionally, the first shock absorber and the second shock absorber are further arranged, the first shock absorber and the second shock absorber are symmetrically arranged with respect to the axle assembly along the first direction, the first shock absorber is connected between the frame and the first hub support, and the second shock absorber is connected between the frame and the second hub support.

[0034] In this way, the first shock absorber and the second shock absorber can absorb the vibration and the vertical force transmitted by the first hub support and the second hub support to the frame, so that the damping performance of the suspension system is improved, and the use performance of the chassis is improved.

[0035] In a second aspect, the embodiments of the present application provide a vehicle comprising the suspension system in the first aspect.

[0036] The vehicle provided by the second aspect embodiment of the present application is provided with the suspension system, the road excitation received by the vehicle can be well balanced between the first wheel hub support and the second wheel hub support through the cooperation of the first transverse connecting rod, the second transverse connecting rod and the pull rod, and the road excitation transmitted to the driver cabin through the vehicle frame is reduced, so that the reliability of the chassis is improved, and the road noise of the whole vehicle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed to be used in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0038] Figure 1 The front view of the suspension system provided by one embodiment of the present application is provided.

[0039] Figure 2 The perspective view of the suspension system provided by one embodiment of the present application is provided.

[0040] Figure 3 The perspective view of the suspension system provided by another embodiment of the present application is provided.

[0041] Figure 4 The perspective view of the suspension system provided by another embodiment of the present application is provided.

[0042] Figure 5 The top view of the suspension system provided by one embodiment of the present application is provided.

[0043] Figure 6 The side view of the suspension system provided by one embodiment of the present application is provided.

[0044] Figure 7 The partial enlarged view of the suspension system provided by one embodiment of the present application is provided.

[0045]

Explanation of reference signs

[0046] Suspension system 100;

[0047] Vehicle frame 1;

[0048] Axle assembly 2; first wheel hub support 21; second wheel hub support 22; axle body 23;

[0049] Connecting rod assembly 3; first transverse connecting rod 31; second transverse connecting rod 32; pull rod 33; connecting support 34;

[0050] First elastic member 4; first coil spring 41; second elastic member 5; second coil spring 51; first longitudinal connecting rod 6; second longitudinal connecting rod 7; third longitudinal connecting rod 8; fourth longitudinal connecting rod 9; first buffer 10; second buffer 11; first shock absorber 12; second shock absorber 13; first connecting bracket 14; second connecting bracket 15; first mounting member 151; second mounting member 152;

[0051] First direction X; second direction Y. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0054] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "attachment" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The term "and / or" in the present application is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0057] "Multiple" appearing in the present application refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0058] With the rapid development of the automobile industry, the types of automobile power are increasingly diversified, such as plug-in hybrid vehicles, extended-range hybrid vehicles, and new energy vehicles such as pure electric vehicles, which are developing rapidly. However, the above new energy vehicles are heavier than traditional fuel vehicles, so the reliability requirements of the automobile chassis are also higher, and the suspension, as an important part of the chassis, directly affects the reliability performance of the chassis.

[0059] In the related art, in order to improve the reliability of the chassis, some vehicle models use a five-link suspension structure to bear the vehicle body, but for heavy new energy vehicles, the traditional five-link suspension structure is difficult to meet the use requirements, and the road excitation received by the wheels is easily transmitted to the driver's cabin through the rear axle, thus being not conducive to the suppression of the vehicle road noise and affecting the reliability of the chassis.

[0060] Based on this, the present application proposes a suspension system 100, which uses the first transverse connecting rod 31, the second transverse connecting rod 32 and the pull rod 33 in cooperation, so that the road excitation received by the vehicle can be well balanced between the first hub bracket 21 and the second hub bracket 22, which is conducive to reducing the road excitation transmitted to the driver's cabin through the vehicle frame 1, thus not only improving the reliability of the chassis, but also reducing the vehicle road noise.

[0061] As shown in Figures 1-7 , the suspension system 100 according to the first aspect of the present application comprises a vehicle frame 1, an axle assembly 2 and a connecting rod assembly 3.

[0062] The axle assembly 2 comprises a first hub bracket 21, a second hub bracket 22 and an axle body 23, and the first hub bracket 21 and the second hub bracket 22 are fixedly installed on both sides of the axle body 23 along the first direction X, i.e. along the width direction of the vehicle. It can be understood that the first hub bracket 21 and the second hub bracket 22 are symmetrically arranged, for example, with the suspension system 100 placed in the direction shown in the figure, the first hub bracket 21 is used to install the left wheel of the vehicle, and the second hub bracket 22 is used to install the right wheel of the vehicle. Figure 1

[0063] ​Further, the linkage assembly 3 comprises a first lateral linkage 31, a second lateral linkage 32 and a pull rod 33, the pull rod 33 has a first end and a second end along the length direction of the pull rod 33, the pull rod 33 is rotatably arranged on the frame 1, it is necessary to point out that, as shown in Figure 4 the center of rotation of the pull rod 33 is located between the first end and the second end, wherein one end of the first lateral linkage 31 is movably connected with the first end of the pull rod 33, the other end of the first lateral linkage 31 is movably connected with the first hub bracket 21, one end of the second lateral linkage 32 is movably connected with the second end of the pull rod 33, the other end of the second lateral linkage 32 is movably connected with the axle body 23 close to the second hub bracket 22, that is, as shown in Figure 1 the first lateral linkage 31 and the second lateral linkage 32 are respectively arranged on the left and right sides of the pull rod 33, the first lateral linkage 31 is movably connected between the left first hub bracket 21 and the first end of the pull rod 33, the second lateral linkage 32 is movably connected between the right axle body 23 and the second end of the pull rod 33.

[0064] In the process of vehicle driving, the road excitation received by the vehicle is conducted through the left and right wheels, wherein the road excitation received by the left wheel is directly transmitted to the first hub bracket 21, part of the road excitation received by the first hub bracket 21 is transmitted to the first end of the pull rod 33 through the first lateral linkage 31, assuming that the first lateral linkage 31 gives the first end of the pull rod 33 a thrust, then the second end of the pull rod 33 will form a reverse pulling force, and the reverse pulling force is applied to the second lateral linkage 32, and then the reaction force is transmitted to the second hub bracket 22 through the second lateral linkage 32 and the axle body 23, in this way, the right wheel affected by part of the road excitation received by the left wheel, not only is beneficial to realize the balance of the left and right wheel forces, improve the grip of the left and right wheels, but also reduces the road excitation transmitted to the frame 1 by the first hub bracket 21, improves the reliability of the chassis, and is also beneficial to improve the comfort of the driver's cabin and reduce the road noise of the whole vehicle. It can be understood that, assuming that the first lateral linkage 31 gives the first end of the pull rod 33 a pulling force, then the second end of the pull rod 33 will form a reverse thrust, and the reverse thrust is applied to the second lateral linkage 32, the specific action mechanism is similar to the above, which will not be described here.

[0065] Further, when the road excitation received by the right wheel is transmitted to the second hub support 22, it can be transmitted to the second end of the pull rod 33 through the second lateral connecting rod 32, assuming that the second lateral connecting rod 32 gives the second end of the pull rod 33 a pushing force, then the first end of the pull rod 33 will form a reverse pulling force, and the reverse pulling force is applied to the first lateral connecting rod 31, and then the reaction force is transmitted to the first hub support 21 through the first lateral connecting rod 31, so that the left wheel affected by part of the road excitation of the right wheel is also beneficial to realize the balance of the left and right wheels, thereby improving the grip of the left and right wheels, and reducing the road excitation transmitted to the vehicle frame 1 by the second hub support 22, further improving the reliability of the chassis, and also beneficial to further improve the comfort of the driver's cabin and reduce the road noise of the vehicle. It can be understood that, assuming that the second lateral connecting rod 32 gives the second end of the pull rod 33 a pulling force, then the first end of the pull rod 33 will form a reverse pushing force, and the reverse pushing force is applied to the first lateral connecting rod 31, and the specific action mechanism is similar to the above, which will not be repeated here.

[0066] It should be noted that when the left and right wheels of the vehicle are excited by the road, the first and second ends of the pull rod 33 move in a small range in the height direction of the vehicle (i.e. the second direction Y) under the cooperation of the first lateral connecting rod 31, the second lateral connecting rod 32 and the pull rod 33, wherein the second lateral connecting rod 32 is arranged on the axle body 23, which can effectively reduce the length of the second lateral connecting rod 32 compared to arranging the second lateral connecting rod 32 directly on the second hub support 22. This can optimize the structural design on the one hand, avoid the second lateral connecting rod 32 occupying more space, and by reducing the length of the second lateral connecting rod 32, it is also beneficial to reduce the movement distance of the first and second ends of the pull rod 33 in the height direction of the vehicle (i.e. the second direction Y), which is beneficial to reduce the change amount of the toe angle during the up and down movement of the wheel.

[0067] In summary, according to the suspension system 100 provided in the first aspect of the present application, when part of the road excitation is transmitted to the first hub support 21, the first transverse connecting rod 31 drives the pull rod 33 to rotate through the first end of the pull rod 33, and the reaction force is transmitted to the second transverse connecting rod 32 through the second end of the pull rod 33, so as to be transmitted to the second hub support 22 through the second transverse connecting rod 32 and the axle body 23, thereby reducing the road excitation transmitted to the vehicle frame 1. Similarly, when part of the road excitation is transmitted to the axle body 23, the second transverse connecting rod 32 drives the pull rod 33 to rotate through the second end of the pull rod 33, and the reaction force is transmitted to the first transverse connecting rod 31 through the first end of the pull rod 33, so as to be transmitted to the first hub support 21 through the first transverse connecting rod 31, thereby also reducing the road excitation transmitted to the vehicle frame 1. Thus, through the cooperation of the first transverse connecting rod 31, the second transverse connecting rod 32 and the pull rod 33, the road excitation received by the vehicle can be well balanced between the first hub support 21 and the second hub support 22, which is conducive to reducing the road excitation transmitted to the driver's cabin through the vehicle frame 1. In this way, not only the reliability of the chassis is improved, but also the road noise of the whole vehicle is reduced.

[0068] In some embodiments of the present application, the first transverse connecting rod 31 is movably connected with the first end and the first hub support 21 through a bushing, and the second transverse connecting rod 32 is movably connected with the second end and the axle body 23 through a bushing.

[0069] Specifically, the first end of the pull rod 33 is provided with a bushing at the connection with the first transverse connecting rod 31, and the first end of the pull rod 33 is rotatably connected with the first transverse connecting rod 31 through the bushing. The second end of the pull rod 33 is also provided with a bushing at the connection with the second transverse connecting rod 32, and the second end of the pull rod 33 is rotatably connected with the second transverse connecting rod 32 through the bushing. Further, the connection between the first transverse connecting rod 31 and the first hub support 21 is provided with a bushing, and the first transverse connecting rod 31 is rotatably connected with the first hub support 21 through the bushing. The connection between the second transverse connecting rod 32 and the axle body 23 is provided with a bushing, and the second transverse connecting rod 32 is rotatably connected with the axle body 23 through the bushing. In this way, the bushing is used as a flexible kinetic energy absorbing member, which can absorb the impact generated by the longitudinal displacement, torsion and deflection of the connecting rod assembly 3, thereby further improving the stability of the suspension and the reliability of the chassis.

[0070] In some embodiments of the present application, as Figures 1-5As shown, the connecting rod assembly 3 further comprises a connecting bracket 34 fixedly installed on the vehicle frame 1 near the side of the axle assembly 2, and the pull rod 33 is rotatably arranged on the connecting bracket 34. That is, the pull rod 33 is connected with the vehicle frame 1 through the connecting bracket 34, the connecting bracket 34 is arranged below the vehicle frame 1, the connecting bracket 34 is formed with a mounting space, and the pull rod 33 is rotatably connected with the connecting bracket 34. By arranging the connecting bracket 34, the force dispersion can be realized, so that part of the road excitation is transmitted to the connecting bracket 34 and then to the vehicle frame 1 after attenuation, thereby facilitating further reduction of the road excitation transmitted to the driver's cabin.

[0071] In some embodiments of the present application, as shown in Figures 1-5 and Figure 7 As shown, further comprising: a first elastic member 4 and a second elastic member 5, along the second direction Y, one end of the first elastic member 4 is fixedly installed in the first hub bracket 21, and the other end of the first elastic member 4 is connected with the vehicle frame 1 for supporting the vehicle frame 1, along the second direction Y, one end of the second elastic member 5 is fixedly installed in the second hub bracket 22, and the other end of the second elastic member 5 is connected with the vehicle frame 1 for supporting the vehicle frame 1, wherein the first direction X is perpendicular to the second direction Y.

[0072] It should be noted that the lower vehicle body of the new energy vehicle needs to have more space in the vehicle height direction for the arrangement of the battery pack and the oil tank. However, the lower vehicle body in the suspension system 100 currently occupies a large space in the vehicle height direction, and it is difficult to have more space for the arrangement of the battery pack and the oil tank.

[0073] Based on this, in the present application, the first elastic member 4 in the suspension system 100 is arranged on the first hub bracket 21, and the second elastic member 5 is arranged on the second hub bracket 22. Specifically, as shown in Figure 1 in the width direction of the vehicle, the first elastic member 4 and the second elastic member 5 are symmetrically arranged, in the height direction of the vehicle, one end of the first elastic member 4 is fixedly installed in the first hub bracket 21, and the other end of the first elastic member 4 is connected with the vehicle frame 1 for supporting the vehicle frame 1, similarly, one end of the second elastic member 5 is fixedly installed in the second hub bracket 22, and the other end of the second elastic member 5 is connected with the vehicle frame 1 for supporting the vehicle frame 1, in this way, by arranging part of the first elastic member 4 in the first hub bracket 21 and part of the second elastic member 5 in the second hub bracket 22, the space requirement of the suspension system 100 in the vehicle height direction is reduced, thereby providing more arrangement space for the lower vehicle body in the height direction, and meeting the arrangement requirements of the battery pack and the oil tank of the new energy vehicle.

[0074] In some embodiments of the present application, as shown in Figures 1-5As shown, along the second direction Y, the mounting point of the first elastic element 4 and the first wheel hub bracket 21 is lower than the axle body 23. Similarly, along the second direction Y, the mounting point of the second elastic element 5 and the second wheel hub bracket 22 is lower than the axle body 23. That is, part of the first elastic element 4 is disposed within the first wheel hub bracket 21, and in the vehicle height direction, the mounting point of the first elastic element 4 is lower than the axle body 23. Likewise, part of the second elastic element 5 is disposed within the second wheel hub bracket 22, and in the vehicle height direction, the mounting point of the second elastic element 5 is also lower than the axle body 23. This arrangement further reduces the space occupied by the suspension system 100 in the vehicle height direction, thereby providing more space for the lower body in the height direction.

[0075] In some embodiments of this application, such as Figures 2-5 As shown, it also includes: a first longitudinal link 6 and a second longitudinal link 7, which are symmetrically arranged relative to the axle assembly 2 along the first direction X, i.e., in the width direction of the vehicle. The first longitudinal link 6 connects the frame 1 and the first wheel hub bracket 21, and the second longitudinal link 7 connects the frame 1 and the second wheel hub bracket 22. With this arrangement, the first longitudinal link 6 and the second longitudinal link 7 can be used to control the longitudinal movement trajectory of the first wheel hub bracket 21 and the second wheel hub bracket 22. At the same time, they can also be used to absorb the vibration and longitudinal force transmitted to the frame 1 by the first wheel hub bracket 21 and the second wheel hub bracket 22, thus optimizing the transmission path of the longitudinal force. Moreover, the first longitudinal link 6 and the second longitudinal link 7 are rod-shaped structures, which are relatively simple to construct and can be made of castings, which helps to save costs.

[0076] Furthermore, one end of the first longitudinal link 6 can be connected to the vehicle frame 1 through a flexible kinetic energy absorber such as a bushing, and the other end can be connected to the first wheel hub bracket 21 through a flexible kinetic energy absorber such as a bushing. With this configuration, the bushing can absorb the impact generated by the first longitudinal link 6 during torsion, deflection, and longitudinal displacement, which is beneficial to improving the stability of the suspension. Similarly, one end of the second longitudinal link 7 can be connected to the vehicle frame 1 through a flexible kinetic energy absorber such as a bushing, and the other end can be connected to the second wheel hub bracket 22 through a flexible kinetic energy absorber such as a bushing. With this configuration, the bushing can absorb the impact generated by the second longitudinal link 7 during torsion, deflection, and longitudinal displacement, which is beneficial to further improving the stability of the suspension.

[0077] In some embodiments of this application, such as Figures 2-5As shown, the vehicle further comprises: a third longitudinal connecting rod 8 and a fourth longitudinal connecting rod 9, the third longitudinal connecting rod 8 and the fourth longitudinal connecting rod 9 are symmetrically arranged relative to the axle assembly 2 along a first direction X, i.e. in the width direction of the vehicle, and the third longitudinal connecting rod 8 and the fourth longitudinal connecting rod 9 are both connected between the vehicle frame 1 and the axle body 23, wherein along the first direction X, the third longitudinal connecting rod 8 and the fourth longitudinal connecting rod 9 are both located between the first longitudinal connecting rod 6 and the second longitudinal connecting rod 7, and the third longitudinal connecting rod 8 is closer to the first longitudinal connecting rod 6 than the fourth longitudinal connecting rod 9, and the fourth longitudinal connecting rod 9 is closer to the second longitudinal connecting rod 7 than the third longitudinal connecting rod 8, and along a second direction Y, the third longitudinal connecting rod 8 is higher than the first longitudinal connecting rod 6, and the fourth longitudinal connecting rod 9 is higher than the second longitudinal connecting rod 7, wherein the first direction X is perpendicular to the second direction Y. In this way, it is ensured that the connection points of the first longitudinal connecting rod 6, the second longitudinal connecting rod 7, the third longitudinal connecting rod 8 and the fourth longitudinal connecting rod 9 with the vehicle frame are all different, and the first longitudinal connecting rod 6 and the third longitudinal connecting rod 8 on the left side are staggered, and the second longitudinal connecting rod 7 and the fourth longitudinal connecting rod 9 on the right side are staggered, which can prevent interference of the four longitudinal connecting rods, wherein the third longitudinal connecting rod 8 and the fourth longitudinal connecting rod 9 can further absorb the vibration and longitudinal force transmitted from the axle body 23 to the vehicle frame 1, cooperate with the first longitudinal connecting rod 6 and the second longitudinal connecting rod 7, and further optimize the transmission path of the longitudinal force, and the third longitudinal connecting rod 8 and the fourth longitudinal connecting rod 9 can also be constructed as a rod structure, which is relatively simple in structure and is conducive to saving costs.

[0078] Further, one end of the third longitudinal connecting rod 8 can be connected to the vehicle frame 1 through a flexible kinetic energy absorbing member such as a bushing, and the other end can be connected to the axle body 23 through a flexible kinetic energy absorbing member such as a bushing, in this way, the bushing can absorb the impact generated by the torsion, deflection and longitudinal displacement of the third longitudinal connecting rod 8, which is conducive to improving the stability of the suspension, similarly, one end of the fourth longitudinal connecting rod 9 can be connected to the vehicle frame 1 through a flexible kinetic energy absorbing member such as a bushing, and the other end can be connected to the axle body 23 through a flexible kinetic energy absorbing member such as a bushing, in this way, the bushing can absorb the impact generated by the torsion, deflection and longitudinal displacement of the fourth longitudinal connecting rod 9, which is conducive to further improving the stability of the suspension.

[0079] In some embodiments of the present application, the vehicle further comprises: a first connecting bracket 14 and a second connecting bracket 15, the first connecting bracket 14 and the second connecting bracket 15 are both fixedly arranged on the axle body 23, the third longitudinal connecting rod 8 is connected between the vehicle frame 1 and the first connecting bracket 14, the fourth longitudinal connecting rod 9 is connected between the vehicle frame 1 and the second connecting bracket 15, and the second transverse connecting rod 32 is connected between the pull rod 33 and the second connecting bracket 15.

[0080] Specifically, one end of the third longitudinal connecting rod 8 is connected with the frame 1, and the other end is connected with the axle body 23 through the first connecting support 14. In this way, the first connecting support 14 provides a connecting point for the third longitudinal connecting rod 8 and the axle body 23, facilitating the connection of the third longitudinal connecting rod 8 and the axle body 23. The first connecting support 14 can be a one-piece component, and the first connecting support 14 can also be formed with a semi-enclosed space or a closed cavity, which is beneficial to improve the strength of the first connecting support 14, and in turn is beneficial to improve the connection strength of the third longitudinal connecting rod 8 and the axle body 23.

[0081] Further, one end of the fourth longitudinal connecting rod 9 is connected with the frame 1, and the other end is connected with the axle body 23 through the second connecting support 15. One end of the second transverse connecting rod 32 is connected with the pull rod 33, and the other end is connected with the axle body 23 through the second connecting support 15. That is, the second connecting support 15 provides connecting points for the fourth longitudinal connecting rod 9 and the axle body 23 and the second transverse connecting rod 32 and the axle body 23 respectively, that is, the function of the second connecting support 15 is reused, which is beneficial to reduce the number of parts. It can be understood that the second connecting support 15 can be a one-piece component, and the second connecting support 15 can also be formed with a semi-enclosed space or a closed cavity, which is beneficial to improve the strength of the second connecting support 15, and in turn is beneficial to improve the connection strength of the fourth longitudinal connecting rod 9, the second transverse connecting rod 32 and the axle body 23.

[0082] In some embodiments of the present application, the second connecting support 15 includes a first mounting member 151 and a second mounting member 152. The first mounting member 151 and the second mounting member 152 are both fixedly arranged on the axle body 23, and the first mounting member 151 is fixedly connected with the second mounting member 152. The first mounting member 151, the second mounting member 152 and the axle body 23 jointly form a mounting cavity. The fourth longitudinal connecting rod 9 is connected between the frame 1 and the first mounting member 151, and the second transverse connecting rod 32 is connected between the pull rod 33 and the second mounting member 152.

[0083] Specifically, the second connecting bracket 15 provides mounting points for the fourth longitudinal connecting rod 9 and the second transverse connecting rod 32 in the suspension system, and further, in some embodiments of the present application, the first mounting member 151 of the second connecting bracket 15 is used to mount the fourth longitudinal connecting rod 9, and the second mounting member 152 of the second connecting bracket 15 is used to mount the second transverse connecting rod 32, wherein the first mounting member 151 and the second mounting member 152 are both welded on the axle body 23, and the first mounting member 151 and the second mounting member 152 are welded by a welding surface and fixed by bolt connection, so that the first mounting member 151 and the second mounting member 152 can support each other, and at the same time, the first mounting member 151, the second mounting member 152 and the axle body 23 also jointly form a mounting cavity, so that the strength of the second connecting bracket 15 can be greatly improved, and the stability of the fourth longitudinal connecting rod 9 and the second transverse connecting rod 32 mounted on the second connecting bracket 15 can be improved.

[0084] In some embodiments of the present application, as shown in Figures 2-4 , further comprising: a first buffer 10 and a second buffer 11, the first elastic member 4 has a first coil spring 41, along the second direction Y, the first buffer 10 is arranged in the first coil spring 41 and connected with the frame 1, the second elastic member 5 has a second coil spring 51, along the second direction Y, the second buffer 11 is arranged in the second coil spring 51 and connected with the frame 1.

[0085] Specifically, the first elastic member 4 has a first coil spring 41, one end of the first coil spring 41 is fixedly installed in the first hub bracket 21, the second elastic member 5 has a second coil spring 51, one end of the second coil spring 51 is fixedly installed in the second hub bracket 22, and the other end of the first elastic member 4 and the other end of the second elastic member 5 are both connected with the frame 1 and used to support the frame 1, and further, as shown in Figure 3 , the lower part of the frame 1 is respectively provided with the first buffer 10 and the second buffer 11, the first buffer 10 is arranged in the first coil spring 41, and the second buffer 11 is arranged in the second coil spring 51, when the vehicle is driven on the road and is excited by the road, the first hub bracket 21 is driven by the wheel to jump up to abut and buffer the first buffer 10, and the second hub bracket 21 is driven by the wheel to jump up to abut and buffer the second buffer 11, that is, the first buffer 10 and the second buffer 11 can provide a certain buffer damping, so as to reduce the vibration of the frame 1, and improve the buffering capacity of the suspension system 100, and further, the first buffer 10 and the second buffer 11 are arranged in the corresponding coil springs, so as to further reduce the space occupation of the suspension system 100 in the height direction of the vehicle.

[0086] In some embodiments of the present application, as shown in Figures 1-7The first shock absorber 12 and the second shock absorber 13 are symmetrically arranged relative to the axle assembly 2 along the first direction X, that is, in the width direction of the vehicle, and the first shock absorber 12 is connected between the vehicle frame 1 and the first hub bracket 21, and the second shock absorber 13 is connected between the vehicle frame 1 and the second hub bracket 22. In this way, the first shock absorber 12 and the second shock absorber 13 can absorb the vibration and vertical force transmitted by the first hub bracket 21 and the second hub bracket 22 to the vehicle frame 1, which is beneficial to improve the damping performance of the suspension system 100, thereby improving the use performance of the chassis.

[0087] In a second aspect, the embodiments of the present application provide a vehicle comprising the suspension system 100 in the first aspect.

[0088] According to the vehicle in the second aspect of the present application, by being provided with the above-mentioned suspension system 100, through the cooperation of the first transverse connecting rod 31, the second transverse connecting rod 32 and the pull rod 33, the road excitation received by the vehicle can be well balanced between the first hub bracket 21 and the second hub bracket 22, which is beneficial to reduce the road excitation transmitted to the driver's cabin through the vehicle frame 1, so as to not only improve the reliability of the chassis, but also reduce the road noise of the whole vehicle.

[0089] It should be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not only include those elements, but also other elements not explicitly listed, or other elements inherent to such process, method, article or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0090] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0091] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

[0092] While embodiments of the application have been described in connection with the preferred embodiments of the various figures, those of ordinary skill in the art will appreciate that various modifications and variations of the preferred embodiments can be employed without departing from the spirit and scope of the application.

Claims

1. A suspension system characterized by, Comprise: A frame; An axle assembly, comprising a first hub bracket, a second hub bracket and an axle body, the first hub bracket and the second hub bracket are fixedly installed on both sides of the axle body respectively along a first direction; A linkage assembly, comprising a first transverse linkage, a second transverse linkage and a pull rod, the pull rod has a first end and a second end along the length direction of the pull rod, the pull rod is rotatably arranged on the frame, and the rotation center of the pull rod is located between the first end and the second end, one end of the first transverse linkage is movably connected with the first end, the other end of the first transverse linkage is movably connected with the first hub bracket, one end of the second transverse linkage is movably connected with the second end, and the other end of the second transverse linkage is movably connected with the axle body close to the second hub bracket.

2. The suspension system of claim 1, wherein, The first transverse linkage is movably connected with the first end and the first hub bracket through a bushing respectively, and the second transverse linkage is movably connected with the second end and the axle body through a bushing respectively.

3. The suspension system of claim 1, wherein, The linkage assembly further comprises a connecting bracket, which is fixedly installed on one side of the frame close to the axle assembly, and the pull rod is rotatably arranged on the connecting bracket.

4. The suspension system of claim 1, wherein Further comprise: A first elastic member and a second elastic member, one end of the first elastic member is fixedly installed in the first hub bracket along a second direction, and the other end of the first elastic member is connected with the frame for supporting the frame; One end of the second elastic member is fixedly installed in the second hub bracket along the second direction, and the other end of the second elastic member is connected with the frame for supporting the frame, wherein the first direction is perpendicular to the second direction.

5. The suspension system of claim 4, wherein, Along the second direction, the fixed mounting point of the first elastic member on the first hub bracket is lower than the axle body; Along the second direction, the fixed mounting point of the second elastic member on the second hub bracket is lower than the axle body.

6. The suspension system of claim 1, wherein Further comprise: A first longitudinal linkage and a second longitudinal linkage, the first longitudinal linkage and the second longitudinal linkage are symmetrically arranged relative to the axle assembly along the first direction, and the first longitudinal linkage is connected between the frame and the first hub bracket, and the second longitudinal linkage is connected between the frame and the second hub bracket.

7. The suspension system of claim 6, wherein Further comprise: A third longitudinal linkage and a fourth longitudinal linkage, the third longitudinal linkage and the fourth longitudinal linkage are symmetrically arranged relative to the axle assembly along the first direction, and the third longitudinal linkage and the fourth longitudinal linkage are both connected between the frame and the axle body, Wherein, along the first direction, the third longitudinal linkage and the fourth longitudinal linkage are both located between the first longitudinal linkage and the second longitudinal linkage, and the third longitudinal linkage is closer to the first longitudinal linkage than the fourth longitudinal linkage, and the fourth longitudinal linkage is closer to the second longitudinal linkage than the third longitudinal linkage; In the second direction, the third longitudinal link is higher than the first longitudinal link, and the fourth longitudinal link is higher than the second longitudinal link, wherein the first direction is perpendicular to the second direction.

8. The suspension system of claim 7, wherein Further comprising: The first connecting bracket and the second connecting bracket are both fixedly arranged on the axle body, the third longitudinal link is connected between the frame and the first connecting bracket, the fourth longitudinal link is connected between the frame and the second connecting bracket, and the second transverse link is connected between the pull rod and the second connecting bracket.

9. The suspension system of claim 8, wherein, The second connecting bracket comprises a first mounting member and a second mounting member, the first mounting member and the second mounting member are both fixedly arranged on the axle body, and the first mounting member is fixedly connected with the second mounting member, the first mounting member, the second mounting member and the axle body jointly form a mounting cavity, the fourth longitudinal link is connected between the frame and the first mounting member, and the second transverse link is connected between the pull rod and the second mounting member.

10. The suspension system of claim 4, wherein Further comprising: The first elastic member has a first coil spring, and the first buffer member is arranged in the first coil spring and connected with the frame in the second direction; The second elastic member has a second coil spring, and the second buffer member is arranged in the second coil spring and connected with the frame in the second direction.

11. The suspension system of claim 1, wherein Further comprising: The first shock absorber and the second shock absorber are symmetrically arranged relative to the axle assembly in the first direction, the first shock absorber is connected between the frame and the first hub bracket, and the second shock absorber is connected between the frame and the second hub bracket.

12. A vehicle characterized by comprising: The suspension system comprises the axle assembly according to any one of claims 1-11.

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