CN113997964A - Train drag increasing and reducing device based on vortex generator - Google Patents
Train drag increasing and reducing device based on vortex generator Download PDFInfo
- Publication number
- CN113997964A CN113997964A CN202111432133.2A CN202111432133A CN113997964A CN 113997964 A CN113997964 A CN 113997964A CN 202111432133 A CN202111432133 A CN 202111432133A CN 113997964 A CN113997964 A CN 113997964A
- Authority
- CN
- China
- Prior art keywords
- train
- vortex
- generator
- vortex generator
- car
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/02—Construction details of vehicle bodies reducing air resistance by modifying contour ; Constructional features for fast vehicles sustaining sudden variations of atmospheric pressure, e.g. when crossing in tunnels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a train resistance increasing and decreasing device based on a vortex generator, which comprises: the vortex generators are arranged on the two sides of the train symmetrically, the vortex generators are arranged on the head train and the tail train respectively, the vortex generators are perpendicular to the train streamline area train shell, each vortex generator is provided with a sliding control mechanism, each vortex generator is arranged at the train streamline area train shell in a rising or contracting mode through the corresponding sliding control mechanism, and each vortex generator is provided with a rotating mechanism used for adjusting the angle between the corresponding vortex generator and the train center line. The invention can realize the control of the tail car resistance from the angle of the tail vortex control by a method of weakening or enhancing the strength of the tail vortex, and simultaneously, the vortex generator arranged on the head car can break the streamline form of the train and increase the resistance of the head car, thereby realizing the increase and the reduction of the whole train.
Description
Technical Field
The invention relates to the technical field of high-speed trains, in particular to a train drag increasing and decreasing device based on a vortex generator.
Background
With the increase of the speed of the train, some aerodynamic problems of the train during high-speed operation are also highlighted. For example, the aerodynamic drag of a train, the magnitude of which is proportional to the square of the train's speed of travel. With the increasing of the running speed of the train, the proportion of the aerodynamic resistance in the power required for driving the train to move forward is increasing, so that how to reduce the aerodynamic resistance of the train is necessary to be researched to reduce the energy consumption of the train. The existing train drag reduction technical scheme mainly smoothly spreads around the surface of a train, such as a lengthened head train streamline form, a sunken pantograph and the like, but the effect brought by the drag reduction scheme gradually approaches to saturation.
On the other hand, when the running speed of the train reaches 400km/h, the braking distance is increased, the energy consumption required by braking is increased, and the development of an auxiliary braking mode is urgently needed. The existing auxiliary braking modes such as a wind resistance braking plate and the like are difficult to accurately control resistance, the instantaneous resistance increase is too large, a human body is easy to generate uncomfortable feeling, the braking plate is easy to exceed the limit of a vehicle, and the overhaul and maintenance work of equipment is increased.
Disclosure of Invention
The invention provides a train resistance increasing and decreasing device based on a vortex generator, and aims to provide a train resistance increasing and decreasing device which can realize resistance reduction when a train runs and can realize resistance increase when the train brakes.
In order to achieve the above object, an embodiment of the present invention provides a train drag increasing and decreasing device based on a vortex generator, including:
the vortex generators are arranged on the two sides of the train symmetrically, the vortex generators are arranged on the head train and the tail train respectively, the vortex generators are perpendicular to the train streamline area train shell, each vortex generator is provided with a sliding control mechanism, each vortex generator is arranged at the train streamline area train shell in a rising or contracting mode through the corresponding sliding control mechanism, and each vortex generator is provided with a rotating mechanism used for adjusting the angle between the corresponding vortex generator and the train center line.
The train head train and the train tail train are provided with four vortex generators.
When the train resistance increasing and decreasing device based on the vortex generators is in a resistance reducing state, the vortex generators of the train head car are contracted and arranged in the train streamline type regional car shell; the vortex generator of the train tail car is arranged outside the train streamline area car shell in a lifting mode, and the included angle between the vortex generator of the train tail car and the center line of the train is 50 degrees.
When the train resistance increasing and decreasing device based on the vortex generators is in a resistance increasing state, the vortex generators of the train head car are lifted and arranged outside a train streamline area car shell, the included angles between the two vortex generators positioned in front of the train head car and the center line of the train are-90 degrees, and the included angles between the two vortex generators positioned behind the train head car and the center line of the train are 90 degrees; the vortex generator of the train tail car is arranged outside the train streamline area car shell in a lifting mode, and the included angle between the vortex generator of the train tail car and the center line of the train is-50 degrees.
Wherein, the vortex generator is a triangular structure or a trapezoidal plate-shaped structure.
The vortex generator is of a right-angle trapezoid plate-shaped structure, the maximum length of the bottom edge of the vortex generator is 0.65m, the maximum height of the vortex generator is 0.4m, and the acute angle of the vortex generator is 35 degrees.
The shell of the streamline area of the train is provided with a plurality of grooves, and the vortex generators are arranged in the grooves in a sliding manner.
Wherein the slide control mechanism includes: the control device comprises a control device lower support, a spoiler support, an electric motor, a ball screw and a control device upper support, wherein the control device upper support is arranged on the inner side of a train streamline type regional car shell, the control device lower support is fixedly arranged in the train streamline type regional car shell, two ends of the control device lower support are perpendicular to the train streamline type regional car shell and are outwards provided with guide rails, the guide rails are connected to the control device upper support, two ends of the spoiler support are slidably arranged on the two guide rails through linear bearings, a vortex generator is arranged on the spoiler support, the electric motor is arranged on the control device lower support, the electric motor is connected with the ball screw through a coupler, and the ball screw is in transmission connection with the spoiler support through a ball nut.
The vortex generator is arranged on the spoiler support through the rotating motor, and a rotating shaft of the rotating motor is connected with the vortex generator through a coupler.
Wherein, the groove is movably provided with a rubber sealing strip.
The scheme of the invention has the following beneficial effects:
1. the invention breaks through the traditional method for realizing pneumatic drag reduction of the train and resistance increase of the wind resistance brake plate through appearance smoothing, and provides a method for weakening or enhancing the strength of the wake vortex and realizing the control of the tail train resistance from the control angle of the wake vortex. The vortex generator can break the streamline of the train when the train is started, increase the resistance of the train, and realize the cooperative control of increasing and decreasing the resistance of the whole train.
2. The invention can control the resistance accurately by controlling the angle of the vortex generator, so that the resistance is slowly reduced or increased, and the comfort of the train is improved.
3. The invention realizes the functions of resistance reduction and resistance increase simultaneously through the vortex generator, reduces maintenance work and conforms to the vehicle clearance.
Drawings
FIG. 1 is a schematic diagram of a train tail car structure during the drag reduction operation of the vortex generator-based train drag reduction device of the present invention;
FIG. 2 is a top view of a trailing car of the present invention during drag reduction operation of a vortex-generator based drag reduction and augmentation apparatus;
FIG. 3 is a schematic diagram of a train tail car structure during resistance-increasing operation of the vortex generator-based train drag-increasing and reducing device of the present invention;
FIG. 4 is a top view of a trailing car of the train in drag-increasing operation of the vortex-generator-based drag-increasing and reducing device of the present invention;
FIG. 5 is a schematic diagram of a train head train structure during the resistance-increasing operation of the vortex-generator-based train resistance-increasing and reducing device of the present invention;
FIG. 6 is a top view of the train head during the drag-increasing operation of the vortex-generator-based drag-increasing and reducing device of the present invention;
FIG. 7 is a schematic diagram of a vortex generator structure of the train friction and damping device based on the vortex generator according to the present invention;
FIG. 8 is a schematic view of a sliding control mechanism and a rotating mechanism of the vortex generator-based drag and drag increasing device for a train of the present invention;
fig. 9 is a schematic diagram of a sliding control mechanism and a rotating mechanism of the vortex generator-based train drag and drag increasing device of the invention.
[ description of reference ]
1-a vortex generator; 2-train head; 3-train tail; 4-train streamline area shell; 5-groove; 6-controlling the lower support of the device; 7-spoiler support; 8-an electric motor; 9-ball screw; 10-controlling the upper support of the device; 11-a guide rail; 12-rotating electrical machines.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a train resistance increasing and decreasing device based on a vortex generator, aiming at the problem that the existing mode is difficult to accurately control the resistance of a train in operation.
As shown in fig. 1, an embodiment of the present invention provides a train drag increasing and decreasing device based on a vortex generator, including: the vortex generator 1 is provided with an even number of vortex generators 1, the even number of vortex generators 1 are symmetrically arranged on two sides of a train, the vortex generators 1 are respectively arranged on a head train 2 and a tail train 3, the vortex generators 1 are perpendicular to a train streamline area train shell 4, the vortex generators 1 are provided with a sliding control mechanism, the vortex generators 1 are arranged at the train streamline area train shell 4 in a rising or contracting mode through the sliding control mechanism, the vortex generators 1 are provided with a rotating mechanism, and the rotating mechanism is used for adjusting the angle between the vortex generators 1 and the train middle lines.
According to the train drag and drag increasing device based on the vortex generator, the sliding control mechanism is used for controlling the vortex generator 1 to rise or contract, so that the vortex generator 1 is made to interact with air when needed, and the rotating angle of the vortex generator 1 is controlled through the rotating mechanism, so that the contact area of the vortex generator 1 and the air is adjusted, and the air flowing direction is controlled.
The train head car 2 and the train tail car 3 are provided with four vortex generators 1.
As shown in fig. 2, when the train drag-increasing and-reducing device based on the vortex generator is in a drag reduction state, the vortex generator 1 of the train head car 2 is contracted and arranged in the train streamline area car shell 4; the vortex generator 1 of the train tail car 3 is arranged outside the train streamline type regional car shell 4 in a lifting mode, and the included angle between the vortex generator 1 of the train tail car 3 and the center line of the train is 50 degrees.
When the train resistance increasing and decreasing device based on the vortex generators is in a resistance increasing state, the vortex generators 1 of the train head car 2 are lifted and arranged outside the train streamline area car shell 4, the included angles between the two vortex generators 1 positioned in front of the train head car 2 and the train center line are-90 degrees, and the included angles between the two vortex generators 1 positioned behind the train head car 2 and the train center line are 90 degrees; the vortex generator 1 of the train tail car 3 is arranged outside the train streamline type regional car shell 4 in a lifting mode, and the included angle between the vortex generator 1 of the train tail car 3 and the center line of the train is-50 degrees.
According to the train drag increasing and decreasing device based on the vortex generators, when a train works in drag reduction, the vortex generator 1 of the head train 2 is in a non-rising state, the vortex generator of the tail train 3 of the train rises, and the included angle between the vortex generator and the center line of the train is increased from 0 degree to 50 degrees, so that the maximum drag reduction effect of the pneumatic resistance of the tail train is realized by 4 percent, as shown in fig. 1 and 2. When the resistance of the train is increased and braked, the vortex generator 1 of the tail train 3 is in a rising state, and rotates to a degree of minus 50 degrees, so that the pneumatic resistance of the tail train 3 is increased by 6 percent, as shown in fig. 3 and 4; meanwhile, the vortex generators 1 of the train head car 2 rise, the group of vortex generators 1 at the rear rotate to a, which is 90 degrees, and the group of vortex generators at the front rotate to-90 degrees, so that pneumatic resistance increase of the train head car 2 is realized by 19 percent, as shown in fig. 5 and 6.
As shown in fig. 7, the vortex generator 1 has a triangular structure or a trapezoidal plate structure.
The vortex generator 1 is of a right-angle trapezoid plate-shaped structure, the maximum length of the bottom edge of the vortex generator 1 is 0.65m, the maximum height of the vortex generator 1 is 0.4m, and the acute angle of the vortex generator 1 is 35 degrees.
As shown in fig. 8 and 9, the train streamline area train shell 4 is provided with a plurality of grooves 5, and the vortex generator 1 is slidably disposed in the grooves 5.
Wherein the slide control mechanism includes: a control device lower support 6, a spoiler support 7, an electric motor 8, a ball screw 9 and a control device upper support 10, the control device upper support 10 is arranged on the inner side of the train streamline area car shell 4, the control device lower support 6 is fixedly arranged in the train streamline area car shell 4, both ends of the lower support 6 of the control device are provided with guide rails 11 outwards perpendicular to the shell 4 of the train streamline type area, the guide rails 11 are connected to the control device upper support 10, the spoiler support 7 is slidably disposed at both ends thereof on the two guide rails 11 through linear bearings, the vortex generator 1 is arranged on the spoiler support 7, the electric motor 8 is arranged on the control device lower support 6, the electric motor 8 is connected with the ball screw 9 through a coupler, and the ball screw 9 is in transmission connection with the spoiler support 7 through a ball nut.
The rotary mechanism is provided with a rotary motor 12, the rotary motor 12 is fixedly arranged on the spoiler support 7, the vortex generator 1 is arranged on the spoiler support 7 through the rotary motor 12, and a rotating shaft of the rotary motor 12 is connected with the vortex generator 1 through a coupler.
Wherein, a rubber sealing strip is movably arranged at the groove 5.
According to the pneumatic drag reduction device based on the control of the tail vortex of the train, when the vortex generator 1 needs to extend and expand, the electric motor 8 drives the ball screw 9 to rotate, the ball nut drives the spoiler support 7 and the vortex generator 1 to move upwards along the guide rail 11, the vortex generator 1 jacks a rubber sealing strip to extend out from the groove 5 in the shell 4 of the streamline area at the end part of the train, the electric motor 8 stops after the specified position is reached, the ball nut is self-locked, the spoiler support 7 and the vortex generator 1 are locked at the position, and the vortex generator 1 can be driven to rotate through the rotating motor 12. When the vortex generator 1 needs to be retracted after being unfolded, the rotating motor 12 can drive the vortex generator 1 to rotate until the vortex generator 1 is flush with the groove 5, the electric motor 8 drives the ball screw 9 to rotate reversely, the ball nut drives the spoiler support 7 and the vortex generator 1 to move downwards along the guide rail 11, the rubber sealing strip automatically resets after the vortex generator 1 is retracted out of the groove 5, the electric motor 8 stops after being retracted completely, the ball nut is self-locked, and the spoiler support 7 and the vortex generator 1 are locked.
When the train runs at high speed, ambient air moves along the surface of the train body, flow separation is generated at the tail of the train, and a pair of inward rotating vortexes are formed. The train tail vortex is one of the main sources of aerodynamic resistance of the train, and in the drag reduction operation, the vortex generator can generate a pair of vortexes opposite to the direction of the train tail vortex, so that the strength of the train tail vortex is weakened, and the aerodynamic resistance of the train is reduced. Meanwhile, the vortex generator has a blocking effect on the incoming flow, the positive pressure at the tail of the train is increased, the differential pressure resistance at the head and the tail of the train is reduced, and the pneumatic resistance is reduced; the invention can enhance the intensity of the wake vortex during the resistance increasing operation, and simultaneously breaks the streamline of the train head, thereby achieving the resistance increasing effect.
Through wind tunnel test and numerical simulation verification, the resistance reduction effect of the device can reach 4%. The resistance increasing effect is that the resistance increasing effect of the first car is 19 percent and the resistance increasing effect of the tail car is 6 percent, and the specific effect is shown in the following table.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a train increase and decrease hinders device based on vortex generator which characterized in that includes:
the vortex generators are arranged on the two sides of the train symmetrically, the vortex generators are arranged on the head train and the tail train respectively, the vortex generators are perpendicular to the train streamline area train shell, each vortex generator is provided with a sliding control mechanism, each vortex generator is arranged at the train streamline area train shell in a rising or contracting mode through the corresponding sliding control mechanism, and each vortex generator is provided with a rotating mechanism used for adjusting the angle between the corresponding vortex generator and the train center line.
2. The vortex-generator-based train friction-increasing and drag-reducing device according to claim 1, wherein said head train and tail train are each provided with four said vortex generators.
3. The vortex-generator-based train drag and increase device of claim 2, wherein when the vortex-generator-based train drag and increase device is in a drag reduction state, the vortex generators of the train head car are shrunk and arranged in the train streamline area car shell; the vortex generator of the train tail car is arranged outside the train streamline area car shell in a lifting mode, and the included angle between the vortex generator of the train tail car and the center line of the train is 50 degrees.
4. The vortex-generator-based train drag and drag increasing and reducing device according to claim 2, wherein when the vortex-generator-based train drag increasing and reducing device is in a drag increasing state, the vortex generators of the train head car are lifted and arranged outside the casing of the streamline area of the train, the included angles between the two vortex generators positioned in front of the train head car and the center line of the train are-90 degrees, and the included angles between the two vortex generators positioned behind the train head car and the center line of the train are 90 degrees; the vortex generator of the train tail car is arranged outside the train streamline area car shell in a lifting mode, and the included angle between the vortex generator of the train tail car and the center line of the train is-50 degrees.
5. The vortex-generator-based train friction-increasing and drag-reducing device according to claim 1, wherein the vortex generator is of a triangular structure or a trapezoidal plate structure.
6. The vortex-generator-based train friction-increasing and drag-reducing device according to claim 4, wherein the vortex generator is a right trapezoid plate-shaped structure, the maximum length of the bottom edge of the vortex generator is 0.65m, the maximum height of the vortex generator is 0.4m, and the acute angle of the vortex generator is 35 °.
7. The vortex-generator-based train friction-increasing and drag-reducing device according to claim 1, wherein said train streamline area housing is opened with a plurality of grooves, and said vortex generators are slidably disposed in said grooves.
8. The vortex-generator based train friction enhancing and reducing device of claim 7, wherein said slip control mechanism comprises: the control device comprises a control device lower support, a spoiler support, an electric motor, a ball screw and a control device upper support, wherein the control device upper support is arranged on the inner side of a train streamline type regional car shell, the control device lower support is fixedly arranged in the train streamline type regional car shell, two ends of the control device lower support are perpendicular to the train streamline type regional car shell and are outwards provided with guide rails, the guide rails are connected to the control device upper support, two ends of the spoiler support are slidably arranged on the two guide rails through linear bearings, a vortex generator is arranged on the spoiler support, the electric motor is arranged on the control device lower support, the electric motor is connected with the ball screw through a coupler, and the ball screw is in transmission connection with the spoiler support through a ball nut.
9. The vortex-generator-based train friction and drag increasing and reducing device according to claim 8, wherein the rotating mechanism is provided with a rotating motor, the rotating motor is fixedly arranged on the spoiler support, the vortex generator is mounted on the spoiler support through the rotating motor, and a rotating shaft of the rotating motor is connected with the vortex generator through a coupling.
10. The vortex-generator based train friction enhancing and reducing device according to claim 7, wherein a rubber sealing strip is movably disposed at said groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111432133.2A CN113997964B (en) | 2021-11-29 | 2021-11-29 | Train drag increasing and reducing device based on vortex generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111432133.2A CN113997964B (en) | 2021-11-29 | 2021-11-29 | Train drag increasing and reducing device based on vortex generator |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113997964A true CN113997964A (en) | 2022-02-01 |
CN113997964B CN113997964B (en) | 2023-03-28 |
Family
ID=79930697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111432133.2A Active CN113997964B (en) | 2021-11-29 | 2021-11-29 | Train drag increasing and reducing device based on vortex generator |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113997964B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023044715A (en) * | 2021-09-18 | 2023-03-31 | 中南大学 | Air resistance reduction device and method for the same based on train slip stream vortex control |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11105708A (en) * | 1997-10-06 | 1999-04-20 | Kazue Hama | Air resistance reducing device |
US6321659B1 (en) * | 1999-03-18 | 2001-11-27 | Daimlerchrysler Rail Systems Gmbh | Railway vehicle with a streamlined terminal portion |
CN105313910A (en) * | 2014-08-01 | 2016-02-10 | 郭宏斌 | A high speed train provided with a resistance reducing device |
CN108561268A (en) * | 2018-01-16 | 2018-09-21 | 向俊达 | A kind of novel wind motor vortex generator |
CN110001686A (en) * | 2019-05-22 | 2019-07-12 | 中国科学院力学研究所 | Array bullet train tail portion vortex flow control device |
CN110606189A (en) * | 2019-09-25 | 2019-12-24 | 哈尔滨工程大学 | Passive condition-activated vortex generator and working method thereof |
CN111976754A (en) * | 2020-08-24 | 2020-11-24 | 中南大学 | Double-deck windage arresting gear, double-deck cab structure and high-speed train |
CN112478004A (en) * | 2019-09-12 | 2021-03-12 | 法拉利公司 | Motor vehicle with rear spoiler and pneumatic element for increasing the pneumatic efficiency of the rear spoiler |
EP3792160A1 (en) * | 2019-09-12 | 2021-03-17 | FERRARI S.p.A. | Car provided with a rear spoiler and with a movable deflector panel to adjust the action of the rear spoiler |
CN113264070A (en) * | 2021-06-03 | 2021-08-17 | 中南大学 | Turbulence device for intercity train |
-
2021
- 2021-11-29 CN CN202111432133.2A patent/CN113997964B/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11105708A (en) * | 1997-10-06 | 1999-04-20 | Kazue Hama | Air resistance reducing device |
US6321659B1 (en) * | 1999-03-18 | 2001-11-27 | Daimlerchrysler Rail Systems Gmbh | Railway vehicle with a streamlined terminal portion |
CN105313910A (en) * | 2014-08-01 | 2016-02-10 | 郭宏斌 | A high speed train provided with a resistance reducing device |
CN108561268A (en) * | 2018-01-16 | 2018-09-21 | 向俊达 | A kind of novel wind motor vortex generator |
CN110001686A (en) * | 2019-05-22 | 2019-07-12 | 中国科学院力学研究所 | Array bullet train tail portion vortex flow control device |
CN112478004A (en) * | 2019-09-12 | 2021-03-12 | 法拉利公司 | Motor vehicle with rear spoiler and pneumatic element for increasing the pneumatic efficiency of the rear spoiler |
EP3792160A1 (en) * | 2019-09-12 | 2021-03-17 | FERRARI S.p.A. | Car provided with a rear spoiler and with a movable deflector panel to adjust the action of the rear spoiler |
CN110606189A (en) * | 2019-09-25 | 2019-12-24 | 哈尔滨工程大学 | Passive condition-activated vortex generator and working method thereof |
CN111976754A (en) * | 2020-08-24 | 2020-11-24 | 中南大学 | Double-deck windage arresting gear, double-deck cab structure and high-speed train |
CN113264070A (en) * | 2021-06-03 | 2021-08-17 | 中南大学 | Turbulence device for intercity train |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023044715A (en) * | 2021-09-18 | 2023-03-31 | 中南大学 | Air resistance reduction device and method for the same based on train slip stream vortex control |
JP7398147B2 (en) | 2021-09-18 | 2023-12-14 | 中南大学 | Air resistance reduction device and method based on train wake vortex control |
Also Published As
Publication number | Publication date |
---|---|
CN113997964B (en) | 2023-03-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108162995B (en) | Air guide device and method for reducing air pressure difference resistance by using same | |
CN108238029B (en) | Braking system of high-speed rail motor train unit | |
CN110070850B (en) | Streamline flow-through type obstacle deflector and application thereof | |
CN113997964B (en) | Train drag increasing and reducing device based on vortex generator | |
WO2021135042A1 (en) | Railway vehicle with aerodynamic lift control device | |
CN103213599A (en) | Wind resistance braking device applied to high-speed train | |
CN111071272B (en) | Obstacle deflector with pit arranged at rear end of bottom and application thereof | |
CN103723154B (en) | A kind of vacuum pipe traffic vehicle bending upwards type headstock tailstock structure | |
CN113264070B (en) | Inter-city train is with vortex device | |
CN109606395B (en) | Power transmission method for rail operation vehicle | |
CN113734211B (en) | Pneumatic drag reduction device and method based on train wake vortex control | |
CN110242494A (en) | A kind of movable sawtooth trailing edge structures of wind energy conversion system with wing flap function | |
CN101456419A (en) | Train speed-raising device | |
CN105922998A (en) | Airflow guiding hood for railway vehicle and railway vehicle | |
CN103112462B (en) | Motor train unit | |
CN101480961A (en) | Deceleration flap of train | |
CN206187038U (en) | Tunnel rail line traction with retarder | |
CN204526853U (en) | A kind of control setup of trolleybus collecting pole | |
CN106232450B (en) | Streamline support induction method for wheel-rail train | |
CN205131240U (en) | Pnematic track vehicle | |
CN204998554U (en) | Arresting gear is retrieved to subway kinetic energy | |
CN201334018Y (en) | Train speed-raising device | |
CN106114536A (en) | Wind energy loss of weight and increase adhesion system in train driving | |
CN207059792U (en) | A kind of windage brakes recovery system | |
CN207243214U (en) | A kind of disc brake Large-power High-Speed traction machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |