CN107891715B - Railway running gear and road and railway dual-purpose vehicle - Google Patents
Railway running gear and road and railway dual-purpose vehicle Download PDFInfo
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- CN107891715B CN107891715B CN201711130665.4A CN201711130665A CN107891715B CN 107891715 B CN107891715 B CN 107891715B CN 201711130665 A CN201711130665 A CN 201711130665A CN 107891715 B CN107891715 B CN 107891715B
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- shock absorber
- push rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
- B60F1/00—Vehicles for use both on rail and on road; Conversions therefor
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Abstract
The invention discloses a railway running gear and a road and railway dual-purpose vehicle. The railway walking part comprises a primary frame, a wheel set axle box positioning device, a driving device, a braking device, a secondary suspension traction device and a lifting device. A first tie frame is arranged between the first tie spring and the second tie spring, and a second tie frame is arranged between the second tie spring and the lifting device. The lifting device is of a cross type and takes the form of an electric push rod. The invention solves the problems of slow running speed, heavy weight, poor running stability and large occupied space under the vehicle in the prior art.
Description
Technical Field
The invention relates to the field of transportation machinery, in particular to a railway running part and a road-railway dual-purpose vehicle.
Background
At present, the running part applied to the road-railway dual-purpose vehicle at home is mostly in a two-axle bogie form, and has the characteristics of low running speed, heavy weight, poor running stability, large occupied space under the vehicle and the like, and the running speed is up to 80 km/h.
The research and development of a novel walking part applied to a road-railway dual-purpose vehicle solves the defects of low running speed, heavy weight, poor running stability and large occupied space under the vehicle in the prior art, and solves the problem to be solved urgently at present.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a railway running gear and convertible car of highway railway, solves the operating speed among the prior art slow, heavy, the operation stationarity is poor, occupies the big problem of space under the car.
The technical scheme provided by the invention is that the railway running part comprises a primary framework, a wheel set axle box positioning device, a driving device, a braking device, a secondary suspension traction device and a lifting device,
the tie frame comprises side beams and cross beams;
the wheel set axle box positioning device comprises wheels, an axle, a vertical shock absorber, a primary lifting crane and a primary spring, wherein the wheels are arranged on the axle, the vertical shock absorber is respectively arranged on the outer sides of two ends of the axle, the primary spring is respectively arranged on two sides of the end part of the axle, the primary lifting crane is respectively arranged on two ends of the axle, the vertical shock absorber is arranged on the outer side of the side beam, the primary spring is arranged below the side beam, and the primary lifting crane is hung on the outer side of the side beam;
the driving device is used for driving the axle to rotate;
the braking device is arranged on the axle;
the secondary suspension traction device comprises a secondary framework, a secondary lifting crane, a secondary spring, a transverse stop, a balancing rod and a transverse shock absorber, wherein the secondary spring is arranged below four ends of the secondary framework respectively, the secondary spring is installed on the cross beam, the secondary lifting crane is arranged below the secondary framework oppositely and is installed on the cross beam, the transverse shock absorber is arranged below the secondary spring and is installed on the side beam, the balancing rod is arranged below the secondary lifting crane and is installed on the cross beam, and the transverse stop is fixedly connected with the secondary lifting crane;
the lifting device comprises a first lifting connecting rod, a second lifting connecting rod, an electric push rod, a push rod guide pillar, an electric push rod motor, a first vehicle body mounting seat, a second vehicle body mounting seat and a third vehicle body mounting seat, wherein the first lifting connecting rod and the second lifting connecting rod are hinged in a cross mode, the first vehicle body mounting seat is arranged at the upper end of the first lifting connecting rod, the second vehicle body mounting seat is arranged at the upper end of the second lifting connecting rod, the lower ends of the first lifting connecting rod and the second lifting connecting rod are respectively mounted on the secondary suspension traction device, the lower end of the electric push rod is mounted on the secondary suspension traction device, and the upper end of the electric push rod is fixedly connected with the third vehicle body mounting seat through the push rod guide pillar.
Furthermore, the primary frame further comprises a vertical shock absorber seat, a transverse shock absorber seat, a primary spring seat and a secondary spring seat, wherein the vertical shock absorber seat is symmetrically arranged on the outer side of the side beam, the transverse shock absorber seat is symmetrically arranged at the top end of the side beam, the primary spring seat is symmetrically arranged below the side beam, the secondary spring seat is symmetrically arranged above the cross beam, the vertical shock absorber is fixedly arranged on the vertical shock absorber seat, the transverse shock absorber is fixedly arranged on the transverse shock absorber seat, the primary spring is fixedly arranged on the primary spring seat, the secondary spring is fixedly arranged on the secondary spring seat, and the primary lifting crane is hung on the side beam through the vertical shock absorber seat.
Furthermore, the first system framework further comprises a lifting stop seat and a lifting stop traction seat which are oppositely arranged on the cross beam, and the second system lifting crane is fixedly installed between the lifting stop seat and the lifting stop traction seat.
Furthermore, the balance rod is a double balance rod, and the balance rod is fixedly installed on the cross beam through the lifting stop traction seat.
Further, the driving device comprises a gear box, a coupling and a traction motor, the gear box is connected with the axle, and the gear box is connected with the traction motor through the coupling.
Furthermore, one is the framework still including setting up same gear box on the crossbeam hangs the seat and traction motor seat, the gear box passes through the gear box hangs the seat in on the crossbeam, traction motor passes through the traction motor seat hang in on the crossbeam.
Further, the braking device comprises a brake disc and a brake clamp, the brake clamp is mounted on the gear box, and the brake disc is mounted on the axle.
Further, the brake disc is a pneumatic caliper disc.
Further, an electric push rod seat and an electric push rod motor seat are further arranged on the secondary system framework, the electric push rod is fixedly installed on the electric push rod seat, and the electric push rod motor is fixedly installed on the electric push rod motor seat.
The invention also provides a dual-purpose vehicle for roads and railways, which comprises a vehicle body, wherein the railway running part is arranged on the vehicle body.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) the invention improves the existing single-axle bogie structure by optimization, adopts a two-system framework structure, namely a first-system framework is arranged between a first-system spring and a second-system spring, and a second-system framework is arranged between the second-system spring and a lifting device, applies the concept of locomotive design to the dual-purpose vehicle for the highway and the railway, simplifies the structure of a running part, improves the running speed of the dual-purpose vehicle for the highway and the railway, can reach 120km/h of the highest running speed, ensures that the whole vehicle has better curve trafficability in a railway state, and simultaneously lightens the weight of the running part, so that the dual-purpose vehicle for the highway and the railway has larger load-carrying space.
(2) The first lifting connecting rod and the second lifting connecting rod in the lifting device are designed to be in a cross shape, so that the vertical lifting of the railway running part is realized, and the longitudinal space occupied by the running part is effectively reduced.
(3) The electric push rod is arranged in the lifting device, so that the speed of the road-railway dual-purpose vehicle can be controlled to be 3-10 mm/s when the two modes are switched, and the integral structure of the walking part is simplified by using an electric pushing mode.
(4) The braking device is arranged on the gear box, so that the installation space of the braking device is effectively reduced, and the space of the running part under the vehicle is reduced.
(5) Through setting up draw gear into the traction of two balancing poles, the effectual nodding action that has restrained single-axle bogie structure makes the vehicle have higher stability.
(6) The first-series lifting crane and the vertical shock absorber seat are integrated, and the second-series lifting crane and the transverse stopping block are integrated, so that the structure of the walking part is simplified, and the weight is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a system of frames according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a wheel-set axle box locating apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a secondary suspension traction device in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a lifting device according to an embodiment of the present invention.
Wherein 1-a system of frames, 2-a wheel-set axle box positioning device, 50-a driving device, 51-a braking device, 3-a secondary suspension traction device, 4-a lifting device, 5-a side beam, 6-a cross beam, 7-a lifting stop seat, 8-a lifting stop traction seat, 9-a secondary spring seat, 10-a traction motor seat, 11-a system of spring seats, 12-a vertical damper seat, 13-a gear box hanging seat, 14-a transverse damper seat, 15-a wheel, 16-an axle, 17-an axle box body, 18-a vertical damper, 19-a system of hanging, 20-a system of springs, 21-a gear box, 22-a coupling, 23-a traction motor and 24-a brake disc, 25-brake caliper, 26-secondary frame, 27-secondary spring, 28-balance bar, 29-secondary lifting crane, 30-transverse stop, 31-transverse damper, 32-first lifting connecting rod mounting seat, 33-second lifting connecting rod mounting seat, 34-electric push rod seat, 35-electric push rod motor seat, 36-first lifting connecting rod, 43-second lifting connecting rod, 37-electric push rod, 38-push rod guide column, 39-electric push rod motor, 40-second vehicle body mounting seat, 41-first vehicle body mounting seat and 42-third vehicle body mounting seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the railway running gear disclosed by the invention comprises a primary frame 1, a wheel-set axle box positioning device 2, a driving device 50, a braking device 51, a secondary suspension traction device 3 and a lifting device 4.
Specifically, as shown in fig. 2, the primary frame 1 is disposed between the primary spring 20 and the secondary spring 27, and includes a side beam 5 and a cross beam 6, and further includes mounting seats for mounting each of the wheel-pair axle box positioning device 2, the driving device 50, the braking device 51 and the secondary suspension traction device 3, and specifically includes two vertical shock absorber seats 12 disposed outside the side beam 5, two lateral shock absorber seats 14 disposed opposite to the end portions of the side beam 5, four primary spring seats 11 symmetrically arranged below the side beams 5, four secondary spring seats 9 symmetrically arranged above the cross beams 6, a lifting stop seat 7 arranged on one of the cross beams 6, a lifting stop traction seat 8 arranged on the other cross beam 6 opposite to the lifting stop seat 7, the left side and the right side of the lifting stop seat 8 are respectively provided with a gear box hanging seat 13 and a traction motor seat 10. In this embodiment, the truss is a box-type welded "port" structure.
As shown in fig. 3, the wheel-set axle box positioning device 2 includes a wheel 15, an axle 16, a vertical shock absorber 18, a first lifting crane 19 and a first spring 20, specifically, the wheel 15 is connected with the axle 16 in an interference fit manner, the vertical shock absorber 18 and the first lifting crane 19 are disposed on the outer sides of the two ends of the axle 16, the first spring 20 is disposed on each of the two sides of the two ends of the axle 16, and an axle box 17 is further disposed on the axle 16 on the outer side of the wheel 15. The vertical shock absorber 18 is arranged on the vertical shock absorber base 12, the primary lifting crane 19 is hung on the vertical shock absorber base 12 when the dual-purpose vehicle for the highway and railway is integrally lifted, and the primary spring 20 is arranged on the primary spring seat 11.
As shown in fig. 3, the driving device 50 is used for driving the axle 16 to rotate, and includes a gear box 21, a coupling 22, and a traction motor 23. The gearbox 21 is connected to the axle 16 and suspended from the gearbox hanger 13 by a gearbox hanger (not shown). The gear box 21 is connected with the traction motor 23 through a coupling 22, and the sufficient displacement capacity is ensured. The traction motor 23 is mounted in a suspension manner and is mounted on the traction motor base 10.
As shown in fig. 3, the brake device 51 is provided on the axle 16, and includes a brake disk 24 and a brake caliper 25. The brake clamp 25 is mounted on the gear case 21, saving mounting space. The brake disk 24 is mounted on the axle 16 by a tension sleeve, and in this embodiment, the brake disk 24 is a pneumatic caliper disk. According to the invention, the braking clamp 25 is arranged on the gear box 21, so that the installation space of the braking device 51 is effectively reduced, and the space of the walking part under the vehicle is reduced.
As shown in fig. 4, the secondary suspension traction device 3 includes a secondary frame 26, a secondary lifting hanger 29, a secondary spring 27, a transverse stopper 30, a balance bar 28 and a transverse damper 31, specifically, the secondary springs 27 are respectively disposed below four ends of the secondary frame 26, and the secondary springs 27 are mounted on the secondary spring seat 11. And transverse dampers 31 are respectively arranged below two opposite secondary springs 27, and the transverse dampers 31 are installed on the transverse damper bases 14. A secondary lifting hook 29 is oppositely arranged below the secondary framework 26, and the secondary lifting hook 29 is arranged between the lifting stop seat 7 and the lifting stop traction seat 8. The balance rod 28 is arranged below the secondary lifting crane 29, the balance rod 28 is installed on the lifting stop traction seat 8, and in the embodiment, the balance rod 28 is a double balance rod, so that the nodding action of the single-axle bogie structure is effectively inhibited, and the vehicle has higher stability. The transverse stop 30 is fixedly connected with the secondary lifting hanger 29.
As shown in fig. 5, the lifting device 4 includes a first lifting link 36, a second lifting link 43, an electric push rod 37, a push rod guide post 38, an electric push rod motor 39, a first vehicle body mount 41, a second vehicle body mount 40, and a third vehicle body mount 42. The first lifting link 36 is cross-hinged with the second lifting link 43, the upper end of the first lifting link 36 is provided with a first vehicle body mounting seat 41, the upper end of the second lifting link 43 is provided with a second vehicle body mounting seat 40, and the lower ends of the first lifting link 36 and the second lifting link 43 are respectively mounted on the first lifting link mounting seat 32 and the second lifting link mounting seat 33. The lower end of the electric push rod 37 is mounted on the electric push rod seat 34, and the upper end of the electric push rod 37 is fixedly connected with the third vehicle body mounting seat 42 through the push rod guide post 38. The electric push rod motor 39 is installed on the electric push rod motor base 35. During operation, the electric push rod 37 rises to drive the third vehicle body mounting seat to rise, so as to provide power for lifting the whole vehicle, and the vehicle body is lifted through the first lifting connecting rod 36 and the second lifting connecting rod 43.
According to the invention, the first lifting connecting rod 36 and the second lifting connecting rod 43 in the lifting device are designed into a cross shape, so that the vertical lifting of the railway running gear is realized, and the longitudinal space occupied by the running gear is effectively reduced. The electric push rod 37 is arranged, so that the speed of the road-railway dual-purpose vehicle can be controlled to be 3-10 mm/s when the two modes are switched, and the integral structure of the walking part is simplified by using an electric pushing mode.
The invention also discloses a dual-purpose vehicle for roads and railways, which comprises a vehicle body, wherein the railway running part is arranged on the vehicle body. Specifically, the railway running gear is fixedly connected to the vehicle body underframe via a first vehicle body mounting seat 41, a second vehicle body mounting seat 40, and a third vehicle body mounting seat 42.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) the invention improves the existing single-axle bogie structure by optimization, adopts a two-system framework structure, namely a first-system framework is arranged between a first-system spring and a second-system spring, and a second-system framework is arranged between the second-system spring and a lifting device, applies the concept of locomotive design to the dual-purpose vehicle for the highway and the railway, simplifies the structure of a running part, improves the running speed of the dual-purpose vehicle for the highway and the railway, can reach 120km/h of the highest running speed, ensures that the whole vehicle has better curve trafficability in a railway state, and simultaneously lightens the weight of the running part, so that the dual-purpose vehicle for the highway and the railway has larger load-carrying space.
(2) The first lifting connecting rod and the second lifting connecting rod in the lifting device are designed to be in a cross shape, so that the vertical lifting of the railway running part is realized, and the longitudinal space occupied by the running part is effectively reduced.
(3) The electric push rod is arranged in the lifting device, so that the speed of the road-railway dual-purpose vehicle can be controlled to be 3-10 mm/s when the two modes are switched, and the integral structure of the walking part is simplified by using an electric pushing mode.
(4) The braking device is arranged on the gear box, so that the installation space of the braking device is effectively reduced, and the space of the running part under the vehicle is reduced.
(5) Through setting up draw gear into the traction of two balancing poles, the effectual nodding action that has restrained single-axle bogie structure makes the vehicle have higher stability.
(6) The first-series lifting crane and the vertical shock absorber seat are integrated, and the second-series lifting crane and the transverse stopping block are integrated, so that the structure of the walking part is simplified, and the weight is reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A railway running gear is characterized by comprising a primary frame, a wheel set axle box positioning device, a driving device, a braking device, a secondary suspension traction device and a lifting device,
the tie frame comprises side beams and cross beams;
the wheel set axle box positioning device comprises wheels, an axle, a vertical shock absorber, a primary lifting crane and a primary spring, wherein the wheels are arranged on the axle, the vertical shock absorber is respectively arranged on the outer sides of two ends of the axle, the primary spring is respectively arranged on two sides of the end part of the axle, the primary lifting crane is respectively arranged on two ends of the axle, the vertical shock absorber is arranged on the outer side of the side beam, the primary spring is arranged below the side beam, and the primary lifting crane is hung on the outer side of the side beam;
the driving device is used for driving the axle to rotate;
the braking device is arranged on the axle;
the secondary suspension traction device comprises a secondary framework, a secondary lifting crane, a secondary spring, a transverse stop, a balancing rod and a transverse shock absorber, wherein the secondary spring is arranged below four ends of the secondary framework respectively, the secondary spring is installed on the cross beam, the secondary lifting crane is arranged below the secondary framework oppositely and is installed on the cross beam, the transverse shock absorber is arranged below the secondary spring and is installed on the side beam, the balancing rod is arranged below the secondary lifting crane and is installed on the cross beam, and the transverse stop is fixedly connected with the secondary lifting crane;
the lifting device comprises a first lifting connecting rod, a second lifting connecting rod, an electric push rod, a push rod guide pillar, an electric push rod motor, a first vehicle body mounting seat, a second vehicle body mounting seat and a third vehicle body mounting seat, wherein the first lifting connecting rod and the second lifting connecting rod are hinged in a cross mode, the first vehicle body mounting seat is arranged at the upper end of the first lifting connecting rod, the second vehicle body mounting seat is arranged at the upper end of the second lifting connecting rod, the lower ends of the first lifting connecting rod and the second lifting connecting rod are respectively mounted on the secondary suspension traction device, the lower end of the electric push rod is mounted on the secondary suspension traction device, and the upper end of the electric push rod is fixedly connected with the third vehicle body mounting seat through the push rod guide pillar.
2. The railway running gear according to claim 1, wherein the primary frame further comprises a vertical shock absorber seat, a transverse shock absorber seat, a primary spring seat and a secondary spring seat, the vertical shock absorber seat is symmetrically arranged on the outer side of the side beam, the transverse shock absorber seat is symmetrically arranged on the top end of the side beam, the primary spring seat is symmetrically arranged below the side beam, the secondary spring seat is symmetrically arranged above the cross beam, the vertical shock absorber is fixedly arranged on the vertical shock absorber seat, the transverse shock absorber is fixedly arranged on the transverse shock absorber seat, the primary spring is fixedly arranged on the primary spring seat, the secondary spring is fixedly arranged on the secondary spring seat, and the primary lifting crane is suspended on the side beam through the vertical shock absorber seat.
3. The railway running gear of claim 1, wherein the primary frame further comprises a lift stop seat and a lift stop traction seat oppositely disposed on the cross member, and the secondary lifting crane is fixedly mounted between the lift stop seat and the lift stop traction seat.
4. The railway running gear of claim 3, wherein the spreader beam is a double spreader beam, the spreader beam being fixedly mounted to the transom by the lift stop traction mounts.
5. The railway running gear of claim 1 wherein the drive means comprises a gearbox, a coupling and a traction motor, the gearbox being connected to the axle and the gearbox being connected to the traction motor via the coupling.
6. The railway running gear of claim 5, wherein the train of frames further comprises a gearbox mount and a traction motor mount disposed on the same beam, the gearbox being suspended from the beam by the gearbox mount and the traction motor being suspended from the beam by the traction motor mount.
7. The railway running gear of claim 5 wherein the braking device comprises a brake disc and a brake caliper, the brake caliper being mounted on the gear box, the brake disc being mounted on the axle.
8. The railway running gear according to claim 7, wherein the brake disc is a pneumatic caliper disc.
9. The railway running gear according to claim 1, wherein the secondary frame is further provided with an electric push rod seat and an electric push rod motor seat, the electric push rod is fixedly mounted on the electric push rod seat, and a motor of the electric push rod is fixedly mounted on the electric push rod motor seat.
10. An amphibian comprising a body, further comprising a railway running gear as claimed in any one of claims 1 to 9, the railway running gear being mounted on the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130665.4A CN107891715B (en) | 2017-11-15 | 2017-11-15 | Railway running gear and road and railway dual-purpose vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130665.4A CN107891715B (en) | 2017-11-15 | 2017-11-15 | Railway running gear and road and railway dual-purpose vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107891715A CN107891715A (en) | 2018-04-10 |
| CN107891715B true CN107891715B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711130665.4A Active CN107891715B (en) | 2017-11-15 | 2017-11-15 | Railway running gear and road and railway dual-purpose vehicle |
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| CN (1) | CN107891715B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115817080B (en) * | 2022-12-02 | 2024-04-19 | 中铁二院工程集团有限责任公司 | Highway wheel-track toothed rail three-purpose vehicle for mountain toothed rail traffic system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5186109A (en) * | 1991-10-16 | 1993-02-16 | Harsco Corporation | Side shift railway guide wheel apparatus for rail/highway conversion with V-shaped automatic centering surfaces for centering vehicle relative to the rails |
| JP2008137572A (en) * | 2006-12-05 | 2008-06-19 | Aichi Corp | Vehicle for both road and track |
| EP2241457A1 (en) * | 2009-04-17 | 2010-10-20 | Otto Schmidt | Device for running on rails and corresponding vehicle |
| CN202573686U (en) * | 2012-05-09 | 2012-12-05 | 南车四方车辆有限公司 | Four-wheel guiding device and road-rail car |
| CN104875766B (en) * | 2015-06-12 | 2017-06-30 | 广州电力机车有限公司 | A kind of low-floor tramcar bogie |
| CN105501011B (en) * | 2015-12-22 | 2017-10-10 | 常州市瑞泰工程机械有限公司 | Road rail vehicle railway running gear |
| CN205601849U (en) * | 2016-05-12 | 2016-09-28 | 中车唐山机车车辆有限公司 | Non - power truck |
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2017
- 2017-11-15 CN CN201711130665.4A patent/CN107891715B/en active Active
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Effective date of registration: 20210716 Address after: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee after: Qingdao CRRC Sifang Rail Vehicle Co.,Ltd. Address before: 266111 Hongping Road, Chengyang District, Qingdao, Shandong Province, No. 9 Patentee before: CRRC SIFANG Co.,Ltd. |
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