CN111231640A - Engine compartment large support reinforcing structure - Google Patents
Engine compartment large support reinforcing structure Download PDFInfo
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- CN111231640A CN111231640A CN202010245825.5A CN202010245825A CN111231640A CN 111231640 A CN111231640 A CN 111231640A CN 202010245825 A CN202010245825 A CN 202010245825A CN 111231640 A CN111231640 A CN 111231640A
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- boss
- large support
- engine room
- reinforcing structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/082—Engine compartments
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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 discloses a large support reinforcing structure of an engine room, which comprises a left longitudinal beam, a right longitudinal beam, a rear cross beam, a front cross beam and a reinforcing piece, wherein the front end and the rear end of the left longitudinal beam are respectively connected with the left end of the front cross beam and the left end of the rear cross beam, the front end and the rear end of the right longitudinal beam are respectively connected with the middle part of the front cross beam and the middle part of the rear cross beam, and the left end and the right end of the reinforcing piece are respectively connected with the middle part of the left longitudinal beam and the middle part of the right longitudinal beam. The engine room large support reinforcing structure provided by the invention can improve the bending resistance of the engine room large support and the overall strength of the engine room large support, so that the strength of the engine room large support can still meet the strength requirement after a front suspension of an engine suspension system is cancelled, abnormal vehicle sound or abnormal vehicle power in the forming process is prevented, the safety performance of an automobile is improved, the suspension system can be optimized, and the purposes of reducing the cost and reducing the weight of the whole automobile are achieved.
Description
Technical Field
The invention relates to the technical field of automobile bodies, in particular to a reinforcing structure for a large support of an engine compartment.
Background
The traditional electric drive system of the new energy automobile is connected with an automobile body through the large engine room support and the four-point suspension, and the large engine room support has enough strength and rigidity to ensure the safe running of the whole automobile. The whole vehicle weight has great influence on the endurance of the new energy vehicle, and a four-point suspension system can be changed into a three-point suspension system for the light weight design of the whole vehicle and the cost control of the suspension system. The suspension system of four-point suspension comprises front suspension, rear suspension, left suspension and right suspension, the engine compartment large support is connected with the electric drive system, the left suspension and the right suspension are respectively installed on the left side and the right side of the engine compartment large support, the front suspension and the rear suspension are installed on a shell of the electric drive system, and the four suspensions support the whole electric drive system. After the front suspension is cancelled, the four-point suspension system is changed into a three-point suspension system, the stress at the welding seam of the left cross beam and the longitudinal beam exceeds the tensile strength of the material through finite element analysis, the strength of the whole engine compartment large support cannot meet the requirement, abnormal vehicle sound or abnormal vehicle power can be caused in the driving process of the vehicle, the driving safety is directly influenced, and therefore the structure of the engine compartment large support must be optimized.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provide a reinforcing structure for a large engine compartment bracket, which can improve the bending resistance of the large engine compartment bracket and the overall strength of the large engine compartment bracket, so that the strength of the large engine compartment bracket can still meet the strength requirement after a front suspension of an engine suspension system is cancelled, thereby preventing abnormal vehicle sound or abnormal vehicle power in the formation process, and improving the safety performance of an automobile, so that the suspension system can be optimized, and the purposes of reducing the cost and reducing the weight of the whole automobile are achieved.
The engine compartment large support reinforcing structure comprises a left longitudinal beam, a right longitudinal beam, a rear cross beam, a front cross beam and a reinforcing piece, wherein the front end and the rear end of the left longitudinal beam are respectively connected with the left end of the front cross beam and the left end of the rear cross beam, the front end and the rear end of the right longitudinal beam are respectively connected with the middle part of the front cross beam and the middle part of the rear cross beam, and the left end and the right end of the reinforcing piece are respectively connected with the middle part of the left longitudinal beam and the middle part of the right longitudinal beam.
Further, the reinforcement includes left overlap joint portion, middle part boss and right overlap joint portion, left side overlap joint portion with right overlap joint portion sets up respectively both ends about the boss of middle part, the boss of middle part is upwards protruding.
Furthermore, both sides all are provided with around the boss of middle part and strengthen heavy platform, strengthen heavy platform undercut.
Furthermore, strengthen sinking the platform and include bending-resistant cab apron and sink the platform bottom plate, sink the platform bottom plate and be on a parallel with the middle part boss and be located the below of middle part boss, bending-resistant cab apron is located sink the platform bottom plate with between the boss.
Furthermore, the reinforcing sinking platform positioned on the lower side of the middle boss is provided with a support lug, the support lug is perpendicular to the sinking platform bottom plate and positioned below the sinking platform bottom plate, and the support lug is provided with a wire harness through hole for passing a wire harness.
Furthermore, the reinforcing part is formed by integral stamping, a first corner plate is arranged at the intersection of the middle boss, the reinforcing sinking platform and the left lap joint part, the first corner plate is a triangular plate, and first transition chamfers are arranged among three edges of the first corner plate, the middle boss, the reinforcing sinking platform and the left lap joint part respectively; the middle part boss strengthen sinking the platform and the intersection of right side overlap joint portion is provided with the second corner board, the second corner board is the triangle-shaped board, the three limit of first corner board respectively with the middle part boss strengthen sinking the platform and be provided with the second transition chamfer between the right side overlap joint portion.
Further, a third transition chamfer is arranged between the middle boss and the left lap joint part, and a fourth transition chamfer is arranged between the middle boss and the right lap joint part.
Furthermore, a plurality of lightening holes are formed in the middle boss.
Furthermore, two yielding grooves for yielding the left suspension mounting bolt are arranged on the left lap joint part.
Further, be provided with a plurality of plug weld holes on left overlap joint portion and the right overlap joint portion respectively.
The invention has the beneficial effects that: according to the engine compartment large support reinforcing structure disclosed by the invention, the reinforcing part is arranged between the left longitudinal beam and the right longitudinal beam, so that the bending resistance of the engine compartment large support is improved, the overall strength of the engine compartment large support is improved, the strength of the engine compartment large support can still meet the strength requirement after the front suspension of an engine suspension system is cancelled, the abnormal sound of a vehicle or the abnormal power of the vehicle in the forming process is prevented, the safety performance of the automobile is improved, and the suspension system can be optimized. After the suspension system is optimized to be three-point suspension, because the reinforcing part is an independent sheet metal part, the structure is simple, and the weight and the processing cost are far lower than those of the front suspension, the purposes of reducing the cost and the weight of the whole vehicle can be realized, and the suspension system is suitable for large-scale application. In addition, the reinforcing part is arranged at the gap between the left longitudinal beam and the right longitudinal beam, so that the reinforcing part does not interfere with an electric drive system, the structure of the whole power system can be very compact, the bending resistance of the large engine cabin bracket is improved, and the vibration of the power system can be reduced.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic assembled structural view of the suspension system and electric drive system of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a front view of the present invention;
FIG. 6 is a first schematic structural diagram of the present invention;
fig. 7 is a second structural schematic diagram of the present invention.
Description of reference numerals: 1-left longitudinal beam, 2-right longitudinal beam, 3-rear transverse beam, 4-front transverse beam, 5-reinforcing piece, 6-left bridging part, 7-middle boss, 8-right bridging part, 9-bending-resistant transition plate, 10-sinking platform bottom plate, 11-lug, 12-first corner plate, 13-first transition chamfer, 14-second corner plate, 15-second transition chamfer, 16-third transition chamfer, 17-fourth transition chamfer, 18-lightening hole, 19-abdicating groove, 20-plug welding hole, 21-first welding line, 22-second welding line, 23-right suspension, 24-left suspension, 25-rear suspension and 26-electric drive system.
Detailed Description
As shown in fig. 1 to 3, the reinforcing structure for the engine compartment large support in the present embodiment includes a left longitudinal beam 1, a right longitudinal beam 2, a rear cross beam 3, a front cross beam 4, and a reinforcing member 5, where front and rear ends of the left longitudinal beam 1 are respectively connected to a left end of the front cross beam 4 and a left end of the rear cross beam 3, front and rear ends of the right longitudinal beam 2 are respectively connected to a middle of the front cross beam 4 and a middle of the rear cross beam 3, and left and right ends of the reinforcing member 5 are respectively connected to a middle of the left longitudinal beam 1 and a middle of the right longitudinal beam 2. The suspension system comprises a left suspension 24, a rear suspension 25 and a right suspension 23, the left suspension 24 is connected with the left longitudinal beam 1, the front end and the rear end of the right suspension 23 are respectively connected with the right ends of the front cross beam 4 and the rear cross beam 3, the rear suspension 25 is connected with the shell of the electric drive system 26, the front end and the rear end of the electric drive system 26 are respectively connected with the front cross beam 4 and the rear cross beam 3, the front suspension connected with the shell of the electric drive system 26 is not arranged, the external load borne by the engine compartment large support is increased, the stress at the welding seam of the left cross beam and the longitudinal beam exceeds the tensile strength of a material through finite element analysis, therefore, the bending resistance of the engine compartment large support can be improved by arranging a reinforcing member 5 between the left longitudinal beam 1 and the right longitudinal beam 2, the overall strength of the engine compartment large support is improved, and the strength of the engine compartment large support can still meet the strength requirement after the front suspension of, the abnormal sound of the vehicle or the abnormal power of the vehicle can be prevented in the forming process, the safety performance of the automobile is improved, and therefore the suspension system can be optimized. After the suspension system is optimized to be three-point suspension, the reinforcing part 5 is an independent sheet metal part, the structure is simple, and the weight and the processing cost are far lower than those of the front suspension, so that the purposes of reducing the cost and the weight of the whole vehicle can be realized, and the suspension system is suitable for large-scale application. In addition, the reinforcing part 5 is arranged at the gap between the left longitudinal beam 1 and the right longitudinal beam 2, so that the reinforcing part does not interfere with the electric drive system 26, the structure of the whole power system can be compact, the bending resistance of the large bracket of the engine cabin is improved, and the vibration of the power system can be reduced.
In this embodiment, as shown in fig. 1 to 7, the reinforcement 5 includes a left overlapping portion 6, a middle boss 7, and a right overlapping portion 8, the left overlapping portion 6 and the right overlapping portion 8 are respectively disposed at the left and right ends of the middle boss 7, and the middle boss 7 protrudes upward. Left overlap joint portion 6 and 1 overlap joint of left longeron, right overlap joint portion 8 and 2 overlap joints of right longeron, and the overlap joint is face contact, and joint strength is high and reduce the effectual of vibration, and middle part boss 7 can increase the bending resistance of reinforcement 5.
In this embodiment, as shown in fig. 4 to 7, the front and rear sides of the middle boss 7 are provided with reinforced sinking platforms, the reinforced sinking platforms are recessed downward, each reinforced sinking platform includes an anti-bending transition plate 9 and a sinking platform bottom plate 10, the sinking platform bottom plate 10 is parallel to the middle boss 7 and is located below the middle boss 7, and the anti-bending transition plate 9 is located between the sinking platform bottom plate 10 and the middle boss 7. The bending-resistant transition plate 9 is the most important part for increasing the bending resistance, the sinking platform bottom plate 10 is positioned below the middle boss 7 and can increase the area of the bending-resistant transition plate 9, meanwhile, the middle boss 7, the bending-resistant transition plate 9 and the sinking platform bottom plate 10 form a continuous bending shape, and the joints of the middle boss 7, the bending-resistant transition plate 9 and the sinking platform bottom plate 10 are all rounded off, so that the bending resistance of the middle boss 7 can be further increased.
In this embodiment, as shown in fig. 4 to 7, a support lug 11 is disposed on the reinforcing sinking platform located below the middle boss 7, the support lug 11 is perpendicular to the sinking platform bottom plate 10 and located below the sinking platform bottom plate 10, and a harness through hole for passing a harness is disposed on the support lug 11. The lugs 11 are positioned so as to avoid stress concentration areas and do not adversely affect the strength of the reinforcement 5.
In this embodiment, as shown in fig. 4 to 7, the reinforcing member 5 is formed by integral punching, a first corner plate 12 is disposed at an intersection of the middle boss 7, the reinforcing sinking platform and the left lapping part 6, the first corner plate 12 is a triangular plate, and first transition chamfers 13 are disposed between three edges of the first corner plate 12 and the middle boss 7, the reinforcing sinking platform and the left lapping part 6 respectively; middle part boss 7 strengthen heavy platform and the intersection of right side overlap joint portion 8 is provided with second corner board 14, second corner board 14 is the triangle-shaped board, first corner board 12 three limit respectively with middle part boss 7 strengthen heavy platform and be provided with second transition chamfer 15 between the right side overlap joint portion 8. The first corner plate 12 and the second corner plate 14 can realize plane transition at the intersection, and the first transition chamfer 13 and the second transition chamfer 15 can improve the stress state and improve the strength.
In this embodiment, as shown in fig. 4 to 7, a third transition chamfer 16 is provided between the middle boss 7 and the left overlapping part 6, and a fourth transition chamfer 17 is provided between the middle boss 7 and the right overlapping part 8. The third transition chamfer 16 and the fourth transition chamfer 17 can improve the stress state and improve the strength of the middle boss 7.
In the present embodiment, as shown in fig. 4 to 7, a plurality of lightening holes 18 are provided on the middle boss 7. The bending-resistant transition plate 9 is the most important part for increasing the bending resistance, and the plate body of the middle boss 7 is subjected to smaller stress, so a plurality of lightening holes 18 can be arranged on the middle boss 7, and the lightening holes 18 can reduce the weight of the reinforcing piece 5 and reduce the cost of the reinforcing piece 5.
In this embodiment, as shown in fig. 4 to 7, two avoidance grooves 19 for avoiding the left suspension mounting bolt are provided on the left overlapping part 6. Left overlap joint portion 6 is adjacent with left suspension mounting hole, is provided with the groove of stepping down 19 in the position that corresponds left suspension mounting hole, can avoid taking place to interfere with left suspension mounting bolt, and this kind of design makes the structure compacter simultaneously.
In the present embodiment, as shown in fig. 4 to 7, a plurality of plug welding holes 20 are respectively formed on the left overlapping part 6 and the right overlapping part 8. Be provided with 5 plug weld holes 20 on left overlap joint portion 6 and the right overlap joint portion 8 respectively, be provided with first welding seam 21 simultaneously strengthening the left end of sinking the platform, be provided with second welding seam 22 between right overlap joint portion 8 and the right-hand member of strengthening the platform, and because both sides all are provided with around middle part boss 7 and strengthen the platform that sinks, so reinforcement 5 is with total 14 tie points.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a big support additional strengthening of engine cabin which characterized in that: including left longeron (1), right longeron (2), rear frame member (3), front frame member (4) and reinforcement (5), both ends respectively with the left end of front frame member (4) with the left end of rear frame member (3) is connected around left side longeron (1), both ends respectively with the middle part of front frame member (4) with the middle part of rear frame member (3) is connected around right side longeron (2), both ends respectively with the middle part of left side longeron (1) with the middle part of right side longeron (2) is connected about reinforcement (5).
2. The engine room large support reinforcing structure according to claim 1, wherein: the reinforcing piece (5) comprises a left overlapping part (6), a middle boss (7) and a right overlapping part (8), the left overlapping part (6) and the right overlapping part (8) are respectively arranged at the left end and the right end of the middle boss (7), and the middle boss (7) is upwards protruded.
3. The engine room large support reinforcing structure according to claim 2, wherein: both sides all are provided with around middle part boss (7) and strengthen heavy platform, strengthen heavy platform undercut.
4. The engine room large support reinforcing structure according to claim 3, wherein: the reinforced sinking platform comprises a bending-resistant transition plate (9) and a sinking platform bottom plate (10), the sinking platform bottom plate (10) is parallel to the middle boss (7) and is positioned below the middle boss (7), and the bending-resistant transition plate (9) is positioned between the sinking platform bottom plate (10) and the middle boss (7).
5. The engine room large support reinforcing structure according to claim 4, wherein: the reinforcing and sinking platform positioned on the lower side of the middle boss (7) is provided with a support lug (11), the support lug (11) is perpendicular to the sinking platform bottom plate (10) and positioned below the sinking platform bottom plate (10), and the support lug (11) is provided with a wire harness through hole for passing a wire harness.
6. The engine room large support reinforcing structure according to claim 5, wherein: the reinforcing piece (5) is formed by integral stamping, a first corner plate (12) is arranged at the intersection of the middle boss (7), the reinforcing sinking platform and the left lapping part (6), the first corner plate (12) is a triangular plate, and first transition chamfers (13) are arranged between three edges of the first corner plate (12) and the middle boss (7), the reinforcing sinking platform and the left lapping part (6) respectively; middle part boss (7) strengthen heavy platform and the intersection of right side overlap joint portion (8) is provided with second corner board (14), second corner board (14) are the triangle-shaped board, the three limit of first corner board (12) respectively with middle part boss (7) strengthen heavy platform and be provided with second transition chamfer (15) between right side overlap joint portion (8).
7. The engine room large support reinforcing structure according to claim 6, wherein: the middle boss (7) and the left lap joint part (6) are provided with a third transition chamfer (16), and the middle boss (7) and the right lap joint part (8) are provided with a fourth transition chamfer (17).
8. The engine room large support reinforcing structure according to claim 3, wherein: the middle boss (7) is provided with a plurality of lightening holes (18).
9. The engine room large support reinforcing structure according to claim 2, wherein: and two yielding grooves (19) for yielding the left suspension mounting bolt are arranged on the left overlapping part (6).
10. The engine room large support reinforcing structure according to claim 2, wherein: and a plurality of plug welding holes (20) are respectively arranged on the left lapping part (6) and the right lapping part (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245825.5A CN111231640A (en) | 2020-03-31 | 2020-03-31 | Engine compartment large support reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245825.5A CN111231640A (en) | 2020-03-31 | 2020-03-31 | Engine compartment large support reinforcing structure |
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| Publication Number | Publication Date |
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| CN111231640A true CN111231640A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010245825.5A Pending CN111231640A (en) | 2020-03-31 | 2020-03-31 | Engine compartment large support reinforcing structure |
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| CN (1) | CN111231640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849274A (en) * | 2021-03-31 | 2021-05-28 | 重庆长安汽车股份有限公司 | Frame beam of vehicle body engine room |
| CN115649098A (en) * | 2022-11-30 | 2023-01-31 | 重庆长安汽车股份有限公司 | Vehicle body system for improving small offset collision performance and vehicle |
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| CN115649098A (en) * | 2022-11-30 | 2023-01-31 | 重庆长安汽车股份有限公司 | Vehicle body system for improving small offset collision performance and vehicle |
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