Limiting assembly, drive axle and vehicle

Abstract

The application provides a limiting assembly, a drive axle and a vehicle, and relates to the field of vehicles. The limiting assembly is installed on the outer wall of the axle housing assembly of the drive axle and is opposite to the limiting block on the vehicle frame, and comprises a support and a buffer. The support comprises a support plate and at least two connecting plates. The buffer is installed on the top wall of the support plate, and the surface of the buffer away from the support plate is a plane. The connecting plates are connected at an angle with the side walls of the support plate and extend to the side of the support plate away from the buffer. A hollow region is formed between the support plate and the connecting plates. The connecting plates are used to connect with the outer wall of the axle housing assembly. The limiting assembly provided by the application solves the technical problems that the limiting block has the possibility of failure and is easy to be worn out in the prior art.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more specifically, to a limiting component, a drive axle, and a vehicle. Background Technology

[0002] In a vehicle, the frame is the basic framework of the entire vehicle; the drive axle is flexibly mounted on the frame through the suspension system and is connected to the wheels, allowing the drive axle and wheels to move up and down relative to the frame. In the prior art, the frame is fixed with a rubber limiting block, and the limiting block is directly below the axle housing of the drive axle.

[0003] Under normal circumstances, when the suspension system is compressed, causing the clearance between the chassis and the drive axle to decrease to its limit, the limiting block on the chassis will directly impact the axle housing of the drive axle. The limiting block cushions the impact through its own deformation and transmits the impact force to the chassis for load bearing, thereby protecting the suspension system.

[0004] Since the maximum stroke between the end face of the limiting block and the surface of the axle housing is fixed, there is a problem that the limiting block cannot impact the axle housing at its maximum stroke. When the vehicle is subjected to vertical impacts, there is nowhere to bear the pressure, which may cause other parts of the vehicle to malfunction. In addition, since the limiting block is made of rubber, repeated direct impacts on the axle housing will cause wear on the limiting block. Utility Model Content

[0005] The purpose of this application is to provide a limiting component, a drive axle, and a vehicle to alleviate the technical problems of the limiting block in the prior art, such as the possibility of failure and easy wear.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: In the first aspect, the limiting component provided by this utility model is installed on the outer wall of the axle housing assembly in the drive axle and is opposite to the limiting block on the vehicle frame, including a bracket and a buffer component; The bracket includes a support plate and at least two connecting plates. The buffer is installed on the top wall of the support plate, and the surface of the buffer facing away from the support plate is flat. The multiple connecting plates are connected to the sidewall of the support plate at an angle, and all extend towards the side of the support plate away from the buffer; a hollow area is formed between the support plate and the multiple connecting plates; The connecting plate is used to connect to the outer wall of the axle housing assembly.

[0007] Furthermore, the plurality of connecting plates include a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are respectively connected at an angle to two sidewalls of the support plate distributed along the length direction of the bridge housing assembly.

[0008] Furthermore, the first connecting plate and the supporting plate are connected by a first arc-shaped transition plate, the cross-section of which is an arc shape that is concave away from the center of the hollow region; And / or, the second connecting plate is connected to the support plate by a second arc-shaped transition plate, the cross section of which is an arc shape that is concave away from the center of the hollow region.

[0009] Furthermore, along the length of the bridge housing assembly, the length of the buffer is less than the length of the support plate.

[0010] Furthermore, all the connecting plates are perpendicularly connected to the support plate.

[0011] Furthermore, the connecting plate is welded to the outer wall of the bridge housing assembly.

[0012] Furthermore, the bottom wall of the connecting plate is an inclined surface adapted to the outer wall of the bridge housing assembly.

[0013] Furthermore, the connecting plate includes a first connecting portion and a second connecting portion. One side of the first connecting portion is connected to the support plate, and the other side is connected to the second connecting portion at an angle. The second connecting portion is used to weld to the outer wall of the bridge housing assembly.

[0014] Furthermore, the buffer element is vulcanized and connected to the support plate.

[0015] Secondly, the drive axle provided by this utility model includes an axle housing assembly and a limiting component as described in any of the above claims; The multiple connecting plates in the limiting assembly are welded to the outer wall of the bridge housing assembly.

[0016] Furthermore, the axle housing assembly is equipped with two of the aforementioned limiting components, which are spaced apart along the length of the axle housing assembly.

[0017] Thirdly, the vehicle provided by this utility model includes a suspension, a frame, and a drive axle as described above; The vehicle frame and the axle housing assembly in the drive axle are flexibly connected by the suspension, and the vehicle frame is equipped with a limit block, which is disposed opposite to the buffer component on the axle housing assembly.

[0018] Based on the above technical solutions, the technical effects achievable by this utility model can be analyzed as follows: In one aspect, the limiting component provided by this utility model is installed on the outer wall of the axle housing assembly in the drive axle and is opposite to the limiting block on the vehicle frame. It includes a bracket and a buffer. The bracket includes a support plate and at least two connecting plates. The buffer is installed on the top wall of the support plate, and the buffer is planar away from the surface of the support plate. Multiple connecting plates are connected at an angle to the side walls of the support plate and all extend towards the side of the support plate away from the buffer. A hollow area is formed between the support plate and the multiple connecting plates. The connecting plates are used to connect to the outer wall of the axle housing assembly. The limiting component includes a bracket and a buffer. The bracket is used to install on the axle housing assembly and supports the buffer. The bracket ensures that the limiting block installed on the vehicle frame impacts the axle housing assembly. The buffer effectively reduces abnormal wear of the limiting block. The bracket includes multiple connecting plates, and the multiple connecting plates and the support plate form a hollow area, reducing the weight of the bracket and preventing an increase in the weight of the drive axle. This limiting component can reduce the impact on the axle housing assembly, increase reliability, and solve reliability risk issues. Since the limiting blocks installed on the frame are molded parts, some limiting blocks require new molds to impact the axle housing assembly. After installing this limiting component on the axle housing assembly, the need to change the limiting blocks can be reduced, thereby effectively reducing the number of molds for the limiting blocks and avoiding multiple mold openings.

[0019] Secondly, the drive axle provided by this utility model includes an axle housing assembly and a limiting assembly, wherein multiple connecting plates in the limiting assembly are welded to the outer wall of the axle housing assembly. Welding the connecting plates to the outer wall of the axle housing assembly enables the limiting assembly to be installed on the outer wall of the axle housing assembly, and the welding strengthens the connection between the two.

[0020] Thirdly, the vehicle provided by this utility model includes a suspension, a frame, and a drive axle. The frame and the axle housing assembly in the drive axle are flexibly connected through the suspension. A limit block is installed on the frame, and the limit block is disposed opposite to a buffer member on the axle housing assembly. The buffer member is disposed opposite to the limit block so that when the limit block impacts the axle housing assembly, it contacts the buffer member first, thus avoiding the problem of abnormal wear of the limit block. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the limiting component provided in the embodiments of this application; Figure 2 A schematic diagram of the bracket structure in the limiting component provided in the embodiments of this application. Figure 1 ; Figure 3 A schematic diagram of the bracket structure in the limiting component provided in the embodiments of this application. Figure 2 ; Figure 4 This is a schematic diagram of the drive bridge structure provided in an embodiment of this application; Figure 5 This is a schematic diagram of the vehicle assembly position provided in an embodiment of this application.

[0023] icon: 100 - Bracket; 110 - Support plate; 120 - Connecting plate; 121 - First connecting plate; 122 - Second connecting plate; 123 - First connecting part; 124 - Second connecting part; 125 - Inclined surface; 130 - First arc-shaped transition plate; 140 - Second arc-shaped transition plate; 200-Buffer; 300-welding line; 400-bridge housing assembly; 500 - Frame; 510 - Limiting block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Example 1 The drive axle is one of the core components of a car, connected to the vehicle body via the suspension. A drive axle generally consists of an axle housing assembly, a final drive, half-shafts, and brakes, and functions as a load-bearing, torque-transmitting, and braking axle assembly. Structurally, axle housing assemblies can be divided into integral and segmented types; currently, commercial vehicles mostly use integral structures. In terms of manufacturing process, axle housing assemblies can be divided into stamped and welded types and cast types. Stamped and welded axle housing assemblies are widely used due to their light weight and wide adaptability. Stamped and welded axle housing assemblies are made by stamping alloy steel sheets into half-shells and then welding them together. Because the maximum stroke of the limiting block is fixed, there is a problem where the limiting block cannot impact the axle housing at its maximum stroke. When the vehicle is subjected to vertical impacts, there is nowhere to bear the pressure, potentially causing malfunctions in other parts of the vehicle. Furthermore, since the limiting block is a rubber structure, impacts on the axle housing body can cause abnormal wear on the limiting block.

[0028] To address the issues of insufficient travel of the limit block (which necessitates re-molding and wastes costs) and abnormal wear of the limit block, see [link to relevant documentation]. Figure 1 This utility model embodiment provides a limiting component, which is installed on the outer wall of the axle housing assembly 400 in the drive axle and opposite to the limiting block 510 on the frame 500. The component includes a bracket 100 and a buffer 200. The bracket 100 includes a support plate 110 and at least two connecting plates 120. The buffer 200 is installed on the top wall of the support plate 110, and the surface of the buffer 200 facing away from the support plate 110 is planar. Multiple connecting plates 120 are connected at an angle to the sidewalls of the support plate 110 and all extend towards the side of the support plate 110 facing away from the buffer 200. A hollow area is formed between the support plate 110 and the multiple connecting plates 120. The connecting plates 120 are used to connect to the outer wall of the axle housing assembly 400.

[0029] Specifically, the buffer 200 is made of natural rubber (polyisoprene), which can effectively reduce the abnormal wear of the limit block 510.

[0030] The limiting component includes a bracket 100 and a buffer 200. The bracket 100 is mounted on the axle housing assembly 400 and supports the buffer 200. The bracket 100 ensures that the limiting block 510 mounted on the frame 500 impacts the axle housing assembly 400. The buffer 200 effectively reduces abnormal wear of the limiting block 510. The bracket 100 includes multiple connecting plates 120, which, together with the support plate 110, form a hollow area, reducing the weight of the bracket 100 and preventing an increase in the weight of the drive axle. This limiting component reduces the impact on the axle housing assembly 400, increases reliability, and resolves reliability risks. Since the limiting block 510 mounted on the frame 500 is a molded part, some limiting blocks 510 require new molds to impact the axle housing assembly 400. Installing this limiting component on the axle housing assembly 400 reduces the need to modify the limiting block 510, thereby effectively reducing the number of molds for the limiting block 510 and avoiding multiple mold openings.

[0031] The following is a detailed description of the structure of the limit component: In the optional embodiment of this utility model, the buffer 200 and the support plate 110 are vulcanized together.

[0032] Specifically, vulcanization bonding refers to bonding using a vulcanization process; the vulcanization process refers to the chemical reaction between raw rubber and vulcanizing agent under certain temperature and pressure, which transforms it from a linear structure into a three-dimensional network structure; it can transform plastic, sticky, and low-strength raw rubber into highly elastic, high-strength, and durable vulcanized rubber.

[0033] The buffer 200 is made of natural rubber and is connected to the support plate 110 through a vulcanization process. After vulcanization, it has the characteristics of high elasticity, high strength and high wear resistance.

[0034] In the optional solutions provided by the embodiments of this utility model, see Figure 1 The multiple connecting plates 120 include a first connecting plate 121 and a second connecting plate 122, which are respectively connected at an angle to two sidewalls of the support plate 110 distributed along the length of the bridge housing assembly 400.

[0035] Specifically, see Figure 2 and Figure 4 The first connecting plate 121 and the second connecting plate 122 are spaced apart along the length of the axle housing assembly 400 and are both connected to the support plate 110. Because the outer wall of the axle housing assembly 400 is not flat, when the bottom wall of the first connecting plate 121 is set as an inclined surface 125 that matches the outer wall of the axle housing assembly 400, the inclined surface 125 is inclined along the width direction of the first connecting plate 121. Compared to the reverse setting where the bottom wall inclined surface 125 of the first connecting plate 121 is inclined along the length direction of the first connecting plate 121, the smaller inclination angle allows the first connecting plate 121 to be stably installed on the outer wall of the axle housing assembly 400. Similarly, when the bottom wall of the second connecting plate 122 is set as an inclined surface 125 that is adapted to the outer wall of the axle housing assembly 400, the inclined surface 125 is inclined along the width direction of the second connecting plate 122. Compared with the reverse setting where the bottom wall inclined surface 125 of the second connecting plate 122 is inclined along the length direction of the second connecting plate 122, the inclination angle is smaller, so that the second connecting plate 122 can be stably installed on the outer wall of the axle housing assembly 400.

[0036] The first connecting plate 121 and the second connecting plate 122 can provide sufficient support for the support plate 110, and can reduce the weight of the limiting assembly compared to a larger number of connecting plates 120.

[0037] In the optional solutions provided by the embodiments of this utility model, see Figure 2 and Figure 4The first connecting plate 121 and the support plate 110 are connected by a first arc-shaped transition plate 130. The cross section of the first arc-shaped transition plate 130 is an arc shape that is concave in the direction away from the center of the hollow area.

[0038] Specifically, the vertical cross-section along the length of the bridge shell body, the first arc-shaped transition plate 130 has an arc shape.

[0039] The first connecting plate 121 and the support plate 110 are connected by a first arc-shaped transition plate 130 to avoid sharp corners between the first connecting plate 121 and the support plate 110, which could lead to easy breakage at the sharp corners.

[0040] In the optional solutions provided by the embodiments of this utility model, see Figure 2 and Figure 4 The second connecting plate 122 and the support plate 110 are connected by a second arc-shaped transition plate 140. The cross section of the second arc-shaped transition plate 140 is an arc shape that is concave in the direction away from the center of the hollow area.

[0041] Specifically, in the vertical section along the length of the bridge shell body, the cross-sectional shape of the second arc-shaped transition plate 140 is arc-shaped; preferably, the arc of the first arc-shaped transition plate 130 is equal to the arc of the second arc-shaped transition plate 140. Furthermore, the bracket 100 has an overall U-shaped structure, with the first connecting plate 121 and the second connecting plate 122 being two branches of the U-shaped structure, the support plate 110 being the closed end of the U-shaped structure, and the first arc-shaped transition plate 130 and the second arc-shaped transition plate 140 being the rounded corners between the closed end and the two branches in the U-shaped structure; during installation and use, the U-shaped structure is installed upside down.

[0042] The second connecting plate 122 and the support plate 110 are connected by a second arc-shaped transition plate 140 to avoid sharp corners between the second connecting plate 122 and the support plate 110, which could lead to breakage at the sharp corners.

[0043] In the optional solution provided by this utility model embodiment, along the length direction of the bridge housing assembly 400, the length of the buffer member 200 is less than the length of the support plate 110.

[0044] Specifically, the support plate 110, the first arc-shaped transition plate 130, the first connecting plate 121, the second arc-shaped transition plate 140, and the second connecting plate 122 are integrally formed.

[0045] The length of the support plate 110 is greater than the length of the buffer 200, so that the support plate 110 can stably support the buffer 200 and prevent the buffer 200 from being unsupported after being compressed and deformed.

[0046] In the optional solutions provided by this utility model embodiment, the connecting plate 120 is perpendicularly connected to the support plate 110.

[0047] Specifically, the bracket 100 is made of Q355B material, a type of low-alloy high-strength structural steel in GB / T1591-2018, and is machined.

[0048] The connecting plate 120 is perpendicular to the support plate 110 to prevent the two opposing connecting plates 120 from moving away from each other after the bracket 100 is compressed when the angle between the connecting plate 120 and the support plate 110 is greater than 90°, thus preventing the bracket 100 from becoming unstable. It also prevents the two opposing connecting plates 120 from moving closer to each other after the bracket 100 is compressed when the angle between the connecting plate 120 and the support plate 110 is less than 90°, thus preventing the bracket 100 from becoming unstable.

[0049] In the optional embodiment of this utility model, the connecting plate 120 is welded to the outer wall of the bridge housing assembly 400.

[0050] Specifically, the connecting plate 120 is fixed to the outer wall of the axle housing assembly 400 by welding, and the welding adopts the outer fillet weld process; see Figure 4 The welding line 300 is located on the side of the connecting plate 120 away from the hollow area, which ensures the connection strength between the connecting plate 120 and the bridge housing assembly 400.

[0051] The connection plate 120 is welded to the outer wall of the axle housing assembly 400 to enhance the connection strength.

[0052] In the optional embodiment of this utility model, the bottom wall of the connecting plate 120 is an inclined surface 125 adapted to the outer wall of the bridge housing assembly 400.

[0053] Specifically, see Figures 1 to 3 The bottom wall of the connecting plate 120 facing away from the support plate 110 is a machined surface. That is, the bottom wall of the connecting plate 120 is machined to make it into an inclined surface 125 that matches the outer wall of the bridge housing assembly 400.

[0054] The bottom wall of the connecting plate 120 is set as an inclined surface 125 to ensure the fitting accuracy between the connecting plate 120 and the outer wall of the bridge housing assembly 400.

[0055] In the optional solution provided by this utility model embodiment, the connecting plate 120 includes a first connecting part 123 and a second connecting part 124. One side of the first connecting part 123 is connected to the support plate 110, and the other side is connected to the second connecting part 124 at an angle. The second connecting part 124 is used to weld to the outer wall of the bridge housing assembly 400.

[0056] Specifically, see Figure 3The connecting plate 120 is generally L-shaped, including a first connecting portion 123 and a second connecting portion 124 that are vertically connected. Of the two opposing connecting plates 120, the second connecting plate 122 extends in opposite directions. It is worth noting that the first connecting portion 123 and the second connecting portion 124 are connected to form an independent connecting plate 120; the first connecting plate 121 and the second connecting plate 122 are named to distinguish them based on their different installation positions. For example, the connecting plate 120 includes a first connecting plate 121 and a second connecting plate 122 spaced apart along the length of the bridge housing assembly 400, and both the first connecting plate 121 and the second connecting plate 122 include a vertically connected first connecting portion 123 and a second connecting portion 124.

[0057] The first connecting part 123 is used to connect the support plate 110 and the second connecting part 124. The second connecting part 124 is used to increase the contact area between the connecting plate 120 and the outer wall of the bridge housing assembly 400, thereby enhancing the connection strength.

[0058] In an optional embodiment of this utility model, two limiting components are provided.

[0059] Specifically, see Figure 4 The limiting components are used in pairs. Both limiting components are installed on the axle housing assembly 400 and are respectively positioned opposite to the two limiting blocks 510 on the frame 500. Two brackets 100 with the same angle are welded to the axle housing assembly 400 according to the requirements of the whole vehicle. If the required angle of the whole vehicle is different, the brackets 100 can be adjusted to meet the requirements of the whole vehicle.

[0060] Example 2 The drive bridge provided in this embodiment includes the limiting component in Embodiment 1, and therefore also possesses all the beneficial effects of Embodiment 1, which will not be repeated here.

[0061] In the optional solutions provided by the embodiments of this utility model, see Figure 4 The drive axle includes an axle housing assembly 400; a plurality of connecting plates 120 in the limiting assembly are welded to the outer wall of the axle housing assembly 400.

[0062] Specifically, when welding the connecting plate 120 to the outer wall of the axle housing assembly 400, an outer fillet welding process is adopted, that is, the welding line between the connecting plate 120 and the axle housing assembly 400 is located on the outer side of the connecting plate 120, which ensures the connection strength between the two.

[0063] The connecting plate 120 is welded to the outer wall of the bridge housing assembly 400, so that the limiting component can be installed on the outer wall of the bridge housing assembly 400, and the connection strength between the two is strengthened by welding.

[0064] In the optional solution provided by this utility model embodiment, the axle housing assembly 400 is equipped with two limiting components, and the two limiting components are spaced apart along the length direction of the axle housing assembly 400.

[0065] Specifically, the two limiting components are respectively positioned opposite to the two limiting blocks 510. It is worth noting that the inclination angle of the bottom wall slope 125 of the connecting plate 120 of the two limiting components can be set to be the same; or, depending on the actual situation of the outer wall of the bridge housing assembly 400, the inclination angle of the bottom wall slope 125 of the connecting plate 120 of the two limiting components can be set to be different.

[0066] Example 3 The vehicle provided in this embodiment includes the drive axle described in Embodiment 2, and therefore also possesses all the beneficial effects of Embodiment 2, which will not be repeated here.

[0067] In the optional solution provided by this utility model embodiment, the vehicle includes a suspension and a frame 500; the frame 500 and the axle housing assembly 400 in the drive axle are flexibly connected by the suspension, and the frame 500 is equipped with a limiting block 510, which is disposed opposite to the buffer 200 on the axle housing assembly 400.

[0068] Specifically, the suspension and axle housing assembly 400 are connected using U-bolts.

[0069] See Figure 5 The buffer 200 is positioned opposite to the limiting block 510 so that when the limiting block 510 impacts the axle housing assembly 400, it contacts the buffer 200 first, thus avoiding abnormal wear of the limiting block 510.

[0070] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0071] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A limiting component, mounted on the outer wall of an axle housing assembly (400) in a drive axle and opposite to a limiting block (510) on a frame (500), characterized in that, include: Support (100) and buffer (200); The bracket (100) includes a support plate (110) and at least two connecting plates (120). The buffer (200) is installed on the top wall of the support plate (110), and the surface of the buffer (200) facing away from the support plate (110) is planar. The multiple connecting plates (120) are connected at an angle to the sidewall of the support plate (110), and all extend toward the side of the support plate (110) away from the buffer (200); a hollow area is formed between the support plate (110) and the multiple connecting plates (120); The connecting plate (120) is used to connect to the outer wall of the axle housing assembly (400).

2. The limiting component according to claim 1, characterized in that, The plurality of connecting plates (120) include a first connecting plate (121) and a second connecting plate (122), wherein the first connecting plate (121) and the second connecting plate (122) are respectively connected at an angle to two sidewalls of the support plate (110) distributed along the length direction of the bridge housing assembly (400).

3. The limiting component according to claim 2, characterized in that, The first connecting plate (121) and the support plate (110) are connected by a first arc-shaped transition plate (130), and the cross section of the first arc-shaped transition plate (130) is an arc shape that is concave in the direction away from the center of the hollow region. And / or, the second connecting plate (122) is connected to the support plate (110) by a second arc-shaped transition plate (140), the cross section of which is concave in the direction away from the center of the hollow region.

4. The limiting component according to claim 3, characterized in that, Along the length of the bridge housing assembly (400), the length of the buffer (200) is less than the length of the support plate (110).

5. The limiting component according to any one of claims 1-4, characterized in that, The connecting plates (120) are all vertically connected to the support plates (110).

6. The limiting component according to claim 1, characterized in that, The connecting plate (120) is welded to the outer wall of the bridge housing assembly (400).

7. The limiting component according to claim 6, characterized in that, The bottom wall of the connecting plate (120) is an inclined surface (125) adapted to the outer wall of the bridge housing assembly (400).

8. The limiting component according to claim 6, characterized in that, The connecting plate (120) includes a first connecting part (123) and a second connecting part (124). One side of the first connecting part (123) is connected to the support plate (110), and the other side is connected to the second connecting part (124) at an angle. The second connecting part (124) is used to weld to the outer wall of the bridge housing assembly (400).

9. The limiting component according to claim 1, characterized in that, The buffer (200) is vulcanized to the support plate (110).

10. A drive axle, characterized in that, Includes the bridge housing assembly (400) and the limiting component as described in any one of claims 1-9; The plurality of connecting plates (120) in the limiting assembly are welded to the outer wall of the bridge housing assembly (400).

11. The drive axle according to claim 10, characterized in that, The axle housing assembly (400) is equipped with two of the limiting components, which are spaced apart along the length of the axle housing assembly (400).

12. A vehicle, characterized in that, Includes a suspension, a frame (500), and a drive axle as described in claim 10 or 11; The vehicle frame (500) and the axle housing assembly (400) in the drive axle are flexibly connected by the suspension, and the vehicle frame (500) is equipped with a limit block (510), which is disposed opposite to the buffer (200) on the axle housing assembly (400).

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