CN114572311A - Rear suspension beam assembly adapted to rear-drive double-motor double-fork-arm suspension of rear steering gear - Google Patents
Rear suspension beam assembly adapted to rear-drive double-motor double-fork-arm suspension of rear steering gear Download PDFInfo
- Publication number
- CN114572311A CN114572311A CN202210305703.XA CN202210305703A CN114572311A CN 114572311 A CN114572311 A CN 114572311A CN 202210305703 A CN202210305703 A CN 202210305703A CN 114572311 A CN114572311 A CN 114572311A
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- Prior art keywords
- cross beam
- suspension
- double
- steering gear
- arm
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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
- B62D21/11—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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- 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
- B62D21/09—Means for mounting load bearing surfaces
Abstract
The invention discloses a rear suspension cross beam assembly of a rear driving double-motor double-fork-arm suspension adaptive to a rear steering gear, wherein a front cross beam is a main bearing beam, the upper sides of two ends of the front cross beam are fixedly welded with a longitudinal beam of a frame, the lower sides of the two ends of the front cross beam are connected with a lower swing arm front mounting point of the double-fork-arm rear suspension through bolts, the rear steering gear is mounted on the front side of the middle part, and the two front suspensions of rear driving double motors are mounted on the rear side of the middle part; the rear cross beam is a secondary bearing beam, the upper sides of two ends of the rear cross beam are in bolted connection with a rear cross beam mounting bracket, the lower sides of two ends of the rear cross beam are in bolted connection with a lower swing arm rear mounting point of the double-fork arm rear suspension, the middle part of the rear cross beam is provided with two rear suspensions of the rear drive double motors, the rear side of the rear cross beam is provided with a transverse stabilizer bar of the double-fork arm rear suspension, and the upper part of the rear cross beam mounting bracket is welded and fixed with the frame longitudinal beam; the lower sides of the two ends of the front cross beam are connected with the lower sides of the two ends of the rear cross beam through connecting pull rods to form a frame structure. The invention meets the carrying requirements of the rear steering gear, the rear driving double motors and the double-fork arm rear suspension, has large space occupation and improves the NVH performance.
Description
Technical Field
The invention belongs to the field of automobile frame structures, and particularly relates to a rear suspension cross beam assembly adaptive to a rear steering gear rear drive double-motor double-fork-arm suspension.
Background
How to ensure the strength, NVH (Noise, Vibration and Harshness), durability and other performances of the frame on the premise of ensuring the passenger compartment space and the suspension carrying requirements is a key and difficult point in the frame design. The rear suspension of the traditional cross-country vehicle mostly adopts a four-link type non-independent suspension, so that the occupied space is small, and the smoothness and the comfort are poor; in some non-load-bearing automobiles, the rear suspension is a double-fork-arm rear suspension, an auxiliary frame structure is adopted and is hard connected with a frame longitudinal beam, the auxiliary frame is matched with a fuel vehicle rear speed reducer, and the rear speed reducer occupies a small space compared with a rear driving motor, so that the structure is difficult to be suitable for a non-load-bearing new energy automobile carrying the rear driving motor; some bear formula new energy automobile, back suspension are the independent suspension of multi-link formula, carry on back driving motor, adopt sub vehicle frame structure, with automobile body flexible coupling, this sub vehicle frame structure part divides a lot, the structure is complicated, the welding precision is difficult for guaranteeing, mainly used motorcycle type lighter, the non-formula cross country vehicle that bears road conditions of traveling is abominable, the difficult durable, the fatigue performance of non-formula cross country vehicle that satisfies of bearing of this structure.
Disclosure of Invention
The invention aims to provide a rear suspension cross beam assembly adaptive to a rear steering gear rear drive double-motor double-fork-arm suspension, which meets the carrying requirements of a rear steering gear, a rear drive double-motor double-fork-arm rear suspension, has large space occupation, strong bearing capacity and good comfort, and improves the NVH performance.
The technical scheme adopted by the invention is as follows:
a rear suspension beam assembly adaptive to a rear steering gear rear drive double-motor double-fork-arm suspension comprises a front beam, a rear beam, a connecting pull rod and a rear beam mounting bracket; the front cross beam is a main bearing beam, the upper sides of two ends of the front cross beam are welded and fixed with the longitudinal beam of the frame, the lower sides of the two ends of the front cross beam are connected with the lower swing arm front mounting point of the double-fork arm rear suspension through bolts, the rear steering gear is mounted on the front side of the middle part of the front cross beam, and the rear driving double-motor front suspension is mounted on the rear side of the middle part of the rear cross beam; the rear cross beam is a secondary bearing beam, the upper sides of two ends of the rear cross beam are in bolted connection with a rear cross beam mounting bracket, the lower sides of two ends of the rear cross beam are in bolted connection with a rear mounting point of a lower swing arm of the double-fork-arm rear suspension, the middle part of the rear cross beam is provided with a rear drive double-motor rear suspension, the rear side of the rear cross beam is provided with a transverse stabilizer bar of the double-fork-arm rear suspension, and the upper part of the rear cross beam mounting bracket is welded and fixed with the frame longitudinal beam; the lower sides of the two ends of the front cross beam are connected with the lower sides of the two ends of the rear cross beam through connecting pull rods to form a frame structure.
Furthermore, the front cross beam adopts a front and rear plate stamping and welding structure, a sleeve is added in a mounting area of a rear steering motor and a rear driving motor front suspension to improve rigidity, strength and torsion resistance, and a reinforcing plate and a reinforcing rib are added in a mounting area of a lower swing arm front mounting point of a double-fork arm rear suspension to improve strength.
Furthermore, the rear cross beam is of an aluminum alloy stamping structure and is provided with a hollow part and a rib plate.
Furthermore, the rear cross beam is of a cast aluminum structure and is provided with hollows and rib plates.
Furthermore, the front connecting point of the connecting pull rod is close to the longitudinal middle shaft of the vehicle body relative to the rear connecting point of the connecting pull rod, the front mounting point of the lower swing arm is far away from the longitudinal middle shaft of the vehicle body relative to the front connecting point of the connecting pull rod, and the rear mounting point of the lower swing arm is close to the longitudinal middle shaft of the vehicle body relative to the rear connecting point of the connecting pull rod.
Further, the front beam is saddle-shaped.
The invention has the beneficial effects that:
this rear suspension beam assembly has satisfied the carry-on demand of rear steering gear, back drive bi-motor, two fork arm rear suspensions simultaneously, chooses for use two fork arm formula independent suspensions, and the space occupation volume is big, the travelling comfort is good, and front beam, rear beam and connection pull rod form frame construction, have improved the NVH performance of lower swing arm front and back mounting point.
Drawings
FIG. 1 is a schematic illustration of a rear suspension cross member assembly of an embodiment of the present invention adapted rear steering gear rear drive dual motor dual yoke suspension.
FIG. 2 is a schematic mounting diagram of a rear suspension cross beam assembly of a rear-drive dual-motor dual-yoke suspension adapted to a rear steering gear in an embodiment of the present invention.
In the figure: 1-a front cross beam; 2-rear cross beam; 3-connecting a pull rod; 4-mounting a bracket on the rear cross beam; 5-bolt; 6-rear steering gear; 7-rear driving double motors; 8-lower swing arm; 9-a stabilizer bar; 10-frame rail.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and fig. 2, a rear suspension beam assembly adapted to a rear steering gear rear drive double-motor double-wishbone suspension comprises a front beam 1, a rear beam 2, a connecting pull rod 3 and a rear beam mounting bracket 4; the front cross beam 1 is a main bearing beam, the upper sides of two ends of the front cross beam 1 are welded and fixed with the frame longitudinal beam 10, the lower sides of the two ends are connected with front mounting point bolts 5 of a lower swing arm 8 of the double-fork-arm rear suspension, a rear steering gear 6 is arranged on the front side of the middle part, and two front suspensions of a rear driving double motor 7 are arranged on the rear side of the middle part; the rear cross beam 2 is a secondary bearing beam, the upper sides of two ends of the rear cross beam 2 are connected with rear cross beam mounting brackets 4 through bolts 5, the lower sides of two ends of the rear cross beam 2 are connected with lower swing arm 8 rear mounting points of the double-fork arm rear suspension through bolts 5, a rear driving double motor 7 and two rear suspensions are arranged in the middle, a transverse stabilizer bar 9 of the double-fork arm rear suspension is arranged on the rear side, and the upper part of the rear cross beam mounting bracket 4 is welded and fixed with a frame longitudinal beam 10; the lower sides of the two ends of the front cross beam 1 are connected with the lower sides of the two ends of the rear cross beam 2 through bolts 5 through connecting pull rods 3 to form a frame structure. This rear suspension beam assembly has satisfied the demand of carrying on of rear steering gear 6, back drive bi-motor 7, two fork arm rear suspension simultaneously, chooses two fork arm formula independent suspension for use, and the space occupation volume is big, the travelling comfort is good, and front beam 1, rear beam 2 and connection pull rod 3 form frame construction, have improved the NVH performance of mounting point around the lower hem arm 8.
As shown in fig. 1, in this embodiment, the front cross member 1 is saddle-shaped, which is beneficial to the force transmission of the front cross member 1 and improves the structural stability.
As shown in fig. 2, in this embodiment, the front connection point of the connecting rod 3 is close to the longitudinal central axis of the vehicle body relative to the rear connection point of the connecting rod 3, the front mounting point of the lower swing arm 8 is far from the longitudinal central axis of the vehicle body relative to the front connection point of the connecting rod 3, the rear mounting point of the lower swing arm 8 is close to the longitudinal central axis of the vehicle body relative to the rear connection point of the connecting rod 3, and the front and rear mounting points of the lower swing arm 8 are crossed with the front and rear connection points of the connecting rod 3 on the same side, so that the stress performance is improved.
Besides the traditional structure, in the embodiment, the front cross beam 1 adopts a front and rear plate stamping and welding structure, a sleeve is added in the mounting area of the front suspension of the rear steering gear 6 and the rear driving double-motor 7 to improve the rigidity, the strength and the torsion resistance, and a reinforcing plate is added in the mounting area of the front mounting point of the lower swing arm 8 of the double-fork arm rear suspension to improve the strength, so that the bearing performance of the front cross beam 1 is ensured.
Besides the traditional structure of the rear cross beam 2, in the embodiment, the rear cross beam 2 can adopt an aluminum alloy stamping structure and is provided with hollows and rib plates, so that the light weight is realized, and the problems of complicated part splitting, difficult molding and poor welding precision are solved; the rear cross beam 2 can also adopt a cast aluminum structure and is provided with hollow parts and rib plates, so that the light weight is realized, and the manufacture is simple.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a rear suspension beam assembly of two motor double wishbone suspensions of steering gear rear drive after adaptation which characterized in that: comprises a front beam, a rear beam, a connecting pull rod and a rear beam mounting bracket; the front cross beam is a main bearing beam, the upper sides of two ends of the front cross beam are welded and fixed with the longitudinal beam of the frame, the lower sides of the two ends of the front cross beam are connected with the lower swing arm front mounting point of the double-fork arm rear suspension through bolts, the rear steering gear is mounted on the front side of the middle part of the front cross beam, and the rear driving double-motor front suspension is mounted on the rear side of the middle part of the rear cross beam; the rear cross beam is a secondary bearing beam, the upper sides of two ends of the rear cross beam are in bolted connection with a rear cross beam mounting bracket, the lower sides of two ends of the rear cross beam are in bolted connection with a rear mounting point of a lower swing arm of the double-fork-arm rear suspension, the middle part of the rear cross beam is provided with a rear drive double-motor rear suspension, the rear side of the rear cross beam is provided with a transverse stabilizer bar of the double-fork-arm rear suspension, and the upper part of the rear cross beam mounting bracket is welded and fixed with the frame longitudinal beam; the lower sides of the two ends of the front cross beam are connected with the lower sides of the two ends of the rear cross beam through connecting pull rods to form a frame structure.
2. The rear suspension cross member assembly of an adaptive rear steering gear rear drive dual motor dual yoke suspension of claim 1 wherein: the front cross beam adopts a front and rear plate stamping and welding structure, a sleeve is added in the mounting area of the rear steering gear and the rear drive double-motor front suspension to improve the rigidity, the strength and the torsion resistance, and a reinforcing plate and a reinforcing rib are added in the mounting area of the lower swing arm front mounting point of the double-fork arm rear suspension to improve the strength.
3. The rear suspension cross member assembly of an adaptive rear steering gear rear drive dual motor dual yoke suspension of claim 1 wherein: the rear cross beam is of an aluminum alloy stamping structure and is provided with a hollow part and a rib plate.
4. The rear suspension cross member assembly of an adaptive rear steering gear rear drive dual motor dual yoke suspension of claim 1 wherein: the rear cross beam is of a cast aluminum structure and is provided with a hollow part and a ribbed plate.
5. The rear suspension cross member assembly of an adaptive rear steering gear rear drive dual motor dual yoke suspension of claim 1 wherein: the front connecting point of the connecting pull rod is close to the longitudinal middle shaft of the vehicle body relative to the rear connecting point of the connecting pull rod, the front mounting point of the lower swing arm is far away from the longitudinal middle shaft of the vehicle body relative to the front connecting point of the connecting pull rod, and the rear mounting point of the lower swing arm is close to the longitudinal middle shaft of the vehicle body relative to the rear connecting point of the connecting pull rod.
6. The rear suspension cross member assembly of an adaptive rear steering gear rear drive dual motor dual yoke suspension of claim 1 wherein: the front beam is saddle-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210305703.XA CN114572311B (en) | 2022-03-25 | 2022-03-25 | Rear suspension beam assembly adapting to rear steering gear rear drive double-motor double-fork arm suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210305703.XA CN114572311B (en) | 2022-03-25 | 2022-03-25 | Rear suspension beam assembly adapting to rear steering gear rear drive double-motor double-fork arm suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114572311A true CN114572311A (en) | 2022-06-03 |
| CN114572311B CN114572311B (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210305703.XA Active CN114572311B (en) | 2022-03-25 | 2022-03-25 | Rear suspension beam assembly adapting to rear steering gear rear drive double-motor double-fork arm suspension |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511096B1 (en) * | 1999-03-06 | 2003-01-28 | Dr. Ing. H.C.F. Porsche Ag | Subframe for a motor vehicle |
| CN110884312A (en) * | 2018-09-11 | 2020-03-17 | 上海汽车集团股份有限公司 | Electric automobile and multi-connecting-rod rear suspension thereof |
| CN211809848U (en) * | 2020-04-10 | 2020-10-30 | 东风小康汽车有限公司重庆分公司 | Extended range type automobile rear auxiliary frame |
| CN212890579U (en) * | 2020-07-29 | 2021-04-06 | 坤泰车辆系统（常州）有限公司 | Highly integrated auxiliary frame and chassis suspension system |
| CN213594371U (en) * | 2020-08-24 | 2021-07-02 | 江苏瑞江车辆系统有限公司 | Auxiliary frame for automobile modular independent suspension |
| CN113650678A (en) * | 2021-09-16 | 2021-11-16 | 奇瑞商用车（安徽）有限公司 | Mounting structure of new forms of energy plantago sub vehicle frame |
-
2022
- 2022-03-25 CN CN202210305703.XA patent/CN114572311B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511096B1 (en) * | 1999-03-06 | 2003-01-28 | Dr. Ing. H.C.F. Porsche Ag | Subframe for a motor vehicle |
| CN110884312A (en) * | 2018-09-11 | 2020-03-17 | 上海汽车集团股份有限公司 | Electric automobile and multi-connecting-rod rear suspension thereof |
| CN211809848U (en) * | 2020-04-10 | 2020-10-30 | 东风小康汽车有限公司重庆分公司 | Extended range type automobile rear auxiliary frame |
| CN212890579U (en) * | 2020-07-29 | 2021-04-06 | 坤泰车辆系统（常州）有限公司 | Highly integrated auxiliary frame and chassis suspension system |
| CN213594371U (en) * | 2020-08-24 | 2021-07-02 | 江苏瑞江车辆系统有限公司 | Auxiliary frame for automobile modular independent suspension |
| CN113650678A (en) * | 2021-09-16 | 2021-11-16 | 奇瑞商用车（安徽）有限公司 | Mounting structure of new forms of energy plantago sub vehicle frame |
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| CN114572311B (en) | 2023-04-25 |
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