An axle skew adjustment mechanism, suspension system and adjustment method

Abstract

This application relates to an axle skew adjustment mechanism, a suspension system, and an adjustment method. The axle skew adjustment mechanism includes a bushing, a lug, and a bolt. The bushing has an eccentric hole, the axis of which is spaced apart from the axis of the bushing. A first locking structure is provided on the outer periphery of the bushing. A mounting hole is provided at the bottom of the lug, and a second locking structure is provided in the mounting hole. The bushing is inserted into the mounting hole, and the first and second locking structures cooperate to lock the bushing into the mounting hole at different angles. The bolt passes through the eccentric hole and is used to connect the lug and the frame. By passing the bolt through the bushing with the eccentric hole, the first locking structure on the outer periphery of the bushing, and the second locking structure in the mounting hole of the lug, the bushing is rotated, and the first and second locking structures cooperate to lock the bushing into the mounting hole at different angles. The lug and the frame are then re-locked, thus correcting the axle skew without any accessories, preventing loose connections.

Description

Technical Field

[0001] This application relates to the field of automotive assembly technology, specifically to an axle skew adjustment mechanism, a suspension system, and an adjustment method. Background Technology

[0002] Currently, in the manufacturing and assembly process of commercial vehicles as well as subsequent maintenance, the positioning accuracy of the axle is crucial. The axle misalignment directly affects the vehicle's straight-line driving stability, steering return performance, and tire wear. If the vehicle is misaligned, it will cause the vehicle to veer off course and the tires to wear unevenly, and in severe cases, it may even affect driving safety.

[0003] In related technologies, in leaf spring suspension systems, the front end of the leaf spring is typically connected to the vehicle frame via a fixed bracket, and the rear end is connected to the vehicle frame via a balance shaft or hanger. The leaf spring and axle are fastened together with U-bolts. Shims of different thicknesses are added between the leaf spring coil bushing and the frame bracket pin, as well as at the connection between the leaf spring and the U-bolt, to fine-tune the relative position of the leaf spring or axle. Each adjustment requires repeated disassembly of the U-bolt, manual addition or removal of shims, selection of appropriate shims, and repeated measurement and trial assembly, which is time-consuming and labor-intensive, seriously affecting maintenance efficiency. The adjustment accuracy is limited by the thickness specifications of the shims, making continuous and linear fine-tuning impossible. The final accuracy heavily depends on the experience of the operator. At the same time, the stacking of multiple shims introduces additional mating clearances. Under long-term high-frequency vibration working environment, the mating surfaces of multiple shims are prone to fretting wear, leading to loose connections, abnormal noises, or even bolt breakage.

[0004] Therefore, it is necessary to design a new axle skew adjustment mechanism to overcome the above problems. Summary of the Invention

[0005] This application provides an axle skew adjustment mechanism, suspension system, and adjustment method, which can solve the technical problems in the related art where adding shims of different thicknesses to finely adjust the relative position of leaf springs or axles is not only cumbersome, inefficient, and dependent on manual experience, but also introduces additional mating clearances due to the stacking of multiple shims. Under long-term high-frequency vibration working environment, the mating surfaces of multiple shims are prone to fretting wear, resulting in loose connections, abnormal noises, or even bolt breakage.

[0006] In a first aspect, embodiments of this application provide an axle skew adjustment mechanism, comprising: a bushing, a lug, and a bolt. The bushing has an eccentric hole, the axis of which is spaced apart from the axis of the bushing. A first locking structure is provided on the outer periphery of the bushing. The bottom of the lug has a mounting hole, and a second locking structure is provided in the mounting hole. The bushing is inserted into the mounting hole, and the first locking structure and the second locking structure cooperate to lock the bushing into the mounting hole at different angles. The bolt passes through the eccentric hole and is used to connect the lug and the frame.

[0007] The bushing and the first locking structure form an eccentric fit, allowing the bushing to move around the center of the bolt. This movement translates into a slight change in the front and rear position of the leaf spring, adjusting the axle misalignment. Rotating the bushing changes the relative angle between it and the lug. After adjustment, the bushing is locked at the selected angle, and the lug and frame are re-locked. This corrects the axle misalignment without any accessories, reducing the risk of loosening of commercial vehicles under high-frequency vibration and improving vehicle reliability.

[0008] In conjunction with the first aspect, in one embodiment, the first locking structure includes a locating pin and a plurality of locating holes spaced apart along the circumference of the bushing, the locating pin being inserted into one of the locating holes; the second locking structure includes a notch formed in the inner wall of the mounting hole, the locating pin locking the bushing into the mounting hole at different angles by inserting into different locating holes and the notch.

[0009] The positioning pin and the bushing are separate components. The positioning pin engages with the notch, mechanically limiting the bushing and the lug, rigidly preventing the bushing from rotating within the lug. After the bolt and the lug are assembled, the axle skew adjustment mechanism exhibits extremely strong vibration resistance, adapting to the harsh working conditions of commercial vehicles. Demonstratively, the notch is set to one. When the bushing is rotated, the original positioning hole is turned away from the notch, and the positioning hole corresponding to the set angle is aligned with the notch. Inserting the positioning pin allows the bushing and lug to be locked again using the positioning pin and the notch. Due to the bushing's eccentricity, the center of the bushing will rotate around the center of the bolt. The component of this rotation along the length of the leaf spring is directly converted into a linear displacement of the leaf spring's fixed point. By controlling the bushing's rotation angle, continuous and precise control of this displacement can be achieved. Minor changes in the leaf spring's position directly cause corresponding axle sway, correcting the axle skew. After adjustment, only the bolt needs to be tightened; no additional parts are required.

[0010] In conjunction with the first aspect, in one embodiment, the plurality of positioning holes are symmetrically arranged along the axis of the bushing.

[0011] In this example, the bushing is provided with six positioning holes along its circumference, and the included angle between two adjacent positioning holes is set to 60°. An angle indicator is provided on the outer circumference of the bushing. The positioning pin is inserted into the corresponding positioning hole according to the determined bushing rotation angle to realize step adjustment, prevent over-adjustment or misadjustment, and maintenance personnel can complete a certain amount of adjustment without complicated measurement and calculation.

[0012] In conjunction with the first aspect, in one embodiment, the first locking structure includes a positioning pin fixed to the outer periphery of the bushing; the second locking structure includes a plurality of notches formed in the inner wall of the mounting hole, wherein the positioning pin locks the bushing into the mounting hole at different angles by inserting into different notches.

[0013] The positioning pin and the bushing are integrally formed. The bolt is pulled out from the mounting hole and the bushing is rotated so that the positioning pin is aligned with the corresponding notch. The bushing is then locked into the mounting hole at different angles, and the bushing and the lug are re-locked.

[0014] In conjunction with the first aspect, in one embodiment, a plurality of the notches are symmetrically arranged along the axis of the mounting hole.

[0015] In this example, the lug has six notches along the circumference of the mounting hole, and the bushings of two adjacent notches rotate at an angle of 60°. The positioning pin is inserted into the corresponding notch according to the determined bushing rotation angle to achieve step adjustment, preventing over-adjustment or mis-adjustment. Maintenance personnel can complete a certain amount of adjustment without complicated measurement and calculation.

[0016] In conjunction with the first aspect, in one embodiment, the bolt includes a baffle and a screw connected to each other, the bushing is disposed on the side of the baffle near the screw, the bushing is fixed to the lug at different angles by the first locking structure and the second locking structure, and the screw is configured as an eccentric shaft.

[0017] The bolt and the bushing are integrally formed. The first locking structure is a positioning pin, and the second locking structure is a notch. The notch is located inside the mounting hole of the lug. The bushing is locked into the mounting hole at different angles by inserting the positioning pin into different positioning holes and the notch. The screw is an eccentric structure, which includes a rod body and an eccentric block connected to each other. The axis of the rod body and the axis of the eccentric block are spaced apart. The eccentric block is located in the middle position of the rod body. The screw can rotate around the lug to achieve linear displacement of the fixing point of the leaf spring.

[0018] Secondly, embodiments of this application provide a suspension system that includes the aforementioned axle skew adjustment mechanism.

[0019] The axle lug is connected to the vehicle frame via the axle skew adjustment mechanism. The bushing and the first locking structure form an eccentric fit, allowing the bushing to move around the center of the bolt. This movement is converted into a slight change in the front and rear position of the leaf spring, thereby adjusting the axle skew. Rotating the bushing changes the relative angle between the bushing and the axle lug. After adjustment, the bushing is locked at the selected angle, and the axle lug and the vehicle frame are re-locked. This process corrects the axle skew without any accessories or parts, reducing the risk of loosening of commercial vehicles under high-frequency vibrations and improving vehicle reliability.

[0020] Thirdly, embodiments of this application provide a method for adjusting an axle skew adjustment mechanism, which includes the following steps: Loosen the bolts to unlock the first and second locking mechanisms; Rotate the bushing to lock the first and second locking structures, so that the bushing is locked into the mounting hole of the support lug at different angles.

[0021] The process involves loosening the bolts to unlock the first and second locking structures, then rotating the bushing to re-lock the bushing and support lug using the first and second locking structures. This simple and quick operation requires no disassembly of any parts and can be completed in just three steps: loosening, rotating, and tightening, significantly reducing working time.

[0022] In conjunction with the third aspect, in one embodiment, the rotating bushing, locking the first locking structure and the second locking structure, so that the bushing is locked into the mounting hole of the lug at different angles, includes the following steps: Rotate the bushing, insert one end of the locating pin into the locating hole corresponding to the set angle, and insert the other end into the notch, and lock the bushing into the mounting hole at another angle.

[0023] The process involves lifting the vehicle, locating the pin assembly connecting the leaf spring and the frame, loosening the locking nut corresponding to the bolt using a tool, gently tapping the bolt, and pulling the locating pin out of the initial locating hole. Using a tool inserted into the bushing's tool hole, the alignment markings on the axle are observed, and the bushing is slowly rotated. The bushing's rotation angle is determined based on the axle adjustment amount. After the axle is adjusted to the correct position, the locating pin is inserted into the locating hole corresponding to the set angle. The bushing is then tightened into the mounting hole at different angles. The bushing and lugs are retightened, and the bolts are retightened using a wrench. The vehicle is then lowered and a road test is conducted to verify if the misalignment has been resolved. The repair personnel simply need to pull out the locating pin, rotate the bushing to the next locating hole to align with the notch, insert the locating pin into the next locating hole, and lock it in place, completing a precise adjustment and achieving accurate repair.

[0024] In conjunction with the third aspect, in one embodiment, prior to the rotating bushing, the following is further included: The axle adjustment amount is determined based on the eccentricity and bushing rotation angle.

[0025] The axle adjustment amount satisfies the following formula: In the formula For axle adjustment amount, For the eccentricity, The bushing rotation angle is defined as the eccentricity between the bolt axis and the bushing axis. Different eccentricities correspond to bushings that can adjust for different degrees of axle misalignment. By replacing bushings with different eccentricities, coarse adjustment of the range can be achieved, breaking through the limitation of a fixed adjustment range of a single eccentric structure. The bushing rotation angle and axle adjustment amount corresponding to each positioning hole are fixed values. As an example, the eccentricity is selected... =2mm, bushing rotation angle =60°, With an adjustment range of approximately 1.73 mm, complex geometric adjustments are transformed into simple pull-turn-insert step operations, corresponding to a defined adjustment amount, thus standardizing high-precision maintenance and eliminating reliance on manual experience.

[0026] The beneficial effects of the technical solutions provided in this application include: By passing bolts through a bushing with an eccentric hole, a first locking structure is set on the outer periphery of the bushing, and a second locking structure is set in the mounting hole of the lug. By rotating the bushing and using the cooperation of the first and second locking structures to lock it, the bushing is locked into the mounting hole at different angles. The lug and frame are then re-locked, thus correcting the axle misalignment. No accessories or parts are required, avoiding loose connections. This solves the technical problem of using shims of different thicknesses to fine-tune the relative position of the leaf spring or axle in related technologies. This method is not only cumbersome and inefficient, relying on manual experience, but also introduces additional mating clearances due to the stacking of multiple shims. Under long-term high-frequency vibration working environment, the mating surfaces of multiple shims are prone to fretting wear, leading to loose connections, abnormal noises, or even bolt breakage. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of an axle skew adjustment mechanism provided in an embodiment of this application; Figure 2 This is a schematic diagram of the assembly of an axle skew adjustment mechanism with a vehicle frame, provided in an embodiment of this application. Figure 3 A schematic diagram of a bushing provided for an embodiment of this application; Figure 4 A schematic diagram of the bushing and bolt assembly provided in the embodiments of this application. Figure 5 This is a schematic diagram of the eccentric shaft in the bolt provided in the embodiments of this application.

[0029] In the diagram: 1. Bushing; 11. Eccentric hole; 12. Positioning hole; 2. Lug; 21. Mounting hole; 22. Notch; 3. Bolt; 31. Baffle; 32. Screw; 4. Positioning pin. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0031] This application provides an axle skew adjustment mechanism, suspension system, and adjustment method, which can solve the technical problem that by adding shims of different thicknesses to fine-tune the relative position of leaf springs or axles, the operation is not only cumbersome, inefficient, and dependent on manual experience, but also that the stacking of multiple shims will introduce additional mating clearances. Under long-term high-frequency vibration working environment, the mating surfaces of multiple shims are prone to fretting wear, resulting in loose connections, abnormal noises, or even bolt breakage.

[0032] See Figure 1-4 As shown in the figure, this application embodiment provides an axle skew adjustment mechanism, which includes: a bushing 1, a lug 2, and a bolt 3. The bushing 1 has an eccentric hole 11, the axis of the eccentric hole 11 being spaced apart from the axis of the bushing 1. The outer periphery of the bushing 1 has a first locking structure. The bottom of the lug 2 has a mounting hole 21, the mounting hole 21 having a second locking structure. The bushing 1 is inserted into the mounting hole 21, and the first locking structure and the second locking structure cooperate to lock the bushing 1 into the mounting hole 21 at different angles. The bolt 3 passes through the eccentric hole 11 and is used to connect the lug 2 and the frame.

[0033] In this embodiment, the bushing 1 and the first locking structure form an eccentric mating part, allowing the bushing 1 to move around the center of the bolt 3, which is converted into a slight change in the front and rear position of the leaf spring to adjust the axle misalignment. Rotating the bushing 1 changes the relative angle between the bushing 1 and the lug 2. After adjustment, the bushing 1 is locked at the selected angle, and the lug 2 and the frame are re-locked to correct the axle misalignment without any accessories or parts, reducing the risk of loosening of commercial vehicles under high-frequency vibration and improving vehicle reliability.

[0034] This embodiment achieves axle misalignment correction by passing the bolt 3 through the bushing 1 with the eccentric hole 11, setting the first locking structure on the outer periphery of the bushing 1, and setting the second locking structure in the mounting hole 21 of the lug 2. By rotating the bushing 1 and using the cooperation of the first and second locking structures to lock it, the bushing 1 is locked into the mounting hole 21 at different angles. The lug 2 and the frame are then re-locked, eliminating the need for any accessories and avoiding loose connections. This solves the technical problem in related technologies where adding shims of different thicknesses to fine-tune the relative position of the leaf spring or axle is not only cumbersome and inefficient, relying on manual experience, but also introduces additional mating clearances due to the stacking of multiple shims. Under long-term high-frequency vibration working environment, the mating surfaces of multiple shims are prone to fretting wear, leading to loose connections, abnormal noises, or even bolt 3 breakage.

[0035] Further, see Figure 1-4As shown, in some embodiments, the first locking structure includes a positioning pin 4 and a plurality of positioning holes 12 spaced apart along the circumference of the bushing 1, wherein the positioning pin 4 is inserted into one of the positioning holes 12; the second locking structure includes a notch 22 formed in the inner wall of the mounting hole 21, wherein the positioning pin 4 locks the bushing 1 into the mounting hole 21 at different angles by inserting into different positioning holes 12 and the notch 22.

[0036] In this embodiment, the positioning pin 4 and the bushing 1 are separately disposed. The positioning pin 4 is engaged with the notch 22, so that the bushing 1 and the support lug 2 are mechanically and rigidly limited, preventing the bushing 1 from rotating within the support lug 2. After the bolt 3 and the support lug 2 are assembled, the axle skew adjustment mechanism has extremely strong vibration resistance and can adapt to the harsh working conditions of commercial vehicles. Demonstratively, the number of notches 22 is set to one. When the bushing 1 is rotated, the original positioning hole 12 is turned away from the notch 22, and the positioning hole 12 corresponding to the set angle is aligned with the notch 22, and then reinserted. The positioning pin 4 can be used to lock the bushing 1 and the lug 2 again with the notch 22. Since the bushing 1 has an eccentricity, the center of the bushing 1 will make a circular motion around the center of the bolt 3. The component of this circular motion in the length direction of the leaf spring is directly converted into the linear displacement of the leaf spring fixing point. By controlling the rotation angle of the bushing 1, the displacement can be continuously and accurately controlled. The slight change in the front and rear position of the leaf spring directly causes the axle to produce a corresponding sway, thereby correcting the axle skew. After the adjustment is completed, only the bolt 3 needs to be tightened, without any additional parts.

[0037] Further, see Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, a plurality of the positioning holes 12 are symmetrically arranged along the axis of the bushing 1.

[0038] In this embodiment, as an example, the bushing 1 is provided with six positioning holes 12 along its circumference, and the included angle between two adjacent positioning holes 12 is set to 60°. An angle indicator is provided on the outer circumference of the bushing 1. The positioning pin 4 is inserted into the corresponding positioning hole 12 according to the determined bushing rotation angle to realize step adjustment, prevent over-adjustment or misadjustment, and maintenance personnel can complete a certain amount of adjustment without complicated measurement and calculation.

[0039] Further, see Figure 1As shown, in some embodiments, the first locking structure includes a positioning pin 4, which is fixed to the outer periphery of the bushing 1; the second locking structure includes a plurality of notches 22 formed in the inner wall of the mounting hole 21, and the positioning pin 4 locks the bushing 1 into the mounting hole 21 at different angles by inserting into different notches 22.

[0040] In this embodiment, the positioning pin 4 and the bushing 1 are integrally formed. The bolt 3 is pulled out from the mounting hole 21 and the bushing 1 is rotated so that the positioning pin 4 is aligned with the corresponding notch 22. The bushing 1 is locked into the mounting hole 21 at different angles using the positioning pin 4 and the notch 22, and the bushing 1 and the lug 2 are re-locked.

[0041] Further, see Figure 1 As shown, in some embodiments, a plurality of the notches 22 are symmetrically arranged along the axis of the mounting hole 21.

[0042] In this embodiment, as an example, the lug 2 has six notches 22 along the circumference of the mounting hole 21. The bushing rotation angle of two adjacent notches 22 is 60°. The positioning pin 4 is inserted into the corresponding notch 22 according to the determined bushing rotation angle to realize step adjustment, prevent over-adjustment or misadjustment, and maintenance personnel can complete a certain amount of adjustment without complicated measurement and calculation.

[0043] Further, see Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the bolt 3 includes a baffle 31 and a screw 32 connected to each other. The bushing 1 is provided on the side of the baffle 31 near the screw 32. The bushing 1 is fixed to the lug 2 at different angles through the cooperation of the first locking structure and the second locking structure. The screw 32 is set as an eccentric shaft.

[0044] In this embodiment, the bolt 3 and the bushing 1 are integrally formed. The first locking structure is a positioning pin 4, and the second locking structure is a plurality of notches 22. The notches 22 are located inside the mounting hole 21 of the lug 2. The bushing 1 is locked into the mounting hole 21 at different angles by inserting the positioning pin 4 into different positioning holes 12 and notches 22. The screw 32 is set as an eccentric structure. The screw 32 includes a rod body and an eccentric block connected to each other. The axis of the rod body and the axis of the eccentric block are spaced apart. The eccentric block is located in the middle position of the rod body. The screw 32 rotates around the lug 2 to realize the linear displacement of the fixing point of the leaf spring.

[0045] See Figure 1-4As shown, this application embodiment provides a suspension system that includes the aforementioned axle skew adjustment mechanism.

[0046] In this embodiment, the lug 2 is connected to the vehicle frame through the axle skew adjustment mechanism. The bushing 1 and the first locking structure form an eccentric mating part, allowing the bushing 1 to move around the center of the bolt 3, which is converted into a slight change in the front and rear position of the leaf spring to adjust the axle skew. Rotating the bushing 1 changes the relative angle between the bushing 1 and the lug 2. After adjustment, the bushing 1 is locked at the selected angle, and the lug 2 and the vehicle frame are re-locked to correct the axle skew. No accessories or parts are required, reducing the risk of loosening of commercial vehicles under high-frequency vibration and improving vehicle reliability.

[0047] This application provides a method for adjusting an axle skew adjustment mechanism, which includes the following steps: S1: Loosen bolt 3 to unlock the first and second locking structures.

[0048] S2: Rotate bushing 1 to lock the first locking structure and the second locking structure, so that bushing 1 is locked into the mounting hole 21 of the support lug 2 at different angles.

[0049] In this embodiment, the bolt 3 is loosened to unlock the first and second locking structures. Then, the bushing 1 is rotated to lock the bushing 1 and the lug 2 again using the first and second locking structures. The operation is simple and quick, requiring no disassembly of any parts. The adjustment can be completed in just three steps: loosening, rotating, and tightening, which greatly shortens the working time.

[0050] Furthermore, in some embodiments, the process of rotating the bushing 1, locking the first locking structure and the second locking structure, and locking the bushing 1 into the mounting hole 21 of the lug 2 at different angles includes the following steps: Rotate bushing 1, insert one end of positioning pin 4 into positioning hole 12 corresponding to the set angle, and insert the other end into notch 22, and lock bushing 1 into mounting hole 21 at another angle.

[0051] In this embodiment, the vehicle is lifted, the pin assembly connecting the leaf spring and the frame is located, the locking nut corresponding to bolt 3 is loosened with a tool, bolt 3 is tapped lightly, and the positioning pin 4 is pulled out from the initial positioning hole 12. The tool is inserted into the tool hole of bushing 1, the alignment scale on the axle is observed, and bushing 1 is slowly rotated. The bushing rotation angle is determined according to the axle adjustment amount. After the axle is adjusted to the correct position, the positioning pin 4 is inserted into the positioning hole 12 corresponding to the set angle, and bushing 1 is locked into the mounting hole 21 at different angles. Bushing 1 and lug 2 are re-locked, and bolt 3 is re-locked with a wrench. The vehicle is lowered and a road test is conducted to verify whether the deviation has been resolved. The maintenance personnel only need to pull out the positioning pin 4, rotate bushing 1 to the next positioning hole 12 to align with the notch 22, insert the positioning pin 4 into the next positioning hole 12 and lock it, completing a certain amount of adjustment and achieving precise maintenance.

[0052] Furthermore, in some embodiments, prior to the rotating bushing 1, the following is also included: The axle adjustment amount is determined based on the eccentricity and bushing rotation angle.

[0053] In this embodiment, the axle adjustment amount satisfies the following formula: In the formula For axle adjustment amount, For the eccentricity, The bushing rotation angle is defined as the eccentricity between the axis of bolt 3 and the axis of bushing 1. Different eccentricities in bushing 1 can adjust the axle misalignment to different degrees. By replacing bushings 1 with different eccentricities, coarse adjustment of the range can be achieved, breaking through the limitation of a fixed adjustment range of a single eccentric structure. The bushing rotation angle and axle adjustment amount corresponding to each positioning hole 12 are fixed values. As an example, the eccentricity is selected... =2mm, bushing rotation angle =60°, With an adjustment range of approximately 1.73 mm, complex geometric adjustments are transformed into simple pull-turn-insert step operations, corresponding to a defined adjustment amount, thus standardizing high-precision maintenance and eliminating reliance on manual experience.

[0054] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0055] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A vehicle axle misalignment adjustment mechanism, characterized by, It includes: Bushing (1), the bushing (1) is provided with an eccentric hole (11), the axis of the eccentric hole (11) is spaced apart from the axis of the bushing (1), and the outer periphery of the bushing (1) is provided with a first locking structure. The support ear (2) has a mounting hole (21) at its bottom. A second locking structure is provided in the mounting hole (21). The bushing (1) is inserted into the mounting hole (21), and the first locking structure and the second locking structure cooperate to lock the bushing (1) into the mounting hole (21) at different angles. Bolt (3) passes through the eccentric hole (11) and is used to connect the lug (2) and the frame.

2. The axle skew adjustment mechanism as described in claim 1, characterized in that, The first locking structure includes a positioning pin (4) and a plurality of positioning holes (12) spaced apart circumferentially along the bushing (1), wherein the positioning pin (4) is inserted into one of the positioning holes (12). The second locking structure includes a notch (22) formed in the inner wall of the mounting hole (21), and the positioning pin (4) locks the bushing (1) into the mounting hole (21) at different angles by inserting into different positioning holes (12) and the notch (22).

3. The vehicle axle misalignment adjustment mechanism of claim 2, wherein, The plurality of positioning holes (12) are symmetrically arranged along the axis of the bushing (1).

4. The axle skew adjustment mechanism as described in claim 1, characterized in that, The first locking structure includes a positioning pin (4), which is fixed to the outer periphery of the bushing (1); The second locking structure includes multiple notches (22) formed on the inner wall of the mounting hole (21), and the positioning pin (4) locks the bushing (1) into the mounting hole (21) at different angles by inserting into different notches (22).

5. The vehicle axle misalignment adjustment mechanism of claim 4, wherein, The plurality of notches (22) are symmetrically arranged along the axis of the mounting hole (21).

6. The axle skew adjustment mechanism as described in claim 1, characterized in that, The bolt (3) includes a baffle (31) and a screw (32) connected to each other. The bushing (1) is provided on the side of the baffle (31) near the screw (32). The bushing (1) is fixed to the lug (2) at different angles by the first locking structure and the second locking structure. The screw (32) is set as an eccentric shaft.

7. A suspension system, characterized in that, It includes the axle skew adjustment mechanism as described in claims 1-6.

8. A method for adjusting the axle skew adjustment mechanism as described in claim 1, characterized in that, It includes the following steps: Loosen the bolt (3) to unlock the first and second locking structures; Rotate the bushing (1) to lock the first locking structure and the second locking structure, so that the bushing (1) is locked into the mounting hole (21) of the lug (2) at different angles.

9. The adjustment method as described in claim 8, wherein the first locking structure includes a positioning pin (4) and a plurality of positioning holes (12) spaced circumferentially along the bushing (1), and the second locking structure includes a notch (22) formed in the inner wall of the mounting hole (21), characterized in that, The rotating bushing (1) locks the first locking structure and the second locking structure, so that the bushing (1) is locked into the mounting hole (21) of the lug (2) at different angles, including the following steps: Rotate the bushing (1), insert one end of the positioning pin (4) into the positioning hole (12) corresponding to the set angle, and insert the other end into the notch (22), and lock the bushing (1) into the mounting hole (21) at another angle.

10. The adjustment method as described in claim 8, characterized in that, Prior to the rotating bushing (1), the following is also included: The axle adjustment amount is determined based on the eccentricity and bushing rotation angle.

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