CN110155091A - A kind of damping device for bullet train - Google Patents
A kind of damping device for bullet train Download PDFInfo
- Publication number
- CN110155091A CN110155091A CN201910432835.7A CN201910432835A CN110155091A CN 110155091 A CN110155091 A CN 110155091A CN 201910432835 A CN201910432835 A CN 201910432835A CN 110155091 A CN110155091 A CN 110155091A
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- Prior art keywords
- damping device
- bullet train
- deflector
- accommodating groove
- train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
-
- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of damping device for bullet train, damping device is used to be arranged in the car body bottom of bullet train, and is located at bogie region front end, damping device includes deflector, deflector includes windward side and leeward side, wherein the surface of windward side is arc line type；In use state: the bottom of the pilot on the surface and bullet train of windward side or car bottom plate are tangent, and leeward side connects with the skirtboard of bullet train and bogie cabin.Damping device of the invention is arranged in car bottom, bottom airflow is suitably stopped and is oriented to ground, to mitigate and delay bottom airflow to improve local flow to the percussion of equipment under bogie the region especially vehicles such as wheel, braking, to achieve the purpose that reduce vehicle bottom aerodynamic drag.
Description
Technical field
The present invention relates to High-sped Trains fields, more particularly, to a kind of damping device for bullet train.
Background technique
Aerodynamic drag is one of the key index for influencing bullet train speed-raising, and good drag characteristic is also train energy-saving ring
The important symbol of guarantor.Studies have shown that the aerodynamic drag of bullet train is directly proportional to velocity squared, even streamlined degree is very
High EMU, when train running speed is 300km/h, air drag can achieve the 80% of drag overall, when speed is
When 350km/h, air drag can achieve the 90% of drag overall, therefore, reduces traction power, reduces energy consumption, improve economic effect
The most critical issue of benefit is the pneumatic drag reduction of bullet train.
Studies have shown that the main source of bullet train aerodynamic drag includes: mantle friction, end to end vehicle pressure drag, steering
Frame, pantograph system, workshop gap etc..Wherein, the aerodynamic drag of equipment can reach the total gas of train under bogie region and vehicle
The 22%~53% of dynamic resistance.Therefore, the aerodynamic drag for reducing train bottom is the critical issue of bullet train pneumatic drag reduction.
Therefore it provides a kind of damping device for bullet train is to reduce the aerodynamic drag of bullet train bottom, it is this
Field technical problem urgently to be resolved.
Summary of the invention
In view of this, the present invention provides a kind of damping device for bullet train, by the way that damping device setting exists
Bottom airflow is suitably stopped and is oriented to ground by car bottom, with mitigate and delay bottom airflow to bogie region especially
The percussion of equipment, improves local flow under the vehicles such as wheel, braking, to reach the mesh for reducing train bottom aerodynamic drag
's.
In order to solve the above technical problem, the present invention provides a kind of damping devices for bullet train, which is characterized in that
Damping device is used to be arranged in the car body bottom of bullet train, and is located at bogie region front end, damping device
Including deflector, deflector includes windward side and leeward side, wherein the surface of windward side is arc line type；
In use state: the bottom of the pilot on the surface and bullet train of windward side or car bottom plate are tangent, leeward
Side connects with the skirtboard of bullet train and bogie cabin.
Optionally, damping device further includes accommodating groove and partition, and accommodating groove is located inside car body, for storing water conservancy diversion
Plate, partition can be slided relative to car bottom plate, realize and the notch of accommodating groove is opened or closed；
In use state: the notch of accommodating groove is opened, and deflector stretches out accommodating groove；In receiving state, deflector is received
It receives into accommodating groove, partition closes the notch of accommodating groove.
Optionally, damping device further includes the first branch, and the first branch is structure as a whole with deflector, in use state
When, the first branch is located in accommodating groove.
Optionally, damping device further includes the first hydraulic stem and the second hydraulic stem, and the first hydraulic stem is connected with partition, the
Two hydraulic stems are connected with the first branch.
Optionally, the surface of leeward side is plane, in use state, the surface of leeward side and the plane where car bottom plate
Between shape it is at α angle, wherein 20 °≤α≤60 °.
Optionally, in the application: the head vehicle car bottom of bullet train, first bogie region front end are provided with one
A damping device is arranged every n section compartment, wherein 1≤n≤3 in a damping device.
Optionally, n=2.
Compared with prior art, provided by the present invention for the damping device of bullet train, at least realizing following has
Beneficial effect:
Provided by the present invention for the damping device of bullet train, by being arranged damping device before bogie region
End, during train driving, the air-flow of train bottom can suitably be stopped and be oriented to ground by the windward side of deflector, to subtract
Gently and bottom airflow is delayed to improve local flow to the percussion of equipment under bogie the region especially vehicles such as wheel, braking
It is dynamic, achieve the purpose that drag reduction, to realize reduction traction power, reduces energy consumption.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is mounted on the rough schematic view on bullet train for the damping device provided by the present invention for bullet train；
Fig. 2 is the schematic top plan view for the bullet train that Fig. 1 is provided；
Fig. 3 is partial enlargement diagram at damping device position in Fig. 1；
Fig. 4 is the Base Flow schematic diagram of the bullet train without damping device；
Fig. 5 is bullet train Base Flow schematic diagram of the installation provided by the present invention for the damping device of bullet train；
Fig. 6 is the damping device partial simplified schematic diagram one provided by the present invention for bullet train；
Fig. 7 is the damping device partial simplified schematic diagram two provided by the present invention for bullet train；
Fig. 8 is the damping device partial simplified schematic diagram three provided by the present invention for bullet train；
Fig. 9 is the damping device partial simplified schematic diagram four provided by the present invention for bullet train；
Figure 10 is the resistance statistical result chart of test group and control group bullet train.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Research finds that the main source of bullet train aerodynamic drag includes: mantle friction, end to end vehicle pressure drag, steering
Frame, pantograph system, workshop gap etc..3 marshalling bullet trains are carried out the study found that car body surface frictional resistance accounts for about total gas
The 36% of dynamic resistance, vehicle accounts for 27% or so end to end, and pantograph system accounts for 11%, and equipment accounts for 22% under bogie and vehicle, and car body connects
The place of connecing accounts for 4%.The 16 of active service marshalling bullet trains are carried out to turn the study found that vehicle accounts for about 8% or so of total aerodynamic drag end to end
Equipment accounts for 53% under to frame region and vehicle, and pantograph system accounts for 8%, and car body surface frictional resistance accounts for 27%.Based on the studies above,
Inventor thinks that the aerodynamic drag of equipment under bogie region and vehicle is larger, for equipment Research of Drag Reduction under bogie region and vehicle
More urgent, inventor provides a kind of damping device for bullet train as a result, realizes to equipment under bogie region and vehicle
Pneumatic drag reduction reduce energy consumption to realize reduction traction power.
Fig. 1 is mounted on the rough schematic view on bullet train for the damping device provided by the present invention for bullet train.
Fig. 2 is the schematic top plan view for the bullet train that Fig. 1 is provided, and Fig. 3 is that the part of Fig. 1 high speed train head vehicle setting damping device is put
Big schematic diagram.
As depicted in figs. 1 and 2, damping device 11 is used to be arranged in the car body bottom of bullet train, as shown in figure 3, subtracting
Hindering device 11 includes deflector 111, and deflector 111 includes windward side C1 and leeward side C2, wherein the surface of windward side C1 is arc
Line style；As illustrated in Fig. 1 and Fig. 2 in use state: the surface of windward side C1 and the car bottom plate 15 of bullet train or row
The bottom 12 for hindering device is tangent, and leeward side C2 connects with the skirtboard 13 of bullet train and bogie cabin 14.Wherein, for can be positive and negative
To for the bullet train of traveling, use state be can be understood as in bullet train forward travel state.It is only simplified in Fig. 1
Illustrate the position of damping device 11, skirtboard 13 is used to close vehicle body two sides (or part) space at bogie region, smooth
Body contour can play the role of preventing allotrylic, protection vehicle bottom equipment.Bogie cabin 14 is half packet for placing bogie
The cavity of closed structure, wherein bogie is that the core component of bullet train mainly has carrying, guiding, vibration damping, traction, braking
Etc. functions, do not show that bogie in figure, be provided with bogie in each car bottom in practice.Under normal conditions, each
There are two bogies for a car bottom setting, and when damping device is arranged in the head vehicle car bottom of bullet train, damping device is set
Set the front end in first bogie region.Since head vehicle car bottom is additionally provided with pilot, then the deflector of damping device
Windward side and bullet train pilot bottom it is tangent；In the non-head vehicle car bottom of bullet train, damping device is set
When, non-head vehicle car bottom does not need setting pilot, then the vehicle bottom of the windward side of the deflector of damping device and bullet train
Plate is tangent.
In use state: the bottom of the pilot on the surface and bullet train of windward side or car bottom plate are tangent.Usually
In the case of in the head vehicle car bottom of bullet train, pilot is set, pilot is mounted on the front end of first bogie, is used for
Exclude the barrier on track, the equipment for scratching car bottom so as to barrier.
Fig. 4 is the Base Flow schematic diagram of the bullet train without damping device, and Fig. 5 is installation provided by the present invention for height
The bullet train Base Flow schematic diagram of the damping device of fast train.Signal in comparison diagram 4 and Fig. 5, in installation, the present invention is mentioned
In the bullet train of the damping device 11 of confession, by being arranged damping device 11 in bogie region front end, in train driving mistake
The air-flow of train bottom can suitably be stopped and be oriented to ground by the windward side of Cheng Zhong, deflector, to mitigate and delay bottom gas
The percussion to equipment under bogie the region especially vehicles such as wheel, braking is flowed, local flow is improved, reaches the mesh of drag reduction
, to realize reduction traction power, reduce energy consumption.
With continued reference to shown in Fig. 3, Fig. 3 signal is sectional view, and the surface of leeward side C2 is plane, the table of leeward side C2
Shape is at α angle between plane where face and the bottom of pilot 12, wherein 20 °≤α≤60 °.Direction a is the bottom of perpendicular in Fig. 3
The direction in face, in direction, the height of a baffle upper plate 111 is H.In practice due to the wheel of different automobile types and pilot or vehicle bottom
The relative position of plate is different, and angle [alpha] and the specific value of height H can be set according to specific vehicle.Height H's takes when design
Value cannot be excessive, to guarantee that the bottom end of deflector 111 is higher than wheel bottom (surface contacted with rail), prevents drag reduction from filling
It sets and touches rail, and guarantee that bottom airflow can suitably be stopped and be oriented to ground by deflector 111.Be arranged the angle α it is excessive or
When person is too small, the diversion effect of deflector has a degree of decrease, and 20 °≤α≤60 °, actual design is arranged in the present invention
When can be directed to specific vehicle, in conjunction with height H design realize it is optimal reduce bottom vapour lock effect.
In one embodiment, Fig. 6 is the damping device rough schematic view one provided by the present invention for bullet train.Figure
7 be the damping device rough schematic view two provided by the present invention for bullet train.As shown in Figure 6 and Figure 7, damping device also wraps
Accommodating groove 112 and partition 113 are included, accommodating groove 112 is located inside car body, and for storing deflector 111, partition 113 being capable of phase
The bottom 12 of pilot is slided (it is appreciated that when the car bottom of non-head vehicle is arranged in corresponding damping device, partition
113 can be slided relative to car bottom plate), it realizes and the notch K of accommodating groove 112 is opened or closed.As Fig. 6 illustrates,
In use state: partition 113 slides, and the notch K of accommodating groove 112 is opened, and deflector 111 stretches out accommodating groove 112；As Fig. 7 shows
Meaning, in receiving state, deflector 111 is received into accommodating groove 112, and partition 113 closes the notch K of accommodating groove 112.
The bullet train for installing damping device provided by the invention, in driving status, partition sliding, the notch of accommodating groove
After opening, deflector stretches out accommodating groove, and in driving direction, the windward side of deflector can suitably hinder the air-flow of train bottom
Ground is kept off and is oriented to, to mitigate and delay impact of the bottom airflow to equipment under bogie the region especially vehicles such as wheel, braking
Effect, improves local flow, achievees the purpose that drag reduction.Exist in non-driving state, or for the bullet train of two way
When switching driving direction, deflector can be received into accommodating groove, then partition closes the notch of accommodating groove, to guarantee
The planarization and leakproofness of car bottom.
Further, with continued reference to Fig. 6 or shown in Fig. 7, damping device further includes the first branch B1, the first branch B1 with
Deflector 111 is structure as a whole, and in use state, the first branch B1 is located in accommodating groove 112.First point in the embodiment
Portion is structure as a whole with deflector, and when deflector stretches out accommodating groove, the first branch is hidden in inside accommodating groove, and deflector is right
When bottom airflow plays blocking and guiding role, air-flow can generate certain active force to deflector, and the present invention passes through first point
The design in portion can guarantee the strength and stability on deflector structure.
In one embodiment, Fig. 8 is the damping device partial simplified schematic diagram provided by the present invention for bullet train
Three.Fig. 9 is the damping device partial simplified schematic diagram four provided by the present invention for bullet train.Damping device further includes first
Hydraulic stem 114 and the second hydraulic stem 115, the first hydraulic stem 114 are connected with partition 113, the second hydraulic stem 115 and the first branch
B1 is connected.Wherein, the connection type of the first hydraulic stem and partition, the connection type of the second hydraulic stem and the first branch, such as
It can be connected using fastened by screw or other can be realized the prior art of two components connection, the present invention is not done specifically herein
It limits.In this embodiment, the sliding of partition and stretching for deflector are realized by the way of hydraulic control.Using shape
When state, basal sliding of the partition relative to pilot is controlled by the first hydraulic stem first, the notch of accommodating groove is opened, then leads to
The control of the second hydraulic stem is crossed by deflector by being pushed out in accommodating groove using position.In receiving state, pass through second first
Deflector is received into accommodating groove by the control of hydraulic stem, then controls bottom of the partition relative to pilot by the first hydraulic stem
Portion, which is slided, closes the notch of accommodating groove.It should be noted that deflector only exists use state and receiving state in the present invention
Two states, without other intermediate state.Damping device structure in the present invention is simple, using flexible.It in practice can be new
Train exterior installation damping device is built, or the bullet train for becoming installation damping device can also be transformed to existing train.
Optionally, the operation of the first hydraulic stem and the second hydraulic stem can be controlled by the computer between train operation.Specifically
Control circuit the prior art can be used to realize, details are not described herein.
It should be noted that Fig. 6 includes the bottom 12 of pilot into Fig. 9, i.e., in bullet train head vehicle compartment
The damping device of bottom setting is illustrated.When damping device is arranged in non-head vehicle car bottom, the deflector in use state
Windward side and car bottom plate 15 it is tangent, the storage mode of deflector equally can refer to explanation of the Fig. 6 into Fig. 9, herein no longer
It repeats.
Figure 10 is the resistance statistical result chart of test group and control group bullet train.Wherein, test group is 3 marshalling high speeds
Train is only mounted with that damping device, control group are 3 marshallings for being fitted without damping device before first bogie region of head vehicle
Bullet train.Comparative study has been carried out to the bullet train aerodynamic characteristics under the 350km/h speed of service by numerical simulation.
According to aerodynamic basic theories, pneumatic drag coefficient is defined as:
Cd=2D/ (ρ V2A)
In formula: D is the air drag that train is born, including pressure drag and frictional resistance two parts；ρ is that air incoming flow is close
Degree；A is train front face area, i.e. cross-sectional area；V is train running speed.Testing program of the present invention uses numerical simulation
Method, by related software, true simulation under the conditions ofs generally acknowledging reasonable governing equation, calculating grid, physical model etc.
Air dynamic behaviour of the bullet train under the speed of service of 350km/h, and obtain test group bullet train aerodynamic drag
With control group bullet train aerodynamic drag, and corresponding C is calculated according to above-mentioned formulad。
The bullet train of damping device is installed as seen from Figure 10 compared with the bullet train for not installing damping device,
Head vehicle, middle vehicle and the corresponding pneumatic drag coefficient of trailer become smaller, and are equipped with the bullet train (test group) of damping device
Total drag coefficients CdAbout 0.272, the total drag coefficients C of the bullet train (control group) of damping device is not installeddAbout
0.336, then it is mounted with that the bullet train resistance coefficient of damping device subtracts than not installing the bullet train resistance coefficient of damping device
It is small by about 19% or so.Test proves, after installing damping device provided by the invention, can be effectively reduced total resistance of bullet train
Force coefficient can be effectively reduced the aerodynamic drag of bullet train receiving.
In some alternative embodiments, in the application: the head vehicle car bottom of bullet train being provided with one and subtracts
Device is hindered, one damping device then is set every n section compartment, wherein 1≤n≤3.It does not need in the present invention in train
Setting installation damping device in front of each bogie cabin, but it is spaced setting damping device, it can be realized reduction car bottom
While aerodynamic drag, reduce the setting of damping device, advantageously reduce cost of manufacture, while will not influence train integrated beauty
It sees.
Further, n=2.I.e. in the application, head vehicle car bottom is provided with a damping device, then every 2 sections
A damping device is arranged in compartment.
Through the foregoing embodiment it is found that damping device provided by the present invention for bullet train, at least realizes as follows
The utility model has the advantages that
The present invention provides a kind of damping device for bullet train, by being arranged damping device before bogie region
End, during train driving, the air-flow of train bottom can suitably be stopped and be oriented to ground by the windward side of deflector, to subtract
Gently and bottom airflow is delayed to improve local flow to the percussion of equipment under bogie the region especially vehicles such as wheel, braking
It is dynamic, achieve the purpose that drag reduction, to realize reduction traction power, reduces energy consumption.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (7)
1. a kind of damping device for bullet train, which is characterized in that
The damping device is used to be arranged in the car body bottom of bullet train, and is located at bogie region front end, the drag reduction
Device includes deflector, and the deflector includes windward side and leeward side, wherein the surface of the windward side is arc line type；
In use state: the surface of the windward side and the bottom of the pilot of the bullet train or car bottom plate are tangent,
The leeward side connects with the skirtboard of the bullet train and bogie cabin.
2. the damping device according to claim 1 for bullet train, which is characterized in that
The damping device further includes accommodating groove and partition, and the accommodating groove is located inside the car body, described for storing
Deflector, the partition can be slided relative to the car bottom plate, realize and the notch of the accommodating groove is opened or sealed
It closes；
In use state: the notch of the accommodating groove is opened, and the deflector stretches out the accommodating groove；In receiving state,
The deflector is received into the accommodating groove, and the partition closes the notch of the accommodating groove.
3. the damping device according to claim 2 for bullet train, which is characterized in that
The damping device further includes the first branch, and first branch is structure as a whole with the deflector, in use state
When, first branch is located in the accommodating groove.
4. the damping device according to claim 3 for bullet train, which is characterized in that
The damping device further includes the first hydraulic stem and the second hydraulic stem, and first hydraulic stem is connected with the partition,
Second hydraulic stem is connected with first branch.
5. the damping device according to claim 1 for bullet train, which is characterized in that
The surface of the leeward side is plane, flat where the surface of the leeward side and the car bottom plate in use state
Shape is at α angle between face, wherein 20 °≤α≤60 °.
6. the damping device according to claim 1 for bullet train, which is characterized in that
In the application: being provided with described in one in the head vehicle car bottom of the bullet train, first bogie region front end
A damping device is arranged every n section compartment, wherein 1≤n≤3 in damping device.
7. the damping device according to claim 6 for bullet train, which is characterized in that
N=2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432835.7A CN110155091B (en) | 2019-05-23 | 2019-05-23 | Drag reduction device for high-speed train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432835.7A CN110155091B (en) | 2019-05-23 | 2019-05-23 | Drag reduction device for high-speed train |
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| Publication Number | Publication Date |
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| CN110155091A true CN110155091A (en) | 2019-08-23 |
| CN110155091B CN110155091B (en) | 2020-08-04 |
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ID=67631968
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910432835.7A Active CN110155091B (en) | 2019-05-23 | 2019-05-23 | Drag reduction device for high-speed train |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111186453A (en) * | 2020-01-19 | 2020-05-22 | 中车青岛四方机车车辆股份有限公司 | Equipment guiding device under rail train car and rail train |
| CN112810639A (en) * | 2021-01-12 | 2021-05-18 | 中国科学院力学研究所 | Control device for reducing drag and noise of high-speed train |
| CN113799816A (en) * | 2021-10-14 | 2021-12-17 | 中国科学院力学研究所 | Drag reduction control device for high-speed train |
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| CN113799816A (en) * | 2021-10-14 | 2021-12-17 | 中国科学院力学研究所 | Drag reduction control device for high-speed train |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110155091B (en) | 2020-08-04 |
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