CN106696980A - Swing bolster for railway express freight car bogie - Google Patents
Swing bolster for railway express freight car bogie Download PDFInfo
- Publication number
- CN106696980A CN106696980A CN201710058578.6A CN201710058578A CN106696980A CN 106696980 A CN106696980 A CN 106696980A CN 201710058578 A CN201710058578 A CN 201710058578A CN 106696980 A CN106696980 A CN 106696980A
- Authority
- CN
- China
- Prior art keywords
- bolster
- metal pad
- rubber metal
- cover plate
- mounting seat
- 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.)
- Granted
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Classifications
-
- 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
-
- 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
- B61F5/08—Bolster supports or mountings incorporating rubber springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The invention discloses a swing bolster for a railway express freight car bogie. The swing bolster comprises a bolster upper cover plate, a bolster lower cover plate, a bolster web plate, a pair of side bearing boxes and a pair of secondary rubber reactor mounting seats, wherein the side bearing boxes are arranged on two sides of the bolster upper cover plate, and the secondary rubber reactor mounting seats are positioned at two ends of the bolster web plate. The upper surfaces of the secondary rubber reactor mounting seats are in butt joint with the lower surfaces of two ends of the bolster upper cover plate, mounting seat web plate end faces of the secondary rubber reactor mounting seats are in butt joint with two end faces of the bolster web plate, and lower end faces of the secondary rubber reactor mounting seats are in butt joint with two end faces of the bolster lower cover plate. The secondary rubber reactor mounting seats of a forging replace a welding structure with actual stress exceeding allowable stress, and the strength of the secondary rubber reactor mounting seats is improved. The height of the rear end of each secondary rubber reactor mounting seat is smaller than that of the front end of the secondary rubber reactor mounting seat, so that more portions of secondary rubber reactors are exposed, the radiating speed of the secondary rubber reactors is increased, and the radiating performance of the secondary rubber reactors is improved.
Description
Technical field
The present invention relates to railway goods train bogie technical field, and in particular to the railway of scooter 160km/h is fast when a kind of
Van bogie bolster.
Background technology
At present during design railway rapid speed freight car bogie bolster, the purpose high to reach lightweight and fatigue reliability is shaken
Pillow agent structure typically uses plate welding structure.In plate welding structure, the allowable stress of welded seam area is lower than mother metal, it is impossible to
Meet the requirement of design standard.In the prior art, when nearby stress exceedes allowable stress to welded seam area, typically there are two kinds for the treatment of
Mode, one is increase sheet material thickness of slab or structural member profile height, but this method can cause bolster weight to increase；Another kind is to adopt
With performance rate sheet material higher, but this method causes sheet material purchase cost and the processing cost to increase, welding difficulty increase.
As Chinese utility model patent (publication number CN202541558U, publication date 2012.11.21) discloses a kind of quick
The bolster of railway goods train bogie, bolster is convex configuration, using ball center plate, bolt hole is provided with side bearing, and traction is drawn
Pole socket is arranged on gooseneck bracket inner side under bolster, is welded using corner connection mode with bolster web and lower cover.The bolster is integrally used
Sheet material is welded so that the stress of commissure is larger, and its end is also rubber metal pad mounting seat without two.
The content of the invention
Deficiency of the purpose of the present invention aiming at above-mentioned technology, there is provided one kind increases in the case where bolster weight is not increased
The intensity of big bolster, improvement two are the railway red ball bogie bolster of rubber metal pad heat dispersion.
To achieve the above object, the railway red ball bogie bolster designed by the present invention, including bolster upper cover plate,
Bolster lower cover, bolster web and it is arranged on a pair of side bearing boxes of bolster upper cover plate both sides；
Also include being located at bolster web two ends a pair two are rubber metal pad mounting seat, and a pair two is the upper of rubber metal pad mounting seat
Surface is docked with the lower surface at bolster upper cover plate two ends, is for a pair two the mounting seat web end face and bolster abdomen of rubber metal pad mounting seat
Plate both ends of the surface are docked, and are for a pair two that the lower surface end face of rubber metal pad mounting seat is docked with bolster lower cover both ends of the surface；
The pair of two is that the leading section of rubber metal pad mounting seat is provided with that to extend vertically through the two of leading section be rubber metal pad mounting hole,
And be for a pair two that the rearward end of rubber metal pad mounting seat is distributed relative to bolster in skew symmetry；
On the bolster upper cover plate and to face two be that two are provided through at the position of rubber metal pad mounting hole is rubber metal pad
The location hole of convex navel, is provided with for the spacing spacing ring set of convex navel on the location hole；The pair of two is that rubber metal pad is installed
The rear end lower surface of seat is welded with the second drawing pull bar seat.
Further, the pair of two be rubber metal pad mounting seat rearward end highly less than the leading section highly, and institute
State arc transition between leading section and the rearward end.
Further, the bolster upper cover plate includes one piece of front shroud, one piece of back shroud and one piece of matrix of downward indent
Cover plate, the matrix cover plate two ends are integral with the front shroud and the back shroud butt welding shape respectively；The matrix cover plate
Reinforcement gusset is welded between the side of lower surface two and the bolster web, the bottom surface of the matrix cover plate is welded with cartridge pad
Plate.
Further, the pair of two be the two of rubber metal pad mounting seat be rubber metal pad mounting hole upper surface be provided with it is described
The two of bolster upper cover plate lower surface welding are rubber metal pad backing plate, and described two is to be provided with rubber metal pad backing plate and the location hole phase
Correspondence and the backing plate through hole of connection.
Further, it is that rubber metal pad is installed that the second drawing pull bar seat is welded on described two by drawing pull bar seat base plate
On the lower surface in base rear end portion.
Further, the side bearing box encloses welding and is formed by two U-shaped plates, and the side bearing cassette bottom portion passes through side bearing box pad
Plate weld is welded on the bolster upper cover plate, and between the transverse slat outer surface of each U-shaped plate and the bolster upper cover plate
There is side bearing box gusset.
Further, the two sides of the bolster web are welded with the second transverse hydraulic shock absorber mounting seat, two institutes
The second transverse hydraulic shock absorber mounting seat is stated to be distributed relative to the bolster web skew symmetry.
Further, the bolster lower cover two ends are welded with a pair second horizontal stopping seats.
Compared with prior art, the present invention has advantages below：
1st, two using forging are that rubber metal pad mounting seat replaces actual stress to exceed the welding structure of allowable stress, and improving should
The intensity at position.Because original welding portion replaces via mother metal, its allowable stress also accordingly brings up to the level of mother metal,
Although the stress at this is not reduced, because the allowable stress at the position has been improved, therefore do not changing structure at this
Under the premise of, i.e., the intensity of bolster is improve in the case where not increasing weight, also not improving timber intensity grade；
2nd, two be rubber metal pad mounting seat rearward end highly less than leading section highly, i.e., used between leading section and rearward end
Variable cross-section is designed, and makes two to be that rubber metal pad has more positions to expose, to improve two radiating rates for being rubber metal pad, so as to improve
Two is the heat dispersion of rubber metal pad；
3rd, using the bolster that middle part is recessed, advantageously reduce cartridge to rail level highly, that is, reduce the center of gravity of vehicle.
Brief description of the drawings
Fig. 1 is railway red ball bogie bolster dimensional structure diagram of the present invention；
Fig. 2 looks up direction dimensional structure diagram for Fig. 1's；
Fig. 3 be Fig. 1 in two be rubber metal pad and two be rubber metal pad mounting seat mounting structure schematic diagram.
Each part numbers are as follows in figure：
Bolster upper cover plate 310, location hole 311, spacing ring set 312, front shroud 313, back shroud 314, matrix cover plate 315
(wherein：Strengthen gusset 315a, bottom surface 315b), bolster lower cover 320, bolster web 330, side bearing box 340, (its of U-shaped plate 341
In：Transverse slat 341a), side bearing box backing plate 342, side bearing box gusset 343, cartridge backing plate 350, two be rubber metal pad mounting seat 360, upper table
Face 361, mounting seat web 362, lower surface 363, leading section 364, two are that rubber metal pad mounting hole 365, rearward end 366, two are rubber
Glue heap backing plate 367 is (wherein：Backing plate through hole 367a), the second drawing pull bar seat 370, drawing pull bar horizontal liquid of seat base plate 371, second
The horizontal stopping seat 390, two of pressure damper mounting seat 380, second is rubber metal pad 400, convex navel 410.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Railway red ball bogie bolster as shown in Figure 1, including bolster upper cover plate 310, bolster lower cover 320,
Bolster web 330, a pair of side bearing boxes 340 for being arranged on the both sides of bolster upper cover plate 310 and a pair positioned at the two ends of bolster web 330
Two is rubber metal pad mounting seat 360.
In the present embodiment bolster be the recessed box girder construction in middle part, i.e. bolster upper cover plate 310 include one piece of front shroud 313,
The end of one piece of back shroud 314 and one piece of matrix cover plate 315 of downward indent, front shroud 313 and back shroud 314 is relative to bolster
Arranged in skew symmetry, using the bolster that middle part is recessed, advantageously reduce cartridge to rail level highly, that is, reduce the center of gravity of vehicle.It is recessed
The two ends of type cover plate 315 are integral with front shroud 313 and the butt welding shape of back shroud 314 respectively, and front shroud is used in the present embodiment
313 and the two ends of back shroud 314 are thick, the design form of the intermediate thin of matrix cover plate 315, use at splicing welding joint variable cross-section design with
Ensure the natural transition of wall thickness, and reinforcement gusset is welded between the side of 315 lower surface of matrix cover plate two and bolster web 330
315a, increases the rigidity of whole bolster；In addition, the bottom surface 315b of matrix cover plate 315 is welded with cartridge by circumferential weld or plug welding
Backing plate 350, is used to ensure the accuracy that center bearing parts are installed.
With reference to shown in Fig. 2, it is forging that two is rubber metal pad mounting seat 360, is for a pair two the upper surface of rubber metal pad mounting seat 360
361 dock with the lower surface at the two ends of bolster upper cover plate 310, are for a pair two the end face of mounting seat web 362 of rubber metal pad mounting seat 360
Docked with the both ends of the surface of bolster web 330, be for a pair two the end face of lower surface 363 and bolster lower cover 320 of rubber metal pad mounting seat 360
Both ends of the surface are docked.I.e. one two be rubber metal pad mounting seat 360 upper surface 361 and the one end of bolster upper cover plate 310 lower surface pair
Connect weldering, this two be rubber metal pad mounting seat 360 the end face of mounting seat web 362 and bolster web 330 end face butt welding, this two
It is the end face butt welding of the end face of lower surface 363 with bolster lower cover 320 of rubber metal pad mounting seat 360；Another two is rubber
The upper surface 361 of heap mounting seat 360 and the lower surface butt welding of the other end of bolster upper cover plate 310, this two is rubber metal pad mounting seat
360 end face of mounting seat web 362 and the other end butt welding of bolster web 330, this two be rubber metal pad mounting seat 360 under
The other end butt welding of the end face of surface 363 and bolster lower cover 320；So that two is the lower surface 363 of rubber metal pad mounting seat 360
Integral with the butt welding shape of bolster lower cover 320, two is the mounting seat web 362 and bolster web of rubber metal pad mounting seat 360
330 butt welding shapes are integral.
It is that rubber metal pad mounting seat 360 replaces actual stress to exceed the welding of allowable stress that the two of forging is used in the present embodiment
Structure, improves the intensity at the position.Because original welding portion replaces via mother metal, its allowable stress also accordingly brings up to
The level of mother metal, although the stress at this is not reduced, but because the allowable stress at the position has been improved, therefore do not changing
At this on the premise of structure, i.e., the intensity of bolster is improve in the case where not increasing weight, also not improving timber intensity grade.
It is for a pair two that the leading section 364 of rubber metal pad mounting seat 360 is provided with and extends vertically through leading section 364 with reference to shown in Fig. 3
Two is rubber metal pad mounting hole 365, on bolster upper cover plate 310 and to face two be to be provided with the position of rubber metal pad mounting hole 365
It is the location hole 311 of the convex navel 410 of rubber metal pad 400 through two, is provided with location hole 311 for the spacing spacing ring of convex navel 410
Set 312；Meanwhile, two is that the upper surface of rubber metal pad mounting hole 365 is provided with the lower surface of bolster upper cover plate 310 by circumferential weld or plug
The two of weldering welding are rubber metal pad backing plate 367, and two is that and connection corresponding with location hole 311 is provided with rubber metal pad backing plate 367
Backing plate through hole 367a, two is that rubber metal pad backing plate 367 is used to ensure that two is the accuracy that rubber metal pad is installed；Two are provided with the present embodiment
Individual location hole 311 correspond to two two convex navels 410 for being rubber metal pad.In addition, being for a pair two the rearward end of rubber metal pad mounting seat 360
366 are distributed also relative to bolster in skew symmetry, i.e., rearward end 366 is corresponding in the end that skew symmetry is arranged with bolster upper cover plate 310
Welding, and be for a pair two rubber metal pad mounting seat 360 rearward end 366 be welded with the second drawing pull bar seat 370, the second drawing pull bar
It is on the lower surface of the rearward end 366 of rubber metal pad mounting seat 360 that seat 370 is welded on two by drawing pull bar seat base plate 371；This implementation
In example, drawing pull bar seat base plate 371 is circumferential weld with the weld seam of the lower surface of rearward end 366, and is provided with big plug welding hole, from
And improve the bonding strength of drawing pull bar seat 370.
Two be rubber metal pad lower end be located in architecturally, upper end be arranged on the two of bolster end and be in rubber metal pad mounting seat 360,
And its top contacts with bolster upper cover plate 310.It is that rubber metal pad mounting seat 360 is designed to typically by two to reduce cartridge highly
Sleeve-shaped, but can so cause two to be that rubber metal pad radiating is difficult.Therefore, two it is rubber metal pad mounting seat 360 in the present embodiment
The height of rearward end 366 is designed, i.e. front end between leading section 364 and rearward end 366 less than the height of leading section 364 using variable cross-section
Arc transition is used between portion 364 and rearward end 366, makes two to be that rubber metal pad there are more positions to expose, be rubber to improve two
The radiating rate of heap, so as to improve two heat dispersions for being rubber metal pad.
Side bearing box 340 encloses welding and is formed by two U-shaped plates 341, and the bottom of side bearing box 340 is adopted by side bearing box backing plate 342
It is welded on bolster upper cover plate 310 with circumferential weld or plug welding, is used to ensure the accuracy that bottom side bearing parts are installed；And each U
Side bearing box gusset 343 is welded between the transverse slat 341a outer surfaces of template 341 and bolster upper cover plate 310, is used to increase and is entirely shaken
The rigidity of pillow；In addition, the two sides of bolster web 330 are welded with the second transverse hydraulic shock absorber mounting seat 380, two second
Transverse hydraulic shock absorber mounting seat 380 is distributed relative to the skew symmetry of bolster web 330；Meanwhile, the welding of the two ends of bolster lower cover 320
There are a pair second horizontal second horizontal stopping seat 390 of stopping seat 390, i.e., to be welded on the one end of bolster lower cover 320, another
Second horizontal stopping seat 390 is welded on the other end of bolster lower cover 320.
Claims (8)
1. a kind of railway red ball bogie bolster, including bolster upper cover plate (310), bolster lower cover (320), bolster abdomen
Plate (330) and it is arranged on a pair of side bearing boxes (340) of bolster upper cover plate (310) both sides, it is characterised in that：
It is rubber metal pad mounting seat (360) also including being located at a pair two of bolster web (330) two ends, a pair two is that rubber metal pad is installed
The upper surface (361) of seat (360) is docked with the lower surface at bolster upper cover plate (310) two ends, and a pair two is rubber metal pad mounting seat
(360) mounting seat web (362) end face is docked with bolster web (330) both ends of the surface, and a pair two is rubber metal pad mounting seat (360)
Lower surface (363) end face docked with bolster lower cover (320) both ends of the surface；
The pair of two is that the leading section (364) of rubber metal pad mounting seat (360) is provided with that to extend vertically through the two of leading section (364) be rubber
Glue heap mounting hole (365), and be for a pair two rubber metal pad mounting seat (360) rearward end (366) relative to bolster in skew symmetry point
Cloth；
On the bolster upper cover plate (310) and to face two be to be provided through two at the position of rubber metal pad mounting hole (365) to be
The location hole (311) of rubber metal pad (400) convex navel (410), is provided with spacing for convex navel (410) on the location hole (311)
Spacing ring set (312)；The pair of two is that rearward end (366) lower surfaces of rubber metal pad mounting seat (360) is welded with the second traction
Draw-bar seat (370).
2. railway red ball bogie bolster according to claim 1, it is characterised in that：The pair of two is rubber metal pad
The rearward end (366) of mounting seat (360) highly less than the leading section (364) height, and the leading section (364) with it is described after
Arc transition between end (366).
3. railway red ball bogie bolster according to claim 1, it is characterised in that：The bolster upper cover plate
(310) it is described recessed including one piece of front shroud (313), one piece of back shroud (314) and one piece of matrix cover plate (315) of downward indent
Type cover plate (315) two ends are integral with the front shroud (313) and the back shroud (314) butt welding shape respectively；The matrix
Reinforcement gusset (315a), the matrix cover plate are welded between the side of cover plate (315) lower surface two and the bolster web (330)
(315) bottom surface (315b) is welded with cartridge backing plate (350).
4. the railway red ball bogie bolster according to claim 1 or 2 or 3, it is characterised in that：The pair of two are
The two of rubber metal pad mounting seat (360) are that rubber metal pad mounting hole (365) upper surface is provided with and bolster upper cover plate (310) following table
The two of face welding are rubber metal pad backing plate (367), and described two is to be provided with rubber metal pad backing plate (367) and the location hole (311)
Corresponding and connection backing plate through hole (367a).
5. the railway red ball bogie bolster according to claim 1 or 2 or 3, it is characterised in that：Second traction
It is rubber metal pad mounting seat (360) rearward end (366) that draw-bar seat (370) is welded on described two by drawing pull bar seat base plate (371)
Lower surface on.
6. the railway red ball bogie bolster according to claim 1 or 2 or 3, it is characterised in that：The side bearing box
(340) enclose welding by two U-shaped plates (341) to be formed, side bearing box (340) bottom is welded by side bearing box backing plate (342)
On the bolster upper cover plate (310), and each U-shaped plate (341) transverse slat (341a) outer surface and the bolster on cover
Side bearing box gusset (343) is welded between plate (310).
7. the railway red ball bogie bolster according to claim 1 or 2 or 3, it is characterised in that：The bolster web
(330) two sides are welded with the second transverse hydraulic shock absorber mounting seat (380), two the second transverse hydraulic shock absorbers
Mounting seat (380) is distributed relative to bolster web (330) skew symmetry.
8. the railway red ball bogie bolster according to claim 1 or 2 or 3, it is characterised in that：The bolster lower cover
Plate (320) two ends are welded with a pair second horizontal stopping seats (390).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058578.6A CN106696980B (en) | 2017-01-23 | 2017-01-23 | Railway red ball bogie bolster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058578.6A CN106696980B (en) | 2017-01-23 | 2017-01-23 | Railway red ball bogie bolster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106696980A true CN106696980A (en) | 2017-05-24 |
| CN106696980B CN106696980B (en) | 2018-11-30 |
Family
ID=58910226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710058578.6A Active CN106696980B (en) | 2017-01-23 | 2017-01-23 | Railway red ball bogie bolster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106696980B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406931A (en) * | 2020-11-27 | 2021-02-26 | 中车长江铜陵车辆有限公司 | High-performance railway wagon swing bolster structure and bogie |
| CN112406930A (en) * | 2020-11-27 | 2021-02-26 | 中车长江铜陵车辆有限公司 | Swing bolster of bogie |
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|---|---|---|---|---|
| KR100315626B1 (en) * | 1999-12-16 | 2001-12-12 | 박건오 | Side bearing of bolster for railroad car trucks |
| CA2510057A1 (en) * | 2005-06-16 | 2006-12-16 | National Steel Car Limited | Truck bolster |
| CN102556097A (en) * | 2011-01-01 | 2012-07-11 | 齐齐哈尔轨道交通装备有限责任公司 | Central suspension device and high-speed truck bogie with same |
| CN102658824A (en) * | 2012-05-04 | 2012-09-12 | 济南轨道交通装备有限责任公司 | Bolster of express railway freight car bogie |
| CN204323378U (en) * | 2014-12-03 | 2015-05-13 | 南车石家庄车辆有限公司 | A kind of truck bolster adapting to height of railway freight-car coupler and reduce |
| CN206456372U (en) * | 2017-01-23 | 2017-09-01 | 中车长江车辆有限公司 | Railway red ball bogie bolster |
-
2017
- 2017-01-23 CN CN201710058578.6A patent/CN106696980B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100315626B1 (en) * | 1999-12-16 | 2001-12-12 | 박건오 | Side bearing of bolster for railroad car trucks |
| CA2510057A1 (en) * | 2005-06-16 | 2006-12-16 | National Steel Car Limited | Truck bolster |
| CN102556097A (en) * | 2011-01-01 | 2012-07-11 | 齐齐哈尔轨道交通装备有限责任公司 | Central suspension device and high-speed truck bogie with same |
| CN102658824A (en) * | 2012-05-04 | 2012-09-12 | 济南轨道交通装备有限责任公司 | Bolster of express railway freight car bogie |
| CN204323378U (en) * | 2014-12-03 | 2015-05-13 | 南车石家庄车辆有限公司 | A kind of truck bolster adapting to height of railway freight-car coupler and reduce |
| CN206456372U (en) * | 2017-01-23 | 2017-09-01 | 中车长江车辆有限公司 | Railway red ball bogie bolster |
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| 傅茂海等: "160km/h高速货车转向架方案及其动力学性能分析", 《铁道车辆》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406931A (en) * | 2020-11-27 | 2021-02-26 | 中车长江铜陵车辆有限公司 | High-performance railway wagon swing bolster structure and bogie |
| CN112406930A (en) * | 2020-11-27 | 2021-02-26 | 中车长江铜陵车辆有限公司 | Swing bolster of bogie |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106696980B (en) | 2018-11-30 |
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