CN219886458U - Isolation boot for insulating and isolating steel rail - Google Patents
Isolation boot for insulating and isolating steel rail Download PDFInfo
- Publication number
- CN219886458U CN219886458U CN202320684574.XU CN202320684574U CN219886458U CN 219886458 U CN219886458 U CN 219886458U CN 202320684574 U CN202320684574 U CN 202320684574U CN 219886458 U CN219886458 U CN 219886458U
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- Prior art keywords
- insulation
- isolation
- rail
- insulating
- gauge block
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- 238000002955 isolation Methods 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 22
- 125000006850 spacer group Chemical group 0.000 description 9
- 230000009467 reduction Effects 0.000 description 6
- 101100495256 Caenorhabditis elegans mat-3 gene Proteins 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model discloses an isolation boot for insulating and isolating steel rails, which belongs to the field of urban rail insulation and comprises an isolation boot body, wherein the isolation boot body is provided with a first hollowed-out part, and the first hollowed-out part is positioned at a contact part with an insulating gauge block; the isolation boot body is provided with a plurality of continuous elastic bulges along the length upper direction, and the elastic bulges are positioned between the insulation gauge block and the steel rail and are matched with the insulation gauge block to form a prepressing type seal. According to the utility model, the creepage distance between the fastener and the steel rail is increased on the premise of not changing the constraint force of the existing fastener on the steel rail, so that the insulation performance of the fastener system is effectively improved; and the method has low cost and simple implementation, and can be used for newly-built circuits and existing line transformation.
Description
Technical Field
The utility model belongs to the field of urban rail insulation, and particularly relates to an isolation boot for rail insulation isolation.
Background
For the existing wheel rail system for traction power supply by direct current, the running rail is used as a return line to be connected with the negative electrode of the substation, the running rail is connected with the track bed plate in a mode of being supported by the fastener, the fastener cannot be completely insulated due to pollution in the later use process, partial current flows out of the track bed, and then the current flows into the surrounding environment of the track to cause electric corrosion.
According to a large amount of measured data, the transition resistance value of the steel rail to the ground in part of the lines is far less than 15 Ω & km (scheme III) required by the technical Standard for protection against stray currents of subways (CJJ/T49-2020), and even more extreme lines are less than 1 Ω & km, so that the insulation performance of the lines is almost completely lost. The improvement of these cases includes two aspects, the introduction of measures to enhance the insulation of the track at the beginning of the design, and the research of replacement measures which are convenient to implement, on the other hand, for the already operated lines, must also be able to enhance the insulation properties of the track.
In the technical scheme of the patent, the full insulation fastener device can perform full insulation isolation on the steel rail, a backing plate and an insulation gauge block perform insulation isolation on the steel rail and the ground, the steel rail is completely wrapped and insulated by a steel rail insulation wrapping sleeve, so that ground water is prevented from being sputtered on the steel rail, meanwhile, the steel rail insulation wrapping sleeve has good insulation performance, the steel rail is physically separated from other parts, air, water and the like, current is not transmitted, the steel rail is completely insulated from a ballast bed, the full insulation purpose of the steel rail is achieved, the service life of the steel rail fastener is prolonged, and meanwhile, the reliability and the safety of the steel rail fastener in long-term use under severe working conditions are improved.
However, the technology fails to solve the problem of matching and sealing of the gauge block and the steel rail insulating wrap, and the design is that the gauge block and the steel rail insulating wrap are tightly pressed with each other; the gauge block is a movable stress component, so that the insulation package of the steel rail is extruded to cause sealing failure; in addition, he changes the stress relationship of the fastener: the original stress relation is that the gauge block directly buckles the steel rail, the patent is that the gauge block, the steel rail insulating wrap sleeve and the steel rail are mutually different in friction coefficient, so that the constraint force of the fastener on the steel rail is too small or too large; the later-stage rail insulation wrap sleeve is easy to cause the fastener to restrict the failure of the rail after being extruded and failed, so that potential safety hazards are brought.
Disclosure of Invention
In order to solve the problems, the utility model adopts the following technical scheme:
the isolation shoe comprises an isolation shoe body, wherein the isolation shoe body is provided with a first hollowed-out part, and the first hollowed-out part is positioned at a contact position with the insulation track gauge block; the isolation boot body is provided with a plurality of continuous elastic bulges along the length upper direction of the isolation boot body, and the elastic bulges are positioned between the insulation gauge block and the steel rail and are matched with the insulation gauge block to form a prepressing type seal.
Further, a second hollowed-out part is arranged at the center of the bottom of the isolation boot body.
Further, a plurality of uniformly arranged fastening pins are arranged on the circumference of the second hollowed-out part, a plurality of fastening holes are formed in the insulating base plate, and a plurality of fastening pins are correspondingly matched with the fastening holes.
Further, one side end part of the isolation boot body, which is far away from the second hollowed-out part, is provided with an umbrella-shaped waterproof eave.
Further, the two ends of the length direction of the isolation boot body are provided with snap spring mounting grooves along the width direction of the isolation boot body.
The beneficial effects are that:
the isolation boot for rail insulation isolation solves the problems in the prior art, increases the creepage distance between the fastener and the rail on the premise of not changing the constraint force of the existing fastener on the rail, and effectively improves the insulation performance of the fastener system; and the method has low cost and simple implementation, and can be used for newly-built circuits and existing line transformation.
Drawings
FIG. 1 is a schematic view of the mounting structure of the spacer boot of the present utility model;
fig. 2 is a partial enlarged view G in fig. 1;
FIG. 3 is a top view of the mounting structure of the spacer boot of the present utility model;
FIG. 4 is a schematic diagram of the mating installation of the spacer shoes, the insulation gauge blocks and the snap springs;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a cross-sectional view of C-C of FIG. 4;
FIG. 7 is a sectional view D-D of FIG. 4;
FIG. 8 is a front view of an insulation gage block;
FIG. 9 is a right side view of an insulating gage block;
FIG. 10 is a cross-sectional view E-E of FIG. 8;
FIG. 11 is a schematic view of an installation structure of an insulating mat;
FIG. 12 is a cross-sectional view F-F of FIG. 11;
FIG. 13 is a cross-sectional view H-H of FIG. 11;
FIG. 14 is a schematic view of an integrated insulating mat and spacer boot;
FIG. 15 is a schematic view of a snap connection of an insulating mat and a spacer boot;
FIG. 16 is a diagram of a snap spring mounting structure;
FIG. 17 is a schematic diagram of a snap spring structure;
1, a isolation boot body; 1-1, a first hollowed-out part; 1-2, elastic bulge; 1-3, a second hollowed-out part; 1-4, fastening pins; 1-5, a clamp spring mounting groove; 1-6, umbrella-shaped waterproof eave; 2. an insulating gauge block; 2-1, a buckling part; 2-1-1, a buckling block; 2-2, a sealing part; 3. an insulating backing plate; 3-1, an elastic vibration reduction part; 3-2, sealing the insulating part; 3-2-1, a precompressed sealing structure; 3-2-2, grooves; 3-2-3, fastening holes; 4. and (5) clamping springs.
Detailed Description
Example 1
Referring to fig. 1-17, a spacer shoe for insulating a rail is positioned between the rail and an insulating gauge block 2 and cooperates with an insulating spacer 3 and the insulating gauge block 2 to insulate the rail from a fastener.
The insulating base plate 3 is arranged below the steel rail, and the isolation boot is positioned at the upper end of the insulating base plate 3; the two ends of the isolation boot are fixed on the steel rail through the clamp springs 4; the insulating gauge blocks 2 are distributed on both sides of the rail.
In this embodiment, the isolation boot includes isolation boot body 1, and isolation boot body 1 is provided with first fretwork portion 1-1, and first fretwork portion 1-1 sets up in the department of contacting with insulating gauge piece 2, and insulating gauge piece 2 withhold on the rail through first fretwork portion 1-1 to guarantee the binding power of fastener to the rail.
The isolation boot body 1 is provided with a plurality of continuous elastic bulges 1-2 along the length direction, and the elastic bulges 1-2 are positioned between the insulation gauge block 2 and the steel rail and are matched with the insulation gauge block 2 to form a pre-pressing type seal.
The elastic bulges 1-2 of the isolation boot body 1 are a plurality of continuous lines arranged at intervals in the length direction, water is directly discharged out of the insulation gauge block 2 area through a water discharge groove formed between the lines, and therefore even under the condition of pre-pressing failure, pollutants still cannot enter the first hollowed-out portion 1-1 of the isolation boot, and insulation failure caused by the pollutants is avoided.
In order to better achieve an insulating seal between the insulation shoe body 1 and the insulation gage blocks 2, in this embodiment the insulation gage blocks 2 are further arranged.
The insulation track gauge block 2 comprises a sealing part 2-2 and a buckling part 2-1 which are integrally arranged, wherein the sealing part 2-2 is matched with an elastic bulge 1-2 corresponding to the first hollowed-out part 1-1 to form a prepressing type seal; one side of the buckling part 2-1 far away from the sealing part 2-2 is provided with a bending structure, and the end part of the bending structure is matched with the insulating base plate 3 to realize compression sealing between the insulating track gauge block 2 and the insulating base plate 3.
The insulating gauge block 2 is provided with sealing parts 2-2 except the bottoms of the insulating base plates 3 under the rails, the sealing parts 2-2 and the elastic bulges 1-2 of the isolation boots are sealed in a prepressing mode, the sealing parts 2-2 and the elastic bulges are in a near contact state before the insulating gauge block 2 is stressed, and the sealing parts are compressed and sealed after the insulating gauge block 2 is stressed.
In order to better achieve an insulating seal between the insulation shoe body 1 and the insulating mat 3, in the present embodiment the insulating mat 3 is further provided.
The insulating base plate 3 comprises an elastic vibration reduction part 3-1 and a sealing insulating part 3-2 which are integrally arranged, and the elastic vibration reduction part 3-1 is embedded into the first hollowed-out part 1-1 of the isolation boot and is in direct contact with the steel rail; the sealing insulation part 3-2 is matched with the end part of the bending structure to realize compression sealing between the insulation track gauge block 2 and the insulation backing plate 3.
More specifically, the insulating base plate 3 arranged under the rail is divided into an elastic vibration reduction part 3-1 and a sealing insulating part 3-2, wherein the elastic vibration reduction part 3-1 is embedded into the second hollowed part 1-3 of the isolation boot to be in direct contact with the rail, so that the contact surface of the fastener and the rail is ensured not to be changed.
In this embodiment, a second hollowed-out portion 1-3 is provided at the bottom center of the isolation boot body 1.
In this embodiment, a plurality of uniformly arranged fastening pins 1-4 are circumferentially arranged on the second hollow portion 1-3, a plurality of fastening holes 3-2-3 are arranged on the insulating pad 3, the plurality of fastening pins 1-4 and the plurality of fastening holes 3-2-3 are correspondingly matched and arranged, sealing glue is assisted to fasten the under-rail insulating pad 3 and the isolation boot into a whole, and the installation step can be completed in a factory.
More specifically, the second hollowed-out portion 1-3 is disposed at the bottom center of the isolation boot body 1, a plurality of uniformly disposed fastening pins 1-4 are disposed in the circumferential direction of the second hollowed-out portion 1-3, a plurality of fastening holes 3-2-3 are disposed on the sealing insulation portion, and the plurality of fastening pins 1-4 are correspondingly matched with the plurality of fastening holes 3-2-3, that is, the fastening pins 1-4 are inserted into the fastening holes 3-2-3 to fasten the insulation pad 3 and the isolation boot into a whole, referring to fig. 15.
In other embodiments, the spacer shoes are integrally formed with the insulating mat 3 to ensure production and construction efficiency.
In other embodiments, the spacer shoe is adhesively attached to the insulating mat 3.
In this embodiment, an end of the isolation boot body 1 on one side far away from the second hollowed-out portion is provided with an umbrella-shaped waterproof eave 1-6, and the umbrella-shaped waterproof eave 1-6 extends to one side far away from the steel rail.
When the insulating gauge block is installed, the end part of the sealing part 2-2, which is far away from the buckling part 2-1, is abutted against the umbrella-shaped waterproof eave 1-6, and supports the umbrella-shaped waterproof eave 1-6 together with the top of the clamp spring 4.
The umbrella-shaped waterproof eave 1-6 on the upper portion of the isolation boot is used for guaranteeing that the waterproof eave 1-6 cannot collapse in the using process, and the top of the sealing portion 2-2 of the insulation gauge block 2 and the top of the clamp spring 4 support the umbrella-shaped waterproof eave 1-6.
In the embodiment, the two ends of the length direction of the isolation boot body are provided with snap spring mounting grooves 1-5 which are arranged along the width of the isolation boot body.
Specifically, after the insulating base plate 3, the isolation boot and the insulating gauge block 2 are installed, the clamp spring 4 is installed in the clamp spring installation groove 1-5, and the clamp spring 4 is integrally fixed.
In this embodiment, a groove 3-2-2 is provided at the position where the insulating pad 3 is engaged with the end portion of the bent structure, and the groove 3-2-2 is provided along the width direction of the insulating pad 3 and is located at a side of the insulating pad 3 away from the rail.
The buckling part 2-1 is a buckling block 2-1-1, and the buckling block 2-1-1 has a bending structure.
By designing the grooves 3-2-2 with different sizes and shapes, the precompression of the bottom of the insulation gauge block 2 and the insulation backing plate 3 under the rail can be adjusted to form a precompression type sealing structure 3-2-1 so as to ensure that the insulation backing plate 3 under the rail cannot be extruded and failed.
Because the whole set of system relies on buckling of jump ring and fastener self to fix, all spare parts all can be changed when damaging appears, change convenient and fast.
Meanwhile, insulation upgrading can be completed by only replacing the gauge block and the rail pad plate of the original fastener on the existing line, so that the replacement cost is low and the implementation is strong.
In the embodiment, in order to ensure the vibration reduction effect, the hardness of the adopted elastomer is recommended to be 55-75 Shore A; the hardness of the adopted elastomer is recommended to be 70-80 Shore A for ensuring the supporting strength of the isolation boot.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.
Claims (5)
1. The isolation shoe is positioned between the steel rail and the insulation gauge block, is matched with the insulation backing plate and the insulation gauge block, and is used for insulating and isolating the steel rail from the fastener, and is characterized by comprising an isolation shoe body, wherein the isolation shoe body is provided with a first hollowed-out part, and the first hollowed-out part is positioned at a contact position with the insulation gauge block; the isolation boot body is provided with a plurality of continuous elastic bulges along the length upper direction of the isolation boot body, and the elastic bulges are positioned between the insulation gauge block and the steel rail and are matched with the insulation gauge block to form a prepressing type seal.
2. The isolation boot for rail insulation according to claim 1, wherein a second hollowed-out portion is arranged at the bottom center of the isolation boot body.
3. The isolation boot for rail insulation according to claim 2, wherein a plurality of uniformly arranged fastening pins are arranged in the circumferential direction of the second hollowed-out portion, a plurality of fastening holes are formed in the insulation backing plate, and a plurality of fastening pins are correspondingly matched with the fastening holes.
4. The isolation boot for rail insulation according to claim 2, wherein an end part of one side of the isolation boot body, which is far away from the second hollowed-out part, is provided with a umbrella-shaped waterproof eave.
5. The shoe for rail insulation according to claim 1, wherein both ends of the shoe body in the length direction are provided with clip spring mounting grooves provided along the width direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320684574.XU CN219886458U (en) | 2023-03-31 | 2023-03-31 | Isolation boot for insulating and isolating steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320684574.XU CN219886458U (en) | 2023-03-31 | 2023-03-31 | Isolation boot for insulating and isolating steel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219886458U true CN219886458U (en) | 2023-10-24 |
Family
ID=88403395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320684574.XU Active CN219886458U (en) | 2023-03-31 | 2023-03-31 | Isolation boot for insulating and isolating steel rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219886458U (en) |
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2023
- 2023-03-31 CN CN202320684574.XU patent/CN219886458U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |