CN220430284U - Sub vehicle frame assembly and vehicle - Google Patents

Abstract

The utility model discloses a subframe assembly and a vehicle, wherein the subframe assembly comprises: a subframe rail, the subframe rail comprising: the beam outer plate and the beam inner plate are mutually buckled and jointly enclose a first cavity; the sub vehicle frame longeron, the sub vehicle frame longeron sets up the sub vehicle frame crossbeam is along the both sides that left and right sides are opposite, the sub vehicle frame longeron includes: the longitudinal beam upper plate and the longitudinal beam lower plate are arranged at intervals along the up-down direction, and the longitudinal beam upper plate and the longitudinal beam lower plate are mutually buckled and jointly enclose a second cavity. The rigidity of the X-direction and Y-direction structures of the auxiliary frame assembly can be effectively ensured, the overall strength and rigidity are improved, and the overall weight is greatly reduced.

Description

Sub vehicle frame assembly and vehicle

Technical Field

The utility model relates to the technical field of automobiles, in particular to a subframe assembly and a vehicle.

Background

The auxiliary frame is used as a base body for mounting the chassis, provides mounting points with enough strength and rigidity for power assembly, steering, suspension systems and the like, and filters and damps vibration transmitted to a vehicle body by the ground.

The design of the prior auxiliary frame of the automobile tends to be biased to the large structure, and most of auxiliary frames are made of thicker sheet metal parts by common stamping, bending, welding and other processes so as to ensure the rigidity of the auxiliary frame sufficiently, thereby increasing the weight of the automobile body; in addition, because of the welding process, the self structure of the sheet metal part and the overlarge stress of the lap welding part of the local part, the auxiliary frame X, Y is insufficient in structural rigidity and extremely easy to crack, and meanwhile, the defects of low plate utilization rate, large whole stress of parts, heavy whole weight, overhigh purchasing cost of the parts and the like are also overcome.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the auxiliary frame assembly, which can effectively ensure the rigidity of the auxiliary frame assembly in the X direction and the Y direction, improve the overall strength and rigidity, greatly reduce the overall weight and enable the auxiliary frame assembly to bear the force and moment in the running process of the vehicle.

The utility model further proposes a vehicle.

An embodiment of a subframe assembly according to a first aspect of the present utility model comprises: a subframe rail, the subframe rail comprising: the beam outer plate and the beam inner plate are mutually buckled and jointly enclose a first cavity; the sub vehicle frame longeron, the sub vehicle frame longeron sets up the sub vehicle frame crossbeam is along the both sides that left and right sides are opposite, the sub vehicle frame longeron includes: the longitudinal beam upper plate and the longitudinal beam lower plate are arranged at intervals along the up-down direction, and the longitudinal beam upper plate and the longitudinal beam lower plate are mutually buckled and jointly enclose a second cavity.

According to the auxiliary frame assembly provided by the embodiment of the utility model, the upper longitudinal beam plate and the lower longitudinal beam plate are mutually buckled in the up-down direction and jointly enclose the auxiliary frame longitudinal beam, and the outer beam plate and the inner beam plate are mutually buckled in the front-back direction and jointly enclose the auxiliary frame cross beam, so that the auxiliary frame cross beam and the auxiliary frame longitudinal beam are connected to form the auxiliary frame assembly with a frame structure, the rigidity of the X-direction structure and the Y-direction structure of the auxiliary frame assembly can be effectively ensured, the integral strength and the rigidity of the auxiliary frame assembly can be effectively improved, the integral weight of the auxiliary frame assembly is greatly reduced, the auxiliary frame assembly can bear the force and the moment in the running process of a vehicle, and reliable mounting support is provided for parts such as each control arm, each stabilizer bar and the like, so that the running smoothness of the vehicle is improved.

According to some embodiments of the utility model, further comprising: the beam reinforcing plate is arranged in the first cavity and connected between the beam outer plate and the beam inner plate; and/or, further comprising: the longitudinal beam reinforcing plate is arranged in the second cavity and connected between the longitudinal beam upper plate and the longitudinal beam lower plate.

According to some embodiments of the utility model, the subframe rail comprises: the auxiliary frame comprises a first cross beam and a second cross beam, wherein the first cross beam and the second cross beam are arranged at intervals in the front-rear direction and are respectively connected between the auxiliary frame longitudinal beams on the left side and the right side, the cross beam outer plate comprises a first cross beam outer plate and a second cross beam outer plate, the cross beam inner plate comprises a first cross beam inner plate and a second cross beam inner plate, the first cross beam outer plate and the first cross beam inner plate are mutually buckled to form the first cross beam, and the second cross beam outer plate and the second cross beam inner plate are mutually buckled to form the second cross beam.

According to some embodiments of the utility model, further comprising: the first mounting bracket is arranged on one side of the auxiliary frame longitudinal beam along the up-down direction; and the first cross beam and/or the second cross beam comprises a connecting part positioned at one side of the upper and lower directions of the first cross beam and/or the second cross beam, the connecting part extends towards one side of the auxiliary frame longitudinal beam to be connected with the first mounting bracket, and the projection shape of the connecting part on the front surface of the vehicle is of a triangular structure.

According to some embodiments of the present utility model, the first and/or second beam outer plates extend to the sub-frame rail along two sides of the left-right direction, and the left-right sides of the first and/or second beam outer plates connected to the sub-frame rail are arc structures.

According to some embodiments of the utility model, further comprising: the reinforcing plate support is arranged in the first cavity and corresponds to the position of the connecting part, and is fixedly connected to the first beam inner plate or the second beam inner plate.

According to some embodiments of the utility model, the subframe cross member is provided with a through hole, which is provided through in the front-rear direction, so as to be suitable for mounting a bushing.

According to some embodiments of the utility model, further comprising: the second mounting bracket is arranged at the joint of the auxiliary frame longitudinal beam and the auxiliary frame cross beam and is positioned at one side of the auxiliary frame longitudinal beam and one side of the auxiliary frame cross beam along the up-down direction.

According to some embodiments of the utility model, the subframe rail and the subframe rail are lap joined, and an annular groove weld bead is provided at the lap joint of the subframe rail and the subframe rail.

According to an embodiment of the second aspect of the present utility model, a vehicle includes: the auxiliary frame assembly is characterized by comprising an auxiliary frame assembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective view of a first view of a subframe assembly according to an embodiment of the present utility model;

FIG. 2 is a perspective view of a second perspective of a subframe assembly according to an embodiment of the present utility model;

FIG. 3 is a top view of a subframe assembly according to an embodiment of the present utility model;

FIG. 4 is a bottom view of the subframe assembly according to an embodiment of the present utility model;

FIG. 5 is a front view of a subframe assembly according to an embodiment of the present utility model;

FIG. 6 is a rear view of a subframe assembly according to an embodiment of the present utility model;

FIG. 7 is a schematic illustration of a subframe rail with a rail outer panel removed in accordance with an embodiment of the utility model.

Reference numerals:

100. a subframe assembly;

1. a subframe cross member; 11. a beam outer plate; 12. a beam inner plate; 13. a first cross beam; 131. a first beam outer plate; 132. a first beam inner panel; 14. a second cross beam; 141. a second beam outer plate; 142. a second beam inner panel; 15. a connection part; 16. an arc-shaped structure; 17. a through hole;

2. a subframe rail; 21. a longitudinal beam upper plate; 22. a stringer lower plate; 23. a liner hole;

3. a first mounting bracket; 4. a reinforcing plate bracket; 5. and a second mounting bracket.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

A subframe assembly according to an embodiment of the present utility model is described below with reference to fig. 1-7.

The design of the prior auxiliary frame of the automobile tends to be biased to the large structure, and most of auxiliary frames are made of thicker sheet metal parts by common stamping, bending, welding and other processes so as to ensure the rigidity of the auxiliary frame sufficiently, thereby increasing the weight of the automobile body; in addition, because of the welding process, the self structure of the sheet metal part and the overlarge stress of the lap welding part of the local part, the auxiliary frame X, Y is insufficient in structural rigidity and extremely easy to crack, and meanwhile, the defects of low plate utilization rate, large whole stress of parts, heavy whole weight, overhigh purchasing cost of the parts and the like are also overcome. Therefore, the utility model provides a subframe assembly for solving the technical problems.

As shown in fig. 1-7, the subframe assembly 100 includes: a sub-frame rail 1 and a sub-frame rail 2.

Wherein, sub vehicle frame cross member 1 includes: the beam outer plate 11 and the beam inner plate 12, the beam outer plate 11 is located on the outer side of the beam inner plate 12, the beam outer plate 11 and the beam inner plate 12 are arranged at intervals along the front-back direction, and the beam outer plate 11 and the beam inner plate 12 are buckled with each other and jointly enclose a first cavity.

Specifically, the outer cross member plate 11 is located outside the inner cross member plate 12, in other words, the outer cross member plate 11 is located outside the subframe assembly 100, the inner cross member plate 12 is located inside the subframe assembly 100, and the outer cross member plate 11 and the inner cross member plate 12 are fastened to each other in the front-rear direction and together enclose the subframe cross member 1. In this way, not only can the weight of the subframe rail 1 be reduced, thereby reducing the weight of the subframe assembly 100, but also the overall rigidity and strength of the subframe rail 1 can be improved.

Further, the beam outer plate 11 and the beam inner plate 12 are -shaped structures, the beam inner plate 12 comprises an inner plate upper wall, an inner plate side wall and an inner plate lower wall, the beam outer plate 11 comprises an outer plate upper wall, an outer plate side wall and an outer plate lower wall, the inner plate upper wall is buckled with the outer plate upper wall, and the inner plate lower wall is buckled with the outer plate lower wall, so that the beam outer plate 11 and the beam inner plate 12 are buckled and connected, and a first cavity is jointly enclosed. The auxiliary frame beam 1 is changed from the connecting process to buckling welding, so that the production process of the product is simplified, the connecting strength and rigidity between the beam outer plate 11 and the beam inner plate 12 can be effectively improved, the risk of cracking is avoided, and the performance of the product is improved.

The sub-frame side members 2 are provided on opposite sides of the sub-frame cross member 1 in the left-right direction, and the sub-frame side members 2 include: the upper beam plate 21 and the lower beam plate 22 are arranged at intervals in the up-down direction, and the upper beam plate 21 and the lower beam plate 22 are mutually buckled and jointly enclose a second cavity.

Specifically, the side member upper plate 21 and the side member lower plate 22 are fastened to each other in the up-down direction and enclose the sub-frame side member 2 together, so that the weight of the sub-frame side member 2 can be reduced, and the overall rigidity and strength of the sub-frame side member 2 can be improved. Moreover, the auxiliary frame cross beam 1 is formed by combining the cross beam outer plate 11 and the cross beam inner plate 12 in a mutually buckled mode along the front-back direction and jointly encircling, the auxiliary frame cross beam 1 and the auxiliary frame longitudinal beam 2 are connected, so that the auxiliary frame assembly 100 forms a frame structure, the integral strength and rigidity of the auxiliary frame assembly 100 can be effectively improved, meanwhile, the integral weight of the auxiliary frame assembly 100 is greatly reduced, the auxiliary frame assembly 100 can bear the force and moment in the vehicle running process, and reliable mounting support is provided for various control arms, stabilizing rods and other components, so that the smoothness of vehicle running is improved.

Further, the upper beam plate 21 and the lower beam plate 22 are in a U-shaped structure, and the upper beam plate 21 and the lower beam plate 22 are fastened and connected in the up-down direction and jointly enclose a first cavity. The process is changed into buckling welding, the production process of the product is simplified, the connection strength and rigidity between the upper longitudinal beam plate 21 and the lower longitudinal beam plate 22 can be effectively improved, and the cracking risk is avoided.

Compared with the prior art, the auxiliary frame assembly 100 of the utility model has the advantages that the same performance is realized by using the least materials, the main processes of common stamping, welding and the like are adopted, the weight of the auxiliary frame assembly 100 is optimized, and the overall light weight is realized; the overall rigidity performance, the strength performance and the modal natural frequency of the optimized auxiliary frame assembly 100 are all improved, the weight reduction effect is obvious, and the aims of unchanged performance, simplified structure, improved material utilization rate and reduced purchasing cost of parts are fulfilled.

If the upper rail plate 21 and the lower rail plate 22 are fastened up and down and jointly enclose the subframe rail 2, and the outer rail plate 11 and the inner rail plate 12 are fastened up and down and jointly enclose the subframe rail 1, or the upper rail plate 21 and the lower rail plate 22 are fastened left and right and jointly enclose the subframe rail 2, and the outer rail plate 11 and the inner rail plate 12 are fastened back and forth and jointly enclose the subframe rail 1, the subframe assembly 100X-direction structure or Y-direction structure may have insufficient rigidity, and the risk of cracking is very easy to occur. The upper longitudinal beam plate 21 and the lower longitudinal beam plate 22 of the utility model are mutually buckled along the up-down direction and jointly enclose the auxiliary frame longitudinal beam 2, the outer beam plate 11 and the inner beam plate 12 are mutually buckled along the front-back direction and jointly enclose the auxiliary frame cross beam 1, so that the auxiliary frame cross beam 1 and the auxiliary frame longitudinal beam 2 are connected to form the auxiliary frame assembly 100, the rigidity of the auxiliary frame assembly 100X-direction structure and the Y-direction structure can be effectively ensured, and the anti-collision performance of the auxiliary frame assembly 100 is improved.

Therefore, the upper longitudinal beam plate 21 and the lower longitudinal beam plate 22 are buckled with each other along the up-down direction and jointly enclose the auxiliary frame longitudinal beam 2, the outer beam plate 11 and the inner beam plate 12 are buckled with each other along the front-back direction and jointly enclose the auxiliary frame cross beam 1, so that the auxiliary frame cross beam 1 and the auxiliary frame longitudinal beam 2 are connected to form the auxiliary frame assembly 100 with a frame structure, the rigidity of the auxiliary frame assembly 100X-direction structure and the rigidity of the Y-direction structure can be effectively ensured, the integral strength and the rigidity of the auxiliary frame assembly 100 can be effectively improved, the integral weight of the auxiliary frame assembly 100 is greatly reduced, the auxiliary frame assembly 100 can bear the force and the moment in the vehicle running process, and reliable mounting support is provided for parts such as control arms, stabilizing bars and the like, and the smoothness of the vehicle running is improved.

Further, the sub-frame rail 1 further includes: the beam reinforcing plate is arranged in the first cavity and is connected between the beam outer plate 11 and the beam inner plate 12; and/or, subframe rail 2 further comprises: and a girder reinforcing plate disposed in the second cavity and connected between the girder upper plate 21 and the girder lower plate 22.

That is, the beam reinforcement plate is provided in the first cavity formed between the beam outer plate 11 and the beam inner plate 12, and the beam reinforcement plate is connected to the beam outer plate 11 and the beam inner plate 12, respectively, so that the connection stability of the beam outer plate 11 and the beam inner plate 12 can be further enhanced, thereby better improving the strength of the sub-frame rail 1.

In some embodiments, the beam reinforcement plate may have a zigzag structure so as to be connected between the beam outer plate 11 and the beam inner plate 12, so that collision force can be well transferred from the beam outer plate 11 and the beam inner plate 12 to a component connected with the subframe beam 1, and the strength of the subframe beam 1 is greatly enhanced, so that the phenomenon that the subframe beam 1 is bent due to stress is solved.

Further, the sub-frame rail 1 includes: first and second cross members 13, 14, the first and second cross members 13, 14 being disposed at intervals in the front-rear direction and respectively connected between the left and right side sub-frame rails 2, the cross member outer panel 11 includes: the first and second beam outer plates 131 and 141, and the beam inner plate 12 includes: the first beam inner plate 132 and the second beam inner plate 142, the first beam outer plate 131 and the first beam inner plate 132 are fastened to each other to form the first beam 13, and the second beam outer plate 141 and the second beam inner plate 142 are fastened to each other to form the second beam 14.

Specifically, the first cross member 13 is generally used as a front cross member of the subframe assembly 100, and the second cross member 14 is used as a rear cross member of the subframe assembly 100, wherein the first cross member 13 is formed by the first cross member outer plate 131 and the first cross member inner plate 132 being engaged with each other, and the second cross member 14 is formed by the second cross member outer plate 141 and the second cross member inner plate 142 being engaged with each other.

As shown in connection with fig. 2, 4, and 6, the subframe assembly 100 further includes: the first mounting bracket 3 is arranged on one side of the auxiliary frame longitudinal beam 2 along the up-down direction; and, the first cross member 13 and/or the second cross member 14 includes a connecting portion 15 on one side thereof in the up-down direction, the connecting portion 15 extending toward one side of the sub-frame rail 2 to be connected to the first mounting bracket 3, and the connecting portion 15 having a triangular shape in projection on the front surface of the vehicle.

So set up, locate sub vehicle frame longeron 2 along one side of upper and lower direction with first installing support 3, for the load that bears that improves first installing support 3, be equipped with connecting portion 15 in one side along upper and lower direction of first crossbeam 13 or second crossbeam 14 to make connecting portion 15 extend to link to each other with first installing support 3 towards one side of sub vehicle frame longeron 2, and connecting portion 15 is triangle-shaped structure at the projection shape of vehicle front surface, utilizes triangle-shaped stable in structure's characteristics, realizes reinforcing first installing support 3 intensity and rigidity effect.

In one embodiment of the present utility model, the first mounting bracket 3 may be a rear lower control arm bracket, and in consideration of the fact that the rear lower control arm is mounted with a spring and a rear shock absorber, the rear lower control arm bracket is subjected to a larger load and requires a larger strength and rigidity, so that the lower portion of the rear cross beam (which may be referred to herein as the second cross beam 14) on which the rear lower control arm is mounted is extended and connected to the rear lower control arm bracket to form a triangle structure, thereby realizing the effect of enhancing the strength and rigidity of the rear lower control arm bracket.

Of course, the first mounting bracket 3 may be another functional bracket, and is not limited to the above-described embodiment.

The front surface of the vehicle refers to the YZ plane in the three-axis coordinate system of the vehicle, wherein the Y axis refers to the left-right direction (lateral direction) of the vehicle, and the Z axis refers to the up-down direction (vertical direction) of the vehicle.

As shown in fig. 3, the first and/or second cross member outer plates 131 and 141 extend to the sub-frame rail 2 in both sides in the left-right direction, and the left-right sides of the first and/or second cross member outer plates 131 and 141 connected to the sub-frame rail 2 are arc-shaped structures 16.

So set up, take first crossbeam planking 131 as the example, at first crossbeam planking 131 and sub vehicle frame longeron 2 hookup location, carry out arc extension design to first crossbeam planking 131, like this, increased the area of contact with sub vehicle frame longeron 2, reduced sub vehicle frame crossbeam 1 and sub vehicle frame longeron 2 overlap joint position stress, realize sub vehicle frame crossbeam 1 and sub vehicle frame longeron 2's atress balanced. The second beam outer plate 141 is the same, although the first beam inner plate 132 and/or the second beam inner plate 142 may be of an arcuate elongated design.

In addition, the subframe assembly 100 further includes: the reinforcing plate bracket 4, the reinforcing plate bracket 4 is disposed in the first cavity, and corresponds to the position of the connecting portion 15, and the reinforcing plate bracket 4 is fixedly connected to the first beam inner plate 132 or the second beam inner plate 142. Referring to fig. 7, in consideration of the performance of the whole vehicle under special/misuse conditions, the reinforcing plate bracket 4 is disposed in the first cavity formed by the sub-frame beam 1, so that the reinforcing plate bracket 4 corresponds to the position of the connecting portion 15, and thus, the connection strength of the first mounting bracket 3 can be further enhanced, and the structural strength of the sub-frame beam 1 is also enhanced. Further, the reinforcement plate bracket 4 may be welded to the first and second beam inner plates 132 and 142, thereby increasing the overlap position strength of the first and second beam inner plates 132 and 142. In addition, considering that the left side and the right side of the auxiliary frame cross beam 1 are provided with the lower swing arms, the reinforcing plate bracket 4 is arranged on one side close to the auxiliary frame cross beam 2, so that the rigidity of the installation position of the lower swing arms is increased, the vibration transmission energy excited by the tire is effectively attenuated, the purpose of reducing noise in the vehicle is achieved, and the purpose of improving riding comfort of passengers in the vehicle is achieved.

In the embodiment of the utility model, the reinforcing plate bracket 4 is welded at the lower end of the second beam inner plate 142, so that the connection strength of the first mounting bracket 3 and the lap joint position strength of the first beam inner plate 132 or the second beam inner plate 142 can be enhanced, the rigidity of the rear lower swing arm mounting position can be enhanced, the transmission energy of the tire excitation vibration can be effectively attenuated, and the NVH performance of the vehicle can be improved.

As shown in fig. 2, the sub-frame rail 1 is provided with a through hole 17, and the through hole 17 is provided so as to penetrate in the front-rear direction, so as to be suitable for mounting a bush. In this embodiment, considering the installation of the motor mount, a through hole 17 is provided on the first beam 13, two through holes 17 are provided on the second beam 14, and a motor mount mounting sleeve is arranged in the through hole 17 for mounting the motor mount, and the motor mount mounting sleeve is wrapped inside the first beam 13 and the second beam 14, so that the rigidity of the motor mount installation position is improved, the motor excitation vibration transmission energy is effectively attenuated, and the purpose of reducing the noise in the vehicle is achieved.

Of course, the through-hole 17 may also be used for mounting other functional bushings, such as a retarder suspension mounting bushing.

As shown in fig. 4, the subframe assembly 100 further includes: the second mounting bracket 5, the second mounting bracket 5 sets up the junction at sub vehicle frame rail 2 and sub vehicle frame cross member 1, and the second mounting bracket 5 is located sub vehicle frame rail 2 and sub vehicle frame cross member 1 along the one side of upper and lower direction. By arranging the second mounting bracket 5 at the joint of the sub-frame rail 2 and the sub-frame rail 1 in this way, the stress at the joint of the sub-frame rail 2 and the sub-frame rail 1 can be further improved. For example, the second mounting bracket 5 may be a stabilizer bar mounting bracket that improves both the stress at the connection location of the sub-frame rail 2 and sub-frame rail 1 and the strength of the stabilizer bar mounting bracket.

In addition, the auxiliary frame longitudinal beam 2 and the auxiliary frame cross beam 1 are in lap joint, and an annular groove welding bead is arranged at the lap joint position of the auxiliary frame longitudinal beam 2 and the auxiliary frame cross beam 1. In this way, the welding bead of the annular groove welding bead is long, so that the stress of the lap joint position between the auxiliary frame longitudinal beam 2 and the auxiliary frame transverse beam 1 can be improved, and the connection firmness between the auxiliary frame longitudinal beam 2 and the auxiliary frame transverse beam 1 is improved.

Specifically, an annular groove bead may be designed on the first cross member inner plate 132 or the second cross member inner plate 142, and the bead length is increased, so that the stress at the overlapping position of the sub-frame cross member 1 and the sub-frame cross member 2 can be improved.

Further, the two ends of the auxiliary frame longitudinal beam 2 are provided with the bushing holes 23 for arranging the bushings, the bushings are connected with the vehicle body, excitation attenuation transmitted to the vehicle body can be effectively achieved, and the comfort of the whole vehicle is improved. Specifically, the left side and the right side of the auxiliary frame cross beam 1 are respectively connected with the auxiliary frame cross beam 2, and the above structural design realizes four-point bushing connection between the auxiliary frame assembly 100 and the vehicle body, and is obvious in improving the NVH performance of the whole vehicle.

The outer diameter of the bushing can be designed within the range of 85mm-95mm, namely, the large bushing mounting structure is rigidly connected with the vehicle body relative to the traditional auxiliary frame assembly 100, and the riding comfort of the whole vehicle can be obviously improved.

According to an embodiment of the second aspect of the present utility model, a vehicle includes: subframe assembly 100.

Therefore, the upper longitudinal beam plate 21 and the lower longitudinal beam plate 22 are mutually buckled in the up-down direction to form the auxiliary frame longitudinal beam 2, and the outer beam plate 11 and the inner beam plate 12 are mutually buckled in the front-back direction to form the auxiliary frame cross beam 1, so that the auxiliary frame cross beam 1 and the auxiliary frame longitudinal beam 2 are connected to form the auxiliary frame assembly 100 with a frame structure, the rigidity of the auxiliary frame assembly 100 in the X direction and the rigidity of the auxiliary frame assembly in the Y direction can be effectively ensured, the integral strength and the rigidity of the auxiliary frame assembly 100 can be effectively improved, the integral weight of the auxiliary frame assembly 100 is greatly reduced, the auxiliary frame assembly 100 can bear the force and the moment in the vehicle running process, and reliable mounting support is provided for all the control arms, the stabilizer bars and other parts, and the smoothness of the vehicle running is improved. Compared with the prior art, the auxiliary frame assembly 100 of the utility model has the advantages that the same performance is realized by using the least materials, the main processes of common stamping, welding and the like are adopted, the weight of the auxiliary frame assembly 100 is optimized, and the overall light weight is realized; the overall rigidity performance, the strength performance and the modal natural frequency of the optimized auxiliary frame assembly 100 are all improved, the weight reduction effect is obvious, and the aims of unchanged performance, simplified structure, improved material utilization rate and reduced purchasing cost of parts are fulfilled. In addition, the connection process of the auxiliary frame assembly 100 is changed into buckling welding, so that the production process of the product is simplified, the connection strength and rigidity between the auxiliary frame cross beam 1 and the auxiliary frame longitudinal beam 2 can be effectively improved, the risk of cracking is avoided, and the performance of the product is improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A subframe assembly, comprising:

a subframe rail, the subframe rail comprising: the beam outer plate and the beam inner plate are mutually buckled and jointly enclose a first cavity;

the sub vehicle frame longeron, the sub vehicle frame longeron sets up the sub vehicle frame crossbeam is along the both sides that left and right sides are opposite, the sub vehicle frame longeron includes: the longitudinal beam upper plate and the longitudinal beam lower plate are arranged at intervals along the up-down direction, and are mutually buckled and jointly enclosed into a second cavity; wherein,

the auxiliary frame longitudinal beam is in lap joint with the auxiliary frame cross beam, and an annular groove weld bead is formed at the lap joint position of the auxiliary frame longitudinal beam and the auxiliary frame cross beam.

2. The subframe assembly of claim 1, wherein said subframe rail further comprises: the beam reinforcing plate is arranged in the first cavity and connected between the beam outer plate and the beam inner plate; and/or the number of the groups of groups,

the subframe rail further includes: the longitudinal beam reinforcing plate is arranged in the second cavity and connected between the longitudinal beam upper plate and the longitudinal beam lower plate.

3. The subframe assembly of claim 1, wherein said subframe rail comprises: the auxiliary frame comprises a first cross beam and a second cross beam, wherein the first cross beam and the second cross beam are arranged at intervals in the front-rear direction and are respectively connected between the auxiliary frame longitudinal beams on the left side and the right side, the cross beam outer plate comprises a first cross beam outer plate and a second cross beam outer plate, the cross beam inner plate comprises a first cross beam inner plate and a second cross beam inner plate, the first cross beam outer plate and the first cross beam inner plate are mutually buckled to form the first cross beam, and the second cross beam outer plate and the second cross beam inner plate are mutually buckled to form the second cross beam.

4. The subframe assembly of claim 3, further comprising: the first mounting bracket is arranged on one side of the auxiliary frame longitudinal beam along the up-down direction; the method comprises the steps of,

the first cross beam and/or the second cross beam comprises a connecting part positioned at one side of the upper and lower directions of the first cross beam and/or the second cross beam, the connecting part extends towards one side of the auxiliary frame longitudinal beam to be connected with the first mounting bracket, and the projection shape of the connecting part on the front surface of the vehicle is of a triangular structure.

5. A subframe assembly according to claim 3 wherein the first and/or second cross member outer panels extend to the subframe rail to be connected on both sides in the left-right direction, and wherein the first and/or second cross member outer panels are connected to the subframe rail on both sides in an arcuate configuration.

6. The subframe assembly of claim 4, further comprising: the reinforcing plate support is arranged in the first cavity and corresponds to the position of the connecting part, and is fixedly connected to the first beam inner plate or the second beam inner plate.

7. The subframe assembly of claim 1, wherein the subframe rail is provided with a through-hole therethrough in a front-to-rear direction for receiving a bushing.

8. The subframe assembly of claim 1, further comprising: the second mounting bracket is arranged at the joint of the auxiliary frame longitudinal beam and the auxiliary frame cross beam and is positioned at one side of the auxiliary frame longitudinal beam and one side of the auxiliary frame cross beam along the up-down direction.

9. A vehicle, characterized by comprising: the subframe assembly of any one of claims 1-8.