Connection structure of air suspension guide arm and support and air suspension

Abstract

The utility model discloses a kind of connecting structure of air suspension guiding arm and support and air suspension, the connecting structure of air suspension guiding arm and support includes support fixed on vehicle frame, guiding arm;Support includes two side walls, and the rear side between two side walls forms an opening, and the one end of guiding arm is inserted into the two side walls between support via the opening;Between two side walls, a rotating shaft is fixed, and the one end of guiding arm is provided with the mounting pipe located at the periphery of rotating shaft, and an annular rubber sleeve is arranged between mounting pipe and rotating shaft, and the inner edge surface of rubber sleeve is tightly attached to the outer circumferential surface of rotating shaft, and the outer edge surface is tightly attached to the inner surface of mounting pipe.The utility model can avoid rigid impact between guiding arm and rotating shaft, prevent the deformation of rotating shaft on support due to rigid impact, and ensure that air suspension can work normally.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a connection structure between an air suspension guide arm and a bracket, and an air suspension. Background Technology

[0002] Air suspension typically includes a guide arm, a bracket, an air spring, and an axle. The bracket is fixed to the vehicle frame, one end of the guide arm is pivotally connected to the bracket, and the air spring is installed between the other end of the guide arm and the vehicle frame. The axle passes through the guide arm. During vehicle operation, the reaction force generated by the road surface on the tires is transmitted to the guide arm via the axle, causing the guide arm to swing relative to the bracket. The air spring is used to buffer the swing of the guide arm to reduce vehicle frame vibration. The guide arm and the bracket are pivotally connected by a pivot that runs through them. The guide arm and the pivot are rigidly fitted. Vibrations generated during vehicle operation cause continuous rigid impacts between the guide arm and the pivot, resulting in deformation of the pivot and affecting the normal operation of the air suspension. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to propose a connection structure between an air suspension guide arm and a bracket, which can buffer the guide arm and prevent deformation of the pivot connecting the guide arm and the bracket.

[0004] The second objective of this utility model is to propose an air suspension system.

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

[0006] The air suspension guide arm and bracket connection structure includes a bracket fixed on the vehicle frame and a guide arm; the bracket includes two side walls, and an opening is formed between the rear sides of the two side walls. One end of the guide arm extends through the opening into the space between the two side walls of the bracket; a rotating shaft is fixed between the two side walls, and a mounting tube located around the rotating shaft is provided at one end of the guide arm. An annular rubber sleeve is provided between the mounting tube and the rotating shaft, with the inner edge of the rubber sleeve tightly against the outer circumferential surface of the rotating shaft and the outer edge tightly against the inner surface of the mounting tube.

[0007] At least one groove is provided on both end faces of the rubber sleeve. The extension trajectory of the groove is arc-shaped, and the center of the arc falls on the central axis of the rubber sleeve.

[0008] The grooves on the two end faces of the rubber sleeve are aligned, and a support rib is formed between the two grooves at the middle position along the length of the rubber sleeve.

[0009] Two opposing grooves are provided on each end face of the rubber sleeve. The groove includes a first section and two second sections located at the two ends of the first section. The two side walls of the groove are inclined towards the two sides of the groove at the junction of the first and second sections, so that the width of the second section of the groove is greater than the width of the first section.

[0010] A wear-resistant pad is fixed to the inner surface of each of the two side walls of the bracket. The two wear-resistant pads are placed outside the rubber sleeve and the two ends of the mounting tube, respectively. A pad hole is provided in the middle of the wear-resistant pad. The two ends of the rubber sleeve are provided with ribs located around the central hole. The two ribs on the rubber sleeve are respectively inserted into the pad holes of the two wear-resistant pads.

[0011] The pivot is a connecting bolt that passes through the two side walls of the bracket. A lock nut is screwed onto the connecting bolt. The nut and lock nut of the connecting bolt are pressed against the outer surfaces of the two side walls, respectively. A wear-resistant sleeve is fitted onto the part of the connecting bolt located between the two side walls, and a rubber sleeve is fitted over the wear-resistant sleeve. The guide arm includes a top wall, two side walls that bend downwards from both sides of the top wall, and a bottom wall welded and fixed between the bottoms of the two side walls. The outer edge of the mounting tube is welded and fixed to the ends of the top wall, the bottom wall, and the two side walls.

[0012] To achieve the second objective mentioned above, this utility model adopts the following technical solution:

[0013] Air suspension, including the connection structure between the air suspension guide arm and the bracket mentioned above.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention features a deformable rubber sleeve between the mounting tube of the pivot and the guide arm. This rubber sleeve forms an elastic support structure between the pivot and the guide arm, providing a buffer for the guide arm and the pivot, preventing rigid impact between them, and thus preventing deformation of the pivot on the bracket due to rigid impact, ensuring the normal operation of the air suspension. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of the rubber sleeve;

[0019] Figure 4 for Figure 1 A cross-sectional view of the rubber sleeve. Detailed Implementation

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0021] like Figure 1 , 2 As shown in Figures 3 and 4, this utility model provides a connection structure between an air suspension guide arm and a bracket. The structure includes a bracket 10 and a guide arm 20. The bracket 10 is fixed to the vehicle frame, and one end of the guide arm 20 is pivotally connected to the bracket 10. Specifically, the bracket 10 includes two opposing side walls 11, and an opening 12 is formed between the rear sides of the two side walls 11. One end of the guide arm 20 extends through the opening 12 into the space between the two side walls 11 of the bracket 10. A rotating shaft is fixed between the two side walls 11. One end of the guide arm 20 is provided with a mounting tube 24 located around the rotating shaft. An annular rubber sleeve 40 is provided between the mounting tube 24 and the rotating shaft. The inner edge of the rubber sleeve 40 is in close contact with the outer circumferential surface of the rotating shaft, and the outer edge is in close contact with the inner surface of the mounting tube 24.

[0022] Because a deformable rubber sleeve 40 is provided between the outside of the rotating shaft and the mounting tube 24 of the guide arm 20, an elastic support structure is formed between the rotating shaft and the guide arm 20 through the rubber sleeve 40, which plays a buffering role for the guide arm 20 and the rotating shaft, avoiding rigid impact between the guide arm 20 and the rotating shaft, thereby preventing the rotating shaft on the bracket 10 from deforming due to rigid impact, and ensuring that the air suspension can work normally.

[0023] In a preferred embodiment, at least one groove 41 is provided on each of the two end faces 401 of the rubber sleeve 40. The extension trajectory of the groove 41 is arc-shaped, and the center of the arc of the groove 41 falls on the central axis of the rubber sleeve 40. The groove 41 on the rubber sleeve 40 allows for a relatively large deformation, thus providing better cushioning for the mounting tube 24 and the rotating shaft. The grooves 41 on the two end faces 401 of the rubber sleeve 40 are positioned opposite each other. The depth of the grooves 41 is appropriately set so that a supporting rib 42 is formed between the opposite grooves 41 on the two end faces 401, located at the midpoint of the length of the rubber sleeve 40. By providing the grooves 41, the deformation of the rubber sleeve 40 can be increased, and the supporting rib 42 located between the two grooves 41 allows the rubber sleeve 40 to quickly rebound and return to its original position after deformation.

[0024] In this invention, two grooves 41 are provided on each end face 401 of the rubber sleeve 40. The two grooves 41 on the same end face 401 are arranged opposite each other. The angle at which the grooves 41 extend circumferentially in the rubber sleeve 40 is less than 180°. Preferably, the angle at which the grooves 41 extend circumferentially in the rubber sleeve 40 is 100~114°. To further improve the elastic support effect of the rubber sleeve 40, the grooves 41 are designed with non-uniform widths. Specifically, the groove 41 includes a first segment 411 and two second segments 412 located at the two ends of the first segment 411. The two side walls of the groove 41 are inclined towards the two sides of the groove at the junction of the first segment 411 and the second segment 412, so that the width of the second segment 412 in the groove 41 is greater than the width of the first segment 411.

[0025] To reduce wear on the bracket 10, rubber sleeve 40, and mounting tube 24, a wear-resistant pad 13 is fixed on the inner surface of the two side walls 11 of the bracket 10. The two wear-resistant pads 13 are respectively placed outside the two ends of the rubber sleeve 40 and the mounting tube 24. A pad hole 131 is provided in the middle of the wear-resistant pad 13. The two ends of the rubber sleeve 40 are respectively provided with a rib 43 located around its central hole 402. The two ribs 43 on the rubber sleeve 40 are respectively inserted into the pad holes 131 of the two wear-resistant pads 13.

[0026] For ease of installation, the aforementioned pivot is a connecting bolt 30. Mounting holes are provided on both side walls 11 of the bracket 10. The connecting bolt 30 passes through both side walls 11 from the outside of one of the side walls 11. A locking nut 31 is screwed onto the connecting bolt 30. The nut of the connecting bolt 30 and the locking nut 31 are respectively pressed against the outer surface of the two side walls 11. A wear-resistant sleeve 32 is also fitted on the connecting bolt 30. A rubber sleeve 40 is fitted on the outside of the wear-resistant sleeve 32. During assembly, the rubber sleeve 40 is inserted into the mounting tube 24, and the wear-resistant sleeve 32 is inserted into the rubber sleeve 40. Then, the mounting tube 24 of the guide arm 20 is inserted between the two side walls 11 through the opening 12 of the bracket 10, so that the wear-resistant sleeve 32 is aligned with the mounting holes on the two side walls 11. Then, the connecting bolt 30 passes through one of the side walls 11. Finally, the locking nut 31 is tightened to complete the assembly of the guide arm 20 and the bracket 10.

[0027] The guide arm 20 includes a top wall 21, two side walls 22, and a bottom wall 23. The two side walls 22 are formed by bending downward from both sides of the top wall 21. The bottom wall 23 is welded and fixed between the bottoms of the two side walls 22. The outer edge of the mounting tube 24 is welded and fixed to the ends of the top wall 21, the two side walls 22, and the bottom wall 24.

[0028] The air suspension of this utility model includes the connection structure between the air suspension guide arm and the bracket described above. Other structures of the air suspension are the same as those in the prior art and will not be described in detail here.

[0029] 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. A connection structure between an air suspension guide arm and a bracket, characterized in that, It includes a bracket and a guide arm fixed on the frame; the bracket includes two side walls, with an opening formed between the rear sides of the two side walls, and one end of the guide arm extends through the opening into the space between the two side walls of the bracket; a rotating shaft is fixed between the two side walls, and one end of the guide arm is provided with a mounting tube located around the rotating shaft, and an annular rubber sleeve is provided between the mounting tube and the rotating shaft, with the inner edge of the rubber sleeve tightly attached to the outer circumferential surface of the rotating shaft and the outer edge tightly attached to the inner surface of the mounting tube.

2. The connection structure between the air suspension guide arm and the bracket as described in claim 1, characterized in that, At least one groove is provided on both end faces of the rubber sleeve. The extension trajectory of the groove is arc-shaped, and the center of the arc falls on the central axis of the rubber sleeve.

3. The connection structure between the air suspension guide arm and the bracket as described in claim 2, characterized in that, The grooves on the two end faces of the rubber sleeve are aligned, and a support rib is formed between the two grooves at the middle position along the length of the rubber sleeve.

4. The connection structure between the air suspension guide arm and the bracket as described in claim 2, characterized in that, Two opposing grooves are provided on each end face of the rubber sleeve. The groove includes a first section and two second sections located at the two ends of the first section. The two side walls of the groove are inclined towards the two sides of the groove at the junction of the first and second sections, so that the width of the second section of the groove is greater than the width of the first section.

5. The connection structure between the air suspension guide arm and the bracket as described in claim 1, characterized in that, A wear-resistant pad is fixed to the inner surface of each of the two side walls of the bracket. The two wear-resistant pads are placed outside the rubber sleeve and the two ends of the mounting tube, respectively. A pad hole is provided in the middle of the wear-resistant pad. The two ends of the rubber sleeve are provided with ribs located around the central hole. The two ribs on the rubber sleeve are respectively inserted into the pad holes of the two wear-resistant pads.

6. The connection structure between the air suspension guide arm and the bracket as described in claim 1, characterized in that, The rotating shaft is a connecting bolt that runs through the two side walls of the bracket. A lock nut is screwed onto the connecting bolt. The nut and lock nut of the connecting bolt are pressed against the outer surfaces of the two side walls respectively. A wear-resistant sleeve is fitted on the part of the connecting bolt located between the two side walls. A rubber sleeve is fitted on the outside of the wear-resistant sleeve.

7. The connection structure between the air suspension guide arm and the bracket as described in claim 1, characterized in that, The guide arm includes a top wall, two side walls that bend downwards from both sides of the top wall, and a bottom wall welded and fixed between the bottoms of the two side walls. The outer edge of the mounting tube is welded and fixed to the ends of the top wall, the bottom wall, and the two side walls.

8. An air suspension system, characterized in that, The connection structure between the air suspension guide arm and the bracket as described in any one of claims 1-7 is included.

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