CN107215341A - Built-in suspension formula track girder and the empty iron traffic system of built-in suspension formula - Google Patents
Built-in suspension formula track girder and the empty iron traffic system of built-in suspension formula Download PDFInfo
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- CN107215341A CN107215341A CN201710471691.7A CN201710471691A CN107215341A CN 107215341 A CN107215341 A CN 107215341A CN 201710471691 A CN201710471691 A CN 201710471691A CN 107215341 A CN107215341 A CN 107215341A
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- walking
- built
- suspension formula
- running part
- track girder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/04—Monorail systems
- B61B13/06—Saddle or like balanced type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B3/00—Elevated railway systems with suspended vehicles
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- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses built-in suspension formula track girder and the empty iron traffic system of built-in suspension formula, is related to field of track traffic.The inside of the track girder is travelled for the road wheel of suspension type monorail vehicle both sides, it includes track of walking, walking track includes top plate, two blocks of side plates and two blocks of walking plates for being slided for road wheel, two blocks of side plates are oppositely arranged, the one end of the two ends of top plate respectively with two blocks of side plates is fixedly connected, the one end of the other end of two blocks of side plates respectively with corresponding walking plate is fixedly connected, and is left between the free end of two blocks of walking plates for being used to suspend the breach that the hanger bracket in compartment is passed through in midair；The top surface of two blocks of walking plates is formed with running part, and the top surface of running part is inclined plane, and road wheel is travelled in inclined plane.The present invention is simple in construction, with self- steering and self-stabilization function, efficiently solves the problem of because being influenceed by external force transverse shifting occurs for car body, improves stability and security, reduce cost, reduce noise, protects environment.
Description
Technical field
The present invention relates to field of track traffic, more particularly to built-in suspension formula track girder and with built-in suspension formula track girder
The empty iron traffic system of built-in suspension formula.
Background technology
Ground public transport system has that freight volume is small, pollution is big, it is many and surface road insufficient space natural to take road
Defect.Subway freight volume is big, pollution-free, is also not take up surface road space, but face the finite sum subway cost of the underground space
The limitation of high, economy deficiency and geological conditions etc..Suspended rail traffic, can be effectively using space more than ground, in solution
Certainly there is oneself unique advantage in terms of traffic problems.The mankind have had the history of more than 100 years using suspended rail traffic system,
There are circuit in China, Germany and Japan in operation at present.
By years development up to the present, the walking surface of the walking track of existing built-in suspended rail traffic system is equal
It is level, two groups of road wheels are abreast travelled on two walking surfaces of walking track.Level when being travelled due to road wheel
Walking surface can not produce certain horizontal force to road wheel, therefore, when car body is influenceed larger by crosswind and unbalance loading,
Transverse shifting can occur for car body.For that purpose it is necessary to set directive wheel and steady wheel, influenceed and deflected by external force to solve car body
The problem of.But, the stability force of steady wheel and the guiding force of directive wheel are larger, larger to the active force of track beam sides, so that
The lateral stability of track girder is have impact on, security performance is reduced, meanwhile, cost is not only increased, and because larger is led
To power and stability force, noise, especially high-frequency noise are generated.
The content of the invention
(1) technical problem to be solved
The present invention provides a kind of simple in construction, reduces cost, reduces noise, with self- steering and self-stabilization function, effectively
Solve the built-in suspension formula track girder for the problem of because being influenceed by external force transverse shifting occurs for car body.
The present invention also provides a kind of built-in suspension formula including above-mentioned built-in suspension formula track girder empty iron traffic system.
(2) technical scheme
In order to achieve the above object, the main technical schemes that the present invention is used include：
The present invention provides a kind of built-in suspension formula track girder, and the inside of the track girder is for suspension type monorail vehicle both sides
Road wheel is travelled, including walking track, and the walking track includes top plate, two blocks of side plates and two pieces slided for confession road wheel
Walk plate, two blocks of side plates are oppositely arranged, the one end of the two ends of the top plate respectively with two blocks of side plates is fixedly connected, two pieces of sides
The one end of the other end of plate respectively with corresponding walking plate is fixedly connected, and is left between the free end of two pieces of walkings plate for being used for
The breach that the hanger bracket of suspention suspension type monorail vehicle car is passed through；
The top surface of two pieces of walkings plate is formed with running part, and the top surface of the running part is inclined plane, the row
Wheel traveling is walked in inclined plane.
As the preferred scheme of built-in suspension formula track girder, the top surface of the running part be from away from walking plate free end to
The plane tilted down close to walking plate free end, the sharp folder of 0.1-30 ° of formation between the top surface and walking plate of the running part
Angle.
As the preferred scheme of built-in suspension formula track girder, the top surface of the running part be from close to walking plate free end to
The plane tilted down away from walking plate free end, the sharp folder of 0.1-60 ° of formation between the top surface and walking plate of the running part
Angle.
As the preferred scheme of built-in suspension formula track girder, the running part include formed running part top surface scuff-resistant coating and
Form the load steel structural layer of running part main body.
As the preferred scheme of built-in suspension formula track girder, the running part is integrally formed with walking plate, or the walking
Portion is fixedly connected by connector with walking plate, and sets damping layer between running part and walking plate.
As the preferred scheme of built-in suspension formula track girder, the side plate of the walking track is inclined riser.
The present invention also provides a kind of built-in suspension formula empty iron traffic system, including compartment and the multipair walking being arranged in pairs
Wheel, in addition to the built-in suspension formula track girder as described in any of the above scheme；
Connected between two road wheels of each pair by axletree, the middle part of the axletree is connected by hanger bracket and compartment
Connect.
As the preferred scheme of the empty iron traffic system of built-in suspension formula, the axletree includes the middle shaft part and difference at middle part
Two end shaft parts at shaft part both ends in connection, the end of the end shaft part is connected with corresponding road wheel, and end shaft part is vertical
Set in corresponding road wheel.
As the preferred scheme of the empty iron traffic system of built-in suspension formula, the longitudinal section of the middle shaft part is curved or straight.
As the preferred scheme of the empty iron traffic system of built-in suspension formula, the hanger bracket includes at least one hanger bar.
(3) beneficial effect
The beneficial effects of the invention are as follows：
The top surface of two blocks of walking plates of present invention walking track is provided with running part, and the top surface of running part is inclined flat
Face, road wheel is travelled in inclined plane, therefore, built-in suspension formula track girder disclosed by the invention and with the track girder
Built-in suspension formula sky iron traffic system has advantages below：
1st, above-mentioned inclined plane is simple in construction, with self- steering and self-stabilization function, efficiently solves car body because by external force shadow
The problem of ringing and occur transverse shifting, so as to improve stability and security.
2nd, because above-mentioned inclined plane has self- steering function, guiding force is reduced, the setting of directive wheel can be reduced, not even
Directive wheel is set；Meanwhile, above-mentioned inclined plane also has self-stabilization function, it is possible to reduce the setting of steady wheel, or even is not provided with steady
Fixed wheel, so as to save cost.
3rd, based on being not provided with or set directive wheel and steady wheel less, reduce due to directive wheel and steady wheel guiding force and
The noise that stability force is produced, especially high-frequency noise, protect environment.
Brief description of the drawings
Fig. 1 is the structural representation of the empty iron traffic system of built-in suspension formula of the present invention, wherein, hanger bracket is single lever-type,
Walking surface is lower tilting；
Fig. 2 is the structural representation of the empty iron traffic system of built-in suspension formula of the present invention, wherein, hanger bracket is single lever-type,
Walking surface is upper tilting；
Fig. 3 is the structural representation of the empty iron traffic system of built-in suspension formula of the present invention, wherein, hanger bracket is double rod type,
Walking surface is lower tilting；
Fig. 4 is the structural representation of the empty iron traffic system of built-in suspension formula of the present invention, wherein, hanger bracket is double rod type,
Walking surface is upper tilting；
Fig. 5 is the structural representation of the track girder of the present invention, wherein, walking surface is lower tilting；
Fig. 6 is the structural representation of the track girder of the present invention, wherein, walking surface is upper tilting；
Fig. 7 is the front elevation of the kinetic model of the present invention；
Fig. 8 is the side view of the kinetic model of the present invention；
Fig. 9 be the present invention track girder and hanger bracket installation effect figure, wherein, hanger bracket is double rod type, and walking surface is
Upper tilting, side plate is vertical type；
Figure 10 be the present invention track girder and hanger bracket installation effect figure, wherein, hanger bracket is single lever-type, and walking surface is
Lower tilting, side plate holds together formula in；
Figure 11 be the present invention track girder and hanger bracket installation effect figure, wherein, hanger bracket is double rod type, and walking surface is
Lower tilting, side plate holds together formula in；
Figure 12 be the present invention track girder and hanger bracket installation effect figure, wherein, hanger bracket is single lever-type, and walking surface is
Upper tilting, side plate is to extend out formula；
Figure 13 be the present invention track girder and hanger bracket installation effect figure, wherein, hanger bracket is double rod type, and walking surface is
Upper tilting, side plate is to extend out formula；
Figure 14 be the present invention track girder and hanger bracket installation effect figure, wherein, hanger bracket be another double rod type, walking
Face is upper tilting, and side plate is to extend out formula.
In figure：
1st, compartment；2nd, road wheel；3rd, hanger bracket；4th, axletree；5th, running part；6th, walking plate；
31st, hanger bar；41st, middle shaft part；42nd, shaft part is held.
Embodiment
In order to preferably explain the present invention, in order to understand, below in conjunction with the accompanying drawings, by embodiment, to this hair
It is bright to be described in detail.
As shown in Fig. 1 to Figure 14, the invention discloses a kind of empty iron traffic system of built-in suspension formula, the system includes compartment
1st, built-in suspension formula track girder, the bogie that is arranged in track girder and it is slidably arranged in inside built-in suspension formula track girder
Multipair road wheel 2.In the air, the top in compartment 1 is installed with hanger bracket 3, the top of hanger bracket 3 to built-in suspension formula erection of track beam
Wall built-up is hinged with, another end bearing of wall built-up is provided with the axletree 4 being connected with drive device, the two ends installation pair of axletree 4
Claim two road wheels 2 set.Drive device is electrically connected with the vehicle control device in compartment 1.
Specifically, the built-in suspension formula track girder of the present invention includes walking track, walking track includes top plate, is symmetrical arranged
In two blocks of side plates of the left and right sides and two blocks of walking plates 6.Top plate, two blocks of side plates for being symmetricly set on the left and right sides and two pieces of walkings
Plate 6 is integrally formed by bending, improves walking track overall structural strength and stability.Two blocks of left and right walking plate 6 is used for supplying
The multipair road wheel 2 of suspension type monorail vehicle is slided.The left end of top plate is fixedly connected with the top of left plate, the bottom of left plate
It is fixedly connected with one end of left lateral limp, the right-hand member of top plate is fixedly connected with the top of right plate, the bottom of right plate and right lateral
One end of limp is fixedly connected.Left lateral limp and right lateral limp be between same plane, and both free ends leave for
The breach passed through in the hanger bracket 3 of suspention suspension type monorail vehicle car.
In order to lift the aesthetic of vision, the left plate and right plate of track of walking can be vertical riser (see figure
9), it can be the abducent tilting riser (see Figure 12-14) in top, the tilting riser that can be inwardly drawn in for top
(see Figure 10-11).Certainly, other shapes (such as arc) are also designed to according to the actual requirements.
The top surface of left lateral limp and right lateral limp is respectively formed with running part 5, and running part 5 includes the top surface for forming running part 5
The scuff-resistant coating of (hereinafter referred to as walking surface) and the load steel structural layer for forming running part main body.In this built-in suspension formula monorail track
Actual design and manufacturing process in, scuff-resistant coating can use various materials, as long as abrasionproof effect, such as rubber can be played
Glue, high polymer material or sheet metal etc..Meanwhile, scuff-resistant coating can be adopted and installed in various manners, such as mechanical erection, application or viscous
Patch mode is laid, and is determined with specific reference to actual conditions.Load steel structural layer can bear a number of people of compartment load-carrying or thing
Gross weight after body.
Walking surface is inclined plane, and road wheel 2 is travelled on inclined walking surface.This inclined walking surface has self-conductance
To with self-stabilization function, efficiently solve the problem of because being influenceed by external force transverse shifting occurs for car body, thus improve stabilization
Property and security.Because above-mentioned inclined plane has self- steering function, guiding force is reduced, the setting of directive wheel can be reduced, even
It is not provided with directive wheel；Meanwhile, above-mentioned inclined plane also has self-stabilization function, it is possible to reduce the setting of steady wheel, or even is not provided with
Steady wheel, so as to save cost.Based on being not provided with or set directive wheel and steady wheel less, greatly reduce due to directive wheel and
The noise that the guiding force and stability force of steady wheel are produced, especially high-frequency noise, protect environment.
Specifically, inclined walking surface can be to be dipped down from away from the walking free end of plate 6 to close to walking plate 6 free end
Oblique plane (walking surface for hereinafter referred to as descending tilting), can also be from close to walking the free end of plate 6 to away from walking plate 6 from
The plane (walking surface of hereinafter referred to as upper tilting) tilted down by end.In order to ensure road wheel 2 on inclined walking surface
Trouble-free operation, the angle of inclination of the walking surface of the walking surface of upper tilting and lower tilting is according to vehicle sound load and track
Girder construction size, is determined through kinetic model and simulation calculation, and 0.1- is formed between the walking surface and walking plate 6 of lower tilting
30 ° of sharp angle (see the angle α in Fig. 5).The sharp angle of 0.1-60 ° of formation between the walking surface and walking plate 6 of upper tilting
(see the angle α in Fig. 6).The consideration of the factors such as speed, cost and noise based on vehicle, the walking of the preferably upper tilting of walking surface
The sharp angle of 5-20 ° of formation between face, and the walking surface and walking plate 6 of upper tilting, stability and security are also relatively higher.
The kinetic parameter of vehicle, bogie and above-mentioned track girder in the present invention is by the kinetic model set up and emulation
Calculating is determined that the front elevation of model is Fig. 7, and the side view of model is Fig. 8.K0, C0 are respectively road wheel 2 and walking surface connects
Touch rigidity and contact damping, K1, C1 are respectively single stage suspension rigidity and damping, K2, C2 are respectively secondary suspension rigidity and damping,
K3, C3 are suspension stiffness and damping equivalent to three.Wherein, using two it is or three is suspension, effect of vibration and noise reduction is preferable.
Running part 5 can be integrally formed with walking plate 6, improve the stability of total.Certainly, running part 5 can be with
It is separate structure with walking plate 6, changes at any time, improve the service life of track girder.Running part 5 by connector with it is corresponding
Walking plate 6 be fixedly connected, common stress.Damping layer is provided between running part and corresponding walking plate 6, one layer is preferably brushed
Damping slurry, can keep good damping capacity.
Two end shaft parts in the left and right ends portion of shaft part 41 during axletree 4 includes the middle shaft part 41 at middle part and connected respectively
42.Middle shaft part 41 can be segmental arc, or straight section (see Fig. 7 and Fig. 8), and other shapes can also be designed as needed
Shape.The end end of shaft part 42 of left end and the road wheel 2 of left end are connected, and left end end shaft part 42 perpendicular to left end road wheel 2
Set.The end end of shaft part 42 of right-hand member and the road wheel 2 of right-hand member are connected, and right-hand member end shaft part 42 perpendicular to right-hand member road wheel
2 are set.That is, when being designed to the walking surface of upper tilting, whole axletree 4 is in the class arc being bent upwards, with water
Flat axletree is compared, and this axletree 4 improves stress, can bear less shearing force, can also bear strong pressure
Power.When being designed to the walking surface of lower tilting, whole axletree 4 is in reclinate class arc, the axletree phase with level
Than this axletree 4 improves stress, can bear less shearing force, can also bear strong pulling force.
Hanger bracket 3 includes at least one hanger bar 31, and hanger bar 31 can be a vertical pole, can be cross bar and vertical pole
Combination, or multiple tilting bars, can also be the combination of tilting bar and cross bar and/or vertical pole.With direct with the top of compartment 1
For the quantity of hanger bar 31 of connection, hanger bracket 3 can be single lever-type (see Fig. 1 and Fig. 2), double rod type (see Fig. 3 and Fig. 4) and many
Any of rod-type.
In the present invention, the empty iron traffic system of whole built-in suspension formula can only be set by 1 section compartment according to passenger flow size
Individually organized into groups, 2 sections or 2 compartments for saving the above can also be set to be organized into groups.
It is to be appreciated that the description carried out above to the specific embodiment of the present invention is simply to illustrate that the skill of the present invention
Art route and feature, its object is to allow those skilled in the art to understand present disclosure and implement according to this, but
The present invention is not limited to above-mentioned particular implementation.Every various change made within the scope of the claims is repaiied
Decorations, should all cover within the scope of the present invention.
Claims (10)
1. a kind of built-in suspension formula track girder, the inside of the track girder supplies the road wheel (2) of suspension type monorail vehicle both sides OK
Sail, it is characterised in that including walking track, the walking track includes top plate, two blocks of side plates and for being slided for road wheel (2)
Two pieces of walking plates (6), two blocks of side plates are oppositely arranged, and the two ends of the top plate are fixed with one end of two blocks of side plates respectively to be connected
Connect, the other end of two blocks of side plates is fixedly connected with corresponding one end for walking plate (6) respectively, the freedom of two pieces of walking plates (6)
Left between end for being used to suspend the breach that the hanger bracket (3) of suspension type monorail vehicle car is passed through in midair；
The top surface of two pieces of walking plates (6) is formed with running part (5), and the top surface of the running part (5) is inclined plane, institute
Road wheel (2) traveling is stated in inclined plane.
2. built-in suspension formula track girder according to claim 1, it is characterised in that：The top surface of the running part (5) be from
Arrived away from walking plate (6) free end close to the plane that tilts down of walking plate (6) free end, the top surface of the running part (5) and
The sharp angle of 0.1-30 ° of formation between walking plate (6).
3. built-in suspension formula track girder according to claim 1, it is characterised in that：The top surface of the running part (5) be from
Arrived close to walking plate (6) free end away from the plane that tilts down of walking plate (6) free end, the top surface of the running part (5) and
The sharp angle of 0.1-60 ° of formation between walking plate (6).
4. the built-in suspension formula track girder according to claim 1-3 any one, it is characterised in that：The running part (5)
Including forming the scuff-resistant coating of running part top surface and forming the load steel structural layer of running part main body.
5. built-in suspension formula track girder according to claim 4, it is characterised in that：The running part (5) and walking plate (6)
It is integrally formed, or the running part (5) is fixedly connected by connector with walking plate (6), and running part (5) and walking plate (6)
Between damping layer is set.
6. built-in suspension formula track girder according to claim 5, it is characterised in that：The side plate of the walking track is inclination
Riser.
7. a kind of empty iron traffic system of built-in suspension formula, including compartment (1) and the multipair road wheel (2) that is arranged in pairs, its feature
It is：Also include the built-in suspension formula track girder as described in any one of claim 1 to 6；
Connected between two road wheels (2) of each pair by axletree (4), the middle part of the axletree (4) passes through hanger bracket (3)
It is connected with compartment (1).
8. the empty iron traffic system of built-in suspension formula according to claim 7, it is characterised in that：The axletree (4) includes
The middle shaft part (41) at middle part and two of shaft part (41) both ends end shaft parts (42), the end of the end shaft part (42) in connecting respectively
End is connected with corresponding road wheel (2), and end shaft part (42) is set perpendicular to corresponding road wheel (2).
9. the empty iron traffic system of built-in suspension formula according to claim 8, it is characterised in that：The middle shaft part (41) it is vertical
Section is curved or straight.
10. the empty iron traffic system of built-in suspension formula according to claim 7, it is characterised in that：The hanger bracket (3) includes
At least one hanger bar (31).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471691.7A CN107215341A (en) | 2017-06-20 | 2017-06-20 | Built-in suspension formula track girder and the empty iron traffic system of built-in suspension formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471691.7A CN107215341A (en) | 2017-06-20 | 2017-06-20 | Built-in suspension formula track girder and the empty iron traffic system of built-in suspension formula |
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Cited By (12)
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| CN107650922A (en) * | 2017-10-30 | 2018-02-02 | 中唐空铁集团有限公司 | A kind of monorail train power suspension member |
| CN107792110A (en) * | 2017-11-21 | 2018-03-13 | 中车长江车辆有限公司 | A kind of bogie and stream carrier vehicle |
| CN108001463A (en) * | 2017-11-29 | 2018-05-08 | 中建空列（北京）科技有限公司 | Suspension apparatus |
| CN108045380A (en) * | 2018-01-23 | 2018-05-18 | 西南交通大学 | A kind of side hanging sky rail train bogie |
| CN108263397A (en) * | 2018-02-27 | 2018-07-10 | 中唐空铁集团有限公司 | For the driving mechanism of empty iron train |
| CN108301262A (en) * | 2018-04-04 | 2018-07-20 | 中唐空铁集团有限公司 | A kind of sky iron running gear |
| CN108301264A (en) * | 2018-04-04 | 2018-07-20 | 中唐空铁集团有限公司 | The suspender of adjustable rail beam gradient and the rail system for using the suspender |
| CN108382405A (en) * | 2018-04-04 | 2018-08-10 | 中唐空铁集团有限公司 | Empty iron running gear with damping property |
| CN108621857A (en) * | 2018-04-20 | 2018-10-09 | 西南交通大学 | Suspension type maglev vehicle and rail system |
| CN110497924A (en) * | 2019-08-21 | 2019-11-26 | 中建空列（北京）工程设计研究院有限公司 | A kind of empty rail pipeline transportation system for tunnel |
| 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 |
| CN111926640A (en) * | 2020-08-14 | 2020-11-13 | 北京中建空列集团有限公司 | Movable suspension type air train track maintenance system |
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Cited By (19)
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| CN107650922A (en) * | 2017-10-30 | 2018-02-02 | 中唐空铁集团有限公司 | A kind of monorail train power suspension member |
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| CN108045380B (en) * | 2018-01-23 | 2019-04-12 | 西南交通大学 | A kind of side hanging sky rail train bogie |
| CN108045380A (en) * | 2018-01-23 | 2018-05-18 | 西南交通大学 | A kind of side hanging sky rail train bogie |
| CN108263397A (en) * | 2018-02-27 | 2018-07-10 | 中唐空铁集团有限公司 | For the driving mechanism of empty iron train |
| CN108263397B (en) * | 2018-02-27 | 2024-02-06 | 中唐空铁集团有限公司 | Driving mechanism for air train |
| CN108301262A (en) * | 2018-04-04 | 2018-07-20 | 中唐空铁集团有限公司 | A kind of sky iron running gear |
| CN108301264A (en) * | 2018-04-04 | 2018-07-20 | 中唐空铁集团有限公司 | The suspender of adjustable rail beam gradient and the rail system for using the suspender |
| CN108382405A (en) * | 2018-04-04 | 2018-08-10 | 中唐空铁集团有限公司 | Empty iron running gear with damping property |
| CN108382405B (en) * | 2018-04-04 | 2024-03-29 | 中唐空铁集团有限公司 | Empty iron traveling system with vibration damping performance |
| CN108301262B (en) * | 2018-04-04 | 2024-02-06 | 中唐空铁集团有限公司 | Empty iron traveling system |
| CN108301264B (en) * | 2018-04-04 | 2024-02-06 | 中唐空铁集团有限公司 | Suspension piece capable of adjusting inclination of track beam and track system adopting suspension piece |
| CN108621857A (en) * | 2018-04-20 | 2018-10-09 | 西南交通大学 | Suspension type maglev vehicle and rail system |
| CN108621857B (en) * | 2018-04-20 | 2023-06-23 | 西南交通大学 | Suspension type magnetic levitation vehicle and track system |
| CN110497924A (en) * | 2019-08-21 | 2019-11-26 | 中建空列（北京）工程设计研究院有限公司 | A kind of empty rail pipeline transportation system for tunnel |
| 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 |
| CN111926640A (en) * | 2020-08-14 | 2020-11-13 | 北京中建空列集团有限公司 | Movable suspension type air train track maintenance system |
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