CN108688727B - Auxiliary frame and vehicle - Google Patents
Auxiliary frame and vehicle Download PDFInfo
- Publication number
- CN108688727B CN108688727B CN201810848304.1A CN201810848304A CN108688727B CN 108688727 B CN108688727 B CN 108688727B CN 201810848304 A CN201810848304 A CN 201810848304A CN 108688727 B CN108688727 B CN 108688727B
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- Prior art keywords
- strengthening rib
- rear suspension
- installation department
- reinforcing
- subframe
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- 239000000725 suspension Substances 0.000 claims abstract description 73
- 238000005728 strengthening Methods 0.000 claims abstract description 50
- 238000009434 installation Methods 0.000 claims abstract description 45
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 138
- 230000002787 reinforcement Effects 0.000 claims description 22
- 239000011324 bead Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 description 11
- 239000003351 stiffener Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
Abstract
The invention discloses an auxiliary frame and a vehicle, wherein the auxiliary frame is of a cast aluminum structure and comprises: the front cross beam and the rear cross beam are arranged at intervals along the front-rear direction; the longitudinal beams comprise a left longitudinal beam and a right longitudinal beam which are arranged at intervals along the left-right direction and are connected through a front cross beam and a rear cross beam; rear suspension installation department, rear suspension installation department links to each other with the front beam, and be equipped with first strengthening rib between the junction of front beam and longeron to rear suspension installation department, be equipped with the second strengthening rib between the junction of rear beam to longeron to rear suspension installation department, be equipped with the third strengthening rib between rear beam to the rear suspension installation department, the second strengthening rib links to each other in rear suspension installation department with adjacent first strengthening rib, and form into the V font, the second strengthening rib links to each other in rear suspension installation department with adjacent third strengthening rib, and form into the V font. The auxiliary frame has higher structural strength and rigidity.
Description
Technical Field
The invention relates to the technical field of vehicle manufacturing, in particular to an auxiliary frame and a vehicle with the auxiliary frame.
Background
With the development of science and technology, the energy problem is increasingly remarkable, and the requirements of people on various performances of vehicles are higher and higher, especially for electric vehicles, the endurance mileage of the electric vehicles is one of the most concerned problems at present. In order to improve the comfort and the operability of the electric automobile, an auxiliary frame structure is added on the electric automobile. But the overall quality of sub vehicle frame is great, and sub vehicle frame's structural strength reduces, has increased material use amount and whole car's weight simultaneously, has greatly influenced electric automobile's dynamic nature, has reduced electric automobile's continuation of the journey mileage, has had the space of improvement.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the invention is to propose a subframe which is structurally rigid and lightweight as a whole.
According to the auxiliary frame provided by the embodiment of the invention, the auxiliary frame is of a cast aluminum structure and comprises: the front cross beam and the rear cross beam are arranged at intervals along the front-rear direction; the longitudinal beams comprise left longitudinal beams and right longitudinal beams, the left longitudinal beams and the right longitudinal beams are arranged at intervals along the left-right direction, and the left longitudinal beams and the right longitudinal beams are connected through the front cross beam and the rear cross beam; the rear suspension installation department, rear suspension installation department with the front beam links to each other, just the front beam with the junction of longeron arrives be equipped with first strengthening rib between the rear suspension installation department, the rear beam arrives the junction of longeron arrives be equipped with the second strengthening rib between the rear suspension installation department, the rear beam arrives be equipped with the third strengthening rib between the rear suspension installation department, the second strengthening rib with adjacent first strengthening rib is in rear suspension installation department links to each other, and forms into the V font, the second strengthening rib with adjacent the third strengthening rib is in rear suspension installation department links to each other, and forms into the V font, the second strengthening rib is located first strengthening rib with between the third strengthening rib.
According to the auxiliary frame disclosed by the embodiment of the invention, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs are arranged between the rear suspension mounting part and other connecting pieces of the auxiliary frame, so that the rear suspension is ensured to have higher mounting rigidity, the transmission of the vibration of the power assembly is reduced, and the whole quality of the auxiliary frame can be greatly reduced through the slotted hole structure between the reinforcing ribs, therefore, the materials and the cost required by the production of the auxiliary frame can be saved, and the requirement of light weight of the auxiliary frame is realized.
According to the auxiliary frame of the embodiment of the invention, weight reducing holes are arranged between the first reinforcing rib and the second reinforcing rib, between the second reinforcing rib and the third reinforcing rib and between the adjacent third reinforcing ribs.
According to the auxiliary frame of the embodiment of the invention, the first reinforcing rib is provided with a first reinforcing column at one end close to the longitudinal beam, and the second reinforcing column is provided with a second reinforcing column at one end close to the rear suspension mounting part.
According to an embodiment of the subframe of the present invention, the first reinforcement column and the second reinforcement column are hollow columns.
According to the auxiliary frame of the embodiment of the invention, one end, close to the rear suspension mounting part, of the second reinforcing rib is connected with the second reinforcing column, the third reinforcing ribs comprise three reinforcing ribs which are arranged at intervals along the transverse direction, one third reinforcing rib among the three reinforcing ribs is connected between the rear suspension mounting part and the rear cross beam, and the other two third reinforcing ribs are connected between the second reinforcing column and the rear cross beam.
According to the subframe of one embodiment of the present invention, the third reinforcing bead extends in the front-rear direction, and the height of the third reinforcing bead gradually decreases from front to rear.
According to the auxiliary frame of the embodiment of the invention, the connection parts of the first reinforcing rib, the second reinforcing rib and the third reinforcing rib with the front cross beam and the rear cross beam are provided with reinforcing bosses.
According to the subframe of one embodiment of the present invention, at least one of the left side member, the right side member, the front cross member, and the second reinforcing rib is provided with a third reinforcing pillar.
According to the auxiliary frame of the embodiment of the invention, the front cross beam and the rear cross beam are arc-shaped, and the middle part of the front cross beam and the middle part of the rear cross beam are concave towards one side close to each other.
The invention further provides a vehicle.
According to the vehicle of the embodiment of the invention, the auxiliary frame of any one of the embodiments is provided.
The advantages of the vehicle and the subframe are the same as those of the prior art, and are not described in detail herein.
Additional aspects and advantages of the invention 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 invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention 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 schematic structural view of a subframe according to an embodiment of the present invention;
fig. 2 is a top view of a subframe according to an embodiment of the invention.
Reference numerals:
the sub-frame 100 is provided with a pair of side frames,
a front cross beam 1, a rear cross beam 2, a left longitudinal beam 3, a right longitudinal beam 4, a rear suspension mounting part 5,
the support comprises a first reinforcing rib 6, a second reinforcing rib 7, a third reinforcing rib 8, a support reinforcing rib 9, a lightening hole 10, a first reinforcing column 11, a second reinforcing column 12, a third reinforcing column 13, a reinforcing boss 14, a stabilizer bar mounting position 15, a front swing arm front mounting point 16, a front swing arm rear mounting point 17 and a vertical support structure 18.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The following describes a subframe 100 according to an embodiment of the present invention with reference to fig. 1-2, wherein the subframe 100 has a smaller overall mass and a larger structural strength and rigidity, and can greatly improve various performances of a vehicle having the subframe 100 on the premise of meeting the requirement of light weight.
As shown in fig. 1-2, according to the subframe 100 of the embodiment of the present invention, the whole subframe 100 is of a cast aluminum structure, and when the subframe 100 is cast, the subframe 100 can be poured up and down with 2/3 of the Z-direction as an end surface to form the subframe 100 into an integrated cast aluminum structure. It should be noted that aluminum has the properties of low density, oxidation resistance, etc., so that the subframe 100 with the cast aluminum structure has the advantages of durability, light weight, rust prevention, and the integral structure is integrally formed, and the structural strength and rigidity of each position are high, thereby being beneficial to meeting the requirement of light weight of the subframe 100.
The longitudinal direction, i.e., the X direction, described in the present application refers to the front-rear direction of the vehicle; the transverse direction is Y direction, which refers to the left-right direction of the vehicle; the vertical direction is the Z direction, and refers to the up-down direction of the vehicle.
As shown in fig. 1-2, the subframe 100 includes a front cross member 1, a rear cross member 2, a side member, and a rear suspension mount 5.
The front cross beam 1 and the rear cross beam 2 are arranged at intervals along the front-rear direction, the longitudinal beams comprise a left longitudinal beam 3 and a right longitudinal beam 4, the left longitudinal beam 3 and the right longitudinal beam 4 are arranged at intervals along the left-right direction, the left longitudinal beam 3 and the right longitudinal beam 4 are connected through the front cross beam 1 and the rear cross beam 2, namely, two ends of the front cross beam 1 are respectively connected with the left longitudinal beam 3 and the right longitudinal beam, and two ends of the rear cross beam 2 are respectively connected with the left longitudinal beam 3 and the right longitudinal beam 4.
Wherein, the front end of left longeron 3 links to each other with front beam 1, the rear end of left longeron 3 links to each other with rear beam 2, the front end of right longeron 4 links to each other with front beam 1, the rear end of right longeron 4 links to each other with rear beam 2, thereby, front beam 1, left longeron 3, rear beam 2 and right longeron 4 connect gradually the major structure that forms sub vehicle frame 100, and then be convenient for connect other components of vehicle, sub vehicle frame 100's overall structure is simple, and front beam 1, left longeron 3, rear beam 2 and right longeron 4 are integrated into one piece, have very high structural rigidity and intensity, and then promote performance.
The rear suspension mounting part 5 is used for mounting a rear suspension system, and further plays a certain supporting role on a power system of the vehicle so as to enable the power transmission of the vehicle to have a stable running environment. The rear suspension installation department 5 links to each other with front beam 1, as shown in fig. 1 and 2, and rear suspension installation department 5 is tubular, and the axis of rear suspension installation department 5 is along vertical, and the preceding perisporium of rear suspension installation department 5 is fixed connection with front beam 1, like this, front beam 1 and rear suspension installation department 5 interconnect and mutual support, and the effort that rear suspension installation department 5 received can transmit whole sub vehicle frame 100, and then makes the rear suspension system have stable supporting environment, promotes the performance of whole car.
As shown in fig. 1 and 2, a first reinforcing rib 6 is arranged between the connection part of the front cross beam 1 and the longitudinal beam and the rear suspension mounting part 5, namely, the first reinforcing rib 6 extends from the rear suspension mounting part 5 to the connection part of the front cross beam 1 and the longitudinal beam. The first strengthening rib 6 includes two, and one of two first strengthening ribs 6 locates between the junction of front beam 1 and left longeron 3 to back suspension installation department 5, and the junction of front beam 1 and right longeron 4 is located to the another one between the back suspension installation department 5, and the joint strength of front beam 1 and longeron can be improved to first strengthening rib 6 to make the junction of front beam 1 and longeron be difficult for the fracture, can use for a long time, and first strengthening rib 6 can play the effect of connection support to back suspension installation department 5, in order to transmit the effort that back suspension installation department 5 received to front beam 1, left longeron 3 and right longeron 4.
As shown in fig. 1 and 2, a second reinforcing rib 7 is arranged between the connection part of the rear cross beam 2 and the longitudinal beam and the rear suspension mounting part 5, namely, the second reinforcing rib 7 extends from the rear suspension mounting part 5 to the connection part of the rear cross beam 2 and the longitudinal beam. The second strengthening rib 7 includes two, and one of two second strengthening ribs 7 is located between rear cross beam 2 and the junction of left longeron 3 to rear suspension installation department 5, and another locates between rear cross beam 2 and the junction of right longeron 4 to rear suspension installation department 5, and the joint strength of rear cross beam 2 and longeron can be improved to second strengthening rib 7 to make rear cross beam 2 and longeron's junction be difficult for the fracture, can use for a long time, and second strengthening rib 7 can play the effect of connection support to rear suspension installation department 5, in order to transmit rear cross beam 2, left longeron 3 and right longeron 4 with the effort that rear suspension installation department 5 received. In one embodiment, the height of the first ribs 6 and the second ribs 7 is 64mm.
Wherein, the second reinforcing rib 7 is connected with the adjacent first reinforcing rib 6 at the rear suspension installation portion, and is formed into a V-shaped structure, as in fig. 1, the left second reinforcing rib 7 and the first reinforcing rib 6 are formed into a V-shaped structure, and the second reinforcing rib 7, the first reinforcing rib 6 and the left longitudinal beam 3 form a triangle structure, it can be understood that the triangle structure stability is good, the stability of the connection of the second reinforcing rib 7, the first reinforcing rib 6 and the left longitudinal beam 3 is excellent, and the structural shape of the right side of the subframe 100 is the same as the left side. Thus, the strength and rigidity of the overall structure of the subframe 100 can be greatly improved, and the stability thereof can be increased.
As shown in fig. 1 and 2, the two second reinforcing ribs 7 are connected at the rear suspension mounting portion 5, and the arrangement state of the two second reinforcing ribs 7 is formed in a V-shaped structure, and meanwhile, the two second reinforcing ribs 7 and the rear cross member 2 form a triangle structure, so that the connection structure formed by the two second reinforcing ribs 7 and the rear cross member 2 has excellent stability, is not easy to deform and is convenient for long-term use, and therefore, the strength and rigidity of the overall structure of the subframe 100 can be greatly improved, and the stability of the subframe is improved.
A third stiffener 8 is arranged between the rear cross beam 2 and the rear suspension mounting portion 5, the rear suspension mounting portion 5 is located between the front cross beam 1 and the rear cross beam 2, the third stiffener 8 extends longitudinally, i.e. the third stiffener 8 extends in the front-rear direction, whereby the third stiffener 8 can transfer the forces to which the rear suspension mounting portion 5 is subjected to the rear cross beam 2, in one embodiment the height of the third stiffener 8 is 60mm.
As shown in fig. 1 and 2, one ends of the first reinforcing rib 6, the second reinforcing rib 7 and the third reinforcing rib 8 are connected with the rear suspension mounting portion 5, and the first reinforcing rib 6, the second reinforcing rib 7 and the third reinforcing rib 8 are distributed along the circumferential direction of the rear suspension mounting portion 5. From this, the effort that rear suspension installation department 5 received accessible first strengthening rib 6, second strengthening rib 7, third strengthening rib 8 transmits whole sub vehicle frame 100, thereby reduce the local stress of rear suspension installation department 5 effectively, improve sub vehicle frame 100's overall structure's intensity and rigidity, the installation rigidity of rear suspension system has been guaranteed, reduce the transmission of power assembly vibration effectively, and sub vehicle frame 100's whole is simple, and simple to operate, the commonality is strong, promote whole car performance, and form the slotted hole structure of hollowing in the adjacent two in the first strengthening rib 6, second strengthening rib 7, the third strengthening rib 8 three, can greatly reduce sub vehicle frame 100's overall mass, save sub vehicle frame 100 production required material, reduce sub vehicle frame 100's manufacturing cost, and then realize sub vehicle frame 100 structure lightweight's requirement.
As shown in fig. 1 and 2, the second reinforcing rib 7 is connected with the adjacent third reinforcing rib 8 at the rear suspension mounting portion 5, the second reinforcing rib 7 and the third reinforcing rib 8 are formed into a V-shaped structure, and the second reinforcing rib 7, the adjacent third reinforcing rib 8 and the rear cross beam 2 form a triangular connection structure, so that the connection strength of the second reinforcing rib 7 and the third reinforcing rib 8 is effectively increased, and the connection structure formed by the second reinforcing rib 7, the third reinforcing rib 8 and the rear cross beam 2 has good stability. Therefore, the strength and the rigidity of the whole structure of the auxiliary frame 100 can be greatly improved, and the stability of the auxiliary frame 100 can be improved, so that the serious deformation of a vehicle with the auxiliary frame 100 in an accident can be effectively avoided, and the riding safety of passengers can be improved.
According to the auxiliary frame 100 provided by the embodiment of the invention, the first reinforcing ribs 6, the second reinforcing ribs 7 and the third reinforcing ribs 8 are arranged between the rear suspension mounting part 5 and other connecting pieces of the auxiliary frame 100, so that the rear suspension can be ensured to have higher mounting rigidity, the transmission of the vibration of the power assembly is reduced, and the whole quality of the auxiliary frame 100 can be greatly reduced through the slotted hole structure between the reinforcing ribs, thereby saving materials and cost required by the production of the auxiliary frame 100 and realizing the requirement of light weight of the auxiliary frame 100.
In some embodiments, as shown in fig. 1 and 2, a lightening hole 10 is provided between the first reinforcing rib 6 and the second reinforcing rib 7, a lightening hole 10 is provided between the second reinforcing rib 7 and the third reinforcing rib 8, a lightening hole 10 is provided between the adjacent third reinforcing ribs 8, and the lightening holes 10 are all provided in the stress dispersing area. Thus, the subframe 100 has the plurality of weight-reducing holes 10, and the plurality of weight-reducing holes 10 are spaced apart from the first reinforcing rib 6, the second reinforcing rib 7 and the third reinforcing rib 8, so that the structural strength of each position of the subframe 100 can be made uniform, and the mass distribution of each position of the subframe 100 can be made uniform. In this way, the rigidity of the whole structure of the auxiliary frame 100 is improved, the mounting rigidity of the rear suspension is ensured, the mass of the whole structure of the auxiliary frame 100 is reduced, and the design requirement of light weight of the vehicle structure is met.
As shown in fig. 1 and 2, the first reinforcing rib 6 and the second reinforcing rib 7 on the left side and the left longitudinal beam 3 form a triangular supporting structure, the first reinforcing rib 6 and the second reinforcing rib 7 on the right side and the right longitudinal beam 4 form a triangular supporting structure, that is, the lightening holes 10 between the first reinforcing rib 6 and the second reinforcing rib 7 are formed into triangular through holes, so that the subframe 100 can be ensured to have effective supporting rigidity and strength, the overall quality of the subframe 100 is reduced, materials required for production are reduced, and production cost is reduced.
In one embodiment, the structure of the lightening hole 10 is located in a region with small structural rigidity contribution of the subframe 100, and the area of the lightening hole 10 occupies 40% of the total area of the subframe 100, so that the overall mass of the subframe 100 is greatly reduced, and the structural weight of the subframe 100 is effectively reduced.
In the embodiment shown in fig. 1 and 2, the end of the first reinforcing rib 6 near the longitudinal beam is provided with a first reinforcing column 11, the first reinforcing column 11 is located at the joint of the front cross beam 1 and the longitudinal beam, and the first reinforcing column 11 can improve the structural rigidity and strength of the joint of the front cross beam 1 and the longitudinal beam. One end of the first reinforcing rib 6, which is close to the rear suspension mounting portion 5, is provided with a second reinforcing column 12, the second reinforcing column 12 is located at the joint of the rear cross beam 2 and the longitudinal beam, and the first reinforcing column 11 can improve structural rigidity and strength of the joint of the rear cross beam 2 and the longitudinal beam.
Wherein, as shown in fig. 1, from this, set up first reinforcement post 11 and second reinforcement post 12 respectively at the both ends of first strengthening rib 6, can make the connection of first strengthening rib 6 and back suspension installation department 5 more stable, firm, increase the rigidity of connection of front beam 1 and longeron junction simultaneously, reduce the local stress of front beam 1 and longeron junction, guarantee the supporting role of first strengthening rib 6, and then make the overall structure of sub vehicle frame 100 more stable.
In some embodiments, as shown in fig. 1 and 2, the first reinforcement column 11 and the second reinforcement column 12 are hollow columns, and it is understood that the first reinforcement column 11 and the second reinforcement column 12 are used to improve the structural strength and rigidity of the subframe 100, and thus, the first reinforcement column 11 and the second reinforcement column 12 are hollow structures, so that the mass of the first reinforcement column 11 and the second reinforcement column 12 can be reduced and the cost required for production can be saved, and thus, the overall structural strength of the subframe 100 is improved, and the requirement for light weight can be satisfied.
In some embodiments, as shown in fig. 1, one end of the second reinforcing rib 7 near the rear suspension mounting portion 5 is connected to the second reinforcing post 12, the third reinforcing rib 8 includes three third reinforcing ribs 8 disposed at intervals in the lateral direction, one third reinforcing rib 8 in the middle is connected between the rear suspension mounting portion 5 and the rear cross member 2, and the other two third reinforcing ribs 8 are connected between the second reinforcing post 12 and the rear cross member 2, that is, one of the first reinforcing rib 6, the second reinforcing rib 7, and the three third reinforcing ribs 8 is arranged in the circumferential direction of the second reinforcing post 12, and the second reinforcing post 12 and the rear suspension mounting portion 5 are stably connected. Accordingly, the force applied to the rear suspension mounting portion 5 can be effectively transmitted to the side members and the cross members of the subframe 100, and further to the whole vehicle, through the first reinforcing rib 6, the second reinforcing rib 7, and the third reinforcing rib 8 in time.
In some embodiments, the third reinforcing ribs 8 extend in the front-rear direction, the three third reinforcing ribs 8 are disposed at intervals in the lateral direction, and as shown in fig. 1, the three third reinforcing ribs 8 are disposed in parallel, and the height of the third reinforcing ribs 8 gradually decreases from front to rear, that is, the height of the third reinforcing ribs 8 is arranged in a trapezoid from front to rear, and the reinforcing ribs are novel and simple in structure and easy to realize the transmission of the bearing capacity of the subframe 100.
In some embodiments, the connection between the first stiffener 6 and the front beam 1 is provided with a stiffening boss 14, the connection between the second stiffener 7 and the rear beam 2 is provided with a stiffening boss 14, the connection between the third stiffener 8 and the rear beam 2 is provided with a stiffening boss 14, as shown in fig. 2, the stiffening boss 14 at the connection between the third stiffener 8 and the rear beam 2 protrudes backwards, i.e. the stiffening boss 14 protrudes from the side of the rear beam 2 facing away from the third stiffener 8. Through establishing the boss 14 of strengthening in the junction of strengthening rib and front beam 1 or rear beam 2, can improve structural strength and rigidity of this junction effectively, and then avoid strengthening rib and front beam 1 junction or strengthening rib and rear beam 2 junction local stress too big to lead to the connection fracture, from this, can improve sub vehicle frame 100 overall structure's joint strength and stability, increase of service life is convenient for use for a long time.
In some embodiments, at least one of the left side member 3, the right side member 4, the front cross member 1, and the second reinforcing rib 7 is provided with a third reinforcing column 13, the third reinforcing column 13 is of a solid cylindrical structure, and the third reinforcing column 13 is used for improving the structural strength of the connecting member provided with the third reinforcing column 13. As shown in fig. 1, the left longitudinal beam 3, the right longitudinal beam 4, the front cross beam 1 and the second reinforcing ribs 7 are all provided with third reinforcing columns 13, the auxiliary frame 100 comprises six third reinforcing columns 13, and as shown in fig. 1, the outer side of each third reinforcing column 13 is provided with a triangular reinforcing rib structure, namely, the cross section of each third reinforcing column 13 is "+" or "+" shaped, so that the rigidity of the reinforcing ribs can be ensured, and the overall rigidity of the auxiliary frame 100 is improved. Through setting up a plurality of third reinforcing columns 13, can improve the structural strength of sub vehicle frame 100 effectively, and as shown in fig. 1, third reinforcing columns 13 all are located the middle part that has its connecting piece, and it is understood that left longeron 3, right longeron 4 or front cross member 1 are the easiest fracture in its middle part when the power is transmitted, from this, locate the middle part of connecting piece with third reinforcing column 13 can obviously improve the structural strength of this connecting piece, and then promote the overall structural strength of sub vehicle frame 100, be convenient for long-term use.
In the embodiment shown in fig. 1-2, the front beam 1 and the rear beam 2 are arc-shaped, and the middle part of the front beam 1 and the middle part of the rear beam 2 are concave towards one side close to each other, and after the front beam 1, the left longitudinal beam 3, the rear beam 2 and the right longitudinal beam 4 are sequentially connected, the overall structure of the auxiliary frame 100 is butterfly-shaped, so that the structural materials of the auxiliary frame 100 are utilized to the greatest extent on the premise of ensuring the overall rigidity of the auxiliary frame 100, and the service performance of the auxiliary frame 100 is further improved.
It should be noted that, sub-frame 100 still includes a plurality of front swing arm mounting points, as shown in fig. 1 and 2, the front end and the rear end of longeron are equipped with front swing arm front mounting point 16 and front swing arm rear mounting point 17 respectively, front longeron and rear longeron all are equipped with front swing arm front mounting point 16 and front swing arm rear mounting point 17, from this, sub-frame 100 can be fixed continuous through a plurality of front swing arm mounting points with the front swing arm, and as shown in fig. 2, vertical bearing structure 18 has been arranged to the below of front swing arm front mounting point 16, vertical bearing structure 18 can guarantee the requirement of front swing arm mounting point dynamic stiffness effectively, vertical bearing structure 18 can be to sub-frame 100 can be connected with the front swing arm and play stable supporting role, with sub-frame 100 structural support and automobile body, improve sub-frame 100 overall structure's stability, promote the performance of whole car.
The sub frame 100 has a stabilizer bar mounting position 15 for mounting a stabilizer bar, and as shown in fig. 1 and 2, the left side member 3 and the right side member 4 are each provided with the stabilizer bar mounting position 15, the stabilizer bar mounting position 15 has a mounting surface protruding upward, and the mounting surface is provided with a stabilizer bar mounting point for mounting with a stabilizer bar. Wherein, stabilizer bar installation position 15 and the one end that second strengthening rib 7 deviate from second strengthening column 12 link to play the effect of support and force conduction to the installation of stabilizer bar, and then guarantee the local rigidity of stabilizer bar mounting point. As shown in fig. 1, three radial supporting reinforcing ribs 9 are arranged at the front part of the stabilizer bar installation position 15, the height of the supporting reinforcing ribs 9 is 19mm, the connection rigidity of the auxiliary frame 100 and the vehicle body is ensured, the integral installation rigidity of the auxiliary frame 100 and the dynamic rigidity of the front swing arm installation point on the auxiliary frame 100 can be effectively improved, the integral performance of the auxiliary frame 100 is improved, and the service performance of the whole vehicle is further improved.
The inventor carries out finite element simulation analysis on the auxiliary frame 100 for a plurality of times, as shown in a table 1, wherein the auxiliary frame 100 has a constraint state first-order modal frequency of 335.3Hz, compared with the butterfly-shaped steel auxiliary frame 100 with similar structure, the mode is improved by 150Hz, the dynamic stiffness of the rear suspension mounting part 5 is improved by 2000N/mm, the mass of the auxiliary frame 100 is reduced by 40%, the constraint state second-order modal frequency of the auxiliary frame 100 reaches 485.0Hz, and the constraint state third-order modal frequency of the auxiliary frame 100 reaches 525.6Hz, so that the auxiliary frame 100 has good service performance, and the requirement of light structure is met on the premise that the auxiliary frame 100 ensures the modal stiffness performance.
Table 1 subframe modal frequencies
The invention further provides a vehicle.
According to the vehicle of the embodiment of the invention, the auxiliary frame 100 of any one of the embodiments is arranged, and the whole vehicle with the auxiliary frame 100 has lower quality and better dynamic property.
In the description of the present invention, 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 invention 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 invention.
In the description of the present invention, "plurality" means two or more.
In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 invention 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 invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a sub vehicle frame, its characterized in that, sub vehicle frame is cast aluminium structure, and includes:
the front cross beam and the rear cross beam are arranged at intervals along the front-rear direction;
the longitudinal beams comprise left longitudinal beams and right longitudinal beams, the left longitudinal beams and the right longitudinal beams are arranged at intervals along the left-right direction, the left longitudinal beams and the right longitudinal beams are connected through the front cross beam and the rear cross beam, and the front cross beam, the left longitudinal beams, the rear cross beam and the right longitudinal beams are integrally formed;
the rear suspension installation department, rear suspension installation department with the front beam links to each other, just the front beam with the junction of longeron arrives be equipped with first strengthening rib between the rear suspension installation department, the rear beam with the junction of longeron arrives be equipped with the second strengthening rib between the rear suspension installation department, the rear beam arrives be equipped with the third strengthening rib between the rear suspension installation department, the second strengthening rib with adjacent first strengthening rib is in rear suspension installation department links to each other, and forms into the V font, the second strengthening rib with adjacent the third strengthening rib is in rear suspension installation department links to each other, and forms into the V font, the second strengthening rib is located first strengthening rib with between the third strengthening rib.
2. The subframe of claim 1 wherein weight-reducing apertures are provided between said first and second reinforcing bars, between said second and third reinforcing bars, and between adjacent said third reinforcing bars.
3. The subframe of claim 1 wherein said first reinforcement rib has a first reinforcement post at an end thereof adjacent said longitudinal beam and a second reinforcement post at an end thereof adjacent said rear suspension mounting portion.
4. A subframe according to claim 3 wherein the first and second reinforcement columns are hollow columns.
5. A subframe according to claim 3 wherein the second reinforcement bar is connected to the second reinforcement post at an end thereof adjacent the rear suspension mounting portion, the third reinforcement bar comprising three laterally spaced apart ones, one of which is connected between the rear suspension mounting portion and the rear cross member, and the other two of which are connected between the second reinforcement post and the rear cross member.
6. The subframe according to any one of claims 1 to 5, wherein the third bead extends in the front-rear direction, and the height of the third bead gradually decreases from front to rear.
7. The subframe according to any one of claims 1 to 5, wherein the first, second, and third reinforcing ribs are provided with reinforcing bosses at the junctions thereof with the front and rear cross members.
8. The subframe according to any one of claims 1 to 5, wherein at least one of the left side member, the right side member, the front cross member, and the second reinforcement rib is provided with a third reinforcement column.
9. The subframe of any one of claims 1-5 wherein the front and rear cross members are each arcuate with a central portion of the front and rear cross members each concave toward a side proximate to each other.
10. A vehicle, characterized in that a subframe as claimed in any one of claims 1-9 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848304.1A CN108688727B (en) | 2018-07-27 | 2018-07-27 | Auxiliary frame and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810848304.1A CN108688727B (en) | 2018-07-27 | 2018-07-27 | Auxiliary frame and vehicle |
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| Publication Number | Publication Date |
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| CN108688727A CN108688727A (en) | 2018-10-23 |
| CN108688727B true CN108688727B (en) | 2023-12-19 |
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| CN201810848304.1A Active CN108688727B (en) | 2018-07-27 | 2018-07-27 | Auxiliary frame and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111301524B (en) * | 2018-12-11 | 2022-03-25 | 上海汽车集团股份有限公司 | Pure electric vehicle and rear auxiliary frame thereof |
| JP7164871B2 (en) * | 2018-12-27 | 2022-11-02 | ヒルタ工業株式会社 | automotive cross member |
| CN115447670B (en) * | 2021-06-08 | 2024-02-02 | 北京汽车股份有限公司 | Frame structure and vehicle |
| CN113264110A (en) * | 2021-06-29 | 2021-08-17 | 四川建安工业有限责任公司 | Rib type aluminum alloy front auxiliary frame formed by vacuum die-casting |
| CN115352528A (en) * | 2022-09-16 | 2022-11-18 | 岚图汽车科技有限公司 | Front auxiliary frame and vehicle thereof |
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| CN108688727A (en) | 2018-10-23 |
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