CN216683975U

CN216683975U - Front air suspension system of vehicle

Info

Publication number: CN216683975U
Application number: CN202220253562.7U
Authority: CN
Inventors: 李显龙; 韩建伟; 于江; 杨冰; 张国超
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-06-07
Anticipated expiration: 2032-02-08

Abstract

In order to solve the problems of large frequency deviation, large vibration and the like of a vehicle leaf spring suspension, the utility model provides a vehicle front air suspension system which comprises a guide arm, a front air spring, a transverse thrust rod, a transverse stabilizer rod and a vibration absorber, wherein the guide arm is positioned below a vehicle frame, the front end of the guide arm is hinged with the vehicle frame, the rear end of the guide arm is fixedly connected with an axle, the lower end of the front air spring is fixedly connected with the rear part of the guide arm and positioned right above the axle, the upper end of the front air spring is fixedly connected with the vehicle frame, the transverse thrust rod is distributed along the width direction of the vehicle frame, one end of the transverse thrust rod is fixedly connected with the guide arm, the other end of the transverse thrust rod is fixedly connected with the vehicle frame, the transverse stabilizer rod is in a U-shaped structure, the transverse rod part of the transverse stabilizer rod is distributed along the width direction of the vehicle frame and rotatably connected with the front end of the axle, the front end part of the transverse stabilizer rod is hinged with the vehicle frame through a balance clamp, the vibration absorber is connected between the guide arm and the vehicle frame, the front air spring is directly connected with the guide arm, so that the height of the suspension is reduced, and the driving stability is improved.

Description

Front air suspension system of vehicle

Technical Field

The utility model relates to the technical field of heavy-duty automobile suspensions, in particular to a front air suspension system of a vehicle.

Background

At present, light trucks which are not matched with a front air suspension are not arranged on the market, most of the light trucks are matched with a leaf spring suspension, the leaf spring suspension has large offset frequency, and after the light trucks are impacted by a road surface, the goods vibrate greatly. In recent years, the domestic light truck industry is rapidly developed, more diversified and customized requirements are derived, including the requirements on the comfort and the smoothness of the light truck, the requirements on transporting goods with high added values such as precise instruments and fragile products, the height of a suspension can be adjusted, and the requirements on the heights of different unloading platforms are met. Meanwhile, the weight of the air suspension is greatly reduced compared with that of a plate spring suspension, and the light weight advantage of the air suspension is obvious on the premise of weighing and charging at present.

Disclosure of Invention

In order to solve the problems, the utility model provides a vehicle front air suspension system, which adopts the following technical scheme:

the front air suspension system of the vehicle is characterized by comprising a guide arm, a front air spring, a transverse thrust rod, a transverse stabilizer rod and a shock absorber, wherein the guide arm is positioned below the vehicle frame, the front end of the guide arm is hinged with the vehicle frame, the rear end of the guide arm is fixedly connected with the vehicle axle, the lower end of the front air spring is fixedly connected with the rear part of the guide arm and positioned right above the vehicle axle, the upper end of the front air spring is fixedly connected with the vehicle frame, the transverse thrust rod is distributed along the width direction of the vehicle frame, one end of the transverse thrust rod is fixedly connected with the guide arm, the other end of the transverse thrust rod is fixedly connected with the vehicle frame, the transverse stabilizer rod is of a U-shaped structure, the transverse rod part of the transverse stabilizer rod is distributed along the width direction of the vehicle frame and is rotatably connected with the front end of the vehicle axle, the front end part of the longitudinal rod part of the transverse stabilizer rod is hinged with the vehicle frame through a balance clamp, and the shock absorber is connected between the guide arm and the vehicle frame.

Preferably, the guide arm is of a non-uniform width structure, and the guide arm gradually widens from front to back.

Preferably, the upper surface of the rear part of the guide arm is horizontal, and the lower surface is provided with a downward inclination angle which inclines from front to back.

Preferably, the upper end of the front air spring is fixedly connected to the lower wing surface of the frame through an air bag bracket, and the lower end of the front air spring is fixedly connected with the guide arm through a bolt.

Preferably, the shock absorber is a bidirectional cylinder shock absorber with a hydraulic self-limiting function, the shock absorbers are distributed in the vertical direction, and the upper end and the lower end of the shock absorber are respectively fixedly connected with the frame and the guide arm through an upper shock absorber support and a lower shock absorber support.

The utility model has the beneficial effects that:

1. the front air spring is not connected with the guide arm through a pressure plate and the axle any more, and structures such as a tray, a cushion block and the like are omitted, so that the height of the suspension is greatly reduced, and meanwhile, the air spring is directly arranged right above the axle, so that the offset frequency is greatly reduced;

2. the upper surface of the guide arm is horizontal, and the lower surface of the guide arm is provided with an inclination angle, so that the horizontal of an airbag mounting surface is ensured, the airbag skin and the limiting block are vertical to the frame, the stress condition of the airbag is greatly improved, meanwhile, the inclination angle of the lower surface ensures the caster angle of the kingpin, and the steering performance is improved;

3. the guide arm with unequal width is used and gradually widened from front to back, so that the guide arm and the axle are favorably fixed, and the longitudinal force transmission condition of the guide arm is improved;

4. the front air spring is fixed with the frame through the fixing bracket, and the upper end and the lower end of the shock absorber are respectively connected with the axle through the bracket, so that the number of parts of the whole vehicle is reduced, and the system integration level is increased;

5. the left end of the transverse thrust rod is connected with the guide arm, the right end of the transverse thrust rod is connected with the frame, and the transverse thrust rod is long in span and beneficial to improving the running stability.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

FIG. 2 is a schematic view of the left side view of the guide arm and lateral thrust rod

FIG. 3 is a schematic top view of the guide arm

FIG. 4 is a schematic view of a stabilizer bar structure

The device comprises a guide arm front support 1, a guide arm 2, a stabilizer bar upper support 3, a balance clamp 4, a stabilizer bar 5, a stabilizer bar bushing 6, a stabilizer bar lower support 7, an axle fixing bolt 8, an axle 9, an air bag support 10, a front air spring 11, a vibration absorber lower support 12, a vibration absorber 13, a vibration absorber upper support 14, a transverse thrust rod right connecting support 15, a transverse thrust rod 16, a transverse thrust rod left connecting support 17, a transverse thrust rod left support mounting hole 18, an axle fixing bolt hole 19, a vibration absorber lower support mounting hole 20 and a front air spring mounting hole 21.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The vehicle front air suspension system shown in fig. 1-4 mainly includes a front air spring 11, a guide arm 2, a stabilizer bar 5, a lateral thrust bar 16, and a shock absorber 13.

Wherein, the guide arms 2 are provided with two groups, the guide arms 2 are distributed along the front and back direction of the vehicle frame and are arranged at the lower position of the vehicle frame, the guide arms 2 adopt a non-equal width structure and gradually widen from front to back, the front end of the guide arm 2 is hinged with the vehicle frame through a guide arm front bracket 1, the upper surface of the rear part of the guide arm 2 is horizontal, the lower surface is provided with a 3-degree inclination angle which is obliquely distributed downwards from front to back, the lower end surface of the rear part of the guide arm 2 is jointed with the upper end surface of the vehicle axle 9, as shown in figure 2-3, the rear part of the guide arm 2 is sequentially provided with a transverse thrust rod left bracket mounting hole 18, a vehicle axle fixing bolt hole 19 and a shock absorber mounting hole 20 from front to back, the rear part of the guide arm 2 is fixed right above the vehicle axle 9 through the vehicle axle fixing bolt hole 18, the rear part of the guide arm 2 is also provided with a front air spring mounting hole 21, the lower end of the front air spring 11 is fixedly connected with the rear part of the guide arm 2 through a bolt and the front air spring mounting hole 21, the upper end of the front air spring 11 is fixedly connected with the frame through an air bag bracket 10.

Stabilizer bar 5 wholly is U type structure, and stabilizer bar 5's horizontal pole part rotates through stabilizer bar bush 6 to be connected in axle 9 front end and lie in guide arm 2 below, and stabilizer bar 5's two vertical pole partial front end top all is connected with balance clamp 4, and 4 upper ends of balance clamp are articulated to have stabilizer bar upper bracket 3, stabilizer bar upper bracket 3 and frame fixed connection, balance clamp 4 lower extreme then link to each other with 5 vertical pole partial front ends of stabilizer bar are articulated.

The transverse thrust rods 16 are distributed along the left and right of the frame in the width direction, the right ends of the transverse thrust rods are fixedly connected below the frame through a transverse thrust rod right connecting support 15, and the left ends of the transverse thrust rods are fixedly connected with the left guide arm 2 through a transverse thrust rod left connecting support 17.

The shock absorber 13 adopts a bidirectional cylinder type shock absorber with a hydraulic limiting function, the upper end of the shock absorber 13 is fixedly connected with the frame through a shock absorber upper support 14, and the lower end of the shock absorber 13 is fixedly connected with a shock absorber lower support mounting hole 20 on the guide arm 2 through a shock absorber lower support 12.

The front air spring 11 is connected with the guide arm 2 through bolts, original parts such as trays and cushion blocks are omitted, the overall height of the suspension is effectively reduced, the guide arm 2 is fixedly connected with the axle 9 through four axle mounting bolts 8, the number of the parts is simplified, the upper end face of the rear part of the guide arm 2 is horizontal, the horizontal of the mounting surface of the front air spring 11 is ensured, the lower surface is provided with a 3-degree inclination angle, the rear inclination angle of a main pin is ensured, and the steering performance is improved; in addition, the guide arm 2 adopts a non-equal-width steering arm, and the width of the steering arm is gradually increased from front to back, so that the guide arm 2 and the axle 9 are favorably fixed, and the longitudinal force transmission condition of the guide arm 2 is improved; the left end of the transverse thrust rod 16 is connected with the guide arm, the right end of the transverse thrust rod is connected with the frame, and the transverse thrust rod is long in span and beneficial to improving the running stability.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit of the utility model, and these modifications should be construed as within the scope of the utility model.

Claims

1. The front air suspension system of the vehicle is characterized by comprising a guide arm, a front air spring, a transverse thrust rod, a transverse stabilizer rod and a shock absorber, wherein the guide arm is positioned below a vehicle frame, the front end of the guide arm is hinged to the vehicle frame, the rear end of the guide arm is fixedly connected with an axle, the lower end of the front air spring is fixedly connected with the rear portion of the guide arm and positioned right above the axle, the upper end of the front air spring is fixedly connected with the vehicle frame, the transverse thrust rod is distributed along the width direction of the vehicle frame, one end of the transverse thrust rod is fixedly connected with the guide arm, the other end of the transverse thrust rod is fixedly connected with the vehicle frame, the transverse stabilizer rod is of a U-shaped structure, a transverse rod portion of the transverse stabilizer rod is distributed along the width direction of the vehicle frame and is rotatably connected to the front end of the axle, a front end portion of a longitudinal rod portion of the transverse stabilizer rod is hinged to the vehicle frame through a balance clamp, and the shock absorber is connected between the guide arm and the vehicle frame.

2. The vehicle front air suspension system of claim 1, wherein the pilot arm is a non-uniform width structure, the pilot arm gradually widening from front to back.

3. The vehicle front air suspension system according to claim 1, wherein an upper surface of a rear portion of the pilot arm is horizontal, and a lower surface is provided with a downward inclination that inclines from front to rear.

4. The vehicle front air suspension system of claim 1, wherein the front air spring is fixedly connected at an upper end thereof to the lower frame airfoil by an air bag bracket and at a lower end thereof to the pilot arm by a bolt.

5. The vehicle front air suspension system according to claim 1, wherein the shock absorber is a bidirectional tube type shock absorber with a hydraulic self-limiting function, the shock absorbers are distributed in the vertical direction, and the upper end and the lower end of the shock absorber are fixedly connected with the vehicle frame and the guide arm respectively through an upper shock absorber support and a lower shock absorber support.