CN210760131U - Air suspension system and vehicle - Google Patents

Abstract

The utility model discloses an air suspension system and vehicle, wherein the air suspension system includes an at least air spring, an at least shock absorber and a guiding mechanism, wherein guiding mechanism includes guide arm support and two guide arms under a V-arrangement distance rod, two, the utility model discloses a V-arrangement distance rod and parallelogram guiding mechanism use on the non-independent air suspension of two gasbags of single axle, guaranteed that the axle is unchangeable at the scope internal inclination of beating, adopted the collection direction, supported and prevent the lower guide arm assembly of heeling function and an organic whole, simplified system architecture, realized integrating and the lightweight of part, through the ingenious design that guiding mechanism and part were arranged, realized the sharing of air suspension and leaf spring balanced suspension's partial part, realized that the spare part strides the platform general, reduced the manufacturing test cost.

Description

Air Suspension Systems and Vehicles

technical field

The utility model relates to the field of machinery, in particular to an air suspension system and a vehicle.

Background technique

The driving system of a vehicle usually includes wheels, frame, axle and suspension. The axle is connected to the frame through the suspension. Wheels are mounted on both ends of the axle. The function of the suspension is to transmit the force and moment acting between the wheel and the frame, and to buffer the impact force transmitted from the uneven road to the frame or the body, to attenuate the vibration caused by it, so as to ensure that the car can run smoothly.

Air suspension is a commonly used suspension, which has the advantages of good ride smoothness, less impact on the road surface, and can realize the height adjustment of the frame. The single-axle double-airbag air suspension is widely used in the current air suspension scheme because of its simple structure and low cost.

The current single-axle double-airbag air suspension 1P mainly includes three parts, a guide mechanism 10P, a damping mechanism 20P and an air spring 30P. The guide mechanism 10P usually adopts a flexible guide arm 11P plus a lateral thrust 12P rod structure, refer to the attached drawings As shown in 1, the guide arm 11 is fixedly connected to the axle through U-shaped bolts, and is hinged to the frame through a rubber bush. The guide arm 11P plays a longitudinal guiding role, and the axle and frame are not shown in the figure. Further, the guide arm 11P can be elastically deformed, and the air spring 30P can act in series. When the axle is twisted, the left and right guide arms 11P deform in the reverse direction, restrain the vehicle from tilting sideways, and at the same time function as a lateral stabilizer. The lateral thrust rod 12P is laterally connected to the frame and the axle to bear the lateral force of the vehicle.

This single-bridge double-airbag structure has the advantages of simple structure and light weight, but there are some problems. One of the problems is that the guide arm 11P needs to be designed with a limited life to ensure a certain deflection, which makes the guide arm 11P need to be replaced periodically. Restricted by the guide mechanism 10P, when the axle twists, the guide arm 11P interferes with the lateral thrust rod 12P, and the extra elastic deformation of the rubber bush and the frame is needed to eliminate the interference. When it is large, the deformation load of the rubber bushing and the frame is large, and problems such as partial cracking of the frame and tearing of the rubber bushing are prone to occur. The guide mechanism 10P itself is similar to the single trailing arm suspension, and the axle inclination changes greatly during the suspension jumping process. If the matching is not good, it will have a greater impact on the efficiency and life of the drive shaft universal joint.

In addition, since the interface between the suspension and the axle and frame is completely different from the leaf spring balance suspension, the interface parts of the suspension, the axle and the frame need to be redesigned and moulded. The overall development investment is large, and the development verification cycle is long

Utility model content

An object of the present invention is to provide an air suspension system and a vehicle, wherein the guide arm of the air suspension system can be designed based on an infinite life.

Another object of the present invention is to provide an air suspension system and a vehicle, wherein the bushing and the frame of the air suspension system of the vehicle may not need to bear the additional deformation load caused by the motion interference from the guide mechanism.

Another object of the present invention is to provide an air suspension system and a vehicle, wherein the lower guide arm assembly of the air suspension system of the vehicle is highly integrated.

Another object of the present invention is to provide an air suspension system and a vehicle, wherein some parts of the air suspension system of the vehicle can be used in common with the original leaf spring balance suspension.

According to one aspect of the present invention, the present invention provides an air suspension system applied to a vehicle, wherein the air suspension system includes:

two air springs;

a V-shaped thrust rod, wherein said V-shaped thrust rod has three ends, two side ends and one intermediate end;

a lower guide arm assembly, wherein the lower guide arm assembly includes a left guide arm and a right guide arm;

Two lower guide arm supports, wherein the two lower guide arm supports are respectively fixed to the frame and extend downward from the frame, and the left guide arm is hinged to the left guide arm. The lower guide arm, the right guide arm is hinged to the lower guide arm located on the right side, wherein the two side ends of the V-shaped thrust rod are respectively mounted on the frame, the The intermediate end of the V-shaped thrust rod is supported on an axle of the vehicle, wherein the V-shaped thrust rod is hingedly connected to the frame and the vehicle axle, respectively, wherein the vehicle axle is hingedly supported on the The lower guide arm is assembled to form a parallelogram guide mechanism.

According to one aspect of the present invention, the present invention provides an air suspension system, which is applied to a vehicle, wherein a frame of the vehicle includes two side-by-side longitudinal beams, wherein the air suspension system includes:

at least one air spring;

at least one shock absorber; and

A guide mechanism, wherein the guide mechanism includes a V-shaped thrust rod, at least two V-shaped thrust rod supports, two lower guide arm supports and two lower guide arms, wherein the two lower guide arm supports extend respectively To two of the longitudinal beams of the frame, each of the lower guide arm supports is mounted with one of the lower guide arms, wherein each of the lower guide arm supports has a high end and a low end, wherein the the frame is located at the high end of the lower guide arm support, the lower guide arm is located at the lower end of the lower guide arm support, wherein the V-shaped thrust rod has two side ends and a middle End, the side end of the V-shaped thrust rod is hinged to the V-shaped thrust rod support, and the V-shaped thrust rod support is connected to the two longitudinal beams of the frame, wherein the vehicle's An axle is respectively provided with an upper bearing and a lower bearing, wherein the middle end of the V-shaped thrust rod is connected to the upper bearing, and the lower guide arm is connected to the lower bearing, wherein The air spring has a high end and a low end, wherein the high end of the air spring is connected to the frame, and the low end of the air spring is connected to the lower guide arm, wherein the shock absorber There is a high end and a low end, wherein the high end of the shock absorber is connected to the frame, wherein the low end of the shock absorber is connected to the lower guide arm.

According to an embodiment of the present invention, each of the lower guide arms has an air spring installation hole, a lower guide arm support installation hole and an axle installation hole, wherein the air spring installation hole is used for installing the air spring, the lower guide arm support mounting hole is used to install the lower guide arm support, the axle mounting hole is used to install the lower support, wherein the axle mounting hole is located in the air spring installation between the hole and the mounting hole of the lower guide arm support.

According to an embodiment of the present invention, the air spring and the lower guide arm support are located at two ends of the lower guide arm, respectively.

According to an embodiment of the present invention, the lower guide arm has a shock absorber installation hole, wherein the shock absorber installation hole is located between the lower guide arm support installation hole and the axle installation hole, Wherein, the shock absorber hole is closer to the lower guide arm support mounting hole than the axle mounting hole.

According to an embodiment of the present invention, the guide mechanism further comprises at least two torsion bars arranged side by side, wherein the torsion bars are located between the two lower guide arms and are respectively connected to the two lower guide arms, When the lower guide arm has a tendency of reverse movement, the torsion bar is deformed to resist the tendency of reverse movement of the lower guide arm.

According to an embodiment of the present invention, the torsion bar is a spring steel elbow, and the torsion bar is respectively installed on the two lower guide arms through interference connection and flat key positioning.

According to an embodiment of the present invention, the lower guide arm has a torsion bar installation hole, wherein the torsion bar installation hole is located between the air spring installation hole and the lower guide arm support installation hole.

According to an embodiment of the present invention, the upper support extends outward from the vehicle axle and is located at a middle position of the vehicle axle.

According to an embodiment of the present invention, the number of the lower supports is two, and they are respectively formed by extending downward from both ends of the axle.

According to an embodiment of the present invention, the air suspension system further comprises two V-shaped thrust rod supports, wherein the two V-shaped thrust rod supports are respectively disposed on the two longitudinal beams of the vehicle frame, And located inside the frame, the V-shaped thrust rod is supported by the V-shaped thrust rod support, wherein the V-shaped thrust rod support and the lower guide arm support are respectively located at the same part of the frame. inside and outside.

According to an embodiment of the present invention, each of the lower guide arms is hinged to the lower guide arm support and the axle, respectively.

According to an embodiment of the present invention, the V-shaped thrust rod is hinged to the vehicle frame and the vehicle axle respectively.

According to an embodiment of the present invention, the projection of the lower guide arm and the V-shaped thrust rod on the longitudinal plane of the vehicle can form a parallelogram.

According to an embodiment of the present invention, the number of the shock absorbers is two, each of the lower guide arms supports one of the shock absorbers, the number of the air springs is two, and each of the lower guide arms One of the air springs is supported.

According to another aspect of the present utility model, the present utility model provides a vehicle comprising:

a drive system; and

a travel system, wherein the travel system is drivably connected to the drive system, wherein the travel system includes two axles, a frame, four wheels, and an air suspension system, wherein each two The wheel is mounted on one of the axles, wherein the air suspension system is connected to the axle to the frame.

An air suspension system applied to a vehicle, wherein a frame of the vehicle includes two longitudinal beams, including:

at least one air spring;

at least one shock absorber; and

A guide mechanism, wherein the guide mechanism includes a V-shaped thrust rod, at least two V-shaped thrust rod supports, a lower guide arm support and two lower guide arms, wherein the two lower guide arm supports respectively extend on The two longitudinal beams of the frame, each of the lower guide arm supports are mounted to one of the lower guide arms, wherein each of the lower guide arm supports has a high end and a low end, wherein the vehicle The frame is located at the high end of the lower guide arm support, the lower guide arm is located at the lower end of the lower guide arm support, wherein the V-shaped thrust rod has two side ends and a middle end The two side ends of the V-shaped thrust rod are hinged to the V-shaped thrust rod support, and the V-shaped thrust rod support is connected to the two longitudinal beams of the vehicle frame, wherein the vehicle One of the axles is provided with an upper support and a lower support, wherein the middle end of the V-shaped thrust rod is connected to the upper support, and the lower guide arm is connected to the lower support, Wherein the air spring has a high end and a low end, wherein the high end of the air spring is connected to the frame, the low end of the air spring is connected to the lower guide arm, wherein the vibration damping The shock absorber has a high end and a low end, wherein the high end of the shock absorber is connected to the frame, wherein the low end of the shock absorber is connected to the lower guide arm assembly.

According to an embodiment of the present utility model, the lower guide arm assembly includes two lower guide arms, wherein the two lower guide arms are respectively hinged to the axle through the lower support, and the two lower guide arms are respectively hinged to the axle. The arms are respectively hinged to the lower guide arm supports on the same side.

According to an embodiment of the present invention, the lower guide arm assembly further includes two torsion bars, wherein the two torsion bars are respectively connected to the two lower guide arms in a spanning manner.

According to an embodiment of the present invention, the air spring and the lower guide arm support are respectively located at two ends of the lower guide arm on the same side.

According to an embodiment of the present invention, the number of the lower guide arm assemblies is two, the lower guide arm assemblies are respectively located in front of and behind the lower guide arm support, and the number of the air springs is four , and each of the lower guide arms is supported with one of the air springs.

According to another aspect of the present invention, the present invention provides a vehicle, wherein the vehicle includes:

a drive system; and

a travel system, wherein the travel system is drivably connected to the drive system, wherein the travel system includes two axles, a frame, four wheels, and an air suspension system, wherein each two The wheel is mounted on one of the axles, wherein the air suspension system is connected to the axle to the frame, wherein the air suspension system includes:

at least one air spring;

at least one shock absorber; and

A guide mechanism, wherein the guide mechanism includes a V-shaped thrust rod, a V-shaped thrust rod support, two lower guide arm supports and a lower guide arm assembly, wherein each of the lower guide arm supports has a high end and a low end, the high end is connected to the outer side of the vehicle, the low end is connected to the lower guide arm assembly, wherein the V-shaped thrust rod has two side ends and a middle end, the V-shaped The two side ends of the thrust rod are respectively installed on the V-shaped thrust rod support, and the V-shaped thrust rod support is installed on the inner side of the frame, and the position is the same as that of the lower guide arm support, wherein the vehicle An upper support and a lower support are respectively set on an axle of the vehicle, wherein the middle end of the V-shaped thrust rod is connected to the upper support, and the lower guide arm assembly is connected to the lower support seat, wherein the air spring has a high end and a low end, wherein the high end of the air spring is connected to the frame, and the low end of the air spring is connected to the lower guide arm, wherein the The shock absorber has a high end and a low end, wherein the high end of the shock absorber is connected to the frame, and the low end of the shock absorber is connected to the lower guide arm.

Description of drawings

FIG. 1 is a schematic diagram of a single-axle double-airbag air suspension according to the prior art.

FIG. 2 is a schematic diagram of a vehicle according to a preferred embodiment of the present invention.

3 is a schematic diagram of an air suspension system according to a preferred embodiment of the present invention, illustrating that the air suspension system is mounted on a frame and an axle is mounted on the air suspension system .

4 is a schematic diagram of the air suspension system according to the above preferred embodiment of the present invention, illustrating the air suspension system of a single axle.

5 is a partial schematic view of a guide structure of the air suspension system according to the above preferred embodiment of the present invention.

6 is a schematic view of an axle of the vehicle according to the above-described preferred embodiment of the present invention, illustrating the axle provided with an upper bearing and a lower bearing.

Detailed ways

The following description is used to disclose the present invention to enable those skilled in the art to implement the present invention. The preferred embodiments described below are given by way of example only, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention defined in the following description may be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the present invention.

It should be understood by those skilled in the art that in the disclosure of the present invention, the terms "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention. The utility model and simplified description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus the above terms should not be construed as limiting the invention.

It should be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be one. The number may be plural, and the term "one" should not be understood as a limitation on the number.

2 to 6, an air suspension system 1 according to a preferred embodiment of the present invention is illustrated. The air suspension system 1 can be applied to a vehicle 1000 . The vehicle 1000 includes a vehicle body 100 and a driving system 200 , wherein the driving system 200 includes at least one axle 201 , at least one wheel 202 , a frame 203 and the air suspension system 1 .

The vehicle body 100 may include a driving system 101, a braking system, a steering system, a control system, etc., wherein the driving system 200 is drivably connected to the driving system 101, the braking system, The steering system and the control system are respectively mounted on the frame 203 of the traveling system 200 . The braking system is used for braking the wheels 202 , the steering system is used for steering the wheels 202 , the driving system 200 , the driving system 101 , the braking system and the steering system are are respectively controllably connected to the control system. The control system can be implemented as a steering wheel or as a remote control. The vehicle 1 may be an unmanned vehicle. Optionally, the vehicle 1 is a heavy-duty towing vehicle.

The air suspension system 1 is attached to the vehicle body frame 203 , and the axle 201 is attached to the air suspension system 1 . The wheel 203 is attached to the axle 201 .

During the running process of the vehicle 1000, the air suspension system 1 can transmit the force and moment acting between the wheel 203 and the frame 203, and buffer the force transmitted from the uneven road to the frame 203 or the vehicle body. Impact force, attenuate the vibration caused by it, so as to ensure that the car can run smoothly.

The air suspension system 1 includes a guide mechanism 10, a vibration damping mechanism 20 and at least one air spring 30, wherein the air spring 30 can bear and transmit vertical loads, relieve uneven road surfaces, emergency braking, acceleration and turning caused by impact or changes in body position. The air spring 30 can maintain the elastic connection between the frame 203 and the axle 201 . The damping mechanism 20 is used to damp vibrations caused by the elastic system. The guide mechanism 10 can make the wheel 203 move relative to the body of the vehicle 1000 according to a certain movement track, and simultaneously transmit various forces and moments other than the vertical force.

The axle 201 is mounted on the guide mechanism 10 of the air suspension system 1 , and both ends of the damping mechanism 20 are mounted on the guide mechanism 10 and the frame 203 , respectively. Both ends of the spring 30 are respectively attached to the guide mechanism 10 and the frame 203 . The damping mechanism 20 and the air spring 30 are located between the frame 203 and the guide mechanism 10 , and the frame 203 is connected to the guide mechanism 10 .

Specifically, the guide mechanism 10 includes at least one V-shaped thrust rod 11 , two V-shaped thrust rod supports 50 , two lower guide arm supports 12 and a lower guide arm assembly 13 , wherein the V-shaped thrust rod 11 Located above the lower guide arm support 12 and the lower guide arm assembly 13, the V-shaped thrust rod 11 is connected to the vehicle frame 203 through the V-shaped thrust rod support 50, and the lower guide arm is assembled together. The frame 13 is connected to the frame 203 through the lower guide arm support 12 .

The V-shaped thrust rod 11 has three end portions, two side end portions 111 and a middle end portion 112, wherein the V-shaped thrust rod 11 includes a first partial thrust rod 113 and a second partial thrust rod 114, An included angle is formed between the first partial thrust rod 113 and the second partial thrust rod 114 , so that the first partial thrust rod 113 and the second partial thrust rod 114 present a V-shape.

The side end 111 of the V-shaped thrust rod 11 is connected to the V-shaped thrust rod support 50 , and the V-shaped thrust rod support 50 is fixed to the inner side of the vehicle frame 203 , and then the V-shaped thrust rod support 50 is The side end portion 111 of the thrust rod 11 is connected to the vehicle frame 203 through the V-shaped thrust rod support 50 . The middle end 112 of the V-shaped thrust rod 11 is connected to the axle 201 .

The lower guide arm supports 12 are respectively formed by extending downward from the vehicle frame 203 . The lower guide arm assembly 13 includes two lower guide arms 131 , one end of each of the lower guide arm supports 12 is fixed to the frame 203 , and the other end of the lower guide arm supports 12 is connected to the frame 203 . The lower guide arm 131 is described.

The frame 203 includes two longitudinal beams, wherein the two longitudinal beams are respectively located on the left and right sides, wherein the longitudinal beams are located in the longitudinal direction of the vehicle 1000 . A said longitudinal beam is provided with a said lower guide arm support 12 and said V-shaped thrust rod support 50 .

The lower guide arm 131 is connected to the frame 203 through the lower guide arm support 12 . Specifically, the lower guide arm 131 on the left is connected to the lower guide arm support 12 on the same side, and the lower guide arm 131 on the right is connected to the lower guide arm on the same side Support 12.

For the axle 201, the V-shaped thrust rod 11 is connected to the axle 201 and is located above the axle 201, while the lower guide arm 131 of the lower guide arm assembly 13 Connected to the underside of the axle 201 .

The shock absorber 20 includes at least two shock absorbers 21 , wherein the shock absorbers 21 are supported on the lower guide arm 131 , and one end of the shock absorber 21 is connected to the lower guide arm 131 . The other end of the shock absorber 21 is connected to the frame 203 . Specifically, the shock absorber 21 has a high end and a low end, wherein the position of the high end of the shock absorber 21 is higher than the position of the low end of the shock absorber 21 . The high end of the shock absorber 21 is connected to the frame 203 , and the low end of the shock absorber 21 is connected to the lower guide arm of the lower guide arm assembly 13 .

For the lower guide arm 131 of the lower guide arm assembly 13 , the lower guide arm 131 is connected between the lower guide arm support 12 and the axle 201 to play a guiding role, and at the same time the lower guide arm The other end of 131 is connected with the lower end of the air spring 30, which plays a bearing role. The lower guide arm 131 has both connection, guide and bearing functions, the function integration of the entire lower guide arm assembly 13 is high, and the structure of the air suspension system 11 is relatively simplified

Further, the lower guide arm assembly 13 includes at least two torsion bars 132 , wherein the torsion bars 132 are located between the two lower guide arms 131 .

When the vehicle 1000 rolls, the two ends of the axle 201 bounce in the opposite direction, driving the guide arms 131 on the left and right sides to move in the opposite direction, and the torsion bar 132 of the lower guide arm 131 will generate Torsional deformation, so as to resist the tendency of torsional movement of the axle 201, the lower guide arm assembly 13 can function as a lateral stabilizer.

Specifically, each lower guide arm 131 of the lower guide arm assembly 13 has at least one torsion bar mounting hole 1311 , an axle mounting hole 1312 and a lower guide arm support mounting hole 1313 , wherein the torsion bar The rod mounting hole 1311 is used to install the torsion bar 132, the axle mounting hole 1312 is used to connect the axle 201, and the lower guide arm support mounting hole 1313 is used to connect the lower guide arm support 12.

The axle mounting holes 1312 , the torsion bar mounting holes 1311 and the lower guide arm support mounting holes 1313 are sequentially arranged on the lower guide arm 131 . The torsion bar mounting hole 1311 is located between the axle mounting hole 1312 and the lower guide arm support mounting hole 1313 .

The number of the torsion bar mounting holes 1311 corresponds to the number of the torsion bar 132 . Optionally, the torsion bar 132 is implemented as a spring steel elbow, and the spring steel elbow is positioned and installed on the two lower guide arms 131 and located on the two lower guide arms 131 through an interference connection and a flat key. between.

When the two ends of the axle 201 installed on the lower guide arm assembly 13 through the axle mounting holes 1312 are twisted, the two lower guide arms 131 connected to the axle 201 are respectively connected There is a tendency to twist, and at this time, the torsion bar 132 connected between the two lower guide arms 131 can be twisted and deformed to resist the torsional movement tendency of the axle 201, so that the entire guide arm is always can act as a lateral stabilizer.

Further, the air suspension system 1 includes a plurality of bushings 40, wherein one of the bushings 40 is installed in the lower guide arm support mounting hole 1313, and the lower guide arm support 12 has a high end and A low end, wherein the high end of the lower guide arm support 12 is connected to the frame 203 , and the low end of the lower guide arm support 12 is connected to the lower guide arm 131 . The lower guide arm 131 and the lower guide arm support 12 are connected in a manner that the bush 40 is installed in the lower guide arm support mounting hole 1313 .

Optionally, the bushing 40 to which the lower guide arm support mounting hole 1313 is mounted may be implemented as a rubber bushing 40 .

It is worth mentioning that the bushing 40 located in the lower guide arm support mounting hole 1313 and the lower guide arm support 12 located in the frame 203 are connected in a hinged manner, so that the lower guide arm The lower guide arm 131 of the assembly 13 is hinged to the lower end of the lower guide arm support 12 . The other bush 40 is mounted on the axle mounting hole 1312 , and the axle 201 and the lower guide arm 131 of the lower guide arm assembly 13 are mounted on the axle through the bush 40 . Axle mounting holes 1312 are connected. Optionally, the bushing 40 mounted to the axle mounting hole 1312 may be implemented as a rubber bushing 40 .

It is worth mentioning that the bushing 40 located in the axle mounting hole 1312 is hinged to the axle 201 .

Specifically, the axle 201 is provided with an upper support 2011 and a lower support 2012, wherein the upper support 2011 is provided on the axle 201, and preferably, the upper support 2011 is located on the vehicle The middle position of bridge 201. The V-shaped thrust rod 11 is connected to the upper support 2011 .

The lower support 2012 is located on the axle 201 , and the axle 201 is connected to the lower guide arm 131 of the lower guide arm assembly 13 through the lower support 2012 . Preferably, the number of the lower supports 2012 is two, and the two lower supports 2012 are respectively located on both sides of the upper support 2011 and inside the two hubs of the axle 201 .

The lower guide arm 131 is hingedly connected to the axle 201 through the bush 40 installed in the axle mounting hole 1312 of the lower guide arm 131 .

Further, the middle end of the V-shaped thrust rod 11 is hinged to the upper support 2011 provided on the axle 201 .

The air suspension system 1 further includes at least two V-shaped thrust rod supports 50 , wherein the V-shaped thrust rod supports 50 are located on the vehicle frame 203 and located on the inner side of the longitudinal beam of the vehicle frame 203 . Each of the longitudinal beams is provided with one of the V-shaped thrust rod supports 50 .

The side end portion 111 of the V-shaped thrust rod 11 is connected to the V-shaped thrust rod holder 50 so that the V-shaped thrust rod 11 is supported by the V-shaped thrust rod holder 50 through the V-shaped thrust rod holder 50 . the longitudinal beam of the frame 203 .

For the V-shaped thrust rod 11 , it has three fulcrums, two on the two longitudinal beams of the frame 203 and one on the axle 201 . Since the V-shaped thrust rod 11 can bear the lateral load, the horizontal movement of the axle 201 is restricted, and at the same time, the movement is coordinated with the lower guide arm 131 without movement interference, so that each of the bushings 40 and the Neither frame 203 is subjected to additional deformation loads due to motion interference.

Optionally, the V-shaped thrust rod support 50 and the lower guide arm support 12 are respectively connected to the inner side and the outer side of the same part of the vehicle frame 203 . In other words, the V-shaped thrust rod support 50 is located inside the vehicle frame 203 , and the lower guide arm support 12 is located outside the vehicle frame 203 . The lower guide arm support 12 has a high end and a low end, wherein the position of the high end of the lower guide arm support 12 is higher than the position of the low end of the lower guide arm support 12 . The upper end of the lower guide arm support 12 corresponds to the position of the V-shaped thrust rod support 50 .

For the entire air suspension system 1 , the V-shaped thrust rod 11 is located above the lower guide arm 131 . The V-shaped thrust rod 11 is hinged to the vehicle frame 203 and the axle 201 respectively, and the lower guide arm 131 is hinged to the lower guide arm support 12 and the lower guide arm support 12 provided on the vehicle frame 203 respectively. The axle 201 is described.

The axle 201 is equivalently connected to the vehicle frame 203 via the V-shaped thrust rod 11 located above and the lower guide arm 131 of the lower guide arm assembly 13 located below. On the longitudinal plane of the vehicle 1000 , the V-shaped thrust rod 11 and the lower guide arm 131 of the lower guide arm assembly 13 form a parallelogram guide mechanism. Alternatively, on the lateral projection of the vehicle 1000 , the V-shaped thrust rod 11 and the lower guide arm assembly 13 constitute a parallelogram guide mechanism.

When the air suspension system 1 jumps up and down due to an external force, the inclination angle of the axle 201 does not change.

It is worth mentioning that since the lower guide arm 131 and the axle 201 are hinged, the lower guide arm 131 does not need to provide deflection, so the lower guide arm 131 can be designed with an infinite life. The user does not need to replace the lower guide arm 131 regularly, so as to facilitate the use of the entire air suspension system 1 .

Further, in this embodiment, each of the axles 201 corresponds to two of the air springs 30 , and the air springs 30 are located at the lower guide of the frame 203 and the lower guide arm assembly 13 . between the arms 131 . Optionally, the air spring 30 is located at one end of the lower guide arm 131 . One end of the lower guide arm 131 may be provided with an air spring support 60 . The air spring 30 is mounted on the air spring holder 60 .

That is to say, the air spring 30 has a high end and a low end, wherein the high end of the air spring 30 is located higher than the low end of the air spring 30 , and the air spring 30 has a higher end. The high end is connected to the frame 203 , and the low end of the air spring 30 is connected to the lower guide arm of the lower guide arm assembly 13 through the air spring support 60 . The air spring 30 may be a bag-type air spring or a membrane-type air spring. Of course, those skilled in the art can understand that the type of the air spring 30 is not limited to the above examples.

The lower guide arm 131 has an air spring support mounting hole 1314, wherein the air spring support mounting hole 1314 and the lower guide arm support mounting hole 1313 are located at two ends respectively. The air spring support mounting hole 1314 is used to install the air spring support 60 . The air spring support 60 may be fixedly installed on the guide arm 131 by means of bolt connection or the like.

One of the vehicle axles 201 corresponds to two of the air springs 30 , wherein the two air springs 30 are respectively installed on the two lower guide arms 131 .

Further, the connection and guiding method of the axle 201 and the frame 203 is essentially the same as the parallelogram guiding mechanism 10 of the current leaf spring balance suspension, so the air suspension system 1 provided by the present invention The V-shaped thrust rod 11, the V-shaped thrust rod support 50, the lower guide arm 131 connected to the axle 201, the lower guide arm support 12, etc. can be combined with a leaf spring balance suspension. To achieve cross-platform universality, it is not necessary to redesign the mold for the interface positions of the air suspension system 1, the frame 203, and the axle 201 provided by the present invention, so as to facilitate the air suspension system 1 practicability.

Furthermore, the air suspension system 1 can be applied not only to one of the axles 201 of the vehicle 1000 , but also to the two axles 201 of the vehicle 1000 .

One of the axles 201 is located in the front, the other axle 201 is located in the rear, the air suspension system 1 provides two of the V-shaped thrust rods 11, two of the lower guide arm assemblies 13 and two The lower guide arm support 12 .

The two V-shaped thrust rods 11 are oppositely disposed on the frame 203 through openings. Specifically, the air suspension system 1 includes two of the V-shaped thrust rod supports 50 , wherein the two V-shaped thrust rod supports 50 are respectively located on the two longitudinal beams of the vehicle frame 203 . . The V-shaped thrust rods 11 are respectively located on the front and rear sides of the V-shaped thrust rod support 50 .

The two side ends 111 of one of the V-shaped thrust rods 11 at the front are respectively connected to the front sides of the two V-shaped thrust rod supports 50 . The two side ends 111 of the other V-shaped thrust rod 11 at the rear are connected to the rear sides of the two V-shaped thrust rod supports 50 .

The two V-shaped thrust rods 11 are respectively hinged to the V-shaped thrust rod support 50 . One of the V-shaped thrust rods 11 at the front is hinged to the axle 201 located at the front, and one of the V-shaped thrust rods 11 at the rear is hinged to the vehicle axle 201 located at the rear.

The number of the lower guide arm assemblies 13 is two, and the number of the lower guide arms 131 is four. On the longitudinal beam on one side of the frame 203, one lower guide arm 131 extends forward from the lower guide arm support 12, and the other lower guide arm 131 extends from the lower guide arm support 12 extends backwards. The two lower guide arms 131 are hinged to the lower guide arm supports 12 respectively.

For the lower guide arm 131 , one of the air springs 30 is supported on one end of the corresponding one of the lower guide arms 131 away from the lower guide arm support 12 .

The front axle 201 is mounted on the left and right lower guide arms 131 of the front lower guide arm assembly 13, and the front axle 201 is located on the lower guide arm support 12 and the air spring 30 located in the front.

The rear axle 201 is mounted on the left and right lower guide arms 131 of the rear lower guide arm assembly 13, and the rear axle 201 is located on the lower guide arm support 12 and the air spring 30 located at the rear.

That is to say, the four air springs are respectively located outside the axle 201 and located on the lower guide arm 131 of the lower guide arm assembly 13 . The upper end of the air spring 30 is connected to the frame 203 , and the lower end of the air spring 30 is connected to the lower guide arm 131 . The air spring 30 can play the role of bearing and buffering energy storage.

The number of the shock absorbers 21 of the shock absorbing mechanism 20 is four, and each shock absorber 21 is located between the frame 203 and the lower guide arm 131 of the lower guide arm assembly 13 and are respectively installed on the frame 203 and the lower guide arm 131 . The shock absorber 21 can play a role of damping vibration and limiting position.

Each of the lower guide arms 131 is provided with one of the shock absorber supports 70 , wherein the shock absorber supports 70 are located inside the lower guide arms 131 , and each of the shock absorbers 21 is mounted on The shock absorber support 70 .

The air suspension system 1 provided by the present invention realizes the application of the V-shaped thrust rod 11 and the parallelogram structure in the non-independent air suspension of the single-axle double-airbag, and ensures that the axle 201 is within the jumping range. The inclination angle remains unchanged, and the motion interference problem existing in the existing two-airbag air suspension structure is avoided.

The air suspension system 1 provided by the present invention provides the lower guide arm assembly 13 integrating the functions of guiding, supporting and anti-rolling, which simplifies the structure of the entire air suspension system 1 and realizes the Integration and lightweighting of parts.

The air suspension system 1 provided by the present utility model realizes the sharing of some parts with the leaf spring balance suspension through the ingenious design of the parallelogram structure and the arrangement of related parts, so that the parts can be used across platforms, thereby reducing the manufacturing cost. the cost of the trial.

It should be understood by those skilled in the art that the embodiments of the present invention shown in the above description and the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been completely and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may be modified or modified in any way without departing from the principles.

Claims (21)

1. An air suspension system for a vehicle having a frame including two side-by-side rails, comprising:

at least one air spring;

at least one vibration damper; and

a guide mechanism, wherein said guide mechanism comprises a V-shaped thrust bar, at least two V-shaped thrust bar supports, two lower guide arm supports and two lower guide arms, wherein two of said lower guide arm supports extend respectively across two of said stringers of the vehicle frame, each of said lower guide arm supports having connected thereto one of said lower guide arms, wherein each of said lower guide arm supports has a high end and a low end, wherein the vehicle frame is located at said high end of said lower guide arm support, and said lower guide arm is located at said low end of said lower guide arm support, wherein said V-shaped thrust bar has two lateral ends and a middle end, said two lateral ends of said V-shaped thrust bar being respectively mounted to two V-shaped thrust bar supports fixed inside the vehicle frame, wherein a vehicle axle of the vehicle is respectively provided with an upper support and a lower support, wherein said middle end of said V-shaped thrust bar is connected to said upper support, said lower guide arm being attached to said lower bracket, wherein said air spring has a high end and a low end, wherein said high end of said air spring is attached to the frame and said low end of said air spring is attached to said lower guide arm, wherein said shock absorber has a high end and a low end, wherein said high end of said shock absorber is attached to the frame, wherein said low end of said shock absorber is attached to said lower guide arm.

2. The air suspension system of claim 1, wherein each of said lower guide arms has an air spring mounting hole for mounting said air spring, a lower guide arm bracket mounting hole for attaching said lower guide arm bracket, and an axle mounting hole for mounting said lower bracket, wherein said axle mounting hole is located between said air spring mounting hole and said lower guide arm bracket mounting hole.

3. The air suspension system of claim 2, wherein said air spring and said lower pilot arm support are located at both ends of said lower pilot arm, respectively.

4. The air suspension system of claim 2, wherein said lower pilot arm has a damper mounting hole, wherein said damper mounting hole is located between said lower pilot arm bracket mounting hole and said axle mounting hole, wherein said damper hole is closer to said lower pilot arm bracket mounting hole than to said axle mounting hole.

5. The air suspension system of claim 2, wherein said steering mechanism further comprises at least two torsion bars arranged side-by-side, wherein said torsion bars are located between and connected to said lower steering arms, respectively, and deform to resist the tendency of said lower steering arms to move in opposite directions when said lower steering arms have a tendency to move in opposite directions.

6. The air suspension system of claim 5, wherein said torsion bar is a spring steel elbow and is mounted to each of said lower guide arms by interference fit and flat key location.

7. The air suspension system of claim 5, wherein said lower pilot arm has a torsion bar mounting hole, wherein said torsion bar mounting hole is located between said air spring mounting hole and said lower pilot arm bracket mounting hole.

8. An air suspension system according to any one of claims 1 to 7 wherein said upper bracket extends outwardly from and is located at an intermediate position of said axle.

9. An air suspension system according to any one of claims 1 to 7 wherein said lower seats are two in number and extend downwardly from each end of said axle.

10. The air suspension system of any one of claims 1 to 7, further comprising two V-shaped thrust bar supports, wherein two of said V-shaped thrust bar supports are attached to two of said side rails of said vehicle frame, respectively, and located inside said vehicle frame, and said V-shaped thrust bar is attached to said V-shaped thrust bar support attachment support, wherein said V-shaped thrust bar supports and said lower pilot arm supports are located inside and outside the same portion of said vehicle frame, respectively.

11. An air suspension system according to any one of claims 1 to 7 wherein each said lower pilot arm is hinged to said lower pilot arm mount and the axle respectively.

12. The air suspension system of claim 11 wherein said V-shaped thrust rods are hinged to the frame and the axle, respectively.

13. The air suspension system of claim 12 wherein the projection of said lower guide arm and said V-shaped thrust rod onto the longitudinal plane of the vehicle can form a parallelogram.

14. The air suspension system of claim 11 wherein said number of shock absorbers is two, each of said lower pilot arms supporting one of said shock absorbers, said number of air springs is two, each of said lower pilot arms supporting one of said air springs.

15. A vehicle, characterized by comprising:

a drive system; and

a ride system, wherein said ride system is drivably coupled to said drive system, wherein said ride system comprises two axles, a frame, an air suspension system according to any one of claims 1 to 14, and four wheels, wherein each two of said wheels are mounted to one of said axles, wherein said air suspension system is coupled to said axle to said frame.

16. An air suspension system for a vehicle, wherein a frame of the vehicle includes two longitudinal beams, comprising:

at least one air spring;

at least one vibration damper; and

a guiding mechanism, wherein said guiding mechanism comprises a V-shaped thrust bar, at least two V-shaped thrust bar supports, a lower guiding arm assembly and two lower guiding arm supports, wherein said lower guiding arm supports have a high end and a low end, wherein said high end of said lower guiding arm support is higher than said low end of said lower guiding arm support, wherein said high end of said lower guiding arm support is connected to the connecting beam, said lower guiding arm assemblies are hinged to said low ends of two said lower guiding arm supports, respectively, wherein said V-shaped thrust bar has two lateral ends and a middle end, said lateral ends of said V-shaped thrust bar are hinged to said V-shaped thrust bar supports, said V-shaped thrust bar supports are connected to two said longitudinal beams of the vehicle frame, wherein a vehicle axle of the vehicle is provided with an upper support and at least one lower support, respectively, wherein said middle end of said V-shaped thrust bar is hinged to said upper support, said lower bracket is hingedly connected to said lower guide arm assembly, wherein said air spring has a high end and a low end, wherein said high end of said air spring is attached to said frame and said low end of said air spring is attached to said lower guide arm assembly, wherein said shock absorber has a high end and a low end, wherein said high end of said shock absorber is attached to said frame and wherein said low end of said shock absorber is attached to said lower guide arm assembly.

17. The air suspension system of claim 16, wherein said lower pilot arm assembly includes two lower pilot arms, wherein two of said lower pilot arms are respectively hinged to said axle through said lower mounts, and wherein two of said lower pilot arms are respectively hinged to said lower pilot arm mounts on the same side.

18. The air suspension system of claim 17 wherein said lower guide arm assembly further comprises two torsion bars, wherein two of said torsion bars are connected transversely to each of said lower guide arms.

19. The air suspension system according to claim 17 or 18, wherein said air spring and said lower pilot arm support are respectively located at both ends of said lower pilot arm on the same side.

20. An air suspension system according to any one of claims 16 to 17 wherein said lower pilot arm assemblies are two in number, said lower pilot arm assemblies are respectively located forwardly and rearwardly of said lower pilot arm support, said air springs are four in number, and one said air spring is supported for each said lower pilot arm.

21. A vehicle, characterized by comprising:

a drive system; and

a ride system wherein said ride system is drivably coupled to said drive system, wherein said ride system comprises two axles, a frame, an air suspension system according to any one of claims 16 to 20, and four wheels, wherein each two of said wheels are mounted to one of said axles, wherein said air suspension system is coupled to said axle to said frame.

Images