CN111361597A - Draw beam and rail vehicle - Google Patents
Draw beam and rail vehicle Download PDFInfo
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- CN111361597A CN111361597A CN201811595240.5A CN201811595240A CN111361597A CN 111361597 A CN111361597 A CN 111361597A CN 201811595240 A CN201811595240 A CN 201811595240A CN 111361597 A CN111361597 A CN 111361597A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/20—Details; Accessories
Abstract
The application relates to the technical field of railway vehicles, in particular to a traction beam and a railway vehicle. The traction beam comprises a bottom plate, a cover plate, a first vertical plate, a second vertical plate, a coupler panel, a horizontal supporting plate and a vertical supporting plate; the surface of one side of the coupler panel is used for installing a coupler, the surface of the other side of the coupler panel is used for installing a horizontal supporting plate, the coupler panel is welded with the bottom plate, the cover plate, the first vertical plate and the second vertical plate, an installation space is formed on one side of the coupler panel where the coupler is installed, and a cavity is formed on the other side, away from the coupler, of the coupler panel; the horizontal supporting plate is positioned in the cavity and is welded with the coupler panel, the first vertical plate and the second vertical plate; the vertical supporting plate is positioned in the cavity and is connected with the cover plate, the first vertical plate and the second vertical plate in a welding mode. The draft sill can enhance the compression resistance, and can enable a vehicle body to meet the bearing requirements of a heavy compression working condition (such as a compression working condition of 3560 kN).
Description
Technical Field
The application relates to the technical field of railway vehicles, in particular to a traction beam and a railway vehicle.
Background
The common steel railway passenger car inspection standard in China comprises a subway stainless steel car body standard BS EN12663-2 and a domestic carbon steel car body execution standard TB/T1335, wherein the compression resistance index of the subway stainless steel car body standard to the car body is 800kN, and the compression resistance index of the domestic carbon steel car body execution standard to the car body is 1180 kN. However, for example, under the condition that the compression requirement is 3560kN, namely when the actual compression working condition of the vehicle body is far larger than the compression working condition of the standard requirement, the common towing beam structure in the existing railway vehicle cannot meet the requirement, so that the towing beam is easy to have the damage conditions such as exceeding the plate stress and shearing and breaking of rivets.
Disclosure of Invention
The embodiment of the application provides a draw beam and rail vehicle, and this draw beam can strengthen anti compression performance, can make the automobile body satisfy the load-bearing requirement of heavy compression operating mode (for example compression 3560kN operating mode).
According to a first aspect of the embodiment of the application, a draft sill is provided, which comprises a bottom plate, a cover plate, a first vertical plate, a second vertical plate, a coupler panel, a horizontal support plate and a vertical support plate; wherein:
the cover plate and the bottom plate are arranged oppositely along the vertical direction;
the first vertical plate and the second vertical plate are oppositely arranged and are welded between the bottom plate and the cover plate;
the coupler panel is arranged along the vertical direction, one side surface of the coupler panel is used for installing a coupler, the other side surface of the coupler panel is used for installing a horizontal supporting plate, the coupler panel is welded with the bottom plate, the cover plate, the first vertical plate and the second vertical plate, an installation space is formed on one side, where the coupler is installed, of the coupler panel, and a cavity is formed on the other side, away from the coupler, of the coupler panel;
the horizontal supporting plate is positioned in the cavity and is connected with the coupler panel, the first vertical plate and the second vertical plate in a welding mode;
the vertical supporting plate is located in the cavity and is connected with the cover plate, the first vertical plate and the second vertical plate in a welding mode.
Preferably, the horizontal support plates are provided with at least two, and at least two of the horizontal support plates are arranged in parallel.
Preferably, the length of the horizontal support plate gradually changes from the cover plate toward the bottom plate.
Preferably, the length of the horizontal support plate is gradually reduced.
Preferably, the vertical support plates are provided with at least two, and the at least two vertical support plates are arranged in parallel.
Preferably, the vertical support plate is disposed on a side of the cover plate away from the coupler face plate.
Preferably, the horizontal support plate is provided with a first lightening hole; the vertical support plate is provided with a second lightening hole; the bottom plate is provided with a third lightening hole.
Preferably, a plurality of first reinforcing ribs are welded on the surface of one side, away from the second vertical plate, of the first vertical plate, the tops of the first reinforcing ribs are welded with the cover plate, and the bottoms of the first reinforcing ribs are welded with the bottom plate;
the surface of one side, which is far away from the first vertical plate, of the second vertical plate is welded with a plurality of second reinforcing ribs, and the tops of the second reinforcing ribs are welded with the cover plate, and the bottoms of the second reinforcing ribs are welded with the bottom plate.
Preferably, anti-jumping mechanism frame bodies are arranged on the first vertical plate and the second vertical plate in the installation space and used for preventing the coupler from jumping in the vertical direction.
Preferably, a mounting hole for mounting a hook bracket is provided at the bottom of the base plate.
According to a second aspect of the embodiments of the present application, there is provided a rail vehicle including any one of the draft sill provided in the above-mentioned technical solution.
Adopt the draw beam that provides in this application embodiment, because the coupling panel and the bottom plate of draw beam, the apron, first riser and second riser welded connection, form the cavity in one side that the coupling panel deviates from the coupling, make the draw beam form the box structure at the rear side of coupling panel, the welding has horizontal support plate and vertical support plate in the cavity simultaneously, through with the coupling panel, the horizontal support plate that first riser and second riser welding are in the same place can strengthen the anti-compression performance of draw beam in the horizontal direction, through with the apron, the vertical support plate that first riser and second riser welding are in the same place can strengthen the anti-compression performance of draw beam in the vertical direction, consequently, this draw beam can strengthen anti-compression performance, can make the automobile body satisfy the requirement of bearing of the heavy compression operating mode (for example compression 3560kN operating mode).
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a draft sill according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the A-direction structure of the draft sill provided in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the draft sill provided in FIG. 1 taken along line B-B;
FIG. 4 is a schematic view of a C-direction structure of the draft sill provided in FIG. 2;
FIG. 5 is a schematic view of a D-direction structure of the draft sill provided in FIG. 2;
FIG. 6 is a schematic cross-sectional view of the draft sill provided in FIG. 2 taken along line E-E;
FIG. 7 is a schematic cross-sectional view of the draft sill provided in FIG. 3 taken along line F-F;
FIG. 8 is a schematic sectional view of the draft sill provided in FIG. 3 taken along line G-G;
FIG. 9 is a schematic cross-sectional view taken in the direction H-H of the draft sill provided in FIG. 3;
FIG. 10 is a schematic cross-sectional view of the draft sill provided in FIG. 3 taken along line J-J; .
Reference numerals:
1-a traction beam; 11-a base plate; 12-a cover plate; 13-a first riser; 14-a second riser; 15-coupler panel; 16-a horizontal support plate; 17-vertical support plates; 18-anti-jumping frame body; 19-installation space; 20-a cavity; 21-front slave seat board; 111-third lightening holes; 112-mounting holes; 131-a first reinforcing rib; 141-a second reinforcing rib; 161-a first horizontal support plate; 162-a second horizontal support plate; 163-a third horizontal support plate; 164-a first lightening hole; 171-a first vertical support plate; 172-a second vertical support plate; 173-second lightening hole.
Detailed Description
In the process of realizing the application, the inventor finds that when the conventional traction beam is used for the situation of the compression requirement of 3560kN, the traction beam is easy to have the damage situations of exceeding the standard of plate stress, shearing and breaking of rivets and the like.
To above-mentioned problem, this application embodiment provides a draw beam and rail vehicle, because the draw beam passes through coupler panel, bottom plate, apron, the welded connection of first riser and second riser and forms the box structure, the welding has horizontal support plate and vertical support plate in the cavity simultaneously, consequently, this draw beam can strengthen the resistance to compression performance, can make the automobile body satisfy the requirement of bearing of heavy compression operating mode (for example compression 3560kN operating mode).
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
Referring to fig. 1, 2, 3 and 4, the embodiment of the present application provides a draft sill 1, where the draft sill 1 is used for connecting a coupler to an underframe of a car body in a railway vehicle, and the draft sill 1 includes a bottom plate 11, a cover plate 12, a first vertical plate 13, a second vertical plate 14, a coupler panel 15, a horizontal support plate 16 and a vertical support plate 17; the bottom plate 11, the cover plate 12, the first vertical plate 13, the second vertical plate 14, the coupler panel 15, the horizontal supporting plate 16 and the vertical supporting plate 17 are all made of steel plates; wherein:
the cover plate 12 and the bottom plate 11 are arranged oppositely along the vertical direction; as shown in the structure of fig. 3 and 7, the cover plate 12 is arranged at the top of the draft sill 1, the bottom plate 11 is arranged at the bottom of the draft sill 1, and the cover plate 12 and the bottom plate 11 are oppositely arranged;
the first vertical plate 13 and the second vertical plate 14 are oppositely arranged and are welded between the bottom plate 11 and the cover plate 12; as shown in the structures of fig. 5 and 6, the first vertical plate 13 is located on the left side, the second vertical plate 14 is located on the right side, and the first vertical plate 13 and the second vertical plate 14 are oppositely arranged and are welded between the cover plate 12 and the bottom plate 11; as shown in the structure of fig. 7, the bottom plate 11, the cover plate 12, the first vertical plate 13 and the second vertical plate 14 are welded to form a rectangular cylinder structure, so as to improve the structural strength of the draft sill 1;
as shown in the structure of fig. 3, the coupler panel 15 is arranged in the vertical direction, one side surface is used for mounting a coupler, and the other side surface is used for mounting a horizontal support plate 16, the coupler panel 15 is welded with the bottom plate 11, the cover plate 12, the first vertical plate 13 and the second vertical plate 14, a mounting space 19 is formed on one side of the coupler panel 15 where the coupler is mounted, and a cavity 20 is formed on the other side of the coupler panel 15 away from the coupler; the tail part of the coupler is fixed through a coupler panel 15, so that the coupler is fixed and limited through the coupler panel 15, acting force of the coupler in the front and rear directions is borne, and bearing pressure on a draft sill is further improved through a horizontal support plate 16 welded to the other side of the coupler panel 15;
the horizontal supporting plate 16 is positioned in the cavity 20 and is connected with the coupler panel 15, the first vertical plate 13 and the second vertical plate 14 in a welding mode; the horizontal support plate 16 may be provided with at least two such as: two, three or more, and one may be further provided; when two or more horizontal support plates 16 are provided, at least two horizontal support plates 16 are disposed in parallel. As shown in the structure of fig. 3 and 7, the draft sill 1 is provided with three horizontal support plates 16 each parallel to the horizontal plane, such as: a first horizontal support plate 161, a second horizontal support plate 162, and a third horizontal support plate 163; the three horizontal supporting plates 16 can strengthen the structural strength and rigidity of the coupler panel 15, so that the overall structural strength and rigidity of the draft sill 1 are improved;
the vertical support plate 17 is located in the cavity 20 and is welded to the cover plate 12, the first vertical plate 13 and the second vertical plate 14. As shown in fig. 3 and fig. 10, two vertical support plates 17 are disposed in a cavity 20 formed by the coupler panel 15, the bottom plate 11, the cover plate 12, the first vertical plate 13, and the second vertical plate 14, such as: the first vertical support plate 171 and the second vertical support plate 172 are arranged in parallel, and the first vertical support plate 171 and the second vertical support plate 172 are welded with the cover plate 12, the first vertical plate 13 and the second vertical plate 14, so that the structural strength and the rigidity of the traction beam 1 are further improved, and the compression resistance of the traction beam 1 is improved; the vertical support plates 17 may be provided with one, two or more, and when at least two vertical support plates 17 are provided, at least two vertical support plates 17 are provided in parallel with each other, and the vertical support plates 17 are provided on the side of the cover plate 12 away from the coupler panel 15.
The bottom plate 11, the cover plate 12, the first vertical plate 13 and the second vertical plate 14 of the draft sill 1 are welded and connected to form a rectangular cylinder structure, the coupler panel 15 is arranged in the cylinder, the periphery of the coupler panel 15 is welded and connected with the bottom plate 11, the cover plate 12, the first vertical plate 13 and the second vertical plate 14, an installation space 19 for installing a coupler is formed on one side of the coupler panel 15, a cavity 20 is formed on one side of the coupler panel 15, which is far away from the coupler, so that the draft sill 1 forms a box structure on the rear side of the coupler panel 15, meanwhile, a horizontal supporting plate 16 and a vertical supporting plate 17 are welded in the cavity 20, the structural strength and rigidity of the draft sill 1 can be enhanced through the horizontal supporting plate 16 welded together with the coupler panel 15, the first vertical plate 13 and the second vertical plate 14, the compression resistance of the draft sill in the horizontal direction can be improved, and the structure of the draft sill 1 can be further enhanced through the vertical supporting plate 17 welded together with the cover plate 12, the first vertical The strength and the rigidity are high, the compression resistance of the traction beam 1 in the vertical direction can be improved, and therefore the structural strength and the rigidity of the traction beam 1 are high, the compression resistance can be enhanced, and the vehicle body can meet the bearing requirement of a heavy compression working condition (such as a compression 3560kN working condition).
In a specific embodiment, when at least two horizontal support plates 16 are provided, the length of the horizontal support plates 16 gradually changes from the cover plate 12 toward the base plate 11. As shown in the structure of fig. 3, three horizontal support plates 16, namely a first horizontal support plate 161, a second horizontal support plate 162 and a third horizontal support plate 163, are arranged in the cavity 20 of the draft sill 1, and the lengths of the three horizontal support plates 16 are gradually reduced along the direction from the cover plate 12 to the bottom plate 11; in the actual design process, the lengths of the three horizontal support plates 16 can be set according to the specific space (e.g., height, width and length) of the cavity 20, that is, the lengths of the three horizontal support plates 16 can be gradually reduced, the same length can be adopted, and the lengths can be gradually increased along the direction from the cover plate 12 to the bottom plate 11.
Through two at least horizontal backup pads 16 that cavity 20 at draw beam 1 set up, can strengthen the structural strength and the rigidity of coupling panel 15 simultaneously, can also transmit the effort that the coupling acted on coupling panel 15 to first riser 13 and second riser 14 through horizontal backup pad 16 dispersion, consequently, can further improve the structural strength and the rigidity of draw beam 1 through horizontal backup pad 16 that adds, make the effort of coupling disperse the transmission fast, avoid stress concentration, improve the anti compressibility of draw beam.
On the premise that the structural strength and rigidity meet the requirements, in order to reduce the weight of the draft sill 1 and further reduce the overall weight of the railway vehicle, the horizontal support plate 16 is provided with first lightening holes 164, as shown in the structure of fig. 3, the first horizontal support plate 161 is provided with three first lightening holes 164, the second horizontal support plate 162 is provided with two first lightening holes 164, and the third horizontal support plate 163 is provided with one first lightening hole 164; the vertical support plate 17 is provided with a second lightening hole 173, as shown in the structure of fig. 4 and 10, the first vertical support plate 171 is provided with the second lightening hole 173, and the second vertical support plate 172 is also provided with the second lightening hole 173; as shown in fig. 3 and 10, a plurality of third lightening holes 111 are provided in the bottom plate 11.
Since the first lightening holes 164 are provided in the horizontal support plate 16, the second lightening holes 173 are provided in the vertical support plate 17, and the third lightening holes 111 are provided in the floor panel 11, the weight of the draft sill 1 can be reduced by the weight-reducing holes, while saving material and reducing cost, and the weight of the entire railway vehicle can be reduced.
In order to further improve the structural strength and the rigidity of the draft sill 1 and further improve the compression resistance, a plurality of first reinforcing ribs 131 are welded on the surface of one side of the first vertical plate 13, which is away from the second vertical plate 14, the tops of the first reinforcing ribs 131 are welded with the cover plate 12, and the bottoms of the first reinforcing ribs 131 are welded with the bottom plate 11; as shown in fig. 1, 2 and 5, a plurality of parallel first reinforcing ribs 131 are arranged on a surface of the first upright plate 13 close to the coupler panel 15, which is away from the second upright plate 14, and the first reinforcing ribs 131 are of a plate-shaped structure;
a plurality of second reinforcing ribs 141 are welded on the surface of one side of the second vertical plate 14, which is away from the first vertical plate 13, the top of each second reinforcing rib 141 is welded with the cover plate 12, and the bottom of each second reinforcing rib 141 is welded with the bottom plate 11. As shown in fig. 1, 2 and 5, a plurality of second reinforcing ribs 141 arranged in parallel are welded to a surface of a side, away from the first vertical plate 13, of the second vertical plate 14 close to the coupler panel 15, and the second reinforcing ribs 141 are of a plate-shaped structure.
Through the plurality of first reinforcing ribs 131 arranged on the surface of one side of the first vertical plate 13 and the plurality of second reinforcing ribs 141 arranged on the surface of one side of the second vertical plate 14, the first vertical plate 13 and the second vertical plate 14 can be respectively fixed with the bottom plate 11 and the cover plate 12, so that the connection structure between the first vertical plate 13, the second vertical plate 14, the bottom plate 11 and the cover plate 12 is more reliable and stable, the structural strength and the rigidity of the draft sill 1 are further improved, especially when the first reinforcing ribs 131 and the second reinforcing ribs 141 are arranged near the draft sill panel 15, the structural strength and the rigidity near the draft sill panel 15 can be improved, the compression resistance of the draft sill 15 is improved, and the reliability and the safety of the draft sill 1 are further improved.
In order to prevent the coupler from jumping in the vertical direction, as shown in the structures of fig. 3 and 4, anti-jumping mechanism frame bodies 18 are arranged on the first vertical plate 13 and the second vertical plate 14 in the installation space 19, and the anti-jumping mechanism frame bodies 18 are used for preventing the coupler from jumping in the vertical direction. As shown in fig. 3, 4 and 5, the anti-jump mechanism 18 may include a plurality of plate-shaped structural members welded to the first vertical plate 13 and the second vertical plate 14, and the plurality of plate-shaped structural members are fixedly connected to each other and are formed in a shape adapted to the top of the coupler so as to vertically restrain the coupler. In the embodiment of the present application, the specific structure of the anti-jump mechanism frame body 18 may refer to fig. 3, 4, 5, 6, 8 and 9. The specific structure of the anti-jump mechanism frame body 18 is not specifically limited herein, as long as the limit of the car coupler in the vertical direction can be realized, and the specific structure can also be set according to the specific shape and parameters of the car coupler.
Because the anti-jumping mechanism frame body 18 is arranged in the installation space 19 for installing the coupler, the coupler is limited in the vertical direction through the anti-jumping mechanism frame body 18, the freedom degree of the movement of the coupler in the vertical direction is limited, the fixed connection between the coupler and the traction beam 1 is realized, even when the coupler receives a large compression force, the coupler can be prevented from jumping in the vertical direction through the anti-jumping mechanism frame body 18, the coupler can be prevented from being damaged to the traction beam 1 through limiting the jumping of the coupler in the vertical direction, and the safety and the reliability of the traction beam 1 are further improved.
On the basis of the above-mentioned various embodiments, as shown in the structure of fig. 1 and 4, the bottom of the bottom plate 11 is provided with a mounting hole 112 for mounting the hook bracket.
Because the bottom of the bottom plate 11 is provided with the mounting hole 112 for mounting the coupler bracket, the coupler bracket can be conveniently mounted on the bottom plate 11 through the mounting hole 112 when a coupler is mounted, and the mounting efficiency and the mounting convenience of the coupler bracket are improved.
As shown in fig. 3 and 4, a front slave seat plate 21 for mounting a hook is further disposed on the first upright plate 13 and the second upright plate 14 in the mounting space 19, and two front slave seat plates 21 are symmetrically disposed, one of which is disposed on the first upright plate 13 and the other is disposed on the second upright plate 14.
Example two
The embodiment of the application also provides a railway vehicle, and the railway vehicle comprises any one of the traction beams 1 provided in the embodiment.
The track vehicle adopts above-mentioned draw beam 1, can improve structural strength and rigidity through draw beam 1, and then improves the compressive resistance ability, makes track vehicle can guarantee the reliability and the security of every automobile body self when receiving higher compressive force, simultaneously, still is favorable to improving the reliability and the security of connecting between each automobile body, and then improves the reliability and the security of whole car of track vehicle.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (11)
1. A draft sill is characterized by comprising a bottom plate, a cover plate, a first vertical plate, a second vertical plate, a coupler panel, a horizontal supporting plate and a vertical supporting plate; wherein:
the cover plate and the bottom plate are arranged oppositely along the vertical direction;
the first vertical plate and the second vertical plate are oppositely arranged and are welded between the bottom plate and the cover plate;
the coupler panel is arranged along the vertical direction, one side surface of the coupler panel is used for installing a coupler, the other side surface of the coupler panel is used for installing a horizontal supporting plate, the coupler panel is welded with the bottom plate, the cover plate, the first vertical plate and the second vertical plate, an installation space is formed on one side, where the coupler is installed, of the coupler panel, and a cavity is formed on the other side, away from the coupler, of the coupler panel;
the horizontal supporting plate is positioned in the cavity and is connected with the coupler panel, the first vertical plate and the second vertical plate in a welding mode;
the vertical supporting plate is located in the cavity and is connected with the cover plate, the first vertical plate and the second vertical plate in a welding mode.
2. The draft sill according to claim 1, wherein said horizontal support plates are provided in at least two, parallel arrangement therebetween.
3. The draft sill according to claim 2, wherein said horizontal support plates have a length that gradually changes from said cover plate toward said bottom plate.
4. The draft sill, according to claim 3, wherein said horizontal support plates are tapered in length.
5. The draft sill according to claim 1, wherein said vertical support plates are provided in at least two, parallel arrangement therebetween.
6. The draft sill, according to claim 5, wherein said vertical support plate is disposed on a side of said cover plate remote from said draft gear panel.
7. The draw beam of claim 1, wherein the horizontal support plate is provided with a first lightening hole; the vertical support plate is provided with a second lightening hole; the bottom plate is provided with a third lightening hole.
8. The draft sill according to claim 1, wherein a plurality of first reinforcing ribs are welded to the surface of one side of the first vertical plate, which is away from the second vertical plate, the top of each first reinforcing rib is welded to the cover plate, and the bottom of each first reinforcing rib is welded to the bottom plate;
the surface of one side, which is far away from the first vertical plate, of the second vertical plate is welded with a plurality of second reinforcing ribs, and the tops of the second reinforcing ribs are welded with the cover plate, and the bottoms of the second reinforcing ribs are welded with the bottom plate.
9. The draft sill according to any one of claims 1 to 8, wherein an anti-bouncing mechanism frame body is provided on each of the first and second vertical plates in the installation space, and the anti-bouncing mechanism frame body is configured to prevent the coupler from bouncing in a vertical direction.
10. The draft sill according to any one of claims 1 to 8, wherein a mounting hole for mounting a hook bracket is provided at a bottom of said floor plate.
11. A rail vehicle, characterized in that it comprises a trailing beam according to any one of claims 1-10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595240.5A CN111361597B (en) | 2018-12-25 | 2018-12-25 | Draw beam and rail vehicle |
| PCT/CN2019/094193 WO2020133999A1 (en) | 2018-12-25 | 2019-07-01 | Traction beam and rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595240.5A CN111361597B (en) | 2018-12-25 | 2018-12-25 | Draw beam and rail vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111361597A true CN111361597A (en) | 2020-07-03 |
| CN111361597B CN111361597B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811595240.5A Active CN111361597B (en) | 2018-12-25 | 2018-12-25 | Draw beam and rail vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111361597B (en) |
| WO (1) | WO2020133999A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020133999A1 (en) | 2020-07-02 |
| CN111361597B (en) | 2021-06-04 |
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