CN114293407A - Stray current prevention system under fastener plate - Google Patents
Stray current prevention system under fastener plate Download PDFInfo
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- CN114293407A CN114293407A CN202210070225.9A CN202210070225A CN114293407A CN 114293407 A CN114293407 A CN 114293407A CN 202210070225 A CN202210070225 A CN 202210070225A CN 114293407 A CN114293407 A CN 114293407A
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Abstract
The invention discloses a stray current prevention system under a fastener plate, which increases the creepage distance of a fastener system by insulating and blocking the lower part of a fastener and sealing the gap at the upper part, reduces the accumulation of surface pollutants and prevents an internal conductive passage from being penetrated by pollutants such as dust, oil water and the like, so that the fastener system has good insulating property after being used for a long time. In the invention, the lower insulation plate with good insulation performance is arranged below the iron base plate to realize the electrical isolation between the iron part at the upper part of the fastener and the ballast bed, and the insulation paint with good insulation performance and elasticity is sprayed on the surface of the fastener to realize the filling and sealing of gaps of parts at the upper part of the fastener, thereby preventing the overall insulation performance of the fastener from being reduced due to long-term use. The scheme is basically consistent with the installation of the existing common fastener, no additional process is added, and any adjustment and adjustment of the subsequent steel rail can not obviously influence the steel rail, so that the steel rail fastener is suitable for large-batch construction.
Description
Technical Field
The invention relates to the field of power supply and stray current prevention and control of rail engineering, in particular to a stray current prevention system under a fastener plate.
Background
In subway engineering, because of the restriction of a direct current power supply mode and an installation mode that a steel rail is usually fixed with a track bed only at a fastener, direct current generated in the running process of a train is inevitably leaked to the surrounding environment due to the fact that the fastener cannot be completely insulated from the ground, particularly, the situations of damage, pollution and the like of the fastener are more serious along with the longer operation life, the insulation performance of the fastener is continuously deteriorated, and the current (stray current) leaked to the surrounding environment from the fastener is more and more increased.
With the progress of urbanization, the scale of cities and municipal construction are developing, which requires more infrastructure such as gas, water and oil pipelines, underground structures, etc. in limited urban spaces, which contain a large amount of metal materials. The current leakage generated in the operation process of the rail transit can cause serious electrochemical corrosion of metal materials in the structure, and after long-term use, the safety risks of pipeline damage, structural damage instability and the like exist.
To the problem that above-mentioned exists, through the investigation, this patent has proposed a fastener board prevents stray current system down, has obtained a simple structure, the fastener of insulating properties excellence prevents stray current system.
Disclosure of Invention
In view of the above problems, the present invention is directed to provide a system for preventing stray current under a fastener plate, which increases creepage distance of the fastener system by insulating and blocking the lower portion of the fastener and sealing the gap at the upper portion, reduces surface pollutant accumulation, and prevents an internal conductive path from being penetrated by pollutants such as dust, oil and water, so that the fastener system has good insulating properties after long-term use.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a prevent stray current system under fastener board, includes the sleeper, increases backing plate and fastener iron tie plate, wears to be equipped with spike bolt fastening, its characterized in that simultaneously between this three: heightening base plate with be provided with between the fastener iron tie plate with both insulating separated insulator arrangement the sleeper with heightening between the base plate, heightening all is provided with insulating part between base plate and the fastener iron tie plate to all spraying have deformable's sealing insulation layer in above-mentioned all parts department of meeting.
Preferably, the insulation device is a lower insulation plate tightly attached to the bottom surface of the fastener iron base plate and between the fastener iron base plate and the corresponding insulation component, an insulation side plate vertically surrounds the periphery of the lower insulation plate in a closed mode, and the edge of the lower insulation plate extends outwards along the circumferential direction to form a lower insulation plate extending out of the lower insulation plate.
Preferably, the surface of the lower plate insulating plate matched with the spike bolt is vertically provided with an insulating positioning cylinder body which extends to the top and the bottom of the lower plate insulating plate by a certain height.
Preferably, the top side and the bottom side of the inner wall of the insulating positioning cylinder are embedded with insulating positioning rings tightly attached to the outer wall of the spike bolt.
Preferably, the insulating part is a plate bottom expansion sealing ring tightly attached to the surfaces of the sleeper and the heightening base plate and the surfaces of the heightening base plate and the fastener iron base plate, and the plate bottom expansion sealing ring is sleeved on the periphery of the spike bolt.
The invention has the beneficial effects that:
1. in the aspect of installation, the system can be integrally assembled with the fastener, the positioning of the system is consistent with that of the fastener, the system cannot be changed due to the adjustment of the position of the steel rail, and the system is convenient for large-scale use;
2. the installation of the system utilizes the spike bolt and the fastener iron backing plate for fixing, and the pretreatment such as polishing, oil removal and the like is not needed for the steel rail, so that the construction time is greatly saved, the construction efficiency can be obviously improved, and the large-scale use is convenient;
3. the system is arranged below the bottom surface of the steel rail, and cannot influence other operations on the steel rail and flaw detection of a steel rail welding seam in the construction process;
4. the system is positioned below the fastener iron base plate, the contact state of the steel rail and the rail lower base plate of the original fastener system is not changed, and the performance of the original fastener is not influenced; the installation and the removal are both convenient, and the device is particularly suitable for the existing line reconstruction project;
5. the system is provided with an insulation positioning cylinder body in the middle of the lower insulation board corresponding to the periphery of the fastener iron base plate to surround, so that the purpose of increasing the creepage distance of the system is realized, and meanwhile, the system can be used for limiting the relative sliding between the lower insulation board and the fastener iron base plate, and the phenomenon that the lower insulation board is excessively worn due to excessive sliding to influence the service life is avoided;
6. this patent utilizes under insulating coating and the board inflation sealing ring to realize the insulating of lower part respectively on the fastener and sealed, has improved rail system's insulating properties.
Drawings
Fig. 1 is a view showing an assembly structure of an insulating device according to the present invention.
FIG. 2 is a partial cross-sectional view of FIG. 1 in accordance with the present invention.
Fig. 3 is a partial front view of fig. 2 of the present invention.
Fig. 4 is a cross-sectional view of the lower insulating plate 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 system for preventing stray current under a fastener plate comprises a sleeper 10, a heightening base plate 20 and a fastener iron base plate 30, and spike bolts 40 are arranged among the sleeper 10, the heightening base plate 20 and the fastener iron base plate for fastening. As shown in fig. 1-2, an insulating device for insulating and separating the heightening base plate 20 and the fastener iron base plate 30 is arranged between the heightening base plate 20 and the fastener iron base plate 30, insulating members are arranged between the sleeper 10 and the heightening base plate 20 and between the heightening base plate 20 and the fastener iron base plate 30, and deformable sealing insulating layers are sprayed on the joints of all the members. The insulation device is assembled between the heightening base plate 20 and the fastener iron base plate 30, and realizes the electrical isolation between the fasteners and parts on the upper part of the fastener iron base plate 30 and the track bed. The insulating part is used for insulating and sealing the space between the sleeper 10 and the heightening base plate 20 and the space between the heightening base plate 20 and the fastener iron base plate 30, so that the sealing effect of the insulating device after the rail parts are separated is further improved.
The sealing insulating layer is preferably made of insulating paint with good insulating property and elasticity (such as long-acting room temperature vulcanized silicone rubber insulating paint), and is sprayed on the surface of the fastener to fill and seal gaps of parts on the upper part of the fastener. The sealing insulating layer has good hydrophobic and oleophobic capabilities and low dust adsorption capability, and can ensure surface cleanness under long-term use conditions.
The installation of insulator arrangement and current general fastener is unanimous basically, does not increase extra process, and is not high to site operation personnel's skill and physical demands, and any adjustment of follow-up rail can not produce obvious influence to it, is suitable for construction in batches. Meanwhile, the system is arranged at the lower part of the steel rail, so that the subsequent steel rail flaw detection work is not influenced.
Specifically, as shown in fig. 1 to 4, the insulating device is a lower insulating plate 1 tightly attached between the bottom surface of the fastener iron backing plate 30 and the corresponding insulating component, the periphery of the lower insulating plate 1 is vertically enclosed and surrounded by insulating side plates 11, and the edge of the lower insulating plate 1 extends outwards along the circumferential direction to form a lower insulating plate 12. Insulation board 1 realizes under the board to heighten backing plate 20 with on the insulating basis between the fastener iron backing plate 30, through insulating curb plate 11 and stretch out the whole length increase fastener system creepage distance of insulation board 12 under the board, reduce the surface pollutant and pile up and prevent that inside conductive path from by the effect that pollutants such as dust, profit link up, and then make the long-term use of fastener system have good insulating properties, reduce the stray current who reveals the ground, reduce the electrochemical corrosion effect of the metal material around the stray current by a wide margin.
Preferably, the insulating side plate 11 can be set to be an inclined plane structure inclined to the outside, so that the top height of the insulating side plate 11 is reduced on the basis of ensuring that the insulating side plate has an effective creepage distance, and further, the capacity of oil stain accumulated on the surface of the insulating plate 1 below the plate is reduced.
In order to realize the sealing function between the lower insulating plate 1 and the spike bolt 40, as shown in fig. 2-3, an insulating positioning cylinder 13 extending to a certain height from the top and the bottom of the lower insulating plate 1 is vertically arranged on the surface of the lower insulating plate 1 which is matched with the spike bolt 40. Its cooperation spike bolt 40 wear to establish, a pollutant isolation function for realizing the upper surface of fastener iron tie plate 30, prevent by the pollutant of fastener iron tie plate 30 upper surface accumulation by fastener iron tie plate 30 on along spike bolt 40 downstream to the railway roadbed, form a conducting path's drawback, make the flow of filth insulation board 1 surface to its side sleeper department under the board receive the restriction, the purpose of increase system creepage distance has been realized, can be used to restrict the relative slip between the two simultaneously, and be used for preventing the profit on upper portion, pollutants such as dust move the stroke and conducting path's drawback to the lower part. In the process of system assembly, the sealing insulating layer is sprayed in the fit clearance between the spike bolt 40 and the upper end and the lower end of the insulating positioning cylinder 13, so that the sealing insulating function between the spike bolt and the insulating positioning cylinder is realized.
As shown in fig. 4, in order to improve the assembly accuracy of the lower insulating plate 1 and the spike bolt 40 after being engaged, the insulating positioning rings 2 tightly attached to the outer wall of the spike bolt 40 are embedded in the top and bottom sides of the inner wall of the insulating positioning cylinder 13. Through the contact of the upper and lower both sides of this insulating holding ring 2 and spike bolt 40, improve the board under insulation board 1 and spike bolt 40's cooperation precision, realize the location assembly of board under insulation board 1 to improve its insulating sealed effect.
As shown in fig. 2-3, the insulating component is a plate bottom expansion seal ring 3 tightly attached to the surfaces of the sleeper 10 and the heightening base plate 20, and the surfaces of the heightening base plate 20 and the fastener iron base plate 30, and the plate bottom expansion seal ring 3 is annularly sleeved on the periphery of the spike bolt 40. Preferably, the plate bottom expansion sealing ring 3 is made of a material with good elasticity and water-swelling function. Before the fastener is installed, the plate bottom expansion sealing ring 3 is installed at a corresponding position by means of pasting and the like.
The principle of the invention is as follows: during on-site construction, the plate bottom expansion sealing rings 3 which do not expand are respectively fixed between the sleeper 10 and the surface of the heightening base plate 20 and between the heightening base plate 20 and the surface of the fastener iron base plate 30.
When assembling the fastener, put into the upper surface of insulation board 1 under the board with fastener iron tie plate 30 to guarantee that the cooperation of insulating location barrel 13 and fastener iron tie plate 30 is good, must not produce the interference between the two, prevent that the thin wall structure of insulating location barrel 13 from damaging the whole antifouling ability of insulation board 1 under the board because of the circumstances such as extrusion. Preferably, the under-board insulation plate 1 may also be mounted on the lower surface of the heightening mat 20.
Because the lower insulating plate 1 is assembled with the plate bottom expansion sealing ring 3 before the delivery of the rail panel, the lower insulating plate can be directly placed on the sleeper when the rail panel is assembled and erected, and is fixed on the sleeper 10 through the spike bolt 40, and the lower insulating plate 1 and the sleeper 10 are sealed by extruding and deforming the plate bottom expansion sealing ring 3 through the pretightening force of the spike bolt 40.
When the height of the track structure needs to be adjusted and a heightening base plate needs to be used, the plate bottom expansion sealing ring 3 is arranged around the corresponding spike bolt 40 of the heightening base plate 20 which needs to be used in advance, and the using effect and the principle of the method are the same as those of the method used for the plate lower insulating plate 1.
After the fastener is completely installed, the upper surface of the fastener can be sprayed with insulating paint on a track laying base or on site. In the spraying process, the joint seams between the spike bolt 40 and the elastic washer, the flat washer and the iron backing plate need to be sprayed in an important mode, and poor sealing is prevented.
Through the technical scheme, make the insulation system structure insulating properties that prevents stray current system and propose under the fastener board more excellent, and its installation is decided according to the position of fastener, can not take place the unmatched problem with the fastener position because of the change of rail position, the installation when can realizing the section of track group frame, the time of saving the job site installation, and can reduce the installation degree of difficulty, and lay the efficiency of construction and do not have obvious influence to original rail, be particularly suitable for the transformation engineering of operation line, can not influence normal operation.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. 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 invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a prevent stray current system under fastener board, includes sleeper (10), heightening backing plate (20) and fastener iron tie plate (30), wears to be equipped with spike bolt (40) fastening, its characterized in that simultaneously between these three: heightening base plate (20) and be provided with between fastener iron tie plate (30) with both insulating isolated insulator arrangement between sleeper (10) and heightening base plate (20), heightening base plate (20) and fastener iron tie plate (30) all are provided with insulating part to all spray the sealed insulating layer of deformability in the department that meets of above-mentioned all parts.
2. The under-fastener-plate stray current prevention system of claim 1, wherein: the insulating device is tightly attached to the bottom surface of the fastener iron base plate (30) and corresponds to the lower insulating plate (1) between the insulating parts, an insulating side plate (11) is vertically enclosed and surrounded on the periphery of the lower insulating plate (1), and the edge of the lower insulating plate (1) extends outwards along the circumferential direction to extend out of the lower insulating plate (12).
3. The under-fastener-plate stray current prevention system of claim 2, wherein: and an insulating positioning cylinder (13) which extends to the top and the bottom of the lower insulating plate (1) by a certain height is vertically arranged on the surface of the lower insulating plate (1) matched with the spike bolt (40).
4. The under-fastener-plate stray current prevention system of claim 3, wherein: and the top side and the bottom side of the inner wall of the insulating positioning cylinder body (13) are embedded with insulating positioning rings (2) tightly attached to the outer wall of the spike bolt (40).
5. The under-fastener-plate stray current prevention system of claim 4, wherein: the insulating part is a plate bottom expansion sealing ring (3) tightly attached to the surfaces of a sleeper (10) and a heightening base plate (20) and the surfaces of the heightening base plate (20) and a fastener iron base plate (30), and the plate bottom expansion sealing ring (3) is sleeved on the periphery of a spike bolt (40) in an all-around mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210070225.9A CN114293407A (en) | 2022-01-21 | 2022-01-21 | Stray current prevention system under fastener plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210070225.9A CN114293407A (en) | 2022-01-21 | 2022-01-21 | Stray current prevention system under fastener plate |
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| Publication Number | Publication Date |
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| CN114293407A true CN114293407A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210070225.9A Pending CN114293407A (en) | 2022-01-21 | 2022-01-21 | Stray current prevention system under fastener plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110349A (en) * | 2022-06-23 | 2022-09-27 | 北京首铁创联科技有限责任公司 | Steel rail stray current protection system |
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2022
- 2022-01-21 CN CN202210070225.9A patent/CN114293407A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110349A (en) * | 2022-06-23 | 2022-09-27 | 北京首铁创联科技有限责任公司 | Steel rail stray current protection system |
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