CN110001682A - Flat car special for railway container - Google Patents
Flat car special for railway container Download PDFInfo
- Publication number
- CN110001682A CN110001682A CN201910272661.2A CN201910272661A CN110001682A CN 110001682 A CN110001682 A CN 110001682A CN 201910272661 A CN201910272661 A CN 201910272661A CN 110001682 A CN110001682 A CN 110001682A
- Authority
- CN
- China
- Prior art keywords
- chassis
- joint
- centrepin
- car
- friction block
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D3/00—Wagons or vans
- B61D3/16—Wagons or vans adapted for carrying special loads
- B61D3/20—Wagons or vans adapted for carrying special loads for forwarding containers
-
- 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
- B61F1/08—Details
Abstract
The invention belongs to railway transportation technology field more particularly to a kind of Flat car special for railway container.The flatcar includes the multiple car bodies set gradually, and each car body includes chassis, is supported between the chassis of two adjacent car bodies by middle bogie, and one end opposite positioned at the chassis of two car bodies of end passes through an end bogies support respectively.For the present invention in the case where vehicle body transportation of equivalent amount, the present invention can reduce the quantity of bogie, and then can mitigate light weight, can save vehicle manufacture, buying and maintenance cost；In addition, the self weight of reduction is added in load-carrying, that is, it is greatly improved capacity, improves the economic benefits of transportation efficiency.
Description
Technical field
The invention belongs to railway transportation technology field more particularly to a kind of Flat car special for railway container.
Background technique
Container has many advantages, such as that goods damage is few, high-efficient, speed is fast, quickly grows in recent decades.Railway container
Freight volume quicklys increase, and the demand to railway transportation container car also constantly expands.
In the prior art, Flat car special for railway container includes at least one car body, and the chassis of each car body is all made of
Two bogies are walked to support.
In the implementation of the present invention, it is found by the applicant that at least having the disadvantage that in the prior art
In the prior art, the flatcar of walking is supported using two bogies, have biggish vehicle body self weight, it is higher from
Weight coefficient limits the weight of the container of flatcar carrying accordingly, affects the efficiency of shipment, improves containerized shipment fortune
Defeated cost.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of Flat car special for railway container, to mitigate vehicle
Body self weight, improves containerized shipment transport capacity.
The present invention through the following technical solutions to achieve the above objectives:
A kind of Flat car special for railway container, the flatcar include the multiple car bodies set gradually, and each car body is equal
Including chassis, supported between the chassis of two adjacent car bodies by middle bogie, two vehicles positioned at end
The opposite one end of the chassis of body passes through an end bogies support respectively.
Further, the chassis includes central sill and end carriage, in which:
The central sill is arranged along the length direction of the car body, and the central sill is located at the central part of the chassis；
There are two the end carriage settings, and two end carriages are located at the both ends of the central sill length direction, and, two
The middle part of the end carriage is connected with the central sill.
Further, the first bottom side bearing there are four the top settings of the bolster of the middle bogie, four described first
Bottom side bearing is symmetrical arranged with the length centerline of the chassis；
In the chassis of two adjacent car bodies, two opposite end carriages pass through respectively supports two adjacent vehicles
Four the first bottom side bearing supports on the middle bogie of the chassis of body.
Further, it is also connected by joint connection frame between the chassis of two adjacent car bodies, the joint connects
Connecing frame includes:
First joint, first arthrodesis are arranged in a car body in two adjacent car bodies
On the end of beam；
Second joint, the second joint are fixed at another car body in two adjacent car bodies
On the end of central sill；
First joint and the second joint are rotatably connected.
Further, the first joint setting is fluted, and the opening of the groove is described towards the second joint
Groove has top, bottom and the side wall for connecting the top and bottom；
The second joint is provided with protrusion, and the protrusion is arranged in the groove, the top of the groove, described convex
It rises and the bottom of the groove is rotatably connected by the first centrepin, first centrepin is vertically arranged, to realize
First joint and the second joint are rotatably connected.
Further, limiting slot is provided at the top of the side wall of first centrepin；
Pin is limited at the top of the limiting slot to pass through, the spacer pin gap setting in the limiting slot, and, it is described
Spacer pin and first centrepin are vertically arranged, in this way, the play of the first centrepin can be prevented.
Further, the groove and the raised mating spherical surfaces.
Further, the bottom of the groove is provided with cavity, is provided with the first friction from top to bottom in the cavity
Block and the second friction block, first friction block and second friction block are passed through by first centrepin, and, it is described
First friction block and convex plane cooperation, first friction block and the second friction block mating spherical surfaces, described second
Friction block and the cavity are rotatably arranged.
Further, it is provided with the first centre bore at the top center of the first bolster of the middle bogie, described
One centre bore is passed through by the second centrepin, and second centrepin is fixed at the bottom of first centrepin.
Further, the second bottom side bearing there are two the top settings of the bolster of the end bogies, two described second
Bottom side bearing is symmetrical arranged with the length centerline of the chassis；
End carriage positioned at the chassis of the car body of end is supported by two the second bottom side bearings of the end bogies.
The beneficial effects of the present invention are:
A kind of Flat car special for railway container provided by the present invention, the flatcar include set gradually in the same direction it is more
A car body, it is assumed that be N number of, each car body includes chassis, due to being turned between the chassis of two adjacent car bodies by intermediate
Frame support, one end opposite positioned at the chassis of two car bodies of end pass through an end bogies support respectively, and total N+1 turn
To frame, compared to the prior art, for the present invention in the case where vehicle body transportation of equivalent amount, the present invention can reduce bogie
Quantity, and then light weight can be mitigated, vehicle manufacture, buying and maintenance cost can be saved；In addition, the self weight of reduction is added to
In load-carrying, that is, it is greatly improved capacity, improves the economic benefits of transportation efficiency.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of Flat car special for railway container of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the middle bogie in Fig. 1；
Fig. 3 is enlarged diagram at the A in Fig. 1；
Fig. 4 is the structural schematic diagram of the joint connection frame in Fig. 1；
Fig. 5 is the structural schematic diagram of the end bogies in Fig. 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is a kind of structural schematic diagram of Flat car special for railway container of the embodiment of the present invention, in conjunction with Fig. 1, the flatcar
Including the multiple car bodies set gradually, each car body includes chassis 1, passes through centre between the chassis 1 of two adjacent car bodies
Bogie 2 supports, and one end opposite positioned at the chassis 1 of two car bodies of end passes through an end bogies 3 respectively and support.
Flat car special for railway container shown in the embodiment of the present invention, compared to the prior art, in the car body of equivalent amount
In the case where transport, the present invention can reduce the quantity of bogie, and then can mitigate light weight, can save vehicle manufacture,
Buying and maintenance cost；In addition, the self weight of reduction is added in load-carrying, that is, it is greatly improved capacity, improves the economic benefits of transportation efficiency.
For example, the embodiment of the present invention and the prior art have N (N is greater than or equal to 2) a car body, that prior art just needs
2N bogie support, and the embodiment of the present invention only needs N+1 bogie, this can greatly reduce the quantity of bogie,
And then reach above-mentioned purpose.
Specific in the embodiment of the present invention, altogether there are three car body, be followed successively by from front to back the first car body, the second car body and
Third car body, the rear end of the chassis of the chassis front end and third car body of the first car body pass through end bogies 3 and support, and first
The front end of the chassis of the chassis rear end and the second car body of car body is supported by a middle bogie 2, the chassis of the second car body
The front end of the chassis of rear end and third car body is supported by another middle bogie 2, in this way, the embodiment of the present invention only needs
4 bogies, compared with the prior art in use 6 bogies, the embodiment of the present invention can save two bogies, into
And the self weight for reducing 20% is added in load-carrying, that is, capacity can be improved and improves the economic benefits of transportation efficiency.
In conjunction with Fig. 1, the chassis 1 of the embodiment of the present invention includes central sill 1.1, end carriage 1.2 and crossbeam 1.3, in which: central sill
1.1 are arranged along the length direction of car body, and central sill 1.1 is located at the central part of chassis, and there are two the settings of end carriage 1.2, two are held
Beam 1.2 is located at the both ends of 1.1 length direction of central sill, and, the middle part of two end carriages 1.2 is connected with central sill 1.1, crossbeam
1.3 can according to need and be provided with multiple, and multiple crossbeams 1.3 are arranged on the central sill 1.1 between two end carriages 1.2.
It should be noted that due to the end for the chassis for supporting two car bodies by a middle bogie 3, in order to improve
Bearing capacity, two sections of chassis of end carriage 1.2 of the second car body is arranged to frame structure by the embodiment of the present invention, and is located at the vehicle at both ends
The end carriage 1.2 of the chassis of body can be traditional structure forms.
Fig. 2 is the structural schematic diagram of the middle bogie in Fig. 1, and Fig. 3 is enlarged diagram at the A in Fig. 1, in conjunction with Fig. 2
And Fig. 3, the middle bogie 2 of the embodiment of the present invention include the first bolster 2.1, there are four the top settings of first bolster 2.1
First bottom side bearing 2.2, four the first bottom side bearings 2.2 are symmetrical arranged with the length centerline of chassis 1；And two adjacent car bodies
In chassis, two opposite end carriages 1.2 pass through four on the middle bogie 2 of the chassis 1 of two adjacent car bodies of support respectively
A first bottom side bearing 2.2 supports.
Specifically, in conjunction with Fig. 3, for the embodiment of the present invention in two adjacent car bodies, two opposite end carriages 1.2 are opposite
Side is provided with the first body side bearer 1.4, and the first body side bearer 1.4 and the first bottom side bearing 2.2 are arranged in a one-to-one correspondence, other on each first
1.4 are held to support by corresponding first bottom side bearing 2.2, it can between the first body side bearer 1.4 and corresponding first bottom side bearing 2.2
To be provided with the adjustable wearing plate 1.5 of quantity, to realize corresponding mechanical property.
In the embodiment of the present invention, wearing plate 1.5 can be bolted on corresponding first body side bearer 1.4, and the
One body side bearer 1.4 can be directly welded on corresponding end carriage 1.2.
In conjunction with Fig. 1, in the embodiment of the present invention, also connected by joint connector 4 between the chassis of two adjacent car bodies.
Fig. 4 is the structural schematic diagram of the joint connector in Fig. 1, and in conjunction with Fig. 3 and Fig. 4, which includes:
First joint 4.1, the first joint 4.1 are fixed at the central sill 1.1 of a car body in two adjacent car bodies
End on；Second joint 4.2, second joint 4.2 are fixed at the central sill of another car body in two adjacent car bodies
On 1.1 end, the first joint 4.1 and second joint 4.2 are rotatably connected, to realize that the steering of two adjacent car bodies connects
It connects.
Since the joint connector of the embodiment of the present invention plays only the first joint, second joint and first of connection function
Centrepin, to have shorter length and lesser self weight.Since the length of joint connector is shorter, to make adjacent
The distance between two car bodies are smaller, in this way, can make adjacent two of flatcar under conditions of not changing the length of bogie
The chassis of a car body shares a middle bogie support and is possibly realized,
Further, the first joint 4.1 of the embodiment of the present invention and second joint 4.2 can be connected by the way of welding
It connects in the end of corresponding central sill 1.1.
Specifically, in conjunction with Fig. 4, the first joint 4.1 of the embodiment of the present invention is arranged fluted 4.3, the opening face of groove 4.3
To second joint 4.2, groove 4.3 has top, bottom and the side wall for connecting top and bottom；And second joint 4.2
It is provided with protrusion 4.4, protrusion 4.4 is arranged in groove 4.3, and the bottom at the top of groove 4.3, protrusion 4.4 and groove 4.3 is logical
It crosses the first centrepin 5 to be rotatably connected, the first centrepin 5 is vertically arranged, and then realizes the first joint 4.1 and second joint
4.2 are rotatably connected.
Further, in conjunction with Fig. 4, it is provided with limiting slot 6 at the top of the side wall of the first centrepin 5 of the embodiment of the present invention,
The top of limiting slot 6 is limited pin 7 and passes through, 7 gap setting of spacer pin in limiting slot 6, and, spacer pin 7 and the first centrepin
5 are vertically arranged, this is because may generate vibration during this flat car transportation, the first centrepin 5 are caused to scurry out, and limit
The setting of position pin 7 can only allow the first centrepin 5 small size play in the gap of spacer pin 7 and limiting slot 6, without scurrying out,
And then it is applicable in the vibration of vehicle.
It should be noted that limiting slot 6 and spacer pin 7 can only be arranged one group, and the two can also in the embodiment of the present invention
To be oppositely arranged, formed two groups, the embodiment of the present invention to this with no restriction.
Further, in the embodiment of the present invention, the groove 4.3 in the first joint 4.1 and the protrusion 4.4 of second joint 4.2 are adopted
With mating spherical surfaces, i.e. 4.3 side wall of groove is spherical, and the side that protrusion 4.4 and groove 4.3 match is also spherical, the two phase
Mutually cooperation, to improve the smooth degree in the first joint 4.1 and the rotation of second joint 4.2.
In conjunction with Fig. 4, in the embodiment of the present invention, the top of groove 4.3 and the top surface plane cooperation of protrusion 4.4 are rubbed with reducing
Area is wiped, the smooth degree in the first joint 4.1 and the rotation of second joint 4.2 is further increased.
In conjunction with Fig. 4, the embodiment of the present invention is provided with cavity 4.5 in the bottom of groove 4.3, sets from top to bottom in cavity 4.5
It is equipped with the first friction block 4.6 and the second friction block 4.7, the first friction block 4.6 and the second friction block 4.7 are by the first centrepin
5 pass through, and, the first friction block 4.6 and raised 4.4 planes cooperation, 4.7 mating spherical surfaces of the first friction block 4.6 and the second friction block,
Second friction block 4.7 and cavity are rotatably arranged, in this way in the case where raised 4.4 confronting grooves 4.3 rotation, the first friction block
4.6 and second friction block 4.7 can be rotated with it under the driving of frictional force, and then further increase the first joint 4.1 and second
The smooth degree that joint 4.2 rotates.
In conjunction with Fig. 4, be provided with supporting block 4.8 on the bottom of the cavity 4.5 of the embodiment of the present invention, supporting block 4.8 from down toward
On successively activity pass through the second friction block 4.7 and the first friction block 4.6, the top of supporting block 4.8 and raised 4.4 planes are matched
Close, in actual use, protrusion and the first friction block, protrusion and supporting block, the first friction block and the second friction block, the first friction
Block and supporting block and the second friction block and supporting block may generate rotation because car body rotates the external factors such as stress, road conditions,
Rotation is generated, to can further improve the first joint 4.1 and the smooth degree that second joint 4.2 rotates.
In conjunction with Fig. 4, the supporting block 4.8 of the embodiment of the present invention is provided with first through hole 4.9, and the bottom of the first centrepin 5 is living
It is dynamic to be arranged in first through hole 4.9, and the articulated truck 4 further includes the second centrepin 7, the second centrepin 7 is fixed at
The bottom of first centrepin 5.In conjunction with Fig. 2 and Fig. 4, in the embodiment of the present invention, the top of the first bolster 2.1 of middle bogie 2
The first centre bore is additionally provided at center, the first centre bore is passed through by the second centrepin 7, in this way, can real joint connector and
The connection of middle bogie, to adapt to the characteristics such as turning when vehicle body transportation.
Further, in conjunction with Fig. 4, the embodiment of the present invention is provided with the second through-hole 4.10 in the bottom of groove 4.3, and second is logical
Hole 4.10 and first through hole 4.9 communicate setting, are provided with limited block 4.11 in the second through-hole 4.10, and the top of the second centrepin 7
Portion is fixedly connected on the bottom of the first centrepin 5, and successively activity passes through first through hole 4.9, limited block for the bottom of the second centrepin 7
4.11 and second through-hole 4.10, then connected with middle bogie 2, due to being provided with limited block 4.11, and then can be to second
Centrepin 7 is supported limit, reinforces the reliability that the second centrepin 7 is connected with middle bogie 2.
In conjunction with Fig. 4, in the embodiment of the present invention, the mode that the top of the second centrepin 7 can be connected by key is mounted on recessed
The bottom of slot 4.3.
Fig. 5 is the structural schematic diagram of the end bogies in Fig. 1, and in conjunction with Fig. 5, which includes the second bolster
3.1, there are two the second bottom side bearings 3.2 for the top setting of the second bolster 3.1, and two the second bottom side bearings 3.2 are in the length of chassis 1
Heart line is symmetrical arranged, and the end carriage 1.2 for being located at the chassis 1 of the car body of end passes through two the second bottom side bearings of end bogies 3
3.2 support.
In the embodiment of the present invention, end bogies 3 and middle bogie 2 can use the model of existing bogie,
Such as turn 9, turn 8A, turn 8AG etc., difference be only that the middle bogie 2 of the embodiment of the present invention due to be will be two adjacent
The quantity of car body connection, bottom side bearing is different, and therefore, the embodiment of the present invention does not retouch the specific structure of bogie herein
It states.
Following illustrated embodiment is better embodiment of the invention, only is used to facilitate to illustrate the present invention, not to this hair
The bright limitation made under any form has usually intellectual in any technical field, if not departing from the proposed skill of the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from technical feature content of the invention, in the range of still falling within the technology of the present invention feature.
Claims (10)
1. a kind of Flat car special for railway container, which is characterized in that the flatcar includes the multiple car bodies set gradually, Mei Gesuo
Stating car body includes chassis, is supported between the chassis of two adjacent car bodies by middle bogie, positioned at the two of end
The opposite one end of the chassis of a car body passes through an end bogies support respectively.
2. Flat car special for railway container according to claim 1, which is characterized in that the chassis includes central sill and end
Beam, in which:
The central sill is arranged along the length direction of the car body, and the central sill is located at the central part of the chassis；
There are two the end carriage settings, and two end carriages are located at the both ends of the central sill length direction, and, described in two
The middle part of end carriage is connected with the central sill.
3. Flat car special for railway container according to claim 2, which is characterized in that the bolster of the middle bogie
There are four the first bottom side bearing, four first bottom side bearings to be symmetrical arranged with the length centerline of the chassis for top setting；
In the chassis of two adjacent car bodies, two opposite end carriages pass through respectively supports two adjacent car bodies
Four the first bottom side bearing supports on the middle bogie of chassis.
4. Flat car special for railway container according to claim 1, which is characterized in that the bottom of two adjacent car bodies
It is also connected by joint connection frame between frame, the joint connection frame includes:
The central sill of a car body in two adjacent car bodies is arranged in first joint, first arthrodesis
On end；
Second joint, the second joint are fixed at the central sill of another car body in two adjacent car bodies
End on；
First joint and the second joint are rotatably connected.
5. Flat car special for railway container according to claim 4, which is characterized in that first joint is provided with recessed
Slot, towards the second joint, the groove has top, bottom and by the top and bottom for the opening of the groove
The side wall of connection；
The second joint is provided with protrusion, and the protrusion is arranged in the groove, the top of the groove, the protrusion with
And the bottom of the groove is rotatably connected by the first centrepin, first centrepin is vertically arranged.
6. Flat car special for railway container according to claim 5, which is characterized in that the side wall of first centrepin
Top is provided with limiting slot；
Pin is limited at the top of the limiting slot to pass through, the spacer pin gap setting in the limiting slot, and, the limit
Pin and first centrepin are vertically arranged.
7. Flat car special for railway container according to claim 5, which is characterized in that the groove and the raised spherical surface
Cooperation.
8. Flat car special for railway container according to claim 5, which is characterized in that the bottom setting of the groove is free
Chamber is provided with the first friction block and the second friction block, first friction block and described second in the cavity from top to bottom
Friction block is passed through by first centrepin, and, first friction block and convex plane cooperation, first friction
Block and the second friction block mating spherical surfaces, second friction block and the cavity are rotatably arranged.
9. Flat car special for railway container according to claim 5, which is characterized in that the first of the middle bogie shakes
The first centre bore is provided at the top center of pillow, first centre bore is passed through by the second centrepin, second centrepin
It is fixed at the bottom of first centrepin.
10. -9 described in any item Flat car special for railway container according to claim 1, which is characterized in that the end turns to
There are two the second bottom side bearings for the top setting of the bolster of frame, and two second bottom side bearings are with the length centerline pair of the chassis
Claim setting；
End carriage positioned at the chassis of the car body of end is supported by two the second bottom side bearings of the end bogies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272661.2A CN110001682A (en) | 2019-04-04 | 2019-04-04 | Flat car special for railway container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272661.2A CN110001682A (en) | 2019-04-04 | 2019-04-04 | Flat car special for railway container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110001682A true CN110001682A (en) | 2019-07-12 |
Family
ID=67170052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910272661.2A Pending CN110001682A (en) | 2019-04-04 | 2019-04-04 | Flat car special for railway container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110001682A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271568A (en) * | 2019-07-22 | 2019-09-24 | 株洲长远智造股份有限公司 | Steel rail transport train and rail transporting method |
| RU202275U1 (en) * | 2020-08-27 | 2021-02-09 | РЕЙЛ 1520 АйПи ЛТД | Articulated wagon frame |
| CN114701531A (en) * | 2022-04-14 | 2022-07-05 | 中车长江车辆有限公司 | Joint vehicle set |
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| CN210101632U (en) * | 2019-04-04 | 2020-02-21 | 中车长江车辆有限公司 | Special flat car for railway container |
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| US4336758A (en) * | 1980-06-13 | 1982-06-29 | Amsted Industries Incorporated | Railroad car sill-articulating device member connection |
| US5560503A (en) * | 1993-12-13 | 1996-10-01 | Westinghouse Air Brake Co. | Lubricating apparatus for articulated coupling arrangement |
| US5809898A (en) * | 1997-01-30 | 1998-09-22 | Amsted Industries Incorporated | Ring seat removal system for a railcar articulate connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271568A (en) * | 2019-07-22 | 2019-09-24 | 株洲长远智造股份有限公司 | Steel rail transport train and rail transporting method |
| CN110271568B (en) * | 2019-07-22 | 2024-04-09 | 株洲长远智造股份有限公司 | Rail transport vehicle and rail transport method |
| RU202275U1 (en) * | 2020-08-27 | 2021-02-09 | РЕЙЛ 1520 АйПи ЛТД | Articulated wagon frame |
| CN114701531A (en) * | 2022-04-14 | 2022-07-05 | 中车长江车辆有限公司 | Joint vehicle set |
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