CN114572311B - Rear suspension beam assembly adapting to rear steering gear rear drive double-motor double-fork arm suspension - Google Patents
Rear suspension beam assembly adapting to rear steering gear rear drive double-motor double-fork arm suspension Download PDFInfo
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- CN114572311B CN114572311B CN202210305703.XA CN202210305703A CN114572311B CN 114572311 B CN114572311 B CN 114572311B CN 202210305703 A CN202210305703 A CN 202210305703A CN 114572311 B CN114572311 B CN 114572311B
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- cross beam
- suspension
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- fork arm
- motor
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- 239000000725 suspension Substances 0.000 title claims abstract description 69
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- 230000009977 dual effect Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003381 stabilizer Substances 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
- B62D21/11—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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The invention discloses a rear suspension beam assembly of a rear-drive double-fork arm suspension of a rear steering gear, wherein a front beam is a main bearing beam, upper sides of two ends of the front beam are fixedly welded with a frame longitudinal beam, lower sides of the two ends of the front beam are connected with front mounting points of a lower swing arm of the double-fork arm rear suspension through bolts, the rear steering gear is arranged on the front side of the middle part, and two front suspensions of the rear-drive double-motor are arranged on the rear side of the middle part; the rear cross beam is a secondary bearing beam, the upper sides of the two ends of the rear cross beam are connected with rear cross beam mounting brackets through bolts, the lower sides of the two ends of the rear cross beam are connected with rear mounting points of lower swing arms of the double-fork arm rear suspension through bolts, two rear suspensions of a rear driving double motor are arranged in the middle of the rear cross beam, and transverse stabilizing rods of the double-fork arm rear suspension are arranged on the rear side of the rear cross 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 bolts to form a frame structure. The invention meets the carrying requirements of a rear steering gear, a rear driving double motor and a double fork arm rear suspension, has large space occupation and improves NVH performance.
Description
Technical Field
The invention belongs to the field of automobile frame structures, and particularly relates to a rear suspension beam assembly of a rear-drive double-motor double-fork arm suspension adapted to a rear steering gear.
Background
How to ensure the performances of the frame such as strength, NVH (Noise, vibration, harshness, namely noise, vibration and harshness), durability and the like on the premise of ensuring the space of the passenger cabin and the carrying requirement of the suspension is an important point and a difficult point in the design of the frame. The rear suspension of the traditional off-road vehicle mostly adopts four-link type non-independent suspension, so that the occupied space is small, and the smoothness and the comfort are poor; 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 adapted to a rear speed reducer of the fuel vehicle, and the rear speed reducer occupies a small space compared with a rear driving motor, so that the structure is more difficult to be suitable for a non-load type new energy vehicle carrying the rear driving motor; the rear suspension is a multi-link type independent suspension, a rear driving motor is carried, an auxiliary frame structure is adopted and is in flexible connection with a vehicle body, parts of the auxiliary frame structure are more, the structure is complex, welding precision is not easy to guarantee, the auxiliary frame structure is mainly used for lighter vehicle types, a non-bearing type off-road vehicle is poor in driving road condition, and the structure is difficult to meet the durability and fatigue performance of the non-bearing type off-road vehicle.
Disclosure of Invention
The invention aims to provide a rear suspension beam assembly of a rear-drive double-motor double-fork arm suspension adapted to a rear steering gear, which simultaneously meets the carrying requirements of the rear steering gear, the rear-drive double-motor and the double-fork arm rear suspension, has large occupied space, strong bearing capacity and good comfort, and improves NVH performance.
The technical scheme adopted by the invention is as follows:
a rear suspension beam assembly adapting 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 the two ends of the front cross beam are welded and fixed with the frame longitudinal beam, the lower sides of the two ends of the front cross beam are connected with the front mounting point of the lower swing arm of the double-fork arm rear suspension through bolts, the rear steering gear is arranged on the front side of the middle part, and the rear driving double-motor front suspension is arranged on the rear side of the middle part; the rear cross beam is a secondary bearing beam, the upper sides of the two ends of the rear cross beam are connected with rear cross beam mounting brackets through bolts, the lower sides of the two ends of the rear cross beam are connected with rear mounting points of lower swing arms of the double-fork arm rear suspension through bolts, the rear suspension is driven by a rear motor in a middle part, and transverse stabilizing rods of the double-fork arm rear suspension are arranged on the rear side of the rear cross 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 bolts to form a frame structure.
Further, the front cross beam adopts a front plate and rear plate punching press welding structure, a sleeve is added in the installation area of the front suspension of the rear steering motor and the rear driving motor to improve rigidity, strength and torsion resistance, and a reinforcing plate and a reinforcing rib are added in the installation area of the front installation point of the lower swing arm of the double-fork arm rear suspension to improve strength.
Further, the rear cross beam adopts an aluminum alloy stamping structure and is provided with hollowed-out parts and rib plates.
Further, the rear cross beam adopts a cast aluminum structure and is provided with hollowed-out parts and rib plates.
Further, the front connecting point of the connecting pull rod is close to the longitudinal central axis 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 central axis 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 central axis of the vehicle body relative to the rear connecting point of the connecting pull rod.
Further, the front cross member is saddle-shaped.
The beneficial effects of the invention are as follows:
this rear suspension crossbeam assembly has satisfied the carrying on demand of rear steering gear, back drive bi-motor, two yoke rear suspension simultaneously, selects for use two yoke independent suspensions, and space occupation is big, the travelling comfort is good, and front beam, rear beam and connecting rod form frame construction, have improved the NVH performance of mounting point around the lower swing arm.
Drawings
Fig. 1 is a schematic view of a rear suspension cross beam assembly of a rear steering gear rear drive dual motor dual yoke suspension in accordance with an embodiment of the present invention.
Fig. 2 is a schematic mounting diagram of a rear suspension cross beam assembly of a rear steering gear rear drive dual-motor dual-wishbone suspension in an embodiment of the present invention.
In the figure: 1-a front cross beam; 2-a rear cross beam; 3-connecting a pull rod; 4-a rear cross beam mounting bracket; 5-bolts; 6-a rear steering gear; 7-rear driving double motors; 8-lower swing arms; 9-a transverse stabilizer bar; 10-frame rail.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1 and 2, a rear suspension beam assembly for adapting a rear steering gear rear drive double-motor double-fork arm 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 the two ends of the front cross beam 1 are fixedly welded with a frame longitudinal beam 10, the lower sides of the two ends are connected with a front mounting point bolt 5 of a lower swing arm 8 of a 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 the two ends of the rear cross beam 2 are connected with rear cross beam mounting brackets 4 through bolts 5, the lower sides of the two ends of the rear cross beam 2 are connected with rear mounting points of lower swing arms 8 of double-fork arm rear suspensions through bolts 5, two rear suspensions of a rear driving double motor 7 are installed in the middle, transverse stabilizing rods 9 of the double-fork arm rear suspensions are installed on the rear sides of the rear cross beam 2, and the upper parts of the rear cross beam mounting brackets 4 are welded and fixed with frame longitudinal beams 10; the lower sides of the two ends of the front cross beam 1 are connected with bolts 5 of the lower sides of the two ends of the rear cross beam 2 through connecting pull rods 3 to form a frame structure. The rear suspension beam assembly simultaneously meets the carrying requirements of the rear steering gear 6, the rear driving double motor 7 and the double-fork arm rear suspension, the double-fork arm type independent suspension is selected for use, the space occupation is large, the comfort is good, the front beam 1, the rear beam 2 and the connecting pull rod 3 form a frame structure, and the NVH performance of front and rear mounting points of the lower swing arm 8 is improved.
As shown in fig. 1, in this embodiment, the front beam 1 has a saddle shape, which is beneficial to the stress transmission of the front beam 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 connection point of the lower swing arm 8 is far away from the longitudinal central axis of the vehicle body relative to the front connection point of the connecting rod 3, the rear connection 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 connection 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.
In addition to the conventional structure adopted by the front beam 1, in this embodiment, the front beam 1 adopts a front-rear plate punching press welding structure, the sleeve is added in the front suspension mounting area of the rear steering gear 6 and the rear driving dual motor 7 to improve rigidity, strength and torsion resistance, the reinforcing plate is added in the front mounting area of the lower swing arm 8 of the dual-fork arm rear suspension to improve strength, and the bearing performance of the front beam 1 is ensured.
In addition to the traditional structure adopted by the rear cross beam 2, in the embodiment, the rear cross beam 2 can adopt an aluminum alloy stamping structure with hollowed-out parts and rib plates, so that the weight reduction is realized, and the problems of complex parting, difficult molding and poor welding precision are solved; the rear cross beam 2 can also adopt a cast aluminum structure and is provided with hollowed-out parts and rib plates, so that the weight reduction is realized, and the manufacturing is simple.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (5)
1. Rear suspension beam assembly of two yoke suspensions of two motors of steering gear rear drive behind adaptation, its 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 the two ends of the front cross beam are welded and fixed with the frame longitudinal beam, the lower sides of the two ends of the front cross beam are connected with the front mounting point of the lower swing arm of the double-fork arm rear suspension through bolts, the rear steering gear is arranged on the front side of the middle part, and the rear driving double-motor front suspension is arranged on the rear side of the middle part; the rear cross beam is a secondary bearing beam, the upper sides of the two ends of the rear cross beam are connected with rear cross beam mounting brackets through bolts, the lower sides of the two ends of the rear cross beam are connected with rear mounting points of lower swing arms of the double-fork arm rear suspension through bolts, the rear suspension is driven by a rear motor in a middle part, and transverse stabilizing rods of the double-fork arm rear suspension are arranged on the rear side of the rear cross 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 by bolts to form a frame structure;
the front connecting point of the connecting pull rod is close to the longitudinal central axis 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 central axis 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 central axis of the vehicle body relative to the rear connecting point of the connecting pull rod.
2. The rear suspension cross beam assembly of the rear steering rear drive dual motor dual yoke suspension of claim 1, wherein: the front cross beam adopts a front plate and rear plate punching press welding structure, a sleeve is added in the installation area of the front suspension of the rear steering gear and the rear driving double motor to improve rigidity, strength and torsion resistance, and a reinforcing plate and a reinforcing rib are added in the installation area of the front installation point of the lower swing arm of the double-fork arm rear suspension to improve strength.
3. The rear suspension cross beam assembly of the rear steering rear drive dual motor dual yoke suspension of claim 1, wherein: the rear cross beam adopts an aluminum alloy stamping structure and is provided with hollowed-out parts and rib plates.
4. The rear suspension cross beam assembly of the rear steering rear drive dual motor dual yoke suspension of claim 1, wherein: the rear cross beam adopts a cast aluminum structure and is provided with hollowed-out parts and rib plates.
5. The rear suspension cross beam assembly of the rear steering rear drive dual motor dual yoke suspension of claim 1, wherein: the front cross 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 CN114572311A (en) | 2022-06-03 |
| CN114572311B true CN114572311B (en) | 2023-04-25 |
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ID=81776491
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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN114572311B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19909945C1 (en) * | 1999-03-06 | 2000-10-26 | 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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- 2022-03-25 CN CN202210305703.XA patent/CN114572311B/en active Active
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| CN114572311A (en) | 2022-06-03 |
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