CN216129899U - Insulating buffer pad for preventing track stray current - Google Patents

Abstract

The utility model discloses an insulating buffer pad for preventing track stray current, which is arranged between a track bed board and a track base and is used for preventing the stray current from being transmitted to the track base along the track bed board, and the insulating buffer pad has an antifouling structure for preventing external dirt from permeating between the track bed board and the track base. The insulating buffer cushion is provided with an insulating layer and a puncture-resistant layer which are sequentially attached to the track bed board and the side wall of the track base, and a damping layer is arranged between the insulating layer and the puncture-resistant layer. Insulating blotter with railway roadbed board bottom surface and side parcel, its on the basis to the buffering of railway roadbed board, realize the cushioning effect to railway roadbed and rail and subsidiary spare to carry out effectual insulation treatment between the part more than the railway roadbed board and the track base, avoid stray current to propagate the drawback of going in ground and the surrounding environment. The anti-fouling structure avoids the defect that the stray current is spread by communicating the steel rail with the foundation because dirt enters between the track bed plate and the track base.

Description

Insulating buffer pad for preventing track stray current

Technical Field

The utility model relates to the technical field of stray current prevention and damping, in particular to an insulating buffer pad for preventing track stray current.

Background

For the special operation characteristics of urban rail transit, subway traction generally supplies power in a direct current mode. While insulation considerations have been made in the prior art rail designs for the fastener system supporting the rail, complete insulation from ground has not been achieved. When traction current flows through the steel rail, a potential difference is formed between the steel rail and the ground, so that part of the traction current enters the ground, and electrochemical corrosion is generated on part of metal components around the rail. Due to the continuous promotion of the urbanization process in China, the scale of cities is continuously increased, water supply pipelines and air supply pipelines closely related to the lives of residents are also continuously increased, subways become the first choice of large and medium cities for improving the urban traffic conditions, and the number of subways is also continuously increased. The influence of subway stray current on nearby pipelines is increasingly serious as a result of the synchronous increase of the buried pipelines and subway lines, and the structural damage caused by the stray current is increasingly serious.

Because the problem of stray current of the direct current power supply system is difficult to be fundamentally treated, blocking the propagation path of the stray current is an effective measure for reducing the influence of the stray current. At present, in the design process of the existing damping pad product, only the damping and noise reduction requirements of special road sections in a circuit are considered, and the problem of restraining stray current is not deeply considered at the same time. The utility model aims to provide an insulating vibration damping pad for rail transit, which aims to solve the problems of vibration damping, noise reduction and stray current prevention of a line.

Disclosure of Invention

In view of the above problems, the present invention is directed to provide an insulating buffer pad for preventing track stray current, which achieves a buffering effect on a track bed, a steel rail and accessories based on a buffer of a track bed plate, and effectively insulates between components above the track bed plate and a track base, thereby avoiding the disadvantage that stray current is spread to a foundation and the surrounding environment.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an prevent track stray current's insulating blotter, insulating blotter sets up between railway bed board and track base for stop stray current and transmit to the track base along railway bed board on, and insulating blotter has and prevents that outside filth from permeating to antifouling structure between railway bed board and the track base.

Preferably, the insulating buffer pad is higher than the surfaces of the track bed plate and the track base, is provided with an insulating layer and a puncture-resistant layer which are sequentially attached to the side walls of the track bed plate and the track base, and is provided with a damping layer between the insulating layer and the puncture-resistant layer.

Preferably, the antifouling structure is an antifouling part which horizontally extends from two side walls of the insulating buffer pad to two sides and is sequentially attached to the surfaces of the track bed plate and the track base.

Preferably, the dirt prevention portion includes a seal contact surface that is in close contact with the track bed plate and the surface of the rail base, and a first inclined surface and a second inclined surface.

Preferably, the part of the puncture-resistant layer, which exceeds the surface of the rail base, is provided with creepage bulges at upward intervals for increasing creepage distance of stray current.

Preferably, the top end of the puncture-resistant layer is provided with an antifouling bulge horizontally exceeding the creepage bulge, and the antifouling bulge consists of a third inclined plane connected with the top end of the puncture-resistant layer, and a fourth inclined plane and a fifth inclined plane which are sequentially connected with the third inclined plane.

The utility model has the beneficial effects that: insulating blotter with railway roadbed board bottom surface and side parcel, its on the basis to the buffering of railway roadbed board, realize the cushioning effect to railway roadbed and rail and subsidiary piece (like rail fastener etc.) to carry out effectual insulation treatment between the part above the railway roadbed board and the track base, avoid stray current to propagate to the drawback of going in ground and the surrounding environment. The anti-fouling structure avoids the defect that the stray current is spread by communicating the steel rail with the foundation because dirt enters between the track bed plate and the track base.

Drawings

Fig. 1 is a perspective view illustrating the installation of the insulating bumper of the present invention.

Fig. 2 is a front view of fig. 1 of the present invention.

Fig. 3 is an overall view of the insulating buffer pad of the present invention.

FIG. 4 is an enlarged view of FIG. 2A of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.

Referring to fig. 1-4, the insulating buffer pad for preventing track stray current is shown, the insulating buffer pad 1 is disposed between the track bed board 10 and the track base 20, and is used for preventing stray current from being transmitted to the track base 20 along the track bed board 10, and the insulating buffer pad 1 has an anti-fouling structure for preventing external dirt from infiltrating between the track bed board 10 and the track base 20. Preferably, the insulating buffer pad 1 wraps the bottom and side surfaces of the ballast bed plate 10. The insulating buffer pad 1 achieves the buffer effect on the steel rail (30 in the figure) and the accessory (such as a steel rail fastener) on the basis of buffering the track bed slab 10. And carry out effectual insulation treatment between track base 20 to the part above the ballast bed board 2, avoid stray current to spread the drawback in ground and its surrounding environment. The anti-fouling structure is to prevent the dirt from entering between the track bed board 2 and the track base 20, and to conduct the steel rail and the foundation to spread the stray current.

Specifically, insulating blotter 1 is higher than railway roadbed board 10 and track base 20 surface, the creepage distance of the stray current that the purpose exists between the two is increased to increase surface resistance between the two, and then reduce stray current's propagation, and carry out effectual antifouling insulating action to rail fastener and rail simultaneously. The insulating buffer pad 1 has an insulating layer 11 and a puncture-resistant layer 12 which are sequentially closely attached to the side walls of the track bed plate 10 and the track base 20, and a vibration damping layer 13 is provided between the insulating layer 11 and the puncture-resistant layer 12. The insulating layer 11 (preferably made of an elastic material with good insulating property, such as a rubber material) improves the resistance between the track slab 10 and the track base 20 through its high insulating property, effectively blocks the stray current of the steel rail, and stops the current flow transmitted to the track base 20 and the foundation as much as possible. The damping layer 13, preferably of an elastomeric material with reinforcing fibrous material therein, such as a rubber material, provides support and damping for the track bed, rails and accessories on the track bed 10. The puncture-resistant layer 12 (preferably made of a material with certain elasticity and good wear resistance, such as a two-dimensional woven material) provides puncture-resistant and fatigue-resistant effects for the insulating layer 11 and the damping layer 13, and also provides good friction-resistant effects for the mutual friction between the track bed plate 10 and the track base 20, thereby ensuring that the insulating buffer pad 1 has a long service life.

Specifically, the antifouling structure is an antifouling part 14 which horizontally extends from both side walls of the insulating buffer pad 1 to both sides and is sequentially attached to the surfaces of the track slab 10 and the track base 20. The contact gap between the insulating buffer pad 1 and the track bed plate 10 and the track base 20 is effectively blocked by the antifouling part 14, so that the phenomenon that the dirt enters from the gap to increase the conduction of stray current is avoided, and the corrosion problem of the dirt to the insulating layer 11 and the puncture-resistant layer 12 is avoided. Preferably, the dirt preventive portion 14 is attached to the surface of the track bed 10 and the surface of the rail base 20 by bonding.

In order to further enhance the sealing effect of the antifouling part 14 on the contact gap between the insulating cushion pad 1 and the track bed 10 and the track base 20, as shown in fig. 2 to 4, the antifouling part 14 is composed of a sealing contact surface 14a closely contacting the surfaces of the track bed 10 and the track base 20, and a first inclined surface 14b and a second inclined surface 14 c. The sealing contact surface 14a is hermetically bonded to the surfaces of the track bed plate 10 and the track base 20, respectively, to prevent the entry of dirt. When rainwater and other contaminants flow from the top of the insulating buffer pad 1, along the side walls of the insulating layer 11 and the puncture-resistant layer 12, down to the first inclined surface 14b, along the first inclined surface 14b, to the second inclined surface 14c, and finally to the surfaces of the road bed board 10 and the rail base 20, respectively.

In order to further reduce the propagation flow of the stray current, creepage bulges 15 for increasing the creepage distance of the stray current are arranged at the upward distance of the part of the puncture-resistant layer 12 beyond the surface of the track base 20. Increase stray current's conduction distance through these a plurality of creepage bulges 15, and then increase on-resistance, its propagation flow that switches on of effectual reduction reduces stray current's influence.

Further in order to stop the effect of spreading that switches on of the circulating stray current that the filth got into, resistant puncture layer 12 top is equipped with the level and surpasss the antifouling arch 16 of climbing electric arch 15, it can directly discharge the filth in the protruding 15 outside of climbing electric, play antifouling, hydrophobic and oleophobic effect to directly fall into track base 20 surface outflow (preferred, antifouling protruding 16 is surpassed antifouling portion 14 outside equally), so that the filth can not follow resistant puncture layer 12 lateral wall and flow down, reduce the effect of gathering of stopping at its and insulating buffer 1 contact gap department. Therefore, the outer side face can be kept clean for a long time, and the accumulation of dirt on the surface of the outer side face is reduced, so that the surface is kept in a high-insulation state for a long time.

The stain-proofing protrusion 16 is composed of a third inclined surface 16a connected to the tip end of the puncture-resistant layer 12, and a fourth inclined surface 16b and a fifth inclined surface 16c connected to the third inclined surface 16a in this order. The dirt flows along the third inclined surface 16a and the fourth inclined surface 16b to the surface of the rail base 20 and then flows out, and the fifth inclined surface 16c prevents the dirt from flowing back at the bottom end of the fourth inclined surface 16 b.

The principle of the utility model is as follows: insulating blotter with railway roadbed board bottom surface and side parcel, its on the basis to the buffering of railway roadbed board, realize the cushioning effect to railway roadbed and rail and subsidiary piece (like rail fastener etc.) to carry out effectual insulation treatment between the part above the railway roadbed board and the track base, avoid stray current to propagate to the drawback of going in ground and the surrounding environment. The anti-fouling structure avoids the defect that the stray current is spread by communicating the steel rail with the foundation because dirt enters between the track bed plate and the track base.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. An insulating buffer pad for preventing track stray current, characterized in that: insulating blotter (1) sets up between railway roadbed board (10) and track base (20) for stop stray current and transmit to track base (20) along railway roadbed board (10) on, and insulating blotter (1) has prevents that outside filth from permeating to antifouling structure between railway roadbed board (10) and track base (20).

2. The insulating buffer pad for preventing track stray current as claimed in claim 1, wherein: the insulating buffer cushion (1) is higher than the surfaces of the track bed plate (10) and the track base (20), is provided with an insulating layer (11) and a puncture-resistant layer (12) which are sequentially attached to the side walls of the track bed plate (10) and the track base (20), and is provided with a damping layer (13) between the insulating layer (11) and the puncture-resistant layer (12).

3. The insulating buffer pad for preventing track stray current as claimed in claim 2, wherein: the antifouling structure is an antifouling part (14) which extends horizontally from two side walls of the insulating buffer pad (1) to two sides and is sequentially attached to the surfaces of the track bed plate (10) and the track base (20).

4. An insulating buffer pad for preventing track stray current as claimed in claim 3, wherein: the antifouling part (14) is composed of a sealing contact surface (14a) which is in close contact with the surfaces of the track bed plate (10) and the track base (20), and a first inclined surface (14b) and a second inclined surface (14 c).

5. The insulating buffer pad for preventing track stray current as claimed in claim 4, wherein: creepage bulges (15) for increasing creepage distance of stray current are arranged at upward intervals on the part of the puncture-resistant layer (12) exceeding the surface of the track base (20).

6. The insulating buffer pad for preventing track stray current as claimed in claim 5, wherein: and an antifouling bulge (16) horizontally exceeding the creepage bulge (15) is arranged at the top end of the puncture-resistant layer (12) and consists of a third inclined plane (16a) connected with the top end of the puncture-resistant layer (12), and a fourth inclined plane (16b) and a fifth inclined plane (16c) which are sequentially connected with the third inclined plane (16 a).

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