CN114103830A - High-strength light-weight structure automobile bottom plate - Google Patents
High-strength light-weight structure automobile bottom plate Download PDFInfo
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- CN114103830A CN114103830A CN202011527133.6A CN202011527133A CN114103830A CN 114103830 A CN114103830 A CN 114103830A CN 202011527133 A CN202011527133 A CN 202011527133A CN 114103830 A CN114103830 A CN 114103830A
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- bottom plate
- high strength
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- hollow
- vehicle floor
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000006261 foam material Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 210000002268 wool Anatomy 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 30
- 230000003014 reinforcing effect Effects 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000003756 stirring Methods 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The present invention provides a high strength lightweight structural automotive floor which can be used on light buses, light trucks, light box cargo and motor homes. The automobile bottom plate is of a hollow plate structure, reinforcing ribs are arranged inside the hollow plate, and the reinforcing ribs are in a criss-cross shape or a step shape or a honeycomb shape or a wave shape. According to the invention, the chassis structure of the vehicle is changed, the original auxiliary beam and carriage bottom structure of a light passenger is replaced by the hollow bottom plate, the gravity center of the whole vehicle is reduced under the condition that the integral strength can meet the integral bearing requirement, the safety system prompts that the height of an upper vehicle body is reduced by about 200mm, the weight of the whole vehicle is reduced by about 200 kg, the manufacturing cost of the whole vehicle is reduced, and the bottom plate is welded by a friction stir welding process, so that the long-term energy consumption can be saved, and the practicability of the device is improved. The inner configuration can be installed on a reserved hole on the bottom plate, a nut of the reserved hole is realized by adopting a press riveting or a pull riveting or a welding process, the whole vehicle has a better mode, and a driver and a passenger feel more comfortable.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to an automobile bottom plate with a high-strength light structure.
Background
The automobile chassis consists of four parts, namely a transmission system, a running system, a steering system and a braking system. The chassis is used for supporting and mounting an automobile engine and parts and assemblies thereof, forming the integral shape of the automobile, receiving the power of the engine, enabling the automobile to move and ensuring normal running, the light passenger car is a passenger car with the car length of more than 3.5 meters and less than 7 meters before 2005, from 2005, the statistical work of the national automobile industry returns to the China automobile industry Association, the automobile industry carries out new vehicle type statistical classification, and the light passenger car is a passenger car with no more than 9 seats according to the new vehicle type statistical classification.
The chassis base plate of the existing light passenger chassis is generally of an all-steel auxiliary beam and carriage bottom structure, and has the advantages of high chassis, heavy weight and higher manufacturing energy consumption.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-strength light-weight structure automobile bottom plate, which solves the problems of high chassis, heavy weight and higher manufacturing energy consumption of the existing chassis frame bottom plate of a light passenger.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a high-strength light-weight structure automobile bottom plate comprises a bottom plate main body and two bottom plate main beams, wherein the bottom plate main beams are arranged on two sides below the bottom plate main body, a transmission case is fixedly connected to one side below the bottom plate main body, an equipment mounting frame is fixedly connected to one side, far away from the transmission case, above the bottom plate main body, one end, far away from the transmission case, of the bottom plate main body is provided with a mounting hole, two ends, near the bottom plate main body, of the two bottom plate main beams are fixedly connected with fixing plates at equal intervals, a cross beam is fixedly connected to the middle part of the two bottom plate main beams, one end, far away from the mounting hole, of the inner sides of the two bottom plate main beams is fixedly connected with a first auxiliary beam, one end, near the mounting hole, of the inner sides of the two bottom plate main beams is fixedly connected with two second auxiliary beams, and third auxiliary beams are fixedly connected to two sides of the cross beam on the inner sides of the two bottom plate main beams, two the inboard first supporting beam of position department fixedly connected with of bottom plate girder between first auxiliary girder and third auxiliary girder, two the inboard one end fixedly connected with second supporting beam near first auxiliary girder of bottom plate girder, one side fixedly connected with dead lever that first auxiliary girder is close to the crossbeam, the middle part of bottom plate girder and the corresponding position department fixedly connected with girder connecting piece of crossbeam.
The automobile bottom plate is the cavity plate structure, and the cavity plate structure can be T template structure or enclosed type structure all around, and the cavity plate structure forms for the fixed concatenation of a plurality of cavity plates, and the concatenation mode can be horizontal also can be vertical, and even cross structure all goes, and cavity plate inside is equipped with the strengthening rib.
Furthermore, the reinforcing ribs are longitudinal reinforcing ribs, transverse reinforcing ribs, criss-cross or step-shaped or honeycomb-shaped or wavy, various simulation experiment designs are carried out on the reinforcing ribs, and the reinforcing ribs are designed to be criss-cross so that the reinforcing ribs have better bearing effect.
Furthermore, the hollow plate is made of aluminum alloy or carbon fiber, the weight of the aluminum alloy is higher than that of the carbon fiber according to the comparison between the aluminum alloy and the carbon fiber, the stability is high, the price is lower, and the cost performance of the aluminum alloy used by the hollow plate is higher.
Further, the fixed connection mode is one of friction stir welding or laser welding or riveting or arc welding, and a friction stir welding process is recommended, and the friction stir welding has the following advantages compared with the traditional friction welding and other welding methods: the welding joint has high quality and is not easy to generate defects, the welding seam is extruded under a plastic state, the welding seam belongs to solid phase welding, the defects of cracks, air holes and the like generated in the solidification process of a molten pool during fusion welding are avoided, and the welding seam is very favorable for high-quality connection of 7000 and 2000 series aluminum alloys with strong crack sensitivity; the butt joint and lap joint of the flat plates can be carried out without the limitation of shaft parts, the straight welding seam can be welded, and the butt joint of a large frame structure, a large cylinder body, a large flat plate and the like can be carried out; the method is convenient for mechanization and automation, and has stable quality and high repeatability; the welding cost is lower, no filling material or protective gas is needed, the product groove is not needed at the thick welding edge, the oxidation film is not needed to be removed when the welding aluminum product is used for tapping, only oil stain is needed to be removed, a certain gap is allowed to be reserved during butt joint, and the assembly precision is not required.
Preferably, a plurality of installation preformed holes are distributed on the bottom plate, the preformed holes have the process of punching chassis parts, high-end holes, wiring harness holes reserved by the water outlet truck, installation bottom holes of special high-distribution parts and the like.
Preferably, the two bottoms of the bottom plate main beams are fixedly connected with the bottom plate main body through eight fixing plates.
Preferably, one end of the fixing rod, which is far away from the first secondary beam, is fixedly connected with the first supporting beam.
Preferably, the mounting preformed hole is formed by press riveting, pull riveting or welding.
Preferably, the interior of the hollow board is filled with a foaming material, and the filling of the foaming material in the interior of the hollow board can play a role in reducing noise.
Preferably, one side of the tops of the two main beam connecting pieces, which is close to the cross beam, is fixedly connected with the two ends of the cross beam respectively.
Preferably, the two sides of the bottom plate of the automobile are provided with limiting structures, so that the positioning effect can be achieved when the automobile is packed.
Preferably, the stirring and friction welding speed is 0-2000mm/min, and the rotating speed is 250-2500 r/min.
According to the invention, the structure of the chassis is changed, the original auxiliary beam and carriage bottom structure of a light passenger is replaced by the hollow bottom plate, the weight is reduced by about 200 kg under the condition that the integral strength can meet the integral bearing requirement, and the friction stir welding process is adopted for welding, so that the long-term energy consumption can be saved, the height of the integral chassis is reduced by about 200mm, one step is omitted for getting on, the driving comfort of the whole vehicle is improved, the unit price is reduced by about 2000 yuan, the very huge integral cost can be saved, and the economic benefit is improved.
(III) advantageous effects
The invention provides a high-strength light-weight structural bottom plate. The method has the following beneficial effects:
1. according to the invention, the chassis structure is changed, the hollow bottom plate is used for replacing the original auxiliary beam and carriage bottom structure of a light bus, the weight is reduced by about 200 kilograms under the condition that the integral strength can meet the integral bearing requirement, and the friction welding process is adopted for welding, so that the long-term energy consumption can be saved, the fracture can be prevented, and the practicability of the bottom plate is improved.
2. The height of the whole chassis is reduced by about 200mm, and one step is omitted when a vehicle is loaded, so that the vehicle is lifted, the gravity center is lowered, the driving comfort of the whole vehicle is improved, and the practicability of the invention is enhanced.
3. The invention reduces the unit price by about 2000 yuan, can save very large overall cost and improves the economic benefit.
4. The invention can play the roles of heat preservation and noise reduction by paving the heat preservation cotton above the bottom plate and beating foam on two sides.
5. The mounting reserved hole is formed by press riveting, pull riveting or welding, and can effectively prevent falling off.
6. The two sides of the bottom plate are provided with the limiting structures, so that the positioning effect can be achieved when the box is packed.
7. The hollow board is filled with the foaming material, so that the noise reduction effect can be achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a bottom isometric view of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a bottom view of the present invention;
FIG. 5 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 6 is a schematic structural view of the present invention;
FIG. 7 is a perspective view of the present invention;
FIG. 8 is a side view of a void-board of the present invention;
FIG. 9 is a rib shape according to the present invention;
FIG. 10 is another bar shape of the present invention;
FIG. 11 is yet another bar shape of the present invention;
FIG. 12 is yet another bar shape of the present invention;
fig. 13 is yet another bar shape of the present invention.
Wherein, 1, the bottom plate main body; 101. a middle hollow plate; 102. a side hollow plate; 103. a side plate; 2. a floor main beam; 3. a fixing plate; 4. a transmission case; 5. a cross beam; 6. a first secondary beam; 7. a second secondary beam; 8. fixing the rod; 9. an equipment mounting rack; 10. a first support beam; 11. a second support beam; 12. a third secondary beam; 13. mounting holes; 14. a main beam connection; 15. reserving a hole; 16. a limiting structure; 17. reinforcing ribs;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 13, the present embodiment provides a high-strength lightweight structural vehicle floor, which includes a floor body 1; 101. a middle hollow plate; 102. a side hollow plate; 103. a side plate; 2. a floor main beam; 3. a fixing plate; 4. a transmission case; 5. a cross beam; 6. a first secondary beam; 7. a second secondary beam; 8. fixing the rod; 9. an equipment mounting rack; 10. a first support beam; 11. a second support beam; 12. a third secondary beam; 13. mounting holes; 14. a main beam connection; 15. reserving a hole; 16. a limiting structure; 17. reinforcing ribs;
specifically, the method comprises the following steps: as shown in FIGS. 1-5, the embodiment of the invention provides a high-strength light-weight automobile floor, which comprises a floor main body 1 and two floor main beams 2, wherein the floor main beams 2 are arranged on both sides below the floor main body 1, a transmission case 4 is fixedly connected to one side below the floor main body 1, an equipment mounting frame 9 is fixedly connected to one side, far away from the transmission case 4, above the floor main body 1, a mounting hole 13 is formed in one end, far away from the transmission case 4, of the side, close to the equipment mounting frame 9, of the floor main body 1, four fixing plates 3 are fixedly connected to both sides of one end, near the floor main body 1, of the two floor main beams 2 at equal intervals, the two floors main beams 2 are fixedly connected with the floor main body 1 through eight fixing plates 3, a cross beam 5 is fixedly connected to the middle part of the two floor main beams 2, and a first auxiliary beam 6 is fixedly connected to one end, far away from the mounting hole 13, inside the two floor main beams 2, the inner sides of the two bottom plate main beams 2 close to one end of the mounting hole 13 are fixedly connected with two second auxiliary beams 7, the inner sides of the two bottom plate main beams 2 are fixedly connected with third auxiliary beams 12 at two sides of the cross beam 5, the inner sides of the two bottom plate main beams 2 are fixedly connected with a first supporting beam 10 at a position between the first auxiliary beam 6 and the third auxiliary beam 12, the inner sides of the two bottom plate main beams 2 are fixedly connected with a second supporting beam 11 at a position close to one end of the first auxiliary beam 6, one side of the first auxiliary beam 6 close to the cross beam 5 is fixedly connected with a fixed rod 8, one end of the fixed rod 8 far away from the first auxiliary beam 6 is fixedly connected with the first supporting beam 10, the middle part of the bottom plate main beam 2 is fixedly connected with a main beam connecting piece 14 at a position corresponding to the cross beam 5, one side of the upper parts of the two main beam connecting pieces 14 close to the cross beam 5 is respectively fixedly connected with two ends of the cross beam 5, the invention changes the structure of the chassis, use the cavity bottom plate to replace original light visitor's auxiliary girder + railway carriage or compartment bottom structure, can satisfy under the whole condition that bears the weight of demand at holistic intensity, reduce about 200 kilograms of weight, and through friction welding process welding, can practice thrift long-term energy consumption, improved the practicality of device.
The bottom plate main body 1 comprises two middle hollow plates 101, two side hollow plates 102 and two side plates 103, the hollow plate structure is a T-shaped plate structure, one sides of the two middle hollow plates 101, which are far away from the two bottom plate main beams 2, are fixedly connected, one sides of the two middle hollow plates 101, which are close to the two bottom plate main beams 2, are fixedly connected with the corresponding side hollow plates 102, one sides of the two side hollow plates 102, which are far away from the middle hollow plates 101, are fixedly connected with the corresponding side plates 103, the bottom plate main body 1 is made of an aluminum alloy hollow plate material, the two middle hollow plates 101, the two side hollow plates 102 and the two side plates 103 are fixedly connected by friction welding, a plurality of reserved holes are distributed on the bottom plate main body 1, reinforcing ribs 17 are arranged inside the hollow plates, the reinforcing ribs are longitudinal reinforcing ribs, two sides of the bottom plate are provided with limiting structures, the height of the whole chassis is reduced by about 200mm, and the chassis is turned on a car with one step, the driving comfort of the whole vehicle is improved, the unit price of the invention is reduced by about 2000 yuan, the very large overall cost can be saved, and the economic benefit is improved.
Example 2:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 1 in that the material of the hollow plate 2 in the present embodiment is a carbon fiber material.
Example 3:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 1 in that the hollow plate 2 is spliced by laser welding.
Example 3:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 1 in that the reinforcing ribs in the present embodiment are transverse reinforcing ribs.
Example 4:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 1 in that the reinforcement ribs in the present embodiment are criss-cross.
Example 5:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 1 in that the reinforcement rib is stepped in the present embodiment.
Example 6:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 1 in that the reinforcing ribs are wavy in the present embodiment.
Example 7:
referring to fig. 1 to 13, the difference between the present embodiment and embodiment 1 is that the hollow plate structure in the present embodiment is a structure with a closed periphery.
Claims (10)
1. The utility model provides a high strength light weight structure vehicle bottom plate which characterized in that, vehicle bottom plate is the cavity plate structure, cavity inboard is equipped with the strengthening rib.
2. A high strength lightweight structural vehicle floor as recited in claim 1, wherein said hollow panel is constructed in a closed-perimeter or T-shaped panel configuration.
3. A high strength, lightweight structural vehicle floor as recited in claim 1, wherein said ribs are longitudinal ribs or transverse ribs or criss-cross or stepped or honeycomb or wave shaped.
4. A high strength, lightweight structural vehicle floor as recited in claim 1, wherein said hollow plate is made of aluminum alloy or carbon fiber.
5. A high strength, lightweight structural vehicle floor as recited in claim 1, wherein said vehicle floor is formed by fixedly joining a plurality of hollow panels.
6. A high strength, lightweight construction vehicle floor as recited in claim 1, wherein a plurality of mounting apertures are provided in said floor.
7. A high strength, lightweight structural vehicle floor as recited in claim 6, wherein said mounting apertures are clinched or riveted or welded.
8. A high strength, lightweight structural automotive floor as recited in claim 1, wherein said hollow panel is filled with a foam material.
9. A high strength, lightweight structural vehicle floor as recited in claim 1, wherein insulation wool is applied over said floor.
10. A high strength, lightweight structural vehicle floor as recited in claim 1, wherein said vehicle floor is provided with retaining structures on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527133.6A CN114103830A (en) | 2020-12-22 | 2020-12-22 | High-strength light-weight structure automobile bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527133.6A CN114103830A (en) | 2020-12-22 | 2020-12-22 | High-strength light-weight structure automobile bottom plate |
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| Publication Number | Publication Date |
|---|---|
| CN114103830A true CN114103830A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011527133.6A Pending CN114103830A (en) | 2020-12-22 | 2020-12-22 | High-strength light-weight structure automobile bottom plate |
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| CN (1) | CN114103830A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2229622A1 (en) * | 1972-06-19 | 1974-01-10 | Wackenhut Ernst | PLATFORM BASE FOR TRUCKS |
| CN204184449U (en) * | 2014-11-20 | 2015-03-04 | 南京机电职业技术学院 | A kind of can the lightweight automotive chassis of sound-absorbing |
| CN204871201U (en) * | 2015-06-30 | 2015-12-16 | 东莞中山大学研究院 | Low -floor [electric] motor coach lightweight chassis structure |
| CN109398388A (en) * | 2018-12-13 | 2019-03-01 | 成都天智轻量化科技有限公司 | Reinforced magnesium alloy suspension type aerial train body and manufacturing method thereof |
| CN210971314U (en) * | 2019-11-20 | 2020-07-10 | 浙江炫跃新材料技术有限公司 | Bottom beam of cargo box of light-weight logistics vehicle |
| CN215621795U (en) * | 2020-12-22 | 2022-01-25 | 泰州百颗星铝业科技有限公司 | High-strength light-weight structure automobile bottom plate |
-
2020
- 2020-12-22 CN CN202011527133.6A patent/CN114103830A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2229622A1 (en) * | 1972-06-19 | 1974-01-10 | Wackenhut Ernst | PLATFORM BASE FOR TRUCKS |
| CN204184449U (en) * | 2014-11-20 | 2015-03-04 | 南京机电职业技术学院 | A kind of can the lightweight automotive chassis of sound-absorbing |
| CN204871201U (en) * | 2015-06-30 | 2015-12-16 | 东莞中山大学研究院 | Low -floor [electric] motor coach lightweight chassis structure |
| CN109398388A (en) * | 2018-12-13 | 2019-03-01 | 成都天智轻量化科技有限公司 | Reinforced magnesium alloy suspension type aerial train body and manufacturing method thereof |
| CN210971314U (en) * | 2019-11-20 | 2020-07-10 | 浙江炫跃新材料技术有限公司 | Bottom beam of cargo box of light-weight logistics vehicle |
| CN215621795U (en) * | 2020-12-22 | 2022-01-25 | 泰州百颗星铝业科技有限公司 | High-strength light-weight structure automobile bottom plate |
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