Composite air suspension

Abstract

The utility model discloses a combined type air suspension which comprises a U-shaped support, two side vertical supporting frames, a V-shaped thrust rod, two air bags and two shock absorbers, the U-shaped support comprises two side cross arms and a cross beam, the bottom ends of the two side vertical supporting frames are respectively and correspondingly connected with the front ends of the two side cross arms in a rotating mode, and the V-shaped thrust rod is connected with the two side cross arms in a rotating mode. Thrust rod supports are fixedly installed on the opposite sides of the upper ends of the vertical supporting frames on the two sides correspondingly and used for installing V-shaped thrust rods. The middle portions of the vertical supporting frames on the two sides are rotationally connected with shock absorber supports respectively and used for installing two shock absorbers, and the two ends of the cross beam are fixedly connected with air bag installation bases respectively and used for installing two air bags. The cross arm is light in self weight, light weight of the whole vehicle is facilitated, and deflection caused by mutual interference of the cross arms on the two sides can be avoided on the basis that the balance and the stability of the vehicle can be improved; in addition, the V-shaped thrust rod, the air bag and the shock absorber can be combined into a whole through one-time installation, and the follow-up vehicle assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to a composite air suspension. Background Art

[0002] Compared with the traditional helical spring suspension, the air suspension can not only effectively improve the comfort of the vehicle, but also well balance the passing performance of the vehicle. According to different road conditions and the signals of the distance sensors, the vehicle computer will judge the change of the body height, and then control the air compressor and the exhaust valve to automatically compress or extend the spring, so as to reduce or increase the ground clearance of the chassis, so as to increase the stability of the vehicle body at high speed or the passing performance on complex road conditions.

[0003] At present, the existing air suspension uses leaf springs on both sides as brackets. In order to prevent the vehicle body from having excessive lateral roll during turning, and thus improve the balance and stability of the vehicle, a lateral thrust rod is installed between the leaf springs through a thrust rod bracket. During the working process of the lateral thrust rod, it will interfere with the leaf springs on both sides, resulting in yaw. In addition, the leaf spring itself is relatively heavy, which is not conducive to the lightweight of the whole vehicle. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and provide a composite air suspension, which is light in weight, conducive to the lightweight of the whole vehicle, and can avoid the yaw caused by the interference between the two cross arms on both sides on the basis of improving the balance and stability of the vehicle; in addition, by installing once, the V-shaped thrust rod, the airbag and the shock absorber can be integrated, so as to improve the subsequent vehicle assembly efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A composite air suspension, comprising a U-shaped bracket, vertical support frames on both sides, a V-shaped thrust rod, two airbags and two shock absorbers, wherein: the U-shaped bracket includes cross arms on both sides and a cross beam fixedly connected between the rear ends of the cross arms on both sides; the bottom ends of the vertical support frames on both sides are respectively rotatably connected to the front ends of the cross arms on both sides, and thrust rod brackets are respectively fixedly installed on the upper ends of the vertical support frames on both sides, opposite to each other, for installing the V-shaped thrust rod; shock absorber brackets are respectively rotatably connected to the middle parts of the vertical support frames on both sides, for installing the two shock absorbers; airbag mounting seats are respectively fixedly connected to both ends of the cross beam, for installing the two airbags.

[0007] Further, the cross arms on both sides are square parts formed by casting, and elliptical square through holes are respectively arranged at the rear ends of the cross arms on both sides.

[0008] Furthermore, ball joints are installed at the front ends and middle parts of the two lateral cross arms.

[0009] Furthermore, the bottom ends of the two vertical support frames are fixedly connected to the pins of the two ball joints at the front end respectively, and the two shock absorber brackets on both sides are fixedly connected to the pins of the two ball joints in the middle respectively.

[0010] Furthermore, the cross beam is an elliptical square steel pipe, and both ends of the elliptical square steel pipe are fixedly installed in the corresponding elliptical square through holes on both sides by interference fit.

[0011] Furthermore, clamping components are fixedly sleeved at both ends of the elliptical square steel pipe, and each clamping component includes an upper clamping ring and a lower clamping ring which are fixedly connected.

[0012] Furthermore, the two airbag mounting seats on both sides are fixedly connected to the upper clamping rings on both sides respectively.

[0013] Furthermore, a positioning pin penetrates through the rear end of the corresponding lateral cross arm and one end of the elliptical square steel pipe from top to bottom, locking the elliptical square steel pipe at the rear end of the corresponding lateral cross arm.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model adopts the laterally cast two cross arms (square parts), and fixedly connects an elliptical square steel pipe between the rear ends of the two lateral cross arms to form a U-shaped bracket, which has good stress performance, replaces the existing leaf spring, effectively reduces its own weight, and is beneficial to the lightweight of the whole vehicle; on the basis of this structure, a V-shaped thrust rod can be equipped to replace the lateral thrust rod, which can improve the balance and stability of the vehicle and avoid the yaw caused by the interference between the two lateral cross arms; in addition, by installing once, the V-shaped thrust rod, airbag and shock absorber can be integrated, improving the subsequent vehicle assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a partial structural schematic diagram of the present utility model.

[0018] Figure 3 is Figure 2 a schematic enlarged view of the structure of part A in

[0019] Figure 4 is Figure 2 a schematic enlarged view of the structure of part B in

[0020] Figure 5 is Figure 2Schematic enlarged view of the structure of part C.

[0021] Figure 6 Schematic view of the structure of the U-shaped bracket in the present utility model. Detailed implementation manners

[0022] 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 of 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.

[0023] See Figures 1-6 , a compound air suspension, including a U-shaped bracket 1, two vertical support frames 2 on both sides, a V-shaped thrust rod 3, two air bags 4 and two shock absorbers 5. The U-shaped bracket 1 includes two cross arms 6 on both sides and a cross beam 7 fixedly connected between the rear ends of the two cross arms 6 on both sides. The bottom ends of the two vertical support frames 2 on both sides are respectively rotatably connected to the front ends of the two cross arms 6 on both sides. Thrust rod brackets 8 are respectively fixedly installed on the upper ends of the two vertical support frames 2 on the opposite sides for installing the V-shaped thrust rod 3; shock absorber brackets 9 are respectively rotatably connected to the middle parts of the two vertical support frames 2 for installing the two shock absorbers 5. Air bag mounting seats 10 are respectively fixedly connected to both ends of the cross beam 7 for installing the two air bags 4.

[0024] In the present utility model, both cross arms 6 on both sides are square parts formed by casting, and elliptical square through holes are respectively provided at the rear ends of the two cross arms 6 on both sides.

[0025] In the present utility model, ball joints 11 are respectively installed at the front ends and middle parts of the two cross arms 6 on both sides.

[0026] In the present utility model, the bottom ends of the two vertical support frames 2 on both sides are respectively fixedly connected to the pins of the two ball joints 11 at the front ends, so as to realize the respective rotational connection of the two vertical support frames 2 to the front ends of the two cross arms 6 on both sides. The two shock absorber brackets 9 on both sides are respectively fixedly connected to the pins of the two ball joints 11 in the middle, so as to realize the respective rotational connection of the two shock absorber brackets 9 on both sides to the middle parts of the two vertical support frames 2 on both sides.

[0027] In the present utility model, the cross beam 7 is an elliptical square steel pipe with good stress resistance. The two ends of the elliptical square steel pipe 7 are respectively fixedly installed in the two elliptical square through holes by interference fit, so as to realize the fixed connection of the cross beam 7 between the rear ends of the two cross arms 6 on both sides.

[0028] In the present utility model, clamping hoop assemblies 12 are respectively fixedly sleeved on both ends of the elliptical square steel pipe 7. The clamping hoop assemblies 12 include an upper hoop 13 and a lower hoop 14 fixedly connected to each other.

[0029] In the present utility model, the airbag mounting seats 10 on both sides are respectively fixedly connected to the upper hoop rings 13 on both sides, so as to fixedly connect the airbag mounting seats 10 on both sides to both ends of the oval square steel pipe 7 respectively.

[0030] In the present utility model, a positioning pin 15 sequentially penetrates through the rear end of the corresponding side cross arm 6 and one end of the oval square steel pipe 7 from top to bottom, locking the oval square steel pipe 7 to the rear end of the corresponding side cross arm 6, thereby strengthening the connection between the oval square steel pipe 7 and the cross arms 6 on both sides.

[0031] The following further describes the present utility model with reference to the accompanying drawings:

[0032] Since the present utility model adopts the cast side cross arms 6 (square parts), and fixedly connects the oval square steel pipe 7 between the rear ends of the side cross arms 6, and thus forms the U-shaped bracket 1, therefore, it has good stress resistance, replaces the existing leaf spring, effectively reduces its own weight, and is beneficial to the lightweight of the whole vehicle.

[0033] On the basis of the above structure, a V-shaped thrust rod 3 can be equipped to replace the existing lateral thrust rod. On the basis of improving the balance and stability of the vehicle, the yaw caused by the interference between the side cross arms 6 is avoided.

[0034] In addition, by one-time installation, the V-shaped thrust rod 3, the airbag 4 and the shock absorber 5 can be integrated, improving the subsequent vehicle assembly efficiency.

[0035] Although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0036] Therefore, the above is only the preferred embodiment of the present application, and is not used to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A composite air suspension, comprising a U-shaped bracket, two vertical support frames on both sides, a V-shaped thrust rod, two air bags and two shock absorbers, characterized in that: The U-shaped bracket includes two side horizontal arms and a horizontal beam fixedly connected between the rear ends of the two side horizontal arms. The bottom ends of the two side vertical support frames are rotatably connected to the front ends of the two side horizontal arms respectively. The upper ends of the two side vertical support frames are fixedly installed with thrust rod brackets on the opposite sides for installing the V-shaped thrust rod; the middle parts of the two side vertical support frames are rotatably connected with shock absorber brackets for installing the two shock absorbers, and the two ends of the horizontal beam are fixedly connected with airbag mounting seats for installing the two airbags.

2. A composite air suspension according to claim 1, characterized in that: The two side cross arms are both cast square pieces, and the rear ends of the two side cross arms are respectively provided with oval square through holes.

3. A composite air suspension according to claim 2, characterized in that: The front ends and middle parts of the two side cross arms are both equipped with ball joints.

4. A composite air suspension according to claim 3, characterized in that: The bottom ends of the vertical support frames on both sides are fixedly connected to the pins of the two ball joints at the front end, and the shock absorber brackets on both sides are fixedly connected to the pins of the two ball joints in the middle.

5. The composite air suspension according to claim 2, characterized in that: The crossbeam is an oval square steel tube, and the two ends of the oval square steel tube are respectively fixed in the oval square through holes on both sides through interference fit.

6. A composite air suspension according to claim 5, characterized in that: Both ends of the oval square steel pipe are respectively fixedly sleeved with a clamp assembly, and the clamp assembly includes an upper clamp ring and a lower clamp ring which are fixedly connected to each other.

7. The composite air suspension according to claim 6, characterized in that: The airbag mounting seats on both sides are respectively and fixedly connected to the upper hoop rings on both sides.

8. The composite air suspension according to claim 5, characterized in that: A positioning pin is provided which penetrates the rear end of the corresponding one side cross arm and one end of the oval square steel pipe in sequence from top to bottom, and locks the oval square steel pipe to the rear end of the corresponding one side cross arm.

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