CN208834836U - Linear eddy-current brake electromagnet for rail vehicle - Google Patents
Linear eddy-current brake electromagnet for rail vehicle Download PDFInfo
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- CN208834836U CN208834836U CN201821880988.5U CN201821880988U CN208834836U CN 208834836 U CN208834836 U CN 208834836U CN 201821880988 U CN201821880988 U CN 201821880988U CN 208834836 U CN208834836 U CN 208834836U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000004804 winding Methods 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims description 9
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- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 2
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- 238000007598 dipping method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
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- 230000006698 induction Effects 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 3
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- 239000004922 lacquer Substances 0.000 description 2
- 208000020442 loss of weight Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 239000004677 Nylon Substances 0.000 description 1
- 229920006503 PA66-GF25 Polymers 0.000 description 1
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- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The utility model provides a kind of linear eddy-current brake electromagnet for rail vehicle, comprising: magnetic yoke and multiple magnetic poles connecting with magnetic yoke；Each magnetic pole includes iron core, winding coil, two binding posts and connecting cable；The longitudinal section of magnetic yoke is symmetrical stepped cross section, and the cross section of magnetic yoke is i shaped cross section；Winding coil is wrapped in the outside of iron core, and the access location of winding coil and outgoing line position are equipped with binding post；The lower wing plate of i shaped cross section is equipped with multiple first through hole, and connecting cable is fixed between the binding post of first through hole, for connecting each magnetic pole.The utility model promotes the magnetic yoke deformation of the structural strength and rigidity, reduction electromagnet of linear eddy-current brake electromagnet while guaranteeing brake force, and reduces self weight, improves safety and reliability, adapt to bullet train linear eddy-current brake applies working condition.
Description
Technical field
The utility model relates to rail vehicle braking technical fields, and in particular, to a kind of for the linear of rail vehicle
Eddy-current brake electromagnet.
Background technique
Braking technology is one of key technology of bullet train, since high-speed train braking energy is huge, is being provided
Braking distance in realize secure parking and slow down control have certain difficulty.Bullet train generallys use a variety of systems in the world
The composite braking system that flowing mode matches, main mode of braking include regenerative braking, resistive braking, friction catch, vortex system
Dynamic, magnetic rail braking and aerodynamic braking etc..China's EMU uses regenerative braking+friction catch (disc braking) mode, mesh
Preceding this is also in the world using most high-speed train braking modes.Both modes will be sent out by the adhesion between wheel track
Wave braking action, but under the severe weather conditions such as rain, snow, wheel track sticks together state variation, influence the performance of brake force, braking away from
From being difficult to ensure；With the raising of train speed, rail adhesion coefficient can also be gradually decreased, and lead to high-velocity section brake force not
Foot, to have to increase braking distance, safety and conevying efficiency can all be reduced.
Linear eddy-current brake is a kind of contactless electromagnetic braking mode, is sticked together independent of wheel track, high-velocity section can
Biggish brake force is played, can be not only used for emergency braking, and can be used for service braking, can effectively shorten braking distance, improves row
Vehicle safety, and there is outstanding advantages of no mechanical wear, noiseless, odorlessness, controllable brake force, it can also reduce mechanical system
Dynamic abrasion, performance driving economy is good, especially suitable for high-speed train braking system.
The basic principle of linear eddy-current brake is that braking is mounted on rail vehicle truck and is located at bar magnet
Right above rail, the pole N, S of magnet is alternately arranged, and magnetic pole bottom surface and rail surface keep certain working gas gap, and rail is made
For magnetic induction body.Using the relative motion of magnet and magnetic induction body, current vortex (being referred to as vortexed) is induced in rail, by being vortexed
The main field that the magnetic field of generation and magnet generate interacts and main field is made to generate distortion, and the magnetic line of force deflects, and generation is cut
To component (i.e. brake force), to make train deceleration, braking energy is converted into the eddy-current loss of rail.Linear eddy-current brake device
Generated brake force acts directly on bogie, is not sticked together limitation by wheel track, therefore have significant system in high-velocity section
Dynamic effect.
Linear eddy-current brake device is mainly passed by linear eddy-current brake electromagnet, support component, suspension unit and brake force
The components such as unit composition is passed, wherein linear eddy-current brake electromagnet is the core component of linear eddy-current brake device, has whirlpool
Stream braking electromagnetic field is established and the function of overall structure carrying, directly affects eddy-current brake performance and overall structure safety.
Existing linear eddy-current brake electromagnet self weight is larger, increases bogie burden；Due to bogie installation space
Limitation, the vertical size of electromagnet is smaller, causes the strength and stiffness of electromagnet limited.When linear eddy-current brake electromagnet is in work
When making state, biggish hang down occurs for the magnetic yoke that will lead to electromagnet under the multiple action of self weight, electromagnetic attraction and vibratory impulse
To deflection deformation, it be easy to cause that eddy-current brake power is unstable, even magnetic pole such as collides with rail and be damaged at the harm.
Utility model content
The main purpose of the utility model embodiment is to provide a kind of linear eddy-current brake electromagnetism for rail vehicle
Iron promotes the structural strength of linear eddy-current brake electromagnet guarantee brake force while and rigidity, reduces electro-magnet magnetic yoke
Deformation, and self weight is reduced, safety and reliability is improved, adapt to bullet train linear eddy-current brake applies working condition.
To achieve the goals above, the utility model embodiment provides a kind of linear eddy-current brake electricity for rail vehicle
Magnet, comprising: magnetic yoke and multiple magnetic poles being connect with magnetic yoke；Each magnetic pole include iron core, winding coil, two binding posts and
Connecting cable；
The longitudinal section of magnetic yoke is symmetrical stepped cross section, and the cross section of magnetic yoke is i shaped cross section；
Winding coil is wrapped in the outside of iron core, and the access location of winding coil and outgoing line position are equipped with binding post；
The lower wing plate of i shaped cross section is equipped with multiple first through hole, and connecting cable is fixed on the binding post through first through hole
Between, for connecting each magnetic pole.
It is slope on the inside of the inside of the upper flange of i shaped cross section and lower wing plate in a kind of wherein embodiment.
In a kind of wherein embodiment, the thickness of upper flange is less than the thickness of lower wing plate.
In a kind of wherein embodiment, further includes: multiple screws；
Magnetic yoke is equipped with the second through-hole that is multiple while running through upper flange and lower wing plate, and the top surface of each iron core is equipped with and the
The one-to-one threaded hole of two through-holes；Screw is through the second through-hole and threaded hole corresponding with second through-hole to connect magnetic yoke
With multiple magnetic poles.
In a kind of wherein embodiment, further includes: the end plate being connect respectively with the both ends of magnetic yoke, for protecting magnetic pole.
In a kind of wherein embodiment, insulating layer is provided between winding coil and iron core.
In a kind of wherein embodiment, further includes: shell, shell include square tube and a bottom plate, winding coil and iron core
It is respectively positioned in shell；Wherein, bottom plate is equipped with Kong Yiling iron core identical with the cross section size of iron core and is exposed by the hole.
In a kind of wherein embodiment, further includes:
Resin, resin are filled between the top surface of iron core and winding coil, and are filled between shell and winding coil.
In a kind of wherein embodiment, further includes: protective case；
Protective case is set to the outside of binding post.
In a kind of wherein embodiment, the bottom surface of iron core is polygon facet or cambered surface.
The linear eddy-current brake electromagnet for rail vehicle of the utility model embodiment includes: magnetic yoke and multiple and magnetic
The magnetic pole of yoke connection；Each magnetic pole includes iron core, winding coil, two binding posts and connecting cable；The longitudinal section of magnetic yoke is
Symmetrical stepped cross section, the cross section of magnetic yoke are i shaped cross section；Winding coil is wrapped in the outside of iron core, winding coil
Access location and outgoing line position are equipped with binding post；The lower wing plate of the i shaped cross section of magnetic yoke is equipped with multiple first through hole, connection
Cable is fixed between the binding post of first through hole, for connecting each magnetic pole.The utility model is guaranteeing brake force
The magnetic yoke deformation of the structural strength and rigidity, reduction electromagnet of linear eddy-current brake electromagnet is promoted simultaneously, and reduces self weight, is mentioned
High security and reliability, adapt to bullet train linear eddy-current brake applies working condition.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural representation in an embodiment of the present invention for the linear eddy-current brake electromagnet of rail vehicle
Figure；
Fig. 2 is the front view of magnetic yoke in an embodiment of the present invention；
Fig. 3 be in an embodiment of the present invention magnetic yoke shown in Fig. 2 along the diagrammatic cross-section of hatching A-A；
Fig. 4 is the schematic diagram of the section structure of magnetic pole in an embodiment of the present invention；
Fig. 5 is the side view for being located at the magnetic pole above rail in an embodiment of the present invention.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Self weight in view of current existing linear eddy-current brake electromagnet is larger；The limited strength of electromagnet, electromagnet
Biggish vertical deflection deformation can occur in the operating condition for magnetic yoke, be easy to cause failure to occur and influence service performance, this reality
A kind of linear eddy-current brake electromagnet for rail vehicle, increase line while guaranteeing brake force are provided with new embodiment
Property eddy-current brake electromagnet structural strength and rigidity, the deformation for reducing electro-magnet magnetic yoke, and reduce self weight, improve safety with
Reliability, adapt to bullet train linear eddy-current brake applies working condition.The utility model is carried out below in conjunction with attached drawing detailed
It describes in detail bright.
Fig. 1 is the structural representation in an embodiment of the present invention for the linear eddy-current brake electromagnet of rail vehicle
Figure.Fig. 2 is the front view of magnetic yoke in an embodiment of the present invention.Fig. 3 is magnetic shown in Fig. 2 in an embodiment of the present invention
Diagrammatic cross-section of the yoke along hatching A-A.Fig. 4 is the schematic diagram of the section structure of magnetic pole in an embodiment of the present invention.Such as Fig. 1
To shown in Fig. 4, the linear eddy-current brake electromagnet for rail vehicle includes:
Magnetic yoke 2 and multiple magnetic poles 4 being connect with magnetic yoke 2；Magnetic pole 4 is the pole N or the pole S, and the pole N and the pole S are arranged alternately and the pole N
Quantity is equal with the quantity of the pole S；Extremely a pair of of magnetic pole of the adjacent pole N and S is connected with 4 pairs of magnetic poles 4 in the magnetic yoke 2 in Fig. 1, but
The different form of other number of magnetic pole pairs (such as 3~6 pairs) can also be used according to the design needs.Each magnetic pole 4 include iron core 12,
9, two binding posts 6 of winding coil and connecting cable (being not shown in Fig. 1 to Fig. 4).
The longitudinal section of magnetic yoke 2 is symmetrical stepped cross section, and the cross section of magnetic yoke 2 is i shaped cross section；
Wherein, the main function of magnetic yoke 2 includes conducting magnetic circuit and undertakes two aspects of load (predominantly vertical load), because
This magnetic yoke 2 should have enough magnetic conductivities, magnetic conduction sectional area, structural strength and rigidity.The magnetic yoke 2 of the utility model embodiment is adopted
The structural shape combined with structural I-beam and ladder-type structure has enough effective cross sections product, will not influence or limit
Magnetic flux processed can be enhanced structural strength and reduce weight, takes into account magnetic conduction and Structural strength calls.
Winding coil 9 is wrapped in the outside of iron core 12, and the access location of winding coil 9 and outgoing line position are equipped with binding post
6；Wherein, binding post 6 can be welded with winding coil 9.
The lower wing plate 15 of i shaped cross section is equipped with multiple first through hole, and connecting cable is fixed on the wiring through first through hole
Between column 6, for connecting each magnetic pole 4, it is connected in series between each magnetic pole 4 by binding post 6 and connecting cable or parallel connection connects
It connects.
In one embodiment, as shown in figure 3, the inside of the upper flange 14 of i shaped cross section and the inside of lower wing plate 15 are oblique
Slope, the thickness of upper flange 14 are less than the thickness of lower wing plate 15, can effectively promote electromagnet vertical structure rigidity, guarantee eddy-current brake
Work schedule is taken offence the uniformity of gap, is reduced magnetic pole and is collided with the risk of rail, safety of structure and braking conducive to brake apparatus
The stability that performance plays.
In one embodiment, as shown in Figures 1 to 4, linear eddy-current brake electromagnet further include: multiple screws 3；
Magnetic yoke 2 is equipped with the second through-hole that is multiple while running through upper flange 14 and lower wing plate 15, and the top surface of each iron core 12 is equal
Equipped with the one-to-one threaded hole of the second through-hole；Screw 3 runs through the second through-hole and threaded hole corresponding with second through-hole
To connect magnetic yoke 2 and multiple magnetic poles 4.Each magnetic pole 4 is individually connect with magnetic yoke using screw 3, easy for installation, readily replaceable.
In one embodiment, as shown in Figure 1, linear eddy-current brake electromagnet further include: connect respectively with the both ends of magnetic yoke 2
End plate 1, for protecting magnetic pole 4.Wherein it is possible to by multiple screws 3 through end plate 1 and magnetic yoke 2 by end plate 1 and 2 spiral shell of magnetic yoke
It connects.
In one embodiment, as shown in figure 4, being provided with insulating layer 8 between winding coil 9 and iron core 12.Wherein, insulating layer 8
It can be insulating paper or other insulating materials.
In one embodiment, as shown in figure 4, linear eddy-current brake electromagnet further include: shell, shell include square tube 10 and one
A bottom plate 11, winding coil 9 and iron core 12 are respectively positioned in shell；Wherein, bottom plate 11 is equipped with the cross section size phase with iron core 12
Same Kong Yiling iron core 12 is exposed by the hole.The shape in the hole on bottom plate 11 can be round rectangle.
Shell can use engineering plastics or other lightweights, insulation and the exterior protection every the material of magnetic as magnetic pole 4, both
Ability is struck with enough anti-foreign matters, and is conducive to loss of weight and machine-shaping.Wherein, engineering plastics can be increased using glass fibre
Strong nylon (such as PA66-GF25) has the characteristics that intensity height, good insulating and non-magnetic, it is ensured that the anti-foreign matter of magnetic pole 4 is hit
Ability and insulation effect are beaten, and magnetic circuit will not be interfered.
In one embodiment, winding coil 9 is the coil by vacuum paint dipping.As shown in figure 4, linear eddy-current brake electromagnet
Further include: resin 5, resin are filled between the top surface of iron core 12 and winding coil 9, and are filled in shell and winding coil 9
Between.By to coil windings 9 carry out vacuum paint dipping and fire resistant resin it is filling, improve the insulation pressure resistance water of coil windings 9
Flat and waterproof and dustproof grade.
In one embodiment, as shown in figure 4, linear eddy-current brake electromagnet further include: protective case 7；Protective case 7 is set to wiring
The outside of column 6, for protecting binding post 6.
Fig. 5 is the side view for being located at the magnetic pole above rail in an embodiment of the present invention.As shown in figure 5, iron core 12
Bottom surface be polygon facet or cambered surface, to match with the rail head section outline shape of rail 13, guarantee working gas gap 16
Magnetic flux leakage can be effectively reduced in consistency, is conducive to promote braking ability.
The working principle of the utility model embodiment is as follows:
Linear eddy-current brake electromagnet for rail vehicle is mounted on bogie and between wheel, rail 13
The magnetic pole 4 of surface, electromagnet is alternately arranged by the pole N, the pole S.As shown in figure 5, the bottom surface (i.e. the bottom surface of iron core 12) of magnetic pole 4 is
Polygon facet or arcwall face, and certain working gas gap 16 is kept with the top surface of rail 13, it regard rail 13 as magnetic induction body.Benefit
With the relative motion of magnet and magnetic induction body, current vortex is induced in rail 13, generates magnet by the magnetic field that vortex generates
Main field interact and main field made to generate distortion, the magnetic line of force deflects, generate tangential component (i.e. brake force), thus
Make train deceleration, braking energy is converted into the eddy-current loss of rail.
In conclusion the linear eddy-current brake electromagnet for rail vehicle of the utility model embodiment includes: magnetic yoke
With multiple magnetic poles being connect with magnetic yoke；Each magnetic pole includes iron core, winding coil, two binding posts and connecting cable；Magnetic yoke
Longitudinal section be symmetrical stepped cross section, the cross section of magnetic yoke is i shaped cross section；Winding coil is wrapped in the outside of iron core,
The access location of winding coil and outgoing line position are equipped with binding post；The lower wing plate of i shaped cross section is equipped with multiple first through hole,
Connecting cable is fixed between the binding post of first through hole, for connecting each magnetic pole；The shell of magnetic pole uses engineering plastic
Material is protected, and winding coil overall vacuum dipping lacquer, resin are filling.The utility model can increase line while guaranteeing brake force
Property eddy-current brake electromagnet structural strength and rigidity, the magnetic yoke deformation for reducing electromagnet, and reduce self weight, reinforced insulation and prevent
Protect performance.Linear eddy-current brake electromagnet described in the utility model for rail vehicle can be used as component and be applied to linearly
In eddy current braking device, safety and reliability is improved, adapt to bullet train linear eddy-current brake applies working condition.
Linear eddy-current brake electromagnet provided by the embodiment of the utility model for rail vehicle has below beneficial to effect
Fruit:
The structure shape that there are the magnetic yoke of linear eddy-current brake electromagnet structural I-beam and staged domes to combine
Formula, and ramp structure is used on the inside of the upper and lower wing plate of I-beam cross section, electromagnet vertical structure rigidity can be effectively promoted, together
When reduce self weight, guarantee that eddy-current brake work schedule is taken offence the uniformity of gap, reduce magnetic pole and collide with the risk of rail, be conducive to braking
The stability that the safety of structure and braking ability of device play.Magnetic yoke with enough effective cross sections product, will not influence or
Limiting magnetic flux.Each magnetic pole is individually connect with magnetic yoke using bolt, easy for installation, readily replaceable.The mandrel bottom of magnetic pole adds
Work can effectively reduce magnetic flux leakage at the arc or polygon that match with rail head of rail outline shape, be conducive to promote braking
Energy.The shell of magnetic pole is protected using modified engineered plastic, injection molding, and not only there is enough anti-foreign matters to strike ability, but also
Conducive to loss of weight and machine-shaping.The coil windings of the magnetic pole technique filling using overall vacuum dipping lacquer and fire resistant resin, protection
Effect is reliable, improves the resistance to voltage levels of insulation and temperature classification.Therefore, the line for rail vehicle of the utility model embodiment
Property eddy-current brake electromagnet there are the spies such as structural strength is high, magnetic pole protection effect is reliable, own wt is light and processing technology is simple
Point can be used as component and be conveniently mounted in linear eddy-current brake device, improve safety and reliability, adapt to bullet train
Linear eddy-current brake engineering uses operating condition.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects
Step is described in detail, it should be understood that being not used to limit this foregoing is merely specific embodiment of the utility model
The protection scope of utility model, within the spirit and principle of the utility model, any modification for being made, changes equivalent replacement
Into etc., it should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of linear eddy-current brake electromagnet for rail vehicle characterized by comprising magnetic yoke and the multiple and magnetic
The magnetic pole of yoke connection；Each magnetic pole includes iron core, winding coil, two binding posts and connecting cable；
The longitudinal section of the magnetic yoke is symmetrical stepped cross section, and the cross section of the magnetic yoke is i shaped cross section；
The winding coil is wrapped in the outside of the iron core, and the access location of the winding coil and outgoing line position, which are equipped with, to be connect
Terminal；
The lower wing plate of the i shaped cross section is equipped with multiple first through hole, and the connecting cable is fixed on through the first through hole
Binding post between, for connecting each magnetic pole.
2. the linear eddy-current brake electromagnet according to claim 1 for rail vehicle, which is characterized in that
It is slope on the inside of the inside of the upper flange of the i shaped cross section and lower wing plate.
3. the linear eddy-current brake electromagnet according to claim 2 for rail vehicle, which is characterized in that
The thickness of the upper flange is less than the thickness of the lower wing plate.
4. the linear eddy-current brake electromagnet according to claim 2 for rail vehicle, which is characterized in that further include:
Multiple screws；
The magnetic yoke is equipped with the second through-hole that is multiple while running through the upper flange and the lower wing plate, and the top surface of each iron core is equal
Equipped with the one-to-one threaded hole of the second through-hole；The screw through second through-hole and with second through-hole pair
The threaded hole answered is to connect the magnetic yoke and the multiple magnetic pole.
5. the linear eddy-current brake electromagnet according to claim 1 for rail vehicle, which is characterized in that further include:
The end plate being connect respectively with the both ends of the magnetic yoke, for protecting the magnetic pole.
6. the linear eddy-current brake electromagnet according to claim 1 for rail vehicle, which is characterized in that the winding
Insulating layer is provided between coil and the iron core.
7. the linear eddy-current brake electromagnet according to claim 1 for rail vehicle, which is characterized in that further include:
Shell, the shell include square tube and a bottom plate, and the winding coil and the iron core are respectively positioned in the shell；Wherein,
The bottom plate is equipped with iron core described in Kong Yiling identical with the cross section size of the iron core and is exposed by the hole.
8. the linear eddy-current brake electromagnet according to claim 7 for rail vehicle, which is characterized in that further include:
Resin, the resin are filled between the top surface of the iron core and the winding coil, and be filled in the shell with
Between the winding coil.
9. the linear eddy-current brake electromagnet according to claim 1 for rail vehicle, which is characterized in that further include:
Protective case；
The protective case is set to the outside of the binding post.
10. the linear eddy-current brake electromagnet according to claim 1 for rail vehicle, which is characterized in that the iron
The bottom surface of core is polygon facet or cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821880988.5U CN208834836U (en) | 2018-11-15 | 2018-11-15 | Linear eddy-current brake electromagnet for rail vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821880988.5U CN208834836U (en) | 2018-11-15 | 2018-11-15 | Linear eddy-current brake electromagnet for rail vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN208834836U true CN208834836U (en) | 2019-05-07 |
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| CN201821880988.5U Active CN208834836U (en) | 2018-11-15 | 2018-11-15 | Linear eddy-current brake electromagnet for rail vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109300649A (en) * | 2018-11-15 | 2019-02-01 | 中国铁路总公司 | Linear eddy-current brake electromagnet for rail vehicle |
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2018
- 2018-11-15 CN CN201821880988.5U patent/CN208834836U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109300649A (en) * | 2018-11-15 | 2019-02-01 | 中国铁路总公司 | Linear eddy-current brake electromagnet for rail vehicle |
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