Additional anti-dancing device for overhead contact network of electrified railway

Abstract

The present invention provides an additional conductor anti-dance device for an electrified railway contact network, which comprises: an inter-line insulator, a first inclined insulator, a second inclined insulator, a first steel cable and a second steel cable; wherein the top of the inter-line insulator is connected to the positive feeder of the contact network, and the bottom is connected to the protective wire of the contact network; wherein the top of the first inclined insulator is connected to the positive feeder, the bottom is connected to one end of the first steel cable, and the other end of the first steel cable is connected to the ground or a side wall; wherein the top of the second inclined insulator is connected to the protective wire, the bottom is connected to one end of the second steel cable, and the other end of the second steel cable is connected to the ground or a side wall; wherein the connection line of the inter-line insulator, the first inclined insulator, the first steel cable, the second inclined insulator and the second steel cable is a triangular stable structure. The additional conductor anti-dance device for an electrified railway contact network can prevent the additional conductor from violently dancing, and ensure the safe operation of the traction power supply system.

Description

Technical Field

[0001] The invention relates to the field of railways, and in particular to an additional conductor anti-dancing device for an electrified railway contact network. Background Art

[0002] The high-speed railway traction power supply system mainly adopts the autotransformer power supply mode, in which the positive feeder is generally installed on the field side of the pillar through an insulator suspension. The positive feeder and the protection line below it are both additional conductors of the overhead contact network. Both lines have no compensation devices and are easily affected by strong winds and cause dancing. The dancing trajectory is elliptical in the cross section perpendicular to the axis of the conductor. The dancing causes serious wear of the conductors and hardware, and is prone to discharge between conductors and line drop accidents, which has serious consequences for the safe operation of electrified railways.

[0003] Especially the Lanzhou-Xinjiang High-speed Railway, which passes through four major wind zones in Xinjiang. Wind disasters are serious along the railway, and the route of the Lanzhou-Xinjiang High-speed Railway in the Baili wind zone is basically perpendicular to the wind direction. Therefore, the additional conductors of the contact network in operation are more prone to wind-induced dancing, and the consequences are particularly serious, which directly threatens the safety of the Lanzhou-Xinjiang High-speed Railway.

[0004] Therefore, it is necessary to develop an anti-dancing device for the additional conductor of the electrified railway contact network, which can prevent the additional conductor from dancing violently and ensure the safe operation of the electrified railway traction power supply system.

[0005] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to provide an additional conductor anti-dancing device for an electrified railway contact network, which can prevent the positive feeder from violently dancing and ensure the safe operation of a traction power supply system.

[0007] In order to achieve the above-mentioned object, according to the present invention, there is provided an anti-dancing device for an additional conductor of an electrified railway overhead contact network, the anti-dancing device for an additional conductor of an electrified railway overhead contact network comprising: an inter-wire insulator, a first oblique insulator, a second oblique insulator, a first steel cable and a second steel cable;

[0008] The top end of the inter-line insulator is connected to the positive feeder of the overhead contact network, and the bottom end is connected to the protective wire of the overhead contact network;

[0009] The top end of the first inclined insulator is connected to the positive feeder, the bottom end is connected to one end of the first steel cable, and the other end of the first steel cable is connected to the ground or the side wall;

[0010] The top end of the second inclined insulator is connected to the protection wire, the bottom end is connected to one end of the second steel cable, and the other end of the second steel cable is connected to the ground or the side wall;

[0011] The connecting line of the inter-line insulator, the first oblique-stayed insulator, the first steel cable, the second oblique-stayed insulator and the second steel cable is in the shape of a triangle.

[0012] Preferably, it also includes a first wire clamp and a second wire clamp;

[0013] Wherein, the first wire clamp is sleeved on the positive feeder, the first wire clamp is connected to the top of the line insulator and the top of the first inclined insulator, the second wire clamp is sleeved on the protection wire, and the second wire clamp is connected to the bottom end of the line insulator and the top of the second inclined insulator.

[0014] Preferably, the first wire clamp and the second wire clamp each include: a connecting ring and two connecting members connected to the connecting ring;

[0015] The connecting ring is divided into an upper half ring and a lower half ring, and the upper half ring and the lower half ring are connected by bolts to be sleeved with a positive feeder or a protection line;

[0016] Wherein, one end of the two connecting members is fixed to the lower half ring of the connecting ring, and the two connecting members are in a branch shape.

[0017] Preferably, the line insulator comprises: a first shed, a first core rod, a first top fitting, and a first bottom fitting;

[0018] Among them, the first shed is made of silicone rubber material, the first core rod is made of glass fiber material, the first shed is wrapped on the first core rod, the first top end hardware is arranged at the top end of the line insulator, the first top end hardware is connected to the first wire clamp, the first bottom end hardware is arranged at the bottom end of the line insulator, and the first bottom end hardware is connected to the second wire clamp.

[0019] Preferably, the first oblique-stayed insulator comprises: a second shed, a second core rod, a second top fitting, and a second bottom fitting;

[0020] The second shed is made of silicone rubber material, the second core rod is made of glass fiber material, the second shed is wrapped around the second core rod, the second top end hardware is arranged at the top end of the first oblique-stayed insulator, the second top end hardware is connected to the first wire clamp, and the second bottom end hardware is arranged at the bottom end of the first oblique-stayed insulator and connected to the first steel cable.

[0021] Preferably, the second oblique-stayed insulator comprises: a third shed, a third core rod, a third top fitting, and a third bottom fitting;

[0022] Among them, the third umbrella skirt is made of silicone rubber material, the third core rod is made of glass fiber material, the third umbrella skirt is wrapped on the third core rod, the third top end hardware is arranged at the top end of the second oblique insulator, the third top end hardware is connected to the second wire clamp, and the third bottom end hardware is arranged at the bottom end of the second oblique insulator and connected to the second steel cable.

[0023] Preferably, it also includes a base, which is fixed on the ground or the side wall, and the first steel cable and the second steel cable are connected to the base.

[0024] Preferably, the base comprises: a mounting plate, a vertical plate, a fixing bolt and an axle pin;

[0025] Among them, the fixing bolt passes through the mounting plate and is fixed on the ground or the side wall. There are two vertical plates, which are arranged in parallel on the mounting plate. There are two axle pins, which pass through the two vertical plates. The first steel cable and the second steel cable are respectively connected to the two axle pins.

[0026] Beneficial effects:

[0027] 1) In the present application, the arrangement of inter-line insulators is used to stabilize and space the positive feeder and the protection line, the first inclined insulator and the first steel cable are used to constrain the positive feeder, and the second inclined insulator and the second steel cable are used to constrain the protection line. The triangular stable structure is used to constrain the additional conductor, limit the swing amplitude of the additional conductor, prevent the additional conductor from swinging violently, and ensure the safe operation of the traction power supply system.

[0028] 2) This application plays the role of isolating conductors with different potentials through the provision of inter-line insulators, first oblique-stayed insulators, and second oblique-stayed insulators, thereby ensuring the safety of the use of the additional conductor anti-dancing device for the electrified railway overhead contact network.

[0029] 3) In the present application, by providing the first steel cable and the second steel cable, the additional anti-dancing device for the contact network of electrified railways has a certain flexibility, thereby preventing the additional anti-dancing device for the contact network of electrified railways from directly bearing the load caused by the additional wires being blown by strong winds, thereby improving the service life of the additional anti-dancing device for the contact network of electrified railways and the positive feeder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a schematic structural diagram of an additional conductor anti-dancing device for an electrified railway overhead contact network according to an embodiment of the present invention.

[0031] Figure 2 The present invention is a schematic diagram of the use status of an additional conductor anti-dancing device for an electrified railway overhead contact network according to an embodiment of the present invention.

[0032] Figure 3 The present invention is a side view of an additional conductor anti-dancing device for an electrified railway overhead contact network according to an embodiment of the present invention.

[0033] Figure 4 The figure is a schematic structural diagram of an inter-line insulator according to an embodiment of the present invention.

[0034] Figure 5 It is a cross-sectional view of an inter-wire insulator according to an embodiment of the present invention.

[0035] Figure 6 It is a cross-sectional view of a first oblique-pull insulator according to an embodiment of the present invention.

[0036] Figure 7 It is a front view of a first wire clamp according to an embodiment of the present invention.

[0037] Figure 8 It is a schematic diagram of the use status of the first wire clamp of an embodiment of the present invention.

[0038] Fig. 9 It is a three-dimensional diagram of a first wire clamp according to an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Line insulator; 2. First oblique-stayed insulator; 3. Second oblique-stayed insulator; 4. First steel cable; 5. Second steel cable; 6. First wire clamp; 7. Second wire clamp; 8. First shed; 9. First core rod; 10. First top fitting; 11. First bottom fitting; 12. Second shed; 13. Second top fitting; 14. Second bottom fitting; 15. Third shed; 16. Third top fitting; 17. Third bottom fitting; 18. Mounting plate; 19. Vertical plate; 20. Fixing bolt; 21. Feeder; 22. Protection line; 23. Side wall; 24. Connecting ring; 25. Connector; 26. Second core rod; 27. Base; 28. Axle pin. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0042] According to one aspect of the present invention, there is provided an anti-dancing device for an additional conductor of an electrified railway overhead contact network, the anti-dancing device for an additional conductor of an electrified railway overhead contact network comprising: an inter-line insulator, a first oblique-stayed insulator, a second oblique-stayed insulator, a first steel cable and a second steel cable;

[0043] The top end of the inter-line insulator is connected to the positive feeder of the overhead contact network, and the bottom end is connected to the protective wire of the overhead contact network;

[0044] The top end of the first inclined insulator is connected to the positive feeder, the bottom end is connected to one end of the first steel cable, and the other end of the first steel cable is connected to the ground or the side wall;

[0045] The top end of the second inclined insulator is connected to the protection wire, the bottom end is connected to one end of the second steel cable, and the other end of the second steel cable is connected to the ground or the side wall;

[0046] The connecting line of the inter-line insulator, the first oblique-stayed insulator, the first steel cable, the second oblique-stayed insulator and the second steel cable is in the shape of a triangle.

[0047] The electrified railway contact network additional conductor anti-dancing device provided by the present invention, during use, connects the top end of the line insulator to the positive feeder, and the bottom end to the protective line, to stabilize and space the positive feeder and the protective line. Even if the positive feeder dances, the protective line will follow the positive feeder to maintain a safe distance, avoiding air discharge caused by insufficient spacing between the positive feeder and the protective line, which may cause a tripping accident. The positive feeder is further constrained by the first inclined insulator and the first steel cable, and the protective line is constrained by the second inclined insulator and the second steel cable. The triangular stable structure is used to simultaneously constrain the positive feeder and the protective line, thereby limiting the dancing amplitude of the additional conductor, preventing the additional conductor from dancing violently, and ensuring the safe operation of the traction power supply system.

[0048] The electrified railway contact network additional wire anti-dancing device provided by the present invention has a certain flexibility through the arrangement of the first steel cable and the second steel cable, thereby preventing the electrified railway contact network additional wire anti-dancing device from directly bearing the load generated by the additional wire being blown by strong winds, thereby improving the service life of the electrified railway contact network additional wire anti-dancing device and the additional wire.

[0049] Furthermore, it also includes a first wire clamp and a second wire clamp;

[0050] Wherein, the first wire clamp is sleeved on the positive feeder, the first wire clamp is connected to the top of the line insulator and the top of the first inclined insulator, the second wire clamp is sleeved on the protection wire, and the second wire clamp is connected to the bottom end of the line insulator and the top of the second inclined insulator.

[0051] In the technical solution, the additional conductor anti-dance device for the contact network of the electrified railway further includes a first wire clamp and a second wire clamp. Through the arrangement of the first wire clamp and the second wire clamp, the line insulator and the first oblique insulator are connected to the first wire clamp, so that the line insulator and the first oblique insulator share a connection point. The line insulator and the second oblique insulator are connected to the second wire clamp, so that the line insulator and the second oblique insulator share a connection point, so that the additional conductor anti-dance device for the contact network of the electrified railway is in a triangular shape as a whole when in use, which can improve stability and improve the restraint effect on the additional conductor.

[0052] Furthermore, the first wire clamp and the second wire clamp both include: a connecting ring and two connecting pieces connected to the connecting ring; wherein the connecting ring is divided into an upper half ring and a lower half ring, and the upper half ring and the lower half ring are connected by bolts to be sleeved on the positive feeder line or the protective line; wherein one end of the two connecting pieces are fixed to the lower half ring of the connecting ring, and the two connecting pieces are in a branch shape.

[0053] In this technical solution, a first wire clamp and a second wire clamp are further provided. Through the setting of a connecting ring, it is convenient to set the first wire clamp sleeve on the positive feeder line and to set the second wire clamp sleeve on the protective line. The first wire clamp and the second wire clamp both include two connecting parts, which facilitate the installation and disassembly of the inter-line insulator, the first oblique insulator and the second oblique insulator.

[0054] Furthermore, the line insulator comprises: a first shed, a first core rod, a first top fitting, and a first bottom fitting;

[0055] Among them, the first shed is made of silicone rubber material, the first core rod is made of glass fiber material, the first shed is wrapped on the first core rod, the first top end hardware is arranged at the top end of the line insulator, the first top end hardware is connected to the first wire clamp, the first bottom end hardware is arranged at the bottom end of the line insulator, and the first bottom end hardware is connected to the second wire clamp.

[0056] In this technical solution, the structure and material selection of the line insulator are further provided. By selecting silicone rubber material and glass fiber material, while ensuring the insulation effect, the line insulator is made lighter and easier to install, while reducing the additional load on the additional wire due to the deadweight of the line insulator.

[0057] Furthermore, the first oblique-stayed insulator comprises: a second shed, a second core rod, a second top fitting, and a second bottom fitting;

[0058] The second shed is made of silicone rubber material, the second core rod is made of glass fiber material, the second shed is wrapped around the second core rod, the second top end hardware is arranged at the top end of the first oblique-stayed insulator, the second top end hardware is connected to the first wire clamp, and the second bottom end hardware is arranged at the bottom end of the first oblique-stayed insulator and connected to the first steel cable.

[0059] Furthermore, the second oblique-stayed insulator comprises: a third shed, a third core rod, a third top fitting, and a third bottom fitting;

[0060] Among them, the third umbrella skirt is made of silicone rubber material, the third core rod is made of glass fiber material, the third umbrella skirt is wrapped on the third core rod, the third top end hardware is arranged at the top end of the second oblique insulator, the third top end hardware is connected to the second wire clamp, and the third bottom end hardware is arranged at the bottom end of the second oblique insulator and connected to the second steel cable.

[0061] In this technical solution, the structure and material selection of the first oblique-pull insulator and the second oblique-pull insulator are further provided. By selecting silicone rubber material and glass fiber material, while ensuring the insulation effect, the first oblique-pull insulator and the second oblique-pull insulator are made lighter and easier to install, while reducing the additional load on the additional wire due to the self-weight of the first oblique-pull insulator and the second oblique-pull insulator.

[0062] Specifically, the structures of the line insulator, the first oblique-pull insulator, and the second oblique-pull insulator can be the same, so as to facilitate the production and assembly of the additional wire anti-dancing device of the electrified railway contact network.

[0063] Furthermore, it also includes a base, which is fixed on the ground or the side wall, and the first steel cable and the second steel cable are connected to the base.

[0064] In this technical solution, the provision of the base facilitates the connection of the first steel cable and the second steel cable to the ground or the side wall.

[0065] Furthermore, the base comprises: a mounting plate, a vertical plate, a fixing bolt and an axle pin;

[0066] Among them, the fixing bolt passes through the mounting plate and is fixed on the ground or the side wall. There are two vertical plates, which are arranged in parallel on the mounting plate. There are two axle pins, which pass through the two vertical plates. The first steel cable and the second steel cable are respectively connected to the two axle pins.

[0067] In this technical solution, a specific structure of the base is further provided. Through the arrangement of a vertical plate and two axle pins, the first steel cable and the second steel cable are connected to the same base, so that the additional wire anti-dancing device for the electrified railway contact network has an overall triangular structure, thereby improving stability.

[0068] Example 1

[0069] Figure 1 The present invention is a schematic structural diagram of an additional conductor anti-dancing device for an electrified railway overhead contact network according to an embodiment of the present invention. Figure 2 The present invention is a schematic diagram of the use status of an additional conductor anti-dancing device for an electrified railway overhead contact network according to an embodiment of the present invention. Figure 3 The present invention is a side view of an additional conductor anti-dancing device for an electrified railway overhead contact network according to an embodiment of the present invention. Figure 4The figure is a schematic structural diagram of an inter-line insulator according to an embodiment of the present invention. Figure 5 It is a cross-sectional view of an inter-wire insulator according to an embodiment of the present invention. Figure 6 It is a cross-sectional view of a first oblique-pull insulator according to an embodiment of the present invention. Figure 7 It is a front view of a first wire clamp according to an embodiment of the present invention. Figure 8 It is a schematic diagram of the use status of the first wire clamp of an embodiment of the present invention. Fig. 9 It is a three-dimensional diagram of a first wire clamp according to an embodiment of the present invention.

[0070] like Figures 1 to 9 As shown, the additional conductor anti-dancing device for the overhead contact network of the electrified railway comprises: an inter-line insulator 1, a first oblique insulator 2, a second oblique insulator 3, a first steel cable 4 and a second steel cable 5;

[0071] The top end of the inter-line insulator 1 is connected to the positive feeder line 21 of the contact network, and the bottom end is connected to the protective line 22 of the contact network;

[0072] The top end of the first inclined insulator 2 is connected to the positive feeder 21, the bottom end is connected to one end of the first steel cable 4, and the other end of the first steel cable 4 is connected to the ground or the side wall 23;

[0073] The top end of the second inclined insulator 3 is connected to the protection line 22, the bottom end is connected to one end of the second steel cable 5, and the other end of the second steel cable 5 is connected to the ground or the side wall 23;

[0074] The connecting line of the inter-line insulator 1, the first oblique insulator 2, the first steel cable 4, the second oblique insulator 3 and the second steel cable 5 is a triangle;

[0075] Among them, it also includes a first wire clamp 6 and a second wire clamp 7;

[0076] The first wire clamp 6 is sleeved on the positive feeder 21, and the first wire clamp 6 is connected to the top of the line insulator 1 and the top of the first oblique insulator 2; the second wire clamp 7 is sleeved on the protection wire 22, and the second wire clamp 7 is connected to the bottom end of the line insulator 1 and the top of the second oblique insulator 3;

[0077] Wherein, the first wire clamp 6 and the second wire clamp 7 both include: a connecting ring 24 and two connecting members 25 connected to the connecting ring 24;

[0078] The connecting ring 24 is divided into an upper half ring and a lower half ring, and the upper half ring and the lower half ring are connected by bolts to be sleeved with the positive feeder line 21 or the protection line 22;

[0079] One end of the two connecting members 25 is fixed to the lower half of the connecting ring 24, and the two connecting members 25 are in a branch shape;

[0080] The inter-line insulator 1 comprises: a first shed 8, a first core rod 9, a first top fitting 10, and a first bottom fitting 11;

[0081] The first shed 8 is made of silicone rubber material, the first core rod 9 is made of glass fiber material, the first shed 8 is wrapped on the first core rod 9, the first top end hardware 10 is arranged at the top end of the line insulator 1, the first top end hardware 10 is connected to the first wire clamp 6, the first bottom end hardware 11 is arranged at the bottom end of the line insulator 1, and the first bottom end hardware 11 is connected to the second wire clamp 7;

[0082] The first oblique-stayed insulator 2 includes: a second shed 12, a second core rod 26, a second top fitting 13, and a second bottom fitting 14;

[0083] The second shed 12 is made of silicone rubber material, the second core rod 26 is made of glass fiber material, the second shed 12 is wrapped on the second core rod 26, the second top end hardware 13 is arranged at the top end of the first oblique insulator 2, the second top end hardware 13 is connected to the first wire clamp 6, and the second bottom end hardware 14 is arranged at the bottom end of the first oblique insulator 2 and connected to the first steel cable 4;

[0084] The second oblique-stayed insulator 3 includes: a third shed 15, a third core rod, a third top fitting 16, and a third bottom fitting 17;

[0085] The third shed 15 is made of silicone rubber material, the third core rod is made of glass fiber material, the third shed 15 is wrapped on the third core rod, the third top end hardware 16 is arranged at the top end of the second oblique insulator 3, the third top end hardware 16 is connected to the second wire clamp 7, and the third bottom end hardware 17 is arranged at the bottom end of the second oblique insulator 3 and connected to the second steel cable 5;

[0086] The base 27 is also included, and the base 27 is fixed on the ground or the side wall 23, and the first steel cable 4 and the second steel cable 5 are connected to the base 27;

[0087] The base 27 includes: a mounting plate 18, a vertical plate 19, a fixing bolt 20 and an axle pin 28;

[0088] Among them, the fixing bolt 20 passes through the mounting plate 18 and is fixed on the ground or the side wall 23. There are two vertical plates 19, which are arranged in parallel on the mounting plate 18. There are two axle pins 28, which pass through the two vertical plates 19. The first steel cable 4 and the second steel cable 5 are respectively connected to the two axle pins 28.

[0089] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An additional conductor anti-dancing device for an electrified railway contact network, characterized in that: The additional anti-dancing device for the overhead contact network of the electrified railway comprises: an inter-wire insulator, a first oblique insulator, a second oblique insulator, a first steel cable and a second steel cable, a first wire clamp and a second wire clamp; The top end of the inter-line insulator is connected to the positive feeder of the overhead contact network, and the bottom end is connected to the protective wire of the overhead contact network; The top end of the first inclined insulator is connected to the positive feeder, the bottom end is connected to one end of the first steel cable, and the other end of the first steel cable is connected to the side wall; The top end of the second inclined insulator is connected to the protection wire, the bottom end is connected to one end of the second steel cable, and the other end of the second steel cable is connected to the side wall; Wherein, the connecting line of the inter-line insulator, the first oblique insulator, the first steel cable, the second oblique insulator and the second steel cable is in the form of a triangle; Wherein, the first wire clamp is sleeved on the positive feeder, the first wire clamp is connected to the top of the line insulator and the top of the first oblique insulator, the second wire clamp is sleeved on the protection wire, the second wire clamp is connected to the bottom of the line insulator and the top of the second oblique insulator; Wherein, the first wire clamp and the second wire clamp both include: a connecting ring and two connecting pieces connected to the connecting ring; The connecting ring is divided into an upper half ring and a lower half ring, and the upper half ring and the lower half ring are connected by bolts to be sleeved with a positive feeder or a protection line; Wherein, one end of the two connecting members is fixed to the lower half ring of the connecting ring, and the two connecting members are in a branch shape.

2. The device for preventing additional conductor dancing of an electrified railway overhead contact network according to claim 1, characterized in that: The line insulator comprises: a first shed, a first core rod, a first top fitting, and a first bottom fitting; Among them, the first shed is made of silicone rubber material, the first core rod is made of glass fiber material, the first shed is wrapped on the first core rod, the first top end hardware is arranged at the top end of the line insulator, the first top end hardware is connected to the first wire clamp, the first bottom end hardware is arranged at the bottom end of the line insulator, and the first bottom end hardware is connected to the second wire clamp.

3. The device for preventing additional conductor dancing of an electrified railway overhead contact network according to claim 1, characterized in that: The first oblique-stayed insulator comprises: a second shed, a second core rod, a second top fitting, and a second bottom fitting; The second shed is made of silicone rubber material, the second core rod is made of glass fiber material, the second shed is wrapped around the second core rod, the second top end hardware is arranged at the top end of the first oblique-stayed insulator, the second top end hardware is connected to the first wire clamp, and the second bottom end hardware is arranged at the bottom end of the first oblique-stayed insulator and connected to the first steel cable.

4. The device for preventing additional conductor dancing of an electrified railway overhead contact network according to claim 1, characterized in that: The second oblique-stayed insulator comprises: a third shed, a third core rod, a third top fitting, and a third bottom fitting; Among them, the third umbrella skirt is made of silicone rubber material, the third core rod is made of glass fiber material, the third umbrella skirt is wrapped on the third core rod, the third top end hardware is arranged at the top end of the second oblique insulator, the third top end hardware is connected to the second wire clamp, and the third bottom end hardware is arranged at the bottom end of the second oblique insulator and connected to the second steel cable.

5. The device for preventing additional conductor dancing of an electrified railway overhead contact network according to claim 1, characterized in that: It also includes a base, which is fixed on the ground or the side wall, and the first steel cable and the second steel cable are connected to the base.

6. The device for preventing additional conductor dancing of an electrified railway overhead contact network according to claim 5, characterized in that: The base comprises: a mounting plate, a vertical plate, fixing bolts and an axle pin; Among them, the fixing bolt passes through the mounting plate and is fixed on the ground or the side wall. There are two vertical plates, which are arranged in parallel on the mounting plate. There are two axle pins, which pass through the two vertical plates. The first steel cable and the second steel cable are respectively connected to the two axle pins.

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