CN113291334B - End wall and rail vehicle thereof - Google Patents
End wall and rail vehicle thereof Download PDFInfo
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- CN113291334B CN113291334B CN202110564323.3A CN202110564323A CN113291334B CN 113291334 B CN113291334 B CN 113291334B CN 202110564323 A CN202110564323 A CN 202110564323A CN 113291334 B CN113291334 B CN 113291334B
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- reinforcing
- end wall
- door
- headwall
- door frame
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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
- B61D17/06—End walls
Abstract
The invention relates to the technical field of end wall structures, in particular to an end wall and a rail vehicle thereof, comprising: skeleton and cladding are at the outer covering in the skeleton outside, and the board of outer covering is along having the bending segment, the bending segment is from following the face orientation of outer covering the automobile body extends, is equipped with the reinforcing structure in the cavity that the bending segment formed, and the skeleton includes door frame roof beam, a plurality of stiffening beam and a plurality of reinforcement longeron, and door frame roof beam, a plurality of stiffening beam and a plurality of reinforcement longeron are close to each tip of bending segment and all are fixed with the reinforcing structure riveting, and the door frame roof beam sets up the door looks adaptation of seting up on position on the headwall and the headwall. Compared with the existing end wall of the vehicle, the reinforcing structure and the door frame beam form a closed loop through the arrangement of the door frame beam, so that the connecting strength of the door opening position of the end wall is increased, and the load bearing capacity of the end wall is improved.
Description
Technical Field
The invention relates to the technical field of end wall structures, in particular to an end wall and a rail vehicle thereof.
Background
With the rapid popularization of urban rail transit in China and the great improvement of the running speed of vehicles, people put higher requirements on the safety of rail vehicles. At present, most of end walls of the railway vehicles are made of carbon fiber composite materials, the end walls are located at the front end and the rear end of a subway vehicle body and form a closed space with the vehicle body and an underframe, and the end walls are used for installing through passages between adjacent vehicle bodies so as to facilitate passengers to walk through.
Among the correlation technique, rail vehicle automobile body headwall is mostly the skeleton and adds the structure of covering, the connected mode that adopts three-dimensional joint or connecting plate is connected to the skeleton, and the skeleton texture is formed by a plurality of crossbeams and a plurality of longerons concatenation, but a plurality of crossbeams and a plurality of longerons are open groined structure, the position of seting up the door on being close to the headwall only leans on the tip of many crossbeams to support, make its headwall set up the local joint strength of door less than, thereby lead to the headwall overall structure ability when bearing load less than.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the end wall and the rail vehicle thereof are provided, and the connecting strength of the end wall at the position where the door is arranged is increased, so that the load bearing capacity is improved.
In order to achieve the purpose, the invention adopts the technical scheme that: the headwall that provides is used for with automobile body and chassis fixed connection, includes: the outer skin is coated on the outer side of the framework, the plate edge of the outer skin is provided with a bending section, and a cavity formed by the bending section is internally provided with a reinforcing structure;
the framework comprises a door frame beam, a plurality of reinforcing cross beams and a plurality of reinforcing longitudinal beams, wherein the door frame beam, the reinforcing cross beams and the reinforcing longitudinal beams are close to each end part of the bending section and are fixedly riveted with the reinforcing structure, and the door frame beam is positioned on the end wall and matched with a door arranged on the end wall.
Furthermore, the outer skin is formed by integrally curing carbon fibers, and the reinforcing structure and the framework are fixedly connected to the outer skin through adhesive films and rivets.
Furthermore, the door frame beam is of a frame structure formed by a door upper cross beam and two door side longitudinal beams, the two door side longitudinal beams are symmetrically arranged on two sides of the end wall, the door side longitudinal beams are provided with through grooves in the transverse direction, and the door upper cross beam penetrates through the through grooves to be fixedly connected with the two door side longitudinal beams.
Furthermore, the reinforcing structure comprises an n-type corner reinforcing part and two bottom reinforcing parts, the two bottom reinforcing parts are symmetrically arranged, and the two end parts, close to the underframe, of the n-type corner reinforcing part are respectively connected with the two bottom reinforcing parts.
Furthermore, the section of the n-type corner reinforcing part is of an omega structure, and a filling material is arranged in the n-type corner reinforcing part and is foam;
the bottom reinforcing member is provided with a bending edge attached to the bending section, one end of the bending edge is close to the opening groove, and the opening of the opening groove is provided with a first guide edge.
Further, the bottom reinforcement transversely is equipped with the recess, be equipped with the strengthening rib in the recess, the strengthening rib is closed omega structure.
Furthermore, the bending section extends inwards to form a containing groove from the surface of the outer skin towards the vehicle body, and the reinforcing structure is arranged in the containing groove.
Furthermore, the reinforcing structure comprises a reinforcing part and a coating skin, a structure matched with the reinforcing part is arranged on the coating skin, one end of the coating skin is attached to the inner surface of the outer skin, the other end of the coating skin is connected with the edge of the bending section, and the reinforcing part is fixed in the accommodating groove through the coating skin.
Furthermore, the cross section of the reinforcing part is of an L-shaped structure, a first step surface and a second step surface are arranged on the reinforcing part, the first step surface is embedded into the accommodating groove, and the second step surface is connected with the coating skin in a fitting manner;
the surface skin of the reinforcement is integrally cured and molded by carbon fiber, and the interior of the reinforcement is filled with a foam material.
The invention also provides a railway vehicle which comprises the end wall, a vehicle body and an underframe, wherein the end wall adopts the end wall.
The invention has the beneficial effects that: compared with the existing end wall of the vehicle, the reinforcing structure and the door frame beam form a closed loop through the arrangement of the door frame beam, and the connecting strength of the door opening position of the end wall is increased and the load bearing capacity of the end wall is improved through the reinforcing structures of the two door side longitudinal beams and the door upper cross beam.
This headwall for rail vehicle, under the intensity and the rigidity prerequisite that satisfy the headwall structure, the major structure uses full carbon fiber combined material, and through setting up reinforcing structure for the headwall has high strength, destructiveness resistance, high modulus, resistance to deformation ability, antifatigue, corrosion-resistant, diamagnetism and vibration/noise reduction's superior performance, has still realized the lightweight of headwall in the very big degree.
This headwall for rail vehicle utilizes the characteristics of carbon-fibre composite integrated design, fully considers the structure and the characteristics of headwall, on the basis that does not surpass original structure usage space, has optimized the connection structure of original crossbeam and longeron, has strengthened the joint strength that the headwall offered door department.
This headwall for rail vehicle can give full play to carbon-fibre composite material and compare the characteristics that intensity is high, specific modulus is big, and it is outstanding to subtract heavy effect, adopts the integrated design, has simplified redundant traditional welded structure, reduces assembly work load.
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 perspective view of an end wall according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a skeleton structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a door frame beam according to an embodiment of the present invention;
FIG. 4 is an exploded view of an enhanced structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of a bottom reinforcement structure according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a double-ended wall according to an embodiment of the present invention;
FIG. 7 is an exploded view of a second enhancement structure according to an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 at A;
figure 9 is a sectional view B-B of figure 6.
Reference numerals: 1. a framework; 11. a door frame beam; 111. a door upper beam; 112. a door side rail; 12. a reinforcing cross beam; 13. reinforcing the longitudinal beam; 2. an outer skin; 21. bending the section; 22. a containing groove; 3. a reinforcing structure; 31a, n-type corner reinforcement; 32a, a bottom stiffener; 32a-1, a bent edge; 32a-2, open slots; 32a-3, a first guide edge; 32a-4, a groove; 31b, a reinforcement; 31b-1, a first step surface; 31b-2, a second step surface; 32b, covering the skin.
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
A headwall as shown in fig. 1 to 5 for fixed connection with a vehicle body and a chassis, comprising: the automobile body comprises a framework 1 and an outer skin 2 coated on the outer side of the framework 1, wherein the plate edge of the outer skin 2 is provided with a bending section 21, the bending section 21 extends towards the automobile body from the plate surface of the outer skin 2, and a cavity formed by the bending section 21 is internally provided with a reinforcing structure 3; skeleton 1 includes door frame roof beam 11, reinforcing beam 12 and strengthens longeron 13, and door frame roof beam 11, reinforcing beam 12 and each tip that reinforcing beam 13 is close to bending segment 21 all with reinforcing structure 3 riveting fixed, and the door looks adaptation of seting up on position and the headwall of door frame roof beam 11 setting on the headwall. It should be noted that the door frame beam 11 is adapted to the door provided on the end wall, that is, the position of the door frame beam is arranged according to the size of the door, so that the door frame beam 11 is ensured to be located at the edge where the door is provided on the end wall, and the reinforcement effect on the door provided on the end wall is realized.
In the preferred embodiment of the invention, the door frame beam 11 in the framework 1 is arranged, so that the reinforcing structure 3 and the door frame beam 11 form a closed loop, the connection strength of the end wall at the position where the door is arranged is increased, and the load bearing capacity of the end wall is improved. In addition, on the premise of meeting the strength and rigidity of the end wall structure, the main body structure is made of the all-carbon fiber composite material, so that the characteristics of high specific strength and large specific modulus of the carbon fiber composite material can be fully exerted, and the weight reduction effect is remarkable; and through setting up reinforcing structure 3 for the headwall has high strength, destructiveness resistance, high modulus, resistance to deformation ability, antifatigue, corrosion-resistant, diamagnetism and vibration/noise reduction's superior performance, has still realized the lightweight of headwall to a very big extent, fully considers the structure and the characteristics of headwall in addition, on the basis that does not surpass original structure usage space, has optimized the connection structure between original crossbeam and the longeron, has strengthened the joint strength that the headwall offered the door department.
Preferably, the outer skin 2 is formed by integrally curing carbon fibers, the reinforcing structure 3 and the framework 1 are fixedly connected to the outer skin 2 through glue films and rivets, and the characteristic of the integrated design of carbon fiber composite materials is utilized, so that the redundant traditional welding structure is simplified, and the assembly workload is reduced.
On the basis of the above embodiment, specifically, as shown in fig. 3, the door frame beam 11 is a frame structure formed by a door upper beam 111 and two door side longitudinal beams 112, the two door side longitudinal beams 112 are symmetrically arranged on both sides of the end wall door, and a through groove is transversely arranged on the door side longitudinal beam 112, the door upper beam 111 passes through the through groove and is fixedly connected with the two door side longitudinal beams 112, the door upper beam 111 and the door side longitudinal beams 112 are integrally cured and formed by carbon fiber composite materials, and are riveted and fixed by the through groove, so that the assembly workload is reduced, the assembly efficiency is improved, the arrangement of the through groove facilitates the adjustment of the transverse distance between the two door side longitudinal beams 112, the accuracy of the positions of the end walls, opposite to the end walls, of the door upper beam 111 and the two door side longitudinal beams 112 is ensured, and the connection strength of the end walls at the positions where the doors are arranged is improved.
In order to increase the overall strength of the headwall, the reinforcing structure 3 includes, as shown in fig. 4, an n-type corner reinforcing member 31a and two bottom reinforcing members 32a, the two bottom reinforcing members 32a being symmetrically disposed, and the n-type corner reinforcing member 31a being connected to the two bottom reinforcing members 32a near both ends of the underframe, respectively. On the basis of the door frame beam 11, the arrangement of the n-shaped corner reinforcing piece 31b31a and the bottom reinforcing piece 32a forms a closed loop, and the stability of the whole framework 1 structure is ensured.
On the basis of the embodiment, the section of the n-type corner reinforcing piece 31a is in an omega structure, the n-type corner reinforcing piece 31a is internally provided with the filling material, the filling material is foam, the overall structural strength is improved, the weight is reduced, and the foam material also has the advantages of low water absorption and sound and heat insulation effects. The bottom reinforcing piece 32a is provided with a bending edge 32a-1 attached to the bending section 21, the bending edge 32a-1 is attached to the bending section 21 of the outer skin 2 to play a role in reinforcement, an open groove 32a-2 is longitudinally arranged at one end close to the bending edge 32a-1, and a first guide edge 32a-3 is arranged at the opening of the open groove 32 a-2. The provision of the first guide edges 32a-3 reduces the contact area of the bottom stiffener 32a with the outer skin 2, so that it forms a cavity, further increasing the strength of the junction between the end wall and the underframe.
In order to further enhance the connection strength of the bottom reinforcement 31b, the bottom reinforcement 32a is transversely provided with grooves 32a-4, and reinforcing ribs are arranged in the grooves 32a-4 and have a closed omega structure.
In addition to the end wall, the present embodiment also provides a rail vehicle, which includes an end wall, a vehicle body, and an underframe, wherein the end wall is the end wall in the present embodiment. It should be noted that the vehicle bodies such as the vehicle body and the chassis form a non-core invention point of the present application, and those skilled in the art can implement the method based on the prior art, so that detailed description is omitted herein.
Example two
In the second embodiment of the present invention, another structural form of the headwall is shown as shown in fig. 6 to 9, and the structure and connection relationship of the remaining components are the same as those in the first embodiment, and are not described again here.
As another embodiment of the present invention, on the basis that the bending section 21 extends from the panel surface of the outer skin 2 toward the vehicle body, the edge of the bending section 21 opens a door toward the end wall to extend to form a receiving groove 22, and the reinforcing structure 3 is placed in the receiving groove 22. The bending section 21 on the outer skin 2 comprises a vertical plate surface extending section towards the vehicle body, then the bending section extends section towards the end wall, the finally formed accommodating groove 22 is of a C-shaped structure, the reinforcing structure 3 is arranged in the accommodating groove 22, redundant connecting structures are reduced, and the assembling workload is improved.
In order to further increase the overall strength of the headwall, specifically, the reinforcing structure 3 includes a reinforcing member 31b and a covering skin 32b, the covering skin 32b is provided with a structure adapted to the reinforcing member 31b, one end of the covering skin 32b is attached to the inner surface of the outer skin 2, the other end of the covering skin is connected to the edge of the bending section 21, and the reinforcing member 31b is fixed in the accommodating groove 22 through the covering skin 32 b. In order to increase the overall strength of the outer skin 2, after the reinforcement 31b is inserted into the pocket 22, a wet covering skin 32b is laid, so that the covering skin 32b is cured and connected with the outer skin 2, and the overall connection strength is improved.
On the basis of the above embodiment, specifically, the cross section of the reinforcement 31b is in an L-shaped structure, the reinforcement 31b is provided with a first step surface 31b-1 and a second step surface 31b-2, the first step surface 31b-1 is embedded into the accommodating groove 22, and the second step surface 31b-2 is attached to the covering skin 32b and is riveted with the framework 1; the surface skin of the reinforcing part 31b is integrally cured and molded, the filling material is foam, the strength of the whole structure is improved, the weight is reduced, the foam material also has low water absorption and sound and heat insulation effects.
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 (5)
1. Headwall for with automobile body and chassis fixed connection, its characterized in that includes: the automobile body comprises a framework (1) and an outer skin (2) coated on the outer side of the framework (1), wherein the plate edge of the outer skin (2) is provided with a bending section (21), the bending section (21) extends towards the automobile body along the plate surface of the outer skin (2), and a cavity formed by the bending section (21) is internally provided with a reinforcing structure (3);
the framework (1) comprises a door frame beam (11), a plurality of reinforcing cross beams (12) and a plurality of reinforcing longitudinal beams (13), each end part of the door frame beam (11), the reinforcing cross beams (12) and the reinforcing longitudinal beams (13), which is close to the bending section (21), is riveted and fixed with the reinforcing structure (3), and the position of the door frame beam (11) on the end wall is matched with a door arranged on the end wall;
the reinforcing structure (3) comprises an n-shaped corner reinforcing piece (31a) and two bottom reinforcing pieces (32a), the two bottom reinforcing pieces (32a) are symmetrically arranged, and the n-shaped corner reinforcing piece (31a) is close to two end parts of the underframe and is respectively connected with the two bottom reinforcing pieces (32 a);
the section of the n-type corner reinforcing piece (31a) is of an omega structure, and a filling material is arranged in the n-type corner reinforcing piece (31a), wherein the filling material is foam;
the bottom reinforcing piece (32a) is provided with a bending edge (32a-1) attached to the bending section (21), one end close to the bending edge (32a-1) is longitudinally provided with an open groove (32a-2), and an opening of the open groove (32a-2) is provided with a first guide edge (32 a-3).
2. The headwall according to claim 1, characterized in that the outer skin (2) is integrally formed by carbon fiber, and the reinforcement structure (3) and the skeleton (1) are fixedly connected to the outer skin (2) by glue film and rivets.
3. The end wall of claim 1, wherein the door frame beam (11) is a frame structure formed by a door upper cross beam (111) and two door side longitudinal beams (112), the two door side longitudinal beams (112) are symmetrically arranged on two sides of the end wall, which are provided with doors, a through groove is arranged on each door side longitudinal beam (112) along the transverse direction, and the door upper cross beam (111) passes through the through groove and is fixedly connected with the two door side longitudinal beams (112).
4. Headwall according to claim 1, characterized in that the bottom reinforcement (32a) is provided with grooves (32a-4) in the transverse direction, and that the grooves (32a-4) are provided with reinforcing bars, which are of closed Ω -structure.
5. Railway vehicle comprising a headwall, a bodywork and an underframe, characterized in that the headwall employs a headwall according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564323.3A CN113291334B (en) | 2021-05-24 | 2021-05-24 | End wall and rail vehicle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564323.3A CN113291334B (en) | 2021-05-24 | 2021-05-24 | End wall and rail vehicle thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113291334A CN113291334A (en) | 2021-08-24 |
| CN113291334B true CN113291334B (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110564323.3A Active CN113291334B (en) | 2021-05-24 | 2021-05-24 | End wall and rail vehicle thereof |
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| Country | Link |
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| CN (1) | CN113291334B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407946B (en) * | 2021-12-20 | 2023-06-23 | 北京轨道交通技术装备集团有限公司 | End wall structure and manufacturing method thereof |
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| JP2010254121A (en) * | 2009-04-24 | 2010-11-11 | Ihi Corp | Track system traffic vehicle |
| CN102015408A (en) * | 2009-03-25 | 2011-04-13 | 西日本旅客铁道株式会社 | Improvement of body structure of rolling stock |
| CN102099236A (en) * | 2009-03-30 | 2011-06-15 | 川崎重工业株式会社 | Railroad vehicle body structure and method of manufacturing same |
| CN204506897U (en) * | 2015-01-21 | 2015-07-29 | 南车株洲电力机车有限公司 | A kind of vehicle end wall structure |
| CN205737557U (en) * | 2016-05-20 | 2016-11-30 | 中车唐山机车车辆有限公司 | EMUs headwall, Motor train unit body and EMUs |
| CN208325223U (en) * | 2018-05-09 | 2019-01-04 | 西南交通大学 | A kind of structure of the carbon fibre composite sky iron car body of low cost |
| CN112172851A (en) * | 2020-10-29 | 2021-01-05 | 中车齐齐哈尔车辆有限公司 | Rail vehicle and end wall thereof |
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2021
- 2021-05-24 CN CN202110564323.3A patent/CN113291334B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102015408A (en) * | 2009-03-25 | 2011-04-13 | 西日本旅客铁道株式会社 | Improvement of body structure of rolling stock |
| CN102099236A (en) * | 2009-03-30 | 2011-06-15 | 川崎重工业株式会社 | Railroad vehicle body structure and method of manufacturing same |
| JP2010254121A (en) * | 2009-04-24 | 2010-11-11 | Ihi Corp | Track system traffic vehicle |
| CN204506897U (en) * | 2015-01-21 | 2015-07-29 | 南车株洲电力机车有限公司 | A kind of vehicle end wall structure |
| CN205737557U (en) * | 2016-05-20 | 2016-11-30 | 中车唐山机车车辆有限公司 | EMUs headwall, Motor train unit body and EMUs |
| CN208325223U (en) * | 2018-05-09 | 2019-01-04 | 西南交通大学 | A kind of structure of the carbon fibre composite sky iron car body of low cost |
| CN112172851A (en) * | 2020-10-29 | 2021-01-05 | 中车齐齐哈尔车辆有限公司 | Rail vehicle and end wall thereof |
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| CN113291334A (en) | 2021-08-24 |
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