CN112519590B - Magnetic-levitation train and vehicle grounding system thereof - Google Patents
Magnetic-levitation train and vehicle grounding system thereof Download PDFInfo
- Publication number
- CN112519590B CN112519590B CN202011398550.5A CN202011398550A CN112519590B CN 112519590 B CN112519590 B CN 112519590B CN 202011398550 A CN202011398550 A CN 202011398550A CN 112519590 B CN112519590 B CN 112519590B
- Authority
- CN
- China
- Prior art keywords
- vehicle
- grounding
- train
- bogie
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005339 levitation Methods 0.000 title claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000003993 interaction Effects 0.000 abstract description 3
- 239000000725 suspension Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a maglev train and a vehicle grounding system thereof.A vehicle-mounted electrical equipment shell of the maglev train is electrically connected with a bogie, and the bogie can be electrically connected with a power supply return rail through a vehicle comprehensive grounding device and a corresponding current receiving device; the car body grounding resistor is serially arranged between the car body and the bogie of the magnetic-levitation train, and the protective grounding device can directly and electrically connect the car body with the in-station grounding rail; therefore, the vehicle power supply loop is prevented from generating electric energy interaction with the ground through the vehicle body, and no extra electric loss exists; ensuring that the protection ground is separated from the working ground; the vehicle-mounted weak current equipment can ensure that the interference generated by the vehicle traction system and the auxiliary power supply system can be normally released through the comprehensive grounding device, and can ensure the normal working environment of the vehicle-mounted weak current equipment. The reliability of the vehicle power supply grounding system is improved, the fault points are reduced, the fault rate is reduced, and the maintenance cost caused by extra electrical loss is reduced.
Description
Technical Field
The invention relates to the technical field of magnetic suspension trains, in particular to a magnetic suspension train and a vehicle grounding system structure thereof.
Background
Each car of maglev train all is equipped with ground connection topological structure, and carries out equipotential connection between each car, and the automobile body is connected with the bogie equipotential, and on-vehicle electrical equipment installs on the automobile body, and electrical equipment's casing and automobile body connection, protective earthing device, basic brake equipment all install on the bogie to realize the equipotential through mechanical connection.
The defects of the prior art are as follows:
(1) the protective grounding device is equipotential to the bogie when the vehicle enters the station, and the protective grounding device is in contact with the grounding rail in the station, so that extra electrical loss is caused to the protective grounding device;
(2) the vehicle-mounted weak current equipment is connected with the bogie and is easily interfered by traction system equipment, an auxiliary power supply system and other vehicles outside the vehicle, so that the normal work of the weak current equipment is influenced.
Therefore, how to improve the grounding structure to reduce the electrical loss and protect the reliability of each component is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a vehicle grounding system of a magnetic suspension train, which has small electric loss and high reliability of using each part of a train body.
The invention provides a vehicle grounding system of a maglev train, which comprises a protective grounding device, a vehicle comprehensive grounding device and a train body grounding resistor, wherein a vehicle-mounted electrical equipment shell of the maglev train is electrically connected with a bogie, the bogie can be electrically connected with a power supply return track through the vehicle comprehensive grounding device and a corresponding current receiving device, the train body grounding resistor is arranged between a train body and the bogie of the maglev train in series, and the protective grounding device can directly and electrically connect the train body with an in-station grounding track.
The grounding resistor of the train body is arranged between the train body and the bogie of the maglev train in series, the protective grounding device can directly and electrically connect the train body and the in-station grounding rail, and by reasonably setting the resistance value of the grounding resistor of the train body, when the train runs, the interference generated by power supply circuits of an auxiliary power supply system, a traction system and the like is released through the comprehensive grounding device and the current receiving device of the train without being released through the train body, so that the grounding reliability of the train is improved under the condition of ensuring the normal work of the vehicle-mounted electrical equipment. And when the vehicle enters the station, the vehicle body can be electrically connected with the in-station grounding rail through the protective grounding device so as to realize equipotential connection between the vehicle body and the station, and the safety of passengers getting on and off the vehicle is ensured.
The grounding system structure of the maglev train vehicle provided by the invention has the advantages that the grounding of strong electric parts such as the vehicle body grounding, the bogie and the vehicle-mounted electric equipment is separately separated by serially connecting the vehicle body grounding resistor between the bogie and the vehicle body, the station grounding of the vehicle body is realized by matching the protective grounding device and the station grounding rail, and the vehicle-mounted electric equipment realizes the grounding through the vehicle comprehensive grounding device when the vehicle is in a running state. The grounding device can classify and configure the grounding of the vehicle, ensures the full realization of functions, reduces fault points caused by complex grounding of the vehicle, improves the integral reliability of the vehicle, reduces the maintenance cost and ensures the running safety and high-quality and high-reliability running quality of the magnetic-levitation train.
By the vehicle grounding system, the vehicle power supply circuit can be prevented from generating electric energy interaction with the ground through the vehicle body, so that no extra electric loss exists; ensuring that the protection ground is separated from the working ground; the vehicle-mounted weak current equipment can ensure that the interference generated by the vehicle traction system and the auxiliary power supply system can be normally released through the comprehensive grounding device, and can ensure the normal working environment of the vehicle-mounted weak current equipment. The reliability of the vehicle power supply vehicle grounding system is improved, the fault points are reduced, the fault rate is reduced, and the maintenance cost caused by extra electrical loss is reduced.
Optionally, the resistance range of the vehicle body ground resistor is 30m Ω -200 m Ω.
Optionally, the protective grounding device is directly mounted on the vehicle body or electrically connected to the vehicle body through a line, and the protective grounding device further includes a fitting portion in fitting sliding contact with the in-station grounding rail.
Optionally, the protective grounding device is a device or material with low impedance and high conductivity.
Optionally, the system further comprises a foundation braking device, the foundation braking device is mounted on the bogie, and the mechanical connection position between the foundation braking device and the bogie is in non-electrical communication through insulating mounting or in a non-insulating mounting manner; the foundation brake device can act with the braking surface of the vehicle running rail to brake the vehicle when in work.
Optionally, the vehicle integrated grounding device includes a circuit structure formed by one or more of a resistor, a diode, a capacitor and an inductor.
The present invention also provides a maglev train formed from at least one train consist, a vehicle grounding system for a maglev train as defined in any of the preceding claims, wherein the onboard electrical equipment comprises at least electrical components in the traction system, the auxiliary power supply system or both.
Optionally, the mechanical connection position between the bogie and the corresponding vehicle body is in an insulated non-electric communication mode.
The magnetic suspension train of the invention has the vehicle grounding system, so the magnetic suspension train also has the technical effect of the vehicle grounding system.
Drawings
Fig. 1 is a schematic diagram of a vehicle grounding system of a maglev train in an embodiment of the present invention.
Wherein, in fig. 1:
1-a vehicle body; 2-a bogie; 3-a vehicle electrical device; 4-vehicle integrated grounding device; 5-protective grounding means; 6-a foundation brake device; 7-a current-receiving device; 8-vehicle body ground resistance; 10-an intra-station grounding rail; 20-vehicle running rails; 30-power supply return current rail.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram of a vehicle grounding system of a magnetic levitation train according to an embodiment of the present invention.
The magnetic suspension train realizes non-contact suspension and guidance between the train and the track through electromagnetic force and realizes train operation by using the traction of the linear motor.
The maglev train typically includes N-number of vehicles in a consist, for example, beijing' S line S1 is formed by 6 vehicles in a consist, although the number of vehicles in a consist of a maglev train is not limited to the 6 vehicles described herein, and may include any number of vehicles. The vehicle grounding system is a grounding system of a single group of vehicles. A magnetic levitation train may include one or more vehicles having the vehicle grounding system herein.
The maglev train comprises a bogie 2, a train body 1 and various vehicle-mounted electrical equipment 3 arranged on the train body 1 and the bogie 2. In order to ensure the personal safety of the train and passengers inside the train, the train needs to form equivalent electric potentials at each part of the train in the running process. The vehicle body herein mainly refers to a structural portion.
The invention provides a grounding system of a maglev train, which comprises a protective grounding device 5, a comprehensive vehicle grounding device 4, a foundation braking device 6 and a train body grounding resistor 8. The housing of the onboard electrical equipment 3 of the maglev train is electrically connected with the bogie 2, that is, each electrical component in the onboard electrical equipment 3 and the bogie 2 form an equivalent electrical potential, and the two form an equivalent electrical potential through a line or a direct connection mode. The onboard electrical equipment 3 described herein includes, but is not limited to, electrical components in the traction system, the auxiliary power supply system, or both, i.e., the onboard electrical equipment 3 includes at least electrical components in the traction system and the auxiliary power supply system, or both. In this case, the bogie 2 serves as a reference ground for the traction system, the auxiliary power supply system, and other vehicle devices, and the electrical components are grounded via the bogie 2.
The bogie 2 can be electrically connected to the power return rail 30 via the vehicle integrated earthing device 4 and the respective current collector 7. One end of the current collector 7 can be in contact electrical connection with the return current rail 30, and the other end is electrically connected to the bogie 2 via the vehicle integrated grounding device 4. Thus, when the vehicle is moving, the electric components on the vehicle, the bogie 2, can be electrically connected with the power supply return current rail 30 through the current receiving device 7 so as to realize the ground connection of the vehicle operation.
The vehicle body grounding resistor 8 is arranged between the vehicle body 1 and the bogie 2 of the maglev train in series, the protective grounding device 5 can directly and electrically connect the vehicle body 1 and the in-station grounding rail 10, and by reasonably setting the resistance value of the vehicle body grounding resistor 8, when the vehicle runs, the interference generated by power supply loops of an auxiliary power supply system, a traction system and the like is released through the vehicle comprehensive grounding device 4 and the current receiving device 7 instead of the vehicle body 1, so that the reliability of vehicle grounding is improved under the condition of ensuring the normal work of the vehicle-mounted electrical equipment 3. And when the vehicle enters the station, the vehicle body 1 can be electrically connected with the in-station grounding rail 10 through the protective grounding device 5 to realize equipotential connection between the vehicle body 1 and the station, so that the safety of passengers getting on and off the vehicle is ensured.
The vehicle grounding system of the maglev train provided by the invention is characterized in that a vehicle body grounding resistor 8 is connected between a bogie 2 and a vehicle body 1 in series, so that the grounding of the vehicle body 1, the bogie 2, the vehicle-mounted electrical equipment 3 and other strong electrical components is separated independently, the grounding of the vehicle body 1 when the vehicle enters the station is realized by matching a protective grounding device 5 with an in-station grounding rail 10, and the vehicle-mounted electrical equipment 3 realizes the grounding through a vehicle comprehensive grounding device 4 when the vehicle is in a running state. The grounding device can classify and configure the grounding of the vehicle, ensures the full realization of functions, reduces fault points caused by complex grounding of the vehicle, improves the integral reliability of the vehicle, reduces the maintenance cost and ensures the running safety and high-quality and high-reliability running quality of the magnetic-levitation train.
By the vehicle grounding system, the vehicle power supply circuit can be ensured not to generate electric energy interaction with the ground through the vehicle body 1, so that no extra electric loss exists; ensuring that the protection ground is separated from the working ground; the vehicle-mounted weak current equipment grounding device can ensure that the interference generated by the vehicle traction system and the auxiliary power supply system can be normally discharged through the comprehensive grounding device, and can ensure the normal working environment of the vehicle-mounted weak current equipment. The reliability of the vehicle power supply vehicle grounding system is improved, the fault points are reduced, the fault rate is reduced, and the maintenance cost caused by extra electrical loss is reduced.
The function of the above-mentioned car body ground resistance 8 is to improve the car body impedance, avoid the electric charge on the bogie 2 to flow back to the car body 1, the resistance value of the car body ground resistance 8 can be set up rationally according to the service environment, it does not disclose the magnitude of its resistance here and does not influence the technical solution's understanding and implementation of technical staff in this paper in this text.
In one embodiment, the resistance value of the vehicle body ground resistor 8 ranges from 30m Ω to 200m Ω.
In the above embodiments, the protective earthing device 5 is directly attached to the vehicle body 1 or electrically connected to the vehicle body 1 through a wire, and the protective earthing device 5 further includes an engaging portion which is engaged with the intra-station earthing rail 10 in sliding contact. In operation, the protective earthing device 5 can slide in contact with the in-station earthing rail 10.
The protective grounding device 5 is a device or material with low impedance and high conductivity. The structure of the protective earthing device 5 can be arranged appropriately according to the description herein and the function it performs. The technical solutions can be understood and implemented by those skilled in the art according to the description herein.
In the above embodiments, the bogie 2 is further provided with the foundation brake device 6, and the mechanical connection position between the foundation brake device 6 and the bogie 2 can be in non-electrical communication with each other by insulating installation or in a non-insulating installation manner; the foundation brake device 6 is operative to interact with the braking surfaces of the vehicle running rails to provide braking force, the specific form of the braking surfaces being not limited.
The vehicle integrated grounding device 4 in each of the above embodiments may specifically include a circuit structure composed of one or more of a resistor, a diode, a capacitor, and an inductor.
The connecting position of the bogie 2 and the corresponding vehicle body 1 in the invention adopts an insulation non-electric communication mode.
Other structures of the maglev train can refer to the prior art and are not specifically described herein.
The magnetic suspension train and the vehicle grounding system thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The vehicle grounding system of the maglev train is characterized by comprising a protective grounding device (5), a vehicle comprehensive grounding device (4) and a train body grounding resistor (8), wherein a vehicle-mounted electrical equipment shell of the maglev train is electrically connected with a bogie (2), and the bogie (2) can be electrically connected with a power supply return track through the vehicle comprehensive grounding device (4) and a corresponding current receiving device (7); the train body grounding resistor (8) is arranged between a train body (1) and a bogie (2) of the magnetic-levitation train in series, and the protective grounding device (5) can directly and electrically connect the train body with an in-station grounding rail;
the protective grounding device (5) is directly installed on the vehicle body or is electrically connected with the vehicle body through a line, and the protective grounding device (5) further comprises a matching part which is in matching sliding contact with the in-station grounding rail.
2. The vehicle grounding system of a maglev train according to claim 1, wherein the resistance value of the vehicle body grounding resistor (8) ranges from 30m Ω to 200m Ω.
3. The vehicle grounding system of a magnetic-levitation train as recited in claim 1 or 2, characterized in that the protective grounding device (5) is a device or material with low impedance and high conductivity.
4. The vehicle grounding system of the magnetic-levitation train as recited in claim 2, further comprising a foundation brake device (6), wherein the foundation brake device (6) is mounted on the bogie (2), and the mechanical connection position of the foundation brake device (6) and the bogie (2) adopts an insulated installation without electrical communication or adopts a non-insulated installation with electrical communication; the foundation brake device (6) can act on the braking surface of the vehicle running rail (20) when working to provide braking force.
5. The vehicle grounding system of a magnetic-levitation train as recited in claim 2, wherein the vehicle integrated grounding device comprises a circuit structure comprising one or more of a resistor, a diode, a capacitor and an inductor.
6. A maglev train formed from at least one vehicle consist, comprising a vehicle grounding system of a maglev train as claimed in any one of claims 1 to 5, wherein the onboard electrical equipment comprises at least electrical components in the traction system, the auxiliary power supply system or both.
7. A magnetic levitation train as claimed in claim 6, characterised in that the mechanical connection of the bogie (2) to the respective car body is in isolated electrical communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398550.5A CN112519590B (en) | 2020-12-03 | 2020-12-03 | Magnetic-levitation train and vehicle grounding system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398550.5A CN112519590B (en) | 2020-12-03 | 2020-12-03 | Magnetic-levitation train and vehicle grounding system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112519590A CN112519590A (en) | 2021-03-19 |
| CN112519590B true CN112519590B (en) | 2022-07-05 |
Family
ID=74997352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011398550.5A Active CN112519590B (en) | 2020-12-03 | 2020-12-03 | Magnetic-levitation train and vehicle grounding system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112519590B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118343168B (en) * | 2024-06-07 | 2025-11-07 | 中车青岛四方机车车辆股份有限公司 | Rail train |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126445A (en) * | 2011-01-25 | 2011-07-20 | 中国人民解放军国防科学技术大学 | Grounding and protecting method for medium-low speed maglev train |
| CN202703581U (en) * | 2012-05-15 | 2013-01-30 | 南车株洲电力机车有限公司 | Earthed circuit for rail car with car body |
| CN103481793A (en) * | 2013-09-17 | 2014-01-01 | 中国人民解放军国防科学技术大学 | Integrated grounding system for medium-and-low-speed maglev train |
| CN109624794A (en) * | 2018-12-12 | 2019-04-16 | 中车长春轨道客车股份有限公司 | A kind of system for the ground connection reflux of EMU vehicle |
| CN209700448U (en) * | 2018-12-12 | 2019-11-29 | 中车长春轨道客车股份有限公司 | A kind of system for the ground connection reflux of EMU vehicle |
| CN110606002A (en) * | 2019-09-25 | 2019-12-24 | 西南交通大学 | A method for independent distribution of working and safety grounding suitable for high-speed trains |
| JP2020121616A (en) * | 2019-01-30 | 2020-08-13 | 株式会社日立製作所 | Stray current estimation system, stray current estimation method, and stray current estimation program |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453060B (en) * | 2017-07-28 | 2019-06-18 | 中车株洲电力机车研究所有限公司 | A kind of track earthing or grounding means |
| CN111071041B (en) * | 2018-10-18 | 2023-05-23 | 中车株洲电力机车研究所有限公司 | Vehicle-mounted power supply system |
-
2020
- 2020-12-03 CN CN202011398550.5A patent/CN112519590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126445A (en) * | 2011-01-25 | 2011-07-20 | 中国人民解放军国防科学技术大学 | Grounding and protecting method for medium-low speed maglev train |
| CN202703581U (en) * | 2012-05-15 | 2013-01-30 | 南车株洲电力机车有限公司 | Earthed circuit for rail car with car body |
| CN103481793A (en) * | 2013-09-17 | 2014-01-01 | 中国人民解放军国防科学技术大学 | Integrated grounding system for medium-and-low-speed maglev train |
| CN109624794A (en) * | 2018-12-12 | 2019-04-16 | 中车长春轨道客车股份有限公司 | A kind of system for the ground connection reflux of EMU vehicle |
| CN209700448U (en) * | 2018-12-12 | 2019-11-29 | 中车长春轨道客车股份有限公司 | A kind of system for the ground connection reflux of EMU vehicle |
| JP2020121616A (en) * | 2019-01-30 | 2020-08-13 | 株式会社日立製作所 | Stray current estimation system, stray current estimation method, and stray current estimation program |
| CN110606002A (en) * | 2019-09-25 | 2019-12-24 | 西南交通大学 | A method for independent distribution of working and safety grounding suitable for high-speed trains |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112519590A (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103481793B (en) | Integrated grounding system for medium and low speed maglev trains | |
| US8690108B2 (en) | Rail vehicle | |
| CN113690639B (en) | Rail train's grounding system and rail train | |
| CN110606002B (en) | An independent distribution method of work and safety grounding suitable for high-speed trains | |
| MX2011002401A (en) | Conductor line, collector and conductor system. | |
| CN111347943B (en) | Rail transit vehicle grounding system | |
| CN202703581U (en) | Earthed circuit for rail car with car body | |
| US7952849B2 (en) | Rail vehicle with a wagon body and method for protective grounding of such a wagon body | |
| CN102126445A (en) | Grounding and protecting method for medium-low speed maglev train | |
| CN202378874U (en) | Vehicle grounding system of high-speed motor train unit | |
| CN112519590B (en) | Magnetic-levitation train and vehicle grounding system thereof | |
| CN208489367U (en) | Rail vehicle whole earthing or grounding means | |
| HATSUKADE | Reduction method of surge voltage on AC railcar's body | |
| CN111319516B (en) | System for an electric vehicle incorporating a road | |
| JP2019198193A (en) | Electric railway vehicle | |
| CN115548805A (en) | a subway train | |
| CN214325086U (en) | Arrangement for high-frequency equipotential connection and rail vehicle | |
| JP3536142B2 (en) | Electric vehicle ground circuit | |
| CN216969361U (en) | Current collecting circuit of current collector and current collecting high-voltage bus control circuit of current collector | |
| JP3927871B2 (en) | Abnormal voltage reduction device for high-speed railway vehicles | |
| CN101428636B (en) | Safety cut-out for joint-less track circuit | |
| JP2008154401A (en) | Railway vehicle drive apparatus and railway vehicle system | |
| RU189637U1 (en) | POWER ELECTRIC CIRCUIT OF DC ELECTRIC TRAIN TRAIN | |
| RU189706U1 (en) | POWER ELECTRICAL WIRING DIAGRAM OF AC VOLTAGE ELECTRIC TRAIN | |
| CN223260871U (en) | Double-flow system vehicle grounding circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |