CN110667617A - Head car body structure of high-floor tramcar - Google Patents
Head car body structure of high-floor tramcar Download PDFInfo
- Publication number
- CN110667617A CN110667617A CN201911005094.0A CN201911005094A CN110667617A CN 110667617 A CN110667617 A CN 110667617A CN 201911005094 A CN201911005094 A CN 201911005094A CN 110667617 A CN110667617 A CN 110667617A
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- Prior art keywords
- roof
- section bar
- module
- body structure
- underframe
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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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- 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
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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
- B61D17/08—Sides
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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
- B61D17/12—Roofs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F1/00—Underframes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a head car body structure of a high-floor tramcar, which comprises: the side wall type automobile cab comprises an underframe, side walls, a roof, a cab, end walls and upper/lower hinge seats, wherein the underframe, the side walls, the roof and the end walls are connected through welding; the car body structure is mainly formed by welding extruded aluminum profiles with hollow sections. Through the mode, the vehicle body structure has a good light weight effect under the condition of meeting the strength requirement, and has good attraction and noise insulation performance; meanwhile, the window upright post is designed in a radian manner, so that the area of a window frame is increased, the visual field of passengers is wider, and the requirements of tour and sightseeing are met; in addition, the upper hinge seat and the lower hinge seat are connected in a riveting mode and are matched with each other, the connection strength between the upper hinge seat and the lower hinge seat and the vehicle body can be effectively enhanced, and even if the vehicle body is larger than 12 meters, the vehicle body can also have enough connection strength.
Description
Technical Field
The invention relates to the technical field of rail vehicles, in particular to a head vehicle body structure of a high-floor tramcar.
Background
The head car body structure of the existing tramcar comprises: chassis, side wall, roof, driver's cabin, headwall and articulated seat, in the in-service use process, find that it has following defect:
1. the chassis is integrally formed by welding high-strength weather-resistant steel and stainless steel, and the using amount of high-strength materials is increased at the welding stress concentration part, so that the weight of a vehicle is increased, the noise propagation path is increased, and the riding comfort is reduced;
2. the chassis is provided with bulges in the area of the bogie, the permeability of the vehicle body is poor, and the space in the vehicle is small;
3. the window body on the side wall has small area, the passenger has narrow visual field, and the requirement of traveling and sightseeing cannot be met;
4. the vehicle electrical equipment is almost arranged on the roof, so that the requirements on the strength, rigidity, impact vibration and the like of the side wall and the roof structure are increased;
it has also been found that the connection strength of the existing hinge mounts cannot be adapted for body constructions exceeding 12 meters, since the existing bodies are generally less than 10 meters.
In view of this, it is necessary to develop a new type of head car body structure of a tramcar, which can meet the requirements of light weight and high strength, and can improve the permeability and the visible range, and at the same time, it is necessary to improve the connection mode of the car end hinge seat to ensure the hinge strength.
Disclosure of Invention
The invention mainly solves the technical problem of providing a head car body structure of a high-floor tramcar, which solves the defects of the existing car body structure.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is a head car body structure of a high-floor tramcar, comprising: the automobile roof hinge structure comprises an underframe, side walls, a roof, a cab, end walls, an upper hinge seat and a lower hinge seat, wherein the underframe, the side walls, the roof and the end walls are connected through welding;
the body of chassis, side wall, roof, cab, headwall all adopts cavity cross section extrusion aluminium alloy tailor-welding to form, be equipped with many aluminium ribbed slab in the cavity of cavity cross section extrusion aluminium alloy, aluminium ribbed slab respectively with the upper and lower inner wall connection of cavity and the V type sound-absorbing chamber of constituteing in succession arranging each other.
In a preferred embodiment of the present invention, the body of the underframe includes a middle section, a second section, a first edge beam, and a third section, a fourth section, and a second edge beam, which are sequentially welded to one side of the middle section, symmetrically and sequentially welded to the other side of the middle section, wherein a plurality of C-shaped grooves are uniformly integrated on the lower surfaces of the first section, the second section, the third section, the fourth section, and the middle section, and a plurality of suspension rib plates are uniformly integrated on the inner side surfaces of the first edge beam and the second edge beam.
In a preferred embodiment of the present invention, the first edge beam and the first section bar, and the second edge beam and the fourth section bar are all connected by lap welding, and the first section bar, the second section bar, the middle section bar, and the third section bar and the fourth section bar are connected by groove welding.
In a preferred embodiment of the invention, the body of the side wall comprises a first module, a second module and a third module, the upper ends of the first module, the second module and the third module are connected with the groove welding of the roof body, the lower ends of the first module, the second module and the third module are connected with the groove welding of the underframe body, a front vehicle door area is formed between the first module and the second module, and a rear vehicle door area is formed between the second module and the third module.
In a preferred embodiment of the invention, the second module and the third module are provided with vertically distributed window columns, the upper ends of the window columns are arc-shaped, and the arc-shaped end surfaces extend to the edge of the body of the vehicle roof and are in direct contact with the vehicle roof.
In a preferred embodiment of the invention, the body of the roof comprises an arc-shaped roof and a flat roof integrated with the front end of the arc-shaped roof, the front end of the flat roof is integrated with a roof end plate, and the cab mounting seat is welded on the roof end plate.
In a preferred embodiment of the invention, a first arc-shaped connecting plate located above a rear door area of the vehicle body is integrally formed on the side of the arc-shaped roof, and a second arc-shaped connecting plate located above a front door area of the vehicle body is integrally formed on the side of the roof.
In a preferred embodiment of the invention, the radian of the first arc-shaped connecting plate and the second arc-shaped connecting plate is matched with the radian of the upper end of the window upright post.
In a preferred embodiment of the invention, the upper part of the rear end of the cab is fixed on the cab mounting seat through bolts, and the bottom of the cab is fixed on the underframe through bolts.
In a preferred embodiment of the invention, the upper end of the end wall is connected with the upper end groove of the roof in a welding manner, the side wall is connected with the side wall groove in a welding manner, a concave cavity is formed in the upper end surface of the end wall, and the upper hinge seat is riveted and fixed in the concave cavity.
The invention has the beneficial effects that:
1. the chassis, the side wall, the roof, the cab and the end wall body are all formed by welding extruded aluminum profiles with hollow sections, a plurality of aluminum rib plates for improving the strength are arranged in the hollow cavity of the extruded aluminum profiles with hollow sections, the bearing capacity of materials is fully exerted, and the material usage amount at a local reinforcing part can be reduced, so that the number of welding seams is reduced, stress concentration is reduced, the whole structure has the characteristics of light weight and high strength, and continuous V-shaped sound absorption cavities are arranged in the extruded aluminum profiles with hollow sections, so that the noise transmission path can be reduced, and the riding comfort is improved;
2. the bottom frame is not provided with the protrusions, the upper ends of the window stand columns on the side walls are arc-shaped, and the arc-shaped end surfaces extend to the edge of the body of the car roof and are in direct contact with the car roof, so that the permeability of the car body is strong, the space in the car is large, the visual field of passengers can be widened, and the requirement of tour and sightseeing is met;
3. the bottom of the vehicle body is provided with the C-shaped groove and the suspension rib plate, so that electrical equipment of the vehicle except an air conditioner is suspended at the bottom of the vehicle body, and the requirements of the equipment on the strength, the rigidity, the impact vibration and the like of the side wall and the roof structure can be reduced;
4. adopt upper and lower articulated seat structure, go up articulated seat and headwall and pass through rivet connection, articulated seat passes through rivet connection with the chassis down, can strengthen the joint strength of articulated seat and automobile body, even the automobile body is greater than 12 meters, also can have sufficient joint strength.
Drawings
FIG. 1 is a schematic perspective view of a head car body structure of a high-floor tramcar according to the present invention;
FIG. 2 is a right side view of a preferred embodiment of a head car body structure of a high floor tram in accordance with the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged cross-sectional view of the undercarriage of FIG. 3 at B;
FIG. 5 is a schematic view of the construction of a side wall;
FIG. 6 is a schematic view of the structure of the vehicle roof;
FIG. 7 is a cab connection schematic;
FIG. 8 is a schematic view of the connection of the headwall to the roof;
FIG. 9 is a schematic view of the connection of the lower hinge base to the chassis;
the parts in the drawings are numbered as follows:
1. the steel plate comprises a bottom frame, 11, a middle section bar, 12, a first section bar, 13, a second section bar, 14, a first edge beam, 15, a third section bar, 16, a fourth section bar, 17, a second edge beam, 100, a C-shaped groove, 101 and a hanging rib plate; 2. the side wall comprises a side wall 21, a first module 22, a second module 23, a third module 200, a window upright column 201 and a longitudinal section bar; 3. the cab structure comprises a roof, 31, an arc-shaped roof, 311, a first arc-shaped connecting plate, 32, a flat roof, 321, a second arc-shaped connecting plate, 33, roof end plates, 34 and a cab mounting seat; 4. a driver's cab; 5. end wall, 51, cavity; 6. an upper hinge base; 7. a lower hinged seat.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 1 and 2, the present invention includes:
a head car body structure of a high-floor tram, comprising: the automobile roof structure comprises an underframe 1, side walls 2, a roof 3, a cab 4, end walls 5, an upper hinge seat 6 and a lower hinge seat 7, wherein the underframe 1, the side walls 2, the roof 3 and the end walls 5 are connected through welding, the cab 4 is connected with the underframe 1 and the roof 3 through bolts, the upper hinge seat 6 is connected with the end walls 5 through rivets, and the lower hinge seat 7 is connected with the underframe 1 through rivets;
wherein, chassis 1, side wall 2, roof 3, cab 4, headwall 5's body all adopts cavity cross-section extrusion aluminium alloy tailor-welding to form, the cavity in-connection of cavity cross-section extrusion aluminium alloy has many reinforcing aluminium gusset, aluminium gusset respectively with the V type sound-absorbing chamber that continuous arrangement was arranged is formed to the upper and lower inner wall connection of cavity each other, can effectively improve the bearing capacity of material on the one hand, can reduce the material use amount of local reinforcement department to reduce welding seam quantity, reduce part stress concentration, improve structural strength and fatigue resistance, on the other hand forms the sound-absorbing chamber and can reduce noise propagation path, improves riding comfort.
Referring to fig. 3 and 4, the body of the underframe 1 includes a middle section bar 11, a second section bar 13, a first section bar 12, a first edge beam 14, which are sequentially welded on one side of the middle section bar 11, and a third section bar 15, a fourth section bar 16, and a second edge beam 17, which are symmetrically and sequentially welded on the other side of the middle section bar 11, a plurality of C-shaped grooves 100 are uniformly integrated on the lower surfaces of the first section bar 12, the second section bar 13, the third section bar 15, the fourth section bar 16, and the middle section bar 11, and a plurality of hanging rib plates 101 are uniformly integrated on the inner surfaces of the first edge beam 14 and the second edge beam 15, and the C-shaped grooves 100 and the hanging rib plates 101 are all used for installing the electric equipment of the electric car, that is, to be, most of the electric equipment is installed below the underframe 1, instead of the existing installing mode on the roof can be reduced, and the strength of the side wall and roof structure of the equipment, Rigidity, impact vibration, and the like;
the first edge beam 14 and the first section bar 12, and the second edge beam 17 and the fourth section bar 16 are connected by lap welding, and can be transversely adjusted to ensure the transverse size of the underframe 1; the first section bar 12, the second section bar 13, the middle section bar 11, the third section bar 15 and the fourth section bar 16 are connected through groove welding, so that the strength and the reliability of the connection among the first section bar 12, the second section bar 13, the middle section bar 11, the third section bar 15 and the fourth section bar 16 can be improved, and the flatness of the end face of the underframe 1 is ensured.
Referring to fig. 5, the body of the side wall 2 includes a first module 21, a second module 22 and a third module 23, the first module 21, the second module 22 and the third module 23 are formed by welding a vertical window pillar 200 in a vertical direction and a section bar 201 in a longitudinal direction, the upper ends of the first module 21, the second module 22 and the third module 23 are connected with the roof 3 in a groove welding manner, the lower ends of the first module 21, the second module 22 and the bottom frame 1 in a groove welding manner, a front vehicle door area is formed between the first module 21 and the second module 22, and a rear vehicle door area is formed between the second module 22 and the third module 23. The window upright column 200 in the vertical direction is made of thickened hollow section extruded aluminum profiles, the wall thickness of the thickened hollow section extruded aluminum profiles is 6mm, and the thickened hollow section extruded aluminum profiles have good bearing capacity.
In this embodiment, the upper end of the window pillar 200 is arc-shaped, and the end surface of the arc extends to the edge of the body of the roof 1 and is directly welded to the roof 1 side rail.
With continued reference to fig. 6, the body of the roof 3 includes an arc-shaped roof 31, a flat roof 32 integrally integrated at the front end of the arc-shaped roof 31, a roof end plate 33 integrated at the front end of the flat roof 32, and a cab mounting seat 34 welded to the roof end plate 33; the arc top 31 is formed by welding three longitudinal sectional materials, roof side beams are arranged on two sides of the arc top to ensure the transmission of longitudinal force, and the arc top is simultaneously used for being connected with the side wall window upright post 200 and forming a window frame with the window upright post 200.
A first arc-shaped connecting plate 311 located above a rear door area of the vehicle body is integrally integrated on the side of the arc-shaped roof 31, and a second arc-shaped connecting plate 321 located above a front door area of the vehicle body is integrally integrated on the side of the flat roof 32.
The radians of the first arc-shaped connecting plate 311 and the second arc-shaped connecting plate 321 are matched with the radian of the upper end of the window upright post 200; specifically, the second arc-shaped connecting plate 321 is welded between the window pillar 200 on the first module 21 and the front end window pillar 200 on the second module 22, so that the lower end surface of the second arc-shaped connecting plate 321, the window pillar 200 on the first module 21 and the window pillar 200 at the front end of the second module 22 form a front door area of the vehicle body, and the front door area of the vehicle body forms a conventional rectangular structure, thereby facilitating the installation of a front door; similarly, the first arc-shaped connecting plate 311 is welded between the rear window pillar 200 on the second module 22 and the window pillar 200 on the third module 23, so that the lower end surface of the first arc-shaped connecting plate 311, the rear window pillar 200 on the second module 21 and the window pillar 200 on the third module 23 form a rear door area of the vehicle body, and the rear door area of the vehicle body forms a conventional rectangular structure, thereby facilitating the installation of the door.
Referring to fig. 7, the upper portion of the rear end of the cab 4 is fixed to the cab mount 33 by bolts, and the bottom portion is fixed to the underframe 1 by bolts.
Referring to fig. 8 and 9, the upper end of the end wall 5 is connected with the upper end of the roof 3 in a groove welding manner, the side wall of the end wall is connected with the side wall 2 in a groove welding manner, a concave cavity 51 is formed in the upper end surface of the end wall 5, the upper hinge seat 6 is fixed in the concave cavity 51 in a riveting manner and is matched with the lower hinge seat 7 riveted on the underframe 1, so that the connection strength between the upper hinge seat and the car body is enhanced, and when the car body is larger than 12 m, the car body can also have enough connection strength.
In conclusion, the vehicle body structure has a good lightweight effect under the condition of meeting the strength requirement, and has good attraction and noise insulation performance; most of electrical equipment can be arranged below the underframe, so that the structural requirement on the upper part of the vehicle body is reduced, and the vehicle stability is improved; meanwhile, the window upright post is designed in a radian manner, so that the area of a window frame is increased, the visual field of passengers is wider, and the requirements of tour and sightseeing are met; in addition, the upper hinge seat and the lower hinge seat are connected in a riveting mode and are matched with each other, the connection strength between the upper hinge seat and the lower hinge seat and the vehicle body can be effectively enhanced, and even if the vehicle body is larger than 12 meters, the vehicle body can also have enough connection strength.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A head car body structure of a high-floor tram, comprising: the automobile side wall structure comprises an underframe, side walls, a roof, a cab, end walls, an upper hinge seat and a lower hinge seat, and is characterized in that the underframe, the side walls, the roof and the end walls are connected through welding, the cab is connected with the underframe and the roof through bolts, the upper hinge seat is connected with the end walls through rivets, and the lower hinge seat is connected with the underframe through rivets;
the body of chassis, side wall, roof, cab, headwall all adopts cavity cross section extrusion aluminium alloy tailor-welding to form, be equipped with many aluminium ribbed slab in the cavity of cavity cross section extrusion aluminium alloy, aluminium ribbed slab respectively with the upper and lower inner wall connection of cavity and the V type sound-absorbing chamber of constituteing in succession arranging each other.
2. The head car body structure of the high-floor tramcar according to claim 1, wherein the body of the underframe comprises a middle section bar, a second section bar, a first section bar and a first edge beam which are sequentially welded on one side of the middle section bar, and a third section bar, a fourth section bar and a second edge beam which are symmetrically and sequentially welded on the other side of the middle section bar, wherein a plurality of C-shaped grooves which are longitudinally distributed at intervals are uniformly integrated on the lower surfaces of the first section bar, the second section bar, the third section bar, the fourth section bar and the middle section bar, and a plurality of hanging rib plates which are longitudinally distributed at intervals are uniformly integrated on the inner side surfaces of the first edge beam and the second edge beam.
3. The overhead trolley body structure of claim 2, wherein the first side rail and the first section bar, the second side rail and the fourth section bar are connected by lap welding, and the first section bar, the second section bar, the middle section bar, the third section bar and the fourth section bar are connected by groove welding.
4. The head car body structure of the high floor tram according to claim 1, characterized in that the body of the side wall comprises a first module, a second module and a third module, the upper ends of the first module, the second module and the third module are connected with the top body in a groove welding mode, the lower ends of the first module, the second module and the third module are connected with the bottom frame body in a groove welding mode, a front car door area is formed between the first module and the second module, and a rear car door area is formed between the second module and the third module.
5. The head car body structure of a high floor tram according to claim 4 characterized in that the second and third modules are provided with vertically distributed window posts, the upper ends of the window posts are arc-shaped, and the end surfaces of the arc-shaped window posts extend to the edge of the body of the car roof to be in direct contact with the car roof.
6. The overhead car body structure of the high-floor tram as claimed in claim 1, wherein the body of the roof comprises an arc roof, a flat roof integrated with the front end of the arc roof, and a roof header integrated with the front end of the flat roof, and the cab mount is welded to the roof header.
7. The overhead trolley body structure of claim 6, wherein a first curved connecting plate is integrally formed on a side of the curved roof above a rear door zone of the trolley body, and a second curved connecting plate is integrally formed on a side of the roof above a front door zone of the trolley body.
8. The high floor tram head car body structure of claim 7 wherein the first and second arcuate connecting plates have an arc that matches the arc of the upper end of the window column.
9. The head car body structure of the high floor tram according to claim 6, characterized in that the upper part of the rear end of the cab is fixed to the cab mount by bolts, and the bottom part is fixed to the underframe by bolts.
10. The head car body structure of a high-floor tramcar according to claim 1, characterized in that the upper end of the end wall is connected with the upper end groove of the roof by groove welding, the side wall is connected with the side wall groove welding, and a cavity is opened on the upper end surface of the end wall, and the upper hinge base is riveted and fixed in the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911005094.0A CN110667617A (en) | 2019-10-22 | 2019-10-22 | Head car body structure of high-floor tramcar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911005094.0A CN110667617A (en) | 2019-10-22 | 2019-10-22 | Head car body structure of high-floor tramcar |
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| CN201911005094.0A Pending CN110667617A (en) | 2019-10-22 | 2019-10-22 | Head car body structure of high-floor tramcar |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111232002A (en) * | 2020-01-16 | 2020-06-05 | 中车株洲电力机车有限公司 | Modular rail vehicle body |
| CN112298229A (en) * | 2020-09-04 | 2021-02-02 | 中车长春轨道客车股份有限公司 | Novel aluminum alloy subway vehicle body |
| CN113306585A (en) * | 2021-07-02 | 2021-08-27 | 中车株洲电力机车有限公司 | Vehicle body structure and rail vehicle |
| CN114194232A (en) * | 2021-12-03 | 2022-03-18 | 中车唐山机车车辆有限公司 | Side wall structure, automobile body and rail vehicle |
| CN114194227A (en) * | 2021-12-03 | 2022-03-18 | 中车唐山机车车辆有限公司 | Rail vehicle based on modular design |
| CN115027514A (en) * | 2022-07-25 | 2022-09-09 | 中车青岛四方机车车辆股份有限公司 | Vehicle body structure and rail vehicle |
| CN115158379A (en) * | 2022-08-04 | 2022-10-11 | 中车大连机车车辆有限公司 | Tramcar steel-aluminum mixed ceiling |
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| CN111232002A (en) * | 2020-01-16 | 2020-06-05 | 中车株洲电力机车有限公司 | Modular rail vehicle body |
| WO2021143355A1 (en) * | 2020-01-16 | 2021-07-22 | 中车株洲电力机车有限公司 | Modular rail vehicle body |
| CN112298229A (en) * | 2020-09-04 | 2021-02-02 | 中车长春轨道客车股份有限公司 | Novel aluminum alloy subway vehicle body |
| CN113306585A (en) * | 2021-07-02 | 2021-08-27 | 中车株洲电力机车有限公司 | Vehicle body structure and rail vehicle |
| CN114194232A (en) * | 2021-12-03 | 2022-03-18 | 中车唐山机车车辆有限公司 | Side wall structure, automobile body and rail vehicle |
| CN114194227A (en) * | 2021-12-03 | 2022-03-18 | 中车唐山机车车辆有限公司 | Rail vehicle based on modular design |
| CN115027514A (en) * | 2022-07-25 | 2022-09-09 | 中车青岛四方机车车辆股份有限公司 | Vehicle body structure and rail vehicle |
| CN115027514B (en) * | 2022-07-25 | 2023-12-26 | 中车青岛四方机车车辆股份有限公司 | Car body structure and rail vehicle |
| CN115158379A (en) * | 2022-08-04 | 2022-10-11 | 中车大连机车车辆有限公司 | Tramcar steel-aluminum mixed ceiling |
| CN115158379B (en) * | 2022-08-04 | 2023-05-26 | 中车大连机车车辆有限公司 | Tram steel aluminium mixes ceiling |
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Application publication date: 20200110 |