CN109278783A - A bogie skirt folding device - Google Patents

A bogie skirt folding device Download PDF

Info

Publication number
CN109278783A
CN109278783A CN201811413237.7A CN201811413237A CN109278783A CN 109278783 A CN109278783 A CN 109278783A CN 201811413237 A CN201811413237 A CN 201811413237A CN 109278783 A CN109278783 A CN 109278783A
Authority
CN
China
Prior art keywords
bogie
skirt
plate
skirtboard
telescopic device
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
Application number
CN201811413237.7A
Other languages
Chinese (zh)
Other versions
CN109278783B (en
Inventor
李田
周鹏
张继业
李明
刘楠
张相宁
安超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwest Jiaotong University
Original Assignee
Southwest Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Southwest Jiaotong University filed Critical Southwest Jiaotong University
Priority to CN201811413237.7A priority Critical patent/CN109278783B/en
Publication of CN109278783A publication Critical patent/CN109278783A/en
Application granted granted Critical
Publication of CN109278783B publication Critical patent/CN109278783B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • 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)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

本发明公开了一种转向架裙板折叠装置，属于轨道车辆技术领域。一种转向架裙板折叠装置，包括：车体、设置于车体两侧的裙板、设置于车体下方的转向架、以及伸缩装置；裙板与车体的侧边缘旋转连接；伸缩装置的一端与车体旋转连接，伸缩装置的另一端与裙板旋转连接，伸缩装置与驱动系统连接。本发明的裙板在轨道车辆正常行驶时，未进行折叠，可以减小列车运行时受到的空气阻力，降低车辆的运行能耗；并且当轨道车辆在丰雪环境下运行时，伸缩装置在驱动系统作用下使转向架两侧裙板折叠，引导高速气流进入转向架周围并带走转向架上的积雪，从而减小积雪结冰对转向架的影响。

The invention discloses a bogie skirt board folding device, which belongs to the technical field of rail vehicles. A bogie skirt board folding device, comprising: a car body, skirt plates arranged on both sides of the car body, a bogie arranged under the car body, and a telescopic device; the skirt plate is rotatably connected with the side edge of the car body; the telescopic device One end of the telescopic device is rotatably connected with the vehicle body, the other end of the telescopic device is rotatably connected with the skirt plate, and the telescopic device is connected with the drive system. The skirt plate of the invention is not folded when the rail vehicle is running normally, which can reduce the air resistance received by the train and reduce the operating energy consumption of the vehicle; and when the rail vehicle is running in a snowy environment, the telescopic device is driven Under the action of the system, the skirts on both sides of the bogie are folded to guide the high-speed airflow into the surrounding of the bogie and take away the snow on the bogie, thereby reducing the impact of snow and ice on the bogie.

Description

A kind of bogie skirtboard folding device
Technical field
The present invention relates to rail vehicle technical fields, and in particular to a kind of bogie skirtboard folding device.
Background technique
With the promotion of rail vehicle speed, in order to reduce influence of the air drag to rail vehicle speed, in railcar Bogie two sides install additional skirtboard carry out drag reduction, usually skirtboard is fixedly mounted on vehicle body.After skirtboard is connected with vehicle body, Cavity is formed between bogie, when rail vehicle is run under Feng Xue environment, snowflake is easy to be involved in this cavity by air-flow, In addition, two side skirt of bogie, which blocks vehicle body side high-speed flow, enters bogie region, snowflake is involved in from vehicle bottom to be turned To frame region, and the regional gas stream speed is low, is easy to cause snowflake to accumulate on bogie and further freezes, and influences bogie Performance.
Summary of the invention
The purpose of the present invention is to provide a kind of bogie skirtboard folding devices, to solve existing rail vehicle in Feng Xuehuan When running under border, occurs the problem of accumulated snow icing around bogie.
The technical scheme to solve the above technical problems is that
A kind of bogie skirtboard folding device, comprising: car body, the skirtboard for being set to car body two sides are set to below car body Bogie and telescopic device；The rotation connection of the side edge of skirtboard and car body；One end of telescopic device and car body rotation connect It connects, the other end and the skirtboard rotation of telescopic device connect, and telescopic device is connect with drive system.
Skirtboard and car body are carried out rotation connection by the present invention, fold skirtboard.Telescopic device is in drive system Drive under skirtboard can be folded to bogie side, bogie regional space is open, in rail vehicle operation, car body side Face high-speed flow enters bogie region by skirtboard open space, so that the air-flow near bogie increases, bogie is attached Close accumulated snow is taken away, or blowing snow grain prevents snow grain from depositing in bogie.When rail vehicle normally travel, skirtboard It is not folded, reduces the air drag being subject to when train operation, and then reduce the operation energy consumption of vehicle；When rail vehicle travels In the operation of ice and snow route, telescopic device folds skirtboard under the drive of drive system, thus under the drive of air-flow Reduce influence of the accumulated snow to bogie.
Further, above-mentioned car body include bottom plate and set on bottom plate both sides of the edge and be located at bottom plate below side plate；Bottom The bottom side of plate and telescopic device rotation connect, and the bottom surface of side plate is contacted with the top surface of skirtboard, the bottom of side plate and the top of skirtboard Rotation connection.
Side plate on car body of the present invention is contacted with skirtboard, makes rail vehicle when operating normally, and side plate and skirtboard being capable of nothings Touching is sewed up, the structure discontinuously influence to rail vehicle speed between side plate and skirtboard is reduced.
Further, above-mentioned skirtboard is equipped with connector, and the bottom rotation of connector and side plate connects.
Skirtboard and side plate are attached by the present invention using connector, are conducive to the seamless connection between skirtboard and side plate, Reduce the structure discontinuously influence to rail vehicle speed between side plate and skirtboard.
Further, the rotation that the rotation junction of above-mentioned connector and side plate is equipped with for monitoring skirtboard rotation angle is compiled Code device, rotary encoder are connect with terminal device.
Rotary encoder of the invention is used to monitor the rotation angle of skirtboard, and the rotation of skirtboard is controlled by terminal device Angle, the angle for rotating skirtboard make to reduce resistance and reduce by two kinds of accumulated snow effects to be able to carry out adjusting, and in difference Ice and snow route can will reduce resistance and reduce by two kinds of accumulated snow effects and adjust to moderate state.
Further, above-mentioned telescopic device is hydraulic stem；Hydraulic stem includes piston and the telescopic rod with piston cooperation, is lived The bottom side of plug and bottom plate, which rotates, to be connected, and telescopic rod and skirtboard rotation connect.
Further, above-mentioned drive system is hydraulic system, and hydraulic system is connect with piston.
Telescopic device of the invention uses hydraulic stem, and drive system uses hydraulic system, compares the rotary motion of skirtboard Stablize, prevents rail vehicle during high-speed cruising, skirtboard occurs shaking or not stablize under the drive of telescopic device The vibration that the skirtboard of movement occurs under airflow function, to occur damaging.
Further, above-mentioned bogie includes suspension arrangement and the framework that is arranged in below suspension arrangement, is set on framework There is wheel.
The invention has the following advantages:
Skirtboard of the invention is not folded in track normal vehicle operation, be can reduce and is subject to when train operation Air drag reduces the operation energy consumption of vehicle；And when rail vehicle is run under Feng Xue environment, telescopic device is in driving Two side skirt of bogie is folded under system effect, guidance high-speed flow enters around bogie and takes away the accumulated snow on bogie, To reduce the influence that accumulated snow freezes to bogie.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bogie skirtboard folding device of the invention；
Fig. 2 is the portion the A enlarged drawing of Fig. 1；
Fig. 3 is the folded structural schematic diagram of skirtboard of the invention.
In figure: 100- car body；110- bottom plate；120- side plate；200- skirtboard；210- connector；300- bogie； 310- suspension arrangement；320- framework；330- wheel；400- hydraulic stem；410- piston；420- telescopic rod.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the invention.
Embodiment
Please refer to Fig. 1, a kind of bogie skirtboard folding device, comprising: car body 100, skirtboard 200 and bogie 300.Skirt The two sides of car body 100 are arranged in plate 200.The lower section of car body 100 is arranged in bogie 300, and bogie 300 includes suspension arrangement 310 and the framework 320 that is arranged in below suspension arrangement 310, the top of suspension arrangement 310 is connect with car body 100, on framework 320 Equipped with wheel.
Referring to figure 2., car body 100 includes bottom plate 110 and side plate 120, and the both sides of the edge of bottom plate 110 are arranged in side plate 120, I.e. the edge of 110 respective carter left and right vehicle wheel two sides of bottom plate, side plate 120 are located at the lower section of bottom plate 110, bottom plate 110 and side plate 120 It is formed inverted U-shaped.Suspension arrangement 310 is connect with the bottom wall of bottom plate 110, and bogie 300 is formed from car body 100 and skirtboard 200 The spatially extended bottom to rail vehicle.
Skirtboard 200 is located at the lower section of side plate 120, and the top surface of skirtboard 200 is contacted with the bottom surface of side plate 120.The top of skirtboard 200 Portion is equipped with connector 210 close to the side of bogie 300, and connector 210 turns by the way that the bottom of Assembly of pin and side plate 120 is close It rotates and connects to the side of frame 300, the rotary coding for rotating angle for monitoring skirtboard 200 is additionally provided at this Assembly of pin Device, rotary encoder are connect with terminal device, keep the rotation angle of skirtboard 200 controllable, and in the present embodiment, rotary encoder is selected (ST) company of STMicw Electronics produces, 32 ARM microcontroller STM32F103ZET6 models of kernel position Cortex-M3, should Model possesses large capacity flash and enough channels FTM, possesses great serious forgiveness and extremely strong stability, and 72MHZ dominant frequency exists Instruction execution speed level ensure that the accuracy of encoder acquisition, and because its whole low-power consumption and its low in price Lattice, in Industry Control comprehension with extensive.The bottom of skirtboard 200 is connect by telescopic device with the bottom side of bottom plate 110, specifically Ground, the bottom of skirtboard 200, which is rotated close to the side of bogie 300 by one end of Assembly of pin and telescopic device, to be connected, bottom plate 110 bottom side is rotated by the other end of Assembly of pin and telescopic device to be connected.Pass through the piston motion of telescopic device, skirtboard 200 can rotate around the bottom of side plate 120, realize that skirtboard 200 is folded to the side of bogie 300.In other realities of the invention It applies in example, skirtboard 200 directly directly can rotate connection by the rotating mechanisms such as Assembly of pin and side plate 120.
In the present embodiment, telescopic device is hydraulic stem 400, and hydraulic stem 400 includes piston 410 and telescopic rod 420, piston 410 cooperate with telescopic rod 420, and telescopic rod 420 is enable to do piston motion in piston 410 under the action of hydraulic oil. Piston 410 is connected by Assembly of pin and the rotation of bottom plate 110, and piston 410 is connect with drive system.Telescopic rod 420 passes through Assembly of pin and the rotation of side plate 120 connect.
In the present embodiment, drive system is hydraulic system, and hydraulic system includes hydraulic pump, and hydraulic pump is mounted on car body 100 bottom, hydraulic pump are connected to by pipeline with piston 410, are that piston 410 injects hydraulic oil by hydraulic pump, are realized skirtboard Seamless connection between 200 and side plate 120, or the hydraulic oil in piston 410 is reduced, realize the folding of skirtboard 200.In addition, Hydraulic pump is also connect with terminal device, and terminal device controls the unlatching of hydraulic pump, the signal transmitted by rotary encoder, control The rotation angle of skirtboard 200.
In the other embodiments of invention, telescopic device can also can be stretched for atmospheric pressure pole, crankshaft connecting rod system etc. The device or mechanism of contracting.Drive system can also be systems or the devices such as baric systerm, motor.
Referring to figure 3., in normally travel, skirtboard 200 and side plate 120 are seamlessly connected rail vehicle, and hydraulic stem is whole at this time Body is in elongation state, and the presence of skirtboard 200 can reduce the air drag that bogie 300 is subject to, and reduces vehicle operation energy consumption. When rail vehicle is run under Feng Xue environment, start hydraulic pump, telescopic rod 420 gradually returns in piston 410, skirtboard 200 to Direction rotation where bogie 300, the regional space opening where bogie 300 causes the air-flow near it to increase, in gas Under the action of stream, the accumulated snow near bogie 300 is blown out, or snow grain is not easy to deposit and accumulate in bogie 300 Snow, avoid bogie 300 is influenced by accumulated snow.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (7)

1.一种转向架裙板折叠装置，其特征在于，包括：车体(100)、设置于所述车体(100)两侧的裙板(200)、设置于所述车体(100)下方的转向架(300)、以及伸缩装置；所述裙板(200)与所述车体(100)的侧边缘旋转连接；所述伸缩装置的一端与所述车体(100)旋转连接，所述伸缩装置的另一端与所述裙板(200)旋转连接，所述伸缩装置与驱动系统连接。1. A bogie skirt plate folding device, characterized in that it comprises: a vehicle body (100), skirt plates (200) arranged on both sides of the vehicle body (100), and skirt plates (200) arranged on the vehicle body (100) A lower bogie (300), and a telescopic device; the skirt plate (200) is rotatably connected to the side edge of the vehicle body (100); one end of the expansion device is rotatably connected to the vehicle body (100), The other end of the telescopic device is rotatably connected with the skirt plate (200), and the telescopic device is connected with the drive system. 2.根据权利要求1所述的转向架裙板折叠装置，其特征在于，所述车体(100)包括底板(110)以及设于所述底板(110)两侧边缘并位于所述底板(110)下方的侧板(120)；所述底板(110)的底侧与所述伸缩装置旋转连接，所述侧板(120)的底面与所述裙板(200)的顶面接触，所述侧板(120)的底部与所述裙板(200)的顶部旋转连接。2 . The bogie skirt panel folding device according to claim 1 , wherein the vehicle body ( 100 ) comprises a bottom plate ( 110 ) and a bottom plate ( 110 ) provided on both side edges of the bottom plate ( 110 ) and located on the bottom plate ( 2 . 2 . 110) below the side plate (120); the bottom side of the bottom plate (110) is rotatably connected with the telescopic device, and the bottom surface of the side plate (120) is in contact with the top surface of the skirt plate (200), so The bottom of the side plate (120) is rotatably connected with the top of the skirt plate (200). 3.根据权利要求2所述的转向架裙板折叠装置，其特征在于，所述裙板(200)上设有连接件(210)，所述连接件(210)与所述侧板(120)的底部旋转连接。3 . The bogie skirt board folding device according to claim 2 , wherein a connecting piece ( 210 ) is provided on the skirt board ( 200 ), and the connecting piece ( 210 ) is connected to the side board ( 120 ). 4 . ) bottom swivel connection. 4.根据权利要求3所述的转向架裙板折叠装置，其特征在于，所述连接件(210)与所述侧板(120)的旋转连接处设有用于监测所述裙板(200)旋转角度的旋转编码器，所述旋转编码器与终端设备连接。4. The bogie skirt panel folding device according to claim 3, characterized in that, a rotational connection between the connecting member (210) and the side panel (120) is provided with a device for monitoring the skirt panel (200) A rotary encoder for the rotation angle, the rotary encoder is connected to the terminal device. 5.根据权利要求2至4任一项所述的转向架裙板折叠装置，其特征在于，所述伸缩装置为液压杆(400)；所述液压杆(400)包括活塞(410)以及与所述活塞(410)配合的伸缩杆(420)，所述活塞(410)与所述底板(110)的底侧旋转连接，所述伸缩杆(420)与所述裙板(200)旋转连接。5. The bogie skirt folding device according to any one of claims 2 to 4, wherein the telescopic device is a hydraulic rod (400); the hydraulic rod (400) comprises a piston (410) and a A telescopic rod (420) matched with the piston (410), the piston (410) is rotatably connected with the bottom side of the bottom plate (110), and the telescopic rod (420) is rotatably connected with the skirt plate (200) . 6.根据权利要求5所述的转向架裙板折叠装置，其特征在于，所述驱动系统为液压系统，所述液压系统与所述活塞(410)连接。6. The bogie skirt panel folding device according to claim 5, wherein the driving system is a hydraulic system, and the hydraulic system is connected with the piston (410). 7.根据权利要求6所述的转向架裙板折叠装置，其特征在于，所述转向架(300)包括悬挂装置(310)以及设置在所述悬挂装置(310)下方的构架(320)，所述构架(320)上设有车轮(330)。7. The bogie skirt folding device according to claim 6, wherein the bogie (300) comprises a suspension device (310) and a frame (320) arranged below the suspension device (310), Wheels (330) are arranged on the frame (320).
CN201811413237.7A 2018-11-23 2018-11-23 A bogie skirt folding device Active CN109278783B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811413237.7A CN109278783B (en) 2018-11-23 2018-11-23 A bogie skirt folding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811413237.7A CN109278783B (en) 2018-11-23 2018-11-23 A bogie skirt folding device

Publications (2)

Publication Number Publication Date
CN109278783A true CN109278783A (en) 2019-01-29
CN109278783B CN109278783B (en) 2020-08-04

Family

ID=65172612

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811413237.7A Active CN109278783B (en) 2018-11-23 2018-11-23 A bogie skirt folding device

Country Status (1)

Country Link
CN (1) CN109278783B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110588684A (en) * 2019-09-05 2019-12-20 中车青岛四方机车车辆股份有限公司 A body steering adaptive skirt
CN115465315A (en) * 2022-09-28 2022-12-13 中南大学 Control method of high-speed train bogie skirt

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2558664A1 (en) * 1975-12-24 1977-07-07 Wegmann & Co Railway wagon sidewall extension apron - with parts moving open for service access and closing automatically for high speed operation
CN201457386U (en) * 2009-08-06 2010-05-12 上海磁浮交通发展有限公司 Maglev track inspection vehicle compartment skirt
CN104354716A (en) * 2014-10-10 2015-02-18 南车青岛四方机车车辆股份有限公司 Flow guide snow-drift control device for rail vehicle
CN205168505U (en) * 2015-12-01 2016-04-20 唐山轨道客车有限责任公司 Skirtboard connection structure and body construction
CN106740959A (en) * 2016-11-30 2017-05-31 中车长春轨道客车股份有限公司 A kind of Highs-speed motor train unit bogie apron board mounting structure
CN206255007U (en) * 2016-06-14 2017-06-16 中车长春轨道客车股份有限公司 A kind of skirtboard mechanism and rail vehicle
CN207481902U (en) * 2017-10-27 2018-06-12 中车青岛四方机车车辆股份有限公司 A kind of rail vehicle turns down skirtboard

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2558664A1 (en) * 1975-12-24 1977-07-07 Wegmann & Co Railway wagon sidewall extension apron - with parts moving open for service access and closing automatically for high speed operation
CN201457386U (en) * 2009-08-06 2010-05-12 上海磁浮交通发展有限公司 Maglev track inspection vehicle compartment skirt
CN104354716A (en) * 2014-10-10 2015-02-18 南车青岛四方机车车辆股份有限公司 Flow guide snow-drift control device for rail vehicle
CN205168505U (en) * 2015-12-01 2016-04-20 唐山轨道客车有限责任公司 Skirtboard connection structure and body construction
CN206255007U (en) * 2016-06-14 2017-06-16 中车长春轨道客车股份有限公司 A kind of skirtboard mechanism and rail vehicle
CN106740959A (en) * 2016-11-30 2017-05-31 中车长春轨道客车股份有限公司 A kind of Highs-speed motor train unit bogie apron board mounting structure
CN207481902U (en) * 2017-10-27 2018-06-12 中车青岛四方机车车辆股份有限公司 A kind of rail vehicle turns down skirtboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110588684A (en) * 2019-09-05 2019-12-20 中车青岛四方机车车辆股份有限公司 A body steering adaptive skirt
CN115465315A (en) * 2022-09-28 2022-12-13 中南大学 Control method of high-speed train bogie skirt
CN115465315B (en) * 2022-09-28 2025-01-28 中南大学 Control method of high-speed train bogie skirt

Also Published As

Publication number Publication date
CN109278783B (en) 2020-08-04

Similar Documents

Publication Publication Date Title
US7780223B2 (en) Aerodynamically activated front skirt for a vehicle
US5522637A (en) Auxiliary braking panels for a tractor trailer combination
CN108482412A (en) A kind of anti-accumulated snow guiding device of adjustable train
CN207672506U (en) Three-in one machine field strength wind snow sweeper
CN113264070B (en) Inter-city train is with vortex device
CN109278783A (en) A bogie skirt folding device
CN201512288U (en) Y-shaped railroad switch in air
CN108099942A (en) A kind of fan wheel auxiliary braking formula railcar
CN108216391B (en) automobile rear protective lower guard plate structure
CN111267969A (en) Angle self-adaptive adjustment's sectional type cycle racing fin system
CN202413841U (en) Wind resistance brake device of high-speed train
WO2017071671A1 (en) Method of using wind energy at vehicle interior and exterior and windshield air curtain device
CN202247770U (en) Snow blowing device and snow sweeper
CN205160002U (en) Cylinder defroster of on -vehicle pneumatics of electronic railway connecting net
CN219029407U (en) Lift wing device of high-speed maglev train
CN109353489B (en) Multifunctional flap structure of unmanned aerial vehicle
CN212386490U (en) Prevent frozen optimization water conservancy diversion structure of bogie snow based on flow control
CN214823697U (en) Electric lifting folding tail wing of automobile
CN107933229A (en) Balloon flighter quadrotor flight trolley
CN111791847A (en) Active control airfoil device and system for a maglev train
CN219635346U (en) Concealed multi-active rear spoiler mechanism and automobile
CN108297948B (en) Full-variable tail wing for racing car
CN113291332B (en) Special shroud for heavy-duty EMUs
CN109278766A (en) A new wheel-rail high-speed train system
CN201385664Y (en) sky rail car

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