CN211809854U - Aluminum alloy longitudinal beam with strength in gradient change - Google Patents
Aluminum alloy longitudinal beam with strength in gradient change Download PDFInfo
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- CN211809854U CN211809854U CN201922103122.4U CN201922103122U CN211809854U CN 211809854 U CN211809854 U CN 211809854U CN 201922103122 U CN201922103122 U CN 201922103122U CN 211809854 U CN211809854 U CN 211809854U
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 40
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to an aluminum alloy longitudinal beam with gradient intensity, which comprises a longitudinal beam body, a first reinforcing part and a second reinforcing part; the longitudinal beam body is an aluminum alloy section, is provided with an upper cavity, a middle cavity and a lower cavity, and is in a shape of a Chinese character 'mu'; the lower part of the middle section of the left side surface of the longitudinal beam body is provided with a first riveting hole and a second riveting hole, and the lower part of the rear section of the left side surface of the longitudinal beam body is provided with a third riveting hole; a fourth riveting hole and a fifth riveting hole are formed in the lower portion of the rear section of the right side face of the longitudinal beam body; the first reinforcing piece is arranged in the lower cavity of the longitudinal beam body and is fixedly connected with the inner walls of the left sides of the middle section and the rear section of the longitudinal beam body; the second reinforcing piece is arranged in the lower cavity of the longitudinal beam body and is fixedly connected with the right inner wall of the rear section of the longitudinal beam body. The utility model can realize the strength change in the radial direction of the longitudinal beam, realize the expected deformation of the automobile in the high-speed frontal collision working condition and avoid the tearing in the deformation process; the passenger compartment can be effectively deformed and absorb energy, and the completeness of the passenger compartment is ensured.
Description
Technical Field
The utility model relates to an automobile body, concretely relates to intensity is gradient change's aluminum alloy longeron.
Background
The high-speed front 100% and 40% offset collision of the automobile are important investigation conditions for evaluating the collision safety of the whole automobile by the C-NCAP. In the collision process, the anti-collision cross beam, the energy absorption boxes and the longitudinal beam are crushed and bent through a specific deformation sequence, and the safety of the passenger compartment structure is ensured while the deformation absorbs the energy.
At present, aluminum alloy is widely applied to lightweight design of electric vehicles. Most of the aluminum parts are mainly extruded sections. The cross section of the extruded section is uniform in the radial direction, so that the overall strength is uniform. The strength is overlarge, and the collision acceleration is overlarge; the strength is too weak, the deformation is violent, and the integrity of the passenger compartment cannot be ensured. During design, the longitudinal beam needs to have different strength changes, the front end has low strength, deformation and energy absorption are realized, and the acceleration is reduced; the strength of the rear end is high, and the integrity of the rear end is guaranteed.
The strength gradient design of the stamping-formed sheet metal structure longitudinal beam is realized by changing the thickness and materials of the inner and outer plates of the longitudinal beam; transverse or longitudinal guide ribs are designed to guide the deformation. The cross section of the traditional aluminum alloy longitudinal beam formed by the extrusion process is in a shape like a Chinese character 'mu'. And the cross sections of all the parts are consistent, and the strength difference of the longitudinal beam in the radial direction is small. However, due to the special properties of the aluminum alloy material, a stamped metal plate structure cannot be adopted. And the aluminum alloy section longitudinal beam has the risk of failure in high-speed collision.
CN 109850018A discloses "a sectional electric automobile front longitudinal beam and its electric automobile". The structure divides the longitudinal beam into three sections: the first section of beam body adopts an aluminum alloy extrusion forming technology, a first embedded body which is integrally formed with the first section of beam body is arranged in the first section of beam body, and the wall thickness of the first section of beam body is not uniform; the second section of beam body adopts an aluminum alloy extrusion forming technology, a second embedded body which is integrally formed with the second section of beam body is arranged in the second section of beam body, and the third section of beam body is connected with the front floor longitudinal beam through a transition connecting beam. This sectional type electric automobile front longitudinal structure adopts the preparation of many cellular aluminum alloy ex-trusions, and processing technology is simple, compromises the axial conquassation and the side direction bending in the car head-on collision process, and the part is easily changed, and cost of maintenance is little, has satisfied crashworthiness, economic nature and lightweight simultaneously. Needless to say, this is an advantageous attempt in the art.
Disclosure of Invention
The utility model aims at providing an aluminum alloy longitudinal beam with gradient intensity, which can realize the intensity change in the radial direction of the longitudinal beam, realize the expected deformation of an automobile in the high-speed frontal collision working condition and avoid the tearing in the deformation process; the passenger compartment can be effectively deformed and absorb energy, and the integrity of the passenger compartment is ensured; and the manufacturability and the economical efficiency are better.
An intensity be gradient change's aluminum alloy longeron, including longeron body, first reinforcement and second reinforcement, characterized by:
the longitudinal beam body is an aluminum alloy section, has consistent cross section thickness, is provided with an upper cavity, a middle cavity and a lower cavity, and is in a shape of a Chinese character 'mu'; a first riveting hole and a second riveting hole are formed in the lower portion of the middle section of the left side face of the longitudinal beam body, and a third riveting hole is formed in the lower portion of the rear section of the left side face of the longitudinal beam body; a fourth riveting hole and a fifth riveting hole are formed in the lower portion of the rear section of the right side face of the longitudinal beam body;
the first reinforcing piece is arranged in the lower cavity of the longitudinal beam body and is fixedly connected with the inner walls of the left sides of the middle section and the rear section of the longitudinal beam body;
the second reinforcing piece is arranged in the lower cavity of the longitudinal beam body and is fixedly connected with the right inner wall of the rear section of the longitudinal beam body.
Furthermore, the cross section of the first reinforcing piece is in a [ -shape, and a first through hole, a second through hole and a third through hole are formed in the vertical surface of the first reinforcing piece; the first via hole, the second via hole and the third via hole are in one-to-one correspondence riveting fixation with the first riveting hole, the second riveting hole and the third riveting hole in the lower portion of the left side face of the longitudinal beam body in sequence.
Furthermore, the cross section of the second reinforcing piece is in a shape like a Chinese character 'ji', and a fourth through hole and a fifth through hole are formed in the vertical surface of the second reinforcing piece; and the fourth via hole and the fifth via hole are in one-to-one correspondence riveting fixation with the fourth riveting hole and the fifth riveting hole in the lower part of the right side face of the longitudinal beam body in sequence.
Further, the first reinforcing piece and the second reinforcing piece are both aluminum alloy sections.
Furthermore, the front end of longeron body and sub vehicle frame installing support are connected, the rear end of longeron body and the well reinforcing crossbeam of preceding wallboard pass through the viscose to be connected, and be connected with engine compartment boundary beam rear section.
The utility model has the advantages of that:
(1) because the first reinforcing part and the second reinforcing part are arranged in the longitudinal beam body, the gradient change of the strength of the longitudinal beam is realized;
(2) by adopting the aluminum alloy longitudinal beam, the longitudinal beam can generate required crushing, bending and deformation in the working condition of high-speed frontal collision of an automobile;
(3) according to different vehicle types, the optimal combination can be obtained by changing the length and the thickness of the internal reinforcement, and the method has a wide application prospect.
Drawings
Fig. 1 is one of isometric views of the present invention;
fig. 2 is a second perspective view of the present invention;
FIG. 3 is a schematic structural view of a first stiffener;
FIG. 4 is a schematic structural view of a second reinforcement member;
fig. 5 is a front view of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5 (stringer body forward section);
FIG. 7 is a cross-sectional view B-B (stringer body mid-section) of FIG. 5;
FIG. 8 is a cross-sectional view C-C of FIG. 5 (trailing beam body aft section);
fig. 9 is a schematic view of the present invention in connection with a subframe, a front wall panel, and an engine compartment.
In the figure:
1-a longitudinal beam body, 11-a first riveting hole, 12-a second riveting hole, 13-a third riveting hole, 14-a fourth riveting hole, and 15-a fifth riveting hole;
2-a first stiffener, 21-a first via, 22-a second via, 23-a third via;
3-a second stiffener, 31-a fourth via, 32-a fifth via;
4, an auxiliary frame mounting bracket;
5-front wall plate;
6, a middle reinforcing beam;
7-rear section of engine compartment boundary beam.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 to 8, an aluminum alloy longitudinal beam with strength changing in a gradient manner is shown, which includes a longitudinal beam body 1, a first reinforcing member 2 and a second reinforcing member 3, and is characterized in that:
the longitudinal beam body 1 is an aluminum alloy section, has consistent cross section thickness, is provided with an upper cavity, a middle cavity and a lower cavity, and is in a shape of a Chinese character 'mu'; a first riveting hole 11 and a second riveting hole 12 are formed in the lower portion of the middle section of the left side face of the longitudinal beam body 1, and a third riveting hole 13 is formed in the lower portion of the rear section of the left side face of the longitudinal beam body 1; a fourth riveting hole 14 and a fifth riveting hole 15 are formed in the lower portion of the rear section of the right side face of the longitudinal beam body 1;
the first reinforcing piece 2 is arranged in the lower cavity of the longitudinal beam body 1 and is fixedly connected with the inner walls of the left sides of the middle section and the rear section of the longitudinal beam body 1;
the second reinforcing piece 3 is arranged in the lower cavity of the longitudinal beam body 1 and is fixedly connected with the right inner wall of the rear section of the longitudinal beam body 1.
The cross section of the first reinforcing piece 2 is in a [ -shape, and a first through hole 21, a second through hole 22 and a third through hole 23 are formed in the vertical surface of the first reinforcing piece; the first via hole 21, the second via hole 22 and the third via hole 23 are riveted and fixed with the first riveting hole 11, the second riveting hole 12 and the third riveting hole 13 on the lower portion of the left side face of the longitudinal beam body 1 in a one-to-one correspondence manner.
The cross section of the second reinforcing part 3 is in a shape like a Chinese character 'ji', and a fourth through hole 31 and a fifth through hole 32 are arranged on the vertical surface of the second reinforcing part; the fourth via hole 31 and the fifth via hole 32 are riveted and fixed with the fourth riveting hole 14 and the fifth riveting hole 15 on the lower part of the right side face of the longitudinal beam body 1 in a one-to-one correspondence manner.
The first reinforcing member 2 and the second reinforcing member 3 are both aluminum alloy sections.
Referring to fig. 9, the front end of the longitudinal beam body 1 is connected with the auxiliary frame mounting bracket 4, and the rear end of the longitudinal beam body 1 is connected with the middle reinforcing cross beam 6 of the front wall plate 5 through glue and connected with the rear section 7 of the side beam of the engine compartment.
The length, the thickness and the section shape of the first reinforcing part and the second reinforcing part riveted in the longitudinal beam body realize the gradient change of the strength of the longitudinal beam. The length and thickness combination of the reinforcing member can be changed according to different vehicle weights, and the expected result is achieved. The production process adopts the existing mature extrusion forming mode, the extrusion process can obviously improve the plasticity of the section bar and has good mechanical property.
The automobile adopts the aluminum alloy longitudinal beam, and can effectively deform and absorb energy under the front high-speed collision working condition. The design requirement on the root of the longitudinal beam is reduced, the intrusion amount of the front wall plate is reduced, and the completeness of the passenger compartment is effectively guaranteed.
According to different vehicle type requirements, the expected longitudinal beam deformation effect can be obtained by changing the thickness and length combination of the reinforcing beam. Can be used as a longitudinal beam assembly of a platform vehicle type.
Claims (5)
1. The utility model provides an intensity is gradient change's aluminum alloy longeron, includes longeron body (1), first reinforcement (2) and second reinforcement (3), characterized by:
the longitudinal beam body (1) is an aluminum alloy section, has consistent cross section thickness, is provided with an upper cavity, a middle cavity and a lower cavity, and is in a shape of a Chinese character 'mu'; a first riveting hole (11) and a second riveting hole (12) are formed in the lower portion of the middle section of the left side face of the longitudinal beam body (1), and a third riveting hole (13) is formed in the lower portion of the rear section of the left side face of the longitudinal beam body (1); a fourth riveting hole (14) and a fifth riveting hole (15) are formed in the lower portion of the rear section of the right side face of the longitudinal beam body (1);
the first reinforcing piece (2) is arranged in the lower cavity of the longitudinal beam body (1) and is fixedly connected with the inner walls of the left sides of the middle section and the rear section of the longitudinal beam body (1);
the second reinforcing piece (3) is arranged in the lower cavity of the longitudinal beam body (1) and is fixedly connected with the right inner wall of the rear section of the longitudinal beam body (1).
2. The aluminum alloy stringer with gradient strength of claim 1, wherein: the cross section of the first reinforcing piece (2) is in a [ -shape, and a first through hole (21), a second through hole (22) and a third through hole (23) are formed in the vertical surface of the first reinforcing piece; the first via hole (21), the second via hole (22) and the third via hole (23) are sequentially in one-to-one correspondence riveting fixation with the first riveting hole (11), the second riveting hole (12) and the third riveting hole (13) in the lower portion of the left side face of the longitudinal beam body (1).
3. The aluminum alloy stringer with gradient strength of claim 1 or 2, wherein: the cross section of the second reinforcing piece (3) is in a shape like a Chinese character 'ji', and a fourth through hole (31) and a fifth through hole (32) are arranged on the vertical surface of the second reinforcing piece; and the fourth via hole (31) and the fifth via hole (32) are riveted and fixed with the fourth riveting hole (14) and the fifth riveting hole (15) on the lower part of the right side surface of the longitudinal beam body (1) in a one-to-one correspondence manner.
4. The aluminum alloy stringer having a gradient in strength of claim 3, wherein: the first reinforcing piece (2) and the second reinforcing piece (3) are both aluminum alloy sections.
5. The aluminum alloy stringer with gradient strength of claim 1 or 2, wherein: the front end of the longitudinal beam body (1) is connected with the auxiliary frame mounting bracket (4), and the rear end of the longitudinal beam body (1) is connected with the middle reinforcing cross beam (6) of the front wall plate (5) through adhesive and connected with the rear section (7) of the side beam of the engine compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922103122.4U CN211809854U (en) | 2019-11-29 | 2019-11-29 | Aluminum alloy longitudinal beam with strength in gradient change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922103122.4U CN211809854U (en) | 2019-11-29 | 2019-11-29 | Aluminum alloy longitudinal beam with strength in gradient change |
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| Publication Number | Publication Date |
|---|---|
| CN211809854U true CN211809854U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922103122.4U Active CN211809854U (en) | 2019-11-29 | 2019-11-29 | Aluminum alloy longitudinal beam with strength in gradient change |
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| Country | Link |
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| CN (1) | CN211809854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107776673A (en) * | 2017-11-27 | 2018-03-09 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of front longitudinal |
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2019
- 2019-11-29 CN CN201922103122.4U patent/CN211809854U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107776673A (en) * | 2017-11-27 | 2018-03-09 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of front longitudinal |
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