CN113044071A - Double-skin splicing structure and double-skin spliced vehicle body - Google Patents
Double-skin splicing structure and double-skin spliced vehicle body Download PDFInfo
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- CN113044071A CN113044071A CN202110353751.1A CN202110353751A CN113044071A CN 113044071 A CN113044071 A CN 113044071A CN 202110353751 A CN202110353751 A CN 202110353751A CN 113044071 A CN113044071 A CN 113044071A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/043—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures connections between superstructure sub-units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
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- Body Structure For Vehicles (AREA)
Abstract
The invention relates to the technical field of railway vehicles, in particular to a double-skin splicing structure and a double-skin splicing vehicle body, which comprise: the first double-skin unit and the second double-skin unit are spliced, a closed groove is formed at the splicing position, a reinforcing piece is arranged in the closed groove, and the first double-skin unit and the second double-skin unit are riveted with the reinforcing piece through rivets on the side close to the carriage. The carbon fiber flitch is glued at the first notch and the second notch, so that the strength of the splicing part is enhanced, the flame resistance of the car body is enhanced, and the safety performance of the car body is greatly improved; the double-skin adopts a composite material and a hollow structure, so that the overall weight of the vehicle body is reduced, the sound insulation and heat insulation properties of the vehicle body are improved, and the impact resistance and the impact resilience deformation capability are enhanced; according to the invention, through the design of the double-skin splicing structure, the double-skin forming process is simple, the production efficiency of the double-skin is improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a double-skin splicing structure and a double-skin splicing vehicle body.
Background
The conventional rail vehicle body structure mainly adopts a metal vehicle body, and the materials are carbon steel, stainless steel, aluminum alloy and the like. Due to the limitation of the processing size and shape of metal plates or profiles, the conventional railway vehicle body structure is divided into a plurality of parts such as an underframe, a side wall, a roof, an end wall and the like. Each part is processed and manufactured by one or more metal materials, and then the connection among a plurality of parts is realized by a welding process. As a result, there are a large number of welds in conventional rail vehicle body structures. The welding operation easily causes large structural deformation, a heat affected zone is generated in a welding seam area, residual stress is generated in a metal structure, and the like, and the integral strength of the vehicle body structure is not facilitated. In addition, the welding workload of the vehicle body structure is large, and a part of welding areas, such as welding seam areas in the vehicle roof and the side wall, relate to overhead welding operation, greatly improve the welding operation difficulty, and easily cause welding defects, thereby influencing the assembly quality of the vehicle body.
The prior art discloses a novel vehicle body structure, as shown in fig. 1, a sandwich structure form of filling a paper honeycomb core material between an inner skin and an outer skin is adopted, a carbon fiber material is adopted, and two large parts, namely a side wall 1 and a roof 2, in the traditional metal vehicle body structure are integrated into a whole through a 00A integrated forming process, so that the assembly process flow of the vehicle body structure is simplified, seams among the parts are reduced, the influence of a welding heat affected zone and residual stress is eliminated, the overall strength of the vehicle body structure is improved, and the appearance of a vehicle body is effectively controlled. However, the integrated vehicle body structure has high requirements on precision of a pultrusion process in a forming process, and is complex in forming process, low in production efficiency and high in cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the double-skin splicing structure and the double-skin spliced automobile body are provided, so that the forming process is simple, and the cost is reduced.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a mosaic structure and two skin concatenation automobile bodies of two skins, includes: the first double-skin unit and the second double-skin unit are spliced, a closed groove is formed at the splicing position, a reinforcing piece is arranged in the closed groove, and the first double-skin unit and the second double-skin unit are riveted with the reinforcing piece through rivets on the side close to the carriage.
Further, the first double-skin unit, the second double-skin unit and the stiffener are all integrally formed by carbon fiber composite material through a pultrusion profile process.
Furthermore, a first groove and a second groove are formed in one end, close to the splicing position, of the first double-skin unit, and a first U-shaped groove is formed in the middle of the first groove and the second groove.
Furthermore, a third groove and a fourth groove are arranged at one end, close to the splicing position, of the second double-skin unit, the first groove and the third groove are in the same plane and form a first notch, the second groove and the fourth groove are in the same plane and form a second notch, a second U-shaped groove is arranged between the third groove and the fourth groove, and the second U-shaped groove and the first U-shaped groove form the closed groove.
Furthermore, flitch plates are covered in the first notch and the second notch, the thickness of the flitch plate is equal to the depth of the first notch and the second notch, and the size and the shape of the flitch plate are matched with those of the first notch and the second notch.
Furthermore, the flitch is carbon fiber prepreg, is glued on the first notch and the second notch, and has flame retardant property.
Furthermore, a third U-shaped groove is formed in one end, close to the splicing position, of the second double-skin unit, the first groove and the second groove of the first double-skin unit are embedded into the third U-shaped groove, and the closed groove is formed at the bottoms of the first U-shaped groove and the third U-shaped groove.
Further, the first double-skin unit and the second double-skin unit are composed of an outer skin, an inner skin and a plurality of reinforcing ribs arranged between the outer skin and the inner skin, and the plurality of reinforcing ribs form a plurality of cavity structures between the outer skin and the inner skin.
Furthermore, the outer skin, the inner skin and the reinforcing ribs are all carbon fiber prepreg which has flame retardant property.
The invention also provides a double-skin spliced automobile body which comprises the double-skin spliced structure.
The invention has the beneficial effects that: according to the invention, the carbon fiber flitch plates are adhered to the first notch and the second notch, so that the strength of the splicing part is enhanced, the flame resistance of the vehicle body is enhanced, and the safety performance of the vehicle body is greatly improved; the double-skin adopts a composite material and a hollow structure, so that the overall weight of the vehicle body is reduced, the sound insulation and heat insulation properties of the vehicle body are improved, and the impact resistance and the impact resilience deformation capability are enhanced; according to the invention, through the design of the double-skin splicing structure, the double-skin forming process is simplified, the double-skin production efficiency is improved, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a prior art rail vehicle body integrated body;
FIG. 2 is a schematic perspective view of a double skin splice vehicle body according to an embodiment of the present invention;
FIG. 3 is a front view of a two-skin splice vehicle body according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a splicing structure according to a first embodiment of the present invention;
FIG. 5 is an exploded view of a splice structure according to a first embodiment of the present invention;
FIG. 6 is a schematic diagram of a splicing structure according to a second embodiment of the present invention;
fig. 7 is an exploded view of a splicing structure according to a second embodiment of the present invention.
Reference numerals: 1. a first double-skin unit; 11. a first bevel; 12. a second bevel; 13. a first U-shaped groove; 2. a second double-skin unit; 21. a third bevel; 22. a fourth bevel; 23. a second U-shaped groove; 24. a third U-shaped groove; 3. a reinforcement; 4. closing the groove; 5. and (6) pasting the board.
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.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
As shown in fig. 2 to 5, a double-skin spliced structure and a double-skin spliced vehicle body include: the first double-skin unit 1 and the second double-skin unit 2 are spliced, a closed groove 4 is formed at the splicing position, a reinforcing piece 3 is arranged in the closed groove 4, and the first double-skin unit 1 and the second double-skin unit 2 are riveted with the reinforcing piece 3 through rivets on the side close to the carriage. It should be noted that the preferred reinforcement 3 is a rectangular pipe, so that the strength of the joint is enhanced, and the first double-skin unit 1 and the second double-skin unit 2 are riveted to one side edge of the rectangular pipe through rivets, so that the connection stability is increased, the overall structural strength of the joint is ensured, and the service life of the joint is ensured.
In the implementation process of the invention, the first double-skin unit 1 and the second double-skin unit 2 are respectively riveted on the reinforcing part 3 through rivets, so that splicing is realized, and the splicing design simplifies the forming process of the double-skin, ensures the precision of pultrusion and reduces the cost.
In the preferred embodiment of the present invention, the first double-skin unit 1, the second double-skin unit 2 and the stiffeners 3 are all integrally formed by carbon fiber composite material using a pultrusion process. The carbon fiber composite material is high in rigidity and high in light weight, the weight can be reduced while the structural strength is ensured, the light weight target is convenient to achieve, in addition, the manufacturing process is simplified through integral forming, the production efficiency is improved, and the cost is reduced. Because the carbon fiber composite material is insensitive to water vapor, the service life of the automobile body can be ensured, and the requirement of service life can be met.
In order to improve the stability of the splicing position, a first groove 11 and a second groove 12 are arranged at one end, close to the splicing position, of the first double-skin unit 1, and a first U-shaped groove 13 is arranged between the first groove 11 and the second groove 12.
On the basis of the above embodiment, a third groove 21 and a fourth groove 22 are arranged at one end of the second double-skin unit 2 close to the splicing position, the first groove 11 and the third groove 21 are in the same plane and form a first notch, the second groove 12 and the fourth groove 22 are in the same plane and form a second notch, a second U-shaped groove 23 is arranged between the third groove 21 and the fourth groove 22, and the second U-shaped groove 23 and the first U-shaped groove 13 form the closed groove 4. It should be noted that the first double-skin unit 1 and the second double-skin unit 2 are connected in an end-contact manner, the reinforcement 3 is placed in the closed groove 4, and the first double-skin unit 1 and the second double-skin unit 2 are respectively riveted to the reinforcement 3 in the closed groove 4 by rivets, so that the double-skin splicing is realized.
On the basis of the embodiment, in order to increase the strength of the splicing part, the flitch plates 5 are covered in the first notches and the second notches, the thickness of the flitch plates 5 is equal to the depth of the first notches and the depth of the second notches, and the size and the shape of the flitch plates 5 are matched with the size and the shape of the first notches and the second notches.
Specifically, flitch 5 is carbon fiber prepreg, and the glue has fire behaviour on first notch and second notch, has strengthened the anti fire behaviour of automobile body, has improved the security performance of automobile body greatly.
In a preferred embodiment of the present invention, each of the first double-skin unit 1 and the second double-skin unit 2 is composed of an outer skin, an inner skin, and a plurality of reinforcing ribs provided between the outer skin and the inner skin, and the plurality of reinforcing ribs form a plurality of cavity structures between the outer skin and the inner skin. It should be noted that the specific structure of the reinforcing rib is not limited, and the reinforcing rib is preferably arranged as a partition plate between the outer skin and the inner skin, and a cavity is formed between the partition plate and the partition plate, so that the stability is increased, the strength of the double skins is ensured, and the connection stability is improved.
In the embodiment, the outer skin, the inner skin and the reinforcing ribs are all carbon fiber prepreg, and the carbon fiber prepreg has flame retardant property, so that the flame retardant property of the automobile body is enhanced, and the safety performance of the automobile body is greatly improved.
Example two
In the second embodiment of the present invention, a second splicing manner of the first double-skin unit 1 and the second double-skin unit 2 is shown, specifically, as shown in fig. 6 to 7, a third U-shaped groove 24 is provided at one end of the second double-skin unit 2 close to the spliced portion, the first bevel 11 and the second bevel 12 of the first skin unit are embedded in the third U-shaped groove 24, and the closed groove 4 is formed at the bottoms of the first U-shaped groove 13 and the third U-shaped groove 24. It should be noted that in this embodiment, no groove is provided at the joint of the second double-skin unit 2, the first groove 11 and the second groove 12 of the first double-skin unit 1 are completely embedded in the third U-shaped groove 24 of the second double-skin unit 2, the stiffener 3 is placed in the first U-shaped groove 13 of the first double-skin unit 1, and the rivet sequentially penetrates through the second double-skin unit 2, the first double-skin unit 1, and the stiffener 3 to achieve the riveting purpose, thereby achieving the joint of the double skins.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A double-skin splicing structure is characterized by comprising: the double-skin combined type passenger car comprises a first double-skin unit (1) and a second double-skin unit (2), wherein the first double-skin unit (1) and the second double-skin unit (2) are spliced, a closed groove (4) is formed in the splicing position, a reinforcing piece (3) is arranged in the closed groove (4), and the first double-skin unit (1) and the second double-skin unit (2) are riveted with the reinforcing piece (3) through rivets on the side close to a car.
2. The double-skin splicing structure according to claim 1, wherein the first double-skin unit (1), the second double-skin unit (2) and the stiffeners (3) are all integrally formed from carbon fiber composite material using a pultrusion profile process.
3. The double-skin splicing structure of claim 1, wherein a first bevel (11) and a second bevel (12) are arranged at one end of the first double-skin unit (1) close to the splicing position, and a first U-shaped groove (13) is arranged between the first bevel (11) and the second bevel (12).
4. The double-skin splicing structure of claim 3, wherein one end, close to the splicing position, of the second double-skin unit (2) is provided with a third bevel (21) and a fourth bevel (22), the first bevel (11) and the third bevel (21) are in the same plane and form a first notch, the second bevel (12) and the fourth bevel (22) are in the same plane and form a second notch, a second U-shaped groove (23) is arranged between the third bevel (21) and the fourth bevel (22), and the second U-shaped groove (23) and the first U-shaped groove (13) form the closed groove (4).
5. The double-skin splicing structure of claim 4, wherein the first notch and the second notch are internally covered with a flitch plate (5), the thickness of the flitch plate (5) is equal to the depth of the first notch and the second notch, and the size and the shape of the flitch plate (5) are matched with those of the first notch and the second notch.
6. The double-skin splicing structure according to claim 5, wherein the flitch (5) is a carbon fiber prepreg, is adhered to the first notch and the second notch, and has flame retardant performance.
7. The double-skin splicing structure according to claim 3, wherein a third U-shaped groove (24) is formed in one end, close to the splicing position, of the second double-skin unit (2), the first bevel (11) and the second bevel (12) of the first double-skin unit (1) are embedded in the third U-shaped groove (24), and the closed groove (4) is formed by the bottoms of the first U-shaped groove (13) and the third U-shaped groove (24).
8. The double-skin splicing structure according to claim 1, wherein the first double-skin unit (1) and the second double-skin unit (2) are each composed of an outer skin, an inner skin, and a plurality of reinforcing ribs provided between the outer skin and the inner skin, the plurality of reinforcing ribs forming a plurality of cavity structures between the outer skin and the inner skin.
9. The double-skin splicing structure according to claim 8, wherein the outer skin, the inner skin and the reinforcing ribs are all carbon fiber prepregs, and the carbon fiber prepregs have flame retardant properties.
10. A double-skin spliced vehicle body comprising the double-skin spliced structure as recited in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110353751.1A CN113044071A (en) | 2021-04-01 | 2021-04-01 | Double-skin splicing structure and double-skin spliced vehicle body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110353751.1A CN113044071A (en) | 2021-04-01 | 2021-04-01 | Double-skin splicing structure and double-skin spliced vehicle body |
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| CN113044071A true CN113044071A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110353751.1A Pending CN113044071A (en) | 2021-04-01 | 2021-04-01 | Double-skin splicing structure and double-skin spliced vehicle body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116215592A (en) * | 2023-03-24 | 2023-06-06 | 新创碳谷集团有限公司 | Connection structure, connection method and railway traffic vehicle body |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB994006A (en) * | 1963-01-16 | 1965-06-02 | Ver Leichtmetallwerke Gmbh | Improvements in or relating to external skins for the bodies of vehicles, aircraft or the like |
| CN102962288A (en) * | 2012-11-21 | 2013-03-13 | 苏州江南航天机电工业有限公司 | Process for splicing arc-shaped large board and straight board |
| CN204311910U (en) * | 2014-12-03 | 2015-05-06 | 上海朗域建筑装饰工程有限公司 | Novel door sleeve modular structure |
| CN206279714U (en) * | 2016-12-14 | 2017-06-27 | 天津达因建材有限公司 | splicing component |
| CN208934320U (en) * | 2018-08-24 | 2019-06-04 | 嘉兴友邦集成木作家居有限公司 | A kind of turning connector assembling structure |
| CN209208885U (en) * | 2018-12-10 | 2019-08-06 | 江苏越科新材料有限公司 | A kind of Novel splicing formula compartment bassinet structure |
| CN111086535A (en) * | 2019-12-04 | 2020-05-01 | 中车青岛四方机车车辆股份有限公司 | Composite material connecting structure for railway vehicle and forming method |
| CN111152805A (en) * | 2020-01-02 | 2020-05-15 | 中车青岛四方机车车辆股份有限公司 | Concatenation formula automobile body and rail vehicle |
-
2021
- 2021-04-01 CN CN202110353751.1A patent/CN113044071A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB994006A (en) * | 1963-01-16 | 1965-06-02 | Ver Leichtmetallwerke Gmbh | Improvements in or relating to external skins for the bodies of vehicles, aircraft or the like |
| CN102962288A (en) * | 2012-11-21 | 2013-03-13 | 苏州江南航天机电工业有限公司 | Process for splicing arc-shaped large board and straight board |
| CN204311910U (en) * | 2014-12-03 | 2015-05-06 | 上海朗域建筑装饰工程有限公司 | Novel door sleeve modular structure |
| CN206279714U (en) * | 2016-12-14 | 2017-06-27 | 天津达因建材有限公司 | splicing component |
| CN208934320U (en) * | 2018-08-24 | 2019-06-04 | 嘉兴友邦集成木作家居有限公司 | A kind of turning connector assembling structure |
| CN209208885U (en) * | 2018-12-10 | 2019-08-06 | 江苏越科新材料有限公司 | A kind of Novel splicing formula compartment bassinet structure |
| CN111086535A (en) * | 2019-12-04 | 2020-05-01 | 中车青岛四方机车车辆股份有限公司 | Composite material connecting structure for railway vehicle and forming method |
| CN111152805A (en) * | 2020-01-02 | 2020-05-15 | 中车青岛四方机车车辆股份有限公司 | Concatenation formula automobile body and rail vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116215592A (en) * | 2023-03-24 | 2023-06-06 | 新创碳谷集团有限公司 | Connection structure, connection method and railway traffic vehicle body |
| CN116215592B (en) * | 2023-03-24 | 2023-10-17 | 新创碳谷集团有限公司 | Connection structure, connection method and railway traffic vehicle body |
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Application publication date: 20210629 |