CN111071267A - Buffer beam structure for suspension type monorail train - Google Patents
Buffer beam structure for suspension type monorail train Download PDFInfo
- Publication number
- CN111071267A CN111071267A CN202010029800.1A CN202010029800A CN111071267A CN 111071267 A CN111071267 A CN 111071267A CN 202010029800 A CN202010029800 A CN 202010029800A CN 111071267 A CN111071267 A CN 111071267A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- bumper beam
- upper cover
- plate
- monorail train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims description 17
- 238000003466 welding Methods 0.000 claims abstract description 40
- 238000005452 bending Methods 0.000 claims abstract description 6
- 230000003139 buffering effect Effects 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 241001669679 Eleotris Species 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 241000826860 Trapezium Species 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
- B61B12/04—Devices for damping vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B3/00—Elevated railway systems with suspended vehicles
Abstract
A bumper beam structure for a suspended monorail train at least comprises a bumper beam upper cover plate, a bumper beam lower cover plate, a first side vertical plate and a second side vertical plate, wherein the bumper beam lower cover plate is of a flat structure, the bumper beam upper cover plate is formed by bending a lower opening section bar, the cross section of the whole lower opening section bar is of a pi shape, the front end and the rear end of the bumper beam upper cover plate are respectively of a plane structure, an inclined structure is arranged between the two ends, the rear end of the bumper beam upper cover plate is connected to the rear end of the bumper beam, the first side vertical plate and the second side vertical plate are plates and are arranged on the left side and the right side of the bumper beam upper cover plate in a relatively parallel mode, and the upper end and the lower end of the bumper beam upper cover plate and; therefore, the novel welding structure is simple in structure and low in cost, the structure of the buffer beam is adjusted and simplified, the functions of the buffer beam are met, and meanwhile, the novel welding structure has partial functions of a traction beam, and can reduce stress concentration and improve fatigue performance.
Description
Technical Field
The invention relates to the technical field of suspension type monorail trains, in particular to a buffer beam structure for a suspension type monorail train.
Background
The buffer beam is one of the most basic parts of the train, is used for connecting a sleeper beam and a coupler mounting structure, and relieves the action of traction force and impact force generated in the running process of the train so as to avoid damage to a train body structure caused by repeated impact load in the running process of the train. The bumper beam structure of mainly paying close attention to among the prior art is subway bumper beam mostly, if: patent number CN107856688B, light-weight subway car body with novel traction and bolster buffering structure. Because the subway has a large body and the bogie is arranged below the subway body, the bumper beam structure of the subway has enough space for structural design. Functionally, the subway buffer beam mainly plays a role in relieving the traction force and the impact force in the running process of the train.
The structure function of the buffer beam applied to the suspension type monorail train is greatly different from that of the buffer beam of a railway locomotive and a subway.
1. Because of the unique running mode of the suspension type monorail train, the space of the buffer beam structure is limited, the size in the length direction is small, and the buffer beam structure meeting the use performance can only be designed in the limited space.
2. Due to the particularity of the traction and bolster buffering structure, the buffering beam not only has the function of buffering traction force and impact force, but also has the function of transmitting the traction force and the impact force; therefore, the structure needs to be optimized, and the strength and the fatigue resistance of the structure need to be improved.
The buffer beam for the existing subway has a complex structure and large occupied space, and cannot be applied to the suspension type monorail train. The total width of the suspension type monorail train body is small, the available plane space of the buffer beam is relatively small, the height from the top of the train body to the bottom surface of the track is only 800mm, and the existing buffer beam cannot be directly applied.
Moreover, the bumper beam structure that current subway was used is mostly conventional web, apron panel tailor-welded structure, and its welding seam is the fillet weld, has great stress concentration after welding to fatigue properties is relatively poor. If the suspension type monorail train adopts the welding structure form, through calculation, larger stress concentration occurs at the welding position of the web plate and the upper cover plate, and fatigue cracks are generated, so that the strength of the whole traction and bolster buffering structure is weakened, the service life is shortened, and larger potential safety hazards exist.
In view of the above-mentioned drawbacks, the present inventor has studied and designed a bumper beam structure for a suspended monorail train by taking into account the experience and results of the related industries for a long time through careful research and design to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a buffer beam structure for a suspended monorail train, which is simple in structure and low in cost, adjusts and simplifies the buffer beam structure, meets the functions of the buffer beam, has partial functions of a traction beam, and can reduce stress concentration and improve fatigue performance by adopting a new welding structure.
In order to achieve the purpose, the invention discloses a buffer beam structure for a suspended monorail train, which at least comprises a buffer beam upper cover plate, a buffer beam lower cover plate, a first side vertical plate and a second side vertical plate, and is characterized in that:
the bumper beam lower cover plate is of a flat plate-shaped structure, the thickness of the plate is 10mm, the bumper beam upper cover plate is formed by bending a lower opening section bar, the cross section of the whole lower opening section bar is of a pi shape, the thickness of the plate is 10mm, the front end and the rear end of the bumper beam upper cover plate are respectively of a plane structure, an inclined structure is arranged between the two ends, the rear end of the upper cover plate is connected to the rear end of the bumper beam, the first side vertical plate and the second side vertical plate are plates, the thickness of the plate is 8mm, the first side vertical plate and the second side vertical plate are arranged on the left side and the right side of the bumper beam upper cover plate in a relatively parallel mode.
Wherein: two long round holes are symmetrically formed in two sides of the front end of the upper cover plate of the buffer beam, the aperture of each long round hole is 65mm, and the positions of the long round holes correspond to the two coupler mounting holes, so that coupler and coupler draft buffering mounting operation can be carried out as operating holes in disassembly and assembly maintenance of the draft buffering device of the suspension type monorail train.
Wherein: the width of the lower cover plate of the buffer beam is wider than that of the upper cover plate of the buffer beam, and the middle parts of the rear ends of the lower cover plate of the buffer beam and the upper cover plate of the buffer beam are inwards sunken to form a containing groove for containing the sleeper beam.
Wherein: the inclined structure at the relative middle part in front end planar structure and the both sides of rear end planar structure of buffer beam upper cover plate inwards contracts and both sides bend out connecting portion downwards, and the welding part is bent out downwards to the slope in middle, and the connecting portion of rear end planar structure is connected and is fixed in the upper surface of buffer beam lower cover plate.
Wherein: the rear end of first side riser and second side riser is square and stretches into under the bumper beam between apron and the bumper beam upper cover plate and support and lean on in the connecting portion of rear end planar structure, and the centre is trapezium structure, the last edge of first side riser and second side riser welds in the connecting portion and the welding part of bumper beam upper cover plate, and the lower extreme edge welds in the upper surface of bumper beam lower cover plate, the upper portion of first side riser and second side riser front end forms the breach that supports and lean on in the connecting portion of front end planar structure, and the lower part forms the opening that holds the draw beam, the front end of bumper beam lower cover plate is in the front end of bumper beam upper cover plate and supports and support and lean on in the draw beam.
Wherein: and the lower parts of the front ends of the first side vertical plate and the second side vertical plate are provided with the over-welding holes, and the over-welding holes are quarter round holes, so that welding deformation and stress concentration caused by welding seam superposition can be effectively avoided, and the effect of the water drainage hole is realized.
Wherein: and the middle part of the lower cover plate of the buffer beam is provided with a weight-reducing long round hole.
Wherein: still be equipped with the waterproof board, the waterproof board slope is installed by the front position in the bumper beam intracavity, the upper end of waterproof board is connected to the bumper beam upper cover plate, and both sides are connected in first side riser and second side riser.
Wherein: still be equipped with four stiffening plates, four stiffening plates are right trapezoid's shape, and inboard right-angle side welding connects to four bights of bumper beam upper cover plate, the hypotenuse of each stiffening plate is the arc and sets up in the outside.
Wherein: and the four corners of the lower cover plate of the bumper beam extend outwards to form reinforcing parts with the same shape as the reinforcing plates, so that the four corners of the upper cover plate and the lower cover plate form outwards extending reinforcing structures.
From the above, the bumper beam structure for the suspended monorail train of the invention has the following effects:
1. the suspension type monorail vehicle traction device is simple in structure and small in size, can be used for a suspension type monorail train with limited space, can relieve traction force and impact force and can also transfer traction force, and meets corresponding strength, rigidity and fatigue requirements.
2. The upper cover plate of the buffer beam structure is a lower opening type section bar bending piece, when the buffer beam is assembled and welded, welding seams of the vertical plates on two sides and the upper cover plate are butt welding seams, stress concentration is small after the butt welding seams are welded, fatigue performance is good, and therefore the whole buffer beam structure can better bear and moderate traction force and impact force, and fatigue cracks are not prone to being generated.
3. By adopting the new welding structure, the main welding seam is changed from the fillet welding seam to the butt welding seam, so that the stress concentration can be reduced, and the fatigue performance is improved.
The details of the present invention can be obtained from the following description and the attached drawings.
Drawings
Figure 1 shows an exploded view of the bumper beam structure for a suspended monorail train of the present invention.
Fig. 2 shows a schematic view of the overall structure of the present invention.
Fig. 3 shows a schematic view in the direction a of fig. 2.
Fig. 4 shows a side view of the upper deck of the bumper beam of the present invention.
1: an upper cover plate of the buffer beam; 2: a first side vertical plate; 3: a second side vertical plate; 4: a bumper beam lower cover plate; 5: a water baffle; 6: a reinforcing plate.
Detailed Description
Referring to fig. 1 to 4, a bumper beam structure for a suspended monorail train of the present invention is shown.
The bumper beam structure for the suspended monorail train at least comprises a bumper beam upper cover plate 1, a bumper beam lower cover plate 4, a first side vertical plate 2, a second side vertical plate 3 and a waterproof plate 5, the bumper beam lower cover plate 4 is of a flat plate-shaped structure, the plate thickness is 10mm, the bumper beam upper cover plate 1 is made by bending a lower opening section bar, the section of the whole lower opening section bar is pi-shaped, the plate thickness is 10mm, the front end and the rear end of the upper cover plate 1 of the buffer beam are respectively of a plane structure, an inclined structure is arranged between the two ends, the rear end is connected to the rear end of the buffer beam 4, the first side vertical plate 2 and the second side vertical plate 3 are made of plates with the thickness of 8mm, are arranged on the left side and the right side of the upper cover plate 1 of the buffer beam in a relatively parallel manner, the upper end and the lower end of the upper cover plate 1 of the buffer beam are respectively connected to the lower cover plate 4 of the buffer beam, thereby form the bumper beam structure, the whole length of this application is 1000mm, and overall structure maximum height is 340 mm.
Referring to fig. 1, two long round holes are symmetrically formed in two sides of the front end of the upper cover plate 1 of the buffer beam, the aperture of each long round hole is 65mm, and the positions of the long round holes correspond to those of the two coupler mounting holes, so that coupler and coupler draft buffering mounting operation is performed as an operation hole in disassembly and assembly maintenance of the coupler draft buffering of the suspension type monorail train.
Wherein, the width of the lower cover plate 4 of the bumper beam is wider than that of the upper cover plate 1 of the bumper beam, the middle parts of the rear ends of the lower cover plate 4 of the bumper beam and the upper cover plate 1 of the bumper beam are inwards recessed to form a containing groove for containing a sleeper beam, the two sides of the front end plane structure and the rear end plane structure of the upper cover plate 1 of the bumper beam are inwards contracted relative to the inclined structure at the middle part, the two sides are downwards bent to form connecting parts, the middle inclined part is downwards bent to form a welding part, the connecting part of the rear end plane structure is connected and fixed on the upper surface of the lower cover plate 4 of the bumper beam, the rear ends of the first side vertical plate 2 and the second side vertical plate 3 are square and extend into the space between the lower cover plate 4 of the bumper beam and the upper cover plate 1 of the bumper beam and abut against the connecting part of the rear end plane structure, the middle part is in a trapezoid structure, the, the lower end edge is welded on the upper surface of a lower cover plate 4 of the buffer beam, the upper parts of the front ends of the first side vertical plate 2 and the second side vertical plate 3 form a notch abutted against a connecting part of a front end plane structure, the lower part of the first side vertical plate forms an opening for accommodating a traction beam, the front end of the lower cover plate 4 of the buffer beam is shorter than the front end of an upper cover plate 1 of the buffer beam and abutted against the traction beam, and therefore a front-back clamping integral structure is formed, and the whole buffer beam structure is more stable.
The lower parts of the front ends of the first side vertical plate 2 and the second side vertical plate 3 are provided with the over-welding holes, and the over-welding holes are preferably quarter round holes in the figures, so that welding deformation and stress concentration caused by weld seam superposition can be effectively avoided, and the water drainage holes can be played in the traction and bolster buffer.
Wherein, the middle part of the bumper beam lower cover plate 4 is provided with a weight-reducing long round hole.
Wherein, the 5 slope of waterproof board are installed and are leaned on the front position in the bumper beam intracavity, can prevent that external water source from entering into the automobile body through the bumper beam inside, also play the effect of strengthening rib, improve the structural strength of bumper beam, the upper end of waterproof board 5 is connected to bumper beam upper cover plate 1, and both sides are connected in first side riser 2 and second side riser 3.
Wherein, still be equipped with four stiffening plates 6, four stiffening plates 6 are right trapezoid's shape, and inboard right angle limit welding connects to four bights of bumper beam upper cover plate 1, the hypotenuse of each stiffening plate 6 are the arc and set up in the outside, four bights of bumper beam lower cover plate 4 outwards extend the rib the same with 6 shapes of stiffening plate to four bights of apron all form the reinforcement structure of outside extension about, thereby effectively strengthen the roof beam body intensity of bumper beam and other parts, the reinforcement of this kind of structure can effective material saving, can also provide the joint strength when bumper beam is connected with other parts.
Therefore, the invention has the advantages that:
1. the suspension type monorail vehicle traction device is simple in structure and small in size, can be used for a suspension type monorail train with limited space, can relieve traction force and impact force and can also transfer traction force, and meets corresponding strength, rigidity and fatigue requirements.
2. The upper cover plate of the buffer beam structure is a lower opening type section bar bending piece, when the buffer beam is assembled and welded, welding seams of the vertical plates on two sides and the upper cover plate are butt welding seams, stress concentration is small after the butt welding seams are welded, fatigue performance is good, and therefore the whole buffer beam structure can better bear and moderate traction force and impact force, and fatigue cracks are not prone to being generated.
3. By adopting the new welding structure, the main welding seam is changed from the fillet welding seam to the butt welding seam, so that the stress concentration can be reduced, and the fatigue performance is improved.
It should be apparent that the foregoing description and illustrations are by way of example only and are not intended to limit the present disclosure, application or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention will include any embodiments falling within the foregoing description and the appended claims.
Claims (10)
1. The utility model provides a buffer beam structure for suspension type monorail train, includes buffer beam upper cover plate, buffer beam lower cover plate, first side riser and second side riser at least, its characterized in that:
the bumper beam lower cover plate is of a flat plate-shaped structure, the thickness of the plate is 10mm, the bumper beam upper cover plate is formed by bending a lower opening section bar, the cross section of the whole lower opening section bar is of a pi shape, the thickness of the plate is 10mm, the front end and the rear end of the bumper beam upper cover plate are respectively of a plane structure, an inclined structure is arranged between the two ends, the rear end of the upper cover plate is connected to the rear end of the bumper beam, the first side vertical plate and the second side vertical plate are plates, the thickness of the plate is 8mm, the first side vertical plate and the second side vertical plate are arranged on the left side and the right side of the bumper beam upper cover plate in a relatively parallel mode.
2. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: two long round holes are symmetrically formed in two sides of the front end of the upper cover plate of the buffer beam, the aperture of each long round hole is 65mm, and the positions of the long round holes correspond to the two coupler mounting holes, so that coupler and coupler draft buffering mounting operation can be carried out as operating holes in disassembly and assembly maintenance of the draft buffering device of the suspension type monorail train.
3. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: the width of the lower cover plate of the buffer beam is wider than that of the upper cover plate of the buffer beam, and the middle parts of the rear ends of the lower cover plate of the buffer beam and the upper cover plate of the buffer beam are inwards sunken to form a containing groove for containing the sleeper beam.
4. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: the inclined structure at the relative middle part in front end planar structure and the both sides of rear end planar structure of buffer beam upper cover plate inwards contracts and both sides bend out connecting portion downwards, and the welding part is bent out downwards to the slope in middle, and the connecting portion of rear end planar structure is connected and is fixed in the upper surface of buffer beam lower cover plate.
5. The bumper beam structure for a suspended monorail train of claim 4, wherein: the rear end of first side riser and second side riser is square and stretches into under the bumper beam between apron and the bumper beam upper cover plate and support and lean on in the connecting portion of rear end planar structure, and the centre is trapezium structure, the last edge of first side riser and second side riser welds in the connecting portion and the welding part of bumper beam upper cover plate, and the lower extreme edge welds in the upper surface of bumper beam lower cover plate, the upper portion of first side riser and second side riser front end forms the breach that supports and lean on in the connecting portion of front end planar structure, and the lower part forms the opening that holds the draw beam, the front end of bumper beam lower cover plate is in the front end of bumper beam upper cover plate and supports and support and lean on in the draw beam.
6. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: and the lower parts of the front ends of the first side vertical plate and the second side vertical plate are provided with the over-welding holes, and the over-welding holes are quarter round holes, so that welding deformation and stress concentration caused by welding seam superposition can be effectively avoided, and the effect of the water drainage hole is realized.
7. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: and the middle part of the lower cover plate of the buffer beam is provided with a weight-reducing long round hole.
8. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: still be equipped with the waterproof board, the waterproof board slope is installed by the front position in the bumper beam intracavity, the upper end of waterproof board is connected to the bumper beam upper cover plate, and both sides are connected in first side riser and second side riser.
9. A bumper beam structure for a suspended monorail train as defined in claim 1, wherein: still be equipped with four stiffening plates, four stiffening plates are right trapezoid's shape, and inboard right-angle side welding connects to four bights of bumper beam upper cover plate, the hypotenuse of each stiffening plate is the arc and sets up in the outside.
10. A bumper beam structure for a suspended monorail train as defined in claim 9, wherein: and the four corners of the lower cover plate of the bumper beam extend outwards to form reinforcing parts with the same shape as the reinforcing plates, so that the four corners of the upper cover plate and the lower cover plate form outwards extending reinforcing structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029800.1A CN111071267A (en) | 2020-01-13 | 2020-01-13 | Buffer beam structure for suspension type monorail train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029800.1A CN111071267A (en) | 2020-01-13 | 2020-01-13 | Buffer beam structure for suspension type monorail train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111071267A true CN111071267A (en) | 2020-04-28 |
Family
ID=70322959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010029800.1A Pending CN111071267A (en) | 2020-01-13 | 2020-01-13 | Buffer beam structure for suspension type monorail train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111071267A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3017637A1 (en) * | 1980-05-08 | 1981-11-12 | Neuhäuser KG, 4670 Lünen | TENSIONING DEVICE |
| CN105059297A (en) * | 2015-08-29 | 2015-11-18 | 中国北车集团大连机车车辆有限公司 | Aluminum alloy locomotive traction buffering structure |
| CN107901938A (en) * | 2017-11-14 | 2018-04-13 | 中车长春轨道客车股份有限公司 | The pillow pulling buffering apparatus of full aluminium rail vehicle |
| CN110422195A (en) * | 2019-09-17 | 2019-11-08 | 中铁工程机械研究设计院有限公司 | Pillow pulling for suspension monorail delays structure |
| CN212289814U (en) * | 2020-01-13 | 2021-01-05 | 中铁工程机械研究设计院有限公司 | Buffer beam structure for suspension type monorail train |
-
2020
- 2020-01-13 CN CN202010029800.1A patent/CN111071267A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3017637A1 (en) * | 1980-05-08 | 1981-11-12 | Neuhäuser KG, 4670 Lünen | TENSIONING DEVICE |
| CN105059297A (en) * | 2015-08-29 | 2015-11-18 | 中国北车集团大连机车车辆有限公司 | Aluminum alloy locomotive traction buffering structure |
| CN107901938A (en) * | 2017-11-14 | 2018-04-13 | 中车长春轨道客车股份有限公司 | The pillow pulling buffering apparatus of full aluminium rail vehicle |
| CN110422195A (en) * | 2019-09-17 | 2019-11-08 | 中铁工程机械研究设计院有限公司 | Pillow pulling for suspension monorail delays structure |
| CN212289814U (en) * | 2020-01-13 | 2021-01-05 | 中铁工程机械研究设计院有限公司 | Buffer beam structure for suspension type monorail train |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103832446A (en) | Railway vehicle body chassis structure | |
| CN103085832B (en) | Rail car body bolster and job operation thereof | |
| CN201494452U (en) | Vehicle top and side wall connecting structure of railway vehicle | |
| CN113291342B (en) | Rail vehicle and chassis thereof | |
| CN212289814U (en) | Buffer beam structure for suspension type monorail train | |
| CN203543998U (en) | Side beam for truck frame of urban rail | |
| CN213168079U (en) | Front end chassis, automobile body chassis and rail vehicle | |
| CN107554543B (en) | Rail vehicle and articulated tramcar bogie thereof | |
| CN105691457A (en) | Connecting structure for automobile engine room longitudinal beam and sub frame longitudinal beam | |
| CN111071267A (en) | Buffer beam structure for suspension type monorail train | |
| CN110422195B (en) | Traction and bolster buffering structure for suspension type monorail train | |
| CN210680732U (en) | Traction and bolster buffering structure for suspension type monorail train | |
| CN210458795U (en) | Suspension type track beam, suspension type track beam system and air traffic system | |
| CN111361592B (en) | Rail vehicle and vehicle body and end underframe thereof | |
| CN111959548A (en) | Rail vehicle and chassis transition structure for connecting high-low floor thereof | |
| CN103332201A (en) | Metro car roof structure without boundary beam | |
| CN106080646A (en) | Low-floor rail vehicle truck end sill and be provided with the bogie of this end carriage | |
| CN207403746U (en) | Low-floor tramcar drivers' cab chassis | |
| RU2388632C1 (en) | Car bogie bolster | |
| CN205971349U (en) | Articulated formula rail vehicle bogie frame of low -floor and bogie | |
| CN210234957U (en) | Sleeper beam and side beam connecting structure and railway wagon | |
| CN214215794U (en) | Rail vehicle chassis structure and rail vehicle | |
| CN114084182A (en) | Open wagon underframe without side beam and end beam | |
| RU188273U1 (en) | Platform car frame | |
| CN214874824U (en) | Asymmetric sleeper beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |