CN207617731U - A kind of bogie structure of PRT suspension trains and the operating system containing the bogie structure - Google Patents
A kind of bogie structure of PRT suspension trains and the operating system containing the bogie structure Download PDFInfo
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- CN207617731U CN207617731U CN201721742064.4U CN201721742064U CN207617731U CN 207617731 U CN207617731 U CN 207617731U CN 201721742064 U CN201721742064 U CN 201721742064U CN 207617731 U CN207617731 U CN 207617731U
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Abstract
The utility model discloses a kind of bogie structures of PRT suspension trains, including "-" type framework main body and the traveling wheel mounting base being fixed in framework main body, the both ends of framework main body be additionally provided with directive wheel mounting base and with the orthogonal vertical girder construction of framework main body；The top of vertical girder construction is equipped with steady wheel mounting base；Traveling wheel mounting base, directive wheel mounting base and steady wheel mounting base are symmetrical arranged both with respect to framework main body both sides；Traveling wheel is installed in traveling wheel mounting base；Directive wheel is installed in directive wheel mounting base, steady wheel is installed in steady wheel mounting base；Steady wheel is located at the surface of directive wheel.The bogie structure of the utility model uses "-" type framework main body, therefore entire bogie structure is made to have the lateral dimension of very little, and then also can effectively reduce the lateral dimension of walking beam in suspension type monorail traffic system.The invention also discloses the PRT suspension train operating systems containing above-mentioned bogie structure.
Description
Technical field
The utility model is related to a kind of bogie structures of PRT suspension trains, further relate to containing above-mentioned bogie structure
PRT suspension train operating systems, belong to urban rail transit technology field.
Background technology
It builds with Chinese Urbanization and constantly accelerates, the traffic problems in city are faced with more acid test.It is existing
Urban public tranlport system cannot meet the Urban traffic demand of increasingly congestion.In order to solve urban traffic blocking, energetically
Development of Urban public transport is a kind of preferable selection.Transport power main line of the subway system as urban track traffic at present.But
Subway system construction cost is high, and the period is long, and there is large effect in when construction to the existing infrastructure in city, is wanted to terrain
Ask more stringent.And road surface public transportation system has tended to be saturated, therefore suspension type monorail traffic system can be good
It solves the above problems.
Suspension type monorail traffic system has short construction period, and construction cost is low, and the requirement for terrain is relatively low, right
Existing urban infrastructure construction influences smaller, low noise.Simultaneously as a kind of traffic system of medium and small freight volume, can and ground
Iron system is organically unified, and is complementary to one another, and alleviates traffic.But existing suspension type monorail traffic system is to a certain degree
On alleviate the congestion of urban road, but it walks that cross girders is all more huge, and the daylighting and beauty of avenue are caused
Certain influence.
Utility model content
Purpose of utility model：The technical problem to be solved by the utility model is to provide a kind of steerings of PRT suspension trains
Frame structure, the bogie structure use "-" type framework main body, therefore make lateral dimension of the entire bogie structure with very little,
And then it also can effectively reduce the lateral dimension of walking beam in suspension type monorail traffic system.
The utility model also technical problems to be solved are to provide the operation of the PRT suspension trains containing above-mentioned bogie structure
System, the operating system can realize the connection of suspension train and bogie structure, while can also realize bogie structure and hang
The transmission of power between extension train.
In order to solve the above technical problems, technical solution used by the utility model is：
A kind of bogie structure of PRT suspension trains, including "-" type framework main body and be fixed in framework main body
Traveling wheel mounting base, the both ends of the framework main body are additionally provided with directive wheel mounting base and orthogonal vertical with framework main body
Girder construction；The top of the vertical girder construction is equipped with steady wheel mounting base；The traveling wheel mounting base, directive wheel mounting base and steady
Fixed wheel mounting base is symmetrical arranged both with respect to framework main body both sides；Traveling wheel is installed in the traveling wheel mounting base；Directive wheel
Directive wheel is installed in mounting base, steady wheel is installed in steady wheel mounting base；The steady wheel is located at the surface of directive wheel.
Wherein, the traveling wheel is made of aerated rubber tyre and outer rotor hub motor, and traveling wheel uses outer rotor wheel
Hub motor can be transferred torque to directly on traveling wheel, simultaneously because there is no gear device in traveling wheel, it can be very big
Reduce the volume and noise of traveling wheel in ground.
Wherein, the directive wheel and steady wheel are solid tire, and directive wheel is in the both ends of framework main body, steady wheel position
In the surface of directive wheel, the effect of directive wheel is mainly that traveling wheel play the guiding role, and steady wheel is played due to bogie cross
To the effect that span is small and prevents it from sidewindering.
Wherein, brake disc is installed on the wheel hub on the inside of the traveling wheel, braking is installed in the traveling wheel mounting base
Clamp, two brake linings of the brake clamp are located at the side of brake disc, and brake clamp passes through the frictional force that is generated with brake disc
It realizes braking, when braking, so that two brake linings is pressed on braking disc side with brake clamp, the friction for passing through the two generates braking
Power.
Wherein, the traveling wheel is connect by flat key with traveling wheel mounting base, and with locking on the inside of traveling wheel mounting base
Nut is fixed.
A kind of operating system of PRT suspension trains, further includes the suspension arrangement being fixedly connected with bogie structure, described outstanding
Hang device includes roof girder construction, bolster structure, spring cushion and the central towing pin being vertically embedded into bolster structure；Institute
Central towing pin is stated to be fixedly connected with the "-" type framework main body of bogie structure.
Compared with the prior art, technical solutions of the utility model have the advantage that for：
The bogie structure of the utility model uses "-" type framework main body, therefore entire bogie structure is made to have very little
Lateral dimension, and then also can effectively reduce the lateral dimension of walking beam in suspension type monorail traffic system, while the steering
Frame structure still can guarantee the stability of the safety and seating of suspension train traveling in the case where lateral dimension reduces.
Description of the drawings
Fig. 1 is the vertical view of framework main body in the utility model bogie structure；
Fig. 2 is the front view of framework main body in the utility model bogie structure；
Fig. 3 is the side view of framework main body in the utility model bogie structure；
Fig. 4 is the vertical view of the utility model bogie structure；
Fig. 5 is the front view of the utility model bogie structure；
Fig. 6 is the side view of the utility model bogie structure；
Fig. 7 is the structural schematic diagram of suspension arrangement in the utility model operating system；
Fig. 8 is the structural schematic diagram of roof girder construction in Fig. 7 suspension arrangements；
Fig. 9 is the structural schematic diagram of bolster structure in Fig. 7 suspension arrangements；
Figure 10 is the structural schematic diagram of central towing pin in Fig. 7 suspension arrangements；
Figure 11 is the connection diagram of bogie structure and suspension arrangement and track girder；
Figure 12 is the connection diagram of the utility model bogie structure and suspension arrangement；
Figure 13 is the front view of Figure 12；
Figure 14 is the vertical view of Figure 12.
Specific implementation mode
Technical solutions of the utility model are described further below in conjunction with attached drawing.
As shown in figs. 1 to 6, the bogie structure of the utility model PRT suspension trains, including "-" type framework main body 8 with
And it is fixed on the traveling wheel mounting base 9 in framework main body, 8 center of framework main body is socket type structure 8-1, socket type structure 8-1
The both ends of both ends welding beam structure 8-2, framework main body 8 are equipped with directive wheel mounting base 11 and are mutually perpendicular to framework main body 8
Vertical girder construction 12；The top of vertical girder construction 12 is equipped with steady wheel mounting base 13；Traveling wheel mounting base 9, directive wheel installation
Seat 11 and steady wheel mounting base 13 are symmetrical arranged both with respect to 8 both sides of framework main body；Traveling wheel is installed in traveling wheel mounting base 9
1；Directive wheel 3 is installed in directive wheel mounting base 11, steady wheel 2 is installed in steady wheel mounting base 13；Steady wheel 2, which is located at, to be oriented to
The surface of wheel 3.
Traveling wheel 1 is made of aerated rubber tyre and outer rotor hub motor, and traveling wheel 1 can using outer rotor hub motor
Directly to transfer torque on traveling wheel 1, simultaneously because there is no gear device in traveling wheel 1, can greatly reduce
The volume and noise of traveling wheel 1；Directive wheel 3 and steady wheel 2 are solid tire, and the directive wheel 3 being arranged in pairs is located at framework
Two ends of main body 8, steady wheel 2 are located at the surface of directive wheel 3, and the effect of directive wheel 3 is mainly that traveling wheel 1 plays guiding work
With steady wheel 2 is to play the role of preventing bogie from sidewindering since the lateral span of the framework main body 8 of bogie is small；Traveling wheel 1
Brake disc 7 is installed, using disc braking on the wheel hub of inside；Brake clamp 6, brake clip are installed in traveling wheel mounting base 9
Two brake linings of pincers 6 are located at the side of brake disc 7, and brake clamp 6 realizes system by the frictional force generated with brake disc 7
It is dynamic, when braking, so that two brake linings is pressed on 7 side of brake disc with brake clamp 6, the friction for passing through the two generates brake force.Row
It walks wheel 1 to connect with traveling wheel mounting base 9 by flat key, and is fixed with locking nut in 9 inside of traveling wheel mounting base.
1 outer rotor of traveling wheel of the utility model bogie structure using wheel hub motor as driving device, adopt by outer rotor
It can directly be transferred torque on traveling wheel 1 with wheel hub motor, without installing the devices such as gear additional, considerably reduce traveling wheel 1
Volume, while traveling wheel 1 use small-sized aerated rubber tyre, can not only reduce volume, but also noise can be reduced.This practicality
Novel steering frame structure uses line-styled framework main body 8, due to that can greatly reduce bogie using "-" type framework main body 8
The lateral dimension of structure, while simple in structure, easy access；The framework main body 8 that the utility model uses, which can effectively reduce, to be turned
To the lateral dimension of frame structure.
The utility model bogie structure is fine by stability when track (when the turning) of bending, on the one hand due to
Using wheel hub motor, traveling wheel 1, directive wheel 3 and steady wheel can be reduced by the automatically controlled differential control of four-wheel by curve track
2 abrasion；On the other hand since bogie structure is small, wheelbase is short, to be conducive to still have when it passes through sharp radius curve
There is good stability.
The center of the framework main body 8 of the utility model bogie structure is socket type structure 8-1, socket type structure 8-1 two
It is in "-" type to hold welding beam structure 8-2, framework main body 8；Two ends of 8 beam structure 8-2 of framework main body be welded with
The orthogonal vertical girder construction 12 of framework main body 8, welding steady wheel mounting base 13 in vertical girder construction 12, steady wheel 2 passes through
Bolt is mounted in steady wheel mounting base 13；It is traversed in two ends of 8 beam structure 8-2 of framework main body and is welded with crossbeam
14, directive wheel mounting base 11 is welded on crossbeam 14, directive wheel 3 is mounted on by bolt in directive wheel mounting base 11；In structure
Traveling wheel mounting base 9, U-shaped (such as Fig. 3 side views of traveling wheel mounting base 9 are welded in the middle part of 8 beam structure 8-2 of frame body
Figure), convenient for its installation positioning in framework main body 8, and play the role of certain lift；Traveling wheel 1 and traveling wheel mounting base 9
It is connected by flat key, and is fixed with locking nut 16 in 9 inside of traveling wheel mounting base, prevent 1 transverse movement of traveling wheel；Braking
Disk 7 is bolted on the wheel hub of 1 inside of traveling wheel, and brake clamp 6 is mounted on traveling wheel mounting base 9 by bolt
Top (U-shaped at the top of).
Compared to driving device is big, operational efficiency is low, running noises are big existing for existing suspension type monorail vehicle and
The excessive problem in suspension type monorail stock rail beam cross section, the traveling wheel 1 of the utility model bogie structure is by outer rotor wheel
Hub motor and aerated rubber tyre composition also improve driving using the traveling wheel 1 of the structure while simplifying driving device
Efficiency and reduce operation noise；In addition, the utility model traveling wheel 1 is mounted on 8 both sides of "-" type framework main body, "-" type structure
Frame body 8 has the characteristics that simple in structure, lateral dimension is small；Directive wheel 3 and steady wheel 2 positioned at 8 two ends of framework main body
Guiding and stabilization are played to bogie structure respectively.The utility model bogie structure can be suitable for the city rail of small freight volume
Pipeline transportation system.
As shown in Fig. 7~14, the operating system of the PRT suspension trains of the utility model further includes solid with bogie structure
Surely the suspension arrangement 4 connected, suspension arrangement 4 include roof girder construction 4-1, bolster structure 4-2, spring cushion 4-3 and hang down
Central towing pin 15 in straight embedded bolster structure；15 lower tubular structure (shank 5-1) of central towing pin passes through socket type knot
Structure 8-1,15 top of central towing pin are bolted to connection with socket type structure 8-1, to the center traction of suspension arrangement 4
Pin 15 is fixedly connected with "-" type framework main body 8, and four stabilizer blade 1-2 of 4 roof girder construction 4-1 of the suspension arrangement stretch into suspension row
It is fixedly connected in vehicle 5 and with suspension train 5；Wherein, roof girder construction 4-1 includes four girder construction 1-1 and four stabilizer blade 1-2,
Four girder construction 1-1 enclosings are rectangular, and the girder construction 1-1 that two of which is mutually parallel is equipped with mounting base I1-3, while above-mentioned
It is additionally provided with the Horizontal limiting mechanism 1-4 being oppositely arranged, other two beam being mutually parallel on two girder construction 1-1 being mutually parallel
Drawing pull bar mounting base I1-5 is equipped on structure 1-1；Bolster structure 4-2 includes bolster main body 2-1 and is arranged in bolster master
The holder 2-2 at the both ends body 2-1, mounting base II2-3 is equipped at the stabilizer blade of holder 2-2, and the top of holder 2-2 is equipped with drawing pull bar peace
Seat II2-4 is filled, the vertical sides bolster main body 2-1 two are arranged with transverse elasticity backstop 2-5, the lower sections transverse elasticity backstop 2-5
It is connected with vertical backstop 2-6, bolster main body 2-1 is equipped with centre bore 2-7；End of the central towing pin 15 with square cotter 5-2 is stretched into
It, will by the square cotter footstock below centre bore 2-7 after shank 5-1 is rotated by 90 ° in centre bore 2-7 in centre bore 2-7
Square cotter 5-2 is blocked, and to make shank 5-1 be fixed in centre bore 2-7, realizes consolidating for center towing pin 15 and bolster structure 4-2
Fixed connection；The end face of the Horizontal limiting mechanism 1-4 of roof girder construction 4-1 is against transverse elasticity backstop 2-5；Spring cushion 4-3
One end is mounted on mounting base I1-3, and the other end is mounted on mounting base II2-3, spring damper 4-3 and horizontal direction or perpendicular
Histogram is to all having certain angle, therefore it can be achieved at the same time horizontal direction and vertical damping vibration attenuation；Spring cushion
4-3 is four, and four spring cushion 4-3 are symmetrically distributed in four edges of suspension arrangement 4；Suspension arrangement 4 further includes leading
Be pulled bar 4-4, and one end of drawing pull bar 4-4, which is mounted on drawing pull bar mounting base I1-5, (to be equivalent to and connect with suspension train 5),
The other end is mounted on drawing pull bar mounting base II2-4 and (is equivalent to and is connect with bogie structure), the arrangement side of drawing pull bar 4-4
To consistent with the extending direction of 5 traveling track of suspension train, two drawing pull bar 4-4 it are centrosymmetrically arranged along longitudinal direction, draw
Two ends of pull rod 4-4 are equivalent to one end connection suspension train 5, and one end connects bogie structure, to drawing pull bar 4-4 energy
Enough transmit the tractive force between suspension train car body and bogie.Suspension arrangement 4 can not only realize 5 car body of suspension train and bogie
Linkage function between structure, while can also realize that horizontal between 5 car body of suspension train and bogie structure (is laterally level side
To), the transmission of vertical (longitudinal be suspension train direction of travel), vertical (vertical is vertical direction) three axis force.Tilting spring cushion
4-3 can provide lateral and vertical required elasticity and the damping (can realize cushioning effect) of 5 car body of suspension train simultaneously,
The drawing pull bar 4-4 in suspension arrangement 4 can realize the vertical relative motion between suspension train car body and bogie simultaneously；Lateral bullet
Property backstop 2-5 can limit lateral displacement of 5 car body of suspension train relative to bogie, and vertical backstop 2-6 can limit suspension train 5
Vertical deviation between car body and bogie.
Bogie structure is fixedly connected with the central towing pin 15 of suspension arrangement 4 in the operating system of the utility model, is hanged
The central towing pin 15 of hang device 4 passes through the center cylindrical structure 8-1 of framework main body 8, the rubber lining on central towing pin 15
Pad 5-3 can play certain effectiveness in vibration suppression, and framework main body 8 is bolted to connection with central towing pin 15, to realize
Movement of the two on vertical is consistent；Four stabilizer blade 1-2 of suspension arrangement 4 stretch into the inside of 5 car body of suspension train, then pass through height
Strength bolts are attached the two, and 4 main part of suspension arrangement is located at the lower section of track girder 10, traveling wheel 1,3 and of directive wheel
The wheel rim of steady wheel 2 is contacted with the cross girders of walking inside track girder 10 respectively.The hydraulic damping that suspension arrangement 4 is arranged using skew symmetry
Spring 4-3, hydraulic damping spring 4-3 can not only reduce installation space, while can also effectively inhibit suspension train 5 in operational process
In vibration, improve the dynamic performance of bogie structure.
Claims (9)
1. a kind of bogie structure of PRT suspension trains, it is characterised in that：Including "-" type framework main body and it is fixed on framework
The both ends of traveling wheel mounting base in main body, the framework main body are additionally provided with directive wheel mounting base and mutually hang down with framework main body
Straight vertical girder construction；The top of the vertical girder construction is equipped with steady wheel mounting base；The traveling wheel mounting base, directive wheel peace
Seat and steady wheel mounting base is filled to be symmetrical arranged both with respect to framework main body both sides；Walking is installed in the traveling wheel mounting base
Wheel；Directive wheel is installed in directive wheel mounting base, steady wheel is installed in steady wheel mounting base；The steady wheel is located at directive wheel
Surface.
2. the bogie structure of PRT suspension trains according to claim 1, it is characterised in that：The traveling wheel is by inflating
Rubber tyre and outer rotor hub motor composition.
3. the bogie structure of PRT suspension trains according to claim 1, it is characterised in that：The directive wheel and stabilization
Wheel is solid tire.
4. the bogie structure of PRT suspension trains according to claim 1, it is characterised in that：On the inside of the traveling wheel
Brake disc is installed on wheel hub, brake clamp, two brake lining positions of the brake clamp are installed in the traveling wheel mounting base
In the side of brake disc.
5. the bogie structure of PRT suspension trains according to claim 1, it is characterised in that：The traveling wheel passes through flat
Key is connect with traveling wheel mounting base.
6. a kind of operating system of PRT suspension trains, it is characterised in that：It is fixed including bogie structure and with bogie structure
The suspension arrangement of connection, the suspension arrangement include roof girder construction, bolster structure, spring cushion and are vertically embedded into bolster
Central towing pin in structure；The center towing pin is fixedly connected with the "-" type framework main body of bogie structure.
7. the operating system of PRT suspension trains according to claim 6, it is characterised in that：The roof girder construction includes
Four girder constructions and four stabilizer blades, four girder constructions enclosings are rectangular, and the girder construction that two of which is mutually parallel is equipped with installation
Seat I, while it being additionally provided with the Horizontal limiting mechanism being oppositely arranged in the girder construction that is mutually parallel of above-mentioned two, other two is mutually flat
Drawing pull bar mounting base I is equipped in capable girder construction.
8. the operating system of PRT suspension trains according to claim 7, it is characterised in that：The bolster structure includes shaking
It rests the head on main body and the holder at bolster main body both ends is set, mounting base II, the top of the holder are equipped at the stabilizer blade of the holder
End is equipped with drawing pull bar mounting base II, and the vertical side of the bolster main body two is arranged with transverse elasticity backstop, transverse elasticity
Vertical backstop is connected with below backstop, the bolster main body is equipped with centre bore；During the shank of the center towing pin is fixed on
In heart hole；The end face of the Horizontal limiting mechanism is against transverse elasticity backstop；Described spring cushion one end is mounted on mounting base I
On, the other end is mounted on mounting base II.
9. the operating system of PRT suspension trains according to claim 6, it is characterised in that：The suspension arrangement further includes
One end of drawing pull bar, the drawing pull bar is mounted on drawing pull bar mounting base I, and the other end is mounted on drawing pull bar mounting base
On II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721742064.4U CN207617731U (en) | 2017-12-14 | 2017-12-14 | A kind of bogie structure of PRT suspension trains and the operating system containing the bogie structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721742064.4U CN207617731U (en) | 2017-12-14 | 2017-12-14 | A kind of bogie structure of PRT suspension trains and the operating system containing the bogie structure |
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| CN207617731U true CN207617731U (en) | 2018-07-17 |
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ID=62823909
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878496A (en) * | 2017-12-14 | 2018-04-06 | 江苏添仂智能科技有限公司 | A kind of bogie structure of PRT suspension trains and the runtime containing the bogie structure |
| CN109056431A (en) * | 2018-08-29 | 2018-12-21 | 江西理工大学 | Suspension type permanent magnetism magnetic floating rail traffic mechanical structure |
| CN109532912A (en) * | 2019-01-02 | 2019-03-29 | 中车株洲电力机车有限公司 | A kind of train suspension arrangement and suspension monorail |
| CN111705563A (en) * | 2020-05-20 | 2020-09-25 | 安徽浦进轨道装备有限公司 | Wear-resisting installation component of vehicle track |
| CN111907534A (en) * | 2020-09-07 | 2020-11-10 | 中铁宝桥集团有限公司 | Single track sightseeing vehicle suspension device |
| CN113997929A (en) * | 2021-11-22 | 2022-02-01 | 东风悦享科技有限公司 | Steering control method, system and device for PRT vehicle |
| CN114684203A (en) * | 2020-12-31 | 2022-07-01 | 重庆快道智能交通科技有限公司 | Suspension rail vehicle |
| CN114889662A (en) * | 2022-05-07 | 2022-08-12 | 中铁宝桥集团有限公司 | Unpowered bogie suitable for suspension type monorail engineering vehicle |
| CN117622231A (en) * | 2023-12-01 | 2024-03-01 | 广东京兰空铁发展有限公司 | Bogie and air-railway traffic system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878496A (en) * | 2017-12-14 | 2018-04-06 | 江苏添仂智能科技有限公司 | A kind of bogie structure of PRT suspension trains and the runtime containing the bogie structure |
| CN107878496B (en) * | 2017-12-14 | 2023-10-27 | 江苏添仂智能科技有限公司 | Bogie structure of PRT suspension train and operation system comprising bogie structure |
| CN109056431B (en) * | 2018-08-29 | 2020-12-25 | 江西理工大学 | Suspension type permanent magnetism magnetic levitation track traffic machinery structure |
| CN109056431A (en) * | 2018-08-29 | 2018-12-21 | 江西理工大学 | Suspension type permanent magnetism magnetic floating rail traffic mechanical structure |
| CN109532912A (en) * | 2019-01-02 | 2019-03-29 | 中车株洲电力机车有限公司 | A kind of train suspension arrangement and suspension monorail |
| CN109532912B (en) * | 2019-01-02 | 2020-11-27 | 中车株洲电力机车有限公司 | Train linkage and suspension type monorail train |
| CN111705563A (en) * | 2020-05-20 | 2020-09-25 | 安徽浦进轨道装备有限公司 | Wear-resisting installation component of vehicle track |
| CN111907534A (en) * | 2020-09-07 | 2020-11-10 | 中铁宝桥集团有限公司 | Single track sightseeing vehicle suspension device |
| CN114684203A (en) * | 2020-12-31 | 2022-07-01 | 重庆快道智能交通科技有限公司 | Suspension rail vehicle |
| CN113997929A (en) * | 2021-11-22 | 2022-02-01 | 东风悦享科技有限公司 | Steering control method, system and device for PRT vehicle |
| CN113997929B (en) * | 2021-11-22 | 2023-12-05 | 东风悦享科技有限公司 | Steering control method, system and device for PRT vehicle |
| CN114889662A (en) * | 2022-05-07 | 2022-08-12 | 中铁宝桥集团有限公司 | Unpowered bogie suitable for suspension type monorail engineering vehicle |
| CN117622231A (en) * | 2023-12-01 | 2024-03-01 | 广东京兰空铁发展有限公司 | Bogie and air-railway traffic system |
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