Eight-air-bag air suspension of tractor

Abstract

The utility model discloses a motor tractor eight-air-bag air suspension which comprises four supporting beams installed on an axle and two middle supports installed on a frame, the four supporting beams are arranged in an array mode, the two sides of the top of each supporting beam are connected with an air spring lower support through bolts, and the two middle supports are connected with an air spring lower support through bolts. An air spring is mounted at the top of the air spring lower bracket; and shock absorbers located between the two air springs are fixedly installed at the top of the supporting beam, middle supports installed at the tops of the two air springs are arranged between the two shock absorbers located on the same side, two V-shaped thrust rods are installed between the two middle supports, and the two V-shaped thrust rods are correspondingly arranged. The eight-air-bag full-bearing design is adopted; casting a balance beam as a core connecting part; the suspension structures on the two axles are symmetrical, two pairs of air bags in the middle share one mounting bracket, and compared with two axles and four air bags, the comfort performance is improved; the durability of the suspension is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to an eight-airbag air suspension for a tractor. Background Technique

[0002] The use of air suspension is becoming increasingly popular. Whether it is a trailer, a bus, or a tractor, the application of air suspension can be seen. The forms of suspension are more diverse. However, leaf spring suspension is still widely used on tractors, and there are also air suspensions with two axles and four airbags.

[0003] In this structure, the front end is connected to the frame through a welded guide arm installed under the bridge, and the air spring installed at the rear end only bears part of the load during loading. The rest is shared by the bushing at the front end of the guide arm. Due to the relatively large stiffness of the bushing, the comfort of the entire suspension system is better than that of a leaf spring vehicle, but it is still relatively poor. In addition, the rotating bushing of the guide arm located directly below the axle not only acts as a thrust rod (transmitting longitudinal force during braking and driving, and maintaining the motion posture of the axle at the same time), but also all the unsprung mass is applied to it and then transmitted to the axle, resulting in a large force, so there is a problem of high failure rate in use. Content of the Utility Model

[0004] The purpose of the utility model is to provide an eight-airbag air suspension for a tractor to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an eight-airbag air suspension for a tractor, including four support beams installed on the axle and two intermediate brackets installed on the frame. The four support beams are arranged in an array. Both sides of the top of the support beam are bolted with air spring lower brackets, and air springs are installed on the top of the air spring lower brackets;

[0006] A shock absorber is fixedly installed on the top of the support beam between the two air springs. An intermediate bracket installed on the top of the two air springs is arranged between the two shock absorbers on the same side. Two V-shaped thrust rods are installed between the two intermediate brackets and are arranged correspondingly;

[0007] Stabilizer bar mounting brackets are installed on all four support beams, and the same stabilizer bar is installed on the two stabilizer bar mounting brackets on the same side.

[0008] Preferably, the support beam is bolted to the axle, and the intermediate bracket is bolted to the frame.

[0009] Preferably, an air spring upper bracket is installed on the top of the air spring, and the air spring upper bracket is bolted to the frame.

[0010] Preferably, a shock absorber upper bracket is installed at the top of the shock absorber, and the shock absorber upper bracket is connected to the vehicle frame by bolts.

[0011] Preferably, a stabilizer bar hanger is installed on the stabilizer bar, and a stabilizer bar hanger bracket is installed at the top of the stabilizer bar hanger. The stabilizer bar hanger bracket is connected to the vehicle frame by bolts.

[0012] Preferably, a same straight thrust rod is connected between the support beam and the intermediate bracket by bolts.

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

[0014] Eight-airbag full load-bearing design; the cast balanced beam is used as the core connecting component; moreover, the suspension structures on the two axles are symmetrical, and the middle two pairs of airbags share one mounting bracket, so the comfort performance is improved compared with the two-axle four-airbag; the durability performance of the suspension is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 It is a front structural schematic diagram of the present utility model;

[0017] Figure 3 It is a side structural schematic diagram of the present utility model;

[0018] Figure 4 It is a top structural schematic diagram of the present utility model.

[0019] In the figure: 1, support beam; 2, intermediate bracket; 3, air spring lower bracket; 4, stabilizer bar mounting bracket; 5, stabilizer bar hanger bracket; 6, stabilizer bar hanger; 7, air spring; 8, air spring upper bracket; 9, shock absorber; 10, shock absorber upper bracket; 11, straight thrust rod; 12, V-shaped thrust rod; 13, stabilizer bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] 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 of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4, the present utility model provides a technical solution: a tractor eight-airbag air suspension, which includes four support beams 1 mounted on the axle and two intermediate brackets 2 mounted on the vehicle frame. The four support beams 1 are arranged in an array. On both sides of the top of the support beam 1, air spring lower brackets 3 are connected by bolts, and an air spring 7 is mounted on the top of the air spring lower bracket 3;

[0022] A shock absorber 9 is fixedly mounted on the top of the support beam 1 between the two air springs 7. An intermediate bracket 2 mounted on the tops of the two air springs 7 is arranged between the two shock absorbers 9 on the same side. Two V-shaped thrust rods 12 are mounted between the two intermediate brackets 2, and the two V-shaped thrust rods 12 are arranged correspondingly;

[0023] Stabilizer bar mounting brackets 4 are mounted on all four support beams 1, and the same stabilizer bar 13 is mounted on the two stabilizer bar mounting brackets 4 on the same side.

[0024] The support beam is of a casting structure, and connection interfaces with the lower longitudinal thrust rod, air spring, shock absorber, stabilizer bar, and axle are provided thereon, and it is the main component.

[0025] In the present utility model, the support beam 1 is connected to the axle by bolts, and the intermediate bracket 2 is connected to the vehicle frame by bolts.

[0026] In the present utility model, an air spring upper bracket 8 is mounted on the top of the air spring 7, and the air spring upper bracket 8 is connected to the vehicle frame by bolts.

[0027] In the present utility model, a shock absorber upper bracket 10 is mounted on the top of the shock absorber 9, and the shock absorber upper bracket 10 is connected to the vehicle frame by bolts.

[0028] In the present utility model, a stabilizer bar hanger 6 is mounted on the stabilizer bar 13, and a stabilizer bar hanger bracket 5 is mounted on the top of the stabilizer bar hanger 6. The stabilizer bar hanger bracket 5 is connected to the vehicle frame by bolts.

[0029] In the present utility model, the same straight thrust rod 11 is connected between the support beam 1 and the intermediate bracket 2 by bolts.

[0030] In the present utility model: The front and rear air springs bear 100% of the vertical load, and the characteristics of the air spring with low natural frequency and high comfort are maximally exerted, and the comfort of the suspension system is improved. At the same time, the strengthened lower thrust rod and V-shaped thrust rod undertake the guiding role, the force is dispersed and the functions are dispersed, completely avoiding the situation of poor stress on the center bushing of the double-axis four-airbag structure, and improving the durability of the suspension.

[0031] 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 principles 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 tractor eight-airbag air suspension, comprising four support beams (1) mounted on the axle and two intermediate brackets (2) mounted on the vehicle frame, characterized in that: An array of four support beams (1) is provided. On both sides of the top of each support beam (1), an air spring lower bracket (3) is connected by bolts, and an air spring (7) is installed on the top of the air spring lower bracket (3). A shock absorber (9) is fixedly installed on the top of the support beam (1) between two air springs (7). An intermediate bracket (2) installed on the tops of the two air springs (7) is provided between two shock absorbers (9) on the same side. Two V-shaped thrust rods (12) are installed between the two intermediate brackets (2), and the two V-shaped thrust rods (12) are arranged correspondingly. Stabilizer bar mounting brackets (4) are installed on all four support beams (1), and the same stabilizer bar (13) is installed on two stabilizer bar mounting brackets (4) on the same side.

2. The eight-airbag air suspension of a tractor according to claim 1, wherein: The support beam (1) is connected to the axle by bolts, and the intermediate bracket (2) is connected to the vehicle frame by bolts.

3. The eight-airbag air suspension for a tractor according to claim 1, characterized in that: An air spring upper bracket (8) is installed on the top of the air spring (7), and the air spring upper bracket (8) is connected to the vehicle frame by bolts.

4. The eight-airbag air suspension for a tractor according to claim 1, wherein: A shock absorber upper bracket (10) is installed on the top of the shock absorber (9), and the shock absorber upper bracket (10) is connected to the vehicle frame by bolts.

5. The eight-airbag air suspension for a tractor according to claim 1, wherein: A stabilizer bar hanger (6) is installed on the stabilizer bar (13), and a stabilizer bar hanger bracket (5) is installed on the top of the stabilizer bar hanger (6). The stabilizer bar hanger bracket (5) is connected to the vehicle frame by bolts.

6. The eight-airbag air suspension for a tractor according to claim 1, characterized in that: The same straight thrust rod (11) is connected between the support beam (1) and the intermediate bracket (2) by bolts.

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