CN216942973U

CN216942973U - Magnetic suspension train with electrostatic discharge device

Info

Publication number: CN216942973U
Application number: CN202123304202.XU
Authority: CN
Inventors: 赵明; 毛凯; 查小菲; 李志军; 左平洋; 胡良辉; 沈胜兵
Original assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-12
Anticipated expiration: 2031-12-24

Abstract

The utility model provides a magnetic suspension train with an electrostatic discharge device, which comprises a magnetic suspension train body, a first electrostatic discharge device and a second electrostatic discharge device, wherein the magnetic suspension train body comprises a train head, a train body and a train tail which are sequentially connected; the first static electricity discharge device is arranged on the longitudinal center section of the vehicle body and is positioned at the top of the vehicle body, and the second static electricity discharge device is arranged at the tip end of the vehicle tail. The utility model can solve the technical problem that the static electricity discharge methods in the prior art can not meet the static electricity discharge requirements of high-speed flying trains.

Description

Magnetic suspension train with electrostatic discharge device

Technical Field

The utility model relates to the technical field of ultra-high-speed maglev train electrostatic discharge, in particular to a maglev train with an electrostatic discharge device.

Background

During the running process of a high-speed running train, a large amount of static electricity is generated by the friction of wind, snow, dust and a train body, particularly, when a maglev train runs in a strong electromagnetic environment, the vehicle can generate the static electricity during the running process, the frequency band generated by the static electricity discharge is wide, the electric field amplitude is large, all high, medium and low frequency radio signals can be submerged, and a radio communication and navigation system cannot work normally. In order to reduce the influence of static electricity on vehicles, static electricity release needs to be realized for high-speed motor train units and magnetic suspension trains.

At present, in the existing wheel-rail type high-speed motor train unit, a vehicle is in contact with the ground through a bogie, and when static electricity is generated in the running process of the vehicle, the static electricity can be released to the ground in time through the bogie. The grounding scheme of the high-speed motor train unit is shown in fig. 5, the grounding system of the high-speed motor train unit is formed by connecting a train body with a bogie through a grounding wire, and the bogie is connected with a wheel rail through a grounding carbon brush, so that the working grounding and the protective grounding of the motor train unit are realized.

The existing Shanghai maglev train adopts a power supply mode of a third contact rail, as shown in fig. 6, power supply and grounding on the train pass through a power rail (+/-) and a power rail (PE) on a support rail, and static electricity generated in the running process of the train can be guided into the ground through the power rail (PE), so that the safety of vehicle-mounted equipment and a train body is ensured.

However, the above methods are not suitable for high-speed low-temperature superconducting maglev trains, the trains adopt a U-shaped rail section, the trains are suspended in the U-shaped rail section, the highest running speed is 1000km/h, and in a high-speed running state, the conventional wheel rail grounding and third rail grounding mode easily causes the change of the vehicle pneumatic characteristics and influences the stable running of the vehicles, and the static electricity discharge requirements of high-speed flying trains cannot be met.

Disclosure of Invention

The utility model provides a magnetic suspension train with an electrostatic discharge device, which can solve the technical problem that the electrostatic discharge method in the prior art can not meet the electrostatic discharge requirement of a high-speed flying train.

The utility model provides a magnetic suspension train with an electrostatic discharge device, which comprises a magnetic suspension train body, a first electrostatic discharge device and a second electrostatic discharge device, wherein the magnetic suspension train body comprises a train head, a train body and a train tail which are sequentially connected; the first static electricity discharge device is arranged on the longitudinal center section of the vehicle body and is positioned at the top of the vehicle body, and the second static electricity discharge device is arranged at the tip end of the vehicle tail.

Preferably, the first electrostatic discharge device and the second electrostatic discharge device are symmetrically arranged along a connection surface of the vehicle body and the vehicle tail.

Preferably, the first electrostatic discharge device is spaced from a connection surface between the vehicle body and the vehicle tail by 1 m.

Preferably, the first electrostatic discharge device and the second electrostatic discharge device are both electrostatic discharge brushes.

Preferably, the distance between the discharge tip of the first electrostatic discharge brush and the vehicle body is more than 50 mm; the distance from the discharge tip of the second electrostatic discharge brush to the tail of the vehicle is greater than 50 mm.

Preferably, the first electrostatic discharge brush is connected with the vehicle body in a bonding or screwing mode, and the second electrostatic discharge brush is connected with the vehicle tail in a bonding or screwing mode.

Preferably, the magnetic suspension train further comprises a support wheel, the support wheel is arranged at the bottom of the magnetic suspension train body, and tires of the support wheel are static tires.

By applying the technical scheme of the utility model, the static electricity releasing devices are arranged at the vehicle body and the tail of the magnetic suspension vehicle body, so that the static electricity generated in the running process of the magnetic suspension train can be effectively released, the static electricity voltage is reduced to be below 20kv, the electric shock accident of ground maintenance personnel in the lapping process of the grounding device can be effectively prevented, and the operation safety risk is reduced. Meanwhile, the magnetic suspension train body is provided with wireless communication equipment and a static electricity releasing device, so that the radio frequency interference of static electricity can be effectively reduced, and the reliability of the system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 shows a side view of a magnetic levitation vehicle with an electrostatic discharge device provided according to an embodiment of the utility model;

fig. 2 shows a top view of a magnetic levitation vehicle with an electrostatic discharge device provided according to an embodiment of the utility model;

fig. 3 is a schematic structural diagram illustrating a low-speed sliding state of a maglev train according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a high-speed levitation state of a maglev train according to an embodiment of the present invention;

FIG. 5 shows a schematic diagram of a prior art grounding scheme for a motor train unit;

fig. 6 shows a schematic representation of a conventional grounding scheme for a magnetic levitation vehicle.

Wherein the figures include the following reference numerals:

10. a magnetic suspension train body; 11. a headstock; 12. a vehicle body; 13. the tail of the vehicle;

21. a first electrostatic discharge device; 22. a second electrostatic discharge device;

30. a support wheel; 40. a support rail; 50. u-shaped beam.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and fig. 2, the present invention provides a magnetic levitation train with an electrostatic discharge device, comprising a magnetic levitation train body 10, a first electrostatic discharge device 21 and a second electrostatic discharge device 22, wherein the magnetic levitation train body 10 comprises a train head 11, a train body 12 and a train tail 13 which are connected in sequence; the first electrostatic discharge device 21 is disposed on a longitudinal center cross section of the vehicle body 12 at a top of the vehicle body 12, and the second electrostatic discharge device 22 is disposed at a tip end portion of the vehicle tail 13.

According to the utility model, the static electricity releasing devices are arranged at the positions of the train body 12 and the train tail 13 of the magnetic suspension train body 10, so that static electricity generated in the running process of a magnetic suspension train can be effectively released, the static electricity voltage is reduced to be below 20kv, electric shock accidents can be effectively prevented from occurring in the lapping process of a grounding device by ground maintenance personnel, and the operation safety risk is reduced. Meanwhile, the maglev train body 12 is provided with wireless communication equipment and a static electricity releasing device, so that the radio frequency interference of static electricity can be effectively reduced, and the system reliability is improved.

In the present invention, the longitudinal direction of the vehicle body 12 is the direction of travel of the magnetic levitation vehicle.

According to an embodiment of the present invention, the first electrostatic discharge device 21 and the second electrostatic discharge device 22 are symmetrically disposed along a connection plane of the vehicle body 12 and the vehicle tail 13, so as to achieve a better electrostatic discharge effect.

According to an embodiment of the present invention, the first electrostatic discharge device 21 is spaced from the connecting surface of the vehicle body 12 and the vehicle tail 13 by a distance of 1m, so as to achieve a better electrostatic discharge effect.

According to an embodiment of the present invention, the first electrostatic discharge device 21 and the second electrostatic discharge device 22 are electrostatic discharge brushes, and static electricity accumulated in the train during high-speed running is discharged through the form of the electrostatic discharge brushes.

Because static electricity can gather to the middle part of the train body and the tail tip part area in the high-speed running process of the train, two static discharge brushes are symmetrically arranged along the connecting surface of the train body 12 and the tail 13 or the distance between the first static discharge brush and the connecting surface of the train body 12 and the tail 13 is set to be 1m, so that the static discharge brushes can better discharge the static electricity.

According to one embodiment of the present invention, the discharge tip of the first electrostatic discharge brush is more than 50mm from the vehicle body 12; the distance from the discharge tip of the second electrostatic discharge brush to the vehicle tail 13 is more than 50mm to achieve a better electrostatic discharge effect.

According to one embodiment of the present invention, a first electrostatic discharge brush is attached to the vehicle body 12 by bonding or screwing, and a second electrostatic discharge brush is attached to the vehicle tail 13 by bonding or screwing.

According to an embodiment of the present invention, the maglev train further comprises support wheels 30, the support wheels 30 are arranged at the bottom of the maglev train body 10, and the tires of the support wheels 30 are electrostatic tires for discharging static electricity during low-speed sliding of the train.

In order to further understand the magnetic levitation vehicle with the electrostatic discharge device provided in the present invention, a detailed description of an embodiment is provided below.

When the maglev train is started and in a low-speed running state, the supporting wheels 30 support the train body to slide on the supporting rails 40, and the supporting wheels 30 adopt electrostatic tires for electrostatic discharge, as shown in fig. 3 in detail. When the maglev train runs at a high speed of 1000km/h, the whole train is in a suspension state, and the whole train stably runs between the U-shaped beams 50 by virtue of suspension guide rigidity, as shown in fig. 4. At the moment, the train does not reliably contact the grounding point, high-voltage static electricity of 1000kV can be generated on the train body by the friction generation and the electromagnetic induction of the train and the air, but the static electricity can not be released by a grounding method, and when the static electricity on the train body is accumulated to a certain voltage, the discharge phenomenon appears on the outer shell of the train body, which influences the normal work of a wireless communication system and an operation control system. Through setting up two electrostatic discharge brushes respectively at automobile body 12 of automobile body and rear of a vehicle 13 point department, can effectively release below 20kV with suspension operation in-process static. When the train slides through the support wheels 30 after falling, the rest of static electricity is discharged to the ground through the static tires on the support wheels 30.

The utility model can effectively reduce the electric shock risk of maintenance personnel and the risk of interference on wireless communication in the suspension operation process, and improves the operation safety and reliability of the magnetic suspension train.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic suspension train with a static electricity releasing device is characterized by comprising a magnetic suspension train body (10), a first static electricity releasing device (21) and a second static electricity releasing device (22), wherein the magnetic suspension train body (10) comprises a train head (11), a train body (12) and a train tail (13) which are sequentially connected; the first static electricity discharge device (21) is arranged on the longitudinal center section of the vehicle body (12) and is positioned at the top of the vehicle body (12), and the second static electricity discharge device (22) is arranged at the tip end part of the vehicle tail (13).

2. Magnetic levitation vehicle with electrostatic discharge device according to claim 1, characterised in that the first electrostatic discharge device (21) and the second electrostatic discharge device (22) are arranged symmetrically along the connection plane of the vehicle body (12) and the vehicle tail (13).

3. Magnetic levitation vehicle with electrostatic discharge device according to claim 1, characterised in that the first electrostatic discharge device (21) is at a distance of 1m from the connection surface of the vehicle body (12) to the vehicle tail (13).

4. Maglev train with electrostatic discharge device according to one of claims 1 to 3, characterized in that the first electrostatic discharge device (21) and the second electrostatic discharge device (22) are electrostatic discharge brushes.

5. Maglev train with electrostatic discharge device according to claim 4, characterized in that the discharge tip of the first electrostatic discharge brush is at a distance of more than 50mm from the vehicle body (12); the distance of the discharge tip of the second electrostatic discharge brush from the vehicle tail (13) is more than 50 mm.

6. Maglev train with electrostatic discharge device according to claim 4, characterized in that a first electrostatic discharge brush is connected to the vehicle body (12) by means of gluing or screwing and a second electrostatic discharge brush is connected to the vehicle tail (13) by means of gluing or screwing.

7. Magnetic levitation train with electrostatic discharge device according to any of claims 1-3, characterised in that the magnetic levitation train further comprises support wheels (30), the support wheels (30) being arranged at the bottom of the magnetic levitation vehicle body (10), the tyres of the support wheels (30) being electrostatic tyres.