Subframe and vehicle

Abstract

The present invention discloses a subframe and a vehicle, wherein the subframe comprises a longitudinal beam and a crossbeam, wherein the crossbeam is connected to the longitudinal beam, wherein a reducer mounting portion is arranged on the crossbeam, wherein the front and rear sides of the crossbeam are both provided with a reinforcement structure, wherein the structures of the reinforcement structures located at the front and rear sides of the crossbeam are different. Thus, by designing the subframe, the connection stiffness between the subframe and the reducer can be improved, and the excitation vibration transmission energy on the reducer and the tire can be effectively attenuated, and the vibration noise inside the vehicle can be reduced, thereby improving the reliability and durability of the reducer mounting position and the handling stability performance and improving the riding comfort of the passengers inside the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to a subframe and a vehicle. Background Art

[0002] The automobile subframe mainly bears the excitation of the reducer, tire load and motion excitation. The strength of its installation point will directly affect the transmission of the reducer and tire excitation to the body, causing the vibration and noise of the whole vehicle. At the same time, the vehicle's handling performance requires the installation point to have strong rigidity so that there is a good strength foundation when performing handling operations.

[0003] In the related technology, the existing subframe and reducer connection structure is weak. On the one hand, the rear subframe and reducer connection surface reinforcement structure is weak in shape. On the other hand, the rear subframe and reducer connection reinforcement structure has not been designed for shape reinforcement, and the strength is insufficient. The structural shape stiffness is not effectively utilized to improve the overall installation position and local stiffness. The structure is weak and easily causes noise and vibration problems in the vehicle. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a subframe that can reduce vibration and noise inside the vehicle and improve the reliability, durability and handling stability of the reducer installation position.

[0005] The present invention further provides a vehicle.

[0006] According to the first aspect of the present invention, the subframe includes: a longitudinal beam; a cross beam, the cross beam is connected to the longitudinal beam, a reducer mounting portion is provided on the cross beam, and reinforcement structures are provided on the front and rear sides of the cross beam, and the structures of the reinforcement structures located on the front and rear sides of the cross beam are different.

[0007] Therefore, by designing the subframe, the connection stiffness between the subframe and the reducer can be improved, and the excitation vibration transmission energy on the reducer and tire can be effectively attenuated, reducing the vibration noise inside the vehicle, thereby improving the reliability and durability of the reducer installation position and the handling stability performance and improving the riding comfort of the passengers in the vehicle.

[0008] In some examples of the present invention, the reinforcement structure located on the front side includes: a first reinforcement structure, the first reinforcement structure is located between the reducer mounting portion and the longitudinal beam, the first reinforcement structure is an arched protruding structure and is protruded toward the reducer mounting portion.

[0009] In some examples of the present invention, the reinforcement structure located on the rear side includes: a second reinforcement structure, the second reinforcement structure is located between the reducer mounting portion and the longitudinal beam, the second reinforcement structure is a pit structure with at least two levels and is protruding toward the longitudinal beam on the corresponding side.

[0010] In some examples of the present invention, the reinforcement structure located on the front side also includes: a third reinforcement structure, and the reinforcement structure located on the rear side also includes: a fourth reinforcement structure, and the third reinforcement structure and the fourth reinforcement structure are spaced apart on the peripheral edge of the reducer mounting part, and the third reinforcement structure and the fourth reinforcement structure are both arc-shaped pit structures, and the arc lengths and quantities of the third reinforcement structure and the fourth reinforcement structure are different.

[0011] In some examples of the present invention, there are two third reinforcement structures, and the arc length of the third reinforcement structure located above is greater than the arc length of the third reinforcement structure located below; there are three fourth reinforcement structures and their arc lengths are the same.

[0012] In some examples of the present invention, the reinforcement structure located in the middle of the front side also includes: a fifth reinforcement structure, and the reinforcement structure located in the middle of the rear side also includes: a sixth reinforcement structure and a seventh reinforcement structure, the fifth reinforcement structure and the sixth reinforcement structure are both pit structures, and the seventh reinforcement structure is a pit structure and is arranged at the lower edge of the sixth reinforcement structure.

[0013] In some examples of the present invention, a weight-reducing hole is provided in the middle of the crossbeam, and the weight-reducing hole passes through the fifth reinforcement structure and the sixth reinforcement structure.

[0014] In some examples of the present invention, the reducer mounting portion includes a first reducer mounting portion and a second reducer mounting portion spaced apart laterally, the top of the first reducer mounting portion is provided with a first arched protrusion structure protruding upward, the top of the second reducer mounting portion is provided with a second arched protrusion structure protruding upward, and the top of the crossbeam is also provided with a first pit structure recessed downward, and the first pit structure is connected between the first arched protrusion structure and the second arched protrusion structure; and / or the bottom of the first reducer mounting portion is provided with an eighth reinforcing structure protruding downward, and the bottom of the second reducer mounting portion is provided with a ninth reinforcing structure protruding downward, and at least one of the eighth reinforcing structure and the ninth reinforcing structure is curved; and / or the front side of at least one bottom of the first reducer mounting portion and the second reducer mounting portion is provided with a tenth reinforcing structure, and the rear side of at least one bottom of the first reducer mounting portion and the second reducer mounting portion is provided with an eleventh reinforcing structure, the tenth reinforcing structure and the eleventh reinforcing structure have different aspect ratios, and / or the number of the tenth reinforcing structure and the eleventh reinforcing structure is different.

[0015] In some examples of the present invention, the left end of the beam is configured to be flared with increasing width from right to left, and the right end of the beam is configured to be flared with increasing width from left to right.

[0016] A vehicle according to a second aspect of the present invention includes: the above-mentioned subframe.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a subframe according to an embodiment of the present invention;

[0020] Figure 2 is a front view of a subframe according to an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a beam according to an embodiment of the present invention;

[0022] Figure 4 is another structural schematic diagram of a beam according to an embodiment of the present invention;

[0023] Figure 5 is another structural schematic diagram of a beam according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 100. Subframe;

[0026] 10. longitudinal beam; 20. transverse beam; 201. first pit structure; 21. reducer mounting portion;

[0027] 211, first reducer mounting portion; 2111, first arched protrusion structure; 212, second reducer mounting portion;

[0028] 2121, second arched protrusion structure; 22, reinforcement structure; 221, first reinforcement structure;

[0029] 222, second reinforcement structure; 223, third reinforcement structure; 224, fourth reinforcement structure;

[0030] 225, fifth reinforcement structure; 226, sixth reinforcement structure; 227, seventh reinforcement structure;

[0031] 228, eighth reinforcement structure; 229, ninth reinforcement structure; 230, tenth reinforcement structure;

[0032] 231. Eleventh reinforcement structure; 24. Weight reduction hole. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0034] Reference below Figure 1-Figure 5 A subframe 100 according to an embodiment of the present invention is described. The subframe 100 is located in a chassis system of a vehicle, and can reduce vibration and noise in the vehicle and improve the reliability of the speed reducer installation position.

[0035] Combination Figure 1 As shown, the subframe 100 according to the first embodiment of the present invention includes a longitudinal beam 10 and a cross beam 20, the cross beam 20 is connected to the longitudinal beam 10, a reducer mounting portion 21 is arranged on the cross beam 20, and a reinforcement structure 22 is arranged on the front and rear sides of the cross beam 20, and the structures of the reinforcement structures 22 located on the front and rear sides of the cross beam 20 are different. Specifically, the reducer mounting portion 21 is arranged on the cross beam 20, and the reducer mounting portion 21 on the cross beam 20 can be installed and connected to the reducer, and different reinforcement structures 22 are arranged on the front and rear sides of the cross beam 20, so that the spatial mode of the area around the reducer mounting portion 21 on the cross beam 20 can be strengthened, thereby increasing the connection stiffness between the cross beam 20 and the reducer; and the strength of the front and rear sides of the cross beam 20 can be different, resulting in different modal frequencies on the front and rear sides of the cross beam 20, thereby realizing the frequency avoidance design of the cross beam 20, reducing the vibration noise in the vehicle, and then improving the reliability, durability and handling stability of the reducer installation position and improving the riding comfort of the passengers in the vehicle.

[0036] Therefore, by designing the subframe 100, the connection stiffness between the subframe 100 and the reducer can be improved, and the excitation vibration transmission energy on the reducer and the tire can be effectively attenuated, reducing the vibration noise inside the vehicle, thereby improving the reliability and durability of the reducer installation position and the handling stability performance and improving the riding comfort of the passengers in the vehicle.

[0037] According to some optional embodiments of the present invention, in combination Figure 1 As shown, the reinforcement structure 22 located at the front side includes a first reinforcement structure 221, which is located between the reducer mounting portion 21 and the longitudinal beam 10, and is an arched convex structure, and the first reinforcement structure 221 is convexly arranged toward the reducer mounting portion 21. Specifically, the left and right ends of the cross beam 20 are respectively provided with the first reinforcement structure 221 which is arched and convexly arranged toward the reducer mounting portion 21 on the corresponding two sides, so that the structural strength of the left and right sides of the cross beam 20 can be further strengthened, and the protection of the reducer mounting portion 21 can be further improved on the outside.

[0038] According to some optional embodiments of the present invention, in combination Figure 1 and Figure 4As shown, the reinforcement structure 22 located at the rear side includes a second reinforcement structure 222, which is located between the reducer mounting portion 21 and the longitudinal beam 10, and the second reinforcement structure 222 is a pit structure with at least two levels, and the second reinforcement structure 222 is protruded toward the longitudinal beam 10 on the corresponding side. Specifically, the second reinforcement structures 222 protruded toward the longitudinal beam 10 on the corresponding side are respectively arranged at both ends of the rear side of the cross beam 20. Such an arrangement can increase the spatial mode of the periphery of the reducer mounting portion 21, thereby further increasing the structural strength and rigidity of the reducer mounting portion 21, and thus improving the connection reliability between the cross beam 20 and the reducer. In addition, the second reinforcement structure 222 itself has at least two levels of pit structures in the direction from the back to the front, so that the structural strength and modal frequency of the front and rear parts of the place are different, thereby achieving the front and rear frequency avoidance design effect of the place, and thus reducing the vibration noise in the vehicle.

[0039] According to some optional embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown, the reinforcement structure 22 located at the front side also includes a third reinforcement structure 223, and the reinforcement structure 22 located at the rear side also includes: a fourth reinforcement structure 224, the third reinforcement structure 223 and the fourth reinforcement structure 224 are spaced apart on the peripheral edge of the reducer mounting portion 21, and the third reinforcement structure 223 and the fourth reinforcement structure 224 are both arc-shaped pit structures, and the arc length and number of the third reinforcement structure 223 and the fourth reinforcement structure 224 are different. Specifically, the arc length and number corresponding to the third reinforcement structure 223 and the fourth reinforcement structure 224 set on the peripheral edges of the front and rear sides of the reducer mounting portion 21 are different, so that the spatial mode at this location can be increased, and the strength of the front and rear sides of the beam 20 can be different, and the modal frequency can be different, thereby further increasing the local structural strength on the beam 20 and achieving a local frequency avoidance design effect.

[0040] Specifically, combined Figure 1 , Figure 3 and Figure 4As shown, there are two third reinforcing structures 223, and the arc length of the third reinforcing structure 223 located at the top is greater than the arc length of the third reinforcing structure 223 located at the bottom; there are three fourth reinforcing structures 224, and the arc lengths of the fourth reinforcing structures 224 are the same. For example, a third reinforcing structure 223 with a 1 / 4 circumference and a depth of 3 mm is designed around the upper edge of the outer periphery of the reducer mounting portion 21 on the front side of the crossbeam 20, and a third reinforcing structure 223 with a 1 / 8 circumference and a depth of 3 mm is designed on the lower edge of the outer periphery, and three fourth reinforcing structures 224 with a 1 / 8 circumference and a depth of 3 mm are designed around the upper edge of the outer periphery of the reducer mounting portion 21 on the rear side of the crossbeam 20. It is not limited to this, so that the local structural strength can be further increased, and the strength of the front and rear sides of the crossbeam 20 can be different, and the modal frequency can be different, thereby further increasing the local structural strength of the crossbeam 20 and achieving the frequency avoidance design effect of the crossbeam 20.

[0041] According to some optional embodiments of the present invention, Figure 1-Figure 5 As shown, the reinforcement structure 22 located in the middle of the front side also includes a fifth reinforcement structure 225, and the reinforcement structure 22 located in the middle of the rear side also includes a sixth reinforcement structure 226 and a seventh reinforcement structure 227. The fifth reinforcement structure 225 and the sixth reinforcement structure 226 are both pit structures, the seventh reinforcement structure 227 is a pit structure, and the seventh reinforcement structure 227 is arranged at the lower edge of the sixth reinforcement structure 226. Among them, the fifth reinforcement structure 225 and the sixth reinforcement structure 226 are pit structures arranged along the front-to-back direction in the middle of the front side of the beam 20 and the middle of the rear side of the beam 20, so that the structural strength of the middle part of the beam 20 can be increased by utilizing the large strength of the pit structure; a seventh reinforcement structure 227 opened along the front-to-back direction is arranged on the lower edge of the sixth reinforcement structure 226, so that the sixth reinforcement structure 226 and the fifth reinforcement structure 225 can be different, and different pit structures can be formed on the front and rear sides of the middle part of the beam 20. On the one hand, the spatial mode of the middle part of the beam 20 can be increased, thereby increasing the stiffness of the middle part of the beam 20, and on the other hand, the front and rear sides of the middle part of the beam 20 can form pit structures with different strengths and modal frequencies, thereby realizing the front and rear frequency avoidance design.

[0042] Specifically, combined Figure 1-Figure 5 As shown, a weight-reducing hole 24 is provided in the middle of the cross beam 20, and the weight-reducing hole 24 penetrates the fifth reinforcement structure 225 and the sixth reinforcement structure 226. Among them, along the left-right direction of the whole vehicle, the middle of the cross beam 20 is provided with the fifth reinforcement structure 225 and the sixth reinforcement structure 226 opened in the front-to-back direction, so that the weight of the cross beam 20 can be reduced, and the spatial mode of the middle of the cross beam 20 can be increased, thereby improving the structural rigidity of the middle of the cross beam 20; the middle of the cross beam 20 is provided with a weight-reducing hole 24 penetrating from front to back, so that the overall mass of the cross beam 20 can be reduced, further improving the lightweight design effect of the vehicle and reducing the vehicle cost.

[0043] According to some optional embodiments of the present invention, in combination Figure 1-Figure 3 As shown, the reducer mounting portion 21 includes a first reducer mounting portion 211 and a second reducer mounting portion 212 which are spaced apart laterally, the top of the first reducer mounting portion 211 is provided with a first arched protrusion structure 2111 protruding upward, the top of the second reducer mounting portion 212 is provided with a second arched protrusion structure 2121 protruding upward, the top of the crossbeam 20 is also provided with a first recessed pit structure 201 which is recessed downward, the first recessed pit structure 201 is connected between the first arched protrusion structure 2111 and the second arched protrusion structure 2121; and / or the bottom of the first reducer mounting portion 211 is provided with an eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding downward, the eighth reinforcement structure 228 protruding upward ... A ninth reinforcing structure 229 protruding downward is provided at the bottom of the second reducer mounting portion 212, and at least one of the eighth reinforcing structure 228 and the ninth reinforcing structure 229 is in a curved shape; and / or a tenth reinforcing structure 230 is provided at the front side of the bottom of at least one of the first reducer mounting portion 211 and the second reducer mounting portion 212, and an eleventh reinforcing structure 231 is provided at the rear side of the bottom of at least one of the first reducer mounting portion 211 and the second reducer mounting portion 212, the tenth reinforcing structure 230 and the eleventh reinforcing structure 231 have different height-to-width ratios, and / or the number of the tenth reinforcing structure 230 and the eleventh reinforcing structure 231 is different.

[0044] Furthermore, combined with Figure 1-Figure 3 As shown, the bottom of the first reducer mounting part 211 and the second reducer mounting part 212 on the left and right sides of the cross beam 20 are respectively provided with an eighth reinforcement structure 228 and a ninth reinforcement structure 229 extending downward and protruding, and the eighth reinforcement structure 228 and the ninth reinforcement structure 229 are in a curved shape, and the curve is composed of a plurality of arches. The curved structure has a larger spatial mode and force-bearing area, so that the structural strength and rigidity of the lower outer side of the first reducer mounting part 211 and the second reducer mounting part 212 on the cross beam 20 can be increased, thereby improving the protection of the first reducer mounting part 211 and the second reducer mounting part 212 on the cross beam 20. Among them, the curved shape can be an "S" shape, but is not limited thereto.

[0045] Optionally, combined Figure 1-Figure 3As shown, in the left and right directions of the vehicle, the cross beam 20 is sequentially provided with a first reducer mounting portion 211 and a second reducer mounting portion 212 which are spaced apart from each other for mounting the reducer, and the tops of the first reducer mounting portion 211 and the second reducer mounting portion 212 are respectively provided with a first arched protrusion structure 2111 and a second arched protrusion structure 2121 which protrude upward according to the contour of the reducer mounting portion 21, and the top of the cross beam 20 is also provided with a first pit structure 201 connected to the first arched protrusion structure 2111 and the second arched protrusion structure 2121. Compared with the planar structure, such a configuration can increase the spatial mode of the tops of the first reducer mounting portion 211 and the second reducer mounting portion 212, and improve the structural strength and stiffness of the weak positions at the tops of the first reducer mounting portion 211 and the second reducer mounting portion 212, thereby improving the structural strength of the connection between the sub-frame 100 and the reducer, and improving the reliability, durability and operational stability of the reducer mounting position.

[0046] Specifically, combined Figure 1 and Figure 5 As shown, the aspect ratio of the arch structure refers to the ratio of the arch's sagitta to the arch length, the sagitta being the vertical height from the arch top to the arch foot, that is, the size of the recessed portion of the arch structure, which here is the maximum size of the inward recess of the arch structure, and the arch length being the arch span size, that is, the size in the extending direction of the arch structure, the tenth reinforcing structure 230 and the eleventh reinforcing structure 231 respectively arranged on the front and rear sides of the bottom of the first reducer mounting portion 211 and the second reducer mounting portion 212 have different aspect ratios and numbers. Such an arrangement can increase the structural strength of the lower ends of the first reducer mounting portion 211 and the second reducer mounting portion 212 on the beam 20, and can also utilize the strength and modal frequency differences of the tenth reinforcing structure 230 and the eleventh reinforcing structure 231 on the front and rear sides of the lower end of the beam 20 to achieve a frequency avoidance design on the beam 20, thereby improving the structural reliability of the beam 20 and the vehicle comfort.

[0047] According to some optional embodiments of the present invention, in combination Figure 1 As shown, the left end of the cross beam 20 is configured to be expanded with increasing width from right to left, and the right end of the cross beam 20 is configured to be expanded with increasing width from left to right. Specifically, the left and right ends of the cross beam 20 are configured to be expanded with increasing width in the direction toward the longitudinal beam 10, so that the expansion structure can be used to increase the connection area and length of the cross beam 20 and the longitudinal beam 10, thereby increasing the connection strength of the cross beam 20 and the longitudinal beam 10, and further improving the reliability of the subframe 100.

[0048] Specifically, combined Figure 1As shown, the cross beam 20 is an arch structure along the X direction of the vehicle, and the first reducer mounting portion 211 and the second reducer mounting portion 212 are located at the top end of the arch. The strong strength of the arch can be used to increase its X-direction structural strength and vibration attenuation capability, thereby improving the reliability, durability and handling stability of the reducer mounting position.

[0049] The vehicle according to the second aspect of the present invention comprises: the subframe 100 of the above embodiment. The vehicle having the subframe 100 can increase the structural rigidity of its vehicle body and effectively attenuate the excitation vibration energy of the road surface, thereby improving the reliability and comfort of the vehicle.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0052] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A subframe, characterized in that: include: Stringer (10); A crossbeam (20), the crossbeam (20) being connected to the longitudinal beam (10), the crossbeam (20) being provided with a reducer mounting portion (21), the front side and the rear side of the crossbeam (20) being provided with reinforcement structures (22), the structures of the reinforcement structures (22) located at the front side and the rear side of the crossbeam (20) being different, the reinforcement structure (22) located at the front side comprising: a third reinforcement structure (223), the reinforcement structure (22) located at the rear side comprising: a fourth reinforcement structure (224), the third reinforcement structure (223) and the fourth reinforcement structure (224) being distributed at intervals on the outer peripheral edge of the reducer mounting portion (21), the third reinforcement structure (223) and the fourth reinforcement structure (224) being both arc-shaped pit structures, the arc lengths and the numbers of the third reinforcement structure (223) and the fourth reinforcement structure (224) being different.

2. The subframe according to claim 1, characterized in that: The reinforcement structure (22) located at the front side further comprises: a first reinforcement structure (221), the first reinforcement structure (221) being located between the reducer mounting portion (21) and the longitudinal beam (10), the first reinforcement structure (221) being an arched protruding structure and being arranged to protrude toward the reducer mounting portion (21).

3. The subframe according to claim 1, characterized in that: The reinforcement structure (22) located at the rear side further comprises: a second reinforcement structure (222), the second reinforcement structure (222) being located between the reducer mounting portion (21) and the longitudinal beam (10), the second reinforcement structure (222) being a concave structure with at least two levels and being protruded toward the longitudinal beam (10) on the corresponding side.

4. The subframe according to claim 1, characterized in that: There are two third reinforcement structures (223), and the arc length of the third reinforcement structure (223) located at the upper side is smaller than the arc length of the third reinforcement structure (223) located at the lower side; There are three fourth reinforcement structures (224) with the same arc length.

5. The subframe according to claim 1, characterized in that: The reinforcing structure (22) located in the middle of the front side further includes: a fifth reinforcing structure (225); the reinforcing structure (22) located in the middle of the rear side further includes: a sixth reinforcing structure (226) and a seventh reinforcing structure (227); the fifth reinforcing structure (225) and the sixth reinforcing structure (226) are both concave structures; the seventh reinforcing structure (227) is a concave structure and is arranged at the lower edge of the sixth reinforcing structure (226).

6. The subframe according to claim 5, characterized in that: A weight-reducing hole (24) is provided in the middle of the crossbeam (20), and the weight-reducing hole (24) passes through the fifth reinforcement structure (225) and the sixth reinforcement structure (226).

7. The subframe according to claim 1, characterized in that: The reducer mounting portion (21) comprises a first reducer mounting portion (211) and a second reducer mounting portion (212) which are spaced apart in a transverse direction, the top of the first reducer mounting portion (211) being provided with a first arched protrusion structure (2111) protruding upward, the top of the second reducer mounting portion (212) being provided with a second arched protrusion structure (2121) protruding upward, the top of the crossbeam (20) being further provided with a first recessed pit structure (201) recessed downward, the first recessed pit structure (201) being connected between the first arched protrusion structure (2111) and the second arched protrusion structure (2121); and / or An eighth reinforcing structure (228) protruding downwards is provided at the bottom of the first reducer mounting portion (211), and a ninth reinforcing structure (229) protruding downwards is provided at the bottom of the second reducer mounting portion (212), and at least one of the eighth reinforcing structure (228) and the ninth reinforcing structure (229) is in a curved shape; and / or A tenth reinforcing structure (230) is arranged on the front side of at least one bottom of the first reducer mounting portion (211) and the second reducer mounting portion (212), and an eleventh reinforcing structure (231) is arranged on the rear side of at least one bottom of the first reducer mounting portion (211) and the second reducer mounting portion (212), the tenth reinforcing structure (230) and the eleventh reinforcing structure (231) having different aspect ratios, and / or the tenth reinforcing structure (230) and the eleventh reinforcing structure (231) having different numbers.

8. The subframe according to claim 1, characterized in that: The left end of the crossbeam (20) is configured to be flared with increasing width in a direction from right to left, and the right end of the crossbeam (20) is configured to be flared with increasing width in a direction from left to right.

9. A vehicle, characterized in that: include: The subframe (100) according to any one of claims 1 to 8.

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