Full-bearing rear air suspension structure

Abstract

The utility model discloses a full-bearing rear air suspension structure which comprises an upper thrust rod seat installed at the upper end of an axle and two longitudinal thrust rods installed on a lower plate support of the axle, a V-shaped thrust rod is installed on the upper thrust rod seat, air spring supports are installed on the two sides of the top of the axle respectively, and the two longitudinal thrust rods are installed on a lower plate support of the axle respectively. An air spring is mounted at the top of the air spring support; the shock absorbers are installed at the two ends of the axle, the stabilizer bar supports are installed on the sides, away from the shock absorbers, of the two ends of the axle, and the same transverse stabilizer bar is installed between the two stabilizer bar supports. The two large air springs are used for bearing and are directly arranged on the axle tubes on the two sides of the axle, traditional C-shaped or straight beam guide arms are omitted, and the suspension has the advantage of light weight, compact structure and high integration.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to a full-load rear air suspension structure. Background Technique

[0002] At present, it has become the mainstream in the passenger car market to apply air suspension to improve comfort. There are various structures of products. For the types of rear drive axle air suspension, there are mainly two types. One is the C-beam structure, and the other is the straight beam structure.

[0003] Both structures use 4 air springs to bear the load, 4 thrust rods in total, upper and lower, for motion guidance, and a lateral stabilizer bar to enhance roll stability. The difference is that in the former, the air springs are arranged outside the frame, and the airbag support beam is a C-shaped arm with a larger size. In the latter, the air springs are arranged below the frame in the way of a straight support beam; the suspension stability of the C-shaped arm structure is slightly better than that of the straight beam structure. However, the common drawback of both is that the C-beam or the straight support beam is relatively heavy (about 95 kg / root for the C-beam, about 55 kg / root for the straight beam, and 2 roots are used for a single suspension), which greatly increases the unsprung mass of the rear suspension, resulting in a large unsprung impact and affecting the handling stability and comfort of the vehicle. Content of the Utility Model

[0004] The purpose of the utility model is to provide a full-load rear air suspension structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a full-load rear air suspension structure, including an upper thrust rod seat installed at the upper end of the axle and two longitudinal thrust rods installed on the lower plate support of the axle. A V-shaped thrust rod is installed on the upper thrust rod seat. Air spring supports are installed on both sides of the top of the axle, and air springs are installed on the tops of the air spring supports.

[0006] Shock absorbers are installed at both ends of the axle. Stabilizer bar supports are installed on the sides of both ends of the axle away from the shock absorbers, and the same lateral stabilizer bar is installed between the two stabilizer bar supports.

[0007] Preferably, two stabilizer bar hangers are installed on the top of the lateral stabilizer bar, and the tops of the two stabilizer bar hangers are installed on the axle.

[0008] Preferably, the shock absorber is vertically arranged, and the shock absorber is installed on the axle through a bracket.

[0009] Preferably, the two longitudinal thrust rods are installed on the lower support plate of the axle through bolts.

[0010] Preferably, the lateral stabilizer bar is of a U-shaped structure.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The integration of the suspension system and the drive axle is greatly realized, reducing the weight by 180 kg compared with the single suspension of the C-beam structure and 100 kg compared with the straight-beam structure. A large amount of unsprung mass is reduced, the unsprung impact is alleviated, and the comfort and handling stability of the air suspension are further improved.

[0013] 2. Loaded by two large air springs, directly arranged on the axle tubes on both sides of the bridge, the traditional C-type or straight-beam guide arms are cancelled. The suspension has great lightweight advantages, with a compact structure and high integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural view of the present utility model;

[0015] Figure 2 It is a schematic side structural view of the present utility model;

[0016] Figure 3 It is a schematic top structural view of the present utility model.

[0017] In the figure: 1. Upper thrust rod seat; 2. V-shaped thrust rod; 3. Longitudinal thrust rod; 4. Shock absorber; 5. Stabilizer bar support; 6. Lateral stabilizer bar; 7. Stabilizer bar hanger; 8. Air spring support; 9. Air spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3 , the present utility model provides a technical solution: a full-load rear air suspension structure, including an upper thrust rod seat 1 installed at the upper end of the axle and two longitudinal thrust rods 3 installed on the lower plate support of the axle. A V-shaped thrust rod 2 is installed on the upper thrust rod seat 1. Air spring supports 8 are installed on both sides of the top of the axle, and air springs 9 are installed on the tops of the air spring supports 8;

[0020] Shock absorbers 4 are installed at both ends of the axle, stabilizer bar supports 5 are installed on the sides of both ends of the axle away from the shock absorbers 4, and the same lateral stabilizer bar 6 is installed between the two stabilizer bar supports 5.

[0021] In the present utility model, two stabilizer bar hangers 7 are installed on the top of the lateral stabilizer bar 6, and the tops of the two stabilizer bar hangers 7 are installed on the axle.

[0022] In the present utility model, the shock absorber 4 is vertically arranged, and the shock absorber 4 is mounted on the axle through a bracket.

[0023] In the present utility model, the two longitudinal thrust rods 3 are mounted on the lower bracket of the axle through bolts.

[0024] In the present utility model, the anti-roll bar 6 is of a U-shaped structure.

[0025] The suspension of the present utility model is a two-airbag full-load-bearing structure with an axle load of ≤9 tons and is applicable to bus models with a length of ≤8.5 m. The product features the cancellation of the C-shaped beam and the straight support beam in the layout type, the direct installation of large-load-bearing and high-stiffness air springs directly above the axle, the use of a 4-link mechanism to form a guiding rod system to transmit braking and driving forces, the anti-roll bar to enhance the anti-roll stability performance, and 2 shock absorbers to provide motion damping for shock absorption.

[0026] The present utility model greatly realizes the integration of the suspension system and the drive axle, reduces the weight by 180 kg compared with the single suspension of the C-shaped beam structure and by 100 kg compared with the straight beam structure, reduces a large amount of unsprung mass, reduces the unsprung impact, and further improves the comfort and handling stability of the air suspension.

[0027] 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 full - load rear air suspension structure, comprising an upper thrust rod seat (1) installed at the upper end of the axle and two longitudinal thrust rods (3) installed on the lower plate support of the axle, characterized in that: A V-shaped thrust rod (2) is installed on the upper thrust rod seat (1). Air spring supports (8) are installed on both sides of the top of the axle, and air springs (9) are installed on the tops of the air spring supports (8). Shock absorbers (4) are installed at both ends of the axle. Stabilizer bar supports (5) are installed on the sides of both ends of the axle away from the shock absorbers (4), and the same transverse stabilizer bar (6) is installed between the two stabilizer bar supports (5).

2. The full-load rear air suspension structure according to claim 1, wherein: Two stabilizer bar hangers (7) are installed on the top of the transverse stabilizer bar (6), and the tops of the two stabilizer bar hangers (7) are installed on the axle.

3. A full-load rear air suspension structure according to claim 1, characterized in that: The shock absorber (4) is vertically arranged and is installed on the axle through a bracket.

4. A full-load rear air suspension structure according to claim 1, characterized in that: Two longitudinal thrust rods (3) are installed on the lower support plate of the axle by bolts.

5. A full - load rear air suspension structure according to claim 1, characterized in that: The transverse stabilizer bar (6) is of a U-shaped structure.

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