Non-driven rear axle structure

Abstract

The utility model relates to vehicle accessory technical field especially relates to a non - drive rear axle structure, include: axle pipe and two axle heads, two axle heads are installed at axle pipe both ends respectively, each axle head includes connecting piece and support seat, connecting piece is used for connecting wheel, the first support piece, second support piece and third support piece are formed on support seat, and the first support piece, second support piece and third support piece are located different plane and perpendicular to each other to form Z -shaped structure, the first support piece is connected with connecting piece, second support piece is used for bearing leaf spring, third support piece is connected with axle pipe, leaf spring seat, leaf spring seat is hung and is set below second support piece, and the installation passageway is formed between leaf spring seat and second support piece to install leaf spring, in the utility model, leaf spring is hung and is set below second support piece, effectively avoids appearing reverse bow phenomenon, improves the driving experience, prolongs the life of spare part.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a non-drive rear axle structure. Background Technology

[0002] In the field of vehicle engineering, non-drive rear leaf spring suspensions are widely used in commercial vehicles such as trucks and buses due to their simple structure, reliability, durability, and high load-bearing capacity. One of the core components of this type of suspension is the rigid rear axle, whose structural design directly affects the vehicle's ground clearance, load-bearing capacity, and driving stability.

[0003] Traditional leaf spring-type non-drive rear axles primarily employ two leaf spring arrangements: one is the "axle-on-spring" structure, where the leaf springs are mounted above the axle tube; the other is the "under-axle spring" structure, where the leaf springs are mounted below the axle tube. However, while the "axle-on-spring" structure achieves higher ground clearance, it also increases the height of the vehicle floor and cargo platform, hindering loading and unloading, particularly in logistics and transportation, increasing operational difficulty and costs. The "under-axle spring" structure, while effectively reducing the floor height, occupies space under the axle with the leaf springs and related suspension mechanisms, significantly reducing the vehicle's longitudinal approach angle and thus lowering the minimum ground clearance, impacting vehicle passability and failing to meet the requirements of complex road conditions.

[0004] To balance the requirements of ground clearance and vehicle height, an improved rigid rear axle structure is proposed, as exemplified by the prior art represented by Chinese invention patent CN119704942A. This structure features a recessed mounting section. The leaf spring is positioned below the top of the axle tube, but without extending below its lowest point. This effectively reduces the overall vehicle floor height, facilitating cargo loading and unloading.

[0005] However, this existing technical solution still suffers from the phenomenon of "reverse flexing" of the leaf spring. Specifically, in the structure of this existing technology, the middle part of the leaf spring rests on a sunken platform provided by the axle head. When the vehicle is under extreme full load conditions, the huge load forces the axle to move upward. At this time, the upward thrust acting on the middle part of the leaf spring will generate a torque that causes the middle part of the leaf spring to bend upward. When this torque exceeds the pre-arching restoring torque of the leaf spring itself, the curvature of the leaf spring will be twisted in the opposite direction, that is, the "reverse flexing" phenomenon occurs. Utility Model Content

[0006] The purpose of this invention is to provide a non-drive rear axle structure to solve the problem of leaf spring backbend risk in existing designs.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A non-drive rear axle structure includes: an axle tube and two axle ends, the two axle ends being respectively mounted at both ends of the axle tube; each axle end includes a connector and a support seat, the connector being used to connect a wheel; a first support member, a second support member, and a third support member are formed on the support seat, the first support member, the second support member, and the third support member being located in different planes and perpendicular to each other to form a Z-shaped structure; the first support member is connected to the connector; the second support member is used to support a leaf spring; the third support member is connected to the axle tube; and a leaf spring seat is suspended below the second support member, an installation channel being formed between the leaf spring seat and the second support member for installing the leaf spring.

[0008] Based on the above technical means, the leaf spring suspension in this utility model is set below the second support member, so that the leaf spring has a large arc height in the design state, ensuring a certain positive arc height when fully loaded. This effectively avoids the "reverse bow" phenomenon caused by the upward thrust of the leaf spring due to the upward movement of the axle under extreme full load conditions. It also avoids the leaf spring violently hitting the frame in the reverse bow state, which would generate huge impact and noise, improve the driving experience, and extend the service life of the components.

[0009] Meanwhile, since the leaf spring is suspended below the second support member and the support seat of the axle head of this utility model is a Z-shaped structure, the second support member can maintain a relatively equal height with the top surface of the axle tube (allowing a certain error), thereby ensuring that the lowest point of the vehicle floor (i.e., the leaf spring seat) has a suitable ground clearance. This not only meets the driving requirements of the vehicle under complex road conditions and avoids collisions with ground obstacles due to insufficient ground clearance, but also facilitates the loading and unloading of goods.

[0010] Furthermore, the leaf spring seat includes a suspension member and a base plate, the base plate being located below the second support member; the suspension member is mounted on the second support member, and the end of the suspension member extends downward to connect with the base plate; the leaf spring can be installed between the base plate and the second support member.

[0011] Based on the above technical means, during vehicle operation, when the leaf spring undergoes elastic deformation and reciprocating motion due to road impact, the suspension components and the floor plate provide stable and reliable support and constraint for the leaf spring. The suspension components can effectively guide the movement direction of the leaf spring, preventing it from deviating or abnormally deforming under complex stress conditions, and ensuring that the leaf spring always elastically expands and contracts along the predetermined trajectory.

[0012] As a crucial support component for leaf spring installation, the base plate can withstand various forces generated by the leaf spring during operation, such as pressure, tension, and torque, and evenly distribute these forces throughout the structure to avoid localized stress concentration. Simultaneously, the base plate prevents the leaf spring from direct contact with sharp objects or impurities on the vehicle's underside, thus mitigating scratches, collisions, and other damage to the leaf spring and extending its service life.

[0013] Furthermore, there are two suspension components, which are spaced apart along the length of the second support component; the leaf spring can be installed between the two suspension components.

[0014] Based on the above technical means, the two suspension components provide a stable and reliable installation position for the leaf spring, which enables the leaf spring to be subjected to loads more evenly distributed within the area defined by the two suspension components.

[0015] During vehicle operation, the leaf spring undergoes elastic deformation and reciprocating motion in response to road surface undulations. The two suspension components limit the leaf spring's vertical trajectory, preventing excessive lateral deviation or irregular swaying.

[0016] Furthermore, each of the suspension components has a U-shaped structure, and two grooves are formed on the second support component, with each of the suspension components mounted in each of the grooves.

[0017] Based on the above technical means, the U-shaped structure itself has good mechanical properties and can withstand large loads without easily deforming. When it is placed in the groove, the sidewall of the groove effectively limits and supports the suspension component, preventing the suspension component from shifting in the horizontal direction and ensuring a tight and reliable connection between the suspension component and the second support component.

[0018] Furthermore, it also includes a plurality of first fasteners, each of which is connected to the end of each of the suspension members to lock the base plate onto the suspension member.

[0019] According to the above-mentioned technical means, multiple first fasteners are connected to the ends of each suspension component, thereby firmly locking the base plate to the suspension component, avoiding relative displacement between the base plate and the suspension component due to external forces such as vibration and impact, and significantly improving the tightness and stability of the connection.

[0020] Furthermore, the first fastener is a nut, and the ends of each of the suspension members are threaded; a plurality of first through holes are formed on the base plate, and the ends of each of the suspension members can pass through each of the first through holes and be threadedly connected to each of the first fasteners.

[0021] Based on the above technical means, the threaded connection has self-locking properties, which can effectively resist the alternating load and impact force generated during the operation of the leaf spring, and prevent loosening or slippage between the base plate and the suspension component.

[0022] Furthermore, a limiting member is formed on the second support member, and a second through hole is formed on the limiting member. The end of the suspension member extends downward through the second through hole to connect with the base plate.

[0023] Based on the above technical means, the limiting component plays a precise positioning and constraint role for the suspension component, preventing unnecessary displacement in the horizontal direction and effectively reducing swaying and displacement caused by vibration, impact and other factors during operation.

[0024] Furthermore, it also includes a second fastener, a third through hole formed on the second support member, a fourth through hole formed on the base plate, and a fifth through hole formed on the leaf spring. The third, fourth, and fifth through holes are positioned correspondingly, and the second fastener can pass through the third, fourth, and fifth through holes to fix the leaf spring between the base plate and the second support member.

[0025] According to the above technical means, by setting a second fastener and aligning the positions of the third, fourth and fifth through holes, the second fastener can accurately pass through these three through holes, firmly fixing the leaf spring between the base plate and the second support member, so that the force borne by the leaf spring can be effectively transferred to the base plate and the second support member through the second fastener.

[0026] Furthermore, it also includes reinforcing ribs, which are disposed between the first support member and the second support member.

[0027] Based on the above technical means, the reinforcing rib is set between the first support and the second support, which greatly improves the rigidity of the connection between the two.

[0028] Furthermore, a buffer block contact surface is also formed on the second support member, which is used to abut against the vehicle buffer block.

[0029] Based on the aforementioned technical means, the contact surface of the buffer block provides a clear and stable abutment position for the vehicle's buffer block. When the vehicle encounters bumps, collisions, or other impacts, the buffer block can precisely interact with this contact surface.

[0030] The beneficial effects achieved by this utility model are: In this utility model, the leaf spring suspension is located below the second support member, which allows the leaf spring to have a large arc height in its design state. This ensures that it has a certain positive arc height when fully loaded, thereby effectively avoiding the "reverse bow" phenomenon caused by the upward thrust of the leaf spring due to the upward movement of the axle under extreme full-load conditions. This also avoids the leaf spring violently impacting the frame in the reverse bow state, which would generate huge impact and noise, improves the driving experience, and extends the life of the components.

[0031] Meanwhile, since the leaf spring is suspended below the second support member and the support seat of the axle head of this utility model is a Z-shaped structure, the second support member can maintain a relatively equal height with the top surface of the axle tube, thereby ensuring that the lowest point of the vehicle floor has a suitable ground clearance. This not only meets the driving requirements of the vehicle under complex road conditions and avoids collisions with ground obstacles due to insufficient ground clearance, but also facilitates the loading and unloading of goods. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is one of the schematic diagrams of the shaft head structure of this utility model; Figure 4 This is the second schematic diagram of the shaft head structure of this utility model; Figure 5 This is a schematic diagram of the base plate structure of this utility model.

[0033] Among them, 1. Shaft tube; 2. Shaft head; 21. Connecting piece; 22. Support base; 221. First support piece; 222. Second support piece; 223. Third support piece; 224. Groove; 225. Limiting piece; 226. Second through hole; 227. Third through hole; 228. Buffer block contact surface; 3. Leaf spring seat; 31. Suspension component; 32. Base plate; 321. First through hole; 322. Fourth through hole; 4. Leaf spring; 41. Fifth through hole; 5. First fastener; 6. Second fastener; 7. Reinforcing ribs; 8. Buffer block.

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0037] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0038] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] In embodiments of this application, 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 limitation, 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 that element.

[0040] The technical solution of this embodiment will be described in detail below with reference to the accompanying drawings.

[0041] like Figure 1As shown, a non-drive rear axle structure includes: an axle tube 1 and two axle heads 2, which are respectively mounted at both ends of the axle tube 1; each axle head 2 includes a connector 21 and a support 22, and the connector 21 is used to connect a wheel; as shown Figures 2-4 As shown, a first support member 221, a second support member 222, and a third support member 223 are formed on the support base 22. The first support member 221, the second support member 222, and the third support member 223 are located on different planes and are perpendicular to each other to form a Z-shaped structure. The first support member 221 is connected to the connecting member 21. The second support member 222 is used to support the leaf spring 3. The third support member 223 is connected to the shaft tube 1. The leaf spring seat 3 is suspended below the second support member 222. An installation channel is formed between the leaf spring seat 3 and the second support member 222 to install the leaf spring 4.

[0042] In this embodiment, the leaf spring 4 is suspended below the second support 222, which makes the leaf spring 4 designed to have a large arc height, ensuring a certain positive arc height when fully loaded. This effectively avoids the "reverse bow" phenomenon caused by the upward thrust of the leaf spring 4 due to the upward movement of the axle under extreme full-load conditions. It also avoids the leaf spring 4 violently impacting the frame in the reverse bow state, which would generate huge impact and noise, improve the driving experience, and extend the life of the components.

[0043] Meanwhile, since the leaf spring 4 is suspended below the second support 222, and the support seat 22 of the axle head 2 in this embodiment has a Z-shaped structure, the second support 222 can maintain a relatively equal height with the top surface of the axle tube 1 (allowing a certain error), thereby ensuring that the lowest point of the vehicle floor (i.e., the leaf spring seat 3) has a suitable ground clearance. This not only meets the driving requirements of the vehicle under complex road conditions and avoids collisions with ground obstacles due to insufficient ground clearance, but also facilitates the loading and unloading of goods.

[0044] In this embodiment, the first support member 221, the second support member 222 and the third support member 223 are integrally formed structures. They can be made of aluminum alloy profiles, which can effectively reduce the overall weight while ensuring structural strength; or they can be made of steel profiles, which have high strength and hardness and can withstand large loads and impacts.

[0045] like Figure 2 As shown, the leaf spring seat 3 includes a suspension member 31 and a base plate 32, with the base plate 32 located below the second support member 222; the suspension member 31 is mounted on the second support member 222, and the end of the suspension member 31 extends downward to connect with the base plate 32; the leaf spring 4 can be installed between the base plate 32 and the second support member 222.

[0046] During vehicle operation, when the leaf spring 4 undergoes elastic deformation and reciprocating motion due to road impact, the suspension component 31 and the base plate 32 provide stable and reliable support and constraint for the leaf spring 4. The suspension component 31 can effectively guide the movement direction of the leaf spring 4, preventing it from deviating or deforming abnormally under complex stress conditions, and ensuring that the leaf spring 4 always elastically expands and contracts along the predetermined trajectory.

[0047] As a crucial support component for the installation of the leaf spring 4, the base plate 32 can withstand various forces generated by the leaf spring 4 during operation, such as pressure, tension, and torque, and evenly distribute these forces throughout the entire structure to avoid localized stress concentration. Simultaneously, the base plate 32 prevents the leaf spring 4 from directly contacting sharp objects or impurities on the vehicle's underside, thus mitigating scratches, collisions, and other damage to the leaf spring 4 and extending its service life.

[0048] It is easy to see that the material, shape and size of the base plate 32 can be designed and selected according to actual needs, thereby adjusting the stiffness and load-bearing capacity of the entire leaf spring seat 3.

[0049] like Figure 1 and Figure 2 As shown, there are two suspension members 31, which are spaced apart along the length of the second support member 222; the leaf spring 4 can be installed between the two suspension members 31.

[0050] The two suspension members 31 provide a stable and reliable mounting position for the leaf spring 4, enabling the leaf spring 4 to be subjected to a more even distribution of force within the area defined by the two suspension members 31 when bearing a load.

[0051] During vehicle operation, the leaf spring 4 undergoes elastic deformation and reciprocating motion in response to road surface undulations. The two suspension components 31 can limit the vertical movement trajectory of the leaf spring 4, preventing excessive lateral offset or irregular swaying.

[0052] like Figure 2 As shown, each suspension member 31 has a U-shaped structure, and two grooves 224 are formed on the second support member 222, with each suspension member 31 mounted in each groove 224.

[0053] The U-shaped structure itself has good mechanical properties and can withstand large loads without easily deforming. When it is placed in the groove 224, the side wall of the groove 224 effectively limits and supports the suspension 31, preventing the suspension 31 from shifting in the horizontal direction and ensuring a tight and reliable connection between the suspension 31 and the second support 222.

[0054] like Figure 2 As shown, it also includes a plurality of first fasteners 5, each of which is connected to the end of each suspension member 31 to lock the base plate 32 onto the suspension member 31.

[0055] Multiple first fasteners 5 are connected to the ends of each suspension member 31, thereby firmly locking the base plate 32 onto the suspension member 31, avoiding relative displacement between the base plate 32 and the suspension member 31 due to external forces such as vibration and impact, and significantly improving the tightness and stability of the connection.

[0056] like Figure 2 As shown, the first fastener 5 is a nut, and the ends of each suspension member 31 are threaded; as Figure 2 and Figure 5 As shown, a plurality of first through holes 321 are formed on the base plate 32, and the ends of each suspension member 31 can pass through each first through hole 321 and be threadedly connected to each first fastener 5.

[0057] The threaded connection has self-locking properties, which can effectively resist the alternating load and impact force generated during the operation of the leaf spring 4, and prevent loosening or slippage between the base plate 32 and the suspension component 31.

[0058] Preferably, from a cost control perspective, existing U-bolts can be directly used as leaf spring seats 3, which can significantly simplify the production process. For example, on an automotive assembly line, assembly personnel can directly install U-bolts that meet the specifications into the corresponding positions, greatly shortening the production cycle.

[0059] like Figures 2-4 As shown, a limiting member 225 is also formed on the second support member 222, and a second through hole 226 is formed on the limiting member 225. The end of the suspension member 31 extends downward through the second through hole 226 to connect with the base plate 32.

[0060] The limiting component 225 provides precise positioning and constraint for the suspension component 31, preventing unnecessary displacement in the horizontal direction and effectively reducing swaying and displacement caused by vibration, impact and other factors during operation.

[0061] In this embodiment, the limiting member 225 is a flange structure provided on both sides of the second support member 222. The limiting member 225 can form a complete whole with the main body of the second support member 222, thereby improving the stability and reliability of the entire structure.

[0062] like Figure 2 As shown, it also includes a second fastener 6, and a third through hole 227 is formed on the second support member 222, as shown. Figure 2 and Figure 5As shown, a fourth through hole 322 is formed on the base plate 32, and a fifth through hole 41 is formed on the leaf spring 4. The third through hole 227, the fourth through hole 322 and the fifth through hole 41 are positioned correspondingly. The second fastener 6 can pass through the third through hole 227, the fourth through hole 322 and the fifth through hole 41 to fix the leaf spring 4 between the base plate 32 and the second support member 222.

[0063] By setting the second fastener 6 and aligning the third through hole 227, the fourth through hole 322 and the fifth through hole 41, the second fastener 6 can precisely pass through these three through holes, firmly fixing the leaf spring 4 between the base plate 32 and the second support member 222, so that the force borne by the leaf spring 4 can be effectively transmitted to the base plate 32 and the second support member 222 through the second fastener 6.

[0064] like Figure 3 As shown, it also includes a reinforcing rib 7, which is disposed between the first support member 221 and the second support member 222.

[0065] The reinforcing rib 7 is placed between the first support member 221 and the second support member 222, which greatly improves the rigidity of the connection between the two.

[0066] Specifically, the reinforcing rib 7 has a triangular structure, and the two sides of the reinforcing rib 7 are fixedly connected to the first support member 221 and the second support member 222 respectively, so as to prevent the axle head 2 from breaking at the connection between the first support member 221 and the second support member 222 under the action of the weight of the leaf spring 4 and the wheel connected to the connecting member 21.

[0067] It should be noted that in this embodiment, the connection between the second support member 222 and the third support member 223 is smoothly transitioned to form an arc-shaped connection structure, which effectively resists external impact.

[0068] like Figure 2 and Figure 3 As shown, a buffer block contact surface 228 is also formed on the second support member 222, which is used to abut against the vehicle buffer block 8.

[0069] The buffer block contact surface 228 provides a clear and stable abutment position for the vehicle buffer block 8. When the vehicle encounters bumps, collisions, or other impacts, the buffer block can precisely interact with the buffer block contact surface 228.

[0070] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A non-drive rear axle structure, characterized in that, include: A shaft tube (1) and two shaft ends (2), the two shaft ends (2) being respectively installed at both ends of the shaft tube (1); Each of the axle heads (2) includes a connector (21) and a support (22), the connector (21) being used to connect a wheel; The support base (22) has a first support member (221), a second support member (222), and a third support member (223). The first support member (221), the second support member (222), and the third support member (223) are located on different planes and are perpendicular to each other to form a Z-shaped structure. The first support member (221) is connected to the connecting member (21). The second support member (222) is used to support the leaf spring (4). The third support member (223) is connected to the shaft tube (1). Leaf spring seat (3), which is suspended below the second support member (222), and an installation channel is formed between the leaf spring seat (3) and the second support member (222) for installing leaf spring (4).

2. The non-drive rear axle structure according to claim 1, characterized in that, The leaf spring seat (3) includes a suspension member (31) and a base plate (32), the base plate (32) being located below the second support member (222); the suspension member (31) is mounted on the second support member (222), and the end of the suspension member (31) extends downward to connect with the base plate (32); the leaf spring (4) can be mounted between the base plate (32) and the second support member (222).

3. The non-drive rear axle structure according to claim 2, characterized in that, The number of the suspension members (31) is two, and the two suspension members (31) are distributed at intervals along the length direction of the second support member (222); the leaf spring (4) can be installed between the two suspension members (31).

4. The non-drive rear axle structure according to claim 3, characterized in that, Each of the suspension members (31) has a U-shaped structure, and two grooves (224) are formed on the second support member (222), and each of the suspension members (31) is mounted in each of the grooves (224).

5. A non-drive rear axle structure according to claim 4, characterized in that, It also includes a plurality of first fasteners (5), each of the first fasteners (5) being connected to the end of each of the suspension members (31) to lock the base plate (32) onto the suspension member (31).

6. A non-drive rear axle structure according to claim 5, characterized in that, The first fastener (5) is a nut, and the ends of each of the suspension members (31) are threaded; a plurality of first through holes (321) are formed on the base plate (32), and the ends of each of the suspension members (31) can pass through each of the first through holes (321) and be threadedly connected to each of the first fasteners (5).

7. A non-drive rear axle structure according to claim 6, characterized in that, A limiting member (225) is also formed on the second support member (222), and a second through hole (226) is formed on the limiting member (225). The end of the suspension member (31) extends downward through the second through hole (226) to connect with the base plate (32).

8. A non-drive rear axle structure according to claim 6, characterized in that, It also includes a second fastener (6), a third through hole (227) is formed on the second support member (222), a fourth through hole (322) is formed on the base plate (32), and a fifth through hole (41) is formed on the leaf spring (4). The third through hole (227), the fourth through hole (322) and the fifth through hole (41) are positioned correspondingly. The second fastener (6) can pass through the third through hole (227), the fourth through hole (322) and the fifth through hole (41) to fix the leaf spring (4) between the base plate (32) and the second support member (222).

9. A non-drive rear axle structure according to claim 1, characterized in that, It also includes a reinforcing rib (7), which is disposed between the first support member (221) and the second support member (222).

10. A non-drive rear axle structure according to claim 1, characterized in that, The second support member (222) also has a buffer block contact surface (228) formed thereon, which is used to abut against the vehicle buffer block (8).

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