Axle mounting base, rear-axle suspension structure, chassis assembly and vehicle

Abstract

An axle mounting base (100), a rear-axle suspension structure (200), a chassis assembly (1000) and a vehicle. The axle mounting base (100) is applied to the rear-axle suspension structure (200), the chassis assembly (1000) and the vehicle. The axle mounting base (100) comprises a mounting base body (1), wherein the mounting base body (1) is provided with a first mounting portion (11), the first mounting portion (11) being configured to be fixedly connected to a first fitting portion (21) on a side wall of a frame (2); and a second mounting portion (12) is provided on a bottom wall of the mounting base body (1), the second mounting portion (12) being configured to be fixedly connected to a second fitting portion (40) on an axle (4).

Description

Axle mounting bracket, rear axle suspension structure, chassis assembly and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202322633222.4 filed with the China Patent Office on September 26, 2023, entitled “Axle Mount, Rear Axle Suspension Structure, Chassis Assembly and Vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of vehicle suspension, and in particular to an axle mounting seat, a rear axle suspension structure, a chassis assembly, and a vehicle. Background Art

[0004] In the related art, vehicles, such as port vehicles, adopt a fully rigid connection for the rear axle suspension structure based on low-speed and low-impact working conditions. However, since port vehicles usually carry a large load, the rear axle suspension structure requires sufficient structural strength. The rear axle suspension structure usually includes an axle, a frame, and a mounting bracket connecting the axle and the frame. In order to improve the connection strength between the frame and the axle, the mounting bracket is usually constructed as a casting with an L-shaped cross-section, which is fixed to the bottom and sides of the main frame with bolts. The openings on the bottom and sides of the main frame will lead to a reduction in the structural strength of the main frame, thereby causing the overall connection of the rear axle suspension structure to be unstable, thereby reducing the impact resistance of the entire vehicle.

[0005] Summary of the Invention

[0006] An object of the present disclosure is to provide an axle mount, a rear axle suspension structure, a chassis assembly, and a vehicle, wherein the rear axle suspension structure has high strength, so as to at least partially solve the problems in the related art.

[0007] In order to achieve the above objectives, the present disclosure provides, in a first aspect, an axle mounting bracket, comprising:

[0008] A mounting seat body, the mounting seat body being formed with a first mounting portion, the first mounting portion being configured to be fixedly connected to a first mating portion of a side wall of the vehicle frame; and

[0009] The bottom wall of the mounting seat body is provided with a second mounting portion, and the second mounting portion is used to be fixedly connected to the second matching portion on the axle.

[0010] Optionally, the first mounting portion is constructed as a plurality of first mounting holes, and the fasteners pass through the first mounting holes and are connected to the first matching portion to connect the mounting seat body to the side wall of the frame; and / or the second mounting portion is constructed as a plurality of second mounting holes, and the fasteners pass through the second mounting holes and are connected to the second matching portion to connect the mounting seat body to the axle.

[0011] Optionally, the plurality of first mounting holes are at least partially arranged at intervals along the second direction and / or along the third direction.

[0012] Optionally, the mounting seat body includes a base plate and a mounting plate fixedly connected to the base plate, the mounting plate extends along a third direction, the first mounting portion is arranged on the mounting plate, and the second mounting portion is arranged on the base plate.

[0013] Optionally, the mounting plate includes a mounting surface for fitting with the vehicle frame and a reinforcing surface arranged opposite to the mounting surface in a first direction, and a first reinforcing rib is provided on the reinforcing surface.

[0014] Optionally, there are multiple first reinforcing ribs, which are spaced apart along the second direction.

[0015] Optionally, the first reinforcement rib includes side ribs and middle ribs; there are two side ribs, which are respectively arranged on the two opposite sides of the reinforcement surface in the second direction, and there is at least one middle rib, which is arranged in the middle of the reinforcement surface; at least part of the first mounting hole is formed by the countersunk hole set on the middle rib.

[0016] Optionally, the second mounting hole is configured as a waist-shaped hole.

[0017] Optionally, a locking piece is further provided on the outer periphery of the second mounting hole, the fastener comprises a bolt and a nut, and the locking piece is used to lock the nut installed in the second mounting hole.

[0018] Optionally, a positioning portion is further provided on the base plate, and the positioning portion is used to connect with a third matching portion on the axle.

[0019] Optionally, the positioning portion is configured as a positioning hole, which is configured as a waist-shaped hole and is arranged in the middle of the base plate. A positioning pin passes through the positioning hole and is connected to the third matching portion to position the axle mounting seat and the axle.

[0020] Optionally, the second reinforcing ribs are provided between the bottom plate and the mounting plate and are connected to the mounting plate and the bottom plate respectively.

[0021] Optionally, the axle mounting seat further includes a weight-reducing hole, and the weight-reducing hole is at least partially arranged on the mounting plate, the first reinforcing rib or the second reinforcing rib.

[0022] A second aspect of the present disclosure provides a rear axle suspension structure, comprising a rear axle and the above-mentioned axle mounting seat, wherein the axle mounting seat is used to fixedly connect the rear axle to a vehicle frame.

[0023] A third aspect of the present disclosure provides a chassis assembly, including a vehicle frame, a front axle suspension structure, and the above-mentioned rear axle suspension structure, wherein the front axle suspension structure is connected to the front end of the vehicle frame, and the rear axle suspension structure is connected to the rear end of the vehicle frame.

[0024] Optionally, the front axle suspension structure is a leaf spring suspension structure; or the front axle of the front axle suspension structure is connected to the frame using the above-mentioned axle mounting seat.

[0025] A fourth aspect of the present disclosure provides a vehicle comprising the above-mentioned axle mounting bracket, or the above-mentioned rear axle suspension structure, or the above-mentioned chassis assembly.

[0026] Through the above technical solution, by forming the first mounting portion and the second mounting portion on the mounting seat body, the mounting seat body is fixedly connected to the first matching portion of the frame side wall only through the first mounting portion and is fixedly connected to the corresponding axle through the second mounting portion. On the one hand, the frame and the axle can be fixedly connected by the first mounting portion and the second mounting portion on the axle mounting seat. On the other hand, the axle mounting seat is only connected to the side wall of the frame and does not need to be connected to the upper wing and / or lower wing of the frame, thereby avoiding opening holes in the upper wing and / or lower wing, improving the structural strength of the frame, thereby making the overall connection of the rear axle suspension structure stable and improving the impact resistance of the entire vehicle.

[0027] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0029] FIG1 is a schematic structural diagram of a vehicle axle mounting base provided in a first angle in an exemplary embodiment of the present disclosure.

[0030] FIG. 2 is a schematic structural diagram of a second angle of the axle mounting base provided in an exemplary embodiment of the present disclosure.

[0031] FIG3 is a schematic structural diagram of another axle mounting bracket provided in an exemplary embodiment of the present disclosure at a first angle.

[0032] FIG4 is a schematic structural diagram of a chassis assembly provided in an exemplary embodiment of the present disclosure.

[0033] FIG5 is a schematic structural diagram of a rear axle suspension structure provided in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0035] In this disclosure, unless otherwise indicated, directional terms such as "first direction" may specifically refer to the X direction shown in Figure 1, "second direction" may specifically refer to the Y direction shown in Figure 1, "third direction" may specifically refer to the Z direction shown in Figure 1, and "inside" and "outside" refer to the outlines of the corresponding components. In addition, the terms "first" and "second" used in this disclosure are intended to distinguish one element from another and do not have a sequential or significant nature. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0036] As shown in Figures 1 to 5, the first aspect of the present disclosure provides an axle mounting seat 100, which includes a mounting seat body 1, and the mounting seat body 1 is formed with a first mounting portion 11 and a second mounting portion 12. The first mounting portion 11 is used to be fixedly connected to the first matching portion 21 of the side wall of the frame 2, and the second mounting portion 12 is arranged on the bottom wall of the mounting seat body 1, and the second mounting portion 12 is used to be fixedly connected to the second matching portion 40 on the axle 4.

[0037] Through the above technical solution, by forming the first mounting portion 11 and the second mounting portion 12 on the mounting seat body 1, the mounting seat body 1 is fixedly connected to the first matching portion 21 of the side wall of the frame 2 only through the first mounting portion 11, and is fixedly connected to the corresponding axle 4 through the second mounting portion 12. In this way, on the one hand, the frame 2 and the axle 4 can be fixedly connected by the first mounting portion 11 and the second mounting portion 12 on the mounting seat body 1. On the other hand, the axle mounting seat is only connected to the side wall of the frame 2 and does not need to be connected to the upper wing and / or lower wing of the frame 2, thereby avoiding opening holes in the upper wing and / or lower wing, improving the structural strength of the frame 2, thereby making the overall connection of the rear axle suspension structure 200 stable and improving the impact resistance of the entire vehicle.

[0038] In order to facilitate the axle mounting seat 100 to fix the vehicle frame 2 and the axle 4, as shown in Figure 1, in some practicable ways, the mounting seat body 1 includes a base plate 13 and a mounting plate 14 fixedly connected to the base plate 13, the mounting plate 14 extends along the third direction, the mounting plate 14 can be arranged perpendicular to the base plate 13, the mounting plate 14 and the base plate 13 can be manufactured in an integral molding manner, and the mounting plate 14 can also be fixedly connected to the middle of the base plate 13 by welding, the first mounting portion 11 is arranged on the mounting plate 14, and the second mounting portion 12 is arranged on the base plate 13, wherein, for example, the first mounting portion 11 It can be constructed as a plurality of first mounting holes 111, and the second mounting portion 12 can be constructed as a plurality of second mounting holes 121. At this time, the first matching portion 21 can be constructed as a first matching hole corresponding one-to-one to the first mounting hole 111, and the second matching portion 40 can be constructed as a second matching hole corresponding one-to-one to the second mounting hole 121. In this way, the mounting plate 14 is fixedly connected to the frame 2 by passing the fastener 3 (for example, a bolt 31) through the corresponding first mounting hole 111 and the first matching hole, and the base plate 13 is fixedly connected to the axle 4 by passing the fastener 3 through the corresponding second mounting hole 121 and the second matching hole.

[0039] As shown in Figures 1 to 3, in some embodiments, for example, the bottom plate 13 and the mounting plate 14 are both approximately rectangular plates, the mounting plate 14 is arranged in the middle of the bottom plate 13 and the mounting plate 14 and the bottom plate 13 are integrally cast, and eight first mounting holes 111 can be provided on the mounting plate 14, wherein four first mounting holes 111 form a group and two groups of first mounting holes 111 are arranged at intervals in the third direction, and the four first mounting holes 111 in each group are arranged at intervals along the second direction, and the frame 2 is provided with the first mounting holes 111. There are eight corresponding first matching holes, so that the fasteners 3 pass through the corresponding first mounting holes 111 and the first matching holes to fix the mounting plate 14 to the frame 2; second mounting holes 121 are respectively provided at the four corners of the base plate 13, and four second matching holes corresponding to the second mounting holes 121 are provided on the axle 4. In this way, the fasteners 3 pass through the corresponding second mounting holes 121 and the second matching holes to fix the base plate 13 to the axle 4, thereby connecting the frame 2 to the axle 4 through the axle mounting seat 100.

[0040] It can be understood that the number and distribution of the above-mentioned first mounting holes 111 are schematic. In other embodiments, the first mounting holes 111 can also be of other numbers and arrangements. For example, the number of first mounting holes 111 can be four and they are arranged at intervals along the second direction. The fasteners 3 pass through the first mounting holes 111 to connect the mounting plate 14 to the frame 2; similarly, the number of four second mounting holes 121 is also schematic. In other embodiments, the number of second mounting holes 121 can also be three, six, etc.

[0041] In order to facilitate adjustment of the tolerance of the frame 2 in the second direction of the entire vehicle, in some feasible embodiments, the second mounting holes 121 are constructed as waist-shaped holes, and multiple second mounting holes 121 are arranged at intervals along the circumference of the base plate 13. In this way, by setting the waist-shaped holes, when the fasteners 3 (such as bolts) are connected to the axle 4, the position of the fasteners 3 in the waist-shaped holes can be adjusted, thereby improving the tolerance of the frame 2 in the second direction of the entire vehicle and improving the assembly accuracy.

[0042] In order to make the connection between the mounting plate 14 and the frame 2 more firmly, in some practicable ways, the mounting plate 14 includes a mounting surface 141 for fitting with the frame 2 and a reinforcing surface 142 arranged opposite to the mounting surface 141 in a first direction. The mounting surface 141 fits with the side wall of the frame 2, and the first mounting hole 111 passes through the mounting surface 141 and the reinforcing surface 142. The fastener 3 passes through the first mounting hole 111 and the first matching hole correspondingly arranged on the frame 2 to fix the mounting plate 14 to the frame 2. The setting of the first mounting hole 111 will reduce the local Regarding structural strength, in order to ensure that the mounting plate 14 has sufficient structural strength, a first reinforcing rib 143 can be provided on the reinforcing surface 142. The number of the first reinforcing ribs 143 can be multiple, and the multiple first reinforcing ribs 143 can be arranged at intervals along the second direction and the first reinforcing ribs 143 can extend along the third direction. The first reinforcing ribs 143 can be arranged to avoid the first mounting holes 111. In this way, the provision of the first reinforcing ribs 143 can improve the overall structural strength of the mounting plate 14 so that the mounting plate 14 can be more firmly connected to the frame 2 through the fasteners 3.

[0043] As shown in Figures 1 to 3, in some embodiments, there are multiple first reinforcing ribs 143, and the multiple first reinforcing ribs 143 are spaced apart along the second direction. Optionally, the first reinforcing ribs 143 may include side ribs 144 and a middle rib 145. The side ribs 144 are two and are disposed on opposite sides of the reinforcing surface 142 in the second direction. The middle rib 145 is one and is disposed in the middle of the reinforcing surface 142. The first reinforcing rib 143 is integrally formed with the mounting plate 14. Some of the first mounting holes 111 are disposed between the side ribs 144 and the middle rib 145. Some of the first mounting holes 111 are formed by countersunk holes 1451 provided in the middle rib 145. Therefore, when the fasteners 3 pass through the corresponding first mounting holes 111 to securely connect the mounting plate 14 to the vehicle frame 2, the side ribs 144 and the middle rib 145 provide sufficient structural strength to the mounting plate 14, thereby improving the stability of the secure connection between the mounting plate 14 and the vehicle frame 2.

[0044] It will be appreciated that the configuration of the first reinforcing ribs 143 as the side ribs 144 and the middle ribs 145 and the distribution of the side ribs 144 and the middle ribs 145 are schematic. In other embodiments, the first reinforcing ribs 143 may also be configured as other structures, as long as the first reinforcing ribs 143 can ensure that the mounting plate 14 has sufficient strength when the fasteners 3 securely connect the mounting plate 14 to the vehicle frame 2.

[0045] In addition, in order to improve the connection strength of the axle mounting seat, in some feasible embodiments, a second reinforcing rib 18 is provided below the reinforcing surface 142 and between the base plate 13 and the mounting plate 14, and the second reinforcing rib 18 is fixedly connected to the mounting plate 14 and the base plate 13 respectively. As shown in Figure 1, the second reinforcing rib 18 can also be constructed to include two side ribs and two middle ribs, wherein the two side ribs are respectively located on the two side edges of the mounting plate 14 in the second direction and the bottom ends of the side ribs are fixedly connected to the base plate 13, the side edges of the side ribs are fixedly connected to the mounting plate 14, and the middle rib is constructed as a right triangle, wherein one right-angled side of the middle rib is fixedly connected to the base plate 13, and the other right-angled side is fixedly connected to the mounting plate 14. In this way, the overall structural strength of the mounting seat body 1 can be improved by the provision of the second reinforcing rib 18, so that the frame 2 and the axle 4 can be stably fixedly connected through the axle mounting seat.

[0046] To facilitate positioning of the base plate 13 and the axle 4, in some embodiments, a positioning portion 17 is further provided on the base plate 13 for connecting with a third mating portion on the axle 4. For example, the positioning portion 17 can be configured as a positioning hole 170, which can also be a waist-shaped hole located in the center of the base plate 13. The third mating portion can be configured as a third mating hole. When the base plate 13 and the axle 4 need to be mounted, a positioning pin is installed in the positioning hole 170. The positioning pin is aligned with the third mating hole to position the base plate 13 and the axle 4. Then, the fastener 3 is used to locate the second mounting hole 121 at another location on the base plate 13. The fastener 3 is then passed through the corresponding second mounting hole 121 and the second mating hole to securely connect the base plate 13 to the axle 4. It is understood that in the method of positioning the base plate 13 and the axle 4, the positioning pin can also be first fixed in the second mating hole and then aligned with the positioning hole 170 in the base plate 13.

[0047] Furthermore, to reduce the weight of the axle mount 100, in some practicable embodiments, the axle mount 100 further includes a weight-reducing hole 15. The weight-reducing hole 15 is at least partially disposed on the mounting plate 14 and extends through the mounting surface 141 and the reinforcement surface 142. The weight-reducing hole 15 may also be disposed on the base plate 13 and the second reinforcement rib 18, as long as the overall strength of the axle mount 100 is met.

[0048] To facilitate assembly and disassembly of the base plate 13 and the axle 4, in some embodiments, a locking member 16 is further provided on the periphery of the second mounting hole 121. The fastener 3 includes a bolt 31 and a nut 32. The locking member 16 is used to lock the nut 32 installed in the second mounting hole 121. For example, the locking member 16 can be configured as two clamping blocks, which are used to clamp the nut 32 and restrict its rotation. When the base plate 13 and the axle 4 need to be fixedly connected via the fastener 3, the base plate 13 and the axle 4 can be assembled and disassembled by rotating the bolt 31 forward or reverse.

[0049] It is understandable that the above-mentioned embodiment in which the locking member 16 is configured as two clamping blocks is illustrative. In other embodiments, the locking member 16 may also have other structures as long as it can limit the rotation of the nut 32 .

[0050] Referring to Figures 4 and 5 , a second aspect of the present disclosure provides a rear axle suspension structure 200 comprising a rear axle 41 and an axle mounting bracket 100. The axle mounting brackets 100 are integrally cast and are two in number. The two axle mounting brackets 100 respectively securely connect the two ends of the rear axle 41 to the two crossbeams of the vehicle frame 2. Thus, the two integrally cast axle mounting brackets 100 provide a stable connection between the vehicle frame 2 and the rear axle 41. The integral casting ensures that the axle mounting brackets 100 have high structural strength, making them suitable for low-speed vehicle operation. Furthermore, the use of the integrally cast axle mounting brackets 100 avoids the need for a leaf spring suspension, simplifying the rear axle suspension structure 200 and reducing installation space. This frees up space in the rear axle area, facilitating the placement of the saddle lift cylinder and related equipment. It is understandable that the above-mentioned rear axle suspension structure 200 has all the beneficial effects of the axle mounting seat 100, which will not be described in detail here.

[0051] 4 and 5 , the third aspect of the present disclosure provides a chassis assembly 1000, comprising a vehicle frame 2, a front axle suspension structure 5, and the aforementioned rear axle suspension structure 200, wherein the front axle suspension structure 5 is connected to the front end of the vehicle frame 2, and the rear axle suspension structure 200 is connected to the rear end of the vehicle frame 2. For example, the front axle suspension structure 5 may be a leaf spring suspension structure, i.e., the leaf spring suspension structure is a flexible connection, and the leaf spring suspension structure is mainly composed of a vehicle frame, a leaf spring, a front axle, a shock absorber, etc., wherein the two ends of the shock absorber are respectively fixed to the vehicle frame 2 and the front axle 42, and a U-bolt is used to fix the leaf spring to the front axle at the center position. The leaf spring has one end near the front of the vehicle fixedly connected to the frame 2; the other end near the rear of the vehicle is movably connected to the frame via a bracket mounting plate, and both the leaf spring and the shock absorber are elastically zero. The components allow the front axle 42 and the frame 2 to have relative movement space in the vertical direction of the vehicle. A limit pad is fixed at the middle position of the leaf spring by a U-bolt. The limit pad and the buffer bracket on the frame 2 limit the extreme position of the frame 2 and the front axle 42 in the vertical direction of the vehicle. The limit pad assembly is made of rubber material and plays the role of limiting, buffering and eliminating noise. The front axle suspension structure 5 is constructed as a leaf spring suspension structure, which is a conventional setting. The specific structure is not described in detail in this disclosure. The rear suspension structure is fixedly connected to the rear axle 41 and the frame 2 through the above-mentioned axle mounting seat 100, thereby achieving a rigid connection of the rear suspension structure. Therefore, the front axle suspension structure 5 adopts a flexible connection of a leaf spring suspension structure and the rear suspension structure adopts a rigid connection, so that the vehicle can adapt to low-speed and heavy-load scenarios. In addition, in order to improve the structural strength of the frame 2, upper wing surfaces and lower wing surfaces are usually provided on the upper end surface and the lower end surface of the frame 2, respectively. It can be understood that the above-mentioned chassis assembly has all the beneficial effects of the rear suspension structure and the axle mounting seat, which will not be repeated here.

[0052] Of course, in some feasible embodiments, the implementation in which the front axle suspension structure 5 adopts a leaf spring suspension structure is schematic. In other implementations, the front axle suspension structure 5 may also adopt the front axle 42 of the front axle suspension structure 5 and the frame 2 may also adopt the above-mentioned axle mounting seat 100 to be connected, so that the front axle suspension structure 5 adopts a rigid connection.

[0053] A fourth aspect of the present disclosure further provides a vehicle, comprising the aforementioned axle mounting bracket 100, or the aforementioned rear axle suspension structure 200, or the aforementioned chassis assembly 1000. For example, the vehicle may be a port tractor, which utilizes the aforementioned chassis assembly 1000, comprising the aforementioned front axle suspension structure 5, the frame 2, and the rear suspension structure. The front axle suspension structure 5 can be rigidly or flexibly connected, while the rear suspension structure is rigidly connected to the frame 2. This allows the front axle suspension structure 5 and the rear axle suspension structure of the vehicle to have sufficient strength to accommodate low-speed, heavy-load scenarios. Furthermore, the use of the integrally cast axle mounting bracket 100 eliminates the need for a leaf spring suspension in the rear axle suspension structure 200, simplifying the rear axle suspension structure and reducing installation space. This frees up space in the rear axle area to facilitate the placement of a saddle lift cylinder and related devices.

[0054] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0056] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An axle mounting seat (100), characterized in that: include: A mounting seat body (1), the mounting seat body (1) being formed with a first mounting portion (11), the first mounting portion (11) being used for fixedly connecting with a first matching portion (21) of a side wall of a vehicle frame (2); and The bottom wall of the mounting seat body (1) is provided with a second mounting portion (12), and the second mounting portion (12) is used for fixedly connecting with a second matching portion (40) on the axle (4).

2. The axle mounting (100) according to claim 1, characterized in that: The first mounting portion (11) is configured as a plurality of first mounting holes (111), and the fastener (3) passes through the first mounting holes (111) and is connected to the first matching portion (21) to connect the mounting seat body (1) to the side wall of the vehicle frame (2); and / or The second mounting portion (12) is constructed as a plurality of second mounting holes (121), and the fastener (3) passes through the second mounting holes (121) and is connected to the second matching portion (40) to connect the mounting seat body (1) to the axle (4).

3. The axle mounting (100) according to claim 2, characterized in that: The plurality of first mounting holes (111) are at least partially arranged at intervals along the second direction and / or along the third direction.

4. The axle mounting (100) according to any one of claims 1 to 3, characterized in that: The mounting seat body (1) comprises a base plate (13) and a mounting plate (14) fixedly connected to the base plate (13); the mounting plate (14) extends along a third direction; the first mounting portion (11) is arranged on the mounting plate (14); and the second mounting portion (12) is arranged on the base plate (13).

5. The axle mounting (100) according to claim 4, characterized in that: The mounting plate (14) comprises a mounting surface (141) for fitting with the vehicle frame (2) and a reinforcing surface (142) arranged opposite to the mounting surface (141) in a first direction, wherein a first reinforcing rib (143) is provided on the reinforcing surface (142).

6. The axle mounting (100) according to claim 5, characterized in that: The first reinforcing ribs (143) are multiple and are arranged at intervals along the second direction.

7. The axle mounting (100) according to claim 5 or 6, characterized in that: The first reinforcing rib (143) comprises a side rib (144) and a middle rib (145); the number of the side ribs (144) is two and they are respectively arranged on two opposite sides of the reinforcing surface (142) in the second direction; the number of the middle rib (145) is at least one and it is arranged in the middle of the reinforcing surface (142); At least part of the first mounting hole (111) is formed by a countersunk hole (1451) provided on the middle rib (145).

8. The axle mounting (100) according to any one of claims 2 to 7, characterized in that: The second mounting hole (121) is configured as a waist-shaped hole.

9. The axle mounting (100) according to claim 8, characterized in that: A locking member (16) is also provided on the outer periphery of the second mounting hole (121); the fastener (3) comprises a bolt (31) and a nut (32); and the locking member (16) is used to lock the nut (32) installed in the second mounting hole (121).

10. The axle mounting (100) according to any one of claims 4 to 7, characterized in that: The bottom plate (13) is also provided with a positioning portion (17), and the positioning portion (17) is used to connect with a third matching portion on the axle (4).

11. The axle mounting (100) according to claim 10, characterized in that: The positioning portion (17) is configured as a positioning hole (170), the positioning hole (170) is configured as a waist-shaped hole and is arranged in the middle of the base plate (13), and a positioning pin passes through the positioning hole (170) and is connected to the third matching portion to position the axle mounting seat (100) and the axle (4).

12. The axle mounting (100) according to any one of claims 4 to 7, characterized in that: A second reinforcing rib (18) is provided between the bottom plate (13) and the mounting plate (14) and is connected to the mounting plate (14) and the bottom plate (13) respectively.

13. The axle mounting (100) according to claim 12, characterized in that: The axle mounting seat also includes a weight-reducing hole (15), and the weight-reducing hole (15) is at least partially arranged on the mounting plate (14), the first reinforcing rib (143) or the second reinforcing rib (18).

14. A rear axle suspension structure (200), characterized in that: It comprises a rear axle (41) and an axle mounting seat (100) as claimed in any one of claims 1 to 13, wherein the axle mounting seat (100) is used for fixedly connecting the rear axle (41) to a vehicle frame (2).

15. A chassis assembly (1000), characterized in that: It comprises a vehicle frame (2), a front axle suspension structure (5) and a rear axle suspension structure (200) as claimed in claim 14, wherein the front axle suspension structure is connected to the front end of the vehicle frame (2) (5), and the rear axle suspension structure (200) is connected to the rear end of the vehicle frame (2).

16. The chassis assembly (1000) according to claim 15, characterized in that: The front axle suspension structure (5) is a leaf spring suspension structure; or The front axle (42) of the front axle suspension structure (1) is connected to the frame (2) by using an axle mounting seat (100) as claimed in any one of claims 1 to 13.

17. A vehicle, characterized in that: It comprises the axle mounting seat (100) as described in any one of claims 1 to 13, or the rear axle suspension structure (200) as described in claim 14, or the chassis assembly (1000) as described in claim 15 or 16.

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