Axle assembly and trailer

Abstract

The utility model discloses a kind of axle assembly and trailer, axle assembly includes axle, fixed guide arm with axle, camshaft, adjusting arm, brake chamber;Guide arm includes outer side wall, inner side wall opposite with outer side wall, top wall between connecting outer side wall and the top of inner side wall, bottom wall between connecting in outer side wall and the bottom of inner side wall;Detachable fixed connection has a mounting plate on the outer side wall of guide arm, a shaft sleeve is fixedly connected on mounting plate, camshaft is connected in shaft sleeve and is pivoted with shaft sleeve, adjusting arm is located between the outer side wall and inner side wall of guide arm and is installed in the inner side end of camshaft;Guide arm is fixed with air chamber seat, brake chamber is installed on air chamber seat, and its connecting fork is connected on the connecting arm of adjusting arm.The utility model simplifies the structure of axle assembly, makes axle assembly easy to assemble;Shorten the length of camshaft, improve the braking performance of vehicle.

Description

Technical Field

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

[0002] In some axle assemblies equipped with air suspension and drum brakes, camshaft brackets need to be welded to the axle for mounting the camshaft. Due to the installation positions of the two guide arms of the suspension system on the axle, and because the brake and wheel end components need to be installed on the part of the guide arm located on the outer side of the axle, the camshaft bracket is usually welded to the part of the axle located on the inner side of the guide arm. This results in a large distance between the camshaft and the brake, a long camshaft size, a long distance between the S-shaped cam of the camshaft and the camshaft bracket, and a large bending moment from the brake on the S-shaped cam, which affects the braking performance of the drum brake. Furthermore, the need to weld the camshaft bracket to the axle and to traverse the guide arm when installing the camshaft makes the assembly of the axle assembly more difficult. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose an axle assembly that makes the camshaft relatively small, reduces the bending moment on the S-shaped cam on the camshaft, and reduces the assembly difficulty of the axle assembly.

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

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

[0006] The axle assembly includes an axle, a guide arm fixed to the axle, a camshaft, an adjusting arm, and a brake chamber;

[0007] The guide arm includes an outer side wall, an inner side wall opposite to the outer side wall, a top wall connecting the top of the outer side wall and the inner side wall, and a bottom wall connecting the bottom of the outer side wall and the inner side wall; a mounting plate is detachably fixedly connected to the outer side wall of the guide arm, a bushing is fixedly connected to the mounting plate, a camshaft passes through the bushing and pivotally engages with the bushing, and an adjusting arm is located between the outer side wall and the inner side wall of the guide arm and is mounted on the inner end of the camshaft;

[0008] An air chamber seat is fixed on the guide arm, and the brake air chamber is installed on the air chamber seat. Its connecting fork is connected to the connecting arm of the adjusting arm.

[0009] The bushing is provided with a radially outwardly extending flange, which is fixedly connected to the inner side of the mounting plate by bolts.

[0010] The mounting plate has a waist hole, and the bushing passes through the waist hole.

[0011] A shift fork is connected to the adjusting arm. The extension direction of the shift fork is consistent with the axial direction of the axle. An arc-shaped long groove is opened on the mounting plate. The shift fork passes through the long groove. A boss and a locking nut are provided on the shift fork. The locking nut and the boss are respectively placed on both sides of the mounting plate to clamp the mounting plate so that the shift fork and the mounting plate are fixedly engaged.

[0012] Both the outer and inner walls of the adjusting arm have through holes, and the axle passes through the through holes in the outer and inner walls. The periphery of the through holes on the outer and inner walls is welded and fixed to the outer circumference of the axle.

[0013] The top of the mounting plate is fixed to the top of the outer wall of the guide arm by two connecting bolts that are staggered along the length of the guide arm, and the bottom of the mounting plate is fixed to the bottom of the outer wall of the guide arm by one connecting bolt.

[0014] The air chamber seat is fixedly connected to the lower surface of the bottom wall of the guide arm, and the connecting fork of the brake air chamber is located below the bottom wall of the guide arm and extends toward the adjusting arm.

[0015] To achieve the second objective mentioned above, this utility model adopts the following technical solution:

[0016] Trailers, including the aforementioned axle assemblies.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention only requires fixing a mounting plate on the guide arm as the mounting base for the camshaft, eliminating the need to weld a camshaft bracket onto the axle, thus simplifying the structure of the axle assembly and making it easier to assemble. Furthermore, the camshaft only needs to extend inward from the drum brake to the inner cavity of the guide arm, shortening the length of the camshaft, reducing the bending torque on the S-shaped cam on the camshaft, and improving the braking performance of the vehicle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 View from direction A;

[0021] Figure 3 for Figure 1 A schematic diagram of the mounting plate. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0023] like Figure 1 , 2As shown, this utility model discloses an axle assembly comprising an axle 10, a guide arm 20, an adjusting arm 40, a camshaft 50, and a brake chamber 60. The guide arm 20 is connected to the axle 10, and its extension direction is perpendicular to the circumference of the axle 10. The guide arm 20 includes an outer wall 21, an inner wall 22 opposite to the outer wall 21, a top wall 23 connecting the tops of the outer wall 21 and the inner wall 22, and a bottom wall 24 connecting the bottoms of the outer wall 21 and the inner wall 22. The outer wall 21, the inner wall 22, the top wall 23, and the bottom wall 24 form a hollow guide arm 20. One end of the guide arm 20 is pivotally connected to a bracket, and an air spring is installed between the other end and the vehicle frame. The camshaft 50 is located at the end of the guide arm 20 where the air spring is installed. Specifically, in the guide arm... A mounting plate 30 is detachably fixed to the outer wall 21 of the arm 20. The mounting plate 30 is located on the outer wall 21 near the air spring and protrudes from the end of the outer wall 21. The mounting plate 30 provides a mounting base for the camshaft 50 on the outer wall 21. Specifically, a bushing 51 is fixedly connected to the mounting plate 30. The bushing 51 is provided with a shaft hole extending along the axial direction of the axle 10. The camshaft 50 passes through the shaft hole of the bushing, so that the camshaft 50 can rotate relative to the mounting plate 30. The adjusting arm 40 is installed on the inner end of the camshaft 50 and the adjusting arm 40 is located between the outer wall 21 and the inner wall 22. That is, a part of the adjusting arm 40 is placed inside the hollow structure of the guide arm 20. The S-shaped cam of the camshaft 50 is located on the outer end of the camshaft 50. An air chamber seat 61 is fixed on the guide arm 20, and a brake air chamber 60 is installed on the air chamber seat 61. The connecting fork 62 of the brake air chamber 60 is connected to the connecting arm 41 of the adjusting arm 40.

[0024] During assembly, the guide arm 20 is fixed together with the axle 10, and then the bushing 51 and the mounting plate 30 are assembled together to form a component. The component is then placed inside the outer wall 21. Next, the camshaft 50 is passed through the bushing 51 from the outside of the outer wall 21. Inside the middle structure of the guide arm 20, the adjusting arm 40 is installed on the camshaft 50. Finally, the connecting fork 62 of the brake chamber 60 is connected to the connecting arm 41 of the adjusting arm 40.

[0025] In this invention, only a mounting plate 30 needs to be fixed on the guide arm 20 as the mounting base for the camshaft 50. There is no need to weld the camshaft bracket on the axle 10, which simplifies the structure of the axle assembly and makes the axle assembly easier to assemble. Furthermore, the camshaft 50 only needs to extend inward from the drum brake to the inner cavity of the guide arm 20, which shortens the length of the camshaft 50, reduces the bending moment on the S-shaped cam on the camshaft, and improves the braking performance of the vehicle.

[0026] In a preferred embodiment, in order to facilitate the connection between the bushing 51 and the mounting plate 30, a radially outwardly extending flange 52 is provided on the bushing 51. The flange 52 is fixed to the inner side of the mounting plate 30 by bolts. The flange 52 and bolts are used to realize the assemblability between the bushing 51 and the mounting plate 30, thereby further facilitating the assembly of the axle assembly. In particular, during assembly, it is convenient to position the camshaft 50 so that the S-shaped cam of the camshaft 50 can better cooperate with the drum brake. A slotted hole 32 is provided on the mounting plate 30, and the bushing 51 passes through the slotted hole 32. During assembly, the bushing 51 is passed through the slotted hole 32 from the inside of the mounting plate 30, and the flange 52 is placed against the inner side of the mounting plate 30. Then, bolts are used to pass through the flange 52 and the pre-set bolt holes on the mounting plate 30 to fix the flange 52 and the mounting plate 30 together. By providing the slotted hole 32, the bushing 51 can be moved inside the slotted hole 32 when the bolts are inserted, so that the bolt holes on the flange 52 can be aligned with the bolt holes on the mounting plate 30, thereby further facilitating assembly.

[0027] A shift fork 42 is connected to the adjusting arm 40. The extension direction of the shift fork 42 is consistent with the axial direction of the axle 10. An arc-shaped long groove 31 is provided on the mounting plate 30. The shift fork 42 passes through the long groove 31. A boss 43 and a locking nut 44 are provided on the shift fork 42. The boss 43 is located on the inner side of the mounting plate 30. The locking nut 44 is screwed onto the shift fork 42 and located on the outer side of the mounting plate 30. During assembly, the shift fork 42 passes through the long groove 31, so that the boss 43 abuts against the inner side of the mounting plate 30. The locking nut 44 is screwed onto the part of the shift fork 42 that passes through the long groove 31. The locking nut 44 is tightened. The mounting plate 30 is clamped by the locking nut 44 and the boss 43, so that the shift fork 42 is fixedly engaged with the mounting plate 30. The long slot 31 is set to be arc-shaped, so that the shift fork 42 can be inserted into the long slot 31 at any installation angle of the adjusting arm 40, and finally the shift fork 42 is fixed to the mounting plate 30 to prevent interference caused by misalignment of the shift fork 42 and the mounting plate 30 during assembly.

[0028] Both the outer sidewall 21 and the inner sidewall 22 of the guide arm 20 are provided with through holes. The axle 10 passes through the through holes on the outer sidewall 21 and the inner sidewall 22, so that the axle 10 is set perpendicular to the guide arm 20. The part of the outer sidewall 21 and the inner sidewall 22 located at the periphery of the through hole is welded to the contact position of the outer peripheral surface of the axle 10, so that the axle 10 and the guide arm 20 are welded and fixed together.

[0029] The top of the mounting plate 30 is fixed to the top of the outer wall 21 of the guide arm 20 by two connecting bolts that are staggered along the length of the guide arm 20, and the bottom of the mounting plate 30 is fixed to the bottom of the outer wall 21 of the guide arm 20 by a connecting bolt.

[0030] In order to make more efficient use of space, the air chamber seat 61 is fixedly connected to the lower surface of the bottom wall 24 of the guide arm 20. After the brake air chamber 60 is installed on the air chamber seat 61, the connecting fork 62 on it passes through the air chamber seat 61 and is located below the bottom wall 24 and extends toward the adjusting arm 40, so that the connecting fork 62 is connected to the connecting arm 41 of the adjusting arm 40.

[0031] The trailer of this utility model includes the aforementioned axle assembly. The other structures of the trailer are the same as those in the prior art and will not be described in detail here.

[0032] 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 axle assembly, characterized in that, Includes the axle, guide arm fixed to the axle, camshaft, adjusting arm, and brake chamber; The guide arm includes an outer side wall, an inner side wall opposite to the outer side wall, a top wall connecting the top of the outer side wall and the inner side wall, and a bottom wall connecting the bottom of the outer side wall and the inner side wall; a mounting plate is detachably fixedly connected to the outer side wall of the guide arm, a bushing is fixedly connected to the mounting plate, a camshaft passes through the bushing and pivotally engages with the bushing, and an adjusting arm is located between the outer side wall and the inner side wall of the guide arm and is mounted on the inner end of the camshaft; An air chamber seat is fixed on the guide arm, and the brake air chamber is installed on the air chamber seat. Its connecting fork is connected to the connecting arm of the adjusting arm.

2. The axle assembly as described in claim 1, characterized in that, The bushing is provided with a radially outwardly extending flange, which is fixedly connected to the inner side of the mounting plate by bolts.

3. The axle assembly as described in claim 2, characterized in that, The mounting plate has a waist hole, and the bushing passes through the waist hole.

4. The axle assembly as described in claim 1, characterized in that, A shift fork is connected to the adjusting arm. The extension direction of the shift fork is consistent with the axial direction of the axle. An arc-shaped long groove is opened on the mounting plate. The shift fork passes through the long groove. A boss and a locking nut are provided on the shift fork. The locking nut and the boss are respectively placed on both sides of the mounting plate to clamp the mounting plate so that the shift fork and the mounting plate are fixedly engaged.

5. The axle assembly as described in claim 1, characterized in that, Both the outer and inner walls of the adjusting arm have through holes, and the axle passes through the through holes in the outer and inner walls. The periphery of the through holes on the outer and inner walls is welded and fixed to the outer circumference of the axle.

6. The axle assembly as described in claim 1, characterized in that, The top of the mounting plate is fixed to the top of the outer wall of the guide arm by two connecting bolts that are staggered along the length of the guide arm, and the bottom of the mounting plate is fixed to the bottom of the outer wall of the guide arm by one connecting bolt.

7. The axle assembly as described in claim 1, characterized in that, The air chamber seat is fixedly connected to the lower surface of the bottom wall of the guide arm, and the connecting fork of the brake air chamber is located below the bottom wall of the guide arm and extends toward the adjusting arm.

8. A trailer, characterized in that, Includes the axle assembly as described in any one of claims 1-7.

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