CN114013509A - Casting type rear auxiliary frame of asymmetric upper and lower cross beams - Google Patents
Casting type rear auxiliary frame of asymmetric upper and lower cross beams Download PDFInfo
- Publication number
- CN114013509A CN114013509A CN202111322052.7A CN202111322052A CN114013509A CN 114013509 A CN114013509 A CN 114013509A CN 202111322052 A CN202111322052 A CN 202111322052A CN 114013509 A CN114013509 A CN 114013509A
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- longitudinal beam
- support
- cross beam
- cross
- butt joint
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- 238000005266 casting Methods 0.000 title claims description 4
- 210000001503 joint Anatomy 0.000 claims abstract description 21
- 241000283707 Capra Species 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 241000594310 Randia aculeata Species 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
-
- 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
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention belongs to the technical field of automobile parts, and particularly relates to a cast rear auxiliary frame of an asymmetric upper cross beam and an asymmetric lower cross beam. The front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam are integrally combined into a trapezoid; the rear auxiliary frame comprises a left longitudinal beam, a right longitudinal beam, a left butt joint, a right butt joint, a middle frame connector, a right butt joint, a left front support bracket, a right rear support bracket, a left side longitudinal beam, a right side longitudinal beam, a left side longitudinal beam, a right side transverse connection and a left side transverse connection, a right side transverse connection, a rear support, a rear frame and a rear frame, a rear support, a rear side of the left side beam, a rear frame and a rear frame, a rear frame and a rear frame, a rear frame and a rear frame, a rear frame and a rear frame, a rear frame and a rear frame, a rear frame and a rear frame.
Description
The invention belongs to the technical field of automobile parts, and particularly relates to a cast rear auxiliary frame of an asymmetric upper cross beam and an asymmetric lower cross beam.
Background
The rear auxiliary frame of the automobile is an important component in an automobile chassis system, the rear auxiliary frame is connected with parts such as an automobile body and a suspension, excitation such as vibration and noise of a road surface can be reduced, and transmission to the automobile body is achieved, meanwhile, the rigidity of the suspension can be improved, and therefore the whole automobile is good in durability and comfort, and the prior art is provided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problem that the performance and lightweight requirements of the rear auxiliary frame of the automobile cannot be well met in the prior art, the cast rear auxiliary frame with the asymmetric upper and lower cross beams can keep the weight and section characteristic complexity of the rear auxiliary frame in the aspect of a rear frame, but can meet the lightweight requirements, control the rise of production cost and the reduction of production efficiency, and improve the structural mode, rigidity, NVH (noise vibration and harshness) and other performances of the rear auxiliary frame; after detection, the rigidity of the auxiliary frame is improved by about 50%, and the structural mode is improved by about 10-18%.
In order to solve the technical problem, the cast rear auxiliary frame with the asymmetric upper and lower cross beams comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam which are integrally combined into a trapezoid; the butt joint device is characterized in that butt joint barrels are arranged on the head ends of the left longitudinal beam and the right longitudinal beam inwards along the transverse axis, a front cross beam is transversely connected between the butt joint barrels, a lower butt joint barrel is arranged on the tail ends of the left longitudinal beam and the right longitudinal beam inwards along the transverse axis, a rear cross beam is transversely connected between the lower butt joint barrels, symmetrical structures of the left longitudinal beam and the right longitudinal beam are provided with sleeve lining goat corners outside the butt joint barrels, a dog-ear corner is arranged below the sleeve lining goat corners, a longitudinal beam forebody is extended and cast from the dog-ear corner, a middle frame connector is arranged right below the dog-ear corner, a connector group is arranged on the inner side of the middle frame connector in an inner corner crossing manner, a branch adapter is further arranged below the longitudinal beam forebody in the adapter group, and the left end lower portion of the front cross beam and the front end lower portion of the left longitudinal beam are connected with the adapter group; the right front support bracket is connected with the lower part of the right end of the front cross beam and the lower part of the front end of the right longitudinal beam; the branch adapter is connected with the lower part of the left end of the rear cross beam and the lower part of the rear end of the left longitudinal beam, and the right lower swing arm support is connected with the lower part of the right end of the rear cross beam and the lower part of the rear end of the right longitudinal beam;
the left connecting bracket is connected between the adapter group and the branch adapter; the right connecting bracket is connected between the right front supporting bracket and the right lower swing arm bracket.
Preferably, the adapter group comprises a left front support and a left front support rear plate connected with the left front support, the front end of the left connecting bracket and the left end of the front cross beam are both connected with the left front support, and the front end of the left connecting bracket, the left end of the front cross beam and the front end of the left longitudinal beam are all connected with the left front support rear plate;
the right front support bracket comprises a right front support and a right front support rear plate connected with the right front support, the front end of the right connecting bracket 19 is connected with the right front support and the right front support rear plate, the front end of the right connecting bracket and the right end of the front cross beam are connected with the right front support, and the front end of the right connecting bracket, the right end of the front cross beam and the front end of the right longitudinal beam are connected with the right front support rear plate.
Preferably, the branch adapter comprises a left lower swing arm and a left lower swing arm rear plate connected with the left lower swing arm, the rear end of the left connecting support and the left end of the rear cross beam are connected with the left lower swing arm, and the left longitudinal beam is connected with the left lower swing arm rear plate;
the right lower swing arm support comprises a right lower swing arm and a right lower swing arm rear plate connected with the right lower swing arm, the rear end of the right connecting support and the right end of the rear cross beam are connected with the right lower swing arm, and the right longitudinal beam is connected with the right lower swing arm rear plate.
Preferably, the front end of the left lower swing arm is provided with a first flanging used for connecting the rear end of the left connecting support, and the front end of the right lower swing arm is provided with a second flanging used for connecting the rear end of the left connecting support.
Preferably, the rear end of the left connecting bracket is welded on the first flanging; the rear end of the right connecting bracket 19 is welded to the second flange.
Preferably, the front cross beam, the left longitudinal beam and the right longitudinal beam are all of tubular beam structures, and the rear cross beam is a cast molding piece.
Preferably, the cross sections of the middle parts of the front cross beam, the left longitudinal beam and the right longitudinal beam are circular; the cross sections of the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are flat.
Preferably, the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are provided with mounting holes; the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are connected with the vehicle body through bushing sleeves or bushings penetrating through the mounting holes.
Preferably, the left connecting bracket and the right connecting bracket have a U-shaped or V-shaped cross section.
According to the rear subframe provided by the embodiment of the invention, the left longitudinal beam and the right longitudinal beam are of symmetrical structures, so that the adapter, the right front support bracket, the branch adapter and the right lower swing arm bracket on the left longitudinal beam and the right longitudinal beam can be connected firmly and have an optimized structural mode; the front cross beam and the rear cross beam are asymmetrical, and after the front cross beam and the rear cross beam are improved, the left connecting support is connected between the adapter and the branch adapter; the right connecting bracket 19 is connected between the right front support bracket and the right lower swing arm bracket. Therefore, the rear auxiliary frame in the invention enables the front support bracket to be supported through the connecting bracket; the device comprises an adapter, a right front supporting bracket and a lower swing arm bracket; the auxiliary frame comprises a branch adapter and a lower right swing arm support which form a two-end supporting structure, so that the Y-direction span of the support is connected, and the first-order torsion mode and the first-order bending mode of the rear auxiliary frame are obviously improved; the structural mode improves the static rigidity and dynamic rigidity values of about 60HZ and the mounting points of the front support bracket and the lower swing arm bracket; all the wire harness holes are adjusted, the mold flow is also adjusted, the welding positions of the lower cross beam and the longitudinal beam of the aluminum casting are moved and combined to be more firmly and concealed in an internal cavity, the allowance of a rough machining machine is adjusted, the rigidity of the auxiliary frame is improved by about 50% through detection, the structural mode is improved by about 10-18%, and the manufacturing performance of an electronic mechanical machine tool is further improved; meanwhile, the supporting capacity, the strength and the fatigue life of the rear auxiliary frame are obviously improved, the platform derivative capacity of the rear auxiliary frame is enhanced, the requirements of the durability, the comfort, the strength and the rigidity of the whole automobile of the automobile are met, the thicknesses of the front supporting bracket and the lower swing arm bracket are reduced, the light weight target is realized, the production cost is reduced, and the production efficiency is improved. Meanwhile, the invention has the advantages of simple structure, simple manufacturing process, high production efficiency, less investment of mould and development cost, short development period, capability of meeting the requirements of the durability, comfort, strength and rigidity of the whole automobile of the automobile and improvement on the performance of the rear auxiliary frame.
Drawings
FIG. 1 is a front view of the present invention;
fig. 2 is an exploded assembly view of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "middle", and the like, are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and do not 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 orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 1 and 2, fig. 1 is a cast rear subframe of asymmetric upper and lower cross members according to an embodiment of the present invention, which includes a front cross member 1, a rear cross member 2, a left longitudinal member 3, and a right longitudinal member 4, which are integrally combined into a trapezoid; the butt joint device is characterized in that butt joint barrels 5 are arranged on the head ends of the left longitudinal beam 3 and the right longitudinal beam 4 inwards along the transverse axis, a front cross beam 1 is arranged between the butt joint barrels 5 in a transverse connection mode, butt joint barrels 6 are arranged on the tail ends of the left longitudinal beam 3 and the right longitudinal beam 4 inwards along the transverse axis, a rear cross beam 2 is arranged between the butt joint barrels 6 in a transverse connection mode, symmetrical structures of the left longitudinal beam 3 and the right longitudinal beam 4 are arranged on the outer side of each butt joint barrel 5, a lining goat horn 7 is arranged below the lining goat horn 7, a folding corner 12 is arranged below the lining goat horn 7, a longitudinal beam front body 13 is extended and cast from the folding corner 12, a middle frame connector 10 is arranged right below the folding corner 12, an adapter group 8 is arranged on the inner corner inside of the middle frame connector 10, a branch adapter 9 is further arranged below the longitudinal beam front body 13 of the adapter group 8, and the adapter group 8 is connected with the lower portion of the left end of the front cross beam and the lower portion of the front end of the left longitudinal beam; the right front support bracket is connected with the lower part of the right end of the front cross beam and the lower part of the front end of the right longitudinal beam; the branch adapter is connected with the lower part of the left end of the rear cross beam and the lower part of the rear end of the left longitudinal beam, and the right lower swing arm support is connected with the lower part of the right end of the rear cross beam and the lower part of the rear end of the right longitudinal beam;
the left connecting bracket is connected between the adapter group 8 and the branch adapter; the right connecting bracket 19 is connected between the right front support bracket and the right lower swing arm bracket.
Preferably, the adapter group 8 includes a left front support and a left front support rear plate connected to the left front support, the front end of the left connecting bracket and the left end of the front cross beam are both connected to the left front support, and the front end of the left connecting bracket, the left end of the front cross beam and the front end of the left longitudinal beam are all connected to the left front support rear plate;
the right front support bracket comprises a right front support and a right front support rear plate, the front end of the right connecting bracket 19 is connected with the right end of the front cross beam, the front end of the right connecting bracket 19, the right end of the front cross beam and the front end of the right longitudinal beam are connected with the right front support rear plate.
Preferably, the branch adapter comprises a left lower swing arm and a left lower swing arm rear plate connected with the left lower swing arm, the rear end of the left connecting support and the left end of the rear cross beam are connected with the left lower swing arm, and the left longitudinal beam is connected with the left lower swing arm rear plate;
the right lower swing arm support comprises a right lower swing arm and a right lower swing arm rear plate connected with the right lower swing arm, the rear end of the right connecting support 19 and the right end of the rear cross beam are connected with the right lower swing arm, and the right longitudinal beam is connected with the right lower swing arm rear plate.
Preferably, the front end of the left lower swing arm is provided with a first flanging used for connecting the rear end of the left connecting support, and the front end of the right lower swing arm is provided with a second flanging used for connecting the rear end of the left connecting support.
Preferably, the rear end of the left connecting bracket is welded on the first flanging; the rear end of the right connecting bracket 19 is welded to the second flange.
Preferably, the front cross beam, the left longitudinal beam and the right longitudinal beam are all of tubular beam structures, and the rear cross beam is a cast molding piece.
Preferably, the cross sections of the middle parts of the front cross beam, the left longitudinal beam and the right longitudinal beam are circular; the cross sections of the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are flat.
Preferably, the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are provided with mounting holes; the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are connected with the vehicle body through bushing sleeves or bushings penetrating through the mounting holes.
Preferably, the left and right connecting brackets 19 have a U-shaped or V-shaped cross section.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A cast rear auxiliary frame with asymmetric upper and lower cross beams comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam which are integrally combined into a trapezoid; the method is characterized in that: the butt joint device is characterized in that butt joint barrels are arranged on the head ends of the left longitudinal beam and the right longitudinal beam inwards along the transverse axis, a front cross beam is transversely connected between the butt joint barrels, a lower butt joint barrel is arranged on the tail ends of the left longitudinal beam and the right longitudinal beam inwards along the transverse axis, a rear cross beam is transversely connected between the lower butt joint barrels, symmetrical structures of the left longitudinal beam and the right longitudinal beam are provided with sleeve lining goat corners outside the butt joint barrels, a dog-ear corner is arranged below the sleeve lining goat corners, a longitudinal beam forebody is extended and cast from the dog-ear corner, a middle frame connector is arranged right below the dog-ear corner, a connector group is arranged on the inner side of the middle frame connector in an inner corner crossing manner, a branch adapter is further arranged below the longitudinal beam forebody in the adapter group, and the left end lower portion of the front cross beam and the front end lower portion of the left longitudinal beam are connected with the adapter group; the right front support bracket is connected with the lower part of the right end of the front cross beam and the lower part of the front end of the right longitudinal beam; the branch adapter is connected with the lower part of the left end of the rear cross beam and the lower part of the rear end of the left longitudinal beam, and the right lower swing arm support is connected with the lower part of the right end of the rear cross beam and the lower part of the rear end of the right longitudinal beam;
the left connecting bracket is connected between the adapter group and the branch adapter; the right connecting bracket is connected between the right front supporting bracket and the right lower swing arm bracket.
2. The cast rear subframe for an asymmetric upper and lower cross member as claimed in claim 1, wherein: the adapter group comprises a left front support and a left front support rear plate connected with the left front support, the front end of the left connecting bracket and the left end of the front cross beam are connected with the left front support, and the front end of the left connecting bracket, the left end of the front cross beam and the front end of the left longitudinal beam are connected with the left front support rear plate; the front right support frame comprises a front right support and a front right support rear plate connected with the front right support, the front end of the right connecting frame is connected with the front right support and the front right support rear plate, the front end of the right connecting frame and the right end of the front cross beam are connected with the front right support, and the front end of the right connecting frame, the right end of the front cross beam and the front end of the right longitudinal beam are connected with the front right support rear plate.
3. The cast rear subframe for an asymmetric upper and lower cross member as claimed in claim 1, wherein: the front cross beam, the left longitudinal beam and the right longitudinal beam are of tubular beam structures, and the rear cross beam is a casting forming part.
4. The cast rear subframe for an asymmetric upper and lower cross member as claimed in claim 1, wherein: the cross sections of the middle parts of the front cross beam, the left longitudinal beam and the right longitudinal beam are circular; the cross sections of the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are flat.
5. The cast rear subframe for an asymmetric upper and lower cross member as claimed in claim 1, wherein: mounting holes are formed in the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam; the rear end of the left longitudinal beam, the rear end of the right longitudinal beam and the left end and the right end of the front cross beam are connected with the vehicle body through bushing sleeves or bushings penetrating through the mounting holes.
6. The cast rear subframe for an asymmetric upper and lower cross member as claimed in claim 1, wherein: the cross sections of the left connecting support and the right connecting support are U-shaped or V-shaped.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235304 | 2020-11-09 | ||
| CN2020112353048 | 2020-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114013509A true CN114013509A (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111322052.7A Pending CN114013509A (en) | 2020-11-09 | 2021-11-09 | Casting type rear auxiliary frame of asymmetric upper and lower cross beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114013509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230331306A1 (en) * | 2020-10-05 | 2023-10-19 | Bayerische Motoren Werke Aktiengesellschaft | Chassis Subframe of a Two-Track Vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382470A (en) * | 2018-04-24 | 2018-08-10 | 北京新能源汽车股份有限公司 | Suspension for vehicle and vehicle with same |
| CN209553304U (en) * | 2018-11-13 | 2019-10-29 | 万向钱潮股份有限公司 | A kind of frame subframe |
| CN210526646U (en) * | 2019-06-28 | 2020-05-15 | 广州汽车集团股份有限公司 | Rear auxiliary frame and automobile |
| CN111216795A (en) * | 2020-03-08 | 2020-06-02 | 麦格纳卫蓝新能源汽车技术(镇江)有限公司 | Novel aluminum full-frame type rear auxiliary frame |
-
2021
- 2021-11-09 CN CN202111322052.7A patent/CN114013509A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382470A (en) * | 2018-04-24 | 2018-08-10 | 北京新能源汽车股份有限公司 | Suspension for vehicle and vehicle with same |
| CN209553304U (en) * | 2018-11-13 | 2019-10-29 | 万向钱潮股份有限公司 | A kind of frame subframe |
| CN210526646U (en) * | 2019-06-28 | 2020-05-15 | 广州汽车集团股份有限公司 | Rear auxiliary frame and automobile |
| CN111216795A (en) * | 2020-03-08 | 2020-06-02 | 麦格纳卫蓝新能源汽车技术(镇江)有限公司 | Novel aluminum full-frame type rear auxiliary frame |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230331306A1 (en) * | 2020-10-05 | 2023-10-19 | Bayerische Motoren Werke Aktiengesellschaft | Chassis Subframe of a Two-Track Vehicle |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220406 Address after: 315336 No. 598, Binhai 6th Road, Hangzhou Bay New Area, Cixi City, Ningbo City, Zhejiang Province Applicant after: NINGBO TUOPU AUTOMOBILE ELECTRONIC CO.,LTD. Address before: 321200 No. 36 Mudan South Road, Baihuashan Industrial Zone, Wuyi County, Jinhua City, Zhejiang Province Applicant before: ZHEJIANG TUOWEI AUTO PART CO.,LTD. |
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| TA01 | Transfer of patent application right | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |