Air suspension structure and axle

Abstract

The utility model discloses an air suspension structure and an axle, the air suspension structure is installed on the axle and comprises a guide arm, and the air suspension structure is characterized in that the guide arm comprises a lower shell and an upper shell; the lower shell is provided with a bottom plate, two opposite sides of the bottom plate are respectively provided with a side plate, the two side plates form a mounting part, and the top of the mounting part is provided with a shaft positioning part; the upper shell comprises two plates, a positioning plate is arranged at the positioning end, close to the shaft positioning portion, of each plate, each positioning plate is provided with a plate body portion welded to the end of the positioning end, and the lower end of the plate body portion is bent and extends back to the mounting groove to form a fixing plate located below the plates and welded to the bottom faces of the plates. And each fixing plate, the end part of the positioning end of one plate and one plate body part form a triangular stable structure, so that the connecting strength between the positioning plate and the plate is improved, the positioning plate and the plate are stably connected, the connecting part between the positioning plate and the plate is prevented from cracking, and the structural strength is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an air suspension structure and a vehicle axle. Background Art

[0002] In order to improve driving comfort and adapt to various complex road conditions, commercial vehicles are equipped with air suspension on their axles. The existing air suspension structure includes an axle, a bracket, a guide arm installed on the axle and an air spring. The bracket is fixed on the frame of the vehicle, and the two ends of the guide arm are respectively located on both sides of the axle, wherein one end of the guide arm is rotatably connected to the bracket through a pivot, and the air spring is installed between the other end of the guide arm and the frame of the vehicle. During the driving process of the vehicle, the air spring plays a buffering role on the frame through the expansion and contraction of the air spring; the guide arm includes a lower shell and two upper shells located above the lower shell, and an axle mounting portion for mounting the axle is provided on the top of the lower shell, and the two upper shells are respectively located on both sides of the axle mounting portion and covered on the top of the lower shell, and a positioning plate is welded and fixed to one end of the two upper shells close to the axle mounting portion, and the two positioning plates and the axle mounting portion surround a positioning groove for matching with the axle, and when the guide arm is installed, the guide arm and the axle are locked with U-bolts. However, after the air suspension structure has been used for a period of time, cracks may appear at the connection between the two positioning plates and the upper shell, resulting in a short service life and affecting the safety of vehicle driving. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an air suspension structure and axle which can improve structural strength and have a simple structure.

[0004] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0005] An air suspension structure, mounted on the axle, comprises a guide arm, wherein the guide arm comprises a lower shell and an upper shell located above the lower shell;

[0006] The lower shell has a bottom plate, and two side plates are respectively provided on opposite sides of the bottom plate, and the two side plates form a mounting portion, and a shaft positioning portion is provided on the top of the mounting portion;

[0007] The upper shell body includes two plates, which are respectively located on opposite sides of the shaft positioning portion along the axial direction of the axle and are welded and fixed to the top of the mounting portion. A positioning plate is provided at the positioning end of each plate close to the shaft positioning portion. Each positioning plate has a plate body welded to the end of the positioning end. The two plate bodies are respectively located on opposite sides of the shaft positioning portion and the three of them form a mounting groove that matches the axle. The lower end of the plate body is bent and extended away from the mounting groove to form a fixed plate located below the plate and welded to the bottom surface of the plate.

[0008] Furthermore, each of the fixing plates is provided with a welding hole penetrating therethrough from top to bottom.

[0009] Further, the fixing plate extends along the length direction of the plate, and there are multiple welding holes, which are distributed along the length direction of the plate and include a first welding hole and a second welding hole away from the axis positioning portion relative to the first welding hole, and the cross-sectional area of ​​the second welding hole is smaller than the cross-sectional area of ​​the first welding hole.

[0010] Furthermore, the two plate edges of each of the plate body parts are respectively provided with an ear plate located outside the outer side wall of the mounting part, and the outer side wall of the mounting part is provided with a support plate located below the ear plate and welded to the bottom surface of the ear plate corresponding to each ear plate.

[0011] Furthermore, one end of the mounting portion is provided with a pivot portion for connecting to the bracket of the air suspension structure, and the support plate close to the pivot portion is a first support plate. One end of the first support plate close to the pivot portion is bent downward and extended to form an extension plate welded to the outer side wall of the mounting portion, and the outer side wall of the mounting portion is welded with a rib plate located between the first support plate and the extension plate and welded to the first support plate and the extension plate.

[0012] Furthermore, the extension plate bends and extends downward and away from the pivot portion to form a reinforcing plate located below the base plate and welded to the bottom surface of the base plate, and the lower end of the rib plate extends downward to the upper surface of the reinforcing plate and is welded to the upper surface of the reinforcing plate.

[0013] Furthermore, the two plate edges of each of the plate body portions extend axially along the mounting groove and in opposite directions to form an extension portion located outside the outer side wall of the mounting portion, and the two extension portions are bent and extended in opposite directions to the mounting groove to form an ear plate, and the extension plate is welded with a connecting ear on the plate surface close to the pivotal portion, and the rib plate is provided with a through hole passing through it.

[0014] Furthermore, an arc-shaped plate adapted to the axle is welded to the top surface of the shaft positioning portion, the arc-shaped plate is bent downward relative to the top of the mounting portion and is provided with a through hole extending therethrough from top to bottom, the positioning ends of the two plates are bent and extended upward, the two plate bodies are higher than the arc-shaped plates and are respectively welded to the two axial side edges of the arc-shaped plates, and the plate surfaces of the two plate bodies close to each other and the upper surface of the arc-shaped plates form the mounting groove.

[0015] Furthermore, one end of the mounting portion is provided with a pivot portion for connecting to the bracket of the air suspension structure, and an upper surface of the plate away from the pivot portion is formed with a mounting surface for mounting an air spring of the air suspension structure and corresponding to the other end of the mounting portion, and two opposite outer side walls of the mounting portion correspond to each of the plate bodies and have a slot passing through them, and the plate body body is engaged with the slot.

[0016] Each positioning plate of the air suspension structure of the utility model has a plate body welded to the end of the plate positioning end, the two plate bodies are respectively located on opposite sides of the axle positioning portion and the three of them surround a mounting groove that matches the axle, the lower end of the plate body is bent and extended away from the mounting groove to form a fixed plate located below the plate and welded to the bottom surface of the plate, each fixed plate and the end of a plate positioning end and a plate body form a triangular stable structure, improving the connection strength between the positioning plate and the plate to make the two connected firmly, preventing the connection between the positioning plate and the plate from cracking, and further improving the structural strength. The air suspension structure of the utility model is easy to install, easy to process and has high structural strength.

[0017] An embodiment of the utility model further provides a vehicle axle, comprising an axle and the air suspension structure described in any one of the above embodiments, wherein the air suspension structure is installed on the axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partially exploded three-dimensional schematic diagram of the air suspension structure of an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram from another perspective;

[0020] Figure 3 for Figure 1 Schematic diagram of the three-dimensional combination. DETAILED DESCRIPTION

[0021] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0022] like Figures 1 to 3 As shown, an embodiment of the utility model provides an air suspension structure, which is installed on an axle (not shown), and includes a guide arm 1. The guide arm 1 includes a lower shell 11 and an upper shell 12 located above the lower shell 11. The upper shell 12 and the lower shell 11 constitute the guide arm 1.

[0023] The lower shell 11 has a bottom plate 111, and a side plate 112 is respectively provided on opposite sides of the bottom plate 111. The side plates 112 form a mounting portion 110, that is, the side plates 112 form two side walls of the mounting portion 110. Specifically, the side plates 112 are bent and extended upward from opposite sides of the bottom plate 111, and the two opposite outer side walls of the mounting portion 110 are provided with a slot 1104 passing through the side corresponding to each plate body 1221. The top of the mounting portion 110 is provided with an axle positioning portion 1101. In this embodiment, in order to improve the structural strength, an arc plate 1103 adapted to the axle is welded on the top surface of the axle positioning portion 1101. The arc plate 1103 is bent downward relative to the top of the mounting portion 110 and is provided with a through hole passing through the top and bottom. One end of the mounting portion 110 is provided with a pivoting portion 1102 for connecting with a bracket (not shown) of an air suspension structure, and the pivoting portion 1102 is rotatably connected with the bracket.

[0024] The upper shell 12 includes two plates 121, which are respectively located on opposite sides of the shaft positioning portion 1101 along the axial direction of the axle and are welded and fixed to the top of the mounting portion 110. Specifically, the two plates 121 are welded to the plate edge surface at the top of the mounting portion 110 to form the top plate of the guide arm 1, that is, the interior of the guide arm 1 is hollow. More specifically, an upper surface of a plate 121 away from the pivot portion 1102 is formed with a mounting surface 124 for mounting an air spring of an air suspension structure and corresponding to the other end of the mounting portion 110.

[0025] Each plate 121 is provided with a positioning plate 122 at the positioning end close to the shaft positioning portion 1101, wherein the positioning ends of the two plate members 121 are bent and extended upward, and the two positioning plates 122 are formed by stamping. Each positioning plate 122 has a plate body 1221 welded to the end of the positioning end, and the two plate bodies 1221 are respectively located on the opposite sides of the shaft positioning portion 1101 and the three of them form a mounting groove 3 that matches the axle; specifically, the plate body 1221 is engaged with the slot 1104, the two plate bodies 1221 are higher than the arc plate 1103 and are respectively welded to the two axial side edges of the arc plate 1103, and the plate surfaces of the two plate bodies 1221 close to each other and the upper surface of the arc plate 1103 form the mounting groove 3; the plate The lower end of the body 1221 is bent and extended toward the mounting groove 3 to form a fixing plate 1222 located below the plate 121 and welded to the bottom surface of the plate 121. Each fixing plate 1222 forms a triangular stable structure with the end of a positioning end of the plate 121 and a plate body 1221, thereby improving the connection strength between the positioning plate 122 and the plate 121 so that the connection between the two is stable and easy to process and install, preventing cracks in the connection between the positioning plate 122 and the plate 121, and further improving the structural strength.

[0026] The fixing plate 1222 extends along the length direction of the plate 121, and has a connection end connected to the plate body 1221 and a free end away from the plate body 1221 relative to the connection end. The fixing plate 1222 gradually decreases from the connection end to the free end to save materials and facilitate installation. In order to further improve the structural strength, each fixing plate 1222 is provided with a welding hole 1223 that passes through it from top to bottom. When welding the fixing plate 1222, the operator welds around the welding hole 1223. In order to further improve the welding strength, in this embodiment, there are multiple welding holes 1223, and the multiple welding holes 1223 are distributed along the length direction of the plate 121 and include a first welding hole 1224 and a second welding hole 1225 away from the shaft positioning portion 1101 relative to the first welding hole 1224. The cross-sectional area of ​​the second welding hole 1225 is smaller than the cross-sectional area of ​​the first welding hole 1224 to improve the welding strength between the fixing plate 1222 and the plate 121.

[0027] In order to further improve the connection strength, an ear plate 1226 located outside the outer wall of the mounting portion 110 is respectively provided on the two plate edges of each plate body 1221. Specifically, the two plate edges of each plate body 1221 respectively extend along the axial direction of the mounting groove 3 and in opposite directions to form an extension portion 1220 located outside the outer wall of the mounting portion 110, and the two extension portions 1220 are respectively bent and extended in opposite directions to the mounting groove 3 to form the ear plate 1226; the outer wall of the mounting portion 110 is provided with a support plate 113 located below the ear plate 1226 and welded to the bottom surface of the ear plate 1226 corresponding to each ear plate 1226, and the support plate 113 is formed by stamping, wherein the support plate 113 close to the pivotal portion 1102 is the first support plate 1131.

[0028] One end of the first support plate 1131 close to the pivot portion 1102 is bent and extended downward to form an extension plate 1134 welded to the outer wall of the mounting portion 110. A rib plate 4 is welded to the outer wall of the mounting portion 110 and is located between the first support plate 1131 and the extension plate 1134 and welded to the first support plate 1131 and the extension plate 1134. The rib plate 4 is provided with a through hole extending therethrough. In this embodiment, the extension plate 1134 is bent and extended downward and away from the pivot portion 1102 to form a reinforcing plate 1135 located below the base plate 111 and welded to the bottom surface of the base plate 111. The lower end of the rib plate 4 extends downward to the upper surface of the reinforcing plate 1135 and is welded to the upper surface of the reinforcing plate 1135. When the positioning plate 122 is subjected to external force, the positioning plate 122 transfers the force to the fixed plate 1222 through the rib plate 4 and the first support plate 1131. The fixed plate 1222 transfers the force to the guide arm 1, that is, the fixed plate 1222 plays a role in transferring the load, thereby further improving the structural strength.

[0029] A connecting ear 5 is welded on the plate surface of the extension plate 1134 near the pivotal portion 1102. There are two connecting ears 5, which are arranged side by side along the axial direction of the axle and are used to install the shock absorber of the air suspension structure. The reducer plays a buffering role and further improves the ride comfort of the vehicle.

[0030] Each positioning plate of the air suspension structure of the utility model has a plate body welded to the end of the plate positioning end, the two plate bodies are respectively located on opposite sides of the axle positioning portion and the three of them surround a mounting groove that matches the axle, the lower end of the plate body is bent and extended away from the mounting groove to form a fixed plate located below the plate and welded to the bottom surface of the plate, each fixed plate and the end of a plate positioning end and a plate body form a triangular stable structure, improving the connection strength between the positioning plate and the plate to make the two connected firmly, preventing the connection between the positioning plate and the plate from cracking, and further improving the structural strength. The air suspension structure of the utility model is easy to install, easy to process and has high structural strength.

[0031] The embodiment of the utility model further provides a vehicle axle (not shown), comprising an axle (not shown) and the air suspension structure described in any one of the above embodiments, wherein the air suspension structure is installed on the axle.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An air suspension structure, mounted on the axle, characterized in that: comprising a guide arm, the guide arm comprising a lower shell and an upper shell located above the lower shell; The lower shell has a bottom plate, and two side plates are respectively provided on opposite sides of the bottom plate, and the two side plates form a mounting portion, and a shaft positioning portion is provided on the top of the mounting portion; The upper shell body includes two plates, which are respectively located on opposite sides of the shaft positioning portion along the axial direction of the axle and are welded and fixed to the top of the mounting portion. A positioning plate is provided at the positioning end of each plate close to the shaft positioning portion. Each positioning plate has a plate body welded to the end of the positioning end. The two plate bodies are respectively located on opposite sides of the shaft positioning portion and the three of them form a mounting groove that matches the axle. The lower end of the plate body is bent and extended away from the mounting groove to form a fixed plate located below the plate and welded to the bottom surface of the plate.

2. The air suspension structure according to claim 1, characterized in that: Each of the fixing plates is provided with a welding hole which passes through the fixing plate from top to bottom.

3. The air suspension structure according to claim 2, characterized in that: The fixing plate extends along the length direction of the plate, and there are multiple welding holes, which are distributed along the length direction of the plate and include a first welding hole and a second welding hole away from the shaft positioning portion relative to the first welding hole, and the cross-sectional area of ​​the second welding hole is smaller than the cross-sectional area of ​​the first welding hole.

4. The air suspension structure according to claim 1, characterized in that: The two plate edges of each plate body are respectively provided with an ear plate located outside the outer side wall of the mounting portion, and the outer side wall of the mounting portion is provided with a support plate located below the ear plate and welded to the bottom surface of the ear plate corresponding to each ear plate.

5. The air suspension structure according to claim 4, characterized in that: One end of the mounting portion is provided with a pivot portion for connecting to the bracket of the air suspension structure, and the support plate close to the pivot portion is the first support plate. One end of the first support plate close to the pivot portion is bent downward and extended to form an extension plate welded to the outer side wall of the mounting portion, and the outer side wall of the mounting portion is welded with a rib plate located between the first support plate and the extension plate and welded to the first support plate and the extension plate.

6. The air suspension structure according to claim 5, characterized in that: The extension plate is bent and extended downward and away from the pivot portion to form a reinforcing plate located below the bottom plate and welded to the bottom surface of the bottom plate. The lower end of the rib plate extends downward to the upper surface of the reinforcing plate and is welded to the upper surface of the reinforcing plate.

7. The air suspension structure according to claim 5, characterized in that: The two plate edges of each plate body extend along the axial direction of the mounting groove and in opposite directions to form an extension portion located outside the outer side wall of the mounting portion, and the two extension portions are bent and extended away from the mounting groove to form an ear plate. The extension plate is welded with a connecting ear on the plate surface close to the pivotal portion, and the rib plate is provided with a through hole passing through it.

8. The air suspension structure according to claim 1, characterized in that: An arc-shaped plate adapted to the axle is welded to the top surface of the shaft positioning portion, the arc-shaped plate is bent downward relative to the top of the mounting portion and is provided with a through hole extending therethrough from top to bottom, the positioning ends of the two plates are bent and extended upward, the two plate bodies are higher than the arc-shaped plates and are respectively welded to the two axial side edges of the arc-shaped plates, and the plate surfaces of the two plate bodies close to each other and the upper surface of the arc-shaped plates form the mounting groove.

9. The air suspension structure according to claim 1, characterized in that: A pivot portion is provided at one end of the mounting portion for connecting to a bracket of the air suspension structure, and a mounting surface corresponding to the other end of the mounting portion and used for mounting an air spring of the air suspension structure is formed on the upper surface of the plate away from the pivot portion, and a slot passing through the two opposite outer walls of the mounting portion is formed corresponding to each of the plate bodies, and the plate body is engaged with the slot.

10. A vehicle axle, characterized in that: The invention comprises an axle and the air suspension structure according to any one of claims 1 to 9, wherein the air suspension structure is installed on the axle.

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