CN108263405A - A kind of drag reduction facility of bullet train - Google Patents

A kind of drag reduction facility of bullet train Download PDF

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Publication number
CN108263405A
CN108263405A CN201810098496.9A CN201810098496A CN108263405A CN 108263405 A CN108263405 A CN 108263405A CN 201810098496 A CN201810098496 A CN 201810098496A CN 108263405 A CN108263405 A CN 108263405A
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CN
China
Prior art keywords
drag reduction
train
compartment
negative pressure
reduction case
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Pending
Application number
CN201810098496.9A
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Chinese (zh)
Inventor
史永奇
Original Assignee
史永奇
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Filing date
Publication date
Application filed by 史永奇 filed Critical 史永奇
Priority to CN201810098496.9A priority Critical patent/CN108263405A/en
Publication of CN108263405A publication Critical patent/CN108263405A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61DBODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00Construction details of vehicle bodies
    • B61D17/02Construction 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Abstract

By setting a drag reduction compartment in train forepart, in compartment or so face and top surface setting trouble flow strip, last vehicle of train sets anti-negtive-pressure implement, in bogie portion, resistance absorber is set, reduce train head resistance with cross-ventilation and interference negative pressure is transmitted to tail portion compartment tail surface, windage resistance is reduced to air disturbance, reduce various resistances during train high-speed cruising to the method for bogie portion baffle, the position that each drag reduction method is obstructed at it is enable to play preferable drag reduction effect, with the drag reduction at above-mentioned four kinds of different location positions, resistance during train high-speed cruising is greatly reduced, the onward impulse of the train of certain power is improved indirectly, also generate electricity in anti-negative pressure case portion equipped with wind-driven generator with air automatic circulation, bullet train for certain power is energy saving, significantly provide sufficient and necessary condition.

Description

A kind of drag reduction facility of bullet train
Technical field
The present invention relates to many kinds of measures schemes and equipment of reduction resistance during bullet train operation.
Background technology
When bullet train is run, air drag suffered by head and its speed of service it is square directly proportional, with air resistance plane It is directly proportional.Current bullet train, head shape are bullet-shaped, and speed is fast, and windward side is not small, until when making the train run at high speed Resistance is very big, and the air friction on compartment surface, the resistance of multiple bogie portions, last vehicle of train face are hindered by negative pressure Air pressure wave aggravates when power needs the friction resistance force overcome, train crossing and crosses tunnel when power, train operation, to periphery Environment, safety have an adverse effect.The above problem all seriously affects the Effec-tive Function and safety of train, and wastes more The energy.A kind of design of existing vacuum pipe bullet train, when running, although resistance very little, the road of bullet train operation Journey is longer, and vacuum pipe is set in longer distance, and to ensure the technology being centainly pressurized requirement, and expense Mrs is intermediate Have and stand up and down, implement also extremely difficult.Add wind turbine at the top of also a kind of train, make front cross-ventilation, and generate thrust Method because only top set wind turbine, solution be fraction be obstructed area the problem of, and top increase wind turbine Afterwards, cross tunnel etc. is influenced by unfavorable operation.The existing device that small solid flow-disturbing is set before bogie, also Tail portion reduces the device and method of tail portion negative pressure by gradually decreasing the bullet-shaped of volume, also to compartment surface Non-smooth surface and Bionical setting drag reduction, the above method be not good enough to the reduction effect of its resistance.The reduction train of above-mentioned four classes different location is transported at a high speed The method of air drag has much room for improvement during row, so as to the relatively speed raising for bullet train and energy saving provides fully necessary item Part.
Invention content
Against the above deficiency, the present invention provides a kind of lower resistance facility of bullet train, and technical problems to be solved are:1、 The air drag on its head when being substantially reduced train operation;Compartment top surface, arranged on left and right sides when the 2nd, preferably reducing train operation Air friction;3 reduce rail and Train Wheel stiction resistance and the force of rolling friction resistance of Train Wheel and axletree;4th, compared with The air suction that tail portion is subject to when big degree reduces train operation;5th, largely reduce the air resistance in portion of train bogie portion Power.The technical solution adopted by the present invention is:First, the cavity drag reduction case that the cuboid of an opening adds triangular prism to form is provided with, The length and width in rectangular body cavity cross section not less than train driving room and the cross section length and width of train babinet, is open respectively in drag reduction case Top on setting one camera and corollary equipment, to observe the pavement behavior before drag reduction case;Setting one in cuboid The oblique circular cylinder cylinder of two bottom openings, round-bottomed shape opening are located in opening cuboid, and oval bottom opening is located at drag reduction case upper top, It is communicated with the external world.The round-bottomed portion of oblique circular cylinder cylinder sets a turbofan, in this way, when train high-speed cruising, drag reduction case opening Four sides are because of area very little, therefore by air event resistance very little, and the air of drag reduction case opening front is by drag reduction case turbofan The effect of negative pressure and the high forward of train and quickly moved into drag reduction case, movement is changed under the strong effect of wind turbine Direction is moved to along drag reduction tube channel direction in the air outside drag reduction case, by very big air when avoiding bullet train operation Resistance.2nd, the equal thickness of top surface and side where setting slightly protrudes from four sides in the top surface of carriage and arranged on left and right sides face is disturbed Flow item, then the flow-disturbing of the interior a certain number of parallel forward and backward side trouble flow strips of rectangle of setting of rectangle trouble flow strip on each face Item, due to drag reduction case width and height is slightly larger than or width and height equal to compartment, in addition compartment top surface, side are disturbed Flow the effect of the air-flow of item interference behind, when train high-speed cruising, top surface, the left and right side in the compartment in addition to trouble flow strip Air pressure be less than atmospheric pressure, air-flow becomes smaller to the adherency resistance and frictional resistance on its surface.Two side faces are because symmetrical, to every Generally speaking, the air effect power of two sides of left and right is cancelled out each other, and will not cause movement or the fortune of left and right two side in compartment in a compartment Dynamic trend.Then because bottom surface does not have a trouble flow strip, air pressure is less than bottom surface air pressure for top surface, compartment can be acted on by air pressure difference and The effect of the relatively lift occurred makes the pressure that rail is subject to subtract compartment lift for compartment gravity, hence it is evident that less than the weight in compartment Power, and reduce the force of rolling friction between stiction and wheel and axletree between high-speed cruising train wheel and rail i.e. Resistance during operation.3rd, one anti-negative pressure box is set in last vehicle of train, more air is made comparatively fast to interfere negative pressure under condition of negative pressure Rearwardly compartment tail surface transmit, to avoid or buffering last vehicle of train by stronger negative pressure to the suction resistance of last vehicle of train. The 4th, the babinet of definite shape under compartment bottom surface is set, an inclined-plane before first bogie is set in front, makes train During operation, inclined-plane is by smaller air drag, and bogie is located at inclined-plane trailing bogie makes bogie between babinet, keeps away Exempt from larger air drag.
Advantageous effect:By to a resistance drag reduction case, train babinet is added to increase trouble flow strip, tail portion vehicle before train driving room Compartment increases anti-negative pressure box, and bogie adds the drag reduction of four aspects of resistance absorber, significantly improves train efficiency and safety.With it is present Bullet train compare, relatively strong pressure wave when can preferably avoid opposite and row the train crossing and train from crossing tunnel, Under the conditions of Same Efficieney, can run faster, it is more energy saving, improved fully for the speed-raising by a relatively large margin of bullet train Necessary condition.
Description of the drawings:
Fig. 1 is bullet train drag reduction case front elevation view
Fig. 2 is bullet train drag reduction case vertical section figure
Fig. 3 is speed train cars side view
Fig. 4 is speed train cars vertical view
Fig. 5 is speed train cars tail portion drag reduction case stereoscopic schematic diagram
Fig. 6 is high-speed train head drag reduction case protective cover schematic shapes
Fig. 7 is high-speed train head drag reduction case schematic top plan view
Fig. 8 is bullet train overall diagram
Fig. 9 is the bottom view under high-speed train bogie
Figure 10 is the anti-negative pressure box schematic diagram of bullet train tail portion compartment tail surface
Attached drawing indicates:
1 head drag reduction case, 2 drag reduction tube channels, 3 wind turbines, 4 protective covers, 5 cameras, rainwater outlet in 6 drag reduction casees, 7 train vehicles Compartment, 8 bogies, 9 bogie resistance absorbers, 10 tail portion compartment tail surfaces, 11 wheels, 12 trouble flow strips, 13 anti-negtive-pressure implement interference portions, 14 anti-negtive-pressure implement buffer parts, 15 bogie head drag reduction casees, 16 bogie drag reduction case flow-disturbing connecting plates, 17 drag reduction tube channels are oval Bottom opening, 18 protective cover wire sides, 19 drag reduction tube channel circular bottom surface are open, the side of the bogie resistance absorber before and after 20 bogies Face, 21 anti-negtive-pressure implement negative pressure portions, the straight pentagonal prism drag reduction case of 22 bogies, the straight hexagonal prisms drag reduction case of 23 bogies, 24 compartments Anti- negative pressure box on bottom surface, anti-negative pressure box under 25 compartment bottom surfaces.
The connection of the explanation of following specific embodiment either connection or is combined as those skilled in the art and is apparent that Welding either the connection of certain function or be combined into an entirety.
Specific embodiment:
Head resistance absorber:As shown in Fig. 2, Fig. 6, cuboid being provided with an opening, being made by hard material such as stainless steel plate Train head drag reduction case 1.Regular triangular prism chamber protective cover 4 is located at forefront, and two triangle bottoms of regular triangular prism chamber protective cover 4 Face in the plane where the left and right side of cuboid train head drag reduction case 1 and is respectively to close, and each bottom surface One length of side of triangle is overlapped with the height of train head drag reduction case 1, and two inclines and the cuboid drag reduction case 1 of regular triangular prism are open Other two side in face overlaps, and two faces of regular triangular prism earlier above form two faces of protective cover net 18, avoid birds and other not Bright object is strayed into drag reduction case 1.
Further, the cross-sectional area of train head drag reduction case 1 not less than compartment 7 cross-sectional area i.e. 4050 × 3360 square millimeters, to avoid following car by the frontal drag of air.
As shown in Figure 1, Figure 2, shown in Fig. 8, further, one is set on the top forward position being open in train head drag reduction case 1 The corollary equipments such as camera 5 and rain-proof glass, display are located in driver's cabin, with the road of 1 front of series of observations headstock portion drag reduction case Planar condition;
Further, the oblique circular cylinder cylinder drag reduction tube channel 2 of two bottom openings, drag reduction channel are set in train head drag reduction case 1 One wind turbine 3 of setting, drag reduction tube channel ellipse bottom opening 17 in round-bottomed opening 19 is managed to be located at 1 upper top of train head drag reduction case and open Mouthful and coincide with upper top opening and connect and communicated with the external world, oblique circular cylinder cylinder drag reduction tube channel 2 and the angle of train bottom surface are less than 30 Degree, to be conducive to, wind turbine is very fast, preferably changes the direction of air movement in drag reduction case 1 and discharges outside it;
Further, it goes to the bottom in drag reduction case 1, the drag reduction case of a parallel drag reduction case air inlet plane is set behind drag reduction tube channel 2 Interior rainwater groove 6 can flow to the ground below drag reduction case 1 by the rainwater of its groove 6, prevent rainwater in 1 cohesion of drag reduction case Collection.
In this way, when train high-speed cruising, the triangular prism of drag reduction case 1 or 4 side of cylinder protective cover and protective cover net 18 Because of area very little, and protective cover 4 it is triangular prism shaped in four sides of 1 left and right side of drag reduction case and train bottom surface into smaller Acute angle, therefore by air event resistance very little, the air for the front that is open is by the effect of negative pressure in drag reduction case 1 and the high speed of train Forward influence, relative to drag reduction case 1 to be more than the movement of the speed of the travel speed of train, meanwhile, in the strong effect of wind turbine 3 Under be changed the direction of motion, along drag reduction tube channel garden bottom opening 19, to the air outside drag reduction tube channel ellipse bottom opening 17 In.The pressure being subject to by discharged air gradually acutely reduces and extraneous air acts on, and is relatively safe mixed with outside air It closes.In the process, the direction of motion of air is actively changed by wind turbine 3 and air is made to be run along drag reduction tube channel 2 to drag reduction Outside case 1, the air of 1 forepart of drag reduction case is not in resistance and the air in pressure increase or even 1 epistome of drag reduction case always occurs Certain negative pressure by very big air drag when avoiding bullet train operation, preferably avoids bullet train and crosses and cross tunnel Air pressure wave during road.
Compartment resistance absorber;As shown in Fig. 3, Fig. 4, Fig. 8, in the top surface of compartment 7 and four sides in arranged on left and right sides face The rectangle flow-disturbing frame that a trouble flow strip 12 is set to form respectively,
Further, vertical row vehicle an appropriate number of flow-disturbing in the front-back direction is set respectively between rectangular front and back Item 12, the slightly convex plane in place of all trouble flow strips 12 and waits height, and the cross section of trouble flow strip 12 is trapezoidal, trapezoidal longer bottom Side is located in the tank surface appended by trouble flow strip 12.Trouble flow strip 12 can by appended plane material punching press or additional form. Due to train head drag reduction case 1 width and height be slightly larger than or equal to compartment 7 width and height and trouble flow strip 12 Interference, when train high-speed cruising, the air of surrounding quickly moves backward with respect to train, behind train head drag reduction case 1 The air pressure of the top surface, left and right side of compartment 7 be less than atmospheric pressure, 7 top surface of compartment, side trouble flow strip 12 interfere its Air-flow below, makes the air pressure of top surface, side outside trouble flow strip 12 more reduce, the gas between tank surface between trouble flow strip 12 Pressure, reduces with the increase of the bullet train speed of service, in a kind of dynamic balance state.With the pressure of tank surface air-flow Become smaller by force, air becomes smaller to the adherency resistance and frictional resistance of carriage.The left and right two side faces of 7 body of train carriage are because of left and right pair Claim, to each compartment 7 generally speaking, the air effect power of two sides of left and right is cancelled out each other, will not cause compartment 7 it is left, The movement of right two sides or movement tendency.When train high-speed cruising, because 7 bottom surface of compartment does not have trouble flow strip 12, Air pressure is more than 7 top surface air pressure of compartment, a certain size the lift that train carriage body 7 can be acted on by air pressure difference and be occurred Effect, the pressure that rail is subject to is made to subtract compartment lift for the gravity of compartment 7, hence it is evident that less than the gravity of compartment 7, And reduce the rolling frictional resistance between the frictional resistance between train wheel 11 and rail and wheel 11 and 11 axis of wheel.
Anti- negtive-pressure implement;As shown in Fig. 5, Figure 10, at tail portion compartment tail surface 10 and the bogie of tail portion compartment Resistance absorber 9 backmost sets on a compartment bottom surface anti-negtive-pressure implement 24 and anti-under compartment bottom surface one by one respectively Negtive-pressure implement 25, the two are all made of successively anti-negtive-pressure implement buffer part 14, anti-negtive-pressure implement interference portion 13, anti-negtive-pressure implement negative pressure portion 21 Rectangular shape object, anti-13 volume of negtive-pressure implement interference portion and anti-21 volume of negtive-pressure implement negative pressure portion approach, so that air is in the two Between preferably circulate, ensure that air in anti-negtive-pressure implement interference portion 13 maintains more anticyclonic dynamic equilibrium, the two principle, Effect is same.Except that it differs in size, position difference, and anti-24 anti-negative pressure of negtive-pressure implement is done on compartment bottom surface Portion 13 is disturbed there are six opening, and there are five be open for anti-negtive-pressure implement 25 under a compartment bottom surface.In this way, anti-negtive-pressure implement interference portion 13 can in time, effectively interfere negative pressure, to prevent negative pressure from being transmitted more by force to compartment tail surface.Because anti-negtive-pressure implement negative pressure The negative pressure in portion 21 is larger, and anti-negtive-pressure implement interference portion 13 just will appear the air stream of larger pressure, therefore in anti-negtive-pressure implement interference portion 13 Wind-driven generator can be set at interior each opening face, its vertical corresponding opening face of rotor shaft in this way will not be formed train Too big resistance, and be conducive to improve the rotating speed of wind wheel and improve generating efficiency, electricity can be supplied to the electricity system in train With energy saving.
Bogie resistance absorber 9;As shown in Fig. 3, Fig. 8, Fig. 9, Figure 10, the side respectively setting one before and after each bogie 8 Between face under compartment 7 and the 16 place plane of bogie drag reduction case flow-disturbing connecting plate in parallel columns vehicle coach face The straight pentagonal prism drag reduction case 22 of bogie.Bogie drag reduction case flow-disturbing connecting plate 16 is located at other bogie portions in addition to wheel Lowest part below between wheel portion lowest part top, and two straight pentagonal prisms compositions for connecting side before and after bogie 8 turn To frame drag reduction case 9, the straight pentagonal prism drag reduction case 22 of two bogies between two bogies 8 below each compartment 7 connects It is connected into the straight hexagonal prisms drag reduction case 23 of a bogie, the side 20 of the bogie resistance absorber before and after each bogie is with horizontal into one Fixed angle is conducive to reduce the resistance that small part air is formed.

Claims (10)

1. a kind of train head drag reduction case of the drag reduction facility of bullet train, it is characterized in that:Train head drag reduction case is cuboid Shape chamber has oblique circular cylinder cylinder drag reduction tube channel 2, the ellipse of the oblique circular cylinder cylinder drag reduction tube channel in the train head drag reduction case 1 The ellipsoid opening 17 and the external world that face 17 outer rims of opening pass through the connection of drag reduction box top oval opening inner edge and drag reduction tube channel Communicate, there is wind turbine 3 in the drag reduction tube channel 2,1 lower bottom part of train head drag reduction case behind the wind turbine 3 have one it is parallel Rainwater groove 6 in the drag reduction case in the opening of train head drag reduction case 1 face.
2. according to claim 1, a kind of train head drag reduction case 1 of the drag reduction facility of bullet train, it is characterized in that:Train The cross-sectional area of 1 cuboid body cavity of head drag reduction case is not less than 4050 × 3360 square millimeters.
3. according to claim 1, a kind of train head drag reduction case 1 of the drag reduction facility of bullet train, it is characterized in that:Train The oblique circular cylinder drag reduction tube channel 2 of 1 intracavitary of head drag reduction babinet and 1 top surface of train head drag reduction case into acute angle be less than 30 degree.
4. according to claim 1, a kind of train head drag reduction case 1 of the drag reduction facility of bullet train, it is characterized in that:Wind turbine Line where 3 axis crosses the 19 garden heart of round-bottomed face of oblique circular cylinder drag reduction tube channel and the round-bottomed opening 19 of vertical oblique circular cylinder drag reduction tube channel Face.
5. according to claim 1, a kind of train head drag reduction case 1 of the drag reduction facility of bullet train, it is characterized in that:Train The mating display of the camera 5 of head drag reduction case front upper part is connected in driver's cabin.
6. a kind of 7 resistance absorber of compartment of the drag reduction facility of bullet train, top surface and left and right two sides by compartment 7 Face and trouble flow strip composition, it is characterized in that:It is made of on the side of the top surface of compartment 7 and left and right two sides trouble flow strip rectangular Shape frame.
7. according to claim 6, a kind of train vehicle of the drag reduction facility of bullet train, 7 resistance absorbers, it is characterized in that:Trouble flow strip Cross section is trapezoidal or part garden face shape.
8. a kind of anti-negative pressure interference system in the tail portion compartment of the drag reduction facility of bullet train, including anti-negative pressure beneath under compartment The upper anti-negative pressure interference unit 24 of interference unit 25 and compartment bottom, it is characterized in that:Beneath anti-negative pressure interference unit 25 under compartment Upper anti-negative pressure interference unit 24 is gone to the bottom by contour, wide anti-negtive-pressure implement buffer part 14, anti-negtive-pressure implement interference portion with compartment 13rd, anti-negtive-pressure implement negative pressure portion 21 is sequentially communicated composition integrally, and beneath anti-negative pressure interference unit 25 is rectangular under the compartment The cross-sectional area of shape is less than the cross-sectional area of the oblong-shaped of the upper negative pressure interference unit 24 in compartment bottom, the compartment Anti- negative pressure interference unit 25 is connected with 20 rearmost part of bogie resistance absorber under lower, and five faces of the negative pressure interference chamber of its cuboid There is opening, above anti-negative pressure interference unit 24 and last vehicle of train compartment tail surface 10 connect, and its cuboid for the compartment bottom Six faces of negative pressure interference chamber have an opening, resist on beneath anti-negative pressure interference unit 25 and compartment bottom under the compartment There are several fixed specific wind-driven generators in the anti-negtive-pressure implement interference portion 13 of negtive-pressure implement 24.
9. according to claim 8, a kind of anti-negative pressure interference system in tail portion compartment of the drag reduction facility of bullet train, it is characterized in that: The anti-negtive-pressure implement of the upper anti-negative pressure interference unit 24 of beneath anti-negative pressure interference unit 25 or compartment bottom is done under the compartment Disturb the opening face in its vertical corresponding anti-negtive-pressure implement interference portion 13 of rotor shaft of the wind-driven generator in portion 13.
10. a kind of bogie resistance absorber of the drag reduction facility of bullet train, by face under face under compartment and compartment Two adjacent straight pentagonal prism drag reduction casees 22 of the place interplanar of parallel bogie drag reduction case flow-disturbing connecting plate 16 and rectangular The connection composition of bogie drag reduction case flow-disturbing connecting plate 16 of shape, it is characterized in that:Bogie 8 is located at lower two of compartment bottom surface compared with low coverage From the straight pentagonal prism body drag reduction case 22 of bogie between space and its space lower part, 16 institute of bogie drag reduction case flow-disturbing connecting plate Plane below the lowest part of other bogie portions in addition to wheel between wheel portion lowest part top, the bogie Straight pentagonal prism drag reduction case 22 has two sides to be located at 16 institute of face and bogie drag reduction case flow-disturbing connecting plate under compartment respectively The straight pentagonal prism drag reduction case 22 of two bogies between plane, two bogies 8 in each compartment is connected to one and turns It is whole to the straight hexagonal prisms drag reduction case 23 of frame.
CN201810098496.9A 2018-01-31 2018-01-31 A kind of drag reduction facility of bullet train Pending CN108263405A (en)

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CN201810098496.9A CN108263405A (en) 2018-01-31 2018-01-31 A kind of drag reduction facility of bullet train

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Application Number Priority Date Filing Date Title
CN201810098496.9A CN108263405A (en) 2018-01-31 2018-01-31 A kind of drag reduction facility of bullet train

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109263674A (en) * 2018-10-29 2019-01-25 张有明 High-speed rail motor train unit train fresh air system

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JP2005324762A (en) * 2004-05-12 2005-11-24 Mitsuhiro Kawatsu REDUCTION METHOD OF cd VALUE
JP2010076619A (en) * 2008-09-26 2010-04-08 Hitachi Ltd Railroad vehicle
CN102897177A (en) * 2012-10-22 2013-01-30 唐山轨道客车有限责任公司 Head of anti-drag motor train unit
CN103249628A (en) * 2010-11-22 2013-08-14 西门子公司 Rail vehicle with covered bogie
CN105313909A (en) * 2014-08-01 2016-02-10 郭宏斌 A high speed train provided with a resistance reducing device
CN105620500A (en) * 2014-10-28 2016-06-01 上海略帷汽车设计有限公司 Balance-pressure high-speed train head
CN107344560A (en) * 2016-05-05 2017-11-14 郭宏斌 A kind of drag reduction technology that can be used outside bullet train

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005324762A (en) * 2004-05-12 2005-11-24 Mitsuhiro Kawatsu REDUCTION METHOD OF cd VALUE
JP2010076619A (en) * 2008-09-26 2010-04-08 Hitachi Ltd Railroad vehicle
CN103249628A (en) * 2010-11-22 2013-08-14 西门子公司 Rail vehicle with covered bogie
CN102897177A (en) * 2012-10-22 2013-01-30 唐山轨道客车有限责任公司 Head of anti-drag motor train unit
CN105313909A (en) * 2014-08-01 2016-02-10 郭宏斌 A high speed train provided with a resistance reducing device
CN105620500A (en) * 2014-10-28 2016-06-01 上海略帷汽车设计有限公司 Balance-pressure high-speed train head
CN107344560A (en) * 2016-05-05 2017-11-14 郭宏斌 A kind of drag reduction technology that can be used outside bullet train

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109263674A (en) * 2018-10-29 2019-01-25 张有明 High-speed rail motor train unit train fresh air system
CN109263674B (en) * 2018-10-29 2019-10-08 叶盛 High-speed rail motor train unit train fresh air system

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Application publication date: 20180710