CN113715853A - Transmission device for built-in bogie of railway vehicle - Google Patents
Transmission device for built-in bogie of railway vehicle Download PDFInfo
- Publication number
- CN113715853A CN113715853A CN202111128856.3A CN202111128856A CN113715853A CN 113715853 A CN113715853 A CN 113715853A CN 202111128856 A CN202111128856 A CN 202111128856A CN 113715853 A CN113715853 A CN 113715853A
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- Prior art keywords
- gear
- gear box
- coupling
- shaft
- motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
Abstract
The invention discloses a transmission device of a built-in bogie of a railway vehicle, which comprises a gear box, wherein the power input end of the gear box is configured into a structure with a cavity; the power input end of the gear box is in transmission connection with the output end of the traction motor through an input gear shaft; a diaphragm type coupling and a drum type tooth coupling are integrated in the cavity; the traction motor transmits power to the output gear through the input gear shaft, the diaphragm coupling and the drum type gear coupling and drives the axle to rotate. The transmission device breaks through the structural form limitation of the existing built-in bogie transmission device, not only can meet the installation requirement of a compact space of a built-in bogie, but also can play the displacement compensation function of a coupling because the coupling is integrated with an input shaft, and the limit rotating speed of the input end bearing selected under the structure can also meet the requirement of a high-speed working condition, thereby providing feasibility for the design of the high-speed built-in bogie transmission device of 300km/h or more.
Description
Technical Field
The invention relates to the technical field of production and processing of railway vehicle bogies, in particular to a transmission device of a built-in bogie of a railway vehicle.
Background
At present, a built-in bogie of a railway vehicle becomes an industry development trend, and a traditional structure form of 'bogie suspension type traction motor + drum type gear coupling + gear box' cannot be installed due to the fact that the installation space of a transmission device of the built-in bogie is small. In the prior art, for a built-in bogie, transmission devices adopted at home and abroad are generally divided into two forms: one is that the traction motor adopts a vehicle body suspension form, and the motor and the gear box are in transmission connection by adopting a cardan shaft; and the traction motor adopts a bogie suspension mode, the output end of the gear box adopts a hollow mode, and the large gear at the output end, the axle and the drum-shaped tooth coupling are connected together. Although the transmission function based on the built-in bogie structure can be realized by the two transmission devices in the prior art, the limit rotating speed of the universal shaft and the limit rotating speed of the output end conical bearing are difficult to break through, and the high-speed working condition application is difficult to meet.
Therefore, in view of the above technical problems, there is a need for developing a transmission device for a railway vehicle built-in bogie, which can meet the current installation requirement of compact space and can be used in high-speed operation conditions.
Disclosure of Invention
The invention aims to provide a built-in bogie transmission device of a railway vehicle, which can meet the installation requirement of compact space at present and can be used for high-speed operation working conditions.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to a transmission device of a built-in bogie of a railway vehicle, which comprises:
the power input end of the gear box is configured to be a structure with a cavity, and the power output end of the gear box is in interference connection with an axle through an output gear;
the power input end of the gear box is in transmission connection with the output end of the traction motor through an input gear shaft;
a diaphragm coupling and a drum-shaped tooth coupling are integrated in a cavity of a power input end of the gear box;
the traction motor transmits power to the output gear through the input gear shaft, the diaphragm coupling and the drum tooth coupling and drives the axle to rotate.
Furthermore, the power output end of the gear box is embedded with the output gear;
wheels are arranged at two ends of the axle;
the output gear drives the axle to rotate so as to drive the wheels to rotate.
Further, the power input end of the gear box is provided with a gear box hollow shaft;
the diaphragm coupling is integrated at one end, close to the traction motor, of the hollow shaft of the gearbox, and the diaphragm coupling is in transmission with the output end of the traction motor;
the drum-shaped gear coupling is integrated at one end, far away from the traction motor, of the hollow shaft of the gear box, and the drum-shaped gear coupling is in transmission connection with the diaphragm coupling through a connecting shaft.
Further, the diaphragm coupling comprises:
a motor side connecting plate close to the traction motor, wherein a motor side connecting bolt connected with the output end of the traction motor is installed in the center of the motor side connecting plate;
the gearbox side connecting disc is arranged on one side, far away from the traction motor, of the motor side connecting disc, extends along the radial direction of the motor side connecting disc, and two ends of the gearbox side connecting disc in the length direction extend to the edge of the motor side connecting disc; and
a set of spaced flexible laminations;
two ends of the length direction of the gear box side connecting disc are fixedly assembled with the motor side connecting disc through a group of flexible lamination groups respectively;
the traction motor drives the motor side connecting disc to rotate, and the motor side connecting disc drives the gear box side connecting disc to rotate.
Further, the flexible lamination stack comprises:
a plurality of layers of metal sheets;
the polygonal check ring is positioned on the outer side of the plurality of layers of metal sheets; and
a taper sleeve;
taper sleeves of two groups of flexible lamination groups which are arranged at opposite corners of the motor side connecting disc are embedded in the motor side connecting disc, and the taper sleeves are partially embedded in the multilayer metal sheets and the polygonal retaining ring and are fastened through bolts;
the taper sleeve of the flexible lamination stack installed at the joint of the motor side connection disc and the gear box side connection disc is embedded in the motor side connection disc and the gear box side connection disc, and the taper sleeve is partially embedded in the multilayer metal sheet and the polygonal retainer ring and fastened by bolts.
Furthermore, a certain gap is reserved between one side of the hollow shaft of the gear box, which is close to the side connecting disc of the gear box, and the side connecting disc of the gear box;
a connecting shaft cavity is formed inside the hollow shaft of the gear box, and the connecting shaft is embedded in the connecting shaft cavity;
one end, close to the gear box side connecting disc, of the connecting shaft is fixedly assembled with the gear box side connecting disc through a gear box side bolt;
the gear box side connecting disc drives the connecting shaft to rotate.
Further, the drum tooth coupling includes:
the inner gear ring is assembled and fixed with the gear box hollow shaft through a hollow shaft connecting bolt on one side of the inner gear ring close to the gear box hollow shaft;
the crowned teeth are embedded in the inner gear ring and connected with the connecting shaft through a crowned tooth connecting bolt so as to drive the crowned teeth to rotate through the connecting shaft; and
a stop ring located on an outer side of the crown tooth.
Further, the inner gear ring comprises a body and a connecting body which are integrally formed;
the cross section size of the connecting body is smaller than that of the body, and the connecting body is connected with the hollow shaft of the gear box through the hollow shaft connecting bolt;
a sealing ring is arranged at the joint of the connecting body and the connecting shaft;
a clamp spring is arranged on the outer side of the stop ring;
a rotation stopping washer is arranged at the joint of the crowned tooth connecting bolt and the crowned tooth;
and an O-shaped ring is arranged at the joint of the stop ring and the body.
In the technical scheme, the transmission device of the built-in bogie of the railway vehicle, provided by the invention, has the following beneficial effects:
the transmission device breaks through the structural form limitation of the existing built-in bogie transmission device, not only can meet the installation requirement of a compact space of a built-in bogie, but also can play the displacement compensation function of a coupling because the coupling is integrated with an input shaft, and the limit rotating speed of the input end bearing selected under the structure can also meet the requirement of a high-speed working condition, thereby providing feasibility for the design of the high-speed built-in bogie transmission device of 300km/h or more.
The traction motor of the transmission device adopts a bogie suspension mode, the input end of the gear box adopts a hollow mode, and the output end of the gear box adopts a traditional mode that an output gear is in interference fit connection with an axle, so that an input gear shaft, a drum-shaped tooth coupling and a diaphragm coupling are connected together, and the integral function of the transmission device is realized. Compared with the existing hollow form of the output end, the hollow form of the input end has great advantages in the aspect of bearing type selection, and the application condition of higher speed grade can be met.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of a transmission device of an internal bogie of a railway vehicle according to an embodiment of the invention;
fig. 2 is a cross-sectional view of a transmission device of a railway vehicle built-in bogie provided by the embodiment of the invention.
Description of reference numerals:
1. a traction motor; 2. a gear case; 3. a diaphragm type coupling; 4. a drum-shaped toothed coupling;
101. an axle; 102. a wheel;
201. a power input; 202. a power output end; 203. an axle box;
301. a motor-side land; 302. a motor side connecting bolt; 303. a gearbox side connection disc; 304. a gearbox side bolt; 305. a flexible lamination stack; 306. a taper sleeve; 307. a bolt;
401. an inner gear ring; 402. a crowned tooth attachment bolt; 403. crowned teeth; 404. an O-shaped ring; 405. a rotation stop washer; 406. a stop ring; 407. a clamp spring; 408. a seal ring; 409. a hollow shaft connecting bolt; 501. a gearbox hollow shaft; 502. and (7) connecting the shafts.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-2;
the invention relates to a transmission device of a built-in bogie of a railway vehicle, which comprises:
the power input end 201 of the gear box 2 is configured to be a structure with a cavity, and the power output end 202 of the gear box 2 is in interference connection with the axle 101 through an output gear;
the power input end 201 of the gear box 2 is in transmission connection with the output end of the traction motor 1 through an input gear shaft;
a diaphragm coupling 3 and a drum-shaped tooth coupling 4 are integrated in a cavity of a power input end 201 of the gear box 2;
the traction motor 1 transmits power to an output gear through an input gear shaft, a diaphragm coupling 3 and a crowned coupling 4, and drives the axle 101 to rotate.
Specifically, the embodiment discloses a transmission device suitable for a built-in bogie, the traction motor 1 of the device of the embodiment adopts a bogie suspension mode, a cavity is formed inside the power input end 201 of the gear box 2, the output end still adopts a traditional mode that an output gear is in interference fit connection with an axle 101, and an input gear shaft, a drum coupling 3 and a diaphragm coupling 4 are connected together, so that the overall function of the transmission device is realized.
Preferably, an output gear is embedded in the power output end 202 of the gear box 2 of the embodiment;
the output gear drives the axle 101 to rotate, so as to drive the wheels 102 to rotate.
Preferably, the power input 201 of the gearbox 2 of the present embodiment has a gearbox hollow shaft 501;
a diaphragm type coupling 3 is integrated at one end of the hollow shaft 501 of the gear box, which is close to the traction motor 1, and the diaphragm type coupling 3 is in transmission with the output end of the traction motor 1;
one end of the gear box hollow shaft 501, which is far away from the traction motor 1, is integrated with a drum-shaped gear coupling 4, and the drum-shaped gear coupling 4 is in transmission connection with the diaphragm coupling 3 through a connecting shaft 502.
Wherein, above-mentioned diaphragm coupling 3 includes:
a motor side connecting plate 301 close to the traction motor 1, wherein a motor side connecting bolt 302 connected with the output end of the traction motor 1 is installed in the center of the motor side connecting plate 301;
a gear box side connecting disc 303 installed on one side of the motor side connecting disc 301 far away from the traction motor 1, wherein the gear box side connecting disc 303 extends along the radial direction of the motor side connecting disc 301, and two ends of the gear box side connecting disc 303 in the length direction extend to the edge of the motor side connecting disc 301; and
a spaced-apart flexible lamination stack 305;
two ends of the length direction of the gear box side connecting disc 303 are fixedly assembled with the motor side connecting disc 301 through a group of flexible lamination groups 305;
the traction motor 1 drives the motor side connecting disc 301 to rotate, and the motor side connecting disc 301 drives the gear box side connecting disc 303 to rotate.
Wherein the flexible lamination stack 305 described above comprises:
a plurality of layers of metal sheets;
the polygonal check ring is positioned on the outer side of the multilayer metal sheet; and
a taper sleeve 306;
taper sleeves 306 of two groups of flexible lamination groups 305 arranged at the opposite corners of the motor side connecting disc 301 are embedded in the motor side connecting disc 301, and the taper sleeves 306 are partially embedded in the multilayer metal sheets and the polygonal retainer rings and fastened through bolts 307;
a taper sleeve 306 of a flexible lamination stack 305 mounted at the joint of the motor-side connection disc 301 and the gear box-side connection disc 303 is embedded in the motor-side connection disc 301 and the gear box-side connection disc 303, and the taper sleeve 306 is partially embedded in the multi-layered metal sheet and the polygonal collar and fastened by a bolt 307.
The coupling is an all-steel coupling with torsional rigidity and bending elasticity, and displacement compensation is realized through a metal elastic diaphragm. The coupling is composed of two half couplings, a hollow gearbox shaft 501 and fasteners. The diaphragm coupling 3 on one side is connected with the traction motor 1, and the drum-shaped toothed coupling 4 on the other side is connected with the gear box 2.
Preferably, a certain gap is reserved between one side of the hollow shaft 501 of the gear box of the embodiment, which is close to the connecting disc 303 on the side of the gear box, and the connecting disc 303 on the side of the gear box;
a connecting shaft cavity is formed inside the hollow shaft 501 of the gear box, and the connecting shaft 502 is embedded in the connecting shaft cavity;
one end, close to the gearbox side connecting disc 303, of the connecting shaft 502 is fixedly assembled with the gearbox side connecting disc 303 through a gearbox side bolt 302;
the gear box side connection disc 303 drives the connection shaft 502 to rotate.
Wherein, the above-mentioned drum toothed coupling 4 includes:
the inner gear ring 401 is assembled and fixed with the gear box hollow shaft 501 through a hollow shaft connecting bolt 409 at one side of the inner gear ring 401 close to the gear box hollow shaft 501;
a stop ring 406 located on the outer side of crown tooth 403.
More preferably:
the ring gear 401 includes a body and a connector that are integrally formed;
the section size of the connecting body is smaller than that of the body, and the connecting body is connected with a hollow shaft 501 of the gear box through a hollow shaft connecting bolt 409;
the joint of the connector and the connecting shaft 502 is provided with a sealing ring 408;
a clamp spring 407 is arranged on the outer side of the stop ring 406;
a rotation stop washer 405 is arranged at the joint of the crowned tooth connecting bolt 402 and the crowned tooth 403;
the stop ring 406 has an O-ring 404 at its connection to the body.
The traction motor 1 side diaphragm coupling 3 has a set of flexible laminations 305 including multiple layers of metal diaphragms, polygonal collars, taper sleeves 306 and bolts 307. The flexible lamination of the embodiment is alternately fixed on the motor side connecting disc 301 and the gear box side connecting disc 303 through taper sleeves 306 and bolts 307, the crowned tooth type coupling 4 is connected with a hollow shaft 501 of the gear box through end teeth of an inner gear ring 401 and a fastener, a crowned tooth 403 of the crowned tooth type coupling 4 is connected with a connecting shaft 502 through bolts and rotation stopping bolts, a transverse stop ring 406 is axially fixed through a snap spring 407, and the crowned tooth type coupling 4 is hermetically connected with an O-shaped ring 404 through a sealing ring 408.
In the technical scheme, the transmission device of the built-in bogie of the railway vehicle, provided by the invention, has the following beneficial effects:
the transmission device breaks through the structural form limitation of the existing built-in bogie transmission device, not only can meet the installation requirement of a compact space of a built-in bogie, but also can play the displacement compensation function of a coupling because the coupling is integrated with an input shaft, and the limit rotating speed of the input end bearing selected under the structure can also meet the requirement of a high-speed working condition, thereby providing feasibility for the design of the high-speed built-in bogie transmission device of 300km/h or more.
The traction motor 1 of the transmission device adopts a bogie suspension mode, the input end of a gear box adopts a hollow mode, and the output end of the gear box adopts a traditional mode that an output gear is in interference fit connection with an axle 101, so that an input gear shaft, a drum-shaped tooth coupling 3 and a diaphragm coupling 4 are connected together, and the integral function of the transmission device is realized. Compared with the existing hollow form of the output end, the hollow form of the input end has great advantages in the aspect of bearing type selection, and the application condition of higher speed grade can be met.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A railway vehicle built-in bogie transmission characterized in that the transmission comprises:
the power input end (201) of the gear box (2) is configured to be a structure with a cavity, and the power output end (202) of the gear box (2) is in interference connection with the axle (101) through an output gear;
the power input end (201) of the gear box (2) is in transmission connection with the output end of the traction motor (1) through an input gear shaft;
a diaphragm coupling (3) and a drum-shaped tooth coupling (4) are integrated in a cavity of a power input end (201) of the gear box (2);
the traction motor (1) transmits power to the output gear through the input gear shaft, the diaphragm coupling (3) and the drum gear coupling (4) and drives the axle (101) to rotate.
2. A railway vehicle internal bogie transmission as claimed in claim 1, characterised in that the power take-off (202) of the gearbox (2) is fitted with the output gear internally;
wheels (102) are mounted at two ends of the axle (101);
the output gear drives the axle (101) to rotate so as to drive the wheels (102) to rotate.
3. A railway vehicle internal bogie transmission according to claim 2 characterized in that the power input (201) of the gearbox (2) has a gearbox hollow shaft (501);
the diaphragm coupling (3) is integrated at one end, close to the traction motor (1), of the hollow gearbox shaft (501), and the diaphragm coupling (3) is in transmission connection with the output end of the traction motor (1);
the drum-shaped gear coupling (4) is integrated at one end, far away from the traction motor (1), of the gear box hollow shaft (501), and the drum-shaped gear coupling (4) is in transmission connection with the diaphragm coupling (4) through a connecting shaft (502).
4. A railway vehicle internal truck transmission according to claim 3, characterized in that the diaphragm coupling (3) comprises:
a motor side connecting disc (301) close to the traction motor (1), wherein a motor side connecting bolt (302) connected with the output end of the traction motor (1) is installed in the center of the motor side connecting disc (301);
a gearbox side connecting disc (303) installed on one side, far away from the traction motor (1), of the motor side connecting disc (301), wherein the gearbox side connecting disc (303) extends along the radial direction of the motor side connecting disc (301), and two ends of the gearbox side connecting disc (303) in the length direction extend to the edge of the motor side connecting disc (301); and
a set of spaced flexible laminations (305);
two ends of the gear box side connecting disc (303) in the length direction are fixedly assembled with the motor side connecting disc (301) through a group of flexible laminated sheets (305) respectively;
traction motor (1) drive motor side connection pad (301) rotate, motor side connection pad (301) drive gear box side connection pad (303) rotate.
5. A railway vehicle internal bogie transmission according to claim 4, characterized in that the flexible lamination stack (305) comprises:
a plurality of layers of metal sheets;
the polygonal check ring is positioned on the outer side of the plurality of layers of metal sheets; and
a taper sleeve (306);
the taper sleeves (306) of the two groups of flexible lamination groups (305) which are arranged at the opposite corners of the motor side connecting disc (301) are embedded in the motor side connecting disc (301), and the taper sleeves (306) are partially embedded in the multilayer metal sheets and the polygonal retainer ring and are fastened through bolts (307);
a taper sleeve (306) of the flexible lamination stack (305) mounted at the joint of the motor-side connection disc (301) and the gear-case-side connection disc (303) is embedded in the motor-side connection disc (301) and the gear-case-side connection disc (303), and the taper sleeve (306) is partially embedded in the multilayer metal sheet and the polygonal collar and fastened by a bolt (307).
6. The transmission of a railway vehicle built-in bogie according to claim 4, characterized in that the gearbox hollow shaft (501) is provided with a certain clearance from the gearbox side connecting disc (303) at the side close to the gearbox side connecting disc (303);
a connecting shaft cavity is formed inside the gear box hollow shaft (501), and the connecting shaft (502) is embedded in the connecting shaft cavity;
one end, close to the gear box side connecting disc (303), of the connecting shaft (502) is fixedly assembled with the gear box side connecting disc (303) through a gear box side bolt (304);
the gear box side connecting disc (303) drives the connecting shaft (502) to rotate.
7. A railway vehicle internal truck transmission according to claim 6, characterized in that the drum tooth coupling (4) comprises:
the gear box is characterized by comprising an inner gear ring (401), wherein one side, close to the gear box hollow shaft (501), of the inner gear ring (401) is fixedly assembled with the gear box hollow shaft (501) through a hollow shaft connecting bolt (409);
the crowned teeth (403) are embedded in the inner gear ring (401), and the crowned teeth (403) are connected with the connecting shaft (502) through a crowned tooth connecting bolt (402) so as to drive the crowned teeth (403) to rotate through the connecting shaft (502); and
a stop ring (406) located on an outer side of the crown tooth (403).
8. The railway vehicle internal bogie transmission of claim 7, characterized in that the inner gear ring (401) comprises an integrally formed body and connecting body;
the cross section size of the connecting body is smaller than that of the body, and the connecting body is connected with the gear box hollow shaft (501) through the hollow shaft connecting bolt (409);
a sealing ring (408) is arranged at the joint of the connecting body and the connecting shaft (502);
a clamp spring (407) is mounted on the outer side of the stop ring (406);
a rotation stopping washer (405) is mounted at the joint of the crowned tooth connecting bolt (402) and the crowned tooth (403);
the joint of the stop ring (406) and the body is provided with an O-shaped ring (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111128856.3A CN113715853A (en) | 2021-09-26 | 2021-09-26 | Transmission device for built-in bogie of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111128856.3A CN113715853A (en) | 2021-09-26 | 2021-09-26 | Transmission device for built-in bogie of railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113715853A true CN113715853A (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111128856.3A Pending CN113715853A (en) | 2021-09-26 | 2021-09-26 | Transmission device for built-in bogie of railway vehicle |
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| Country | Link |
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| CN (1) | CN113715853A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277860A (en) * | 2005-09-30 | 2008-10-01 | Kwd德雷斯登连接器有限公司 | Universal double-jointed coupling for railway vehicles |
| CN101979266A (en) * | 2010-10-26 | 2011-02-23 | 长春轨道客车股份有限公司 | Power bogie with independent wheels for 100 percent low-floor light rail vehicles |
| CN206592448U (en) * | 2017-03-06 | 2017-10-27 | 中车株洲电力机车有限公司 | A kind of driving structure and vehicle output shaft coupling of low floor vehicle |
| CN113602298A (en) * | 2021-09-13 | 2021-11-05 | 中车戚墅堰机车车辆工艺研究所有限公司 | Traction transmission system and railway vehicle |
-
2021
- 2021-09-26 CN CN202111128856.3A patent/CN113715853A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277860A (en) * | 2005-09-30 | 2008-10-01 | Kwd德雷斯登连接器有限公司 | Universal double-jointed coupling for railway vehicles |
| US20090139425A1 (en) * | 2005-09-30 | 2009-06-04 | Christoph Spensberger | Universal Double-Jointed Coupling for Railway Vehicles |
| CN101979266A (en) * | 2010-10-26 | 2011-02-23 | 长春轨道客车股份有限公司 | Power bogie with independent wheels for 100 percent low-floor light rail vehicles |
| CN206592448U (en) * | 2017-03-06 | 2017-10-27 | 中车株洲电力机车有限公司 | A kind of driving structure and vehicle output shaft coupling of low floor vehicle |
| CN113602298A (en) * | 2021-09-13 | 2021-11-05 | 中车戚墅堰机车车辆工艺研究所有限公司 | Traction transmission system and railway vehicle |
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