Air suspension and vehicle

Abstract

The utility model discloses an air suspension and vehicle, air suspension includes support, guide arm, axle, air spring, one end of guide arm is pivoted on the support, and it includes first lateral wall, second lateral wall, top wall and bottom wall, and the both sides of top wall are respectively linked the top of first lateral wall and second lateral wall, and the both sides of bottom wall are respectively linked the bottom of first lateral wall and second lateral wall, and one through -hole is arranged on first lateral wall and second lateral wall, and the guide arm is connected with the bushing between first lateral wall and second lateral wall, and the both ends of bushing are respectively worn by two through -holes, and the outer circumferential surface of bushing is welded and fixed with first lateral wall and second lateral wall, and the axle is threaded on the bushing, and the outer circumferential surface of axle is welded and fixed together with bushing, and air spring is connected above the top wall of guide arm, the utility model has simplified the connecting structure of axle and guide arm in air suspension, has realized the stability of axle and guide arm connection.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to an air suspension and a vehicle. Background Technology

[0002] Air suspension in a vehicle is used to cushion the vehicle's frame, reducing the impact of the road surface on the frame. An air suspension typically includes a guide arm, axle, air spring, and bracket. The bracket is fixedly connected to the frame, and one end of the guide arm is pivotally connected to the bracket, allowing the guide arm to swing up and down relative to the frame. The axle extends laterally along the vehicle and is connected to the guide arm. The air spring is connected between the other end of the guide arm and the frame. Because the extension direction of the guide arm is perpendicular to the axis of the axle, existing air suspensions typically connect the guide arm and axle with U-bolts. In structures using U-bolts, a lower connecting seat is usually required below the axle, and a support is placed between the axle and the guide arm. This results in a complex structure at the axle-guide arm connection. Furthermore, the high-frequency up-and-down swing of the guide arm can easily cause the nuts on the U-bolts to loosen, leading to poor stability in the connection between the axle and the guide arm. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose an air suspension with a simple structure that can achieve a stable connection between the axle and the guide arm.

[0004] The second objective of this utility model is to propose a vehicle.

[0005] To achieve the first objective mentioned above, this utility model adopts the following technical solution:

[0006] Air suspension includes brackets, guide arms, axles, and air springs;

[0007] One end of the guide arm is pivotally connected to the bracket, which includes a first side wall, a second side wall, a top wall, and a bottom wall. The top two sides of the top wall are respectively connected to the top of the first side wall and the second side wall, and the bottom two sides of the bottom wall are respectively connected to the bottom of the first side wall and the second side wall. A through hole is provided on both the first side wall and the second side wall. A bushing is connected to the guide arm and placed between the first side wall and the second side wall. The two ends of the bushing are respectively passed through the two through holes, and the outer peripheral surface of the bushing is welded and fixed to the first side wall and the second side wall.

[0008] The axle passes through the bushing, and the outer circumferential surface of the axle is welded and fixed to the bushing.

[0009] The air spring is connected to the top wall of the guide arm.

[0010] The bushing has a through groove extending from its inner wall to its outer circumference, and the periphery of the through groove forms an annular weld with the outer circumference of the axle.

[0011] The bushing has a thickness of D and an outer diameter of R, where D / R is 0.046~0.051.

[0012] The length of the through groove is aligned with the axial direction of the axle, and the through groove is rectangular or elliptical.

[0013] The upper surface of the top wall is flat, and the bottom wall has a structure that is high in the middle and low at both ends in the direction of the extension of the guide arm.

[0014] The first sidewall is perpendicular to the axis of the axle, and the second sidewall forms an angle with the axis of the axle, so that the width of the top wall gradually increases from one end of the guide arm to the other end, and the bottom of the air spring is connected above the end of the top wall away from the bracket.

[0015] The first and second sidewalls are formed by bending the top wall downwards from both sides, and the bottom wall is welded to the bottom of the first and second sidewalls from both sides.

[0016] To achieve the second objective mentioned above, this utility model adopts the following technical solution:

[0017] Vehicles, including those with air suspension as described above.

[0018] The beneficial effects of this utility model are as follows:

[0019] In this invention, the guide arm has a hollow structure with through holes on two opposite side walls. A bushing is installed inside the guide arm, and after the bushing passes through the through holes on the two side walls, it is welded to the two side walls of the guide arm. The axle passes through the bushing and is welded to the bushing. The bushing is used as a transitional connection component to fix the axle and the guide arm together, which simplifies the connection structure between the axle and the guide arm in the air suspension and achieves stability in the connection between the axle and the guide arm. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 View from direction A;

[0022] Figure 3 for Figure 1 Schematic diagram of the middle guide arm;

[0023] Figure 4 for Figure 3 View from direction B;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of the middle bushing. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model discloses an air suspension system, which includes a bracket 10, a guide arm 20, an axle 30, and an air spring 40. The top of the bracket 10 is welded to the vehicle frame, and one end of the guide arm 20 is pivotally connected to the bracket 10, giving the guide arm 20 the freedom to swing up and down relative to the vehicle frame. The guide arm 20 includes a first side wall 21, a second side wall 22, a top wall 23, and a bottom wall 24. The first side wall 21 and the second side wall 22 are arranged opposite to each other. The two sides of the top wall 23 are respectively connected to the tops of the first side wall 21 and the second side wall 22, and the two sides of the bottom wall 24 are respectively connected to the bottoms of the first side wall 21 and the second side wall 22. The first side wall 21, the second side wall 22, the top wall 23, and the bottom wall 24 form a crossbeam structure. A through hole 211 is provided on the first side wall 21. A through hole 221 is provided on the second sidewall 22. Through holes 211 and 221 are arranged opposite each other. A bushing 50 is provided on the guide arm 20. The bushing 50 has a cylindrical structure and is placed between the first sidewall 21 and the second sidewall 22. Both ends of the bushing 50 protrude from the through holes 211 and 221 respectively, so that a small part of both ends of the bushing 50 protrudes from the outer surfaces of the first sidewall 21 and the second sidewall 22. The part of the bushing 50 protruding from the outer surface of the first sidewall 21 is welded to the outer surface of the first sidewall 21 to fix the outer peripheral surface of the bushing 50 to the first sidewall 21. The part of the bushing 50 protruding from the outer surface of the second sidewall 22 is welded to the outer surface of the second sidewall 22 to fix the outer peripheral surface of the bushing 50 to the second sidewall 22, thereby fixing the bushing 50 to the guide arm 20. In the bushing 50, the outer circumferential surface of the axle 30 is welded and fixed to the bushing 50, thereby fixing the axle 30 to the guide arm 20. The air spring 40 is connected above the top wall 23 of the guide arm 20. Specifically, the air spring 40 may be located at the end of the guide arm 20 away from the bracket 10.

[0027] In this invention, the guide arm 20 has a hollow structure, with through holes opened on two opposite side walls. A bushing is installed inside the guide arm 20, and after the bushing passes through the through holes on the two side walls, the bushing is welded to the two side walls of the guide arm 20. The axle 30 passes through the bushing and is welded to the bushing. The bushing is used as a transitional connecting component to fix the axle 30 and the guide arm 20 together, which simplifies the connection structure between the axle and the guide arm in the air suspension and achieves stability in the connection between the axle and the guide arm.

[0028] In a preferred embodiment, the bushing 50 is provided with a through groove 51 extending from its inner wall to its outer peripheral surface. The periphery of the through groove 51 forms an annular weld with the outer peripheral surface of the axle 30. By providing the through groove 51, the bushing 50 and the axle 30 have a relatively large welding area, thereby ensuring the connection stability between the bushing 50 and the axle 30. The bushing 50 has a thickness of D and an outer diameter of R, where D / R is 0.046~0.051. Generally, the thickness of the bushing 50 is set to 7.2~8.9 mm. The bushing 50 can be formed by punching and winding a metal sheet; alternatively, it can be formed by machining a round tube of appropriate size. The bushing 50 can also be formed by welding two arc-shaped sheet metal pieces together. Using bushing 50 as a transition connector ensures a stable connection between guide arm 20 and axle 30, while avoiding excessive damage to the outer circumferential surface of axle 30 during welding, thus ensuring that the strength of axle 30 meets the requirements.

[0029] The length direction of the aforementioned through groove 51 is consistent with the axial direction of the axle 30, that is, the size of the through groove 51 in the axial direction of the axle 30 is relatively large. The through groove 51 can be set as an ellipse. In other embodiments, the through groove 51 can be set as a rectangle.

[0030] To facilitate the installation of the air spring 40, the top wall 23 of the guide arm 20 is set as a plane; in addition, in the extension direction of the guide arm 20, the bottom wall 24 has a structure that is high in the middle and low at both ends, so that the overall height of the guide arm 20 is smaller in the middle and larger at both ends, which makes it convenient to pivot one end of the guide arm 20 onto the bracket 10. At the same time, it is convenient to open relatively large through holes 211 and 221 on the first side wall 21 and the second side wall 22 at the other end of the guide arm 20.

[0031] The first sidewall 21 is perpendicular to the axis of the axle 30, and the second sidewall 22 forms an angle with the axis of the axle 30, causing the width of the top wall 23 to gradually increase from one end of the guide arm 20 (the end pivotally connected to the bracket 10) towards the other end. Thus, the end of the top wall 23 away from the bracket 10 of the guide arm 20 has a relatively large width. The bottom of the air spring 40 is connected above the end of the top wall 23 away from the bracket 10, providing a larger installation area for the air spring 40. The first sidewall 21 and the second sidewall 22 are formed by bending downwards from both sides of the top wall 23, and the two sides of the bottom wall 24 are welded and fixed to the bottom of the first sidewall 21 and the second sidewall 22, respectively.

[0032] The vehicle of this invention includes the aforementioned air suspension. Other structures of the vehicle are the same as those in the prior art and will not be described in detail here.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air suspension system, characterized in that, Includes brackets, guide arms, axles, and air springs; One end of the guide arm is pivotally connected to the bracket, which includes a first side wall, a second side wall, a top wall, and a bottom wall. The top two sides of the top wall are respectively connected to the top of the first side wall and the second side wall, and the bottom two sides of the bottom wall are respectively connected to the bottom of the first side wall and the second side wall. A through hole is provided on both the first side wall and the second side wall. A bushing is connected to the guide arm and placed between the first side wall and the second side wall. The two ends of the bushing are respectively passed through the two through holes, and the outer peripheral surface of the bushing is welded and fixed to the first side wall and the second side wall. The axle passes through the bushing, and the outer circumferential surface of the axle is welded and fixed to the bushing. The air spring is connected to the top wall of the guide arm.

2. The air suspension as described in claim 1, characterized in that, The bushing has a through groove extending from its inner wall to its outer circumference, and the periphery of the through groove forms an annular weld with the outer circumference of the axle.

3. The air suspension as described in claim 2, characterized in that, The bushing has a thickness of D and an outer diameter of R, where D / R is 0.046~0.

051.

4. The air suspension as described in claim 2, characterized in that, The length of the through groove is aligned with the axial direction of the axle, and the through groove is rectangular or elliptical.

5. The air suspension as described in claim 1, characterized in that, The upper surface of the top wall is flat, and the bottom wall has a structure that is high in the middle and low at both ends in the direction of the extension of the guide arm.

6. The air suspension as described in claim 1, characterized in that, The first sidewall is perpendicular to the axis of the axle, and the second sidewall forms an angle with the axis of the axle, so that the width of the top wall gradually increases from one end of the guide arm to the other end, and the bottom of the air spring is connected above the end of the top wall away from the bracket.

7. The air suspension as described in claim 4, characterized in that, The first and second sidewalls are formed by bending the top wall downwards from both sides, and the bottom wall is welded to the bottom of the first and second sidewalls from both sides.

8. A vehicle, characterized in that, Includes the air suspension as described in any one of claims 1-7.

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