CN217227692U - Auxiliary frame and vehicle - Google Patents

Abstract

The application discloses sub vehicle frame and vehicle. The sub vehicle frame that this application embodiment provided includes first crossbeam, second crossbeam, first longeron, second longeron and reinforcing plate. The second cross beam and the first cross beam are arranged at intervals. The first longitudinal beam is connected with the first cross beam and the second cross beam. The first longitudinal beam is connected with the first cross beam and the second cross beam, and the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam are all independently molded and enclosed to form a hollow space. The reinforcing plate detachably connects the first longitudinal beam and the second longitudinal beam. So, first crossbeam the second crossbeam first longeron with the second longeron is all independently formed, has reduced the defect rate of die sinking risk and sub vehicle frame. In addition, the reinforcing plate is connected with the first longitudinal beam and the second longitudinal beam, so that the rigidity and the strength of the auxiliary frame can be improved, and the strength performance and the durability of the auxiliary frame are guaranteed.

Description

Auxiliary frame and vehicle

Technical Field

The application relates to the technical field of automobiles, in particular to an auxiliary frame and a vehicle.

Background

The automotive industry is one of the major sources of carbon emissions. Among many approaches to emission reduction technology, lightweight technology occupies a very important position. The lightweight of car except bringing the reduction of oil consumption, can also effectively promote the driving nature controlled of car. In the related art, in order to reduce the weight of the automobile, the subframe of the automobile is integrally cast and formed by using an aluminum alloy, so that the yield of the subframe is low, and the tensile strength and the yield strength are low.

SUMMERY OF THE UTILITY MODEL

The application discloses sub vehicle frame and vehicle.

The sub vehicle frame that this application embodiment provided includes first crossbeam, second crossbeam, first longeron, second longeron and reinforcing plate. The second cross beam and the first cross beam are arranged at intervals. The first longitudinal beam is connected with the first cross beam and the second cross beam. The first longitudinal beam is connected with the first cross beam and the second cross beam, and the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam are all independently molded and enclosed to form a hollow space. The reinforcing plate is detachably connected with the first longitudinal beam and the second longitudinal beam.

Therefore, the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam are all independently formed, and the die sinking risk and the defect rate of the auxiliary frame can be reduced. In addition, the reinforcing plate is connected with the first longitudinal beam and the second longitudinal beam, so that the rigidity and the strength of the auxiliary frame can be improved, and the strength performance and the durability of the auxiliary frame are guaranteed.

In some embodiments, the reinforcement panel has a plurality of connection locations with the first stringer; and/or the reinforcing plate and the second longitudinal beam are provided with a plurality of connecting positions.

In some embodiments, a stabilizing brace is removably disposed on the first stringer and/or the second stringer.

In some embodiments, a threaded bushing is inserted on the first longitudinal beam and the second longitudinal beam, the threaded bushing having a threaded bore, the threaded bushing being used to mount a steering gear.

In certain embodiments, the threaded sleeve is provided with a first stop edge, and the first and second stringers are each provided with a second stop edge that contacts the first stop edge to prevent rotation of the threaded sleeve relative to a corresponding one of the first and second stringers.

In some embodiments, the first cross beam and the second cross beam are both hollow and have hollow spaces, the subframe is provided with chip removal holes, and the hollow spaces of the first cross beam and the second cross beam are both communicated with the chip removal holes.

In some embodiments, a first end of the first cross member is inserted into the first longitudinal member and a second end of the first cross member is inserted into the second longitudinal member; the first end of the second cross beam is inserted into the first longitudinal beam, the second end of the second cross beam is inserted into the second longitudinal beam, and the chip discharge hole is formed in the joint of any two beams of the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam.

In some embodiments, the first cross beam and the second cross beam are both hollow structures and have hollow spaces, and the first cross beam and the second cross beam are provided with through holes communicated with the hollow spaces.

In certain embodiments, the subframe has an energy-absorbing location that has a strength that is less than the strength of the subframe elsewhere.

The vehicle provided by the embodiment of the application comprises the auxiliary frame in any one of the embodiments.

Additional aspects and advantages of the present application 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 present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a subframe according to an embodiment of the present disclosure;

FIG. 2 is another schematic structural view of a subframe according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of section I of the subframe of FIG. 2 according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a portion of the structure of a subframe according to an embodiment of the present application;

FIG. 5 is a schematic view of yet another embodiment of a subframe of the subject application;

FIG. 6 is a side schematic view of a subframe according to an embodiment of the present application;

fig. 7 is a schematic plan view of a vehicle according to an embodiment of the present application.

Description of the main element symbols:

the auxiliary frame 100, the hollowed space 101, the first cross beam 10, the connecting position 11, the mounting point 13, the hollow space 14, the second cross beam 20, the first longitudinal beam 30, the second limiting edge 31, the second longitudinal beam 40, the reinforcing plate 50, the stabilizing bracket 60, the threaded sleeve 70, the threaded hole 71, the first limiting edge 72, the positioning hole 73, the chip outlet hole 81, the through hole 82, the energy absorption part 90, the vehicle body 200 and the vehicle 1000.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to 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," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, a subframe 100 according to an embodiment of the present disclosure includes a first cross member 10, a second cross member 20, a first longitudinal member 30, a second longitudinal member 40, and a reinforcement plate 50. The second beam 20 is spaced apart from the first beam 10. The first longitudinal member 30 connects the first cross member 10 and the second cross member 20. The first longitudinal beam 30 is connected with the first cross beam 10 and the second cross beam 20, and the first cross beam 10, the second cross beam 20, the first longitudinal beam 30 and the second longitudinal beam 40 are all independently formed and enclosed to form a hollow space 101. The reinforcing plate 50 detachably connects the first longitudinal member 30 and the second longitudinal member 40.

Therefore, the first cross beam 10, the second cross beam 20, the first longitudinal beam 30 and the second longitudinal beam 40 are formed independently, and the die sinking risk and the defect rate of the auxiliary frame 100 can be reduced. In addition, the connection of the reinforcement plate 50 with the first longitudinal beam 30 and the second longitudinal beam 40 can improve the rigidity and strength of the subframe 100, and ensure the strength performance and durability of the subframe 100.

Specifically, the first cross member 10, the second cross member 20, the first longitudinal member 30, the second longitudinal member 40 and the reinforcement plate 50 may be made of a metal material to ensure that the subframe 100 has good strength as a whole. The first cross member 10 and the second cross member 20 can be connected to the first longitudinal member 30 and the second longitudinal member 40 by welding. The first cross member 10 and the second cross member 20 may have a cylindrical shape, a rectangular parallelepiped shape, or other irregular shapes, and the shapes of the first cross member 10 and the second cross member 20 may be the same or different, and the shapes of the first cross member 10 and the second cross member 20 are not limited herein.

The reinforcing plate 50 connects the first longitudinal member 30 and the second longitudinal member 40 to improve the rigidity and strength of the subframe 100, and ensure the strength and durability of the subframe 100. The reinforcing plate 50 may be trapezoidal, elliptical, rectangular, or irregular, but is not limited thereto. In one embodiment, when the reinforcing plate 50 is connected to the first longitudinal beam 30 and the second longitudinal beam 40, the reinforcing plate 50 is connected to the first longitudinal beam 30 and the second longitudinal beam 40 with a space therebetween along the extending direction of the first cross beam 10, so that the reinforcing plate 50 can be substantially X-shaped, and the weight of the subframe 100 can be reduced to achieve light weight.

In the embodiment of the application, the material characteristics and the forming process of the auxiliary frame 100 can be selected and adapted according to the structural characteristics and the stress conditions of different parts, so that the weight of the whole auxiliary frame 100 is reduced, and the working performance of the auxiliary frame 100 is improved. Each part on the auxiliary frame 100 can be formed independently by adopting different processes, different characteristics of each material are fully exerted, the problems that the whole casting of the auxiliary frame 100 is large in size and not easy to form are solved, the die sinking risk and the defect rate of the auxiliary frame 100 are reduced, different materials are made to exert different material characteristics, and the effects of optimizing performance, reducing weight and reducing cost are achieved.

In one embodiment, the first cross member 10 and the second cross member 20 can be extruded from a relatively low cost aluminum alloy profile, the reinforcement plate 50 can be made from a sheet metal material to enhance reinforcement, and the first longitudinal member 30 and the second longitudinal member 40, as well as the remaining complex components, can be formed from an aluminum alloy casting by low pressure casting.

Referring to fig. 1, in some embodiments, the stiffener 50 and the first stringer 30 have a plurality of attachment locations 11. In some embodiments, the reinforcement panel 50 has a plurality of connection locations 11 with the second longitudinal beam 40. In some embodiments, the reinforcement panel 50 has a plurality of attachment locations 11 with the first stringer 30 and the reinforcement panel 50 has a plurality of attachment locations 11 with the second stringer 40. Thus, the reinforcing plate 50 can improve the rigidity and strength of the subframe 100, and ensure the strength and durability of the subframe 100. The reinforcing plate 50 covers part of the hollow space 101, so that the overall stress balance of the subframe 100 is improved, and the NVH performance of the vehicle 1000 is improved.

Specifically, the reinforcement plate 50 may be connected to the first longitudinal beam 30 and/or the second longitudinal beam 40 by bolting. In one embodiment, the connecting locations 11 may be mounting holes formed in the first longitudinal beam 30 and the second longitudinal beam 40, the reinforcing plate 50 is a stamped and formed 3mm thick steel stamped sheet, two mounting holes are spaced apart in the first longitudinal beam 30, two mounting holes are spaced apart in the second longitudinal beam 40, and 4 bolts are passed through the reinforcing plate 50 and the mounting holes to fix the reinforcing plate 50 to the first longitudinal beam 30 and the second longitudinal beam 40.

Referring to fig. 1, in some embodiments, the first stringer 30 may be removably provided with a stabilizing bracket 60. In some embodiments, a stabilizing bracket 60 is removably disposed on second stringer 40. In some embodiments, a stabilizing bracket 60 is removably disposed on the first and second stringers 30, 40. Thus, the stabilizer bracket 60 reinforces the entire subframe 100, and increases the rigidity and strength of the subframe 100 to prolong the service life of the subframe 100.

In particular, the stabilizing bracket 60 may be connected to the first longitudinal beam 30 and/or the second longitudinal beam 40 by means of a bolted connection. In some embodiments, the first longitudinal beam 30 has a mounting point 13 formed thereon for connection with the stabilizer bracket 60, and the second longitudinal beam 40 has a mounting point 13 formed thereon for connection with the stabilizer bracket 60.

In one embodiment, the mounting points 13 may be mounting holes formed on the first longitudinal beam 30 and the second longitudinal beam 40, 4 mounting holes are spaced apart from each other on the first longitudinal beam 30, 4 mounting holes are spaced apart from each other on the second longitudinal beam 40, and 8 bolts may be used to pass through the stabilizing bracket 60 and the mounting holes to fix the stabilizing bracket 60 to the first longitudinal beam 30 and the second longitudinal beam 40.

It should be noted that, in some embodiments, the mounting points 13 on the first longitudinal beam 30 and the second longitudinal beam 40 may coincide with the connecting positions 11, that is, by the coinciding mounting points 13 on the first longitudinal beam 30 and the second longitudinal beam 40 and the connecting positions 11, not only the stabilizer bracket 60 and the first longitudinal beam 30 and the second longitudinal beam 40, and the support plate and the first longitudinal beam 30 and the second longitudinal beam 40, but also the stabilizer bracket 60 and the reinforcement plate 50 may be connected, so as to further improve the rigidity and strength of the subframe 100.

Referring to fig. 2, in some embodiments, a threaded bushing 70 is inserted over the first longitudinal beam 30 and the second longitudinal beam 40, the threaded bushing 70 having a threaded bore 71, the threaded bushing 70 being used to mount the steering gear. In this way, the steering gear may be detachably coupled to the subframe 100 by screwing the bolt into the screw hole 71 of the screw bushing 70. The steering gear is detachably connected to the subframe 100, so that the chassis parts of the vehicle 1000 can be conveniently mounted and dismounted during the maintenance of the vehicle 1000.

Preferably, the threaded bushing 70 may be a steel threaded bushing, so that the strength and life of the threaded bushing 70 may be increased, and additional maintenance costs for replacing the entire subframe 100 due to damage to the threaded hole 71 may be avoided. Compared with the threaded sleeve made of aluminum alloy, the tensile strength of the threaded sleeve 70 of the steel screw is improved by 50%, and the breaking torque is improved by 40%, so that the service life is prolonged.

Referring to fig. 2 and 3, in some embodiments, the threaded sleeve 70 may be provided with a first stop edge 72, and the first longitudinal beam 30 and the second longitudinal beam 40 are provided with a second stop edge 31, and the second stop edge 31 contacts the first stop edge 72 to prevent the threaded sleeve 70 from rotating relative to the corresponding one of the first longitudinal beam 30 and the second longitudinal beam 40. Thus, the problem of the sliding rotation of the threaded sleeve 70 during the mounting or dismounting of the steering gear is avoided, and the steering gear can be more firmly mounted on the subframe 100.

Specifically, the threaded bushing 70 is interference fit with the second side member 40, and the threaded bushing 70 may be press-fitted to the subframe 100 using a press-fitting machine. During press fitting, the first limiting edge 72 is aligned with the second limiting edge 31, so that the problems of misalignment, crushing of the auxiliary frame 100 and the like in the press fitting process can be effectively avoided.

In one embodiment, the threaded sleeve 70 is hollow cylindrical, the threaded sleeve 70 is trimmed in the axial direction of the threaded sleeve 70 to form a first limit edge 72, and the first stringer 30 and the second stringer 40 are formed with bosses in the axial direction of the threaded sleeve 70, the bosses including the second limit edge 31. After the threaded sleeve 70 is pressed on the auxiliary frame 100, the first limiting edge 72 abuts against the second limiting edge 31, the first limiting edge 72 and the second limiting edge 31 are matched with each other to form a clamping position, and the problem that the bolt cannot be tightly installed due to the fact that the bolt drives the threaded sleeve 70 to slip when the bolt of the steering gear is installed or disassembled can be avoided.

In some embodiments, the threaded sleeve 70 is provided with at least two positioning holes 73 (shown in fig. 3), and the positioning holes 73 extend from the end surface of the threaded sleeve 70 along the axial direction of the threaded sleeve 70. Thus, the sleeve can be prevented from rotating and moving by fixing the pressing machine and the positioning hole 73. Specifically, the press fitting machine can be provided with the salient points corresponding to the positioning holes 73, and when the press fitting machine is pressed, the salient points and the positioning holes 73 are fixed to each other, so that the threaded sleeves 70 are prevented from rotating and moving, the first limiting edges 72 and the second limiting edges 31 can be aligned accurately, and the problems that the first limiting edges 72 and the second limiting edges 31 are not aligned or the auxiliary frame 100 is damaged by pressing during the press fitting process can be effectively avoided.

Referring to fig. 1 and 4, in some embodiments, the first cross member 10 and the second cross member 20 are both hollow and have a hollow space 14, the subframe 100 is provided with a chip outlet 81, and the hollow space 14 of the first cross member 10 and the hollow space 14 of the second cross member 20 are both communicated with the chip outlet 81.

Therefore, the processing waste materials in the first cross beam 10 and the second cross beam 20 can be discharged through the chip outlet holes 81, abnormal noise caused by abnormal movement of the processing waste materials in the first cross beam 10 and the second cross beam 20 during the driving of the vehicle 1000 is avoided, and the driving and riding comfort is improved.

Specifically, the chip holes 81 are disposed through the subframe 100, and the chip holes 81 may have a circular shape, an elliptical shape, a square shape, or the like, without limiting the shape of the chip holes 81. The number of the chip removal holes 81 may be plural to accelerate the discharge of the processing waste in the first beam 10 and the second beam 20. In some embodiments, the first beam 10 and the second beam 20 each have a chip hole 81.

It can be understood that after the first cross member 10, the first longitudinal member 30, the second cross member 20 and the second cross member 20 are connected by welding, through holes 82 (as shown in fig. 5) can be processed in the first cross member 10 and the second cross member 20 for fixing the wire harness and the water pipe. Since the first cross member 10 and the second cross member 20 are in a closed state after welding, aluminum scraps generated after machining cannot be discharged. Therefore, the chip holes 81 can be formed in the first longitudinal beam 30 and the second longitudinal beam 40 before welding, and chips generated by forming the through holes 82 in the process of cleaning the subframe 100 after machining are timely discharged from the chip holes 81.

Referring to fig. 1, in some embodiments, the first end 15 of the first cross member 10 is inserted into the first longitudinal member 30, and the second end 16 of the first cross member 10 is inserted into the second longitudinal member 40. The first end 21 of the second transverse beam 20 is inserted in the first longitudinal beam 30 and the second end 22 of the second transverse beam 20 is inserted in the second longitudinal beam 40. Any two of the first cross beam 10, the second cross beam 20, the first longitudinal beam 30 and the second longitudinal beam 40 are provided with a chip removal hole 81 at the joint.

In this way, the two ends of the first cross beam 10 are respectively inserted into the first longitudinal beam 30 and the second longitudinal beam 40, so that the connection between the first cross beam 10 and the first longitudinal beam 30 and the second longitudinal beam 40 can be more firm. The two ends of the second cross member 20 are respectively inserted into the first longitudinal member 30 and the second longitudinal member 40, so that the first cross member 10 can be more firmly connected with the first longitudinal member 30 and the second longitudinal member 40. The processing waste in the first beam 10 and the second beam 20 can be discharged through the chip holes 81.

Specifically, in some embodiments, a clearance hole 81 is provided at a connection point of the first longitudinal beam 30 and the first end 15 of the first cross beam 10 or the first end 21 of the second cross beam 20, the clearance hole 81 is provided through the first longitudinal beam 30, a clearance hole 81 is provided at a connection point of the second longitudinal beam 40 and the first end 21 of the second cross beam 20 or the first end 15 of the first cross beam 10, and the clearance hole 81 is provided through the second longitudinal beam 40.

In some embodiments, a clearance hole 81 is provided in the first longitudinal beam 30 at the connection with the second end 16 of the first cross beam 10 or the second end 22 of the second cross beam 20, the clearance hole 81 is provided through the first longitudinal beam 30, a clearance hole 81 is provided in the second longitudinal beam 40 at the connection with the second end 22 of the second cross beam 20 or the second end 16 of the first cross beam 10, and the clearance hole 81 is provided through the second longitudinal beam 40.

In some embodiments, the first longitudinal beam 30 is provided with a chip hole 81 at a connection point with both ends of the first cross beam 10 or the second cross beam 20, the chip hole 81 is disposed through the first longitudinal beam 30, the second longitudinal beam 40 is provided with a chip hole 81 at a connection point with both ends of the second cross beam 20 or the first cross beam 10, and the chip hole 81 is disposed through the second longitudinal beam 40.

Referring to fig. 1, 4 and 5, in some embodiments, the first beam 10 and the second beam 20 are hollow and have a hollow space 14, and the first beam 10 and the second beam 20 are provided with a through hole 82 communicating with the hollow space 14. As such, the through-hole 82 may be used to secure a wire harness, a water pipe, and the like. Specifically, the number of the through holes 82 may be plural, and the plural through holes 82 may be provided at intervals on the first beam 10 and the second beam 20 in the extending direction of the first beam 10 and the second beam 20.

Referring to FIGS. 1 and 6, in some embodiments, the subframe 100 has an energy absorption site 90, wherein the energy absorption site 90 has a strength less than the strength of the subframe 100 elsewhere. Thus, when the sub-frame 100 is impacted at a high speed, the energy-absorbing part 90 will break first, so as to prevent the impact energy from being directly transmitted to the passenger compartment from the sub-frame 100, but absorbing energy through the front longitudinal beam of the vehicle body 200, thereby protecting the personal safety of passengers in the passenger compartment.

In some embodiments, the energy absorbing site 90 may be disposed on the first side member 30 or the second side member 40, and the energy absorbing site 90 is a concave shaped stiffener. In the frontal collision process, the energy absorption part 90 is broken due to frontal extrusion, so that the impact force is dispersed to the longitudinal beam of the vehicle body 200, the impact force is prevented from being directly transmitted to the passenger compartment through the auxiliary frame 100, and the safety coefficient of the passenger compartment is improved.

Referring to fig. 1 and 7, a vehicle 1000 according to an embodiment of the present disclosure includes a subframe 100 according to any of the embodiments. The vehicle 1000 may further include a body 200, and the subframe 100 is mounted on the body 200. Therefore, the first cross beam 10, the second cross beam 20, the first longitudinal beam 30 and the second longitudinal beam 40 are formed independently, and the die sinking risk and the defect rate of the auxiliary frame 100 can be reduced. In addition, the connection of the reinforcement plate 50 with the first longitudinal beam 30 and the second longitudinal beam 40 can improve the rigidity and strength of the subframe 100, and ensure the strength performance and durability of the subframe 100.

In the description of the present specification, reference to the description of "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like 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 present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (10)

1. A subframe, comprising:

a first cross member;

the second cross beam and the first cross beam are arranged at intervals;

a first longitudinal beam connecting the first cross beam and the second cross beam;

the first longitudinal beam is connected with the first cross beam and the second cross beam, and the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam are all independently formed and enclosed to form a hollow space;

a stiffener removably connecting the first stringer and the second stringer.

2. The subframe of claim 1 wherein said reinforcement plate has a plurality of attachment locations to said first side member; and/or the reinforcing plate and the second longitudinal beam are provided with a plurality of connecting positions.

3. The subframe of claim 1 wherein said first side member and/or said second side member is removably mounted with a stabilizing bracket.

4. The subframe of claim 1 wherein said first and second side members have threaded bushings inserted therein, said threaded bushings having threaded holes, said threaded bushings being used to mount a steering gear.

5. The subframe of claim 4 wherein said threaded bushing has a first stop edge, and wherein said first and second side members each have a second stop edge, said second stop edges contacting said first stop edges to prevent rotation of said threaded bushing relative to a corresponding one of said first and second side members.

6. The subframe according to claim 1 wherein said first cross member and said second cross member are both hollow and have hollow spaces, said subframe is provided with a chip hole, and said hollow spaces of said first cross member and said second cross member are both in communication with said chip hole.

7. The subframe of claim 6 wherein a first end of said first cross member is inset into said first side member and a second end of said first cross member is inset into said second side member; the first end of the second cross beam is inserted into the first longitudinal beam, the second end of the second cross beam is inserted into the second longitudinal beam, and the chip discharge hole is formed in the joint of any two beams of the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam.

8. The subframe of claim 1 wherein said first cross member and said second cross member are each hollow and have a hollow space, said first cross member and said second cross member being provided with a through hole communicating with said hollow space.

9. The subframe of claim 1 wherein said subframe has energy absorbing locations having a strength less than other locations on said subframe.

10. A vehicle comprising a subframe according to any one of claims 1 to 9.

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