CN115332826A - System and method for eliminating induced voltage of electronic guide rubber-tyred electric vehicle - Google Patents

Abstract

The invention discloses a system and a method for eliminating induced voltage of an electronic guide rubber-tyred electric car, which belong to the field of rail traffic. The system for eliminating the induced voltage of the electronic guide rubber-tyred electric car eliminates the panic of operators while eliminating the induced voltage, ensures the safe operation and maintenance of the rubber-tyred electric car, and has the advantages of low overall cost, easy implementation, good effect, wide popularization and application prospect and good social and economic benefits.

Description

A system and method for eliminating induced voltage of electronically guided rubber-tyred trams

technical field

The invention belongs to the field of rail transit, and in particular relates to a system and method for eliminating the induced voltage of an electronically guided rubber-tyred tram.

Background technique

With the rapid development of urban rail transit, the low-volume rail transit system has become an indispensable part of green public transportation. Among them, due to its special operating principle, the electronic-guided rubber-tyred tram can not only be mixed with vehicles on existing roads, but also has the advantages of small investment, low noise, and high comfort. Therefore, rubber-tired trams are widely used in the rail systems of major cities.

At present, my country's electronically guided rubber tire system, whether it is three-group intelligent rail (ART), digital rail (DRT) or four-group super-rail (SRT), when the vehicle is charging, it passes through the receiving station at the first and last station. The pantograph performs high-voltage DC fast charging to the internal energy storage system, and with the rapid development of technology, the method of using the principle of electromagnetic induction to charge the electric car has also emerged accordingly, so that the electric car can be charged every time it arrives at the station , with many features such as high efficiency and convenience.

However, since there is no third-rail return flow in electronically guided rubber-tyred trams, there is no reliable electrical connection between the rubber tires and the ground, and the rubber tires are basically insulated from the ground, so the induced charges accumulated on the surface of the vehicle cannot be conducted out. There will be a certain potential difference between the car body and the ground, causing the operator to easily feel the electric shock when touching the car body; and the traditional asphalt pavement and the metal material cannot be fully bonded, which is prone to cracking or uneven settlement. Therefore, the electrical grounding method in the traditional track system cannot be directly applied to the electronic guide rubber wheel system. To sum up, due to the operating characteristics of the electronically guided rubber tire system and the inability to fully bond metal materials and asphalt materials, it is impossible to use traditional methods or methods for electrical grounding during the charging operation of electronically guided rubber-tyred trams, which seriously affects the electronically guided rubber-tyred tram. The safety of trams during operation.

Contents of the invention

Aiming at one or more of the above defects or improvement needs of the prior art, the present invention provides a system for eliminating the induced voltage of electronic guide rubber-tyred electric cars, which can effectively eliminate the electric cars attached to the car body during fast charging. The induced voltage on the surface, and the combination of metal materials and pavement materials, realize a reliable electrical connection between the electronically guided rubber-tyred tram and the earth.

To achieve the above object, the present invention provides a system for eliminating the induced voltage of an electronically guided rubber-tyred tram, comprising at least one track and a conductive assembly;

Part or all of the track is buried in the road surface, used to guide the electronically guided rubber-tyred tram to run and contact with the conductive drag in the TP module of the electronically guided rubber-tyred tram, so that the induced charge on the surface of the electronically guided rubber-tyred tram can flow along The conductive drag is passed into the track;

The conductive component is also arranged in the road surface, and it is connected with the track; it is used to absorb the induced voltage transmitted to the track by the conductive drag, and guide it into the ground.

As a further improvement of the present invention, the conductive component includes at least one first conductive member, one end of the first conductive member is connected to the track, and the other end is connected to a second conductive member;

The end of the second conductive member away from the first conductive member is inserted into the greening outside the road surface or the dirt road shoulder.

As a further improvement of the present invention, there are multiple first conductive members, the multiple first conductive members are on the same horizontal plane, and are connected between every two adjacent first conductive members.

As a further improvement of the present invention, the track includes sleepers and steel rails;

the rail is mounted on the sleeper by fasteners; and

The rail is in contact with the first conductive member.

As a further improvement of the present invention, the first conductive member and the second conductive member are arranged orthogonally; and

The first conductive member is arranged perpendicularly to the rail.

As a further improvement of the present invention, the first conductive member is galvanized flat steel; the second conductive member is galvanized ground angle steel.

As a further improvement of the present invention, the road surface includes a bottom layer, a middle layer and a top modified layer laid vertically from bottom to top;

The bottom layer is made of reinforced concrete bottom plate material;

The middle layer is made of plain concrete material;

The top modified layer is made of medium-grain asphalt concrete material.

As a further improvement of the present invention, a top surface layer is also provided on the top modified layer, and a bottom base layer is provided below the bottom layer;

The top surface layer is a perfusion semi-flexible pavement,

The bottom base course is made of cement stabilized crushed stone material.

As a further improvement of the present invention, both sides of the reinforced concrete bottom plate are filled with lime soil.

On this basis, the present invention also provides a method for eliminating the induced voltage of the electronically guided rubber-tyred tram, which is realized by using the above-mentioned system for eliminating the induced voltage of the electronically guided rubber-tyred tram, which includes the following steps,

S1: Corresponding to the location of the electric-guided rubber-tyred tram charging station, carry out subgrade filling and excavation operations on the road surface, and bury the track and conductive components in the road surface;

S2: Set the conductive drag on the TP module of the electronic guide rubber-tyred tram, so that the conductive drag can contact with the track;

S3: Through the conductive drag, the induced charge attached to the surface of the electronic guide rubber-tyred tram during the charging process is transferred to the track and conductive components in sequence, and finally introduced into the ground;

S4: Complete the elimination of the induced voltage on the surface of the electronic guide rubber-tyred tram.

As a further improvement of the present invention, in step S4, after the track is installed, lime soil is filled at the position of the track and the outer periphery of the reinforced concrete floor.

The above-mentioned improved technical features can be combined with each other as long as they do not constitute conflicts with each other.

Generally speaking, compared with the prior art, the above technical solutions conceived by the present invention have beneficial effects including:

(1) The system and method for eliminating the induced voltage of electronically guided rubber-tyred trams of the present invention, through the rails arranged in the road surface and the conductive components connected with the rails, and cooperate with the bottom of the tram TP module to set the conductive drag, so that After the conductive mop is in contact with the track, it can transfer the induced charge on the surface of the tram to the track, and from the track to the conductive component, and finally to the ground, so that the tram and the ground have a reliable electrical connection, so as to ensure The inductive charge generated by the electric car during charging or after charging can quickly flow into the ground, which improves the safety of the car body during charging.

(2) The system and method for eliminating the induced voltage of electronically guided rubber-tyred trams according to the present invention, through the bottom base layer, middle layer, top modified layer and The top surface layer is embedded with the grounding structure of the track, replacing the traditional simple asphalt road or laying metal plates directly on the asphalt road surface, so that the track can be better bonded to the pavement structure and prevent the pavement from After the structure is used for a long time, problems such as cracking and uneven settlement appear on the road surface, which in turn enables the metal material to be better combined with the ground material at this position, which has high practical value and application prospects.

(3) The system and method for eliminating the induced voltage of electronically guided rubber-tyred trams of the present invention eliminates the panic of operators while eliminating the induced voltage, ensuring the safe operation and maintenance of rubber-tyred trams, and the overall cost of the scheme The invention is small, easy to implement, good in effect, broad in promotion and application prospect, and has good social and economic benefits.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the system for eliminating the induced voltage of electronic guide rubber-tyred tram in the embodiment of the present invention;

Fig. 2 is the overall structure schematic diagram of the system for eliminating the induced voltage of electronic guide rubber-tyred tram in the embodiment of the present invention;

3 is a schematic diagram of the overall structure of a system for eliminating the induced voltage of an electronically guided rubber-tyred tram in an embodiment of the present invention;

In all the drawings, the same reference numerals represent the same technical features, specifically: 1. pavement; 101. semi-flexible pavement; 102. medium-grained asphalt concrete; 103. plain concrete; 104. reinforced concrete bottom plate; 105 , lime soil; 106, cement stabilized gravel;

2. Track; 201. Rail; 202. Sleeper; 203. Fastener; 3. Conductive component; 301. Galvanized flat steel; 302. Galvanized grounding angle steel; 4. Car body module.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

Example:

Please refer to Figures 1 to 3, the system for eliminating the induced voltage of electronically guided rubber-tyred trams in the preferred embodiment of the present invention is mainly used to reduce the induced voltage on the surface of the electronically guided rubber-tyred tram during the fast charging process. Charge is transferred to ground.

Specifically, the system includes a road surface 1 and at least one track 2 arranged in the road surface 1, the top of which is flush with the top of the road surface 1, and is used to guide the electronically guided rubber-wheeled tram to advance. A conductive component 3 is provided corresponding to the track 2 , and the conductive component 3 is connected to the track 2 and used to conduct the induced charge on the track 2 to the road surface 1 .

In a specific application scenario, the electronically guided rubber-tyred tram travels along the direction of track 2, and starts fast charging when the tram travels to the charging station. During the charging process and after charging, due to the lack of reliable electrical connection between the rubber wheels of the vehicle body and the ground, a large amount of induced voltage will be attached to the surface of the vehicle body, resulting in a certain potential difference between the vehicle body and the ground when people touch the vehicle body. The operating personnel will feel the electric shock when they touch the car body, which is not conducive to the safe operation of the electronically guided rubber-tyred tram.

In the following, the system in the preferred embodiment of the present invention will be further described in combination with the above application scenarios.

Further, in order to transfer a large amount of induced charges attached to the surface of the electronically guided rubber-tyred tram to the ground, a conductive drag is provided on the body module 4 of the electronically guided rubber-tyred tram where a pantograph is installed, and the conductive drag is in contact with the top of the track 2 , and then transfer the induced charge on the surface of the vehicle body to the track 2 through the conductive drag, and transfer it to the ground by using the conductive component 3 connected to the track 2, so as to effectively eliminate the induced voltage on the surface of the vehicle body and ensure that the workers or passengers The safety of personnel when in contact with the vehicle body.

In more detail, the track 2 includes a steel rail 201 and a sleeper 202 , and the steel rail 201 is installed on the sleeper 202 through a fastener 203 . The conductive assembly 3 includes at least one first conductive part and a second conductive part connected to the first conductive part, the first conductive part is connected to the rail 201, and the end of the second conductive part away from the first conductive part is inserted into the interior of the road surface 1, Furthermore, the induced charge on the rail 201 can flow from the first conductive member into the second conductive member, and finally flow into the road surface 1 .

Further, preferably, the galvanized flat steel 301 is arranged horizontally and transversely in the road surface 1 and is perpendicular to the steel rail 201 . At the same time, each rail 201 is preferably provided with a plurality of first conductive parts, and each adjacent two first conductive parts are connected and arranged, and one of the first conductive parts in the plurality of rails 201 is connected to the rail 201, Furthermore, the induced voltage on the rail 201 is rapidly derived through the plurality of first conductive members.

In the actual setting process, when there are multiple first conductive elements, second conductive elements matching the number may be provided, that is, each first conductive element is connected to one second conductive element. Further preferably, the first conductive member and the second conductive member are arranged orthogonally, and the second conductive member is vertically inserted into the road surface 1 .

In a specific embodiment, the first conductive part is galvanized flat steel 301, the second conductive part is galvanized ground angle steel 302, galvanized flat steel 301 and angle steel are welded together, and galvanized flat steel 301 and rail 201 They can be welded together or connected by contact. During the charging process of the electronically guided rubber-tyred tram, the power is transmitted from the pantograph to the battery pack of the car body. Due to the principle of electromagnetic induction, the induced charge part remains on the surface of the car body, and is transferred from the conductive drag, track 2 and The conductive component 3 is guided into the ground, thereby quickly eliminating the voltage on the surface.

Further, the steel rail 201 is a vertically symmetrical steel rail 201, and preferably the steel rail 201 adopts I18 type I-beam. The galvanized flat steel 301 is preferably arranged under the rail 201, and the 50*5 galvanized flat steel 301 is connected to the galvanized grounding angle 302, and the galvanized grounding angle 302 is preferably connected to the grounding terminal in the charging station.

In addition, since traditional metal materials and pavement materials are difficult to be bonded together after being combined, problems such as cracking or uneven settlement are likely to occur after metal materials are placed in the pavement, therefore, the present invention adopts the pavement 1 embedded metal material , so that the metal material can be better buried in the pavement 1 . Specifically, the pavement 1 is provided with a bottom base layer, a middle layer, a top modified layer and a top surface layer in sequence from bottom to top vertically.

In a specific embodiment, the bottom base layer is filled with cement-stabilized gravel 106, the bottom layer is reinforced concrete floor 104, the middle layer is filled with plain concrete 103, the top modified layer is filled with medium-grained asphalt concrete 102, and the top surface layer is The perfusion semi-flexible pavement 101, the track 2 and the conductive component 3 are all arranged in the middle filled with plain concrete 103, and the bottom is connected with the reinforced plain concrete 103 board, so as to ensure the stable assembly of metal materials underground, It enables the metal material to be fully combined with the pavement material.

Furthermore, preferably, the plain concrete 103 is filled with C30 plain concrete 103 material, and the reinforced concrete bottom plate 104 is filled with C35 reinforced concrete bottom plate 104 . At the same time, both sides of the C35 reinforced concrete bottom slab 104 are filled with lime soil 105 to restrict it, so as to ensure the stability of the reinforced concrete bottom slab 104 after paving.

In addition, in the process of actual setting, it is preferable that the pavement thickness of the top surface layer is 4 cm, and the thickness of the top modified layer is 8 cm, so as to further ensure the flatness of the top of the road surface 1 .

It can be understood that the assembly form of the road surface 1 can also be directly applied to the paved road surface of the electronically guided rubber-tyred tram, so that the metal track 2 is fully combined with the ground material. In addition, in the process of actual setting, it is preferable to set up the charging station corresponding to the structure of the road surface 1 for electronically guided rubber-tyred trams, so as to perfectly solve the problem of easy adhesion induction on the body surface of electronically guided rubber-tyred trams during the charging process and after charging. The problem of charging ensures the safety of the car body during and after charging.

On this basis, the present invention also provides a method for eliminating the induced voltage of the electronically guided rubber-tyred tram, which includes the following steps:

S1: Corresponding to the location of the electric-guided rubber-tyred tram charging station, carry out subgrade filling and excavation operations on the road surface, and bury the track and conductive components in the road surface;

S2: Set the conductive drag on the TP module of the electronic guide rubber-tyred tram, so that the conductive drag can contact with the track;

S3: Through the conductive drag, the induced charge attached to the surface of the electronic guide rubber-tyred tram during the charging process is transferred to the track and conductive components in sequence, and finally introduced into the ground;

S4: Complete the elimination of the induced voltage on the surface of the electronic guide rubber-tyred tram.

The system for eliminating the induced voltage of electronically guided rubber-tyred trams in the present invention eliminates the induced voltage and at the same time eliminates the panic of operators, ensures the safe operation and maintenance of trams, and the overall cost of the scheme is small, easy to implement, and good in effect , broad prospects for promotion and application, with good social and economic benefits.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (10)

1. A system for eliminating the induced voltage of an electronically guided rubber-tyred tram, comprising at least one track and a conductive assembly; Part or all of the track is buried in the road surface, used to guide the electronically guided rubber-tyred tram to run and contact with the conductive drag in the TP module of the electronically guided rubber-tyred tram, so that the induced charge on the surface of the electronically guided rubber-tyred tram can flow along The conductive drag is passed into the track; The conductive component is also arranged in the road surface, and it is connected with the track; it is used to absorb the induced voltage transmitted to the track by the conductive drag, and guide it into the ground. 2. The system for eliminating the induced voltage of electronically guided rubber-tyred trams according to claim 1, wherein the conductive assembly includes at least one first conductive member, and one end of the first conductive member is connected to the track The connection is set, and the other end is connected with the second conductive member; The end of the second conductive member away from the first conductive member is inserted into the greening outside the road surface or the dirt road shoulder. 3. The system for eliminating the induced voltage of electronically guided rubber-tyred trams according to claim 2, wherein there are multiple first conductive members, and the plurality of first conductive members are on the same horizontal plane, and Every adjacent two of the first conductive members are connected to each other. 4. The system for eliminating the induced voltage of electronic guided rubber-tyred trams according to claim 3, wherein the track comprises sleepers and rails; the rail is mounted on the sleeper by fasteners; and The rail is in contact with the first conductive member. 5. The system for eliminating the induced voltage of an electronically guided rubber-tyred tram according to claim 4, wherein the first conductive member and the second conductive member are arranged orthogonally; and The first conductive member is arranged perpendicularly to the rail. 6. The system for eliminating the induced voltage of electronically guided rubber-tyred trams according to any one of claims 2 to 5, wherein the first conductive member is galvanized flat steel; the second conductive member For galvanized ground angle steel. 7. The system for eliminating the induced voltage of electronically guided rubber-tyred trams according to any one of claims 1 to 6, wherein the road surface includes a bottom layer and an intermediate layer laid vertically from bottom to top and the top modified layer; The bottom layer is made of reinforced concrete bottom plate material; The middle layer is made of plain concrete material; The top modified layer is made of medium-grain asphalt concrete material. 8. The system for eliminating the induced voltage of electronic guided rubber-tyred trams according to claim 7, wherein a top surface layer is also arranged on the top modified layer, and a bottom base layer is arranged below the bottom layer ; The top surface layer is a perfusion semi-flexible pavement, The bottom base course is made of cement stabilized crushed stone material. 9. The system for eliminating the induced voltage of electronically guided rubber-tyred trams according to claim 8, wherein both sides of the reinforced concrete bottom plate are filled with lime soil. 10. A method for eliminating the induced voltage of an electronically guided rubber-tyred tram, characterized in that it is realized by utilizing the system for eliminating the induced voltage of an electronically guided rubber-tyred tram according to any one of claims 1 to 8, comprising the following step: S1: Corresponding to the location of the electric-guided rubber-tyred tram charging station, carry out subgrade filling and excavation operations on the road surface, and bury the track and conductive components in the road surface; S2: Set the conductive drag on the TP module of the electronic guide rubber-tyred tram, so that the conductive drag can contact with the track; S3: Through the conductive drag, the induced charge attached to the surface of the electronic guide rubber-tyred tram during the charging process is transferred to the track and conductive components in sequence, and finally introduced into the ground; S4: Complete the elimination of the induced voltage on the surface of the electronic guide rubber-tyred tram.

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