Front air suspension of composite structure passenger car

Abstract

The utility model discloses a composite structure passenger car front air suspension which comprises two air bag supporting bases installed on an axle, air springs are installed on the tops of the air bag supporting bases, a shock absorber is installed on one side of each air bag supporting base, and a leaf rod spring is installed on the side, away from the shock absorber, of each air bag supporting base. Front supports are arranged at the ends of the sides, close to each other, of the two piece rod springs, the same upper longitudinal thrust rod is installed between the front supports and the corresponding air bag brackets, and the same transverse thrust rod is installed between the two air bag brackets. According to the sheet rod spring structure, the functions of a lower longitudinal thrust rod and a stabilizer bar are combined, the integration is higher, meanwhile, a stabilizer bar suspender and a suspender installation cross beam are omitted, the integration of suspension components is achieved, installation points are reduced, and the available space of the whole vehicle is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspensions, and specifically relates to a front air suspension for a composite structure bus. Background Technique

[0002] At present, it has become the mainstream in the bus market to apply air suspensions to improve comfort. In highway tourism vehicle models, the front air suspension usually adopts an air spring outboard five-link structure. The main layout feature of its structure is that the air spring is arranged outside the vehicle frame to bear the vertical load; there are a total of four longitudinal thrust rods up and down responsible for transmitting braking force and driving force, and maintaining the motion posture of the suspension and axle during the jumping process; one lateral thrust rod is responsible for the lateral force of the traditional vehicle; the anti-roll bar and hanger system are responsible for enhancing the roll stiffness of the vehicle, so that the whole vehicle has better lateral stability performance; the shock absorber is arranged at the rear side to provide system damping force.

[0003] However, there are also some problems in the use of this suspension:

[0004] 1) The number of components is large and the degree of integration is poor. The installation operation steps are numerous, which is not conducive to mass production in batches;

[0005] 2) The suspension occupies too much space in the whole vehicle, which is not conducive to the overall vehicle layout;

[0006] 3) It is necessary to add three cross beams to the vehicle frame at the front support of the thrust rod, the hanger of the stabilizer bar, and the position of the lateral thrust rod to realize the connection of components and the increase of strength, which is not conducive to the lightweight of the whole vehicle. Content of the Utility Model

[0007] The purpose of the utility model is to provide a front air suspension for a composite structure bus to solve the problems put forward in the above background technique.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: A front air suspension for a composite structure bus, including two airbag brackets installed on the axle. An air spring is installed on the top of the airbag bracket, and a shock absorber is installed on one side of the airbag bracket. A leaf spring is installed on the side of the airbag bracket away from the shock absorber. Front brackets are arranged at the ends of the two leaf springs close to each other. The same upper longitudinal thrust rod is installed between the front bracket and the corresponding airbag bracket, and the same lateral thrust rod is installed between the two airbag brackets.

[0009] Preferably, the leaf spring includes a vertical leaf spring. The same axle tube is installed at the ends of the two vertical leaf springs close to each other. Bushings I are installed at both ends of the axle tube. A lower mounting seat is arranged at the bottom of the front bracket, and the bushing I is installed in the lower mounting seat.

[0010] Preferably, a bushing II is installed at the end of the vertical leaf spring away from the axle tube, and the bushing II is connected to the airbag bracket.

[0011] Preferably, a groove is formed on the inner wall of the lower mounting seat, a boss is arranged outside the first bushing, and the boss is installed in the groove.

[0012] Preferably, the top output end of the shock absorber is connected with a mounting bracket through a bracket, and the air spring is installed at the bottom of the mounting bracket.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Two lower longitudinal thrust rods and one lateral stabilizer bar are combined and changed into a leaf spring, and at the same time, the stabilizer bar hanger is cancelled, and a stabilizer bar hanger mounting cross beam is also cancelled at the frame position, greatly simplifying the number of components and the structure. At the same time, a large space is vacated in the middle of the frame, which can be used for arranging other components of the whole vehicle or increasing the storage space.

[0015] The leaf spring structure of the present utility model combines the functions of the lower longitudinal thrust rod and the stabilizer bar, with higher integration. At the same time, the stabilizer bar hanger and the hanger mounting cross beam are cancelled, and the suspension components are integrated, reducing the installation points and increasing the available space of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a top view structural diagram of the present utility model;

[0018] Figure 3 is a side view structural diagram of the present utility model.

[0019] In the figure: 1, airbag support; 2, shock absorber; 3, air spring; 4, lateral thrust rod; 5, upper longitudinal thrust rod; 6, leaf spring; 7, front bracket; 61, vertical leaf spring; 62, shaft tube; 63, first bushing; 64, second bushing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1 - 3, the present utility model provides a technical solution: a composite structure front air suspension for a bus, which includes two airbag supports 1 installed on the axle. An air spring 3 is installed on the top of the airbag support 1, and a shock absorber 2 is installed on one side of the airbag support 1. A leaf spring 6 is installed on the side of the airbag support 1 away from the shock absorber 2. Front brackets 7 are provided at the ends of the two leaf springs 6 close to each other. The same upper longitudinal thrust rod 5 is installed between the front bracket 7 and the corresponding airbag support 1. The same transverse thrust rod 4 is installed between the two airbag supports 1.

[0022] In the present utility model, the leaf spring 6 includes a vertical leaf spring 61. The same axle tube 62 is installed at the ends of the two vertical leaf springs 61 close to each other. Bushings one 63 are installed at both ends of the axle tube 62. A lower mounting seat is provided at the bottom of the front bracket 7, and the bushing one 63 is installed in the lower mounting seat.

[0023] In the present utility model, a bushing two 64 is installed at the end of the vertical leaf spring 61 away from the axle tube 62, and the bushing two 64 is connected to the airbag support 1.

[0024] In the present utility model, a groove is formed on the inner wall of the lower mounting seat, a boss is provided outside the bushing one 63, and the boss is installed in the groove.

[0025] In the present utility model, the top output end of the shock absorber 2 is connected with a mounting frame through a bracket, and the air spring 3 is installed at the bottom of the mounting frame.

[0026] In the present utility model: the airbag support is connected to the axle and provides interfaces for the air spring, shock absorber, upper longitudinal thrust rod, and leaf spring; the front end of the leaf spring is installed at the lower end of the front bracket through a bushing, and the rear end is installed on the airbag support through a bushing;

[0027] In the present utility model, when the suspension starts or brakes, the vertical leaf spring undertakes the role of the original lower longitudinal thrust rod and transmits the force in the front-rear direction; when the vehicle rolls, an angular difference is formed between the left and right vertical leaf springs, twisting the axle tube welded into one body. The torsional deformation of the axle tube plays the role of a lateral stabilizer bar, providing the roll stiffness of the suspension. At the same time, since the bushing one of the leaf spring is also the center of the axle tube and the leaf spring, there is no movement interference during the movement of both sides, thus eliminating the stabilizer bar hanger and the frame cross beam for installing the hanger.

[0028] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A front air suspension for a composite structure bus, comprising two airbag brackets (1) mounted on an axle, characterized in that: An air spring (3) is installed at the top of the airbag support seat (1), and a shock absorber (2) is installed on one side of the airbag support seat (1). A leaf spring (6) is installed on the side of the airbag support seat (1) away from the shock absorber (2). Front brackets (7) are provided at the ends of the two leaf springs (6) close to each other. An upper longitudinal thrust rod (5) is installed between the front bracket (7) and the corresponding airbag support seat (1). A transverse thrust rod (4) is installed between the two airbag support seats (1).

2. The front air suspension of a composite structure passenger car according to claim 1, characterized in that: The leaf spring (6) includes a vertical leaf spring (61). A same shaft tube (62) is installed at the ends of the two vertical leaf springs (61) close to each other. Bushings one (63) are installed at both ends of the shaft tube (62). A lower mounting seat is provided at the bottom of the front bracket (7), and the bushing one (63) is installed in the lower mounting seat.

3. The front air suspension of a composite structure passenger car according to claim 2, characterized in that: A bushing two (64) is installed at the end of the vertical leaf spring (61) away from the shaft tube (62), and the bushing two (64) is connected to the airbag support seat (1).

4. The front air suspension of a composite structure passenger car according to claim 2, characterized in that: A groove is formed on the inner wall of the lower mounting seat. A boss is provided on the outer side of the bushing one (63), and the boss is installed in the groove.

5. The front air suspension of a composite structure bus according to claim 1, characterized in that: The top output end of the shock absorber (2) is connected with a mounting frame through a bracket, and the air spring (3) is installed at the bottom of the mounting frame.

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