CN108423028B - A kind of rail vehicle anti roll device - Google Patents
A kind of rail vehicle anti roll device Download PDFInfo
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- CN108423028B CN108423028B CN201810455271.4A CN201810455271A CN108423028B CN 108423028 B CN108423028 B CN 108423028B CN 201810455271 A CN201810455271 A CN 201810455271A CN 108423028 B CN108423028 B CN 108423028B
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- longitudinal
- guide tube
- bar
- air bag
- pipe line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/02—Scotch blocks, skids, or like track-engaging shoes
- B61H7/04—Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a kind of rail vehicle anti roll devices, belong to rail vehicle active security technology area.Bogie crossbeam is equipped with flap seat, and flap seat bottom is equipped with " L shape " cantilever, and the horizontal ends of cantilever and the inside outer wall of the internal longitudinal steel cylinder for being equipped with the longitudinal branch of air pipe line two are fixed, and the lug of longitudinal guide tube tail portion and longitudinal steel cylinder interface are hinged；Longitudinal branch end of air pipe line two is connect with longitudinal air bag tail portion；The front end of longitudinal air bag and longitudinal piston tail of longitudinal guide tube inner wall cooperation are fixed, lateral guide tube is fixed between two flap seats, air pipe line one is connect with lateral air bag, lateral air bag front end and the horizontal piston of lateral guide tube inner wall cooperation are fixed, the top of triangle flexural pivot chain mechanism is the upper end of middle bar, and bottom edge is that the rear end of longitudinal guide tube at longitudinal steel cylinder and its both ends is constituted；The air pipe line for being separately connected longitudinally, laterally air bag is rubber hose, and air pipe line is equipped with solenoid valve.It is mainly used for rail vehicle anti roll device.
Description
Technical field
The present invention relates to rail locomotive vehicle active safety technologies fields.
Background technique
Currently, the traditional skate used on China railways station, is all bilateral brake shoe, composition is divided into two parts:
Bottom and head.Bottom: in wheel pedal after sole, being blocked wheel using head, and shoes and wheel is made to slide jointly and play braking
Effect.Toe-cap, baffle two parts are divided in head.So-called skate braking, exactly places skate on one or two rail, rolls forward
It is just slided along rail after skate on dynamic pressure wheel, sliding friction is become from rolling friction between wheel track, detent roller is prevented to advance, risen
Braking action.Skate is suitable for various various sizes of rail levels and uses, when vehicle wheel is to scotch block is set foot on, scotch block locking dress
Set automatic opening, run with vehicle synchronous, and can smoothly pass through rail joint, when vehicle wheel to back off scotch block when, scotch block
Automatic blocking on rail level, is realized that rail vehicle is anti-slip by locking device.Traditional equipment needs to stretch forward under the bogie of car, uses
There is the personal security risk such as meet and discuss in inconvenience, due to damage with lose or worker operation fault be easy to cause train runaway,
The safety on railway is seriously affected, and bottom profiled and wheel track profile are inconsistent on skate, being easy scratch wheel track causes crackle to be sprouted
Raw, there are security risks.
This rail vehicle anti roll device very good solution provided by the invention above problem utilizes computer actively
The on-off of solenoid valve is controlled to adjust air bag pressure, and then controls the expansion and folding of the flexible and entire anti-skid device of skate,
Automatic adjustment, reaction speed are fast.Bottom profiled is consistent with wheel track profile on skate, and toe cap can be rotated around shoe body, adjust automatically
Anti-slip angle, fits closely, and will not abrade wheel track；With easy to operate, foldable folding and unfolding occupies little space, and support wheel is steady
Gu the advantages that securely and reliably, applicable range is big, easy to use, high-efficient.
Summary of the invention
The object of the present invention is to provide a kind of rail vehicle anti roll devices, it can efficiently solve rolling stock pressure maintaining system
When dynamic and hand brake force deficiency the problem of car slipping.
Mesh of the invention is achieved through the following technical solutions: a kind of rail vehicle anti roll device, including is turned to
Frame, shoe body and toe cap, the both ends of bogie crossbeam are equipped with the flap seat of " shoe fastener " structure, and flap seat bottom is equipped with and vertically hangs
Bar, the bottom end of vertical sunpender are equipped with opening direction " inverted U-shaped " interface coaxial with bogie crossbeam, " L of the horizontal ends towards outside
The vertical end of shape " cantilever with should " inverted U-shaped " interface it is hinged, the horizontal ends of " L shape " cantilever and internal to be equipped with air pipe line two longitudinal
The inside outer wall of longitudinal steel cylinder of branch is fixed, and it is vertical with bogie crossbeam axis that the both ends of longitudinal steel cylinder are equipped with opening direction
" U-shaped " interface, the lug of longitudinal guide tube tail portion and " U-shaped " interface are hinged；Longitudinal branch end of air pipe line two and longitudinal direction
The connection of air bag tail portion；Longitudinal air bag tail end is fixed with longitudinal guide tube tail end inner wall, the front end of longitudinal air bag and longitudinal guide tube inner wall
Longitudinal piston tail of cooperation is fixed, and piston rod and the shoe body of longitudinal pistons end are fixed, and shoe body is cut with scissors with toe cap by toe cap pin
It connects；Lateral guide tube is fixed between two flap seats of the forward and backward crossbeam of bogie, the tail end of air pipe line one and lateral air bag
Connection, the inner wall of end for the lateral guide tube that lateral air bag tail end is closed with both ends are fixed, front end and lateral guide tube inner wall cooperation
Horizontal piston is fixed, and lateral guide tube bottom is equipped with the through slot cooperated with horizontal piston bar；The top of triangle flexural pivot chain mechanism is
The upper end of middle bar, bottom edge are that the rear end of longitudinal guide tube at longitudinal steel cylinder and its both ends is constituted；Join with high-pressure cylinder and vacuum cylinder
Logical air pipe line one and the total road of air pipe line two is steel pipe, and the branch that the left and right sides is separately connected longitudinally, laterally air bag is
Rubber hose, air pipe line are always equipped with solenoid valve on the road.
The anti roll device is symmetricly set on the lower section of framework.
Main line one end of the air pipe line one connects high-pressure cylinder by three-way solenoid valve, and the other end is divided into through threeway
Left and right two connects the branch of lateral air bag；Main line one end of air pipe line two is divided into left and right two after passing through electromagnetism two-way valve three
Branch, left branch connect vacuum cylinder through electromagnetism two-way valve one, and right branch connects high-pressure cylinder through electromagnetism two-way valve two, another
End is divided into the branch that left and right two connects longitudinal air bag through threeway.
Further, the middle bar top, upper left bar top of the flexural pivot chain mechanism, upper right bar top three collectively form with
The hinged ball of horizontal piston bar twists joint, upper surface ball-joint in the middle part of the lower end of middle bar and longitudinal steel cylinder；Lower-left bar lower end and a left side
The guide tube tail end upper surface ball-joint of side longitudinal direction, upper end and the lower end ball-joint of upper left bar, bottom right bar lower end and right side longitudinal direction guide tube ball
Hingedly, upper end and the lower end ball-joint of upper right bar, left bar left end and upper left bar lower end collectively form on flexural pivot joint and lower-left bar
Hold ball-joint, ball-joint in the middle part of right end and middle bar；The lower end end of bar right end and upper right bar collectively forms flexural pivot joint and the right side in the right side
Ball-joint in the middle part of the upper end ball-joint of lower beam, left end and middle bar.
The toe cap and the upper surface profile of shoe body are consistent with wheel tread, and following table facial contour is consistent with rail top surface, shoe body
Pin hole outer wall be provided with 60 degree of fan groove, toe cap pin is fixed on toe cap and hinged with shoe body, and toe cap pin plunger can be in shoe body
Fan groove in rotation.
This rail vehicle anti roll device of the present invention utilizes the logical of computer active control solenoid valve to be a kind of
Break to adjust air bag pressure, and then controls the expansion and folding of the flexible and entire anti-skid device of skate, automatic adjustment, reaction speed
Degree is fast.Bottom profiled is consistent with wheel track profile on skate, and toe cap can be rotated around shoe body, the anti-slip angle of adjust automatically, close to paste
It closes, wheel track will not be abraded；With easy to operate, foldable folding and unfolding occupies little space, and support wheel is firm, securely and reliably, is applicable in
Range it is big, it is easy to use, it is high-efficient the advantages that.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is expansion partial structural diagram of the invention；
Fig. 4 is deployment balloon status diagram of the invention；
Fig. 5 is folding partial structural diagram of the invention；
Fig. 6 is folded airbag status diagram of the invention；
Fig. 7 is folded airbag status diagram of the invention；
Fig. 8 is partial sectional view of the invention；
Fig. 9 is partial left side view of the invention；
Figure 10 is that toe cap of the invention and shoe body cooperate schematic diagram；
Specific embodiment
As shown in Figure 1, a kind of rail vehicle anti roll device, bogie, shoe body 2 and toe cap 1, it is characterised in that: turn to
The both ends of frame crossbeam are equipped with the flap seat 11 of " shoe fastener " structure, and 11 bottom of flap seat is equipped with vertical sunpender 22, vertical sunpender 22
Bottom end be equipped with opening direction " inverted U-shaped " interface coaxial with bogie crossbeam, horizontal ends towards outside " L shape " cantilever it is vertical
Straight end with should " inverted U-shaped " interface it is hinged, the horizontal ends of " L shape " cantilever and the internal longitudinal direction for being equipped with the longitudinal branch of air pipe line 2 15
The inside outer wall of steel cylinder 6 is fixed, and the both ends of longitudinal steel cylinder 6 are equipped with opening direction " U-shaped " vertical with bogie crossbeam axis and connect
Mouthful, the lug of longitudinal 5 tail portion of guide tube and " U-shaped " interface are hinged；Longitudinal branch end of air pipe line 2 15 and longitudinal air bag 4
Tail portion connection；Longitudinal 4 tail end of air bag is fixed with longitudinal 5 tail end inner wall of guide tube, 5 inner wall of the front end of longitudinal air bag 4 and longitudinal guide tube
Longitudinal piston 3 of cooperation is fixed；Longitudinal piston rod and shoe body 2 are fixed, and shoe body 2 and toe cap 1 are hinged by toe cap pin 21；Laterally lead
Between two flap seats 11 of the forward and backward crossbeam that cylinder 8 is fixed on bogie side, the tail end of air pipe line 1 and lateral air bag
9 connections, the inner wall of end for the lateral guide tube 8 that lateral 9 tail end of air bag is closed with both ends are fixed, and front end is matched with lateral 8 inner wall of guide tube
The horizontal piston 10 of conjunction is fixed, and lateral 8 bottom of guide tube is equipped with and 10 through slot of horizontal piston；The top of triangle flexural pivot chain mechanism 7
For middle 71 upper end of bar, bottom edge is 5 rear end of the longitudinal guide tube composition at longitudinal steel cylinder 6 and its both ends；High-pressure cylinder 12 and vacuum cylinder
13 are separately connected longitudinally, laterally air bag by air pipe line, and air pipe line is equipped with electromagnetism two-way valve.The anti roll device pair
Claim the lower section that framework is set.Main line one end of the air pipe line 1 connects high-pressure cylinder by three-way solenoid valve 18
12, the other end is divided into the branch that left and right two connects lateral air bag 9 through threeway；Main line one end of air pipe line 2 15 passes through electricity
It is divided into two branches in left and right after magnetic two-way valve 3 19, left branch connects vacuum cylinder 13, right branch warp through electromagnetism two-way valve 1
Electromagnetism two-way valve 2 17 connects high-pressure cylinder 12, and the other end is divided into the branch that left and right two connects longitudinal air bag 4 through threeway.With height
The air pipe line 1 of 13 connection of air cylinder 12 and vacuum cylinder and the total road of air pipe line 2 15 are steel pipe, and the left and right sides connects respectively
The branch for connecing longitudinally, laterally air bag is rubber hose, and air pipe line is always equipped with solenoid valve on the road.The air pipe line 1
The aperture that two sides bye-pass is respectively protruding into 8 end wall of lateral guide tube of the left and right sides is connect with lateral air bag 9；2 15 points of air pipe line
It is respectively protruding into for two bye-passes inside longitudinal steel cylinder 6 of the left and right sides, passes through the aperture and longitudinal air bag 4 of longitudinal 5 end wall of guide tube
Connection.
Further, 71 top of middle bar, 73 top of upper left bar of the flexural pivot chain mechanism 7,75 top three of upper right bar are total
Isomorphism balling-up twists joint and 23 ball-joint of horizontal piston bar, the 6 middle part upper surface ball-joint of the lower end of middle bar 71 and longitudinal steel cylinder；It is left
72 lower end of lower beam and the 5 tail end upper surface ball-joint of left side longitudinal direction guide tube, upper end and the 73 lower end ball-joint of upper left bar, under bottom right bar 74
End and 5 ball-joint of right side longitudinal direction guide tube, upper end and the 75 lower end ball-joint of upper right bar, left 76 left end of bar and 73 lower end of upper left bar are total
Isomorphism is at flexural pivot joint and the 72 upper end ball-joint of lower-left bar, right end and middle 71 middle part ball-joint of bar；77 right end of bar and upper right in the right side
The lower end end of bar 75 collectively forms the upper end ball-joint in flexural pivot joint Yu bottom right bar 74, left end and middle 71 middle part ball-joint of bar.Institute
The upper surface profile for stating toe cap 1 and shoe body 2 is consistent with 20 tyre tread of wheel, and following table facial contour is consistent with rail top surface, the pin hole of shoe body 2
Outer wall is provided with 60 degree of fan groove, and toe cap pin 21 is fixed on toe cap 1 and hinged with shoe body 2.
This rail vehicle anti roll device is a kind of on-off using computer active control solenoid valve to adjust air bag
Air pressure, and then the expansion and folding of the flexible and entire anti-skid device of skate are controlled, it automatically adjusts, reaction speed is fast.On skate
Bottom profiled is consistent with wheel track profile, and toe cap can be rotated around shoe body, and the anti-slip angle of adjust automatically is fitted closely, will not be abraded
Wheel track；With easy to operate, foldable folding and unfolding occupies little space, and support wheel is firm, and securely and reliably, applicable range is big, makes
With the advantages that convenient, high-efficient.When rolling stock parking, anti roll device is in folded state, and drivers' cab is to electromagnetic three-way
One exhaust electric signal of valve, three-way solenoid valve Exhaust Open, the gas slowly emptying in lateral air bag, under gravity
Flexural pivot chain mechanism hauls horizontal piston to the movement of framework two sides, and longitudinal steel cylinder of skate, longitudinal guide tube and air pipe line two is slow
Decentralization, when skate falls on rail top surface, drivers' cab gives three-way solenoid valve one closing electric signal, gives electromagnetism two-way valve two and electromagnetism
31 opening electric signals of two-way valve, high-pressure cylinder start to four longitudinal air bag inflations, and longitudinal air bag expands against longitudinal work
Plug moves from inside to outside in longitudinal guide tube, and longitudinal piston rod pushes shoe body mobile, and toe cap slowly moves and rotates adjusting angle slightly
Degree, when shoe body and toe cap and wheel contact, drivers' cab gives electromagnetism two-way valve two and electromagnetism two-way valve 31 closing electric signals,
Longitudinal air bag is in state of pressure keeping, and skate supports wheel firm, prevents car slipping.When rolling stock starting, drivers' cab is to electromagnetism
31 opening electric signals of two-way valve one and electromagnetism two-way valve, vacuum cylinder start to absorb the gas in four longitudinal air bags, with
The fixed air bag one end of longitudinal piston drives longitudinal piston to move inward in longitudinal guide tube, and longitudinal piston rod pulls shoe body to be detached from
It is contacted with wheel, skate returns to original position.Then drivers' cab gives electromagnetism two-way valve one and electromagnetism two-way valve 31 closing electric signals,
Give three-way solenoid valve one opening electric signal, high-pressure cylinder start give lateral air bag inflation, lateral air bag head on horizontal piston to
Framework medial motion, horizontal piston bar drive flexural pivot chain structure inwardly to move, and lower-left bar and bottom right bar drive former and later two longitudinal directions
Guide tube is turned folding around longitudinal steel cylinder of air pipe line two, while middle bar hauls longitudinal steel cylinder and turns folding around flap seat, when
When longitudinal guide tube is rotated by 90 ° upwards around longitudinal cylinder barrel, longitudinal steel cylinder is also rotated by 90 ° around flap seat, and drivers' cab is to electricity at this time
One closing electric signal of magnetic triple valve, lateral air bag are in state of pressure keeping, and anti roll device, which folds, to be completed.
Specific embodiment of the present invention does not constitute the limitation to the application range, all in present inventive concept
Within spirit and principle, any modifications, equivalent replacements, and improvements etc. that one of skill in the art can make be should be included in
Within protection scope of the present invention.
Claims (6)
1. a kind of rail vehicle anti roll device, including bogie, shoe body (2) and toe cap (1), it is characterised in that: bogie is horizontal
The both ends of beam are equipped with the flap seat (11) of " shoe fastener " structure, and flap seat (11) bottom is equipped with vertical sunpender (22), vertical sunpender
(22) bottom end is equipped with opening direction " inverted U-shaped " interface coaxial with bogie crossbeam, " L shape " cantilever of horizontal ends towards outside
Vertical end with should " inverted U-shaped " interface it is hinged, the horizontal ends of " L shape " cantilever and internal be equipped with the longitudinal branch of air pipe line two (15)
The inside outer wall of longitudinal steel cylinder (6) fix, it is vertical with bogie crossbeam axis that the both ends of longitudinal steel cylinder (6) are equipped with opening direction
" U-shaped " interface, the lug of longitudinal guide tube (5) tail portion and should " U-shaped " interface it is hinged；Longitudinal branch end of air pipe line two (15)
Portion is connect with longitudinal air bag (4) tail portion；Longitudinal air bag (4) tail end is fixed with longitudinal guide tube (5) tail end inner wall, longitudinal air bag (4)
Front end and longitudinal piston (3) tail portion of longitudinal guide tube (5) inner wall cooperation fix, the piston rod and shoe body of longitudinal pistons end
(2) fixed, shoe body (2) and toe cap (1) are hinged by toe cap pin (21)；Lateral guide tube (8) is fixed on the forward and backward crossbeam of bogie
Two flap seats (11) between, the tail end of air pipe line one (14) connect with lateral air bag (9), lateral air bag (9) tail end and
The inner wall of end of the lateral guide tube (8) of both ends closure is fixed, and the horizontal piston (10) of front end and lateral guide tube (8) inner wall cooperation is solid
Fixed, lateral guide tube (8) bottom is equipped with the through slot cooperated with horizontal piston bar；The top of triangle flexural pivot chain mechanism (7) is middle bar
(71) upper end, bottom edge are that the rear end of longitudinal guide tube (5) at longitudinal steel cylinder (6) and its both ends is constituted；With high-pressure cylinder (12) and
The total road of the air pipe line one (14) and air pipe line two (15) of vacuum cylinder (13) connection is steel pipe, and the left and right sides is separately connected vertical
It is rubber hose to the branch of, lateral air bag, air pipe line is always equipped with solenoid valve on the road.
2. a kind of rail vehicle anti roll device according to claim 1, it is characterised in that: the anti roll device is symmetrical
The lower section of framework is set.
3. a kind of rail vehicle anti roll device according to claim 1, it is characterised in that: the air pipe line one (14)
Main line one end by three-way solenoid valve (18) connection high-pressure cylinder (12), the other end is divided into two connections in left and right cross through threeway
To the branch of air bag (9)；Main line one end of air pipe line two (15) is divided into left and right two after passing through electromagnetism two-way valve three (19)
Branch, left branch connect vacuum cylinder (13) through electromagnetism two-way valve one (16), and right branch connects high through electromagnetism two-way valve two (17)
Air cylinder (12), the other end are divided into the branch that left and right two connects longitudinal air bag (4) through threeway.
4. a kind of rail vehicle anti roll device according to claim 3, which is characterized in that the air pipe line one (14)
Two sides bye-pass be respectively protruding into the left and right sides lateral guide tube (8) end wall aperture with transverse direction air bag (9) connect；Air pipe line
Two (15) are divided into longitudinal steel cylinder (6) inside that two bye-passes are respectively protruding into the left and right sides, pass through the aperture of longitudinal guide tube (5) end wall
It is connect with longitudinal air bag (4).
5. a kind of rail vehicle anti roll device according to claim 1, which is characterized in that the flexural pivot chain mechanism (7)
Middle bar (71) top, upper left bar (73) top, upper right bar (75) top, three collectively forms hinged with horizontal piston bar (23)
Ball twist joint, upper surface ball-joint in the middle part of the lower end of middle bar (71) and longitudinal steel cylinder (6)；Lower-left bar (72) lower end and left side are vertical
To guide tube (5) tail end upper surface ball-joint, upper end and upper left bar (73) lower end ball-joint, bottom right bar (74) lower end and right side are longitudinal
Guide tube (5) ball-joint, upper end and upper right bar (75) lower end ball-joint, left bar (76) left end and the common structure in upper left bar (73) lower end
At flexural pivot joint and lower-left bar (72) upper end ball-joint, ball-joint in the middle part of right end and middle bar (71)；Bar (77) right end and the right side in the right side
The lower end of upper boom (75) collectively forms the upper end ball-joint in flexural pivot joint Yu bottom right bar (74), flexural pivot in the middle part of left end and middle bar (71)
It connects.
6. a kind of rail vehicle anti roll device according to claim 1, which is characterized in that the toe cap (1) and shoe body
(2) upper surface profile is consistent with wheel (20) tyre tread, and following table facial contour is consistent with rail top surface, and the pin hole outer wall of shoe body (2) is opened
There is 60 degree of a fan groove, toe cap pin (21) is fixed on toe cap (1) and hinged with shoe body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455271.4A CN108423028B (en) | 2018-05-14 | 2018-05-14 | A kind of rail vehicle anti roll device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455271.4A CN108423028B (en) | 2018-05-14 | 2018-05-14 | A kind of rail vehicle anti roll device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108423028A CN108423028A (en) | 2018-08-21 |
| CN108423028B true CN108423028B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810455271.4A Active CN108423028B (en) | 2018-05-14 | 2018-05-14 | A kind of rail vehicle anti roll device |
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| CN (1) | CN108423028B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110949441A (en) * | 2019-12-25 | 2020-04-03 | 重庆艾博瑞威轨道交通设备有限公司 | Automatic anti-sliding skate device of rail sightseeing train and rail sightseeing train |
| CN113200072A (en) * | 2021-06-15 | 2021-08-03 | 武汉铁路职业技术学院 | Anti-backward-sliding device for rail transit vehicle and control method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2091360B (en) * | 1980-11-28 | 1985-05-01 | Underground Mining Mach | Braking system for a mine rail car bogie |
| SU1652137A1 (en) * | 1989-03-30 | 1991-05-30 | Джамбулский гидромелиоративно-строительный институт | Braking device of vehicle |
| CN103112474A (en) * | 2013-03-08 | 2013-05-22 | 中铁五局（集团）有限公司 | Electromobile with forcing braking device |
| CN205098216U (en) * | 2015-11-01 | 2016-03-23 | 兰州交通大学 | Swift current stopper is prevented to railway train |
| CN105667536B (en) * | 2016-03-29 | 2018-07-31 | 中铁五局集团有限公司 | A kind of track-laying machine self-actuating brake skate |
| CN207345841U (en) * | 2017-10-31 | 2018-05-11 | 华能宁夏大坝发电有限责任公司 | A kind of anti-slip skate of railway locomotive |
| CN208198432U (en) * | 2018-05-14 | 2018-12-07 | 西南交通大学 | A kind of rail vehicle anti roll device |
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2018
- 2018-05-14 CN CN201810455271.4A patent/CN108423028B/en active Active
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